[Relationship between the preterm low birth weight infant and the periodontal pathogen bacteria in maternal saliva].

Objective: To investigate the possible relationship between the preterm and/or low birth weight (PLBW) and three anaerobic microorganisms in saliva of their mothers, including Porphyromonas gingivalis (Pg), Tannerella forsythia (Tf), Treponema Denticola (Td).

Methods: 110 retrospective cases were collected from 4 hospitals in Beijing urban and suburban areas. PLBW group included 72 subjects and NBW group included 38 subjects.

[Clinical outcomes of 283 patients of transfusion-related hepatitis C in the northern areas of China].

Objective: To investigate the natural history and clinical outcomes in a cohort of transfusion-related hepatitis C in northern areas of China. Methods The authors studied 283 patients (137 males, 146 females, mean age 45.79+/-9.

Prospective study in 142 cases of hepatitis C virus infection.

Aim: There is limited information on the natural history of HCV infection in China. We investigated the outcome of HCV infection after nine-year follow-up and the risk factors in blood donors in China in order to provide the foundation for prevention and therapy.

Methods: A total of 172 cases of HCV infection with anti-HCV positive and ALT abnormality were enrolled in the archives when was screened blood in Hebei Province in 1993.

Association of interleukin-12 p40 gene 3'-untranslated region polymorphism and outcome of HCV infection.

Aim: To investigate the effect of interleukin-12 p40 gene (IL12B) 3'-untranslated region polymorphism on the outcome of HCV infection.

Methods: A total of 133 patients who had been infected with HCV for 12-25 (18.2+/-3.

[Comparison among four kits in detection of anti-SARS-CoV IgG in sera of SARS patients].

Objective: To compare the sensitivity and specificity of four kits for detection of anti-severe acute respiratory syndrome (SARS)-CoV IgG in sera of SARS patients.

Methods: Anti-SARS-CoV IgG was detected in 99 serial sera from 18 SARS patients and in 123 negative reference sera, using two enzyme linked immunosorbent assays (EIA No. A and No.

[Nine-year follow-up of hepatitis C virus infection in a rural area of Hebei province, China].

Objective: To investigate natural history of hepatitis C virus infection and related factors among plasma donors in China.

Methods: 172 plasma donors in a rural area of Hebei province had been diagnosed as HCV infection in 1993. No antiviral treatment was applied to them during the period of infection.

Pathogenicity of GB virus C on virus hepatitis and hemodialysis patients.

Aim: To determine the pathogenicity of GB virus C (GBV-C) on liver and the effects of its co-infection on the clinical features and prognosis of patients with hepatitis B and C.

Methods: Cross-sectional study was carried out in 413 patients with acute, chronic hepatitis B or liver cirrhosis, and in 67 hemodialysis patients. A 20-month prospective cohort study was carried out in 95 hepatitis B and 80 hepatitis C patients.

A cross-sectional study on HGV infection in a rural population.

AIM:To determine the epidemiological characteristics and clinical significance of HGV infection, and to compare with HBV and HCV infections.METHODS: Anti-HGV, HBsAg, anti-HBs, anti-HBc and anti-HCV were detected by enzyme-linked immunoassys (EIA). Anti-HGV positive sera were further tested for HGV RNA by a nested reverse transcription polymerase chain reaction (RT-nPCR).