ATP suppresses activity in slowly adapting but not rapidly adapting mechanoreceptors in toad skin.

Abstract:

:To test the possible role of ATP in transducing or modulating touch sensation, an isolated skin-nerve preparation from the toad, Bufo marinus, perfused on the inner side, was used to examine the effects of ATP on slowly adapting (SA) and rapidly adapting (RA) mechanoreceptors, identified by ramp and hold indentation of the skin. ATP (1-50 mM) did not generate impulse activity in either SA or RA mechanoreceptors nor increase their responses to mechanical stimulation. Instead, ATP (> or =5 mM) reversibly and selectively suppressed impulse discharge from SA mechanoreceptors. Our results indicate that while ATP may modulate the responses of specific touch receptors, it is not involved in transducing touch into nerve impulses.

journal_name

Neuroreport

journal_title

Neuroreport

authors

Fallon JB,Maroto R,Hamill OP,Proske U

doi

10.1097/00001756-200208070-00019

subject

Has Abstract

pub_date

2002-08-07 00:00:00

pages

1443-6

issue

11

eissn

0959-4965

issn

1473-558X

journal_volume

13

pub_type

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