Maternal circadian disruption before pregnancy impairs the ovarian function of female offspring in mice

Guan, Yajie; Xu, Manlin; Zhang, Zhe; Liu, Chuan-Ming; Zhou, Jidong; Lin, Fei; Fang, Junshun; Zhang, Yang; Yue, Qiuling; Zhen, Xin; Yan, Guijun; Liu, Wenwen; Sun, Haixiang

doi:10.1016/j.scitotenv.2022.161161

Cited by 4 publications

(1 citation statement)

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“…It is reported that BDNF exerts antidepressant and prodepressant effects in different brain regions [43]. The BDNF-TrkB pathway modulated mood and was in uenced by circadian rhythms [44][45][46]. In this intricate process, the BDNF exhibited rhythmic expression patterns in the SCN and striatum.…”

Section: Discussionmentioning

confidence: 99%

Suprachiasmatic nucleus dysfunction induces anxiety- and depression-like behaviors via activating the BDNF-TrkB pathway of the striatum

Xie,

Ding

et al. 2024

Preprint

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The circadian rhythm system consists of a master clock located in the suprachiasmatic nucleus (SCN) of the hypothalamus and peripheral clocks dispersed throughout other brain areas (including striatum, Str) as well as various tissues and organs. Circadian rhythm disturbance is a major risk factor and common comorbidity for mood disorders, especially anxiety and depression. Bmal1 is one of the fundamental clock protein genes that is required to maintain circadian rhythm. Recent research has revealed a link between suprachiasmatic nucleus dysfunction and anxiety and depression, but the underlying mechanisms remain to be fully elucidated. This study aimed to investigate how circadian rhythm disturbance may lead to anxiety and depression-like behaviors. Through behavioral tests, virus tracing, molecular biology and other techniques, we found neural connection from the suprachiasmatic nucleus to the striatum. SCN lesions and Bmal1flox/flox+pAAV-hSyn-Cre-GFP (conditional knockout, cKO) mice exhibited disruptions in core body temperature rhythm, as well as anxiety- and depression-like behaviors. Importantly, these mice displayed altered expression patterns of clock protein genes and an upregulation of the Brain-Derived Neurotrophic Factor (BDNF) - Tyrosine Kinase receptor B (TrkB) signaling pathway within the striatum. Microinjection of the TrkB inhibitor ANA-12 can effectively reverse anxiety and depression-like behaviors. These findings indicate that suprachiasmatic nucleus dysfunction may contribute to the pathogenesis of anxiety and depression through upregulation of the BDNF-TrkB pathway in the striatum, potentially mediated by neural projections from the SCN. Bmal1 gene within SCN may represent a novel therapeutic target for mood disorders.

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Section: Discussionmentioning

confidence: 99%