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Medina J, De Guzman RM, Workman JL. Prolactin mitigates chronic stress-induced maladaptive behaviors and physiology in ovariectomized female rats. Neuropharmacology 2024; 258:110095. [PMID: 39084597 DOI: 10.1016/j.neuropharm.2024.110095] [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: 03/22/2024] [Revised: 06/05/2024] [Accepted: 07/27/2024] [Indexed: 08/02/2024]
Abstract
Stress is a major risk factor for several neuropsychiatric disorders in women, including postpartum depression. During the postpartum period, diminished ovarian hormone secretion increases susceptibility to developing depressive symptoms. Pleiotropic peptide hormones, like prolactin, are markedly released during lactation and suppress hypothalamic-pituitary-adrenal axis responses in women and acute stress-induced behavioral responses in female rodents. However, the effects of prolactin on chronic stress-induced maladaptive behaviors remain unclear. Here, we used chronic variable stress to induce maladaptive physiology in ovariectomized female rats and concurrently administered prolactin to assess its effects on several depression-relevant behavioral, endocrine, and neural characteristics. We found that chronic stress increased sucrose anhedonia and passive coping in saline-treated, but not prolactin-treated rats. Prolactin treatment did not alter stress-induced thigmotaxis, corticosterone (CORT) concentrations, hippocampal cell activation or survival. However, prolactin treatment reduced basal CORT concentrations and increased dopaminergic cells in the ventral tegmental area. Further, prolactin-treated rats had reduced microglial activation in the ventral hippocampus following chronic stress exposure. Together, these data suggest prolactin mitigates chronic stress-induced maladaptive behaviors and physiology in hypogonadal females. Moreover, these findings imply neuroendocrine-immune mechanisms by which peptide hormones confer stress resilience during periods of low ovarian hormone secretion.
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Affiliation(s)
- Joanna Medina
- Department of Psychology, University at Albany, State University of New York, 1400 Washington Ave, Albany, NY, 12222, USA.
| | - Rose M De Guzman
- Department of Psychology, University at Albany, State University of New York, 1400 Washington Ave, Albany, NY, 12222, USA
| | - Joanna L Workman
- Department of Psychology, University at Albany, State University of New York, 1400 Washington Ave, Albany, NY, 12222, USA; Center for Neuroscience Research, University at Albany, State University of New York, 1400 Washington Ave, Albany, NY, 12222, USA
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2
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Zhou L, Wu Z, Li Y, Lin S, Xiao L, Wang H, Wang G. Brief Pup Separation in Lactation Confers Stress Resistance with Increased Prolactin and Adult Hippocampal Neurogenesis in Postpartum C57BL/6J Dams. Neurochem Res 2024:10.1007/s11064-024-04231-8. [PMID: 39235577 DOI: 10.1007/s11064-024-04231-8] [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: 07/01/2024] [Revised: 08/19/2024] [Accepted: 08/20/2024] [Indexed: 09/06/2024]
Abstract
Prolactin (PRL) assumes a pivotal role during the postpartum phase, particularly within the hippocampus-a region densely populated with receptors for stress hormones, where stress significantly inhibits adult hippocampal neurogenesis (AHN). The reduction in neurogenesis is implicated in the pathogenesis of anxiety and depression. Mothers are at an increased risk of developing depression when exposed to chronic stress. Therefore, it is imperative to investigate the potential role of PRL in depression-like behaviors stemming from prolonged postpartum stress, and to explore any underlying mechanisms. Despite pup separation (PS) being a natural postpartum care practice, the impact of various PS methods on lactating dams remains uncertain. Lactating C57BL/6J mice, from postpartum day (PPD) 1 to PPD 21, underwent no PS (NPS), brief PS (15 min per day, PS15), or long PS (180 min per day, PS180), followed by 21 days of chronic restraint stress (CRS). Behavioral tests were conducted, and measurements included serum PRL concentration, PRL-R expression, and AHN in the hippocampus. Dams with CRS exhibited cognitive decline, depressive- and anxiety-like behaviors, and reduced PRL secretion, correlating with lower levels of AHN. PS15 dams displayed lower levels of depressive- and anxiety-like behaviors and cognitive decline compared to NPS and PS180 dams. Significantly, PS15 dams exhibited higher levels of AHN, PRL-R expression in the hippocampus, and serum PRL concentration. This study collectively reveals reduced serum PRL and AHN in dams with cognitive decline and depressive- and anxiety-like behaviors after CRS. Brief PS confers resistance to behavioral deficits after CRS, increasing serum PRL concentration and reversing AHN decrease in dams.
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Affiliation(s)
- Lin Zhou
- Department of Psychiatry, Renmin Hospital of Wuhan University, Jiefang Road No.238, Wuhan, 430060, China
| | - Zuotian Wu
- Department of Neurology, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, 430060, China
| | - Yixin Li
- Department of Psychiatry, Renmin Hospital of Wuhan University, Jiefang Road No.238, Wuhan, 430060, China
| | - Shanshan Lin
- Department of Psychiatry, Renmin Hospital of Wuhan University, Jiefang Road No.238, Wuhan, 430060, China
| | - Ling Xiao
- Department of Psychiatry, Renmin Hospital of Wuhan University, Jiefang Road No.238, Wuhan, 430060, China
| | - Huiling Wang
- Department of Psychiatry, Renmin Hospital of Wuhan University, Jiefang Road No.238, Wuhan, 430060, China
| | - Gaohua Wang
- Department of Psychiatry, Renmin Hospital of Wuhan University, Jiefang Road No.238, Wuhan, 430060, China.
- Institute of Neuropsychiatry, Renmin Hospital of Wuhan University, Jiefang Road No.238, Wuhan, 430060, China.
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Li Y, Zhou L, Xiao L, Wang H, Wang G. Wheel Running During Pregnancy Alleviates Anxiety-and Depression-Like Behaviors During the Postpartum Period in Mice: The Roles of NLRP3 Neuroinflammasome Activation, Prolactin, and the Prolactin Receptor in the Hippocampus. Neurochem Res 2024; 49:2615-2635. [PMID: 38904910 DOI: 10.1007/s11064-024-04180-2] [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: 11/22/2023] [Revised: 05/05/2024] [Accepted: 05/22/2024] [Indexed: 06/22/2024]
Abstract
Despite the increase in the prevalence of postpartum depression among maternal disorder, its treatment outcomes remain suboptimal. Studies have shown that exercise can reduce postpartum depressive episodes in the mother, but the effects of exercise during pregnancy on maternal behavior and the potential mechanisms involved remain poorly understood. From the second day of pregnancy to the day of birth, dams exercised for 1 h a day by running on a controlled wheel. The maternal behaviors of the dams were assessed on postpartum day 2 to postpartum day 8. Chronic restraint stress was applied from postpartum day 2 to day 12. Blood was collected on postpartum days 3 and 8, then subjected to ELISA to determine the serum concentration of prolactin. The weight of each dam and the food intake were recorded. Anxiety- and depression-like behavioral tests were conducted, and hippocampal neuroinflammation and prolactin receptor levels were measured. The dams exhibited elevated levels of anxiety and depression, decreased serum prolactin levels, decreased prolactin receptor expression, and activation of NLRP3-mediated neuroinflammation in the hippocampus following the induction of postpartum chronic restraint stress, which were reversed with controlled wheel running during pregnancy. Overall, the findings of this study revealed that the preventive effects of exercise during pregnancy on postpartum anxiety-and depression-like behaviors were accompanied by increased serum prolactin levels, hippocampal prolactin receptor expression and hippocampal NLRP3-mediated neuroinflammation.
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Affiliation(s)
- Yixin Li
- Department of Psychiatry, Renmin Hospital of Wuhan University, Jiefang Road No. 238, Wuhan, 430060, China
| | - Lin Zhou
- Department of Psychiatry, Renmin Hospital of Wuhan University, Jiefang Road No. 238, Wuhan, 430060, China
| | - Ling Xiao
- Department of Psychiatry, Renmin Hospital of Wuhan University, Jiefang Road No. 238, Wuhan, 430060, China
| | - Huiling Wang
- Department of Psychiatry, Renmin Hospital of Wuhan University, Jiefang Road No. 238, Wuhan, 430060, China
| | - Gaohua Wang
- Department of Psychiatry, Renmin Hospital of Wuhan University, Jiefang Road No. 238, Wuhan, 430060, China.
- Institute of Neuropsychiatry, Renmin Hospital of Wuhan University, Jiefang Road No. 238, Wuhan, 430060, China.
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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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Molina-Salinas G, Langley E, Cerbon M. Prolactin-induced neuroprotection against excitotoxicity is mediated via PI3K/AKT and GSK3β/NF-κB in primary cultures of hippocampal neurons. Peptides 2023; 166:171037. [PMID: 37301481 DOI: 10.1016/j.peptides.2023.171037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 05/15/2023] [Accepted: 06/03/2023] [Indexed: 06/12/2023]
Abstract
Prolactin (PRL) is a polypeptide hormone that has been reported to play a significant role in neuroprotection against neuronal excitotoxicity produced by glutamate (Glu) or kainic acid (KA) in both, in vitro and in vivo models. However, the molecular mechanisms involved in PRL's neuroprotective effects in the hippocampus have not been completely elucidated. The aim of the present study was to assess the signaling pathways involved in PRL neuroprotection against excitotoxicity. Primary rat hippocampal neuronal cell cultures were used to assess PRL-induced signaling pathway activation. The effects of PRL on neuronal viability, as well as its effects on activation of key regulatory pathways, phosphoinositide 3-kinases/Protein Kinase B (PI3K/AKT) and glycogen synthase kinase 3β / nuclear factor kappa B (GSK3β/NF-κB), were evaluated under conditions of Glutamate-induced excitotoxicity. Additionally, the effect on downstream regulated genes such as Bcl-2 and Nrf2, was assessed. Here, we show that the PI3K/AKT signaling pathway is activated by PRL treatment during excitotoxicity, promoting neuronal survival through upregulation of active AKT and GSK3β/NF-κB, resulting in induction of Bcl-2 and Nrf2 gene expression. Inhibition of the PI3K/AKT signaling pathway abrogated the protective effect of PRL against Glu-induced neuronal death. Overall, results indicate that the neuroprotective actions of PRL are mediated in part, by the activation of the AKT pathway and survival genes. Our data support the idea that PRL could be useful as a potential neuroprotective agent in different neurological and neurodegenerative diseases.
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Affiliation(s)
- G Molina-Salinas
- Facultad de Química, Universidad Nacional Autónoma de México, CDMX, México 04510, Mexico
| | - E Langley
- Subdirección de Investigación Básica, Instituto Nacional de Cancerología, CDMX, México 14080, Mexico
| | - M Cerbon
- Facultad de Química, Universidad Nacional Autónoma de México, CDMX, México 04510, Mexico.
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Faron-Górecka A, Latocha K, Pabian P, Kolasa M, Sobczyk-Krupiarz I, Dziedzicka-Wasylewska M. The Involvement of Prolactin in Stress-Related Disorders. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:3257. [PMID: 36833950 PMCID: PMC9959798 DOI: 10.3390/ijerph20043257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Accepted: 02/07/2023] [Indexed: 06/18/2023]
Abstract
The most important and widely studied role of prolactin (PRL) is its modulation of stress responses during pregnancy and lactation. PRL acts as a neuropeptide to support physiological reproductive responses. The effects of PRL on the nervous system contribute to a wide range of changes in the female brain during pregnancy and the inhibition of the hypothalamic-pituitary axis. All these changes contribute to the behavioral and physiological adaptations of a young mother to enable reproductive success. PRL-driven brain adaptations are also crucial for regulating maternal emotionality and well-being. Hyperprolactinemia (elevated PRL levels) is a natural and beneficial phenomenon during pregnancy and lactation. However, in other situations, it is often associated with serious endocrine disorders, such as ovulation suppression, which results in a lack of offspring. This introductory example shows how complex this hormone is. In this review, we focus on the different roles of PRL in the body and emphasize the results obtained from animal models of neuropsychiatric disorders.
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Affiliation(s)
- Agata Faron-Górecka
- Department of Pharmacology, Maj Institute of Pharmacology, Polish Academy of Sciences, 31-343 Kraków, Poland
| | - Katarzyna Latocha
- Department of Pharmacology, Maj Institute of Pharmacology, Polish Academy of Sciences, 31-343 Kraków, Poland
| | - Paulina Pabian
- Department of Pharmacology, Maj Institute of Pharmacology, Polish Academy of Sciences, 31-343 Kraków, Poland
| | - Magdalena Kolasa
- Department of Pharmacology, Maj Institute of Pharmacology, Polish Academy of Sciences, 31-343 Kraków, Poland
| | - Iwona Sobczyk-Krupiarz
- Department of Infectious and Tropical Diseases, Jagiellonian University Medical College, 30-688 Kraków, Poland
| | - Marta Dziedzicka-Wasylewska
- Department of Pharmacology, Maj Institute of Pharmacology, Polish Academy of Sciences, 31-343 Kraków, Poland
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Pundir M, Papagerakis S, De Rosa MC, Chronis N, Kurabayashi K, Abdulmawjood S, Prince MEP, Lobanova L, Chen X, Papagerakis P. Emerging biotechnologies for evaluating disruption of stress, sleep, and circadian rhythm mechanism using aptamer-based detection of salivary biomarkers. Biotechnol Adv 2022; 59:107961. [DOI: 10.1016/j.biotechadv.2022.107961] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 03/30/2022] [Accepted: 04/09/2022] [Indexed: 12/26/2022]
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8
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Jeong Yu H, Lin Kim Y, Jung Kim M, Mee Park J, Young Park S, Nae Park S, Won Yang D. The Effect of Choline Alphoscerate on Non spatial memory and Neuronal Differentiation in a Rat Model of Dual Stress. Brain Res 2022; 1786:147900. [DOI: 10.1016/j.brainres.2022.147900] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 03/18/2022] [Accepted: 03/29/2022] [Indexed: 12/30/2022]
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Carretero-Hernández M, Catalano-Iniesta L, Blanco EJ, García-Barrado MJ, Carretero J. Highlights regarding prolactin in the dentate gyrus and hippocampus. VITAMINS AND HORMONES 2022; 118:479-505. [PMID: 35180938 DOI: 10.1016/bs.vh.2021.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Prolactin (PRL) is a pituitary hormone that has been typically related to lactogenesis in mammals. However, it has been described over 300 roles in the organism of vertebrae and its relationship with the central nervous system (CNS) is yet to be clarified. Mainly secreted by the pituitary gland, the source of prolactin in the CNS remains unclear, where some experiments suggest active transport via an unknown carrier or, on the contrary, PRL being synthesized on the brain. So far, it seems to be involved with neurogenesis, neuroprotection, maternal behavior and cognitive processes in the hippocampus and dentate gyrus, among other regions.
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Affiliation(s)
- Marta Carretero-Hernández
- Department of Human Anatomy and Histology, Faculty of Medicine, University of Salamanca, Spain; Laboratory of Neuroendocrinology, Institute of Neurosciences of Castilla y León (INCyL), and Laboratory of Neuroendocrinology and Obesity, Institute of Biomedical Research of Salamanca (IBSAL), University of Salamanca, Spain.
| | - Leonardo Catalano-Iniesta
- Department of Human Anatomy and Histology, Faculty of Medicine, University of Salamanca, Spain; Laboratory of Neuroendocrinology, Institute of Neurosciences of Castilla y León (INCyL), and Laboratory of Neuroendocrinology and Obesity, Institute of Biomedical Research of Salamanca (IBSAL), University of Salamanca, Spain
| | - Enrique J Blanco
- Department of Human Anatomy and Histology, Faculty of Medicine, University of Salamanca, Spain; Laboratory of Neuroendocrinology, Institute of Neurosciences of Castilla y León (INCyL), and Laboratory of Neuroendocrinology and Obesity, Institute of Biomedical Research of Salamanca (IBSAL), University of Salamanca, Spain
| | - María José García-Barrado
- Laboratory of Neuroendocrinology, Institute of Neurosciences of Castilla y León (INCyL), and Laboratory of Neuroendocrinology and Obesity, Institute of Biomedical Research of Salamanca (IBSAL), University of Salamanca, Spain; Department of Physiology and Pharmacology, Faculty of Medicine, University of Salamanca, Spain
| | - José Carretero
- Department of Human Anatomy and Histology, Faculty of Medicine, University of Salamanca, Spain; Laboratory of Neuroendocrinology, Institute of Neurosciences of Castilla y León (INCyL), and Laboratory of Neuroendocrinology and Obesity, Institute of Biomedical Research of Salamanca (IBSAL), University of Salamanca, Spain
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Costa-Brito AR, Gonçalves I, Santos CRA. The brain as a source and a target of prolactin in mammals. Neural Regen Res 2022; 17:1695-1702. [PMID: 35017416 PMCID: PMC8820687 DOI: 10.4103/1673-5374.332124] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Prolactin is a polypeptide hormone associated with an extensive variety of biological functions. Among the roles of prolactin in vertebrates, some were preserved throughout evolution. This is the case of its function in the brain, where prolactin receptors, are expressed in different structures of the central nervous system. In the brain, prolactin actions are principally associated with reproduction and parental behavior, and involves the modulation of adult neurogenesis, neuroprotection, and neuroplasticity, especially during pregnancy, thereby preparing the brain to parenthood. Prolactin is mainly produced by specialized cells in the anterior pituitary gland. However, during vertebrate evolution many other extrapituitary tissues do also produce prolactin, like the immune system, endothelial cells, reproductive structures and in several regions of the brain. This review summarizes the relevance of prolactin for brain function, the sources of prolactin in the central nervous system, as well as its local production and secretion. A highlight on the impact of prolactin in human neurological diseases is also provided.
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Affiliation(s)
- Ana R Costa-Brito
- CICS-UBI - Health Sciences Research Centre, Universidade da Beira Interior, Covilhã, Portugal
| | - Isabel Gonçalves
- CICS-UBI - Health Sciences Research Centre; C4-UBI -Cloud Computing Competence Centre, Universidade da Beira Interior, Covilhã, Portugal
| | - Cecília R A Santos
- CICS-UBI - Health Sciences Research Centre; C4-UBI -Cloud Computing Competence Centre, Universidade da Beira Interior, Covilhã, Portugal
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Radhakrishnan RK, Kandasamy M. SARS-CoV-2-Mediated Neuropathogenesis, Deterioration of Hippocampal Neurogenesis and Dementia. Am J Alzheimers Dis Other Demen 2022; 37:15333175221078418. [PMID: 35133907 PMCID: PMC10581113 DOI: 10.1177/15333175221078418] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A significant portion of COVID-19 patients and survivors display marked clinical signs of neurocognitive impairments. SARS-CoV-2-mediated peripheral cytokine storm and its neurotropism appear to elicit the activation of glial cells in the brain proceeding to neuroinflammation. While adult neurogenesis has been identified as a key cellular basis of cognitive functions, neuroinflammation-induced aberrant neuroregenerative plasticity in the hippocampus has been implicated in progressive memory loss in ageing and brain disorders. Notably, recent histological studies of post-mortem human and experimental animal brains indicate that SARS-CoV-2 infection impairs neurogenic process in the hippocampus of the brain due to neuroinflammation. Considering the facts, this article describes the prominent neuropathogenic characteristics and neurocognitive impairments in COVID-19 and emphasizes a viewpoint that neuroinflammation-mediated deterioration of hippocampal neurogenesis could contribute to the onset and progression of dementia in COVID-19. Thus, it necessitates the unmet need for regenerative medicine for the effective management of neurocognitive deficits in COVID-19.
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Affiliation(s)
- Risna K. Radhakrishnan
- Laboratory of Stem Cells and Neuroregeneration, Department of Animal Science, School of Life Sciences, Bharathidasan University, Tiruchirappalli, India
| | - Mahesh Kandasamy
- Laboratory of Stem Cells and Neuroregeneration, Department of Animal Science, School of Life Sciences, Bharathidasan University, Tiruchirappalli, India
- Faculty Recharge Programme, University Grants Commission (UGC-FRP), New Delhi, India
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12
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Espina JEC, Bagamasbad PD. Synergistic gene regulation by thyroid hormone and glucocorticoid in the hippocampus. VITAMINS AND HORMONES 2021; 118:35-81. [PMID: 35180933 DOI: 10.1016/bs.vh.2021.11.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The hippocampus is considered the center for learning and memory in the brain, and its development and function is greatly affected by the thyroid and stress axes. Thyroid hormone (TH) and glucocorticoids (GC) are known to have a synergistic effect on developmental programs across several vertebrate species, and their effects on hippocampal structure and function are well-documented. However, there are few studies that focus on the processes and genes that are cooperatively regulated by the two hormone axes. Cross-regulation of the thyroid and stress axes in the hippocampus occurs on multiple levels such that TH can regulate the expression of the GC receptor (GR) while GC can modulate tissue sensitivity to TH by controlling the expression of TH receptor (TR) and enzymes involved in TH biosynthesis. Thyroid hormone and GC are also known to synergistically regulate the transcription of genes associated with neuronal function and development. Synergistic gene regulation by TH and GC may occur through the direct, cooperative action of TR and GR on common target genes, or by indirect mechanisms involving gene regulatory cascades activated by TR and GR. In this chapter, we describe the known physiological effects and underlying molecular mechanisms of TH and GC synergistic gene regulation in the hippocampus.
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Affiliation(s)
- Jose Ezekiel C Espina
- National Institute of Molecular Biology and Biotechnology, University of the Philippines Diliman, Quezon City, Philippines
| | - Pia D Bagamasbad
- National Institute of Molecular Biology and Biotechnology, University of the Philippines Diliman, Quezon City, Philippines.
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Brinkmeyer-Langford C, Amstalden K, Konganti K, Hillhouse A, Lawley K, Perez-Gomez A, Young CR, Welsh CJ, Threadgill DW. Resilience in Long-Term Viral Infection: Genetic Determinants and Interactions. Int J Mol Sci 2021; 22:ijms222111379. [PMID: 34768809 PMCID: PMC8584141 DOI: 10.3390/ijms222111379] [Citation(s) in RCA: 3] [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: 10/02/2021] [Revised: 10/16/2021] [Accepted: 10/20/2021] [Indexed: 02/06/2023] Open
Abstract
Virus-induced neurological sequelae resulting from infection by Theiler's murine encephalomyelitis virus (TMEV) are used for studying human conditions ranging from epileptic seizures to demyelinating disease. Mouse strains are typically considered susceptible or resistant to TMEV infection based on viral persistence and extreme phenotypes, such as demyelination. We have identified a broader spectrum of phenotypic outcomes by infecting strains of the genetically diverse Collaborative Cross (CC) mouse resource. We evaluated the chronic-infection gene expression profiles of hippocampi and thoracic spinal cords for 19 CC strains in relation to phenotypic severity and TMEV persistence. Strains were clustered based on similar phenotypic profiles and TMEV levels at 90 days post-infection, and we categorized distinct TMEV response profiles. The three most common profiles included "resistant" and "susceptible," as before, as well as a "resilient" TMEV response group which experienced both TMEV persistence and mild neurological phenotypes even at 90 days post-infection. Each profile had a distinct gene expression signature, allowing the identification of pathways and networks specific to each TMEV response group. CC founder haplotypes for genes involved in these pathways/networks revealed candidate response-specific alleles. These alleles demonstrated pleiotropy and epigenetic (miRNA) regulation in long-term TMEV infection, with particular relevance for resilient mouse strains.
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Affiliation(s)
- Candice Brinkmeyer-Langford
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX 77843, USA; (K.A.); (K.L.); (A.P.-G.); (C.R.Y.); (C.J.W.)
- Correspondence:
| | - Katia Amstalden
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX 77843, USA; (K.A.); (K.L.); (A.P.-G.); (C.R.Y.); (C.J.W.)
| | - Kranti Konganti
- Texas A&M Institute for Genome Sciences and Society, Texas A&M University, College Station, TX 77843, USA; (K.K.); (A.H.); (D.W.T.)
| | - Andrew Hillhouse
- Texas A&M Institute for Genome Sciences and Society, Texas A&M University, College Station, TX 77843, USA; (K.K.); (A.H.); (D.W.T.)
| | - Koedi Lawley
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX 77843, USA; (K.A.); (K.L.); (A.P.-G.); (C.R.Y.); (C.J.W.)
| | - Aracely Perez-Gomez
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX 77843, USA; (K.A.); (K.L.); (A.P.-G.); (C.R.Y.); (C.J.W.)
| | - Colin R. Young
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX 77843, USA; (K.A.); (K.L.); (A.P.-G.); (C.R.Y.); (C.J.W.)
| | - C. Jane Welsh
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX 77843, USA; (K.A.); (K.L.); (A.P.-G.); (C.R.Y.); (C.J.W.)
- Department of Veterinary Pathobiology, Texas A&M University, College Station, TX 77843, USA
| | - David W. Threadgill
- Texas A&M Institute for Genome Sciences and Society, Texas A&M University, College Station, TX 77843, USA; (K.K.); (A.H.); (D.W.T.)
- Department of Molecular and Cellular Medicine, Texas A&M University, College Station, TX 77843, USA
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Wan L, Huang RJ, Luo ZH, Gong JE, Pan A, Manavis J, Yan XX, Xiao B. Reproduction-Associated Hormones and Adult Hippocampal Neurogenesis. Neural Plast 2021; 2021:3651735. [PMID: 34539776 PMCID: PMC8448607 DOI: 10.1155/2021/3651735] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 08/17/2021] [Indexed: 11/18/2022] Open
Abstract
The levels of reproduction-associated hormones in females, such as estrogen, progesterone, prolactin, and oxytocin, change dramatically during pregnancy and postpartum. Reproduction-associated hormones can affect adult hippocampal neurogenesis (AHN), thereby regulating mothers' behavior after delivery. In this review, we first briefly introduce the overall functional significance of AHN and the methods commonly used to explore this front. Then, we attempt to reconcile the changes of reproduction-associated hormones during pregnancy. We further update the findings on how reproduction-related hormones influence adult hippocampal neurogenesis. This review is aimed at emphasizing a potential role of AHN in reproduction-related brain plasticity and its neurobiological relevance to motherhood behavior.
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Affiliation(s)
- Lily Wan
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Rou-Jie Huang
- Medical Doctor Program, Xiangya School of Medicine, Central South University, Changsha, China
| | - Zhao-Hui Luo
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Jiao-e Gong
- Department of Neurology, Hunan Children's Hospital, Changsha 410007, China
| | - Aihua Pan
- Department of Anatomy and Neurobiology, Central South University Xiangya School of Medicine, Changsha, Hunan 410013, China
| | - Jim Manavis
- Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, SA, Australia 5000
| | - Xiao-Xin Yan
- Department of Anatomy and Neurobiology, Central South University Xiangya School of Medicine, Changsha, Hunan 410013, China
| | - Bo Xiao
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
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Decoding signaling pathways involved in prolactin-induced neuroprotection: A review. Front Neuroendocrinol 2021; 61:100913. [PMID: 33766566 DOI: 10.1016/j.yfrne.2021.100913] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 03/11/2021] [Accepted: 03/13/2021] [Indexed: 11/23/2022]
Abstract
It has been well recognized that prolactin (PRL), a pleiotropic hormone, has many functions in the brain, such as maternal behavior, neurogenesis, and neuronal plasticity, among others. Recently, it has been reported to have a significant role in neuroprotection against excitotoxicity. Glutamate excitotoxicity is a common alteration in many neurological and neurodegenerative diseases, leading to neuronal death. In this sense, several efforts have been made to decrease the progression of these pathologies. Despite various reports of PRL's neuroprotective effect against excitotoxicity, the signaling pathways that underlie this mechanism remain unclear. This review aims to describe the most recent and relevant studies on the molecular signaling pathways, particularly, PI3K/AKT, NF-κB, and JAK2/STAT5, which are currently under investigation and might be implicated in the molecular mechanisms that explain the PRL effects against excitotoxicity and neuroprotection. Remarkable neuroprotective effects of PRL might be useful in the treatment of some neurological diseases.
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Rodriguez-Chavez V, Moran J, Molina-Salinas G, Zepeda Ruiz WA, Rodriguez MC, Picazo O, Cerbon M. Participation of Glutamatergic Ionotropic Receptors in Excitotoxicity: The Neuroprotective Role of Prolactin. Neuroscience 2021; 461:180-193. [PMID: 33647379 DOI: 10.1016/j.neuroscience.2021.02.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 02/15/2021] [Accepted: 02/21/2021] [Indexed: 02/08/2023]
Abstract
Glutamate (Glu) is known as the main excitatory neurotransmitter in the central nervous system. It can trigger a series of processes ranging from synaptic plasticity to neurophysiological regulation. To carry out its functions, Glu acts via interaction with its cognate receptors, which are ligand-dependent. Glutamatergic receptors include ionotropic and metabotropic categories. The first allows the passage of ions through the postsynaptic membrane, while the metabotropic subtype activates signaling cascades through second messengers. It is well known that an excess of extracellular Glu concentration induces overstimulation of ionotropic glutamatergic receptors (iGluRs), causing the excitotoxicity phenomenon that leads to neuronal damage and cell death. Excitotoxicity plays a crucial role in different brain pathologies such as brain strokes, epilepsy and neurodegenerative disorders. However, until now, there are no effective neuroprotective compounds to prevent or rescue neurons from excitotoxicity. Thus, the continuous elucidation of the molecular mechanisms underlying excitotoxicity in order to prevent damage or neuronal death is necessary. Therefore, the aim of this review was to summarize the current knowledge regarding iGluRs, while describing their structures and molecular mechanisms of action, including their role in excitotoxicity, as well as the current strategies to reduce excitotoxic damage. Particularly, strategies mediated by prolactin, a somatotropin family-related hormone that displays a significant neuroprotective effect against both Glu and kainic acid-induced excitotoxicity in the hippocampus, are described. Finally, the role of prolactin as a possible molecule in the treatment of excitotoxicity in neurological diseases is discussed.
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Affiliation(s)
- V Rodriguez-Chavez
- Unidad de Investigación en Reproducción Humana, Instituto Nacional de Perinatología-Facultad de Química, Universidad Nacional Autónoma de México, CDMX, México 04510, Mexico
| | - J Moran
- División de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - G Molina-Salinas
- Unidad de Investigación en Reproducción Humana, Instituto Nacional de Perinatología-Facultad de Química, Universidad Nacional Autónoma de México, CDMX, México 04510, Mexico
| | - W A Zepeda Ruiz
- Unidad de Investigación en Reproducción Humana, Instituto Nacional de Perinatología-Facultad de Química, Universidad Nacional Autónoma de México, CDMX, México 04510, Mexico
| | - M C Rodriguez
- Instituto Nacional de Salud Pública, CISEI, Cuernavaca, Morelos 62100, Mexico
| | - O Picazo
- Escuela Superior de Medicina, Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón s/n, Col. Sto. Tomás, 11340 Ciudad de México, Mexico.
| | - M Cerbon
- Unidad de Investigación en Reproducción Humana, Instituto Nacional de Perinatología-Facultad de Química, Universidad Nacional Autónoma de México, CDMX, México 04510, Mexico.
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18
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Anagnostou I, Muñoz-Mayorga D, Morales T. Prolactin neuroprotective action against excitotoxic insult in the hippocampus of male mice. Peptides 2021; 135:170425. [PMID: 33053420 DOI: 10.1016/j.peptides.2020.170425] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 09/21/2020] [Accepted: 10/08/2020] [Indexed: 01/25/2023]
Abstract
Prolactin (PRL) is known to exert neuroprotective effects against excitotoxic damage in the hippocampus of female rats, both in vitro and in vivo. It is still unknown whether this effect can be seen in the male hippocampus and intracellular signaling mediating such action. To assess this, adult male CD-1 mice were subjected to excitotoxic damage with kainic acid (KA; i.c.v.), after a) no manipulation (control group), b) treatment with saline, and c) treatment with PRL (8 μg of PRL/100 μl of saline s.c.). Treatments consisted of one daily injection of the mentioned dosage for seven consecutive days until the day of the excitotoxic lesion. Neurodegeneration (Fluoro-Jade C), neuronal survival (NeuN) and astrogliosis (GFAP) markers were identified with immunohistochemistry in the CA1, CA3 and CA4 areas of the dorsal hippocampus, as well as PRL-related protein levels by Western blot in the whole hippocampus 48 h after excitotoxicity. Anatomical measurements revealed a preferential protective effect of PRL against excitotoxic damage in the CA3 hippocampal subfield, with lower levels of cell death and neurodegeneration, compared to controls. In CA4, the results were not conclusive, and no damage was observed in CA1 after KA administration. PRL treatment provoked an upregulation of active Akt, a well-known cell survival pathway, after KA administration. PRL also caused downregulation of active MAPK, independently of the excitotoxic damage. The present results indicate a neuroprotective role for PRL preferentially located in the CA3 area of the hippocampus of male mice, possibly mediated by Akt-related survival mechanisms.
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Affiliation(s)
- Ilektra Anagnostou
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, Qro., 76230, Mexico
| | - Daniel Muñoz-Mayorga
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, Qro., 76230, Mexico
| | - Teresa Morales
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, Qro., 76230, Mexico.
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Reyes-Mendoza J, Morales T. Prolactin treatment reduces kainic acid-induced gliosis in the hippocampus of ovariectomized female rats. Brain Res 2020; 1746:147014. [DOI: 10.1016/j.brainres.2020.147014] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 06/27/2020] [Accepted: 07/06/2020] [Indexed: 12/20/2022]
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20
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Sumption LA, Garay SM, John RM. Low serum placental lactogen at term is associated with postnatal symptoms of depression and anxiety in women delivering female infants. Psychoneuroendocrinology 2020; 116:104655. [PMID: 32247203 DOI: 10.1016/j.psyneuen.2020.104655] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 02/07/2020] [Accepted: 03/16/2020] [Indexed: 12/20/2022]
Abstract
BACKGROUND Placental endocrine insufficiency may increase the risk of depression and anxiety during pregnancy and/or after birth. This study investigated the association between serum human placental lactogen (hPL) and measures of perinatal mental health, accounting for selective serotonin-reuptake inhibitor (SSRI) usage. METHOD Caucasian women with singleton, term pregnancies recruited at their pre-surgical appointment prior to an elective caesarean section (ELCS) were studied. Serum hPL levels were measured by ELISA in maternal blood collected at the pre-surgical appointment. Depression and anxiety scores were derived from Edinburgh Postnatal Depression Scale (EPDS) and the trait subscale of the State-Trait Anxiety Inventory (STAI) questionnaires completed at recruitment and three postnatal time points. Data was analysed by unadjusted and adjusted multiple linear regression. RESULTS In adjusted linear regressions, term maternal serum hPL levels were negatively associated with postnatal EPDS and STAI score ten weeks postnatal for mothers who had girls (B= -.367, p = .022, 95% CI -.679, -.056; and B= -.776, p = .030, 95% CI -1.475, -.077 respectively). Excluding women prescribed SSRIs strengthened the relationship at 10 weeks and uncovered an earlier association between hPL and mood scores within one week of delivery (EPDS B= -.357, p = .041, 95 % CI -.698, -.015; and STAI B= -.737, p = .027, 95 % CI -1.387, -.086). In mothers who had boys, there were no associations between hPL and mood scores at any time point. CONCLUSION Low hPL at term associated with postnatal depression and anxiety symptoms exclusively in mothers of girls. Insufficiency in hPL may contribute to maternal mood symptoms.
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Affiliation(s)
- Lorna A Sumption
- Biomedicine Division, School of Biosciences, Cardiff University, Cardiff, CF10 3AX, United Kingdom
| | - Samantha M Garay
- Biomedicine Division, School of Biosciences, Cardiff University, Cardiff, CF10 3AX, United Kingdom
| | - Rosalind M John
- Biomedicine Division, School of Biosciences, Cardiff University, Cardiff, CF10 3AX, United Kingdom.
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21
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Aroña RM, Arnold E, Macías F, López-Casillas F, Clapp C, Martínez de la Escalera G. Vasoinhibin generation and effect on neuronal apoptosis in the hippocampus of late mouse embryos. Am J Physiol Regul Integr Comp Physiol 2020; 318:R760-R771. [PMID: 32048872 DOI: 10.1152/ajpregu.00286.2019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Morphological and behavioral evidence suggests that vasoinhibin is present in the central nervous system (CNS), triggering neuroendocrine and behavioral responses to stress. Moreover, vasoinhibin reduces neuronal survival and differentiation of primary sensory neurons of the peripheral nervous system. To address the functional role played by vasoinhibin at the CNS, and to better understand the underlying mechanisms involved in its actions, we treated primary cultured hippocampal neurons obtained from embryonic day 16 (E16) mice with a human recombinant vasoinhibin. We examined the resulting cellular changes, focusing on neuronal cell death, and explored the local generation of vasoinhibin within the hippocampus. Our results show that vasoinhibin significantly reduced neuronal cell density and increased immunoreactive activated caspase-3 and TUNEL-positive staining at 72, 16, and 24 h, respectively. Furthermore, vasoinhibin increased the expression of proapoptotic genes BAX, BAD, BIM, and PUMA and decreased that of the antiapoptotic gene BCL-2 at 24 h, as assessed by quantitative real-time reverse transcription-polymerase chain reaction. Vasoinhibin effects were blocked by coincubation with a vasoinhibin antibody or with prolactin. Immunoreactive bands consistent with vasoinhibin were observed in hippocampal extracts by Western blot analysis, and a prolactin standard was cleaved to vasoinhibin by a hippocampal lysate in a heat- and cathepsin D inhibitor pepstatin A-dependent fashion. Taken together, these data support the notion that vasoinhibin is locally produced by cathepsin D within the embryonic mouse hippocampus, a brain region that plays a critical role in emotional regulation, resulting in decreased neuronal cell viability via the activation of the intrinsic apoptosis pathway.
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Affiliation(s)
- Rodrigo M Aroña
- Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, Querétaro, Mexico
| | - Edith Arnold
- Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, Querétaro, Mexico.,CONACYT-Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, Querétaro, Mexico
| | - Fernando Macías
- Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, Querétaro, Mexico
| | - Fernando López-Casillas
- Instituto de Fisiología Celular, Universidad Nacional Autónoma de México (UNAM), Ciudad Universitaria, Mexico City, Mexico
| | - Carmen Clapp
- Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, Querétaro, Mexico
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Vermani B, Mukherjee S, Kumar G, Patnaik R. Prolactin attenuates global cerebral ischemic injury in rat model by conferring neuroprotection. Brain Inj 2020; 34:685-693. [DOI: 10.1080/02699052.2020.1726466] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Bhawna Vermani
- Electrophysiology Lab, School of Biomedical Engineering, Indian Institute of Technology (BHU), Varanasi, India
| | - Sumedha Mukherjee
- Electrophysiology Lab, School of Biomedical Engineering, Indian Institute of Technology (BHU), Varanasi, India
| | - Gaurav Kumar
- Electrophysiology Lab, School of Biomedical Engineering, Indian Institute of Technology (BHU), Varanasi, India
- School of Biological and Biomedical Sciences, Galgotias University, Greater Noida, Uttar Pradesh, India
| | - Ranjana Patnaik
- Electrophysiology Lab, School of Biomedical Engineering, Indian Institute of Technology (BHU), Varanasi, India
- School of Biological and Biomedical Sciences, Galgotias University, Greater Noida, Uttar Pradesh, India
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23
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Prolactin, Estradiol and Testosterone Differentially Impact Human Hippocampal Neurogenesis in an In Vitro Model. Neuroscience 2020; 454:15-39. [PMID: 31930958 PMCID: PMC7839971 DOI: 10.1016/j.neuroscience.2019.12.021] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 12/11/2019] [Accepted: 12/12/2019] [Indexed: 12/20/2022]
Abstract
Human hippocampal progenitor cells (HPCs) and tissue express classical sex hormone receptors. Prolactin does not impact human HPCs maintained in a proliferative state. Prolactin increases neuronal differentiation of human HPCs only in the short term. Estradiol and testosterone both increase the cell density of proliferating HPCs. Estradiol and testosterone have no observed effect on differentiating HPCs.
Previous studies have indicated that sex hormones such as prolactin, estradiol and testosterone may play a role in the modulation of adult hippocampal neurogenesis (AHN) in rodents and non-human primates, but so far there has been no investigation of their impact on human hippocampal neurogenesis. Here, we quantify the expression levels of the relevant receptors in human post-mortem hippocampal tissue and a human hippocampal progenitor cell (HPC) line. Secondly, we investigate how these hormones modulate hippocampal neurogenesis using a human in vitro cellular model. Human female HPCs were cultured with biologically relevant concentrations of either prolactin, estradiol or testosterone. Bromodeoxyuridine (BrdU) incorporation, immunocytochemistry (ICC) and high-throughput analyses were used to quantify markers determining cell fate after HPCs were either maintained in a proliferative state or allowed to differentiate in the presence of these hormones. In proliferating cells, estrogen and testosterone increased cell density but had no clear effect on markers of proliferation or cell death to account for this. In differentiating cells, a 3-day treatment of prolactin elicited a transient effect, whereby it increased the proportion of microtubule-associated protein 2 (MAP2)-positive and Doublecortin (DCX)-positive cells, but this effect was not apparent after 7-days. At this timepoint we instead observe a decrease in proliferation. Overall, our study demonstrates relatively minor, and possibly short-term effects of sex hormones on hippocampal neurogenesis in human cells. Further work will be needed to understand if our results differ to previous animal research due to species-specific differences, or whether it relates to limitations of our in vitro model.
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Tian RH, Bai Y, Li JY, Guo KM. Reducing PRLR expression and JAK2 activity results in an increase in BDNF expression and inhibits the apoptosis of CA3 hippocampal neurons in a chronic mild stress model of depression. Brain Res 2019; 1725:146472. [DOI: 10.1016/j.brainres.2019.146472] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 08/27/2019] [Accepted: 09/20/2019] [Indexed: 11/25/2022]
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25
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Tost M, Monreal JA, Armario A, Barbero JD, Cobo J, García-Rizo C, Bioque M, Usall J, Huerta-Ramos E, Soria V, Labad J. Targeting Hormones for Improving Cognition in Major Mood Disorders and Schizophrenia: Thyroid Hormones and Prolactin. Clin Drug Investig 2019; 40:1-14. [DOI: 10.1007/s40261-019-00854-w] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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26
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Anagnostou I, Morales T. Fatherhood diminishes the hippocampal damaging action of excitotoxic lesioning in mice. J Neuroendocrinol 2019; 31:e12783. [PMID: 31433881 DOI: 10.1111/jne.12783] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 08/01/2019] [Accepted: 08/16/2019] [Indexed: 11/29/2022]
Abstract
Parental experience imposes neuroplasticity in the hippocampus of females and males. In lactating rat dams, the hippocampus is protected against excitotoxic damage by kainic acid lesioning, although it is still unknown whether paternity can provide such protection to male rodents. To evaluate the protective effects of fatherhood against excitotoxic lesions, we paired male mice with females and co-housed them until the day of parturition (PPD0), when we randomly assigned them to two groups: (i) the pregnancy group (males housed individually overnight and injected i.c.v. with 100 ng per 1 μL of kainic acid or vehicle on PPD1) and (ii) the sire group (males housed with the dam and pups until PPD8, when injected i.c.v. after evaluation of parental behaviour). Individually housed virgin adult male mice formed the control group. Markers of neurodegeneration (NeuN, Fluoro-Jade C) and astrogliosis (glial fibrillary acidic protein) were evaluated in fixed cerebral tissue containing the dorsal CA1, CA3 and CA4 hippocampal subfields. The CA1 subfield did not suffer damage in any of the experimental groups. The sire group exhibited less neurodegeneration and astrogliosis in the CA3 and CA4 subfields compared to their respective controls, independently of the expression of parental behaviour. Western blot analysis was conducted for prolactin (PRL), PRL receptor and related intracellular pathways. Monomeric PRL was lower in the hippocampus of sires in the first week postpartum with a parallel rise of a 48-kDa dimerised isoform compared to virgin controls. The long isoform of PRL receptor did not change, and signal transducer and activator of transcription 5 (STAT5) was not detected in the hippocampus. However, a sustained rise in pAkt, a signalling molecule that participates in cell survival, was observed in the sire group. These results indicate that the hippocampus of sires housed with the dam and pups is less sensitive to neurotoxic injury, which might not be primarily regulated by PRL-STAT5-modulated mechanisms.
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Affiliation(s)
- Ilektra Anagnostou
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, México
| | - Teresa Morales
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, México
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27
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Hillerer KM, Slattery DA, Pletzer B. Neurobiological mechanisms underlying sex-related differences in stress-related disorders: Effects of neuroactive steroids on the hippocampus. Front Neuroendocrinol 2019; 55:100796. [PMID: 31580837 PMCID: PMC7115954 DOI: 10.1016/j.yfrne.2019.100796] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 09/26/2019] [Accepted: 09/27/2019] [Indexed: 12/19/2022]
Abstract
Men and women differ in their vulnerability to a variety of stress-related illnesses, but the underlying neurobiological mechanisms are not well understood. This is likely due to a comparative dearth of neurobiological studies that assess male and female rodents at the same time, while human neuroimaging studies often don't model sex as a variable of interest. These sex differences are often attributed to the actions of sex hormones, i.e. estrogens, progestogens and androgens. In this review, we summarize the results on sex hormone actions in the hippocampus and seek to bridge the gap between animal models and findings in humans. However, while effects of sex hormones on the hippocampus are largely consistent in animals and humans, methodological differences challenge the comparability of animal and human studies on stress effects. We summarise our current understanding of the neurobiological mechanisms that underlie sex-related differences in behavior and discuss implications for stress-related illnesses.
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Affiliation(s)
- Katharina M Hillerer
- Department of Obstetrics and Gynaecology, Salzburger Landeskrankenhaus (SALK), Paracelsus Medical University (PMU), Clinical Research Center Salzburg (CRCS), Salzburg, Austria.
| | - David A Slattery
- Department of Psychiatry, Psychosomatic Medicine and Psychotherapy, University Hospital, Goethe University, Frankfurt, Germany
| | - Belinda Pletzer
- Department of Psychology, University of Salzburg, Salzburg, Austria; Centre for Cognitive Neuroscience, University of Salzburg, Salzburg, Austria
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28
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Smeeth DM, Dima D, Jones L, Jones I, Craddock N, Owen MJ, Rietschel M, Maier W, Korszun A, Rice JP, Mors O, Preisig M, Uher R, Lewis CM, Thuret S, Powell TR. Polygenic risk for circulating reproductive hormone levels and their influence on hippocampal volume and depression susceptibility. Psychoneuroendocrinology 2019; 106:284-292. [PMID: 31039525 PMCID: PMC6597945 DOI: 10.1016/j.psyneuen.2019.04.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 04/04/2019] [Accepted: 04/09/2019] [Indexed: 12/13/2022]
Abstract
Altered reproductive hormone levels have been associated with the pathophysiology of depressive disorders and this risk may be imparted by their modulatory effect upon hippocampal structure and function. Currently it is unclear whether altered levels of reproductive hormones are causally associated with hippocampal volume reductions and the risk of depressive disorders. Here, we utilize genome-wide association study (GWAS) summary statistics from a GWAS focusing on reproductive hormones, consisting of 2913 individuals. Using this data, we generated polygenic risk scores (PRS) for estradiol, progesterone, prolactin and testosterone in the European RADIANT cohort consisting of 176 postpartum depression (PPD) cases (100% female, mean age: 41.6 years old), 2772 major depressive disorder (MDD) cases (68.6% female, mean age: 46.9 years old) and 1588 control participants (62.5% female, mean age: 42.4 years old), for which there was also a neuroimaging subset of 111 individuals (60.4% female, mean age: 50.0 years old). Only the best-fit PRS for estradiol showed a significant negative association with hippocampal volume, as well as many of its individual subfields; including the molecular layer and granule cell layer of the dentate gyrus, subiculum, CA1, CA2/3 and CA4 regions. Interestingly, several of these subfields are implicated in adult hippocampal neurogenesis. When we tested the same estradiol PRS for association with case-control status for PPD or MDD there was no significant relationship observed. Here, we provide evidence that genetic risk for higher plasma estradiol is negatively associated with hippocampal volume, but this does not translate into an increased risk of MDD or PPD. This work suggests that the relationship between reproductive hormones, the hippocampus, and depression is complex, and that there may not be a clear-cut pathway for etiology or risk moderation.
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Affiliation(s)
- Demelza M Smeeth
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Danai Dima
- Department of Psychology, School of Arts and Social Sciences, City, University of London, London, UK; Department of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Lisa Jones
- Institute of Health & Society, University of Worcester, Worcester, UK
| | - Ian Jones
- MRC Centre for Neuropsychiatric Genetics and Genomics, Neuroscience and Mental Health Research Institute, Cardiff University, Cardiff, UK
| | - Nick Craddock
- MRC Centre for Neuropsychiatric Genetics and Genomics, Neuroscience and Mental Health Research Institute, Cardiff University, Cardiff, UK
| | - Michael J Owen
- MRC Centre for Neuropsychiatric Genetics and Genomics, Neuroscience and Mental Health Research Institute, Cardiff University, Cardiff, UK
| | - Marcella Rietschel
- Department of Psychiatry, University of Bonn, Bonn, Germany; Division of Genetic Epidemiology in Psychiatry, Central Institute of Mental Health, Mannheim, Germany
| | - Wolfgang Maier
- Department of Psychiatry, University of Bonn, Bonn, Germany
| | - Ania Korszun
- Barts and The London Medical School, Queen Mary University of London, London, UK
| | - John P Rice
- Department of Psychiatry, Washington University, St. Louis, Missouri, USA
| | - Ole Mors
- Psychosis Research Unit, Aarhus University Hospital, Risskov, Denmark
| | - Martin Preisig
- University Hospital Center and University of Lausanne, Lausanne, Switzerland
| | - Rudolf Uher
- Department of Psychiatry, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Cathryn M Lewis
- Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Sandrine Thuret
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Timothy R Powell
- Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK.
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Coordinated transcriptional regulation by thyroid hormone and glucocorticoid interaction in adult mouse hippocampus-derived neuronal cells. PLoS One 2019; 14:e0220378. [PMID: 31348800 PMCID: PMC6660079 DOI: 10.1371/journal.pone.0220378] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 07/15/2019] [Indexed: 12/04/2022] Open
Abstract
The hippocampus is a well-known target of thyroid hormone (TH; e.g., 3,5,3’-triiodothyronine—T3) and glucocorticoid (GC; e.g., corticosterone—CORT) action. Despite evidence that TH and GC play critical roles in neural development and function, few studies have identified genes and patterns of gene regulation influenced by the interaction of these hormones at a genome-wide scale. In this study we investigated gene regulation by T3, CORT, and T3 + CORT in the mouse hippocampus-derived cell line HT-22. We treated cells with T3, CORT, or T3 + CORT for 4 hr before cell harvest and RNA isolation for microarray analysis. We identified 9 genes regulated by T3, 432 genes by CORT, and 412 genes by T3 + CORT. Among the 432 CORT-regulated genes, there were 203 genes that exhibited an altered CORT response in the presence of T3, suggesting that T3 plays a significant role in modulating CORT-regulated genes. We also found 80 genes synergistically induced, and 73 genes synergistically repressed by T3 + CORT treatment. We performed in silico analysis using publicly available mouse neuronal chromatin immunoprecipitation-sequencing datasets and identified a considerable number of synergistically regulated genes with TH receptor and GC receptor peaks mapping within 1 kb of chromatin marks indicative of hormone-responsive enhancer regions. Functional annotation clustering of synergistically regulated genes reveal the relevance of proteasomal-dependent degradation, neuroprotective effect of growth hormones, and neuroinflammatory responses as key pathways to how TH and GC may coordinately influence learning and memory. Taken together, our transcriptome data represents a promising exploratory dataset for further study of common molecular mechanisms behind synergistic TH and GC gene regulation, and identify specific genes and their role in processes mediated by cross-talk between the thyroid and stress axes in a mammalian hippocampal model system.
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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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Plasma prolactin levels are associated with the severity of illness in drug-naive first-episode psychosis female patients. Arch Womens Ment Health 2019; 22:367-373. [PMID: 30097769 DOI: 10.1007/s00737-018-0899-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Accepted: 08/02/2018] [Indexed: 12/11/2022]
Abstract
Patients with schizophrenia frequently present hyperprolactinemia as a consequence of antipsychotic treatment. However, an increase in circulating prolactin levels has also been shown in patients without previous treatment. Our objective was to compare prolactin levels between antipsychotic-naive first-episode psychosis (AN-FEP) patients and healthy controls (HC). As part of an FEP program (Programa Asistencial Fases Iniciales de Psicosis [PAFIP]), 270 AN-FEP patients and 153 HC were eligible for this study. Serum prolactin levels were measured by an automated immunochemiluminescent assay. Subjects' sex and having an AN-FEP diagnosis both had an effect on prolactin levels, with higher levels in women than in men, and in AN-FEP patients than in HC. Moreover, plasma prolactin levels showed a negative correlation with the SAPS scores in AN-FEP female patients. AN-FEP patients have increased levels of prolactin, which might be stress-induced. This, together with the association of higher prolactin with a lower severity of the disease, suggests that prolactin might play a neuroprotective role, especially in women.
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Kandasamy M, Yesudhas A, Poornimai Abirami GP, Radhakrishnan RK, Roshan SA, Johnson E, Ravichandran VR, Biswas A, Shanmugaapriya S, Anusuyadevi M, Aigner L. Genetic reprogramming of somatic cells into neuroblasts through a co-induction of the doublecortin gene along the Yamanaka factors: A promising approach to model neuroregenerative disorders. Med Hypotheses 2019; 127:105-111. [PMID: 31088631 DOI: 10.1016/j.mehy.2019.04.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 03/28/2019] [Accepted: 04/11/2019] [Indexed: 12/25/2022]
Abstract
Neural stem cell (NSC) mediated adult neurogenesis represents the regenerative plasticity of the brain. The functionality of the neurogenic process appears to be operated by neuroblasts, the multipotent immature neuronal population of the adult brain. While neuroblasts have been realized to play a major role in synaptic remodeling and immunogenicity, neurodegenerative disorders have been characterized by failure in the terminal differentiation, maturation, integration and survival of newborn neuroblasts. Advancement in understanding the impaired neuroregenerative process along the neuropathological conditions has currently been limited by lack of an appropriate experimental model of neuroblasts. The genetic reprogramming of somatic cells into pluripotent state offers a potential strategy for the experimental modeling of brain disorders. Thus, the induced pluripotent stem cell (iPSC) based direct reprogramming of somatic cells into neuroblasts would represent a potential tool to understand the regenerative biology of the adult brain. Therefore, this concise article discusses the significance of iPSCs, the functional roles of neuroblasts in the adult brain and provides a research hypothesis for the direct reprogramming of somatic cells into neuroblasts through the co-induction of a potential proneurogenic marker, the doublecortin (DCX) gene along with the Yamanaka factors. The proposed cellular model of adult neurogenesis may provide us with further insights into neuropathogenesis of many neurodegenerative disorders and will provide a potential experimental platform for diagnostic, drug discovery and regenerative therapeutic strategies.
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Affiliation(s)
- Mahesh Kandasamy
- Laboratory of Stem Cells and Neuroregeneration, Department of Animal Science, School of Life Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India; School of Life Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India; UGC-Faculty Recharge Programme (UGC-FRP), University Grants Commission, New Delhi, India.
| | - Ajisha Yesudhas
- Laboratory of Stem Cells and Neuroregeneration, Department of Animal Science, School of Life Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India
| | - G P Poornimai Abirami
- School of Life Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India
| | - Risna Kanjirassery Radhakrishnan
- Laboratory of Stem Cells and Neuroregeneration, Department of Animal Science, School of Life Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India
| | - Syed Aasish Roshan
- Molecular Gerontology Laboratory, Department of Biochemistry, School of Life Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India
| | - Esther Johnson
- Laboratory of Stem Cells and Neuroregeneration, Department of Animal Science, School of Life Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India
| | - Vijaya Roobini Ravichandran
- Laboratory of Stem Cells and Neuroregeneration, Department of Animal Science, School of Life Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India
| | - Abir Biswas
- Molecular Gerontology Laboratory, Department of Biochemistry, School of Life Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India
| | | | - Muthuswamy Anusuyadevi
- School of Life Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India; Molecular Gerontology Laboratory, Department of Biochemistry, School of Life Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India
| | - Ludwig Aigner
- Institute of Molecular Regenerative Medicine, Paracelsus Medical University, Salzburg, Austria; Spinal Cord Injury and Tissue Regeneration Center, Salzburg, Paracelsus Medical University, Salzburg, Austria.
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33
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Waugh DT. Fluoride Exposure Induces Inhibition of Sodium/Iodide Symporter (NIS) Contributing to Impaired Iodine Absorption and Iodine Deficiency: Molecular Mechanisms of Inhibition and Implications for Public Health. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:E1086. [PMID: 30917615 PMCID: PMC6466022 DOI: 10.3390/ijerph16061086] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 03/19/2019] [Accepted: 03/21/2019] [Indexed: 12/24/2022]
Abstract
The sodium iodide symporter (NIS) is the plasma membrane glycoprotein that mediates active iodide transport in the thyroid and other tissues, such as the salivary, gastric mucosa, rectal mucosa, bronchial mucosa, placenta and mammary glands. In the thyroid, NIS mediates the uptake and accumulation of iodine and its activity is crucial for the development of the central nervous system and disease prevention. Since the discovery of NIS in 1996, research has further shown that NIS functionality and iodine transport is dependent on the activity of the sodium potassium activated adenosine 5'-triphosphatase pump (Na+, K+-ATPase). In this article, I review the molecular mechanisms by which F inhibits NIS expression and functionality which in turn contributes to impaired iodide absorption, diminished iodide-concentrating ability and iodine deficiency disorders. I discuss how NIS expression and activity is inhibited by thyroglobulin (Tg), tumour necrosis factor alpha (TNF-α), transforming growth factor beta 1 (TGF-β1), interleukin 6 (IL-6) and Interleukin 1 beta (IL-1β), interferon-γ (IFN-γ), insulin like growth factor 1 (IGF-1) and phosphoinositide 3-kinase (PI3K) and how fluoride upregulates expression and activity of these biomarkers. I further describe the crucial role of prolactin and megalin in regulation of NIS expression and iodine homeostasis and the effect of fluoride in down regulating prolactin and megalin expression. Among many other issues, I discuss the potential conflict between public health policies such as water fluoridation and its contribution to iodine deficiency, neurodevelopmental and pathological disorders. Further studies are warranted to examine these associations.
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Affiliation(s)
- Declan Timothy Waugh
- EnviroManagement Services, 11 Riverview, Doherty's Rd, Bandon, Co. Cork, P72 YF10, Ireland.
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34
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Leem YH, Park JS, Chang H, Park J, Kim HS. Exercise Prevents Memory Consolidation Defects Via Enhancing Prolactin Responsiveness of CA1 Neurons in Mice Under Chronic Stress. Mol Neurobiol 2019; 56:6609-6625. [DOI: 10.1007/s12035-019-1560-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 03/13/2019] [Indexed: 12/21/2022]
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35
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Ortiz-Pérez A, Limón-Morales O, Rojas-Castañeda J, Cerbón M, Picazo O. Prolactin prevents the kainic acid-induced neuronal loss in the rat hippocampus by inducing prolactin receptor and putatively increasing the VGLUT1 overexpression. Neurosci Lett 2019; 694:116-123. [DOI: 10.1016/j.neulet.2018.11.052] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 11/24/2018] [Accepted: 11/26/2018] [Indexed: 01/08/2023]
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36
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WANG B, LI L, HE Z, WANG L, ZHANG S, QIAO H, JIA R, TAI F. Effects of reproductive experience on paternal behavior, levels of testosterone, prolactin in serum and dendritic spines in medial prefrontal cortex of mandarin voles. Integr Zool 2018; 13:711-722. [DOI: 10.1111/1749-4877.12354] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Bo WANG
- Institute of Brain and Behavioral Sciences, College of Life Sciences; Shaanxi Normal University; Xi'an Shaanxi China
- Genetic Engineering Laboratory, College of Biological and Environmental engineering; Xi'an University; Xi'an Shaanxi China
| | - Laifu LI
- Institute of Brain and Behavioral Sciences, College of Life Sciences; Shaanxi Normal University; Xi'an Shaanxi China
| | - Zhixiong HE
- Institute of Brain and Behavioral Sciences, College of Life Sciences; Shaanxi Normal University; Xi'an Shaanxi China
| | - Limin WANG
- Institute of Brain and Behavioral Sciences, College of Life Sciences; Shaanxi Normal University; Xi'an Shaanxi China
| | - Siyi ZHANG
- Institute of Brain and Behavioral Sciences, College of Life Sciences; Shaanxi Normal University; Xi'an Shaanxi China
| | - Hui QIAO
- Institute of Brain and Behavioral Sciences, College of Life Sciences; Shaanxi Normal University; Xi'an Shaanxi China
| | - Rui JIA
- Institute of Brain and Behavioral Sciences, College of Life Sciences; Shaanxi Normal University; Xi'an Shaanxi China
| | - Fadao TAI
- Institute of Brain and Behavioral Sciences, College of Life Sciences; Shaanxi Normal University; Xi'an Shaanxi China
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37
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Anagnostou I, Reyes-Mendoza J, Morales T. Glial cells as mediators of protective actions of prolactin (PRL) in the CNS. Gen Comp Endocrinol 2018; 265:106-110. [PMID: 29378204 DOI: 10.1016/j.ygcen.2018.01.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 01/11/2018] [Accepted: 01/24/2018] [Indexed: 12/16/2022]
Abstract
Prolactin (PRL) is a hormone with multiple actions in the central nervous system (CNS) spanning from physiology to pathology. PRL exerts different actions through its receptors that can be found in both neurons and glial cells (astrocytes, microglia and oligodendrocytes) of the brain. Even though its effects during pregnancy and lactation, stress, anxiety, and depression are well studied, recent work on this hormone has brought to light a new role of PRL: that of a protective agent against brain damage and, consequently, against neurodegeneration. The mechanisms through which this protection takes place have not been fully elucidated; however, neurogenesis and anti-apoptosis are some of the plausible mechanisms that could mediate this effect. There is substantial information that implies the involvement of glial activation in this PRL effect, as shown in various models of brain damage. Taking into account glial cell dynamics and actions in various pathological conditions, combined with the neuroprotective effect of PRL, we consider of importance the revision of all the information about the interaction between these two cell types, as it will provide comprehensive knowledge about this new target of PRL against neuropathology.
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Affiliation(s)
- Ilektra Anagnostou
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, Mexico
| | - Julio Reyes-Mendoza
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, Mexico
| | - Teresa Morales
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, Mexico.
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38
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Medina J, Workman JL. Maternal experience and adult neurogenesis in mammals: Implications for maternal care, cognition, and mental health. J Neurosci Res 2018; 98:1293-1308. [DOI: 10.1002/jnr.24311] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 07/07/2018] [Accepted: 07/11/2018] [Indexed: 01/02/2023]
Affiliation(s)
- Joanna Medina
- Department of Psychology and the Center for Neuroscience Research University at Albany, State University of New York New York
| | - Joanna L. Workman
- Department of Psychology and the Center for Neuroscience Research University at Albany, State University of New York New York
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39
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Carretero J, Sánchez-Robledo V, Carretero-Hernández M, Catalano-Iniesta L, García-Barrado MJ, Iglesias-Osma MC, Blanco EJ. Prolactin system in the hippocampus. Cell Tissue Res 2018; 375:193-199. [DOI: 10.1007/s00441-018-2858-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 05/11/2018] [Indexed: 12/17/2022]
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40
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Muñoz-Mayorga D, Guerra-Araiza C, Torner L, Morales T. Tau Phosphorylation in Female Neurodegeneration: Role of Estrogens, Progesterone, and Prolactin. Front Endocrinol (Lausanne) 2018; 9:133. [PMID: 29643836 PMCID: PMC5882780 DOI: 10.3389/fendo.2018.00133] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 03/14/2018] [Indexed: 01/01/2023] Open
Abstract
Sex differences are important to consider when studying different psychiatric, neurodevelopmental, and neurodegenerative disorders, including Alzheimer's disease (AD). These disorders can be affected by dimorphic changes in the central nervous system and be influenced by sex-specific hormones and neuroactive steroids. In fact, AD is more prevalent in women than in men. One of the main characteristics of AD is the formation of neurofibrillary tangles, composed of the phosphoprotein Tau, and neuronal loss in specific brain regions. The scope of this work is to review the existing evidence on how a set of hormones (estrogen, progesterone, and prolactin) affect tau phosphorylation in the brain of females under both physiological and pathological conditions.
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Affiliation(s)
- Daniel Muñoz-Mayorga
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, Mexico
| | - Christian Guerra-Araiza
- Unidad de Investigación Médica en Farmacología, Hospital de Especialidades, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | - Luz Torner
- Centro de Investigación Biomédica de Michoacán, Instituto Mexicano del Seguro Social, Morelia, Mexico
| | - Teresa Morales
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, Mexico
- *Correspondence: Teresa Morales,
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41
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Shuvaev SA, Lazutkin AA, Kedrov AV, Anokhin KV, Enikolopov GN, Koulakov AA. DALMATIAN: An Algorithm for Automatic Cell Detection and Counting in 3D. Front Neuroanat 2017; 11:117. [PMID: 29311849 PMCID: PMC5732941 DOI: 10.3389/fnana.2017.00117] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 11/27/2017] [Indexed: 01/09/2023] Open
Abstract
Current 3D imaging methods, including optical projection tomography, light-sheet microscopy, block-face imaging, and serial two photon tomography enable visualization of large samples of biological tissue. Large volumes of data obtained at high resolution require development of automatic image processing techniques, such as algorithms for automatic cell detection or, more generally, point-like object detection. Current approaches to automated cell detection suffer from difficulties originating from detection of particular cell types, cell populations of different brightness, non-uniformly stained, and overlapping cells. In this study, we present a set of algorithms for robust automatic cell detection in 3D. Our algorithms are suitable for, but not limited to, whole brain regions and individual brain sections. We used watershed procedure to split regional maxima representing overlapping cells. We developed a bootstrap Gaussian fit procedure to evaluate the statistical significance of detected cells. We compared cell detection quality of our algorithm and other software using 42 samples, representing 6 staining and imaging techniques. The results provided by our algorithm matched manual expert quantification with signal-to-noise dependent confidence, including samples with cells of different brightness, non-uniformly stained, and overlapping cells for whole brain regions and individual tissue sections. Our algorithm provided the best cell detection quality among tested free and commercial software.
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Affiliation(s)
- Sergey A Shuvaev
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, United States.,Brain Stem Cell Laboratory, NBIC, Moscow Institute of Physics and Technology, Moscow, Russia
| | - Alexander A Lazutkin
- Brain Stem Cell Laboratory, NBIC, Moscow Institute of Physics and Technology, Moscow, Russia.,Center for Developmental Genetics and Department of Anesthesiology, Stony Brook University, Stony Brook, NY, United States.,P.K. Anokhin Institute of Normal Physiology, Moscow, Russia
| | - Alexander V Kedrov
- Brain Stem Cell Laboratory, NBIC, Moscow Institute of Physics and Technology, Moscow, Russia.,P.K. Anokhin Institute of Normal Physiology, Moscow, Russia
| | - Konstantin V Anokhin
- P.K. Anokhin Institute of Normal Physiology, Moscow, Russia.,National Research Center "Kurchatov Institute", Moscow, Russia
| | - Grigori N Enikolopov
- Brain Stem Cell Laboratory, NBIC, Moscow Institute of Physics and Technology, Moscow, Russia.,Center for Developmental Genetics and Department of Anesthesiology, Stony Brook University, Stony Brook, NY, United States
| | - Alexei A Koulakov
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, United States
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42
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Winterdahl M, Miani A, Vercoe MJH, Ciovica A, Uber-Zak L, Rask CU, Zak PJ. Vulnerability to psychogenic non-epileptic seizures is linked to low neuropeptide Y levels. Stress 2017; 20:589-597. [PMID: 28927333 DOI: 10.1080/10253890.2017.1378638] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Abstract
Psychogenic non-epileptic seizures (PNES) is a conversion disorder that reflects underlying psychological distress. Female patients with PNES often present with a history of prolonged stressors, especially sexual abuse. In the current study, we studied the relationship between neuropeptide Y (NPY) and PNES symptoms in women with a history of sexual abuse. NPY has been associated with resilience to stress and we hypothesized that low levels would increase the extent and severity of PNES symptoms in this patient population. Serum levels of NPY, and related hormones were measured in fifteen female PNES patients and sixty female controls. PNES patients reported more severe abuse histories, feeling of abandonment, and decreased perception of quality of life than controls. Importantly, they also had lower NPY levels. Our analysis indicates that low levels of NPY in PNES may confer greater vulnerability to exhibit seizure-like symptoms and lower quality of life.
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Affiliation(s)
- Michael Winterdahl
- a Department of Nuclear Medicine and PET Center , Aarhus University , Aarhus , Denmark
| | - Alessandro Miani
- a Department of Nuclear Medicine and PET Center , Aarhus University , Aarhus , Denmark
| | - Moana J H Vercoe
- b Center for Neuroeconomics Studies , Claremont Graduate University , Claremont , CA , USA
| | - Antonia Ciovica
- c Department of Psychiatry , Loma Linda University School of Medicine , Loma Linda , CA , USA
| | - Lori Uber-Zak
- d Department of Neurology , Loma Linda University Medical Center , Loma Linda , CA , USA
| | - Charlotte Ulrikka Rask
- e Research Clinic for Functional Disorders and Psychosomatics , Aarhus University Hospital , Aarhus , Denmark
- f Child and Adolescent Psychiatry Center , Aarhus University Hospital , Aarhus , Denmark
| | - Paul J Zak
- b Center for Neuroeconomics Studies , Claremont Graduate University , Claremont , CA , USA
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43
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Home sweet home: the neural stem cell niche throughout development and after injury. Cell Tissue Res 2017; 371:125-141. [PMID: 28776186 DOI: 10.1007/s00441-017-2658-0] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 05/29/2017] [Indexed: 12/26/2022]
Abstract
Neural stem cells and their progeny reside in two distinct neurogenic niches within the mammalian brain: the subventricular zone and the dentate gyrus. The interplay between the neural stem cells and the niche in which they reside can have significant effects on cell kinetics and neurogenesis. A comprehensive understanding of the changes to the niche that occur through postnatal development and aging, as well as following injury, is relevant for developing therapeutics and interventions to promote neural repair. We discuss changes that occur within the neural stem and progenitor cell populations, the vasculature, extracellular matrix, microglia, and secreted proteins through aging which impact cell behavior within the neurogenic niches. We examine neural precursor cell and niche responses to injury in neonatal hypoxia-ischemia, juvenile cranial irradiation, and adult stroke. This review examines the interplay between the niche and stem cell behavior through aging and following injury as a means to understand intrinsic and extrinsic factors that regulate neurogenesis in vivo.
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44
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Cabrera-Reyes EA, Limón-Morales O, Rivero-Segura NA, Camacho-Arroyo I, Cerbón M. Prolactin function and putative expression in the brain. Endocrine 2017. [PMID: 28634745 DOI: 10.1007/s12020-017-1346-x] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
INTRODUCTION Prolactin is a peptide hormone mainly synthetized and secreted by the anterior pituitary gland, but also by extrapituitary tissues, such as mammary gland, decidua, prostate, skin, and possibly the brain. Similarly, prolactin receptor is expressed in the pituitary gland, many peripheral tissues, and in contrast to prolactin, its receptor has been consistently detected in several brain regions, such as cerebral cortex, olfactory bulb, hypothalamus, hippocampus, amygdala, among others. Classically, prolactin function has been related to the stimulation of lactogenesis and galactopoiesis, however, it is well known that prolactin induces a wide range of functions in different brain areas. PURPOSE The aim of this review is to summarize recent reports on prolactin and prolactin receptor synthesis and localization, as well as recapitulate both the classic functions attributed to this hormone in the brain and the recently described functions such as neurogenesis, neurodevelopment, sleep, learning and memory, and neuroprotection. CONCLUSION The distribution and putative expression of prolactin and its receptors in several neuronal tissues suggests that this hormone has pleiotropic functions in the brain.
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Affiliation(s)
- Erika Alejandra Cabrera-Reyes
- Unidad de Investigación en Reproducción Humana Instituto Nacional de Perinatología-Facultad de Química, Universidad Nacional Autónoma de México. CDMX, Mexico, Mexico
| | - Ofelia Limón-Morales
- Unidad de Investigación en Reproducción Humana Instituto Nacional de Perinatología-Facultad de Química, Universidad Nacional Autónoma de México. CDMX, Mexico, Mexico
| | - Nadia Alejandra Rivero-Segura
- Unidad de Investigación en Reproducción Humana Instituto Nacional de Perinatología-Facultad de Química, Universidad Nacional Autónoma de México. CDMX, Mexico, Mexico
| | - Ignacio Camacho-Arroyo
- Unidad de Investigación en Reproducción Humana Instituto Nacional de Perinatología-Facultad de Química, Universidad Nacional Autónoma de México. CDMX, Mexico, Mexico
| | - Marco Cerbón
- Unidad de Investigación en Reproducción Humana Instituto Nacional de Perinatología-Facultad de Química, Universidad Nacional Autónoma de México. CDMX, Mexico, Mexico.
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Kubo KY, Murabayashi C, Kotachi M, Suzuki A, Mori D, Sato Y, Onozuka M, Azuma K, Iinuma M. Tooth loss early in life suppresses neurogenesis and synaptophysin expression in the hippocampus and impairs learning in mice. Arch Oral Biol 2017; 74:21-27. [DOI: 10.1016/j.archoralbio.2016.11.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 11/01/2016] [Accepted: 11/03/2016] [Indexed: 11/25/2022]
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Sakamoto Y, Ogawa T, Ogawa M, Matsuo Y, Hashikawa N, Hashikawa N. [Effects of 15-day chronic stress on behavior and neurological changes in the hippocampus of ICR mice]. YAKUGAKU ZASSHI 2017; 135:151-8. [PMID: 25743912 DOI: 10.1248/yakushi.14-00180] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Numerous rodent models of depression have been reported, most requiring a long experimental period and significant effort. We explored a new potential mouse model for depression by investigating whether exposure to a 15-day chronic stress paradigm could induce depression-like behavior in ICR mice. Animals in the stress-exposed groups were subjected to 3 h of restraint while immersed in a 28°C water bath daily for 15 consecutive days. Immobility time in the forced swim test was increased in the chronic stress-exposed mice compared with the controls. Serum corticosterone levels were also much higher in the stressed mice than in the control mice. Hippocampal cell survival (BrdU-positive cells) and neurotrophic factor (NGF, TrkA) mRNA levels were significantly decreased in the chronic stress-exposed mice compared with controls. Administration of the anti-depressant drugs clomipramine (20 mg/kg/d) or imipramine (30 mg/kg/d) did not change the immobility time in the forced swim test, but treatment with lithium (100 mg/kg/d) did result in slight improvement. These results suggest that this 15-day chronic stress paradigm can induce depression-like behavior and neurological changes, in a short time and with minimal effort, facilitating the assessment of treatments for depression.
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Queiroz AM, Carvalho AB, Censi LL, Cardoso CL, Leite-Panissi CR, da Silva RAB, de Carvalho FK, Nelson-Filho P, da Silva LAB. Stress and anxiety in children after the use of computerized dental anesthesia. Braz Dent J 2017. [PMID: 26200158 DOI: 10.1590/0103-6440201300211] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The aim of this study was to evaluate the transitory stress levels and the anxiety state in children submitted to conventional and computerized dental anesthesia. Twenty children (7 to 12 years) were randomly assigned to receive conventional and computerized dental anesthesia. To investigate the hypothesis that transitory stress could be lower after using computerized anesthesia compared to conventional anesthesia, cortisol levels in saliva were measured before and after each technique. Anxiety was also evaluated individually by answering the State-Trait Anxiety Inventory for Children (STAIC). Numerical data were analyzed statistically by the Mann-Whitney non-parametric test (5% significance level). Salivary cortisol levels increased in 8 (40%) patients after conventional anesthesia and in 9 (45%) patients after computerized anesthesia, with no statistically significant difference between the two types (p=0.34). In the same way, no statistically significant difference was found between the techniques (p=0.39) related to the psychological analysis based on the STAIC scores. Local anesthesia using either conventional anesthesia or a computerized delivery system produced similar level of stress/anxiety in pediatric patients, using both quantitative and qualitative analyses.
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Affiliation(s)
- Alexandra M Queiroz
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - Ariany B Carvalho
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - Laís L Censi
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - Carmen L Cardoso
- Department of Psychology and Education, School of Philosophy, Sciences and Letters of Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - Christie R Leite-Panissi
- Department of Morphology, Phisiology and Basic Pathology, School of Dentistry of Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - Raquel Assed Bezerra da Silva
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - Fabricio Kitazono de Carvalho
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - Paulo Nelson-Filho
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - Lea Assed Bezerra da Silva
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
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Acute stress enhances the expression of neuroprotection- and neurogenesis-associated genes in the hippocampus of a mouse restraint model. Oncotarget 2017; 7:8455-65. [PMID: 26863456 PMCID: PMC4890979 DOI: 10.18632/oncotarget.7225] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2015] [Accepted: 01/26/2016] [Indexed: 12/16/2022] Open
Abstract
Stress arises from an external demand placed on an organism that triggers physiological, cognitive and behavioural responses in order to cope with that request. It is thus an adaptive response useful for the survival of an organism. The objective of this study was to identify and characterize global changes in gene expression in the hippocampus in response to acute stress stimuli, by employing a mouse model of short-term restraint stress. In our experimental design mice were subjected to a one time exposure of restraint stress and the regulation of gene expression in the hippocampus was examined 3, 12 and 24 hours thereafter. Microarray analysis revealed that mice which had undergone acute restraint stress differed from non-stressed controls in global hippocampal transcriptional responses. An up-regulation of transcripts contributing directly or indirectly to neurogenesis and neuronal protection including, Ttr, Rab6, Gh, Prl, Ndufb9 and Ndufa6, was observed. Systems level analyses revealed a significant enrichment for neurogenesis, neuron morphogenesis- and cognitive functions-related biological process terms and pathways. This work further supports the hypothesis that acute stress mediates a positive action on the hippocampus favouring the formation and the preservation of neurons, which will be discussed in the context of current data from the literature.
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Tzeng WY, Wu HH, Wang CY, Chen JC, Yu L, Cherng CG. Sex Differences in Stress and Group Housing Effects on the Number of Newly Proliferated Cells and Neuroblasts in Middle-Aged Dentate Gyrus. Front Behav Neurosci 2017; 10:249. [PMID: 28119581 PMCID: PMC5220061 DOI: 10.3389/fnbeh.2016.00249] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2016] [Accepted: 12/19/2016] [Indexed: 11/13/2022] Open
Abstract
Sex differences in stress and coping responses have been frequently documented in aged people, while whether such differences in aged people may appear at the middle age are unknown. This study was undertaken to study the impact of acute stress and social interaction on early neurogenesis in the dentate gyrus (DG) and hippocampus-related memory in two sexes of middle-aged mice. The number of newly proliferated cells, neuroblasts in DG, the object recognition and location memory in 9-month-old male and female C57BL/6N mice were assessed under baseline conditions as well as following an acute stressor regimen and group housing. Three conspecific companions, serving as "the housing group," were used to model the social interaction throughout the stressor regimen. Males had lower numbers of newly proliferated cells and neuroblasts under baseline conditions as compared to females. The stressor regimen caused rapid decreases in the number of newly proliferated cells and neuroblasts in female DG but no obvious changes were observed in male DG. Group housing, regardless of companions' age, prevented the stress-induced decreases in the number of newly proliferated cells and neuroblasts in female DG. In contrast, the presence of young or age-matched companions potentiated the stress effect in males by decreasing the number of newly proliferated cells and neuroblasts. Finally, neither the stressor regimen nor group housing affected mouse performances in the object recognition and location memory in either sex. These findings, taken together, provide evidence to support a notion that middle-aged females appear to demonstrate more stress susceptibility on early neurogenesis in DG as compared to middle-aged males, although the hippocampus-related memory performances are comparable and not affected by stress in these males and females. Experiencing stress, middle-aged females are more prone to benefit from social interaction as compared to middle-aged males in this regard. We suggest, accordingly, that involving social interaction may afford a therapeutic advance in preventing stress-produced decreases in early neurogenesis in middle-aged females' DG.
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Affiliation(s)
- Wen-Yu Tzeng
- Department of Physiology, National Cheng Kung University College of Medicine Tainan, Taiwan
| | - Hsin-Hua Wu
- Department of Physiology, National Cheng Kung University College of Medicine Tainan, Taiwan
| | - Ching-Yi Wang
- Institute of Basic Medical Sciences, National Cheng Kung University College of Medicine Tainan, Taiwan
| | - Jin-Chung Chen
- Graduate Institute of Biomedical Sciences, Chang Gung University Taoyuan, Taiwan
| | - Lung Yu
- Department of Physiology, National Cheng Kung University College of MedicineTainan, Taiwan; Institute of Basic Medical Sciences, National Cheng Kung University College of MedicineTainan, Taiwan
| | - Chianfang G Cherng
- Department of Health Psychology, Chang Jung Christian University Tainan, Taiwan
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Orczyk JJ, Batka R, Gore A, Maio-Lexa M, Kulkarni A, Garraghty PE. Female rat transcriptome response to infraorbital nerve transection differs from that of males: RNA-seq. J Comp Neurol 2017; 525:140-150. [PMID: 27224679 DOI: 10.1002/cne.24045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Revised: 05/20/2016] [Accepted: 05/23/2016] [Indexed: 11/06/2022]
Abstract
The effects of infraorbital nerve (ION) transection on gene expression in the adult female rat barrel cortex were investigated using RNA sequencing. After a 24-hour survival duration, 28 genes were differentially regulated by ION transection. Differentially expressed genes suggest microglial activity, increased retrograde ciliary transport, and a decrease in inhibition. These changes may be functionally comparable to changes in the male barrel cortex, where changes in genes related to morphology, neuronal activity, and neuronal excitability were observed. However, the patterns in changes in gene expression are vastly different between male and female rats. The results strongly caution against the practice of generalizing data from one sex to both sexes. This cautionary note has potentially profound implications for a range of research lines, including substance abuse and stress, both research domains in which subjects have been predominantly males. Future research needs to employ sex as a classification variable, as sex differences can generally be expected. Future research is also needed to confirm that changes in gene expression observed with RNA-seq correlate with changes in protein expression. J. Comp. Neurol. 525:140-150, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- John J Orczyk
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, Indiana, USA
| | - Richard Batka
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, Indiana, USA
| | - Ashleigh Gore
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, Indiana, USA
| | - Michelena Maio-Lexa
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, Indiana, USA
| | - Akhil Kulkarni
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, Indiana, USA
| | - Preston E Garraghty
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, Indiana, USA.,Program in Neuroscience, Indiana University, Bloomington, Indiana, USA
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