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Updated: Jul 7, 2025

Studying the Hypothalamic Insulin Signal to Peripheral Glucose Intolerance with a Continuous Drug Infusion System into the Mouse Brain
Published on: January 4, 2018
Glucose-dependent insulinotropic polypeptide receptor systems in the hypothalamus and the brainstem regulate feeding
Toshihiko Yada1,2,3
1Division of Integrative Physiology, Kansai Electric Power Medical Research Institute, Kyoto, Japan.
Abstract:
The report by Adriaenssens et al. in JCI Insight 22 May 2023 explored the role and property of the neurons that express glucose-dependent insulinotropic polypeptide receptor (GIPR) in the brainstem and hypothalamus. The chemogenetic activation of the brainstem GIPR neurons and that of the hypothalamic GIPR neurons showed different feeding and behavior responses. The brainstem GIPR neurons projected to the paraventricular hypothalamus and lateral parabrachial nucleus. Fluorescent-labeled, stabilized peptide GIPR agonist (GIPRA), peripherally injected, localized to the area postrema, nucleus tractus solitarius, median eminence and arcuate hypothalamus. This report showed the role of brainstem GIPR neurons in receiving GIPRA to drive the neural circuit to reduce feeding and bodyweight. In this commentary, distinct and possible cooperative roles of the hypothalamic and the brainstem GIPR pathways will also be discussed.
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