桦褐孔菌多糖的提取工艺优化及其对小鼠免疫功能的影响

本文通过响应面分析对桦褐孔菌多糖的提取工艺进行了优化,得到最佳提取工艺为提取温度100℃,提取时间3．5h,料液比1：25（g／mL）．在最佳提取工艺条件下,桦褐孔菌提取物多糖得率达到1．97％．桦褐孔菌粗多糖对正常小鼠和环磷酰胺致低免疫力小鼠碳粒廓清、淋巴细胞转化实验表明：桦褐孔菌粗多糖可显著提高正常和低免小鼠碳粒廓清功能和淋巴细胞增殖水平．     

十四员四氮杂大环钴(Ⅱ)配合物的合成与表征

以丁酮、乙二胺合成四乙基二甲基四氮杂大环席夫碱化合物,将其还原成四氮杂大环冠醚配体,然后再和高氯酸钴反应生成四氮杂大环冠醚配合物{Et4Me2[14]N4Co}·2C1O4,并用元素分析、红外光谱等手段时其结构进行了表征.     

氮杂冠醚化合物研究进展

评述了氮杂冠醚及其配合物化学的进展,系统地论述了氮杂冠醚与体及其配合物的合成方法,表征手段,波谱特征和应用领域。     

杀虫丁亚慢性染毒对小鼠免疫功能影响的研究

观察杀虫丁对小鼠免疫系统的影响,以白细胞总数、免疫器官脏器系数、血清溶血素水平、迟发超 敏足垫肿胀率及碳粒廓清指数为指标。连续天灌胃给药,、剂量,未见对免疫功能的280.2 mg/kg2.0 mg/kg 明显影响,在剂量,可见血清溶血素水平明显降低,表明杀虫丁在该剂量亚慢性染毒条件下对小鼠20 mg/kg体液免疫功能有显著性抑制作用,而对小鼠细胞免疫功能未观察到有明显作用。     

左旋多巴对四氮杂大环铜配合物催化的化学振荡反应的影响

四氮杂大环配合物催化的振荡反应引起了人们的广泛兴趣,这是因为此振荡反应更接近于生物振荡体系。选择了一种四氮杂大环铜配合物催化的化学振荡体系：NaBrO3-苹果酸-H2SO4[CuL]（ClO4）2,其中L为5,7,7,12,14,14-六甲基-1,4,8,11,-四氮环杂十四-4,11-二烯,研究了左旋多巴对该振荡体系的影响。结果表明,左旋多巴的加入明显改变了振荡体系的周期和振幅．且浓度与振幅的改变值△A呈现良好的线性关系,线性范围为：9．90×10^-6-2．44×10^-4,相关系数为0．9933。同时对加入左旋多巴后体系的反应机理进行了初步探讨．     

拟康氏木霉胞外总多糖免疫活性研究

目的:考察拟康氏木霉胞外总多糖的免疫活性.方法:腹腔注射环磷酰胺70mg/kg,造成免疫低下动物模型,灌胃50、100、200mg/(kg.d)剂量的拟康氏木霉胞外总多糖,分别采用碳粒廓清法、血清溶血素法和迟发型变态反应(耳肿胀法),检测该多糖对非特异性免疫、体液免疫和细胞免疫功能的影响.结果:该多糖能提高免疫低下小鼠的胸腺指数和脾指数,提升血清溶血素水平和迟发型变态反应.结论:拟康氏木霉胞外总多糖具有显著的免疫活性.     

百必舒清对自然衰老小鼠免疫功能及抗氧化能力的影响

观察百必舒清(BBSQ)对自然衰老小鼠免疫功能和抗氧化能力的影响。取自然衰老小鼠50只,随机分为百必舒清高、中、低剂量组,玉屏风颗粒组和正常对照组,每组10只。观察百必舒清对自然衰老小鼠碳粒廓清指数和吞噬指数,胸腺指数和脾脏指数,脑组织及肝脏中超氧化物歧化酶(SOD)、谷胱甘肽还原酶(GSH-Px)活性和丙二醛(MDA)含量的影响。百必舒清能提高自然衰老小鼠碳粒廓清指数和吞噬指数,提高脾脏指数和胸腺指数,增加脑组织和肝脏SOD、GSH-Px活性,降低脑组织和肝脏MDA含量。百必舒清具有增强自然衰老小鼠免疫功能和抗氧化作用。     

雷公藤巴布剂的抗炎免疫药理作用研究

雷公藤巴布剂能明显抑制巴豆油诱发的小鼠耳廓炎症;能显著抑制小鼠腹腔巨噬细胞的吞噬功能;降低小鼠碳粒廓清指数;能抑制T淋巴细胞百分比（外周血T淋巴细胞酶标记染色法）。皮肤刺激及皮肤过敏试验表明,一次及多次给药后各观察时间均未发生刺激反应,亦未发生全身过敏反应。结论：雷公藤巴布剂具有明显的抗炎和免疫抑制作用。无皮肤刺激性和过敏反应。     

新型四氮杂四乙酸大环配体与铜形成双核配合物的合成及表征

本文在水溶液中合成了新型四氮杂四乙酸大环配体 Ｈ４ Ｌ（５，１２－ 二苯基－ ７，１４－ 二甲基－ １，４，８，１１－ 四氮杂环十四烷－ Ｎ′， Ｎ″， Ｎ， Ｎ ′－ 四乙酸）与铜（Ⅱ）形成的固体配合物，并采用元素分析和红外光谱对其组成（ Ｃｕ２ Ｌ· Ｈ２ Ｏ）进行了表征，对所得结果进行了讨论。     

制何首乌致小鼠网状内皮系统对血流中惰性炭粒的吞噬廓清能力的影响

目的：研究不同浓度的制何首乌水煎浓缩液致小鼠网状内皮系统对血流中惰性炭粒的吞噬廓清能力的影响,探讨制何首乌调整免疫的最佳浓度。方法：以小鼠为实验对象,用2g/mL（大剂量）、1g/mL（中剂量）、0.5g/mL（小剂量）三种不同浓度的制何首乌水煎液给小鼠灌胃12d,采用炭粒廓清法来检测RES吞噬异物的能力。结果：大剂量能明显增强RES吞噬功能,中、小剂量组无显著性差异。结论：制何首乌浓度为2g/ml时可显著提高实验小鼠非特异性免疫功能,具有扶正固本的作用。     

Corrosion of carbon steel, zinc and copper by air pollution in Chongqing

This paper presents the research on the atmospheric corrosion rates of carbon steel, zinc and copper in Chongqing, which was a corrosion subprogram of an international project, Regional Air Pollution in Developing Countries. We performed field exposure tests of carbon steel, zinc and copper at an urban site Guanyinqiao and a rural site Tieshanping inChongqing, then used grey relational analysis, based on the database of the whole corrosion project, to determine the order of the effect of environmental factors on corrosion rates of tested metals, and established dose-response functions for these three metals. The results showed that the two crucial agents of acidic environment, SO2 and H , were common factors that contributed most to the corrosion of the tested metals. The established dose-response functions for outdoor carbon steel and zinc are proved applicable to use in Chongqing, but the function for copper needs further modifying. We employed these dose- response functions and general environmental data to elaborate the maps of corrosion rate respectively of carbon steel and zinc by geological information system (GIS) technique which help to identify areas of high corrosion damage risk. An acceptable annual average SO2 level of 21 μg/m3 for carbon steel and that of 61 μg/m3 for zinc are also put forward to control the air pollution impact on atmospheric corrosion in Chongqing urban areas.     

连翘苷对小鼠非特异性免疫及应激作用的实验研究

通过测定小鼠的碳粒吞噬能力、迟发性超敏反应和在常压缺氧条件下小鼠的存活时间等指标来评价连翘苷对非特异性免疫及应激反应的影响。可知连翘苷能提高小鼠吞噬碳粒的能力,吞噬指数和吞噬百分率增加,减轻小鼠迟发超敏反应时两耳重量之差,延长小鼠在常压缺氧条件下的存活时间。说明连翘苷可调节小鼠非特异性免疫功能并且有一定的抗应激能力。     

Enhancing cellular immune response to HBV M DNA vaccine in mice by codelivery of interleukin-18 recombinant

Objective: To investigate the effect of interleukin-18 (IL-18) on immune response induced by plasmid encoding hepatitis B virus middle protein antigen and to explore new strategies for prophylactic and therapeutic HBV DNA vaccines. Methods: BALB/c mice were immunized with pCMV-M alone or co-immunized with pcDNA3-18 and pCMV-M and then their sera were collected for analysing anti-HBsAg antibody by ELISA; splenocytes were isolated for detecting specific CTL response and cytokine assay in vitro. Results: The anti-HBs antibody level of mice co-immunized with pcDNA3-18 and pCMV-M was slightly higher than that of mice immunized with pCMV-M alone, but there was not significantly different (P>0.05). Compared with mice injected with pCMV-M, the specific CTL cytotoxity activity of mice immunized with pcDNA3-18 and pCMV-M was significantly enhanced (P<0.05) and the level of IFN-γ in supernatant of splenocytes cultured with HBsAg in vitro was significantly elevated (P<0.05) while the level of IL-4 had no significant difference (P>0.05). Conclusion: The plasmid encoding IL-18 together with HBV M gene DNA vaccines may enhance specific TH1 cells and CTL cellular immune response induced in mice, so that IL-18 is a promising immune adjuvant.     

Enhancing cellular immune response to HBV M DNA vaccine in mice by codelivery of interleukin-18 recombinant

INTRODUCTIONChronicinfectionwithHBVaffectsmorethan250millionpeopleworldwide.Therearemorethan120millionchronicHBVcarriersinChina;appro-ximately10percentofthemremaininstateofchronichepatitisandhaveahighriskofdevelop-mentofcirrhosisandhepatocellularcarcinoma.ButthereisnoeffectivemethodtocontrolchronicHBVinfectionatpresent.Recentdataindicatedthatim-munotherapeuticstrategiesstimulatingbothcellularandhumoralimmuneresponsestoHBVantigensareessentialforcuringchronicHBVinfection(ChisariandFe…     

睡眠剥夺对小鼠学习记忆和免疫功能的影响

应用水迷宫学习模型测试慢性不完全睡眠剥夺组动物和正常对照组动物的空间学习记忆能力,并计算出两组小鼠的胸腺指数和脾脏指数.结果发现,慢性不完全睡眠剥夺组动物与正常对照组相比,动物到达水下平台的时间和游程明显增加（P＜0.01）;动物的胸腺指数显著减小（P＜0.001）.说明慢性不完全睡眠剥夺导致小鼠学习记忆能力下降和免疫功能减弱.     

束缚应激小鼠对溶血空斑的影响

目的：研究束缚应激对小鼠溶血空斑形成试验的影响．方法：４０只小鼠,随机等分为对照组和应激组,用直接空斑形成试验（Ｐｌａｑｕｅ－ｆｏｒｍｉｎｇｃｅｌｌａｓｓｎｙ,ＰＦＣ）玻片法,测其溶血空斑形成数量．结果：应激组溶血空斑形成数量明显降低（Ｐ＜０．０１）．结论：束缚应激可致小鼠体液免疫功能降低．     

当归醋酸乙酯提取物抗炎镇痛作用的研究

当归醋酸乙酯提取物及水煎液,能显著地降低醋酸所致小鼠扭体反应发生率,提高小鼠热板法痛阀;能明显降低二甲苯所致小鼠耳廓肿胀程度;对大鼠蛋清性足跖肿胀和小鼠腹腔血管通透性,也有明显的对抗作用。急性毒性试验未观察到明显的毒性反应。