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Accelerated BDNF expression in visceral white adipose tissues following high‐fat diet feeding in mice

Year: 2024

Type: article

Abstract: Brain-derived neurotrophic factor (BDNF) is expressed in the white adipose tissues (WATs), and the expression increases during high-fat diet (HFD) feeding, implicating its role in obesity. Here, we focused on BDNF expression in epididymal WAT (eWAT), a visceral adipose tissue, in mice. During 2 weeks of HFD feeding, Bdnf mRNA expression in eWAT slightly increased, but a robust increase was observed after 8 weeks of HFD feeding. This upregulation of Bdnf mRNA was correlated with significant induction of hypoxia-inducible factor 1α (Hif1α) and platelet-derived growth factor subunit B (Pdgfb) mRNA in eWAT following 8 weeks of HFD feeding. Furthermore, the increased expression of the M1 macrophage markers was strongly correlated with the elevation of Bdnf mRNA in the eWAT. Notably, 8 weeks of HFD feeding significantly elevated Tnfα mRNA expression in eWAT, while no such induction was observed in inguinal WAT (iWAT). In contrast, the expression of Adipoq (adiponectin), implicated in improved insulin sensitivity and anti-inflammatory effects, was significantly upregulated in iWAT, but not in eWAT. Thus, our study may show the role of BDNF in eWAT in obesity models, potentially contributing to the pathological state of visceral adipose tissues.

Source: Genes to Cells

DOI: 10.1111/gtc.13162

Authors: Kurumi Sakata, Mamoru Fukuchi

Institution: Takasaki University of Health and Welfare

Language: English

Topic: Adipokines, Inflammation, and Metabolic Diseases

Subfield: Epidemiology

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: bronze

Funder: Japan Society for the Promotion of Science