Injecting a chemical into the brain of mice makes certain brain cells active and raises their body temperature, even if they’re overweight.
Scientific Claim
Intracerebroventricular injection of ADPR increases c-Fos expression in arcuate nucleus POMC neurons and elevates both interscapular brown adipose tissue (BAT) and core body temperature in mice fed either normal or high-fat diets, with temperature increases of approximately 1.1–1.3°C.
Original Statement
“i.c.v. injection of ADPR increased the expression of c-Fos in POMC neurons; ... i.c.v. injection of ADPR significantly increased both BAT (from 36.4 ± 0.1 °C to 37.5 ± 0.1 °C) and core body temperature (from 36.2 ± 0.1 °C to 37.5 ± 0.1 °C).”
Evidence Quality Assessment
Claim Status
appropriately stated
Study Design Support
Design supports claim
Appropriate Language Strength
definitive
Can make definitive causal claims
Assessment Explanation
The study directly measured temperature and c-Fos changes after ADPR administration. The claim reports observed correlations without asserting causal mechanisms beyond the data.
Evidence from Studies
Supporting (1)
The potential role of hypothalamic POMCTRPM2 in interscapular BAT thermogenesis
The study shows that injecting a specific chemical into the brain of mice turns on certain brain cells that make the body burn more energy and get warmer, whether the mice ate regular food or fatty food.