Document Detail


Effects of diesel exhaust particles on blood pressure in rats.
MedLine Citation:
PMID:  11482798     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The effects of diesel exhaust particles (DEP) on pulmonary functions and consequent diseases are well known, but there have been few reports concerning involvement of the cardiovascular system. In order to assess a direct action of DEP on cardiac tissue, the effects on blood pressure of intravenous administration of 12 or 120 mg/kg DEP to anesthetized rats were studied for a 15-min period. DEP (120 mg/kg) significantly lowered blood pressure for 25 s with no signs of arrhythmia or mortality, a phenomenon seen in guinea pigs. After 25 s blood pressure gradually returned to control levels and was maintained for 15 min. The 12-mg/kg DEP concentration did not markedly affect rat blood pressure. Pretreatment with atropine (24 mg/kg) blocked the DEP-induced fall in blood pressure, while pretreatment with propranolol (48 mg/kg) proved ineffective against DEP, suggesting involvement of the parasympathetic system. Data show that the rat is less sensitive to DEP-induced effects on blood pressure and may be a poor model to reflect cardiovascular changes.
Authors:
N Toda; N Tsukue; H Tsubone; M Sagai; J Birumachi; A K Suzuki
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of toxicology and environmental health. Part A     Volume:  63     ISSN:  1528-7394     ISO Abbreviation:  J. Toxicol. Environ. Health Part A     Publication Date:  2001 Jul 
Date Detail:
Created Date:  2001-08-02     Completed Date:  2001-08-09     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  100960995     Medline TA:  J Toxicol Environ Health A     Country:  England    
Other Details:
Languages:  eng     Pagination:  429-35     Citation Subset:  IM    
Affiliation:
Graduate School of Agriculture and Life Sciences, University of Tokyo, Japan.
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MeSH Terms
Descriptor/Qualifier:
Adrenergic beta-Antagonists / pharmacology
Animals
Atropine / pharmacology
Autonomic Nervous System / drug effects*
Blood Pressure / drug effects*
Dose-Response Relationship, Drug
Injections, Intravenous
Male
Parasympatholytics / pharmacology
Particle Size
Propranolol / pharmacology
Rats
Rats, Wistar
Vehicle Emissions / toxicity*
Chemical
Reg. No./Substance:
0/Adrenergic beta-Antagonists; 0/Parasympatholytics; 0/Vehicle Emissions; 51-55-8/Atropine; 525-66-6/Propranolol

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


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