Aim To investigate the effects of emodin on the contraction of gallbladder smooth muscle(GBSM)and the L-type calcium current in GBSM cells.Methods Gallbladder muscle strips were obtained from adult guinea pigs and the resting tension was recorded.Gallbladder smooth muscle cells were isolated by enzymatic digestion,and calcium current was recorded by the whole-cell patch clamp method.Results Emodin-induced contraction of GBSM was significantly attenuated by pretreatment with nifedipine.Emodin increased the L-type calcium current in a dose-dependent manner.When 10 ?mol?L-1 emodin was applied to GBSM cells,the amplitude of L-type calcium current at +10 mV was enhanced by(45.2?2.26)%.In the presence of PKC inhibitor,staurosporine,emodin did not significantly affect the calcium current.Conclusion Emodin enhances L-type calcium current via PKC-dependent pathway and promotes gallbladder contraction.

Humans ; Myocardium ; Stem Cell Transplantation ; Stem Cells ; Tissue Engineering

Objective To explore the changes in cardiac index and oxygenation index in sepsis piglets after nitric oxide (NO) gas inhalation. Methods A piglet model of sepsis was induced by intravenous infusion of Gram-negative bacterial endotoxin (LPS), then the piglets were randomly divided into two groups. NO group (n=8) was administered with inhaled nitric oxide of 80ppm via volume control (VC) mechanical ventilation for one hour, while the control group (n = 4) received mechanical ventilation with VC and was observed for one hour to assess the stability of the model. The parameters of oxygenation and hemodynamics were measured by PICCO and arterial blood gas analysis every fifteen minutes for one hour. Results Injection of endotoxin induced a stable pig model of sepsis. PH, HCO3-, arterial oxygen pressure (PaO2), mean arterial pressure (MAP) and cardiac index in this model were significantly lower the baseline values (P < 0.01). Arterial oxygen pressure and cardiac index were significantly higher in N0 group than in the control group (P<0.01). Heart rate (HR), central venous pressure (CVP), global end-diastolic volume index (GEDI) and intrathoracic blood volume index (ITBI) did not significantly differ between NO group and the control group. Conclusions Inhalation of nitric oxide gas can significantly improve oxygenation and cardiac function in piglets with sepsis.

Photosynthetic bacteria(PSB) showed great promise in biohydrogen production. Chromatium vinosum was able to utilize the fermentation waste of Klebsiella oxytoca for both photo-fermentative and dark-fermentative hydrogen production. The content of residual sugars and main organic acids decreased obviously after hydrogen production by C.vinosum. The maximal hydrogen production of C.vinosum was obtained at pH 6.5 adding extra 0.1%(W/W) NH_4Cl. Under photo-fermentative conditions, the content of butyric acid decreased by 54.38%, and the maximal hydrogen yield was 36.97 mL/mg cell. Under dark-fermentative conditions, the content of butyric acid decreased by 36.1% and the maximal hydrogen production was achieved as 37.50 mL/mg cell.

Objective To describe a novel surgical technique for male long-segment urethral stric- ture after pelvic trauma using the intact and pedieled pendulous urethra to replace the bulbar and membra- nous urethra,and then reconstructing anterior urethra.Methods Three patients with long-segment post- traumatic bulbar and membranous urethral strictures with short left pendulous urethras who had undergone several failed previous surgeries were treated with staged pendulous-prostatic anastomotic urethroplasty fol- lowed by reconstruction of the anterior urethra.This procedure was divided into 3 stages.The first-stage sur- gery was mobilization of anterior urethra down to the coronary sulcus and then re-routing the prostatic urethra followed by pendulous-prostatic anastomotic urethroplasty with transposition of penis to perineum.The sec- ond-stage surgery was transecting the anterior urethra at the site of coronary sulcus 6 months later when it was re-vaseularized,then straightening the penis and performing urethroperineostomy.The third-stage surgery was reconstruction of anterior urethra 6 months later.Results Case 1 reported satisfactory voiding postopera- tively.Retrograde urethrography showed that the urethra was patent with no post-voiding residual urine (PVR),and bilateral vesicoureteral reflux almost disappeared.The Qmax was 18.8ml/s,and 18ml/s after the third stage surgery and at 2-year follow-up.Case 2 also had satisfactory voiding.A 22F urethral catheter could smoothly pass through the urethra,and Qmax was 19.5 ml/s with no PVR at 2-year follow-up.Case 3 underwent the first stage surgery through perineal and pubic routes.The urethrorectal and urethroperineal fis- tulas were excised and repaired simultaneously.After operation the fistulas healed,but the stenostomia resul- ting from wound infection needed further treatment.Conclusions This procedure is effective for men with complex long-segment post-traumatic bulbar and membranous urethral strictures,especially for those undergo- ing failed previous surgical treatment.

ObjectiveTo explore the role of β-catenin in the proinvasive consequences of hypoxia in hepatocellular carcinoma (HCC).MethodsWe established in vitro and in vivo hypoxic models using the highly metastatic MHCC97 and the stable red fluorescent protein-expressing MHCC97-R cells.The role of β-catenin in hypoxia-mediated aggressiveness was investigated by β-catenin knockdown.ResultsHypoxia caused a pronounced arrest of proliferation in MHCC97 cells,suppressed tumor growth in MHCC97-R xenografts,but promoted in vitro invasiveness and in vivo metastasis.β-Catenin-silencing by short hairpin significantly inhibited the enhanced invasiveness of MHCC97 cells due to hypoxia,reduced the increase in distant metastasis by hepatic arterial ligation,but failed to further restrain cell proliferation.Conclusionβ-Catenin in HCC cells plays an essential role in the hypoxia-induced metastatic potential.A reduction of βcatenin expression inhibited the proinvasive consequences of hypoxia in HCC.

Objective To explore the clinical effect of procedure for prolapse and hemorrhoids (PPH) treating for Ⅲand Ⅳ degree hemorrhoid under the local anesthesia.Methods One hundred and fifty patients with Ⅲ and Ⅳ degree hemorrhoid were divided into two groups randomly.One group was the local anesthesia group (LA group) which included 73 cases,the other one was the combined spinal epidural anesthesia group (CSE group) which included 77 cases.Compared the safety and efficacy of different procedure.Results The original symptom of the two groups were improved.There was a significant difference in the time of hospitalization time and the hospitalization expense between the two groups (P＜0.05).The LA group was(4.8±1.1)days with(3980±639)yuan,and the CSE group was(6.8±1.1) days with(5128±728)yuan.The rates of two groups of urine retention were 9.6% and 24.7% (P＜0.05) after the operation respectively,and there were no significant differences in recovery normal activity time,the pain index,copracrasia and pruritus,the bleed,the anal fistula,the prolapse of hemorrhoid,the skin tag (P ＞0.05).Conclusion PPH under the local anesthesia is safe,compare to the combined spinal epidural anesthesia,it excels in shortening the hospitalization time and reducing the hospitalization expense,also it can reduce significantly the rate of urine retention after operation.

Objective To investigate the effectiveness and safety of applying midzolam combined with propofol in conscious sedative and analgesic colonoscopy.Methods 145 cases of ASA I-II were included in this study.The patients were randomly divided into two Groups:Group A(painless colonoscopy),Group B(conventional colonoscopy).Group A was given midazolam 0.05mg/kg、fentanyl 1?g/kg intravenously before operation.Group B was underwent conventional colonoscopy.Results The MAP,SpO2 at 1min after injection is lower significantly than that before injection in Group A(P0.05).The incidence of respiratory inhibition(SPO2

OBJECTIVE: To probe into the pharmacological mechanism of the Chinese medicinal compound Qinggong Zhixue Granule (QGZXG), which has an effect of replenishing qi to activate blood and expelling stasis to stop bleeding, in treating irregular vaginal bleeding after medical abortion. METHODS: Healthy female KM mice and mice with immunodeficiency caused by cytoxan (CTX) were chosen as experimental subjects. The effects of QGZXG on the phagocytization of the mice's monocytes (by using the method of carbon particles expurgation), the delayed type hypersensitivity caused by 2,4-dinitrochlorobenzene (DNCB) and the content of antibody of hemolysin in the mice's serum were observed. RESULTS: (1) QGZXG improved the ability of the liver and spleen of immunodeficient mice to expurgate carbon particles. There was an significant statistical difference between the CTX treated group and the low dose group as well as the high dose group (P < 0.01) and a statistical difference between the CTX treated group and the medium dose group (P < 0.05). (2) QGZXG boosted the cellular immunity of immunodeficient mice. The ear swelling of mice in low, medium and high dose group was more obvious than that in the CTX treated group, and this difference was significant in statistics (P < 0.01). (3) QGZXG raised the content of the antibody of hemolysin in the serum of immunodeficient mice. A statistical difference occurred between the high dose group and the CTX treated group. The low and medium dose also had a tendency of such effect. CONCLUSION: QGZXG can improve both the specific and non-specific immunity of the immunodeficient mice, and therefore accelerate the recovery of the whole body and endometrium after parturition and abortion. In consequence, it leads to shorter duration and less quantity of vaginal bleeding after medical abortion.

Objective To observe the effect of exposure of emphysema with intermittent hypoxia on oxidative stress injury of myocardial cells in rats. Methods Sixty male Wistar rats were divided randomly into four experimental groups(each n=15). The normal control group was bred normally. The emphysema group was exposed to cigarette smoke twice a day(once 30 minutes). The intermittent hypoxia(IH)group was exposed to intermittent hypoxia circumstance 8 hours/day,and the emphysema with IH group was exposed to cigarette smoke twice a day (once 30 minutes)and intermittent hypoxia circumstance 8 hours/day. Each group was exposed for 8 weeks. At the beginning of 9 weeks,the blood gas analysis was performed in 5 rats selected randomly from each group,and the rest rats were sacrificed and their hearts and lungs were taken. Under light microscope,the lung tissues stained with hematoxylin-eosin(HE)were examined. The lung pathology and the results of blood gas analysis showed that the emphysema with IH rat model was established successfully. The levels of malonaldehyde(MDA)and superoxide dismutase(SOD)in rat myocardium were measured by enzyme-linked immunosorbent assay(ELISA),and the subunit p22phox mRNA expressions of nicotinamide adenine dinucleotide phosphate(NADPH)-oxidase were detected by real-time reverse transcription-polymerase chain reaction(RT-PCR). Results Compared with the normal group, the MDA levels and p22phox mRNA expressions were increased obviously in emphysema group, IH group and emphysema with IH group〔MDA(μmol/g):2.93±0.54, 3.58±0.63, 4.51±0.72 vs. 1.75±0.56, p22phox mRNA:0.043±0.004,0.067±0.015,0.123±0.016 vs. 0.018±0.002,all P<0.05〕,but the activities of SOD were decreased significantly(U/mg:36.07±4.79,33.51±7.12,24.29±5.36 vs. 46.08±5.12,all P<0.05). In emphysema with IH group,the increase of MDA levels and p22phox mRNA expressions and decrease of SOD levels were more remarkable compared with those in emphysema group and IH group(all P<0.05). The expression of p22phox mRNA was positively correlated with MDA level(r=0.734,P<0.001). Conclusion The myocardial tissue oxidative stress injury in rats induced by emphysema with intermittent hypoxia exposure is more serious than that induced by exposure of either emphysema or intermittent hypoxia alone,NADPH oxidase possibly being the important medium of myocardial cell response to oxidative stress.