Objective To investigate clinical features and drug resistance of neonate septicemia caused by Streptococcus agalac-tiae in the hospital and to provide clinical guidance for treatment.Methods 42 Streptococcus agalactiae isolates in the hospital were identified and their department distribution as well as drug susceptibility was determined by using automatic VITEK-2 system and criteria released by CLSI in 2012.Results The number of cases in preterm neonatal intensive care unit,full-term neonatal intensive care unit,pediatric intensive care unit and extremely preterm neonatal intensive care unit were 3,26,7 and 6,respectively.The drug resistance rates of the isolated Streptococcus agalactiae to ampicillin,erythromycin,clindamycin,quinupristin/dalfopristin,linezolid, penicillin,tetracycline,tigecycline,vancomycin and levofloxacin were 0.0%,69.0%,71.4%,0.0%,0.0%,0.0%,74.4%,0.0%, 0.0% and 38.1%,respectively.Conclusion The antimicrobial resistance rates of Streptococcus agalactiae which caused neonatal septicemia in our hospital are relatively high.Ampicillin and penicillin are recomended in treatment for neonate septicemia caused by Streptococcus agalactiae .

Objective To evaluate the diagnostic value of procalcitonin(PCT),C-reactive protein(CRP),prealbumin(PA)and white blood cell (WBC)count measurements in patients with severe pneumonia.Methods The serum samples of 34 patients with severe pneumonia,68 non-severe pneumonia patients and 40 healthy volunteers were collected.Serum concentrations of PCT,CRP, PA and WBC count of all samples were determined.Results The levels of PCT,CRP,PA and WBC in patients with severe pneu-monia were (24.07±34.77)ng/mL,(98.75 ±69.63)mg/L,(105.65 ±68.88)mg/L,(12.64±7.62)×109/L,which were signifi-cantly higher than those in non-severe pneumonia patients and healthy group(P <0.05).According to ROC analysis,the sensitivity, specificity and Youden index of PCT were 64.7%,77.9%,0.426.Conclusion The level of serum PCT could be used as good bio-marker for severe pneumonia.Detection of PCT,CRP and WBC together plays an important role in the diagnosis of severe pneumo-nia.

Objective To investigate the relationship between suspected ankylosing spondylitis and HLA‐B27 antigen by detec‐ting the positive frequency of HLA‐B27antigen in 872 suspected AS patients ,and evaluate its clinical significance .Methods The positive frequency of HLA‐B27 on the T lymphocyte membrane were detected by flow eytometer in 872 suspected AS patients .Re‐sults Among the 872 suspected AS patients the ratio between male and female was 1 .8∶1 ,the positive rate of antigen HLA‐B27 was 27 .29% ,and the male and female patients′positive rates of HLA‐B27 antigen were 32 .50% and 17 .95% ,respectively (P<0 .05) .The male and female patients′ expression percentage of B27+ /B7- monoclonal antibody were 39 .16 ± 42 .79 and 20 .96 ± 33 .86 ,respectively(P<0 .05) .The male and female patients′mean fluorescence intension of B27+ /B7- monoclonal antibody were 5 .35 ± 5 .44 and 3 .35 ± 3 .87 ,respectively(P<0 .05) .Conclusion The patients with AS are strongly associated with HLA‐B27 an‐tigen .Detection of HLA‐B27 antigen expression intensity in suspected AS patients with FCM is helpful to diagnosis and differential diagnosis of AS .