DNA marker-assisted selection of medicinal plants (Ⅲ)Evaluation of disease resistance of "Miaoxiang Kangqi 1" --a new cultivar of Panax notoginseng / 中国中药杂志

DNA marked-assisted selection of medicinal plants accelerated the breeding and promotion of new cultivars, and guaranteed the healthy development of Chinese medicinal materials industry. The first disease-resistant cultivar of notoginseng, namely "Miaoxiang Kangqi 1", served as the object of study. We evaluated the Kangqi's resistance of seeds, seedlings and root against the pathological bacteria (Fusarum oxysporum) of root rot. Compared to the traditional cultivars, the disease index of notoginseng seeds declined by 52.0% after inoculation for seven days; the death rate of seedlings and disease index of root respectively decreased by 72.1% and 62.4% after inoculation for 25 days. Additionally, the growth inhibition ratio of notoginseng seeds and seedlings declined after inoculation. The seeds, seedlings and roots of "Miaoxiang Kangqi 1" showed significantly resistant to root rot. The evaluation of disease-resistance of Kangqi provided the basis for the popularization of new cultivar and guaranteed the favoring conduct of notoginseng pollution-free cultivation.

Study on the correlation between chronic asymptomatic HBV carriers of yin asthenia constitution and genotypes of HLA-DRB1 and HLA DQA1 alleles / 中国中西医结合杂志

<p><b>OBJECTIVE</b>To study on the correlation between chronic asymptomatic HBV carriers (ASC) of yin asthenia constitution and genotypes of HLA-DRB1 and HLA DQA1 alleles.</p><p><b>METHODS</b>Totally 105 ASC were assigned to two groups according to their constitutions, i.e., the yin asthenia group (47 cases) and the non-yin asthenia group (58 cases). The genotypes of HLA-DRB1 and HLA DQA1 alleles were determined using PCR-SSP.</p><p><b>RESULTS</b>The gene frequency of HLA-DRB1 * 09 allele and HLA-DQA1 * 0301 allele (being 12.1% and 19.1%) were obviously lower in the yin asthenia group than in the non-yin asthenia group (being 27.8% and 39.7%, P < 0.05). The gene frequency of HLA-DRB1 * 11 allele and HLA-DQA1 * 0501 allele were obviously higher in the yin asthenia group (being 12.1% and 28.7%) than in the non-yin asthenia group (4.3% and 9.5%), showing statistical difference (P < 0.05, P < 0.01).</p><p><b>CONCLUSIONS</b>HLA-DRB1 * 09 allele and HLA-DQA1 * 0301 allele might be the molecular bases for non-yin asthenia patients with ASC. HLA-DRB1 * 11 allele and HLA-DQA1 * 0501 allele might be the molecular bases for yin asthenia patients with ASC.</p>

P53 expression in liver tissue of patients with chronic hepatitis B and its influencing factors / 中华实验和临床病毒学杂志

<p><b>OBJECTIVE</b>To observe p53 expression in liver tissue of patients with chronic hepatitis B and its influencing factors.</p><p><b>METHODS</b>17 cases HBeAg-negative chronic hepatitis B patients and 31 cases HBeAg-positive chronic hepatitis B patients were divided into 2 groups.</p><p><b>RESULTS</b>(1) HBeAg-negative chronic hepatitis B patients were older, mostly male and HBV DNA lower. These three indicators between two groups patients appeared statistical difference. Serum markers were no statistical difference between two groups patients except Glo. (2) Pathological inflammation and fibrosis Staging were no statistical difference between two groups patients. p53 expression positive rate and p53 expression semi-quantitative scoring in liver tissue were no statistical difference between the two groups. (3) Logistic regression analysis showed that only liver fibrosis staging (S) is a risk factor for p53 expression. Compared with the S0-1, p53 expression increased by 3.9 times the rate of positive in S > or = 2.</p><p><b>CONCLUSION</b>Liver fibrosis staging in patients with chronic hepatitis B is a risk factor for p53 positive expression in liver.</p>

The effect of extract of ginkgo biloba leaf during the formation of HBV-related hepatocellular carcinoma / 中华实验和临床病毒学杂志

<p><b>OBJECTIVE</b>To investigate the effect of extract of ginkgo biloba leaf (EGb) during the formation of HBV-related hepatocellular carcinoma (HCC).</p><p><b>METHODS</b>99 HBV transgenic mice were randomly divided into control group, high-dose group, low-dose group. High-dose group and low-dose group were intraperitoneal injected 35mg/(kg x d) and 17.5 mg/(kg x d) of the shuxuening injection. Control group without special treatment. The serological markers and immunohistochemical markers in liver tissue will be done at the first 12 months and 18 months.</p><p><b>RESULTS</b>(1) HBV transgenic mice can be found HCC at the 18 months. The incidence of HCC was lower in high-dose group and low-dose group, there was statistically different among the three groups. (2) The semi-quantitative scoring of liver HBx expression was highest in the control group at the 12 months. The semi-quantitative scoring of liver HBx, p53 and Bcl-2 expression was highest in the control group at the 18 months. They all appeared statistically different among the three groups. (3) Spearman correlation analysis showed that HCC incidence and liver tissue HBx, p53, Bcl-2 expression was a certain degree of positive correlation, r was 0.536, 0.487 and 0.403, P < 0.05.</p><p><b>CONCLUSION</b>EGb can reduced the incidence of the HCC with HBV transgenic mice. The reason may be that the EGb can reduce liver HBx, p53, Bcl-2 protein expression in the HBV transgenic mice.</p>

Prognostic analysis of 336 patients with chronic severe hepatitis B / 中华实验和临床病毒学杂志

<p><b>OBJECTIVE</b>To investigate the risk factors related to outcome of chronic severe hepatitis B.</p><p><b>METHODS</b>A total of 336 consecutive patients with chronic severe hepatitis B (CSHB) were analysed retrospectively. According to the outcome, objects were divided into survival group (n = 137) and death group(n = 199), then to observe the differences between them in respect to age, sex, family history, prothrombin activity (PTA), complications including ascites, infection, electrolyte disturbance, upper gastrointestinal bleeding, hepatic encephalopathy, hepatorenal syndrome and the corresponding quantity of complications in each individual, antivirus therapy, artificial liver support system (ALSS) therapy, and alprostadil therapy. Finally, risk factors related to prognosis were selected by stepwise Logistic regression analyse.</p><p><b>RESULTS</b>In univariate analyse, significant differences between the two groups were found related to age, PTA, complications and its quantity (P < 0.01 for all), and antivirus therapy (P < 0.05) rather than sex, family history and treatment of ALSS or alprostadil. Logistic regression revealed that risk factors comprised of PTA and quantity of complications, antivirus therapy was the only protective factor.</p><p><b>CONCLUSION</b>A numbers of factors including age, PTA, complications and its quantity, and antivirus therapy affect the prognosis of CSHB, among which, antivirus therapy can reduce the death rate.</p>

Effect of ultrasound activating hematoporphyrin on the activities of antioxidative enzymes in mouse hepatoma 22 / 生物医学工程学杂志

This investigation was made with regard to the influences of ultrasound combined with hematoporphyrin on the activities of antioxidative enzyme in ascites hepatoma 22 (H-22) tumor cells, and to a better understanding of the potential biological mechanism of sonodynamic therapy which involved the damage to cells. Combined with 100 microg/ml hematoporphyrin, high intensity focused ultrasound sonication at a frequency of 1.43 MHz and an intensity level of 2.0 W/cm2 was delivered to H-22 tumor cells for 1 min. The viability of cells was evaluated by typan-blue blue exclusion test. The intracellular reactive oxygen species (ROS) levels were determined by 2',7'-dichlorofluorescein diacetata (DCFH-DA). Enzymatic chemical methods were used to measure the activities of key antioxidative enzymes. The results indicated that the cell damage rate of ultrasound combined with hematoporphyrin was significantly higher than that of the treatment with ultrasound alone, and hematoporphyrin alone had no killing effect on H-22 cells. The level of ROS in cell suspension was significantly increased, and the key antioxidative enzyme activities were obviously decreased after treatment with the combined use of ultrasound and hematoporphyrin. We speculated that the decreased activities of key antioxidative enzymes in cells might be involved in mediating the killing effect on H22 cells in sonodynamic therapy.