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Titolo:
PHARMACOKINETICS AND TISSUE DISTRIBUTION IN RATS OF AN OLIGODEOXYNUCLEOTIDE PHOSPHOROTHIOATE (GEM-91) DEVELOPED AS A THERAPEUTIC AGENT FOR HUMAN-IMMUNODEFICIENCY-VIRUS TYPE-1
Autore:
ZHANG RW; DIASIO RB; LU ZH; LIU TP; JIANG ZW; GALBRAITH WM; AGRAWAL S;
Indirizzi:
UNIV ALABAMA,DEPT PHARMACOL & TOXICOL,VOLKER HALL ROOM 101,BOX 600 BIRMINGHAM AL 35294 UNIV ALABAMA,DIV CLIN PHARMACOL BIRMINGHAM AL 35294 UNIV ALABAMA,CTR COMPREHENS CANC BIRMINGHAM AL 35294 APD CO ARLINGTON VA 22209 HYBRIDON INC WORCESTER MA 01605
Titolo Testata:
Biochemical pharmacology
fascicolo: 7, volume: 49, anno: 1995,
pagine: 929 - 939
SICI:
0006-2952(1995)49:7<929:PATDIR>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHRONICALLY INFECTED-CELLS; ANTISENSE OLIGODEOXYNUCLEOTIDES; REPLICATION; INHIBITION; OLIGONUCLEOTIDES; MICE; 2-FLUORO-BETA-ALANINE; BIODISTRIBUTION; 5-FLUOROURACIL; EXPRESSION;
Keywords:
ANTISENSE OLIGODEOXYNUCLEOTIDE PHOSPHOROTHIOATE; GEM 91; HIV-1; PHARMACOKINETICS; METABOLISM; TISSUE DISPOSITION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
27
Recensione:
Indirizzi per estratti:
Citazione:
R.W. Zhang et al., "PHARMACOKINETICS AND TISSUE DISTRIBUTION IN RATS OF AN OLIGODEOXYNUCLEOTIDE PHOSPHOROTHIOATE (GEM-91) DEVELOPED AS A THERAPEUTIC AGENT FOR HUMAN-IMMUNODEFICIENCY-VIRUS TYPE-1", Biochemical pharmacology, 49(7), 1995, pp. 929-939

Abstract

An antisense oligodeoxynucleotide phosphorothioate, namely gene expression modulator 91 (GEM 91), has been demonstrated to have significantanti-human immunodeficiency virus activity in various tissue culture models. The present study was undertaken to determine the pharmacokinetics and tissue distribution of GEM 91 in rats following i.v. bolus administration of S-35-radiolabeled GEM 91. Plasma disappearance curves for GEM 91-derived radioactivity could be described by the sum of two exponentials, with half-lives (mean +/- SEM) of 0.95 (+/- 0.07) and 47.57 (+/- 14.48) hr. Urinary excretion represented the major pathway ofelimination of GEM 91, with 26.67 +/- 6.46% (mean +/- SD) of the administered dose excreted within 24 hr and 58.12 +/- 4.36% over 240 hr after GEM 91 administration. Fecal excretion was a minor pathway of elimination of GEM 91 with 1.4 +/- 0.62% (mean +/- SD) of the administereddose excreted over 24 hr and 8.54 +/- 0.64% over 240 hr. A wide tissue distribution of GEM 91 was observed. During the initial 30 min, the highest levels of tissue radioactivity were found in the kidney, liver, spleen, lungs, and heart. Radioactivity was retained over longer time periods in the kidneys, liver, heart, and intestine. Analyses of theextracted radioactivities from plasma, kidney, and liver by gel electrophoresis showed the presence of both intact GEM 91 and degradative products with smaller molecular weights. Radioactivity in urine was found to be degradative metabolites of GEM 91. Based on the experimental data, pharmacokinetic parameters for GEM 91 in each tissue and biological fluids were calculated using computer-based two-compartmental i.v.bolus or absorption models. This study is important not only in providing the basis for future studies of GEM 91 in humans, but also in understanding the pharmacology and toxicology of antisense oligodeoxynucleotide phosphorothioates, in general.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/09/20 alle ore 02:01:36