60 g in 15 cases).The operation time ranged from 35 to 85 minutes(mean,45),and the blood loss was 50-100 ml(mean,60 ml).No case needed blood transfusion.No rupture of the prostatic capsule,venous sinuses,or perforation of the bladder-prostate junction occurred in this series.The patients were followed up for 4 to 6 months,during which the Qmax increased to 16.4-23.2 ml/s(mean,19.8 ml/s),RU decreased to 0-15 ml(mean,5 ml),and IPSS score improved to 0-6.8(mean,4.2).No patient developed urinary incontinence.Conclusions Transurethral retrograde dissection of the prostate is effective for the treatment of BPH with a low morbidity rate of urinary incontinence.The procedure is simple and results in low blood loss.

Objective To explore the fixation method of tibial helical plate for treatment of proximal and middle one-third of humeral fractures and evaluate the clinical outcome. Methods A review was performed on 15 patients with proximal and middle one-third of humeral fractures treated by tibial helical plate from May 2004 to February 2009. There were 10 males and five females, at age range of 19-65 years ( average 38.0 years). The surgical method was summarized and the shoulder function evaluated.Results The follow-up lasted for 7-24 months (mean 13 months) , which showed bony union in all patients, with mean union time of 4.7 months. There was no implant loosening or failure. According to Neer 's criteria, the result was excellent in seven patients and good in six, with excellence rate of 86.7%.Conclusions Open reduction and internal fixation using tibial helical plate is simple and effective for treatment of proximal and middle one-third of humeral fractures.

Objective: To establish a sensitive and effective method for bioassay of stem cell factor (SCF) in vitro used for evaluation of biological potency of this products. Methods: Leukemia cell line UT-7 was used in the bioassay of rhSCF. The optimal test condition was determined, by comparing different results of MTT staining from different cell concentration and cell culture time. The potency of SCF was calibrated by the National Reference. Results: According to dose-response curve of SCF on UT-7 cell proliferation, the optimal reaction time and dose range were determined. Conclusion: The established method of using UT-7 dependent cell line to test the SCF bioactivity can be used in routine quality control of the biological potency of recombinant SCF.

Objective Our previous research demonstrated that trkA and p75 receptors of nerve growth factor(β-NGF) are expressed in human pterygium fibroblasts(HPF), and trkA is expressed only in conjunctiva. The purpose of present study was to investigate the effects of β-NGF on proliferation of HPF and analyse the pathogenesis mechanism of pterygium. Methods The HPF specimen was obtained from Union Hospital of Tongji Medical College, Huazhong University of Science and Technology during the surgery. Explant culture technique was used for the primary culture of HPF tissue. The cells of confluenting 80% were collected and digested using 0. 25% tripsin + 0. 02% EDTA (1:1) and the third to fifth generation of cells were utilized in the experiment. Different concentrations of β-NGF was added in medium. Cultured cells were identified using vimentin, keratin and α-SMA. MTT was used to determine the proliferation of HPF after addition of β-NGF. The expression of trkA and p75 in HPF was detected by immumofluorescence method. Cell proliferation also was semi-quantitatively analyzed by detect of expressions of PCNA protein and mRNA in HPF using Western blot and RT-PCR. Results Cultured HPF cells showed the positive responses for vimentin, α-SMA, trkA and p75 but absent reaction for keratin. MTT revealed that the OD value of HPF cells was gradually enhanced with the increase of β-NGF concentration in 12, 24, 48, 72 and 96 hours after β-NGF action with the maximum stimulation at 48 hours. The expression of PCNA protein and mRNA in HPF was significantly different among various concentrations of β-NGF groups(F_(protein) = 24. 980, P = 0. 000; F_(mRNA) = 64. 490, P = 0. 000) and increased from 5 ng/mL β-NGF group through 50 ng/mL β-NGF group in comparison with 0 and 1 ng/mL β-NGF group (P ＜ 0. 05) . Conclusion The findings demonstrate the potential proliferative effect of β-NGF binding to trkA and p75 on HPF.

AIM:TostudythefunctionofmicroRNA(miR)-19aandmiR-92abyseed-targetinginhibitionin multiple myeloma cells and their signal pathways .METHODS:The experiments were divided into t-antimiR-19a group, t-antimiR-92a group, scramble control group and blank control group .The growth-inhibitory potencies were measured by MTT assay.The ability of cell colony formation was measured by cell colony formation assay .The ability of cell invasion was measured by Transwell experiment .The miR-19a and miR-92a target gene signal pathways were integrated by miRFo-cus software.RESULTS:MTT assay showed that t-antimiR-19a and t-antimiR-92a significantly inhibited the viability of multiple myeloma cells , and the best concentration and time were 0.5μmol/L and 48 h, respectively .The colony number in t-antimiR-19a/92a group was less than that in scramble control group .The transfection with t-antimiR-19a or t-antimiR-92a effectively decreased the cell invasion , as the relative invasion cell number was significantly decreased compared with scramble control group.miR-19a and miR-92a were involved in mTOR signaling, cell cycle and other cancer pathways . CONCLUSION:miR-19a and miR-92a cluster might be a potential target for therapeutic intervention in multiple myelo-ma.

Objective To evaluate the clinical efficacy of transcatheter super-selective hepatic artery embolization (TAE) in treating symptomatic polycystic liver disease (PLD). Methods A total of 8 patients with PLD, who were admitted to authors’ hospital during the period from 2009 to 2013 to receive TAE, were enrolled in this study. The patients included 6 females and 2 males with a mean age of 59.5 years (54-65 years). The used embolic agents were polyvinyl alcohol (PVA) microspheres and micro spring coils. Both plain and contrast-enhanced CT scans of the upper abdomen were performed before TAE as well as at 12 months after TAE; the total volume of the hepatic cysts was measured and the changes of the cystic volume were determined. Statistical analysis was conducted using paired t test. Results The technical success rate was 100%. After TAE, the patients developed fever and different degrees of discomfort at liver area, which were disappeared after active symptomatic medication, and no serious complications occurred. The patients were followed up for 12 months , the mean total volume of the intrahepatic cysts decreased from preoperative (5 794±2 066) cm3 (range 3 120-8 935 cm3) to postoperative (3 832±1 525) cm3 (range 2 019-5 925 cm3), the difference was statistically significant (t=6.971, P<0.001). The reduction ratio of total volume of intrahepatic cysts was 34.6%±11.3%(24.3%-60.4%). Conclusion For symptomatic polycystic liver disease, transcatheter super-selective hepatic arterial embolization is a newly-developed treatment. This technique is safe and effective with reliable response and fewer complications. Therefore, it should be recommended in clinical practice.

Objective To investigate the association between polymorphisms of thyroid-stimulating hormone receptor(TSHR)gene intron 1(rs179247, rs12101261)and Graves′ disease(GD)in the China Han population from Xuzhou city, Jiangsu Province. Methods Total 1 066 GD patients and 1 107 control subjects were recruited for genotyping by Taqman probe technique on Fluidigm EP1 platform. Meanwhile, serum concentrations of thyroid hormone and TSH receptor antibodies(TRAb)were determined. Results The rs179247_A, rs12101261_T were significantly associated with GD risk(OR=1.35, 95%CI 1.19-1.54, P=5.92×10-6; OR=1.32, 95%CI 1.16-1.50, P=2.22×10-5). Logistic regression identified that rs179247 was an independent susceptibility locus of GD. Serum TRAb concentration showed a significant difference(P=0.015)among rs179247_AA, AG, and GG genotypes. Conclusion rs179247 and rs12101261 in TSHR intron 1 are both associated with GD, and rs179247 may contribute risk to GD independently. The polymorphism is associated with TRAb, but not with serum concentration of thyroid hormones, age of onset, diffused thyroid goiter, ophthalmic signs, and relapse.

Objective To evaluate the application of plasma drug monitoring in pediatric HIV/AIDS patient antiretroviral therapy adherence monitoring.Methods Totally 261 plasma samples and related information were collected from three consecutive follow-up visits of 87 HIV-infected children treated in Shangcai county CDC of Henan province from March to October 2009.The plasma concentrations of antiretroviral drugs were measured by a developed high performance liquid chromatography-mass spectrometry method.Potential adherence influencing factors, such as regimen, age, gender, parent conditions, previous ART exposure and therapy duration, were analyzed by univariate logistic regression.Results Plasma concentration of antiretroviral drugs lower than LLTR (1 000 ng/ml) was the criteria to identify missed dose.The concentrations of 28 plasma samples were lower than LLTR, which meant missing dose.There were 17 patients (19.5%) with their concentrations lower than LLTR at least once in three follow-up visits.Logistic regression analysis of adherence related factors showed that compared with the children whose parents were both alive, the children whose mother and (or) father died were more likely to miss dose.The odds ratio was 4.13(95% credibility interval:1.37-12.46, P values was 0.012).Conclusions HIV-infected children have adherence problems when receiving antiretroviral therapy.Plasma therapeutic drug monitoring can be one of the effective methods to monitor the adherence.

Sulfur compounds in the diesel were selectively derived into methylsulfonium salts by reacting with iodomethane in the presence of silver tetrafluoroborate, and characterized by positive-ion electrospray ionization (ESI) fourier transform ion cyclotron resonance (FT-ICR MS). The conversion ratios and react selectivities of the methylation for various sulfur compounds were investigated by gas chromatograph coupled with pulse flame photometric detector (GC-PFPD). Result shows that the sulfur compounds in the diesel can react with iodomethane easily at room temperature, the most of sulfur compound derived into methylsulfonium salts;the homologue of benzothiophene get the higher conversion ratio and react selectivity than the homologue of dibenzothiophene (DBT). It is found that primarily sterically hindered alkylated DBT, for example, 4- or 4-, 6- DBT, is recalcitrant to be methylated. Other than benzothiophenes and dibenzothiophenes, one- and two-ring sulfides, as well as other sulfur compounds with a double bond equivalent (DBE) value ranged from 1 to 12 are identified in the diesel.

AIM: To investigate the expression of calcium sensing receptor(CaSR) during myocardial injury induced by ischemia/reperfusion and disclose the relationship between CaSR and myocardial ischemia/reperfusion. METHODS: The experimental model was established by the 30 min ligating and 1 h, 2 h, 4 h, 6 h reperfusing the left descending coronary artery (LAD) in rats. Wistar rats were randomly divided into 5 groups: sham group, ischemia/reperfusion 1 h, 2 h, 4 h, 6 h groups (I/R 1 h, 2 h, 4 h, 6 h group). CaSR mRNA expression was detected by RT-PCR. Left ventricular function was recorded. The levels of plasma lactate dehydrogenase (LDH), alondialdehyde (MDA) and superoxide dismutase (SOD) were measured. The change of ultrastructure in the ischemia/reperfusion myocardium of rats was observed by electron microscopy. RESULTS: LVSP,?dp/dtmax and SOD activity decreased gradually with the reperfusion time prolonged. LDH and MDA peaked at 2 h. The ultramicro-structural injury at the 1 h and 2 h was more serious than that at 4 h and 6 h. The expression of CaSR increased significantly after reperfusion of 1 h and 2 h, and decreased after 4 h and 6 h. CONCLUSION: The increased expression of CaSR mRNA and serious injure of myocardium were observed. CaSR may be associated with the myocardial ischemia/reperfusion injury.