Journal
BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY
Volume -, Issue -, Pages -Publisher
OXFORD UNIV PRESS
DOI: 10.1093/bbb/zbad163
Keywords
cinnamaldehyde; TRPA1; body temperature; thermogenesis; vagus nerve
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Cinnamaldehyde can affect body temperature through TRPA1 activation, with the vagus nerve having a minor influence.
The transient receptor potential (TRP) channel family, including TRPA1, is known to be involved in temperature sensing and response. Previous studies have shown that intragastric administration of cinnamaldehyde (a typical TRPA1 agonist) can change body temperature, but the role of TRPA1 in this response is not clear. In this study, we found that intragastric administration of cinnamaldehyde increased in the intrascapular brown adipose tissue (IBAT) and rectal temperatures. However, this effect was not observed in TRPA1 knockout mice, suggesting that TRPA1 is involved in these temperature changes. Intravenous cinnamaldehyde also increased IBAT and rectal temperatures, only in the presence of TRPA1. We also explored the contribution of the vagus nerve to these temperature changes and found that it played a limited role. These results suggest that cinnamaldehyde can affect body temperature through TRPA1 activation, with the vagus nerve having a minor influence. Graphical Abstract Intragastric administration of cinnamaldehyde induced changes in body temperature in wildetype (WT) mice but not in TRPA1 KO mice.
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