蝎毒多肽对大鼠纤溶系统的作用

从蝎毒中获取具有多种药理活性的肽类混合物（简称ＳＶＰ），用下肢血管灌流和整体给药的动物模型，观察对血管灌流液内纤溶酶原激活物（ＰＡ）活性、血浆优球蛋白纤溶活性（ＥＦＡ）、纤溶酶（ＰＬ）活性的影响。结果：１～２０μｇ／ｍｌ灌流３ｍｉｎ和０．８，１．６ｍｇ·ｋｇ－１ｉｐＳＶＰ１ｈ血浆中ＰＡ活性与对照组相比明显升高（Ｐ＜０．０５或Ｐ＜０．０１），这可能与血管内皮细胞释放ＰＡ活性增加有关。     

蝎毒素Ⅳ的中枢镇痛作用

从东亚钳蝎粗毒中分离纯化出蝎毒素Ⅳ，经套管注入侧脑室，用辐射热测痛和屈肌反射检测两种方法，观察蝎毒素Ⅳ的中枢镇痛作用，结果蝎毒索Ⅳ可以明显延长大鼠缩腿潜伏期，并可显著抑制Ｃ纤维诱发的屈肌反射。提示蝎毒素Ⅳ具有显著的中枢镇痛作用。     

In vitro biosynthesis of plasma proteins under ischemic conditions of closed-circuit perfusion of healthy and intoxicated rabbit liver

We are elaborating on the kinetics and mechanisms of septic rabbit liver to de novo biosynthesize acute-phase response (APR) proteins under in vitro conditions of deepening ischemia in reference to their in vivo prevalence in serum and cerebrospinal fluids (CSF) collected at predetermined times. The significance of the data is interpreted as relevant to grafting cadaveric liver into end-stage liver diseased patients and APR-induced ischemic heart diseases (IHD). Hepatic APR was induced by CCl(4)-intubation, and the administration of cholera toxin (CT) or scorpion venom (SV), or both, to rabbits. Hepatic functional efficiency, in terms of biosynthesis of APR proteins in closed circuit perfusion of the isolated intoxicated liver with oxygenated saline or L-15 media paralleled the two-dimensional immunoelectrophoresis (2D-IEP) spectrum of APR serum proteins at time of liver isolation. We are suggesting: (a) in vitro biosynthesis of plasma proteins by isolated perfused liver is the result of in vivo decoded and retained APR inflammatory signals; and (b) decoded inflammatory signals are expressed not withstanding the perfusate's organic composition. Furthermore, 90 min of ischemic perfusion in saline or L-15 medium precipitated mitochondrial aberrations which resulted in further deterioration of de novo biosynthesis of APR plasma proteins. Regardless of the nature of the inflammatory stimuli, mitochondrial aberrations rendered the perfused organ a biologically inert tissue mass that was incapable of resuming biological function upon perfusion with oxygenated L-15 medium. This is most likely due to ischemia-induced irreversible hepatic necrosis. Thus, in vitro aberrations of mitochondrial function(s) critically limit the capability of the isolated liver to resume its organic function to sustain biosynthesis of de novo plasma proteins. Extrapolation of these results to the surgical management of end-stage liver diseases points to the importance of the status and the handling protocol(s) of the cadaver donor liver prior to successful grafting. We conclude that although histology of a cadaver liver may reveal well-preserved hepatic cellular organelles with at least minimal intra- and intercellular communication required for viable hepatic function, we deem it essential to further define acceptable minimal capabilities to de novo biosynthesize plasma proteins by a cadaver liver as a measure of its functional viability and suitability for transplantation. Ultimately, this measure may improve the success of liver transplants with minimal surgical and drug interventions.     

蝎毒抗癌多肽对CNE-2Z细胞生长周期移行和p53表达的影响

目的 :观察蝎毒抗癌多肽 (APBMV)对CNE 2Z细胞生长周期和p5 3表达的影响。方法 :采用流式细胞仪双标法。结果 :APBMV处理CNE 2Z细胞 48h后 ,进入S期的细胞明显减少 ,处于G1期和G2期的细胞明显增多 ,APBMV 16mg/L处理CNE 2Z细胞 48h后 ,G1期、S期和G2期细胞的百分比分别为 5 9.7%、32 .3 %和 7.9% ,空白对照组的百分比分别为 5 3 .3%、45 .2 %和 1.5 % ,二者比较差异有显著性 (P <0 .0 1或P <0 .0 0 1)。空白对照组CNE 2Z细胞P5 3蛋白 2 4h和 48h表达量处于较高水平 (2 7.2 3± 0 .93)和 (31.6 7± 1.75 ) ,经APBMV处理 2 4h或 48h后 ,P5 3蛋白表达量明显下降 ,与空白对照组相比差异有显著性 (P <0 .0 1)。结论 :APBMV能够阻止CNE 2Z细胞周期的移行 ,并抑制抑癌基因p5 3的表达     

蝎毒抗癌多肽对H22带瘤小鼠放疗后脂质过氧化的影响

目的 :观察蝎毒抗癌多肽 (APBMV)与放疗 (RT)合用对H2 2 带瘤小鼠脂质过氧化的影响。方法 :取H2 2 带瘤小鼠 10 0只 ,观察不同剂量APBMV与放疗合用后肿瘤生长抑制率 (IR)、血清SOD活力和LPO含量的变化。结果 :放疗后第 6d和第 9d ,RT与APBMV合用后瘤重明显降低 ,IR最高达 78.2 8%和 70 .45 % ,高于单用RT组和APBMV组 (P <0 .0 5或P <0 .0 1) ;RT组SOD活力最低 ,LPO含量最高 (与对照组比较 ,P <0 .0 5 ) ,RT +APBMV高剂量组SOD活力明显提高 ,LPO含量显著降低 (与RT组比较 ,P <0 .0 1) ,接近空白对照水平。结论 :APBMV与放疗合用对H2 2 的抑制作用比单纯放疗和单用APBMV增强 ,APBMV可减轻辐射所致的脂质过氧化损伤     

东亚钳蝎蝎毒的指纹图谱

目的 :探索东亚钳蝎蝎毒 (scorpionofButhusmartensiivenom)的分析及鉴定方法 ,建立相关质量标准。方法 :采用高效液相色谱法 (highperformanceliquidchromatography ,HPLC)分析检测 8个蝎毒样品。结果 :蝎毒可分离出40多个组分 ,实验所使用的 8个省内所产蝎毒具有非常相似的图谱。蝎淋巴液和 3种蛇毒与蝎毒图谱有显著不同。同一样品 (二次冻干粉 )连续测定 5次进样量的精密度、重现性均达到有关规定。结论 :采用HPLC法获得了蝎毒的指纹图谱 ,并测定了可影响蝎毒质量的蝎淋巴液和可能用于掺伪的 3种蛇毒的图谱。本研究为蝎毒及其制剂的进一步开发应用提供了有价值的实验依据。     

蝎毒抗癌多肽及其分离组分分析及鉴定方法

目的 :探讨蝎毒抗癌多肽 (antineoplasticpolypeptidefromButhusmartensiivenom ,APBMV)及其分离组分的分析及鉴定方法。方法 :采用SepharoseFF阳离子交换凝胶柱 (2 5cm× 5cm交换柱 ,流速 0 .8ml/min ,梯度洗脱 12 0 0min)层析法分离APBMV ,用高效毛细管电泳 (highperformancecapillaryelectrophoresis,HPCE)及高效液相色谱法 (highperformanceliquidchromatography ,HPLC)分析检测。结果 :用SepharoseFF阳离子交换凝胶层析可将APBMV分离为 2个峰。经HPCE、HPLC分析显示 ,APBMV主要成分为峰Ⅰ～Ⅳ ,其分离组分分别以峰Ⅰ或峰Ⅲ为主 ,其纯度分别为86 .35 %、6 9.5 7%。结论 :SepharoseFF用于进一步分离APBMV可望获得较高纯度的单一有效成分 ,HPCE及HPLC均可较好地显示蝎毒中小分子多肽的组成及相对含量 ,其结果基本一致     

蝎毒抗癌多肽组分Ⅲ的分离方法研究

目的：探索蝎毒抗癌多肽组分Ⅲ(antineoplastic polypeptide-Ⅲfrom APBMV,AP-Ⅲ)的分离和纯化方法。方法：蝎毒经预处理后,分别采用pharose FF阳离子交换凝胶柱(cm×5 cm交换柱,流速0．8 ml／min,梯度洗脱1 200 min)层析法和Sepharose FF阳离子交换凝胶柱与Sephadex G-50凝胶柱(柱：100cm×5 cm;流速：0．5 ml／min)联合层析法,分离AP-Ⅲ,用HPLC仪检测2种方法分离出的AP-Ⅲ的纯度及产率。结果：单独用Sepharose FF阳离子交换凝胶柱分离,AP-Ⅲ产率为2．24％,纯度为89％。Sephadex G-50凝胶柱与Sepharose FF阳离子交换凝胶柱联用,其产率及纯度分别提高至4．72％和％。结论：Sephadex G-50与Sepharose FF联用可提高AP-Ⅲ的产率及纯度,从而为开发和利用AP-Ⅲ提供了实验依据。     

鲜品炮制全蝎与市售全蝎药材宏量和微量元素含量的比较研究

目的:探讨全蝎鲜品炮制与市售全蝎药材中宏量与微量元素含量的差异,阐明全蝎鲜品炮制的科学性.方法:采用发射光谱法测定鲜品炮制的全蝎和市售全蝎药材的宏量元素Ca、Mg及微量元素Fe、Cu、Zn、Mn、Pb等7种元素的含量.结果:鲜品炮制组全蝎宏量元素Ca、Mg含量明显低于市售全蝎药材组(P＜0.01),微量元素Cu、Mn含量明显高于市售药材组(P＜0.05、P＜0.01),而有毒微量元素Pb则明显低于市售药材组(P＜0.01);但鲜品组与市售药材组微量元素Fe、Zn含量无明显差异(P＞0.05).结论:全蝎鲜品炮制可提高全蝎药材中有益元素Cu、Mn含量,降低有毒元素Pb的含量,说明全蝎鲜品炮制有一定的科学性.