ABSTRACT
Objective To study the influence of infection again to hepatifis B sufferer get disease turn into by human cytomegalovirus(HCMV)afterbirth incubates-activate. Methods The serum levels of HCMV-DNA and HBV-DNA were determined by real-time fluorescent ration PCR, and the HCMV-IgG, IgM level were determined by ELISA in 162 serums from hepatitis patients HBsAg reported the masculine. Results The masculine rate of HCMV-DNA and HCMV-IgM, and the mean vahe of HCMV-DNA ration were much consilient: controls＜hepatitis B sufferer＜hepatocirrhosis＜liver cancer. The masculine rate of HCMV-DNA and HCMV-IgM in hepatitis B HBV-DNA positive patients was higher in hepatitis B HBV-DNA negative patients(P＜0.01). Conclusion Under the multiple infection appearance, it has the certain association with connection which HCMV afterbirth incubates-activate the infection again to hepatitis B get disease turn into.
ABSTRACT
AIM To study the effect and mechanism of sildenafil on rabbit corpus cavernosum in vitro . METHOD Rabbit corpus cavernosum(RCC) segments were incubated with various concentrations of sildenafil. The formation of cGMP was stimulated with 1 ?mol?L -1 sodium nitroprusside(SNP), and the cyclic GMP concentration was measured by radioimmunoassy technology. In the organ bath, strips of RCC were precontracted with 10 ?mol?L -1 phenylephrine. Sildenafil were added with increasing doses gradually, graded relaxations were induced using various concentrations of sodium nitroprusside (SNP) and methacholine (MCH). RESULT In the presence of SNP, the cGMP concentration was increased in rabbit penile tissue, the increase of cGMP was greater when sildenafil was added. Sildenafil 10、100 nmol L -1 、1 ?mol?L -1 dose-dependently relaxed RCC strips. CONCLUSION Sildenafil increases cGMP concentration in RCC is attributed to the augmentation of NO/cGMP pathway, and the accumulation of cGMP improves the relaxation of RCC.