Time filter

Source Type

Li J.,Central Hospital of Xiangtan | Yang L.,Central South University | Wu H.,Central South University
Journal of Central South University (Medical Sciences) | Year: 2011

Objective To observe the proliferation inhibition and apoptosis promotion effect of oridonin on PC-3 cells. Methods PC-3 cells were treated with different concentrations of oridonin. MTT assay and drug concentration-time survival curve were used to test the effect of oridonin on the PC-3 cells. The percentage of earlier apoptosis cells was analyzed by flow cytometry. The protein expression of caspase-3 , BcI-2, and Bax in the PC-3 cells was detected by Western blot. Results Oridonin effectively inhibited the proliferation of PC-3 cells in both concentration- and time-dependent manner, and the IC50 of PC-3 cells was 10.29 μmol/L. Hochest33258 staining and flow cytometry deteced that oridonin induced the apoptosis of PC-3 cells in a concentration-dependent manner (P < 0. 05 ). Oridonin down-regulated Bcl-2, up-regulated Bax protein, and activated caspase-3 in a concentration-dependent manner in the PC-3 cells. Conclusion The apoptosis of PC-3 cells induced by oridonin might be associated with the mitochondrial pathway.

Tang Z.,Central South University | Li D.,Central South University | Zhang X.,Central South University | Yi L.,Central South University | And 3 more authors.
BMC Urology | Year: 2014

Background: The simplified International Index of Erectile Function (IIEF-5) is a convenient, reliable and validated diagnostic tool for erectile dysfunction (ED). However, few studies focused on IIEF-5 in ED patients with different pathophysiological causes.,We aim to compare the IIEF-5 score among ED patients with specific pathophysiologies in this study. Methods. The IIEF-5 score of 3,327 ED patients (median age 39 years) was analyzed. The primary causes of ED were determined by comprehensive diagnostic procedures in the urology/andrology clinics in five training hospitals. Patients with uncertain pathophysiologic cause were excluded. Results: 176 patients were excluded, 3151 patients with ED history between 0.5 year and 20 years, were enrolled. The causes of ED was classified as psychogenic (59.2%), vasoculogenic (21.3%), neurogenic (4.1%), anatomical/structural (2.8%), hormonal (7.1%) or drug-induced (5.5%). A significant difference was detected in the median IIEF-5 score between psychogenic ED and organic ED (15 (IQR 13, 17) versus 12 (IQR 9.5, 14.5), P < 0.001). There was no significant difference of IIEF-5 scores among the organic groups (P = 0.073), or between arteriogenic and venogenic groups (13 (IQR 10.5, 15.5) versus 13 (IQR 11-15), P = 0.912 (adjusted α = 0.017)). However, the median IIEF-5 score of those with a mixed vascular cause was the lowest among vasculogenic patients (11 (IQR 8.5-13.5), scores for the three groups: P = 0.003.). Conclusions: The IIEF-5 scores of men with psychological ED are higher than those with organic causes, but there is no difference among patients with different organic pathophysiologies. Our data indicate that IIEF-5 is not a definitive diagnostic tool to discriminate the pathophysiological causes of ED. © 2014 Tang et al.; licensee BioMed Central Ltd.

Liu H.,Central South University | Zhang W.,Central Hospital of Xiangtan | Tian F.-F.,Central South University | Kun A.,Huaian First Peoples Hospital | And 3 more authors.
Immunological Investigations | Year: 2015

CD4+ T cells and many cytokines play critical roles in the pathogenesis of Guillain-Barré Syndrome (GBS), an immune-mediated inflammatory disease. However, the role of IL-35, a novel member of the IL-12 cytokine family, in this kind of disease has not yet been elucidated. In this study, we investigated the functional changes of CD4+ T cells from GBS patients with IL-35 treatment in vitro. This study involved 21 GBS patients and an equal number of healthy controls (HCs). The results indicated that the average concentration of IL-35 in the plasma of GBS patients was lower than that of healthy controls (HCs). Increased levels of STAT1, STAT3 and STAT4 proteins and T-bet, ROR γt, IFN-γ and IL-17A mRNA were observed in CD4+ T cells from GBS patients. In contrast, the levels of STAT5 and STAT6 proteins and GATA3, Foxp3, IL-4 and TGF-β1 mRNAs were decreased in GBS patients in comparison with those of HCs. In addition, treatment of CD4+ T cells from GBS patients with IL-35 upregulated IL-35, STAT5 and STAT6 protein and T-bet, GATA3, Foxp3, IFN-γ, IL-4, IL-17A and TGF-β1 mRNA while inhibited levels of STAT3 and STAT4 protein and RORγt and IL-17A mRNA. These results indicate that IL-35 might play a potential role in GBS pathogenesis. Further studies are required in order to evaluate its role in GBS. © 2015 Taylor and Francis Group, LLC.

Jin L.,Central Hospital of Xiangtan | Luoyan Y.,Central South University | Hongtao W.,Central South University
Chinese Journal of Andrology | Year: 2014

Objective To explore the synergistic effects of survivin antisense oligonucleotides combined with Oridonin on growth, apoptosis, and the expression of survivin of PC-3 cells. Methods Human prostate carcinoma cells PC-3 on logarithmic growth phase were used in this study. The cell vitality was determined by MTT assay. The combination index (CI) was calculated using Pharmaconamics CalcuSynsoftware. The apoptotic rate was examined by flow cytometer (FCM). The expression of survivin was detected by Western Blot and Real-time Fluorescent Quantitation-PCR. Results After transfection with antisense Survivin RNAi, the proliferation of PC-3 cells was inhibited markedly. An obvious apoptosis was found in the transfected PC-3 cells. The inhibitory effect of combined administration of survivin antisense and Oridonin on cell proliferation was much stronger than that of the single way (P <0.01). It showed that there was a synergistic effect (Fa<0.80). Western Blot and RT-PCR assays demonstrated that survivin antisense and Oridonin all inhibited the expression of survivin(P <0.01). Conclusion Combined survivin antisense and Oridonin significantly inhibits cell proliferation, induces cell apoptosis and down-regulates survivin expression in PC-3 cells, indicating that survivin antisense and Oridonin have a synergistic effect on PC-3 cells. © 2014, Shanghai Jiaotong University School of Medicine. All Rights Reserved.

Li D.,Central South University | Jiang X.,Central South University | Zhang X.,Central South University | Yi L.,Central South University | And 4 more authors.
Urology | Year: 2012

Objective: To assess the pathophysiologic composition and age structure of erectile dysfunction (ED) in men visiting outpatient clinics in China. Methods: We studied 3327 consecutive ED outpatients (median age 39 years) from 2006 to 2010 in the 5 training hospitals in China. Every patient was independently evaluated by an experienced urologist/andrologist using comprehensive diagnostic procedures. The simplified International Index of Erectile Function was used to assess the severity of ED. Results: Most patients (95.0%) were <60 years old, and none were >70 years old. The psychogenic patients were younger and had greater percentage than any other patients. Vasculogenic factors were a major etiology of organic ED. A significant difference was found in the age distribution between the patients with psychogenic ED and those with organic ED (P =.000). Diabetes, hypertension, coronary artery disease, and hyperlipidemia played significant roles in affecting the severity of ED in a statistical model, including age. The International Index of Erectile Function scores decreased with age (rs = -0.199, P =.000). Moreover, the percentage of severe and moderate cases increased with age (P =.003 and P =.002, respectively). However, the constituent ratio of patients sharply declined from 30.3% to 4.5% with age. Conclusion: The number of men visiting outpatient clinics with psychological ED is greater than the number with organic causes in China. The age of the Chinese patients with ED who seek medical help is young and this is mainly because of inadequate sex education to young men and because most older patients are reluctant to visit the hospital just for the loss of erectile function. © 2012 Elsevier Inc.

Discover hidden collaborations