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Kirby ED, Andrushko JW, Boyd LA, Koschutnig K, D'Arcy RCN. Sex differences in patterns of white matter neuroplasticity after balance training in young adults. Front Hum Neurosci 2024; 18:1432830. [PMID: 39257696 PMCID: PMC11383771 DOI: 10.3389/fnhum.2024.1432830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2024] [Accepted: 08/08/2024] [Indexed: 09/12/2024] Open
Abstract
Introduction In past work we demonstrated different patterns of white matter (WM) plasticity in females versus males associated with learning a lab-based unilateral motor skill. However, this work was completed in neurologically intact older adults. The current manuscript sought to replicate and expand upon these WM findings in two ways: (1) we investigated biological sex differences in neurologically intact young adults, and (2) participants learned a dynamic full-body balance task. Methods 24 participants (14 female, 10 male) participated in the balance training intervention, and 28 were matched controls (16 female, 12 male). Correlational tractography was used to analyze changes in WM from pre- to post-training. Results Both females and males demonstrated skill acquisition, yet there were significant differences in measures of WM between females and males. These data support a growing body of evidence suggesting that females exhibit increased WM neuroplasticity changes relative to males despite comparable changes in motor behavior (e.g., balance). Discussion The biological sex differences reported here may represent an important factor to consider in both basic research (e.g., collapsing across females and males) as well as future clinical studies of neuroplasticity associated with motor function (e.g., tailored rehabilitation approaches).
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Affiliation(s)
- Eric D Kirby
- BrainNet, Health and Technology District, Surrey, BC, Canada
- Faculty of Individualized Interdisciplinary Studies, Simon Fraser University, Burnaby, BC, Canada
- Faculty of Science, Simon Fraser University, Burnaby, BC, Canada
| | - Justin W Andrushko
- Djavad Mowafaghian Center for Brain Health, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
- Department of Sport, Exercise and Rehabilitation, Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, Tyne and Wear, United Kingdom
- Brain Behavior Laboratory, Department of Physical Therapy, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Lara A Boyd
- Djavad Mowafaghian Center for Brain Health, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
- Brain Behavior Laboratory, Department of Physical Therapy, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Karl Koschutnig
- Institute of Psychology, BioTechMed Graz, University of Graz, Graz, Austria
| | - Ryan C N D'Arcy
- BrainNet, Health and Technology District, Surrey, BC, Canada
- Djavad Mowafaghian Center for Brain Health, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
- Faculty of Applied Sciences, Simon Fraser University, Burnaby, BC, Canada
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Lymer J, Bergman H, Yang S, Mallick R, Galea LAM, Choleris E, Fergusson D. The effects of estrogens on spatial learning and memory in female rodents - A systematic review and meta-analysis. Horm Behav 2024; 164:105598. [PMID: 38968677 DOI: 10.1016/j.yhbeh.2024.105598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 06/01/2024] [Accepted: 06/19/2024] [Indexed: 07/07/2024]
Abstract
Estrogens have inconsistent effects on learning and memory in both the clinical and preclinical literature. Preclinical literature has the advantage of investigating an array of potentially important factors contributing to the varied effects of estrogens on learning and memory, with stringently controlled studies. This study set out to identify specific factors in the animal literature that influence the effects of estrogens on cognition, for possible translation back to clinical practice. The literature was screened and studies meeting strict inclusion criteria were included in the analysis. Eligible studies included female ovariectomized rodents with an adequate vehicle for the estrogen treatment, with an outcome of spatial learning and memory in the Morris water maze. Training days of the Morris water maze were used to assess acquisition of spatial learning, and the probe trial was used to evaluate spatial memory recall. Continuous outcomes were pooled using a random effects inverse variance method and reported as standardized mean differences with 95 % confidence intervals. Subgroup analyses were developed a priori to assess important factors. The overall analysis favoured treatment for the later stages of training and for the probe trial. Factors including the type of estrogen, route, schedule of administration, age of animals, timing relative to ovariectomy, and duration of treatment were all found to be important. The subgroup analyses showed that chronic treatment with 17β-estradiol, either cyclically or continuously, to young animals improved spatial recall. These results, observed in animals, can inform and guide further clinical research on hormone replacement therapy for cognitive benefits.
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Affiliation(s)
- Jennifer Lymer
- Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada; Division of Neurology, Department of Medicine, The Ottawa Hospital, Ottawa, ON, Canada.
| | - Hailey Bergman
- Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada.
| | - Sabrina Yang
- Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada.
| | | | - Liisa A M Galea
- Department of Psychiatry, University of Toronto, ON, Canada; Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada.
| | - Elena Choleris
- Department of Psychology and Neuroscience Program, University of Guelph, Guelph, ON, Canada.
| | - Dean Fergusson
- Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada; Department of Medicine, University of Ottawa, Ottawa, ON, Canada.
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De la Torre K, Cerbón MA, Molina-Salinas G, Suárez-Santiago JE, Morin JP, Roldán-Roldán G, Picazo O. Synergistic neuroprotective action of prolactin and 17β-estradiol on kainic acid-induced hippocampal injury and long-term memory deficit in ovariectomized rats. Hormones (Athens) 2024; 23:321-329. [PMID: 38625627 DOI: 10.1007/s42000-024-00551-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Accepted: 03/19/2024] [Indexed: 04/17/2024]
Abstract
PURPOSE The neuroprotective actions of the ovarian hormone 17β-estradiol (E2) against different brain lesions have been constantly confirmed in a variety of models including kainic acid (KA) lesions. Similarly, the pituitary hormone prolactin (PRL), traditionally associated with lactogenesis, has recently been linked to a large diversity of functions, including neurogenesis, neuroprotection, and cognitive processes. While the mechanisms of actions of E2 as regards its neuroprotective and behavioral effects have been extensively explored, the molecular mechanisms of PRL related to these roles remain under investigation. The current study aimed to investigate whether the simultaneous administration of PRL and a low dose of E2 prevents the KA-induced cognitive deficit and if this action is associated with changes in hippocampal neuronal density. METHODS Ovariectomized (OVX) rats were treated with saline, PRL, and/or E2 in the presence or absence of KA. Neuroprotection was assessed by Nissl staining and neuron counting. Memory was evaluated with the novel object recognition test (NOR). RESULTS On their own, both PRL and E2 prevented short- and long-term memory deficits in lesioned animals and exerted neuroprotection against KA-induced excitotoxicity in the hippocampus. Interestingly, the combined hormonal treatment was superior to either of the treatments administered alone as regards improving both memory and neuronal survival. CONCLUSION Taken together, these results point to a synergic effect of E2 and PRL in the hippocampus to produce their behavioral, proliferative, and neuroprotective effects.
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Affiliation(s)
- Karen De la Torre
- Escuela Superior de Medicina, Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón s/n, Col. Sto. Tomás, 11340. Ciudad de México, Ciudad de México, México
| | - Marco Antonio Cerbón
- Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Gladys Molina-Salinas
- Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - José Eduardo Suárez-Santiago
- Escuela Superior de Medicina, Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón s/n, Col. Sto. Tomás, 11340. Ciudad de México, Ciudad de México, México
- Facultad de Medicina Humana, Universidad Autónoma de Chiapas, Tuxtla Gutiérrez, Chiapas, Mexico
| | - Jean-Pascal Morin
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Gabriel Roldán-Roldán
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México, México.
| | - Ofir Picazo
- Escuela Superior de Medicina, Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón s/n, Col. Sto. Tomás, 11340. Ciudad de México, Ciudad de México, México.
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Damme KSF, Hernandez JJ, Mittal VA. The impact of menarche on hippocampal mechanisms of severity of psychotic-like experiences in the ABCD study. Psychoneuroendocrinology 2024; 163:106961. [PMID: 38335828 PMCID: PMC10947826 DOI: 10.1016/j.psyneuen.2024.106961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 01/09/2024] [Accepted: 01/10/2024] [Indexed: 02/12/2024]
Abstract
Accumulating evidence suggests that estrogens play an important modulatory role in the pathogenesis of psychosis. Estrogens come online within a dynamic developmental context of emerging psychopathology and neurodevelopment. As a result, estradiol (the primary form of estrogen) may influence psychosis lability directly or indirectly through its neurodevelopmental influence on estrogens-sensitive areas like the hippocampus. Understanding this influence may provide novel insight into mechanisms of psychosis lability. This study included baseline and year 2 timepoints from 4422 female participants from the Adolescent Brain Cognitive Development (ABCD) study (age 8-13), who varied in estradiol availability (pre-menarche, post-menarche, pre- and post-menarche timepoints). Estradiol availability was related to psychotic-like experiences (PLE) severity both directly and as an interactive effect with hippocampal connectivity using menarche status (pre/post) in a multilevel model. PLE severity was highest in individuals with early menarche emphasizing the importance of the developmental timing. Although PLE severity decreased over time in the sample, it stayed clinically-relevant over 2 years. Lower hippocampal connectivity was related to elevated PLE severity. This effect was moderated by estradiol; before the availability of estradiol (pre-menarche), lower hippocampal connectivity significantly contributed to the PLE severity, but when estradiol was available (post-menarche) hippocampal dysconnectivity did not account for PLE severity. This moderation suggests that the estrodiol's influence on hippocampal plasticity also reduced the mechanistic role of the hippocampus on PLE severity. Further, the lack of a significant direct reduction of PLE severity post-menarche, may suggest an increased role for other interacting psychosis lability factors during this critical developmental period.
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Affiliation(s)
- Katherine S F Damme
- Department of Psychology, Northwestern University, Evanston, IL, USA; Institute for Innovations in Developmental Sciences (DevSci), Northwestern University, Chicago, IL, USA; Department of Psychiatry, Northwestern University, Chicago, IL, USA.
| | - Joanna J Hernandez
- Department of Psychology, Northwestern University, Evanston, IL, USA; Department of Psychiatry, Northwestern University, Chicago, IL, USA.
| | - Vijay A Mittal
- Department of Psychology, Northwestern University, Evanston, IL, USA; Institute for Innovations in Developmental Sciences (DevSci), Northwestern University, Chicago, IL, USA; Department of Psychiatry, Northwestern University, Chicago, IL, USA; Medical Social Sciences, Northwestern University, Chicago, IL, USA; Institute for Policy Research (IPR), Northwestern University, Chicago, IL, USA
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Kirby ED, Andrushko JW, Rinat S, D'Arcy RCN, Boyd LA. Investigating female versus male differences in white matter neuroplasticity associated with complex visuo-motor learning. Sci Rep 2024; 14:5951. [PMID: 38467763 PMCID: PMC10928090 DOI: 10.1038/s41598-024-56453-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 03/06/2024] [Indexed: 03/13/2024] Open
Abstract
Magnetic resonance imaging (MRI) has increasingly been used to characterize structure-function relationships during white matter neuroplasticity. Biological sex differences may be an important factor that affects patterns of neuroplasticity, and therefore impacts learning and rehabilitation. The current study examined a participant cohort before and after visuo-motor training to characterize sex differences in microstructural measures. The participants (N = 27) completed a 10-session (4 week) complex visuo-motor training task with their non-dominant hand. All participants significantly improved movement speed and their movement speed variability over the training period. White matter neuroplasticity in females and males was examined using fractional anisotropy (FA) and myelin water fraction (MWF) along the cortico-spinal tract (CST) and the corpus callosum (CC). FA values showed significant differences in the middle portion of the CST tract (nodes 38-51) across the training period. MWF showed a similar cluster in the inferior portion of the tract (nodes 18-29) but did not reach significance. Additionally, at baseline, males showed significantly higher levels of MWF measures in the middle body of the CC. Combining data from females and males would have resulted in reduced sensitivity, making it harder to detect differences in neuroplasticity. These findings offer initial insights into possible female versus male differences in white matter neuroplasticity during motor learning. This warrants investigations into specific patterns of white matter neuroplasticity for females versus males across the lifespan. Understanding biological sex-specific differences in white matter neuroplasticity may have significant implications for the interpretation of change associated with learning or rehabilitation.
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Affiliation(s)
- Eric D Kirby
- BrainNet, Health and Technology District, Vancouver, BC, Canada
- Faculty of Individualized Interdisciplinary Studies, Simon Fraser University, Burnaby, BC, Canada
- Faculty of Science, Simon Fraser University, Burnaby, BC, Canada
| | - Justin W Andrushko
- DM Centre for Brain Health, Faculty of Medicine, University of British Columbia, Vancouver, Canada
- Department of Sport, Exercise and Rehabilitation, Faculty of Health and Life Sciences, Northumbria University, Newcastle Upon Tyne, UK
- Brain Behaviour Laboratory, Department of Physical Therapy, Faculty of Medicine, University of British Columbia, Vancouver, Canada
| | - Shie Rinat
- Brain Behaviour Laboratory, Department of Physical Therapy, Faculty of Medicine, University of British Columbia, Vancouver, Canada
| | - Ryan C N D'Arcy
- BrainNet, Health and Technology District, Vancouver, BC, Canada.
- DM Centre for Brain Health, Faculty of Medicine, University of British Columbia, Vancouver, Canada.
- Faculty of Applied Sciences, Simon Fraser University, Burnaby, BC, Canada.
| | - Lara A Boyd
- DM Centre for Brain Health, Faculty of Medicine, University of British Columbia, Vancouver, Canada.
- Brain Behaviour Laboratory, Department of Physical Therapy, Faculty of Medicine, University of British Columbia, Vancouver, Canada.
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Kalakh S, Mouihate A. The Effects of Neuroactive Steroids on Myelin in Health and Disease. Med Princ Pract 2024; 33:198-214. [PMID: 38350432 PMCID: PMC11175611 DOI: 10.1159/000537794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 02/12/2024] [Indexed: 02/15/2024] Open
Abstract
Myelin plays a pivotal role in the efficient transmission of nerve impulses. Disruptions in myelin integrity are associated with numerous neurological disorders, including multiple sclerosis. In the central nervous system (CNS), myelin is formed by oligodendrocytes. Remyelination refers to the re-formation of the damaged myelin sheath by newly formed oligodendrocytes. Steroids have gained attention for their potential modulatory effects on myelin in both health and disease. Steroids are traditionally associated with endocrine functions, but their local synthesis within the nervous system has generated significant interest. The term "neuroactive steroids" refers to steroids that can act on cells of the nervous system. In the healthy state, neuroactive steroids promote myelin formation, maintenance, and repair by enhancing oligodendrocyte differentiation and maturation. In pathological conditions, such as demyelination injury, multiple neuroactive steroids have shown promise in promoting remyelination. Understanding the effects of neuroactive steroids on myelin could lead to novel therapeutic approaches for demyelinating diseases and neurodegenerative disorders. This review highlights the potential therapeutic significance of neuroactive steroids in myelin-related health and diseases. We review the synthesis of steroids by neurons and glial cells and discuss the roles of neuroactive steroids on myelin structure and function in health and disease. We emphasize the potential promyelinating effects of the varying levels of neuroactive steroids during different female physiological states such as the menstrual cycle, pregnancy, lactation, and postmenopause.
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Affiliation(s)
- Samah Kalakh
- Department of Physiology, College of Medicine, Kuwait University, Kuwait City, Kuwait
- School of Engineering and Computing, American International University, Kuwait City, Kuwait
| | - Abdeslam Mouihate
- Department of Physiology, College of Medicine, Kuwait University, Kuwait City, Kuwait
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Cruz LL, Barco VS, Paula VG, Souza MR, Gallego FQ, Monteiro GC, Lima GPP, Damasceno DC, Volpato GT. Toxicological effects of the Curatella americana extract in embryo development of female pups from diabetic rats. Reprod Biol 2023; 23:100819. [PMID: 37918046 DOI: 10.1016/j.repbio.2023.100819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 10/16/2023] [Accepted: 10/18/2023] [Indexed: 11/04/2023]
Abstract
Maternal diabetes can influence the development of offspring during fetal life and postnatally. Curatella americana is a plant used as a menstrual cycle regulator and to prevent diabetes. This study evaluates the effects of C. americana aqueous extract on the estrous cycle and preimplantation embryos of adult female pups from diabetic rats. Female Sprague Dawley newborn rats received Streptozotocin or vehicle (citrate buffer). At adulthood, were submitted to the Oral Glucose Tolerance Test, and mated. The female rats were obtained and were distributed into four experimental groups: OC and OC/T represent female pups of control mothers and received water or plant extract, respectively; OD and OD/T represent female pups of diabetic mothers and received water or plant extract, respectively. The estrous cycle was followed for 10 days, the rats were mated and on gestational day 4 was performed preimplantation embryo analysis. Phenolic composition and biogenic amines in the extract were analyzed about the influence of the thermal process. The female pups from diabetic dams exhibited glucose intolerance, irregular estral cycle and a higher percentage of pre-embryos in delayed development (morula stage). After C. americana treatment, OD/T group no present a regular estrous cycle. Furthermore, the infusion process increases phenolic compounds and biogenic amines levels, which can have anti-estrogenic effect, anticipates the early embryonic development, and impair pre-implantation embryos. Thus, the indiscriminate use of medicinal plants should be avoided in any life phases by women, especially during pregnancy.
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Affiliation(s)
- Larissa Lopes Cruz
- Laboratory of System Physiology and Reproductive Toxicology, Institute of Biological and Health Sciences, Federal University of Mato Grosso (UFMT), Barra do Garças, Brazil; Laboratory of Experimental Research on Gynecology and Obstetrics, Postgraduate Course on Tocogynecology, Botucatu Medical School, Universidade Estadual Paulista (UNESP), Botucatu, Brazil
| | - Vinícius Soares Barco
- Laboratory of Experimental Research on Gynecology and Obstetrics, Postgraduate Course on Tocogynecology, Botucatu Medical School, Universidade Estadual Paulista (UNESP), Botucatu, Brazil
| | - Verônyca Gonçalves Paula
- Laboratory of Experimental Research on Gynecology and Obstetrics, Postgraduate Course on Tocogynecology, Botucatu Medical School, Universidade Estadual Paulista (UNESP), Botucatu, Brazil
| | - Maysa Rocha Souza
- Laboratory of System Physiology and Reproductive Toxicology, Institute of Biological and Health Sciences, Federal University of Mato Grosso (UFMT), Barra do Garças, Brazil; Laboratory of Experimental Research on Gynecology and Obstetrics, Postgraduate Course on Tocogynecology, Botucatu Medical School, Universidade Estadual Paulista (UNESP), Botucatu, Brazil
| | - Franciane Quintanilha Gallego
- Laboratory of Experimental Research on Gynecology and Obstetrics, Postgraduate Course on Tocogynecology, Botucatu Medical School, Universidade Estadual Paulista (UNESP), Botucatu, Brazil
| | - Gean Charles Monteiro
- Department of Chemical and Biological Sciences, Institute of Bioscience, São Paulo State University, Botucatu, Brazil
| | - Giuseppina Pace Pereira Lima
- Department of Chemical and Biological Sciences, Institute of Bioscience, São Paulo State University, Botucatu, Brazil
| | - Débora Cristina Damasceno
- Laboratory of Experimental Research on Gynecology and Obstetrics, Postgraduate Course on Tocogynecology, Botucatu Medical School, Universidade Estadual Paulista (UNESP), Botucatu, Brazil
| | - Gustavo Tadeu Volpato
- Laboratory of System Physiology and Reproductive Toxicology, Institute of Biological and Health Sciences, Federal University of Mato Grosso (UFMT), Barra do Garças, Brazil.
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Lipatova O, Campolattaro MM, Lockhart BK, Hammad MB. Differential effects of acute stress on spatial learning and memory in the open-field tower maze across the female estrous cycle. Neurobiol Learn Mem 2023; 206:107862. [PMID: 37944635 DOI: 10.1016/j.nlm.2023.107862] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 10/25/2023] [Accepted: 11/06/2023] [Indexed: 11/12/2023]
Abstract
The purpose of the present investigation was to test how acute stress and levels of circulating estrogens together influence acquisition and retention of spatial learning, as well as explorative behaviors in female rats. We used the hippocampus-dependent Open-field Tower Maze (OFTM) task to assess acquisition followed by a retention test (reacquisition) that was given 48 h later. Immediately prior to acquisition, experimental rats were exposed to an acute restraint stress and were trained under bright lights. Female rats' estrous cycles were tracked throughout training and testing. Exposure to stress did not affect learning when levels of estrogens were low (i.e., during estrus and metestrus). However, acute stress exposure significantly lowered spatial acquisition of the female rats in the phases with rising levels of estrogens (i.e., during diestrus and proestrus). Furthermore, this stress-induced diminishment during acquisition was evident at the beginning of the retention without any presentation of stress. The present findings provide insight about the interactive relationship between stress and sex hormones on cognitive functions.
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Affiliation(s)
- Olga Lipatova
- Christopher Newport University, Newport News, VA, United States.
| | | | - Blakely K Lockhart
- Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - Mariam B Hammad
- Virginia Commonwealth University, Richmond, VA, United States
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Calvo N, Einstein G. Steroid hormones: risk and resilience in women's Alzheimer disease. Front Aging Neurosci 2023; 15:1159435. [PMID: 37396653 PMCID: PMC10313425 DOI: 10.3389/fnagi.2023.1159435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Accepted: 05/23/2023] [Indexed: 07/04/2023] Open
Abstract
More women have Alzheimer disease (AD) than men, but the reasons for this phenomenon are still unknown. Including women in clinical research and studying their biology is key to understand not just their increased risk but also their resilience against the disease. In this sense, women are more affected by AD than men, but their reserve or resilience mechanisms might delay symptom onset. The aim of this review was to explore what is known about mechanisms underlying women's risk and resilience in AD and identify emerging themes in this area that merit further research. We conducted a review of studies analyzing molecular mechanisms that may induce neuroplasticity in women, as well as cognitive and brain reserve. We also analyzed how the loss of steroid hormones in aging may be linked to AD. We included empirical studies with human and animal models, literature reviews as well as meta-analyses. Our search identified the importance of 17-b-estradiol (E2) as a mechanism driving cognitive and brain reserve in women. More broadly, our analysis revealed the following emerging perspectives: (1) the importance of steroid hormones and their effects on both neurons and glia for the study of risk and resilience in AD, (2) E2's crucial role in women's brain reserve, (3) women's verbal memory advantage as a cognitive reserve factor, and (4) E2's potential role in linguistic experiences such as multilingualism and hearing loss. Future directions for research include analyzing the reserve mechanisms of steroid hormones on neuronal and glial plasticity, as well as identifying the links between steroid hormone loss in aging and risk for AD.
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Affiliation(s)
- Noelia Calvo
- Department of Psychology, University of Toronto, Toronto, ON, Canada
| | - Gillian Einstein
- Department of Psychology, University of Toronto, Toronto, ON, Canada
- Rotman Research Institute, Baycrest Health Sciences, Toronto, ON, Canada
- Tema Genus, Linköping University, Linköping, Sweden
- Women’s College Research Institute, Toronto, ON, Canada
- Centre for Life Course and Aging, University of Toronto, Toronto, ON, Canada
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10
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Barha CK, Best JR, Rosano C, Yaffe K, Catov JM, Liu-Ambrose T. Walking for Cognitive Health: Previous Parity Moderates the Relationship Between Self-Reported Walking and Cognition. J Gerontol A Biol Sci Med Sci 2023; 78:486-493. [PMID: 35670837 PMCID: PMC9977231 DOI: 10.1093/gerona/glac123] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Older females show greater cognitive gains from physical activity (PA) than males, which may be related to long-term consequences of female-specific reproductive events (eg, pregnancy) on cognitive health. METHODS To determine whether previous parity could moderate the relationship between PA and cognitive decline in older women, we conducted secondary analyses of data from the Health, Aging, and Body Composition Study. We tested whether the association between average PA over 10 years and cognition (Modified Mini-Mental State Examination [3MS]) and executive functioning (digit symbol substitution test [DSST]) over 10 years varied by previous parity (nulliparity, low parity, medium parity, and grand multiparity). An analysis of covariance was performed with cognition (average and change over 10 years) as the dependent variables, parity as a categorical predictor, average PA as a continuous predictor, and a set of relevant covariates. RESULTS Significant interactions were found between PA and parity group for all 4 comparisons: average 3MS (p = .014), average DSST (p = .032), change in 3MS (p = .016), and change in DSST (p = .017). Simple slope analyses indicated the positive relationship between PA and average 3MS and DSST was only significant in the nulliparity and grand multiparity groups, and the positive relationship between PA and change in 3MS and DSST was only significant in the grand multiparity group. CONCLUSION The findings suggest the relationship between self-reported walking and cognitive performance was strongest in the groups at risk for cognitive decline and dementia, the nulliparous and grand multiparous groups.
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Affiliation(s)
- Cindy K Barha
- Djavad Mowafaghian Centre for Brain Health, Vancouver Coastal Health Research Institute, Vancouver, Canada
- Department of Physical Therapy, University of British Columbia, Vancouver, Canada
| | - John R Best
- Djavad Mowafaghian Centre for Brain Health, Vancouver Coastal Health Research Institute, Vancouver, Canada
- Department of Physical Therapy, University of British Columbia, Vancouver, Canada
| | - Caterina Rosano
- Department of Epidemiology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Kristine Yaffe
- Department of Epidemiology and Biostatistics, University of California, California, San Francisco, USA
- Departments of Psychiatry and Neurology, University of California, San Francisco, California,USA
| | - Janet M Catov
- Department of Epidemiology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Teresa Liu-Ambrose
- Djavad Mowafaghian Centre for Brain Health, Vancouver Coastal Health Research Institute, Vancouver, Canada
- Department of Physical Therapy, University of British Columbia, Vancouver, Canada
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Giudicessi AJ, Saelzler UG, Shadyab AH, Posis AIB, Sundermann E, Banks SJ, Panizzon MS. The mediating role of socioeconomic status on the relationship between pregnancy history and later-life cognition. Climacteric 2022; 25:627-633. [PMID: 36218124 PMCID: PMC9926890 DOI: 10.1080/13697137.2022.2129004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 09/16/2022] [Accepted: 09/19/2022] [Indexed: 01/26/2023]
Abstract
OBJECTIVE The association of pregnancy with later-life cognition is not well understood. We examined whether full-term and incomplete pregnancies were associated with cognition in a sample of postmenopausal women, and whether socioeconomic status (SES) factors mediated these relationships. METHODS A total of 1016 cognitively normal women from the National Health and Nutrition Examination Survey (NHANES) were examined. Cognitive measures included the Digit Symbol Substitution Test (DSST), Animal Fluency (AF) and the Consortium to Establish a Registry for Alzheimer's Disease (CERAD) Word Learning (CERAD-WL) and Delayed Recall (CERAD-DR) tasks. Analyses examined the relationship between the number of term and incomplete pregnancies with cognitive performance, as well as the mediating effects of education and the federal income-to-poverty ratio (PIR). RESULTS A greater number of term pregnancies was associated with worse performance on the DSST (β = -0.09, 95% confidence interval [CI]: -0.12, -0.06), AF (β = -0.03, 95% CI: -0.07, 0.00) and CERAD-DR (β = -0.04, 95% CI: -0.08, -0.01). More incomplete pregnancies were associated with better CERAD-DR performance (β = 0.07, 95% CI: 0.01, 0.13), and 28% (95% CI: 0.17, 0.42) of the association of term pregnancies with the DSST was mediated by the PIR. CONCLUSIONS A higher number of term pregnancies was associated with worse cognitive performance, whereas a higher number of incomplete pregnancies was associated with better cognitive performance. Results indicate the necessity to consider SES factors when studying the relationship between pregnancy and cognition.
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Affiliation(s)
- Averi J. Giudicessi
- Department of Psychiatry, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093
| | - Ursula G. Saelzler
- Department of Psychiatry, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093
| | - Aladdin H. Shadyab
- Herbert Wertheim School of Public Health and Human Longevity Science, University of California, San Diego, La Jolla, CA, USA
| | - Alexander Ivan B. Posis
- Herbert Wertheim School of Public Health and Human Longevity Science, University of California, San Diego, La Jolla, CA, USA
- School of Public Health, School of Public Health, San Diego State University, San Diego, CA, USA
| | - Erin Sundermann
- Department of Psychiatry, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093
| | - Sarah J. Banks
- Department of Psychiatry, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093
- Department of Neuroscience, University of California, 9500 Gilman Drive, La Jolla, CA 92093
| | - Matthew S. Panizzon
- Department of Psychiatry, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093
- Center for Behavior Genetics of Aging, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093
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12
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Isoflavone-Enriched Soybean Leaves (Glycine Max) Alleviate Cognitive Impairment Induced by Ovariectomy and Modulate PI3K/Akt Signaling in the Hippocampus of C57BL6 Mice. Nutrients 2022; 14:nu14224753. [PMID: 36432439 PMCID: PMC9697522 DOI: 10.3390/nu14224753] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 10/24/2022] [Accepted: 11/08/2022] [Indexed: 11/12/2022] Open
Abstract
(1) Background: The estrogen decline during perimenopause can induce various disorders, including cognitive impairment. Phytoestrogens, such as isoflavones, lignans, and coumestans, have been tried as a popular alternative to avoid the side effects of conventional hormone replacement therapy, but their exact mechanisms and risk are not fully elucidated. In this study, we investigated the effects of isoflavone-enriched soybean leaves (IESLs) on the cognitive impairment induced by ovariectomy in female mice. (2) Methods: Ovariectomy was performed at 9 weeks of age to mimic menopausal women, and the behavior tests for cognition were conducted 15 weeks after the first administration. IESLs were administered for 18 weeks. (3) Results: The present study showed the effects of IESLs on the cognitive function in the OVX (ovariectomized) mice. Ovariectomy markedly increased the body weight and fat accumulation in the liver and perirenal fat, but IESL treatment significantly inhibited them. In the behavioral tests, ovariectomy impaired cognitive functions, but administration of IESLs restored it. In addition, in the OVX mice, administration of IESLs restored decreased estrogen receptor (ER) β and PI3K/Akt expression in the hippocampus. (4) Conclusions: The positive effects of IESLs on cognitive functions may be closely related to the ER-mediated PI3/Akt signaling pathway in the hippocampus.
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13
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Saito ER, Warren CE, Hanegan CM, Larsen JG, du Randt JD, Cannon M, Saito JY, Campbell RJ, Kemberling CM, Miller GS, Edwards JG, Bikman BT. A Novel Ketone-Supplemented Diet Improves Recognition Memory and Hippocampal Mitochondrial Efficiency in Healthy Adult Mice. Metabolites 2022; 12:1019. [PMID: 36355101 PMCID: PMC9693360 DOI: 10.3390/metabo12111019] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 10/20/2022] [Accepted: 10/21/2022] [Indexed: 09/13/2023] Open
Abstract
Mitochondrial dysfunction and cognitive impairment are common symptoms in many neurologic and psychiatric disorders, as well as nonpathological aging. Ketones have been suggested as therapeutic for their efficacy in epilepsy and other brain pathologies such as Alzheimer's disease and major depressive disorder. However, their effects on cognitive function in healthy individuals is less established. Here, we explored the mitochondrial and performative outcomes of a novel eight-week ketone-supplemented ketogenic (KETO) diet in healthy adult male and female mice. In a novel object recognition test, KETO mice spent more time with the novel, compared to familiar, object, indicating an improvement in recognition memory. High-resolution respirometry on permeabilized hippocampal tissue returned significant reductions in mitochondrial O2 consumption. No changes in ATP production were observed, yielding a significantly higher ATP:O2 ratio, a measure of mitochondrial efficiency. Together, these findings demonstrate the KETO diet improves hippocampal mitochondrial efficiency. They add to a growing body of evidence that suggests ketones and ketogenic diets are neuroprotective and metabolically and cognitively relevant, even in healthy adults. They also suggest that ketogenic lifestyle changes may be effective strategies for protecting against cognitive decline associated with aging and disease.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Benjamin T. Bikman
- Department of Cell Biology and Physiology, Brigham Young University, Provo, UT 84602, USA
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14
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Koebele SV, Poisson ML, Palmer JM, Berns-Leone C, Northup-Smith SN, Peña VL, Strouse IM, Bulen HL, Patel S, Croft C, Bimonte-Nelson HA. Evaluating the Cognitive Impacts of Drospirenone, a Spironolactone-Derived Progestin, Independently and in Combination With Ethinyl Estradiol in Ovariectomized Adult Rats. Front Neurosci 2022; 16:885321. [PMID: 35692432 PMCID: PMC9177129 DOI: 10.3389/fnins.2022.885321] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Accepted: 04/14/2022] [Indexed: 11/15/2022] Open
Abstract
Oral contraceptives and hormone therapies require a progestogen component to prevent ovulation, curtail uterine hyperplasia, and reduce gynecological cancer risk. Diverse classes of synthetic progestogens, called progestins, are used as natural progesterone alternatives due to progesterone’s low oral bioavailability. Progesterone and several synthetic analogs can negatively impact cognition and reverse some neuroprotective estrogen effects. Here, we investigate drospirenone, a spironolactone-derived progestin, which has unique pharmacological properties compared to other clinically-available progestins and natural progesterone, for its impact on spatial memory, anxiety-like behavior, and brain regions crucial to these cognitive tasks. Experiment 1 assessed three drospirenone doses in young adult, ovariectomized rats, and found that a moderate drospirenone dose benefited spatial memory. Experiment 2 investigated this moderate drospirenone dose with and without concomitant ethinyl estradiol (EE) treatment, the most common synthetic estrogen in oral contraceptives. Results demonstrate that the addition of EE to drospirenone administration reversed the beneficial working memory effects of drospirenone. The hippocampus, entorhinal cortex, and perirhinal cortex were then probed for proteins known to elicit estrogen- and progestin- mediated effects on learning and memory, including glutamate decarboxylase (GAD)65, GAD67, and insulin-like growth factor receptor protein expression, using western blot. EE increased GAD expression in the perirhinal cortex. Taken together, results underscore the necessity to consider the distinct cognitive and neural impacts of clinically-available synthetic estrogen and progesterone analogs, and why they produce unique cognitive profiles when administered together compared to those observed when each hormone is administered separately.
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Affiliation(s)
- Stephanie V. Koebele
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Mallori L. Poisson
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Justin M. Palmer
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Claire Berns-Leone
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Steven N. Northup-Smith
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Veronica L. Peña
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Isabel M. Strouse
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Haidyn L. Bulen
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Shruti Patel
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Corissa Croft
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Heather A. Bimonte-Nelson
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
- *Correspondence: Heather A. Bimonte-Nelson,
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15
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Decandia D, Landolfo E, Sacchetti S, Gelfo F, Petrosini L, Cutuli D. n-3 PUFA Improve Emotion and Cognition during Menopause: A Systematic Review. Nutrients 2022; 14:1982. [PMID: 35565948 PMCID: PMC9100978 DOI: 10.3390/nu14091982] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 04/29/2022] [Accepted: 05/04/2022] [Indexed: 02/04/2023] Open
Abstract
Women show an increased risk of cognitive impairment and emotional disorders, such as anxiety and depression, when approaching menopause. Data on risk and protection factors have yielded robust evidence on the effects of lifestyle factors, such as diet, in preserving emotional and cognitive functioning. This review focused on the effects of omega-3 polyunsaturated fatty acids (n-3 PUFA) on anxiety, depression, and cognition during the menopausal transition. This systematic review considered all articles published until 31 December 2021, and the search was performed on two databases, PubMed and Scopus. The fields of interest were "menopause", "n-3 PUFA" and "emotional and cognitive aspects". Out of the 361 articles found on PubMed and 283 on Scopus, 17 met inclusion criteria. They encompassed 11 human and 6 animal studies. Most studies reported relieved depressive symptoms in relation to n-3 PUFA intake. While controversial results were found on anxiety and cognition in humans, n-3 PUFA consistently reduced anxiety symptoms and improved cognition in animal studies. Taken together, n-3 PUFA intake shows beneficial effects on emotional and cognitive behaviours during menopause transition. However, further investigations could increase knowledge about the effectiveness of n-3 PUFA on psychological well-being in this delicate period of feminine life.
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Affiliation(s)
- Davide Decandia
- IRCCS Fondazione Santa Lucia, Via Ardeatina 306, 00179 Rome, Italy; (E.L.); (S.S.); (F.G.); (L.P.); (D.C.)
- Department of Psychology, Sapienza University of Rome, Via dei Marsi 78, 00185 Rome, Italy
| | - Eugenia Landolfo
- IRCCS Fondazione Santa Lucia, Via Ardeatina 306, 00179 Rome, Italy; (E.L.); (S.S.); (F.G.); (L.P.); (D.C.)
| | - Stefano Sacchetti
- IRCCS Fondazione Santa Lucia, Via Ardeatina 306, 00179 Rome, Italy; (E.L.); (S.S.); (F.G.); (L.P.); (D.C.)
- Department of Psychology, Sapienza University of Rome, Via dei Marsi 78, 00185 Rome, Italy
| | - Francesca Gelfo
- IRCCS Fondazione Santa Lucia, Via Ardeatina 306, 00179 Rome, Italy; (E.L.); (S.S.); (F.G.); (L.P.); (D.C.)
- Department of Human Sciences, Guglielmo Marconi University, Via Plinio 44, 00193 Rome, Italy
| | - Laura Petrosini
- IRCCS Fondazione Santa Lucia, Via Ardeatina 306, 00179 Rome, Italy; (E.L.); (S.S.); (F.G.); (L.P.); (D.C.)
| | - Debora Cutuli
- IRCCS Fondazione Santa Lucia, Via Ardeatina 306, 00179 Rome, Italy; (E.L.); (S.S.); (F.G.); (L.P.); (D.C.)
- Department of Psychology, Sapienza University of Rome, Via dei Marsi 78, 00185 Rome, Italy
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16
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Abstract
Sex and gender differences are seen in cognitive disturbances in a variety of neurological and psychiatry diseases. Men are more likely to have cognitive symptoms in schizophrenia whereas women are more likely to have more severe cognitive symptoms with major depressive disorder and Alzheimer's disease. Thus, it is important to understand sex and gender differences in underlying cognitive abilities with and without disease. Sex differences are noted in performance across various cognitive domains - with males typically outperforming females in spatial tasks and females typically outperforming males in verbal tasks. Furthermore, there are striking sex differences in brain networks that are activated during cognitive tasks and in learning strategies. Although rarely studied, there are also sex differences in the trajectory of cognitive aging. It is important to pay attention to these sex differences as they inform researchers of potential differences in resilience to age-related cognitive decline and underlying mechanisms for both healthy and pathological cognitive aging, depending on sex. We review literature on the progressive neurodegenerative disorder, Alzheimer's disease, as an example of pathological cognitive aging in which human females show greater lifetime risk, neuropathology, and cognitive impairment, compared to human males. Not surprisingly, the relationships between sex and cognition, cognitive aging, and Alzheimer's disease are nuanced and multifaceted. As such, this chapter will end with a discussion of lifestyle factors, like education and diet, as modifiable factors that can alter cognitive aging by sex. Understanding how cognition changes across age and contributing factors, like sex differences, will be essential to improving care for older adults.
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17
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Moog NK, Heim CM, Entringer S, Simhan HN, Wadhwa PD, Buss C. Transmission of the adverse consequences of childhood maltreatment across generations: Focus on gestational biology. Pharmacol Biochem Behav 2022; 215:173372. [DOI: 10.1016/j.pbb.2022.173372] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 02/04/2022] [Accepted: 02/28/2022] [Indexed: 12/25/2022]
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18
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Jennen L, Mazereel V, Lecei A, Samaey C, Vancampfort D, van Winkel R. Exercise to spot the differences: a framework for the effect of exercise on hippocampal pattern separation in humans. Rev Neurosci 2022; 33:555-582. [PMID: 35172422 DOI: 10.1515/revneuro-2021-0156] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 01/16/2022] [Indexed: 12/12/2022]
Abstract
Exercise has a beneficial effect on mental health and cognitive functioning, but the exact underlying mechanisms remain largely unknown. In this review, we focus on the effect of exercise on hippocampal pattern separation, which is a key component of episodic memory. Research has associated exercise with improvements in pattern separation. We propose an integrated framework mechanistically explaining this relationship. The framework is divided into three pathways, describing the pro-neuroplastic, anti-inflammatory and hormonal effects of exercise. The pathways are heavily intertwined and may result in functional and structural changes in the hippocampus. These changes can ultimately affect pattern separation through direct and indirect connections. The proposed framework might guide future research on the effect of exercise on pattern separation in the hippocampus.
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Affiliation(s)
- Lise Jennen
- KU Leuven, Department of Neurosciences, Center for Clinical Psychiatry, ON V Herestraat 49, bus 1029, 3000 Leuven, Belgium
| | - Victor Mazereel
- KU Leuven, Department of Neurosciences, Center for Clinical Psychiatry, ON V Herestraat 49, bus 1029, 3000 Leuven, Belgium.,University Psychiatric Center KU Leuven, Leuvensesteenweg 517, 3070 Leuven-Kortenberg, Belgium
| | - Aleksandra Lecei
- KU Leuven, Department of Neurosciences, Center for Clinical Psychiatry, ON V Herestraat 49, bus 1029, 3000 Leuven, Belgium
| | - Celine Samaey
- KU Leuven, Department of Neurosciences, Center for Clinical Psychiatry, ON V Herestraat 49, bus 1029, 3000 Leuven, Belgium
| | - Davy Vancampfort
- University Psychiatric Center KU Leuven, Leuvensesteenweg 517, 3070 Leuven-Kortenberg, Belgium.,KU Leuven Department of Rehabilitation Sciences, ON IV Herestraat 49, bus 1510, 3000, Leuven, Belgium
| | - Ruud van Winkel
- KU Leuven, Department of Neurosciences, Center for Clinical Psychiatry, ON V Herestraat 49, bus 1029, 3000 Leuven, Belgium.,University Psychiatric Center KU Leuven, Leuvensesteenweg 517, 3070 Leuven-Kortenberg, Belgium
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19
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Rehbein E, Kogler L, Kotikalapudi R, Sattler A, Krylova M, Kagan KO, Sundström-Poromaa I, Derntl B. Pregnancy and brain architecture: Associations with hormones, cognition and affect. J Neuroendocrinol 2022; 34:e13066. [PMID: 35014110 DOI: 10.1111/jne.13066] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 09/23/2021] [Accepted: 11/18/2021] [Indexed: 11/29/2022]
Abstract
Sex hormones such as estradiol (E2) have long-lasting influence on brain architecture. Recent studies indicate further structural changes during hormonal transition periods including pregnancy, when women experience the greatest increase in sex hormone levels across their life span. In the present study, three groups of women (n = 44) with different levels of E2 underwent structural magnetic resonance imaging: (1) first-time pregnant women (n = 13, 'extreme E2 group'); (2), nulliparous, naturally cycling women who received 12 mg of E2 valerate (n = 16, 'high E2 group'); and (3) nulliparous, naturally cycling women receiving a placebo and hence low E2 (n = 15, 'low E2 group'). Blood samples were taken to assess hormonal levels. Moreover, parameters for cognition, emotion regulation and affect were assessed. On the neuronal level, the extreme E2 compared to the high E2 group showed a reduced gray matter volume in the left putamen. However, no significant differences were found between the low vs. high E2 groups, nor between the low E2 and extreme E2 groups. Cognitive performance was reduced in the extreme E2 group, although a positive affect was increased compared to the high E2 and low E2 groups. Furthermore, regression analyses revealed several associations between cognition, subjective measures of affect, emotion regulation and gray matter volume. A volume reduction of the left putamen during pregnancy further supports the notion that the female brain is shaped by hormonal transition phases, possibly preparing women for their future roles (e.g., pregnant women for their role as mothers).
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Affiliation(s)
- Elisa Rehbein
- Department of Psychiatry and Psychotherapy, Innovative Neuroimaging, Tübingen Center for Mental Health (TüCMH), University of Tübingen, Tübingen, Germany
- Werner Reichardt Centre for Integrative Neuroscience, University of Tübingen, Tübingen, Germany
| | - Lydia Kogler
- Department of Psychiatry and Psychotherapy, Innovative Neuroimaging, Tübingen Center for Mental Health (TüCMH), University of Tübingen, Tübingen, Germany
| | | | - Anna Sattler
- Department of Psychiatry and Psychotherapy, Innovative Neuroimaging, Tübingen Center for Mental Health (TüCMH), University of Tübingen, Tübingen, Germany
| | - Marina Krylova
- Department of Psychiatry and Psychotherapy, University of Jena, Jena, Germany
- Medical Physics Group, Institute of Diagnostic and Interventional Radiology, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany
| | - Karl Oliver Kagan
- Department of Women's Health, University of Tübingen, Tübingen, Germany
| | | | - Birgit Derntl
- Department of Psychiatry and Psychotherapy, Innovative Neuroimaging, Tübingen Center for Mental Health (TüCMH), University of Tübingen, Tübingen, Germany
- Lead Graduate School, University of Tübingen, Tübingen, Germany
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20
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Sheppard PAS, Puri TA, Galea LAM. Sex Differences and Estradiol Effects in MAPK and Akt Cell Signaling across Subregions of the Hippocampus. Neuroendocrinology 2022; 112:621-635. [PMID: 34407537 DOI: 10.1159/000519072] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 08/16/2021] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Rapid effects of estrogens within the hippocampus of rodents are dependent upon cell-signaling cascades, and activation of these cascades by estrogens varies by sex. Whether these pathways are rapidly activated within the dentate gyrus (DG) and CA1 by estrogens across sex and the anatomical longitudinal axis has been overlooked. METHODS Gonadally intact female and male rats were given either vehicle or physiological systemic low (1.1 µg/kg) or high (37.3 µg/kg) doses of 17β-estradiol 30 min prior to tissue collection. To control for the effects of circulating estrogens, an additional group of female rats was ovariectomized (OVX) and administered 17β-estradiol. Brains were extracted, and tissue punches of the CA1 and DG were taken along the longitudinal hippocampal axis (dorsal and ventral) and analyzed for key mitogen-activated protein kinase (MAPK) and protein kinase B (Akt) cascade phosphoproteins. RESULTS Intact females had higher Akt pathway phosphoproteins (pAkt, pGSK-3β, and pp70S6K) than males in the DG (dorsal and ventral) and lower pERK1/2 in the dorsal DG. Most effects of 17β-estradiol on cell signaling occurred in OVX animals. In OVX animals, 17β-estradiol increased cell signaling of MAPK and Akt phosphoproteins (pERK1/2, pJNK, pAkt, and pGSK-3β) in the CA1 and pERK1/2 and pJNK DG. DISCUSSION/CONCLUSIONS Systemic 17β-estradiol treatment rapidly alters phosphoprotein levels in the hippocampus, dependent on reproductive status, and intact females have greater expression of Akt phosphoproteins than that in intact males in the DG. These findings shed light on underlying mechanisms of sex differences in hippocampal function and response to interventions that affect MAPK or Akt signaling.
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Affiliation(s)
- Paul A S Sheppard
- Department of Psychology, University of British Columbia, Vancouver, British Columbia, Canada
- Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, British Columbia, Canada
| | - Tanvi A Puri
- Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, British Columbia, Canada
- Graduate Program in Neuroscience, University of British Columbia, Vancouver, British Columbia, Canada
| | - Liisa A M Galea
- Department of Psychology, University of British Columbia, Vancouver, British Columbia, Canada
- Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, British Columbia, Canada
- Graduate Program in Neuroscience, University of British Columbia, Vancouver, British Columbia, Canada
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21
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Maioli S, Leander K, Nilsson P, Nalvarte I. Estrogen receptors and the aging brain. Essays Biochem 2021; 65:913-925. [PMID: 34623401 PMCID: PMC8628183 DOI: 10.1042/ebc20200162] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 09/09/2021] [Accepted: 09/10/2021] [Indexed: 12/14/2022]
Abstract
The female sex hormone estrogen has been ascribed potent neuroprotective properties. It signals by binding and activating estrogen receptors that, depending on receptor subtype and upstream or downstream effectors, can mediate gene transcription and rapid non-genomic actions. In this way, estrogen receptors in the brain participate in modulating neural differentiation, proliferation, neuroinflammation, cholesterol metabolism, synaptic plasticity, and behavior. Circulating sex hormones decrease in the course of aging, more rapidly at menopause in women, and slower in men. This review will discuss what this drop entails in terms of modulating neuroprotection and resilience in the aging brain downstream of spatiotemporal estrogen receptor alpha (ERα) and beta (ERβ) signaling, as well as in terms of the sex differences observed in Alzheimer's disease (AD) and Parkinson's disease (PD). In addition, controversies related to ER expression in the brain will be discussed. Understanding the spatiotemporal signaling of sex hormones in the brain can lead to more personalized prevention strategies or therapies combating neurodegenerative diseases.
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Affiliation(s)
- Silvia Maioli
- Division of Neurogeriatrics, Department of Neurobiology, Care Sciences and Society, Center for Alzheimer Research, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Karin Leander
- Institute of Environmental Medicine, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Per Nilsson
- Division of Neurogeriatrics, Department of Neurobiology, Care Sciences and Society, Center for Alzheimer Research, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Ivan Nalvarte
- Department of Biosciences and Nutrition, Karolinska Institutet, 141 57 Huddinge, Sweden
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22
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17β-Estradiol Abrogates Oxidative Stress and Neuroinflammation after Cortical Stab Wound Injury. Antioxidants (Basel) 2021; 10:antiox10111682. [PMID: 34829553 PMCID: PMC8615181 DOI: 10.3390/antiox10111682] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 10/21/2021] [Accepted: 10/21/2021] [Indexed: 12/14/2022] Open
Abstract
Disruptions in brain energy metabolism, oxidative damage, and neuroinflammation are commonly seen in traumatic brain injury (TBI). Microglial activation is the hallmark of neuroinflammation. After brain injury, microglia also act as a double-edged sword with distinctive phenotypic changes. Therefore, therapeutic applications to potentiate microglia towards pro-inflammatory response following brain injury have become the focus of attention in recent years. Here, in the current study, we investigated the hypothesis that 17β-estradiol could rescue the mouse brain against apoptotic cell death and neurodegeneration by suppressing deleterious proinflammatory response probably by abrogating metabolic stress and oxidative damage after brain injury. Male C57BL/6N mice were used to establish a cortical stab wound injury (SWI) model. Immediately after brain injury, the mice were treated with 17β-estradiol (10 mg/kg, once every day via i.p. injection) for one week. Immunoblotting and immunohistochemical analysis was performed to examine the cortical and hippocampal brain regions. For the evaluation of reactive oxygen species (ROS), reduced glutathione (GSH), and oxidized glutathione (GSSG), we used specific kits. Our findings revealed that 17β-estradiol treatment significantly alleviated SWI-induced energy dyshomeostasis and oxidative stress by increasing the activity of phospho-AMPK (Thr172) and by regulating the expression of an antioxidant gene (Nrf2) and cytoprotective enzymes (HO-1 and GSH) to mitigate ROS. Importantly, 17β-estradiol treatment downregulated gliosis and proinflammatory markers (iNOS and CD64) while significantly augmenting an anti-inflammatory response as evidenced by the robust expression of TGF-β and IGF-1 after brain injury. The treatment with 17β-estradiol also reduced inflammatory mediators (Tnf-α, IL-1β, and COX-2) in the injured mouse. Moreover, 17β-estradiol administration rescued p53-associated apoptotic cell death in the SWI model by regulating the expression of Bcl-2 family proteins (Bax and Bcl-2) and caspase-3 activation. Finally, SWI + 17β-estradiol-treated mice illustrated reduced brain lesion volume and enhanced neurotrophic effect and the expression of synaptic proteins. These findings suggest that 17β-estradiol is an effective therapy against the brain secondary injury-induced pathological cascade following trauma, although further studies may be conducted to explore the exact mechanisms.
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Voldsbekk I, Barth C, Maximov II, Kaufmann T, Beck D, Richard G, Moberget T, Westlye LT, de Lange AG. A history of previous childbirths is linked to women's white matter brain age in midlife and older age. Hum Brain Mapp 2021; 42:4372-4386. [PMID: 34118094 PMCID: PMC8356991 DOI: 10.1002/hbm.25553] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 05/12/2021] [Accepted: 05/27/2021] [Indexed: 02/06/2023] Open
Abstract
Maternal brain adaptations occur in response to pregnancy, but little is known about how parity impacts white matter and white matter ageing trajectories later in life. Utilising global and regional brain age prediction based on multi-shell diffusion-weighted imaging data, we investigated the association between previous childbirths and white matter brain age in 8,895 women in the UK Biobank cohort (age range = 54-81 years). The results showed that number of previous childbirths was negatively associated with white matter brain age, potentially indicating a protective effect of parity on white matter later in life. Both global white matter and grey matter brain age estimates showed unique contributions to the association with previous childbirths, suggesting partly independent processes. Corpus callosum contributed uniquely to the global white matter association with previous childbirths, and showed a stronger relationship relative to several other tracts. While our findings demonstrate a link between reproductive history and brain white matter characteristics later in life, longitudinal studies are required to establish causality and determine how parity may influence women's white matter trajectories across the lifespan.
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Affiliation(s)
- Irene Voldsbekk
- NORMENT, Institute of Clinical Medicine, University of Oslo & Division of Mental Health and Addiction, Oslo University HospitalOsloNorway
- Department of Health and FunctioningWestern Norway University of Applied SciencesBergenNorway
| | - Claudia Barth
- NORMENT, Institute of Clinical Medicine, University of Oslo & Division of Mental Health and Addiction, Oslo University HospitalOsloNorway
| | - Ivan I. Maximov
- Department of Health and FunctioningWestern Norway University of Applied SciencesBergenNorway
- Department of PsychologyUniversity of OsloOsloNorway
| | - Tobias Kaufmann
- NORMENT, Institute of Clinical Medicine, University of Oslo & Division of Mental Health and Addiction, Oslo University HospitalOsloNorway
- Department of Psychiatry and PsychotherapyUniversity of TübingenTübingenGermany
| | - Dani Beck
- NORMENT, Institute of Clinical Medicine, University of Oslo & Division of Mental Health and Addiction, Oslo University HospitalOsloNorway
- Department of PsychologyUniversity of OsloOsloNorway
- Sunnaas Rehabilitation Hospital HTOsloNorway
| | - Genevieve Richard
- NORMENT, Institute of Clinical Medicine, University of Oslo & Division of Mental Health and Addiction, Oslo University HospitalOsloNorway
| | - Torgeir Moberget
- NORMENT, Institute of Clinical Medicine, University of Oslo & Division of Mental Health and Addiction, Oslo University HospitalOsloNorway
- Department of PsychologyUniversity of OsloOsloNorway
| | - Lars T. Westlye
- NORMENT, Institute of Clinical Medicine, University of Oslo & Division of Mental Health and Addiction, Oslo University HospitalOsloNorway
- Department of PsychologyUniversity of OsloOsloNorway
- KG Jebsen Centre for Neurodevelopmental DisordersUniversity of OsloOsloNorway
| | - Ann‐Marie G. de Lange
- NORMENT, Institute of Clinical Medicine, University of Oslo & Division of Mental Health and Addiction, Oslo University HospitalOsloNorway
- LREN, Centre for Research in Neurosciences, Department of Clinical NeurosciencesLausanne University Hospital (CHUV) and University of LausanneLausanneSwitzerland
- Department of PsychiatryUniversity of OxfordOxfordUK
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Koebele SV, Hiroi R, Plumley ZMT, Melikian R, Prakapenka AV, Patel S, Carson C, Kirby D, Mennenga SE, Mayer LP, Dyer CA, Bimonte-Nelson HA. Clinically Used Hormone Formulations Differentially Impact Memory, Anxiety-Like, and Depressive-Like Behaviors in a Rat Model of Transitional Menopause. Front Behav Neurosci 2021; 15:696838. [PMID: 34366807 PMCID: PMC8335488 DOI: 10.3389/fnbeh.2021.696838] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 06/04/2021] [Indexed: 01/29/2023] Open
Abstract
A variety of U.S. Food and Drug Administration-approved hormone therapy options are currently used to successfully alleviate unwanted symptoms associated with the changing endogenous hormonal milieu that occurs in midlife with menopause. Depending on the primary indication for treatment, different hormone therapy formulations are utilized, including estrogen-only, progestogen-only, or combined estrogen plus progestogen options. There is little known about how these formulations, or their unique pharmacodynamics, impact neurobiological processes. Seemingly disparate pre-clinical and clinical findings regarding the cognitive effects of hormone therapies, such as the negative effects associated with conjugated equine estrogens and medroxyprogesterone acetate vs. naturally circulating 17β-estradiol (E2) and progesterone, signal a critical need to further investigate the neuro-cognitive impact of hormone therapy formulations. Here, utilizing a rat model of transitional menopause, we administered either E2, progesterone, levonorgestrel, or combinations of E2 with progesterone or with levonorgestrel daily to follicle-depleted, middle-aged rats. A battery of assessments, including spatial memory, anxiety-like behaviors, and depressive-like behaviors, as well as endocrine status and ovarian follicle complement, were evaluated. Results indicate divergent outcomes for memory, anxiety, and depression, as well as unique physiological profiles, that were dependent upon the hormone regimen administered. Overall, the combination hormone treatments had the most consistently favorable profile for the domains evaluated in rats that had undergone experimentally induced transitional menopause and remained ovary-intact. The collective results underscore the importance of investigating variations in hormone therapy formulation as well as the menopause background upon which these formulations are delivered.
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Affiliation(s)
- Stephanie V. Koebele
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Ryoko Hiroi
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Zachary M. T. Plumley
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Ryan Melikian
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Alesia V. Prakapenka
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Shruti Patel
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Catherine Carson
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Destiney Kirby
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | - Sarah E. Mennenga
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
| | | | | | - Heather A. Bimonte-Nelson
- Department of Psychology, Arizona State University, Tempe, AZ, United States
- Arizona Alzheimer’s Consortium, Phoenix, AZ, United States
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Carrano A, Juarez JJ, Incontri D, Ibarra A, Cazares HG. Sex-Specific Differences in Glioblastoma. Cells 2021; 10:cells10071783. [PMID: 34359952 PMCID: PMC8303471 DOI: 10.3390/cells10071783] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 07/08/2021] [Accepted: 07/09/2021] [Indexed: 12/13/2022] Open
Abstract
Sex differences have been well identified in many brain tumors. Even though glioblastoma (GBM) is the most common primary malignant brain tumor in adults and has the worst outcome, well-established differences between men and women are limited to incidence and outcome. Little is known about sex differences in GBM at the disease phenotype and genetical/molecular level. This review focuses on a deep understanding of the pathophysiology of GBM, including hormones, metabolic pathways, the immune system, and molecular changes, along with differences between men and women and how these dimorphisms affect disease outcome. The information analyzed in this review shows a greater incidence and worse outcome in male patients with GBM compared with female patients. We highlight the protective role of estrogen and the upregulation of androgen receptors and testosterone having detrimental effects on GBM. Moreover, hormones and the immune system work in synergy to directly affect the GBM microenvironment. Genetic and molecular differences have also recently been identified. Specific genes and molecular pathways, either upregulated or downregulated depending on sex, could potentially directly dictate GBM outcome differences. It appears that sexual dimorphism in GBM affects patient outcome and requires an individualized approach to management considering the sex of the patient, especially in relation to differences at the molecular level.
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Affiliation(s)
- Anna Carrano
- Department of Neurologic Surgery, Mayo Clinic, Jacksonville, FL 32224, USA;
| | - Juan Jose Juarez
- Centro de Investigación en Ciencias de la Salud (CICSA), FCS, Universidad Anáhuac México Campus Norte, Huixquilucan 52786, Edo. de México, Mexico; (J.J.J.); (D.I.); (A.I.)
| | - Diego Incontri
- Centro de Investigación en Ciencias de la Salud (CICSA), FCS, Universidad Anáhuac México Campus Norte, Huixquilucan 52786, Edo. de México, Mexico; (J.J.J.); (D.I.); (A.I.)
| | - Antonio Ibarra
- Centro de Investigación en Ciencias de la Salud (CICSA), FCS, Universidad Anáhuac México Campus Norte, Huixquilucan 52786, Edo. de México, Mexico; (J.J.J.); (D.I.); (A.I.)
| | - Hugo Guerrero Cazares
- Department of Neurologic Surgery, Mayo Clinic, Jacksonville, FL 32224, USA;
- Correspondence:
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Carrizo E, Domini J, Quezada RYJ, Serra SV, Soria EA, Miranda AR. [Variations of the cognitive status in the puerperium and their determinants: a narrative review]. CIENCIA & SAUDE COLETIVA 2021; 25:3321-3334. [PMID: 32785563 DOI: 10.1590/1413-81232020258.26232018] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 11/05/2018] [Indexed: 12/18/2022] Open
Abstract
The neurobiological modifications that women experience during the puerperium, together with the consequent psychosocial changes, lead to variations in cognitive functions. In order to describe the cognitive variations that occur during postpartum and the determining factors, a narrative review was conducted by means of a bibliographic search in PubMed and Google Scholar. A steady increase in the number of published works was located (PubMed = 186; Google Scholar = 26,730). The analysis of the articles made it possible to: a) characterize the cognitive functions during the puerperium; b) analyze the neuropsychological effects produced by the endocrinological and anatomophysiological changes; c) analyze the effect of the quality of sleep on cognition; d) analyze cognitive functions according to obstetric experiences. In conclusion, puerperal women are characterized by variations in their cognitive functions, which are determined by structural, functional, psychological and social changes. It is necessary to conduct neuropsychological research in this population, since postpartum care still focuses on the care of the newborn, without addressing the puerperal woman in a comprehensive manner.
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Affiliation(s)
- Eugenia Carrizo
- Escuela de Fonoaudiología, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba. Av. La Reforma, Ciudad Universitaria. 5014 Córdoba Argentina.
| | - Julia Domini
- Escuela de Fonoaudiología, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba. Av. La Reforma, Ciudad Universitaria. 5014 Córdoba Argentina.
| | - Ruth Yohana Julieta Quezada
- Escuela de Fonoaudiología, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba. Av. La Reforma, Ciudad Universitaria. 5014 Córdoba Argentina.
| | - Silvana Valeria Serra
- Escuela de Fonoaudiología, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba. Av. La Reforma, Ciudad Universitaria. 5014 Córdoba Argentina.
| | - Elio Andrés Soria
- Consejo Nacional de Investigaciones Científicas y Técnicas. Córdoba Argentina
| | - Agustín Ramiro Miranda
- Escuela de Fonoaudiología, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba. Av. La Reforma, Ciudad Universitaria. 5014 Córdoba Argentina.
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Montoya ZT, Uhernik AL, Smith JP. Comparison of cannabidiol to citalopram in targeting fear memory in female mice. J Cannabis Res 2020; 2:48. [PMID: 33526146 PMCID: PMC7819293 DOI: 10.1186/s42238-020-00055-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 11/24/2020] [Indexed: 12/26/2022] Open
Abstract
Background Cannabidiol (CBD) and selective serotonin reuptake inhibitors (SSRIs) are currently used to treat post-traumatic stress disorder (PTSD). However, these drugs are commonly studied after dosing just prior to extinction training, and there are gaps in our understanding of how they affect fear memory formation, their comparative effects on various types of memory, and of sexual dimorphisms in effects. Also, more studies involving female subjects are needed to balance the gender-inequality in the literature. Therefore, the purpose of this study was to directly compare the effects of CBD to citalopram in affecting the formation of auditory cued, contextual, and generalized fear memory, and to evaluate how extinction of these different memories was altered by pre-acquisition treatment in female mice. We also evaluated the impact of the estrous cycle on each of these. Methods Auditory-cued trace fear conditioning was conducted shortly after dosing female C57BL/6 mice, with either CBD or citalopram (10 mg/kg each), by pairing auditory tones with mild foot shocks. Auditory-cued, contextual, and generalized fear memory was assessed by measuring freezing responses, with an automated fear conditioning system, 24 h after conditioning. Each memory type was then evaluated every 24 h, over a 4-day period in total, to create an extinction profile. Freezing outcomes were statistically compared by ANOVA with Tukey HSD post hoc analysis, N = 12 mice per experimental group. Evaluation of sexual dimorphism was by comparison to historical data from male mice. Results Auditory cue-associated fear memory was not affected with CBD or citalopram; however, contextual memory was reduced with CBD by 11%, p < 0.05, but not citalopram, and generalized fear memory was reduced with CBD and citalopram, 20% and 22%, respectively, p < 0.05. Extinction learning was enhanced with CBD and citalopram, but, there was considerable memory-type variability between drug effects, with freezing levels reduced at the end of training by 9 to 17% for CBD, and 10 to 12% with citalopram. The estrous cycle did not affect any outcomes. Conclusions Both drugs are potent modifiers of fear memory formation; however, there is considerable divergence in their targeting of different memory types which, overall, could support the use of CBD as an alternative to SSRIs for treating PTSD in females, but not males. A limitation of the study was that it compared data from experiments done at different times to evaluate sexual dimorphism. Overall, this suggests that more research is necessary to guide any therapeutic approach involving CBD.
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Affiliation(s)
- Zackary T Montoya
- Colorado State University-Pueblo, 2200 Bonforte Blvd, Pueblo, CO, 81001, USA
| | - Amy L Uhernik
- Colorado State University-Pueblo, 2200 Bonforte Blvd, Pueblo, CO, 81001, USA
| | - Jeffrey P Smith
- Colorado State University-Pueblo, 2200 Bonforte Blvd, Pueblo, CO, 81001, USA.
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28
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de Lange AG, Barth C, Kaufmann T, Anatürk M, Suri S, Ebmeier KP, Westlye LT. The maternal brain: Region-specific patterns of brain aging are traceable decades after childbirth. Hum Brain Mapp 2020; 41:4718-4729. [PMID: 32767637 PMCID: PMC7555081 DOI: 10.1002/hbm.25152] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 06/30/2020] [Accepted: 07/16/2020] [Indexed: 12/11/2022] Open
Abstract
Pregnancy involves maternal brain adaptations, but little is known about how parity influences women's brain aging trajectories later in life. In this study, we replicated previous findings showing less apparent brain aging in women with a history of childbirths, and identified regional brain aging patterns linked to parity in 19,787 middle- and older-aged women. Using novel applications of brain-age prediction methods, we found that a higher number of previous childbirths were linked to less apparent brain aging in striatal and limbic regions. The strongest effect was found in the accumbens-a key region in the mesolimbic reward system, which plays an important role in maternal behavior. While only prospective longitudinal studies would be conclusive, our findings indicate that subcortical brain modulations during pregnancy and postpartum may be traceable decades after childbirth.
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Affiliation(s)
- Ann‐Marie G. de Lange
- Department of PsychiatryUniversity of OxfordOxfordUK
- Department of PsychologyUniversity of OsloOsloNorway
- NORMENT, Institute of Clinical Medicine, University of Oslo, & Division of Mental Health and AddictionOslo University HospitalOsloNorway
| | - Claudia Barth
- NORMENT, Institute of Clinical Medicine, University of Oslo, & Division of Mental Health and AddictionOslo University HospitalOsloNorway
| | - Tobias Kaufmann
- NORMENT, Institute of Clinical Medicine, University of Oslo, & Division of Mental Health and AddictionOslo University HospitalOsloNorway
| | - Melis Anatürk
- Department of PsychiatryUniversity of OxfordOxfordUK
- Wellcome Centre for Integrative NeuroimagingUniversity of OxfordOxfordUK
| | - Sana Suri
- Department of PsychiatryUniversity of OxfordOxfordUK
- Wellcome Centre for Integrative NeuroimagingUniversity of OxfordOxfordUK
| | | | - Lars T. Westlye
- Department of PsychologyUniversity of OsloOsloNorway
- NORMENT, Institute of Clinical Medicine, University of Oslo, & Division of Mental Health and AddictionOslo University HospitalOsloNorway
- KG Jebsen Centre for Neurodevelopmental DisordersUniversity of OsloOsloNorway
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Abstract
AIMS To investigate the association between parity and the risk of incident dementia in women. METHODS We pooled baseline and follow-up data for community-dwelling women aged 60 or older from six population-based, prospective cohort studies from four European and two Asian countries. We investigated the association between parity and incident dementia using Cox proportional hazards regression models adjusted for age, educational level, hypertension, diabetes mellitus and cohort, with additional analysis by dementia subtype (Alzheimer dementia (AD) and non-Alzheimer dementia (NAD)). RESULTS Of 9756 women dementia-free at baseline, 7010 completed one or more follow-up assessments. The mean follow-up duration was 5.4 ± 3.1 years and dementia developed in 550 participants. The number of parities was associated with the risk of incident dementia (hazard ratio (HR) = 1.07, 95% confidence interval (CI) = 1.02-1.13). Grand multiparity (five or more parities) increased the risk of dementia by 30% compared to 1-4 parities (HR = 1.30, 95% CI = 1.02-1.67). The risk of NAD increased by 12% for every parity (HR = 1.12, 95% CI = 1.02-1.23) and by 60% for grand multiparity (HR = 1.60, 95% CI = 1.00-2.55), but the risk of AD was not significantly associated with parity. CONCLUSIONS Grand multiparity is a significant risk factor for dementia in women. This may have particularly important implications for women in low and middle-income countries where the fertility rate and prevalence of grand multiparity are high.
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Jorgensen C, Wang Z. Hormonal Regulation of Mammalian Adult Neurogenesis: A Multifaceted Mechanism. Biomolecules 2020; 10:biom10081151. [PMID: 32781670 PMCID: PMC7465680 DOI: 10.3390/biom10081151] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 07/27/2020] [Accepted: 08/01/2020] [Indexed: 02/07/2023] Open
Abstract
Adult neurogenesis—resulting in adult-generated functioning, integrated neurons—is still one of the most captivating research areas of neuroplasticity. The addition of new neurons in adulthood follows a seemingly consistent multi-step process. These neurogenic stages include proliferation, differentiation, migration, maturation/survival, and integration of new neurons into the existing neuronal network. Most studies assessing the impact of exogenous (e.g., restraint stress) or endogenous (e.g., neurotrophins) factors on adult neurogenesis have focused on proliferation, survival, and neuronal differentiation. This review will discuss the multifaceted impact of hormones on these various stages of adult neurogenesis. Specifically, we will review the evidence for hormonal facilitation (via gonadal hormones), inhibition (via glucocorticoids), and neuroprotection (via recruitment of other neurochemicals such as neurotrophin and neuromodulators) on newly adult-generated neurons in the mammalian brain.
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Affiliation(s)
- Claudia Jorgensen
- Behavioral Science Department, Utah Valley University, Orem, UT 84058, USA
- Correspondence:
| | - Zuoxin Wang
- Psychology Department and Program in Neuroscience, Florida State University, Tallahassee, FL 32306, USA;
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Female rats are resilient to the behavioral effects of maternal separation stress and exhibit stress-induced neurogenesis. Heliyon 2020; 6:e04753. [PMID: 32885081 PMCID: PMC7452405 DOI: 10.1016/j.heliyon.2020.e04753] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 07/06/2020] [Accepted: 08/17/2020] [Indexed: 11/23/2022] Open
Abstract
Early-life stress causes anxiogenesis and sensitivity of stress endocrine axis, facilitated by changes in the basolateral amygdala and hippocampal neurogenesis. In this report, we examined if male-like relationship between early-life stress and anxiety was recapitulated in female rats, along with related neurobiological substrates of the amygdala and the hippocampus. Maternal separation, a paradigm consistently utilized in male rats in most previously published scripts, did not cause similar behavioral consequences in females. Maternal separation caused an increase in adult hippocampal neurogenesis in females without causing substantial differences in dendritic arbors of the basolateral amygdala. Thus, female rats displayed remarkable resilience in the emotional consequences of early-life stress.
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Barth C, de Lange AMG. Towards an understanding of women's brain aging: the immunology of pregnancy and menopause. Front Neuroendocrinol 2020; 58:100850. [PMID: 32504632 DOI: 10.1016/j.yfrne.2020.100850] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 03/23/2020] [Accepted: 05/20/2020] [Indexed: 02/06/2023]
Abstract
Women are at significantly greater risk of developing Alzheimer's disease and show higher prevalence of autoimmune conditions relative to men. Women's brain health is historically understudied, and little is therefore known about the mechanisms underlying epidemiological sex differences in neurodegenerative diseases, and how female-specific factors may influence women's brain health across the lifespan. In this review, we summarize recent studies on the immunology of pregnancy and menopause, emphasizing that these major immunoendocrine transition phases may play a critical part in women's brain aging trajectories.
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Affiliation(s)
- Claudia Barth
- Norwegian Centre for Mental Disorders Research, Institute of Clinical Medicine, University of Oslo, Oslo, Norway.
| | - Ann-Marie G de Lange
- Department of Psychology, University of Oslo, Oslo, Norway; Norwegian Centre for Mental Disorders Research, Institute of Clinical Medicine, University of Oslo, Oslo, Norway; Department of Psychiatry, University of Oxford, Warneford Hospital, Oxford, UK.
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Guan L, Yu WS, Shrestha S, Or YZ, Lufkin T, Chan YS, Lin VCL, Lim LW. TTC9A deficiency induces estradiol-mediated changes in hippocampus and amygdala neuroplasticity-related gene expressions in female mice. Brain Res Bull 2020; 157:162-168. [PMID: 32057953 DOI: 10.1016/j.brainresbull.2020.02.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 12/23/2019] [Accepted: 02/07/2020] [Indexed: 01/03/2023]
Abstract
The involvement of tetratricopeptide repeat domain 9A (TTC9A) deficiency in anxiety-like responses and behavioral despair through estradiol action on the serotonergic system has been reported. Emerging evidence suggests that estradiol is a potent modulator of neuroplasticity. As estradiol and neuroplasticity changes are both implicated in mood regulation, and estradiol activity is negatively regulated by TTC9A, we hypothesized that the behavioral changes induced by Ttc9a-/- is also mediated by neuroplasticity-related mechanisms. To understand the effects of TTC9A and estradiol modulation on neuroplasticity functions, we performed a behavioral analysis of tail suspension immobility and neuroplasticity-related gene expression study of brain samples collected in a previous study involving ovariectomized (OVX) Ttc9a-/- mice with estradiol or vehicle treatment. We observed that OVX-Ttc9a-/- mice had significantly reduced the tail suspension immobility compared to OVX-Ttc9a-/- estradiol-treated mice. Interestingly, there was an upregulation in gene expression of tropomyosin receptor kinase B (Trkb) in the ventral hippocampus, as well as brain-derived neurotrophic factor (Bdnf) and postsynaptic density protein-95 (Psd-95) in the amygdala of OVX-Ttc9a-/- mice compared to those treated with estradiol. These findings indicate that estradiol plays an inhibitory role in neuroplasticity in Ttc9a-/- mice. These observations were not found in the wildtype mice, as the presence of TTC9A suppressed the effects of estradiol. Our data suggest the behavioral alterations in Ttc9a-/- mice were mediated by estradiol regulation involving neuroplasticity-related mechanisms in both the hippocampus and amygdala regions.
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Affiliation(s)
- Li Guan
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region; Department of Physiology, Guangzhou University of Chinese Medicine, Guangdong, PR China
| | - Wing Shan Yu
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region
| | - Smeeta Shrestha
- School of Biological Sciences, Nanyang Technological University, Singapore
| | - Yu Zuan Or
- School of Biological Sciences, Nanyang Technological University, Singapore
| | - Thomas Lufkin
- Department of Biology, Clarkson University, Potsdam, New York, United States
| | - Ying-Shing Chan
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region
| | | | - Lee Wei Lim
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region.
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Conner MR, Adeyemi OM, Anderson BJ, Kritzer MF. Domain-specific contributions of biological sex and sex hormones to what, where and when components of episodic-like memory in adult rats. Eur J Neurosci 2020; 52:2705-2723. [PMID: 31943448 DOI: 10.1111/ejn.14676] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 01/03/2020] [Accepted: 01/08/2020] [Indexed: 12/21/2022]
Abstract
Episodic memory involves the integration and recall of discrete events that include information about what happened, where it happened and when it occurred. Episodic memory function is critical to daily life, and its dysfunction is both a first identifiable indicator and an enduring core feature of cognitive decline in ageing and in neuropsychiatric disorders including Alzheimer's disease and schizophrenia. Available evidence from human studies suggests that biological sex and sex hormones modulate episodic memory function in health and disease. However, knowledge of how this occurs is constrained by the limited availability and underutilization of validated animal models in investigating hormone impacts on episodic-like memory function. Here, adult female, adult male and gonadally manipulated adult male rats were tested on the what-where-when episodic-like memory task to determine whether rats model human sex differences in episodic memory and how the hormonal milieu impacts episodic-like memory processes in this species. These studies revealed salient ways in which rats model human sex differences in episodic memory, including a male advantage in spatial episodic memory performance. They also identified domain-specific roles for oestrogens and androgens in modulating what, where and when discriminations in male rats that were unlike those engaged in corresponding novel object recognition and novel object location tasks. These studies thus identify rats and the what-where-when task as suitable for investigating the neuroendocrine bases of episodic-like memory, and provide new information about the unique contributions that sex and sex hormones make to this complex mnemonic process.
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Affiliation(s)
- Meagan R Conner
- Graduate Program in Neuroscience, Stony Brook University, Stony Brook, NY, USA.,Department of Neurobiology and Behavior, Stony Brook University, Stony Brook, NY, USA
| | | | - Brenda J Anderson
- Department of Psychology, Stony Brook University, Stony Brook, NY, USA
| | - Mary F Kritzer
- Department of Neurobiology and Behavior, Stony Brook University, Stony Brook, NY, USA
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35
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Gurvich C, Thomas N, Kulkarni J. Sex differences in cognition and aging and the influence of sex hormones. HANDBOOK OF CLINICAL NEUROLOGY 2020; 175:103-115. [PMID: 33008519 DOI: 10.1016/b978-0-444-64123-6.00008-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Sex differences in cognitive functioning have been consistently reported in some cognitive tasks, with varying effect sizes. The most consistent findings in healthy adults are sex differences in the areas of mental rotation and aspects of attention and verbal memory. Sex differences in the vulnerability and manifestation of several psychiatric and neurologic diseases that involve cognitive disruption provide strong justification to continue investigating the social and biologic influences that underpin sex differences in cognitive functioning across health and disease. The biologic influences are thought to include genetic and epigenetic factors, sex chromosomes, and sex hormones. Sex steroid hormones that regulate reproductive function have multiple effects on the development, maintenance, and function of the brain, including significant effects on cognitive functioning. The aim of the current chapter is to provide a theoretical review of sex differences across different cognitive domains in adulthood and aging, as well as provide an overview on the role of sex hormones in cognitive function and cognitive decline.
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Affiliation(s)
- Caroline Gurvich
- Monash Alfred Psychiatry Research Centre, Monash University Central Clinical School and Alfred Hospital, Melbourne, VIC, Australia.
| | - Natalie Thomas
- Monash Alfred Psychiatry Research Centre, Monash University Central Clinical School and Alfred Hospital, Melbourne, VIC, Australia
| | - Jayashri Kulkarni
- Monash Alfred Psychiatry Research Centre, Monash University Central Clinical School and Alfred Hospital, Melbourne, VIC, Australia
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36
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Herrera JL, Ordoñez-Gutierrez L, Fabrias G, Casas J, Morales A, Hernandez G, Acosta NG, Rodriguez C, Prieto-Valiente L, Garcia-Segura LM, Wandosell FG, Alonso R. Ovarian Hormone-Dependent Effects of Dietary Lipids on APP/PS1 Mouse Brain. Front Aging Neurosci 2019; 11:346. [PMID: 31920626 PMCID: PMC6930904 DOI: 10.3389/fnagi.2019.00346] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 11/26/2019] [Indexed: 12/30/2022] Open
Abstract
The formation of senile plaques through amyloid-β peptide (Aβ) aggregation is a hallmark of Alzheimer’s disease (AD). Irrespective of its actual role in the synaptic alterations and cognitive impairment associated with AD, different therapeutic approaches have been proposed to reduce plaque formation. In rodents, daily intake of omega-3 (n-3) long-chain polyunsaturated fatty acids (LC-PUFAs) is required for neural development, and there is experimental and epidemiological evidence that their inclusion in the diet has positive effects on several neurodegenerative diseases. Similarly, estradiol appears to reduce senile plaque formation in primary mouse cell cultures, human cortical neurons and mouse AD models, and it prevents Aβ toxicity in neural cell lines. We previously showed that differences in dietary n-6/n-3 LC-PUFAs ratios modify the lipid composition in the cerebral cortex of female mice and the levels of amyloid precursor protein (APP) in the brain. These effects depended in part on the presence of circulating estradiol. Here we explored whether this potentially synergistic action between diet and ovarian hormones may influence the progression of amyloidosis in an AD mouse model. Our results show that a diet with high n-3 LC-PUFA content, especially DHA (22:6n-3), reduces the hippocampal accumulation of Aβ1–40, but not amyloid Aβ1–42 in female APPswe/PS1 E9A mice, an effect that was counteracted by the loss of the ovaries and that depended on circulating estradiol. In addition, this interaction between dietary lipids and ovarian function also affects the composition of the brain lipidome as well as the expression of certain neuronal signaling and synaptic proteins. These findings provide new insights into how ovarian hormones and dietary composition affect the brain lipidome and amyloid burden. Furthermore, they strongly suggest that when designing dietary or pharmacological strategies to combat human neurodegenerative diseases, hormonal and metabolic status should be specifically taken into consideration as it may affect the therapeutic response.
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Affiliation(s)
- Jose Luis Herrera
- Departamento de Ciencias Médicas Básicas, Instituto de Tecnologías Biomédicas-Centro de Investigaciones Biomédicas de Canarias, Universidad de La Laguna, San Cristóbal de La Laguna, Spain
| | - Lara Ordoñez-Gutierrez
- Centro de Biología Molecular "Severo Ochoa" (CSIC-UAM), Universidad Autónoma de Madrid, Madrid, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas, Madrid, Spain
| | - Gemma Fabrias
- Instituto de Química Avanzada de Cataluña (IQAC-CSIC), Barcelona, Spain
| | - Josefina Casas
- Instituto de Química Avanzada de Cataluña (IQAC-CSIC), Barcelona, Spain
| | - Araceli Morales
- Departamento de Ciencias Médicas Básicas, Instituto de Tecnologías Biomédicas-Centro de Investigaciones Biomédicas de Canarias, Universidad de La Laguna, San Cristóbal de La Laguna, Spain
| | - Guadalberto Hernandez
- Departamento de Ciencias Médicas Básicas, Instituto de Tecnologías Biomédicas-Centro de Investigaciones Biomédicas de Canarias, Universidad de La Laguna, San Cristóbal de La Laguna, Spain
| | - Nieves G Acosta
- Departamento de Biología Animal, Edafología y Geología, Instituto de Tecnologías Biomédicas-Centro de Investigaciones Biomédicas de Canarias, Universidad de La Laguna, San Cristóbal de La Laguna, Spain
| | - Covadonga Rodriguez
- Departamento de Ciencias Médicas Básicas, Instituto de Tecnologías Biomédicas-Centro de Investigaciones Biomédicas de Canarias, Universidad de La Laguna, San Cristóbal de La Laguna, Spain
| | | | - Luis M Garcia-Segura
- Instituto Cajal, CSIC, Madrid, Spain.,Centro de Investigación Biomédica en Red de Fragilidad y Envejecimiento Saludable, Madrid, Spain
| | - Francisco G Wandosell
- Centro de Biología Molecular "Severo Ochoa" (CSIC-UAM), Universidad Autónoma de Madrid, Madrid, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas, Madrid, Spain
| | - Rafael Alonso
- Departamento de Ciencias Médicas Básicas, Instituto de Tecnologías Biomédicas-Centro de Investigaciones Biomédicas de Canarias, Universidad de La Laguna, San Cristóbal de La Laguna, Spain
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37
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Herrera-Morales WV, Herrera-Solís A, Núñez-Jaramillo L. Sexual Behavior and Synaptic Plasticity. ARCHIVES OF SEXUAL BEHAVIOR 2019; 48:2617-2631. [PMID: 31270644 DOI: 10.1007/s10508-019-01483-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 05/30/2019] [Accepted: 06/01/2019] [Indexed: 06/09/2023]
Abstract
Although sex drive is present in many animal species, sexual behavior is not static and, like many other behaviors, can be modified by experience. This modification relies on synaptic plasticity, a sophisticated mechanism through which neurons change how they process a given stimulus, and the neurophysiological basis of learning. This review addresses the main plastic effects of steroid sex hormones in the central nervous system (CNS) and the effects of sexual experience on the CNS, including effects on neurogenesis, intracellular signaling, gene expression, and changes in dendritic spines, as well as behavioral changes.
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Affiliation(s)
- Wendy Verónica Herrera-Morales
- División de Ciencias de la Salud, Universidad de Quintana Roo, Av. Erick Paolo Martínez S/N esquina Av 4 de marzo. Colonia Magisterial, 77039, Chetumal, Quintana Roo, Mexico
| | - Andrea Herrera-Solís
- Laboratorio Efectos Terapéuticos de los Canabinoides, Subdirección de Investigación Biomédica, Hospital General Dr. Manuel Gea González, Ciudad de México, Mexico
| | - Luis Núñez-Jaramillo
- División de Ciencias de la Salud, Universidad de Quintana Roo, Av. Erick Paolo Martínez S/N esquina Av 4 de marzo. Colonia Magisterial, 77039, Chetumal, Quintana Roo, Mexico.
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38
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Cohan CH, Youbi M, Saul I, Ruiz AA, Furones CC, Patel P, Perez E, Raval AP, Dave KR, Zhao W, Dong C, Rundek T, Koch S, Sacco RL, Perez-Pinzon MA. Sex-Dependent Differences in Physical Exercise-Mediated Cognitive Recovery Following Middle Cerebral Artery Occlusion in Aged Rats. Front Aging Neurosci 2019; 11:261. [PMID: 31619985 PMCID: PMC6759590 DOI: 10.3389/fnagi.2019.00261] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 09/04/2019] [Indexed: 01/14/2023] Open
Abstract
Stroke remains a leading cause of death and disability in the United States. No current treatments exist to promote cognitive recovery in survivors of stroke. A previous study from our laboratory determined that an acute bout of forced treadmill exercise was able to promote cognitive recovery in 3 month old male rats after middle cerebral artery occlusion (MCAo). In this study, we tested the hypothesis that 6 days of intense acute bout of forced treadmill exercise (physical exercise – PE) promotes cognitive recovery in 11–14 month old male rats. We determined that PE was able to ameliorate cognitive deficits as determined by contextual fear conditioning. Additionally, we also tested the hypothesis that PE promotes cognitive recovery in 11–13 month old reproductive senescent female rats. In contrast to males, the same intensity of exercise that decrease cognitive deficits in males was not able to promote cognitive recovery in female rats. Additionally, we determined that exercise did not lessen infarct volume in both male and female rats. There are many factors that contribute to higher stroke mortality and morbidities in women and thus, future studies will investigate the effects of PE in aged female rats to identify sex differences.
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Affiliation(s)
- Charles H Cohan
- Peritz Scheinberg Cerebral Vascular Disease Research Laboratory, Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Mehdi Youbi
- Peritz Scheinberg Cerebral Vascular Disease Research Laboratory, Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Isabel Saul
- Peritz Scheinberg Cerebral Vascular Disease Research Laboratory, Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Alex A Ruiz
- Peritz Scheinberg Cerebral Vascular Disease Research Laboratory, Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Concepcion C Furones
- Peritz Scheinberg Cerebral Vascular Disease Research Laboratory, Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Pujan Patel
- Peritz Scheinberg Cerebral Vascular Disease Research Laboratory, Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Edwin Perez
- Peritz Scheinberg Cerebral Vascular Disease Research Laboratory, Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Ami P Raval
- Peritz Scheinberg Cerebral Vascular Disease Research Laboratory, Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Kunjan R Dave
- Peritz Scheinberg Cerebral Vascular Disease Research Laboratory, Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Weizhao Zhao
- Peritz Scheinberg Cerebral Vascular Disease Research Laboratory, Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Chuanhui Dong
- Peritz Scheinberg Cerebral Vascular Disease Research Laboratory, Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Tatjana Rundek
- Peritz Scheinberg Cerebral Vascular Disease Research Laboratory, Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Sebastian Koch
- Peritz Scheinberg Cerebral Vascular Disease Research Laboratory, Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Ralph L Sacco
- Peritz Scheinberg Cerebral Vascular Disease Research Laboratory, Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Miguel A Perez-Pinzon
- Peritz Scheinberg Cerebral Vascular Disease Research Laboratory, Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, United States
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39
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Gava G, Orsili I, Alvisi S, Mancini I, Seracchioli R, Meriggiola MC. Cognition, Mood and Sleep in Menopausal Transition: The Role of Menopause Hormone Therapy. MEDICINA (KAUNAS, LITHUANIA) 2019; 55:E668. [PMID: 31581598 PMCID: PMC6843314 DOI: 10.3390/medicina55100668] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Revised: 09/23/2019] [Accepted: 09/27/2019] [Indexed: 12/22/2022]
Abstract
During the menopausal transition, which begins four to six years before cessation of menses, middle-aged women experience a progressive change in ovarian activity and a physiologic deterioration of hypothalamic-pituitary-ovarian axis function associated with fluctuating hormone levels. During this transition, women can suffer symptoms related to menopause (such as hot flushes, sleep disturbance, mood changes, memory complaints and vaginal dryness). Neurological symptoms such as sleep disturbance, "brain fog" and mood changes are a major complaint of women transitioning menopause, with a significant impact on their quality of life, productivity and physical health. In this paper, we consider the associations between menopausal stage and/or hormone levels and sleep problems, mood and reduced cognitive performance. The role of estrogen and menopause hormone therapy (MHT) in cognitive function, sleep and mood are also discussed.
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Affiliation(s)
- Giulia Gava
- Gynecology and Physiopathology of Human Reproduction, S. Orsola-Malpighi Hospital, Department of Medical and Surgical Sciences (DIMEC), University of Bologna, 40138 Bologna, Italy.
| | - Isabella Orsili
- Gynecology and Physiopathology of Human Reproduction, S. Orsola-Malpighi Hospital, Department of Medical and Surgical Sciences (DIMEC), University of Bologna, 40138 Bologna, Italy
| | - Stefania Alvisi
- Gynecology and Physiopathology of Human Reproduction, S. Orsola-Malpighi Hospital, Department of Medical and Surgical Sciences (DIMEC), University of Bologna, 40138 Bologna, Italy
| | - Ilaria Mancini
- Gynecology and Physiopathology of Human Reproduction, S. Orsola-Malpighi Hospital, Department of Medical and Surgical Sciences (DIMEC), University of Bologna, 40138 Bologna, Italy
| | - Renato Seracchioli
- Gynecology and Physiopathology of Human Reproduction, S. Orsola-Malpighi Hospital, Department of Medical and Surgical Sciences (DIMEC), University of Bologna, 40138 Bologna, Italy
| | - Maria Cristina Meriggiola
- Gynecology and Physiopathology of Human Reproduction, S. Orsola-Malpighi Hospital, Department of Medical and Surgical Sciences (DIMEC), University of Bologna, 40138 Bologna, Italy
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40
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Tronson NC, Keiser AA. A Dynamic Memory Systems Framework for Sex Differences in Fear Memory. Trends Neurosci 2019; 42:680-692. [PMID: 31473031 DOI: 10.1016/j.tins.2019.07.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2019] [Revised: 06/17/2019] [Accepted: 07/29/2019] [Indexed: 01/04/2023]
Abstract
Emerging research demonstrates that a pattern of overlapping but distinct molecular and circuit mechanisms are engaged by males and females during memory tasks. Importantly, sex differences in neural mechanisms and behavioral strategies are evident even when performance on a memory task is similar between females and males. We propose that sex differences in memory may be best understood within a dynamic memory systems framework. Specifically, sex differences in hormonal influences and neural circuit development result in biases in the circuits engaged and the information preferentially stored or retrieved in males and females. By using animal models to understand the neural networks and molecular mechanisms required for memory in both sexes, we can gain crucial insights into sex and gender biases in disorders including post-traumatic stress disorder (PTSD) in humans.
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Affiliation(s)
- Natalie C Tronson
- Psychology Department, University of Michigan, Ann Arbor, MI 48109, USA.
| | - Ashley A Keiser
- Department of Neurobiology and Behavior, University of California, Irvine, CA 92697, USA
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41
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Possible Existence of the Hypothalamic-Pituitary-Hippocampal (HPH) Axis: A Reciprocal Relationship Between Hippocampal Specific Neuroestradiol Synthesis and Neuroblastosis in Ageing Brains with Special Reference to Menopause and Neurocognitive Disorders. Neurochem Res 2019; 44:1781-1795. [PMID: 31254250 DOI: 10.1007/s11064-019-02833-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 05/13/2019] [Accepted: 06/19/2019] [Indexed: 12/18/2022]
Abstract
The hippocampus-derived neuroestradiol plays a major role in neuroplasticity, independent of circulating estradiol that originates from gonads. The response of hypothalamus-pituitary regions towards the synthesis of neuroestradiol in the hippocampus is an emerging scientific concept in cognitive neuroscience. Hippocampal plasticity has been proposed to be regulated via neuroblasts, a major cellular determinant of functional neurogenesis in the adult brain. Defects in differentiation, integration and survival of neuroblasts in the hippocampus appear to be an underlying cause of neurocognitive disorders. Gonadotropin receptors and steroidogenic enzymes have been found to be expressed in neuroblasts in the hippocampus of the brain. However, the reciprocal relationship between hippocampal-specific neuroestradiol synthesis along neuroblastosis and response of pituitary based feedback regulation towards regulation of estradiol level in the hippocampus have not completely been ascertained. Therefore, this conceptual article revisits (1) the cellular basis of neuroestradiol synthesis (2) a potential relationship between neuroestradiol synthesis and neuroblastosis in the hippocampus (3) the possible involvement of aberrant neuroestradiol production with mitochondrial dysfunctions and dyslipidemia in menopause and adult-onset neurodegenerative disorders and (4) provides a hypothesis for the possible existence of the hypothalamic-pituitary-hippocampal (HPH) axis in the adult brain. Eventually, understanding the regulation of hippocampal neurogenesis by abnormal levels of neuroestradiol concentration in association with the feedback regulation of HPH axis might provide additional cues to establish a neuroregenerative therapeutic management for mood swings, depression and cognitive decline in menopause and neurocognitive disorders.
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42
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Neuroplasticity and Cognitive Training in Schizophrenia. Curr Behav Neurosci Rep 2019. [DOI: 10.1007/s40473-019-00178-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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43
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Abstract
Engaging in targeted exercise interventions is a promising, non-pharmacological strategy to mitigate the deleterious effects of aging and disease on brain health. However, despite its therapeutic potential, a large amount of variation exists in exercise efficacy in older adults aged 55 and older. In this review, we present the argument that biological sex may be an important moderator of the relationship between physical activity and cognition. Sex differences exist in dementia as well as in several associated risk factors, including genetics, cardiovascular factors, inflammation, hormones and social and psychological factors. Different exercise interventions, such as aerobic training and resistance training, influence cognition and brain health in older adults and these effects may be sex-dependent. The biological mechanisms underlying the beneficial effects of exercise on the brain may be different in males and females. Specifically, we examine sex differences in neuroplasticity, neurotrophic factors and physiological effects of exercise to highlight the possible mediators of sex differences in exercise efficacy on cognition. Future studies should address the potential sex difference in exercise efficacy if we are to develop effective, evidence-based exercise interventions to promote healthy brain aging for all individuals.
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Affiliation(s)
- Cindy K Barha
- Djavad Mowafaghian Centre for Brain Health, Vancouver, Canada.,Department of Physical Therapy, University of British Columbia, Vancouver, Canada
| | - Teresa Liu-Ambrose
- Djavad Mowafaghian Centre for Brain Health, Vancouver, Canada.,Department of Physical Therapy, University of British Columbia, Vancouver, Canada.,Centre for Hip Health and Mobility, Vancouver, Canada
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44
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Seitz J, Kubicki M, Jacobs EG, Cherkerzian S, Weiss BK, Papadimitriou G, Mouradian P, Buka S, Goldstein JM, Makris N. Impact of sex and reproductive status on memory circuitry structure and function in early midlife using structural covariance analysis. Hum Brain Mapp 2018; 40:1221-1233. [PMID: 30548738 DOI: 10.1002/hbm.24441] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 10/11/2018] [Accepted: 10/13/2018] [Indexed: 01/13/2023] Open
Abstract
Research on age-related memory alterations traditionally targets individuals aged ≥65 years. However, recent studies emphasize the importance of early aging processes. We therefore aimed to characterize variation in brain gray matter structure in early midlife as a function of sex and menopausal status. Subjects included 94 women (33 premenopausal, 29 perimenopausal, and 32 postmenopausal) and 99 demographically comparable men from the New England Family Study. Subjects were scanned with a high-resolution T1 sequence on a 3 T whole body scanner. Sex and reproductive-dependent structural differences were evaluated using Box's M test and analysis of covariances (ANCOVAs) for gray matter volumes. Brain regions of interest included dorsolateral prefrontal cortex (DLPFC), inferior parietal lobule (iPAR), anterior cingulate cortex (ACC), hippocampus (HIPP), and parahippocampus. While we observed expected significant sex differences in volume of hippocampus with women of all groups having higher volumes than men relative to cerebrum size, we also found significant differences in the covariance matrices of perimenopausal women compared with postmenopausal women. Associations between ACC and HIPP/iPAR/DLPFC were higher in postmenopausal women and correlated with better memory performance. Findings in this study underscore the importance of sex and reproductive status in early midlife for understanding memory function with aging.
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Affiliation(s)
- Johanna Seitz
- Psychiatry Neuroimaging Laboratory, Department of Psychiatry, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Marek Kubicki
- Psychiatry Neuroimaging Laboratory, Department of Psychiatry, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts.,Departments of Psychiatry, Neurology and Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Center for Morphometric Analysis, Center for Neural Systems Investigations, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts.,Department of Psychiatry, Obstetrics and Gynecology, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts
| | - Emily G Jacobs
- Department of Medicine, Harvard Medical School, Boston, Massachusetts.,Division of Women's Health, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Sara Cherkerzian
- Department of Psychiatry, Obstetrics and Gynecology, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts.,Department of Medicine, Harvard Medical School, Boston, Massachusetts.,Division of Women's Health, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Blair K Weiss
- Department of Medicine, Harvard Medical School, Boston, Massachusetts.,Division of Women's Health, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - George Papadimitriou
- Departments of Psychiatry, Neurology and Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Center for Morphometric Analysis, Center for Neural Systems Investigations, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts
| | - Palig Mouradian
- Departments of Psychiatry, Neurology and Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Center for Morphometric Analysis, Center for Neural Systems Investigations, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts
| | - Stephen Buka
- Department of Community Health, Brown University, Providence, Rhode Island
| | - Jill M Goldstein
- Departments of Psychiatry, Neurology and Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Center for Morphometric Analysis, Center for Neural Systems Investigations, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts.,Department of Psychiatry, Obstetrics and Gynecology, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts.,Department of Medicine, Harvard Medical School, Boston, Massachusetts.,Division of Women's Health, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Nikos Makris
- Psychiatry Neuroimaging Laboratory, Department of Psychiatry, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts.,Departments of Psychiatry, Neurology and Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Center for Morphometric Analysis, Center for Neural Systems Investigations, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts
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45
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Abstract
This article reviews the role of endogenous estrogen in neural and cognitive processing, followed by an examination of longitudinal cognitive data captured in various stages of the menopausal transition. The remaining text reviews the contradictory results from major hormone therapy trials to date, evidence for the "timing hypothesis," and closes with recommendations for future research and for practicing clinicians.
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46
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Gurvich C, Hoy K, Thomas N, Kulkarni J. Sex Differences and the Influence of Sex Hormones on Cognition through Adulthood and the Aging Process. Brain Sci 2018; 8:brainsci8090163. [PMID: 30154388 PMCID: PMC6162653 DOI: 10.3390/brainsci8090163] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 08/23/2018] [Accepted: 08/23/2018] [Indexed: 12/28/2022] Open
Abstract
Hormones of the hypothalamic-pituitary-gonadal (HPG) axis that regulate reproductive function have multiple effects on the development, maintenance and function of the brain. Sex differences in cognitive functioning have been reported in both health and disease, which may be partly attributed to sex hormones. The aim of the current paper was to provide a theoretical review of how sex hormones influence cognitive functioning across the lifespan as well as provide an overview of the literature on sex differences and the role of sex hormones in cognitive decline, specifically in relation to Alzheimer’s disease (AD). A summary of current hormone and sex-based interventions for enhancing cognitive functioning and/or reducing the risk of Alzheimer’s disease is also provided.
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Affiliation(s)
- Caroline Gurvich
- Monash Alfred Psychiatry Research Centre, Central Clinical School, Monash University and The Alfred Hospital, Melbourne, VIC 3004, Australia.
| | - Kate Hoy
- Monash Alfred Psychiatry Research Centre, Central Clinical School, Monash University and The Alfred Hospital, Melbourne, VIC 3004, Australia.
| | - Natalie Thomas
- Monash Alfred Psychiatry Research Centre, Central Clinical School, Monash University and The Alfred Hospital, Melbourne, VIC 3004, Australia.
| | - Jayashri Kulkarni
- Monash Alfred Psychiatry Research Centre, Central Clinical School, Monash University and The Alfred Hospital, Melbourne, VIC 3004, Australia.
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K Barha C, Liu-Ambrose T. Exercise and the Aging Brain: Considerations for Sex Differences. Brain Plast 2018. [DOI: 10.3233/bpl-1867] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Cindy K Barha
- Djavad Mowafaghian Centre for Brain Health, Vancouver, Canada
- Department of Physical Therapy, University of British Columbia, Vancouver, Canada
| | - Teresa Liu-Ambrose
- Djavad Mowafaghian Centre for Brain Health, Vancouver, Canada
- Department of Physical Therapy, University of British Columbia, Vancouver, Canada
- Centre for Hip Health and Mobility, Vancouver, Canada
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Jang H, Bae JB, Dardiotis E, Scarmeas N, Sachdev PS, Lipnicki DM, Han JW, Kim TH, Kwak KP, Kim BJ, Kim SG, Kim JL, Moon SW, Park JH, Ryu SH, Youn JC, Lee DY, Lee DW, Lee SB, Lee JJ, Jhoo JH, Yannakoulia M, Kosmidis MH, Hadjigeorgiou GM, Sakka P, Kim KW. Differential effects of completed and incomplete pregnancies on the risk of Alzheimer disease. Neurology 2018; 91:e643-e651. [PMID: 30021919 PMCID: PMC9811944 DOI: 10.1212/wnl.0000000000006000] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Accepted: 05/17/2018] [Indexed: 01/07/2023] Open
Abstract
OBJECTIVE To investigate the effects of completed pregnancy with childbirth and incomplete pregnancy without childbirth on the late-life cognition and the risk of Alzheimer disease (AD) in women. METHODS Using the pooled data of 3,549 women provided by 2 population-based cohort studies, we conducted logistic regression analyses to examine retrospectively the associations of completed and incomplete pregnancy with the risks of mild cognitive impairment and AD. For women without dementia, we also conducted analyses of covariance to examine the associations of completed and incomplete pregnancy with Mini-Mental State Examination (MMSE) score. RESULTS Grand multiparous women who experienced ≥5 completed pregnancies showed an ≈1.7-fold higher risk of AD than those who experienced 1 to 4 completed pregnancies (odds ratio [OR] 1.68, 95% confidence interval [CI] 1.04-2.72), while those who had incomplete pregnancies showed half the level of AD risk compared with those who never experienced an incomplete pregnancy (OR 0.43, 95% CI 0.24-0.76 for 1 incomplete pregnancy; OR 0.56, 95% CI 0.34-0.92 for ≥2 incomplete pregnancies). In women without dementia, the grand multiparous had worse MMSE scores than those with 1 to 4 completed pregnancies (p < 0.001), while those who experienced ≥1 incomplete pregnancies had better MMSE scores than those who never experienced an incomplete pregnancy (p = 0.008). CONCLUSIONS Grand multiparity was associated with high risk of AD, while incomplete pregnancy was associated with low risk of AD in late life.
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Affiliation(s)
- Hyesue Jang
- From the Department of Brain and Cognitive Sciences (H.J., K.W.K.), Seoul National University College of Natural Sciences; Department of Psychiatry (J.B.B., J.W.H., D.Y.L., K.W.K.), Seoul National University, College of Medicine; Department of Neuropsychiatry (J.B.B., J.W.H., K.W.K.), Seoul National University Bundang Hospital, Seongnam, South Korea; Department of Neurology (E.D.), Faculty of Medicine, University of Thessaly, Larissa; Department of Social Medicine, Psychiatry and Neurology (N.S.), National and Kapodistrian University of Athens, Greece; Department of Neurology (N.S.), Columbia University, New York, NY; Centre for Healthy Brain Ageing (P.S.S., D.M.L.) and Dementia Collaborative Research Centre (P.S.S.), University of New South Wales, Sydney, Australia; Department of Psychiatry (T.H.K.), Yonsei University Wonju Severance Christian Hospital; Department of Psychiatry (K.P.K.), Dongguk University Gyeongju Hospital; Department of Psychiatry (B.J.K.), Gyeongsang National University, School of Medicine, Jinju; Department of Neuropsychiatry (S.G.K.), Soonchunhyang University Bucheon Hospital; Department of Psychiatry (J.L.K.), School of Medicine, Chungnam National University, Daejeon; Department of Psychiatry (S.W.M.), School of Medicine, Konkuk University and Konkuk University Chungju Hospital; Department of Neuropsychiatry (J.H.P.), Jeju National University Hospital; Department of Psychiatry, School of Medicine (S.-H.R.), Konkuk University and Konkuk University Medical Center, Seoul; Department of Neuropsychiatry (J.C.Y.), Kyunggi Provincial Hospital for the Elderly, Yongin; Department of Neuropsychiatry (D.Y.L.), Seoul National University Hospital; Department of Neuropsychiatry (D.W.L.), Inje University Sanggye Paik Hospital, Seoul; Department of Psychiatry (S.B.L., J.J.L.), Dankook University Hospital, Cheonan; Department of Psychiatry (J.H.J.), Kangwon National University, School of Medicine, Chuncheon, South Korea; Department of Nutrition and Dietetics (M.Y.), Harokopio University, Athens; Laboratory of Cognitive Neuroscience (M.H.K.), School of Psychology, Aristotle University of Thessaloniki; School of Medicine (G.M.H.), University of Thessaly, Larissa; Athens Association of Alzheimer's Disease and Related Disorders (P.S.), Marousi, Greece; and Department of Neurology (G.M.H), Medical School, University of Cyprus, Nicosia, Cyprus
| | - Jong Bin Bae
- From the Department of Brain and Cognitive Sciences (H.J., K.W.K.), Seoul National University College of Natural Sciences; Department of Psychiatry (J.B.B., J.W.H., D.Y.L., K.W.K.), Seoul National University, College of Medicine; Department of Neuropsychiatry (J.B.B., J.W.H., K.W.K.), Seoul National University Bundang Hospital, Seongnam, South Korea; Department of Neurology (E.D.), Faculty of Medicine, University of Thessaly, Larissa; Department of Social Medicine, Psychiatry and Neurology (N.S.), National and Kapodistrian University of Athens, Greece; Department of Neurology (N.S.), Columbia University, New York, NY; Centre for Healthy Brain Ageing (P.S.S., D.M.L.) and Dementia Collaborative Research Centre (P.S.S.), University of New South Wales, Sydney, Australia; Department of Psychiatry (T.H.K.), Yonsei University Wonju Severance Christian Hospital; Department of Psychiatry (K.P.K.), Dongguk University Gyeongju Hospital; Department of Psychiatry (B.J.K.), Gyeongsang National University, School of Medicine, Jinju; Department of Neuropsychiatry (S.G.K.), Soonchunhyang University Bucheon Hospital; Department of Psychiatry (J.L.K.), School of Medicine, Chungnam National University, Daejeon; Department of Psychiatry (S.W.M.), School of Medicine, Konkuk University and Konkuk University Chungju Hospital; Department of Neuropsychiatry (J.H.P.), Jeju National University Hospital; Department of Psychiatry, School of Medicine (S.-H.R.), Konkuk University and Konkuk University Medical Center, Seoul; Department of Neuropsychiatry (J.C.Y.), Kyunggi Provincial Hospital for the Elderly, Yongin; Department of Neuropsychiatry (D.Y.L.), Seoul National University Hospital; Department of Neuropsychiatry (D.W.L.), Inje University Sanggye Paik Hospital, Seoul; Department of Psychiatry (S.B.L., J.J.L.), Dankook University Hospital, Cheonan; Department of Psychiatry (J.H.J.), Kangwon National University, School of Medicine, Chuncheon, South Korea; Department of Nutrition and Dietetics (M.Y.), Harokopio University, Athens; Laboratory of Cognitive Neuroscience (M.H.K.), School of Psychology, Aristotle University of Thessaloniki; School of Medicine (G.M.H.), University of Thessaly, Larissa; Athens Association of Alzheimer's Disease and Related Disorders (P.S.), Marousi, Greece; and Department of Neurology (G.M.H), Medical School, University of Cyprus, Nicosia, Cyprus
| | - Efthimios Dardiotis
- From the Department of Brain and Cognitive Sciences (H.J., K.W.K.), Seoul National University College of Natural Sciences; Department of Psychiatry (J.B.B., J.W.H., D.Y.L., K.W.K.), Seoul National University, College of Medicine; Department of Neuropsychiatry (J.B.B., J.W.H., K.W.K.), Seoul National University Bundang Hospital, Seongnam, South Korea; Department of Neurology (E.D.), Faculty of Medicine, University of Thessaly, Larissa; Department of Social Medicine, Psychiatry and Neurology (N.S.), National and Kapodistrian University of Athens, Greece; Department of Neurology (N.S.), Columbia University, New York, NY; Centre for Healthy Brain Ageing (P.S.S., D.M.L.) and Dementia Collaborative Research Centre (P.S.S.), University of New South Wales, Sydney, Australia; Department of Psychiatry (T.H.K.), Yonsei University Wonju Severance Christian Hospital; Department of Psychiatry (K.P.K.), Dongguk University Gyeongju Hospital; Department of Psychiatry (B.J.K.), Gyeongsang National University, School of Medicine, Jinju; Department of Neuropsychiatry (S.G.K.), Soonchunhyang University Bucheon Hospital; Department of Psychiatry (J.L.K.), School of Medicine, Chungnam National University, Daejeon; Department of Psychiatry (S.W.M.), School of Medicine, Konkuk University and Konkuk University Chungju Hospital; Department of Neuropsychiatry (J.H.P.), Jeju National University Hospital; Department of Psychiatry, School of Medicine (S.-H.R.), Konkuk University and Konkuk University Medical Center, Seoul; Department of Neuropsychiatry (J.C.Y.), Kyunggi Provincial Hospital for the Elderly, Yongin; Department of Neuropsychiatry (D.Y.L.), Seoul National University Hospital; Department of Neuropsychiatry (D.W.L.), Inje University Sanggye Paik Hospital, Seoul; Department of Psychiatry (S.B.L., J.J.L.), Dankook University Hospital, Cheonan; Department of Psychiatry (J.H.J.), Kangwon National University, School of Medicine, Chuncheon, South Korea; Department of Nutrition and Dietetics (M.Y.), Harokopio University, Athens; Laboratory of Cognitive Neuroscience (M.H.K.), School of Psychology, Aristotle University of Thessaloniki; School of Medicine (G.M.H.), University of Thessaly, Larissa; Athens Association of Alzheimer's Disease and Related Disorders (P.S.), Marousi, Greece; and Department of Neurology (G.M.H), Medical School, University of Cyprus, Nicosia, Cyprus
| | - Nikolaos Scarmeas
- From the Department of Brain and Cognitive Sciences (H.J., K.W.K.), Seoul National University College of Natural Sciences; Department of Psychiatry (J.B.B., J.W.H., D.Y.L., K.W.K.), Seoul National University, College of Medicine; Department of Neuropsychiatry (J.B.B., J.W.H., K.W.K.), Seoul National University Bundang Hospital, Seongnam, South Korea; Department of Neurology (E.D.), Faculty of Medicine, University of Thessaly, Larissa; Department of Social Medicine, Psychiatry and Neurology (N.S.), National and Kapodistrian University of Athens, Greece; Department of Neurology (N.S.), Columbia University, New York, NY; Centre for Healthy Brain Ageing (P.S.S., D.M.L.) and Dementia Collaborative Research Centre (P.S.S.), University of New South Wales, Sydney, Australia; Department of Psychiatry (T.H.K.), Yonsei University Wonju Severance Christian Hospital; Department of Psychiatry (K.P.K.), Dongguk University Gyeongju Hospital; Department of Psychiatry (B.J.K.), Gyeongsang National University, School of Medicine, Jinju; Department of Neuropsychiatry (S.G.K.), Soonchunhyang University Bucheon Hospital; Department of Psychiatry (J.L.K.), School of Medicine, Chungnam National University, Daejeon; Department of Psychiatry (S.W.M.), School of Medicine, Konkuk University and Konkuk University Chungju Hospital; Department of Neuropsychiatry (J.H.P.), Jeju National University Hospital; Department of Psychiatry, School of Medicine (S.-H.R.), Konkuk University and Konkuk University Medical Center, Seoul; Department of Neuropsychiatry (J.C.Y.), Kyunggi Provincial Hospital for the Elderly, Yongin; Department of Neuropsychiatry (D.Y.L.), Seoul National University Hospital; Department of Neuropsychiatry (D.W.L.), Inje University Sanggye Paik Hospital, Seoul; Department of Psychiatry (S.B.L., J.J.L.), Dankook University Hospital, Cheonan; Department of Psychiatry (J.H.J.), Kangwon National University, School of Medicine, Chuncheon, South Korea; Department of Nutrition and Dietetics (M.Y.), Harokopio University, Athens; Laboratory of Cognitive Neuroscience (M.H.K.), School of Psychology, Aristotle University of Thessaloniki; School of Medicine (G.M.H.), University of Thessaly, Larissa; Athens Association of Alzheimer's Disease and Related Disorders (P.S.), Marousi, Greece; and Department of Neurology (G.M.H), Medical School, University of Cyprus, Nicosia, Cyprus
| | - Perminder S Sachdev
- From the Department of Brain and Cognitive Sciences (H.J., K.W.K.), Seoul National University College of Natural Sciences; Department of Psychiatry (J.B.B., J.W.H., D.Y.L., K.W.K.), Seoul National University, College of Medicine; Department of Neuropsychiatry (J.B.B., J.W.H., K.W.K.), Seoul National University Bundang Hospital, Seongnam, South Korea; Department of Neurology (E.D.), Faculty of Medicine, University of Thessaly, Larissa; Department of Social Medicine, Psychiatry and Neurology (N.S.), National and Kapodistrian University of Athens, Greece; Department of Neurology (N.S.), Columbia University, New York, NY; Centre for Healthy Brain Ageing (P.S.S., D.M.L.) and Dementia Collaborative Research Centre (P.S.S.), University of New South Wales, Sydney, Australia; Department of Psychiatry (T.H.K.), Yonsei University Wonju Severance Christian Hospital; Department of Psychiatry (K.P.K.), Dongguk University Gyeongju Hospital; Department of Psychiatry (B.J.K.), Gyeongsang National University, School of Medicine, Jinju; Department of Neuropsychiatry (S.G.K.), Soonchunhyang University Bucheon Hospital; Department of Psychiatry (J.L.K.), School of Medicine, Chungnam National University, Daejeon; Department of Psychiatry (S.W.M.), School of Medicine, Konkuk University and Konkuk University Chungju Hospital; Department of Neuropsychiatry (J.H.P.), Jeju National University Hospital; Department of Psychiatry, School of Medicine (S.-H.R.), Konkuk University and Konkuk University Medical Center, Seoul; Department of Neuropsychiatry (J.C.Y.), Kyunggi Provincial Hospital for the Elderly, Yongin; Department of Neuropsychiatry (D.Y.L.), Seoul National University Hospital; Department of Neuropsychiatry (D.W.L.), Inje University Sanggye Paik Hospital, Seoul; Department of Psychiatry (S.B.L., J.J.L.), Dankook University Hospital, Cheonan; Department of Psychiatry (J.H.J.), Kangwon National University, School of Medicine, Chuncheon, South Korea; Department of Nutrition and Dietetics (M.Y.), Harokopio University, Athens; Laboratory of Cognitive Neuroscience (M.H.K.), School of Psychology, Aristotle University of Thessaloniki; School of Medicine (G.M.H.), University of Thessaly, Larissa; Athens Association of Alzheimer's Disease and Related Disorders (P.S.), Marousi, Greece; and Department of Neurology (G.M.H), Medical School, University of Cyprus, Nicosia, Cyprus
| | - Darren M Lipnicki
- From the Department of Brain and Cognitive Sciences (H.J., K.W.K.), Seoul National University College of Natural Sciences; Department of Psychiatry (J.B.B., J.W.H., D.Y.L., K.W.K.), Seoul National University, College of Medicine; Department of Neuropsychiatry (J.B.B., J.W.H., K.W.K.), Seoul National University Bundang Hospital, Seongnam, South Korea; Department of Neurology (E.D.), Faculty of Medicine, University of Thessaly, Larissa; Department of Social Medicine, Psychiatry and Neurology (N.S.), National and Kapodistrian University of Athens, Greece; Department of Neurology (N.S.), Columbia University, New York, NY; Centre for Healthy Brain Ageing (P.S.S., D.M.L.) and Dementia Collaborative Research Centre (P.S.S.), University of New South Wales, Sydney, Australia; Department of Psychiatry (T.H.K.), Yonsei University Wonju Severance Christian Hospital; Department of Psychiatry (K.P.K.), Dongguk University Gyeongju Hospital; Department of Psychiatry (B.J.K.), Gyeongsang National University, School of Medicine, Jinju; Department of Neuropsychiatry (S.G.K.), Soonchunhyang University Bucheon Hospital; Department of Psychiatry (J.L.K.), School of Medicine, Chungnam National University, Daejeon; Department of Psychiatry (S.W.M.), School of Medicine, Konkuk University and Konkuk University Chungju Hospital; Department of Neuropsychiatry (J.H.P.), Jeju National University Hospital; Department of Psychiatry, School of Medicine (S.-H.R.), Konkuk University and Konkuk University Medical Center, Seoul; Department of Neuropsychiatry (J.C.Y.), Kyunggi Provincial Hospital for the Elderly, Yongin; Department of Neuropsychiatry (D.Y.L.), Seoul National University Hospital; Department of Neuropsychiatry (D.W.L.), Inje University Sanggye Paik Hospital, Seoul; Department of Psychiatry (S.B.L., J.J.L.), Dankook University Hospital, Cheonan; Department of Psychiatry (J.H.J.), Kangwon National University, School of Medicine, Chuncheon, South Korea; Department of Nutrition and Dietetics (M.Y.), Harokopio University, Athens; Laboratory of Cognitive Neuroscience (M.H.K.), School of Psychology, Aristotle University of Thessaloniki; School of Medicine (G.M.H.), University of Thessaly, Larissa; Athens Association of Alzheimer's Disease and Related Disorders (P.S.), Marousi, Greece; and Department of Neurology (G.M.H), Medical School, University of Cyprus, Nicosia, Cyprus
| | - Ji Won Han
- From the Department of Brain and Cognitive Sciences (H.J., K.W.K.), Seoul National University College of Natural Sciences; Department of Psychiatry (J.B.B., J.W.H., D.Y.L., K.W.K.), Seoul National University, College of Medicine; Department of Neuropsychiatry (J.B.B., J.W.H., K.W.K.), Seoul National University Bundang Hospital, Seongnam, South Korea; Department of Neurology (E.D.), Faculty of Medicine, University of Thessaly, Larissa; Department of Social Medicine, Psychiatry and Neurology (N.S.), National and Kapodistrian University of Athens, Greece; Department of Neurology (N.S.), Columbia University, New York, NY; Centre for Healthy Brain Ageing (P.S.S., D.M.L.) and Dementia Collaborative Research Centre (P.S.S.), University of New South Wales, Sydney, Australia; Department of Psychiatry (T.H.K.), Yonsei University Wonju Severance Christian Hospital; Department of Psychiatry (K.P.K.), Dongguk University Gyeongju Hospital; Department of Psychiatry (B.J.K.), Gyeongsang National University, School of Medicine, Jinju; Department of Neuropsychiatry (S.G.K.), Soonchunhyang University Bucheon Hospital; Department of Psychiatry (J.L.K.), School of Medicine, Chungnam National University, Daejeon; Department of Psychiatry (S.W.M.), School of Medicine, Konkuk University and Konkuk University Chungju Hospital; Department of Neuropsychiatry (J.H.P.), Jeju National University Hospital; Department of Psychiatry, School of Medicine (S.-H.R.), Konkuk University and Konkuk University Medical Center, Seoul; Department of Neuropsychiatry (J.C.Y.), Kyunggi Provincial Hospital for the Elderly, Yongin; Department of Neuropsychiatry (D.Y.L.), Seoul National University Hospital; Department of Neuropsychiatry (D.W.L.), Inje University Sanggye Paik Hospital, Seoul; Department of Psychiatry (S.B.L., J.J.L.), Dankook University Hospital, Cheonan; Department of Psychiatry (J.H.J.), Kangwon National University, School of Medicine, Chuncheon, South Korea; Department of Nutrition and Dietetics (M.Y.), Harokopio University, Athens; Laboratory of Cognitive Neuroscience (M.H.K.), School of Psychology, Aristotle University of Thessaloniki; School of Medicine (G.M.H.), University of Thessaly, Larissa; Athens Association of Alzheimer's Disease and Related Disorders (P.S.), Marousi, Greece; and Department of Neurology (G.M.H), Medical School, University of Cyprus, Nicosia, Cyprus
| | - Tae Hui Kim
- From the Department of Brain and Cognitive Sciences (H.J., K.W.K.), Seoul National University College of Natural Sciences; Department of Psychiatry (J.B.B., J.W.H., D.Y.L., K.W.K.), Seoul National University, College of Medicine; Department of Neuropsychiatry (J.B.B., J.W.H., K.W.K.), Seoul National University Bundang Hospital, Seongnam, South Korea; Department of Neurology (E.D.), Faculty of Medicine, University of Thessaly, Larissa; Department of Social Medicine, Psychiatry and Neurology (N.S.), National and Kapodistrian University of Athens, Greece; Department of Neurology (N.S.), Columbia University, New York, NY; Centre for Healthy Brain Ageing (P.S.S., D.M.L.) and Dementia Collaborative Research Centre (P.S.S.), University of New South Wales, Sydney, Australia; Department of Psychiatry (T.H.K.), Yonsei University Wonju Severance Christian Hospital; Department of Psychiatry (K.P.K.), Dongguk University Gyeongju Hospital; Department of Psychiatry (B.J.K.), Gyeongsang National University, School of Medicine, Jinju; Department of Neuropsychiatry (S.G.K.), Soonchunhyang University Bucheon Hospital; Department of Psychiatry (J.L.K.), School of Medicine, Chungnam National University, Daejeon; Department of Psychiatry (S.W.M.), School of Medicine, Konkuk University and Konkuk University Chungju Hospital; Department of Neuropsychiatry (J.H.P.), Jeju National University Hospital; Department of Psychiatry, School of Medicine (S.-H.R.), Konkuk University and Konkuk University Medical Center, Seoul; Department of Neuropsychiatry (J.C.Y.), Kyunggi Provincial Hospital for the Elderly, Yongin; Department of Neuropsychiatry (D.Y.L.), Seoul National University Hospital; Department of Neuropsychiatry (D.W.L.), Inje University Sanggye Paik Hospital, Seoul; Department of Psychiatry (S.B.L., J.J.L.), Dankook University Hospital, Cheonan; Department of Psychiatry (J.H.J.), Kangwon National University, School of Medicine, Chuncheon, South Korea; Department of Nutrition and Dietetics (M.Y.), Harokopio University, Athens; Laboratory of Cognitive Neuroscience (M.H.K.), School of Psychology, Aristotle University of Thessaloniki; School of Medicine (G.M.H.), University of Thessaly, Larissa; Athens Association of Alzheimer's Disease and Related Disorders (P.S.), Marousi, Greece; and Department of Neurology (G.M.H), Medical School, University of Cyprus, Nicosia, Cyprus
| | - Kyung Phil Kwak
- From the Department of Brain and Cognitive Sciences (H.J., K.W.K.), Seoul National University College of Natural Sciences; Department of Psychiatry (J.B.B., J.W.H., D.Y.L., K.W.K.), Seoul National University, College of Medicine; Department of Neuropsychiatry (J.B.B., J.W.H., K.W.K.), Seoul National University Bundang Hospital, Seongnam, South Korea; Department of Neurology (E.D.), Faculty of Medicine, University of Thessaly, Larissa; Department of Social Medicine, Psychiatry and Neurology (N.S.), National and Kapodistrian University of Athens, Greece; Department of Neurology (N.S.), Columbia University, New York, NY; Centre for Healthy Brain Ageing (P.S.S., D.M.L.) and Dementia Collaborative Research Centre (P.S.S.), University of New South Wales, Sydney, Australia; Department of Psychiatry (T.H.K.), Yonsei University Wonju Severance Christian Hospital; Department of Psychiatry (K.P.K.), Dongguk University Gyeongju Hospital; Department of Psychiatry (B.J.K.), Gyeongsang National University, School of Medicine, Jinju; Department of Neuropsychiatry (S.G.K.), Soonchunhyang University Bucheon Hospital; Department of Psychiatry (J.L.K.), School of Medicine, Chungnam National University, Daejeon; Department of Psychiatry (S.W.M.), School of Medicine, Konkuk University and Konkuk University Chungju Hospital; Department of Neuropsychiatry (J.H.P.), Jeju National University Hospital; Department of Psychiatry, School of Medicine (S.-H.R.), Konkuk University and Konkuk University Medical Center, Seoul; Department of Neuropsychiatry (J.C.Y.), Kyunggi Provincial Hospital for the Elderly, Yongin; Department of Neuropsychiatry (D.Y.L.), Seoul National University Hospital; Department of Neuropsychiatry (D.W.L.), Inje University Sanggye Paik Hospital, Seoul; Department of Psychiatry (S.B.L., J.J.L.), Dankook University Hospital, Cheonan; Department of Psychiatry (J.H.J.), Kangwon National University, School of Medicine, Chuncheon, South Korea; Department of Nutrition and Dietetics (M.Y.), Harokopio University, Athens; Laboratory of Cognitive Neuroscience (M.H.K.), School of Psychology, Aristotle University of Thessaloniki; School of Medicine (G.M.H.), University of Thessaly, Larissa; Athens Association of Alzheimer's Disease and Related Disorders (P.S.), Marousi, Greece; and Department of Neurology (G.M.H), Medical School, University of Cyprus, Nicosia, Cyprus
| | - Bong Jo Kim
- From the Department of Brain and Cognitive Sciences (H.J., K.W.K.), Seoul National University College of Natural Sciences; Department of Psychiatry (J.B.B., J.W.H., D.Y.L., K.W.K.), Seoul National University, College of Medicine; Department of Neuropsychiatry (J.B.B., J.W.H., K.W.K.), Seoul National University Bundang Hospital, Seongnam, South Korea; Department of Neurology (E.D.), Faculty of Medicine, University of Thessaly, Larissa; Department of Social Medicine, Psychiatry and Neurology (N.S.), National and Kapodistrian University of Athens, Greece; Department of Neurology (N.S.), Columbia University, New York, NY; Centre for Healthy Brain Ageing (P.S.S., D.M.L.) and Dementia Collaborative Research Centre (P.S.S.), University of New South Wales, Sydney, Australia; Department of Psychiatry (T.H.K.), Yonsei University Wonju Severance Christian Hospital; Department of Psychiatry (K.P.K.), Dongguk University Gyeongju Hospital; Department of Psychiatry (B.J.K.), Gyeongsang National University, School of Medicine, Jinju; Department of Neuropsychiatry (S.G.K.), Soonchunhyang University Bucheon Hospital; Department of Psychiatry (J.L.K.), School of Medicine, Chungnam National University, Daejeon; Department of Psychiatry (S.W.M.), School of Medicine, Konkuk University and Konkuk University Chungju Hospital; Department of Neuropsychiatry (J.H.P.), Jeju National University Hospital; Department of Psychiatry, School of Medicine (S.-H.R.), Konkuk University and Konkuk University Medical Center, Seoul; Department of Neuropsychiatry (J.C.Y.), Kyunggi Provincial Hospital for the Elderly, Yongin; Department of Neuropsychiatry (D.Y.L.), Seoul National University Hospital; Department of Neuropsychiatry (D.W.L.), Inje University Sanggye Paik Hospital, Seoul; Department of Psychiatry (S.B.L., J.J.L.), Dankook University Hospital, Cheonan; Department of Psychiatry (J.H.J.), Kangwon National University, School of Medicine, Chuncheon, South Korea; Department of Nutrition and Dietetics (M.Y.), Harokopio University, Athens; Laboratory of Cognitive Neuroscience (M.H.K.), School of Psychology, Aristotle University of Thessaloniki; School of Medicine (G.M.H.), University of Thessaly, Larissa; Athens Association of Alzheimer's Disease and Related Disorders (P.S.), Marousi, Greece; and Department of Neurology (G.M.H), Medical School, University of Cyprus, Nicosia, Cyprus
| | - Shin Gyeom Kim
- From the Department of Brain and Cognitive Sciences (H.J., K.W.K.), Seoul National University College of Natural Sciences; Department of Psychiatry (J.B.B., J.W.H., D.Y.L., K.W.K.), Seoul National University, College of Medicine; Department of Neuropsychiatry (J.B.B., J.W.H., K.W.K.), Seoul National University Bundang Hospital, Seongnam, South Korea; Department of Neurology (E.D.), Faculty of Medicine, University of Thessaly, Larissa; Department of Social Medicine, Psychiatry and Neurology (N.S.), National and Kapodistrian University of Athens, Greece; Department of Neurology (N.S.), Columbia University, New York, NY; Centre for Healthy Brain Ageing (P.S.S., D.M.L.) and Dementia Collaborative Research Centre (P.S.S.), University of New South Wales, Sydney, Australia; Department of Psychiatry (T.H.K.), Yonsei University Wonju Severance Christian Hospital; Department of Psychiatry (K.P.K.), Dongguk University Gyeongju Hospital; Department of Psychiatry (B.J.K.), Gyeongsang National University, School of Medicine, Jinju; Department of Neuropsychiatry (S.G.K.), Soonchunhyang University Bucheon Hospital; Department of Psychiatry (J.L.K.), School of Medicine, Chungnam National University, Daejeon; Department of Psychiatry (S.W.M.), School of Medicine, Konkuk University and Konkuk University Chungju Hospital; Department of Neuropsychiatry (J.H.P.), Jeju National University Hospital; Department of Psychiatry, School of Medicine (S.-H.R.), Konkuk University and Konkuk University Medical Center, Seoul; Department of Neuropsychiatry (J.C.Y.), Kyunggi Provincial Hospital for the Elderly, Yongin; Department of Neuropsychiatry (D.Y.L.), Seoul National University Hospital; Department of Neuropsychiatry (D.W.L.), Inje University Sanggye Paik Hospital, Seoul; Department of Psychiatry (S.B.L., J.J.L.), Dankook University Hospital, Cheonan; Department of Psychiatry (J.H.J.), Kangwon National University, School of Medicine, Chuncheon, South Korea; Department of Nutrition and Dietetics (M.Y.), Harokopio University, Athens; Laboratory of Cognitive Neuroscience (M.H.K.), School of Psychology, Aristotle University of Thessaloniki; School of Medicine (G.M.H.), University of Thessaly, Larissa; Athens Association of Alzheimer's Disease and Related Disorders (P.S.), Marousi, Greece; and Department of Neurology (G.M.H), Medical School, University of Cyprus, Nicosia, Cyprus
| | - Jeong Lan Kim
- From the Department of Brain and Cognitive Sciences (H.J., K.W.K.), Seoul National University College of Natural Sciences; Department of Psychiatry (J.B.B., J.W.H., D.Y.L., K.W.K.), Seoul National University, College of Medicine; Department of Neuropsychiatry (J.B.B., J.W.H., K.W.K.), Seoul National University Bundang Hospital, Seongnam, South Korea; Department of Neurology (E.D.), Faculty of Medicine, University of Thessaly, Larissa; Department of Social Medicine, Psychiatry and Neurology (N.S.), National and Kapodistrian University of Athens, Greece; Department of Neurology (N.S.), Columbia University, New York, NY; Centre for Healthy Brain Ageing (P.S.S., D.M.L.) and Dementia Collaborative Research Centre (P.S.S.), University of New South Wales, Sydney, Australia; Department of Psychiatry (T.H.K.), Yonsei University Wonju Severance Christian Hospital; Department of Psychiatry (K.P.K.), Dongguk University Gyeongju Hospital; Department of Psychiatry (B.J.K.), Gyeongsang National University, School of Medicine, Jinju; Department of Neuropsychiatry (S.G.K.), Soonchunhyang University Bucheon Hospital; Department of Psychiatry (J.L.K.), School of Medicine, Chungnam National University, Daejeon; Department of Psychiatry (S.W.M.), School of Medicine, Konkuk University and Konkuk University Chungju Hospital; Department of Neuropsychiatry (J.H.P.), Jeju National University Hospital; Department of Psychiatry, School of Medicine (S.-H.R.), Konkuk University and Konkuk University Medical Center, Seoul; Department of Neuropsychiatry (J.C.Y.), Kyunggi Provincial Hospital for the Elderly, Yongin; Department of Neuropsychiatry (D.Y.L.), Seoul National University Hospital; Department of Neuropsychiatry (D.W.L.), Inje University Sanggye Paik Hospital, Seoul; Department of Psychiatry (S.B.L., J.J.L.), Dankook University Hospital, Cheonan; Department of Psychiatry (J.H.J.), Kangwon National University, School of Medicine, Chuncheon, South Korea; Department of Nutrition and Dietetics (M.Y.), Harokopio University, Athens; Laboratory of Cognitive Neuroscience (M.H.K.), School of Psychology, Aristotle University of Thessaloniki; School of Medicine (G.M.H.), University of Thessaly, Larissa; Athens Association of Alzheimer's Disease and Related Disorders (P.S.), Marousi, Greece; and Department of Neurology (G.M.H), Medical School, University of Cyprus, Nicosia, Cyprus
| | - Seok Woo Moon
- From the Department of Brain and Cognitive Sciences (H.J., K.W.K.), Seoul National University College of Natural Sciences; Department of Psychiatry (J.B.B., J.W.H., D.Y.L., K.W.K.), Seoul National University, College of Medicine; Department of Neuropsychiatry (J.B.B., J.W.H., K.W.K.), Seoul National University Bundang Hospital, Seongnam, South Korea; Department of Neurology (E.D.), Faculty of Medicine, University of Thessaly, Larissa; Department of Social Medicine, Psychiatry and Neurology (N.S.), National and Kapodistrian University of Athens, Greece; Department of Neurology (N.S.), Columbia University, New York, NY; Centre for Healthy Brain Ageing (P.S.S., D.M.L.) and Dementia Collaborative Research Centre (P.S.S.), University of New South Wales, Sydney, Australia; Department of Psychiatry (T.H.K.), Yonsei University Wonju Severance Christian Hospital; Department of Psychiatry (K.P.K.), Dongguk University Gyeongju Hospital; Department of Psychiatry (B.J.K.), Gyeongsang National University, School of Medicine, Jinju; Department of Neuropsychiatry (S.G.K.), Soonchunhyang University Bucheon Hospital; Department of Psychiatry (J.L.K.), School of Medicine, Chungnam National University, Daejeon; Department of Psychiatry (S.W.M.), School of Medicine, Konkuk University and Konkuk University Chungju Hospital; Department of Neuropsychiatry (J.H.P.), Jeju National University Hospital; Department of Psychiatry, School of Medicine (S.-H.R.), Konkuk University and Konkuk University Medical Center, Seoul; Department of Neuropsychiatry (J.C.Y.), Kyunggi Provincial Hospital for the Elderly, Yongin; Department of Neuropsychiatry (D.Y.L.), Seoul National University Hospital; Department of Neuropsychiatry (D.W.L.), Inje University Sanggye Paik Hospital, Seoul; Department of Psychiatry (S.B.L., J.J.L.), Dankook University Hospital, Cheonan; Department of Psychiatry (J.H.J.), Kangwon National University, School of Medicine, Chuncheon, South Korea; Department of Nutrition and Dietetics (M.Y.), Harokopio University, Athens; Laboratory of Cognitive Neuroscience (M.H.K.), School of Psychology, Aristotle University of Thessaloniki; School of Medicine (G.M.H.), University of Thessaly, Larissa; Athens Association of Alzheimer's Disease and Related Disorders (P.S.), Marousi, Greece; and Department of Neurology (G.M.H), Medical School, University of Cyprus, Nicosia, Cyprus
| | - Joon Hyuk Park
- From the Department of Brain and Cognitive Sciences (H.J., K.W.K.), Seoul National University College of Natural Sciences; Department of Psychiatry (J.B.B., J.W.H., D.Y.L., K.W.K.), Seoul National University, College of Medicine; Department of Neuropsychiatry (J.B.B., J.W.H., K.W.K.), Seoul National University Bundang Hospital, Seongnam, South Korea; Department of Neurology (E.D.), Faculty of Medicine, University of Thessaly, Larissa; Department of Social Medicine, Psychiatry and Neurology (N.S.), National and Kapodistrian University of Athens, Greece; Department of Neurology (N.S.), Columbia University, New York, NY; Centre for Healthy Brain Ageing (P.S.S., D.M.L.) and Dementia Collaborative Research Centre (P.S.S.), University of New South Wales, Sydney, Australia; Department of Psychiatry (T.H.K.), Yonsei University Wonju Severance Christian Hospital; Department of Psychiatry (K.P.K.), Dongguk University Gyeongju Hospital; Department of Psychiatry (B.J.K.), Gyeongsang National University, School of Medicine, Jinju; Department of Neuropsychiatry (S.G.K.), Soonchunhyang University Bucheon Hospital; Department of Psychiatry (J.L.K.), School of Medicine, Chungnam National University, Daejeon; Department of Psychiatry (S.W.M.), School of Medicine, Konkuk University and Konkuk University Chungju Hospital; Department of Neuropsychiatry (J.H.P.), Jeju National University Hospital; Department of Psychiatry, School of Medicine (S.-H.R.), Konkuk University and Konkuk University Medical Center, Seoul; Department of Neuropsychiatry (J.C.Y.), Kyunggi Provincial Hospital for the Elderly, Yongin; Department of Neuropsychiatry (D.Y.L.), Seoul National University Hospital; Department of Neuropsychiatry (D.W.L.), Inje University Sanggye Paik Hospital, Seoul; Department of Psychiatry (S.B.L., J.J.L.), Dankook University Hospital, Cheonan; Department of Psychiatry (J.H.J.), Kangwon National University, School of Medicine, Chuncheon, South Korea; Department of Nutrition and Dietetics (M.Y.), Harokopio University, Athens; Laboratory of Cognitive Neuroscience (M.H.K.), School of Psychology, Aristotle University of Thessaloniki; School of Medicine (G.M.H.), University of Thessaly, Larissa; Athens Association of Alzheimer's Disease and Related Disorders (P.S.), Marousi, Greece; and Department of Neurology (G.M.H), Medical School, University of Cyprus, Nicosia, Cyprus
| | - Seung-Ho Ryu
- From the Department of Brain and Cognitive Sciences (H.J., K.W.K.), Seoul National University College of Natural Sciences; Department of Psychiatry (J.B.B., J.W.H., D.Y.L., K.W.K.), Seoul National University, College of Medicine; Department of Neuropsychiatry (J.B.B., J.W.H., K.W.K.), Seoul National University Bundang Hospital, Seongnam, South Korea; Department of Neurology (E.D.), Faculty of Medicine, University of Thessaly, Larissa; Department of Social Medicine, Psychiatry and Neurology (N.S.), National and Kapodistrian University of Athens, Greece; Department of Neurology (N.S.), Columbia University, New York, NY; Centre for Healthy Brain Ageing (P.S.S., D.M.L.) and Dementia Collaborative Research Centre (P.S.S.), University of New South Wales, Sydney, Australia; Department of Psychiatry (T.H.K.), Yonsei University Wonju Severance Christian Hospital; Department of Psychiatry (K.P.K.), Dongguk University Gyeongju Hospital; Department of Psychiatry (B.J.K.), Gyeongsang National University, School of Medicine, Jinju; Department of Neuropsychiatry (S.G.K.), Soonchunhyang University Bucheon Hospital; Department of Psychiatry (J.L.K.), School of Medicine, Chungnam National University, Daejeon; Department of Psychiatry (S.W.M.), School of Medicine, Konkuk University and Konkuk University Chungju Hospital; Department of Neuropsychiatry (J.H.P.), Jeju National University Hospital; Department of Psychiatry, School of Medicine (S.-H.R.), Konkuk University and Konkuk University Medical Center, Seoul; Department of Neuropsychiatry (J.C.Y.), Kyunggi Provincial Hospital for the Elderly, Yongin; Department of Neuropsychiatry (D.Y.L.), Seoul National University Hospital; Department of Neuropsychiatry (D.W.L.), Inje University Sanggye Paik Hospital, Seoul; Department of Psychiatry (S.B.L., J.J.L.), Dankook University Hospital, Cheonan; Department of Psychiatry (J.H.J.), Kangwon National University, School of Medicine, Chuncheon, South Korea; Department of Nutrition and Dietetics (M.Y.), Harokopio University, Athens; Laboratory of Cognitive Neuroscience (M.H.K.), School of Psychology, Aristotle University of Thessaloniki; School of Medicine (G.M.H.), University of Thessaly, Larissa; Athens Association of Alzheimer's Disease and Related Disorders (P.S.), Marousi, Greece; and Department of Neurology (G.M.H), Medical School, University of Cyprus, Nicosia, Cyprus
| | - Jong Chul Youn
- From the Department of Brain and Cognitive Sciences (H.J., K.W.K.), Seoul National University College of Natural Sciences; Department of Psychiatry (J.B.B., J.W.H., D.Y.L., K.W.K.), Seoul National University, College of Medicine; Department of Neuropsychiatry (J.B.B., J.W.H., K.W.K.), Seoul National University Bundang Hospital, Seongnam, South Korea; Department of Neurology (E.D.), Faculty of Medicine, University of Thessaly, Larissa; Department of Social Medicine, Psychiatry and Neurology (N.S.), National and Kapodistrian University of Athens, Greece; Department of Neurology (N.S.), Columbia University, New York, NY; Centre for Healthy Brain Ageing (P.S.S., D.M.L.) and Dementia Collaborative Research Centre (P.S.S.), University of New South Wales, Sydney, Australia; Department of Psychiatry (T.H.K.), Yonsei University Wonju Severance Christian Hospital; Department of Psychiatry (K.P.K.), Dongguk University Gyeongju Hospital; Department of Psychiatry (B.J.K.), Gyeongsang National University, School of Medicine, Jinju; Department of Neuropsychiatry (S.G.K.), Soonchunhyang University Bucheon Hospital; Department of Psychiatry (J.L.K.), School of Medicine, Chungnam National University, Daejeon; Department of Psychiatry (S.W.M.), School of Medicine, Konkuk University and Konkuk University Chungju Hospital; Department of Neuropsychiatry (J.H.P.), Jeju National University Hospital; Department of Psychiatry, School of Medicine (S.-H.R.), Konkuk University and Konkuk University Medical Center, Seoul; Department of Neuropsychiatry (J.C.Y.), Kyunggi Provincial Hospital for the Elderly, Yongin; Department of Neuropsychiatry (D.Y.L.), Seoul National University Hospital; Department of Neuropsychiatry (D.W.L.), Inje University Sanggye Paik Hospital, Seoul; Department of Psychiatry (S.B.L., J.J.L.), Dankook University Hospital, Cheonan; Department of Psychiatry (J.H.J.), Kangwon National University, School of Medicine, Chuncheon, South Korea; Department of Nutrition and Dietetics (M.Y.), Harokopio University, Athens; Laboratory of Cognitive Neuroscience (M.H.K.), School of Psychology, Aristotle University of Thessaloniki; School of Medicine (G.M.H.), University of Thessaly, Larissa; Athens Association of Alzheimer's Disease and Related Disorders (P.S.), Marousi, Greece; and Department of Neurology (G.M.H), Medical School, University of Cyprus, Nicosia, Cyprus
| | - Dong Young Lee
- From the Department of Brain and Cognitive Sciences (H.J., K.W.K.), Seoul National University College of Natural Sciences; Department of Psychiatry (J.B.B., J.W.H., D.Y.L., K.W.K.), Seoul National University, College of Medicine; Department of Neuropsychiatry (J.B.B., J.W.H., K.W.K.), Seoul National University Bundang Hospital, Seongnam, South Korea; Department of Neurology (E.D.), Faculty of Medicine, University of Thessaly, Larissa; Department of Social Medicine, Psychiatry and Neurology (N.S.), National and Kapodistrian University of Athens, Greece; Department of Neurology (N.S.), Columbia University, New York, NY; Centre for Healthy Brain Ageing (P.S.S., D.M.L.) and Dementia Collaborative Research Centre (P.S.S.), University of New South Wales, Sydney, Australia; Department of Psychiatry (T.H.K.), Yonsei University Wonju Severance Christian Hospital; Department of Psychiatry (K.P.K.), Dongguk University Gyeongju Hospital; Department of Psychiatry (B.J.K.), Gyeongsang National University, School of Medicine, Jinju; Department of Neuropsychiatry (S.G.K.), Soonchunhyang University Bucheon Hospital; Department of Psychiatry (J.L.K.), School of Medicine, Chungnam National University, Daejeon; Department of Psychiatry (S.W.M.), School of Medicine, Konkuk University and Konkuk University Chungju Hospital; Department of Neuropsychiatry (J.H.P.), Jeju National University Hospital; Department of Psychiatry, School of Medicine (S.-H.R.), Konkuk University and Konkuk University Medical Center, Seoul; Department of Neuropsychiatry (J.C.Y.), Kyunggi Provincial Hospital for the Elderly, Yongin; Department of Neuropsychiatry (D.Y.L.), Seoul National University Hospital; Department of Neuropsychiatry (D.W.L.), Inje University Sanggye Paik Hospital, Seoul; Department of Psychiatry (S.B.L., J.J.L.), Dankook University Hospital, Cheonan; Department of Psychiatry (J.H.J.), Kangwon National University, School of Medicine, Chuncheon, South Korea; Department of Nutrition and Dietetics (M.Y.), Harokopio University, Athens; Laboratory of Cognitive Neuroscience (M.H.K.), School of Psychology, Aristotle University of Thessaloniki; School of Medicine (G.M.H.), University of Thessaly, Larissa; Athens Association of Alzheimer's Disease and Related Disorders (P.S.), Marousi, Greece; and Department of Neurology (G.M.H), Medical School, University of Cyprus, Nicosia, Cyprus
| | - Dong Woo Lee
- From the Department of Brain and Cognitive Sciences (H.J., K.W.K.), Seoul National University College of Natural Sciences; Department of Psychiatry (J.B.B., J.W.H., D.Y.L., K.W.K.), Seoul National University, College of Medicine; Department of Neuropsychiatry (J.B.B., J.W.H., K.W.K.), Seoul National University Bundang Hospital, Seongnam, South Korea; Department of Neurology (E.D.), Faculty of Medicine, University of Thessaly, Larissa; Department of Social Medicine, Psychiatry and Neurology (N.S.), National and Kapodistrian University of Athens, Greece; Department of Neurology (N.S.), Columbia University, New York, NY; Centre for Healthy Brain Ageing (P.S.S., D.M.L.) and Dementia Collaborative Research Centre (P.S.S.), University of New South Wales, Sydney, Australia; Department of Psychiatry (T.H.K.), Yonsei University Wonju Severance Christian Hospital; Department of Psychiatry (K.P.K.), Dongguk University Gyeongju Hospital; Department of Psychiatry (B.J.K.), Gyeongsang National University, School of Medicine, Jinju; Department of Neuropsychiatry (S.G.K.), Soonchunhyang University Bucheon Hospital; Department of Psychiatry (J.L.K.), School of Medicine, Chungnam National University, Daejeon; Department of Psychiatry (S.W.M.), School of Medicine, Konkuk University and Konkuk University Chungju Hospital; Department of Neuropsychiatry (J.H.P.), Jeju National University Hospital; Department of Psychiatry, School of Medicine (S.-H.R.), Konkuk University and Konkuk University Medical Center, Seoul; Department of Neuropsychiatry (J.C.Y.), Kyunggi Provincial Hospital for the Elderly, Yongin; Department of Neuropsychiatry (D.Y.L.), Seoul National University Hospital; Department of Neuropsychiatry (D.W.L.), Inje University Sanggye Paik Hospital, Seoul; Department of Psychiatry (S.B.L., J.J.L.), Dankook University Hospital, Cheonan; Department of Psychiatry (J.H.J.), Kangwon National University, School of Medicine, Chuncheon, South Korea; Department of Nutrition and Dietetics (M.Y.), Harokopio University, Athens; Laboratory of Cognitive Neuroscience (M.H.K.), School of Psychology, Aristotle University of Thessaloniki; School of Medicine (G.M.H.), University of Thessaly, Larissa; Athens Association of Alzheimer's Disease and Related Disorders (P.S.), Marousi, Greece; and Department of Neurology (G.M.H), Medical School, University of Cyprus, Nicosia, Cyprus
| | - Seok Bum Lee
- From the Department of Brain and Cognitive Sciences (H.J., K.W.K.), Seoul National University College of Natural Sciences; Department of Psychiatry (J.B.B., J.W.H., D.Y.L., K.W.K.), Seoul National University, College of Medicine; Department of Neuropsychiatry (J.B.B., J.W.H., K.W.K.), Seoul National University Bundang Hospital, Seongnam, South Korea; Department of Neurology (E.D.), Faculty of Medicine, University of Thessaly, Larissa; Department of Social Medicine, Psychiatry and Neurology (N.S.), National and Kapodistrian University of Athens, Greece; Department of Neurology (N.S.), Columbia University, New York, NY; Centre for Healthy Brain Ageing (P.S.S., D.M.L.) and Dementia Collaborative Research Centre (P.S.S.), University of New South Wales, Sydney, Australia; Department of Psychiatry (T.H.K.), Yonsei University Wonju Severance Christian Hospital; Department of Psychiatry (K.P.K.), Dongguk University Gyeongju Hospital; Department of Psychiatry (B.J.K.), Gyeongsang National University, School of Medicine, Jinju; Department of Neuropsychiatry (S.G.K.), Soonchunhyang University Bucheon Hospital; Department of Psychiatry (J.L.K.), School of Medicine, Chungnam National University, Daejeon; Department of Psychiatry (S.W.M.), School of Medicine, Konkuk University and Konkuk University Chungju Hospital; Department of Neuropsychiatry (J.H.P.), Jeju National University Hospital; Department of Psychiatry, School of Medicine (S.-H.R.), Konkuk University and Konkuk University Medical Center, Seoul; Department of Neuropsychiatry (J.C.Y.), Kyunggi Provincial Hospital for the Elderly, Yongin; Department of Neuropsychiatry (D.Y.L.), Seoul National University Hospital; Department of Neuropsychiatry (D.W.L.), Inje University Sanggye Paik Hospital, Seoul; Department of Psychiatry (S.B.L., J.J.L.), Dankook University Hospital, Cheonan; Department of Psychiatry (J.H.J.), Kangwon National University, School of Medicine, Chuncheon, South Korea; Department of Nutrition and Dietetics (M.Y.), Harokopio University, Athens; Laboratory of Cognitive Neuroscience (M.H.K.), School of Psychology, Aristotle University of Thessaloniki; School of Medicine (G.M.H.), University of Thessaly, Larissa; Athens Association of Alzheimer's Disease and Related Disorders (P.S.), Marousi, Greece; and Department of Neurology (G.M.H), Medical School, University of Cyprus, Nicosia, Cyprus
| | - Jung Jae Lee
- From the Department of Brain and Cognitive Sciences (H.J., K.W.K.), Seoul National University College of Natural Sciences; Department of Psychiatry (J.B.B., J.W.H., D.Y.L., K.W.K.), Seoul National University, College of Medicine; Department of Neuropsychiatry (J.B.B., J.W.H., K.W.K.), Seoul National University Bundang Hospital, Seongnam, South Korea; Department of Neurology (E.D.), Faculty of Medicine, University of Thessaly, Larissa; Department of Social Medicine, Psychiatry and Neurology (N.S.), National and Kapodistrian University of Athens, Greece; Department of Neurology (N.S.), Columbia University, New York, NY; Centre for Healthy Brain Ageing (P.S.S., D.M.L.) and Dementia Collaborative Research Centre (P.S.S.), University of New South Wales, Sydney, Australia; Department of Psychiatry (T.H.K.), Yonsei University Wonju Severance Christian Hospital; Department of Psychiatry (K.P.K.), Dongguk University Gyeongju Hospital; Department of Psychiatry (B.J.K.), Gyeongsang National University, School of Medicine, Jinju; Department of Neuropsychiatry (S.G.K.), Soonchunhyang University Bucheon Hospital; Department of Psychiatry (J.L.K.), School of Medicine, Chungnam National University, Daejeon; Department of Psychiatry (S.W.M.), School of Medicine, Konkuk University and Konkuk University Chungju Hospital; Department of Neuropsychiatry (J.H.P.), Jeju National University Hospital; Department of Psychiatry, School of Medicine (S.-H.R.), Konkuk University and Konkuk University Medical Center, Seoul; Department of Neuropsychiatry (J.C.Y.), Kyunggi Provincial Hospital for the Elderly, Yongin; Department of Neuropsychiatry (D.Y.L.), Seoul National University Hospital; Department of Neuropsychiatry (D.W.L.), Inje University Sanggye Paik Hospital, Seoul; Department of Psychiatry (S.B.L., J.J.L.), Dankook University Hospital, Cheonan; Department of Psychiatry (J.H.J.), Kangwon National University, School of Medicine, Chuncheon, South Korea; Department of Nutrition and Dietetics (M.Y.), Harokopio University, Athens; Laboratory of Cognitive Neuroscience (M.H.K.), School of Psychology, Aristotle University of Thessaloniki; School of Medicine (G.M.H.), University of Thessaly, Larissa; Athens Association of Alzheimer's Disease and Related Disorders (P.S.), Marousi, Greece; and Department of Neurology (G.M.H), Medical School, University of Cyprus, Nicosia, Cyprus
| | - Jin Hyeong Jhoo
- From the Department of Brain and Cognitive Sciences (H.J., K.W.K.), Seoul National University College of Natural Sciences; Department of Psychiatry (J.B.B., J.W.H., D.Y.L., K.W.K.), Seoul National University, College of Medicine; Department of Neuropsychiatry (J.B.B., J.W.H., K.W.K.), Seoul National University Bundang Hospital, Seongnam, South Korea; Department of Neurology (E.D.), Faculty of Medicine, University of Thessaly, Larissa; Department of Social Medicine, Psychiatry and Neurology (N.S.), National and Kapodistrian University of Athens, Greece; Department of Neurology (N.S.), Columbia University, New York, NY; Centre for Healthy Brain Ageing (P.S.S., D.M.L.) and Dementia Collaborative Research Centre (P.S.S.), University of New South Wales, Sydney, Australia; Department of Psychiatry (T.H.K.), Yonsei University Wonju Severance Christian Hospital; Department of Psychiatry (K.P.K.), Dongguk University Gyeongju Hospital; Department of Psychiatry (B.J.K.), Gyeongsang National University, School of Medicine, Jinju; Department of Neuropsychiatry (S.G.K.), Soonchunhyang University Bucheon Hospital; Department of Psychiatry (J.L.K.), School of Medicine, Chungnam National University, Daejeon; Department of Psychiatry (S.W.M.), School of Medicine, Konkuk University and Konkuk University Chungju Hospital; Department of Neuropsychiatry (J.H.P.), Jeju National University Hospital; Department of Psychiatry, School of Medicine (S.-H.R.), Konkuk University and Konkuk University Medical Center, Seoul; Department of Neuropsychiatry (J.C.Y.), Kyunggi Provincial Hospital for the Elderly, Yongin; Department of Neuropsychiatry (D.Y.L.), Seoul National University Hospital; Department of Neuropsychiatry (D.W.L.), Inje University Sanggye Paik Hospital, Seoul; Department of Psychiatry (S.B.L., J.J.L.), Dankook University Hospital, Cheonan; Department of Psychiatry (J.H.J.), Kangwon National University, School of Medicine, Chuncheon, South Korea; Department of Nutrition and Dietetics (M.Y.), Harokopio University, Athens; Laboratory of Cognitive Neuroscience (M.H.K.), School of Psychology, Aristotle University of Thessaloniki; School of Medicine (G.M.H.), University of Thessaly, Larissa; Athens Association of Alzheimer's Disease and Related Disorders (P.S.), Marousi, Greece; and Department of Neurology (G.M.H), Medical School, University of Cyprus, Nicosia, Cyprus
| | - Mary Yannakoulia
- From the Department of Brain and Cognitive Sciences (H.J., K.W.K.), Seoul National University College of Natural Sciences; Department of Psychiatry (J.B.B., J.W.H., D.Y.L., K.W.K.), Seoul National University, College of Medicine; Department of Neuropsychiatry (J.B.B., J.W.H., K.W.K.), Seoul National University Bundang Hospital, Seongnam, South Korea; Department of Neurology (E.D.), Faculty of Medicine, University of Thessaly, Larissa; Department of Social Medicine, Psychiatry and Neurology (N.S.), National and Kapodistrian University of Athens, Greece; Department of Neurology (N.S.), Columbia University, New York, NY; Centre for Healthy Brain Ageing (P.S.S., D.M.L.) and Dementia Collaborative Research Centre (P.S.S.), University of New South Wales, Sydney, Australia; Department of Psychiatry (T.H.K.), Yonsei University Wonju Severance Christian Hospital; Department of Psychiatry (K.P.K.), Dongguk University Gyeongju Hospital; Department of Psychiatry (B.J.K.), Gyeongsang National University, School of Medicine, Jinju; Department of Neuropsychiatry (S.G.K.), Soonchunhyang University Bucheon Hospital; Department of Psychiatry (J.L.K.), School of Medicine, Chungnam National University, Daejeon; Department of Psychiatry (S.W.M.), School of Medicine, Konkuk University and Konkuk University Chungju Hospital; Department of Neuropsychiatry (J.H.P.), Jeju National University Hospital; Department of Psychiatry, School of Medicine (S.-H.R.), Konkuk University and Konkuk University Medical Center, Seoul; Department of Neuropsychiatry (J.C.Y.), Kyunggi Provincial Hospital for the Elderly, Yongin; Department of Neuropsychiatry (D.Y.L.), Seoul National University Hospital; Department of Neuropsychiatry (D.W.L.), Inje University Sanggye Paik Hospital, Seoul; Department of Psychiatry (S.B.L., J.J.L.), Dankook University Hospital, Cheonan; Department of Psychiatry (J.H.J.), Kangwon National University, School of Medicine, Chuncheon, South Korea; Department of Nutrition and Dietetics (M.Y.), Harokopio University, Athens; Laboratory of Cognitive Neuroscience (M.H.K.), School of Psychology, Aristotle University of Thessaloniki; School of Medicine (G.M.H.), University of Thessaly, Larissa; Athens Association of Alzheimer's Disease and Related Disorders (P.S.), Marousi, Greece; and Department of Neurology (G.M.H), Medical School, University of Cyprus, Nicosia, Cyprus
| | - Mary H Kosmidis
- From the Department of Brain and Cognitive Sciences (H.J., K.W.K.), Seoul National University College of Natural Sciences; Department of Psychiatry (J.B.B., J.W.H., D.Y.L., K.W.K.), Seoul National University, College of Medicine; Department of Neuropsychiatry (J.B.B., J.W.H., K.W.K.), Seoul National University Bundang Hospital, Seongnam, South Korea; Department of Neurology (E.D.), Faculty of Medicine, University of Thessaly, Larissa; Department of Social Medicine, Psychiatry and Neurology (N.S.), National and Kapodistrian University of Athens, Greece; Department of Neurology (N.S.), Columbia University, New York, NY; Centre for Healthy Brain Ageing (P.S.S., D.M.L.) and Dementia Collaborative Research Centre (P.S.S.), University of New South Wales, Sydney, Australia; Department of Psychiatry (T.H.K.), Yonsei University Wonju Severance Christian Hospital; Department of Psychiatry (K.P.K.), Dongguk University Gyeongju Hospital; Department of Psychiatry (B.J.K.), Gyeongsang National University, School of Medicine, Jinju; Department of Neuropsychiatry (S.G.K.), Soonchunhyang University Bucheon Hospital; Department of Psychiatry (J.L.K.), School of Medicine, Chungnam National University, Daejeon; Department of Psychiatry (S.W.M.), School of Medicine, Konkuk University and Konkuk University Chungju Hospital; Department of Neuropsychiatry (J.H.P.), Jeju National University Hospital; Department of Psychiatry, School of Medicine (S.-H.R.), Konkuk University and Konkuk University Medical Center, Seoul; Department of Neuropsychiatry (J.C.Y.), Kyunggi Provincial Hospital for the Elderly, Yongin; Department of Neuropsychiatry (D.Y.L.), Seoul National University Hospital; Department of Neuropsychiatry (D.W.L.), Inje University Sanggye Paik Hospital, Seoul; Department of Psychiatry (S.B.L., J.J.L.), Dankook University Hospital, Cheonan; Department of Psychiatry (J.H.J.), Kangwon National University, School of Medicine, Chuncheon, South Korea; Department of Nutrition and Dietetics (M.Y.), Harokopio University, Athens; Laboratory of Cognitive Neuroscience (M.H.K.), School of Psychology, Aristotle University of Thessaloniki; School of Medicine (G.M.H.), University of Thessaly, Larissa; Athens Association of Alzheimer's Disease and Related Disorders (P.S.), Marousi, Greece; and Department of Neurology (G.M.H), Medical School, University of Cyprus, Nicosia, Cyprus
| | - Giorgos M Hadjigeorgiou
- From the Department of Brain and Cognitive Sciences (H.J., K.W.K.), Seoul National University College of Natural Sciences; Department of Psychiatry (J.B.B., J.W.H., D.Y.L., K.W.K.), Seoul National University, College of Medicine; Department of Neuropsychiatry (J.B.B., J.W.H., K.W.K.), Seoul National University Bundang Hospital, Seongnam, South Korea; Department of Neurology (E.D.), Faculty of Medicine, University of Thessaly, Larissa; Department of Social Medicine, Psychiatry and Neurology (N.S.), National and Kapodistrian University of Athens, Greece; Department of Neurology (N.S.), Columbia University, New York, NY; Centre for Healthy Brain Ageing (P.S.S., D.M.L.) and Dementia Collaborative Research Centre (P.S.S.), University of New South Wales, Sydney, Australia; Department of Psychiatry (T.H.K.), Yonsei University Wonju Severance Christian Hospital; Department of Psychiatry (K.P.K.), Dongguk University Gyeongju Hospital; Department of Psychiatry (B.J.K.), Gyeongsang National University, School of Medicine, Jinju; Department of Neuropsychiatry (S.G.K.), Soonchunhyang University Bucheon Hospital; Department of Psychiatry (J.L.K.), School of Medicine, Chungnam National University, Daejeon; Department of Psychiatry (S.W.M.), School of Medicine, Konkuk University and Konkuk University Chungju Hospital; Department of Neuropsychiatry (J.H.P.), Jeju National University Hospital; Department of Psychiatry, School of Medicine (S.-H.R.), Konkuk University and Konkuk University Medical Center, Seoul; Department of Neuropsychiatry (J.C.Y.), Kyunggi Provincial Hospital for the Elderly, Yongin; Department of Neuropsychiatry (D.Y.L.), Seoul National University Hospital; Department of Neuropsychiatry (D.W.L.), Inje University Sanggye Paik Hospital, Seoul; Department of Psychiatry (S.B.L., J.J.L.), Dankook University Hospital, Cheonan; Department of Psychiatry (J.H.J.), Kangwon National University, School of Medicine, Chuncheon, South Korea; Department of Nutrition and Dietetics (M.Y.), Harokopio University, Athens; Laboratory of Cognitive Neuroscience (M.H.K.), School of Psychology, Aristotle University of Thessaloniki; School of Medicine (G.M.H.), University of Thessaly, Larissa; Athens Association of Alzheimer's Disease and Related Disorders (P.S.), Marousi, Greece; and Department of Neurology (G.M.H), Medical School, University of Cyprus, Nicosia, Cyprus
| | - Paraskevi Sakka
- From the Department of Brain and Cognitive Sciences (H.J., K.W.K.), Seoul National University College of Natural Sciences; Department of Psychiatry (J.B.B., J.W.H., D.Y.L., K.W.K.), Seoul National University, College of Medicine; Department of Neuropsychiatry (J.B.B., J.W.H., K.W.K.), Seoul National University Bundang Hospital, Seongnam, South Korea; Department of Neurology (E.D.), Faculty of Medicine, University of Thessaly, Larissa; Department of Social Medicine, Psychiatry and Neurology (N.S.), National and Kapodistrian University of Athens, Greece; Department of Neurology (N.S.), Columbia University, New York, NY; Centre for Healthy Brain Ageing (P.S.S., D.M.L.) and Dementia Collaborative Research Centre (P.S.S.), University of New South Wales, Sydney, Australia; Department of Psychiatry (T.H.K.), Yonsei University Wonju Severance Christian Hospital; Department of Psychiatry (K.P.K.), Dongguk University Gyeongju Hospital; Department of Psychiatry (B.J.K.), Gyeongsang National University, School of Medicine, Jinju; Department of Neuropsychiatry (S.G.K.), Soonchunhyang University Bucheon Hospital; Department of Psychiatry (J.L.K.), School of Medicine, Chungnam National University, Daejeon; Department of Psychiatry (S.W.M.), School of Medicine, Konkuk University and Konkuk University Chungju Hospital; Department of Neuropsychiatry (J.H.P.), Jeju National University Hospital; Department of Psychiatry, School of Medicine (S.-H.R.), Konkuk University and Konkuk University Medical Center, Seoul; Department of Neuropsychiatry (J.C.Y.), Kyunggi Provincial Hospital for the Elderly, Yongin; Department of Neuropsychiatry (D.Y.L.), Seoul National University Hospital; Department of Neuropsychiatry (D.W.L.), Inje University Sanggye Paik Hospital, Seoul; Department of Psychiatry (S.B.L., J.J.L.), Dankook University Hospital, Cheonan; Department of Psychiatry (J.H.J.), Kangwon National University, School of Medicine, Chuncheon, South Korea; Department of Nutrition and Dietetics (M.Y.), Harokopio University, Athens; Laboratory of Cognitive Neuroscience (M.H.K.), School of Psychology, Aristotle University of Thessaloniki; School of Medicine (G.M.H.), University of Thessaly, Larissa; Athens Association of Alzheimer's Disease and Related Disorders (P.S.), Marousi, Greece; and Department of Neurology (G.M.H), Medical School, University of Cyprus, Nicosia, Cyprus
| | - Ki Woong Kim
- From the Department of Brain and Cognitive Sciences (H.J., K.W.K.), Seoul National University College of Natural Sciences; Department of Psychiatry (J.B.B., J.W.H., D.Y.L., K.W.K.), Seoul National University, College of Medicine; Department of Neuropsychiatry (J.B.B., J.W.H., K.W.K.), Seoul National University Bundang Hospital, Seongnam, South Korea; Department of Neurology (E.D.), Faculty of Medicine, University of Thessaly, Larissa; Department of Social Medicine, Psychiatry and Neurology (N.S.), National and Kapodistrian University of Athens, Greece; Department of Neurology (N.S.), Columbia University, New York, NY; Centre for Healthy Brain Ageing (P.S.S., D.M.L.) and Dementia Collaborative Research Centre (P.S.S.), University of New South Wales, Sydney, Australia; Department of Psychiatry (T.H.K.), Yonsei University Wonju Severance Christian Hospital; Department of Psychiatry (K.P.K.), Dongguk University Gyeongju Hospital; Department of Psychiatry (B.J.K.), Gyeongsang National University, School of Medicine, Jinju; Department of Neuropsychiatry (S.G.K.), Soonchunhyang University Bucheon Hospital; Department of Psychiatry (J.L.K.), School of Medicine, Chungnam National University, Daejeon; Department of Psychiatry (S.W.M.), School of Medicine, Konkuk University and Konkuk University Chungju Hospital; Department of Neuropsychiatry (J.H.P.), Jeju National University Hospital; Department of Psychiatry, School of Medicine (S.-H.R.), Konkuk University and Konkuk University Medical Center, Seoul; Department of Neuropsychiatry (J.C.Y.), Kyunggi Provincial Hospital for the Elderly, Yongin; Department of Neuropsychiatry (D.Y.L.), Seoul National University Hospital; Department of Neuropsychiatry (D.W.L.), Inje University Sanggye Paik Hospital, Seoul; Department of Psychiatry (S.B.L., J.J.L.), Dankook University Hospital, Cheonan; Department of Psychiatry (J.H.J.), Kangwon National University, School of Medicine, Chuncheon, South Korea; Department of Nutrition and Dietetics (M.Y.), Harokopio University, Athens; Laboratory of Cognitive Neuroscience (M.H.K.), School of Psychology, Aristotle University of Thessaloniki; School of Medicine (G.M.H.), University of Thessaly, Larissa; Athens Association of Alzheimer's Disease and Related Disorders (P.S.), Marousi, Greece; and Department of Neurology (G.M.H), Medical School, University of Cyprus, Nicosia, Cyprus.
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da Rocha CF, de Medeiros Souza Lima Y, Carvalho HO, Pinto RC, Ferreira IM, Castro AN, Lima CS, Carvalho JCT. Action of the hydroethanolic extract of the flowers of Acmella oleracea (L.) R.K. Jansen on the reproductive performance of Wistar females rats: A popular female aphrodisiac from the Amazon. JOURNAL OF ETHNOPHARMACOLOGY 2018; 214:301-308. [PMID: 29273437 DOI: 10.1016/j.jep.2017.12.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 12/15/2017] [Accepted: 12/15/2017] [Indexed: 06/07/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The species Acmella oleracea (L.) R.K. Jansen (Asteraceae), popularly known as jambú, is marketed in fairs as a female aphrodisiac and has several pharmacological activities already confirmed, among them the sexual stimulant action. The objective of this study was to evaluate the effects of the oral administration of the hydroethanolic extract of A. oleracea flowers (EHAo) on wistar rats during the pre-mating, mating, and pre-implantation period. MATERIAL AND METHODS During the treatment period, measurements of feed intake, water intake, weight, estrous cycle, behavior, reproductive parameters, biochemical parameters, hematological parameters, and histopathology of ovaries were performed daily. RESULTS In the gas chromatography analysis - mass spectrometry characterization, the compound (2E, 6Z, 8E) -N-isobutyldeca-2,6,8-trienamide (spilanthol) was detected as the majority compound at the 84% concentration. In the conditions of this study, EHAo did not cause maternal toxicity. However, in the estrous cycle, the frequency of the Proestrous (P) and Estrous (E) phase was significantly increased with the doses of 88.91 and 444.57mg/kg of the EHAo in relation to the control. On the other hand, the metaestrous (M) and diestrous (D) phases showed a significant reduction in their frequency in the groups treated with EHAo. Water intake increased significantly (p < 0.01), as well as the triglyceride levels, the total cholesterol and fractions (p < 0.05), and the percentage of neutrophils (p < 0.05). CONCLUSION It is concluded, therefore, that the treatment with EHAo, which is one of the forms popularly used, is safe in the concentrations and time of treatment studied as it is able to influence the estrous cycle without altering folliculogenesis and fertility.
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Affiliation(s)
- Clarice Flexa da Rocha
- Laboratório de Pesquisa em Fármacos, Departamento de Ciências Biológicas e da Saúde, Universidade Federal do Amapá, Rod. Juscelino Kubitscheck, km 02, S/N, Macapá, AP 68903-419, Brazil; Programa de Pós-graduação em Ciências Farmacêuticas, Departamento de Ciências Biológicas e da Saúde, Universidade Federal do Amapá, Rod. Juscelino Kubitscheck, KM 02, S/N, Macapá, AP 68903-419, Brazil; Laboratório de Toxicologia Reprodutiva, Departamento de Ciências Biológicas e da Saúde, Universidade Federal do Amapá, Rod. Juscelino Kubitscheck, KM 02, S/N, Macapá, AP 68903-419, Brazil
| | - Yuri de Medeiros Souza Lima
- Programa de Pós-graduação em Ciências da Saúde, Departamento de Ciências Biológicas e da Saúde, Universidade Federal do Amapá, Rod. Juscelino Kubitscheck, KM 02, S/N, Macapá, AP 68903-419, Brazil
| | - Helison Oliveira Carvalho
- Laboratório de Pesquisa em Fármacos, Departamento de Ciências Biológicas e da Saúde, Universidade Federal do Amapá, Rod. Juscelino Kubitscheck, km 02, S/N, Macapá, AP 68903-419, Brazil; Programa de Pós-graduação em Ciências da Saúde, Departamento de Ciências Biológicas e da Saúde, Universidade Federal do Amapá, Rod. Juscelino Kubitscheck, KM 02, S/N, Macapá, AP 68903-419, Brazil
| | - Rodrigo Costa Pinto
- Laboratório de Pesquisa em Fármacos, Departamento de Ciências Biológicas e da Saúde, Universidade Federal do Amapá, Rod. Juscelino Kubitscheck, km 02, S/N, Macapá, AP 68903-419, Brazil; Laboratório de Toxicologia Reprodutiva, Departamento de Ciências Biológicas e da Saúde, Universidade Federal do Amapá, Rod. Juscelino Kubitscheck, KM 02, S/N, Macapá, AP 68903-419, Brazil
| | - Irlon Maciel Ferreira
- Laboratório de Pesquisa em Fármacos, Departamento de Ciências Biológicas e da Saúde, Universidade Federal do Amapá, Rod. Juscelino Kubitscheck, km 02, S/N, Macapá, AP 68903-419, Brazil; Programa de Pós-graduação em Ciências Farmacêuticas, Departamento de Ciências Biológicas e da Saúde, Universidade Federal do Amapá, Rod. Juscelino Kubitscheck, KM 02, S/N, Macapá, AP 68903-419, Brazil
| | - Andres Navarrete Castro
- Laboratorio de Farmacologia de Productos Naturales, Departamento de Farmacia, Faculdade de Quimica, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Clarissa Silva Lima
- Laboratório de Pesquisa em Fármacos, Departamento de Ciências Biológicas e da Saúde, Universidade Federal do Amapá, Rod. Juscelino Kubitscheck, km 02, S/N, Macapá, AP 68903-419, Brazil; Programa de Pós-graduação em Ciências Farmacêuticas, Departamento de Ciências Biológicas e da Saúde, Universidade Federal do Amapá, Rod. Juscelino Kubitscheck, KM 02, S/N, Macapá, AP 68903-419, Brazil; Laboratório de Toxicologia Reprodutiva, Departamento de Ciências Biológicas e da Saúde, Universidade Federal do Amapá, Rod. Juscelino Kubitscheck, KM 02, S/N, Macapá, AP 68903-419, Brazil
| | - José Carlos Tavares Carvalho
- Laboratório de Pesquisa em Fármacos, Departamento de Ciências Biológicas e da Saúde, Universidade Federal do Amapá, Rod. Juscelino Kubitscheck, km 02, S/N, Macapá, AP 68903-419, Brazil; Programa de Pós-graduação em Ciências Farmacêuticas, Departamento de Ciências Biológicas e da Saúde, Universidade Federal do Amapá, Rod. Juscelino Kubitscheck, KM 02, S/N, Macapá, AP 68903-419, Brazil; Rede de Biodiversidade e Biotecnologia da Amazônia Legal, Programa de Pós-Graduação em Biotecnologia, Universidade Federal do Amapá, Brazil.
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Linear and inverted U-shaped dose-response functions describe estrogen effects on hippocampal activity in young women. Nat Commun 2018; 9:1220. [PMID: 29572476 PMCID: PMC5865215 DOI: 10.1038/s41467-018-03679-x] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Accepted: 03/02/2018] [Indexed: 01/07/2023] Open
Abstract
In animals, 17-beta-estradiol (E2) enhances hippocampal plasticity in a dose-dependent, monotonically increasing manner, but this relationship can also exhibit an inverted U-shaped function. To investigate E2’s dose-response function in the human hippocampus, we pharmacologically increased E2 levels in 125 naturally cycling women (who were in their low-hormone menstruation phase) to physiological (equivalent to menstrual cycle peak) and supraphysiological (equivalent to levels during early pregnancy) concentrations in a placebo-controlled design. Twenty-four hours after first E2 intake, we measured brain activity during encoding of neutral and negative pictures and then tested recognition memory 24 h after encoding. Here we report that E2 exhibits both a monotonically increasing relationship with hippocampal activity as well as an inverted U-shaped relationship, depending on the hippocampal region. Hippocampal activity exhibiting a U-shaped relationship inflects at supraphysiological E2 levels, suggesting that while E2 within physiological ranges stimulates hippocampal activity, supraphysiological ranges show opposite effects. While estrogen is known to change hippocampal activity in animals, it is not known if this effect extends to humans. Here, authors vary the doses of estrogen in young women and show that the effects on hippocampal activity can be described by linear and inverted-U shaped dose-response functions.
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