Study on time-toxicity relationship and mechanism of Gardeniae Fructus extract on hepatoxicity in rats based on proteomics / 中国中药杂志

To study the time-toxicity relationship and mechanism of Gardeniae Fructus extract on the hepatoxicity in rats. Rats were randomly divided into C group(0 day), D5 group(5 days), D12 group(12 days), D19 group(19 days), and D26 group(7 days recovery after 19 days of administration). The rats in normal group received normal saline through intragastric administration, and the rats in other groups received 10 g·kg~(-1 )Gardeniae Fructus extract through intragastric administration. After the final administration, the livers were collected. Hematoxylin-eosin staining was used to observe the histopathological changes in the liver tissue. Total liver proteins were extracted for proteomic analysis, detected by the Nano-ESI liquid-mass spectrometry system and identified by Protein Disco-very software. SIEVE software was used for relative quantitative and qualitative analysis of proteins. The protein-protein interaction network was constructed based on STRING. Cytoscape software was used for cluster analysis of differential proteins. Kyoto encyclopedia of genes and genomes(KEGG) database was used to perform enrichment signal pathway analysis. Pearson correlation analysis was performed for the screened differential protein expression and liver pathology degree score. The results showed that the severity of liver injury in D5, D12 and D19 groups was significantly higher than that in group C. The degree of liver damage in D5 group was slightly higher than that in D12 and D19 groups, with no significant difference between group D26 and group C. Totally 147 key differential proteins have been screened out by proteomics and mainly formed 6 clusters, involving in drug metabolism pathways, retinol metabolism pathways, proteasomes, amino acid biosynthesis pathways, and glycolysis/gluconeogenesis pathways. The results of Pearson correlation analysis indicated that differential protein expressions had a certain temporal relationship with the change of liver pathological degree. The above results indicated that the severity of liver damage caused by Gardeniae Fructus extract did not increase with time and would recover after drug with drawal. The above pathways may be related to the mechanism of liver injury induced by Gardeniae Fructus extract.

Relationship between the quantities of virus and the models of serologic markers in patients infected with HBV / 中华肝脏病杂志

<p><b>OBJECTIVE</b>To explore the relationship between the quantities of HBV and the models of serologic markers.</p><p><b>METHODS</b>Real-time fluorescent quantitative PCR was used to measure the HBV DNA and ELISA was used to detect the antigen/antibody of HBV.</p><p><b>RESULTS</b>The patients whose HBV copies were more than 10(3)/ml accounted for 87.3%, whose copies were more than 10(7)/ml accounted for 66.7% among the HBsAg and HBeAg -positive patients. The patients whose HBV copies were less than 10(3)/ml accounted for 74.5%, whose HBV copies were more than 10(7)/ml accounted for 8.3% among the HBeAg-negative patients. The HBV copies of HBeAg-positive patients were significantly more than HBeAg-negative patients (P<0.01). The HBV copies of anti-HBe-negative patients were significantly more than anti-HBe-positive patients (P<0.01). The HBV DNA was detected in some HBsAg-negative patients. One patient's HBV copies were as high as 1.59 10(9)/ml.</p><p><b>CONCLUSIONS</b>The HBV copies of HBeAg-positive patients are significantly more than HBeAg-negative patients, The HBV copies of anti-HBe-negative patients are significantly more than the anti-HBe-positive patients. However, some HBeAg-positive patient's HBV copies are very low, and some HBeAg-negative patient's HBV copies are very high. HBV DNA even could be detected in some HBsAg-negative patients. It is difficult to judge accurately the quantities of HBV and infectivity according to the serologic markers for a specific patient.</p>