Objective To analyze the activity of paraoxonase (PON1) and explore the relationship of PON1 and oxidative stress with systemic inflammation response in the acute exacerbation phase and stationary phase in patients with chronic obstructive pulmonary disease (COPD). Methods Serum PON1 activity was measured by phenylacetate in 38 patients with COPD and 30 healthy people. The activity of glutathione peroxidase (GSH-Px) was detected by improved Hafeman method. Total antioxidant capacity (TAC) was measured by eolorimetry and malondialdehyde (MDA) level was measured by thiobarbituric acid colouration method. The interleukin-6 (IL-6) and interleukin-8 (IL-8) levels were detected by radioimmunoassay. The level of C-reactive protein (CRP) was measured by immune turbidimetry. Results In the acute exacerbation phase, the activity of serum PON1 was significantly lower in COPD group than in control group [(98.03±42.40)×103U/L vs. (136.00±60. 50)×103U/L, t=4.962, P<0.01], and it was negatively related to the IL-8 level (r= - 0. 589, P<0.01) and positively related to FEV1% (r= 0. 434, P<0. 05). The activity of GSH-Px was negatively related to the IL-6 level (r=-0. 362, P< 0. 05). In the stationary phase of COPD group, the activity of serum PON1 had no statistical difference compared with control group[(131.50±53.65))×103U/L vs. (136. 00±60.50)×103U/ L, t=2. 457, P>0. 053, and it was negatively related to the IL-8 level (r=-0. 563, P<0.05). Conclusions Serum PON1 activity is significantly decreased in acute exacerbation phase of COPD group compared with control group and it is positively related to FEV1%. The oxidative stress is closely related to systemic inflammation response in patients with acute exacerbation of COPD.

Background Selective laser trabeculoplasty (SLT) plays lowing-intraocular pressure (IOP)effect by irradiating pigmented trabecular cells selectively using 532 nm Nd:YAG laser.However,its affect pattern is not fully known.Objective This study was to establish a human trabecular cells (HTCs) model of SLT effect,and to observe the morphological changes of HTCs after they were exposed to different energies of SLT.Methods Immortalized HTCs were incubated in DMEM/F12 with pigmental granules for 16 hours (overnight) to prepare pigmented trabecular cells.The cells were irradiated with modified laser lens with the spot of 400 μm and emitting duration of 3 ns.The energy scale of 0.2 mJ was set for standardized energy and 0.1 mJ was used as the low energy.The morphology and ultrastructure of the cells were examined under the light microscope and transmission electron microscope 1 hour,4,8,12,24 hours after irradiation.Trypan blue staining and TUNEL fluorescence staining were used to evaluate the death and apoptosis of the cells after laser irradiation.Results The brown pigment particles were seen in cytoplasm around nuclei of trabecular cells after cultured for 16 hours.After laser irradiation,there was no obvious change in the shape of nonpigmented trabcular cells,but a 400 μm spot was found in the pigmented trabecular cells under the light microscope,and the pigmented particles released as the cell disruption.After 0.2 mJ laser irradiation,cell loss zone was seen at the center of the laser spot,and the positive cells for trypan blue and TUNEL staining were found;while the abnormal manifestations were slight after the 0.1 mJ irradiation.With the lapse of the time,the number of positive staining cells was gradually decreased.Twenty-four hours after laser irradiation,proliferative trabecular cells emerged and migrated to the center area of laser spot.Statistical analysis showed that the numbers of the positive cells for trypan blue and TUNEL staining were significantly reduced in the lower energy group in comparison with the standardized energy group at various time points (all at P＜0.001),and those of both energy groups were gradually reduced with lapse of time with the significant differences between any two time points (all at P＜0.01).Conclusions An in vitro laser effect model of HTCs can be established by exposing pigmented HTCs to SLT laser.After exposed to SLT,the gasification,necrosis-like death,apoptosis-like change appear at the laser center.The laser destroyed cells can be replaced by proliferative cells with the lapse of time.Low-energy laser irradiation cause a similar morphological change of the cells to high-energy irradiation,but the number of abnormal cells is much less.

Background Selective laser trabeculoplasty (SLT) can increase the outflow of aqueous humor and reduce the intraocular pressure of patients with open angle glaucoma,but its mechanism is unknown.To investigate the mechanism of SLT would improve the therapeutic effect of SLT.The aqueous outflow resistance in trabecular meshwork was affected by the extracellular matrix (ECM).Matrix metalloproteinase-3 (MMP-3) and MMP-9 were closely related to ECM degradation in trabecular meshwork.Objective This study was to observe the effects of SLT on the expressions MMP-3 and-9 in human trabecular ceils in vitro.Methods Immortallized human trabecular cells were cultured with pigment particles mixed suspension for 16 hours and incubated overnight.Then the cells were irradiated with Q switch frequency doubling 532 nm Nd:YAG laser to establish SLT-effective cells with the energy of 0.2 mJ,spot diameter of 400 μm and pulse duration of 3 ns.The expressions of MMP-3 mRNA and MMP-9 mRNA in the cells were detected by fluorescence quantitative real time PCR before and 1 hour and 4,8,12,28 hours after exposure of laser.The concentrations of MMP-3 and MMP-9 in the medium were assayed using ELISA 1 hour and 4,8,12,28 hours after exposure of laser and compared between the non-irradiation group and the irradiation group.Results The relative expressing levels of MMP-3 mRNA were 1.00,1.32±0.12,2.08±0.05,2.34±0.04,2.77± 0.05 and 2.49±0.27 in the non-irradiation group and irradiation for 1 hour and 4,8,12,28 hours after exposure of laser SLT,showing a significant difference among the groups (F =15.966,P=0.007),and relative expressing levels of MMP-3 mRNA were significantly higher in various time points after laser irradiation than those of the non-irradiation group (all at P＜0.05).The relative expressing levels of MMP-9 mRNA were 1.00,0.91 ±0.10,1.27 ± 0.07,1.46±0.07,1.69±0.09 and 0.87±0.09 in the non-irradiation group and irradiation for 1 hour and 4,8,12,28 hours after exposure of SLT,which was considerably different among the groups (F =30.526,P =0.005),and significant increased values were seen in the 4,8 and 12 hours after irradiation compared with the non-irradiation group (all at P＜0.05),with highest expression in the irradiation for 12-hour group.The concentrations of MMP-3 and MMP-9 proteins in medium were significantly increased in various time points after laser exposure in comparison with the control group (all at P＜0.05).Conclusions The expressions of MMP-3 and MMP-9 in human trabercuolar cells upregulate and the secretion ability of human trabecular cells to MMP-3 and MMP-9 proteins improves in early stage of SLT in vitro.However,these procedures gradually diminish with the lapse of time.

BACKGROUND: Therapeutic effect on pterygium mainly focuses on studying surgical technique, assistant therapy methods,and recurrence rate following excision of pterygium; however, whether race factor is associated with occurrence, development, and recurrence of pterygium remains still unknown.OBJECTIVE: To compare the therapeutic outcomes in different race patients with pterygium treated using corneal limbal stem cell autograft combining with excision of pterygium.DESIGN, TIME AND SETTING: Retrospective case analysis, performed in the Department of Ophthalmology, Zhongshan Hospital Affiliated to Xiamen University between January 2000 and June 2006. PARTICIPANTS: 1 44 (152 eyes) primary cases were collected from Xiamen and 54 (54 eyes) relapsed Negroes were from Africa. There were no significant differences in age, sex, and pterygium length between the two groups (P 0.05).METHODS: 198 subjects were treated by excision of pterygium under a microscope, in which pterygium tissue was not found on the surface of cornea. A free transplantation of the superotemporal limbus with an adjacent piece of thin conjunctiva was placed in the excision area. All cases were followed-up to grade the appearances of the sites 6 weeks, 6 and 12 months after excision (grade 1 implied normal appearance, and grade 4 implied the relapse). MAIN OUTCOME MEASURES: Relapse, pterygium grading, and complication after corneal limbal stem cell autograft combining with excision of pterygium. RESULTS: No relapse was found at 6 weeks after operation. The recurrence rate of Chinese Han people and Africa black people were 6.6% and 14.8% respectively at 6 months, and 11.8% and 24.5% at 12 months. There was significant difference in the recurrence rate between the two races (t=4.607, P= 0.032). In addition, there were significant differences in the pterygium grading between the two groups at 6 weeks (x2=15.608, P < 0.01 ), and Chinese people recovered better. Contrarily, there was no statistical difference at 6 months and 12 months (x2=4.401, 6.206; P 0.05). Few complications were found except superficial scar of cornea and persistent irritation of ocular surface. CONCLUSION: Limbal stem cell autograft combining with excision of pterygium under a microscope can completely remove pterygium with minimal invasion, light postoperative response and low rate of recurrence. The relapse of black cases is higher than Chinese patients.

Ataxins ; Humans ; Male ; Middle Aged ; Nerve Tissue Proteins ; genetics ; Spinocerebellar Ataxias ; genetics ; Trinucleotide Repeats

Objective To learn 2009~2014 Shaanxi Province sentinel surveillance six classes of HIV infection focus groups, and estimates of HIV-1 new infection.Methods Used enzyme-linked immunosorbent assay (ELISA)and Western blot (WB)experiments for the 2009~2014 HIV sentinel surveillance Shaanxi Province Category 6 focus groups conducted a total of 77 778 HIV antibody screening and confirmatory testing estimates of HIV-1 new infection.Results 2009~2014 men who had sex with men and people with HIV infection rate were 3.75%,8.77%,3.50%,5.00%,6.20% and 5.75%,and a slow upward trend;HIV-1 new infection were 5.04%,8.96%,5.01%,5.95%,4.68% and 6.39%,the overall downward trend. Young students,drug addicts,sex workers,pregnant women,and male STD clinic attenders five people with HIV infection and HIV-1 new infection were emerging to remain low.But male STD clinic attenders of HIV infection and HIV-1 new in-fection was emerging slowly rising trend.Conclusion Shaanxi MSM HIV infection and HIV-1 new infection were high,but HIV-1 new infection had decreased slowly.Emerging trend should continue to increase the population of the intervention ef-forts.The infection rate in other monitoring population was relatively low but a few people on the rise,the need to take the necessary coping methods.

Objective To identify the specific genotype and analyze clinical features of spinocerebellar ataxias (SCAs) pedigree in the region of Yunnan Province.Methods Fourteen SCAs pedigrees and 183 blood samples of the family members were collected between January 2011 and July 2014 from Department of Neurology,First Affiliated Hospital of Kunming Medical College.Polymerase chain reaction (PCR) amplification,agarose gel electrophoresis and DNA sequencing technologies were utilized to identify the specific genotype of SCAs pedigree.Presymptomatic tests were carried out and the clinical features and genetic test results of patients were carefully analyzed.Results SCA3 was the most common subtype of SCAs in the Han nationality of Yunnan region.Nine of the 14 families were SCA3,only one family was SCA2.Additionally,there were four SCAs families that remained indeterminate.The patients with di-allele mutations (46/77) of SCA3 gene had early onset,rapid progression and serious clinical symptoms.Hereditary SCA3 and autonomic dominant polycystic kidney disease can happen simultaneously in a family.The proband SCA3 gene' s CAG repeat number is 28/76,and repetitions of the mutation allele are in all range.The PKD1 gene exon 23 is found to be in abnormal sequence.Conclusions SCA3 is the most common subtype of SCAs in the Han population of Yunnan region.There are 15/46 incomplete penetrance nutation and 46/77 di-allele mutations.It is possible that di-allele mutations make the disease worse and accelerate clinical course progression.SCA3 and polycystic kidney disease can uncommonly happen simultaneously in a family,which perhaps suggests there are interactions between the two disease-virulence genes.

OBJECTIVEThrough comparative study on pulmonary function damage of coke oven workers exposed to coke oven emissions with the same group before and after five years, and further explore the relationship between the coke oven emissions and injury in pulmonary function of coke oven worker.

METHODSSelect a coking plant in Shanxi 165 coke oven workers (exposed group) and 52 auxiliary workers (control group) for the study, using a uniform questionnaire to collect workers' personal information. Fixed workplace air samples collected periodically. Air samples of benzo (a) pyrene concentrations was measured by high pressure liquid chromatograph. Pulmonary function of research object was measured by portable spirometer respectively in 2009 and 2013, and comparative analysis on it.

RESULTSThe concentration of B(a)P was no significant difference in the same area between 5 years in 2009-2013. Compared with 2009, 2013 control workers lung function index and the abnormal rate had no significant difference (P > 0.05). But FVC%, FEV1.0%, MVV%, VC% and FEF25% of exposed workers in 2013 was significantly lower than in 2009, FVC%, FEV1.0%, VC% and FEF25% pulmonary dysfunction rate in 2013 was also significantly higher than in 2009, difference was statistically significant (P < 0.05). Workers emerging pulmonary function abnormalities mainly distributed in furnace roof and side. furnace roof group FVC%, FEV1.0%, VC% additional abnormal number (rate) was significantly higher than furnace floor and the control group (P < 0.05), and furnace side groop was significantly higher than the control group, the difference was statistically significant (P < 0.05). Multivariate Logistic regression analysis showed that after 5 years FVC%, FEV1% and VC% of abnormal lung function emerging adjusted OR of furnace roof workers were 7.939, 5.966 and 4.956. For abnormal of FVC%, FEV1%, VC% and MVV%, the contacting coke seniority is a risk factor. There is a positive interaction between contacting coke seniority and furnace roof (P < 0.05).

CONCLUSIONCoke oven workers lung function damage associated with exposureing to coke oven emissions, coke oven emissions exposure level and exposure time are the main factors of coke oven workers in lung function damage, there is a positive interaction between the two factors.

Air Pollutants, Occupational ; adverse effects ; analysis ; Benzo(a)pyrene ; adverse effects ; analysis ; Cohort Studies ; Coke ; Humans ; Lung ; drug effects ; physiopathology ; Occupational Exposure ; adverse effects ; Respiratory Function Tests ; Risk Factors ; Surveys and Questionnaires

Objective:To evaluate the effects of repetitive transcranial magnetic stimulation (rTMS) on sleep quality in patients with post-stroke sleep disorder (PSSD).Methods:The clinical randomized controlled trials involving PSSD patients who received rTMS were retrieved from nine medical databases. After excluding duplicated references, screening for independent references and risk evaluation, the remaining references were input into RevMan5.4 software for meta-analysis.Results:Twelve eligible literatures were included in the final analysis. Meta-analysis results revealed that after rTMS intervention, there were significant differences in the following terms between the treatment and control groups (all P < 0.05): Pittsburgh sleep quality index score [MD = -2.60, 95% CI (-3.03, -2.17), P < 0.000 01]; sleep latency [MD = -9.69, 95% CI (- 16.87, - 2.50), P < 0.01], sleep efficiency [MD = 8.90, 95% CI (5.41, 12.39), P < 0.01], number of awakenings [MD = -1.15, 95% CI (- 2.26, - 0.04), P = 0.04], awakening duration [MD = -10.95, 95% CI (- 13.30, -8.61), P < 0.01], and rapid eye movement [MD = 4.54, 95% CI (2.24, 6.85), P < 0.01] in polysomnography; brain-derived neurotrophic factor score [MD = 5.29, 95% CI (2.47, 8.11), P = 0.0002]; clinical curative rate [ OR = 4.46, 95% CI (2.75, 7.23), P < 0.000 01]. Conclusion:rTMS can improve the sleep quality in patients with PSSD, which is worthy of clinical promotion.