期刊
NEUROSCIENCE AND BIOBEHAVIORAL REVIEWS
卷 124, 期 -, 页码 78-88出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.neubiorev.2021.01.020
关键词
Chronic-stress; Stress-induced depression; 5-HT receptor; Selective serotonin reuptake inhibitors
资金
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior(CAPES)
- Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro (FAPERJ)
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
This study investigated the changes of 5-HT receptors in animal models of chronic-stress-induced depression, finding altered expression of 5-HT1A receptors in the frontal cortex and changes in 5-HT2A receptors in the whole cortex and hypothalamus of rats following CUMS. By including a qualitative-structured analysis and risk-of-bias tools, potential sources of data variation between studies were identified, emphasizing the importance of considering these in future research on chronic-stress induced depression in animals.
Chronic-stress-induced depression is recognized as a widespread public health concern. Selective serotonin re uptake inhibitors (SSRIs) have been the most common treatment for this illness. However, the role of 5-hydroxytryptamine (5-HT) receptor subtypes in stress-induced depression remains unclear. Evidence from Animal studies has reported a variety of results regarding the effects of chronic unpredictable mild stress (CUMS) on serotonin signaling pathways and 5-HT receptor subtypes. This divergence may rely on differences in protocols, methods, and studied pathways. Thus, the aim of this systematic review was to weigh the currently available findings regarding serotonin receptor changes in animal models of CUMS. Overall, our meta-analysis results showed the association of altered expression of 5-HT1A receptors in the frontal cortex and 5-HT2A receptors both in the whole cortex and the hypothalamus of rats following CUMS. Moreover, by using a qualitative-structured analysis and the application of risk-of-bias tools, we identified possible sources of data variation between the studied literature, which should be taken into account in future animal studies of chronic-stress induced depression.
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