Objective To study the effect and mechanism of gene PBP2 and gene PBP3 in drug resistance of Klebsiella pneumoniae(KP) to different antibacterial agents.Methods A total of 203 strains of KP which isolated from clinical samples in each department in our hospital during the period from April 2014 to April 2015.Strains were identified and antibiotic susceptibility were determined with automatic bacteria identification system,then extracted DNA genome from bacteria,proceeded with electro-phoresis after the product of PBP2 and PBP3 were amplified by PCR,examined genetic expression with RT-PCR,and study their connection to drug-fast of the KP combining results of antibiotic susceptibility.Results In 203 strains of KP,105 strains resistant to β-lactam drug (51.7%),88 strains were sensitive,resistant rate to imipenem and meropenem were 5.4%,3.9% respectively.The PCR amplification products of the electrophoresis bands of PBP2,PBP3 gene,18 strains were negative,185 strains were positive,which was not parallel,there were respectively negative and positive strains among them.There was no significant correlation between PBP2,PBP3 and multiple drug resistance of KP(P=0.295,0.628).PBP2 was not related to the resistance of carbapenem(P=0.637).PBP3 had correlation with carbapenem resistance,but the correlation coefficient was not high(P=0.041,r=0.148).After reverse transcription of PBP2,PBP3,statistically analyze electrophoresis bands of amplification products of carbapenem-resistant KP and 16SrRNA amplification bands of gray gradient ratio,there was no statistical significance(PBP2:P=0.331,PBP3:P=0.383).Conclusion Gene PBP2,PBP3 might not be the necessary reasons of KP being multiple drugs resistant.

OBJECTIVE To investigate and analyze the risk factors,clinical characteristics and prevention countermeasures of hospital fungal incfection in old patients with malignant tumors.METHODS To adopt investigation way to review and analyze the clinical data of hospital fungal infection in 165 cases from the old patients with malignant tumors.RESULTS Among 165 cases the infection occurred predominantly in lower respiratory tract(47.2%),and with urological tract being second(19.0%).Of 165 strains of fungi from 165 patients,the first was Candida albicans(55.8%),and the second was C.tropicalis(23.0%).CONCLUSIONS The causes of hospital fungal infection in old patients with malignant tumors are highly associated with the risk factors such as primary tumor,age,radiotherapy,chemotherapy,antibiotics,hormone,invasive operation,and so on.

Soluble fibrinogen-like protein 2 (sFGL2) , is an novel effector secreted by the CD4+CD25+CD127lowTregs cells and plays an important role in immunoregulation.It is critical for the maintenance of the activity and function of Tregs.It can induce the apoptosis of B cells, suppress the maturation of dendritic cells and suppress the activation and proliferation of T cells through the FcγRⅡB receptor.This review concluded the recent progress of the genes, structure, immunoregulatory effects of sFGL2, and discussed the clinical implications of sFGL2in hepatitis, autoimmunity, transplantation, tumors and atherosclerosis.