1. |
- Frey, Sharon, et al.
(författare)
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Interference of antibody production to hepatitis B surface antigen in a combination hepatitis A/hepatitis B vaccine
- 1999
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Ingår i: Journal of Infectious Diseases. - : Oxford University Press (OUP). - 0022-1899 .- 1537-6613. ; 180:6, s. 2018-2022
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Tidskriftsartikel (refereegranskat)abstract
- A randomized trial comparing 3 manufacturing consistency lots of a combination hepatitis A/hepatitis B vaccine to each other and to hepatitis A vaccine and hepatitis B vaccine given separately and concurrently was done to evaluate safety, tolerability, and immunogenicity. Healthy volunteers >/=11 years of age were divided into 4 groups. Each of 3 groups received a separate consistency lot of the combination vaccine, and 1 group received separate but concurrent injections of hepatitis A and hepatitis B vaccines. Injections were given at weeks 0 and 24. The combination vaccine was generally well tolerated. The hepatitis A portion of the combination vaccine produced clinically acceptable high seropositivity rates 4 and 52 weeks after the first injection. The hepatitis B portion of the vaccine did not produce clinically acceptable seropositivity rates 4 weeks after the second injection. Lack of antibody production may be attributed, at least in part, to immunologic interference.
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2. |
- Raffelsberger, Jens, et al.
(författare)
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Pharmacodynamic interaction between monodesbutyl-benflumetol and artemisinin as well as proguanil in Plasmodium falciparum in vitro
- 2008
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Ingår i: Wiener Klinische Wochenschrift. - : Springer. - 0043-5325 .- 1613-7671. ; 120:4, s. 90-94
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Tidskriftsartikel (refereegranskat)abstract
- The sensitivity of Plasmodium falciparum against artemisinin, monodebutyl-benflumetol (DBB) and a 1:3 m/m combination of both compounds was assessed in 51 fresh parasite isolates. Although a comparison between fully inhibitory concentrations (GMCOC) of artemisinin alone (63.33 nM), DBB alone (50.15 nM) and the combination (23.92 nM) indicated significant synergism between artemisinin and DBB, this was less evident when comparing the log-probit regressions. Moreover, the geometric mean values of the fractional inhibitory concentrations (SFIC) showed a rising tendency with increasing EC level. In a study comprising 24 fresh isolates of P. falciparum, the interaction between DBB and proguanil was explored with a 3:1 m/m combination of both compounds. Proguanil alone showed weak blood schizontocidal activity. The log-probit regressions indicated higher activity of the combination as compared to DBB alone. The SFIC values indicated moderate synergism between DBB and proguanil that could be an advantage in an eventual therapeutic and prophylactic use of DBB. © 2008 Springer-Verlag.
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