OBJECTIVE:To establish a method for the uncertainty evaluation of determining content of Lamivudine tablets by HPLC. METHODS:HPLC was established to determine the mathematical model of Lamivudine tablets contents,analyze the uncer-tainty sources in detail and evaluate each uncertainty components and combined uncertainty to obtain the expanded uncertainty. RE-SULTS:Uncertainty of Lamivudine tablets contents determined by HPLC was mainly from reference purity,weighing standard and glassware tolerance. Standard uncertainty was 0.21% and expanded uncertainty was 0.42%. The range of content determination was (99.76 ± 0.42)%,k=2. CONCLUSIONS:The method is suitable for uncertainty evaluation of Lamivudine tablets by HPLC,and provides reference for the quality control in laboratory and objective evaluation of Lamivudine tablets.

Adult ; CD56 Antigen ; metabolism ; Diagnosis, Differential ; Granzymes ; metabolism ; Humans ; Lymphoma, Extranodal NK-T-Cell ; metabolism ; pathology ; surgery ; Lymphoma, T-Cell, Peripheral ; metabolism ; pathology ; Male ; Pectoralis Muscles ; pathology ; surgery ; RNA, Viral ; metabolism ; Soft Tissue Neoplasms ; metabolism ; pathology ; surgery ; Thoracic Wall ; pathology ; surgery

Objective To observe the expression of SGK in decidua in patients with unexplained recurrent spontaneous abortion(URSA) and to investigate its role in the course of apoptosis.Methods The expression of SGK was detected by immunohistochemistry in decidua of URSA(abortion group,n =50) and normal first trimester pregnant women(control group,n =30).The apoptotic index was detected by TUNEL.Results Compared with the control group,the positive expression of SGK decreased significantly in the abortion group,and the difference was statistically significant(x2 =6.78,P ＜ 0.05).The average apoptotic index of the abortion group was (8.19 ± 3.58) ％,which was significantly higher than (2.87 ±1.07)％ of the control group(t =7.94,P＜0.05).Conclusion Intensive apoptosis,the decreasing positive expression rate of SGK in decidua cells may play critical roles in URSA.

Objective To analyze the composition of and drug resistance in bacteria isolated from the lesions of patients with squamous cell carcinoma of the face and head.Methods Lesional tissue or discharges were obtained from 246 patients with squamous cell carcinoma of the face and head,and subjected to conventional bacterial culture.The isolated bacteria were identified by VITEK TWO automated microbiology system.Antimicrobial susceptibility testing was carried out by Kirby-bauer method.WHONET 5.3 software was utilized for statistical analysis.Results Totally,294 bacterial strains were isolated,including 168 Gram-negative bacteria (57.1％)and 126 Gram-positive bacteria(42.9％).The bacterial isolates were predominated by Staphylococcus aureus(21.4％),followed by Escherichia coli(20.4％),Staphylococcus epidermidis(18.4％),Klebsiellapneumoniae(15.4％)and Pseudomonas aeruginosa(9.5％).The prevalence was 40％,26.7％,42.9％ and 55.6％ respectively for extended spectrum β lactamases-producing E.coli and K.pneumoniae,methicillinresistant staphylococcus aureus(MRSA)and methicillin-resistant coagulase-negative S.epidermidis(MRCNS)respectively.P.aeruginosa,E.coli and K.pneumoniae were highly susceptible to imipenem and meropenem,and favorably sensitive to β-lactam and β-1actamase inhibitor combination.No resistance was observed for vancomycin,teicoplanin or linezolid in staphylococci.Conclusions The bacterial isolates from squamous cell carcinoma tissue on the head and neck are predominated by conditional pathogenic bacteria,and the proportion of Gram-negative bacteria is higher than that of Gram-positive bacteria.These isolates seem to be highly resistant to common antibiotics.