UhpTE350Q mutation along with the presence of fosA6/5 genes in the genome probably contributes to inherent fosfomycin resistance of Klebsiella pneumoniae / 南方医科大学学报

OBJECTIVE@#To investigate the molecular mechanism underlying inherent fosfomycin resistance of Klebsiella pneumoniae (K. pneumoniae).@*METHODS@#The draft genomic sequences of 14 clinical hypervirulent/hypermucoviscous K. pneumoniae (HvKP/ HmKP) isolates were obtained using the next-generation sequencing technology. The genomic sequences were analyzed using the Resistance Gene Identifier (RGI) software for predicting the resistome based on homology and SNP models in the Comprehensive Antibiotic Resistance Database (CARD) and for identification of the presence of phosphomycin resistancerelated genes uhpt and fosA and their mutations in the bacterial genomes. The results were verified by analyzing a total of 521 full-length genomic sequences of K. pneumonia strains obtained from GenBank.@*RESULTS@#All the 14 clinical isolates of HvKP/ HmKP carried hexose phosphate transporter (UhpT) gene mutation, in which the glutamic acid was mutated to glutamine at 350aa (UhpTE350Q mutation); the presence of fosA6 gene was detected in 12 (85.71%) of the isolates and fosA5 gene was detected in the other 2 (14.29%) isolates. Analysis of the genomic sequences of 521 K. pneumonia strains from GenBank showed that 508 (97.50%) strains carried UhpTE350Q mutation, 439 (84.26%) strains harbored fosA6, and 80 (15.36%) strains harbored fosA5; 507 (97.31%) strains were found to have both UhpTE350Q mutation and fosA6/5 genes in the genome. Only 12 (2.30%) strains carried fosA6/5 genes without UhpTE350Q mutation; 1 (0.19%) strain had only UhpTE350Q mutation without fosA6/5 genes, and another strain contained neither UhpTE350Q mutation nor fosA6/5 genes.@*CONCLUSION@#UhpTE350Q mutation with the presence of fosA6/5 genes are ubiquitous in K. pneumonia genomes, indicating a possible intrinsic mechanism of fosfomycin resistance in the bacterium to limit the use of fosfomycin against infections caused by K. pneumoniae, especially the multi-resistant HvKP/HmKP strains.

Expression of AEBP1 and its prognostic role in glioma based on the data-mining of TCGA and GTEx databases / 西安交通大学学报(医学版)

【Objective】 To explore the expressions of adipocyte enhancer binding protein 1 （AEBP1） gene and its isoforms in different types of gliomas， and the influence of AEBP1 gene on the prognosis of patients with different types of gliomas. 【Methods】 We used the GEPIA2 visual network analysis tool to analyze AEBP1 gene expression levels in the tumor tissues of glioblastomas （GBM， including classical， mesenchymal， neural， and proneural ones） and low-grade gliomas （LGG， including astrocytoma， oligoastrocytoma， oligodendroglioma） in the TCGA database and normal human tissue samples in the TCGA and GTEx databases by one-way ANOVA. The distribution trend of isoforms of AEBP1 gene in gliomas was analyzed using the violin plot. The Kaplan-Meier survival curve was drawn and the Logrank test was used to analyze the influence of AEBP1 gene expression in GBM and LGG tumor tissues on the prognosis of glioma patients. 【Results】 The expression of AEBP1 in the tumor tissues of overall GBM and the four types of GBM was higher than that in the normal control tissues （P<0.05）. The expression of AEBP1 in astrocytoma and oligodendrocyte astrocytoma tumor tissues was higher than that in normal control tissues （P<0.05）. There were nine isoforms of AEBP1 gene in GBM and LGG， and the expression level in GBM was higher. The overall survival （OS） of the AEBP1 low expression group of GBM patients and the proneuronal GBM patients was better than that of the high expression group （P<0.05）. The OS and progression-free survival of LGG patients and the AEBP1 low-expression group of astroglioma were better than those of the high-expression group （P<0.05）. 【Conclusion】 AEBP1 has an important clinical value in the pathogenesis and development of GBM and LGG， and thus can be used as a diagnostic marker and a candidate gene for targeted therapy.

Pathogenic significance and possible pathogenic mechanism of human endogenous viruses in development of schizophrenia / 病毒学报

The association between psychogenic illness and human endogenous viruses (HEVs), including human endogenous retrovirus and Borna disease virus, remains unclear. As the component of human genome, HEVs may become the joint of various pathogenic factors of schizophrenia (SZ), such as heredity, environment, and immunity. In this review, we strive to uncover the clinical and laboratory evidence for the roles and possible pathogenic mechanism of HEVs in the development of SZ.

Construction of clinical microbiological laboratory with fast-responsibility / 中华检验医学杂志

Inadequate empirical antibiotic therapy and delayed target therapy have been demonstrated to be significantly associated with higher mortality.Because microbiological results based on the traditional culture and identification require quite a long time,empirical broad-spectrum antimicrobial therapy is often initiated according to the clinical presentation,which may resulting in the development of antimicrobial resistance.One of the strategies to alter the dilemma situation is that the initial empirical therapy is adjusted to definitive therapy as early as possible,which can only be done on the basis of rapid microbiological reports.Clinical microbiology laboratories should integrate a variety of rapid detection methods,improve working process,present reports as soon as possible,and bear fast-responsibility.

Role of apoptosis in hepatic injury of rat and patients with Clonorchis sinensis infection / 中国地方病学杂志

Objective To investigate the liver injury and pathological changes of rat and patients with Clonorchis sinensis(C, sinensis) infection, and to clarify the role of apoptosis in the injury induced by C. sinensis.Methods Wistar rats were divided into two group: 60 in infection group and 20 in control. The rats in infection group were infected with C. sinensis via oral feeding encysted cercaria;rats in control group were fed with normal saline. The rats were sacrificed 4, 6, 8 and 12 weeks after infection, respectively. Liver tissue specimens of the patients infected with C. sinensis were collected. The pathological changes of liver tissue were observed by light microscopy and the apoptofic rate of hepatocyte was detected by terminal deoxynucleotidyl transferase dUTP nick end labeling(TUNEL) assay. Results Parasites and eggs could he seen around the bile duct, and the duct was associated with mucosa and adenoma papillary hyperplasia, wall thickening, inflammatory cell infiltration, a small amount of fibrous tissue hyperplasia, and periportal liver cells surrounded by a number of nuclear condensation, all these changes meant morphological characteristics of apoptosis. Apoptotic rates of liver cells in infection group 4, 6,8 and 12 weeks after infection were (7.15 ± 1.50)%,(11.61 ± 3.09)%,(13.21 ± 3.47)% and (11.26 ± 4.06)%,respectively, which was significantly higher than that in control group [(2.57 ± 0.72)%, (3.17 + 0.77)%, (3.67 ±0.96)% and (2.84 ± 0.87)%, t values were 4.45, 5.49, 5.95 and 4.74, respectively, all P < 0.01]. Conclusions These findings indicate that C, sinensis can stimulate both hepatoeytic apoptosis and degeneration which may he related to clinical manifestations and liver lesions in patients with clonorchiasis.

Observation on short and long-term effects of cervical spondylotic radiculopathy treated with abdominal acupuncture plus Long's bone-setting manipulation / 中国针灸

<p><b>OBJECTIVE</b>To compare the short and long-term therapeutic effects on cervical spondylotic radiculopathy (CSR) treated with simple Long's bone-setting manipulation, abdominal acupuncture and abdominal acupuncture plus Long's bone-setting manipulation.</p><p><b>METHODS</b>One hundred and eighty cases of CSR were randomly allocated into abdominal acupuncture plus bone-setting group (combined therapy group), bone-setting group and abdominal acupuncture group, 60 cases in each group. In combined therapy group, the abdominal acupuncture and Long's bone-setting were applied in combination. Abdominal acupuncture was applied to Zhongwan (CV 12), Guanyuan (CV 4), Shiguan (KI 18), Shangqu (KI 17), etc. Long's manipulation, such as bone-setting in head-upward posture and bone-setting in head-lateral posture, was adopted. In bone-setting group and abdominal acupuncture group, Long's bone-setting manipulation and abdominal acupuncture were adopted simply and respectively. The clinical therapeutic effects were compared after 2 courses of treatment (short-term) and 1-month after treatment (long-term) among groups.</p><p><b>RESULTS</b>The short and long-term curative and markedly effective rates in combined therapy group were 80.7% (46/57) and 68.4% (39/57) respectively, which were better than those of 63.64% (35/55), 30.9% (17/55) in bone-setting group and 58.9% (33/56), 50.0% (28/56) in abdominal acupuncture group, separately (all P < 0.05). Moreover, the long-term curative and markedly effective rate in abdominal acupuncture group was superior to that in bone-setting group (P < 0.05).</p><p><b>CONCLUSION</b>Abdominal acupuncture plus Long's bone-setting manipulation has significant efficacy of either short or long-term on CSR, which is superior to the efficacy of either simple abdominal acupuncture or Long's bone-setting manipulation and indicates superimposed effect. Hence, it is one of the better approaches in CSR treatment.</p>

The problem and progress of gene therapy vectors of tumor in clinical application / 西安交通大学学报(医学版)

It is critical to construct safe,efficient and controllable vectors in gene therapy of tumor.The vectors available include viral and non-viral vectors.However,there are numerous problems to be solved.The current progresses focus on studies of safety,high efficiency and combination of multifunctional gene.