红花组分HSYA对人胃腺癌BGC-823移植瘤裸鼠VEGF蛋白、KDR与缺氧诱导因子表达的影响

目的:研究红花组分羟基红花黄色素A(HSYA)对人胃腺癌皮下移植瘤裸鼠血管内皮生长因子(VEGF)蛋白、含激酶插入区受体(KDR)和缺氧诱导因子(HIF-1α)mRNA与蛋白表达的影响。方法:采用BALB/C nu/nu裸小鼠接种人胃腺癌细胞株BGC-823于右前肢腋部皮下建立裸鼠人癌移植瘤模型,随机分为模型组、对照组、HSYA高、低剂量组(0.056g/L、0.028g/L),观察抑瘤作用,酶联免疫吸附测定(ELISA)法检测瘤组织VEGF与HIF-1α蛋白以及血清VEGF蛋白表达;蛋白印迹(Western blotting)法测定瘤组织KDR磷酸化蛋白的表达;实时荧光定量PCR(RTFQ-PCR)法检测瘤组织KDR及HIF-1αmRNA表达。结果:HSYA低剂量组抑瘤明显,该组瘤组织及血清VEGF蛋白表达降低,瘤组织KDR磷酸化蛋白表达减弱,与模型组比较差异明显(P0.05,P0.01);HIF-1α蛋白表达较模型组瘤组织明显减少(P0.01)。KDR mRNA表达与模型组相比减弱,差异有统计学意义(P0.05)。结论:一定浓度的HSYA抑制肿瘤生长的可能机制与抑制VEGF、HIF-1α蛋白的表达,减弱KDR蛋白磷酸化及其基因表达,从而抑制内皮细胞活化阻碍肿瘤血管新生以及降低肿瘤缺氧微环境对血管生成的诱导有关。     

黄柏及其酒和盐炙品改善热证大鼠能量代谢及其机制的研究

目的探索黄柏、酒黄柏及盐黄柏对热证大鼠能量代谢的作用规律。方法黄柏及其酒和盐炙品水煎液9.519、1.058g/kg ig大鼠7 d,测定生制黄柏对2,4-二硝基苯酚所致热证大鼠肛温,以及血浆中三碘甲腺原氨酸（T3）、四碘甲腺原氨酸（T4）、促甲状腺激素（TSH）、促甲状腺激素释放激素（TRH）、肝组织中乳酸脱氢酶（LDH）、琥珀酸脱氢酶（SDH）、肝糖原、Na^＋-K^＋-ATP酶和Ca^2＋-Mg2＋-ATP酶的含量。结果生黄柏、盐黄柏均可以降低热证大鼠肛温,而酒黄柏的作用不明显。生黄柏、盐黄柏可以有效降低热证大鼠的血浆中甲状腺功能轴（T3、T4、TSH、TRH）和肝组织中LDH、SDH、Na^＋-K^＋-ATP酶、Ca^2＋-Mg2＋-ATP酶的含量,并能增加热证大鼠肝组织中糖原含量,而酒炙后对能量代谢指标含量作用减弱。结论生黄柏能够改善热证大鼠的能量代谢,且与甲状腺途径有关。盐炙后寒性增强,对热证大鼠的能量代谢有进一步的改善作用,而酒炙后,缓和黄柏的寒性,对能量代谢改善效果不显著。     

尿液中羟基红花黄色素A的含量测定

目的:建立高效液相色谱法用于测定人尿液中羟基红花黄色素A的含量。方法:采用乙腈∶0.2%磷酸水溶液(20∶80 v/v)为流动相,流速为1 mL/min,检测波长为400 nm。结果:羟基红花黄色素A的线性范围为0.58～57.69μg/mL,羟基红花黄色素A在尿中3个浓度的绝对回收率分别平均为100.3%、100.8%、100.9%。结论:本方法简单快速,准确灵敏,重现性好,适用于羟基红花黄色素A的尿中药物浓度测定。     

黄磷染毒对小鼠肝脏HSP70表达及NO的影响

[目的]观察黄磷染毒对小鼠HSP70表达及NO的影响，以探讨黄磷的毒作用机制，寻求黄磷中毒早期健康效应的生物标志物。[方法]通过对小鼠黄磷急性和亚急性毒理实验，应用生物化学和分子生物学的技术，选取176只健康雄性昆明种小鼠，体重18—22g，检测黄磷染毒对HSP70、一氧化氮(NO)、一氧化氮合酶(NOS)等指标的影响。染毒时，急性剂量．效应关系研究取小鼠32只，随机分成4组，低、中、高剂量组的染磷量分别为3、6、9mg／kg体重、对照组给予等量的花生油，腹腔注射染毒48h。时间--效应关系研究取小鼠64只，随机分成8组，实验组以9mg／kg体重的剂量一次性腹腔注射染毒，分别于染毒O、12、24、48h后断头处死小鼠，各组配以相应的对照组。亚急性毒理实验取小鼠80只，随机分成以下10组：O、1、2、3、4周时问组，以1．5mg／kg体重的剂量隔日腹腔注射染毒，每组配以相应的对照组。[结果]随染磷剂量的增高和染磷时间的延长，小鼠肝匀浆HSP70的表达也逐渐升高，急性染磷的HSP70表达升高比亚急性染磷明显；小鼠肝匀浆NOS活性和NO含量逐渐升高，并呈现良好的剂量--反应关系和时间--效应关系。[结论]在黄磷染毒过程中，HSP70对细胞起着很重要的保护作用。提示NOS和NO有可能作为黄磷中毒早期健康效应的生物标志物。     

Box-behnken响应面法优化紫红生肌软膏的醇提工艺

目的 优选紫红生肌软膏的醇提工艺参数,为紫红生肌软膏的新药开发提供依据.方法 以栀子苷、连翘酯苷A、羟基红花黄色素A为评价指标,在单因素试验的基础上,以乙醇浓度、加醇量、提取时间为考察因素,采用Box-behnken响应面法设计试验,采用层次分析法-熵权法组合赋权确定各指标权重系数并计算综合评分,从而优化紫红生肌软膏醇...     

氪黄激光治疗中心性浆液性脉络膜视网膜病变疗效观察

目的观察氪黄激光治疗中心性浆液性脉络膜视网膜病变(central serous chorioretinopathy,CSC)的临床疗效。方法临床确诊的CSC患者55例(60只眼),其中31例(34只眼)接受氪黄激光光凝治疗(激光组),24例(26只眼)接受药物治疗(对照组),观察治疗后患者的视力、眼底、荧光血管造影及病程变化。结果激光组1周内治愈者11只眼,2周内治愈者13只眼,1月内治愈者10只眼,平均疗程2.1周,2只眼复发(占5.88%)。对照组1月内治愈者2只眼,3月内治愈者14只眼,半年内治愈者6只眼,半年至1年内治愈者4只眼,平均疗程5.11月,6只眼复发(占23.08%)。两组在病程与复发上差异有显著意义(P<0.01)。结论氪黄激光治疗CSC安全、有效。     

羟基红花黄色素A对卵巢癌细胞PI3K/Akt信号通路的影响

目的研究羟基红花黄色素A(HSYA)对人顺铂耐药的卵巢癌A2780/DDP细胞株顺铂耐药性的逆转作用及具体机制。方法培养A2780/DDP细胞,接种至20只BALB/C雌性裸鼠,按随机数字表法分为对照组、红花组、顺铂组和联合组,每组5只,均采用腹腔注射给药的方式,对照组予0.9%氯化钠溶液,顺铂组按3mg/kg剂量给予顺铂,红花组按1.1g/kg给予HSYA,联合组予HSYA(1.1g/kg)联合顺铂(3mg/kg),每3天给药1次,连续给药4周。第5周后处死小鼠,解剖取瘤记录瘤重并计算抑瘤率,HE染色观察各组肿瘤的病理改变,Western blot检测Akt、p-Akt蛋白表达。结果对照组瘤重(4.71±0.17)g,顺铂组瘤重(3.53±0.28)g,抑瘤率25.08%,红花组瘤重(4.54±0.25)g,抑瘤率3.61%,联合组瘤重(2.76±0.17)g,抑瘤率41.36%。与对照组和顺铂组相比,联合组的肿瘤质量下降(P0.05),抑瘤率明显增加(P0.05);HE染色显示,与顺铂组比较联合组肿瘤坏死程度更高;Western blot结果示,对照组Akt蛋白相对表达水平为(0.61±0.11),顺铂组为(0.62±0.09),红花组为(0.42±0.10),联合组为(0.44±0.07)。与对照组比较,顺铂组Akt、p-Akt蛋白表达无统计学差异(P0.05),与对照组与顺铂组比较,红花组与联合组的Akt、p-Akt蛋白表达较低,差异有统计学意义(P0.05)。结论 HSYA可能通过下调PI3K/AKT通路的关键组分Akt、p-Akt蛋白,来增强A2780/DDP对顺铂的化疗敏感性,逆转顺铂耐药。     

Effects of Danhong Injection(丹红注射液) and Its Main Components on Anticoagulation and Fibrinolysis in Cultured Vein Endothelial Cells

Objective: To observe the effects of Danhong Injection(丹红注射液) and its main components, including daiclzein and hydroxysafflor yellow A(HSYA), on the anticoagulation, fibrinolysis, anti-apoptosis in hypoxia model of vein endothelial cells(VECs). Methods: VECs were prepared and were put in a hypoxia environment, which consisted of mixed gas of 95% N_2 and 5% CO_2 mixed gas, when reached confluent culture. Five groups used different treatments, including normal control group, hypoxia group, daiclzein group, HSYA group and Danhong Injection group. The VECs were identified by fluorescence double labeling methods. The morphology was observed by a phase contrast microscopy. The effects of Danhong Injection, daiclzein and HSYA on 6 keto prostaglandin F1α(6-keto-PGF1α) level was measured by the method of radioimmunoassay(RIA). Superoxide dismutase(SOD) activity was tested by water soluble tetrazolium salt. The content of malondialdehyde(MDA) was measured by thiobarbituric acid. The activities of tissue-type plasminogen activator(t-PA) and plasminogen activator inhibitor(PAI) were measured by the method of chromogenic substrate. The contents of endothelin(ET) and nitric oxide(NO) were detected by non-equilibrium RIA and enzymelinked immunosorbent assay. Cells apoptosis rate was determined by flow cytometry. Results: Compared with the normal control group, the floating cells number, PAI activity, ET and MDA contents, and cells apoptosis rate in the culture solution of hypoxia group were all significantly increased, whereas the 6-keto-PGF1α and NO contents, and t-PA and SOD activities were decreased significantly(P0.01). Compared with the hypoxia group, Danhong Injection markedly increased the 6-keto-PGF1α content and SOD activity, regulated PAI and t-PA activities, ET and NO contents, and decreased MDA content and cells apoptosis rate(P0.05 or P0.01). Conclusions: Danhong Injection and its main components played an important role in protecting primary VECs from hypoxic damage by regulating the secretion and vasomotor function of VECs. The function of Danhong Injection was most remarkable.     

Paternal effects on offspring fitness in a multimale primate society

When females mate with multiple males, paternal care is generally expected to be negligible, because it may be difficult or impossible for males to discriminate their own offspring from those of other males, and because engaging in paternal care may reduce male mating opportunities. Consequently, males in multimale societies are not predicted to provide direct benefits to their offspring. We have recently demonstrated, however, that males in a typical multimale primate society (yellow baboons, Papio cynocephalus) discriminate their own offspring from those of other males and provide care to them in the form of repeated support during agonistic encounters. This observation raises the question of whether fathers enhance offspring fitness in this species. Here we use 30 years of data on age at maturity for 118 yellow baboons with known fathers. We show that the father's presence in the offspring's social group during the offspring's immature period accelerated the timing of physiological maturation in daughters. Sons also experienced accelerated maturation if their father was present during their immature period, but only if the father was high ranking at the time of their birth. Because age at reproductive maturity has a large impact on lifetime reproductive success, our results indicate a direct effect of paternal presence on offspring fitness. This relationship in turn suggests that the multiple roles that males play in multimale animal societies have not been sufficiently examined or appreciated and that paternal effects may be more pervasive than previously appreciated.