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Ciubuc-Batcu MT, Stapelberg NJC, Headrick JP, Renshaw GMC. A mitochondrial nexus in major depressive disorder: Integration with the psycho-immune-neuroendocrine network. Biochim Biophys Acta Mol Basis Dis 2024; 1870:166920. [PMID: 37913835 DOI: 10.1016/j.bbadis.2023.166920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 10/06/2023] [Accepted: 10/09/2023] [Indexed: 11/03/2023]
Abstract
Nervous system processes, including cognition and affective state, fundamentally rely on mitochondria. Impaired mitochondrial function is evident in major depressive disorder (MDD), reflecting cumulative detrimental influences of both extrinsic and intrinsic stressors, genetic predisposition, and mutation. Glucocorticoid 'stress' pathways converge on mitochondria; oxidative and nitrosative stresses in MDD are largely mitochondrial in origin; both initiate cascades promoting mitochondrial DNA (mtDNA) damage with disruptions to mitochondrial biogenesis and tryptophan catabolism. Mitochondrial dysfunction facilitates proinflammatory dysbiosis while directly triggering immuno-inflammatory activation via released mtDNA, mitochondrial lipids and mitochondria associated membranes (MAMs), further disrupting mitochondrial function and mitochondrial quality control, promoting the accumulation of abnormal mitochondria (confirmed in autopsy studies). Established and putative mechanisms highlight a mitochondrial nexus within the psycho-immune neuroendocrine (PINE) network implicated in MDD. Whether lowering neuronal resilience and thresholds for disease, or linking mechanistic nodes within the MDD pathogenic network, impaired mitochondrial function emerges as an important risk, a functional biomarker, providing a therapeutic target in MDD. Several treatment modalities have been demonstrated to reset mitochondrial function, which could benefit those with MDD.
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Affiliation(s)
- M T Ciubuc-Batcu
- Griffith University School of Medicine and Dentistry, Australia; Gold Coast Health, Queensland, Australia
| | - N J C Stapelberg
- Bond University Faculty of Health Sciences and Medicine, Australia; Gold Coast Health, Queensland, Australia
| | - J P Headrick
- Griffith University School of Pharmacy and Medical Science, Australia
| | - G M C Renshaw
- Hypoxia and Ischemia Research Unit, Griffith University, School of Health Sciences and Social Work, Australia.
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2
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Nota MH, Nicolas S, O’Leary OF, Nolan YM. Outrunning a bad diet: interactions between exercise and a Western-style diet for adolescent mental health, metabolism and microbes. Neurosci Biobehav Rev 2023; 149:105147. [PMID: 36990371 DOI: 10.1016/j.neubiorev.2023.105147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/16/2023] [Accepted: 03/24/2023] [Indexed: 03/29/2023]
Abstract
Adolescence is a period of biological, psychological and social changes, and the peak time for the emergence of mental health problems. During this life stage, brain plasticity including hippocampal neurogenesis is increased, which is crucial for cognitive functions and regulation of emotional responses. The hippocampus is especially susceptible to environmental and lifestyle influences, mediated by changes in physiological systems, resulting in enhanced brain plasticity but also an elevated risk for developing mental health problems. Indeed, adolescence is accompanied by increased activation of the maturing hypothalamic-pituitary-adrenal axis, sensitivity to metabolic changes due to increased nutritional needs and hormonal changes, and gut microbiota maturation. Importantly, dietary habits and levels of physical activity significantly impact these systems. In this review, the interactions between exercise and Western-style diets, which are high in fat and sugar, on adolescent stress susceptibility, metabolism and the gut microbiota are explored. We provide an overview of current knowledge on implications of these interactions for hippocampal function and adolescent mental health, and speculate on potential mechanisms which require further investigation.
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3
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Chompre G, Sambolin L, Cruz ML, Sanchez R, Rodriguez Y, Rodríguez-Santiago RE, Yamamura Y, Appleyard CB. A one month high fat diet disrupts the gut microbiome and integrity of the colon inducing adiposity and behavioral despair in male Sprague Dawley rats. Heliyon 2022; 8:e11194. [PMID: 36387539 PMCID: PMC9663868 DOI: 10.1016/j.heliyon.2022.e11194] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 06/17/2022] [Accepted: 10/17/2022] [Indexed: 11/05/2022] Open
Abstract
High-fat diet (HFD) is associated with gut microbiome dysfunction and mental disorders. However, the time-dependence as to when this occurs is unclear. We hypothesized that a short-term HFD causes colonic tissue integrity changes resulting in behavioral changes. Rats were fed HFD or low-fat diet (LFD) for a month and gut microbiome, colon, and behavior were evaluated. Behavioral despair was found in the HFD group. Although obesity was absent, the HFD group showed increased percent weight gain, epididymal fat tissue, and leptin expression. Moreover, the HFD group had increased colonic damage, decreased expression of the tight junction proteins, and higher lipopolysaccharides (LPS) in serum. Metagenomic analysis revealed that the HFD group had more Bacteroides and less S24-7 which correlated with the decreased claudin-5. Finally, HFD group showed an increase of microglia percent area, increased astrocytic projections, and decreased phospho-mTOR. In conclusion, HFD consumption in a short period is still sufficient to disrupt gut integrity resulting in LPS infiltration, alterations in the brain, and behavioral despair even in the absence of obesity.
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Affiliation(s)
- Gladys Chompre
- Biology and Biotechnology Department, Pontifical Catholic University of Puerto Rico, Ponce, Puerto Rico
- Basic Sciences Department, Division of Physiology, Ponce Health Sciences University/Ponce Research Institute, Ponce, Puerto Rico
| | - Lubriel Sambolin
- Basic Sciences Department, Division of Pharmacology, Ponce Health Sciences University/Ponce Research Institute, Ponce, Puerto Rico
| | - Myrella L. Cruz
- Basic Sciences Department, Division of Physiology, Ponce Health Sciences University/Ponce Research Institute, Ponce, Puerto Rico
| | - Rafael Sanchez
- AIDS Research Infrastructure Program, Ponce Health Sciences University/Ponce Research Institute, Ponce, Puerto Rico
| | - Yarelis Rodriguez
- Basic Sciences Department, Division of Physiology, Ponce Health Sciences University/Ponce Research Institute, Ponce, Puerto Rico
| | - Ronald E. Rodríguez-Santiago
- AIDS Research Infrastructure Program, Ponce Health Sciences University/Ponce Research Institute, Ponce, Puerto Rico
| | - Yasuhiro Yamamura
- AIDS Research Infrastructure Program, Ponce Health Sciences University/Ponce Research Institute, Ponce, Puerto Rico
| | - Caroline B. Appleyard
- Basic Sciences Department, Division of Physiology, Ponce Health Sciences University/Ponce Research Institute, Ponce, Puerto Rico
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4
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Targeting NRF2 in Type 2 diabetes mellitus and depression: Efficacy of natural and synthetic compounds. Eur J Pharmacol 2022; 925:174993. [PMID: 35513015 DOI: 10.1016/j.ejphar.2022.174993] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 03/31/2022] [Accepted: 04/28/2022] [Indexed: 12/18/2022]
Abstract
Evidence supports a strong bidirectional association between depression and Type 2 diabetes mellitus (T2DM). The harmful impact of oxidative stress and chronic inflammation on the development of both disorders is widely accepted. Nuclear factor erythroid 2-related factor 2 (NRF2) is a pertinent target in disease management owing to its reputation as the master regulator of antioxidant responses. NRF2 influences the expression of various cytoprotective phase 2 antioxidant genes, which is hampered in both depression and T2DM. Through interaction and crosstalk with several signaling pathways, NRF2 endeavors to contain the widespread oxidative damage and persistent inflammation involved in the pathophysiology of depression and T2DM. NRF2 promotes the neuroprotective and insulin-sensitizing properties of its upstream and downstream targets, thereby interrupting and preventing disease advancement. Standard antidepressant and antidiabetic drugs may be powerful against these disorders, but unfortunately, they come bearing distressing side effects. Therefore, exploiting the therapeutic potential of NRF2 activators presents an exciting opportunity to manage such bidirectional and comorbid conditions.
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Abstract
Neuropsychiatric disorders are major causes of the global burden of diseases, frequently co-occurring with multiple co-morbidities, especially obesity, type 2 diabetes mellitus, non-alcoholic fatty liver disease and its various risk factors in the metabolic syndrome. While the determining factors of neuropsychiatric disorders are complex, recent studies have shown that there is a strong link between diet, metabolic state and neuropsychiatric disorders, including anxiety and depression. There is no doubt that rodent models are of great value for preclinical research. Therefore, this article focuses on a rodent model of chronic consumption of high-fat diet (HFD), and/or the addition of a certain amount of cholesterol or sugar, meanwhile, summarising the pattern of diet that induces anxiety/depressive-like behaviour and the underlying mechanism. We highlight how dietary and metabolic risk influence neuropsychiatric behaviour in animals. Changes in dietary patterns, especially HFD, can induce anxiety- or depression-like behaviours, which may vary by diet exposure period, sex, age, species and genetic background of the animals used. Furthermore, dietary patterns significantly aggravate anxiety/depression-like behaviour in animal models of neuropsychiatric disorders. The mechanisms by which diet induces anxiety/depressive-like behaviour may involve neuroinflammation, neurotransmitters/neuromodulators, neurotrophins and the gut-brain axis. Future research should be focused on elucidating the mechanism and identifying the contribution of diet and diet-induced metabolic risk to neuropsychiatric disorders, which can form the basis for future clinical dietary intervention strategies for neuropsychiatric disorders.
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Sousa RALD, Improta-Caria AC, Souza BSDF. Exercise-Linked Irisin: Consequences on Mental and Cardiovascular Health in Type 2 Diabetes. Int J Mol Sci 2021; 22:2199. [PMID: 33672171 PMCID: PMC7926886 DOI: 10.3390/ijms22042199] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 11/30/2020] [Accepted: 12/02/2020] [Indexed: 12/11/2022] Open
Abstract
Type 2 diabetes mellitus (T2DM) is a metabolic disorder associated with insulin resistance and hyperglycemia. Chronic exposure to a T2DM microenvironment with hyperglycemia, hyperinsulinemia, oxidative stress and increased levels of proinflammatory mediators, has negative consequences to the cardiovascular system and mental health. Therefore, atherosclerotic cardiovascular diseases (CVD) and mental health issues have been strongly associated with T2DM. Lifestyle modifications, including physical exercise training, are necessary to prevent T2DM development and its associated complications. It is widely known that the regular practice of exercise provides several physiological benefits to subjects with T2DM, such as managing glycemic and blood pressure levels. Different types of exercise, from aerobic to resistance training, are effective to improve mental health and cognitive function in T2DM. Irisin is a myokine produced in response to exercise, which has been pointed as a relevant mechanism of action to explain the benefits of exercise on cardiovascular and mental health in T2DM patients. Here, we review emerging clinical and experimental evidence about exercise-linked irisin consequences to cardiovascular and mental health in T2DM.
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Affiliation(s)
- Ricardo Augusto Leoni De Sousa
- Multicenter Post Graduation Program in Physiological Sciences, Brazilian Society of Physiology, Federal University of the Valleys of Jequitinhonha and Mucuri, Diamantina, Minas Gerais CEP 39.000-000, Brazil;
- Neuroscience and Exercise Study Group (Grupo de Estudos em Neurociências e Exercício–GENE), Federal University of the Valleys of Jequitinhonha and Mucuri, Diamantina, Minas Gerais CEP 39.000-000, Brazil
| | - Alex Cleber Improta-Caria
- Post-Graduate Program in Medicine and Health, Faculty of Medicine, Federal University of Bahia, Bahia CEP 40.110-100, Brazil;
- Department of Physical Education in Cardiology, Brazilian Society of Cardiology, Bahia CEP 41.170-130, Brazil
- Center for Biotechnology and Cell Therapy, São Rafael Hospital, Bahia CEP 41.253-190, Brazil
| | - Bruno Solano de Freitas Souza
- Center for Biotechnology and Cell Therapy, São Rafael Hospital, Bahia CEP 41.253-190, Brazil
- D’Or Institute for Research and Education (IDOR), Rio de Janeiro CEP 22.281-100, Brazil
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Bahia CEP 40.296-710, Brazil
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7
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van Dijk MT, Cha J, Semanek D, Aw N, Gameroff MJ, Abraham E, Wickramaratne PJ, Weissman MM, Posner J, Talati A. Altered Dentate Gyrus Microstructure in Individuals at High Familial Risk for Depression Predicts Future Symptoms. BIOLOGICAL PSYCHIATRY. COGNITIVE NEUROSCIENCE AND NEUROIMAGING 2021; 6:50-58. [PMID: 32855106 PMCID: PMC7750261 DOI: 10.1016/j.bpsc.2020.06.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 05/27/2020] [Accepted: 06/06/2020] [Indexed: 12/20/2022]
Abstract
BACKGROUND Offspring of individuals with major depressive disorder (MDD) are at increased risk for developing MDD themselves. Altered hippocampal, and specifically dentate gyrus (DG), structure and function may be involved in depression development. However, hippocampal abnormalities could also be a consequence of the disease. For the first time, we tested whether abnormal DG micro- and macrostructure were present in offspring of individuals with MDD and whether these abnormalities predicted future symptomatology. METHODS We measured the mean diffusivity of gray matter, a measure of microstructure, via diffusion tensor imaging and volume of the DG via structural magnetic resonance imaging in 102 generation 2 and generation 3 offspring at high and low risk for depression, defined by the presence or absence, respectively, of moderate to severe MDD in generation 1. Prior, current, and future depressive symptoms were tested for association with hippocampal structure. RESULTS DG mean diffusivity was higher in individuals at high risk for depression, regardless of a lifetime history of MDD. While DG mean diffusivity was not associated with past or current depressive symptoms, higher mean diffusivity predicted higher symptom scores 8 years later. DG microstructure partially mediated the association between risk and future symptoms. DG volume was smaller in high-risk generation 2 but not in high-risk generation 3. CONCLUSIONS Together, these findings suggest that the DG has a role in the development of depression. Furthermore, DG microstructure, more than macrostructure, is a sensitive risk marker for depression and partially mediates future depressive symptoms.
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Affiliation(s)
- Milenna T van Dijk
- Department of Psychiatry, College of Physicians and Surgeons, New York, New York; Division of Translational Epidemiology, New York State Psychiatric Institute, New York, New York
| | - Jiook Cha
- Department of Psychiatry, College of Physicians and Surgeons, New York, New York; Department of Psychology, Seoul National University, South Korea
| | - David Semanek
- Department of Psychiatry, College of Physicians and Surgeons, New York, New York; Division of Child Psychiatry, New York State Psychiatric Institute, New York, New York
| | - Natalie Aw
- Department of Psychiatry, College of Physicians and Surgeons, New York, New York; Division of Child Psychiatry, New York State Psychiatric Institute, New York, New York
| | - Marc J Gameroff
- Department of Psychiatry, College of Physicians and Surgeons, New York, New York; Division of Translational Epidemiology, New York State Psychiatric Institute, New York, New York
| | - Eyal Abraham
- Department of Psychiatry, College of Physicians and Surgeons, New York, New York; Division of Translational Epidemiology, New York State Psychiatric Institute, New York, New York
| | - Priya J Wickramaratne
- Department of Psychiatry, College of Physicians and Surgeons, New York, New York; Division of Translational Epidemiology, New York State Psychiatric Institute, New York, New York
| | - Myrna M Weissman
- Department of Psychiatry, College of Physicians and Surgeons, New York, New York; Mailman School of Public Health, Columbia University, New York, New York; Division of Translational Epidemiology, New York State Psychiatric Institute, New York, New York
| | - Jonathan Posner
- Department of Psychiatry, College of Physicians and Surgeons, New York, New York; Division of Child Psychiatry, New York State Psychiatric Institute, New York, New York
| | - Ardesheer Talati
- Department of Psychiatry, College of Physicians and Surgeons, New York, New York; Division of Translational Epidemiology, New York State Psychiatric Institute, New York, New York.
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8
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From Obesity to Hippocampal Neurodegeneration: Pathogenesis and Non-Pharmacological Interventions. Int J Mol Sci 2020; 22:ijms22010201. [PMID: 33379163 PMCID: PMC7796248 DOI: 10.3390/ijms22010201] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 12/21/2020] [Accepted: 12/23/2020] [Indexed: 12/16/2022] Open
Abstract
High-caloric diet and physical inactivity predispose individuals to obesity and diabetes, which are risk factors of hippocampal neurodegeneration and cognitive deficits. Along with the adipose-hippocampus crosstalk, chronically inflamed adipose tissue secretes inflammatory cytokine could trigger neuroinflammatory responses in the hippocampus, and in turn, impairs hippocampal neuroplasticity under obese and diabetic conditions. Hence, caloric restriction and physical exercise are critical non-pharmacological interventions to halt the pathogenesis from obesity to hippocampal neurodegeneration. In response to physical exercise, peripheral organs, including the adipose tissue, skeletal muscles, and liver, can secret numerous exerkines, which bring beneficial effects to metabolic and brain health. In this review, we summarized how chronic inflammation in adipose tissue could trigger neuroinflammation and hippocampal impairment, which potentially contribute to cognitive deficits in obese and diabetic conditions. We also discussed the potential mechanisms underlying the neurotrophic and neuroprotective effects of caloric restriction and physical exercise by counteracting neuroinflammation, plasticity deficits, and cognitive impairments. This review provides timely insights into how chronic metabolic disorders, like obesity, could impair brain health and cognitive functions in later life.
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9
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Rahimi S, Peeri M, Azarbayjani MA, Anoosheh L, Ghasemzadeh E, Khalifeh N, Noroozi-Mahyari S, Deravi S, Saffari-Anaraki S, Hemat Zangeneh F, Salari AA. Long-term exercise from adolescence to adulthood reduces anxiety- and depression-like behaviors following maternal immune activation in offspring. Physiol Behav 2020; 226:113130. [PMID: 32791182 DOI: 10.1016/j.physbeh.2020.113130] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 08/04/2020] [Accepted: 08/07/2020] [Indexed: 01/08/2023]
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10
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Dassonvalle J, Díaz-Castro F, Donoso-Barraza C, Sepúlveda C, Pino-de la Fuente F, Pino P, Espinosa A, Chiong M, Llanos M, Troncoso R. Moderate Aerobic Exercise Training Prevents the Augmented Hepatic Glucocorticoid Response Induced by High-Fat Diet in Mice. Int J Mol Sci 2020; 21:ijms21207582. [PMID: 33066464 PMCID: PMC7590042 DOI: 10.3390/ijms21207582] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 09/22/2020] [Accepted: 10/07/2020] [Indexed: 12/16/2022] Open
Abstract
Glucocorticoids (GCs) are critical regulators of energy balance. Their deregulation is associated with the development of obesity and metabolic syndrome. However, it is not understood if obesity alters the tissue glucocorticoid receptor (GR) response, and moreover whether a moderate aerobic exercise prevents the alteration in GR response induced by obesity. Methods: To evaluate the GR response in obese mice, we fed C57BL6J mice with a high-fat diet (HFD) for 12 weeks. Before mice were sacrificed, we injected them with dexamethasone. To assess the exercise role in GR response, we fed mice an HFD and subjected them to moderate aerobic exercise three times a week. Results: We found that mice fed a high-fat diet for 12 weeks developed hepatic GC hypersensitivity without changes in the gastrocnemius or epididymal fat GR response. Therefore, moderate aerobic exercise improved glucose tolerance, increased the corticosterone plasma levels, and prevented hepatic GR hypersensitivity with an increase in epididymal fat GR response. Conclusion: Collectively, our results suggest that mice with HFD-induced obesity develop hepatic GR sensitivity, which could enhance the metabolic effects of HFD in the liver. Moreover, exercise was found to be a feasible non-pharmacological strategy to prevent the deregulation of GR response in obesity.
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Affiliation(s)
- Jonatan Dassonvalle
- Laboratorio de Investigación en Nutrición y Actividad Física (LABINAF), Instituto de Nutrición y Tecnologia de los Alimentos (INTA), Universidad de Chile, Santiago 7830490, Chile; (J.D.); (F.D.-C.); (C.D.-B.); (C.S.); (P.P.)
| | - Francisco Díaz-Castro
- Laboratorio de Investigación en Nutrición y Actividad Física (LABINAF), Instituto de Nutrición y Tecnologia de los Alimentos (INTA), Universidad de Chile, Santiago 7830490, Chile; (J.D.); (F.D.-C.); (C.D.-B.); (C.S.); (P.P.)
| | - Camila Donoso-Barraza
- Laboratorio de Investigación en Nutrición y Actividad Física (LABINAF), Instituto de Nutrición y Tecnologia de los Alimentos (INTA), Universidad de Chile, Santiago 7830490, Chile; (J.D.); (F.D.-C.); (C.D.-B.); (C.S.); (P.P.)
| | - Carlos Sepúlveda
- Laboratorio de Investigación en Nutrición y Actividad Física (LABINAF), Instituto de Nutrición y Tecnologia de los Alimentos (INTA), Universidad de Chile, Santiago 7830490, Chile; (J.D.); (F.D.-C.); (C.D.-B.); (C.S.); (P.P.)
| | - Francisco Pino-de la Fuente
- Departamento de Tecnología Medica, Facultad de Medicina, Universidad de Chile, Santiago 8380453, Chile; (F.P.-d.l.F.); (A.E.)
| | - Pamela Pino
- Laboratorio de Investigación en Nutrición y Actividad Física (LABINAF), Instituto de Nutrición y Tecnologia de los Alimentos (INTA), Universidad de Chile, Santiago 7830490, Chile; (J.D.); (F.D.-C.); (C.D.-B.); (C.S.); (P.P.)
| | - Alejandra Espinosa
- Departamento de Tecnología Medica, Facultad de Medicina, Universidad de Chile, Santiago 8380453, Chile; (F.P.-d.l.F.); (A.E.)
| | - Mario Chiong
- Advanced Center for Chronic Diseases (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Universidad de Chile, Santiago 8380492, Chile;
| | - Miguel Llanos
- Laboratorio de Nutrición y Regulación Metabólica, INTA, Universidad de Chile, Santiago 7830490, Chile;
| | - Rodrigo Troncoso
- Laboratorio de Investigación en Nutrición y Actividad Física (LABINAF), Instituto de Nutrición y Tecnologia de los Alimentos (INTA), Universidad de Chile, Santiago 7830490, Chile; (J.D.); (F.D.-C.); (C.D.-B.); (C.S.); (P.P.)
- Advanced Center for Chronic Diseases (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Universidad de Chile, Santiago 8380492, Chile;
- Correspondence: ; Tel.: +56-929-781-587
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11
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Treading water: mixed effects of high fat diet on mouse behavior in the forced swim test. Physiol Behav 2020; 223:112965. [DOI: 10.1016/j.physbeh.2020.112965] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 05/02/2020] [Accepted: 05/10/2020] [Indexed: 12/27/2022]
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12
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Wang P, Liang Y, Chen K, Yau SY, Sun X, Cheng KKY, Xu A, So KF, Li A. Potential Involvement of Adiponectin Signaling in Regulating Physical Exercise-Elicited Hippocampal Neurogenesis and Dendritic Morphology in Stressed Mice. Front Cell Neurosci 2020; 14:189. [PMID: 32774242 PMCID: PMC7381385 DOI: 10.3389/fncel.2020.00189] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Accepted: 05/29/2020] [Indexed: 12/12/2022] Open
Abstract
Adiponectin, a cytokine secreted by mature adipocytes, proves to be neuroprotective. We have previously reported that running triggers adiponectin up-regulation which subsequently promotes generation of hippocampal neurons and thereby alleviates depression-like behaviors in non-stressed mice. However, under the stressing condition, whether adiponectin could still exert antidepressant-like effects following exercise remained unexplored. In this study, by means of repeated corticosterone injections to mimic stress insult and voluntary wheel running as physical exercise intervention, we examined whether exercise-elicited antidepressive effects might involve adiponectin's regulation on hippocampal neurogenesis and dendritic plasticity in stressed mice. Here we show that repeated injections of corticosterone inhibited hippocampal neurogenesis and impaired dendritic morphology of neurons in the dentate gyrus of both wild-type and adiponectin-knockout mice comparably, which subsequently evoked depression-like behaviors. Voluntary wheel running attenuated corticosterone-suppressed neurogenesis and enhanced dendritic plasticity in the hippocampus, ultimately reducing depression-like behaviors in wild-type, but not adiponectin-knockout mice. We further demonstrate that such proneurogenic effects were potentially achieved through activation of the AMP-dependent kinase (AMPK) pathway. Our study provides the first evidence that adiponectin signaling is essential for physical exercise-triggered effects on stress-elicited depression by retaining the normal proliferation of neural progenitors and dendritic morphology of neurons in the hippocampal dentate gyrus, which may depend on activation of the AMPK pathway.
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Affiliation(s)
- Pingjie Wang
- Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Joint International Research Laboratory of CNS Regeneration Ministry of Education, Jinan University, Guangzhou, China
| | - Yiyao Liang
- Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Joint International Research Laboratory of CNS Regeneration Ministry of Education, Jinan University, Guangzhou, China
| | - Kai Chen
- Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Joint International Research Laboratory of CNS Regeneration Ministry of Education, Jinan University, Guangzhou, China
| | - Suk-Yu Yau
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Kowloon, Hong Kong
| | - Xin Sun
- Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Joint International Research Laboratory of CNS Regeneration Ministry of Education, Jinan University, Guangzhou, China
| | - Kenneth King-Yip Cheng
- Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Kowloon, Hong Kong
| | - Aimin Xu
- Department of Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong.,Department of Pharmacy and Pharmacology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong.,State Key Laboratory of Pharmaceutical Biotechnology, The University of Hong Kong, Pokfulam, Hong Kong
| | - Kwok-Fai So
- Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Joint International Research Laboratory of CNS Regeneration Ministry of Education, Jinan University, Guangzhou, China.,State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Pokfulam, Hong Kong.,Department of Ophthalmology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong.,Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, China.,Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Ang Li
- Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Joint International Research Laboratory of CNS Regeneration Ministry of Education, Jinan University, Guangzhou, China.,Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, China
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13
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Du HX, Liu Y, Zhang LG, Zhan CS, Chen J, Zhang M, Chen XG, Zhang L, Liang CZ. Abnormal gut microbiota composition is associated with experimental autoimmune prostatitis-induced depressive-like behaviors in mice. Prostate 2020; 80:663-673. [PMID: 32255522 DOI: 10.1002/pros.23978] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 03/17/2020] [Accepted: 03/25/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND Depressive symptoms are found in approximately 78% of chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS) patients, but the pathological mechanisms remain unknown. Increasing evidence suggests that abnormal gut microbiota may play an important role in depression. Thus, we aimed to investigate whether gut microbiota contributes to CP/CPPS-associated depression by using a mouse model of experimental autoimmune prostatitis (EAP). METHODS Male nonobese diabetic mice were immunized twice by subcutaneous injection of prostate antigen and adjuvant. Behavioral tests consisted of an open field test, sucrose preference test, forced swimming tests, and tail suspension test was used to confirm the depression-like symptoms that were induced by EAP. Then, fecal samples were collected, and 16S ribosomal RNA gene sequencing was performed to detect differences in gut microbiota composition between control and EAP group. Additionally, fecal bacteria from the control and EAP mice were transplanted into antibiotics-induced pseudo-germ-free mice to investigate the effects on host behaviors and the composition of gut bacteria. RESULTS EAP was successfully established and exhibited depressive-like behaviors in mice. The 16S rRNA analysis of fecal samples indicated the abnormal composition of gut microbiota in the EAP mice compared to the control mice. In the fecal microbiota transplant study, antibiotics-treated pseudo-germ-free mice presented depressive states as compared to naïve mice. Fecal bacteria transplant from EAP mice, but not from control mice, into the pseudo-germ-free mice, significantly exaggerated host depression-like behaviors. Moreover, fecal bacteria transplants from control and EAP mice induced distinct alterations in α-diversity and β-diversity indices. In all, 24 bacteria at six phylogenetic levels were remarkably changed by the fecal bacteria transplantation. CONCLUSIONS Abnormal gut microbiota composition after EAP induction may contribute to the development of depression in mice. A therapeutic strategy that targets gut microbiota may provide an alternative treatment for alleviating this condition.
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Affiliation(s)
- He-Xi Du
- Department of Urology, the First Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei, Anhui, China
- Institute of Urology, Anhui Medical University, Hefei, Anhui, China
- Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, Anhui, China
| | - Yi Liu
- Department of Urology, the First Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei, Anhui, China
- Institute of Urology, Anhui Medical University, Hefei, Anhui, China
- Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, Anhui, China
| | - Li-Gang Zhang
- Department of Urology, the First Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei, Anhui, China
- Institute of Urology, Anhui Medical University, Hefei, Anhui, China
- Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, Anhui, China
| | - Chang-Sheng Zhan
- Department of Urology, the First Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei, Anhui, China
- Institute of Urology, Anhui Medical University, Hefei, Anhui, China
- Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, Anhui, China
| | - Jing Chen
- Department of Urology, the First Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei, Anhui, China
- Institute of Urology, Anhui Medical University, Hefei, Anhui, China
- Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, Anhui, China
| | - Meng Zhang
- Department of Urology, the First Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei, Anhui, China
- Institute of Urology, Anhui Medical University, Hefei, Anhui, China
- Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, Anhui, China
| | - Xian-Guo Chen
- Department of Urology, the First Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei, Anhui, China
- Institute of Urology, Anhui Medical University, Hefei, Anhui, China
- Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, Anhui, China
| | - Li Zhang
- Department of Urology, the First Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei, Anhui, China
- Institute of Urology, Anhui Medical University, Hefei, Anhui, China
- Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, Anhui, China
| | - Chao-Zhao Liang
- Department of Urology, the First Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei, Anhui, China
- Institute of Urology, Anhui Medical University, Hefei, Anhui, China
- Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, Anhui, China
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Metformin Promotes Anxiolytic and Antidepressant-Like Responses in Insulin-Resistant Mice by Decreasing Circulating Branched-Chain Amino Acids. J Neurosci 2019; 39:5935-5948. [PMID: 31160539 DOI: 10.1523/jneurosci.2904-18.2019] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 05/07/2019] [Accepted: 05/15/2019] [Indexed: 12/27/2022] Open
Abstract
Epidemiological studies indicate that insulin resistance (IR), a hallmark of type 2 diabetes, is associated with an increased risk of major depression. Here, we demonstrated that male mice fed a high-fat diet (HFD) exhibited peripheral metabolic impairments reminiscent of IR accompanied by elevated circulating levels of branched-chain amino acids (BCAAs), whereas both parameters were normalized by chronic treatment with metformin (Met). Given the role of BCAAs in the regulation of tryptophan influx into the brain, we then explored the activity of the serotonin (5-HT) system. Our results indicated that HFD-fed mice displayed impairment in the electrical activity of dorsal raphe 5-HT neurons, attenuated hippocampal extracellular 5-HT concentrations and anxiety, one of the most visible and early symptoms of depression. On the contrary, Met stimulated 5-HT neurons excitability and 5-HT neurotransmission while hindering HFD-induced anxiety. Met also promoted antidepressant-like activities as observed with fluoxetine. In light of these data, we designed a modified HFD in which BCAA dietary supply was reduced by half. Deficiency in BCAAs failed to reverse HFD-induced metabolic impairments while producing antidepressant-like activity and enhancing the behavioral response to fluoxetine. Our results suggest that Met may act by decreasing circulating BCAAs levels to favor serotonergic neurotransmission in the hippocampus and promote antidepressant-like effects in mice fed an HFD. These findings also lead us to envision that a diet poor in BCAAs, provided either alone or as add-on therapy to conventional antidepressant drugs, could help to relieve depressive symptoms in patients with metabolic comorbidities.SIGNIFICANCE STATEMENT Insulin resistance in humans is associated with increased risk of anxiodepressive disorders. Such a relationship has been also found in rodents fed a high-fat diet (HFD). To determine whether insulin-sensitizing strategies induce anxiolytic- and/or antidepressant-like activities and to investigate the underlying mechanisms, we tested the effects of metformin, an oral antidiabetic drug, in mice fed an HFD. Metformin reduced levels of circulating branched-chain amino acids, which regulate tryptophan uptake within the brain. Moreover, metformin increased hippocampal serotonergic neurotransmission while promoting anxiolytic- and antidepressant-like effects. Moreover, a diet poor in these amino acids produced similar beneficial behavioral property. Collectively, these results suggest that metformin could be used as add-on therapy to a conventional antidepressant for the comorbidity between metabolic and mental disorders.
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Odaira T, Nakagawasai O, Takahashi K, Nemoto W, Sakuma W, Lin JR, Tan-No K. Mechanisms underpinning AMP-activated protein kinase-related effects on behavior and hippocampal neurogenesis in an animal model of depression. Neuropharmacology 2019; 150:121-133. [PMID: 30914305 DOI: 10.1016/j.neuropharm.2019.03.026] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 03/01/2019] [Accepted: 03/19/2019] [Indexed: 01/04/2023]
Abstract
Adenosine monophosphate-activated protein kinase (AMPK) is critical for whole-body energy metabolism regulation. Recent studies have suggested that physical exercise ameliorates depressive-like behaviors via AMPK activation; however, the underlying mechanism is unclear. Here, we examined the effects and underlying mechanisms of AMPK activation on depressive-like behavior in olfactory bulbectomized (OBX) mice. We treated OBX mice with the AMPK activator, 5-aminoimidazole-4-carboxamide-1-β-d-ribonucleotide (AICAR) on the 7th or 14th day after bilateral bulbectomy and evaluated depressive-like behavior using the tail-suspension test (TST) and forced swimming test (FST) on the 21st day. The expression of phosphorylated AMPK, protein kinase C ζ (PKCζ), nuclear factor-kappa B (NF-κB), brain-derived neurotrophic factor (BDNF), and cAMP response element-binding protein (CREB) in the hippocampus was assessed by western blotting. Hippocampal neurogenesis and localization of AMPK and phosphorylated NF-κB were examined by immunohistochemistry. Chronic AICAR treatment suppressed the prolonged immobility of OBX mice in the TST and FST, and increased the levels of phosphorylated AMPK, PKCζ, NF-κB, CREB, and BDNF. Hippocampal neurogenesis in OBX mice was promoted by chronic AICAR treatment. Co-administration of AICAR with the PKCζ inhibitor or the neurotrophic tyrosine kinase receptor type 2 (TrkB) antagonist, ANA-12, inhibited these effects. Phosphorylated AMPK was detected in mature and immature hippocampal neurons and microglia, while phosphorylated NF-κB was detected only in neurons in AICAR-treated OBX mice. These data indicate that AMPK activation produces anti-depressant effects, which are mediated by elevated hippocampal neurogenesis potentially via PKCζ/NF-κB/BDNF/TrkB/CREB signaling in neurons.
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Affiliation(s)
- Takayo Odaira
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai 981-8558, Japan
| | - Osamu Nakagawasai
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai 981-8558, Japan.
| | - Kohei Takahashi
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai 981-8558, Japan
| | - Wataru Nemoto
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai 981-8558, Japan
| | - Wakana Sakuma
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai 981-8558, Japan
| | - Jia-Rong Lin
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai 981-8558, Japan
| | - Koichi Tan-No
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai 981-8558, Japan
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16
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Du HX, Chen XG, Zhang L, Liu Y, Zhan CS, Chen J, Zhang Y, Yu ZQ, Zhang J, Yang HY, Zhong K, Liang CZ. Microglial activation and neurobiological alterations in experimental autoimmune prostatitis-induced depressive-like behavior in mice. Neuropsychiatr Dis Treat 2019; 15:2231-2245. [PMID: 31496706 PMCID: PMC6689565 DOI: 10.2147/ndt.s211288] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Accepted: 07/12/2019] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Patients with chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS) frequently show depressive symptoms clinically and increasing evidence indicates a correlation between CP/CPPS and depression. However, the underlying mechanisms of CP/CPPS-related depression remain poorly understood. Here, we sought to determine the role of hippocampal microglial activation and neurobiological changes in a mouse model of experimental autoimmune prostatitis (EAP)-induced depression and the treatment efficacy of Chinese herb extract baicalein. METHODS EAP was induced through intradermal injection of prostate antigen and adjuvant twice. Then, mice were assessed for affective behaviors in the open field test, elevated plus maze, forced swim test, and tail suspension test. The morphology and function of microglia and astrocytes were detected by immunofluorescence, Western blotting, and transmission electron microscopy. Proinflammatory mediators along with serotonin transporter (SLC6A4/SERT) and indoleamine 2,3-dioxygenase (IDO) were quantified with reverse transcription-polymerase chain reaction (RT‑PCR), and serum serotonin concentrations were measured by enzyme-linked immunosorbent assay (ELISA). Proton magnetic resonance spectroscopy (1H-MRS) was performed to measure hippocampal glutamate levels. In addition, baicalein was used in a subset of EAP mice to test its anti-depressant action. RESULTS EAP was successfully established and induced depressive- and anxiety-like behavior in mice. Increasing levels of co-expressed ionized calcium-binding adapter molecule 1 (Iba1) and glial fibrillary acidic protein (GFAP) and ultrastructural observations suggested microglial activation and reactive astrocytosis in the hippocampus. These activated microglia resulted in increased expressions of multiple proinflammatory cytokines. Simultaneously, EAP mice showed higher gene expressions of SLC6A4 and IDO and lower concentrations of serotonin. 1H-MRS indicated a decrease in the glutamate + glutamine (Glx)/total creatine (tCr) ratio in EAP mice. Furthermore, baicalein treatment alleviated the depressive-like behavior and neuroinflammation by suppressing the nuclear factor-kappa B (NF-κB) pathway. CONCLUSION Our data indicate that EAP-induced depressive-like behavior is linked to microglia activation and subsequent neurotransmitter metabolism. Moreover, baicalein attenuates behavioral changes by inhibiting neuroinflammation via downregulation of the NF-κB pathway.
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Affiliation(s)
- He-Xi Du
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei 230022, People's Republic of China.,Institute of Urology, Anhui Medical University, Hefei 230022, People's Republic of China.,Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei 230022, People's Republic of China
| | - Xian-Guo Chen
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei 230022, People's Republic of China.,Institute of Urology, Anhui Medical University, Hefei 230022, People's Republic of China.,Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei 230022, People's Republic of China
| | - Li Zhang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei 230022, People's Republic of China.,Institute of Urology, Anhui Medical University, Hefei 230022, People's Republic of China.,Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei 230022, People's Republic of China
| | - Yi Liu
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei 230022, People's Republic of China.,Institute of Urology, Anhui Medical University, Hefei 230022, People's Republic of China.,Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei 230022, People's Republic of China
| | - Chang-Sheng Zhan
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei 230022, People's Republic of China.,Institute of Urology, Anhui Medical University, Hefei 230022, People's Republic of China.,Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei 230022, People's Republic of China
| | - Jing Chen
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei 230022, People's Republic of China.,Institute of Urology, Anhui Medical University, Hefei 230022, People's Republic of China.,Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei 230022, People's Republic of China
| | - Yong Zhang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei 230022, People's Republic of China.,Institute of Urology, Anhui Medical University, Hefei 230022, People's Republic of China.,Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei 230022, People's Republic of China
| | - Zi-Qiang Yu
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei 230022, People's Republic of China.,Institute of Urology, Anhui Medical University, Hefei 230022, People's Republic of China.,Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei 230022, People's Republic of China
| | - Jin Zhang
- High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, People's Republic of China.,Key Laboratory of Anhui Province for High Magnetic Resonance Imaging, Hefei 230031, People's Republic of China
| | - Hong-Yi Yang
- High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, People's Republic of China.,Key Laboratory of Anhui Province for High Magnetic Resonance Imaging, Hefei 230031, People's Republic of China
| | - Kai Zhong
- High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, People's Republic of China.,Key Laboratory of Anhui Province for High Magnetic Resonance Imaging, Hefei 230031, People's Republic of China
| | - Chao-Zhao Liang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei 230022, People's Republic of China.,Institute of Urology, Anhui Medical University, Hefei 230022, People's Republic of China.,Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei 230022, People's Republic of China
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dos Santos FV, Targa AD, Hammerschmidt I, Zanata SM, Maia FG, Visentainer JV, Santos Junior OO, da Costa BA, Lagranha CJ, Ferraz AC. Fish oil supplementation reverses behavioral and neurochemical alterations induced by swimming exercise in rats. Physiol Behav 2018; 194:95-102. [DOI: 10.1016/j.physbeh.2018.05.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 04/12/2018] [Accepted: 05/04/2018] [Indexed: 02/06/2023]
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18
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Antidepressant Effect of Fraxinus rhynchophylla Hance Extract in a Mouse Model of Chronic Stress-Induced Depression. BIOMED RESEARCH INTERNATIONAL 2018; 2018:8249563. [PMID: 30065945 PMCID: PMC6051329 DOI: 10.1155/2018/8249563] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 05/11/2018] [Accepted: 05/21/2018] [Indexed: 12/29/2022]
Abstract
Prolonged exposure to stress can affect mood and cognition and lead to mood disorders. Research on stress-associated mood disorders is important in modern society as people are increasingly exposed to unavoidable stressors. We used a mouse model with 2 weeks of exposure to electric foot shock and restraint, to determine the effect of Fraxinus rhynchophylla Hance (FX) extract on chronic stress-induced depression. We measured the effect of FX extract using various physiological, behavioral, and biochemical measures. FX extract ameliorated chronic stress-induced body and relative liver weight loss and improved depressive-like behaviors in the open field and forced swim tests. In addition, plasma cortisol and serotonin levels in stress-induced mice following FX treatment were similar to normal mice, and the elevation of proinflammatory cytokines was prevented. Moreover, FX treatment increased the expression of phosphorylated cyclic adenosine-3′,5′-monophosphate response element-binding protein (pCREB)/brain-derived neurotrophic factor (BDNF). Further experiments confirmed the efficacy of FX extract by showing similar results using esculin and esculetin, compounds extracted from FX. Taken together, these results indicate that FX extract has an antidepressant effect on chronic stress-induced depression by associating signaling with neuroinflammation and neurogenesis.
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19
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Zong J, Liao X, Ren B, Wang Z. The antidepressant effects of rosiglitazone on rats with depression induced by neuropathic pain. Life Sci 2018; 203:315-322. [DOI: 10.1016/j.lfs.2018.04.057] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 04/23/2018] [Accepted: 04/30/2018] [Indexed: 12/22/2022]
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20
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Brynildsen JK, Lee BG, Perron IJ, Jin S, Kim SF, Blendy JA. Activation of AMPK by metformin improves withdrawal signs precipitated by nicotine withdrawal. Proc Natl Acad Sci U S A 2018; 115:4282-4287. [PMID: 29610348 PMCID: PMC5910809 DOI: 10.1073/pnas.1707047115] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Cigarette smoking is the leading cause of preventable disease and death in the United States, with more persons dying from nicotine addiction than any other preventable cause of death. Even though smoking cessation incurs multiple health benefits, the abstinence rate remains low with current medications. Here we show that the AMP-activated protein kinase (AMPK) pathway in the hippocampus is activated following chronic nicotine use, an effect that is rapidly reversed by nicotine withdrawal. Increasing pAMPK levels and, consequently, downstream AMPK signaling pharmacologically attenuate anxiety-like behavior following nicotine withdrawal. We show that metformin, a known AMPK activator in the periphery, reduces withdrawal symptoms through a mechanism dependent on the presence of the AMPKα subunits within the hippocampus. This study provides evidence of a direct effect of AMPK modulation on nicotine withdrawal symptoms and suggests central AMPK activation as a therapeutic target for smoking cessation.
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Affiliation(s)
- Julia K Brynildsen
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Bridgin G Lee
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Isaac J Perron
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Sunghee Jin
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21224
| | - Sangwon F Kim
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21224;
- Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21224
| | - Julie A Blendy
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104;
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21
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Gelineau RR, Arruda NL, Hicks JA, Monteiro De Pina I, Hatzidis A, Seggio JA. The behavioral and physiological effects of high-fat diet and alcohol consumption: Sex differences in C57BL6/J mice. Brain Behav 2017; 7:e00708. [PMID: 28638713 PMCID: PMC5474711 DOI: 10.1002/brb3.708] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND AND OBJECTIVE Animal studies can be a great tool to investigate sex differences in a variety of different ways, including behavioral and physiological responses to drug treatments and different "lifestyle variables" such as diets. Consumption of both high-fat diets and alcohol is known to affect anxiety behaviors and overall health. This project investigated how high-fat diet and alcohol access and its combination affected the behavior and physiology of male and female C57BL/6J mice. METHOD Mice were separated into three food groups: high-fat diet, 10% fat diet, and regular chow, and each group was paired with either water or 10% alcohol. Behavioral assays included diet and alcohol preference, light-dark box, open field, and feeding and drinking measurements. Physiological measures included glucose tolerance tests and measurement of brain-derived neurotrophic factor, insulin, and leptin levels. RESULTS Females and males differed in the open field, as male mice decreased activity, while females increased activity when consuming high-fat diet. While females consumed more ethanol than males, alcohol consumption was able to improve glucose tolerance and increase anxiety in both sexes. Lastly, females were more resistant to the physiological changes caused by high-fat diet than males, as females consuming high-fat diet exhibited decreased insulin secretion, less change to brain-derived neurotrophic factor levels, and better glucose tolerance than males consuming high-fat diet. CONCLUSION These results suggest that the response to high-fat diet and alcohol consumption is sex dependent and that males are more affected both behaviorally and physiologically by high-fat diet compared to females.
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Affiliation(s)
- Rachel R Gelineau
- Department of Biological Sciences Bridgewater State University Bridgewater MA USA
| | - Nicole L Arruda
- Department of Biological Sciences Bridgewater State University Bridgewater MA USA
| | - Jasmin A Hicks
- Department of Biological Sciences Bridgewater State University Bridgewater MA USA
| | | | - Aikaterini Hatzidis
- Department of Biological Sciences Bridgewater State University Bridgewater MA USA
| | - Joseph A Seggio
- Department of Biological Sciences Bridgewater State University Bridgewater MA USA
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Liu W, Liu J, Xia J, Xue X, Wang H, Qi Z, Ji L. Leptin receptor knockout-induced depression-like behaviors and attenuated antidepressant effects of exercise are associated with STAT3/SOCS3 signaling. Brain Behav Immun 2017; 61:297-305. [PMID: 28069387 DOI: 10.1016/j.bbi.2017.01.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Revised: 12/24/2016] [Accepted: 01/05/2017] [Indexed: 01/16/2023] Open
Abstract
Relatively little has been known about pathophysiological mechanisms contributing to the development of neuropsychiatric symptoms in the context of metabolic syndrome. Impaired leptin signaling activation in db/db mice has been proposed as a potential link between behavioral and metabolic disorders. Our previous studies have shown that exercise has the beneficial effects on a depression-like and insulin-resistant state in mice. The present study aimed to determine whether and how leptin receptor knockout (db/db) induces depression-like behaviors, and to identify the antidepressant effects of swimming exercise in db/db mice. Our results support the validity of db/db mice as an animal model to study depression with metabolic abnormalities, but fail to confirm the improvement of exercise on depression. LepRb knockout-induced depression-like behaviors are associated with STAT3/SOCS3 signaling but independent of IKKβ/NFκB signaling. Our findings suggest the potential importance of LepRb as an exercise-regulated target for depression, also representing a new target underlying treatment-resistant depression.
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Affiliation(s)
- Weina Liu
- Key Laboratory of Adolescent Health Assessment and Exercise Intervention of Ministry of Education, East China Normal University, Shanghai 200241, China; School of Physical Education & Health Care, East China Normal University, Shanghai 200241, China
| | - Jiatong Liu
- Key Laboratory of Adolescent Health Assessment and Exercise Intervention of Ministry of Education, East China Normal University, Shanghai 200241, China; School of Physical Education & Health Care, East China Normal University, Shanghai 200241, China
| | - Jie Xia
- Key Laboratory of Adolescent Health Assessment and Exercise Intervention of Ministry of Education, East China Normal University, Shanghai 200241, China; School of Physical Education & Health Care, East China Normal University, Shanghai 200241, China
| | - Xiangli Xue
- Key Laboratory of Adolescent Health Assessment and Exercise Intervention of Ministry of Education, East China Normal University, Shanghai 200241, China; School of Physical Education & Health Care, East China Normal University, Shanghai 200241, China
| | - Hongmei Wang
- Key Laboratory of Adolescent Health Assessment and Exercise Intervention of Ministry of Education, East China Normal University, Shanghai 200241, China; School of Physical Education & Health Care, East China Normal University, Shanghai 200241, China
| | - Zhengtang Qi
- Key Laboratory of Adolescent Health Assessment and Exercise Intervention of Ministry of Education, East China Normal University, Shanghai 200241, China; School of Physical Education & Health Care, East China Normal University, Shanghai 200241, China.
| | - Liu Ji
- Key Laboratory of Adolescent Health Assessment and Exercise Intervention of Ministry of Education, East China Normal University, Shanghai 200241, China; School of Physical Education & Health Care, East China Normal University, Shanghai 200241, China.
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Dunford EC, Riddell MC. The Metabolic Implications of Glucocorticoids in a High-Fat Diet Setting and the Counter-Effects of Exercise. Metabolites 2016; 6:metabo6040044. [PMID: 27929385 PMCID: PMC5192450 DOI: 10.3390/metabo6040044] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 11/25/2016] [Accepted: 11/30/2016] [Indexed: 02/06/2023] Open
Abstract
Glucocorticoids (GCs) are steroid hormones, naturally produced by activation of the hypothalamic-pituitary-adrenal (HPA) axis, that mediate the immune and metabolic systems. Synthetic GCs are used to treat a number of inflammatory conditions and diseases including lupus and rheumatoid arthritis. Generally, chronic or high dose GC administration is associated with side effects such as steroid-induced skeletal muscle loss, visceral adiposity, and diabetes development. Patients who are taking exogenous GCs could also be more susceptible to poor food choices, but the effect that increasing fat consumption in combination with elevated exogenous GCs has only recently been investigated. Overall, these studies show that the damaging metabolic effects initiated through exogenous GC treatment are significantly amplified when combined with a high fat diet (HFD). Rodent studies of a HFD and elevated GCs demonstrate more glucose intolerance, hyperinsulinemia, visceral adiposity, and skeletal muscle lipid deposition when compared to rodents subjected to either treatment on its own. Exercise has recently been shown to be a viable therapeutic option for GC-treated, high-fat fed rodents, with the potential mechanisms still being examined. Clinically, these mechanistic studies underscore the importance of a low fat diet and increased physical activity levels when individuals are given a course of GC treatment.
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Affiliation(s)
- Emily C Dunford
- School of Kinesiology and Health Science, Faculty of Health, Muscle Health Research Center and Physical Activity and Chronic Disease Unit, York University, 4700 Keele Street, Toronto, ON M3J 1P3, Canada.
| | - Michael C Riddell
- School of Kinesiology and Health Science, Faculty of Health, Muscle Health Research Center and Physical Activity and Chronic Disease Unit, York University, 4700 Keele Street, Toronto, ON M3J 1P3, Canada.
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Wall CE, Yu RT, Atkins AR, Downes M, Evans RM. Nuclear receptors and AMPK: can exercise mimetics cure diabetes? J Mol Endocrinol 2016; 57:R49-58. [PMID: 27106806 PMCID: PMC4929025 DOI: 10.1530/jme-16-0073] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Accepted: 04/19/2016] [Indexed: 01/01/2023]
Abstract
Endurance exercise can lead to systemic improvements in insulin sensitivity and metabolic homeostasis, and is an effective approach to combat metabolic diseases. Pharmacological compounds that recapitulate the beneficial effects of exercise, also known as 'exercise mimetics', have the potential to improve disease symptoms of metabolic syndrome. These drugs, which can increase energy expenditure, suppress hepatic gluconeogenesis, and induce insulin sensitization, have accordingly been highly scrutinized for their utility in treating metabolic diseases including diabetes. Nevertheless, the identity of an efficacious exercise mimetic still remains elusive. In this review, we highlight several nuclear receptors and cofactors that are putative molecular targets for exercise mimetics, and review recent studies that provide advancements in our mechanistic understanding of how exercise mimetics exert their beneficial effects. We also discuss evidence from clinical trials using these compounds in human subjects to evaluate their efficacy in treating diabetes.
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Affiliation(s)
- Christopher E Wall
- Gene Expression LaboratorySalk Institute, La Jolla, California, USA Biomedical Sciences Graduate ProgramUC San Diego, La Jolla, California, USA
| | - Ruth T Yu
- Gene Expression LaboratorySalk Institute, La Jolla, California, USA
| | - Anne R Atkins
- Gene Expression LaboratorySalk Institute, La Jolla, California, USA
| | - Michael Downes
- Gene Expression LaboratorySalk Institute, La Jolla, California, USA
| | - Ronald M Evans
- Gene Expression LaboratorySalk Institute, La Jolla, California, USA Howard Hughes Medical InstituteSalk Institute, La Jolla, California, USA
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Hicks JA, Hatzidis A, Arruda NL, Gelineau RR, De Pina IM, Adams KW, Seggio JA. Voluntary wheel-running attenuates insulin and weight gain and affects anxiety-like behaviors in C57BL6/J mice exposed to a high-fat diet. Behav Brain Res 2016; 310:1-10. [PMID: 27154535 DOI: 10.1016/j.bbr.2016.04.051] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 04/11/2016] [Accepted: 04/28/2016] [Indexed: 12/17/2022]
Abstract
It is widely accepted that lifestyle plays a crucial role on the quality of life in individuals, particularly in western societies where poor diet is correlated to alterations in behavior and the increased possibility of developing type-2 diabetes. While exercising is known to produce improvements to overall health, there is conflicting evidence on how much of an effect exercise has staving off the development of type-2 diabetes or counteracting the effects of diet on anxiety. Thus, this study investigated the effects of voluntary wheel-running access on the progression of diabetes-like symptoms and open field and light-dark box behaviors in C57BL/6J mice fed a high-fat diet. C57BL/6J mice were placed into either running-wheel cages or cages without a running-wheel, given either regular chow or a high-fat diet, and their body mass, food consumption, glucose tolerance, insulin and c-peptide levels were measured. Mice were also exposed to the open field and light-dark box tests for anxiety-like behaviors. Access to a running-wheel partially attenuated the obesity and hyperinsulinemia associated with high-fat diet consumption in these mice, but did not affect glucose tolerance or c-peptide levels. Wheel-running strongly increased anxiety-like and decreased explorative-like behaviors in the open field and light-dark box, while high-fat diet consumption produced smaller increases in anxiety. These results suggest that voluntary wheel-running can assuage some, but not all, of the physiological problems associated with high-fat diet consumption, and can modify anxiety-like behaviors regardless of diet consumed.
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Affiliation(s)
- Jasmin A Hicks
- Department of Biological Sciences, Bridgewater State University, 24 Park Ave., Bridgewater, MA 02325, USA
| | - Aikaterini Hatzidis
- Department of Biological Sciences, Bridgewater State University, 24 Park Ave., Bridgewater, MA 02325, USA
| | - Nicole L Arruda
- Department of Biological Sciences, Bridgewater State University, 24 Park Ave., Bridgewater, MA 02325, USA
| | - Rachel R Gelineau
- Department of Biological Sciences, Bridgewater State University, 24 Park Ave., Bridgewater, MA 02325, USA
| | - Isabella Monteiro De Pina
- Department of Biological Sciences, Bridgewater State University, 24 Park Ave., Bridgewater, MA 02325, USA
| | - Kenneth W Adams
- Department of Biological Sciences, Bridgewater State University, 24 Park Ave., Bridgewater, MA 02325, USA
| | - Joseph A Seggio
- Department of Biological Sciences, Bridgewater State University, 24 Park Ave., Bridgewater, MA 02325, USA.
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Linking Mitochondria to Synapses: New Insights for Stress-Related Neuropsychiatric Disorders. Neural Plast 2016; 2016:3985063. [PMID: 26885402 PMCID: PMC4738951 DOI: 10.1155/2016/3985063] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Accepted: 11/09/2015] [Indexed: 12/31/2022] Open
Abstract
The brain evolved cellular mechanisms for adapting synaptic function to energy supply. This is particularly evident when homeostasis is challenged by stress. Signaling loops between the mitochondria and synapses scale neuronal connectivity with bioenergetics capacity. A biphasic “inverted U shape” response to the stress hormone glucocorticoids is demonstrated in mitochondria and at synapses, modulating neural plasticity and physiological responses. Low dose enhances neurotransmission, synaptic growth, mitochondrial functions, learning, and memory whereas chronic, higher doses produce inhibition of these functions. The range of physiological effects by stress and glucocorticoid depends on the dose, duration, and context at exposure. These criteria are met by neuronal activity and the circadian, stress-sensitive and ultradian, stress-insensitive modes of glucocorticoid secretion. A major hallmark of stress-related neuropsychiatric disorders is the disrupted glucocorticoid rhythms and tissue resistance to signaling with the glucocorticoid receptor (GR). GR resistance could result from the loss of context-dependent glucocorticoid signaling mediated by the downregulation of the activity-dependent neurotrophin BDNF. The coincidence of BDNF and GR signaling changes glucocorticoid signaling output with consequences on mitochondrial respiration efficiency, synaptic plasticity, and adaptive trajectories.
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The Role of Nitric Oxide in the Antidepressant Actions of 5-Aminoimidazole-4-Carboxamide-1-β-D-Ribofuranoside in Insulin-Resistant Mice. Psychosom Med 2016; 78:102-12. [PMID: 26569535 DOI: 10.1097/psy.0000000000000268] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
OBJECTIVE Depression and Type 2 diabetes mellitus are interrelated conditions, but the underlying neurobiology is insufficiently understood. The current study compared the effects of a pharmacological manipulation with 5-aminoimidazole-4-carboxamide-1-β-D-ribofuranoside (AICAR) that targets neurobiological processes by adenosine 5'-monophosphate-activated protein kinase activation versus exercise on depression-like behavior and nitric oxide (NO)-related measures. METHODS A mouse model of a depression-like and insulin-resistant state, induced by the co-treatment of high-fat diet and corticosterone administration, was used to examine the antidepressant action of AICAR and exercise. RESULTS Data showed that AICAR was a putative antidepressant in the depression-like and insulin-resistant mice (total ambulatory distance in the open-field test was 5120.69 ± 167.47 cm, mobility duration in the forced swim test was 17.61 ± 1.54 seconds, latency to feed in the novelty suppressed feeding test was 255.67 ± 37.80 seconds; all p values < .05). Furthermore, the antidepressant actions of AICAR required endothelial nitric oxide synthase activity with increased NO production in the prefrontal cortex, whereas corticosterone-induced expression of neuronal nitric oxide synthase and NO production may increase the risk of depression. In contrast to the traditional antidepressants such as ketamine and imipramine, AICAR interfered with the effects of insulin in skeletal muscle in the context of high-fat diet, consistent with the potential antidepressant effects of AICAR. Exercise also resulted in activation of adenosine 5'-monophosphate-activated protein kinase, nitric oxide synthase, and NO production (all p values < .01), which in turn may be implicated in the antidepressant effects of exercise. CONCLUSIONS These findings suggest that NO is an essential signal mediating the antidepressant actions of AICAR. Ultimately, the concurrent effects of AICAR on brain insulin action and mitochondrial function suggest a potential of neural insulin resistance, which may contribute to our understanding of the comorbidity of depression and Type 2 diabetes.
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Zemdegs J, Quesseveur G, Jarriault D, Pénicaud L, Fioramonti X, Guiard BP. High-fat diet-induced metabolic disorders impairs 5-HT function and anxiety-like behavior in mice. Br J Pharmacol 2015; 173:2095-110. [PMID: 26472268 DOI: 10.1111/bph.13343] [Citation(s) in RCA: 104] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Revised: 09/03/2015] [Accepted: 09/09/2015] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND AND PURPOSE The link between type 2 diabetes mellitus (T2DM) and depression is bidirectional. However, the possibility that metabolic disorders may elicit anxiogenic-like/depressive-like symptoms or alter the efficacy of antidepressant drugs remains poorly documented. This study explored the influence of T2DM on emotionality and proposed a therapeutic strategy that might be used in depressed diabetic patients. EXPERIMENTAL APPROACH Mice were fed a high-fat diet (HFD) and subjected to a full comprehensive metabolic and behavioural analysis to establish correlations between metabolic and psychiatric disorders. In vivo intra-hippocampal microdialysis was also applied to propose a mechanism underpinning the phenotype of mice fed the HFD. Finally, we tested whether chronic administration of the selective 5-HT reuptake inhibitor escitalopram or HFD withdrawal could reverse HFD-induced metabolic and behavioural anomalies. KEY RESULTS The increased body weight, hyperglycaemia and impaired glucose tolerance in response to HFD were correlated with anxiogenic-like/depressive-like symptoms. Moreover, this phenotype was associated with decreased extracellular 5-HT levels in the hippocampus which may result from increased sensitivity of the dorsal raphe 5-HT1A autoreceptor. Interestingly, the beneficial effect of prolonged administration of escitalopram was abolished in HFD-fed mice. On the contrary, HFD withdrawal completely reversed metabolic impairments and positively changed symptoms of anxiety, although some behavioural anomalies persisted. CONCLUSIONS AND IMPLICATIONS Our data provide clear-cut evidence that both pathologies are finely correlated and associated with impaired 5-HT mediated neurotransmission in the hippocampus. Further experiments are warranted to define the most adequate strategy for the treatment of such co-morbidity. LINKED ARTICLES This article is part of a themed section on Updating Neuropathology and Neuropharmacology of Monoaminergic Systems. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v173.13/issuetoc.
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Affiliation(s)
- Juliane Zemdegs
- Faculté de Pharmacie, Université Paris Sud XI, Châtenay-Malabry, Cedex, France.,Centre National de la Recherche Scientifique (CNRS), Centre de Recherches sur la Cognition Animale (CRCA) UMR5169, Toulouse, France.,UPS CRCA UMR5169, Université de Toulouse, Toulouse, France.,Center des Sciences du Goût et de l'Alimentation, UMR 6265 CNRS 1324 INRA, Université de Bourgogne Franche-Comté, Dijon, France
| | - Gaël Quesseveur
- Faculté de Pharmacie, Université Paris Sud XI, Châtenay-Malabry, Cedex, France
| | - David Jarriault
- Center des Sciences du Goût et de l'Alimentation, UMR 6265 CNRS 1324 INRA, Université de Bourgogne Franche-Comté, Dijon, France
| | - Luc Pénicaud
- Center des Sciences du Goût et de l'Alimentation, UMR 6265 CNRS 1324 INRA, Université de Bourgogne Franche-Comté, Dijon, France
| | - Xavier Fioramonti
- Center des Sciences du Goût et de l'Alimentation, UMR 6265 CNRS 1324 INRA, Université de Bourgogne Franche-Comté, Dijon, France
| | - Bruno P Guiard
- Faculté de Pharmacie, Université Paris Sud XI, Châtenay-Malabry, Cedex, France.,Centre National de la Recherche Scientifique (CNRS), Centre de Recherches sur la Cognition Animale (CRCA) UMR5169, Toulouse, France.,UPS CRCA UMR5169, Université de Toulouse, Toulouse, France
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Otsuka A, Shiuchi T, Chikahisa S, Shimizu N, Séi H. Voluntary exercise and increased food intake after mild chronic stress improve social avoidance behavior in mice. Physiol Behav 2015; 151:264-71. [DOI: 10.1016/j.physbeh.2015.07.024] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Revised: 07/05/2015] [Accepted: 07/17/2015] [Indexed: 12/22/2022]
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30
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Involvement of the serotonergic system in the anxiolytic-like effect of 2-phenylethynyl butyltellurium in mice. Behav Brain Res 2015; 277:221-7. [DOI: 10.1016/j.bbr.2014.05.071] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Revised: 05/29/2014] [Accepted: 05/30/2014] [Indexed: 11/15/2022]
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