[ ABSTRACT] AIM:To investigate the characteristics of the intestinal microbial flora in the pregnant women with congenital heart disease fetus ( PW group) and normal pregnant women ( NW group) .METHODS: Stool samples were collected from 15 NW and 17 PW cases.The bacterial genomic DNA was extracted.The 16S rDNA was amplified by PCR, and the second generation of Illumina sequencing was conducted.RESULTS: We obtained 2 696 276 ( NW group) and 2 445 530 ( PW group) optimized sequences.The coverage was greater than 97%.We obtained 77 243 operational taxono-mic units ( OTUs) in NW group and 75 600 OTUs in PW group after a 97%similarity merge.In NW group, the Chao 1 in-dex and the Shannon index were greater than those in PW group.The diversity analysis of microbial population indicated that they were mainly composed of Firmicutes, Proteobacteria and Actinobacteria.In family, the Bifidobacteriaceae and Cori-obacteriaceae were significantly different through analysis of variance.CONCLUSION: The Bifidobacteriaceae and Cori-obacteriaceae may play an important role in the occurrence of congenital heart disease.

Objective To estimate brain grey matter volume changes and location of abnormal brain regions cerebrum in early stage of bipolar disorder I (BD),in order to provided objective basis for diagnosing early stages BD.Methods 1 7 cases of BD with duration less than 2 years and 1 7 normal controls were recruited in this study.The volumetric difference of grey matter between two groups were analyzed by using voxel-based morphometry(VBM)software.Statistical threshold was voxel> 100,P <0.001 (uncor-rected).Results Compared to the normal controls,the grey matter volume of BD patients decreased in the left dorcial anterior cingu-late cortex(ACC),left insular,right sub-genu ACC,left superior temporal cortex,bilateral hippocampus-parahippocampus-amydala and left posterior lobe of cerebellum(P <0.001).Conclusion The grey matter volume of early stage BD patients is decreased,main-ly locating in the bilateral limbic system,the superior temporal gyrus and the cerebellar cortex,which probably is the morphological appearance of pathomechanism in early stages of BD.

Objective To investigated the clinical distributions and antimicrobial susceptibility of Streptococcus agalactia strains isolated from the patients .Methods The identification and susceptibility of the strains were mainly measured by automatic VITEK‐Ⅱ system ,the K‐B disc diffusion tests were used for the resistance test of erythromycin ,meropenem ,and D‐test .Results The iso‐lates were mainly from urine (63 .1% ) ,genital tract(7 .8% ) and wound secretion(6 .7% ) .They were obtained from patients in dif‐ferent situations ,including 110 patients who were older than 50 years old (61 .5% ) ,113 female patients (63 .1% ) ,12 gravidas (6 .7% ) ,3 vertical transmitted newborns(1 .7% ) ,and 82 patients with cancer ,undergoing chemo radiotherapy ,with diabetes ,tuber‐culosis or after operations(45 .8% ) .The resistant rates of the isolated Streptococcus agalactia to erythromycin and clindamycin were 42 .9% -93 .3% and 41 .9% -80 .0% respectively .The positive rate of D‐test was 4 .1% .The strains were highly resistant to tet‐racycline(>80% ) ,while the resistance to penicillin was below 10% except in 2008 .All isolates were susceptible to vancomycin and meropenem .Only one strain was resistant to Quinupristin‐dalfopristin .Conclusion Streptococcus agalactia infection in adults most‐ly cause genitourinary tract ,skin and soft tissue infections .There were more females than males with Streptococcus agalactia infec‐tion .Penicillin andβ‐lactams are still the first choice for the treatment .Erythromycin ,clindamycin and tetracycline should be used with caution under the guidance of laboratory susceptibility test results .