Evaluation of diuretic and laxative activity of hydro-alcoholic extract of Desmostachya bipinnata （L,） Stapf in rats

OBJECTIVE： In continuation to the growing evidence for therapeutical potential of Desmostachya bipinnata （Linn） Stapf, the current pharmacological study was carried out to evaluate the diuretic and laxative activity of its hydro-alcoholic extract in rats. METHODS： The hydro-alcoholic extract of D. bipinnata whole plant was prepared by using Sox- hlet extractor and subjected to analysis by standard preliminary phytochemical tests. Evaluation of both diuretic and laxative activity was carried out using standard methods as reported earlier. Frusemide （20 mg/kg） was served as positive control for diuretic activity and sennosides （10 mg/kg） served as negative control for laxative activity. RESULTS： The hydro-alcoholic extract showed significant diuretic activity and was found to be the most potent in increasing the urinary output at 500 mg/kg when the effect was compared with that of the standard frusemide （P〈0.01）. Moreover, this extract was found to be most effective in increasing urinary electrolyte concentration （Na＋, K＋, and Cl-） at both doses tested. Whereas the results for laxative activity showed minimal increase of feces output at the dose of 500 mg/kg and the increase was negligible when compared with that of the standard drug sennosides. CONCLUSION： Altogether, the above significant findings validate and support its folkloric diuretic use and lend pharmacological credence to the ethno-medical use of this plant in traditional system of medicine, which demands further studies to investigate its active constituents, as well as its use and safety.     

UniPron is A Fully Effective Non-hormonal Reversible Contraceptive in Baboon Model （Papio Anubis）

Objective To determine the safety and efficacy of UniPron as a reversible contraceptive.
Methods Vaginal swabs were obtained before and after UniPron administration, cultured onto appropriate culture media and bacteria identification was done based on type of media used, Gram stain reactions, colony morphology and biochemical tests. Vaginal biopsy tissues were processed using paraffin wax method, stained with hematoxylin and eosin and examined under light microscopy to determine the effect of the product on vaginal tissues. The effect of UniPron on sperm was examined by mixing the product with electroejaculated spermatozoa in vitro at different concentrations. For efficacy studies, male baboons of proven fertility were mated with UniPron treated or untreated females of proven fertility during the fertile stages.
Results All the five females （100%） that were treated with UniPron did not conceive and they regained total fertility when the treatment was stopped while all the controls conceived. At a concentration of 40%, UniPron completely immobilized spermatozoa in an in-vitro system. UniPron mechanism of action was by lowering the vaginal pH and on application in baboon, the pH was lowered for at least 3 h after which it went back to normal.
Conclusions As we plan for a study to test UniPron as a microbicide to prevent STIs including HIV, our current study has established that this novel product is effective in contraception and harmless to vaginal tissues and vaginal microbial flora in a baboon model （Papio anubis）.     

Effect of the disruption of three cytoskeleton components on chondrocyte metabolism in rabbit knee cartilage

Background Chondrocytes＇ phenotype and biosynthesis of matrix are dependent on having an intact cytoskeletal structure.Microfilaments,microtubules,and intermediate filaments are three important components of the cytoskeletal structure of chondrocytes.The aims of this study were to determine and compare the effects of the disruption of these three cytoskeletal elements on the apoptosis and matrix synthesis by rabbit knee chondrocytes in vitro.Methods Chondrocytes were isolated from full-thickness knee cartilage of two-month-old rabbits using enzymatic methods （n=24）.The isolated cells were stabilized for three days and then exposed to low,medium,and high doses of chemical agents that disrupt the three principal cytoskeletal elements of interest：colchicine for microtubules,acrylamide for intermediate filaments,and cytochalasin D for actin microfilaments.A group of control cells were treated with carrier.Early apoptosis was assessed using the Annexin-FITC binding assay by flow cytometry on days 1 and 2 after exposure to the disrupting chemical agents.The components and distribution of the cytoskeleton within the cells were analyzed by laser scanning confocal microscopy （LSCM） with immunofluorescence staining on day 3.The mRNA levels of aggrecan （AGG） and type Ⅱ collagen （Col-2） and their levels in culture medium were analyzed using real-time PCR and enzymelinked immunosorbent serologic assay （ELISA） on days 3,6,and 9.Results In the initial drug-dose-response study,there was no significant difference in the vitality of cells treated with 0.1 μmol/L colchicine,2.5 mmol/L acrylamide,and 10 μg/L cytochalasin D for two days when compared with the control group of cells.The concentrations of colchicine and acrylamide treatment selected above significantly decreased the number of viable cells over the nine-day culture and disrupted significantly more cell nuclei.Real-time PCR and ELISA results showed that the mRNA levels and medium concentrations of AGG and Col-2 were significantly decreased for     

Liuwei Dihuang,a traditional Chinese herbal formula,suppresses chronic inflammation and oxidative stress in obese rats

OBJECTIVE： To investigate the anti-inflammatory, anti-oxidative stress, and adipokine-ameliorating effects of Liuwei Dihuang （LWDH）, a traditional Chinese herbal formula, in obese rats. METHODS： After 2 weeks of acclimation with free access to regular rodent chow and water, obese-prone-caesarean-derived （OP-CD） rats were fed a modified AIN-93G diet containing 60% energy from fat. Treatment was performed twice daily by gavage feeding with 500, 1 500, or 3 500 mg/kg body weight LWDH suspended in water （n=12 rats per group）. Twelve obese-resistant-CD （OR-CD） rats were fed the atherogenic diet and gavaged with water, and served as the normal control. Blood biomarkers of inflammation, oxidative stress and adiponectin were measured post-sacrifice and used to determine the treatment effect of LWDH and assess the suitability of OR/OP-CD rats for studying these parameters. RESULTS： After 9 weeks of treatment, LWDH lowered serum C-reactive protein （CRP） and tumour necrosis factor-α （TNF-α） levels. Serum interleukin-6 （IL-6） levels showed a tendency towards reduction, but were not significantly different from the OP-CD control. Liver superoxide dismutase （SOD） activity was increased in response to all three doses of LWDH, while the levels of reduced （GSH） and oxidized glutathione （GSSG） and thiobarbituric acid reactive substances （TBARS） were unchanged. Serum adiponectin levels were increased in response to oral administration of LWDH at the dose of either 500 or 1 500 mg/kg body weight. In addition, comparisons between OR-CD and OP-CD rats revealed differential, and for some biomarkers, conflicting characteristics of high-fat diet-fed OP-CD rats in reference to obese human subjects in terms of inflammatory and oxidative stress biomarkers and circulating adiponectin levels. CONCLUSION： The results show, for the first time, the anti-inflammatory, anti-oxidative stress and adiponectin-ameliorating effects of LWDH in obese rats. The suitability of the OP-JOP-CD rat model as     

New Mechanism of Herb-herb Interaction between Ginseng and Trogopterus Based on CYPs in Rat Livers

The study was designed to investigate the potential mechanism of herb-herb interaction between ginseng and Trogopterus （Trg） based on Cytochrome P450 isozymes （CYPs） in rat livers. We estimated the influence on CYP1A2, CYP2E1, and CYP3A1/2 activity caused by ginseng and Trg used in combination. The CYP1A2 and CYP2E1 enzyme activity were induced by ginseng and Trg used in combination. And this induction effect was caused via inducing CYP1A2 and CYP2E1 protein expression which was supposed caused by inducing the gene expression of CYP1A2 and CYP2E1.     

益智健脑颗粒联合针灸对阿尔茨海默病大鼠学习记忆的影响

目的观察益智健脑颗粒联合针灸对阿尔茨海默病（Alzheimers disease,AD）大鼠学习记忆的影响。方法将大鼠随机分为假手术组（A组）、模型组（B组）、针灸组（C组）、益智＋针灸组（D组）各10只,B、C、D 3组分别以海马CA1区注射β淀粉样蛋白25-35（Aβ25-35）造模,A组注射等量的双蒸水,各组分别治疗20 d后行Morris水迷宫试验,观察大鼠学习记忆能力变化。结果B组较A组的平均潜伏期明显延长,差异具有统计学意义（P〈0.05）;与B组比较,C组、D组的平均潜伏期明显缩短,过台次数增多,差异具有统计学意义（P〈0.05,P〈0.01）;与C组比较,D组的潜伏期缩短,过台次数增多,差异具有统计学意义（P〈0.05）。结论益智健脑颗粒联合针灸能够提高Aβ25-35介导的AD模型大鼠的学习记忆能力。     

The Targeted Pro-apoptotic Effect of scFv-mediated Delivery of Caspase-6 on HER2-positive Osteosarcoma Cells

Objective To investigate the pro-apoptotic effect of scFv-mediated delivery of caspase-6 fusion protein on osteosarcoma E 10 cells. Methods The expression of human epidermal growth factor receptor-2 （Her-2） in osteosarcoma cell line E10 was examined by flow cytometry analysis. ScFv-mediated delivery of caspase-6 was generated by sequential fusion of the genes of a signal peptide, a single-chain Her-2 antibody （e23sFv）, a PEA translocation domain （PEA aa253-264）, and an recombinant caspase-6. The pCMV-immunocaspase-6 was produced by cloning above mentioned fusion genes into pCMV plasmid, and then pCMV-immunocaspase-6 plasmid mixed cationic liposome was transfected into E10 cells. The expression of fusion gene on transfected E10 cells was detected by immunocytochemical staining, The pro-apoptotic effects of fusion gene expression on morphology and growth status of E10 cells were observed by trypan blue cell staining, electron microscopy and MTT assay. Results The fusion protein was detected in the cytoplasm of the transfected E10 cells. These cells presented typical characteristics of apoptosis as detected by electron microscopy. MTT assay revealed that the proliferation of transfected E10 cells was suppressed than that of non- or mock-transfected cells （P〈0.01）. Conclusion ScFv-mediated delivery of caspase-6 fusion protein can induce apoptosis of Her-2 positive osteosarcoma E10 cells, suggesting the potential of this strategy for the treatment of human high-grade osteosarcoma.     

WHO西太区与“世界中医药学会联合会”中医名词术语国际标准比较研究：精、神、气、血、津、液部分

精、神、气、血、津、液是中医理论中6个非常重要的概念，有关术语在《WHO西太区传统医学国际标准名词术语》中一共收录了59条，“世界中医药学会联合会”（以下简称世中联）《中医基本名词术语中英对照国际标准》中收录了58条。血、津、液的内涵较为具体，有一定的物质基础，理解并不困难。翻译上虽有差异，但亦不难统一。精、神、     

表皮生长因子受体酪氨酸激酶抑制剂在非小细胞肺癌应用的瓶颈——获得性耐药

以表皮生长因子受体酪氨酸激酶抑制剂（epidermal growth factor receptor-tyrosine kinase inhibitor,EGFR-TKI）分子靶向治疗研究为肇始,转化性研究使基础实验和临床实践间的鸿沟迅速填平,改变着人们认识治疗肺癌的视角。无可否认,EGFR-TKI上市后极大地延伸了肿瘤学家治疗肺癌的手段,但不管从临床经验、临床研究数据、分子生物学层面还是文献计量学的角度,     

Iloprost inhibits fracture repair in rats

Background Previous studies have shown that prostaglandins （PGs） dramatically stimulate healing processes in bone.However,the effect of prostaglandin l2 （PGI2） on fracture healing remains unclear.To investigate the effect of PGI2,a study on fracture healing process in closed tibia fractures was designed.Methods Thirty-six Sprague-Dawley male rats were randomized into two groups.On the first day,their right tibias were fractured by three-point bending technique.The study group （n=18） received a single injection of 10 μg/kg iloprost for 5 days,while the control group （n=18） received saline solution in the same way.On the 7th,14th and 28th days following the fracture,six rats were sacrificed and their right legs were harvested in each group.The progression of fracture healing was assessed for each specimen by the scores of radiography （by Lane-Sandhu） and histology （by Huo et al）.Results On the 7th day,the radiographic and histologic scores were equal.On the 14th day radiographic total score was 6 and histologic total score was 23 in the iloprost group,whereas radiographic total score was 11 and histologic total score was 33 in the control group.On the 14th day radiographic and histologic scores were significantly decreased in the iloprost group compared to the control group （P 〈0.05）.On the 28th day radiographic total score was 12 and histologic total score was 37 in the iloprost group,whereas radiographic total score was 15 and histologic total score was 40 in the control group.On the 28th day although there was a decrease in radiographic and histologic scores of the iloprost group acording to control group,it was not statistically significant （P 〉0.05）.Conclusion Iloprost delays fracture healing in early stage in rats.     

Effect of Shenfu on the Expression of Bcl-2 and Bax of Intestinal Mucosal Epithelial Cells after Ischemic Reperfusion in Rats

Objective To study the effect of Shenfu on the expression of bax and bcl-2 in small intestinal mucosal epithelial cells after ischemic reperfusion injury and explore the effect of Shenfu on small intestinal mucosal epithelial cells apoptosis. Methods 36 SD rats were randomized into three groups, each consisting of 12 rats： Sham group （S group）, Ischemic reperfusion group （IR group）, Shenfu group （SF group）, Ischemic reperfusion models were made by ligated the superior menseneric artery for 1 hour followed by 2 hrs reperfusion. Histological mucosal damage in each group was graded according to Chiu＇s score. Immunohistochemistry detected the expression of bax and bcl-2, and obtained the optical density （OD） value using a color image pattern analysis system, and then calculated the ratio of bcl-2/bax. TUNEL method measured apoptotic intestinal mucosal epithelial cells, and calculated the apoptotic index. Results There were edema and epithelial impairment in part of villus and the integral was higher in SF group than S group （P〈0.05）, but lower than IR group （P〈0.01）. Compared IR group with S group and SF group, the average OD value of bcl-2 and bax had significant statistic difference （P〈0.01）, and the average OD value of bcl-2 in SF group was higher than in S group （P〈0.05）, meanwhile bcl-2/bax was significantly lower in IR group than in S group and SF group （P〈0.01）, but that was higher in SF group than in S group （P〈0.05）. Apoptotic index in IR group was significantly higher than that in other two groups （P〈0.01）, and that in SF group was higher than in S group （P〈0.05）. Conclusion Shenfu can enhance the expression of bcl-2, decrease the expression of bax, meanwhile increase the ratio of bcl-2/bax, inhibit small intestinal mucosal epithetlial cells apoptosis, and protect small intestine mucosal epithetlial after ischemic reperfusion.     

Effects of tacrolimus and cyclosporine treatment on metabolic syndrome and cardiovascular risk factors after renal transplantation: a meta-analysis

Background The therapeutic success of renal transplantation has been largely attributable to the development of effective and balanced immunosuppressive treatment regimens.This study provides a meta-analysis of a series of randomized controlled trials that compared the effects of tacrolimus and cyclosporine on metabolic syndrome （MetS） and cardiovascular risk factors after renal transplantation.Methods We searched various electronic databases and bibliographies,including MEDLINE,the Cochrane Central Register of Controlled Trials,and EMBASE,for relevant studies published prior to October 2012.Results Our meta-analysis included five randomized controlled trials that examined a total of 923 patients.The tacrolimus group and the cyclosporine group exhibited no significant differences in MetS incidence after renal transplantation; risk ratio （RR）：1.06,95％ confidence interval （C/）：0.73-1.55,P=0.76.Cyclosporine treatment was associated with a higher incidence of hyperlipidemia （RR：0.50,95％ CI：0.39-0.64,P ＜0.01）.Although there were no statistically significant differences,cyclosporine treatment was associated with a higher incidence of hypertension （RR：0.91,95％ CI：0.83-1.00,P=0.06） after renal transplantation compared to tacrolimus treatment,and tacrolimus treatment was associated with a higher incidence of diabetes after renal transplantation （RR：1.79,95％ CI：0.98-3.27,P=0.06） compared to cyclosporine treatment.Conclusions Compared to tacrolimus treatment,cyclosporine treatment was associated with a higher incidence of hyperlipidemia.Future large-scale studies are expected to be conducted to further confirm our findings.     

慢性肾炎患者的自我调护

慢性肾炎是一种需长期治疗和调养的疾病,良好的自我调护对疾病的治疗和康复有重要意义。这里所谓的调护有环境、情志、饮食和自我护理。1环境房间要定时开窗通风,避免烟雾、尘土等污染空气,以保证房间内空气新鲜。居住房间一般室温为18℃~20℃,湿度为40%~60%,过高或过低的温湿度会让患者有不舒适感或引起感冒,感冒和其他不适感又可能加重患者病情。冬天可采用在地面洒水、用湿毛巾搭在暖气上等方式来增加房间湿度;夏天使用空调时温度调得过低,室内外温差过大,电风扇直接对着患者吹,这些不适当的调节室温的方法极易造成患者感冒而使病情加重;冬天,患者住的房间最好选择在自然光线充足的向阳面,因自然光有杀菌作用,又比较温暖,但光线不宜直接照射到患者的眼部,以免刺激患者眼睛。2情志从中医学理论分析,当一个人的情志失调时,容易伤肝。肝的特性,性喜条达而恶抑郁,若忧虑过度,则肝气郁结,疏汇不利,甚至横逆犯胃,致气机阻滞,或肝气久郁化火,损及肾阴,肝炎郁于下焦,影响膀胱气化功能,使病症缠绵难愈。有些患者得了肾病,情绪波动很大,由于疾病的困扰和家庭、社会地位的变化,常常抑郁寡言,整天愁眉苦脸,不积极配合治疗,增加了治疗难度;还有一部分患者得了肾...     

补肾活血方对PCOS大鼠模型卵巢中PAI-1mRNA表达的影响

目的探讨补肾活血方对大鼠PCOS模型卵巢局部纤溶酶原激活物抑制因子-1（PAI—1mRNA）表达的影响。方法选用未成年24d龄SD雌性大鼠60只,随机分为模型组、克罗米酚组、补肾活血方高剂量组、补肾活血方低剂量组、正常对照组5组。用Bogovich法建立大鼠多囊卵巢病理模型。以克罗米酚为对照。用原位杂交法观察补肾活血方对多囊卵巢大鼠局部PAI—1mRNA的影响。结果模型组卵巢局部PAI—1mRNA存在卵泡膜间质细胞显著增高,用补肾活血方高、低剂量与克罗米酚药后,卵巢局部PAI-1mRNA的表达明显降低．差异具有统计学意义（P〈0．05、P〈0．01）。补肾活血方高剂量组与克罗米酚组比较,差异具有显著统计学意义（P〈0．01）;低荆量组与克罗米酚组比较差异无统计学意义（P〉0．05）,补肾活血方高、低剂量组比较,低剂量组卵泡膜间质细胞上PAI-1的基因表达增高更明显,但二者差异无统计学意义（P〉0．05）。结论PAI-1mRNA可能与多囊卵巢综合征的发病机制有关。以补肾活血立法的补肾活血方能降低多囊卵巢大鼠局部PAI—1mRNA的显著增高表达．降低PAI—1mRNA卵巢局部的作用。提示补肾活血方可能通过PAI—1mRNA途径促进卵巢排卵的机制。     

改良直接注射法在SPECT显像应用的探讨

目的:探讨改良直接注射法在SPECT显像应用的效果。方法:将100例进行SPECT显像的患者,随机分成两组,用传统直接注射法和改良直接注射法注射99mTc-标记化合物。测量医护人员完成操作时间和注射器内放射性残留量。结果:传统直接注射法残留放射性活度明显高于改良直接注射法(P<0.01),而两者操作时间差异无统计学意义(P>0.05)。结论:改良直接注射法能显著减少注射器内放射性显像剂残留,保证SPECT检查质量。     

我国与美国日本对放射技术人才培养模式的比较

由于历史的原因,放射技术形成一门独立且具有比较系统理论的学科,仅有50多年的历史。我国的放射技术随着改革开放有了长足的进步,在高校中已有了培养人才的一席之地。但也不讳言,其水平与发达国家相比还有相当的差距。笔者就我国设有放射技术专业的高校招生状况作过一次调查,并与美国、日本的培养模式作了比较。根据卫生部科技教育司和教育部高等教育司联合下发的题为“关于对中国医学教育改革和发展纲要征求意见的通知”(卫科教规划发[2000]61号文)精神,有下述的思考。1美国和日本的放射技术人才培养模式1.1美国的培养模式根据日本大阪大学医疗技术短期大学的稻本一夫对《美国四年制放射技术教育》调查资料和美国医学物理委员会公布的2001年至2002年的医学物理师任职资格有关资料的分析,美国高校培养的与放射技术人才有关的教育有两种模式。第一种模式是由16所大学设有4年制放射线摄影技术(BS-Rad irgraphy)、4年制核医学技术(BS-Nuc learM ed ic ine)、4年制放射治疗技术(BS-Rad iation Therapy)、4年制超声技术(BS-U ltrasound)、4年制影像诊断技术(BS-D iagnos...     

中医疗法治疗运动性疲劳的研究进展

随着竞技体育的发展，运动员经常承受着大负荷、超强度的体力训练，因此极易产生运动性疲劳。疲劳的出现使肌内压增高，局部缺血，造成氧化代谢、H^＋排出率与pH值降低，血乳酸增高，从而影响肌纤维神经传导速度和肌内收缩力量，减弱了肌肉保护能力。致使较多的冲击力传到骨骼上，故易导致疲劳骨折的发生,严重影响了运动员的训练和比赛成绩，对运动员身心产生不必要的伤害。运动性疲劳消除手段的研究一直是竞技体育工作和运动医学关注和研究的焦点。     

Heparin inhibits burn-induced spleen cell apoptosis by suppressing interleukin-1 expression

Background Epidermal burn injury may trigger significant apoptosis of the spleen cells,which might be caused by a burninduced systemic inflammatory reaction.Heparin has been shown to possess anti-inflammatory properties.Interleukin 1 （IL-1） is centrally important among pro-inflammatory cytokines.We hypothesized that heparin might inhibit burn-induced apoptosis in the spleen via suppression of the IL-1 pathway.Methods Burn injury was performed on IL-1 R＋/＋ （IL-1 receptor wild-type mouse） and IL-1 R-/-（IL-1 receptor knockout mouse） mice,and they were then treated with heparin,saline or IL-1 receptor antagonist IL-Ra.Apoptosis,IL-1α and IL-1β expression were assessed in the spleens and serum.Survival curve analysis was further applied to elucidate the mechanism of heparin＇s protective properties.Results Burn induced significant apoptosis （sham：3.6％±2.1％ vs.burn：28.8％±5.9％; P ＜0.001）and remarkable expression o IL-1α and IL-1β in the mouse spleens and serum.Heparin reduced the burn-induced apoptosis in the spleens （heparin treated：8.6％±3.4％,P ＜0.005）,which could be blocked by IL-1Ra.Heparin markedly decreased both IL-1α and IL-1β expression in the spleens and serum of burned mica.IL-1 R-/-mice demonstrated considerably less apoptosis in the spleens and had a higher survival rate after burns.Heparin did not significantly decrease apoptosis in the spleen and the mortality rate in IL-1 R-/-mice after burns.Conclusion Heparin inhibits burn-induced apoptosis of the spleen cells by suppressing IL-1 expression in mice.     

医院感染监测与控制

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