objective: gbv-c is a virus transmissible via blood transfusion and sexual routes. because of the shared transmission routes in gbv-c and hepatitis b virus (hbv) we have attempted to detect gbv-c in hbsag-positive patients using the more sensitive semi-nested pcr. we used restriction fragment length polymorphism (rflp) to determine genotype. methods: a total of 100 serum samples were collected...

The serum concentrations of squamous cell carcinoma antigen (SCC-Ag) obtained from 124 surgically treated primary non-small cell lung cancer patients, including 75 adenocarcinomas (AD) and 49 squamous cell carcinomas (SQ), were studied. The changes in the SCC-Ag concentration, which were obtained before and one month after surgery, were analyzed. The 5-year survival rate of the patients with AD...

Hepatitis B core antigen (HBc Ag) and hepatitis B surface antigen (HBs Ag) were detected in the liver tissue of a patient with chronic aggressive hepatitis by the immunofluorescent complement technique. The presence of anti-HBc was examined by the same method in 67 human sera previously tested for HBs Ag, anti-HBs and s-GPT levels. HBc Ag was localized mainly in the nucleus and sometimes in the...

introduction: tuberculosis (tb) caused by mycobacterium tuberculosis remains a major worldwide health problem. the only tb vaccine currently available is anattenuated strain of mycobacterium bovis termed bacillus calmette -guerin (bcg).the efficacy of bcg remains controversial. mycobacterium secretory proteins are generally considered important antigens for protection against tb. a major protei...

chitosan (chito) as a biopolymer with high antibacterial, biocompatibility and biodegradability and polyaniline (pani) as a conductive polymer and silver (ag) nanoparticles to enhance antibacterial property were used to prepare polyanilin-chitosan-silver (pani-chito-ag) nanocomposites. the synthesis of panichito composite and pani-chito-ag nanocomposite was performed through aniline polymerizat...

As a result of growing applications of manufactured nanoparticles, there is an increasing concern aboutpossible side effects of exposure to these materials on human and environment. Nanosilver (n-Ag) has foundwide use in medical applications including development of silver-based dressings and silver-coated medicaldevices. However, toxicity of these particles clue to their dermal use has not bee...

To evaluate whether a new enzyme immunoassay developed for the simultaneous detection of hepatitis C virus (HCV) core antigen (Ag) and anti-HCV antibodies (anti-HCV Ab) (Monolisa HCV Ag/Ab ULTRA; Bio-Rad) could improve the early detection of HCV infection, we compared its sensitivity to that of anti-HCV, HCV core Ag, and HCV RNA assays. The populations studied included 12 blood donor samples po...

An outbreak of hepatitis-associated-antigen-(HB Ag)-positive hepatitis in a hospital unit for the care of male patients with pulmonary tuberculosis is described. Sixty-four patients were studied of whom 37 were HB Ag positive. Hepatitis developed in at least 20 and was icteric in 11. The illness was mild, without fatality due to hepatitis and persistent jaundice did not occur. A carrier state d...