Related Experiment Video
Updated: Mar 16, 2026

Hypothalamic Kisspeptin Neurons as a Target for Whole-Cell Patch-Clamp Recordings
Published on: March 17, 2023
High-frequency stimulation-induced peptide release synchronizes arcuate kisspeptin neurons and excites GnRH neurons
Jian Qiu1, Casey C Nestor1, Chunguang Zhang1
1Department of Physiology and Pharmacology, Oregon Health and Science University, Portland, United States.
Abstract:
Kisspeptin (Kiss1) and neurokinin B (NKB) neurocircuits are essential for pubertal development and fertility. Kisspeptin neurons in the hypothalamic arcuate nucleus (Kiss1(ARH)) co-express Kiss1, NKB, dynorphin and glutamate and are postulated to provide an episodic, excitatory drive to gonadotropin-releasing hormone 1 (GnRH) neurons, the synaptic mechanisms of which are unknown. We characterized the cellular basis for synchronized Kiss1(ARH) neuronal activity using optogenetics, whole-cell electrophysiology, molecular pharmacology and single cell RT-PCR in mice. High-frequency photostimulation of Kiss1(ARH) neurons evoked local release of excitatory (NKB) and inhibitory (dynorphin) neuropeptides, which were found to synchronize the Kiss1(ARH) neuronal firing. The light-evoked synchronous activity caused robust excitation of GnRH neurons by a synaptic mechanism that also involved glutamatergic input to preoptic Kiss1 neurons from Kiss1(ARH) neurons. We propose that Kiss1(ARH) neurons play a dual role of driving episodic secretion of GnRH through the differential release of peptide and amino acid neurotransmitters to coordinate reproductive function.
More Related Videos
08:56Author Spotlight: Automated Infusion and Blood Sampling for Precise Hormonal Analysis in Conscious Mice
Published on: August 25, 2023
09:30Dual Somatic Recordings from Gonadotropin-Releasing Hormone GnRH Neurons Identified by Green Fluorescent Protein GFP in Hypothalamic Slices
Published on: February 23, 2010
Related Concept Videos
Regulation of Food Intake
G-Protein Gated Ion Channels
Sensory...
GPCRs Regulate Adenylyl Cylase Activity
Hormonal Regulation
GPCR Desensitization
Intestinal Phase of Digestion
The arrival of the chyme in the small intestine distends the duodenum, which triggers the enterogastric reflex. This distension...