Objective:To investigate impact of atractylolidⅠ(ATR-Ⅰ)on liver function of hepatitis B virus(HBV)infection rats by regulating cGAS-STING pathway.Methods:Ten rats were randomly selected as control group(NC),rest rats were injected with HBV antigen via tail vein to construct HBV model.Rats successfully modeled were randomly grouped into HBV group,ATR-Ⅰgroup(50 μg/kg),inhibitor of cGAS-STING pathway(RU.521)group(450 μg/kg),ATR-Ⅰ+RU.521 group(50 μg/kg ATR-Ⅰ+450 μg/kg RU.521),with 10 rats in each group.NC group and HBV group were injected with same amount of normal saline once a day for 1 week.Serum aspartate aminotransferase(AST),alanine aminotransferase(ALT),hyaluronic acid(HA),laminin(LN),procolla-gen type Ⅲ(PC Ⅲ),IFN-γ,IL-2,TNF-α,hepatitis B surface antigen(HBsAg),hepatitis B e antigen(HBeAg)were detected by ELISA;HE staining was applied to detect liver histopathology;Masson staining was applied to detect degree of liver fibrosis;Western blot was applied to detect expressions of cGAS-STING pathway proteins in liver tissue.Results:Collagen volume fraction,ALT,AST,HBsAg,HBeAg contents,HA,LN and PC Ⅲ,IFN-γ,TNF-α and IL-2 levels in HBV group were higher than NC group,levels of cGAS,STING,p-TBK1/TBK1,p-IRF3/IRF3 and IFN-β were decreased(P<0.05);compared with HBV group,degree of liver injury and liver fibrosis in ATR-Ⅰ group were improved,collagen volume fraction,ALT,AST,HBsAg,HBeAg contents,HA,LN,PC Ⅲ,IFN-γ,TNF-α and IL-2 levels were decreased,levels of cGAS,STING,p-TBK1/TBK1,p-IRF3/IRF3 and IFN-β were in-creased(P<0.05),RU.521 group showed opposite trend,RU.521 eliminated improvement effect of ATR-Ⅰ on liver function of HBV rats.Conclusion:ATR-Ⅰmay improve liver function of HBV rats by activating cGAS-STING pathway.

Objective:To investigate impact of atractylolidⅠ(ATR-Ⅰ)on liver function of hepatitis B virus(HBV)infection rats by regulating cGAS-STING pathway.Methods:Ten rats were randomly selected as control group(NC),rest rats were injected with HBV antigen via tail vein to construct HBV model.Rats successfully modeled were randomly grouped into HBV group,ATR-Ⅰgroup(50 μg/kg),inhibitor of cGAS-STING pathway(RU.521)group(450 μg/kg),ATR-Ⅰ+RU.521 group(50 μg/kg ATR-Ⅰ+450 μg/kg RU.521),with 10 rats in each group.NC group and HBV group were injected with same amount of normal saline once a day for 1 week.Serum aspartate aminotransferase(AST),alanine aminotransferase(ALT),hyaluronic acid(HA),laminin(LN),procolla-gen type Ⅲ(PC Ⅲ),IFN-γ,IL-2,TNF-α,hepatitis B surface antigen(HBsAg),hepatitis B e antigen(HBeAg)were detected by ELISA;HE staining was applied to detect liver histopathology;Masson staining was applied to detect degree of liver fibrosis;Western blot was applied to detect expressions of cGAS-STING pathway proteins in liver tissue.Results:Collagen volume fraction,ALT,AST,HBsAg,HBeAg contents,HA,LN and PC Ⅲ,IFN-γ,TNF-α and IL-2 levels in HBV group were higher than NC group,levels of cGAS,STING,p-TBK1/TBK1,p-IRF3/IRF3 and IFN-β were decreased(P<0.05);compared with HBV group,degree of liver injury and liver fibrosis in ATR-Ⅰ group were improved,collagen volume fraction,ALT,AST,HBsAg,HBeAg contents,HA,LN,PC Ⅲ,IFN-γ,TNF-α and IL-2 levels were decreased,levels of cGAS,STING,p-TBK1/TBK1,p-IRF3/IRF3 and IFN-β were in-creased(P<0.05),RU.521 group showed opposite trend,RU.521 eliminated improvement effect of ATR-Ⅰ on liver function of HBV rats.Conclusion:ATR-Ⅰmay improve liver function of HBV rats by activating cGAS-STING pathway.

This paper analyzes library users' satisfaction about service quality of the library of Peking University School and Hospital of Stomatology.The main factors associated with users' satisfaction are discussed.In the end,it proposes a series of effective measures to promot library service quality.

Objective To investigate a retrieval strategy for dentistry literature based on medical subject headings (MeSH). Methods We analysed the MeSH Tree Structures of PubMed in 2009 and combined it with the core glossary of dentistry to find out highly frequent dental words in MeSH. Then 6 words were singled out from the whole MeSh Tree to apply for a retrieval strategy for dentistry literatures. Results 102,500 pieces of dentistry literature were obtained from the year 2006 to 2008. Conclusions This research strategy can improve the efficiency of literature search in dentistry field for clinical or laboratory researches.