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Acute physical exercise increases PI3K‐p110α protein content in the hypothalamus of obese mice
Author(s) -
Gaspar Rafael C.,
Nakandakari Susana C. B. R.,
Muñoz Vitor R.,
Vieira Renan F. L.,
Silva Adelino S. R.,
Cintra Dennys E.,
Moura Leandro P.,
Ropelle Eduardo R.,
Pauli José Rodrigo
Publication year - 2021
Publication title -
journal of anatomy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.932
H-Index - 118
eISSN - 1469-7580
pISSN - 0021-8782
DOI - 10.1111/joa.13342
Subject(s) - leptin , hypothalamus , endocrinology , medicine , socs3 , energy homeostasis , adipokine , insulin , pi3k/akt/mtor pathway , biology , obesity , signal transduction , microbiology and biotechnology , suppressor , cancer
The anatomy of the hypothalamus includes many nuclei and a complex network of neurocircuits. In this context, some hypothalamic nuclei reside closer to the blood‐brain barrier, allowing communication with the peripheral organs through some molecules, such as leptin. Leptin is considered the main adipokine for energy homeostasis control. Furthermore, leptin signalling in the hypothalamus can communicate with insulin signalling through the activation of phosphoinositide 3‐kinase (PI3k). Previous data suggest that isoforms of PI3k are necessary to mediate insulin action in the hypothalamus. However, obese animals show impairment in the central signalling of these hormones. Thus, in the current study, we evaluated the role of acute exercise in the leptin and insulin pathways in the hypothalamus, as well as in food intake control in obese mice. Although acute physical exercise was not able to modulate leptin signalling, this protocol suppressed the increase in the suppressor of cytokine signalling 3 (SOCS3) protein levels. In addition, acute exercise increased the content of PI3k‐p110α protein in the hypothalamus. The exercised animals showed a strong tendency to reduction in cumulative food intake. For the first time, our results indicate physical exercise can increase PI3k‐p110α protein content in the hypothalamus of obese mice and regulate food intake.