Document Detail


Aggravation of Cyclophosphamide-Induced Acute Neurological Disorders under Conditions of Artificial Acidification of Chyme in Rats.
MedLine Citation:
PMID:  23113304     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
The effect of artificial acidification of the intestinal content on neurological manifestations of acute severe cyclophosphamide intoxication was studied in rats. The animals were gavaged with 20 ml/kg sulfuric (0.05 M), hydrochloric, boric, or lactic acids (0.1 M) 3 h before intraperitoneal injections of the cytostatic in doses of 0, 200, 600, or 1000 mg/kg. The decrease in pH (by.0) and ammonia-producing activity of the cecal chyme developed within 3 h after administration of acids. Cyclophosphamide caused hyperammonemia; glutamine/ammonia and urea/ammonia ratios in the blood decreased. These changes augmented after administration of acids (boric acid produced maximum and lactic acid minimum effects). Acid treatment resulted in greatest elevation of ammonia level in the portal venous blood and a lesser elevation in the vena cava posterior blood. Acid treatment promoted manifestation of cyclophosphamide neurotoxic effect and animal death. Hence, acidification of the chyme inhibited the formation of ammonia in it, while ammonia release from the gastrointestinal tract into the blood increased; the treatment augmented hyperammonemia and aggravated the neurological manifestations of cyclophosphamide intoxication.
Authors:
T V Schaefer; V L Rejuniuk; V N Malakhovsky; Ju Ju Ivnitsky
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Bulletin of experimental biology and medicine     Volume:  153     ISSN:  1573-8221     ISO Abbreviation:  Bull. Exp. Biol. Med.     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-31     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0372557     Medline TA:  Bull Exp Biol Med     Country:  United States    
Other Details:
Languages:  eng; rus     Pagination:  862-5     Citation Subset:  IM    
Affiliation:
Institute of Toxicology, Federal Biomedical Agency of Russia, St. Petersburg, Russia. vladton@mail.ru.
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