Peripheral NK and NKT cell in pediatric subjects with chronic HBV infection / 中华实验和临床病毒学杂志

<p><b>OBJECTIVE</b>To investigate the characteristic of NK cells and NKT cells in HBV infected pediatric subjects for evaluation of their clinical implication.</p><p><b>METHODS</b>Fresh peripheral blood samples were obtained from 42 HBV-infected pediatric cases and 15 healthy counterparts. NK cells and NKT cells were analyzed by flow cytometry assay. The clinical data such as serum ALT level and HBV viral load was simultaneously recorded from each HBV carrier.</p><p><b>RESULTS</b>HBV-infected children had an obviously increasing percentage of NK cells 12.071% +/- 7.100%, there were significant differences between the children with chronic B hepatitis and the healthy children (P <0.05). As far as percentage of NKT 3.048% +/- 1.937% was concerned, there were not differences. Furthermore the association was not found between serum HBV viral load level and the NK lymphocyte.</p><p><b>CONCLUSION</b>Our data may provide valuable information of NK and NKT lymphocyte for evaluation of disease progression of HBV infected children NKI cells.</p>

Comparative study on antibacterial effects of huangqin-tang and its metabolites produced by intestinal flora / 中国中药杂志

<p><b>OBJECTIVE</b>To compare the antibacterial effects of Huangqin-Tang with its metabolites produced by intestinal flora.</p><p><b>METHOD</b>The antibacterial tests in vitro and in vivo were performed by agar dilution method and lethal protection of animal respectively.</p><p><b>RESULT</b>Huangqin-Tang and its metabolites had antibacterial action on bacteria in vitro, however the antibacterial activity of metabolites of Huangqin-Tang on Salmomella, Dysentery bacillus and Proteus in vitro was stronger than Huangqin-Tang. The metabolites of Huangqin-Tang had protective effect on the animals infected by Staphylococcus aureus and Escherichia coli respectively from death, but Huangqin-Tang had no lethal protection action.</p><p><b>CONCLUSION</b>The antibacterial effects of metabolites of Huangqin-Tang in vitro and in vivo are stronger than that of Huangqin-Tang, which shows that intestinal flora play a very important role in antibacterial effects of Huangqin-Tang.</p>

A comparison of the protective activity of liver injury induced by D-galact-osamine between huangqin-tang and their metabolites by human intestinal bacteria / 中国中药杂志

<p><b>OBJECTIVE</b>To compare the protective activity of liver injury induced by D-galactosamine (GalN) between Huangqin-Tang and their metabolites by human intestinal bacteria(HIB).</p><p><b>METHOD</b>The liver injuries in conventional and pseudo-germfree mice were induced by GalN. After oral administration of Huangqin-Tang and their metabolites mixtures by HIB, the serum transaminase (ALT and AST) activities were detected.</p><p><b>RESULT</b>In conventional mice, large and medium doses (20 and 10 g.kg-1) of Huangqin-Tang decoction significantly reduced the increase of serum ALT activity after 18 h GalN treatment. In pseudo-germfree mice, metabolites significantly reduced the ALT levels. However, Huangqing-Tang didn't affect the ALT levels in this kind of mice. To all of the animals, AST levels remained the same after oral Huangqin-tang or their metabolites.</p><p><b>CONCLUSION</b>The metabolism by intestinal bacteria plays a role in pharmacological effects of constituents of Chinese herbal medicine. The metabolites of the constituents by intestinal bacteria were the real active components in vivo.</p>