睫状神经营养因子对应激大鼠体质量的影响及其机制探讨

①目的　探讨睫状神经营养因子 (CNTF)对躯体性和心理性应激大鼠体质量的影响及其与下丘脑促肾上腺皮质素释放激素 (CRH)含量的关系。②方法　建立应激大鼠动物模型 ,应用鼠脑立体定向方法 ,在应激前给予大鼠双侧海马微量注射CNTF ,称量大鼠应激前后的体质量变化 ,并用放射免疫分析法测定大鼠下丘脑CRH含量的变化。③结果　在应激前及应激期间给予双侧海马微量注射CNTF ,可以有效改善应激引起的大鼠体质量的下降 (t=2 .16 3.86 ,P <0 .0 5 ,0 .0 1) ,改善应激引起的下丘脑CRH含量的升高 (t=3.0 5 4.0 3,P <0 .0 1)。④结论　CNTF可以改善应激对大鼠生长的损害 ,其机制可能与CNTF降低应激大鼠下丘脑CRH的含量有关。     

粮食中3种镰刀菌毒素的气相色谱测定法

①目的　建立一种简单、灵敏、高效的测定粮食中雪腐镰刀菌烯醇 (NIV )、脱氧雪腐镰刀菌烯醇(DON)、新茄病镰刀菌烯醇 (NS)的方法。②方法　粮食样品用甲醇 水 (95∶5 ,V∶V)提取 ,经Florisil柱净化 ,用 9∶1的氯仿 甲醇进行洗脱 ,提取液经n 7氟丁酰咪唑衍生后 ,用配有SE 5 4弹性石英毛细管柱的气相色谱进行测定 ,检测器为电子捕获检测器。③结果　建立了粮食中 3种镰刀菌毒素的气相色谱测定方法 ,其最低检测限为 1×10 -11～ 1× 10 -10 g ,各毒素回收率均在 85 %以上。④结论　该方法灵敏、简单、快速、回收率高 ,具有很好的实际应用价值。     

细胞周期调控相关蛋白在子宫内膜癌的表达及意义

目的　探讨与细胞周期G1→S调控点相关的P185 ,rasP2 1,P5 3,P16 ,P2 1,Rb ,nm2 3H1蛋白在子宫内膜癌组织中的表达及意义。②方法　应用免疫组化 (LSAB)法检测上述蛋白在 2 1例正常子宫内膜、19例子宫内膜上皮内瘤样病变 (EIN)及 45例子宫内膜癌中的表达。③结果　P185 ,rasP2 1,P5 3蛋白表达率由正常内膜、EIN至内膜癌逐渐升高 ,P16 ,P2 1,Rb ,nm2 3H1结果相反。在子宫内膜癌中 ,P185与rasP2 1呈正相关 (r=0 .36 3,P <0 .0 5 ) ,与P5 3,P2 1呈负相关 (r=- 0 .44 8,- 0 .30 3,P <0 .0 5 ) ,rasP2 1,P5 3与P2 1均呈负相关 (r=- 0 .36 5 ,- 0 .32 2 ,P <0 .0 5 ) ,P16 ,P2 1与Rb呈正相关 (r=0 .36 1,0 .44 1,P <0 .0 5 )。P185单因素分析为一预后保护性因素 (χ2 =5 .86 ,P <0 .0 5 ) ;P5 3的表达与临床各参数均有关 ,与ER ,PR的表达呈负相关性 ,单因素及多因素分析表明 ,P5 3异常表达均提示预后差 (χ2 =2 1.39,P <0 .0 5 )。④结论　与细胞周期G1→S调控相关的P185 ,rasP2 1,P5 3,P16 ,P2 1,Rb ,nm2 3H1蛋白异常表达均参与子宫内膜癌发生、发展 ,且其中部分基因相互关联 ;P5 3可作为独立预后因素 ,其阳性表达提示预后差。     

影响助生殖技术的因素分析

目的　了解影响助生殖因素。②方法　用助生殖技术对 10 6例不孕妇女进行助孕 ,观察助生殖过程中激素水平对卵泡发育及排卵影响 ,不同获能方法对精子受精率影响 ,同时分析控制性超排卵 (COH)异常反应 卵巢过度刺激综合征 (OHSS)发生、发展相关因素。③结果　COH中 ,高雌二醇、低孕激素水平可促进卵泡发育 (t=1.99～ 6 2 5 .75 ,P <0 .0 0 1,0 .0 5 ) ;体外分离法获能精子活率明显高于上游法 (t=11.40～ 32 .41,P <0 .0 0 1) ;中、重度OHSS组胚胎移植日血清及卵泡液血管内皮生长因子 (VEGF)水平显著高于正常组 (t=4.2 6 ,11.5 1,P <0 .0 1)。④结论　激素水平、精子获能方法及VEGF水平对助生殖可能有影响作用。     

局灶性脑缺血再灌注大鼠IL—1Ra mRNA的表达

目的　观察脑缺血再灌注后白细胞介素 1受体拮抗剂 (IL 1Ra)mRNA的表达。②方法　采用线栓法制备SD大鼠局灶性大脑中动脉阻塞 (MCAO)动物模型 ,应用RT PCR方法观察脑缺血再灌注对大鼠IL 1RamRNA表达的影响。③结果　MCAO模型大鼠缺血侧大脑皮质再灌注后 12 ,2 4h的IL 1RamRNA表达与正常对照组比较明显增加 (F =39.84,q=9.0 3,15 .91,P <0 .0 0 1) ;缺血侧纹状体缺血再灌注后 12h的IL 1RamRNA表达与正常对照组比较明显增加 (F =7.37,q=6 .5 4,P <0 .0 0 1)。④结论　脑缺血后内源性IL 1RamRNA表达增加 ,可能是机体对缺血性损伤的自我保护机制。     

被动吸烟对金黄地鼠致畸作用的研究

目的　采用被动吸烟方法研究香烟烟雾对金黄地鼠胚胎的致畸作用。②方法　应用被动吸烟笼具将不同妊娠时间的金黄地鼠分组进行被动吸烟 ,而后计数每组的胚胎植入数、活胎、吸收胎、死胎、畸胎及畸形数 ,并进行统计学处理。③结果　孕 1～ 6d ,7d ,9d以及 10～ 14d吸收胎加死胎的百分数比对照组略有增加 ,畸胎和畸形数无增加。而孕 8d吸收胎加死胎百分数、畸胎率均比对照组有显著增加 (χ2 =17.2 ,5 1.4,P <0 .0 0 1)。④结论　吸烟对胚胎有致畸作用。     

AO髁支撑钢板在股骨远端骨折治疗中的应用

目的　探讨AO髁支撑钢板治疗A型和C型 (AO分类 )股骨远端骨折的临床效果。②方法　应用AO髁支撑钢板治疗股骨远端骨折 18例 (A型 8例 ,C型 8例 ,AC混合型 2例 )。③结果　术后X线检查示 18例均达解剖复位或近解剖复位 ,固定可靠。 3例膝屈曲 45°受限 ,15例住院期间膝屈曲达 90°以上 (占 83.3% )。 11例获0 .5～ 2 .0年随访骨折均愈合。④结论　AO髁支撑钢板和股骨远端的解剖形态较为匹配 ,治疗A型和C型股骨远端骨折可达坚强内固定。     

Deregulated microRNA-22-3p in patients with sepsis-induced acute kidney injury serves as a new biomarker to predict disease occurrence and 28-day survival outcomes

Background

Acute kidney injury (AKI) is a common and serious complication of sepsis. MicroRNA-22-3p (miR-22-3p) has been found to be involved in septic AKI progression. The purpose of this study was to analyze both the serum and urinary expression of miR-22-3p in septic AKI patients, and evaluated the clinical value of miR-22-3p in the diagnosis and prognosis of sepsis-induced AKI.

Methods

Serum and urinary expression of miR-22-3p was examined using qRT-PCR. The risk factors related with septic AKI onset were assessed using logistic analysis. A receiver-operating characteristic (ROC) curve was constructed to evaluate the diagnostic performance of miR-22-3p, and the Kaplan–Meier survival curves and Cox regression analysis were used to evaluate the predictive value of miR-22-3p for the 28-day survival of septic AKI patients.

Results

Both serum and urinary miR-22-3p expression was decreased and negatively correlated with kidney injury biomarkers in septic AKI patients. MiR-22-3p expression was a risk factor for AKI onset and had diagnostic accuracy in septic AKI patients. The expression of both serum and urinary miR-22-3p was lower in patients who died, and served as a prognostic biomarker to predict 28-day survival in septic AKI patients.

Conclusion

Serum and urinary miR-22-3p was reduced in sepsis-induced AKI patients, and served as a biomarker to predict AKI occurrence and 28-day survival in sepsis patients.

     

Comparison of efficacy and safety of daily oral L-arginine and PDE5Is alone or combination in treating erectile dysfunction: A systematic review and meta-analysis of randomised controlled trials

The meta-analysis was performed to assess the efficacy and safety of daily oral L-arginine and phosphodiesterase type 5 inhibitors (PDE5Is) alone or combination in treating patients with erectile dysfunction (ED). We performed a search of randomised controlled trials in the following databases: PubMed, EMBASE and Cochrane Library databases. Four articles including 373 patients were studied. Erectile functions were significantly improved in three therapy groups compared with baseline. Patients who received the combination of L-arginine and PDE5Is showed significant improvement compared to those treated with L-arginine and PDE5Is alone, as assessed by sexual function index (p <0.00001 and p =0.005, respectively) and total testosterone (p <0.00001 and p =0.0007, respectively). Furthermore, patients who treated with PDE5Is alone exhibited the better efficacy than those treated with L-arginine alone in respects of sexual function index (p <0.00001) and total testosterone (p =0.0001). However, the combination of L-arginine and PDE5Is had no obvious difference relative to PDE5Is alone in terms of various adverse events (AEs). Conclusively, compared with monotherapy, the combination of L-arginine and PDE5Is showed a greater improvement of sexual function and total testosterone, and did not significantly increase the AEs. Besides, PDE5Is alone revealed a better effect than those treated with L-arginine alone for patients with ED.     

Analysis of pharmacological mechanisms of Yinyanghuo as treatment of erectile dysfunction with network pharmacology-based strategy

Erectile dysfunction is considered an important health problem that impacts the quality of life of men. Yinyanghuo, also called Epimedium or Horny Goat Weed, is a frequently used Chinese traditional herbal medicine, commonly used in treating erectile dysfunction in China. A network pharmacology method was performed systematically, at a molecular level, to analyse the pharmacological mechanism of Yinyanghuo as erectile dysfunction therapy. The network pharmacology method used in this study primarily includes prescreening of the active compounds, prediction of targets, network analysis and gene enrichment analysis. This network analysis proved that 4 targets (AR, NR3C2, PDE5A and BMP2) could be the targets of Yinyanghuo therapy on erectile dysfunction. Besides, gene enrichment analysis predicted that Yinyanghuo might have a role in erectile dysfunction by regulating 10 molecular functions, 8 cellular components, 10 biological processes and 36 possible targets related to 10 signalling pathways. Our study demonstrated the molecular and pharmacological mechanisms of Yinyanghuo against erectile dysfunction with a holistic approach and demonstrated a powerful method for analysing pharmacological mechanisms and rational utilisation of Traditional Chinese Medicine clinically.