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Schilliger Z, Alemán-Gómez Y, Magnus Smith M, Celen Z, Meuleman B, Binz PA, Steullet P, Do KQ, Conus P, Merglen A, Piguet C, Dwir D, Klauser P. Sex-specific interactions between stress axis and redox balance are associated with internalizing symptoms and brain white matter microstructure in adolescents. Transl Psychiatry 2024; 14:30. [PMID: 38233401 PMCID: PMC10794182 DOI: 10.1038/s41398-023-02728-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 12/20/2023] [Accepted: 12/22/2023] [Indexed: 01/19/2024] Open
Abstract
Adolescence is marked by the maturation of systems involved in emotional regulation and by an increased risk for internalizing disorders (anxiety/depression), especially in females. Hypothalamic-pituitary-adrenal (HPA)-axis function and redox homeostasis (balance between reactive oxygen species and antioxidants) have both been associated with internalizing disorders and may represent critical factors for the development of brain networks of emotional regulation. However, sex-specific interactions between these factors and internalizing symptoms and their link with brain maturation remain unexplored. We investigated in a cohort of adolescents aged 13-15 from the general population (n = 69) whether sex-differences in internalizing symptoms were associated with the glutathione (GSH)-redox cycle homeostasis and HPA-axis function and if these parameters were associated with brain white matter microstructure development. Female adolescents displayed higher levels of internalizing symptoms, GSH-peroxidase (GPx) activity and cortisol/11-deoxycortisol ratio than males. There was a strong correlation between GPx and GSH-reductase (Gred) activities in females only. The cortisol/11-deoxycortisol ratio, related to the HPA-axis activity, was associated with internalizing symptoms in both sexes, whereas GPx activity was associated with internalizing symptoms in females specifically. The cortisol/11-deoxycortisol ratio mediated sex-differences in internalizing symptoms and the association between anxiety and GPx activity in females specifically. In females, GPx activity was positively associated with generalized fractional anisotropy in widespread white matter brain regions. We found that higher levels of internalizing symptoms in female adolescents than in males relate to sex-differences in HPA-axis function. In females, our results suggest an important interplay between HPA-axis function and GSH-homeostasis, a parameter strongly associated with brain white matter microstructure.
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Affiliation(s)
- Zoé Schilliger
- Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
- Service of Child and Adolescent Psychiatry, Department of Psychiatry, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Yasser Alemán-Gómez
- Connectomics Lab, Department of Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Mariana Magnus Smith
- Division of General Pediatrics, Geneva University Hospitals and Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Zeynep Celen
- Department of Psychiatry, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Ben Meuleman
- Department of Psychiatry, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Pierre-Alain Binz
- Service of Clinical Chemistry, Lausanne University Hospital and University of Lausanne, 1011, Lausanne, Switzerland
| | - Pascal Steullet
- Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Kim Q Do
- Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Philippe Conus
- Service of General Psychiatry, Department of Psychiatry, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Arnaud Merglen
- Division of General Pediatrics, Geneva University Hospitals and Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Camille Piguet
- Division of General Pediatrics, Geneva University Hospitals and Faculty of Medicine, University of Geneva, Geneva, Switzerland
- Department of Psychiatry, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Daniella Dwir
- Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Paul Klauser
- Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.
- Service of Child and Adolescent Psychiatry, Department of Psychiatry, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.
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2
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Toh P, Seale LA, Berry MJ, Torres DJ. Prolonged maternal exposure to glucocorticoids alters selenoprotein expression in the developing brain. Front Mol Neurosci 2023; 16:1115993. [PMID: 37033382 PMCID: PMC10080067 DOI: 10.3389/fnmol.2023.1115993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Accepted: 03/09/2023] [Indexed: 04/11/2023] Open
Abstract
Aberrant activation of the stress-response system in early life can alter neurodevelopment and cause long-term neurological changes. Activation of the hypothalamic-pituitary-adrenal axis releases glucocorticoids into the bloodstream, to help the organism adapt to the stressful stimulus. Elevated glucocorticoid levels can promote the accumulation of reactive oxygen species, and the brain is highly susceptible to oxidative stress. The essential trace element selenium is obtained through diet, is used to synthesize antioxidant selenoproteins, and can mitigate glucocorticoid-mediated oxidative damage. Glucocorticoids can impair antioxidant enzymes in the brain, and could potentially influence selenoprotein expression. We hypothesized that exposure to high levels of glucocorticoids would disrupt selenoprotein expression in the developing brain. C57 wild-type dams of recently birthed litters were fed either a moderate (0.25 ppm) or high (1 ppm) selenium diet and administered corticosterone (75 μg/ml) via drinking water during postnatal days 1 to 15, after which the brains of the offspring were collected for western blot analysis. Glutathione peroxidase 1 and 4 levels were increased by maternal corticosterone exposure within the prefrontal cortex, hippocampus, and hypothalamus of offspring. Additionally, levels of the glucocorticoid receptor were decreased in the hippocampus and selenoprotein W was elevated in the hypothalamus by corticosterone. Maternal consumption of a high selenium diet independently decreased glucocorticoid receptor levels in the hippocampus of offspring of both sexes, as well as in the prefrontal cortex of female offspring. This study demonstrates that early life exposure to excess glucocorticoid levels can alter selenoprotein levels in the developing brain.
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Affiliation(s)
| | | | | | - Daniel J. Torres
- Pacific Biosciences Research Center, School of Ocean and Earth Science and Technology, University of Hawaii at Manoa, Honolulu, HI, United States
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Chronic clomipramine treatment reverses depressogenic-like effects of a chronic treatment with dexamethasone in rats. IBRO Neurosci Rep 2022; 13:147-155. [PMID: 36035970 PMCID: PMC9400083 DOI: 10.1016/j.ibneur.2022.07.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 07/27/2022] [Accepted: 07/30/2022] [Indexed: 11/23/2022] Open
Abstract
Corticosteroids are widely used in medicine, for their anti-inflammatory and immunosuppressive actions, but can lead to troubling psychiatric side-effects. In fact, corticosteroids can induce many symptoms and syndromes, for example, mood disorders, anxiety and panic disorder, suicidal thinking and behavior. Furthermore, chronic stress and the administration of exogenous glucocorticoids are reported to induce affective changes in humans and rodents that relate to depressive state. Animal models are highly useful tools for studying the depression etiology. Face validity, construct validity, and predictive validity are the main criteria to evaluate animal depression models. The present study aimed to investigate the behavioral, cognitive, and biochemical effects of a chronic administration of DEX on Wistar rats. Wistar rats were administered daily with DEX (1.5 mg/kg, i.p., 21 days) or saline, the clomipramine treatment (2 mg/kg, i.p.) was realized just after the DEX injections for 21 days. DEX induced changes were evaluated by: forced swimming, novelty suppressed feeding, saccharin preference, open field, Morris water maze, and oxidative stress state in the brain. Results showed that chronic DEX administration conduct to a range of depression-related behavioral traits, including anhedonia, despair, weight loss, anxiety-like behavior, and cognitive impairments, which fill the face validity criterion. The DEX induced behavioral changes may result from the massive production of oxidative stress agents. This sustains the etiological hypothesis claiming that hyper-circulating glucocorticoid resulting from HPA dysfunction induces damage in certain neural structures related to depressive disorder, essentially the hippocampus. The antidepressant treatment has restored the behavioral state of rats which fills the predictive validity criterion.
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Lemonnier C, Bize P, Boonstra R, Dobson FS, Criscuolo F, Viblanc VA. Effects of the social environment on vertebrate fitness and health in nature: Moving beyond the stress axis. Horm Behav 2022; 145:105232. [PMID: 35853411 DOI: 10.1016/j.yhbeh.2022.105232] [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: 03/14/2022] [Revised: 06/04/2022] [Accepted: 06/22/2022] [Indexed: 11/22/2022]
Abstract
Social interactions are a ubiquitous feature of the lives of vertebrate species. These may be cooperative or competitive, and shape the dynamics of social systems, with profound effects on individual behavior, physiology, fitness, and health. On one hand, a wealth of studies on humans, laboratory animal models, and captive species have focused on understanding the relationships between social interactions and individual health within the context of disease and pathology. On the other, ecological studies are attempting an understanding of how social interactions shape individual phenotypes in the wild, and the consequences this entails in terms of adaptation. Whereas numerous studies in wild vertebrates have focused on the relationships between social environments and the stress axis, much remains to be done in understanding how socially-related activation of the stress axis coordinates other key physiological functions related to health. Here, we review the state of our current knowledge on the effects that social interactions may have on other markers of vertebrate fitness and health. Building upon complementary findings from the biomedical and ecological fields, we identify 6 key physiological functions (cellular metabolism, oxidative stress, cellular senescence, immunity, brain function, and the regulation of biological rhythms) which are intimately related to the stress axis, and likely directly affected by social interactions. Our goal is a holistic understanding of how social environments affect vertebrate fitness and health in the wild. Whereas both social interactions and social environments are recognized as important sources of phenotypic variation, their consequences on vertebrate fitness, and the adaptive nature of social-stress-induced phenotypes, remain unclear. Social flexibility, or the ability of an animal to change its social behavior with resulting changes in social systems in response to fluctuating environments, has emerged as a critical underlying factor that may buffer the beneficial and detrimental effects of social environments on vertebrate fitness and health.
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Affiliation(s)
- Camille Lemonnier
- Ecole Normale Supérieur de Lyon, 69342 Lyon, France; Université de Strasbourg, CNRS, IPHC UMR 7178, 67000 Strasbourg, France.
| | - Pierre Bize
- School of Biological Sciences, University of Aberdeen, Aberdeen, UK; Swiss Institute of Ornithology, Sempach, Switzerland
| | - Rudy Boonstra
- Department of Biological Sciences, University of Toronto Scarborough, Toronto, Canada
| | - F Stephen Dobson
- Université de Strasbourg, CNRS, IPHC UMR 7178, 67000 Strasbourg, France; Department of Biological Sciences, Auburn University, Auburn, AL, USA
| | | | - Vincent A Viblanc
- Université de Strasbourg, CNRS, IPHC UMR 7178, 67000 Strasbourg, France
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Valchářová T, Slavík O, Horký P, Stará A, Hrušková I, Maciak M, Pešta M, Velíšek J. Stressful Daylight: Differences in Diel Rhythmicity Between Albino and Pigmented Fish. Front Ecol Evol 2022. [DOI: 10.3389/fevo.2022.890874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
In laboratory experiments, variously colored strains of animals, including those with albino phenotypes, are commonly used. The melanocortin theory suggests, however, that coloration phenotypes alter animal physiology and behavior. Animals with the albino phenotype show photoreceptor degradation associated with lowered visual accuracy, escape reactions, etc., presumably accompanied by prevailing nocturnal activity and lowered aggressiveness. This assumption was tested in small groups of albino and pigmented European catfish, Silurus glanis, during the diel cycle. The frequency of agonistic interactions was observed during mutual contests for shelters, and subsequently, blood plasma, brain, gill, and liver samples were collected to evaluate stress parameters. In an experimental arena with shelters, the light/dark rhythmicity of locomotor activity and aggressiveness of the two phenotypes were comparable; the peak was observed at night, and a lower peak was observed at dawn. In an experimental stream without shelters, the peak of locomotor activity occurred at night for only the pigmented phenotype. In the evaluation of 4 antioxidants and 1 oxidative stress indicator, representing a total of 15 indices, albino fish showed significant rhythmicity for 8 indices, whereas pigmented catfish showed significant rhythmicity for 5 indices. The production of blood stress parameters with the peak during the day occurred only in albino fish. A complex model was fitted with the aim of evaluating the links between behavioral and biochemical indices. Time periodicity was modeled using a sine wave and confirmed parallel courses of agonistic interactions in the catfish groups; the peak at dawn was associated with a 4.08-fold (conf. int. 3.53–4.7) increase in such interactions. The changes in glucose and superoxide dismutase concentrations varied with phenotype, while the effects of cortisol, lactate and catalase did not. In summary, the rhythmicity of locomotor activity and changes in the aggressiveness of catfish were influenced by shelter availability, and the effect of light-induced stress was more apparent in albino fish than in pigmented conspecific fish. The results suggested that laboratory-raised animals with pigmentation patterns naturally occurring in the wild show more reasonable values during experiments than those with an albino phenotype.
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Chandley MJ, Szebeni A, Szebeni K, Wang-Heaton H, Garst J, Stockmeier CA, Lewis NH, Ordway GA. Markers of elevated oxidative stress in oligodendrocytes captured from the brainstem and occipital cortex in major depressive disorder and suicide. Prog Neuropsychopharmacol Biol Psychiatry 2022; 117:110559. [PMID: 35452747 DOI: 10.1016/j.pnpbp.2022.110559] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 03/30/2022] [Accepted: 04/13/2022] [Indexed: 10/18/2022]
Abstract
Major depressive disorder (MDD) and suicide have been associated with elevated indices of oxidative damage in the brain, as well as white matter pathology including reduced myelination by oligodendrocytes. Oligodendrocytes highly populate white matter and are inherently susceptible to oxidative damage. Pathology of white matter oligodendrocytes has been reported to occur in brain regions that process behaviors that are disrupted in MDD and that may contribute to suicidal behavior. The present study was designed to determine whether oligodendrocyte pathology related to oxidative damage extends to brain areas outside of those that are traditionally considered to contribute to the psychopathology of MDD and suicide. Relative telomere lengths and the gene expression of five antioxidant-related genes, SOD1, SOD2, GPX1, CAT, and AGPS were measured in oligodendrocytes laser captured from two non-limbic brain areas: occipital cortical white matter and the brainstem locus coeruleus. Postmortem brain tissues were obtained from brain donors that died by suicide and had an active MDD at the time of death, and from psychiatrically normal control donors. Relative telomere lengths were significantly reduced in oligodendrocytes of both brain regions in MDD donors as compared to control donors. Three antioxidant-related genes (SOD1, SOD2, GPX1) were significantly reduced and one was significantly elevated (AGPS) in oligodendrocytes from both brain regions in MDD as compared to control donors. These findings suggest that oligodendrocyte pathology in MDD and suicide is widespread in the brain and not restricted to brain areas commonly associated with depression psychopathology.
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Affiliation(s)
- Michelle J Chandley
- Department of Biomedical Sciences, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, United States of America.
| | - Attila Szebeni
- Department of Biomedical Sciences, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, United States of America
| | - Katalin Szebeni
- Department of Biomedical Sciences, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, United States of America
| | - Hui Wang-Heaton
- Department of Biomedical Sciences, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, United States of America
| | - Jacob Garst
- Department of Chemistry, College of Arts and Sciences, East Tennessee State University, Johnson City, TN, United States of America
| | - Craig A Stockmeier
- Department of Psychiatry and Human Behavior, University of Mississippi Medical Center, Jackson, MS, United States of America
| | - Nicole H Lewis
- Department of Medical Education, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, United States of America
| | - Gregory A Ordway
- Department of Biomedical Sciences, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, United States of America
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Bagheri F, Goudarzi I, Lashkarbolouki T, Elahdadi Salmani M, Goudarzi A, Morley-Fletcher S. The Combined Effects of Perinatal Ethanol and Early-Life Stress on Cognition and Risk-Taking Behavior through Oxidative Stress in Rats. Neurotox Res 2022; 40:925-940. [PMID: 35507233 DOI: 10.1007/s12640-022-00506-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 04/07/2022] [Accepted: 04/09/2022] [Indexed: 11/29/2022]
Abstract
Both prenatal ethanol and early-life stress have been shown to induce reduced risk-taking and explorative behavior as well as cognitive dysfunction in the offspring. In this study, we examined the effect of combined exposure to ethanol and early stress on maternal care, exploratory behavior, memory performances, and oxidative stress in male offspring. Pregnant rats were exposed to ethanol (4 g/kg) from gestational day (GD) 6-to postnatal day (PND) 14 and limited nesting material (LNS) from PND0-PND14 individually or in combination. Maternal behavior was evaluated during diurnal cycle. The level of corticosterone hormone and markers of oxidative stress were evaluated in the pups. Risk-taking and explorative behavior were assessed with the elevated-plus maze (EPM) test and cognitive behavior with the Morris water maze (MWM), novel object recognition (NORT), and object location memory (OLM) tests. In the mothers, perinatal alcohol or LNS either alone or in combination decreased maternal behavior. In the offspring, the combination of the two factors significantly increased the pup's plasma corticosterone concentration in comparison with ethanol and LNS alone. Reduced risk-taking behavior was observed in the ethanol, LNS and ethanol + LNS groups compared with the control group, and this was amplified in the co-exposure of ethanol and LNS groups. The MWM, NORT, and OLM tests revealed spatial and recognition memory impairment in the ethanol and LNS groups. This impairment was more profound in the co-exposure of ethanol and LNS. Also, we observed a significant decrease in superoxide dismutase (SOD) and glutathione peroxidase (GPx) activities and an increase in malondialdehyde (MDA) level in the hippocampus of ethanol and LNS co-exposed animals as compared with individual exposure of ethanol and LNS. While each factor independently produced similar outcomes, the results indicate that the dual exposure paradigm could significantly strengthen the outcomes.
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Affiliation(s)
| | - Iran Goudarzi
- School of Biology, Damghan University, Damghan, Iran.
| | | | | | - Afsaneh Goudarzi
- Department of Clinical Biochemistry, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sara Morley-Fletcher
- UMR 8576, Univ. Lille, CNRS, UGSF - Unité de Glycobiologie Structurale Et Fonctionnelle, 59000, Lille, France
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8
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Characterization of the Impacts of Living at High Altitude in Taif: Oxidative Stress Biomarker Alterations and Immunohistochemical Changes. Curr Issues Mol Biol 2022; 44:1610-1625. [PMID: 35723368 PMCID: PMC9164078 DOI: 10.3390/cimb44040110] [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: 03/05/2022] [Revised: 04/05/2022] [Accepted: 04/06/2022] [Indexed: 11/17/2022] Open
Abstract
At high elevations, the human body experiences a number of pathological, physiological, and biochemical changes, all of which have adverse impacts on human health and organ vitality. This study aimed to investigate the alterations in the liver and kidney biomarkers, oxidative stress markers, gene expression, and cellular histology of rats maintained at high altitudes and normal sea level. A total of twenty male Wistar rats at 2 months of age were randomly assigned to two groups. The rats in group A were maintained at normal sea level in Jeddah, whereas rats in group B were maintained in an area in Taif 2600 m above sea level. After 2 months of housing, orbital blood samples were collected for the analysis of significant biochemical indicators of oxidative stress biomarkers of the liver and kidneys. Liver and kidney tissues from both groups were taken to examine the hepatorenal changes occurring at the biochemical, histological, immunohistochemical, and genetic levels. The results revealed substantial increases in the serum levels of liver and kidney biomarkers (GPT, GOT, urea, and creatinine) and decreases in the serum levels of antioxidant biomarkers (SOD, catalase, GSH, and NO). In parallel, the levels of the malondialdehyde (MDA) tissue damage marker and inflammatory cytokines (IL-1β, TNF-α, and IFN-γ) were increased in the high-altitude group compared to the normal sea level group. In addition, there were significant alterations in the oxidative and inflammatory status of rats that lived at high altitude, with considerable upregulation in the expression of hepatic VEGF, type 1 collagen, Cox-2, TNF-α, and iNOS as well as renal EPASI, CMYC, HIF-α, and EGLN-2 genes in the high-altitude group compared with controls housed at normal sea level. In conclusion, living at high altitude induces hepatorenal damage and biochemical and molecular alterations, all of which may serve as critical factors that must be taken into account for organisms living at high altitudes.
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Finger JW, Kelley M, Hamilton M, Zhang Y, Elsey R, Mendonca M, Kavazis AN. Changes in antioxidant enzyme levels following capture in juvenile American Alligators (Alligator mississippiensis) are tissue dependent. CAN J ZOOL 2022. [DOI: 10.1139/cjz-2021-0231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Many parameters used to investigate stress in vertebrates are temporally sensitive. The act of capture and sampling can influence them, hindering their functionality for evaluating the effects of stressors. Consequently, the investigation and subsequent incorporation of less time sensitive parameters are necessary to better evaluate stressors affecting vertebrates. In this study, we investigated how capture stress and handling associated with sampling influences antioxidant status in American Alligators (Alligator mississippiensis, Daudin, 1802; hereafter Alligator), long-lived, top-trophic carnivores found in the southeastern United States, by measuring levels of two antioxidant enzymes in destructive (brain and pancreas) and nondestructive (tail scutes) tissues: superoxide-dismutase-1 (SOD1) and glutathione peroxidase-1 (GPX1). Capture stress had no effect on pancreatic SOD1 and no effect on brain and pancreatic GPX1 (all p > 0.05). However, brain SOD1, scute SOD1, and scute GPX1 were all impacted by capture stress. These disparate results illustrate that the influence of capture stress on antioxidant enzymes in Alligators is tissue and marker dependent, necessitating further investigation. Our results provide a firm foundation to further investigate oxidative status in crocodilians.
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Affiliation(s)
- John W. Finger
- Auburn University, 1383, Department of Biological Sciences, Auburn, United States, 36849-5412
| | - Meghan Kelley
- Auburn University, 1383, Auburn, Alabama, United States
| | - Matthew Hamilton
- Purdue University, 311308, West Lafayette, Indiana, United States
| | - Yufeng Zhang
- The University of Memphis, 5415, Memphis, Tennessee, United States
| | - Ruth Elsey
- Departement of wildlife and fisheries, Louisiana, USA, 5476 Grand Chenier Highway, Grand Chenier, United States, 70643
| | - Mary Mendonca
- Auburn University, 1383, Auburn, Alabama, United States
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Hernández-Arciga U, Herrera M LG, Königsberg M, Valdez RA, Flores-Martínez JJ, Romano MC. Synergetic effects of immune challenge and stress depress cortisol, inflammatory response and antioxidant activity in fish-eating Myotis. J Exp Biol 2020; 223:jeb234914. [PMID: 33161382 DOI: 10.1242/jeb.234914] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 11/02/2020] [Indexed: 01/09/2023]
Abstract
One of the most common tools in conservation physiology is the assessment of environmental stress via glucocorticoid measurement. However, little is known of its relationship with other stress-related biomarkers, and how the incidence of an immune challenge during long-term stress could affect an individual's overall stress response. We investigated here the relationship between basal and post-acute stress fecal cortisol metabolite (FC) with different antioxidant enzymes, oxidative damage and immune parameters in the fish-eating bat, Myotis vivesi We found that in both basal and post-stress conditions, FC was highly related with a number of antioxidant enzymes and immune parameters, but not to oxidative damage. We also assessed changes of FC through the seasons. Basal FC samples and stress reactivity after short-duration stress displayed similar levels during summer, autumn and early winter, but lower concentrations in late winter. Stress reactivity after long-duration stress was greater in summer and early winter. Finally, we tested the effect of a simultaneous exposure to a long, strong stress stimulus with an immune response stimulation by administrating adrenocorticotropic hormone (ACTH) and phytohemagglutinin (PHA) after 42 h. Results showed that when both stimuli were administrated, FC concentrations, inflammation and some antioxidant activity were lowered in comparison with the control and individual administration of the challenges. Our findings support the idea that animals maintain constant basal glucocorticoid levels when living in challenging environments, but response to acute stress differs seasonally and immune defense mechanisms and stress responses might be compromised when confronted with multiple challenges.
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Affiliation(s)
- Ulalume Hernández-Arciga
- Posgrado en Ciencias Biológicas, Instituto de Biología, Universidad Nacional Autónoma de México, Apartado Postal 70-153, Ciudad de México, 04510 Mexico
- Laboratorio de Bioenergética y Envejecimiento Celular, Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana, Unidad Iztapalapa, Ciudad de México, 09340 Mexico
| | - L Gerardo Herrera M
- Estación de Biología Chamela, Instituto de Biología, Universidad Nacional Autónoma de México, Apartado Postal 21, San Patricio, JAL, 48980 Mexico
| | - Mina Königsberg
- Laboratorio de Bioenergética y Envejecimiento Celular, Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana, Unidad Iztapalapa, Ciudad de México, 09340 Mexico
| | - Ricardo A Valdez
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y Estudios Avanzados, Ciudad de México, 07360 Mexico
| | - José Juan Flores-Martínez
- Laboratorio de Sistemas de Información Geográfica, Departamento de Zoología, Instituto de Biología, Universidad Nacional Autónoma de México, Ciudad de México, 04510 Mexico
| | - Marta C Romano
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y Estudios Avanzados, Ciudad de México, 07360 Mexico
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Phillips NS, Kesler SR, Scoggins MA, Glass JO, Cheung YT, Liu W, Banerjee P, Ogg RJ, Srivastava D, Pui CH, Robison LL, Reddick WE, Hudson MM, Krull KR. Connectivity of the Cerebello-Thalamo-Cortical Pathway in Survivors of Childhood Leukemia Treated With Chemotherapy Only. JAMA Netw Open 2020; 3:e2025839. [PMID: 33216140 PMCID: PMC7679952 DOI: 10.1001/jamanetworkopen.2020.25839] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
IMPORTANCE Treatment with contemporary chemotherapy-only protocols is associated with risk for neurocognitive impairment among survivors of childhood acute lymphoblastic leukemia (ALL). OBJECTIVE To determine whether concurrent use of methotrexate and glucocorticoids is associated with interference with the antioxidant system of the brain and damage and disruption of glucocorticoid-sensitive regions of the cerebello-thalamo-cortical network. DESIGN, SETTING, AND PARTICIPANTS This cross-sectional study was conducted from December 2016 to July 2019 in a single pediatric cancer tertiary care center. Participants included survivors of childhood ALL who were more than 5 years from cancer diagnosis, age 8 years or older, and treated on an institutional chemotherapy-only protocol. Age-matched community members were recruited as a control group. Data were analyzed from August 2017 to August 2020. EXPOSURE ALL treatment using chemotherapy-only protocols. MAIN OUTCOMES AND MEASURES This study compared brain volumes between survivors and individuals in a community control group and examined associations among survivors of methotrexate and dexamethasone exposure with neurocognitive outcomes. Functional and effective connectivity measures were compared between survivors with and without cognitive impairment. The Rey-Osterrieth complex figure test, a neurocognitive evaluation in which individuals are asked to copy a figure and then draw the figure from memory, was scored according to published guidelines and transformed into age-adjusted z scores based on nationally representative reference data and used to measure organization and planning deficits. β values for neurocognitive tests represented the amount of change in cerebellar volume or chemotherapy exposure associated with 1 SD change in neurocognitive outcome by z score (mm3/1 SD in z score for cerebellum, mm3/[g×hr/L] for dexamethasone and methotrexate AUC, and mm3/intrathecal count for total intrathecal count). RESULTS Among 302 eligible individuals, 218 (72%) participated in the study and 176 (58%) had usable magnetic resonance imaging (MRI) results. Among these, 89 (51%) were female participants and the mean (range) age was 6.8 (1-18) years at diagnosis and 14.5 (8-27) years at evaluation. Of 100 community individuals recruited as the control group, 82 had usable MRI results; among these, 35 (43%) were female individuals and the mean (range) age was 13.8 (8-26) years at evaluation. There was no significant difference in total brain volume between survivors and individuals in the control group. Survivors of both sexes showed decreased mean (SD) cerebellar volumes compared with the control population (female: 70 568 [6465] mm3 vs 75 134 [6780] mm3; P < .001; male: 77 335 [6210] mm3 vs 79 020 [7420] mm3; P < .001). In female survivors, decreased cerebellar volume was associated with worse performance in Rey-Osterrieth complex figure test (left cerebellum: β = 55.54; SE = 25.55; P = .03; right cerebellum: β = 52.57; SE = 25.50; P = .04) and poorer dominant-hand motor processing speed (ie, grooved pegboard performance) (left cerebellum: β = 82.71; SE = 31.04; P = .009; right cerebellum: β = 91.06; SE = 30.72; P = .004). In female survivors, increased number of intrathecal treatments (ie, number of separate injections) was also associated with Worse Rey-Osterrieth test performance (β = -0.154; SE = 0.063; P = .02), as was increased dexamethasone exposure (β = -0.0014; SE = 0.0005; P = .01). Executive dysfunction was correlated with increased global efficiency between smaller brain regions (Pearson r = -0.24; P = .01) compared with individuals without dysfunction. Anatomical connectivity showed differences between impaired and nonimpaired survivors. Analysis of variance of effective-connectivity weights identified a significant interaction association (F = 3.99; P = .02) among the direction and strength of connectivity between the cerebellum and DLPFC, female sex, and executive dysfunction. Finally, no effective connectivity was found between the precuneus and DLPFC in female survivors with executive dysfunction. CONCLUSIONS AND RELEVANCE These findings suggest that dexamethasone exposure was associated with smaller cerebello-thalamo-cortical regions in survivors of ALL and that disruption of effective connectivity was associated with impairment of executive function in female survivors.
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Affiliation(s)
- Nicholas S. Phillips
- Department of Epidemiology and Cancer Control, St Jude Children’s Research Hospital, Memphis, Tennessee
- Department of Oncology, St Jude Children’s Research Hospital, Memphis, Tennessee
| | - Shelli R. Kesler
- Now with School of Nursing, University of Texas at Austin
- Department of Neuro-oncology, University of Texas MD Anderson Cancer Center, Houston
| | - Matthew A. Scoggins
- Department of Diagnostic Imaging, St Jude Children’s Research Hospital, Memphis, Tennessee
| | - John O. Glass
- Department of Diagnostic Imaging, St Jude Children’s Research Hospital, Memphis, Tennessee
| | - Yin Ting Cheung
- School of Pharmacy, Faculty of Medicine, Chinese University of Hong Kong, Hong Kong, China
| | - Wei Liu
- Department of Biostatistics, St Jude Children’s Research Hospital, Memphis, Tennessee
| | - Pia Banerjee
- Department of Epidemiology and Cancer Control, St Jude Children’s Research Hospital, Memphis, Tennessee
| | - Robert J. Ogg
- Department of Diagnostic Imaging, St Jude Children’s Research Hospital, Memphis, Tennessee
| | - Deokumar Srivastava
- Department of Biostatistics, St Jude Children’s Research Hospital, Memphis, Tennessee
| | - Ching-Hon Pui
- Department of Oncology, St Jude Children’s Research Hospital, Memphis, Tennessee
| | - Leslie L. Robison
- Department of Epidemiology and Cancer Control, St Jude Children’s Research Hospital, Memphis, Tennessee
| | - Wilburn E. Reddick
- Department of Diagnostic Imaging, St Jude Children’s Research Hospital, Memphis, Tennessee
| | - Melissa M. Hudson
- Department of Epidemiology and Cancer Control, St Jude Children’s Research Hospital, Memphis, Tennessee
- Department of Oncology, St Jude Children’s Research Hospital, Memphis, Tennessee
| | - Kevin R. Krull
- Department of Epidemiology and Cancer Control, St Jude Children’s Research Hospital, Memphis, Tennessee
- Department of Psychology, St Jude Children’s Research Hospital, Memphis, Tennessee
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12
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Zalachoras I, Hollis F, Ramos-Fernández E, Trovo L, Sonnay S, Geiser E, Preitner N, Steiner P, Sandi C, Morató L. Therapeutic potential of glutathione-enhancers in stress-related psychopathologies. Neurosci Biobehav Rev 2020; 114:134-155. [DOI: 10.1016/j.neubiorev.2020.03.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 03/09/2020] [Accepted: 03/12/2020] [Indexed: 12/11/2022]
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13
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Badmus OO, Olatunji LA. Dexamethasone causes defective glucose-6-phosphate dehydrogenase dependent antioxidant barrier through endoglin in pregnant and nonpregnant rats. Can J Physiol Pharmacol 2020; 98:667-677. [PMID: 32259461 DOI: 10.1139/cjpp-2018-0351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Glucocorticoid therapy has been associated with adverse cardiometabolic effects during pregnancy. Inflammation-mediated cardiac dysfunction, an independent risk factor for morbidity and mortality, has been linked to defective glucose-6-phosphate dehydrogenase (G6PD) dependent antioxidant defenses and increased endoglin expression. We therefore sought to investigate the effects of dexamethasone (DEX) on cardiac endoglin and G6PD-dependent antioxidant defense. Twenty-four rats were randomly assigned to nonpregnant (PRE(-)), DEX-exposed nonpregnant (PRE(-) + DEX), pregnant (PRE(+)), and DEX-exposed pregnant (PRE(+) + DEX) rats, respectively (n = 6 per group). PRE(-) and PRE(+) rats received vehicle (per oral (po)), while PRE(-) + DEX and PRE(+) + DEX groups were administered DEX (0.2 mg/kg po) between gestational days 14 and 19, respectively. Results showed that DEX caused increased cardiac pro-inflammatory markers (adenosine deaminase (ADA) activity, endoglin, vascular cell adhesion molecule-1 (VCAM-1), tissue injury markers (LDH, GGT, AST, ALT, and ALP), metabolic disturbances (elevated fasting plasma glucose, free fatty acid (FFA), lactate, cardiac FFA, and lactate) and depressed G6PD-dependent antioxidant defenses (G6PD activity, reduced glutathione/oxidized glutathione ratio, and nitric oxide) in pregnant and nonpregnant rats. The present study demonstrates that DEX led to increased cardiac endoglin and VCAM-1 that is accompanied by defective G6PD-dependent antioxidant defenses but not cardiac lipid accumulation in both pregnant and nonpregnant rats.
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Affiliation(s)
- Olufunto O Badmus
- HOPE Cardiometabolic Research Team and Department of Physiology, College of Health Sciences, University of Ilorin, Ilorin, Nigeria.,Department of Public Health, Kwara State University, Malete, Nigeria
| | - Lawrence A Olatunji
- HOPE Cardiometabolic Research Team and Department of Physiology, College of Health Sciences, University of Ilorin, Ilorin, Nigeria
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14
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Phillips NS, Cheung YT, Glass JO, Scoggins MA, Liu W, Ogg RJ, Mulrooney DA, Pui CH, Robison LL, Reddick WE, Hudson MM, Krull KR. Neuroanatomical abnormalities related to dexamethasone exposure in survivors of childhood acute lymphoblastic leukemia. Pediatr Blood Cancer 2020; 67:e27968. [PMID: 31407461 PMCID: PMC6980878 DOI: 10.1002/pbc.27968] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 07/09/2019] [Accepted: 07/30/2019] [Indexed: 02/03/2023]
Abstract
Survivors of childhood acute lymphoblastic leukemia (ALL) treated with chemotherapy only are at risk for neurocognitive impairment. Regions of interest were identified a priori based on glucocorticoid receptor distribution, and sex-stratified multivariable linear regression models were used to test associations between brain MRI morphology and total number of intrathecal injections, and serum concentration of dexamethasone and methotrexate. Compared with controls, ALL survivors have persistently smaller volumes in the bilateral cerebellum (P < 0.005), hippocampal subregions (P < 0.03), temporal lobe regions (P < 0.03), frontal lobe regions (P < 0.04), and parietal lobe regions (precuneus; P < 0.002). Long-term problems with learning may be related to residual posttreatment brain differences.
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Affiliation(s)
- Nicholas S. Phillips
- Department of Epidemiology and Cancer Control, St. Jude Children’s Research Hospital,Department of Oncology, St. Jude Children’s Research Hospital
| | | | - John O. Glass
- Department of Diagnostic Imaging, St. Jude Children’s Research Hospital
| | | | - Wei Liu
- Department of Biostatistics, St. Jude Children’s Research Hospital
| | - Robert J. Ogg
- Department of Diagnostic Imaging, St. Jude Children’s Research Hospital
| | - Daniel A. Mulrooney
- Department of Epidemiology and Cancer Control, St. Jude Children’s Research Hospital,Department of Oncology, St. Jude Children’s Research Hospital
| | - Ching-Hon Pui
- Department of Oncology, St. Jude Children’s Research Hospital
| | - Leslie L. Robison
- Department of Epidemiology and Cancer Control, St. Jude Children’s Research Hospital
| | | | - Melissa M. Hudson
- Department of Epidemiology and Cancer Control, St. Jude Children’s Research Hospital,Department of Oncology, St. Jude Children’s Research Hospital
| | - Kevin R. Krull
- Department of Epidemiology and Cancer Control, St. Jude Children’s Research Hospital,Department of Psychology, St. Jude Children’s Research Hospital
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15
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Moradi-Kor N, Dadkhah M, Ghanbari A, Rashidipour H, Bandegi AR, Barati M, Kokhaei P, Rashidy-Pour A. Protective Effects of Spirulina platensis, Voluntary Exercise and Environmental Interventions Against Adolescent Stress-Induced Anxiety and Depressive-Like Symptoms, Oxidative Stress and Alterations of BDNF and 5HT-3 Receptors of the Prefrontal Cortex in Female Rats. Neuropsychiatr Dis Treat 2020; 16:1777-1794. [PMID: 32801713 PMCID: PMC7387863 DOI: 10.2147/ndt.s247599] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 07/13/2020] [Indexed: 01/31/2023] Open
Abstract
BACKGROUND AND PURPOSE Ample evidence indicates that chronic adolescence stress is associated with an increased risk of developing neuropsychiatric disorders in adulthood. Given the importance of the effective therapeutic ways to overcome adolescent stress-related deficits, the present study investigated the effects of Spirulina platensis (SP), environmental enrichment (EE), and voluntary exercise (EX) and their combination on anxiety or depression-like behaviors, oxidative stress, and alterations of BDNF and 5HT-3 receptors in the prefrontal cortex (PFC) induced by adolescent stress in adult female rats. METHODS During the adolescent period (PNDs30-40), rats were subjected to restraint stress. Then, the animals were subjected to SP treatment (200 mg/kg/day), EX, EE, and the combined treatments (SP+EX, and SP+EE) for 15 days between PNDs41-55. Subsequently, anxiety or depression-like behaviors, BDNF levels, oxidative stress markers and mRNA expression of BDNF and 5HT3 in the PFC were assessed. RESULTS Stressed rats demonstrated enhanced anxiety levels and depression-like behaviors in adulthood. Regarding the oxidative stress markers, stressed rats exhibited significantly higher levels of malondialdehyde, a lipid peroxidation product, higher activities of antioxidant enzymes (glutathione peroxidase and superoxide dismutase) and significantly lower total antioxidant reactivity capacity in the PFC. Additionally, adolescent stress significantly increased 5HT3 receptor mRNA expression and decreased BDNF content and its mRNA expression in the PFC. Treatments with SP, EX, EE, and the combined interventions alleviated these deficits. CONCLUSION Our findings indicate that appropriate interventions during the adolescent period can protect against adolescent stress-induced behavioral, and biochemical defects and oxidative stress damage in adulthood.
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Affiliation(s)
- Nasroallah Moradi-Kor
- Student Research Committee, Semnan University of Medical Sciences, Semnan, Iran.,Research Center of Physiology, Semnan University of Medical Sciences, Semnan, Iran
| | - Masoomeh Dadkhah
- Pharmaceutical Sciences Research Center, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Ali Ghanbari
- Research Center of Physiology, Semnan University of Medical Sciences, Semnan, Iran
| | - Hadi Rashidipour
- School of Veterinary Medicine, Islamic Azad University, Garmsar, Iran
| | - Ahmad Reza Bandegi
- Laboratory of Endocrine Research, Research Center of Physiology, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Mehdi Barati
- Department of Immunology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Parviz Kokhaei
- Cancer Research Center, Semnan University of Medical Sciences, Semnan, Iran
| | - Ali Rashidy-Pour
- Research Center of Physiology, Semnan University of Medical Sciences, Semnan, Iran.,Department of Physiology, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
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16
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Pacholko AG, Wotton CA, Bekar LK. Poor Diet, Stress, and Inactivity Converge to Form a "Perfect Storm" That Drives Alzheimer's Disease Pathogenesis. NEURODEGENER DIS 2019; 19:60-77. [PMID: 31600762 DOI: 10.1159/000503451] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 09/17/2019] [Indexed: 11/19/2022] Open
Abstract
North American incidence of Alzheimer's disease (AD) is expected to more than double over the coming generation. Although genetic factors surrounding the production and clearance of amyloid-β and phosphorylated tau proteins are known to be responsible for a subset of early-onset AD cases, they do not explain the pathogenesis of the far more prevalent sporadic late-onset variant of the disease. It is thus likely that lifestyle and environmental factors contribute to neurodegenerative processes implicated in the pathogenesis of AD. Herein, we review evidence that (1) excess sucrose consumption induces AD-associated liver pathologies and brain insulin resistance, (2) chronic stress overdrives activity of locus coeruleus neurons, leading to loss of function (a common event in neurodegeneration), (3) high-sugar diets and stress promote the loss of neuroprotective sex hormones in men and women, and (4) Western dietary trends set the stage for a lithium-deficient state. We propose that these factors may intersect as part of a "perfect storm" to contribute to the widespread prevalence of neurodegeneration and AD. In addition, we put forth the argument that exercise and supplementation with trace lithium can counteract many of the deleterious consequences associated with excessive caloric intake and perpetual stress. We conclude that lifestyle and environmental factors likely contribute to AD pathogenesis and that simple lifestyle and dietary changes can help counteract their effects.
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Affiliation(s)
- Anthony G Pacholko
- Department of Anatomy, Physiology, and Pharmacology, College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Caitlin A Wotton
- Department of Anatomy, Physiology, and Pharmacology, College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Lane K Bekar
- Department of Anatomy, Physiology, and Pharmacology, College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada,
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17
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Stringham NT, Holmes PV, Stringham JM. Effects of macular xanthophyll supplementation on brain-derived neurotrophic factor, pro-inflammatory cytokines, and cognitive performance. Physiol Behav 2019; 211:112650. [PMID: 31425700 DOI: 10.1016/j.physbeh.2019.112650] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 08/08/2019] [Accepted: 08/12/2019] [Indexed: 12/13/2022]
Abstract
PURPOSE Oxidative and inflammatory processes play a major role in stress-induced neural atrophy. There is a wide body of literature linking oxidative and inflammatory stress with reductions in neurotrophic factors, stress resilience, and cognitive function. Based on their antioxidant and anti-inflammatory capacity, we investigated the effect of the dietary carotenoids lutein and zeaxanthin, along with the zeaxanthin isomer meso-zeaxanthin (collectively the "macular xanthophylls" [MXans]) on systemic brain-derived neurotrophic factor (BDNF) and anti-oxidant capacity (AOC), and the pro-inflammatory cytokines TNF-α, IL-6, and IL-1β. To investigate higher-order effects, we assessed cognitive performance. METHODS 59 young (18-25 yrs.), healthy subjects participated in a 6-month, double-blind, placebo-controlled trial to evaluate the effects of MXan supplementation on the aforementioned serum parameters and cognitive performance. Subjects were randomly assigned to one of three groups: placebo, 13 mg, or 27 mg/day total MXans; all measures were taken at baseline and 6 months. Blood was obtained via fasting blood draw, and MXan concentration in the retina (termed macular pigment optical density [MPOD]) was measured via customized heterochromatic flicker photometry. Serum BDNF and cytokines were assessed via ELISA. Serum antioxidant capacity (AOC) and serum MXan concentrations were quantified via colorimetric microplate assay, and high-performance liquid chromatography, respectively. Cognitive performance was measured via a computer-based assessment tool (CNS Vital Signs). RESULTS BDNF, MPOD, serum MXans, and AOC all increased significantly versus placebo in both treatment groups over the 6-month study period (p < .05 for all). IL-1β decreased significantly versus placebo in both treatment groups (p = .0036 and p = .006, respectively). For cognitive measures, scores for composite memory, verbal memory, sustained attention, psychomotor speed, and processing speed all improved significantly in treatment groups (p < .05 for all) and remained unchanged in the placebo group. Several measures were found to be significantly associated in terms of relational changes over the course of the study. Notably, change in BDNF was related to change in IL-1β (r = -0.47; p < .001) and MPOD (r = 0.44; p = .0086). Additionally, changes in serum MXans were strongly related to AOC (r = 0.79 & 0.61 for lutein and zeaxanthin isomers respectively; p < .001). For cognitive scores, change in BDNF was correlated to change in composite memory (r = 0.32; p = .014) and verbal memory (r = 0.35; p = .007), whereas change in MPOD was correlated with change in both psychomotor speed (r = 0.38; p = .003), and processing speed (r = 0.35; p = .007). Change in serum lutein was found to be significantly correlated to change in verbal memory (r = 0.41; p < .001), composite memory (r = 0.31; p = .009), and sustained attention (r = 0.28; p = .036). Change in serum zeaxanthin isomers was significantly correlated with change in verbal memory (r = 0.33; p = .017). Lastly, change in AOC was significantly associated with verbal memory (r = 0.34; p = .021), composite memory (r = 0.29; p = .03), and sustained attention (r = 0.35; p = .016). No significant relational changes in any cognitive parameter were found for the placebo group. CONCLUSIONS Six months of daily supplementation with at least 13 mg of MXans significantly reduces serum IL-1β, significantly increases serum MXans, BDNF, MPOD, and AOC, and improves several parameters of cognitive performance. Findings suggest that increased systemic antioxidant/anti-inflammatory capacity (and not necessarily deposition of the carotenoids in neural tissues), may explain many of the effects determined in this study. The significant relationship between change in BDNF and IL-1β over the course of the study suggests that regular consumption of MXans interrupts the inflammatory cascade that can lead to reduction of BDNF. Changes in MPOD and BDNF appear to account for enhancement in cognitive parameters that involve speed of processing and complex processing, respectively. ISRCTN Clinical Trial Registration: ISRCTN16156382.
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Affiliation(s)
- Nicole T Stringham
- Interdisciplinary Neuroscience Program-Biomedical and Health Sciences Institute, University of Georgia, Athens, GA 30602, United States of America; Department of Psychology, University of Georgia, Athens, GA 30602, United States of America.
| | - Philip V Holmes
- Interdisciplinary Neuroscience Program-Biomedical and Health Sciences Institute, University of Georgia, Athens, GA 30602, United States of America; Department of Psychology, University of Georgia, Athens, GA 30602, United States of America.
| | - James M Stringham
- Visual Performance Laboratory, Duke Eye Center, Durham, NC 27705, United States of America.
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18
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Akbari-Fakhrabadi M, Najafi M, Mortazavian S, Rasouli M, Memari AH, Shidfar F. Effect of saffron (Crocus sativus L.) and endurance training on mitochondrial biogenesis, endurance capacity, inflammation, antioxidant, and metabolic biomarkers in Wistar rats. J Food Biochem 2019; 43:e12946. [PMID: 31368566 DOI: 10.1111/jfbc.12946] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 05/12/2019] [Accepted: 05/23/2019] [Indexed: 01/10/2023]
Abstract
We aimed to evaluate the effect of saffron (Crocus Sativus L.) treatment on endurance capacity, mitochondrial biogenesis, inflammation, antioxidant, and metabolic biomarkers in Wistar rats. Forty male rats were allocated equally into four groups: Saffron, Exercise and Saffron, Exercise and Placebo, and Placebo. Endurance training was accomplished on a specified rodent motor-driven treadmill. Running to fatigue test and also metabolic and molecular indices were measured after eight weeks of intervention. mtDNA copy number and NRF-1 gene expression increased significantly in the Ex + S group compared to the exercised and control group (p < 0.05). Endurance capacity time increased in the Ex + S group compared to the Ex group (p < 0.05). Malondialdehyde, CPK, AST, and IL-6 decreased and antioxidant parameters including Glutathione peroxidase and Glutathione increased in the Ex + S group compared to exercised rats (p < 0.01). Saffron enhanced mitochondrial biogenesis, decreased oxidative stress, inflammation, and modulated metabolic biomarkers in exercised rats. PRACTICAL APPLICATIONS: The influence of potential nutrient factors on exercise performance has reached much attention in recent years. Athletes require an appropriate sport supplement to reimburse their fatigue and improve their resilience. Saffron (Crocus Sativus L.) is a well-known spice in the food trade which is quite popular around the world by giving a desirable taste to food. In an experimental study, we showed that saffron extract treatment during endurance training could improve endurance capacity by modulating several metabolic and genomic factors. Therefore, by relying on the results of this study and the positive effects of saffron published in previous studies, saffron could be added to sport beverages and supplements to enhance an athlete's performance.
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Affiliation(s)
- Maryam Akbari-Fakhrabadi
- Department of Nutrition, School of Public Health, International Campus, Iran University of Medical Sciences, Tehran, Iran
| | - Mohammad Najafi
- Department of Biochemistry, School of Medical Sciences, Iran University of Medical Sciences, Tehran, Iran
| | - Soudabehsadat Mortazavian
- Sports Medicine Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahboobeh Rasouli
- Department of Biostatistics, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Amir-Hossein Memari
- Sports Medicine Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Farzad Shidfar
- Department of Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
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19
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Camilleri C, Beiter RM, Puentes L, Aracena-Sherck P, Sammut S. Biological, Behavioral and Physiological Consequences of Drug-Induced Pregnancy Termination at First-Trimester Human Equivalent in an Animal Model. Front Neurosci 2019; 13:544. [PMID: 31191234 PMCID: PMC6549702 DOI: 10.3389/fnins.2019.00544] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 05/13/2019] [Indexed: 12/31/2022] Open
Abstract
Given the significant physiological changes that take place during and resulting from pregnancy, as well as the relative absence of such information in relation to pregnancy termination, this study investigated the potential for developing a valid animal model to objectively assess the biological, physiological and behavioral consequences of drug-induced pregnancy termination. Female Long-Evans rats were divided into four groups (n = 19-21/group), controlling for drug [mifepristone (50 mg/kg/3 ml, i.g.)/misoprostol (0.3 mg/kg/ml, i.g.) or vehicle (1% Carboxymethylcellulose Sodium/0.2% Tween® 80 suspension, i.g.)] and pregnancy. Drug administration took place on days 12-14 of gestation (days 28-40 human gestational equivalent). Vehicle was administered to the controls on the same days. Parameters measured included rat body weight, food intake, vaginal impedance, sucrose consumption/preference, locomotor activity, forced swim test, and home-cage activity. At the termination of the study, rats were deeply anesthetized using urethane, and blood, brain, and liver were collected for biochemical analysis. Following drug/vehicle administration, only the pregnancy termination group (pregnant, drug) displayed a significant decrease in body weight, food intake, locomotor activity-related behaviors and home-cage activity relative to the control group (non-pregnant, vehicle). Additionally, the pregnancy termination group was the only group that displayed a significant reduction in sucrose consumption/preference during Treatment Week relative to Pre-Treatment Week. Vaginal impedance did not significantly decrease over time in parous rats in contrast to all other groups, including the rats in the pregnancy termination group. Biochemical analysis indicated putative drug- and pregnancy-specific influences on oxidative balance. Regression analysis indicated that pregnancy termination was a predictor variable for body weight, food intake and all locomotor activity parameters measured. Moreover, pertaining to body weight and food intake, the pregnancy termination group displayed significant changes, which were not present in a group of naturally miscarrying rats following pregnancy loss. Overall, our results appear to suggest negative biological and behavioral effects following pregnancy termination, that appear to also be distinct from natural miscarriage, and potential benefits of parity pertaining to fecundity. Thus, our findings indicate the importance for further objective investigation of the physiological and behavioral consequences of medical abortion, in order to provide further insight into the potential implications in humans.
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Affiliation(s)
- Christina Camilleri
- Department of Psychology, Franciscan University of Steubenville, Steubenville, OH, United States
| | - Rebecca M. Beiter
- Department of Psychology, Franciscan University of Steubenville, Steubenville, OH, United States
| | - Lisett Puentes
- School of Medicine, Universidad San Sebastián, Conceptión, Chile
| | | | - Stephen Sammut
- Department of Psychology, Franciscan University of Steubenville, Steubenville, OH, United States
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20
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Kovačević S, Nestorov J, Matić G, Elaković I. Chronic Stress Combined with a Fructose Diet Reduces Hypothalamic Insulin Signaling and Antioxidative Defense in Female Rats. Neuroendocrinology 2019; 108:278-290. [PMID: 30572328 DOI: 10.1159/000496391] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 12/19/2018] [Indexed: 11/19/2022]
Abstract
BACKGROUND Increased fructose consumption and chronic exposure to stress have been associated with the development of obesity and insulin resistance. In the hypothalamus, a crossroad of stress responses and energy balance, insulin and glucocorticoids regulate the expression of orexigenic neuropeptides, neuropeptide Y (NPY) and agouti-related protein (AgRP), and anorexigenic neuropeptides, proopio-melanocortin (POMC) and cocaine- and amphetamine-regulated transcript (CART). OBJECTIVES We investigated whether chronic stress and fructose diet disrupt these hormonal signaling pathways and appetite control in the hypothalamus, contributing to the development of insulin resistance and obesity. Potential roles of hypothalamic inflammation and oxidative stress in the development of insulin resistance were also analyzed. METHODS Insulin, glucocorticoid, and leptin signaling, expression of orexigenic and anorexigenic neuropeptides, and antioxidative and inflammatory statuses in the whole hypothalamus of fructose-fed female rats exposed to unpredictable stress for 9 weeks were analyzed using quantitative PCR and Western blotting. RESULTS Chronic stress combined with a fructose-enriched diet reduced protein content and stimulatory phosphorylation of Akt kinase, and elevated 11β-hydroxysteroid dehydrogenase 1 and glucocorticoid receptor expression, while alterations in appetite regulation (NPY, AgRP, POMC, CART, leptin receptor, and SOCS3 expression) were not observed. The expression of antioxidative defense enzymes (mitochondrial manganese superoxide dismutase 2, glutathione reductase, and catalase) and proinflammatory cytokines (IL-1β, IL-6, and TNFα) was reduced. CONCLUSIONS Our results underline the combination of long-term stress exposure and fructose overconsumption as more detrimental for hypothalamic function than for either of the factors separately, as it enhanced glucocorticoid and impaired insulin signaling, antioxidative -defense, and inflammatory responses of this homeostasis- regulating center.
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Affiliation(s)
- Sanja Kovačević
- Department of Biochemistry, Institute for Biological Research Siniša Stanković, University of Belgrade, Belgrade, Serbia
| | - Jelena Nestorov
- Department of Biochemistry, Institute for Biological Research Siniša Stanković, University of Belgrade, Belgrade, Serbia
| | - Gordana Matić
- Department of Biochemistry, Institute for Biological Research Siniša Stanković, University of Belgrade, Belgrade, Serbia
| | - Ivana Elaković
- Department of Biochemistry, Institute for Biological Research Siniša Stanković, University of Belgrade, Belgrade, Serbia,
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21
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Choudhary P, Pacholko AG, Palaschuk J, Bekar LK. The locus coeruleus neurotoxin, DSP4, and/or a high sugar diet induce behavioral and biochemical alterations in wild-type mice consistent with Alzheimers related pathology. Metab Brain Dis 2018; 33:1563-1571. [PMID: 29862455 DOI: 10.1007/s11011-018-0263-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Accepted: 05/30/2018] [Indexed: 12/28/2022]
Abstract
Alzheimer's disease (AD) is the sixth leading cause of death in the United States where it is estimated that one in three seniors dies with AD or another dementia. Are modern lifestyle habits a contributing factor? Increased carbohydrate (sugar) consumption, stress and disruption of sleep patterns are quickly becoming the norm rather than the exception. Interestingly, seven months on a non-invasive high sucrose diet (20% sucrose in drinking water) has been shown to induce behavioral, metabolic and pathological changes consistent with AD in wild-type mice. As chronic stress and depression are associated with loss of locus coeruleus (LC) noradrenergic neurons and projections (source of anti-inflammatory and trophic factor control), we assessed the ability for a selective LC neurotoxin (DSP4) to accelerate and aggravate a high-sucrose mediated AD-related phenotype in wild-type mice. Male C57/Bl6 mice were divided into four groups: 1) saline injected, 2) DSP4 injected, 3) high sucrose drinking water (20%) or 4) DSP4 injected and high sucrose drinking water. We demonstrate that high sucrose consumption and DSP4 treatment promote an early-stage AD-related phenotype after only 3-4 months, as evidenced by elevated fecal corticosterone, increased despair, spatial memory deficits, increased AChE activity, elevated NO production, decreased pGSK3β and increased pTau. Combined treatment appears to accelerate and aggravate pathological processes consistent with Alzheimer disease and dementia. Developing a simple model in wild-type mice will highlight environmental and lifestyle factors that need to be addressed to slow, prevent or even reverse the rising trend in dementia patient numbers and cost.
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Affiliation(s)
- Pooja Choudhary
- Department of Pharmacology, College of Medicine, University of Saskatchewan, Saskatoon, SK, S7N 5E5, Canada
| | - Anthony G Pacholko
- Department of Pharmacology, College of Medicine, University of Saskatchewan, Saskatoon, SK, S7N 5E5, Canada
| | - Josh Palaschuk
- Department of Pharmacology, College of Medicine, University of Saskatchewan, Saskatoon, SK, S7N 5E5, Canada
| | - Lane K Bekar
- Department of Pharmacology, College of Medicine, University of Saskatchewan, Saskatoon, SK, S7N 5E5, Canada.
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22
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Nawaz A, Batool Z, Shazad S, Rafiq S, Afzal A, Haider S. Physical enrichment enhances memory function by regulating stress hormone and brain acetylcholinesterase activity in rats exposed to restraint stress. Life Sci 2018; 207:42-49. [PMID: 29852186 DOI: 10.1016/j.lfs.2018.05.049] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Revised: 05/21/2018] [Accepted: 05/27/2018] [Indexed: 01/11/2023]
Abstract
To study the effects of stress on mental health activity is of great importance in neuropsychological studies as it may affect the lifelong performance related to brain and overall health and wellbeing of an individual. It is observed very often that exposure to stress during early life can alter the brain function which may reflect as cognitive disability. Impairment of memory is associated with increased oxidative stress which is due to enhanced production of free radicals that may lead to lipid peroxidation and disintegration of cell structure and functions. Exposure to enriched environment has shown to enhance spatial learning and memory, although the underlying mechanism covering the regulation of antioxidant capacity is limited. Here we investigated short and long term memory using Morris water maze before and after giving restraint stress procedure in rats exposed to social and physically enriched environment. Levels of malondialdehyde (MDA), activity of superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), and acetylcholinesterase (AChE) in brain tissue were estimated. Plasma corticosterone was also determined after decapitation. Results demonstrated that rats pre-exposed to physical along with social enrichment showed improved short and long term memory as compared to control group. However, restraint stress exerted differential effects in socially and physically enriched groups. Reduced lipid peroxidation and decreased activity of SOD, GPx and AChE were observed in physically enriched rats subjected to stress as compared to stressed rats kept in social environment. Levels of corticosterone were also found to be significantly reduced in rats kept in physically enriched environment. This study shows the beneficial effects of environmental enrichment on learning and spatial memory by reducing oxidative stress via reducing lipid peroxidation and regulation of antioxidant enzymes in rats.
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Affiliation(s)
- Amber Nawaz
- Neurochemistry and Biochemical Neuropharmacology Research Unit, Department of Biochemistry, University of Karachi, Karachi 75270, Pakistan; Department of Biomedical Engineering, Sir Syed University of Engineering and Technology, Karachi 75300, Pakistan
| | - Zehra Batool
- Neurochemistry and Biochemical Neuropharmacology Research Unit, Department of Biochemistry, University of Karachi, Karachi 75270, Pakistan; Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Sidrah Shazad
- Neurochemistry and Biochemical Neuropharmacology Research Unit, Department of Biochemistry, University of Karachi, Karachi 75270, Pakistan
| | - Sahar Rafiq
- Neurochemistry and Biochemical Neuropharmacology Research Unit, Department of Biochemistry, University of Karachi, Karachi 75270, Pakistan
| | - Asia Afzal
- Neurochemistry and Biochemical Neuropharmacology Research Unit, Department of Biochemistry, University of Karachi, Karachi 75270, Pakistan
| | - Saida Haider
- Neurochemistry and Biochemical Neuropharmacology Research Unit, Department of Biochemistry, University of Karachi, Karachi 75270, Pakistan.
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23
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Schoormans D, Verhoeven JE, Denollet J, van de Poll-Franse L, Penninx BWJH. Leukocyte telomere length and personality: associations with the Big Five and Type D personality traits. Psychol Med 2018; 48:1008-1019. [PMID: 28889809 PMCID: PMC5851042 DOI: 10.1017/s0033291717002471] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2017] [Revised: 07/21/2017] [Accepted: 08/01/2017] [Indexed: 11/23/2022]
Abstract
UNLABELLED Backgrounds Accelerated cellular ageing, which can be examined by telomere length (TL), may be an overarching mechanism underlying the association between personality and adverse health outcomes. This 6-year longitudinal study examined the relation between personality and leukocyte telomere length (LTL) across time among adults with a wide age-range. METHODS Data from the Netherlands Study of Depression and Anxiety were used and included patients with a depression and/or anxiety disorder and healthy controls. Overall, 2936 persons (18-65 years, 66% female) had data on LTL at baseline and 1883 persons had LTL at 6-year follow-up. The Big Five personality traits (neuroticism, extraversion, openness to experience, agreeableness, and conscientiousness) and Type D personality were assessed. RESULTS Neuroticism was negatively (B = -2.11, p = 0.03) and agreeableness was positively (B = 3.84, p = 0.03) related to LTL measured across two time points, which became just non-significant after adjusting for somatic health, lifestyle factors, and recent life stress (B = -1.99, p = 0.06; and B = 3.01, p = 0.10). Type D personality was negatively (B = -50.16, p < 0.01) related to LTL across two time points, which still remained statistically significant after full adjustment (B = -47.37, p = 0.01). Associations did not differ by age, gender, and current psychiatric status. CONCLUSIONS The Big Five traits high neuroticism and low agreeableness, and Type D personality were associated with shorter LTL measured across a 6-year period. Associations with the Big Five traits became non-significant after controlling for somatic health, lifestyle factors, and recent life stress, yet similar trends were observed. Type D personality remained independently associated with shorter LTL after full adjustment.
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Affiliation(s)
- D. Schoormans
- Department of Medical and Clinical
psychology, CoRPS – Center of Research on Psychology in Somatic
diseases, Tilburg University,
Tilburg, The Netherlands
- Department of Psychiatry VU University Medical
Center, Amsterdam Public Health Research Institute,
Amsterdam, The Netherlands
| | - J. E. Verhoeven
- Department of Psychiatry VU University Medical
Center, Amsterdam Public Health Research Institute,
Amsterdam, The Netherlands
| | - J. Denollet
- Department of Medical and Clinical
psychology, CoRPS – Center of Research on Psychology in Somatic
diseases, Tilburg University,
Tilburg, The Netherlands
| | - L. van de Poll-Franse
- Department of Medical and Clinical
psychology, CoRPS – Center of Research on Psychology in Somatic
diseases, Tilburg University,
Tilburg, The Netherlands
- Netherlands Comprehensive Cancer Organization
(IKNL), Utrecht, The Netherlands
- Department of Psychosocial Research and
Epidemiology, The Netherlands Cancer Institute,
Amsterdam, The Netherlands
| | - B. W. J. H. Penninx
- Department of Psychiatry VU University Medical
Center, Amsterdam Public Health Research Institute,
Amsterdam, The Netherlands
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24
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Beytut E, Yilmaz S, Aksakal M, Polat S. The possible protective effects of vitamin E and selenium administration in oxidative stress caused by high doses of glucocorticoid administration in the brain of rats. J Trace Elem Med Biol 2018; 45:131-135. [PMID: 29173469 DOI: 10.1016/j.jtemb.2017.10.005] [Citation(s) in RCA: 21] [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: 04/19/2017] [Revised: 06/22/2017] [Accepted: 10/11/2017] [Indexed: 11/17/2022]
Abstract
Acute exposure to high doses of glucocorticoids (GCs) may potentially increase the basal levels of reactive oxygen species (ROS) by altering the defence capacity against oxidative damage. Also, antioxidants may affect the oxidative breakdown of tissues. Therefore, the aim of this work was to determine the effects of dietary intake vitamin E and selenium (Se) on lipid peroxidation (LPO) as thiobarbituric acid reactive substances (TBARS) and on the antioxidative defence mechanisms in the brain of rats treated with high doses of prednisolone. Two hundred and fifty adult male Wistar rats were randomly divided into five groups. The rats were fed a normal diet, but groups 3, 4, and 5 received a daily supplement in their drinking water of 20mg vitamin E, 0.3mg Se, and a combination of vitamin E and Se, respectively, for 30days. For 3days subsequently, the control (group 1) was treated with a placebo, and the remaining 4 groups were injected intramuscularly with 100mg/kg body weight (bw) prednisolone. After the last administration of prednisolone, 10 rats from each group were killed at 4, 8, 12, 24, and 48h and the activities of enzymes selenium-glutathione peroxidase (Se-GSH-Px) and catalase (CAT), and the levels of reduced glutathione (reduced GSH) and TBARS in their brains were measured. Se-GSH-Px and CAT enzyme activities, and reduced GSH levels in the prednisolone treatment group (group 2) began to decrease gradually at 4h (p<0.01, p<0.05, respectively), falling respectively to 60, 50, and 40% of the control levels by 24h (p<0.001, p<0.01), and recovering to the control levels at 48h. In contrast, prednisolone administration caused an increase in the brain TBARS, reaching up to six times the level of the control at 24h (p<0.001). However, supplementation with vitamin E and Se had a preventive effect on the elevation of the brain TBARS and improved the diminished activities of antioxidative enzymes and the levels of reduced GSH. Therefore, the present study attempts to determine the sequence of cellular membrane damage in the brain of the rats after high doses GC administration and the possible roles in vivo of vitamin E and Se, and their combination.
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Affiliation(s)
- Ebru Beytut
- Department of Medical Physiology, Faculty of Medicine, University of Erzincan, Erzincan, TURKEY
| | - Seval Yilmaz
- Department of Biochemistry, Faculty of Veterinary Medicine, University of Firat, Elazıg, TURKEY
| | - Mesut Aksakal
- Department of Physiology, Faculty of Veterinary Medicine, University of Firat, Elazıg, TURKEY
| | - Seher Polat
- Department of Medical Genetics, Faculty of Medicine, University of Erzincan, Erzincan, TURKEY.
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25
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Womersley JS, Seedat S, Hemmings SMJ. Childhood maltreatment and HIV-associated neurocognitive disorders share similar pathophysiology: a potential sensitisation mechanism? Metab Brain Dis 2017; 32:1717-1733. [PMID: 28681198 DOI: 10.1007/s11011-017-0062-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 06/22/2017] [Indexed: 01/16/2023]
Abstract
HIV-associated neurocognitive disorders (HAND) are increasingly prevalent despite the use of antiretroviral therapies. Previous research suggests that individual host factors play an important role in determining susceptibility to HAND. In this review, we propose that childhood trauma (CT) and HAND share several common aetiological mechanisms, namely hypothalamic-pituitary-adrenal axis dysregulation, neuroinflammation and oxidative stress. These convergent and consequent mechanisms may translate into an increased risk of developing HAND in individuals who have experienced early life stress. We provide an overview of basic and clinical research relating to these pathophysiological mechanisms and suggest that further research examine brain-derived neurotrophic factor and telomere length as common mediating factors and potential therapeutic targets for HAND and CT. Graphical abstract Both childhood trauma and HIV-associated neurocognitive disorders are associated with HPA axis dysregulation, inflammation and oxidative stress.
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Affiliation(s)
- Jacqueline S Womersley
- Department of Psychiatry, Faculty of Medicine and Health Sciences, Stellenbosch University, Francie van Zijl Drive, Tygerberg, 7505, South Africa
| | - Soraya Seedat
- Department of Psychiatry, Faculty of Medicine and Health Sciences, Stellenbosch University, Francie van Zijl Drive, Tygerberg, 7505, South Africa
| | - Sian M J Hemmings
- Department of Psychiatry, Faculty of Medicine and Health Sciences, Stellenbosch University, Francie van Zijl Drive, Tygerberg, 7505, South Africa.
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26
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Oliveira TDQ, de Sousa CNS, Vasconcelos GS, de Sousa LC, de Oliveira AA, Patrocínio CFV, Medeiros IDS, Honório Júnior JER, Maes M, Macedo D, Vasconcelos SMM. Brain antioxidant effect of mirtazapine and reversal of sedation by its combination with alpha-lipoic acid in a model of depression induced by corticosterone. J Affect Disord 2017; 219:49-57. [PMID: 28521187 DOI: 10.1016/j.jad.2017.05.022] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 05/06/2017] [Indexed: 12/24/2022]
Abstract
BACKGROUND Depression is accompanied by activated neuro-oxidative and neuro-nitrosative pathways, while targeting these pathways has clinical efficacy in depression. This study aimed to investigate the effects of mirtazapine (MIRT) alone and combined with alpha-lipoic acid (ALA) against corticosterone (CORT) induced behavioral and oxidative alterations. METHODS Male mice received vehicle or CORT 20mg/kg during 14 days. From the 15th to 21st days they were divided in groups administered: vehicle, MIRT 3mg/kg or the combinations MIRT+ALA100 or MIRT+ALA200. On the 21st day of treatment, the animals were subjected to behavioral tests. Twenty-four hours after the last drug administration hippocampus (HC) and striatum (ST) were dissected for the determination reduced glutathione (GSH), lipid peroxidation (LP) and nitrite levels. RESULTS CORT induced anxiety- and depressive-like behaviors as observed by increased immobility time in the tail suspension test and decreased sucrose consumption. MIRT or MIRT+ALA are effective in reversing anxiety- and depressive-like behaviors induced by CORT. CORT and MIRT alone prolonged sleeping time and this effect was reversed by MIRT+ALA. CORT significantly increased LP, which was reversed by MIRT or MIRT+ALA. Nitrite levels were increased in CORT-treated animals and reversed by MIRT+ALA200 (HC), MIRT or MIRT+ALA (ST). LIMITATION A relative small sample size and lack of a washout period between drug administration and behavioral testing. CONCLUSIONS MIRT or MIRT+ALA reverse CORT-induced anxiety- and depressive-like behaviors probably via their central antioxidant effects. Augmentation of MIRT with ALA may reverse sedation, an important side effect of MIRT. Randomized controlled studies are needed to examine the clinical efficacy of this combination in human depression.
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Affiliation(s)
- Tatiana de Queiroz Oliveira
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Universidade Federal do Ceará, Fortaleza, Ceará, Brazil
| | - Caren Nádia Soares de Sousa
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Universidade Federal do Ceará, Fortaleza, Ceará, Brazil
| | - Germana Silva Vasconcelos
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Universidade Federal do Ceará, Fortaleza, Ceará, Brazil
| | - Luciene Costa de Sousa
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Universidade Federal do Ceará, Fortaleza, Ceará, Brazil
| | - Anneheydi Araújo de Oliveira
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Universidade Federal do Ceará, Fortaleza, Ceará, Brazil
| | | | - Ingridy da Silva Medeiros
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Universidade Federal do Ceará, Fortaleza, Ceará, Brazil
| | | | - Michael Maes
- IMPACT Strategic Research Center, Deakin University, Geelong, Australia; Department of Psychiatry, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Danielle Macedo
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Universidade Federal do Ceará, Fortaleza, Ceará, Brazil; National Institute for Translational Medicine (INCT-TM, CNPq), Brazil
| | - Silvânia Maria Mendes Vasconcelos
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Universidade Federal do Ceará, Fortaleza, Ceará, Brazil.
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27
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Fomenko EV, Bobyntsev II, Kryukov AA, Ivanov AV, Andreeva LA, Myasoedov NF. Effect of Selank on Functional State of Rat Hepatocytes under Conditions of Restraint Stress. Bull Exp Biol Med 2017; 163:415-418. [PMID: 28853100 DOI: 10.1007/s10517-017-3817-8] [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: 10/27/2016] [Indexed: 11/25/2022]
Abstract
We studied the effect of Selank administered intraperitoneally in doses of 100, 300, and 1000 μg/kg to male Wistar rats 15 min prior to restraint stress on the content of aminotransferases and total protein concentration in blood serum and intensity of free radical oxidation in the liver. Under conditions of acute restraint stress, Selank in doses of 100 and 300 μg/kg decreased catalase and superoxide dismutase activities and malondialdehyde concentration and increased total antioxidant activity in the liver homogenate. Administration of Selank in a dose of 1000 μg/kg reduced the content of aminotransferases in blood serum, decreased superoxide dismutase activity in the liver, and increased total antioxidant activity. Under conditions of chronic stress, Selank in all doses produced similar effects: reduced superoxide dismutase activity and malondialdehyde concentration in the liver tissue and AST activity in the serum. The other parameters remained unchanged.
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Affiliation(s)
- E V Fomenko
- Department of Histology, Embryology and Cytology, Kursk, Russia
| | - I I Bobyntsev
- Department of Histology, Embryology and Cytology, Kursk, Russia.
- Department of Physiology, Research Institute of General Pathology, Kursk State Medical University, Kursk, Russia.
| | - A A Kryukov
- Department of Physiology, Research Institute of General Pathology, Kursk State Medical University, Kursk, Russia
| | - A V Ivanov
- Department of Histology, Embryology and Cytology, Kursk, Russia
| | - L A Andreeva
- Department of Chemistry of Physiologically Active Compounds, Institute of Molecular Genetics, Russian Academy of Science, Moscow, Russia
| | - N F Myasoedov
- Department of Chemistry of Physiologically Active Compounds, Institute of Molecular Genetics, Russian Academy of Science, Moscow, Russia
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28
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Maluach AM, Misquitta KA, Prevot TD, Fee C, Sibille E, Banasr M, Andreazza AC. Increased Neuronal DNA/RNA Oxidation in the Frontal Cortex of Mice Subjected to Unpredictable Chronic Mild Stress. CHRONIC STRESS 2017; 1. [PMID: 29250610 PMCID: PMC5730347 DOI: 10.1177/2470547017724744] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Background Chronic stress is implicated in the development of various psychiatric
illnesses including major depressive disorder. Previous reports suggest that
patients with major depressive disorder have increased levels of oxidative
stress, including higher levels of DNA/RNA oxidation found in postmortem
studies, especially within brain regions responsible for the cognitive and
emotional processes disrupted in the disorder. Here, we aimed to investigate
whether unpredictable chronic mild stress in mice induces neuronal DNA/RNA
oxidation in the prelimbic, infralimbic, and cingulate cortices of the
frontal cortex and the basolateral amygdala and to explore potential
associations with depressive-like behaviors. We expected that animals
subjected to unpredictable chronic mild stress will present higher levels of
DNA/RNA oxidation, which will be associated with anxiety-/depressive-like
behaviors. Methods C57BL/6J mice were assigned to unpredictable chronic mild stress or nonstress
conditions (n = 10/group, 50% females). Following five weeks of
unpredictable chronic mild stress exposure, mice were tested in a series of
behavioral tests measuring anxiety- and depressive-like behaviors. Frontal
cortex and amygdala sections were then immunolabeled for neuronal nuclei, a
marker of post-mitotic neurons and
anti-8-hydroxy-2-deoxyguanosine/8-oxo-7,8-dihydroguanosine, which reflects
both DNA and RNA oxidation. Results Levels of neuronal DNA/RNA oxidation were increased in the frontal cortex of
mice subjected to unpredictable chronic mild stress (p = 0.0207). Levels of neuronal DNA/RNA oxidation in the
frontal cortex were positively correlated with z-emotionality scores for
latency to feed in the novelty-suppressed feeding test (p = 0.0031). Statistically significant differences were not
detected in basolateral amygdala levels of neuronal DNA/RNA oxidation
between nonstress- and unpredictable chronic mild stress-exposed mice, nor
were correlations found with behavioral performances for this region. Conclusion Our results demonstrate that unpredictable chronic mild stress induces a
significant increase in neuronal DNA/RNA oxidation in the frontal cortex
that correlate with behavioral readouts of the stress response. A lack of
DNA/RNA oxidation alterations in the basolateral amygdala suggests greater
vulnerability of frontal cortex neurons to DNA/RNA oxidation in response to
unpredictable chronic mild stress. These findings add support to the
hypothesis that chronic stress-induced damage to DNA/RNA may be an
additional molecular mechanism underlying cellular dysfunctions associated
with chronic stress and present in stress-related disorders.
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Affiliation(s)
- Alfred M Maluach
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, Canada
| | - Keith A Misquitta
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, Canada.,Department of Psychiatry, University of Toronto, Toronto, Canada.,Campbell Family Mental Health Research Institute of CAMH, Toronto, Ontario, Canada
| | - Thomas D Prevot
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, Canada.,Department of Psychiatry, University of Toronto, Toronto, Canada
| | - Corey Fee
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, Canada.,Department of Psychiatry, University of Toronto, Toronto, Canada.,Campbell Family Mental Health Research Institute of CAMH, Toronto, Ontario, Canada
| | - Etienne Sibille
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, Canada.,Department of Psychiatry, University of Toronto, Toronto, Canada.,Campbell Family Mental Health Research Institute of CAMH, Toronto, Ontario, Canada
| | - Mounira Banasr
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, Canada.,Department of Psychiatry, University of Toronto, Toronto, Canada.,Campbell Family Mental Health Research Institute of CAMH, Toronto, Ontario, Canada
| | - Ana C Andreazza
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, Canada.,Department of Psychiatry, University of Toronto, Toronto, Canada.,Campbell Family Mental Health Research Institute of CAMH, Toronto, Ontario, Canada
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29
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Stringham NT, Holmes PV, Stringham JM. Supplementation with macular carotenoids reduces psychological stress, serum cortisol, and sub-optimal symptoms of physical and emotional health in young adults. Nutr Neurosci 2017; 21:286-296. [PMID: 28198205 DOI: 10.1080/1028415x.2017.1286445] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
PURPOSE Oxidative stress and systemic inflammation are the root cause of several deleterious effects of chronic psychological stress. We hypothesize that the antioxidant and anti-inflammatory capabilities of the macular carotenoids (MCs) lutein, zeaxanthin, and meso-zeaxanthin could, via daily supplementation, provide a dietary means of benefit. METHODS A total of 59 young healthy subjects participated in a 12-month, double-blind, placebo-controlled trial to evaluate the effects of MC supplementation on blood cortisol, psychological stress ratings, behavioural measures of mood, and symptoms of sub-optimal health. Subjects were randomly assigned to one of three groups: placebo, 13 mg, or 27 mg / day total MCs. All parameters were assessed at baseline, 6 months, and 12 months. Serum MCs were determined via HPLC, serum cortisol via ELISA, and macular pigment optical density (MPOD) via customized heterochromatic flicker photometry. Behavioural data were obtained via questionnaire. RESULTS Significant baseline correlations were found between MPOD and Beck anxiety scores (r = -0.28; P = 0.032), MPOD and Brief Symptom Inventory scores (r = 0.27; P = 0.037), and serum cortisol and psychological stress scores (r = 0.46; P < 0.001). Supplementation for 6 months improved psychological stress, serum cortisol, and measures of emotional and physical health (P < 0.05 for all), versus placebo. These outcomes were either maintained or improved further at 12 months. CONCLUSIONS Supplementation with the MCs significantly reduces stress, cortisol, and symptoms of sub-optimal emotional and physical health. Determining the basis for these effects, whether systemic or a more central (i.e. brain) is a question that warrants further study.
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Affiliation(s)
- Nicole Tressa Stringham
- a Interdisciplinary Neuroscience Program, Biomedical and Health Sciences Institute , University of Georgia , Athens, GA 30602, USA.,b Department of Psychology , University of Georgia , Athens, GA 30602, USA
| | - Philip V Holmes
- a Interdisciplinary Neuroscience Program, Biomedical and Health Sciences Institute , University of Georgia , Athens, GA 30602, USA.,b Department of Psychology , University of Georgia , Athens, GA 30602, USA
| | - James M Stringham
- b Department of Psychology , University of Georgia , Athens, GA 30602, USA
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Szebeni A, Szebeni K, DiPeri TP, Johnson LA, Stockmeier CA, Crawford JD, Chandley MJ, Hernandez LJ, Burgess KC, Brown RW, Ordway GA. Elevated DNA Oxidation and DNA Repair Enzyme Expression in Brain White Matter in Major Depressive Disorder. Int J Neuropsychopharmacol 2016; 20:363-373. [PMID: 28034960 PMCID: PMC5412018 DOI: 10.1093/ijnp/pyw114] [Citation(s) in RCA: 16] [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: 09/21/2016] [Accepted: 12/20/2016] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Pathology of white matter in brains of patients with major depressive disorder (MDD) is well-documented, but the cellular and molecular basis of this pathology are poorly understood. METHODS Levels of DNA oxidation and gene expression of DNA damage repair enzymes were measured in Brodmann area 10 (BA10) and/or amygdala (uncinate fasciculus) white matter tissue from brains of MDD (n=10) and psychiatrically normal control donors (n=13). DNA oxidation was also measured in BA10 white matter of schizophrenia donors (n=10) and in prefrontal cortical white matter from control rats (n=8) and rats with repeated stress-induced anhedonia (n=8). RESULTS DNA oxidation in BA10 white matter was robustly elevated in MDD as compared to control donors, with a smaller elevation occurring in schizophrenia donors. DNA oxidation levels in psychiatrically affected donors that died by suicide did not significantly differ from DNA oxidation levels in psychiatrically affected donors dying by other causes (non-suicide). Gene expression levels of two base excision repair enzymes, PARP1 and OGG1, were robustly elevated in oligodendrocytes laser captured from BA10 and amygdala white matter of MDD donors, with smaller but significant elevations of these gene expressions in astrocytes. In rats, repeated stress-induced anhedonia, as measured by a reduction in sucrose preference, was associated with increased DNA oxidation in white, but not gray, matter. CONCLUSIONS Cellular residents of brain white matter demonstrate markers of oxidative damage in MDD. Medications that interfere with oxidative damage or pathways activated by oxidative damage have potential to improve treatment for MDD.
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Affiliation(s)
- Attila Szebeni
- Department of Biomedical Sciences, East Tennessee State University, Johnson City, Tennessee (Drs A. Szebeni and K. Szebeni, Mr DiPeri, Mr Johnson, Dr Crawford, Ms Hernandez, Dr Brown, and Ms Burgess); Department of Psychiatry and Human Behavior, University of Mississippi Medical Center, Jackson, Mississippi (Dr Stockmeier); Department of Psychiatry, Case Western Reserve University, Cleveland, Ohio (Dr Stockmeier); Departments of Health Sciences & Biomedical Sciences (Dr Chandley), and Departments of Biomedical Sciences & Psychiatry and Behavioral Sciences (Dr Ordway), East Tennessee State University, Johnson City, Tennessee
| | - Katalin Szebeni
- Department of Biomedical Sciences, East Tennessee State University, Johnson City, Tennessee (Drs A. Szebeni and K. Szebeni, Mr DiPeri, Mr Johnson, Dr Crawford, Ms Hernandez, Dr Brown, and Ms Burgess); Department of Psychiatry and Human Behavior, University of Mississippi Medical Center, Jackson, Mississippi (Dr Stockmeier); Department of Psychiatry, Case Western Reserve University, Cleveland, Ohio (Dr Stockmeier); Departments of Health Sciences & Biomedical Sciences (Dr Chandley), and Departments of Biomedical Sciences & Psychiatry and Behavioral Sciences (Dr Ordway), East Tennessee State University, Johnson City, Tennessee
| | - Timothy P. DiPeri
- Department of Biomedical Sciences, East Tennessee State University, Johnson City, Tennessee (Drs A. Szebeni and K. Szebeni, Mr DiPeri, Mr Johnson, Dr Crawford, Ms Hernandez, Dr Brown, and Ms Burgess); Department of Psychiatry and Human Behavior, University of Mississippi Medical Center, Jackson, Mississippi (Dr Stockmeier); Department of Psychiatry, Case Western Reserve University, Cleveland, Ohio (Dr Stockmeier); Departments of Health Sciences & Biomedical Sciences (Dr Chandley), and Departments of Biomedical Sciences & Psychiatry and Behavioral Sciences (Dr Ordway), East Tennessee State University, Johnson City, Tennessee
| | - Luke A. Johnson
- Department of Biomedical Sciences, East Tennessee State University, Johnson City, Tennessee (Drs A. Szebeni and K. Szebeni, Mr DiPeri, Mr Johnson, Dr Crawford, Ms Hernandez, Dr Brown, and Ms Burgess); Department of Psychiatry and Human Behavior, University of Mississippi Medical Center, Jackson, Mississippi (Dr Stockmeier); Department of Psychiatry, Case Western Reserve University, Cleveland, Ohio (Dr Stockmeier); Departments of Health Sciences & Biomedical Sciences (Dr Chandley), and Departments of Biomedical Sciences & Psychiatry and Behavioral Sciences (Dr Ordway), East Tennessee State University, Johnson City, Tennessee
| | - Craig A. Stockmeier
- Department of Biomedical Sciences, East Tennessee State University, Johnson City, Tennessee (Drs A. Szebeni and K. Szebeni, Mr DiPeri, Mr Johnson, Dr Crawford, Ms Hernandez, Dr Brown, and Ms Burgess); Department of Psychiatry and Human Behavior, University of Mississippi Medical Center, Jackson, Mississippi (Dr Stockmeier); Department of Psychiatry, Case Western Reserve University, Cleveland, Ohio (Dr Stockmeier); Departments of Health Sciences & Biomedical Sciences (Dr Chandley), and Departments of Biomedical Sciences & Psychiatry and Behavioral Sciences (Dr Ordway), East Tennessee State University, Johnson City, Tennessee
| | - Jessica D. Crawford
- Department of Biomedical Sciences, East Tennessee State University, Johnson City, Tennessee (Drs A. Szebeni and K. Szebeni, Mr DiPeri, Mr Johnson, Dr Crawford, Ms Hernandez, Dr Brown, and Ms Burgess); Department of Psychiatry and Human Behavior, University of Mississippi Medical Center, Jackson, Mississippi (Dr Stockmeier); Department of Psychiatry, Case Western Reserve University, Cleveland, Ohio (Dr Stockmeier); Departments of Health Sciences & Biomedical Sciences (Dr Chandley), and Departments of Biomedical Sciences & Psychiatry and Behavioral Sciences (Dr Ordway), East Tennessee State University, Johnson City, Tennessee
| | - Michelle J. Chandley
- Department of Biomedical Sciences, East Tennessee State University, Johnson City, Tennessee (Drs A. Szebeni and K. Szebeni, Mr DiPeri, Mr Johnson, Dr Crawford, Ms Hernandez, Dr Brown, and Ms Burgess); Department of Psychiatry and Human Behavior, University of Mississippi Medical Center, Jackson, Mississippi (Dr Stockmeier); Department of Psychiatry, Case Western Reserve University, Cleveland, Ohio (Dr Stockmeier); Departments of Health Sciences & Biomedical Sciences (Dr Chandley), and Departments of Biomedical Sciences & Psychiatry and Behavioral Sciences (Dr Ordway), East Tennessee State University, Johnson City, Tennessee
| | - Liza J. Hernandez
- Department of Biomedical Sciences, East Tennessee State University, Johnson City, Tennessee (Drs A. Szebeni and K. Szebeni, Mr DiPeri, Mr Johnson, Dr Crawford, Ms Hernandez, Dr Brown, and Ms Burgess); Department of Psychiatry and Human Behavior, University of Mississippi Medical Center, Jackson, Mississippi (Dr Stockmeier); Department of Psychiatry, Case Western Reserve University, Cleveland, Ohio (Dr Stockmeier); Departments of Health Sciences & Biomedical Sciences (Dr Chandley), and Departments of Biomedical Sciences & Psychiatry and Behavioral Sciences (Dr Ordway), East Tennessee State University, Johnson City, Tennessee
| | - Katherine C. Burgess
- Department of Biomedical Sciences, East Tennessee State University, Johnson City, Tennessee (Drs A. Szebeni and K. Szebeni, Mr DiPeri, Mr Johnson, Dr Crawford, Ms Hernandez, Dr Brown, and Ms Burgess); Department of Psychiatry and Human Behavior, University of Mississippi Medical Center, Jackson, Mississippi (Dr Stockmeier); Department of Psychiatry, Case Western Reserve University, Cleveland, Ohio (Dr Stockmeier); Departments of Health Sciences & Biomedical Sciences (Dr Chandley), and Departments of Biomedical Sciences & Psychiatry and Behavioral Sciences (Dr Ordway), East Tennessee State University, Johnson City, Tennessee
| | - Russell W. Brown
- Department of Biomedical Sciences, East Tennessee State University, Johnson City, Tennessee (Drs A. Szebeni and K. Szebeni, Mr DiPeri, Mr Johnson, Dr Crawford, Ms Hernandez, Dr Brown, and Ms Burgess); Department of Psychiatry and Human Behavior, University of Mississippi Medical Center, Jackson, Mississippi (Dr Stockmeier); Department of Psychiatry, Case Western Reserve University, Cleveland, Ohio (Dr Stockmeier); Departments of Health Sciences & Biomedical Sciences (Dr Chandley), and Departments of Biomedical Sciences & Psychiatry and Behavioral Sciences (Dr Ordway), East Tennessee State University, Johnson City, Tennessee
| | - Gregory A. Ordway
- Department of Biomedical Sciences, East Tennessee State University, Johnson City, Tennessee (Drs A. Szebeni and K. Szebeni, Mr DiPeri, Mr Johnson, Dr Crawford, Ms Hernandez, Dr Brown, and Ms Burgess); Department of Psychiatry and Human Behavior, University of Mississippi Medical Center, Jackson, Mississippi (Dr Stockmeier); Department of Psychiatry, Case Western Reserve University, Cleveland, Ohio (Dr Stockmeier); Departments of Health Sciences & Biomedical Sciences (Dr Chandley), and Departments of Biomedical Sciences & Psychiatry and Behavioral Sciences (Dr Ordway), East Tennessee State University, Johnson City, Tennessee
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Neurobehavioral and Antioxidant Effects of Ethanolic Extract of Yellow Propolis. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:2906953. [PMID: 27822336 PMCID: PMC5086397 DOI: 10.1155/2016/2906953] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 09/08/2016] [Accepted: 09/19/2016] [Indexed: 01/24/2023]
Abstract
Propolis is a resin produced by bees from raw material collected from plants, salivary secretions, and beeswax. New therapeutic properties for the Central Nervous System have emerged. We explored the neurobehavioral and antioxidant effects of an ethanolic extract of yellow propolis (EEYP) rich in triterpenoids, primarily lupeol and β-amyrin. Male Wistar rats, 3 months old, were intraperitoneally treated with Tween 5% (control), EEYP (1, 3, 10, and 30 mg/kg), or diazepam, fluoxetine, and caffeine (positive controls) 30 min before the assays. Animals were submitted to open field, elevated plus maze, forced swimming, and inhibitory avoidance tests. After behavioral tasks, blood samples were collected through intracardiac pathway, to evaluate the oxidative balance. The results obtained in the open field and in the elevated plus maze assay showed spontaneous locomotion preserved and anxiolytic-like activity. In the forced swimming test, EEYP demonstrated antidepressant-like activity. In the inhibitory avoidance test, EEYP showed mnemonic activity at 30 mg/kg. In the evaluation of oxidative biochemistry, the extract reduced the production of nitric oxide and malondialdehyde without changing level of total antioxidant, catalase, and superoxide dismutase, induced by behavioral stress. Our results highlight that EEYP emerges as a promising anxiolytic, antidepressant, mnemonic, and antioxidant natural product.
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Contextual adversity, telomere erosion, pubertal development, and health: Two models of accelerated aging, or one? Dev Psychopathol 2016; 28:1367-1383. [DOI: 10.1017/s0954579416000900] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
AbstractTwo independent lines of inquiry suggest that growing up under conditions of contextual adversity (e.g., poverty and household chaos) accelerates aging and undermines long-term health. Whereas work addressing the developmental origins of health and disease highlights accelerated-aging effects of contextual adversity on telomere erosion, that informed by an evolutionary analysis of reproductive strategies highlights such effects with regard to pubertal development (in females). That both shorter telomeres early in life and earlier age of menarche are associated with poor health later in life raises the prospect, consistent with evolutionary life-history theory, that these two bodies of theory and research are tapping into the same evolutionary–developmental process whereby longer term health costs are traded off for increased probability of reproducing before dying via a process of accelerated aging. Here we make the case for such a claim, while highlighting biological processes responsible for these effects, as well as unknowns in the epigenetic equation that might instantiate these contextually regulated developmental processes.
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Oxidative and nitrosative stress pathways in the brain of socially isolated adult male rats demonstrating depressive- and anxiety-like symptoms. Brain Struct Funct 2016; 222:1-20. [PMID: 27033097 DOI: 10.1007/s00429-016-1218-9] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 03/17/2016] [Indexed: 01/18/2023]
Abstract
Various stressors may disrupt the redox homeostasis of an organism by causing oxidative and nitrosative stress that may activate stressor-specific pathways and provoke specific responses. Chronic social isolation (CSIS) represents a mild chronic stress that evokes a variety of neurobehavioral changes in rats similar to those observed in people with psychiatric disorders, including depression. Most rodent studies have focused on the effect of social isolation during weaning or adolescence, while its effect in adult rats has not been extensively examined. In this review, we discuss the current knowledge regarding the involvement of oxidative/nitrosative stress pathways in the prefrontal cortex and hippocampus of adult male rats exposed to CSIS, focusing on hypothalamic-pituitary-adrenocortical (HPA) axis activity, behavior parameters, antioxidative defense systems, stress signaling mediated by nuclear factor-kappa B (NF-κB), and mitochondria-related proapoptotic signaling. Although increased concentrations of corticosterone (CORT) have been shown to induce oxidative and nitrosative stress, we suggest a mechanism underlying the glucocorticoid paradox whereby a state of oxidative/nitrosative stress may exist under basal CORT levels. This review also highlights the differential susceptibility of prefrontal cortex and hippocampus to oxidative stress following CSIS and suggests a possible cellular pathway of stress tolerance that preserves the hippocampus from molecular damage and apoptosis. The differential regulation of the transcriptional factor NF-κB, and the enzymes inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) following CSIS may be one functional difference between the response of the prefrontal cortex and hippocampus, thus identifying potentially relevant targets for antidepressant treatment.
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Silva MCC, de Sousa CNS, Gomes PXL, de Oliveira GV, Araújo FYR, Ximenes NC, da Silva JC, Vasconcelos GS, Leal LKAM, Macêdo D, Vasconcelos SMM. Evidence for protective effect of lipoic acid and desvenlafaxine on oxidative stress in a model depression in mice. Prog Neuropsychopharmacol Biol Psychiatry 2016; 64:142-8. [PMID: 26265141 DOI: 10.1016/j.pnpbp.2015.08.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 08/05/2015] [Accepted: 08/06/2015] [Indexed: 11/26/2022]
Abstract
Oxidative stress is implicated in the neurobiology of depression. Here we investigated oxidative alterations in brain areas of animals submitted to the model of depression induced by corticosterone (CORT) and the effects of the antioxidant compound alpha-lipoic acid (ALA) alone or associated with the antidepressant desvenlafaxine (DVS) in these alterations. Female mice received vehicle or CORT (20 mg/kg) during 14 days. From the 15th to 21st days different animals received further administrations of: vehicle, DVS (10 or 20 mg/kg), ALA (100 or 200 mg/kg), or the combinations of DVS10+ALA100, DVS20+ALA100, DVS10+ALA200, or DVS20+ALA200. Twenty-four hours after the last drug administration prefrontal cortex (PFC), hippocampus (HC) and striatum (ST) were dissected for the determination of the activity of superoxide dismutase (SOD), reduced glutathione (GSH) and lipid peroxidation (LP) levels. CORT significantly increased SOD activity in the PFC and HC, decreased GSH levels in the HC and increased LP in all brain areas studied when compared to saline-treated animals. Decrements of SOD activity were observed in all groups and brain areas studied when compared to controls and CORT. The hippocampal decrease in GSH was reversed by ALA100, DVS10+ALA100, DVS20+ALA100 and DVS20+ALA200. The same DVS+ALA combination groups presented increased levels of GSH in the PFC and ST. The greater GSH levels were observed in the PFC, HC and ST of DVS20+ALA200 mice. LP was reversed in the groups ALA200 (PFC), DVS10+ALA100, DVS20+ALA100 (PFC, HC and ST), and DVS20+ALA200 (PFC, HC). Our findings contribute to the previous preclinical evidences implicating ALA as a promising agent for augmentation therapy in depression.
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Affiliation(s)
- Márcia Calheiros Chaves Silva
- Department of Physiology and Pharmacology, Federal University of Ceará, Rua Cel. Nunes de Melo 1127, 60431-270 Fortaleza, CE, Brazil
| | - Caren Nádia Soares de Sousa
- Department of Physiology and Pharmacology, Federal University of Ceará, Rua Cel. Nunes de Melo 1127, 60431-270 Fortaleza, CE, Brazil
| | - Patrícia Xavier Lima Gomes
- Department of Physiology and Pharmacology, Federal University of Ceará, Rua Cel. Nunes de Melo 1127, 60431-270 Fortaleza, CE, Brazil
| | - Gersilene Valente de Oliveira
- Department of Physiology and Pharmacology, Federal University of Ceará, Rua Cel. Nunes de Melo 1127, 60431-270 Fortaleza, CE, Brazil
| | - Fernanda Yvelize Ramos Araújo
- Department of Physiology and Pharmacology, Federal University of Ceará, Rua Cel. Nunes de Melo 1127, 60431-270 Fortaleza, CE, Brazil
| | - Naiara Coelho Ximenes
- Department of Physiology and Pharmacology, Federal University of Ceará, Rua Cel. Nunes de Melo 1127, 60431-270 Fortaleza, CE, Brazil
| | - Jéssica Calheiros da Silva
- Department of Physiology and Pharmacology, Federal University of Ceará, Rua Cel. Nunes de Melo 1127, 60431-270 Fortaleza, CE, Brazil
| | - Germana Silva Vasconcelos
- Department of Physiology and Pharmacology, Federal University of Ceará, Rua Cel. Nunes de Melo 1127, 60431-270 Fortaleza, CE, Brazil
| | | | - Danielle Macêdo
- Department of Physiology and Pharmacology, Federal University of Ceará, Rua Cel. Nunes de Melo 1127, 60431-270 Fortaleza, CE, Brazil
| | - Silvânia Maria Mendes Vasconcelos
- Department of Physiology and Pharmacology, Federal University of Ceará, Rua Cel. Nunes de Melo 1127, 60431-270 Fortaleza, CE, Brazil.
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Liu YM, Shen SN, Xia FB, Chang Q, Liu XM, Pan RL. Neuroprotection of Stilbenes from Leaves of Cajanus cajan against Oxidative Damage Induced by Corticosterone and Glutamate in Differentiated PC12 Cells. CHINESE HERBAL MEDICINES 2015. [DOI: 10.1016/s1674-6384(15)60045-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Singh JCH, Kakalij RM, Kshirsagar RP, Kumar BH, Komakula SSB, Diwan PV. Cognitive effects of vanillic acid against streptozotocin-induced neurodegeneration in mice. PHARMACEUTICAL BIOLOGY 2015; 53:630-6. [PMID: 25472801 DOI: 10.3109/13880209.2014.935866] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
CONTEXT Vanillic acid (VA), a flavoring agent used in food and drug products, obtained naturally from the plant Angelica sinensis (Oliv.) Diels (Apiaceae), used in the traditional Chinese medicine. It is reported to possess strong antioxidant, anti-inflammatory, and neuroprotective effects. However, the pharmacological effects on oxidative stress-induced neurodegeneration are not well investigated. OBJECTIVE This study investigates the neuroprotective effect of VA on streptozotocin (STZ)-induced neurodegeneration in mice through behavioral and biochemical parameters. MATERIALS AND METHODS The behavioral effects were determined using the Y-maze and open-field habituation memory. In biochemical parameters, acetylcholinesterase (AChE), corticosterone, tumor necrosis factor (TNF)-α, and antioxidants (superoxide dismutase (SOD), glutathione peroxidase (GPx), and catalase) were measured. Five groups of animals used were of control, negative control, and three separate groups treated with 25, 50, and 100 mg/kg of VA, respectively, for 28 d. Intracerebroventricular (ICV) injections of STZ were performed for all groups except control on 14th and 16th of 28 d of VA treatment. RESULTS VA improved spatial learning and memory retention by preventing oxidative stress compared with control animals. VA at 50 and 100 mg/kg dose significantly (p < 0.001) improved the habituation memory, decreased the AChE, corticosterone, TNF-α, and increased the antioxidants (p < 0.001). VA (100 mg/kg) exhibited dose-dependent effect in all parameters with p < 0.001 except antioxidants in which VA showed the significance of p < 0.01. DISCUSSION AND CONCLUSION VA exhibited reduction in AChE, TNF-α, and corticosterone with improved antioxidants to contribute neuroprotection and could be an effective therapeutic agent for treating neurodegenerative disorders.
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Bandegi AR, Rashidy-Pour A, Vafaei AA, Ghadrdoost B. Protective Effects of Crocus Sativus L. Extract and Crocin against Chronic-Stress Induced Oxidative Damage of Brain, Liver and Kidneys in Rats. Adv Pharm Bull 2014; 4:493-9. [PMID: 25671180 DOI: 10.5681/apb.2014.073] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Revised: 11/26/2014] [Accepted: 11/29/2014] [Indexed: 11/17/2022] Open
Abstract
PURPOSE Chronic stress has been reported to induce oxidative damage of the brain. A few studies have shown that Crocus Sativus L., commonly known as saffron and its active constituent crocin may have a protective effect against oxidative stress. The present work was designed to study the protective effects of saffron extract and crocin on chronic - stress induced oxidative stress damage of the brain, liver and kidneys. METHODS Rats were injected with a daily dose of saffron extract (30 mg/kg, IP) or crocin (30 mg/kg, IP) during a period of 21 days following chronic restraint stress (6 h/day). In order to determine the changes of the oxidative stress parameters following chronic stress, the levels of the lipid peroxidation product, malondialdehyde (MDA), the total antioxidant reactivity (TAR), as well as antioxidant enzyme activities glutathione peroxidase (GPx), glutathione reductase (GR) and superoxide dismutase (SOD) were measured in the brain, liver and kidneys tissues after the end of chronic stress. RESULTS In the stressed animals that receiving of saline, levels of MDA, and the activities of GPx, GR, and SOD were significantly higher (P<0.0001) and the TAR capacity were significantly lower than those of the non-stressed animals (P<0.0001). Both saffron extract and crocin were able to reverse these changes in the stressed animals as compared with the control groups (P<0.05). CONCLUSION These observations indicate that saffron and its active constituent crocin can prevent chronic stress-induced oxidative stress damage of the brain, liver and kidneys and suggest that these substances may be useful against oxidative stress.
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Affiliation(s)
- Ahmad Reza Bandegi
- Laboratory of Learning and Memory, Research Center and Department of Physiology, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran. ; Laboratory of Endocrine Research, Department of Biochemistry, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Ali Rashidy-Pour
- Laboratory of Learning and Memory, Research Center and Department of Physiology, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Abbas Ali Vafaei
- Laboratory of Learning and Memory, Research Center and Department of Physiology, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Behshid Ghadrdoost
- Laboratory of Learning and Memory, Research Center and Department of Physiology, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
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Neonatal dexamethasone accelerates spreading depression in the rat, and antioxidant vitamins counteract this effect. Brain Res 2014; 1591:93-101. [DOI: 10.1016/j.brainres.2014.09.075] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Revised: 09/29/2014] [Accepted: 09/30/2014] [Indexed: 12/27/2022]
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Shortened telomere length in white matter oligodendrocytes in major depression: potential role of oxidative stress. Int J Neuropsychopharmacol 2014; 17:1579-89. [PMID: 24967945 DOI: 10.1017/s1461145714000698] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Telomere shortening is observed in peripheral mononuclear cells from patients with major depressive disorder (MDD). Whether this finding and its biological causes impact the health of the brain in MDD is unknown. Brain cells have differing vulnerabilities to biological mechanisms known to play a role in accelerating telomere shortening. Here, two glia cell populations (oligodendrocytes and astrocytes) known to have different vulnerabilities to a key mediator of telomere shortening, oxidative stress, were studied. The two cell populations were separately collected by laser capture micro-dissection of two white matter regions shown previously to demonstrate pathology in MDD patients. Cells were collected from brain donors with MDD at the time of death and age-matched psychiatrically normal control donors (N = 12 donor pairs). Relative telomere lengths in white matter oligodendrocytes, but not astrocytes, from both brain regions were significantly shorter for MDD donors as compared to matched control donors. Gene expression levels of telomerase reverse transcriptase were significantly lower in white matter oligodendrocytes from MDD as compared to control donors. Likewise, the gene expression of oxidative defence enzymes superoxide dismutases (SOD1 and SOD2), catalase (CAT) and glutathione peroxidase (GPX1) were significantly lower in oligodendrocytes from MDD as compared to control donors. No such gene expression changes were observed in astrocytes from MDD donors. These findings suggest that attenuated oxidative stress defence and deficient telomerase contribute to telomere shortening in oligodendrocytes in MDD, and suggest an aetiological link between telomere shortening and white matter abnormalities previously described in MDD.
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Dhingra MS, Dhingra S, Kumria R, Chadha R, Singh T, Kumar A, Karan M. Effect of trimethylgallic acid esters against chronic stress-induced anxiety-like behavior and oxidative stress in mice. Pharmacol Rep 2014; 66:606-12. [DOI: 10.1016/j.pharep.2014.01.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2013] [Revised: 12/20/2013] [Accepted: 01/13/2014] [Indexed: 01/01/2023]
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Chronic administration of quercetin prevent spatial learning and memory deficits provoked by chronic stress in rats. Behav Brain Res 2014; 270:196-205. [PMID: 24844750 DOI: 10.1016/j.bbr.2014.05.015] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Revised: 05/08/2014] [Accepted: 05/12/2014] [Indexed: 01/23/2023]
Abstract
There are several reports that cognitive impairment is observed in stress related disorders and chronic stress impairs learning and memory. However, very few studies have looked into the possible ways of preventing this stress-induced deficit. This research study was conducted to evaluate the effects of quercetin, a natural flavonoid, with strong antioxidant and free radical scavenger properties, on chronic stress induced learning and memory deficits and oxidative stress in hippocampus. For chronic stress, rats were restrained daily for 6h/day (from 9:00 to 15:00) for 21 days in well-ventilated plexiglass tubes without access to food and water. The animals were injected with quercetin or vehicle 60 min before restraint stress over a period of 21 days. Then, rats trained with six trials per day for 6 consecutive days in the water maze. On day 28, a probe test was done to measure memory retention. In addition, oxidative stress markers in the hippocampus were evaluated. Results of this study demonstrated that chronic stress exposure rats exhibited higher escape latency during training trials and reduced time spent in target quadrant, higher escape location latency and average proximity in probe trial test. Quercetin (50mg/kg) treatment during restraint stress (21 days) markedly decreased escape latency and increased time spent in target quadrant during Morris water maze task. In comparison to vehicle treated group, chronic-stress group had significantly higher malondialdehyde (MDA) levels, significantly higher superoxide dismutase (SOD) activity and significantly lower glutathione peroxidase (GPx) activity in the hippocampus. Quercetin treatment caused a significant decrease in the hippocampus MDA levels and improves SOD and GPx activities in stressed animals. Finally, quercetin significantly decreased plasma corticosterone levels in stressed animals. Based on results of this study, chronic stress has detrimental effects on learning and memory and quercetin treatment can prevent from oxidative stress and impairment of learning and memory induced by chronic stress.
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Protective effects of phosphodiesterase 2 inhibitor on depression- and anxiety-like behaviors: involvement of antioxidant and anti-apoptotic mechanisms. Behav Brain Res 2014; 268:150-158. [PMID: 24694839 DOI: 10.1016/j.bbr.2014.03.042] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 03/18/2014] [Accepted: 03/24/2014] [Indexed: 12/31/2022]
Abstract
Stress occurs in everyday life, but the relationship between stress and the onset or development of depression/anxiety remains unknown. Increasing evidence suggests that the impairment of antioxidant defense and the neuronal cell death are important in the process of emotional disorders. Chronic stress impairs the homeostasis of antioxidants/oxidation, which results in the aberrant stimulation of the cell cycle proteins where cGMP-PKG signaling is thought to have an inhibitory role. Phosphodiesterase 2 (PDE2) is linked to cGMP-PKG signaling and highly expressed in the limbic brain regions including hippocampus and amygdala, which may play important roles in the treatment of depression and anxiety. To address the possible effects of PDE2 inhibitors on depression-/anxiety-like behaviors and the underlying mechanisms, Bay 60-7550 (0.75, 1.5 and 3 mg/kg, i.p.) was administered 30 min before chronic stress. The results suggested that Bay 60-7550 not only restored the behavioral changes but also regulated Cu/Zn superoxide dismutase (SOD) levels differentially in hippocampus and amygdala, which were increased in the hippocampus while decreased in the amygdala. It was also significant that Bay 60-7550 regulated the abnormalities of pro- and anti-apoptotic components, such as Bax, Caspase 3 and Bcl-2, and the indicator of PKG signaling characterized by pVASP(ser239), in these two brain regions. The results suggested that Bay 60-7550 is able to alleviate oxidative stress and mediate part of the apoptotic machinery in neuronal cells possibly through SOD-cGMP/PKG-anti-apoptosis signaling and that inhibition of PDE2 may represent a novel therapeutic target for psychiatric disorders, such as depression and anxiety.
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van Ockenburg SL, de Jonge P, van der Harst P, Ormel J, Rosmalen JGM. Does neuroticism make you old? Prospective associations between neuroticism and leukocyte telomere length. Psychol Med 2014; 44:723-729. [PMID: 23834823 DOI: 10.1017/s0033291713001657] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Telomere attrition, causing accelerated aging, might be one of the mechanisms through which neuroticism leads to somatic disease and increased all-cause mortality. In the current study we investigated whether neuroticism is prospectively associated with shorter telomere length (TL), a biological marker of aging. METHOD Participants were 3432 adults (mean age 52.9 years, range 32-79). Data were collected at baseline (T1) and at two follow-up visits after 4 years (T2) and 6 years (T3). Neuroticism was assessed using the 12-item neuroticism scale of the Revised Eysenck Personality Questionnaire (EPQ-R) at T2 and T3. TL was measured by a monochrome multiplex quantitative polymerase chain reaction (PCR) assay at T1, T2 and T3. A linear mixed model was used to assess whether neuroticism could predict TL prospectively after adjusting for age, sex, body mass index (BMI), frequency of sports, smoking status, presence of chronic diseases and level of education. RESULTS Neuroticism was a significant negative predictor of TL at follow-up (B = -0.004, p = 0.044) after adjusting for sex, age, baseline TL and various biological and lifestyle factors. CONCLUSIONS High neuroticism is significantly and prospectively associated with telomere attrition independent of lifestyle and other risk factors.
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Affiliation(s)
- S L van Ockenburg
- Interdisciplinary Center for Psychopathology and Emotion Regulation, University of Groningen, University Medical Center Groningen, The Netherlands
| | - P de Jonge
- Interdisciplinary Center for Psychopathology and Emotion Regulation, University of Groningen, University Medical Center Groningen, The Netherlands
| | - P van der Harst
- Department of Cardiology, University of Groningen, University Medical Center Groningen, The Netherlands
| | - J Ormel
- Interdisciplinary Center for Psychopathology and Emotion Regulation, University of Groningen, University Medical Center Groningen, The Netherlands
| | - J G M Rosmalen
- Interdisciplinary Center for Psychopathology and Emotion Regulation, University of Groningen, University Medical Center Groningen, The Netherlands
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Bradykinin preconditioning affects the number of degenerated neurons and the level of antioxidant enzymes in spinal cord ischemia in rabbits. Acta Histochem 2014; 116:252-7. [PMID: 23981244 DOI: 10.1016/j.acthis.2013.07.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2013] [Revised: 07/22/2013] [Accepted: 07/23/2013] [Indexed: 12/16/2022]
Abstract
Bradykinin preconditioning has been used for acquisition of tolerance after spinal cord ischemia. Rabbits were preconditioned intraperitoneally with bradykinin 48 h prior to 20 min of abdominal aorta ligation followed by 24 and 48 h of reperfusion. The activities of SOD and catalase were measured and Fluoro Jade B (FJB)-positive degenerated neurons were evaluated. The outcomes of Tarlov scoring system used to assess neurological functions showed significant improvement in bradykinin groups compared to the ischemic group. The number of FJB-positive degenerated neurons was decreased in ventral horns of both bradykinin groups. Significantly decreased activities of total SOD and mitochondrial Mn-SOD were also detected in both bradykinin groups versus ischemic group while CuZn-SOD and catalase activities were significantly decreased only in the bradykinin group after 24h of reperfusion versus ischemic group. These findings suggest that one of the possibilities of the neuroprotective effect of delayed bradykinin preconditioning against spinal cord ischemic injury could be realized by mitochondrial protection and decreased synthesis of Mn-SOD as well as by promotion of neuronal survival.
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Marasco V, Spencer KA, Robinson J, Herzyk P, Costantini D. Developmental post-natal stress can alter the effects of pre-natal stress on the adult redox balance. Gen Comp Endocrinol 2013; 191:239-46. [PMID: 23867229 DOI: 10.1016/j.ygcen.2013.07.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2013] [Revised: 06/27/2013] [Accepted: 07/01/2013] [Indexed: 11/26/2022]
Abstract
Across diverse vertebrate taxa, stressful environmental conditions during development can shape phenotypic trajectories of developing individuals, which, while adaptive in the short-term, may impair health and survival in adulthood. Regardless, the long-lasting benefits or costs of early life stress are likely to depend on the conditions experienced across differing stages of development. Here, we used the Japanese quail (Coturnix coturnix japonica) to experimentally manipulate exposure to stress hormones in developing individuals. We tested the hypothesis that interactions occurring between pre- and post-natal developmental periods can induce long-term shifts on the adult oxidant phenotype in non-breeding sexually mature individuals. We showed that early life stress can induce long-term alterations in the basal antioxidant defences. The magnitude of these effects depended upon the timing of glucocorticoid exposure and upon interactions between the pre- and post-natal stressful stimuli. We also found differences among tissues with stronger effects in the erythrocytes than in the brain in which the long-term effects of glucocorticoids on antioxidant biomarkers appeared to be region-specific. Recent experimental work has demonstrated that early life exposure to stress hormones can markedly reduce adult survival (Monaghan et al., 2012). Our results suggest that long-term shifts in basal antioxidant defences might be one of the potential mechanisms driving such accelerated ageing processes and that post-natal interventions during development may be a potential tool to shape the effects induced by pre-natally glucococorticoid-exposed phenotypes.
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Affiliation(s)
- Valeria Marasco
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, UK.
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46
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Goosby BJ, Heidbrink C. Transgenerational Consequences of Racial Discrimination for African American Health. SOCIOLOGY COMPASS 2013; 7:630-643. [PMID: 24855488 PMCID: PMC4026365 DOI: 10.1111/soc4.12054] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Disparities in African American health remain pervasive and persist transgenerationally. There is a growing consensus that both structural and interpersonal racial discrimination are key mechanisms affecting African American health. The Biopsychosocial Model of Racism as a Stressor posits that the persistent stress of experiencing discrimination take a physical toll on the health of African Americans and is ultimately manifested in the onset of illness. However, the degree to which the health consequences of racism and discrimination can be passed down from one generation to the next is an important avenue of exploration. In this review, we discuss and link literature across disciplines demonstrating the harmful impact of racism on African American physical health and the health of their offspring.
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Affiliation(s)
- Bridget J. Goosby
- Department of Sociology, University of Nebraska Lincoln, 742 Oldfather Hall, Lincoln, NE 68588, United States
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Milaneschi Y, Cesari M, Simonsick EM, Vogelzangs N, Kanaya AM, Yaffe K, Patrignani P, Metti A, Kritchevsky SB, Pahor M, Ferrucci L, Penninx BWJH. Lipid peroxidation and depressed mood in community-dwelling older men and women. PLoS One 2013; 8:e65406. [PMID: 23776478 PMCID: PMC3679197 DOI: 10.1371/journal.pone.0065406] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Accepted: 04/24/2013] [Indexed: 12/31/2022] Open
Abstract
It has been hypothesized that cellular damage caused by oxidative stress is associated with late-life depression but epidemiological evidence is limited. In the present study we evaluated the association between urinary 8-iso-prostaglandin F2α (8-iso-PGF2α), a biomarker of lipid peroxidation, and depressed mood in a large sample of community-dwelling older adults. Participants were selected from the Health, Aging and Body Composition study, a community-based longitudinal study of older persons (aged 70–79 years). The present analyses was based on a subsample of 1027 men and 948 women free of mobility disability. Urinary concentration of 8-iso-PGF2α was measured by radioimmunoassay methods and adjusted for urinary creatinine. Depressed mood was defined as a score greater than 5 on the 15-item Geriatric Depression Scale and/or use of antidepressant medications. Depressed mood was present in 3.0% of men and 5.5% of women. Depressed men presented higher urinary concentrations of 8-iso-PGF2α than non-depressed men even after adjustment for multiple sociodemographic, lifestyle and health factors (p = 0.03, Cohen’s d = 0.30). This association was not present in women (depressed status-by-sex interaction p = 0.04). Our study showed that oxidative damage may be linked to depression in older men from a large sample of the general population. Further studies are needed to explore whether the modulation of oxidative stress may break down the link between late-life depression and its deleterious health consequences.
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Affiliation(s)
- Yuri Milaneschi
- Department of Psychiatry and EMGO Institute for Health and Care Research, VU University Medical Center/GGZ inGeest, Amsterdam, The Netherlands.
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Bhatt AJ, Feng Y, Wang J, Famuyide M, Hersey K. Dexamethasone induces apoptosis of progenitor cells in the subventricular zone and dentate gyrus of developing rat brain. J Neurosci Res 2013; 91:1191-202. [PMID: 23686666 DOI: 10.1002/jnr.23232] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2012] [Revised: 01/09/2013] [Accepted: 03/12/2013] [Indexed: 01/22/2023]
Abstract
The use of dexamethasone in premature infants to prevent and/or treat bronchopulmonary dysplasia adversely affects neurocognitive development and is associated with cerebral palsy. The underlying mechanisms of these effects are multifactorial and likely include apoptosis. The objective of this study was to confirm whether dexamethasone causes apoptosis in different regions of the developing rat brain. On postnatal day 2, pups in each litter were randomly divided into the dexamethasone-treated (n = 91) or vehicle-treated (n = 92) groups. Rat pups in the dexamethasone group received tapering doses of dexamethasone on postnatal days 3-6 (0.5, 0.25, 0.125, and 0.06 mg/kg/day, respectively). Dexamethasone treatment significantly decreased the gain of body and brain weight and increased brain caspase-3 activity, DNA fragments, terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling, and cleaved caspse-3-positive cells at 24 hr after treatment. Dexamethasone increased cleaved caspse-3-positive cells in the cortex, thalamus, hippocampus, cerebellum, dentate gyrus, and subventricular zone. Double-immunofluorescence studies show that progenitor cells in the subventricular zone and dentate gyrus preferentially undergo apoptosis following dexamethasone exposure. These results indicate that dexamethasone-induced apoptosis in immature cells in developing brain is one of the mechanisms of its neurodegenerative effects in newborn rats.
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Affiliation(s)
- Abhay J Bhatt
- Division of Newborn Medicine, Department of Pediatrics, University of Mississippi Medical Center, Jackson, Mississippi, USA.
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Dalla Corte CL, de Carvalho NR, Amaral GP, Puntel GO, Silva LFA, Retamoso LT, Royes LFF, Bresciani GB, da Cruz IB, Rocha JB, Barrio Lera JP, Soares FA. Antioxidant effect of organic purple grape juice on exhaustive exercise. Appl Physiol Nutr Metab 2013; 38:558-65. [DOI: 10.1139/apnm-2012-0230] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This study aimed to assess the potential protective effect of organic purple grape juice (PGJ) on oxidative stress produced by an exhaustive exercise bout in rats. To test this hypothesis, rats were acutely treated with organic PGJ (Vitis labrusca) and subsequently submitted to an exhaustive exercise bout. Parameters of oxidative stress, such as thiobarbituric acid reactive species (TBARS) levels, 2′,7′,-dichlorofluorescein diacetate (DCFH-DA) oxidation, and nonprotein sulfhydryl levels (NP-SH) in the brain, skeletal muscle, and blood, were evaluated. Enzyme activity of Na+,K+-ATPase, Ca2+-ATPase, and δ-aminolevulinate dehydratase (δ-ALA-D) in the brain, skeletal muscle, and blood were also assayed. Statistical analysis showed that the exhaustive exercise bout increased TBARS levels and DCFH-DA oxidation, and decreased NP-SH levels in rat tissue. Ca2+-ATPase activity was increased in groups exposed to both exercise and PGJ treatment. The results indicate that organic PGJ intake was able to protect against the oxidative damage caused by an exhaustive exercise bout in different rat tissues.
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Affiliation(s)
- Cristiane L. Dalla Corte
- Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, CEP 97105-900, RS, Brazil
| | - Nélson R. de Carvalho
- Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, CEP 97105-900, RS, Brazil
| | - Guilherme P. Amaral
- Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, CEP 97105-900, RS, Brazil
| | - Gustavo O. Puntel
- Departamento de Morfologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, CEP 97105-900, RS, Brazil
| | - Luiz Fernando A. Silva
- Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, CEP 97105-900, RS, Brazil
| | - Leandro T. Retamoso
- Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, CEP 97105-900, RS, Brazil
| | - Luiz Fernando F. Royes
- Departamento de Fisiologia e Farmacologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, CEP 97105-900, RS, Brazil
| | - Guilherme B. Bresciani
- Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, CEP 97105-900, RS, Brazil
| | - Ivana B.M. da Cruz
- Departamento de Morfologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, CEP 97105-900, RS, Brazil
| | - João B.T. Rocha
- Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, CEP 97105-900, RS, Brazil
| | - Juan Pablo Barrio Lera
- Instituto de Biomedicina (IBIOMED), Universidad de León, León, Castilla y León, 24071, Spain
| | - Félix A.A. Soares
- Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, CEP 97105-900, RS, Brazil
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Glucocorticoids exacerbate cognitive deficits in TDP-25 transgenic mice via a glutathione-mediated mechanism: implications for aging, stress and TDP-43 proteinopathies. J Neurosci 2013; 33:906-13. [PMID: 23325230 DOI: 10.1523/jneurosci.3314-12.2013] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The accumulation of TDP-43 (transactive response DNA-binding protein 43) and its 25 kDa C-terminal fragment (TDP-25) is a hallmark of several neurodegenerative disorders, including frontotemporal lobar degeneration (FTLD-TDP) and amyotrophic lateral sclerosis (ALS). The majority of FTLD-TDP cases are due to loss of function mutations in the gene encoding progranulin, a secreted growth factor. In ALS, specific mutations in the gene encoding TDP-43 have been linked to the disease pathogenesis. In both cases, however, the penetrance of the mutations greatly increases during aging, suggesting that other genetic or environmental factors may facilitate the development of the disease. Using transgenic mice that overexpress the 25 kDa C-terminal fragment of TDP-43, here we show that glucocorticoids, stress hormones known to increase the brain susceptibility to neurotoxic insults, increase the levels of soluble TDP-25 and exacerbate cognitive deficits, without altering full-length TDP-43 levels. Additionally, we show that the mechanism underlying the glucocorticoid-mediated increase in TDP-25 levels is coupled to changes in the glutathione redox state. Glutathione is an antioxidant involved in protecting cells from damage caused by reactive oxygen species; notably, alterations in the ratio of reduced to oxidized glutathione, which is the primary determinant of the cellular redox state, are associated with aging and neurodegeneration. We show that restoring the ratio of reduced to oxidized glutathione blocks the glucocorticoid effects on TDP-25. These data show that glucocorticoids potentiate the neurotoxic action of TDP-25 by increasing its levels and clearly indicate the role of cellular oxidative damage in this process.
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