The (GCT)o polymorphism of the MICA gene was investigated in 100 patients with latent autoimmune diabetes in adult (LADA) and 145 healthy controls by PCR and denaturing polyacrylamide gel electrophoresis.The A5.1 allele was present at a significantly higher frequency in LADA group (0.340) than that in control group (0.183) (P

To investigate the regulation of osteoclast inhibitory lectin (OCIL) mRNA expression by prostaglandin E2 ( PGE2 ) in rat osteoblastic cells and the involved signaling pathways. Rat primary osteoblasts and UMR106 osteoblast-like cells were cultured and treated with various doses of PGE2 or regulators of different signaling pathways for different periods of time, the cells were then harvested at indicated dates. Total RNA were isolated and OCIL mRNA expression were studied by real-time PCR. PGE2, Forskolin, db-cAMP, and A23187 increased OCIL mRNA by 2. 38 fold,4. 2 fold,4. 5 fold, and 5. 1 fold ( all P＜0. 01 ) respectively, while PMA downregulated OCIL mRNA expression by 50% ( P＜0. 01 ). KT-5720, verapamil, W7, and PD98059 downregulated PGE2 induced OCIL mRNA expression by 56%, 40%, 65%, and 60%, respectively( all P＜0. 0l ). While chelerythrine enhanced PGE2 induced OCIL mRNA expression by 30% ( P＜0. 05 ). PGE2 up-regulated the expression of OCIL in rat osteoblastic cells via PKA, MAPK, and Ca2+/Calmodulin signaling pathways.

Adenocarcinoma ; metabolism ; pathology ; surgery ; Aged ; Cholecystectomy ; Chondrosarcoma ; metabolism ; pathology ; surgery ; Female ; Gallbladder ; chemistry ; pathology ; surgery ; Gallbladder Neoplasms ; metabolism ; pathology ; surgery ; Humans ; Immunohistochemistry ; Keratin-3 ; metabolism ; S100 Proteins ; metabolism

Objective To investigate the effect of sodium arsenite by Wnt signaling pathway on proliferation and apoptosis of oral squamous cell carcinoma.Methods Cell proliferation was detected after 1.25,2.5,5,10,20μmol/L sodium arsenite treatment human oral squamous cell carcinoma cell line Tca8113 for 24,48,72 hours by CCK8 experiment.0 and 14μmol/L sodium arsenite was used to treatment Tca8113 cells with 48h,cell apoptosis were detected by flow cytometry,Cleaved Caspase3,β-catenin,Cyclin D1 protein expression were detected by Western blot.Tca8113 cells were divided into control group,sodium arsenite group,activating agent+sodium arsenite group,all treated for 48hour,cell proliferation,apoptosis and Cleaved Caspase3,β-catenin,Cyclin D1 protein expression were detected by CCK8 assay,flow cytometry and Western blot.Results Tca8113 cell proliferation was inhibited significantly with the increase of treatment time and sodium arsenite concentration,and has a time and concentration dependent manner(P<0.05 or P<0.01).10μmol/L sodium arsenite as a follow-up study according to the IC50.Cell inhibition rate,apoptosis rate and Cleaved Caspase3 protein expression in 10μmol/L group were significantly higher than that of 0 mol/L group,the expression of β-catenin,Cyclin D1 protein was significantly lower than that of 0 mol/L group(P<0.01).Apoptosis rate,cell inhibition rate and Cleaved Caspase 3 protein expression in sodium arsenite group and activating agent+sodium arsenite group were significantly higher than control group,the expression of β-catenin and Cyclin D1 protein were significantly lower than control group(P<0.01).Apoptosis rate,cell inhibition rate and Cleaved Caspase 3 protein expression in activating agent + sodium arsenite group were significantly lower than that of sodium arsenite group,the expression of β-catenin and Cyclin D1 protein were significantly higher than that of sodium arsenite group(P<0.01).Conclusion Sodium arsenite can inhibit the proliferation of oral squamous cell carcinoma and promote apoptosis,and the mechanism was related to regulation of Wnt signaling pathway.

Phage display technology refers to a high-throughput in vitro screening technology for extracting required peptides/ proteins from colonies with mass mutants. Due to its high efficiency, practicability and convenience, it has been widely applied in pharmaceutical research and development, as well as target protein screening for active ingredients of traditional Chinese medicines. Target protein is the binding site of drug molecules in vivo, and good targets are the basis of excellent pharmaceuticals. This article summarizes the advance in studies on the phage display technology and its application in targeted protein screening for active ingredients of Chinese materia medica.
Binding Sites ; Cell Surface Display Techniques ; methods ; Drugs, Chinese Herbal ; chemistry ; Mass Screening ; methods ; Plant Extracts ; chemistry ; Proteins ; chemistry

Objective To evaluate the safety and feasibility of the modified apnea test (MAT) for brain death evaluation. Method A prospective, controlled clinical study was carried out. Forty-three patients with suspected brain death underwent a total of 85 MATs. The patient's spontaneous breathing, hemodynamics and oxy genarion were monitored during MAT; arterial blood pH, PaCO2, PaO2 were measured before and after the MAT. Paired t test was used for statistical analysis to determine significant differences in measurements before and after MAT on the same patient. The Wilcoxon Signed-Rank Test was used to determine statistical significance for skew distribution of PaO2 before and after apnea testing. Informed consent was obtained from the kinfolk of all participants and all of the procedures were done in accordance with national and international laws and policies. Results Hemodynamics and oxygenarion were stable in all patients during MAT, and none regained spontaneous respiration. About 89.4% of tests were completed within 4 minutes, and 10.6% within 8 minutes. The mean value of Pa CO2 rise was (23.1 ±4.8), and the average rate of PaCO2 increase was 5.3 mmHg per minute. Conclusions Modified apnea test can be done safely for brain death evaluation and is a useful supplement to the common apnea test.

Objective To investigate the correlation between the expression of STAT3 and MMP-2 in human pancreatic cancer,and to probe the mechanism by which STAT3 signal pathway regulates the expression of MMP-2 in pancreatic cancer cells.Methods Immunohistochemistry was used to detect the expression of STAT3,phosphorylated STAT3(p-STAT3)and MMP-2 in pancreatic cancer tissues of 34 cases and normal pancreatic tissues of 10 cases.Correlation between the expression of STAT3、p-STAT3 and MMP- 2 were statistically analyzed.Human pancreatic cancer cell lines SW1990 was cultured.AG490,an inhibitor of the upstream Janus kinase(JAK)of STAT3 was added into the culture medium.Electrophoretic mobility shift assay(EMSA)was used to detect STAT3 DNA-binding activity in SW1990 cells.Western blot was used to detect the expression of STAT3,p-STAT3 in SW1990 cells.In addition,the protein and mRNA expression of MMP-2 in SW1990 cells were determined by Western blot and RT-PCR,respectively. Results Immunohistochemistry revealed that the expression rate of STAT3,p-STAT3 were both higher in pancreatic cancer tissues than in normal pancreas tissues(P

A variety of ovarian and adrenal diseases can cause elevated levels of androgens in women. This article retrospectively analyzed clinical data of three female patients diagnosed as hyperandrogenism in Tianjin Medical University General Hospital from July 2016 to January 2017 and explored the causes of female hyperandrogenism from different angles.

Objective To evaluate the short-term efficacy and safety of sevelamer hydrochloride in treating maintenance hemodialysis (MHD) patients with hyperphosphemia.Methods A multicenter,open-labeled,self-control study was performed.Phosphate binders were discontinued during a two-week washout period.Patients with more than 1.78 mmol/L serum phosphorus after two-week washout period were eligible for the trial.The dose was adjusted every two weeks as necessary to achieve serum phosphorus control. Sevelamer hydrochloride was administered to 138 MHD patients for 10 weeks and a second two-week washout period followed.Results A total of 111 from 138 patients fulfilled the whole 14-week study. Mean serum phosphorus and calcium-phosphate products starte to decline after two-week sevelamer hydrochloride treatment. By the end of 10-week sevelamer hydrochloride treatment, mean serum level of phosphorus [(1.85±0.50) vs (2.57±0.54) mmol/L,P＜0.01],calcium-phosphate product [(4.16± 1.72) vs (5.79 ± 1.50) mmol2/L2,P＜0.01 ] and low density lipoprotein [(1.64±0.76) vs (2.31 ±0.87) mmol/L,P＜0.01] were significantly decreased,while the adjusted serum level of calcium and serum intact parathyroid hormone kept steady.Both serum phosphorus and calcium-phosphrus product increased after the second washout period, but the levels were still lower as compared to pre-treatment [(2.26±0.71) vs (2.57±0.54) mmol/L; (5.12±1.63) vs (5.79±1.50) mmol2/L2,P＜0.01].Of the 138 patients involved,214 episodes in 106 patients and 121 episodes in 89 patients were reported as adverse events and adverse drug reaction respectively. Gastrointestinal symptoms,of which most were mild or moderate,happened to 68.1％ (94/138) patients. Conclusions Sevelamer hydrochloride can control serum phosphorus and reduce the levels of calcium-phosphorus product and cholesterol.Slight gastrointestinal symptoms like constipation are common during the treatment.