China ; epidemiology ; Humans ; Occupational Diseases ; epidemiology ; Occupational Health ; Rural Population ; statistics & numerical data

Adult ; China ; Follow-Up Studies ; Humans ; Middle Aged ; Mining ; Rural Population ; Silicosis ; mortality

Adult ; China ; Humans ; Middle Aged ; Occupational Health Services ; Pneumoconiosis ; prevention & control ; Universal Precautions

Background Pregnancy-induced hypertension syndrome (PIHS) appears retinopathy.Optical coherence tomography (OCT) and contrast sensitivity (CS) has been widely used in ophthalmology, but the application of OCT and CS in PIHS fundus lesions is less reported.Objective This study was to assess fundus changes of PHIS by using OCT and CS.Methods Two hundred and thirty-three eyes of 116 PIHS patients with fundus diseases were enrolled from January 2011 to January 2014 in the Cangzhou Central Hospital.One hundred eyes of fifty normal pregnant women were collected at the same period.Best corrected visual acuity (BCVA), fundus examination, OCT, CS were performed on these subjects.The CS values and BCVA between normal pregnant woment and PIHS patients were compared by independent samples t test.The correlation between BCVA grade and CS grade, OCT grade and CS grade, OCT grade and BCVA grade was calculated by trend x2 test and Gamma rank correlation analysis.The study was approved by the Ethics Committee of Cangzhou Central Hospital, all the subjects signed informed consent.Results OCT results showed that 172 eyes were abnormal (65.15％) ,including 94 eyes with neurosensory serous retinal detachment (54.65％) ,40 eyes with pigment epithelium and the ellipsoid zone change (23.26％) and 38 eyes with optic disc edema,retinal hemorrhage and other changes (22.09％).The CS values in each spatial frequency and the BCVA in the PIHS group were significantly lower than those in the normal control group (all at P ＜ 0.05).The OCT examination result was positively correlated with BCVA in the PIHS group (G=0.807,x2=93.418,both at P =0.000).The CS value under the 6.0 c/d had the best correlation with BCVA (G=0.820,x2=97.397, both at P=0.000).The OCT examination result was positively correlated with CS under the 6.0 c/d(G=0.932,x2 =126.376,both at P=0.000).Conclusions Combination of fundus examination,OCT and CS can objectively and comprehensively assess the morphology and function of retinopathy in PIHS patients,which provide the basis for the clinical diagnosis and timely treatment.

Using Vibrio fluvialis Ⅱ as host bacteria, 19 bacteriophages have been isolated from the 76 samples which were collected from Haliotis discus hannai ～growing seawater in Dalian marine culture company Dalian, liaoning province from May in 1996 to August I 1997. Ultrastructure of 19 bacteriophages were observed with electron to Bradley the results showed that of these bacteriophages belonged to Bradley A type, they have hexagonal heads of bacteriophages were identified with VP1,VP2,VP4,VP8 as representatives respectively. The phages remain stable at pH6. 0～10. 0, moreover VP2,VP4 and VP8 are rather stable at basic pHs. Although the characterization of heat inactivation course of VP4 is different from others, four phages are sensitive to heat and inactivated at 80℃ in 5 minutes. One step growth experiment showed that the eclipse period of VP1,VP2,VP4,VP8 are sensitive to heat and the eclipse period of VP1, VP2, VP4, VP8 are 42, 30, 46, 28 minutes. In this experiment we have isolated at least four different types phages, it suggest that in fact there is a population of phages in the seawater environment. The result of this study provided a way to find the potential value of phages as an indicator of pathogenic microorganisms Vibrio fluvilis Ⅱ in marine environment.

Objective To explore whether LDL and oxLDL may induce kidney tubular epithelial-mesenchymal transition (EMT) and its mechanism. Methods The second generation human kidney tubular epithelial cells (TECs) were cultured for 24 hours in different conditions as (1) serum free as control, (2) treated with LDL (50 ?g/ml) , (3) treated with oxLDL(50 ?g/ml), (4) treated with LDL(50 ?g/ml) plus PD98059(5 ?mlo/L) , (5) treated with oxLDL(50 ?g/ml) plus PD98059 (5 ?mol/L). The expression of cytokeratin, E-cadherin, ?-SMA and vimentin was assessed by immunofluorescence and Western-blot. Western-blot was also performed to test the expression of collagen I and phospho-ERKl/2MAPK and phospho-GSK-3?. Results oxLDL was more potently in inducing tubular EMT than LDL at 24 hours as demonstrated by de novo a-SMA expression, increased expression of vimentin, partial loss of cytokeratin and reduction of E-cadherin expression by TECs. The expression of collagen I and phospho-ERKl/2MAPK and phospho-GSK-3? was increased in TECs stimulated by LDL or oxLDL. MAPK inhibitor (PD98059) inhibited the phosphorylation of GSK-3P and almost completely blocked oxLDL-induced tubular EMT. However, PD98059 alone was able to inhibit LDL-induced tubular EMT partially. Conclusions oxLDL is more potently in inducing tubular EMT than LDL. The ERKl/2MAPK-GSK-3? signaling pathway mediates the LDL or oxLDL-induced tubular EMT.

Objective To investigate the influence of high intensity focused ultrasound(HIFU) ablation therapy on pregnancy outcomes in the patients with adenomyosis(AM).Methods Twenty patients with AM and successful pregnancy after HIFU ablation in Chongqing Haifu Hospital from April 2011 to February 2016 were selected.Their pregnancy and delivery situation were retrospectively analyzed.Results After HIFU treatment,the symptoms of dymenorrhea and menorrhagia were significantly improved compared with before operation(P＜0.05).The average fertilization time after HIFU was(8.75 ± 6.23) months,among them 11 cases succeeded in delivery,5 cases had spontaneous abortion,1 case was ectopic pregnancy,1 case took artificial abortion and 2 cases were still in pregnant period all cases had no uterime rupture during pregnant or delivery period.Neonateswere healthy.Conclusion HIFU ablation is an effective mode for treating AM and can be used in the patients with AM and birth demand.

Objective To evaluate the effectiveness of moderate aerobic exercise intervention for patients with Alzheimer's disease. Methods Randomized Clinical Trials(RCTs) that assessed the effectiveness of aerobic exercise intervention for patients with Alzheimer's disease were reviewed using multiple electronic databases systematically. Data were analyzed by RevMan 5.2.0 version. Results Eight RCTs were included. Meta-analysis indicated that moderate aerobic exercise could improve the score of MMSE(WMD=1.58,95%CI:0.63~2.53,P<0.01),reduce the score of Alzheimer's disease assessment scale-cognitive subscale(ADAS-Cog)(WMD=-4.06,95%CI:-6.83~-1.28,P<0.01) and the score of Neuropsychiatric Inventory(WMD=-3.97,95%CI:-5.69~-2.25,P<0.01). Conclusion Moderate Aer-obic exercise can improve cognitive function of Alzheimer's patients,and improve their neuropsychiatric symptoms.

Objectives To analyze the relationship between phosphorylation of serine-3 of cofilin1 and Taxol resistance of ovarian cancer and to evaluate the prognostic value of cofilin1 phosphorylation in estimating ovarian cancer survival using clinical samples.Methods Wild type (WT) plasmids with over-expression of wild cofilin1,S3L plasmids with over-expression of cofilin1 and inhibited phosphorylation at serine-3,and siRNA-C plasmids with down-regulation of cofilin1 were constructed using molecular biology techniques.After the SKOV3 and SK-TR30 cell-lines were transfected with these plasmids,changes in biological characteristics and drug resistance after instant transfection were compared.Fifty-one elderly female patients with microscopically confirmed ovarian cancer,who had received chemotherapy with Taxol and cis-platinum (TC)after surgery,including 30 chemo-sensitive and 21 chemo-resistant cases,were recruited in this study.Immunohistochemical methods were used to detect the expression of cofilinl and phosphorylated cofilin in tissue sections from the two groups.Progression free survival(PFS)was analyzed.Results Compared with the control group,the proportion of cells increased at the G0/G1 phase(P=0.034)and decreased at the S phase (P=0.031),and the apoptosis rate decreased(P=0.020),in SKOV3 cells with high expression of cofilin1.However,these characteristics disappeared when the wild type was replaced with the inactive mutant S3L.When cofilin1 expression was down-regulated in SK-TR30 cells,the proportion of cells at the G0/G1 phase decreased(P=0.020).The expression of cofilin1 was detected in 56.7 ％ (17/30)and 57.1％ (12/21),respectively,sections of ovarian tumor tissues of the chemo-sensitive and chemoresistant groups,and there was no statistic difference (x2=0.332,P =0.943)between the two groups.The expression of phosphorylated cofilin was much higher in the chemo-resistant group (85.7％ or 18/21)than in the chemo-sensitive group (53.3％ or 16/30),and the difference was statistically significant(x2=5.829,P=0.016).The higher expression of phosphorylated cofilin was also correlated with shorter PFS(x2 =21.440,P＜0.01,95％ CI:0.068-0.883),especially in the chemo-sensitive group.Conclusions Serine-3 phosphorylation status of cofilin 1 is associated with paclitaxel resistance in ovarian cancer,but the underlying mechanisms of regulation need further investigation.