Objective To investigate the protective effect of aminoguanidine(AG),silymarin (Sil) and anisodamine (Ani) on retinal capillary pericytes cultured in glycosylation products. Methods MTT cololrimetric assay, thymidine incorporating and fluorescent indicator fura 2 acetoxy methyl ester (Fura 2AM) were used to study the influence of AG,Sil and Ani on the growth,DNA synthesis,and cytosolic free calcium([Ca 2+ ]i)changes of pericytes cultured in the medium contained early glycation products (EGs) or advanced glycation end products (AGEs). Results Cultured in the medium contained EGs,the A value by MTT assayed and amount of thymidine incorporating in AG group and Sil group were obviously elevated than those of control group(P

Objective To observe the change of expression of inwardly rectifying K+(Kir)2.3 mRNA and protein of Kir in the hippocampus of rats with chronic temporal lobe epilepsy(TLE)in different time points and the effect of Tenidap a Kir2.3 channel opener on its expression,investigate the relationship between Kir2.3 and the pathogenesis of TLE and to explore the potential of Kir agonists as anti-epileptic drugs.Methods The pilocarpine TLE rat model was used.Animals were randomly assigned to the control or the status epilepticus(SE)groups,which were further divided into four time point subgroups consisting of 0.6,72 hours,and 2 weeks post-SE termination.Another subgroup was given Tenidap,a Kir2.3 channel opener,and tested 2 weeks post-SE.Hippoeampi were removed and the expression of Kir2.3 mRNA and protein at different time points was measured by reverse transcription polymerase chain reaction(RT-PCR)and western blotting.Results The ratios of Kir2.3 mRNA and β-actin in normal control and 0,6,72hours and 2 weeks after SE termination were 0.080±0.030,0.103±0.045,0.164±0.026,0.132±0.024.0.011±0.008,respectively(F=23.684,P<0.01).The ratios of Kir2.3 protein and GAPDH in propotional groups were0.305±0.030,0.263±0.028,0.767±0.167,0.498±0.077,0.176±0.026(F=44.183.P<0.05).The expression of Kir2.3 channel in the epileptic rats was bimodal,increasing immediately after SE,relative to controls,and declining in the chronically epileptic period.Tenidap administration upregulated both the mRNA(0.021±0.006)and protein expression(0.636±0.140) of Kir2.3(F=25.216 and 47.355,P<0.05 and 0.01).Condusion These findings suggest that the pathogenesis of TLE is accompanied by a decrease in Kit2.3 expression,which may be ameliorated by the administration of tenidap.

Objective To study the effect of desogestrel and ethinyl estradiol(DEE)pre-treatment combined with gonadotropin releasing hormone agonist(GnRH-a)stimulation in in vitro fertilization-embryo transplantation(IVF-ET).MethodsA retrospective analysis was performed in 101 infertile women who received a short protocol of GnRH-a for IVF-ET treatment from June 2004 to June 2007 in the Reproductive Medicine Center of First Affiliated Hospital of Wenzhou Medical College.Patients had been pre-treated with oral contraceptive pill(OCP)for two months before GnRH-a combined with recombinant follicle stimulation hormone(r-FSH)treatment(study group,n=42)or had not been pretreated with OCP(control group,n=59).A statistical analysis of two groups was carried out for the assessment of ovulation stimulating effect of OCP and its influence on the IVF.Results Serum FSH was significantly decreased after OCP in the study group.Twelve pregnancies were obtained including 1 case of spontaneous abortion at 7 weeks in the study group,and 11 pregnancies were obtained including 2 cases of spontaneous abortion during 7-9 weeks in control group.The clinical pregnancy rates in the study group(23％,12/53)was higher than that in the control group(17％,11/63),but the differences were not significant(P＞0.05).The miscarriage rate in the study group(8％,1/12)was lower than that in the control group(18％,2/11),however no significant differences were found between them(P＞0.05).The cycle cancellation rate in patients of the study group(5％,3/56)was significantly lower than that in patients of the control group(17％,13/76,P＜0.05).The differences between patients of the two groups with respect to age,basal level of FSH and luteinizing hormone (LH),antral follicle counts,the mean number of oocyte retrieval,the days of stimulation,total dose of rFSH used,fertilization rate and embryo cleavage rate,however were insignificant.ConclusionOCP pretreatment combined with short protocol of GnRH-a stimulation in IVF could significantly decrease the cycle cancellation rate,with a declining miscarriage rate and increasing pregnancy rate.

Objective To investigate the repair effects of co-expression of the VEGF and BMP genes via an adeno-as-sociated viral vector on early steroid-induced avascular necrosis of the femoral head in rabbits. Methords To construct ani-mal model of early SANFH and screen by MRI. The SANFH animal were divided into rAAV-IRES-hrGFP(AAV-GFP), rAAV-hVEGF165-IRES-hrGFP(AAV-VEGF), rAAV-hBMP-7-IRES-hrGFP(AAV-BMP)and rAAV-hVEGF165-IRES-hBMP-7(AAV-VEGF/BMP)groups. The four group virus vectors were injected into core decompression region at the dose of 25μl/site after core decompression operation directly. Repair effects of rAAV vector on early SANFH in rabbits were evaluated by Western blot assay, HE staining, immunohistochemical staining, MRI, radionuclide bone scan, blood vessel counting detected by ink perfusion and fro-zen section, Micro-CT and biomechanical strength detection on the 12th week post-injection. Results Model success ratio was 73.33%. rAAV-hVEGF165-IRES-hBMP-7 virus vector efficiently expressed hVEGF165 and hBMP-7 genes on the 12th week after rAAV injection. hVEGF165 protein secreted in vivo promoted metabolism in core decompression region by increasing the quantity of new vessels and improving the blood supply;hBMP-7 protein secreted in vivo promoted new bone formation in core decompres-sion region by increasing bone mineral density and improving bone biomechanical strength. The AAV-VEGF/BMP group can pro-mote repair effects more effectively than AAV-VEGF group or AAV-BMP group. Conclusion The adeno-associated viral vectors co-expressing hVEGF165 and hBMP-7 can promote repair effects on early SANFH in rabbits by increasing the blood supply and strengthening the bone quality of femoral head.

From August 2007 to January 2009 a total of 95 patients with complex renal calculi were treated with CT ( n = 32 ), X-ray ( n = 33 ) or ultrasound ( n = 30 ) guided percutaneous nephrostomy and ureteroscopic holmium laser lithotripsy respectively. The CT guided procedure had lower positioning time,positioning failure rate, complication rate and residual stone rate than those of X-ray and ultrasound localization, particularly had advantages in the stone clearance rate and complications rate ( all P ＜ 0. 05 ).CT guided localization can be chosen in the following conditions: higher kidney position, large staghorn calculi or renal pelvis stones without hydronephrosis, with congenital renal malformations or failure of ultrasound or X-ray localization.

Objective To explore the application of CT value in calculating the proton incident energy in proton treatment planning system. Methods Bethe-Block formula and the formula for calculating the proton range were analyzed to study the correlation of the range of proton beam ( 70-250 MeV ) between a variety of radiation equivalent material and water. Procedure of Monte Carlo SRIM2008 was used to verify the possibility of a constant proportional coefficient of range ( Ci ). The proportional coefficient ( Ci ) of range in radiation-equivalent material and the CT value were fitted by using Origin 8.0 software to study the functional relation of CT value and Ci. The actual range of proton was equivalent to a range of water and incident proton energy could be calculated. Results There was a constant range of Ci of proton beam (70-250 MeV) between a variety of radiation equivalent material and water. There was a functional relation between CT value and Ci ( r = 0.999). The actual range of proton in radiation equivalent material can be equivalent to a range of the water. Conclusions CT values and a range of proportional coefficient ( Ci ),and the actual required range of the tumor could be used to accurately calculate the water equivalent range,and the incident proton energy to the position of Bragg peak. A new exploration for using CT technology in proton treatment planning system could be obtained.

Objective To develop a clinical nomogram for predicting the probability of bladder outlet obstruction (BOO) in male LUTS/BPH using the most common and noninvasive parameters in clinical practice , with the hope of detecting BOO individually and precisely. Methods Retrospectively analyze the outpatients and inpatients of male LUTS/BPH from November 2003 to November 2015 in Guangzhou First People′s Hospital. Collect the Pressure-flow study parameters and other clinical parameters including Qmax , PV, TZV, TZI, PSA, and PVR. Find out the best independent predictors on the diagnosis of BOO and develop the nomogram for pre-dicting BOO. Results The data from 1 599 patients were analyzed. The areas under the ROC curve (AUCs)of PV, TZV, TZI, PSA, Qmax, and PVR were 0.803, 0.807, 0.698, 0.775, 0.742, and 0.641, respectively. Qmax, PV, and PSA were selected as the best clinical parameters to predict BOO. The Logistic regression equa-tion is Log(p)=0.332 4 - 0.201 8*Qmax + 0.026 6*PV + 1.135 1*PSA. Finally, a nomogram model was developed by R statistical software. This nomogram showed a concordance index of 0.854 according to the inter-nal validation of the model. Conclusions The clinical nomogram presented a high accuracy (85.4%) in de-tecting BOO, which would help predicting BOO in male LUTS/BPH noninvasively, individually, accurately, and providing valuable reference and guidance in clinical decision.

Objective To find out the difference of responses to HDT between females and males of different occupations.Methods Healthy female employees(group A,n=11)and female pilots(group B,n=10)and male special pilots(group C,n=14)and male employees(group D,n=7)were tested with-30? head-down tilt for 45 min.Results Heart rate(HR)of females and males all decreased with time during HDT,especially male employees group and female pilots group(P

Objective To investigate the characteristics and risk factors for allogeneic transfusion after unilateral total knee arthroplasty (TKA).Methods 852 patients (663 female and 189 male) underwent primary unilateral TKA from January 2014 to December 2014 were included.Average age of included patients were 64.9±7.9 years old (22-87).829 patients were osteoarthritis,others rheumatoid arthritis.The ASA score,BMI,doctor groups,diabetes,hypertension,thrombus (duplex color Doppler ultrasonography),pre-HGB,pre-HCT,pre-TP,pre-Cr,pre-BUN,pre-PT,operation time,starting MABP of the operation,anesthesia and TXA were collected.Potential risk factors for allogeneic transfusion were analyzed statistically via univariate and multivariate regression analysis.Results The preoperative hemoglobin level in 71 (8.3％) patients were lower than that in normal (male ＜120 g/L,female ＜110 g/L).The hematokrit in 27 (3.2％) patients were lower than that in normal (male ＜40％,female ＜37％).TXA was used in 740 (86.9％) patients during the operation.Allogeneic transfusion was performed in 202 (23.7％) the patients after TKA.The differences in the following items within two groups were statistically significant via univariate analysis (P＜0.05),female and male,≥70 and ＜ 70 years,pre-HGB normal and low,pre-HCT normal and low and with and without TXA.Female [OR=2.283,95％CI (1.405,3.711)],patient age of 70 years or older [OR=2.048,95％CI (2.064,4.292)],preoperative hemoglobin level low [male ＜ 120 g/L,female ＜ 110 g/L,OR=1.506,95％CI (1.376,4.427)] and preoperative hematokrit below normal [male ＜ 40％,female ＜ 37％,OR=3.412,95％CI (1.086,6.591)] were independent predictors for postoperative allogeneic transfusion in multivariate regression analysis.Conclusion The allogeneic transfusion rate after unilateral TKA was 23.7％.Female,older than 70 years and preoperative anemia were independent predictors for postoperative allogeneic transfusion after TKA.TXA can effectively decrease the postoperative allogeneic transfusion rate and the amount of transfusion.

Multidrug resistance (MDR) in human cancer is one of greatest challenges in cancer therapy. Natural products, especially the alkaloids, exert reversed effects on MDR with low toxicity, by interacting with various targets. In this review article, we summarize the recent progress made in the research of the main alkaloids, including classification, function, mechanism, research status, and application in reversing MDR.
Alkaloids ; administration & dosage ; chemistry ; Animals ; Biological Products ; administration & dosage ; chemistry ; Drug Antagonism ; Drug Resistance, Multiple ; Drug Resistance, Neoplasm ; Humans ; Neoplasms ; drug therapy