Air Pollutants, Occupational ; analysis ; Evaluation Studies as Topic ; Facility Design and Construction ; Humans ; Occupational Diseases ; prevention & control ; Occupational Exposure ; analysis ; prevention & control ; Quality Control

A 2,4 -dichlorophenol degrading Pseudomonas strain GI241-1 was isolated from a soil sample. The dienelactone hydrolase gene, designated as dcpD which encodes dienelactone hydrolase involved in transforming cis-2-chloro-dienelactone into 2-chloromaleylacetic acid, was cloned from this bacterium strain. The gene cloning strategy was to construct genomic library after location of its neighbouring gene by Southem blot and to screen the aim transformant by dot blotting. Sequencing results showed that length of dcpD is 702bp. The sequence of dcpD and the deduced amino acid are different from the relative sequences registered in the GenBank.

Objective To investigate the clinical features of infantile cytomegalovirus(CMV) hepatitis with cholestasis.Methods The clinical features of infantile CMV hepatitis with cholestasis were retrospected in 48 cases and the liver function were detected before and after therapy in 23 cases.Results Forty-eight cases of infantile cytomegalovirus hepatitis with cholestasis had different degrees of jaundice, hepatosplenomegaly and abnormal liver functions. After therapy of 23 cases, the clinical symptoms and serum biochemical parameters such as bilirubin, alanine aminotransferase were improved , but serum parameters of aspartate aminotransferase ,alkaline phospholipids and ?-glutamyltransferase had no improvement.Conclusion The theraphy of CMV hepatitis with cholestasis shall be individual.

Objective To investigate the relationship between the promoter of IL-12B gene polymorphism and the susceptibility and clinical features of chronic gastritis and duodenal ulcer with or without Helicobacter pylori(Hp) infection in children and adolescent.Methods Mucosal biopsies were obtained from 132 children and adolescent (patient group),including 100 children with chronic gastritis and 32 children with duodenal ulcer,undergoing an upper gastrointestinal endoscopy for dyspeptic symptoms.Biopsy specimens were stained with hematoxilin and eosin (HE),and gastritis was graded according to the Sydney system.Serology,urease test and histology were taken to assess Hp status.Genomic DNA was obtained from peripheral blood or gastric biopsies of patients and 102 healthy children as normal control group.The promoter of IL-12B +1188A/G gene polymorphism was genotyped by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) and sequencing.The genotype distributions and allele frequencies were compared between the study group and the normal control group,and the association of genotypes with clinicopathological features was studied.IL-12B mRNA level expressions in gastric mucosa were confirmed by reverse transcription PCR biopsy-based tests.Results The genotype distributions and allele frequencies of IL-12B +1188A/G gene polymorphisms were similar in gastric upper gastrointestinal diseases and healthy subjects.The IL-12B +1188A/G gene polymorphisms were not associated with Hp status.IL-12B+1188A/G gene polymorphisms did not affect IL-12B mRNA level expressions and were not associated with the degree of antrum chronic inflammation.Conclusions These data suggest that IL-12B+1188A/G gene polymorphisms are not associated with susceptibility to chronic gastritis and duodenal ulcer in children and adolescent.

In this study, daphnetin and its major metabolites in the intestinal wall of rats were identified by liquid chromatography and quatrupole-time of flight mass spectrometry. Perfusion fluid of duodenum, jejunum, ileum and colon were collected separately for 2 hours from the rat intestine following perfusion with daphnetin. The metabolites of daphnetin in the perfusion fluid of different intestine segments were analyzed by the liquid chromatography and quatrupole-time of flight mass spectrometry. It is shown that the parent drug daphnetin and four metabolites were found in the perfusion fluid of duodenum, jejunum and ileum. However, no metabolites were found in the colon. Among the four metabolites, two daphnetin sulfates (m/z 257) were first discovered as the phase II metabolites of daphnetin in rats, which revealed a new way of daphnetin metabolism in rats.
Animals ; Chromatography, High Pressure Liquid ; Colon ; metabolism ; Duodenum ; metabolism ; Ileum ; metabolism ; Intestines ; metabolism ; Jejunum ; metabolism ; Male ; Perfusion ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Spectrometry, Mass, Electrospray Ionization ; Umbelliferones ; metabolism ; pharmacokinetics

Objective To investigate effects of different times and procedures of postoperative radiation and chemotherapy on treatment efficacy of high-grade gliomas.Methods A prospective clinical trial was conducted in 71 patients with high-grade gliomas (HGG); they were separated randomly into two groups:one group including 39 patients received chemo-radiotherapy and adjuvant chemotherapy sequentially (RC+C) and the other group including 32 patients received neo-adjuvant chemotherapy and chemo-radiotherapy and adjuvant chemotherapy sequentially (C+RC+C).The clinical benefit rate (CBP),progression free survival (PFS) and overall survival (OS) were followed up after the treatment.Results No significant difference on CBP 5 months after treatment was noted between the two groups (P＞0.05),but the CBP in the C+RC+C group (87.5％) was significantly higher than that in the RC+C group (66.7％)8 months after treatment (P＜0.05).No significant difference on OS was noted between the two groups.The median PFS of patients in C+RC+C group was 11.5 months while that in the RC+C group was 8.6 months; the PFS of patients in C+RC+C group was significantly longer that in the RC+C group (P＜0.05).Conclusion Procedure of C+RC+C can prolong the PFS of patients with HGG.

OBJECTIVETo investigate the correlation of vasectomy with the risk of prostate cancer in Chinese men.

METHODSWe systematically searched the databases CNKI, VIP, Wanfang, PubMed, Embase, and Cochrane Library for the literature relating the relationship between vasectomy and the risk of prostate cancer in Chinese males up to December 2014. According to the inclusion and exclusion criteria, two investigators independently selected the eligible publications, evaluated their quality, and extracted relevant information, followed by a meta-analysis with the software STATA 12.0.

RESULTSNine studies were included in the analysis involving 1 202 cases of prostate cancer and 4,496 controls. Random-effect model analysis revealed no statistically significant correlation between vasectomy and the risk of prostate cancer (OR = 1.05; 95% CI 0.62-1.79), with an obvious heterogeneity (P < 0.001, I2 = 85.7%). No significant publication bias was found among the included studies (Egger, P = 0.824; Begg, P = 0.348).

CONCLUSIONThe results of our meta-analysis do not support the association of vasectomy with the increased risk of prostate cancer in Chinese population.

Asian Continental Ancestry Group ; China ; Humans ; Male ; Prostatic Neoplasms ; ethnology ; etiology ; Risk Assessment ; Vasectomy ; adverse effects

OBJECTIVEEstablishment of determination method of carbon disulfide in charcoal tube with low toxicity solvents desorption-gas chromatography.

METHODSFour types of solvent with low toxicity are applied respectively as substitution of benzene to desorb the carbon disulfide in samples of charcoal tube. The signal strength and desorption efficiency of the detector are compared by using different solvents.

RESULTSChloroform has been considered as the best alternative solvent of benzene. Carbon disulfide has a good linearity (R = 0.9997) over the concentration of 0 ∼ 54.7 µg/ml, detection limit can reach 0.2 µg/ml. When the sampling volume is 3.0 L, the minimum detectable concentration is 0.07 mg/m(3).

CONCLUSIONWith the use of chloroform, the health hazard to laboratory personnel and environment pollution as well as the costs of experiments are reduced.

Air Pollutants, Occupational ; analysis ; Carbon Disulfide ; analysis ; Chromatography, Gas ; methods ; Solvents ; analysis ; Workplace

The aim of the present study was to examine the relationship between the protein expression of vascular endothelial growth factor (VEGF) and lymph node metastasis (LNM) in papillary thyroid cancer (PTC).VEGF-related articles that had been published until August 2016 were searched from the PubMed,EMBASE,and MEDLINE to identify the risk factors of LNM in PTC.RevMan 5.3 software was used for the meta-analysis.Finally,9 articles met the inclusion criteria and were included in our meta-analysis.LNM was found to be present in 176 of 318 patients (57.8％) with high VEGF expression and in 71 of 159 patients (47.0％) with low VEGF expression.The overall OR was 2.81 (95％ confidence interval,1.49-5.29).LNM occurred more frequently in patients with high VEGF expression than in those with low VEGF expression (P=0.001).Heterogeneity was markedly decreased in the subgroup analyses of LNM in terms of the patients' country of origin and the detection methods.Our meta-analysis concluded that the VEGF protein expression is associated with LNM in PTC.

This study is to evaluate the therapeutic effect of fibroblast growth factor 21 (FGF21) on type 2 diabetic mice model and to provide mechanistic insights into its therapeutic effect. Type 2 diabetic animal model was established with high calorie fat diet and low dose streptozotocin (STZ) injection. Mice were then randomized into 5 groups: model control, FGF21 0.25 and 0.05 μmol x kg(-1) x d(-1) groups, insulin treatment group. Ten age-matched normal KM mouse administered with saline were used as normal controls. Serum glucose, insulin, lipid products and the change of serum and liver tissue inflammation factor levels between five groups of mouse were determined. The results showed that blood glucose, insulin, free fatty acids (FFAs), triglycerides, and inflammatory factor average FGF-21 of type 2 diabetes model group and normal control group were significantly higher (P < 0.01), while compared with insulin group, no difference was significant. Average blood glucose, insulin, blood lipid and inflammatory factor of FGF-21 treatment group compared with type 2 diabetes group was significantly lower (P < 0.01) and insulin group has no difference with the model control group. The results of OGTT and HOMA-IR showed that insulin resistance state was significantly relieved in a dose-dependent manner. Thus, this study demonstrates that FGF-21 significantly remits type 2 diabetic mice model's insulin resistance state and participates in the regulation of inflammatory factor levels and type 2 diabetes metabolic disorders.
Animals ; Blood Glucose ; Diabetes Mellitus, Experimental ; drug therapy ; Diabetes Mellitus, Type 2 ; drug therapy ; Diet, High-Fat ; Fatty Acids, Nonesterified ; blood ; Fibroblast Growth Factors ; pharmacology ; Insulin ; blood ; Insulin Resistance ; Mice ; Streptozocin ; Triglycerides ; blood