Behavioral, cardiovascular and endocrine alterations induced by chronic stress in rats fed a high-fat diet

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Autor(es): dc.contributorUniversidade Federal de Santa Catarina (UFSC)-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorBatschauer, Tiago-
Autor(es): dc.creatorCordeiro, Júlio M.-
Autor(es): dc.creatorSimas, Bruna B.-
Autor(es): dc.creatorBrunetta, Henver S.-
Autor(es): dc.creatorSouza, Raul M.-
Autor(es): dc.creatorNunes, Everson A.-
Autor(es): dc.creatorReis, Wagner L.-
Autor(es): dc.creatorMoreira, Eduardo L.G.-
Autor(es): dc.creatorCrestani, Carlos C. [UNESP]-
Autor(es): dc.creatorSantos, Adair R.S.-
Autor(es): dc.creatorSperetta, Guilherme F.-
Data de aceite: dc.date.accessioned2022-02-22T00:26:10Z-
Data de disponibilização: dc.date.available2022-02-22T00:26:10Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-09-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.physbeh.2020.113013-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/199007-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/199007-
Descrição: dc.descriptionChronic stress is a risk factor for cardiovascular diseases (CVD) and anxiety disorders (AD). Obesity also increases the risk of CVD and AD. The modern lifestyle commonly includes high-fat diet (HFD) intake and daily exposure to stressful events. However, it is not completely understood whether chronic stress exacerbates HFD-induced behavioral and physiological changes. Thus, this study aimed to evaluate the effects of the exposure to chronic variable stress (CVS) on behavioral, cardiovascular, and endocrine parameters in rats fed an HFD. Male Wistar rats were divided into four groups: control-standard chow diet (control-SD), control-HFD, CVS-SD, and CVS-HFD. The control-HFD and CVS-HFD groups were fed with HFD for six weeks. The CVS-HFD and CVS-SD groups were exposed to a CVS protocol in the last ten days of the six weeks. The behavioral analysis revealed that CVS decreased the open-arm exploration time during the elevated plus-maze test (p < 0.05). HFD promoted metabolic disorders and increased angiotensin II and leptin blood levels (p < 0.05). CVS or HFD increased blood pressure and the sympathetic nervous system (SNS) modulation of the heart and vessels and decreased baroreflex activity (p < 0.05). Combining CVS and HFD exacerbated the cardiac SNS response and increased basal heart rate (HR) (p < 0.05). CVS or HFD did not affect vascular function and aorta nitrate (p > 0.05). Taken together, these data indicate a synergism between HFD and CVS on the HR and cardiac SNS responses, suggesting an increased cardiovascular risk. Besides, neuroendocrine and anxiogenic disturbers may contribute to the cardiovascular changes induced by HFD and CVS, respectively.-
Descrição: dc.descriptionDepartment of Physiological Sciences Biological Sciences Centre Federal University of Santa Catarina (UFSC)-
Descrição: dc.descriptionPostgraduate Program in Neuroscience Biological Sciences Centre Federal University of Santa Catarina (UFSC)-
Descrição: dc.descriptionLaboratory of Pharmacology São Paulo State University (UNESP) School of Pharmaceutical Sciences-
Descrição: dc.descriptionLaboratory of Pharmacology São Paulo State University (UNESP) School of Pharmaceutical Sciences-
Idioma: dc.languageen-
Relação: dc.relationPhysiology and Behavior-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAngiotensin II-
Palavras-chave: dc.subjectAnxiety-
Palavras-chave: dc.subjectBaroreflex activity-
Palavras-chave: dc.subjectChronic variable stress-
Palavras-chave: dc.subjectLeptin-
Palavras-chave: dc.subjectObesity-
Título: dc.titleBehavioral, cardiovascular and endocrine alterations induced by chronic stress in rats fed a high-fat diet-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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