Effects of temperature on the burst opening of voltage-dependent K+ channels in hypothalamic neurons.

Author: Chun-Qing CAI ¹ ; Fei ZOU
Author Information

1. Department of Thermal Environmental Medicine, First Military Medical University, Guangdong Guangzhou 510515, China.
Publication Type:Journal Article
MeSH: Animals; Hypothalamus; cytology; Neurons; physiology; Patch-Clamp Techniques; Potassium Channels, Voltage-Gated; physiology; Rats; Rats, Sprague-Dawley; Temperature
From: Chinese Journal of Applied Physiology 2002;18(2):105-108
CountryChina
Language:Chinese
Abstract:
AIM AND METHODSTo observe the effect of temperature on burst opening of voltage-dependent K+ channels(Kv) in hypothalamic neurons by cell-attached mode of patch-clamp technique.
RESULTSWith temperature raising, the number of burst opening increased, so did its average burst duration. B1 and B2 raised from 1.5 ms and 6.6 ms at 32 degrees C to 8.1 ms and 83.2 ms (P < 0.05) respectively while the open number of inter-burst, from 1-2 to 8 (P < 0.05) too. Instead of SB, CB displayed predominantly a kind of burst opening.
CONCLUSIONMore burst opening of Kv in hypothalamic neurons with temperature raising, this was benefited to the body temperature regulation of neurons on hypothalamus.