Olive oil,other dietary fats,and the risk of breast cancer (Italy)

Data from a multicenter case-control study on breast cancer conducted in Italy have been used to analyze the relationship of olive oil and other dietary fats to breast cancer risk. Cases were 2,564 women hospitalized with histologically confirmed, incident breast cancer. Controls were 2,588 women admitted to the same network of hospitals for acute, non-neoplastic, non-hormone related, on-digestive tract disorders. Cases and controls were interviewed between 1991 and 1994 using a validated food-frequency questionnaire. The data were modelled through multiple logistic regression controlling for demographic and reproductive breast-cancer risk factors, energy intake and, mutually, for types of dietary fat. For olive oil, compared with the lowest quintile, the odds ratios (OR) were 1.05, 0.99, 0.93, and 0.87 for increasing quintiles of intake; in a model postulating linear logit increase, the OR per unit (30g) was 0.89 (95 percent confidence interval [CI]=0.81–0.99, P=0.03). Among other oils or fats considered, the OR for the highest level of intake was 0.72 (CI=0.6–0.9) for a group of specific seed oils (including safflower, maize, peanut, and soya) compared with nonusers. The ORs for the highest cf lowest level of intake were 0.80 for mixed or unspecified seed oils, 0.95 for butter, and 0.96 for margarine. The study, based on a large dataset from various Italian regions, shows an inverse relationship of breast cancer risk with intake of olive oil and other vegetable oils, but not with butter or margarine.     

中国林蛙卵油和卵渣中微量元素的测定

目的：为中国林蛙油和卵渣应用提供科学依据。方法：采用等离子光谱和分光光度计法测定中国林蛙卵油和卵渣中的微量元素。结果：卵油和卵渣中均含 Ｚｎ, Ｍ ｎ, Ｃｕ, Ｆｅ 等 ９ 种人体必需微量元素,且 Ｚｎ／ Ｃｕ 比值较小。结论：卵油可能具有抗衰老及防治冠心病和高血压等作用。     

烹调油烟对大鼠肺细胞的DNA损伤机制

目的：以大鼠肺Ⅱ型细胞为靶细胞,检测烹调油烟的细胞毒作用和对细胞ＤＮＡ的损伤。方法：烹调油烟颗粒提取物对大鼠肺Ⅱ型细胞染毒２４ｈ后,应用ＭＴＴ法、溴乙锭荧光法以及单细胞凝胶电泳技术检测烹调油烟对大鼠肺Ⅱ型细胞的细胞毒性和ＤＮＡ的损伤。结果：在受试剂量范围内,烹调油烟颗粒提取物具有细胞毒性,可致ＤＮＡ交联及断裂的作用随染毒剂量的增加而增强,并存在剂量－反应关系（ｒ细胞毒性＝－０．９４８,Ｐ＜０．０１;ｒ交联＝０．９７６,Ｐ＜０．０１;ｒ断裂＝０．９５７,Ｐ＜０．０１）。结论：烹调油烟颗粒提取物对大鼠肺Ⅱ型细胞具有细胞毒性作用和ＤＮＡ损伤作用,可使ＤＮＡ链间交联和ＤＮＡ单链断裂。     

SO_4~(2-)/ZrO_2在重油催化裂化中的应用研究

对 Ｓ Ｏ２－４ ／ Ｚｒ Ｏ２ 超强酸体系作为重油催化裂化助剂进行了研究。结果表明,加入适量的 Ｓ Ｏ２－４ ／ Ｚｒ Ｏ２ 可提高轻质油收率,并能降低催化剂生焦;在工业催化裂化高温水蒸汽流化的条件下, Ｓ Ｏ２－４ ／ Ｚｒ Ｏ２ 超强酸体系中的 Ｂ 酸对重油催化裂化起着至关重要的作用。     

川芎茶调散及其4种改型制剂的质量分析

目的：考察川芎茶调散改型制剂的质量,分析影响质量的工艺因素。方法：按中国药典检测方法对各制剂所含挥发油及浸出物进行定量分析,并用ＴＬＣ法对各制剂进行川芎、白芷的主成分鉴别。结果：挥发油含量最高为０．４％（散剂、片剂）,最低为０．０８５％（袋泡剂）;醇溶性浸出物最高为１５．７６％（散剂）,最低为１０．２３％（冲剂）;水溶性浸出物最高为２４．８９％（散剂）,最低为１８．４３％（袋泡剂）;袋泡剂中川芎、白芷的ＴＬＣ鉴别为阴性。结论：与散剂相比,４种改型制剂均存在不同程度的质量问题,其中冲剂、袋泡剂各项指标最低,提示单纯以水提取的剂改工艺欠合理     

蓖麻油餐用于晚期妊娠引产118例分析

目的：观察蓖麻油餐用于晚期妊娠引产的疗效。方法：随机选择１１８例服用蓖麻油餐引产与同期１０６例催产素引产作对照,观察引产效果、产程、产后出血及新生儿评分。结果：观察组引产效率明显高于对照组（Ｐ＜００５）,剖宫产率明显低于对照组（Ｐ＜００５）,两组的产后出血和新生儿阿氏评分无显著性差异（Ｐ＞００５）。结论：蓖麻油引产优于催产素引产。     

New oily agents for targeting chemoembolization for hepatocellular carcinoma

PURPOSE: The evaluation of new oily agents for targeting chemoembolization for hepatocellular carcinoma. METHODS: Five types of oily preparation were injected into the hepatic artery of 54 rabbits inoculated with VX2 carcinoma cells in order to evaluate (1) the safety of these preparations, (2) their histologic distribution and the amount of agents remaining at tumor sites, and (3) computed tomographic (CT) images obtained. Of these preparations, three were made by mixing non-iodinated poppy seed oil and a thickener and then adjusted to have a viscosity lower than, equal to, or higher than that of lipiodol. A fourth preparation was a mixture of lipiodol and a thickener with a higher viscosity than lipiodol alone, and the fifth preparation was lipiodol alone. RESULTS: (1) No injury to the hepatic parenchyma was observed hematologically or histologically. (2) With increase in the viscosity, a significantly larger amount of agent remained at the tumor site. No agent was present at normal sites 14 days after intraarterial injection, regardless of which preparation was given. (3) On CT scans following intraarterial injection, tumor cells were visibly deeply stained in the non-iodinated preparation groups, while the lipiodol groups were not evaluable because of excessively high attenuation. CONCLUSION: The non-iodinated oily preparations and highly viscous oily preparations developed in the present study were more useful than lipiodol for treatment of hepatic tumors.     

烹调油烟对大鼠睾丸毒性的影响

作者探讨了烹调油烟（ Ｃ Ｏ Ｆ）对雄性大鼠生殖性损伤的毒作用机制。按时相（２０、４０、６０天）给雄性 Ｓ Ｄ 大鼠吸入同一浓度（３６～５３ ｍ ｇ／ｍ ３ ）的 Ｃ Ｏ Ｆ,观察 Ｃ Ｏ Ｆ对睾丸及其微量元素的影响。结果表明,吸入 Ｃ Ｏ Ｆ４０、６０天时大鼠体重均有降低趋势;睾丸、附睾脏器及其与体重的比值均分别低于对照组（ Ｐ＜ ００５）,且呈时 效关系;染毒４０、６０天时精子含量和存活率显著降低,而畸形率明显增高,且死精子多;染毒４０、６０天时睾丸中 Ｚｎ、 Ｍｎ 代谢紊乱,出现 Ｚｎ 低, Ｍｎ 高,均呈时 效关系。提示, Ｃ Ｏ Ｆ对性腺具有明显毒性,同时微量元素代谢紊乱可能对性腺的损害起了重要作用。     

烹调油烟引发大鼠肺脂质过氧化及其对巨噬细胞膜的损伤作用

给大鼠吸入烹调油烟,观察对ＡＭ膜和肺组织细胞的损伤作用以及对肺脂质过氧化作用。结果表明：烹调油烟可以造成大鼠ＡＭ膜流动性明显降低,ＢＡＬＦ中ＬＤＨ、ＡＣＰ和ＡＫＰ不同程度的增加以及肺匀浆中ＬＰＯ显著增加。推测烹调油烟引发脂质过氧化反应可能是造成ＡＭ和肺组织细胞直接损伤的重要机制之一。     

硅油下视网膜复位术疗效探讨

目的 总结硅油填充术后视网膜再脱离行硅油正视网膜复位术的疗效,探讨该手术的适应证及手术技巧。方法 对１７例（１７只眼）硅油填充术后视网膜再脱离者,在保留硅油的条件下,做睫状体扁平部３切口,在导光纤维的导引下行剥膜、断膜、视网膜切开、内放液、内激光光凝、视网膜下全氟化碳液体取出、补充硅油等使视网膜得位。结果 １７只眼中,术后视网膜重位１４只眼,成功率为８２．４％。术中硅油误入前房１只眼,误入脉络膜上