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. 1999 Apr;43(4):972-4.
doi: 10.1128/AAC.43.4.972.

Pharmacokinetics of oral zidovudine entrapped in biodegradable nanospheres in rabbits

D P Callender  1 , N Jayaprakash, A Bell, V Petraitis, R Petraitiene, M Candelario, R Schaufele, J M Dunn, S Sei, T J Walsh, F M Balis
Affiliations

Pharmacokinetics of oral zidovudine entrapped in biodegradable nanospheres in rabbits

D P Callender et al. Antimicrob Agents Chemother. 1999 Apr.

Erratum in

  • Antimicrob Agents Chemother 1999 Dec;43(12):3046. Petratienes R [corrected to Petraitiene R]

Abstract

The pharmacokinetic profile of oral zidovudine entrapped in a 50:50 polyactide-coglycolide matrix (nanospheres) was compared to those of standard oral and parenteral zidovudine formulations in rabbits. The bioavailability of zidovudine nanospheres at 50 mg/kg of body weight was 76%, and this dose achieved prolonged exposure to zidovudine compared to standard formulations without an increase in the drug's peak concentration.

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Figures

FIG. 1
FIG. 1
Plasma ZDV concentration-time profile for rabbits receiving 10 mg/kg i.v. (○) and 10 mg/kg orally in the conventional syrup formulation (□) (A), 10 mg/kg orally in the conventional syrup formulation (○) and entrapped in nanospheres with adjuvant (□) (B), or 10 mg/kg orally in the conventional syrup formulation (○) and 50 mg/kg orally entrapped in nanospheres with adjuvant (□) and without adjuvant (■) (C). Each point represents the mean of the plasma ZDV concentrations from three animals.
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References

    1. Abu-Izza K, Tambrallo L, Lu D R. In vivo evaluation of zidovudine (AZT)-loaded ethylcellulose microspheres after oral administration in beagle dogs. J Pharm Sci. 1997;86:554–559. - PubMed
    1. Abu-Izza K A, Garcia-Contreras L, Lu D R. Preparation and evaluation of sustained release AZT-loaded microspheres: optimization of the release characteristics using response surface methodology. J Pharm Sci. 1996;85:144–149. - PubMed
    1. Acosta E P, Page L M, Fletcher C V. Clinical pharmacokinetics of zidovudine, an update. Clin Pharmacokinet. 1996;30:251–262. - PubMed
    1. Balis F M, Pizzo P A, Eddy J, Wilfert C, McKinney R, Scott G, Murphy R F, Jarosinski P F, Falloon J, Poplack D G. The pharmacokinetics of azidothymidine administered intravenously and orally in children with human immunodeficiency virus infection. J Pediatr. 1989;114:880–884. - PubMed
    1. Balis F M, Pizzo P A, Murphy R F, Eddy J, Jarosinski P F, Falloon J, Broder , Poplack D G. The pharmacokinetics of zidovudine administered by continuous infusion in children. Ann Intern Med. 1989;110:279–285. - PubMed

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