Objective To explore the clinical value and the correlation of parathyroid hormone and osteocalcin in hemodialysis patients.Methods According to the dialysis duration of hemodialysis patients,they are divided into the four groups,Ⅰ (dialysis time ＜2 years),Ⅱ (dialysis time 2-5 years),Ⅲ(dialysis time ＞5-10 years),Ⅳ (dialysis time ＞ 10 years),50 cases were randomly selected from each group,50 cases of healthy people were taken as a control group,to detect the contents of PTH and N-MID in serum and analyze the results.Results The content of PTH in hemodialysis patients of Ⅰ,Ⅱ,Ⅲ,Ⅳ group were (170.9 ± 45.9) ng/L,(405.4 ± 65.3) ng/L,(717.1 ± 199.6) rng/L,(1 555.6 ± 417.8) ng/L,the content of N-MID were (79.23 ± 31.62) μg/L,(140.22 ± 50.98) μg/L,(496.11 ± 159.49)μg/L,(617.9 ± 386.18)μg/L,the content of PTH and N-MID in control group were (6.85 ± 3.74) ng/L,(16.6 ± 8.57) μg/L,PTH and N-MID levels of the four hemodialysis patients groups were significantly higher than those of normal control group,the differences had statistically significance(PTH levels of the four groups compared with the control group:group Ⅰ compared with the control group,t =25.199,P ＜0.01 ;group Ⅱ compared with the control group,t =43.091,P ＜0.01 ;group Ⅲ compared with the control group,t =25.402,P ＜0.01 ;group Ⅳ compared with the control group,t =26.211,P ＜0.01 ;N-MID levels of the four groups compared with the control group:group Ⅰ compared with the control group,t =13.518,P ＜ 0.01 ; group Ⅱ compared with the control group,t =16.909,P ＜ 0.01 ; group Ⅲ compared with the control group,t =21.229,P ＜ 0.01 ; group Ⅳ compared with the control group,t =11.007,P ＜ 0.01),the content of PTH and N-MID in Ⅰ,Ⅱ,Ⅲ,Ⅳ groups had statistically significance (four groups of PTH levels compare to each other:group Ⅰ compared with group Ⅱ,t =20.774,P ＜0.01 ;group Ⅰ compared with group Ⅲ,t =18.858,P＜0.01;group Ⅰ compared with group Ⅳ,t =23.295,P＜0.01;groupⅡ compared with group Ⅲ,t =10.495,P ＜ 0.01 ; group Ⅱ compared with group Ⅳ,t =19.233,P ＜ 0.01 ; group Ⅲ compared with group Ⅳ,t =12.805,P ＜ 0.01 ; Four groups of N-MID levels compare to each other:group Ⅰ compared with groupⅡ,t=7.189,P ＜0.01;group Ⅰ compared with group Ⅲ,t =18.130,P ＜0.01 ;group Ⅰ compared with group Ⅳ,t =9.830,P ＜ 0.01 ;group Ⅱ compared with group Ⅲ,t =15.029,P ＜ 0.01 ;group Ⅱ compared with group Ⅳ,t =8.671,P ＜ 0.01 ; group Ⅲ compared with group Ⅳ,t =2.061,P ＜ 0.05).Conclusion PTH levels were positively correlated with N-MID content in hemodialysis patients,high PTH hemodialysis patients should prevent osteoporosis early and to take appropriate treatment.

OBJECTIVE:To provide reference for rational use of TCM injection in the clinic. METHODS:In retrospective survey,the application of TCM injections in 3 hospitals from Changshu area during 2013-2015 were analyzed statistically in re-spects of consumption sum,annual growth rate,constituent ratio,DDDs,B/A,DDC,etc. RESULTS:During 2013-2015,in the sample hospitals,consumption sum of TCM injections in 2014 and 2015 declined by 5.27% and 15.92%,compared with last year. The proportion of consumption sum of TCM injections in total consumption sum were 4.40% in 2013,3.86% in 2014 and 3.13%in 2015. Top 3 TCM injections in the list of consumption sum and DDDs were blood activating and stasis eliminating drugs,the re-suscitation and reviving yang first aid class drugs and tonic drugs. The top single types in the list of consumption sum were Xing-naojing injection,Shuxuetong injection,Xuebijing injection,Shenmai injection and Xue shuantong for injection;the top single types in the list of DDDs were Shenmai injection,Reduning injection,Shuxuetong for injection,etc. B/A of Shenmai injection and Reduning injection were higher,while DDC of Xuebijing injection was the highest. CONCLUSIONS:The utilization of TCM injec-tion is basically reasonable,and shows decreasing tendency in sample hospitals,but great importance should be attached to the safe-ty and effectiveness of TCM injections and reasonable choice.

Objective To understand the status of Toxoplasma gondii infection in women with adverse pregnancy outcomes in Longhua region,Hebei Province. Methods A total of 393 women with adverse pregnancy outcomes were chosen as respon-dents in the Longhua County Maternal and Child Health Care Center between January 2013 and June 2016 and were divided into an acute infection group,a previous infection group,and an active infection group according to the test results. Totally 256 wom-en without adverse pregnancy outcomes were selected as a control group. IgM and IgG antibodies to T. gondii were detected by using ELISA in each group. The risk factors of T. gondii infection were surveyed by questionnaires. Results The T. gondii infec-tion rate of the women with adverse pregnancy outcomes was 27.23%(107/393),which was significantly higher than 8.20%(21/256)in the control group(χ2=35.46,P<0.01). The rates of acute infection,previous infection,active infection in the wom-en with adverse pregnancy outcomes were 6.87%(27/393),18.58%(73/393),and 2.54%(10/393)respectively,which was significantly higher than those[1.17%(3/256),7.03%(18/256),0(0/256)]in the control group(χ2=11.43,17.15,7.90 re-spectively,P<0.01). The ratios of the career in contact with raw meat,feeding pets(dog and cat),tasting raw meat,chopping board regardless of uncooked or cooked food,frequently eating rinsing boiler or barbecue,frequently eating outside of the wom-en with T. gondii infection were significantly higher than those of the women without T. gondii infection(χ2 =12.08,29.23, 8.55,13.41,7.28,6.06 respectively,P<0.01 or 0.05). Conclusions T. gondii infection could lead to serious adverse preg-nancy outcomes. Therefore,to avoid contacting with pets,not eating undercooked food,and strengthening personal health pro-tection are the important keys to avoid T. gondii infection.

Ovbective To evaluate whether the deleterious effect of cardiopulmonary bypass (CPB) mediated by oxygen free radicals could be prevented by controlling PaO 2 in cyanotic children. Methods Cyanotic pediatric patients undergoing cardiac surgery (n=38) were randomly allocated into 2 groups. The groups matched in respect to sex,age,body surface area and preoperative ventricular function. Group H (n=18) had CPB initiated at a FiO 2 of 0.8,group L (n=18) had CPB initiated at a FiO 2 of 0.4. SOD and MDA were determined in arterial blood sample before CPB,30 minutes after initiation of CPB and 30 minutes post CPB. Various pulmonary parameters were determined 10 minutes after intubation,30 minutes after CPB,the 2nd hours and the 6th hours in the intensive care units. Results At the 6th hours in ICU,the mean postoperative increase in peak airway pressure and P(A-a)O 2/PaO 2 in group H was significant higher than that in group L(P

Objective To clarify the effec.t of smoking and related factors in symptomatic osteoarthritis disease,and explore the method to analyze the osteoarthritis (OA) risks.Methods Based on the investigation of 7 126 rural residents in Shanxi province,according to whether patients had related factors of symptomatic osteoarthritis in longitudinal axis arthrosis,the single factor and multiple factors logistic regression analysis were adopted to reveal the interaction between risk factors,and the interaction on multiplicative scale and the interaction on additive scale were both analyzed;interaction on multiplicative scale was estimated by OR,the interaction on additive scale was estimated by the relative excess risk due to interact (RERI),the attributableproportion due to interaction (AP),and the synergy index (S).Results The survey included 7 126 residents,in which 1 480 cases osteoarthritis patients in vertical axis joint with the prevalence of 20.8％.By multiple logistic regression analysis,the whole samples by enter level 0.05 level was stepwisely filtered.The results showed that gender,body mass inlex (BMI),smoking,age,heatable adobe,picky eater,working under coal mine were main influencing factors for the symptomatic arthritis.Balance other influence factors,passive smoking had an effect on arthritis.Aftcr adjusting for weight,smoking was not included in the final model.In the stratified interaction analysis,there was interaction on multiplicative scale between smoking and weight (OR=0.32,P=0.03),and the interaction on additive scale between passive smoking and gender or weight exists [RERI (95％CI) 0.41 (0.01,0.81)＞0,AP(95％CI) 0.25(0.01,0.51)＞0,S=3.04＞ 1].Conclusion The influence of smoking on osteoarthritis is so weak that it could not be a risk factor and its influence on osteoarthritis is initiated via body.

Objective To study the role of prefrontal cortex in maintenance of working memory(WM)using event-related functional MRI(ER-fMRI).Methods Twenty healthy subjects completed a relative lower,high load version of the sternberg item recognition task during ER-fMRI.The brain areas showing activity on average across the two loads for maintenance phase were obtained with group analysis.Load dependent activity was identified with inter-group analysis.Results The maintenance phase were relevant to the activity in dorsolateral prefrontal cortex(DLPFC),ventrolateral prefrontal cortex(VLPFC),parietal lobe,supplementary motor area(SMA)and premotor cortex(PMA).Brain regions including VLPFC showed increased activation for high load level.Conclusion Functional difference but not anatomic difference between maintenance and manipulation in brain may be exist.

Objective To investigate the factor that affecting the prevalence of osteoarthritis in rural areas of Shanxi, China. Methods All the residents above 16-year-old from the villages chosen by multi-stage stratified cluster sampling in Yangcheng County and Pianguan County in Shanxi Province were investigated by COPCORD procedure of WHO. All respondents signed the informed consent forms. Chi-square test and multivariable logistic regression analysis were used for the risk factor analysis. Results Seven thousand one hundred and twenty-six permanent residents in the two counties were investigated, of which 1734 cases of patients with osteoarthritis were identified. Take with or without osteoarthritis as response variables, statistically significant variables in the univariate analysis were substituted into the logistic regression model. Forward method was used for the variable selection. The inclusion criteria set as 0.10. The results showed that, age, room heating and ventilation, marital status, occupation, education, engaged in coal mine work, accompanied cardiovascular disease were the risk factors for osteoarthritis disease. Conclusion There were many factors that affect the prevalence of osteoarthritis in Shanxi rural communities, in which lifestyle may play an important role. Early intervention on risk factors may have a significant effect on reducing the prevalence.

BACKGROUND: Telomerase can maintain the telomere length and avoid cel replicative senescence and apoptosis in somatic cells. Its catalytic subunit cal ed telomerase reverse transcriptase has roles in mediating cellsurvival and anti-apoptotic functions. OBJECTIVE: To evaluate the effects of human telomerase reverse transcriptase on amyloid β1-40-induced human embryonic cortical neurons injury. METHODS: Human cortical neurons derived from 12-16 weeks old aborted fetuses were transfected with recombinant adenovirus vector encoding human telomerase reverse transcriptase. Expression of human telomerase reverse transcriptase was evaluated by immunocytochemical staining. Telomerase activity was measured using a PCR-based telomeric repeat amplification protocol enzyme-linked immunosorbent assay kit. Human embryonic cortical neurons were treated with 10 μmol/L ol/L amyloid β1-40 after transfected for 3 days. Cel viability, reactive oxygen species levels and glutathione contents in human embryonic cortical neurons were respectively detected by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay, fluorescent probe 2',7'-dichlorodihydrofluorescein diacetate and chromatometry. RESULTS AND CONCLUSION: Expression of human telomerase reverse transcriptase reached peak at 3 days after transfection, and the telomerase activity was rebuilt; 10 μmol/L amyloid β1-40 could significantly reduce the cel viability of neurons and glutathione content (P < 0.05 and P < 0.01), and increase the reactive oxygen species levels (P < 0.05). The neurons transfected with human telomerase reverse transcriptase gene could be significantly against the toxicity of amyloid β1-40 and increase the cel viability and glutathione content (P < 0.05 and P < 0.01), and decrease the reactive oxygen species levels (P < 0.05). The results indicate that human telomerase reverse transcriptase can protect amyloid β1-40-induced human embryonic cortical neurons injury

Objective To study the prevalence of symptomatic osteoarthritis (OA) in rural areas of Shanxi,China.Methods All the residents above 16 years old from the villages chosen by multi-stage stratified cluster sampling in Yangcheng County and Pianguan County in Shanxi Province were investigated with COPCORD procedure of WHO.All the respondents signed the informed consent forms.All statistical analysis were carried out using SAS 9.2 and SPSS standard version 13.0.Chi-square test was used for statistical analysis.P value ＜0.05 was regarded as statistically significant.Results The investigation in these two counties covered 7 126 residents,including 1 734 symptomatic OA patients,with a prevalence rate of 24.3％,where knee OA had the highest prevalence rate [13.8％(983/7 126)],other figures were as follows:lumbar vertebra,neck,hand,shoulder,elbow,ankle,hip,wrist,thoracic vertebra and foot.There were statistical differences in the prevalence of knee,ankle,neck,shoulder and hand between the two genders (P＜0.05).Conclusion The prevalence of symptomatic OA in rural areas of Shanxi,China is relatively high,but the risk factors still need to be further studied and proved.

Objective To observe the effects of aging on liver and heat shock protein (HSP)70 expression in rats,and explore the role of HSP 70 in the changes of aging liver. Methods 24 healthy Sprague Dawley rats were divided into 4 groups according to age:21-day-old group,3-monthold group,12-month-old group and 18-month-old group (n=6 per group).Routine blood tests and biochemical tests were tested. Liver tissues were observed under light microscopy. The mRNA expression of HSP70 was detected by real-time PCR. Results The ratios of liver weight to body weight were decreased gradually with aging in 4 groups (0.073,0.050,0.025,0.019,respectively,t=78.016,P =0.000).Compared with those of young rats (21-day-old and 3-month-old),serum albumin levels of aged rats (12-months and 18-months) were declined [(35.0±2.7) g/L and (39.8±3.5) g/L vs.(27.3±9.3) g/L and (20.6± 1.7) g/L,t=12.233,P=0.000].Nevertheless serum alkaline phosphatase (ALP) levels were increased with aging [(68.8± 23.3) U/L,(71.6 ± 19.2)U/L,( 185.9 ± 41.5) U/L,(418.6 ± 140.6) U/L,respectively,t =35.454,P=0.000].The differences in other routine biochemical indexes were not found among the age groups (P＞0.05).Liver histological changes including hepatocytes disordered and vacuolization or fatty changes were detected with aging,especially in 18 month-old rats. Real-time PCR results indicated that the expression level of HSP70 mRNA was much lower in 18-month-old rats than in 12-month-old and 3-month-old rats (0.218 vs.0.220 and 0.230,P=0.000). Conclusions HSP70,as a stress protein,may play an important role in the procedure of injury and senescence of liver cell,and then can serve liver aging as one of the influential markers.