猕猴桃中药复方制剂对血清SOD及MDA含量的影响

猕猴桃中药复方制剂系采用猕猴桃汁为基质，配加绞股蓝、丹参等中药的有效成分制成。为了研究它的保健作用，在６３例５０岁以上、无急性疾病的中、老年人，３６例３０～４９岁健康的青年，３２例１４～１７岁健康的少年中进行试验，１０ｍｌ每日２次连续服用３０天后，中老年人血液ＳＯＤ显著增高，７０岁以上老人平均增高２．８倍，血清ＭＤＡ明显下降，７０岁以上平均下降８７．５％。     

1%线状透明颤菌面霜在中国女性敏感性皮肤的功效与耐受性评价

目的评价温泉浮游生物纯提取物(pureextractthermalplankton,PETP)即线状透明颤菌(Vitreoscillafiliformis,VF)提取物用于中国女性敏感性皮肤的功效与耐受性。方法经临床检查和乳酸刺激实验筛选出伴有敏感性皮肤的健康女性36例。早晚清洁面部后,均匀涂抹1%VF面霜,每日2次,连续使用3周。分别于实验前后由同一个皮肤科医师观察受试者的皮肤乳酸刺激分数,以及皮肤的临床表现(干燥、红斑、鳞屑、弹性、光滑度)。同时,检测皮肤颜色及皮肤角质层水合度等皮肤生物学参数。结果受试者的乳酸刺激分数显著降低,使用前后差异显著(P<0.0001)。干燥、红斑、鳞屑、光滑度均有不同程度改善。受试者对VF面霜耐受良好。结论伴有敏感性皮肤的中国女性,在皮肤日常护理中,使用含有VF提取物的护肤品有助于改善皮肤的敏感状态和皮肤保健。     

油茶肉质果和肉质叶开发价值及食用安全性分析

研究了油茶肉质果和肉质叶营养成分及食用安全性。成熟的肉质果（叶）各成分质量分数分别为：水分91．36％（91．58％）、蛋白质7．81％（6．56％）、脂肪3．7％（2．90％）、还原糖30．41％（21．83％）、总糖37．23％（29．28％）、茶皂素2．44％（1．46％）、灰分3．45％。（4．55％）、酸度0．35％（0．46％）。测定的矿物元素中，肉质叶、果的钙含量分别为411．3mg、359mg；锰的含量分别为31．35mg和33．06mg；含有16种氨基酸；所测的6种维生素中，维生素C和叶酸含量较高。毒性试验结果显示，样品为无毒野生果。微核试验和致畸试验结果表明：小鼠微核率与对照组比较，差异不显著（P〉0．05）。小鼠精子致畸率与阳性对照组比较无显著差异（P〉0．05）。样品对金黄色葡萄球菌抑制效果明显。该野生果基本无毒、无致突变物质，证明油茶肉质果、肉质叶是一种食用安全的野生果和食品资源。     

Inhibition of IgE formation in mice by glycoproteins from corn silk

The inhibitory effects of glycoproteins separated from a hot water extract of corn silk (U-CSE) on the formation of IgE antibodies after primarily and secondarily challenged responses with dinitrophenyl (DNP)-ovalbumin (OVA) antigen in mice were investigated using the passive cutaneous anaphylaxis (PCA) test. When U-CSE was given intranasally or intraperitoneally the day before primary immunization, IgE antibody production was strongly inhibited. Furthermore, it was found that new formation of IgE antibodies was readily inhibited by U-CSE administration in mice with high levels of IgE after primary immunization. It was also found that U-CSE markedly suppressed IgE antibody formation in secondarily challenged responses with the antigen. U-CSE may be clinically applicable to type I allergic diseases.     

粉被虫草提取物对巨噬细胞吞噬功能及CTL活性的影响

研究粉被虫草菌丝体提取物在体外对小鼠腹腔巨噬细胞吞噬功能和脾细胞免疫功能的影响，结果表明：粉被虫草提取物在正常情况下不仅能够促进小鼠腹腔巨噬细胞的吞噬功能，而在免疫抑制的情况下，一定浓度的粉被虫草菌丝体提取物还能恢复提高吞噬功能；它不仅能促进正常脾活化Ｔ细胞的增殖，而且能恢复环磷酰胺和氢化可的松抑制免疫小鼠脾活化Ｔ细胞的增殖；在较高浓度下能增高小鼠脾细胞毒Ｔ淋巴细胞（ＣＴＬ）活性，同时在一定浓度下能恢复免疫抑制小鼠脾ＣＴＬ活性。     

龙眼参提取物对耐药口腔上皮样癌细胞株KB／MIT及耐药乳腺癌细胞株MCF-7／ADR的逆转作用

目的：研究龙眼参提取物XCKB／MIT细胞及MCF-7／ADR细胞株的耐药逆转作用。方法：设计4个不同浓度的龙眼参提取物组，采用MTT方法．测定体外培养的阿霉素敏感株MCF-7及其耐药株MCF-7／ADR以及米托蒽醌敏感株KB及其耐药株KB／MIT的IC50。结果：MCF-7／ADR耐药株及KB／MIT耐药株在龙眼参提取物与阿霉素或米托蒽醌的联合用药中其IC50值分别接近于单独用约于敏感株MCF-7和KB的水平．而与单独用药于耐药株其IC50有显著性差异。结论：龙眼参提取物可以逆转MCF7／ADR和KB／MIT的耐药性。     

苏乐康等抑制细胞转化能力及其机制的探讨

研究了苏乐康、绿茶提取物对~(60)钴γ射线和雌性激素联合诱发叙利亚金黄地鼠胚胎细胞恶性转化的抑制能力,并用脉冲辐解技术,对其抑制机制进行初步探讨。实验结果表明,苏乐康、绿茶提取物对γ射线和雌性激素联合诱发的金黄地鼠胚胎细胞恶性转化的抑制率分别为70.15％(P<0.05)和81.59％(P<0.05),它们的这种抑制能力与其清除超氧阴离子的能力有关,     

Ginkgo biloba Extract (EGb 761) Pretreatment Limits Free Radical Oxidative Stress in Patients Undergoing Coronary Bypass Surgery

A growing body of evidence supports the trigger role of free radicals in the delayed functional and metabolic myocardial recovery following cardiopulmonary bypass (CPB) in humans, thus opening the field to specific therapies. This clinical study was designed to evaluate, in 15 patients undergoing aortic valve replacement, whether the extent of CPB- and reperfusion-induced lipid peroxidation, ascorbate depletion, tissue necrosis, and cardiac dysfunction is reduced by orally administered EGb 761, a Ginkgo biloba extract withpotent in vitro antiradical properties. Patients received either EGb 761 (Tanakan, 320 mg/day, n = 8) or a matching placebo (n = 7) for 5 days before surgical intervention. Plasma samples were obtained from the peripheral circulation and the coronary sinus at crucial stages of the operation (i.e., before incision, during ischemia, and within the first 30 minutes post-unclamping), and up to 8 days postoperatively. Upon aortic unclamping, EGb 761 inhibited the transcardiac release of thiobarbituric acid species (p ` 0.05), as assessed by high-performance liquid chromatography, and attenuated the early (5–10 minute) decrease in dimethylsulfoxide/ascorbyl free radical levels, an electron spin resonance index of the plasma ascorbate pool (p ` 0.05). EGb 761 also significantly reduced the more delayed leakage of myoglobin (p = 0.007) and had an almost significant effect on ventricular myosin leakage (p = 0.053, 6 days postoperatively). The clinical outcome of recovery of treated patients was improved, but not significantly, compared with untreated patients. Our results demonstrate the usefulness of adjuvant EGb 761 therapy in limiting oxidative stress in cardiovascular surgery and suggest the possible role of highly bioavailable terpene constituents of the drug.     

银杏叶提取物活血通络作用的药效学研究

目的：观察银杏叶提取物(EGb)的活血通络功效。方法：小鼠耳廓微循环实验、胶原蛋白-肾上腺素诱导的小鼠体内血栓形成实验、大鼠血液流变学实验及离体兔耳灌流实验。结果：银杏叶提取物经口给药．能显著改善小鼠耳廓微循环，抑制胶原蛋白-肾上腺素诱导的小鼠体内血栓形成，降低大鼠血液粘度，并能显著扩张离体兔耳血管。结论：银杏叶提取物有显著的活血化瘀功效。     

焦痂提取液中丙二醛含量对线粒体呼吸及内膜能化作用的影响

大鼠背部20％光辐射Ⅲ度烧伤7天后的焦痂提取液及1:4、1:8稀释液能对正常大鼠肝线粒体呼吸产生明显的抑制作用,相同方法制成的正常皮提取液只呈轻度抑制,1:4稀释液已无抑制作用,两者丙二醛含量相差悬殊,丙二醛含量与抑制率呈相关,但进一步分析表明这种相关为共存现象,丙二醛含量增高不是呼吸率下降的直接原因。丙二醛增高与膜脂双层的破坏有关,内膜能化作用实验表明,当膜脂受到一定程度破坏时,能化作用受到抑制。然而在能化作用未表现异常时,呼吸率已呈一定程度抑制,故呼吸率抑制还受到提取液其他组分的影响。