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| Content Provider | PubMed Central |
|---|---|
| Author | Ferrara, E. A. Oishi, J. S. Wannemacher, R. W. Stephen, E. L. |
| Abstract | Ribavirin has been shown to have broad-spectrum antiviral. To study its tissue distribution and disappearance rate, a single dose of 10 mg/kg which contained 10 microCi of [14C]ribavirin was injected intravenously into rhesus monkeys and intramuscularly into monkeys and rats. Except for peak plasma concentrations and the initial phases of the plasma disappearance and urine excretion curves, no significant difference was observed between plasma, tissue, or urine values for intramuscularly or intravenously injected monkeys. Plasma disappearance curves were triphasic; plasma concentrations of ribavirin were similar for both monkeys and rats. Rats excreted ribavirin in the urine more rapidly and to a greater extent (82% excreted in 24 h) than did monkeys (60% excreted in 72 h). In the rat, only 3% of the injected [14C]ribavirin was detected in expired CO2. Therefore, for both species, urine was the major route for the elimination of labeled ribavirin and its metabolites from the body. In monkeys, the amount of parent drug in blood cells increased through 48 h and remained stable for 72 h, whereas in rats, ribavirin decreased at a rate similar to the plasma disappearance curve. Concentrations of ribavirin at 8 h were consistently higher in monkeys than in rats for all tissues except the brain. Thus, these differences in blood cellular components and organ content and in urine excretion suggested that there was greater tissue retention of ribavirin in monkeys than in rats. |
| Starting Page | 1042 |
| File Format | |
| ISSN | 10986596 |
| e-ISSN | 10986596 |
| Journal | Antimicrobial Agents and Chemotherapy |
| Issue Number | 6 |
| Volume Number | 19 |
| Language | English |
| Publisher Date | 1981-06-01 |
| Access Restriction | Open |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Infectious Diseases Pharmacology Pharmacology (medical) |
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