Chronic early life stress alters the neuroimmune profile and functioning of the developing zebrafish gut

Autor: Christina L. Graves, Erik Norloff, Darius Thompson, Oksana Kosyk, Yingning Sang, Angela Chen, Anthony S. Zannas, Shannon M. Wallet
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Brain, Behavior, & Immunity - Health, Vol 31, Iss , Pp 100655- (2023)
Druh dokumentu: article
ISSN: 2666-3546
DOI: 10.1016/j.bbih.2023.100655
Popis: Chronic early life stress (ELS) potently impacts the developing central nervous and immune systems and is associated with the onset of gastrointestinal disease in humans. Though the gut-brain axis is appreciated to be a major target of the stress response, the underlying mechanisms linking ELS to gut dysfunction later in life is incompletely understood. Zebrafish are a powerful model validated for stress research and have emerged as an important tool in delineating neuroimmune mechanisms in the developing gut. Here, we developed a novel model of ELS and utilized a comparative transcriptomics approach to assess how chronic ELS modulated expression of neuroimmune genes in the developing gut and brain. Zebrafish exposed to ELS throughout larval development exhibited anxiety-like behavior and altered expression of neuroimmune genes in a time- and tissue-dependent manner. Further, the altered gut neuroimmune profile, which included increased expression of genes associated with neuronal modulation, correlated with a reduction in enteric neuronal density and delayed gut transit. Together, these findings provide insights into the mechanisms linking ELS with gastrointestinal dysfunction and highlight the zebrafish model organism as a valuable tool in uncovering how “the body keeps the score.”
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