烹调油烟致肺组织P^53基因异常表达的实验研究

目的　检测吸入烹调油烟 (COF)的大鼠肺组织中P53 蛋白含量 ,以测试烹调油烟的毒性作用。方法　亚急性吸入浓度为 (43± 4 )mg m3 的烹调油烟作实验组 ,吸入加热空气 (2 4～ 2 8℃ )为阴性对照组 ,B(a)P气注法染毒 [12mg (kg·次 ) ,5天 1次 ]动物作阳性组。常规病理组织取材、切片 ,免疫组化法 (S -P试剂盒 )检测P53 蛋白水平。结果　阴性对照组P53 蛋白表达阴性 ;COF组有P53 蛋白表达 ,染毒时间越长 ,P53 蛋白阳性数越多 ,以细胞增生、异型增生病变组织中P53 表达阳性数为多 ;B(a)P组有P53 蛋白表达 ,但看不出时相规律。结论　烹调油烟致P53 蛋白表达增高     

髂内动脉注入鸦油乳对狗正常膀胱组织影响的研究

目的 为鸦油乳掏膀胱肿瘤生长提供组织学依据。方法 正常狗随机分为：注药组（７只）和对照组（３只）,分别经髂内动脉注入鸦油乳０．１ｍｇ／ｋｇ、美蓝０．１ｍｌ／ｋｇ。１周后,随机活检膀胱各个部位作光镜及电镜观察。结果 注药组光镜可见粘膜上皮细胞脱落、坏死、肌层和浆膜充血、水肿、坏死以及急、慢性炎性细胞浸润;电镜发现在微血管内有鸦油乳微栓形成,并见细胞质膜结构的破坏。而对照组未发现明显变化。结论 鸦油乳     

UV-Cured PDMS for Oil Removal from Wastewater

The removal of oil from water is a worldwide challenge that must be faced to avoid irreversible marine habitat destruction. A novel fast and simple technique to obtain polydimethylsiloxane (PDMS) membranes is developed using the photopolymerization technique. The high reactivity of the acrylated PDMS formulation toward photo-induced free radical polymerization is assessed via the differential scanning photo-calorimetry (photo-DSC) technique. Two different membranes dense or porous are developed and investigated. Porous membranes, having 100–200 µm as pore size, are obtained using a low-cost environmentally friendly sodium chloride template. Thanks to the hydrophobic/oleophilic intrinsic characteristic of PDMS, the UV-cured membranes can selectively remove dodecane, selected as the target oil, from water. The dodecane sorption capability of both membranes is investigated and compared. Moreover, the membranes can be easily reused since the adsorbed oil can be recovered by simply compressing the membrane. Those PDMS sorbents show high mechanical stability after five adsorption/desorption cycles.     

Anti-inflammatory activity of emu oils in rats

The anti-inflammatory activities of five different preparations of emu (Dromais Novae-Hollandiae) oil, applied topically, have been examined using an experimental polyarthritis- in rats. Four of the preparations were found to be active against adjuvant-induced arthritis in rats. The efficacies of the emu oils acting transdermally are compared with that of orally administered ibuprofen (40 mg/kg).     

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。