Preoptic BRS3 neurons increase body temperature and heart rate via multiple pathways.
Preoptic BRS3 neurons increase body temperature and heart rate via multiple pathways.
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DOI:
10.1016/j.cmet.2021.05.001
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发表时间:
2021-07-06
期刊:
影响因子:
29
通讯作者:
Reitman ML
中科院分区:
文献类型:
--
作者:
Piñol RA;Mogul AS;Hadley CK;Saha A;Li C;Škop V;Province HS;Xiao C;Gavrilova O;Krashes MJ;Reitman ML
The preoptic area (POA) is a key brain region for regulation of body temperature (Tb), dictating thermogenic, cardiovascular, and behavioral responses that control Tb. Previously characterized POA neuronal populations all reduced Tb when activated. Using mice, we now identify POA neurons expressing bombesin-like receptor 3 (POABRS3) as a population whose activation increased Tb; inversely, acute inhibition of these neurons reduced Tb. POABRS3 neurons that project to either the paraventricular nucleus of the hypothalamus or the dorsomedial hypothalamus increased Tb, heart rate, and blood pressure via the sympathetic nervous system. Long-term inactivation of POABRS3 neurons caused increased Tb variability, overshooting both increases and decreases in Tb set point, with RNA expression profiles suggesting multiple types of POABRS3 neurons. Thus, POABRS3 neuronal populations regulate Tb and heart rate, contribute to cold-defense, and fine-tune feedback control of Tb. These findings advance understanding of homeothermy, a defining feature of mammalian biology. Previously identified preoptic area neurons reduce body temperature when activated. Piñol et al. report that bombesin-like receptor 3-expressing preoptic (POABRS3) neurons increase temperature when activated, indicating a role in defense from the cold. Multiple POABRS3 populations exist. Additionally, POABRS3 neurons fine-tune feedback control of body temperature and regulate heart rate.
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