ABSTRACT
To investigate the possible effects of cyclosporine A(CsA) on the T cell dependent liver injury induced by Concanavalin A (Con A) in Kunming mice,25 Kunming mice were randomly divided into five groups. Con A (doses of 10mg/kg, 20mg/kg and 40mg/kg) was administered via the tail vein to duplicate the liver injury as the ConA group; CsA subcutaneously injected twice at doses of 130mg/kg 15 hours and 1 hour respectively before ConA challenge constitutes the CsA group. Phosphate buffered saline (PBS) only served as the control group. Blood samples for tumor necrosis factor alpha (TNF ?) and alanine aminotransferase (ALT) measurement were obtained at 8 hours after ConA administration. Histopathological examination was also performed for liver tissue. The results showed that ConA induced specific liver injury in Kunming mice was successfully duplicated. CsA markedly protected the mice from Con A induced liver injury by comparing the levels of serum ALT(44?16U/L vs 341?52U/L, P
ABSTRACT
Hepatitis C viral RNA in sera from 10 patients with post-transfusion hepatitis in Shanghai (China) were amplified By the nested PCR with primer sets deduced from the American prototype HCV RNA 5' -untranslated region. Eight of 10 cases (80%) were positive. And manipulations of PCR were simplified by combination of reverse transcription step and the first round PCR reaction. Our results indirectly proved that 5-untranslated region of HCV RNA of Shanghai showed a high degree of comservation and homology compared with isolates from some regions in the world.