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Updated: Feb 16, 2026

Author Spotlight: Hypothalamic Neural Mechanism Insights
Published on: August 4, 2023
GHRH and IL1beta increase cytoplasmic Ca(2+) levels in cultured hypothalamic GABAergic neurons
Alok De1, Lynn Churchill, Ferenc Obal
1Department of VCAPP, Program in Neuroscience, Washington State University, PO Box 646520, Pullman, WA 99164-6520, USA.
Abstract:
GHRH and IL1beta regulate sleep via the hypothalamus. However, actions of these substances on neurons are poorly understood. In this study, we found both GHRH (100 nM) and IL1beta (1.2 pM) acutely increased cytosolic Ca(2+) in 7.6 and 4.0% of cultured hypothalamic neurons tested, respectively, and 1.2% of neurons responded to both. The neurons that responded were mostly GABAergic (96, 81, and 100% for GHRH, IL1beta, and dual-responsive neurons, respectively).
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