Tian Cai Wang

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A study of 84 gastric biopsies taken from 42 adult patients revealed simple techniques for Gram stain and culture for Campylobacter pylori. In an initial study of 18 biopsies, Gram stains prepared from ground, diluted tissue were all negative for curved, gram-negative rods, whereas 13 of these specimens were positive for C. pylori by culture. The Gram(More)
A series of hydroquinone monoalkyl ethers was synthesized and evaluated for anti lipid-peroxidation activity in rat liver microsomes. 4-Hexyloxy-2,3,6-trimethylphenol (9), having a low redox potential, as well as ascorbic acid exhibited the strongest anti lipid-peroxidation activity (IC50 = 4.2 x 10(-7) M). Structure-activity relationship studies(More)
PURPOSE To determine the prevalence of Helicobacter pylori in patients with non-ulcer dyspepsia and ulcer disease as well as in a control population undergoing endoscopic retrograde cholangiopancreatography (ERCP) for suspected pancreatic or biliary disease. PATIENTS AND METHODS Forty-six eligible patients undergoing upper endoscopy at Massachusetts(More)
The influence of mannose, glucose, galactose and their corresponding methyl and phenyl glycopyranosides, as well as a series of alkylphenyl alpha-D-mannopyranosides, on histamine release from rat peritoneal mast cells induced by concanavalin A was examined. Among the compounds tested, the inhibitory effects of compounds bearing a 2,6-dimethyl substituent(More)
The inhibitory effects of newly synthesized 4-alkoxyaryl beta-D-glucopyranosides on histamine release from rat peritoneal mast cells induced by concanavalin A were examined. A plot of hydrophobicity (k') against inhibitory activity of the compounds showed a distinct maximum, and 4-decyloxy-2,3,6-trimethylphenyl beta-D-glucopyranoside was the most potent(More)
OBJECTIVE To investigate the action of nitric oxide (NO) on testicular dysfunction in cirrhotic rats. METHODS Cirrhotic rats were induced by bile duct ligation (BDL). Concentration of NO in the serum and homogenates of the testicular tissue in biliary cirrhotic rats, L-NAME rats, and sham operated rats were measured by assay of nitrate reductase.(More)
The inhibitory effects of alkylphenyl alpha-D-mannopyranosides on histamine release from rat peritoneal mast cells induced by an antigen-antibody reaction were examined. Among the compounds tested, 2,4,6-trimethylphenyl alpha-D-mannopyranoside exhibited the strongest inhibitory effect. Furthermore, the 2,4,6-trimethylphenyl alpha-D-mannopyranoside(More)