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Valle A, Castillo P, García-Rodríguez A, Palou A, Palou M, Picó C. Brain-Derived Neurotrophic Factor as a Potential Mediator of the Beneficial Effects of Myo-Inositol Supplementation during Suckling in the Offspring of Gestational-Calorie-Restricted Rats. Nutrients 2024; 16:980. [PMID: 38613013 PMCID: PMC11013066 DOI: 10.3390/nu16070980] [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: 02/28/2024] [Revised: 03/21/2024] [Accepted: 03/23/2024] [Indexed: 04/14/2024] Open
Abstract
This study aims to investigate the potential mechanisms underlying the protective effects of myo-inositol (MI) supplementation during suckling against the detrimental effects of fetal energy restriction described in animal studies, particularly focusing on the potential connections with BDNF signaling. Oral physiological doses of MI or the vehicle were given daily to the offspring of control (CON) and 25%-calorie-restricted (CR) pregnant rats during suckling. The animals were weaned and then fed a standard diet until 5 months of age, when the diet was switched to a Western diet until 7 months of age. At 25 days and 7 months of age, the plasma BDNF levels and mRNA expression were analyzed in the hypothalamus and three adipose tissue depots. MI supplementation, especially in the context of gestational calorie restriction, promoted BDNF secretion and signaling at a juvenile age and in adulthood, which was more evident in the male offspring of the CR dams than in females. Moreover, the CR animals supplemented with MI exhibited a stimulated anorexigenic signaling pathway in the hypothalamus, along with improved peripheral glucose management and enhanced browning capacity. These findings suggest a novel connection between MI supplementation during suckling, BDNF signaling, and metabolic programming, providing insights into the mechanisms underlying the beneficial effects of MI during lactation.
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Affiliation(s)
- Ana Valle
- Laboratory of Molecular Biology, Nutrition and Biotechnology (Group of Nutrigenomics, Biomarkers and Risk Evaluation), University of the Balearic Islands, 07122 Palma, Spain
- Health Research Institute of the Balearic Islands (IdISBa), 07010 Palma, Spain
- Artificial Intelligence Research Institute of the Balearic Islands (IAIB), 07122 Palma, Spain
- CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), 28029 Madrid, Spain
| | - Pedro Castillo
- Laboratory of Molecular Biology, Nutrition and Biotechnology (Group of Nutrigenomics, Biomarkers and Risk Evaluation), University of the Balearic Islands, 07122 Palma, Spain
- Health Research Institute of the Balearic Islands (IdISBa), 07010 Palma, Spain
- Artificial Intelligence Research Institute of the Balearic Islands (IAIB), 07122 Palma, Spain
- CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), 28029 Madrid, Spain
| | - Adrián García-Rodríguez
- Laboratory of Molecular Biology, Nutrition and Biotechnology (Group of Nutrigenomics, Biomarkers and Risk Evaluation), University of the Balearic Islands, 07122 Palma, Spain
- Health Research Institute of the Balearic Islands (IdISBa), 07010 Palma, Spain
- Artificial Intelligence Research Institute of the Balearic Islands (IAIB), 07122 Palma, Spain
- CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), 28029 Madrid, Spain
| | - Andreu Palou
- Laboratory of Molecular Biology, Nutrition and Biotechnology (Group of Nutrigenomics, Biomarkers and Risk Evaluation), University of the Balearic Islands, 07122 Palma, Spain
- Health Research Institute of the Balearic Islands (IdISBa), 07010 Palma, Spain
- Artificial Intelligence Research Institute of the Balearic Islands (IAIB), 07122 Palma, Spain
- CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), 28029 Madrid, Spain
| | - Mariona Palou
- Laboratory of Molecular Biology, Nutrition and Biotechnology (Group of Nutrigenomics, Biomarkers and Risk Evaluation), University of the Balearic Islands, 07122 Palma, Spain
- Health Research Institute of the Balearic Islands (IdISBa), 07010 Palma, Spain
- Artificial Intelligence Research Institute of the Balearic Islands (IAIB), 07122 Palma, Spain
- CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), 28029 Madrid, Spain
| | - Catalina Picó
- Laboratory of Molecular Biology, Nutrition and Biotechnology (Group of Nutrigenomics, Biomarkers and Risk Evaluation), University of the Balearic Islands, 07122 Palma, Spain
- Health Research Institute of the Balearic Islands (IdISBa), 07010 Palma, Spain
- Artificial Intelligence Research Institute of the Balearic Islands (IAIB), 07122 Palma, Spain
- CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), 28029 Madrid, Spain
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Inyushkin AN, Poletaev VS, Inyushkina EM, Kalberdin IS, Inyushkin AA. Irisin/BDNF signaling in the muscle-brain axis and circadian system: A review. J Biomed Res 2023; 38:1-16. [PMID: 38164079 PMCID: PMC10818175 DOI: 10.7555/jbr.37.20230133] [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: 06/04/2023] [Revised: 09/19/2023] [Accepted: 09/25/2023] [Indexed: 01/03/2024] Open
Abstract
In mammals, the timing of physiological, biochemical and behavioral processes over a 24-h period is controlled by circadian rhythms. To entrain the master clock located in the suprachiasmatic nucleus of the hypothalamus to a precise 24-h rhythm, environmental zeitgebers are used by the circadian system. This is done primarily by signals from the retina via the retinohypothalamic tract, but other cues like exercise, feeding, temperature, anxiety, and social events have also been shown to act as non-photic zeitgebers. The recently identified myokine irisin is proposed to serve as an entraining non-photic signal of exercise. Irisin is a product of cleavage and modification from its precursor membrane fibronectin type Ⅲ domain-containing protein 5 (FNDC5) in response to exercise. Apart from well-known peripheral effects, such as inducing the "browning" of white adipocytes, irisin can penetrate the blood-brain barrier and display the effects on the brain. Experimental data suggest that FNDC5/irisin mediates the positive effects of physical activity on brain functions. In several brain areas, irisin induces the production of brain-derived neurotrophic factor (BDNF). In the master clock, a significant role in gating photic stimuli in the retinohypothalamic synapse for BDNF is suggested. However, the brain receptor for irisin remains unknown. In the current review, the interactions of physical activity and the irisin/BDNF axis with the circadian system are reconceptualized.
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Affiliation(s)
- Alexey N. Inyushkin
- Department of Human & Animal Physiology, Samara National Research University, Samara 443011, Russia
| | - Vitalii S. Poletaev
- Department of Human & Animal Physiology, Samara National Research University, Samara 443011, Russia
| | - Elena M. Inyushkina
- Department of Human & Animal Physiology, Samara National Research University, Samara 443011, Russia
| | - Igor S. Kalberdin
- Department of Human & Animal Physiology, Samara National Research University, Samara 443011, Russia
| | - Andrey A. Inyushkin
- Department of Human & Animal Physiology, Samara National Research University, Samara 443011, Russia
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Queen NJ, Huang W, Zou X, Mo X, Cao L. AAV-BDNF gene therapy ameliorates a hypothalamic neuroinflammatory signature in the Magel2-null model of Prader-Willi syndrome. Mol Ther Methods Clin Dev 2023; 31:101108. [PMID: 37766791 PMCID: PMC10520877 DOI: 10.1016/j.omtm.2023.09.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 09/08/2023] [Indexed: 09/29/2023]
Abstract
Individuals with Prader-Willi syndrome (PWS) exhibit several metabolic and behavioral abnormalities associated with excessive food-seeking activity. PWS is thought to be driven in part by dysfunctional hypothalamic circuitry and blunted responses to peripheral signals of satiety. Previous work described a hypothalamic transcriptomic signature of individuals with PWS. Notably, PWS patients exhibited downregulation of genes involved in neuronal development and an upregulation of neuroinflammatory genes. Deficiencies of brain-derived neurotrophic factor (BDNF) and its receptor were identified as potential drivers of PWS phenotypes. Our group recently applied an adeno-associated viral (AAV)-BDNF gene therapy within a preclinical PWS model, Magel2-null mice, to improve metabolic and behavioral function. While this proof-of-concept project was promising, it remained unclear how AAV-BDNF was influencing the hypothalamic microenvironment and how its therapeutic effect was mediated. To investigate, we hypothalamically injected AAV-BDNF to wild type and Magel2-null mice and performed mRNA sequencing on hypothalamic tissue. Here, we report that (1) Magel2 deficiency is associated with neuroinflammation in the hypothalamus and (2) AAV-BDNF gene therapy reverses this neuroinflammation. These data newly reveal Magel2-null mice as a valid model of PWS-related neuroinflammation and furthermore suggest that AAV-BDNF may modulate obesity-related neuroinflammatory phenotypes through direct or indirect means.
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Affiliation(s)
- Nicholas J. Queen
- Department of Cancer Biology & Genetics, College of Medicine, The Ohio State University, Columbus, OH 43210, USA
- The Ohio State University Comprehensive Cancer Center, Columbus, OH 43210, USA
| | - Wei Huang
- Department of Cancer Biology & Genetics, College of Medicine, The Ohio State University, Columbus, OH 43210, USA
- The Ohio State University Comprehensive Cancer Center, Columbus, OH 43210, USA
| | - Xunchang Zou
- Department of Cancer Biology & Genetics, College of Medicine, The Ohio State University, Columbus, OH 43210, USA
- The Ohio State University Comprehensive Cancer Center, Columbus, OH 43210, USA
| | - Xiaokui Mo
- Department of Biomedical Informatics, College of Medicine, The Ohio State University, Columbus, OH 43210, USA
| | - Lei Cao
- Department of Cancer Biology & Genetics, College of Medicine, The Ohio State University, Columbus, OH 43210, USA
- The Ohio State University Comprehensive Cancer Center, Columbus, OH 43210, USA
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DastAmooz S, Broujeni ST, Sarahian N. A primary study on rat fetal development and brain-derived neurotrophic factor levels under the control of electromagnetic fields. J Public Health Afr 2023; 14:2347. [PMID: 37538938 PMCID: PMC10395370 DOI: 10.4081/jphia.2023.2347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 12/22/2022] [Indexed: 08/05/2023] Open
Abstract
Background In previous researches, electromagnetic fields have been shown to adversely affect the behavior and biology of humans and animals; however, body growth and brain-derived neurotrophic factor levels were not evaluated. Objective The original investigation aimed to examine whether Electromagnetic Fields (EMF) exposure had adverse effects on spatial learning and motor function in rats and if physical activity could diminish the damaging effects of EMF exposure. In this study, we measured anthropometric measurements and brain-derived neurotrophic factor (BDNF) levels in pregnant rats' offspring to determine if Wi-Fi EMF also affected their growth. These data we report for the first time in this publication. Methods Twenty Albino-Wistar pregnant rats were divided randomly into EMF and control (CON) groups, and after delivery, 12 male fetuses were randomly selected. For assessing the body growth change of offspring beginning at delivery, then at 21 postnatal days, and finally at 56 post-natal days, the crown-rump length of the body was assessed using a digital caliper. Examining BDNF factor levels, an Enzyme-linked immunosorbent assay ELISA kit was taken. Bodyweight was recorded by digital scale. Results Outcomes of the anthropometric measurements demonstrated that EMF blocked body growth in rats exposed to EMF. The results of the BDNF test illustrated that the BDNF in the EMF liter group was remarkably decreased compared to the CON group. The results indicate that EMF exposure could affect BDNF levels and harm body growth in pregnant rats' offspring. Conclusions The results suggest that EMF exposure could affect BDNF levels and impair body growth in pregnant rats' offspring.
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Affiliation(s)
- Sima DastAmooz
- Department of Sport Science and Physical Education, Chinese University of Hong Kong, China
| | - Shahzad Tahmasebi Broujeni
- Department of Behavioral and Cognitive Sciences in Sport, Faculty of Sport Sciences and Health, University of Tehran, Iran
| | - Nahid Sarahian
- Neuroscience Research Center, Shahid Beheshti University of Medical Science, Tehran, Iran
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Trinh S, Keller L, Herpertz-Dahlmann B, Seitz J. The role of the brain-derived neurotrophic factor (BDNF) in anorexia nervosa. Psychoneuroendocrinology 2023; 151:106069. [PMID: 36878115 DOI: 10.1016/j.psyneuen.2023.106069] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 01/28/2023] [Accepted: 02/20/2023] [Indexed: 03/08/2023]
Abstract
The brain-derived neurotrophic factor (BDNF) is a growth factor belonging to the neurotrophin family which plays a pivotal role in the differentiation, survival, and plasticity of neurons in the central nervous system. Evidence suggests that BDNF is an important signal molecule in the regulation of energy balance and thus implicated in body weight control. The discovery of BDNF-expressing neurons in the paraventricular hypothalamus which is important in the regulation of energy intake, physical activity, and thermogenesis gives more evidence to the suggested participation of BDNF in eating behavior. Until now it remains questionable whether BDNF can be used as a reliable biomarker for eating disorders such as anorexia nervosa (AN) as available findings on BDNF levels in patients with AN are ambiguous. AN is an eating disorder characterized by a pathological low body weight in combination with a body image disturbance typically developing during adolescence. A severe drive for thinness leads to restrictive eating behavior often accompanied by physical hyperactivity. During therapeutic weight restoration an increase of BDNF expression levels seems desirable as it might improve neuronal plasticity and survival which is essential for learning processes and thereby essential for the success of the psychotherapeutic treatment of patients. On the contrary, the well-known anorexigenic effect of BDNF might favor relapse in patients as soon as the BDNF levels significantly increase during weight rehabilitation. The present review summarizes the association between BDNF and general eating behavior and especially focuses on the eating disorder AN. In this regard findings from preclinical AN studies (activity-based anorexia model) are outlined as well.
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Affiliation(s)
- Stefanie Trinh
- Institute for Neuroanatomy, University Hospital, RWTH University Aachen, Wendlingweg 2, Aachen D-52074, Germany.
| | - Lara Keller
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital, RWTH University Aachen, Neuenhofer Weg 21, Aachen D-52074, Germany.
| | - Beate Herpertz-Dahlmann
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital, RWTH University Aachen, Neuenhofer Weg 21, Aachen D-52074, Germany.
| | - Jochen Seitz
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital, RWTH University Aachen, Neuenhofer Weg 21, Aachen D-52074, Germany.
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A comparative study of Western, high-carbohydrate, and standard lab diet consumption throughout adolescence on metabolic and anxiety-related outcomes in young adult male and female Long-Evans rats. Behav Brain Res 2023; 438:114184. [PMID: 36336161 DOI: 10.1016/j.bbr.2022.114184] [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: 08/12/2022] [Revised: 10/11/2022] [Accepted: 10/27/2022] [Indexed: 11/05/2022]
Abstract
Anxiety and obesity are prevalent health concerns that are affected by diet in rodents and humans. How diet influences the development and maintenance of anxiety and obesity has been challenging to characterize, in part, due to methodological differences in chosen experimental and control diets. Within the same experiment, anxiety- and obesity-related effects were characterized in rats fed a Western diet (WD) relative to two control diets. Sixty Long-Evans rats split equally by sex were given standard diet (SD), control (i.e., high-carbohydrate) diet (HCD), or WD from weaning until sacrifice in early adulthood. Anxiety-related behavior was characterized in a modified open field test (mOFT) that allowed for the measurement of defensive behaviors (e.g., hiding within a refuge area), in addition to traditional OF measures (e.g., time in center). Both anxiety-related behaviors and hippocampal CA3 BDNF revealed specific sex differences. Neither adolescent weight gain of male and female rats, nor total body weight in early adulthood, were dependent on administration of HCD or WD, although the WD group consumed the most calories. In males only, administration of either WD or HCD resulted in elevated leptin levels relative to administration of the SD. Results indicate that SDs and HCDs are two distinct types of control diets that can affect comparability of studies and that using an SD might reveal more subtle metabolic changes. Control diet choice should be strongly considered during study design and interpretation, depending on specific research goals. Such studies should include both males and females as these effects are sex-specific.
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Galindo C, Nguyen VT, Hill B, Sims N, Heck A, Negron M, Lusk C. Brain-derived neurotrophic factor rs6265 (Val66Met) single nucleotide polymorphism as a master modifier of human pathophysiology. Neural Regen Res 2023. [PMID: 35799516 PMCID: PMC9241394 DOI: 10.4103/1673-5374.343894] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Brain-derived neurotrophic factor is the most prevalent member of the nerve growth factor family. Since its discovery in 1978, this enigmatic molecule has spawned more than 27,000 publications, most of which are focused on neurological disorders. Brain-derived neurotrophic factor is indispensable during embryogenesis and postnatally for the normal development and function of both the central and peripheral nervous systems. It is becoming increasingly clear, however, that brain-derived neurotrophic factor likewise plays crucial roles in a variety of other biological functions independently of sympathetic or parasympathetic involvement. Brain-derived neurotrophic factor is also increasingly recognized as a sophisticated environmental sensor and master coordinator of whole organismal physiology. To that point, we recently found that a common nonsynonymous (Val66→Met) single nucleotide polymorphism in the brain-derived neurotrophic factor gene (rs6265) not only substantially alters basal cardiac transcriptomics in mice but subtly influences heart gene expression and function differentially in males and females. In addition to a short description of recent results from associative neuropsychiatric studies, this review provides an eclectic assortment of research reports that support a modulatory role for rs6265 including and beyond the central nervous system.
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Asadi MR, Gharesouran J, Sabaie H, Moslehian MS, Dehghani H, Arsang-Jang S, Taheri M, Mortazavi D, Hussen BM, Sayad A, Rezazadeh M. Assessing the expression of two post-transcriptional BDNF regulators, TTP and miR-16 in the peripheral blood of patients with Schizophrenia. BMC Psychiatry 2022; 22:771. [PMID: 36476595 PMCID: PMC9730652 DOI: 10.1186/s12888-022-04442-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 11/30/2022] [Indexed: 12/12/2022] Open
Abstract
Schizophrenia (SCZ) is a severe mental disorder with an unknown pathophysiology. Brain-Derived Neurotrophic Factor (BDNF) is a neurotrophin that has been associated with synapse plasticity, learning, and memory, as well as neurodevelopment and neuroprotection. The importance of neurodevelopmental and neurotoxicity-related components in the pathophysiology of SCZ has been highlighted in research on the neurobiology of this disease. The purpose of this research is to investigate the significant expression of two variables, tristetraprolin (TTP) and miR-16, which are known to be regulators of BDNF expression. Fifty Iranian Azeri SCZ patients were enrolled, and fifty healthy volunteers were age- and gender-matched as controls. A quantitative polymerase chain reaction measured the expression levels of the TTP and miR-16 in the peripheral blood (PB) of SCZ patients and healthy people. TTP expression levels in patients were higher than in controls, regardless of gender or age (posterior beta = 1.532, adjusted P-value = 0.012). TTP and miR-16 expression levels were found to be significantly correlated in both SCZ patients and healthy controls (r = 0.701, P < 0.001 and r = 0.777, P < 0.001, respectively). Due to the increased expression of TTP in SCZ and the existence of a significant correlation between TTP and miR-16, which helps to act on target mRNAs with AU-rich elements, this mechanism can be considered an influencing factor in SCZ.
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Affiliation(s)
- Mohammad Reza Asadi
- grid.412888.f0000 0001 2174 8913Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Jalal Gharesouran
- grid.412888.f0000 0001 2174 8913Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hani Sabaie
- grid.412888.f0000 0001 2174 8913Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Marziyeh Sadat Moslehian
- grid.412888.f0000 0001 2174 8913Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hossein Dehghani
- grid.411701.20000 0004 0417 4622Department of Molecular Medicine, School of Medicine, Birjand University of Medical Sciences, Birjand, Iran
| | - Shahram Arsang-Jang
- grid.469309.10000 0004 0612 8427Cancer Gene therapy Research Center, Zanjan University of Medical Science, Zanjan, Iran
| | - Mohammad Taheri
- Men's Health and Reproductive Health Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Deniz Mortazavi
- grid.411036.10000 0001 1498 685XDepartment of Genetics and Molecular Biology, School of Medicine, Isfahan university of medical sciences, Isfahan, Iran
| | - Bashdar Mahmud Hussen
- grid.412012.40000 0004 0417 5553Department of Pharmacognosy, College of Pharmacy, Hawler Medical University, Kurdistan Region, Erbil, Iraq
| | - Arezou Sayad
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Maryam Rezazadeh
- Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
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Estrogen as a key regulator of energy homeostasis and metabolic health. Biomed Pharmacother 2022; 156:113808. [DOI: 10.1016/j.biopha.2022.113808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 10/02/2022] [Accepted: 10/03/2022] [Indexed: 11/23/2022] Open
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Association between PTPN1 polymorphisms and obesity-related phenotypes in European adolescents: influence of physical activity. Pediatr Res 2022:10.1038/s41390-022-02377-1. [PMID: 36369476 DOI: 10.1038/s41390-022-02377-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 10/06/2022] [Accepted: 10/23/2022] [Indexed: 11/13/2022]
Abstract
BACKGROUND To study the associations of Protein Tyrosine Phosphatase-N1 (PTPN1) polymorphisms with obesity-related phenotypes in European adolescents, and the influence of physical activity on these relationships. METHODS Five polymorphisms of PTPN1 were genotyped in 1057 European adolescents (12-18 years old). We measured several phenotypes related to obesity, such as adiposity markers, and biochemical and clinical parameters. Physical activity was objectively measured by accelerometry. RESULTS The T, A, T, T and G alleles of the rs6067472, rs10485614, rs2143511, rs6020608 and rs968701 polymorphisms, respectively, were associated with lower levels of obesity-related phenotypes (i.e., body mass index, body fat percentage, hip circumference, fat mass index, systolic blood pressure and leptin) in European adolescents. In addition, the TATTG haplotype was associated with lower body fat percentage and fat mass index compared to the AACCA haplotype. Finally, when physical activity levels were considered, alleles of the rs6067472, rs2143511, rs6020608 and rs968701 polymorphisms were only associated with lower adiposity in active adolescents. CONCLUSIONS PTPN1 polymorphisms were associated with adiposity in European adolescents. Specifically, alleles of these polymorphisms were associated with lower adiposity only in physically active adolescents. Therefore, meeting the recommendations of daily physical activity may reduce obesity risk by modulating the genetic predisposition to obesity. IMPACT Using gene-phenotype and gene*environment analyses, we detected associations between polymorphisms of the Protein Tyrosine Phosphatase-N1 (PTPN1) gene and obesity-related phenotypes, suggesting a mechanism that can be modulated by physical activity. This study shows that genetic variability of PTPN1 is associated with adiposity, while physical activity seems to modulate the genetic predisposition. This brings insights about the mechanisms by which physical activity positively influences obesity.
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Ghafouri-Fard S, Safarzadeh A, Mahmud Hussen B, Akhavan-Bahabadi M, Taheri M, Sharifi G. In silico characterization of competing endogenous RNA network in glioblastoma multiforme with a systems biology approach. Front Oncol 2022; 12:1024567. [PMID: 36313669 PMCID: PMC9608873 DOI: 10.3389/fonc.2022.1024567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Accepted: 09/23/2022] [Indexed: 11/30/2022] Open
Abstract
Glioblastoma multiforme (GBM) is the most frequent malignant type of primary brain cancers and is a malignancy with poor prognosis. Thus, it is necessary to find novel therapeutic modalities based on molecular events occur at different stages of tumor progression. We used expression profiles of GBM tissues that contained long non-coding RNA (lncRNA), microRNA (miRNA) and mRNA signatures to make putative ceRNA networks. Our strategy led to identification of 1080 DEmRNAs, including 777 downregulated DEmRNAs (such as GJB6 and SLC12A5) and 303 upregulated DEmRNAs (such as TOP2A and RRM2), 19 DElncRNAs, including 16 downregulated DElncRNAs (such as MIR7-3HG and MIR124-2HG) and 3 upregulated DElncRNAs (such as CRNDE and XIST) and 49 DEmiRNAs, including 10 downregulated DEmiRNAs (such as hsa-miR-10b-5p and hsa-miR-1290) and 39 upregulated DEmiRNAs (such as hsa-miR-219a-2-3p and hsa-miR-338-5p). We also identified DGCR5, MIAT, hsa-miR-129-5p, XIST, hsa-miR-128-3p, PART1, hsa-miR-10b-5p, LY86-AS1, CRNDE, and DLX6-AS1 as 10 hub genes in the ceRNA network. The current study provides novel insight into molecular events during GBM pathogenesis. The identified molecules can be used as therapeutic targets for GBM.
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Affiliation(s)
- Soudeh Ghafouri-Fard
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Arash Safarzadeh
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Bashdar Mahmud Hussen
- Department of Pharmacognosy, College of Pharmacy, Hawler Medical University, Erbil, Iraq
- Center of Research and Strategic Studies, Lebanese French University, Erbil, Iraq
| | | | - Mohammad Taheri
- Men’s Health and Reproductive Health Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Institute of Human Genetics, Jena University Hospital, Jena, Germany
- *Correspondence: Mohammad Taheri, ; Guive Sharifi,
| | - Guive Sharifi
- Skull Base Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- *Correspondence: Mohammad Taheri, ; Guive Sharifi,
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Exploring Lead loci shared between schizophrenia and Cardiometabolic traits. BMC Genomics 2022; 23:617. [PMID: 36008755 PMCID: PMC9414090 DOI: 10.1186/s12864-022-08766-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 07/13/2022] [Indexed: 11/10/2022] Open
Abstract
Individuals with schizophrenia (SCZ) have, on average, a 10- to 20-year shorter expected life span than the rest of the population, primarily due to cardiovascular disease comorbidity. Genome-wide association studies (GWAS) have previously been used to separately identify common variants in SCZ and cardiometabolic traits. However, genetic variants jointly influencing both traits remain to be fully characterised. To assess overlaps (if any) between the genetic architecture of SCZ and cardiometabolic traits, we used conditional false discovery rate (FDR) and local genetic correlation statistical framework analyses. A conjunctional FDR was used to identify shared genetic traits between SCZ and cardiometabolic risk factors. We identified 144 genetic variants which were shared between SCZ and body mass index (BMI), and 15 variants shared between SCZ and triglycerides (TG). Furthermore, we discovered four novel single nucleotide polymorphisms (SNPs) (rs3865350, rs9860913, rs13307 and rs9614186) and four proximate genes (DERL2, SNX4, LY75 and EFCAB6) which were shared by SCZ and BMI. We observed that the novel genetic variant rs13307 and the most proximate gene LY75 exerted potential effects on SCZ and BMI comorbidity. Also, we observed a mixture of concordant and opposite direction associations with shared genetic variants. We demonstrated a moderate to high genetic overlap between SCZ and cardiometabolic traits associated with a pattern of bidirectional associations. Our data suggested a complex interplay between metabolism-related gene pathways in SCZ pathophysiology.
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Vindas-Smith R, Quesada D, Hernández-Solano MI, Castro M, Sequeira-Cordero A, Fornaguera J, Gómez G, Brenes JC. Fat intake and obesity-related parameters predict striatal BDNF gene expression and dopamine metabolite levels in cafeteria diet-fed rats. Neuroscience 2022; 491:225-239. [DOI: 10.1016/j.neuroscience.2022.03.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 03/08/2022] [Accepted: 03/31/2022] [Indexed: 10/18/2022]
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Myo-Inositol Supplementation in Suckling Rats Protects against Adverse Programming Outcomes on Hypothalamic Structure Caused by Mild Gestational Calorie Restriction, Partially Comparable to Leptin Effects. Nutrients 2021; 13:nu13093257. [PMID: 34579137 PMCID: PMC8466200 DOI: 10.3390/nu13093257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 09/10/2021] [Accepted: 09/14/2021] [Indexed: 01/01/2023] Open
Abstract
We studied whether myo-inositol supplementation throughout lactation, alone and combined with leptin, may reverse detrimental effects on hypothalamic structure and function caused by gestational calorie gestation (CR) in rats. Candidate early transcript-based biomarkers of metabolic health in peripheral blood mononuclear cells (PBMC) were also studied. Offspring of dams exposed to 25% gestational CR and supplemented during lactation with physiological doses of leptin (CR-L), myo-inositol (CR-M), the combination (CR-LM), or the vehicle (CR-V) as well as control rats (CON-V) were followed and sacrificed at postnatal day 25. Myo-inositol and the combination increased the number of neurons in arcuate nucleus (ARC) (only in females) and paraventricular nucleus, and myo-inositol (alone) restored the number of αMSH+ neurons in ARC. Hypothalamic mRNA levels of Lepr in CR-M and Insr in CR-M and CR-LM males were higher than in CR-V and CON-V, respectively. In PBMC, increased expression levels of Lrp11 and Gls in CR-V were partially normalized in all supplemented groups (but only in males for Gls). Therefore, myo-inositol supplementation throughout lactation, alone and combined with leptin, reverts programmed alterations by fetal undernutrition on hypothalamic structure and gene expression of potential early biomarkers of metabolic health in PBMC, which might be attributed, in part, to increased leptin sensitivity.
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Kalejahi P, Kheirouri S, Noorazar SG, Sanayei M. The relationship between brain-derived neurotrophic factor and metabolic syndrome in patients with chronic schizophrenia: A systematic review. Neuropeptides 2021; 87:102135. [PMID: 33812160 DOI: 10.1016/j.npep.2021.102135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Revised: 02/18/2021] [Accepted: 02/28/2021] [Indexed: 10/22/2022]
Abstract
BACKGROUND & AIMS Schizophrenia is a serious long-term disorder in which the metabolic complications and abnormalities of the brain-derived neurotrophic factor (BDNF) can be found. In this study, we conducted a systematic review of the relationship between BDNF, metabolic syndrome (MetS) and its components in schizophrenic patients. METHODS Data were collected mainly from PubMed, Google Scholar, Scopus, and ProQuest databases. The keywords related to the BDNF, MetS, schizophrenia were searched. Two reviewers independently screened 1061 abstracts. And eventually, a total of 7 studies (6 observational and 1 interventional) was included in the systematic reviews. RESULTS Four of the 7 study ascertained statistically significant inverse relationship between serum BDNF levels and MetS in schizophrenic patients. While in the other two studies, there was no inverse relationship. In the last selected study, the researchers found a weak association between the Val66Met polymorphism in BDNF Gene and clozapine-induced MetS. CONCLUSION Although this relationship could not be determined but BDNF levels appear to be reduced in schizophrenic patients with MetS and factors such as sex and antipsychotic class differentiation, sampling and methodology and episodes of illness could play a role in the results and outcomes.
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Affiliation(s)
- Parinaz Kalejahi
- Department of Community Nutrition, Faculty of Nutrition and Food sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sorayya Kheirouri
- Department of Community Nutrition, Faculty of Nutrition and Food sciences, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Seyyed Gholamreza Noorazar
- Research Center of Psychiatry and Behavioral Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mahzad Sanayei
- Department of Community Nutrition, Faculty of Nutrition and Food sciences, Tabriz University of Medical Sciences, Tabriz, Iran
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Sinet F, Soty M, Zemdegs J, Guiard B, Estrada J, Malleret G, Silva M, Mithieux G, Gautier-Stein A. Dietary Fibers and Proteins Modulate Behavior via the Activation of Intestinal Gluconeogenesis. Neuroendocrinology 2021; 111:1249-1265. [PMID: 33429400 DOI: 10.1159/000514289] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 01/07/2021] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Several studies have suggested that diet, especially the one enriched in microbiota-fermented fibers or fat, regulates behavior. The underlying mechanisms are currently unknown. We previously reported that certain macronutrients (fermentable fiber and protein) regulate energy homeostasis via the activation of intestinal gluconeogenesis (IGN), which generates a neural signal to the brain. We hypothesized that these nutriments might control behavior using the same gut-brain circuit. METHODS Wild-type and IGN-deficient mice were fed chow or diets enriched in protein or fiber. Changes in their behavior were assessed using suited tests. Hippocampal neurogenesis, extracellular levels of serotonin, and protein expression levels were assessed by immunofluorescence, in vivo dialysis, and Western blotting, respectively. IGN was rescued by infusing glucose into the portal vein of IGN-deficient mice. RESULTS We show here that both fiber- and protein-enriched diets exert beneficial actions on anxiety-like and depressive-like behaviors. These benefits do not occur in mice lacking IGN. Consistently, IGN-deficient mice display hallmarks of depressive-like disorders, including decreased hippocampal neurogenesis, basal hyperactivity, and deregulation of the hypothalamic-pituitary-adrenal axis, which are associated with increased expression of the precursor of corticotropin-releasing hormone in the hypothalamus and decreased expression of the glucocorticoid receptor in the hippocampus. These neurobiological alterations are corrected by portal glucose infusion mimicking IGN. CONCLUSION IGN translates nutritional information, allowing the brain to finely coordinate energy metabolism and behavior.
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Affiliation(s)
- Flore Sinet
- INSERM UMR-S1213, Université Claude Bernard Lyon 1, Université de Lyon, Lyon, France
| | - Maud Soty
- INSERM UMR-S1213, Université Claude Bernard Lyon 1, Université de Lyon, Lyon, France
| | - Juliane Zemdegs
- CRCA - UMR 5169 - Université Paul Sabatier, Toulouse, France
| | - Bruno Guiard
- CRCA - UMR 5169 - Université Paul Sabatier, Toulouse, France
| | - Judith Estrada
- INSERM UMR-S1213, Université Claude Bernard Lyon 1, Université de Lyon, Lyon, France
| | - Gaël Malleret
- Forgetting and Cortical Dynamics, Lyon Neuroscience Research Center, Université de Lyon, Lyon, France
| | - Marine Silva
- INSERM UMR-S1213, Université Claude Bernard Lyon 1, Université de Lyon, Lyon, France
| | - Gilles Mithieux
- INSERM UMR-S1213, Université Claude Bernard Lyon 1, Université de Lyon, Lyon, France
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Huang YQ, Wang Y, Hu K, Lin S, Lin XH. Hippocampal Glycerol-3-Phosphate Acyltransferases 4 and BDNF in the Progress of Obesity-Induced Depression. Front Endocrinol (Lausanne) 2021; 12:667773. [PMID: 34054732 PMCID: PMC8158158 DOI: 10.3389/fendo.2021.667773] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Accepted: 04/19/2021] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Obesity has been reported to lead to increased incidence of depression. Glycerol-3-phosphate acyltransferases 4 (GPAT4) is involved in triacylglycerol synthesis and plays an important role in the occurrence of obesity. GPAT4 is the only one of GPAT family expressed in the brain. The aim of this study is to investigate if central GPAT4 is associated with obesity-related depression and its underlying mechanism. RESULTS A high-fat diet resulted in increased body weight and blood lipid. HFD induced depression like behavior in the force swimming test, tail suspension test and sucrose preference test. HFD significantly up-regulated the expression of GPAT4 in hippocampus, IL-1β, IL-6, TNF-α and NF-κB, accompanied with down-regulation of BDNF expression in hippocampus and ventromedical hypothalamus, which was attributed to AMP-activated protein kinase (AMPK) and cAMP-response element binding protein (CREB). CONCLUSION Our findings suggest that hippocampal GPAT4 may participate in HFD induced depression through AMPK/CREB/BDNF pathway, which provides insights into a clinical target for obesity-associated depression intervention.
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Affiliation(s)
- Yin-qiong Huang
- Department of Endocrinology, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
| | - Yaofeng Wang
- Department of Endocrinology, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
| | - Keyue Hu
- Department of Endocrinology, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
| | - Shu Lin
- Centre of Neurological and Metabolic Research, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
- Diabetes and Metabolism Division, Garvan Institute of Medical Research, 384 Victoria Street, Darlinghurst, Sydney, NSW, Australia
- *Correspondence: Xia-hong Lin, ; Shu Lin,
| | - Xia-hong Lin
- Department of Endocrinology, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, China
- *Correspondence: Xia-hong Lin, ; Shu Lin,
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Leptin enhances adult neurogenesis and reduces pathological features in a transgenic mouse model of Alzheimer's disease. Neurobiol Dis 2020; 148:105219. [PMID: 33301880 DOI: 10.1016/j.nbd.2020.105219] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 11/18/2020] [Accepted: 12/03/2020] [Indexed: 01/19/2023] Open
Abstract
Alzheimer's disease (AD) is the most common dementia worldwide and is characterized by the presence of senile plaques by amyloid-beta (Aβ) and neurofibrillary tangles of hyperphosphorylated Tau protein. These changes lead to progressive neuronal degeneration and dysfunction, resulting in severe brain atrophy and cognitive deficits. With the discovery that neurogenesis persists in the adult mammalian brain, including brain regions affected by AD, studies of the use of neural stem cells (NSCs) for the treatment of neurodegenerative diseases to repair or prevent neuronal cell loss have increased. Here we demonstrate that leptin administration increases the neurogenic process in the dentate gyrus of the hippocampus as well as in the subventricular zone of lateral ventricles of adult and aged mice. Chronic treatment with leptin increased NSCs proliferation with significant effects on proliferation and differentiation of newborn cells. The expression of the long form of the leptin receptor, LepRb, was detected in the neurogenic niches by reverse qPCR and immunohistochemistry. Moreover, leptin modulated astrogliosis, microglial cell number and the formation of senile plaques. Additionally, leptin led to attenuation of Aβ-induced neurodegeneration and superoxide anion production as revealed by Fluoro-Jade B and dihydroethidium staining. Our study contributes to the understanding of the effects of leptin in the brain that may lead to the development of new therapies to treat Alzheimer's disease.
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19
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The Role of Ventromedial Hypothalamus Receptors in the Central Regulation of Food Intake. Int J Pept Res Ther 2020. [DOI: 10.1007/s10989-020-10120-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Ryan S, Cummins EP, Farre R, Gileles-Hillel A, Jun JC, Oster H, Pepin JL, Ray DW, Reutrakul S, Sanchez-de-la-Torre M, Tamisier R, Almendros I. Understanding the pathophysiological mechanisms of cardiometabolic complications in obstructive sleep apnoea: towards personalised treatment approaches. Eur Respir J 2020; 56:13993003.02295-2019. [PMID: 32265303 DOI: 10.1183/13993003.02295-2019] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 03/15/2020] [Indexed: 12/19/2022]
Abstract
In January 2019, a European Respiratory Society research seminar entitled "Targeting the detrimental effects of sleep disturbances and disorders" was held in Dublin, Ireland. It provided the opportunity to critically review the current evidence of pathophysiological responses of sleep disturbances, such as sleep deprivation, sleep fragmentation or circadian misalignment and of abnormalities in physiological gases such as oxygen and carbon dioxide, which occur frequently in respiratory conditions during sleep. A specific emphasis of the seminar was placed on the evaluation of the current state of knowledge of the pathophysiology of cardiovascular and metabolic diseases in obstructive sleep apnoea (OSA). Identification of the detailed mechanisms of these processes is of major importance to the field and this seminar offered an ideal platform to exchange knowledge, and to discuss pitfalls of current models and the design of future collaborative studies. In addition, we debated the limitations of current treatment strategies for cardiometabolic complications in OSA and discussed potentially valuable alternative approaches.
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Affiliation(s)
- Silke Ryan
- Pulmonary and Sleep Disorders Unit, St Vincent's University Hospital, Dublin, Ireland .,School of Medicine, Conway Institute, University College Dublin, Dublin, Ireland
| | - Eoin P Cummins
- School of Medicine, Conway Institute, University College Dublin, Dublin, Ireland
| | - Ramon Farre
- Unitat de Biofísica i Bioenginyeria, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona-IDIBAPS, and CIBER Enfermedades Respiratorias, Barcelona, Spain
| | - Alex Gileles-Hillel
- Pediatric Pulmonology and Sleep Unit, Dept of Pediatrics, and The Wohl Institute for Translational Medicine, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Jonathan C Jun
- Pulmonary and Critical Care Medicine, School of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Henrik Oster
- Institute of Neurobiology, University of Lübeck, Lübeck, Germany
| | | | - David W Ray
- NIHR Oxford Biomedical Research Centre, John Radcliffe Hospital, Oxford, UK.,Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, Oxford, UK
| | - Sirimon Reutrakul
- Division of Endocrinology, Diabetes, and Metabolism, Dept of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Manuel Sanchez-de-la-Torre
- Group of Precision Medicine in Chronic Diseases, Hospital Arnau de Vilanova-Santa Maria, IRBLleida, Lleida, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | - Renaud Tamisier
- HP2 INSERM U1042, Université Grenoble Alpes, Grenoble, France
| | - Isaac Almendros
- Unitat de Biofísica i Bioenginyeria, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona-IDIBAPS, and CIBER Enfermedades Respiratorias, Barcelona, Spain
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21
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Gassó P, Arnaiz JA, Mas S, Lafuente A, Bioque M, Cuesta MJ, Díaz-Caneja CM, García C, Lobo A, González-Pinto A, Parellada M, Corripio I, Vieta E, Castro-Fornieles J, Mané A, Rodríguez N, Boloc D, Saiz-Ruiz J, Bernardo M. Association study of candidate genes with obesity and metabolic traits in antipsychotic-treated patients with first-episode psychosis over a 2-year period. J Psychopharmacol 2020; 34:514-523. [PMID: 32009515 DOI: 10.1177/0269881120903462] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
AIMS Patients with a first episode of psychosis (FEP) often display different metabolic disturbances even independently of drug therapy. However, antipsychotic (AP) treatment, especially with second-generation APs, is strongly linked to weight gain, which increases patients' risk of developing obesity and other metabolic diseases. There is an important genetic risk component that can contribute to the appearance of these disturbances. The aim of the present study was to evaluate the effect of polymorphisms in selected candidate genes on obesity and other anthropometric and metabolic traits in 320 AP-treated FEP patients over the course of a 2-year follow-up. METHODS These patients were recruited in the multicentre PEPs study (Phenotype-genotype and environmental interaction; Application of a predictive model in first psychotic episodes). A total of 127 validated single nucleotide polymorphisms (SNPs) in 18 candidate genes were included in the genetic analysis. RESULTS After Bonferroni correction, SNPs in ADRA2A, FTO, CNR1, DRD2, DRD3, LEPR and BDNF were associated with obesity, abdominal circumference, triglycerides, HDL cholesterol, and/or percentage of glycated haemoglobin. CONCLUSIONS Although our results should be interpreted as exploratory, they support previous evidence of the impact of these candidate genes on obesity and metabolic status. Further research is required to gain a better knowledge of the genetic variants that can be considered relevant metabolic risk factors. The ability to identify FEP patients at higher risk for these metabolic disturbances would enable clinicians to better select and control their AP treatment.
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Affiliation(s)
- Patricia Gassó
- Department of Basic Clinical Practice, University of Barcelona, Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Joan Albert Arnaiz
- Department of Basic Clinical Practice, University of Barcelona, Barcelona, Spain
| | - Sergi Mas
- Department of Basic Clinical Practice, University of Barcelona, Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Spain
| | - Amalia Lafuente
- Department of Basic Clinical Practice, University of Barcelona, Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Spain
| | - Miquel Bioque
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Spain.,Barcelona Clínic Schizophrenia Unit, Neuroscience Institute, Hospital Clinic of Barcelona, Barcelona, Catalunya, Spain.,Department of Medicine, University of Barcelona, Barcelona, Spain
| | - Manuel J Cuesta
- Departmentof Psychiatry, Complejo Hospitalario de Navarra, Instituto de Investigaciones Sanitarias de Navarra (IdiSNa), Pamplona, Spain
| | - Covadonga M Díaz-Caneja
- Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Spain.,Department of Child and Adolescent Psychiatry, Hospital General Universitario Gregorio Marañón, IiSGM, School of Medicine, Universidad Complutense, Madrid, Spain
| | - Clemente García
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Spain.,Barcelona Clínic Schizophrenia Unit, Neuroscience Institute, Hospital Clinic of Barcelona, Barcelona, Catalunya, Spain.,Department of Medicine, University of Barcelona, Barcelona, Spain
| | - Antonio Lobo
- Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Spain.,Department of Medicine and Psychiatry, Universidad de Zaragoza, Instituto de Investigación Sanitaria Aragón (IIS Aragon), Zaragoza, Spain
| | - Ana González-Pinto
- Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Spain.,Hospital Universitario Araba, Servicio de Psiquiatria, UPV/EHU, Bioaraba, Spain
| | - Mara Parellada
- Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Spain.,Department of Child and Adolescent Psychiatry, Hospital General Universitario Gregorio Marañón, IiSGM, School of Medicine, Universidad Complutense, Madrid, Spain
| | - Iluminada Corripio
- Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Spain.,Department of Psychiatry, Institut d'Investigació Biomèdica-Sant Pau (IIB-SANT PAU), Hospital de la Santa Creu i Sant Pau; Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
| | - Eduard Vieta
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Spain.,Department of Medicine, University of Barcelona, Barcelona, Spain.,Bipolar Disorder Unit, Neuroscience Institute, Hospital Clinic of Barcelona, Spain
| | - Josefina Castro-Fornieles
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Spain.,Department of Medicine, University of Barcelona, Barcelona, Spain.,Department of Child and Adolescent Psychiatry and Psychology, Institute Clinic of Neurosciences, Hospital Clinic of Barcelona, Spain
| | - Anna Mané
- Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Spain.,Hospital del Mar, Medical Research Institute (IMIM), Barcelona, Spain
| | | | - Daniel Boloc
- Department of Medicine, University of Barcelona, Barcelona, Spain
| | - Jerónimo Saiz-Ruiz
- Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Spain.,Department of Psychiatry, Hospital Universitario Ramón y Cajal, IRYCIS, Universidad de Alcalá, Madrid, Spain
| | - Miguel Bernardo
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Spain.,Barcelona Clínic Schizophrenia Unit, Neuroscience Institute, Hospital Clinic of Barcelona, Barcelona, Catalunya, Spain.,Bipolar Disorder Unit, Neuroscience Institute, Hospital Clinic of Barcelona, Spain
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- Department of Basic Clinical Practice, University of Barcelona, Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Spain.,Barcelona Clínic Schizophrenia Unit, Neuroscience Institute, Hospital Clinic of Barcelona, Barcelona, Catalunya, Spain.,Department of Child and Adolescent Psychiatry, Hospital General Universitario Gregorio Marañón, IiSGM, School of Medicine, Universidad Complutense, Madrid, Spain.,Hospital Universitario Araba, Servicio de Psiquiatria, UPV/EHU, Bioaraba, Spain.,Department of Psychiatry, Institut d'Investigació Biomèdica-Sant Pau (IIB-SANT PAU), Hospital de la Santa Creu i Sant Pau; Universitat Autònoma de Barcelona (UAB), Barcelona, Spain.,Bipolar Disorder Unit, Neuroscience Institute, Hospital Clinic of Barcelona, Spain.,Department of Child and Adolescent Psychiatry and Psychology, Institute Clinic of Neurosciences, Hospital Clinic of Barcelona, Spain.,Hospital del Mar, Medical Research Institute (IMIM), Barcelona, Spain.,Department of Psychiatry, Hospital Universitario Ramón y Cajal, IRYCIS, Universidad de Alcalá, Madrid, Spain.,Hospital Universitario Miguel Servet, Zaragoza.,INCLIVA, Universidad de Valencia, Hospital Clínico Universitario de Valencia, Spain.,Department of Psychiatry, Bellvitge University Hospital-IDIBELL, Department of Clinical Sciences, School of Medicine, University of Barcelona, Spain.,Department of Psychiatry, University of Oviedo, Spain.,Cruces University Hospital, BioCruces Health Research Institute, University of the Basque Country (UPV/EHU) Vizcaya, Spain.,Instituto de Investigación Hospital 12 de Octubre (imas 12), Madrid, Spain.,Universidad Complutense de Madrid (UCM), Spain.,Parc Sanitari Sant Joan de Déu, Institut de Recerca Sant Joan de Déu, Sant Boi de Llobregat, Barcelona, Spain.,FIDMAG Germanes Hospitalàries Research Foundation, Barcelona, Spain
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22
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Bae-Gartz I, Janoschek R, Breuer S, Schmitz L, Hoffmann T, Ferrari N, Branik L, Oberthuer A, Kloppe CS, Appel S, Vohlen C, Dötsch J, Hucklenbruch-Rother E. Maternal Obesity Alters Neurotrophin-Associated MAPK Signaling in the Hypothalamus of Male Mouse Offspring. Front Neurosci 2019; 13:962. [PMID: 31572115 PMCID: PMC6753176 DOI: 10.3389/fnins.2019.00962] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 08/28/2019] [Indexed: 12/26/2022] Open
Abstract
Purpose Maternal obesity has emerged as an important risk factor for the development of metabolic disorders in the offspring. The hypothalamus as the center of energy homeostasis regulation is known to function based on complex neuronal networks that evolve during fetal and early postnatal development and maintain their plasticity into adulthood. Development of hypothalamic feeding networks and their functional plasticity can be modulated by various metabolic cues, especially in early stages of development. Here, we aimed at determining the underlying molecular mechanisms that contribute to disturbed hypothalamic network formation in offspring of obese mouse dams. Methods Female mice were fed either a control diet (CO) or a high-fat diet (HFD) after weaning until mating and during pregnancy and gestation. Male offspring was sacrificed at postnatal day (P) 21. The hypothalamus was subjected to gene array analysis, quantitative PCR and western blot analysis. Results P21 HFD offspring displayed increased body weight, circulating insulin levels, and strongly increased activation of the hypothalamic insulin signaling cascade with a concomitant increase in ionized calcium binding adapter molecule 1 (IBA1) expression. At the same time, the global gene expression profile in CO and HFD offspring differed significantly. More specifically, manifest influences on several key pathways of hypothalamic neurogenesis, axogenesis, and regulation of synaptic transmission and plasticity were detectable. Target gene expression analysis revealed significantly decreased mRNA expression of several neurotrophic factors and co-factors and their receptors, accompanied by decreased activation of their respective intracellular signal transduction. Conclusion Taken together, these results suggest a potential role for disturbed neurotrophin signaling and thus impaired neurogenesis, axogenesis, and synaptic plasticity in the pathogenesis of the offspring’s hypothalamic feeding network dysfunction due to maternal obesity.
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Affiliation(s)
- Inga Bae-Gartz
- Department of Pediatrics, University Hospital of Cologne, Cologne, Germany
| | - Ruth Janoschek
- Department of Pediatrics, University Hospital of Cologne, Cologne, Germany
| | - Saida Breuer
- Department of Pediatrics, University Hospital of Cologne, Cologne, Germany
| | - Lisa Schmitz
- Department of Pediatrics, University Hospital of Cologne, Cologne, Germany
| | - Thorben Hoffmann
- Department of Pediatrics, University Hospital of Cologne, Cologne, Germany
| | - Nina Ferrari
- Heart Center, Cologne Center for Prevention in Childhood and Youth, University Hospital of Cologne, Cologne, Germany
| | - Lena Branik
- Department of Pediatrics, University Hospital of Cologne, Cologne, Germany
| | - Andre Oberthuer
- Department of Pediatrics, University Hospital of Cologne, Cologne, Germany
| | - Cora-Sophia Kloppe
- Department of Pediatrics, University Hospital of Cologne, Cologne, Germany
| | - Sarah Appel
- Department of Pediatrics, University Hospital of Cologne, Cologne, Germany
| | - Christina Vohlen
- Department of Pediatrics, University Hospital of Cologne, Cologne, Germany
| | - Jörg Dötsch
- Department of Pediatrics, University Hospital of Cologne, Cologne, Germany
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23
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Lima-Ojeda JM, Mallien AS, Brandwein C, Lang UE, Hefter D, Inta D. Altered prepulse inhibition of the acoustic startle response in BDNF-deficient mice in a model of early postnatal hypoxia: implications for schizophrenia. Eur Arch Psychiatry Clin Neurosci 2019; 269:439-447. [PMID: 29453493 DOI: 10.1007/s00406-018-0882-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 02/12/2018] [Indexed: 12/14/2022]
Abstract
The brain-derived neurotrophic factor (BDNF) is a major proliferative agent in the nervous system. Both BDNF-deficiency and perinatal hypoxia represent genetic/environmental risk factors for schizophrenia. Moreover, a decreased BDNF response to birth hypoxia was associated with the disease. BDNF expression is influenced by neuronal activity and environmental conditions such as hypoxia. Thus, it may partake in neuroprotective and reparative mechanisms in acute or chronic neuronal insults. However, the interaction of hypoxia and BDNF is insufficiently understood and the behavioral outcome unknown. Therefore, we conducted a battery of behavioral tests in a classical model of chronic early postnatal mild hypoxia (10% O2), known to significantly impair brain development, in BDNF-deficient mice. We found selective deficits in measures associated with sensorimotor gating, namely enhanced acoustic startle response (ASR) and reduced prepulse inhibition (PPI) of ASR in BDNF-deficient mice. Unexpectedly, the alterations of sensorimotor gating were caused only by BDNF-deficiency alone, whereas hypoxia failed to evoke severe deficits and even leads to a milder phenotype in BDNF-deficient mice. As deficits in sensorimotor gating are present in schizophrenia and animal models of the disease, our results are of relevance regarding the involvement of BDNF in its pathogenesis. On the other hand, they suggest that the effect of perinatal hypoxia on long-term brain abnormalities is complex, ranging from protective to deleterious actions, and may critically depend on the degree of hypoxia. Therefore, future studies may refine existing hypoxia protocols to better understand neurodevelopmental consequences associated with schizophrenia.
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Affiliation(s)
- Juan M Lima-Ojeda
- RG Animal Models in Psychiatry, Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Heidelberg, Germany.,Department of Psychiatry and Psychotherapy, University of Regensburg, Regensburg, Germany
| | - Anne S Mallien
- RG Animal Models in Psychiatry, Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Heidelberg, Germany
| | - Christiane Brandwein
- RG Animal Models in Psychiatry, Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Heidelberg, Germany
| | - Undine E Lang
- Department of Psychiatry (UPK), University of Basel, Wilhelm Klein-Strasse 27, 4012, Basel, Switzerland
| | - Dimitri Hefter
- RG Animal Models in Psychiatry, Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Heidelberg, Germany
| | - Dragos Inta
- RG Animal Models in Psychiatry, Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Heidelberg, Germany. .,Department of Psychiatry (UPK), University of Basel, Wilhelm Klein-Strasse 27, 4012, Basel, Switzerland.
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24
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More CE, Papp C, Harsanyi S, Gesztelyi R, Mikaczo A, Tajti G, Kardos L, Seres I, Lorincz H, Csapo K, Zsuga J. Altered irisin/BDNF axis parallels excessive daytime sleepiness in obstructive sleep apnea patients. Respir Res 2019; 20:67. [PMID: 30952206 PMCID: PMC6449996 DOI: 10.1186/s12931-019-1033-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Accepted: 03/26/2019] [Indexed: 02/08/2023] Open
Abstract
STUDY OBJECTIVES Obstructive sleep apnea hypopnea syndrome (OSAHS) is a sleep-related breathing disorder, characterized by excessive daytime sleepiness (EDS), paralleled by intermittent collapse of the upper airway. EDS may be the symptom of OSAHS per se but may also be due to the alteration of central circadian regulation. Irisin is a putative myokine and has been shown to induce BDNF expression in several sites of the brain. BDNF is a key factor regulating photic entrainment and consequent circadian alignment and adaptation to the environment. Therefore, we hypothesized that EDS accompanying OSAHS is reflected by alteration of irisin/BDNF axis. METHODS Case history, routine laboratory parameters, serum irisin and BDNF levels, polysomnographic measures and Epworth Sleepiness Scale questionnaire (ESS) were performed in a cohort of OSAHS patients (n = 69). Simple and then multiple linear regression was used to evaluate data. RESULTS We found that EDS reflected by the ESS is associated with higher serum irisin and BDNF levels; β: 1.53; CI: 0.35, 6.15; p = 0.012 and β: 0.014; CI: 0.0.005, 0.023; p = 0.02, respectively. Furthermore, influence of irisin and BDNF was significant even if the model accounted for their interaction (p = 0.006 for the terms serum irisin, serum BDNF and their interaction). Furthermore, a concentration-dependent effect of both serum irisin and BDNF was evidenced with respect to their influence on the ESS. CONCLUSIONS These results suggest that the irisin-BDNF axis influences subjective daytime sleepiness in OSAS patients reflected by the ESS. These results further imply the possible disruption of the circadian regulation in OSAHS. Future interventional studies are needed to confirm this observation.
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Affiliation(s)
- Csaba E More
- Department of Psychiatry, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen, 4032, Hungary
| | - Csaba Papp
- Department of Health Systems Management and Quality Management for Health Care, Faculty of Public Health, University of Debrecen, Nagyerdei krt. 98, Debrecen, 4032, Hungary
| | - Szilvia Harsanyi
- Department of Health Systems Management and Quality Management for Health Care, Faculty of Public Health, University of Debrecen, Nagyerdei krt. 98, Debrecen, 4032, Hungary
| | - Rudolf Gesztelyi
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen, 4032, Hungary
| | - Angela Mikaczo
- Department of Pulmonology, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen, 4032, Hungary
| | - Gabor Tajti
- Department of Health Systems Management and Quality Management for Health Care, Faculty of Public Health, University of Debrecen, Nagyerdei krt. 98, Debrecen, 4032, Hungary
| | - Laszlo Kardos
- Institute of Clinical Pharmacology, Infectious Diseases and Allergology, Kenezy Gyula Teaching County Hospital and Outpatient Clinic, Bartok Bela ut 2-26, Debrecen, 4031, Hungary
| | - Ildiko Seres
- Department of Internal Medicine, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen, 4032, Hungary
| | - Hajnalka Lorincz
- Department of Internal Medicine, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen, 4032, Hungary
| | - Krisztina Csapo
- Department of Neurology, Faculty of Medicine, University of Debrecen, Moricz Zsigmond krt. 22, Debrecen, 4032, Hungary
| | - Judit Zsuga
- Department of Health Systems Management and Quality Management for Health Care, Faculty of Public Health, University of Debrecen, Nagyerdei krt. 98, Debrecen, 4032, Hungary.
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25
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Zsuga J, More CE, Erdei T, Papp C, Harsanyi S, Gesztelyi R. Blind Spot for Sedentarism: Redefining the Diseasome of Physical Inactivity in View of Circadian System and the Irisin/BDNF Axis. Front Neurol 2018; 9:818. [PMID: 30333788 PMCID: PMC6176117 DOI: 10.3389/fneur.2018.00818] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 09/10/2018] [Indexed: 12/18/2022] Open
Abstract
Introduction: The term "diseasome of physical inactivity" was coined by Pedersen to explain clustering of chronic diseases linked to physical inactivity. Accordingly, physical inactivity per se contributes to the accumulation of visceral fat, which, generates chronic low-grade systemic inflammation, contributes to emergence of chronic, non-communicable diseases. Diversity of these disorders posits the possible involvement of a supraphysiological system. Methods: Hypothesis driven literature search and deductive reasoning was used to review relevant literature and formulate a novel theory. Results: We have identified the circadian system, omnipresent in virtually every cell, as a possible vehicle for brain muscle crosstalk, explaining some aspects of the diseasome of physical inactivity This system is hierarchically organized, with the suprachiasmatic nucleus (SCN) being the master clock that entrains to the dark/light cycle and synchronizes subsidiary molecular clocks in the periphery. Insufficient photic entrainment also causes chronic disease evolution. The recently identified irisin, was shown to induce brain-derived neurotrophic factor (BDNF) production in several brain areas. BDNF assumes significant role in gating light's influence in the retinohypothalamic synapse, by having a permissive effect on glutamate signal transduction underlying photic entrainment. Conclusions: Here we provide theoretical evidence to support the hypothesis that irisin may facilitate photic entrainment of the SCN, via BDNF. By this irisin opens up possible pathways for peripheral non-photic entrainment signals to exert influence on the master clock that is otherwise resistant to these. Furthermore, we suggest that intertwining processes of circadian, redox, inflammatory, and myokine systems lay underneath the diseasome of physical inactivity.
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Affiliation(s)
- Judit Zsuga
- Department of Health System Management and Quality Management in Health Care, Faculty of Public Health, University of Debrecen, Debrecen, Hungary
| | - Csaba E. More
- Department of Psychiatry, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Tamas Erdei
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Csaba Papp
- Department of Health System Management and Quality Management in Health Care, Faculty of Public Health, University of Debrecen, Debrecen, Hungary
| | - Szilvia Harsanyi
- Department of Health System Management and Quality Management in Health Care, Faculty of Public Health, University of Debrecen, Debrecen, Hungary
| | - Rudolf Gesztelyi
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
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26
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Singer W, Manthey M, Panford-Walsh R, Matt L, Geisler HS, Passeri E, Baj G, Tongiorgi E, Leal G, Duarte CB, Salazar IL, Eckert P, Rohbock K, Hu J, Strotmann J, Ruth P, Zimmermann U, Rüttiger L, Ott T, Schimmang T, Knipper M. BDNF-Live-Exon-Visualization (BLEV) Allows Differential Detection of BDNF Transcripts in vitro and in vivo. Front Mol Neurosci 2018; 11:325. [PMID: 30319348 PMCID: PMC6170895 DOI: 10.3389/fnmol.2018.00325] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 08/22/2018] [Indexed: 12/16/2022] Open
Abstract
Bdnf exon-IV and exon-VI transcripts are driven by neuronal activity and are involved in pathologies related to sleep, fear or memory disorders. However, how their differential transcription translates activity changes into long-lasting network changes is elusive. Aiming to trace specifically the network controlled by exon-IV and -VI derived BDNF during activity-dependent plasticity changes, we generated a transgenic reporter mouse for B DNF- l ive- e xon- v isualization (BLEV), in which expression of Bdnf exon-IV and -VI can be visualized by co-expression of CFP and YFP. CFP and YFP expression was differentially activated and targeted in cell lines, primary cultures and BLEV reporter mice without interfering with BDNF protein synthesis. CFP and YFP expression, moreover, overlapped with BDNF protein expression in defined hippocampal neuronal, glial and vascular locations in vivo. So far, activity-dependent BDNF cannot be explicitly monitored independent of basal BDNF levels. The BLEV reporter mouse therefore provides a new model, which can be used to test whether stimulus-induced activity-dependent changes in BDNF expression are instrumental for long-lasting plasticity modifications.
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Affiliation(s)
- Wibke Singer
- Department of Otolaryngology, Tübingen Hearing Research Centre (THRC), Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Marie Manthey
- Department of Otolaryngology, Tübingen Hearing Research Centre (THRC), Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Rama Panford-Walsh
- Department of Otolaryngology, Tübingen Hearing Research Centre (THRC), Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Lucas Matt
- Department of Pharmacology, Institute of Pharmacy, Toxicology and Clinical Pharmacy, University of Tübingen, Tübingen, Germany
| | - Hyun-Soon Geisler
- Department of Otolaryngology, Tübingen Hearing Research Centre (THRC), Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Eleonora Passeri
- Department of Otolaryngology, Tübingen Hearing Research Centre (THRC), Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Gabriele Baj
- B.R.A.I.N. Centre for Neuroscience, Department of Life Sciences, University of Trieste, Trieste, Italy
| | - Enrico Tongiorgi
- B.R.A.I.N. Centre for Neuroscience, Department of Life Sciences, University of Trieste, Trieste, Italy
| | - Graciano Leal
- Centre for Neuroscience and Cell Biology (CNC), Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - Carlos B. Duarte
- Centre for Neuroscience and Cell Biology (CNC), Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - Ivan L. Salazar
- Centre for Neuroscience and Cell Biology (CNC), Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - Philipp Eckert
- Department of Otolaryngology, Tübingen Hearing Research Centre (THRC), Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Karin Rohbock
- Department of Otolaryngology, Tübingen Hearing Research Centre (THRC), Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Jing Hu
- Centre for Integrative Neuroscience (CIN), University of Tübingen, Tübingen, Germany
| | - Jörg Strotmann
- Department of Physiology, Institute of Physiology, University of Hohenheim, Stuttgart, Germany
| | - Peter Ruth
- Department of Pharmacology, Institute of Pharmacy, Toxicology and Clinical Pharmacy, University of Tübingen, Tübingen, Germany
| | - Ulrike Zimmermann
- Department of Otolaryngology, Tübingen Hearing Research Centre (THRC), Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Lukas Rüttiger
- Department of Otolaryngology, Tübingen Hearing Research Centre (THRC), Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Thomas Ott
- Transgenic Facility Tübingen, University of Tübingen, Tübingen, Germany
| | - Thomas Schimmang
- Instituto de Biologíay Genética Molecular, Universidad de Valladolid y Consejo Superior de Investigaciones Científicas, Valladolid, Spain
| | - Marlies Knipper
- Department of Otolaryngology, Tübingen Hearing Research Centre (THRC), Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
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27
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Matt L, Eckert P, Panford-Walsh R, Geisler HS, Bausch AE, Manthey M, Müller NIC, Harasztosi C, Rohbock K, Ruth P, Friauf E, Ott T, Zimmermann U, Rüttiger L, Schimmang T, Knipper M, Singer W. Visualizing BDNF Transcript Usage During Sound-Induced Memory Linked Plasticity. Front Mol Neurosci 2018; 11:260. [PMID: 30127717 PMCID: PMC6089339 DOI: 10.3389/fnmol.2018.00260] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 07/12/2018] [Indexed: 12/14/2022] Open
Abstract
Activity-dependent BDNF (brain-derived neurotrophic factor) expression is hypothesized to be a cue for the context-specificity of memory formation. So far, activity-dependent BDNF cannot be explicitly monitored independently of basal BDNF levels. We used the BLEV (BDNF-live-exon-visualization) reporter mouse to specifically detect activity-dependent usage of Bdnf exon-IV and -VI promoters through bi-cistronic co-expression of CFP and YFP, respectively. Enriching acoustic stimuli led to improved peripheral and central auditory brainstem responses, increased Schaffer collateral LTP, and enhanced performance in the Morris water maze. Within the brainstem, neuronal activity was increased and accompanied by a trend for higher expression levels of Bdnf exon-IV-CFP and exon-VI-YFP transcripts. In the hippocampus BDNF transcripts were clearly increased parallel to changes in parvalbumin expression and were localized to specific neurons and capillaries. Severe acoustic trauma, in contrast, elevated neither Bdnf transcript levels, nor auditory responses, parvalbumin or LTP. Together, this suggests that critical sensory input is essential for recruitment of activity-dependent auditory-specific BDNF expression that may shape network adaptation.
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Affiliation(s)
- Lucas Matt
- Department of Pharmacology, Institute of Pharmacy, Toxicology, and Clinical Pharmacy, University of Tübingen, Tübingen, Germany
| | - Philipp Eckert
- Department of Otolaryngology, Tübingen Hearing Research Centre, Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Rama Panford-Walsh
- Department of Otolaryngology, Tübingen Hearing Research Centre, Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Hyun-Soon Geisler
- Department of Otolaryngology, Tübingen Hearing Research Centre, Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Anne E Bausch
- Department of Pharmacology, Institute of Pharmacy, Toxicology, and Clinical Pharmacy, University of Tübingen, Tübingen, Germany
| | - Marie Manthey
- Department of Otolaryngology, Tübingen Hearing Research Centre, Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Nicolas I C Müller
- Animal Physiology Group, Department of Biology, University of Kaiserslautern, Kaiserslautern, Germany
| | - Csaba Harasztosi
- Section of Physiological Acoustics and Communication, Department of Otolaryngology, Tübingen Hearing Research Center, University of Tübingen, Tübingen, Germany
| | - Karin Rohbock
- Department of Otolaryngology, Tübingen Hearing Research Centre, Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Peter Ruth
- Department of Pharmacology, Institute of Pharmacy, Toxicology, and Clinical Pharmacy, University of Tübingen, Tübingen, Germany
| | - Eckhard Friauf
- Animal Physiology Group, Department of Biology, University of Kaiserslautern, Kaiserslautern, Germany
| | - Thomas Ott
- Transgenic Facility Tübingen, University of Tübingen, Tübingen, Germany
| | - Ulrike Zimmermann
- Department of Otolaryngology, Tübingen Hearing Research Centre, Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Lukas Rüttiger
- Department of Otolaryngology, Tübingen Hearing Research Centre, Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Thomas Schimmang
- Instituto de Biologíay Genética Molecular, Universidad de Valladolid, Consejo Superior de Investigaciones Científicas (CSIC), Valladolid, Spain
| | - Marlies Knipper
- Department of Otolaryngology, Tübingen Hearing Research Centre, Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Wibke Singer
- Department of Otolaryngology, Tübingen Hearing Research Centre, Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
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28
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Yang J, Park KW, Cho S. Inhibition of the CD36 receptor reduces visceral fat accumulation and improves insulin resistance in obese mice carrying the BDNF- Val66Met variant. J Biol Chem 2018; 293:13338-13348. [PMID: 29914985 DOI: 10.1074/jbc.ra118.002405] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 06/12/2018] [Indexed: 01/09/2023] Open
Abstract
Obesity-induced metabolic dysfunctions increase the risk for vascular diseases, including type II diabetes and stroke. Managing obesity is of interest to address the worldwide health problem; however, the role of genetic variability in human obesity development and specific targets for obesity-related metabolic disease have not been thoroughly studied. A SNP in the brain-derived neurotropic factor (BDNF) gene that results in the substitution of a valine with a methionine at codon 66 (Val66Met) occurs with a high frequency in humans. This study addressed the effect of genetic variability in developing obesity and the efficacy of the inhibition of cluster of differentiation 36 (CD36), a multifunctional receptor implicated in obesity and insulin resistance, in WT mice and mice with the BDNF Val66Met variant. CD36 inhibition by salvionolic acid B (SAB) in diet-induced obese WT mice reduced visceral fat accumulation and improved insulin resistance. The benefit of SAB was abrogated in CD36 knockout mice, showing the specificity of SAB. In addition, mice with the Val66Met variant in both alleles (BDNFM/M) fed a high-fat diet exhibited extreme obesity with increased CD36 gene and protein levels in macrophages. Chronic SAB treatment in BDNFM/M mice significantly decreased visceral fat accumulation and improved insulin resistance. Notably, the effect of SAB was greater in the extremely obese BDNFM/M mice compared with the WT mice. The study demonstrated a link between BDNF Val66Met and elevated CD36 expression and suggested that CD36 inhibition may be a potential strategy to improve metabolic dysfunctions and to normalize risk factors for vascular diseases in the obese population.
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Affiliation(s)
- Jiwon Yang
- From the Burke Medical Research Institute, White Plains, New York 10605 and
| | - Keun Woo Park
- From the Burke Medical Research Institute, White Plains, New York 10605 and
| | - Sunghee Cho
- From the Burke Medical Research Institute, White Plains, New York 10605 and .,the Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, New York 10065
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29
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Mattson MP, Moehl K, Ghena N, Schmaedick M, Cheng A. Intermittent metabolic switching, neuroplasticity and brain health. Nat Rev Neurosci 2018; 19:63-80. [PMID: 29321682 PMCID: PMC5913738 DOI: 10.1038/nrn.2017.156] [Citation(s) in RCA: 287] [Impact Index Per Article: 47.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
During evolution, individuals whose brains and bodies functioned well in a fasted state were successful in acquiring food, enabling their survival and reproduction. With fasting and extended exercise, liver glycogen stores are depleted and ketones are produced from adipose-cell-derived fatty acids. This metabolic switch in cellular fuel source is accompanied by cellular and molecular adaptations of neural networks in the brain that enhance their functionality and bolster their resistance to stress, injury and disease. Here, we consider how intermittent metabolic switching, repeating cycles of a metabolic challenge that induces ketosis (fasting and/or exercise) followed by a recovery period (eating, resting and sleeping), may optimize brain function and resilience throughout the lifespan, with a focus on the neuronal circuits involved in cognition and mood. Such metabolic switching impacts multiple signalling pathways that promote neuroplasticity and resistance of the brain to injury and disease.
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Affiliation(s)
- Mark P Mattson
- Laboratory of Neurosciences, National Institute on Aging Intramural Research Program, Baltimore, Maryland 21224, USA
- Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA
| | - Keelin Moehl
- Laboratory of Neurosciences, National Institute on Aging Intramural Research Program, Baltimore, Maryland 21224, USA
| | - Nathaniel Ghena
- Laboratory of Neurosciences, National Institute on Aging Intramural Research Program, Baltimore, Maryland 21224, USA
| | - Maggie Schmaedick
- Laboratory of Neurosciences, National Institute on Aging Intramural Research Program, Baltimore, Maryland 21224, USA
| | - Aiwu Cheng
- Laboratory of Neurosciences, National Institute on Aging Intramural Research Program, Baltimore, Maryland 21224, USA
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30
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Wu Y, Huang XF, Bell C, Yu Y. Ginsenoside Rb1 improves leptin sensitivity in the prefrontal cortex in obese mice. CNS Neurosci Ther 2017; 24:98-107. [PMID: 29130652 DOI: 10.1111/cns.12776] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Revised: 10/17/2017] [Accepted: 10/18/2017] [Indexed: 01/01/2023] Open
Abstract
AIM Obesity impairs leptin-induced regulation of brain-derived neurotrophic factor (BDNF) expression and synaptogenesis, which has been considered to be associated with the incidence of neuronal degenerative diseases, cognitive decline, and depression. Ginsenoside Rb1 (Rb1), a major bioactive component of ginseng, is known to have an antiobesity effect and improve cognition. This study examined whether Rb1 can improve central leptin effects on BDNF expression and synaptogenesis in the prefrontal cortex during obesity using an in vivo and an in vitro model. RESULT Ginsenoside Rb1 (Rb1) chronic treatment improved central leptin sensitivity, leptin-JAK2-STAT3 signaling, and leptin-induced regulation of BDNF expression in the prefrontal cortex of high-fat diet-induced obese mice. In cultured prefrontal cortical neurons, palmitic acid, the saturated fat, impaired leptin-induced BDNF expression, reduced the immunoreactivity and mRNA expression of synaptic proteins, and impaired leptin-induced neurite outgrowth and synaptogenesis. Importantly, Rb1 significantly prevented these pernicious effects induced by palmitic acid. CONCLUSION These results indicate that Rb1 reverses central leptin resistance and improves leptin-BDNF-neurite outgrowth and synaptogenesis in the prefrontal cortical neurons. Thus, Rb1 supplementation may be a beneficial avenue to treat obesity-associated neurodegenerative disorders.
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Affiliation(s)
- Yizhen Wu
- School of Medicine, University of Wollongong, and Illawarra Health and Medical Research Institute, Wollongong, NSW, Australia
| | - Xu-Feng Huang
- School of Medicine, University of Wollongong, and Illawarra Health and Medical Research Institute, Wollongong, NSW, Australia.,Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Christopher Bell
- School of Medicine, University of Wollongong, and Illawarra Health and Medical Research Institute, Wollongong, NSW, Australia
| | - Yinghua Yu
- School of Medicine, University of Wollongong, and Illawarra Health and Medical Research Institute, Wollongong, NSW, Australia.,Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, Jiangsu, China
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31
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Kim E, Lim SM, Kim MS, Yoo SH, Kim Y. Phyllodulcin, a Natural Sweetener, Regulates Obesity-Related Metabolic Changes and Fat Browning-Related Genes of Subcutaneous White Adipose Tissue in High-Fat Diet-Induced Obese Mice. Nutrients 2017; 9:nu9101049. [PMID: 28934139 PMCID: PMC5691666 DOI: 10.3390/nu9101049] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Revised: 08/25/2017] [Accepted: 09/18/2017] [Indexed: 11/21/2022] Open
Abstract
Phyllodulcin is a natural sweetener found in Hydrangea macrophylla var. thunbergii. This study investigated whether phyllodulcin could improve metabolic abnormalities in high-fat diet (HFD)-induced obese mice. Animals were fed a 60% HFD for 6 weeks to induce obesity, followed by 7 weeks of supplementation with phyllodulcin (20 or 40 mg/kg body weight (b.w.)/day). Stevioside (40 mg/kg b.w./day) was used as a positive control. Phyllodulcin supplementation reduced subcutaneous fat mass, levels of plasma lipids, triglycerides, total cholesterol, and low-density lipoprotein cholesterol and improved the levels of leptin, adiponectin, and fasting blood glucose. In subcutaneous fat tissues, supplementation with stevioside or phyllodulcin significantly decreased mRNA expression of lipogenesis-related genes, including CCAAT/enhancer-binding protein α (C/EBPα), peroxisome proliferator activated receptor γ (PPARγ), and sterol regulatory element-binding protein-1C (SREBP-1c) compared to the high-fat group. Phyllodulcin supplementation significantly increased the expression of fat browning-related genes, including PR domain containing 16 (Prdm16), uncoupling protein 1 (UCP1), and peroxisome proliferator-activated receptor γ coactivator 1-α (PGC-1α), compared to the high-fat group. Hypothalamic brain-derived neurotrophic factor-tropomyosin receptor kinase B (BDNF-TrkB) signaling was upregulated by phyllodulcin supplementation. In conclusion, phyllodulcin is a potential sweetener that could be used to combat obesity by regulating levels of leptin, fat browning-related genes, and hypothalamic BDNF-TrkB signaling.
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Affiliation(s)
- Eunju Kim
- Department of Nutritional Science and Food Management, Ewha Womans University, Seoul 03760, Korea.
| | - Soo-Min Lim
- Department of Nutritional Science and Food Management, Ewha Womans University, Seoul 03760, Korea.
| | - Min-Soo Kim
- Department of Food Science and Biotechnology, and Carbohydrate Bioproduct Research Center, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 05006, Korea.
| | - Sang-Ho Yoo
- Department of Food Science and Biotechnology, and Carbohydrate Bioproduct Research Center, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 05006, Korea.
| | - Yuri Kim
- Department of Nutritional Science and Food Management, Ewha Womans University, Seoul 03760, Korea.
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BDNF/TrkB signaling mediates the anorectic action of estradiol in the nucleus tractus solitarius. Oncotarget 2017; 8:84028-84038. [PMID: 29137402 PMCID: PMC5663574 DOI: 10.18632/oncotarget.21062] [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: 07/18/2017] [Accepted: 08/31/2017] [Indexed: 01/11/2023] Open
Abstract
Although compelling evidence indicates that estradiol (E2) acts in the nucleus tractus solitarius (NTS) to reduce food intake, the underlying mechanisms are largely unknown. We now report that estrogen's anorectic action occurs through enhancing the strength of brain-derived neurotrophic factor (BDNF) and tropomyosin receptor kinase (TrkB) signaling in the NTS. Intra-4th-ventricular administration of a low dose of BDNF reduced food intake to a greater extent in ovariectomized (OVX) rats cyclically treated with E2 than in vehicle-treated OVX rats, implying that cyclic E2 replacement increases BDNF's satiating potency. OVX significantly decreased bdnf gene expression in the NTS, and this was reversed by cyclic replacement of E2. Treatment of cultured primary neuronal cells from embryonic rat brainstem with E2 or PPT (ERα agonist), but not with DPN (ERβ agonist), significantly increased bdnf mRNA levels, indicating that ERα is the primary receptor mediating E2's stimulatory effect on bdnf gene expression. Administration of the selective TrkB antagonist, ANA-12, directly into the NTS significantly attenuated E2-induced reductions of food intake and body weight gain in OVX rats, indicating that TrkB receptor activation is necessary for E2's anorectic effect. Finally, relative to controls, OVX mice with bdnf gene knockdown specifically in the NTS had a blunted feeding response to E2. These data collectively imply that BDNF/TrkB receptor signaling in the NTS is a downstream mediator of E2 in the control of energy intake.
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Panetta P, Berry A, Bellisario V, Capoccia S, Raggi C, Luoni A, Longo L, Riva MA, Cirulli F. Long-Term Sex-Dependent Vulnerability to Metabolic challenges in Prenatally Stressed Rats. Front Behav Neurosci 2017; 11:113. [PMID: 28706476 PMCID: PMC5489562 DOI: 10.3389/fnbeh.2017.00113] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Accepted: 05/26/2017] [Indexed: 12/19/2022] Open
Abstract
Prenatal stress (PNS) might affect the developmental programming of adult chronic diseases such as metabolic and mood disorders. The molecular mechanisms underlying such regulations may rely upon long-term changes in stress-responsive effectors such as Brain-Derived Neurotrophic Factor (BDNF) that can affect neuronal plasticity underlying mood disorders and may also play a role in metabolic regulation. Based upon previous data, we hypothesized that PNS might lead to greater vulnerability to an obesogenic challenge experienced at adulthood. In order to investigate our hypothesis, pregnant Sprague-Dawley female rats underwent a chronic procedure of restraint stress during the last week of gestation. The adult offspring were then challenged with a high fat diet (HFD) over 8 weeks and tested for metabolic and emotional endpoints. Moreover, brain specific changes in Bdnf expression levels were also assessed. Overall, HFD resulted in increased caloric intake, insulin resistance, impaired glucose tolerance and higher circulating levels of leptin, while PNS increased the leptin/adiponectin ratio, an index of metabolic risk in adult male subjects. Interestingly, HFD consumption increased anxiety-like behaviors in the Elevated Plus Maze, particularly in males, and this effect was buffered by PNS. Levels of Bdnf were finely modulated by PNS and HFD in a region- and sex-dependent fashion: female offspring overall showed greater plasticity, possibly mediated through increased total Bdnf mRNA expression both in the hippocampus and in the hypothalamus. In conclusion, while the experience of maternal stress during intrauterine life promotes metabolic dysfunction induced by a HFD at adulthood, the interaction between PNS and HFD is positive in male subjects, and in agreement with the match-mismatch hypothesis, resulting in a reduction of anxious behaviors.
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Affiliation(s)
- Pamela Panetta
- Center for Behavioral Sciences and Mental Health, Istituto Superiore di SanitàRome, Italy
| | - Alessandra Berry
- Center for Behavioral Sciences and Mental Health, Istituto Superiore di SanitàRome, Italy
| | - Veronica Bellisario
- Center for Behavioral Sciences and Mental Health, Istituto Superiore di SanitàRome, Italy
| | - Sara Capoccia
- Center for Behavioral Sciences and Mental Health, Istituto Superiore di SanitàRome, Italy
| | - Carla Raggi
- Center for Behavioral Sciences and Mental Health, Istituto Superiore di SanitàRome, Italy
| | - Alessia Luoni
- Department of Pharmacological and Biomolecular Sciences, University of MilanMilan, Italy
| | - Linda Longo
- Department of Pharmacological and Biomolecular Sciences, University of MilanMilan, Italy
| | - Marco A Riva
- Department of Pharmacological and Biomolecular Sciences, University of MilanMilan, Italy
| | - Francesca Cirulli
- Center for Behavioral Sciences and Mental Health, Istituto Superiore di SanitàRome, Italy
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Effects of Src Kinase Inhibition on Expression of Protein Tyrosine Phosphatase 1B after Brain Hypoxia in a Piglet Animal Model. Mediators Inflamm 2017. [PMID: 28626342 PMCID: PMC5463160 DOI: 10.1155/2017/2810295] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background Protein tyrosine phosphatases (PTPs) in conjunction with protein tyrosine kinases (PTKs) regulate cellular processes by posttranslational modifications of signal transduction proteins. PTP nonreceptor type 1B (PTP-1B) is an enzyme of the PTP family. We have previously shown that hypoxia induces an increase in activation of a class of nonreceptor PTK, the Src kinases. In the present study, we investigated the changes that occur in the expression of PTP-1B in the cytosolic component of the brain of newborn piglets acutely after hypoxia as well as long term for up to 2 weeks. Methods Newborn piglets were divided into groups: normoxia, hypoxia, hypoxia followed by 1 day and 15 days in FiO2 0.21, and hypoxia pretreated with Src kinase inhibitor PP2, prior to hypoxia followed by 1 day and 15 days. Hypoxia was achieved by providing 7% FiO2 for 1 hour and PTP-1B expression was measured via immunoblotting. Results PTP-1B increased posthypoxia by about 30% and persisted for 2 weeks while Src kinase inhibition attenuated the expected PTP-1B-increased expression. Conclusions Our study suggests that Src kinase mediates a hypoxia-induced increased PTP-1B expression.
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Dinoff A, Herrmann N, Swardfager W, Lanctôt KL. The effect of acute exercise on blood concentrations of brain-derived neurotrophic factor in healthy adults: a meta-analysis. Eur J Neurosci 2017; 46:1635-1646. [PMID: 28493624 DOI: 10.1111/ejn.13603] [Citation(s) in RCA: 170] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 04/20/2017] [Accepted: 05/01/2017] [Indexed: 12/12/2022]
Abstract
It has been hypothesized that one mechanism through which physical activity provides benefits to cognition and mood is via increasing brain-derived neurotrophic factor (BDNF) concentrations. Some studies have reported immediate benefits to mood and various cognitive domains after a single session of exercise. This meta-analysis sought to determine the effect of a single exercise session on concentrations of BDNF in peripheral blood, in order to evaluate the potential role of BDNF in mediating the beneficial effects of exercise on brain health. MEDLINE, Embase, PsycINFO, SPORTDiscus, Rehabilitation & Sports Medicine Source, and CINAHL databases were searched for original, peer-reviewed reports of peripheral blood BDNF concentrations before and after acute exercise interventions. Risk of bias within studies was assessed using standardized criteria. Standardized mean differences (SMDs) were generated from random effects models. Risk of publication bias was assessed using a funnel plot and Egger's test. Potential sources of heterogeneity were explored in subgroup analyses. In 55 studies that met inclusion criteria, concentrations of peripheral blood BDNF were higher after exercise (SMD = 0.59, 95% CI: 0.46-0.72, P < 0.001). In meta-regression analysis, greater duration of exercise was associated with greater increases in BDNF. Subgroup analyses revealed an effect in males but not in females, and a greater BDNF increase in plasma than serum. Acute exercise increased BDNF concentrations in the peripheral blood of healthy adults. This effect was influenced by exercise duration and may be different across genders.
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Affiliation(s)
- Adam Dinoff
- Neuropsychopharmacology Research Group, Hurvitz Brain Sciences Program, Sunnybrook Research Institute, 2075 Bayview Avenue, Toronto, ON, M4N 3M5, Canada.,Department of Pharmacology and Toxicology, Faculty of Medicine, University of Toronto, 1 King's College Circle, Toronto, ON, Canada
| | - Nathan Herrmann
- Neuropsychopharmacology Research Group, Hurvitz Brain Sciences Program, Sunnybrook Research Institute, 2075 Bayview Avenue, Toronto, ON, M4N 3M5, Canada.,Department of Psychiatry, Faculty of Medicine, University of Toronto, 250 College Street, Toronto, ON, M5T 1R8, Canada
| | - Walter Swardfager
- Neuropsychopharmacology Research Group, Hurvitz Brain Sciences Program, Sunnybrook Research Institute, 2075 Bayview Avenue, Toronto, ON, M4N 3M5, Canada.,Department of Pharmacology and Toxicology, Faculty of Medicine, University of Toronto, 1 King's College Circle, Toronto, ON, Canada
| | - Krista L Lanctôt
- Neuropsychopharmacology Research Group, Hurvitz Brain Sciences Program, Sunnybrook Research Institute, 2075 Bayview Avenue, Toronto, ON, M4N 3M5, Canada.,Department of Pharmacology and Toxicology, Faculty of Medicine, University of Toronto, 1 King's College Circle, Toronto, ON, Canada.,Department of Psychiatry, Faculty of Medicine, University of Toronto, 250 College Street, Toronto, ON, M5T 1R8, Canada
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Obuchowicz E, Nowacka M, Paul-Samojedny M, Bielecka-Wajdman AM, Małecki A. Sex differences in the effect of acute peripheral IL-1β administration on the brain and serum BDNF and VEGF expression in rats. Cytokine 2017; 90:6-13. [DOI: 10.1016/j.cyto.2016.10.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Revised: 09/07/2016] [Accepted: 10/03/2016] [Indexed: 11/24/2022]
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Eyileten C, Kaplon-Cieslicka A, Mirowska-Guzel D, Malek L, Postula M. Antidiabetic Effect of Brain-Derived Neurotrophic Factor and Its Association with Inflammation in Type 2 Diabetes Mellitus. J Diabetes Res 2017; 2017:2823671. [PMID: 29062839 PMCID: PMC5618763 DOI: 10.1155/2017/2823671] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Revised: 07/12/2017] [Accepted: 08/22/2017] [Indexed: 01/07/2023] Open
Abstract
Brain-derived neurotrophic factor (BDNF) is a neurotrophin, which plays an important role in the central nervous system, and systemic or peripheral inflammatory conditions, such as acute coronary syndrome and type 2 diabetes mellitus (T2DM). BDNF is also expressed in several nonneuronal tissues, and platelets are the major source of peripheral BDNF. Here, we reviewed the potential role of BDNF in platelet reactivity in T2DM and its association with selected inflammatory and platelet activation mediators. Besides that, we focused on adipocytokines such as leptin, resistin, and adiponectin which are considered to take part in inflammation and both lipid and glucose metabolism in diabetic patients as previous studies showed the relation between adipocytokines and BDNF. We also reviewed the evidences of the antidiabetic effect of BDNF and the association with circulating inflammatory cytokines in T2DM.
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Affiliation(s)
- Ceren Eyileten
- Department of Experimental and Clinical Pharmacology, Medical University of Warsaw, Center for Preclinical Research and Technology CEPT, Warsaw, Poland
| | | | - Dagmara Mirowska-Guzel
- Department of Experimental and Clinical Pharmacology, Medical University of Warsaw, Center for Preclinical Research and Technology CEPT, Warsaw, Poland
| | - Lukasz Malek
- Faculty of Rehabilitation, University of Physical Education, Warsaw, Poland
| | - Marek Postula
- Department of Experimental and Clinical Pharmacology, Medical University of Warsaw, Center for Preclinical Research and Technology CEPT, Warsaw, Poland
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The Effect of Exercise Training on Resting Concentrations of Peripheral Brain-Derived Neurotrophic Factor (BDNF): A Meta-Analysis. PLoS One 2016; 11:e0163037. [PMID: 27658238 PMCID: PMC5033477 DOI: 10.1371/journal.pone.0163037] [Citation(s) in RCA: 175] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 09/01/2016] [Indexed: 12/23/2022] Open
Abstract
Background The mechanisms through which physical activity supports healthy brain function remain to be elucidated. One hypothesis suggests that increased brain-derived neurotrophic factor (BDNF) mediates some cognitive and mood benefits. This meta-analysis sought to determine the effect of exercise training on resting concentrations of BDNF in peripheral blood. Methods MEDLINE, Embase, PsycINFO, SPORTDiscus, Rehabilitation & Sports Medicine Source, and CINAHL databases were searched for original, peer-reviewed reports of peripheral blood BDNF concentrations before and after exercise interventions ≥ 2 weeks. Risk of bias was assessed using standardized criteria. Standardized mean differences (SMDs) were generated from random effects models. Risk of publication bias was assessed using funnel plots and Egger’s test. Potential sources of heterogeneity were explored in subgroup analyses. Results In 29 studies that met inclusion criteria, resting concentrations of peripheral blood BDNF were higher after intervention (SMD = 0.39, 95% CI: 0.17–0.60, p < 0.001). Subgroup analyses suggested a significant effect in aerobic (SMD = 0.66, 95% CI: 0.33–0.99, p < 0.001) but not resistance training (SMD = 0.07, 95% CI: -0.15–0.30, p = 0.52) interventions. No significant difference in effect was observed between males and females, nor in serum vs plasma. Conclusion Aerobic but not resistance training interventions increased resting BDNF concentrations in peripheral blood.
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Catenacci VA, Pan Z, Ostendorf D, Brannon S, Gozansky WS, Mattson MP, Martin B, MacLean PS, Melanson EL, Donahoo WT. A randomized pilot study comparing zero-calorie alternate-day fasting to daily caloric restriction in adults with obesity. Obesity (Silver Spring) 2016; 24:1874-83. [PMID: 27569118 PMCID: PMC5042570 DOI: 10.1002/oby.21581] [Citation(s) in RCA: 188] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Revised: 04/01/2016] [Accepted: 05/02/2016] [Indexed: 12/26/2022]
Abstract
OBJECTIVE To evaluate the safety and tolerability of alternate-day fasting (ADF) and to compare changes in weight, body composition, lipids, and insulin sensitivity index (Si) with those produced by a standard weight loss diet, moderate daily caloric restriction (CR). METHODS Adults with obesity (BMI ≥30 kg/m(2) , age 18-55) were randomized to either zero-calorie ADF (n = 14) or CR (-400 kcal/day, n = 12) for 8 weeks. Outcomes were measured at the end of the 8-week intervention and after 24 weeks of unsupervised follow-up. RESULTS No adverse effects were attributed to ADF, and 93% completed the 8-week ADF protocol. At 8 weeks, ADF achieved a 376 kcal/day greater energy deficit; however, there were no significant between-group differences in change in weight (mean ± SE; ADF -8.2 ± 0.9 kg, CR -7.1 ± 1.0 kg), body composition, lipids, or Si. After 24 weeks of unsupervised follow-up, there were no significant differences in weight regain; however, changes from baseline in % fat mass and lean mass were more favorable in ADF. CONCLUSIONS ADF is a safe and tolerable approach to weight loss. ADF produced similar changes in weight, body composition, lipids, and Si at 8 weeks and did not appear to increase risk for weight regain 24 weeks after completing the intervention.
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Affiliation(s)
- Victoria A. Catenacci
- Division of Endocrinology, Metabolism, and Diabetes, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora CO
- Department of Biostatistics and Informatics, Colorado School of Public Health, Anschutz Health and Wellness Center, University of Colorado Anschutz Medical Campus, Aurora CO
| | - Zhaoxing Pan
- Department of Biostatistics and Informatics, Colorado School of Public Health, Anschutz Health and Wellness Center, University of Colorado Anschutz Medical Campus, Aurora CO
- Children's Hospital Colorado Research Institute, Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora CO
| | - Danielle Ostendorf
- Department of Biostatistics and Informatics, Colorado School of Public Health, Anschutz Health and Wellness Center, University of Colorado Anschutz Medical Campus, Aurora CO
- Department of Epidemiology, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora CO
| | - Sarah Brannon
- Department of Community and Behavioral Health, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, CO
| | | | - Mark P. Mattson
- Laboratory of Neurosciences, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224
- Department of Neuroscience, The Johns Hopkins University School of Medicine, Baltimore, MD 21205
| | - Bronwen Martin
- Laboratory of Clinical Investigation, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224
| | - Paul S. MacLean
- Division of Endocrinology, Metabolism, and Diabetes, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora CO
- Department of Biostatistics and Informatics, Colorado School of Public Health, Anschutz Health and Wellness Center, University of Colorado Anschutz Medical Campus, Aurora CO
| | - Edward L. Melanson
- Division of Endocrinology, Metabolism, and Diabetes, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora CO
- Division of Geriatrics, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora CO
| | - William Troy Donahoo
- Division of Endocrinology, Metabolism, and Diabetes, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora CO
- Kaiser Permanente, Denver, CO
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Mendiola-Precoma J, Berumen LC, Padilla K, Garcia-Alcocer G. Therapies for Prevention and Treatment of Alzheimer's Disease. BIOMED RESEARCH INTERNATIONAL 2016; 2016:2589276. [PMID: 27547756 PMCID: PMC4980501 DOI: 10.1155/2016/2589276] [Citation(s) in RCA: 137] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 05/31/2016] [Accepted: 06/05/2016] [Indexed: 01/11/2023]
Abstract
Alzheimer's disease (AD) is the most common cause of dementia associated with a progressive neurodegenerative disorder, with a prevalence of 44 million people throughout the world in 2015, and this figure is estimated to double by 2050. This disease is characterized by blood-brain barrier disruption, oxidative stress, mitochondrial impairment, neuroinflammation, and hypometabolism; it is related to amyloid-β peptide accumulation and tau hyperphosphorylation as well as a decrease in acetylcholine levels and a reduction of cerebral blood flow. Obesity is a major risk factor for AD, because it induces adipokine dysregulation, which consists of the release of the proinflammatory adipokines and decreased anti-inflammatory adipokines, among other processes. The pharmacological treatments for AD can be divided into two categories: symptomatic treatments such as acetylcholinesterase inhibitors and N-methyl-D-aspartate (NMDA) receptor antagonists and etiology-based treatments such as secretase inhibitors, amyloid binders, and tau therapies. Strategies for prevention of AD through nonpharmacological treatments are associated with lifestyle interventions such as exercise, mental challenges, and socialization as well as caloric restriction and a healthy diet. AD is an important health issue on which all people should be informed so that prevention strategies that minimize the risk of its development may be implemented.
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Affiliation(s)
- J. Mendiola-Precoma
- Laboratorio de Investigación Genética, Facultad de Química, Universidad Autónoma de Querétaro, Cerro de las Campanas S/N, Centro Universitario, 76010 Santiago de Querétaro, QRO, Mexico
| | - L. C. Berumen
- Laboratorio de Investigación Genética, Facultad de Química, Universidad Autónoma de Querétaro, Cerro de las Campanas S/N, Centro Universitario, 76010 Santiago de Querétaro, QRO, Mexico
| | - K. Padilla
- Laboratorio de Investigación Genética, Facultad de Química, Universidad Autónoma de Querétaro, Cerro de las Campanas S/N, Centro Universitario, 76010 Santiago de Querétaro, QRO, Mexico
| | - G. Garcia-Alcocer
- Laboratorio de Investigación Genética, Facultad de Química, Universidad Autónoma de Querétaro, Cerro de las Campanas S/N, Centro Universitario, 76010 Santiago de Querétaro, QRO, Mexico
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Regulation of arcuate genes by developmental exposures to endocrine-disrupting compounds in female rats. Reprod Toxicol 2016; 62:18-26. [PMID: 27103539 DOI: 10.1016/j.reprotox.2016.04.014] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 01/11/2016] [Accepted: 04/15/2016] [Indexed: 01/09/2023]
Abstract
Developmental exposure to endocrine-disrupting compounds (EDCs) alters reproduction and energy homeostasis, both of which are regulated by the arcuate nucleus (ARC). Little is known about the effects of EDC on ARC gene expression. In Experiment #1, pregnant dams were treated with either two doses of bisphenol A (BPA) or oil from embryonic day (E)18-21. Neonates were injected from postnatal day (PND)0-7. Vaginal opening, body weights, and ARC gene expression were measured. Chrm3 (muscarinic receptor 3) and Adipor1 (adiponectin receptor 1) were decreased by BPA. Bdnf (brain-derived neurotropic factor), Igf1 (insulin-like growth factor 1), Htr2c (5-hydroxytryptamine receptor), and Cck2r (cholescystokinin 2 receptor) were impacted. In Experiment #2, females were exposed to BPA, diethylstilbestrol (DES), di(2-ethylhexyl)phthalate, or methoxychlor (MXC) during E11-PND7. MXC and DES advanced the age of vaginal opening and ARC gene expression was impacted. These data indicate that EDCs alter ARC genes involved in reproduction and energy homeostasis in females.
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Montalbano G, Mania M, Guerrera MC, Abbate F, Laurà R, Navarra M, Vega JA, Ciriaco E, Germanà A. Morphological differences in adipose tissue and changes in BDNF/Trkb expression in brain and gut of a diet induced obese zebrafish model. Ann Anat 2015; 204:36-44. [PMID: 26617157 DOI: 10.1016/j.aanat.2015.11.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Revised: 10/14/2015] [Accepted: 11/04/2015] [Indexed: 12/15/2022]
Abstract
Obesity is a multifactorial disease generated by an alteration in balance between energy intake and expenditure, also dependent on genetic and non-genetic factors. Moreover, various nuclei of the hypothalamus receive and process peripheral stimuli from the gastrointestinal tract, controlling food intake and therefore energy balance. Among anorexigenic molecules, brain-derived neurotrophic factor (BDNF) acts through the tyrosine-kinase receptor TrkB. Numerous data demonstrate that the BDNF/TrkB system has a fundamental role in the control of food intake and body weight. Quantitative PCR and immunohistochemistry for both BDNF and TrkB were used to determine changes in levels in the brain and gastro-intestinal tract of an experimental zebrafish model of diet-induced obesity. Overfed animals showed increased weight and body mass index as well as accumulation of adipose tissue in the visceral, subcutaneous and hepatic areas. These changes were concomitant with decreased levels of BDNF mRNA in the gastro-intestinal tract and increased expression of TrkB mRNA in the brain. Overfeeding did not change the density of cells displaying immunoreactivity for BDNF or TrkB in the brain although both were significantly diminished in the gastro-intestinal tract. These results suggest an involvement of the BDNF/TrkB system in the regulation of food intake and energy balance in zebrafish, as in mammals.
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Affiliation(s)
- Giuseppe Montalbano
- Dipartimento di Scienze Veterinarie, 98168 Messina, Italy; Zebrafish Neuromorphology Lab, Università di Messina, Polo Universitario SS. Annunziata, 98168 Messina, Italy.
| | - Manuela Mania
- Dipartimento di Scienze Veterinarie, 98168 Messina, Italy; Zebrafish Neuromorphology Lab, Università di Messina, Polo Universitario SS. Annunziata, 98168 Messina, Italy
| | - Maria Cristina Guerrera
- Dipartimento di Scienze Veterinarie, 98168 Messina, Italy; Zebrafish Neuromorphology Lab, Università di Messina, Polo Universitario SS. Annunziata, 98168 Messina, Italy
| | - Francesco Abbate
- Dipartimento di Scienze Veterinarie, 98168 Messina, Italy; Zebrafish Neuromorphology Lab, Università di Messina, Polo Universitario SS. Annunziata, 98168 Messina, Italy
| | - Rosaria Laurà
- Dipartimento di Scienze Veterinarie, 98168 Messina, Italy; Zebrafish Neuromorphology Lab, Università di Messina, Polo Universitario SS. Annunziata, 98168 Messina, Italy
| | - Michele Navarra
- Dipartimento di Scienza del Farmaco e Prodotti per la Salute, Università di Messina, Polo Universitario SS. Annunziata, 98168 Messina, Italy
| | - Jose A Vega
- Departamento de Morfologia y Biologia Celular, Facultad de Medicina, Universidad de Oviedo, Av de Julián Clavería 6, 33006 Oviedo, España; Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, 5 Poniente, 1670 Talca, Chile
| | - Emilia Ciriaco
- Dipartimento di Scienze Veterinarie, 98168 Messina, Italy; Zebrafish Neuromorphology Lab, Università di Messina, Polo Universitario SS. Annunziata, 98168 Messina, Italy
| | - Antonino Germanà
- Dipartimento di Scienze Veterinarie, 98168 Messina, Italy; Zebrafish Neuromorphology Lab, Università di Messina, Polo Universitario SS. Annunziata, 98168 Messina, Italy
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Prolonged hyperglycemia & hyperinsulinemia increases BDNF mRNA expression in the posterior ventromedial hypothalamus and the dorsomedial hypothalamus of fed female rats. Neuroscience 2015; 303:422-32. [DOI: 10.1016/j.neuroscience.2015.07.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 07/02/2015] [Accepted: 07/05/2015] [Indexed: 12/30/2022]
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Ozek C, Zimmer DJ, De Jonghe BC, Kalb RG, Bence KK. Ablation of intact hypothalamic and/or hindbrain TrkB signaling leads to perturbations in energy balance. Mol Metab 2015; 4:867-80. [PMID: 26629410 PMCID: PMC4632115 DOI: 10.1016/j.molmet.2015.08.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 08/10/2015] [Accepted: 08/11/2015] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVE Brain-derived neurotrophic factor (BDNF) and its receptor, tropomyosin receptor kinase B (TrkB), play a paramount role in the central regulation of energy balance. Despite the substantial body of genetic evidence implicating BDNF- or TrkB-deficiency in human obesity, the critical brain region(s) contributing to the endogenous role of BDNF/TrkB signaling in metabolic control remain unknown. METHODS We assessed the importance of intact hypothalamic or hindbrain TrkB signaling in central regulation of energy balance by generating Nkx2.1-Ntrk2-/- and Phox2b-Ntrk2+/- mice, respectively, and comparing metabolic parameters (body weight, adiposity, food intake, energy expenditure and glucose homeostasis) under high-fat diet or chow fed conditions. RESULTS Our data show that when fed a high-fat diet, male and female Nkx2.1-Ntrk2-/- mice have significantly increased body weight and adiposity that is likely driven by reduced locomotor activity and core body temperature. When maintained on a chow diet, female Nkx2.1-Ntrk2-/- mice exhibit an increased body weight and adiposity phenotype more robust than in males, which is accompanied by hyperphagia that precedes the onset of a body weight difference. In addition, under both diet conditions, Nkx2.1-Ntrk2-/- mice show increased blood glucose, serum insulin and leptin levels. Mice with complete hindbrain TrkB-deficiency (Phox2b-Ntrk2-/-) are perinatal lethal, potentially indicating a vital role for TrkB in visceral motor neurons that control cardiovascular, respiratory, and digestive functions during development. Phox2b-Ntrk2+/- heterozygous mice are similar in body weight, adiposity and glucose homeostasis parameters compared to wild type littermate controls when maintained on a high-fat or chow diet. Interestingly, despite the absence of a body weight difference, Phox2b-Ntrk2+/- heterozygous mice exhibit pronounced hyperphagia. CONCLUSION Taken together, our findings suggest that the hypothalamus is a key brain region involved in endogenous BDNF/TrkB signaling and central metabolic control and that endogenous hindbrain TrkB likely plays a role in modulating food intake and survival of mice. Our findings also show that female mice lacking TrkB in the hypothalamus have a more robust metabolic phenotype.
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Key Words
- Agrp, agouti-related peptide
- BAT, brown adipose tissue
- BDNF
- BDNF, brain-derived neurotrophic factor
- Cidea, cell death-inducing DFFA-like effector a
- Cre, Cre recombinase
- DVC, dorsal vagal complex
- Elovl3, elongation of very long fatty acids-like 3
- GTT, glucose tolerance test
- HFD, high-fat diet
- HPA axis, hypothalamic-pituitary-adrenal axis
- Hindbrain
- Hypothalamus
- LepR, leptin receptor
- Mc4R, melanocortin 4 receptor
- NTS, nucleus of the solitary tract
- Nkx2.1, Nk2 homeobox 1 protein
- Npy, neuropeptide Y
- Obesity
- PVH, paraventricular nucleus of the hypothalamus
- Pgc1α, peroxisome proliferator-activated receptor gamma coactivator 1 alpha
- Phox2b, paired-like homeobox 2b protein
- Pomc, pro-opiomelanocortin
- Pparγ, peroxisome proliferator-activated receptor gamma
- Prdm16, PR domain containing 16
- TrkB
- TrkB, tropomyosin receptor kinase B
- Ucp1, uncoupling protein 1
- VMH, ventromedial nucleus of the hypothalamus
- eWAT, epididymal white adipose tissue
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Affiliation(s)
- Ceren Ozek
- Department of Biomedical Sciences, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Derek J Zimmer
- Department of Biomedical Sciences, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Bart C De Jonghe
- Department of Biobehavioral Health Sciences, School of Nursing, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Robert G Kalb
- Department of Neurology, Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - Kendra K Bence
- Department of Biomedical Sciences, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
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Bonaccorso S, Sodhi M, Li J, Bobo WV, Chen Y, Tumuklu M, Theleritis C, Jayathilake K, Meltzer HY. The brain-derived neurotrophic factor (BDNF) Val66Met polymorphism is associated with increased body mass index and insulin resistance measures in bipolar disorder and schizophrenia. Bipolar Disord 2015; 17:528-35. [PMID: 25874530 DOI: 10.1111/bdi.12294] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Accepted: 12/17/2014] [Indexed: 12/14/2022]
Abstract
OBJECTIVES We tested the hypothesis that a common functional variant in brain-derived neurotrophic factor (BDNF), Val66Met, which has been shown to be associated with increased body mass index (BMI) in schizophrenia (SCZ) and schizoaffective disorder (SAD), is also associated with antipsychotic-induced weight gain in bipolar disorder (BPD). Association of Val66Met with other metabolic measures, including high- and low-density cholesterol, triglycerides, total cholesterol, fasting blood glucose, and hemoglobin A1c, was also tested. METHODS This was a 12-month, prospective, randomized trial of two atypical antipsychotic drugs (APDs) with moderate (risperidone) or high (olanzapine) risk to cause weight gain. Subjects were diagnosed as having BPD (n = 90) and SCZ or SAD (n = 76). RESULTS BMI was significantly greater in all diagnoses for Met66 allele carriers at six months (p = 0.01). Met66 carriers with BPD showed a greater increase in the triglycerides/high-density (HDL) cholesterol ratio (p = 0.01), a key marker for metabolic syndrome related to insulin resistance, and log-triglycerides (p = 0.04), after three or six months of treatment. Met66 carriers had the greatest increase in log-triglycerides (p = 0.03) and triglycerides/HDL cholesterol ratio after three months of treatment with risperidone (p = 0.003), and the highest BMI at six months (p = 0.01). CONCLUSIONS The positive association of BNDF Val66Met with high BMI values replicates previous findings in patients with SCZ and indicates the BDNF Val66Met genotype as a potential risk factor for obesity and insulin resistance measures in patients with BPD receiving antipsychotics as well.
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Affiliation(s)
- Stefania Bonaccorso
- Department of Psychosis Studies, Institute of Psychiatry at the Maudsley, King's College London, London, UK
| | - Monsheel Sodhi
- Department of Pharmacy Practice, University of Illinois, Chicago, IL, USA
| | - Jiang Li
- Department of Psychiatry and Behavioural Sciences, Northwestern University, Chicago, IL, USA
| | | | - Yuejin Chen
- Southern Arizona VA Health Care System, Tucson, AZ, USA
| | - Mevhibe Tumuklu
- Faculty of Medicine, Department of Psychiatry, Gaziosmanpasa University, Tokat, Turkey
| | - Christos Theleritis
- Department of Psychosis Studies, Institute of Psychiatry at the Maudsley, King's College London, London, UK
| | - Karuna Jayathilake
- Department of Psychiatry and Behavioural Sciences, Northwestern University, Chicago, IL, USA
| | - Herbert Y Meltzer
- Department of Psychiatry and Behavioural Sciences, Northwestern University, Chicago, IL, USA
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An JJ, Liao GY, Kinney CE, Sahibzada N, Xu B. Discrete BDNF Neurons in the Paraventricular Hypothalamus Control Feeding and Energy Expenditure. Cell Metab 2015; 22:175-88. [PMID: 26073495 PMCID: PMC4497865 DOI: 10.1016/j.cmet.2015.05.008] [Citation(s) in RCA: 96] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Revised: 03/27/2015] [Accepted: 05/05/2015] [Indexed: 11/24/2022]
Abstract
Brain-derived neurotrophic factor (BDNF) is a key regulator of energy balance; however, its underlying mechanism remains unknown. By analyzing BDNF-expressing neurons in paraventricular hypothalamus (PVH), we have uncovered neural circuits that control energy balance. The Bdnf gene in the PVH was mostly expressed in previously undefined neurons, and its deletion caused hyperphagia, reduced locomotor activity, impaired thermogenesis, and severe obesity. Hyperphagia and reduced locomotor activity were associated with Bdnf deletion in anterior PVH, whereas BDNF neurons in medial and posterior PVH drive thermogenesis by projecting to spinal cord and forming polysynaptic connections to brown adipose tissues. Furthermore, BDNF expression in the PVH was increased in response to cold exposure, and its ablation caused atrophy of sympathetic preganglionic neurons. Thus, BDNF neurons in anterior PVH control energy intake and locomotor activity, whereas those in medial and posterior PVH promote thermogenesis by releasing BDNF into spinal cord to boost sympathetic outflow.
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Affiliation(s)
- Juan Ji An
- Department of Neuroscience, The Scripps Research Institute Florida, Jupiter, FL 33458, USA
| | - Guey-Ying Liao
- Department of Neuroscience, The Scripps Research Institute Florida, Jupiter, FL 33458, USA
| | - Clint E Kinney
- Department of Neuroscience, The Scripps Research Institute Florida, Jupiter, FL 33458, USA; Department of Pharmacology and Physiology, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Niaz Sahibzada
- Department of Pharmacology and Physiology, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Baoji Xu
- Department of Neuroscience, The Scripps Research Institute Florida, Jupiter, FL 33458, USA.
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Abstract
In a recent publication in Neuron, Choe et al. (2015) demonstrate that brain-derived neurotrophic factor (BDNF) signaling mediates salt-induced blood pressure elevation by increasing the excitability of hypothalamic vasopressin-secreting neurons. These findings suggest complex roles for BDNF in adaptive cardiovascular responses to physiological challenges and in the pathogenesis of hypertension.
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Affiliation(s)
- Krisztina Marosi
- Laboratory of Neurosciences, National Institute on Aging Intramural Research Program, Baltimore, MD 21224, USA
| | - Mark P Mattson
- Laboratory of Neurosciences, National Institute on Aging Intramural Research Program, Baltimore, MD 21224, USA; Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
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Liao GY, Bouyer K, Kamitakahara A, Sahibzada N, Wang CH, Rutlin M, Simerly RB, Xu B. Brain-derived neurotrophic factor is required for axonal growth of selective groups of neurons in the arcuate nucleus. Mol Metab 2015; 4:471-82. [PMID: 26042201 PMCID: PMC4443292 DOI: 10.1016/j.molmet.2015.03.003] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Revised: 03/08/2015] [Accepted: 03/11/2015] [Indexed: 12/31/2022] Open
Abstract
Objective Brain-derived neurotrophic factor (BDNF) is a potent regulator of neuronal development, and the Bdnf gene produces two populations of transcripts with either a short or long 3′ untranslated region (3′ UTR). Deficiencies in BDNF signaling have been shown to cause severe obesity in humans; however, it remains unknown how BDNF signaling impacts the organization of neuronal circuits that control energy balance. Methods We examined the role of BDNF on survival, axonal projections, and synaptic inputs of neurons in the arcuate nucleus (ARH), a structure critical for the control of energy balance, using Bdnfklox/klox mice, which lack long 3′ UTR Bdnf mRNA and develop severe hyperphagic obesity. Results We found that a small fraction of neurons that express the receptor for BDNF, TrkB, also expressed proopiomelanocortin (POMC) or neuropeptide Y (NPY)/agouti-related protein (AgRP) in the ARH. Bdnfklox/klox mice had normal numbers of POMC, NPY, and TrkB neurons in the ARH; however, retrograde labeling revealed a drastic reduction in the number of ARH axons that project to the paraventricular hypothalamus (PVH) in these mice. In addition, fewer POMC and AgRP axons were found in the dorsomedial hypothalamic nucleus (DMH) and the lateral part of PVH, respectively, in Bdnfklox/klox mice. Using immunohistochemistry, we examined the impact of BDNF deficiency on inputs to ARH neurons. We found that excitatory inputs onto POMC and NPY neurons were increased and decreased, respectively, in Bdnfklox/klox mice, likely due to a compensatory response to marked hyperphagia displayed by the mutant mice. Conclusion This study shows that the majority of TrkB neurons in the ARH are distinct from known neuronal populations and that BDNF plays a critical role in directing projections from these neurons to the DMH and PVH. We propose that hyperphagic obesity due to BDNF deficiency is in part attributable to impaired axonal growth of TrkB-expressing ARH neurons.
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Key Words
- 3′ UTR, 3′ untranslated region
- ARH, arcuate nucleus of the hypothalamus
- AgRP neuron
- AgRP, agouti-related peptide
- BDNF, brain-derived neurotrophic factor
- DMH, dorsomedial nucleus of the hypothalamus
- DiI, 1,1′-dioctadecyl-3, 3,3′,3′-tetramethylindocarbocyanine perchlorate
- Excitatory synapse
- Inhibitory synapse
- LHA, lateral hypothalamic area
- NPY, neuropeptide Y
- PBS, phosphate buffer saline
- POMC neuron
- POMC, proopiomelanocortin
- PVH, paraventricular hypothalamic nucleus
- PVHlp, lateral part of the PVH
- PVHmp, medial parvicellular part of the PVH
- PVHmpd, medial parvicellular part of the PVH
- PVHpml, lateral magnocellular part of the PVH
- PVHpv, periventricular part of the PVH
- PVT, paraventricular nucleus of the thalamus
- Paraventricular hypothalamus
- TrkB
- Vgat, vesicular GABA transporter
- Vglut2, vesicular glutamate transporter 2
- aBNST, anterior bed nucleus of the stria terminalis
- pSTAT3, phosphorylated signal transducer and activator of transcription 3
- α-MSH, alpha-melanocyte stimulating hormone
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Affiliation(s)
- Guey-Ying Liao
- Department of Neuroscience, The Scripps Research Institute Florida, Jupiter, FL 33458, USA
| | - Karine Bouyer
- The Saban Research Institute, Children's Hospital Los Angeles, University of Southern California, Los Angeles, CA 90027, USA
| | - Anna Kamitakahara
- The Saban Research Institute, Children's Hospital Los Angeles, University of Southern California, Los Angeles, CA 90027, USA
| | - Niaz Sahibzada
- Department of Pharmacology and Physiology, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Chien-Hua Wang
- The Saban Research Institute, Children's Hospital Los Angeles, University of Southern California, Los Angeles, CA 90027, USA
| | - Michael Rutlin
- Solomon H. Snyder Department of Neuroscience, Howard Hughes Medical Institute, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Richard B Simerly
- The Saban Research Institute, Children's Hospital Los Angeles, University of Southern California, Los Angeles, CA 90027, USA
| | - Baoji Xu
- Department of Neuroscience, The Scripps Research Institute Florida, Jupiter, FL 33458, USA
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Scott MM, Xu Y, Elias CF, Williams KW. Central regulation of food intake, body weight, energy expenditure, and glucose homeostasis. Front Neurosci 2014; 8:384. [PMID: 25520610 PMCID: PMC4253741 DOI: 10.3389/fnins.2014.00384] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Accepted: 11/09/2014] [Indexed: 11/13/2022] Open
Affiliation(s)
- Michael M Scott
- Pharmacology, University of Virginia School of Medicine Charlottesville, VA, USA
| | - Yong Xu
- Department of Pediatrics, Children's Nutrition Research Center, Baylor College of Medicine Houston, TX, USA
| | - Carol F Elias
- Department of Molecular and Integrative Physiology, Obstetrics, and Gynecology, The University of Michigan Medical School Ann Arbor, MI, USA
| | - Kevin W Williams
- Division of Hypothalamic Research, Departments of Internal Medicine and Neuroscience, The University of Texas Southwestern Medical Center Dallas, TX, USA
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Ozek C, Kanoski SE, Zhang ZY, Grill HJ, Bence KK. Protein-tyrosine phosphatase 1B (PTP1B) is a novel regulator of central brain-derived neurotrophic factor and tropomyosin receptor kinase B (TrkB) signaling. J Biol Chem 2014; 289:31682-31692. [PMID: 25288805 DOI: 10.1074/jbc.m114.603621] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Neuronal protein-tyrosine phosphatase 1B (PTP1B) deficiency in mice results in enhanced leptin signaling and protection from diet-induced obesity; however, whether additional signaling pathways in the brain contribute to the metabolic effects of PTP1B deficiency remains unclear. Here, we show that the tropomyosin receptor kinase B (TrkB) receptor is a direct PTP1B substrate and implicate PTP1B in the regulation of the central brain-derived neurotrophic factor (BDNF) signaling. PTP1B interacts with activated TrkB receptor in mouse brain and human SH-SY5Y neuroblastoma cells. PTP1B overexpression reduces TrkB phosphorylation and activation of downstream signaling pathways, whereas PTP1B inhibition augments TrkB signaling. Notably, brains of Ptpn1(-/-) mice exhibit enhanced TrkB phosphorylation, and Ptpn1(-/-) mice are hypersensitive to central BDNF-induced increase in core temperature. Taken together, our findings demonstrate that PTP1B is a novel physiological regulator of TrkB and that enhanced BDNF/TrkB signaling may contribute to the beneficial metabolic effects of PTP1B deficiency.
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Affiliation(s)
- Ceren Ozek
- Department of Animal Biology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Scott E Kanoski
- Department of Biological Sciences, Human and Evolutionary Biology Section, University of Southern California, Los Angeles, California 90089, and
| | - Zhong-Yin Zhang
- Department of Biochemistry and Molecular Biology, School of Medicine, Indiana University, Indianapolis, Indiana 46202
| | - Harvey J Grill
- Department of Psychology, School of Arts and Sciences, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Kendra K Bence
- Department of Animal Biology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104,.
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