调肝汤治疗病毒性肝炎SGPT升高30例

笔者近年来运用自拟调肝汤治疗病毒性肝炎SGPT升高30例,疗效满意,现介绍如下。 1 一般资料 本组30例,男17例,女13例;年龄最小5岁,最大55岁;其中急性肝炎10例,慢性迁延性及活动性肝炎20例;病程最长8年,最短40天;SGPT治疗前833.5～1650.33nmol·s-1/L2例,1667～3317.33nmol·s-1/L20例,3334nmol·s-1/L以上8例,TTT异常21例,HBsAg阳性16例。全部病例符合1984年南宁第4届病毒性肝炎会议诊断标准。

病毒性脑炎血清酶学水平变化的临床意义分析

目的探讨病毒性脑炎血清酶学变化的临床意义。方法选择某医院入住的病毒性脑炎患者60例做研究组,抽取静脉血2 mL,抽取时间应为次日晨起,空腹。对天门冬氨酸氨基转移酶(AST)、碱性磷酸酶(ALP)、丙氨酸氨基转移酶(ALT)、γ谷氨酰基转移酶(γ-GT)、肌酸激酶同工酶(CK-MB)、乳酸脱氢酶(LDH)、肌酸激酶(CK)、α-羟丁酸脱氢酶(α-HBDH),进行检测,并与80例对照组头痛患者同类酶检测结果进行比较。结果病毒性脑炎组血清酶学变化异常检出率为65%,对照组血清酶学检出率是27%,2组比较差异有统计学意义(P<0.05)。结论对血清酶学进行测定在病毒性脑炎的鉴别和早期诊断上有重要帮助意义。

Mutagenesis of D80-82 and G83 Residues in West Nile Virus NS2B: Effects on NS2B-NS3 Activity and Viral Replication

Flaviviral NS2B is a required cofactor for NS3 serine protease activity and plays an important role in promoting functional NS2B-NS3 protease configuration and maintaining critical interactions with protease catalysis substrates. The residues D80DDG in West Nile virus (WNV) NS2B are important for protease activity. To investigate the effects of D80DDG in NS2B on protease activity and viral replication, the negatively charged region D80DD and the conserved residue G83 of NS2B were mutated (D80DD/E80EE, D80DD/K80KK, D80DD/A80AA, G83F, G83S, G83D, G83K, and G83A), and NS3 D75A was designated as the negative control. The effects of the mutations on NS2B-NS3 activity, viral translation, and viral RNA replication were analyzed using kinetic analysis of site-directed enzymes and a transient replicon assay. All substitutions resulted in significantly decreased enzyme activity and blocked RNA replication. The negative charge of D80DD is not important for maintaining NS2B function, but side chain changes in G83 have dramatic effects on protease activity and RNA replication. These results demonstrate that NS2B is important for viral replication and that D80DD and G83 substitutions prevent replication; they will be useful for understanding the relationship between NS2B and NS3.