background tenofovir disoproxil fumarate (tdf) is a new effective treatment option for patients with chronic hepatitis b (chb). objectives to evaluate tdf efficacy in nucleos(t)ide analogues (nas)-naive iranian patients with chb. patients and methods the na-naive patients received tdf for at least six months. the primary endpoint was the proportion of patients achieving a complete virological r...

The synthesis of a pyrazolo[1,5-a]-1,3,5-triazine C-nucleoside (dA(PT)), designed to form two hydrogen bonds with a complementary dT residue, is reported. Oligonucleotides including this dA nucleoside analogue possess base-pairing properties similar to those of the parent oligonucleotide. This dA nucleoside analogue is more resistant to acid-catalyzed hydrolysis than dA.

There are currently six approved nucleoside analogue reverse transcriptase inhibitors. Data are available from clinical trials in human pregnancy for zidovudine and lamivudine, while didanosine and stavudine are under study. Zalcitabine and abacavir have not been studied in pregnant women. Tenofovir disoproxil fumarate is the first acyclic nucleotide analogue reverse transcriptase inhibitor. Th...

The combination therapy with hepatitis B immunoglobulin (HBIG) and nucleoside analogue is well tolerated for the hepatitis B recipients after liver transplantation, but its cost is an important problem in these days. Here we report the efficacy of nucleoside analogue therapy following one-year course of HBIG plus nucleoside analogue after living donor liver transplantation (LDLT). Out of 103 LD...

PURPOSE The effectiveness of nucleoside analogue on patients with chronic hepatitis B-associated liver failure is still controversial. To address this issue, we did a review of the literatures and analyzed the data with emphasis on the survival and reduction in serum HBV DNA level. METHODS We searched 11 randomized controlled trials that included 654 patients with chronic hepatitis B-associat...

Novel 2'(β)-methyl-5'-deoxyapiose purine phosphonic acid analogues were designed and synthesized from 2-propanone1,3-diacetate. Condensation successfully proceeded from a glycosyl donor 9 under Vorbrüggen conditions. Condensation of aldehyde 14 with Wittig reagent [(diethoxyphosphinyl)methylidene] triphenylphosphorane gave the desired nucleoside phosphonate analogues 15. Ammonolysis and hydroly...

DNA labeling in vivo using nucleoside analogues is a current experimental approach to determine cell proliferation rates in cell cultures and tissues. It has also been successfully used to localize adult stem cell niches through the identification of nucleoside label-retaining cells (LRC) in long-term experiments. A major hindrance of this methodology relies on the selection of adequate procedu...