Objective To investigate the impact of methylene tetrahydrofolate reductase (MTHFR) gene polymorphism on folicacid for lowering plasma level of homocysteine in elderly patients with coronary heart disease (CHD). Methods In the first affiliated hospital of Zhengzhou university,a total of 180 elderly patients with CHD were randomized to two groups. The study group (91 ptients) received folicacid 5mg once daily and the control group (89 patients) received no folic acid. 8 weeks after treatment, the changes in plasma Hcy were observed and analyzed by MTHFR genotypes (TT vs. CC vs. CT). Results Plasma Hcy of the three genotypes had a statistical significance at the baseline (P<0.001), among which plasma Hcy level was the hightest in patients with genotype TT, while it had on difference in genotypes CC and CT (P = 0.057). 8 weeks after treatment, plasma Hcy level declined up to 24%in the patients with genotype TT in the study group, while it decreased about 6%and 15%in patients with genotype CC or CT, separately. Hcy level was slightly decreased in the patients with genotype CC, CT, or TT in the control group. Conclusions Plasma Hcy level differs statistically in three genotypes, and it is the highest in genotyp TT. Folicacid can effectively lower the level of plasma Hcy in elderly patients with CHD, especially those with genotype TT.

BACKGROUND:The rise of tissue engineering has opened up new ways for tissue repair and reconstruction of the urinary tract, and the bladder acellular matrix is a better alternative material for urinary tissue engineering.
OBJECTIVE:To construct the compound of hair fol icle stem cells with heterologous bladder acellular scaffold, and to observe the growth of hair fol icle stem cells on the scaffold.
METHODS:Bladder acellular matrix from New Zealand rabbits were prepared and detected using scanning electron microscopy and Masson staining. Passage 3 hair fol icle stem cells were statical y inoculated into the surface of bladder acellular matrix using secondary sedimentation method. Under inverted microscope, cellgrowth was observed, and cellgrowth curves were drawn. cellgrowth on the scaffold surface was observed through histological detection and scanning electron microscope observation.
RESULTS AND CONCLUSION:Prepared bladder acellular matrix was a white translucent film with fiber mesh structure, and no residual cells were seen. Masson staining results indicated that the bladder acellular matrix had col agen structure, and no obvious residual cells. After culture for 48 hours, hair fol icle stem cells grew wel around the bladder acellular matrix under inverted microscope;1 week later, hair fol icle stem cells extended and adhered to the scaffold surface. These findings indicate that hair fol icle stem cells have a good biocompatibility with the bladder acellular matrix through in vitro culture.

The serum specimens were collected from ovarian cancer (n =100),benign ovarian disease (n =69) and healthy women (n =95).The serum levels of HE4 and CA125 were detected.Risk of ovarian maliqnancy algorithm (ROMA) was calculated.Accuracy of prediction was evaluated by the area under receiver operating characteristic curve (ROC-AUC).And validity of prediction was evaluated by sensitivity and specificity.The results showed that the median level of ROMA algorithm was 83.0％,8.9％ and 8.7％ in ovarian cancer,benign ovarian disease and healthy women groups respectively.The difference were statistically significant (all P ＜ 0.01).Compared with benign ovarian disease group,the ROC-AUC of ROMA algorithm was 0.900 in ovarian cancer group.The sensitivity and specificity were 81.0％ and 92.8％ in ovarian cancer group respectively.Thus ROMA algorithm is a useful parameter in risk stratification for ovarian cancer.The diagnostic accuracy of ROMA algorithm is better than that of HE4 and CA125 in ovarian cancer.

Objective To study the relationship between smoking and the incidence of pulmonary tuberculosis(TB) in Chinese people.Methods The Pubmed database and three Chinese databases such as Wanfang Data,Veipu data(VIP) and China national knowledge infrastructure database (CNKI) were retrieved.The literatures on the relationship between smoking and pulmonary TB incidence in Chinese people published before April 2016 were analyzed.Results Fifteen studies were included,after excluding 1 low quality study,the rest had no statistical heterogeneity.The merged odd ratio (OR) was 1.71,95 ％ confidence interval (CI) 1.51-1.90.Two studies observed the relationship between the amount of cigarettes and TB pathogenesis,but there was heterogeneity and could not be further merged the OR value for conducting analysis.No subgroup analysis of gender was performed in all studies.Conclusion The risk suffering from pulmonary TB in Chinese smokers is 1.71 fold of non-smokers,and smoking increases the risk of pulmonary TB onset.

Traditional drug development and pre-clinical tests are based on animals and involve large numbers of animals,costs and long periods. Meanwhile,inter-species differences are difficult to overcome. Human embryonic stem cells (hESCs),which can self-renew and directly differentiate to types of cells,have become a new tool for toxicity alternative testing. hESC-Based alternative testing models,such as the reproductive toxicity test system,neuro development toxicity test system and metabolic model,can be used to predict target organ toxicity and toxic mechanisms of chemicals, analyze metabolic pathways and to search for potential toxicity biomarkers, when combined with omics such techiniques as metabonomics , proteomics and genomics. Therefore, hESC-based alternative testing models have extensive application to toxicology.

Objective To establish the normal reference ranges of clinical pathology for Beagle dogs in the Good Laboratory Practice ( GLP ) system.Method Sixteen biochemical indexes , seventeen hematological indexs and three coagulation function indexes of 117 Beagle dogs were detected , and the mean value of each index and the normal reference ranges were calculated and compared .Results Only alkaline phosphatase ( ALP ) from the biochemical items was significantly different between males and females (P<0.01),which was higher among males than among females .Three in-dexes of hematology were significantly different between males and females (P<0.01),with red blood cell(RBC), hemo-globin(HGB)and hematocrit(HCT)lower among males than among females.The coagulation function items were not signif-icantly different between the two sexes .Conclusion Some indexes of clinical pathology were significantly different between males and females , which should be considered during statistic analysis on toxicity .Our study has established the normal reference range of clinical pathology for Beagle dogs in the GLP system , which provides reference for toxicity tests .

OBJECTIVE:To observe the clinical efficacy and safety of Vitamin C tablets after grinding for local use in the treatment of oral ulcer.METHODS:Two hundved and eighty-six cases of oral ulcer in our hospital during Feb.2014-Fed.2016 were selected and divided into treatment group and control group according to random number tabel,with 143 cases in each group.Control group was given Guilin watermellon frost,2-3 times a day;treatment group was given Vitamin C tablets powder for local use,2-3 times a day.Clinical efficacy,the time of ulcer disappearance,the incidence of ADR,recurrence rate of ulcer,treatment satisfactory degree were observed in 2 groups.RESULTS:Total response rate of treatment group was 96.5 ％,which was significantly higher than 80.4％ of control group,with statistical significance (P＜0.05).The time of ulcer disappearance was (2.37 ± 0.89) d in treatment group,which was significantly shorter than (4.12 ± 1.33) d of control group;recurrence rate of ulcer was 3.5％,which was significantly lower than 8.4％ of control group;treatment satisfactory degree was 90.9％,which was significantly higher than 79.7％ of control group,with statistical significance (P＜0.05).There was no statistical significance in the incidence of ADR between 2 groups (P＞0.05).CONCLUSIONS:Vitamin C tablets after grinding for local use has obvious effect on oral ulcer,significantly shortens the time of ulcer disappearance,reduces recurrence rate,and improves treatment satisfactory degree with good safety.

Objective To study the compatibility and feasibility of construct tissue engineer bladder through biocompatibility of hair follicle stem cells (HFSCs) and heterogeneous bladder acellular matrix (BAM) in vitro and vivo.Methods The third-generation of rat HFSCs were cultured with the two-step enzymatic and different adhesion time method.The cells were identified by flow cytometry through detection expression of β1 integrin FITC-Conjugated.The New Zealand rabbit BAM were decellularized by the method of microdissection and chemical washing,and then examined by Masson staing and electron microscope to confirm no cell elements remained.The HFSCs of the rats were implanted in BAM and cultured for about 24 hours.Then the cells growth conditions on the material surface were examined by histology and scanning electron microscopy.The cells-scaffold composites were implanted in rats subcutaneously,samples and histological examination were harvested at 1,2 and 4 weeks after implantation.Results The BAM was white and translucent membranous.There were fiber network structures without cell elements remained under the examination of electron microscope.And the BAM prompted for collagen tissue composition under Masson staining,without significant residual cells.The growth condition of HFSCs beside the BAM was well that observed by inverted microscope at 48 h of co-culture.After 1 week the HFSCs extended and adhered to the matrix surface observed under the scanning electron microscope.No significant inflammatory response in rat subcutaneous implantation experiments,the single-layer cell structure in histological examination could be seen after 1 week,and multi-layer cell structure in histological examination could be seen after 4 weeks of implantation.Conclusion The biocompatibility of HFSCs and heterogeneous BAM is good,which provides a good experiment support for HFSCs to repair the bladder defects disease.

Objective To determine the value of complexed prostate-specific antigen (cPSA) in predicting metastasis in patients with prostate cancer.Methods From January 2012 to April 2014,the clinical data of 74 patients with newly diagnosed prostate cancer in our hospital was retrospective reviewed.The prostate cancer was diagnosed by transrectal ultrasound guided biopsy and postoperative pathologic diagnosis.The patients were divided to 2 groups according to metastases status.There were 38 patients in the group of metastasis and 36 patients in the group of without metastasis.In metastasis group,the bone metastasis was found in 36 cases.There is only one case with lung metastasis and one case with lymph node metastasis.In the group without metastasis,the T stages classification were T1-T2 in 17 cases and T3-T4 in 19 cases.While,10 cases with T1-T2 stage and 28 cases with T3-T4 stage were confirmed in the group with metastasis.There was no statistical significance of T stages and mean age in two groups (P＞0.05).The level of cPSA in the serum was detected by chemiluminescent immunoassay,the level of tPSA,fPSA were detected by electro-chemiluminescent immunoassay,fPSA/tPSA,cPSA/tPSA were evaluated and the corresponding specificity were calculated.The correlation of age with tPSA,cPSA were analysed.The differences in PSA,fPSA/tPSA,cPSA/tPSA were compared between metastasis and non-metastasis group.ROC curve analysis was used to determine the diagnostic value of cPSA and tPSA,In the meantime,area of ROC curves were compared by Z test.Results The age was not related to the value of tPSA (r=-0.09,P=0.12) and cPSA(r=-0.38,P=0.14).The median levels of tPSA,fPSA,and cPSA are 29.88μg/L,2.18 μg/L and 18.86 μg/L in the group without metastasis,respectively.The median levels of tPSA,fPSA,and cPSA were 410.05 μg/L,51.50 μ.g/L and 290.40 μg/L in the group with metastasis,respectively.Significant differences of those results could be found in two groups (P＜0.05).fPSA/tPSA was 0.07 and cPSA/tPSA was 0.79 in the group without metastasis.fPSA/tPSA was 0.08 and cPSA/tPSA was 0.80 in the group of metastasis.fPSA/tPSA (P=0.77),cPSA/tPSA (P=0.64) in patients with metastasis were not greater than in those without metastasis (P＞0.05).The area under the curve of tPSA and cPSA were 0.83 (95％ CI 0.73-0.93) and 0.82 (95％CI 0.73-0.92) respectively.Analysis of ROC curves showed that the AUC for cPSA is not significant different from tPSA (Z=1.64,P=0.10).The specificity of cPSA was 22.2％ which is higher than that of tPSA (19.4％) at a sensitivity of 92.1％ in predicting metastasis comparing with the patients without metastasis.The sensitivity could reach to 90.0％ when the cut off value of tPSA was 9μg/L or the cut off value of cPSA was 7 μg/L.Conclusions In our study,a preliminary validation that cPSA is useful for predicting the metastasis in patients with prostate cancer was made.