Document Detail


Dynamic determination and possible mechanism of amino acid transmitter release from rat spinal dorsal horn induced by the venom and a neurotoxin (BmK I) of scorpion Buthus martensi Karsch.
MedLine Citation:
PMID:  12121809     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In the present communication, we determined the dynamic release of amino acid transmitters from spinal dorsal horn induced by scorpion Buthus martensi Karsch (BmK) venom and a neurotoxin (BmK I). The results found that glutamate and aspartate release could be evoked significantly within the initial 30 min with the applied doses of either 0.05 and 0.01 mg BmK venom or 0.01 and 0.002 mg BmK I. However, gamma-aminobutyric acid (GABA) release could be largely evoked during the second 30 min by the venom, but not by BmK I. The result suggested that nociceptive afferent fibers could be activated to induce excitatory amino acid release from spinal dorsal horn by nociceptive factors such as BmK I, but the delayed release of GABA might be attributed to the modulating role of some antinociceptive components in the venom.
Authors:
Xu-Ying Zhang; Jian-Wei Zhang; Bing Chen; Zhan-Tao Bai; Jun Shen; Yong-Hua Ji
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Brain research bulletin     Volume:  58     ISSN:  0361-9230     ISO Abbreviation:  Brain Res. Bull.     Publication Date:  2002 May 
Date Detail:
Created Date:  2002-07-17     Completed Date:  2002-10-23     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7605818     Medline TA:  Brain Res Bull     Country:  United States    
Other Details:
Languages:  eng     Pagination:  27-31     Citation Subset:  IM    
Copyright Information:
Copyright 2002 Elsevier Science Inc.
Affiliation:
Institute of Physiology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, PR China.
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MeSH Terms
Descriptor/Qualifier:
Animals
Aspartic Acid / metabolism
Glutamic Acid / metabolism
Male
Microdialysis
Neurotransmitter Agents / metabolism*
Nociceptors / drug effects*,  metabolism*
Pain / chemically induced,  metabolism
Posterior Horn Cells / metabolism*
Rats
Rats, Sprague-Dawley
Scorpion Venoms / pharmacology*
gamma-Aminobutyric Acid / metabolism
Chemical
Reg. No./Substance:
0/Neurotransmitter Agents; 0/Scorpion Venoms; 0/makatoxin I; 56-12-2/gamma-Aminobutyric Acid; 56-84-8/Aspartic Acid; 56-86-0/Glutamic Acid

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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