Objective To investigate the therapeutic effects of citalopram on alleviating painful symptoms in type 2 diabetes mellitus(DM) patients with complication of painful peripheral neuropathy.Methods Thirty-eight type 2 DM patients with painful peripheral neuropathy were randomly divided into control group(eighteen patients) and treatment group(twenty patients).The diabetes control(including fasting blood glucose) and general health state(including body mass index,liver function,renal function) of patients were recorded.Patients in control group were given conventional drugs(including hypoglycemic drugs,anodyne,neurotrophy drugs,antiplatelet drugs),and those in treatment group received conventional drugs plus antidepressant drugs(citalopram,20mg,q.i.d.for 14 days).Hamilton Depression Rating Scale for Depression(HAMD-17) was used to assess the depressive symptoms,and numeric pain intensity scale(NPIS) was used to assess the pain intensity on baseline and the 1st,7th and 14th day.At the same time,the levels of analgesic agents were recorded.Results On the 7th and 14th day,the HAMD-17 scores in treatment group(22.14?8.92,18.69?9.4) were significantly lowered compared with that in control group(26.81?9.79,25.71?9.92),P

Objective To detect the apoptosis of femoral head cartilage cells and to observe the expression of apoptosis-related proteins in the tissues of the femoral head,as well as to explore the main pathway for regulating the apoptosis in steroid induced by juvenile rabbit models with avascular necrosis of femoral head.Methods The models with avascular necrosis of the femoral head and the control group model were made in New Zealand infancy albino rabbits induced by glucocorticoid(GC).The immunohistochemical method was used to detect the expressions of Caspase3,Caspase-8,apoptosis protease activating factor-1 (apaf-1),calpain-1 in the femoral heads.Results 1.The integrated optical density(IOD) values of Caspase-3 in GC-induced subgroup,the subgroup that was not induced by GC and control group were 25 142.72 ± 21 528.48,2 069.63 ± 1 096.96 and 301.80 ± 99.66,respectively.The IOD values of Caspase-8 in GC-induced subgroup,the subgroup respectively and the control group were 24 942.63 ± 18 942.99,2 016.31 ± 1 518.70,236.85 ±97.94,respectively.The IOD values of apaf-1 in GC-induced subgroup,the subgroup that was not induced by GC and the control group were 8 5 14.23 ± 6 384.20,1 118.49 ± 1 360.59,95.13 ± 38.05,respectively.The IOD values of calpain-1 in GC-induccd subgroup,the subgroup that was not induced by GC and control group were 9 636.71 ± 9 123.81,1 881.10 ± 3 277.86,126.71 ± 47.35,respectively.The IOD value differences of the Caspase-3 between GC-induced subgroup and the subgroup that was not induced by GC,the control group were extremely significant (H =l 1.470,23.996,P ＜ 0.01).The IOD value differences of the Caspase-8,apaf-1,calpain-1 between GC-induced subgroup and the control group were extremely significant (H =22.178,22.808,13.553,P ＜ 0.01).2.The linear regression analysis results showed that under the joint action of Caspase-8,apaf-1,calpain-1,only the Caspase-8 could significantly predict Caspase-3,and its regression equation regression got significant effect and could explain 40.3％ of the variance;while the regression effects of the apaf-1 and calpain-1 to Caspase-3 were not significant.Conclusion Death receptor pathway might play a major regulation role in the apoptotic process of avascular necrosis.

Prediction of RNA secondary structures including pseudoknots is a difficult topic in RNA field. Current predicting methods usually have relatively low accuracy and high complexity. Considering that the stacking of adjacent base pairs is a common feature of RNA secondary structure, here we present a method for predicting pseudoknots based on covariance with stacking and minimum free energy. A new score scheme, which combined stacked covariance with free energy, was used to assess the evaluation of base pair in our method. Based on this score scheme, we utilized an iterative procedure to compute the optimized RNA secondary structure with minimum score approximately. In each interaction, helix of high covariance and low free energy was selected until the sequences didn't form helix, so two crossing helixes which were selected from different iterations could form a pseudoknot. We test our method on data sets of ClustalW alignments and structural alignments downloaded from RNA databases. Experimental results show that our method can correctly predict the major portion of pseudoknots. Our method has both higher average sensitivity and specificity than the reference algorithms, and performs much better for structural alignments than for ClustalW alignments. Finally, we discuss the influence on the performance by the factor of covariance weight, and conclude that the best performance is achieved when lambda1 : lambda2 = 5 : 1.
Algorithms ; Base Pairing ; Base Sequence ; Computational Biology ; methods ; Molecular Sequence Data ; Nucleic Acid Conformation ; RNA ; chemistry ; genetics ; Sequence Analysis, RNA

Objective To identify the influencing factors for rural doctors′ training effect,and suggest on the improvement of such training.Methods On the basis of rural doctors′ survey,the theory of pre-intervention was used to probe into the influencing factors for such training in five dimensions of attention notice,mega-cognitive strategies,advance organizer,goal orientation,and preparatory information.Results 73.2% of the groups were found with satisfying effect.In the single factor analysis,comparison of training effect involving such factors as age,gender,length of work life and pre-intervention revealed statistical significance(P<0.05).As shown in the logistic regression analysis,High motivation in meta-cognitive strategies,Clear goals in goal orientation,Tiered and categorized training in advance organizers,and Practical learning in preparatory information,as well as variants like age would influence rural doctors′ training effect significantly.Conclusions The key to better training effect lies in better motivation of the trainee,setting correct training goals,emphasis on the practicability of training contents and,the pertinence of the training objects.

Objective To discuss the security and reliability of preoperative thoracoscopic pericardial exploratory and to evaluate of the surgical indications.Methods Video full-assisted thoracoscopic pericardioscopy has been implemented in 41 central type lung cancer cases before radical resection.Results Video assisted pericardioscopy group underwent thoracotomy lung resection with procession of intrapericardial pulmonary artery in 8 cases (partial pericardial resection in 2 cases),with pulmonary vein in 10 cases,and out-pericardial lung resection in 9 cases.Spiral CT projections were consistent with surgery was only 65.8 ％.The average time of explorationa was (23±10) min.Conclusion Except for widely used in pulmonary wedge resection and lobectomy,video-assisted thoracoscopic pericardial exploration can improve resection rate and survival rate in central type lung cancer patients which can reduce the need for exploratory thoracotomy.

Objective:To validate five-year risk prediction models for atherosclerotic cardiovascular di-sease (ASCVD) in a contemporary rural Northern Chinese population.Methods: Totally 6 489 rural adults aged 40 to 79 years without clinical ASCVD were enrolled at baseline between June and August 2010, and followed up through January 2017.Expected prediction risk using the China-PAR (prediction for ASCVD risk in China) model was compared with the pooled cohort equations (PCE) reported in the American College of Cardiology / American Heart Association guideline.Kaplan-Meier analysis was used to obtain the observed ASCVD event (including nonfatal myocardial infarction, coronary heart disease death, nonfatal or fatal stroke) rate at 5 years, and the expected-observed ratios were calculated to eva-luate overestimation or underestimation in the cohort.The participants in the cohort were divided into 4 categories (<5.0%, 5.0%-7.4%, 7.5%-9.9%, and ≥10.0%) for comparisons based on ASCVD prediction risk.The models were assessed by discrimination C statistic, calibration χ2, and calibration charts and plots for illustration as well.Results: Over an average 5.82 years of follow-up in this validation cohort with 6 489 rural Chinese participants, 955 subjects developed a first ASCVD event.Recalibrated China-PAR model overestimated ASCVD events by 22.2% in men and 33.1% in women, while the overestimations were much higher for recalibrated PCE as 67.3% in men and 53.1% in women.Gender-specific China-PAR model had C statistics of 0.696 (95%CI, 0.669-0.723) for men and 0.709 (95%CI, 0.690-0.728) for women, which were similar to those of 0.702 (95%CI, 0.675-0.730) for men and 0.714 (95%CI, 0.695-0.733) for women in the PCE.Calibration χ2 values in China-PAR were 17.2 and 54.2 for men and women, respectively;however, the PCE showed poorer ca-libration (χ2=192.0 for men and χ2=181.2 for women).In addition, the calibration charts and plots illustrated good agreement between the observations and the predictions only in the China-PAR model, especially for men.Conclusion: In this validation cohort of rural Northern Chinese adults, the China-PAR model had better performance of five-year ASCVD risk prediction than the PCE, indicating that recalibrated China-PAR model might be an appropriate tool for risk assessment and primary prevention of ASCVD in China.

Objective To evaluate the early stage effects of partial two?stage exchange (PTE) for infection after total hip arthroplasty (THA) in order to improve surgical treatment outcomes. Methods Twelve patients (7 males and 5 females) of infect?ed THA treated by PTE between September 2000 and February 2016 were included with an average of 59 years old (range, 40-74 years old). The femoral stem prosthesis was preserved when we ensured that it was not infected and with well fixation during opera?tion. The acetabular prosthesis was totally replaced. Furthermore, the secondary surgery was performed on patients who were free from infection for at least 3 months. At the follow?up duration, the pelvic X?ray was examined to access the presence of loosening of the prosthesis. The inflammatory index was recorded. Hip function was assessed by the Harris hip score, and the visual analogue score (VAS) and patient's subjective satisfaction were recorded by the questionnaire. Results All of the 12 patients were fol?lowed up for a mean of 33.3 months (range, 24-48 months). We achieved a 92% (11/12) success rate. One patient resuffered infec?tion, which was controlled after the second debridement. The preoperative Harris score of 12 patients was 23-57, with an average of 40.83±10.62. All patients had significant improvement in hip function after PTE. The Harris score reached 59.58±4.34 at one month after surgery, and reached 64.58±9.08 after three months and 86.75±4.58 at the last follow?up. There was significantly dif?ferent when compared with the preoperative Harris score. At the last follow?up, the length difference between the lower limbs was less than 1cm in all patients. Two patients did not complain of pain, while other 10 patients got a VAS score of less than 2 points. The patient's subjective satisfaction rating was 100%. Conclusion PTE could be a valuable alternative treatment for infection af?ter THA. The infection control rate and clinical outcomes are comparable to those of two?stage exchange.

Objective: To investigate the prevalence and related risk factors of prostate diseases in traffic policemen. Methods: A total of 848 traffic policemen who took part in the physical examination among August and September in 2016 were selected as research subjects, and a questionnaire survey was conducted to collect their information including smoking, alcohol drinking, biological and physiological indicators, as well as prostate disease etc. The relationship between the prevalence of prostate diseases and related risk factors was analyzed by Non-conditional Logistic Regression. Results: The total prostate disease prevalence rate was 40.2% in the study subjects, and there is statistical significance (P<0.05) of differences between prostate disease group and non disease group in age, work age, smoking, drinking and field work. Single factor analysis showed that age, work age, smoking, and field work are independent risk factors of prostate disease (P<0.05) . Multivariate Logistic regression analysis showed that increasing age (OR 1.03) , smoking (OR 1.92) and field work time (OR 1.47) significantly increased the risk of prostate disease in male police after age, smoking, drinking, BMI, systolic blood pressure, diastolic blood pressure, fasting blood glucose, blood lipids and other indicators were adjusted. Conclusion age, smoking and field work time are risk factors of prostate diseases in the traffic police. There is great significance in publicizing the harmful effects of smoking and reducing the duration of field work.

Objective: To understand pneumonia mortality in children aged 0-14 years in China in recent 15 years, and to provide reference for child pneumonia prevention and treatment. Methods: Based on the death data from China Statistical Yearbook 2005-2019, pneumonia mortality in urban and rural children aged 0-14 was extracted and the standardized mortality was calculated, and the trend of mortality was fitted by Joinpoint regression model. Results: The crude mortality rate of child pneumonia in urban and rural areas showed an increasing trend, while the standardized mortality rate showed a fluctuating downward trend. Joinpoint regression showed that the mortality rate of pneumonia in urban and rural children showed a monotonous downward trend, and there was no turning point. The overall APC of pneumonia mortality of urban children was -3.4, that of boys and girls were both -3.5. Trend for annual changes in urban areas were found significant among total sample and boys (both P <0.05). The overall APC of pneumonia mortality in rural children was -7.8, that of boys and girls were -7.1 and -7.8, respectively. Trend for annual changes in rural areas were found significant among total sample and boys(both P <0.05). There was no significant differences in the trend of mortality between urban and rural groups. Conclusion During 2005 to 2019, child pneumonia mortality in urban and rural areas in China shows a downward trend, which is relatively balanced in urban and rural areas. Further strengthened pediatric pneumonia treatment and management are expected to reduce the pneumonia mortality.

BACKGROUND:Increasing autologous stem cellmobilization is conceived to achieve effectively repair of cardiac ischemic injury. Therefore, it is important to seek a specific and effective mobilization agent. OBJECTIVE:To observe the effects of hypoxia-inducible factor-1α(HIF-1α) on bone marrow mesenchymal stem cellmobilization in myocardial infarction. METHODS:Left anterior descending artery was ligated to establish a rat model of acute myocardial infarction in 90 outbreeding Sprague-Dawley rats, and then the models were randomly divided into three groups. In HIF-1α-antisense oligonucleotide (ASODN) group, HIF-1α-ASODN was infused into the tail vein to restrain the expression of HIF-1αin infarcted ischemic tissue. In HIF-1α-missense oligonucleotide (MSODN) group or control group, an equal volume of HIF-1α-MSODN or saline was injected. RESULTS AND CONCLUSION:After 30 hours and 7 days of modeling, the number of bone marrow mesenchymal stem cells and expression of vascular endothelial growth factor in the peripheral blood of the control group were similar to the HIF-1α-MSODN group, but significantly higher than the HIF-1α-ASODN group. After 7 days of modeling, the expressions of HIF-1αprotein, vascular endothelial growth factor protein and mRNA in the ischemic myocardial tissues of the control group were similar to the HIF-1α-MSODN group, but significantly higher than the HIF-1α-ASODN group. After 7, 14 and 28 days of modeling, the capil ary density in the ischemic myocardial tissues of the control group was similar to the HIF-1α-MSODN group, but significantly higher than the HIF-1α-ASODN group. These findings indicate that after acute myocardial infarction, high expression of HIF-1αexhibits a causal relationship with mobilization of bone marrow mesenchymal stem cells, initiating a series of self-healing process of myocardial tissues.