角燕胶囊对小鼠免疫功能的影响

目的 观察深海鱼类提取物角燕胶囊对小鼠免疫功能的影响。方法从海洋大型软骨鱼角燕的有效部位中制备得到角燕胶囊,用0.043,0.087,0.26g·kg-1剂量的角燕胶囊给小鼠灌胃30d,观察其对小鼠免疫功能的调节作用。结果 在0.087g·kg-1和0.26g·kg-1剂量,角燕胶囊能显著提高小鼠的血清溶血素含量、增加脾细胞的溶血空斑数、明显增强小鼠的碳廓清能力、促进小鼠的迟发型超敏反应、促进ConA诱导的小鼠脾淋巴细胞转化能力、提高NK细胞的杀伤活性及腹腔巨噬细胞的吞噬能力。结论 角燕胶囊能明显调节机体的细胞免疫与体液免疫功能,促进NK细胞的杀伤活性及巨噬细胞的吞噬能力。     

长科制剂增强试验动物的免疫功能

通过在体试验探讨长科制剂(CKBM)对机体免疫力的影响。按每千克体重50mg给予环磷酰胺(cycIophosphamide,Cy)腹腔注射诱发小鼠免疫力低下模型,观察高、中和低剂量长科制剂对脾指数、巨噬细胞吞噬率、吞噬指数及NK细胞杀伤活性等免疫功能指标的影响。结果表明长科制剂可明显改善免疫力低下小鼠模型的部分免疫功能,而对正常小鼠的免疫力无影响。     

孔石莼多糖对小鼠免疫功能的影响

目的观察孔石莼多糖对小鼠免疫功能的影响。方法应用水煮醇沉法从海洋生物孔石莼中获得孔石莼多糖,观察孔石莼多糖对小鼠免疫功能的调节作用。结果200 mg/(kg.d)孔石莼多糖能明显促进小鼠的胸腺指数和脾指数。100,200 mg/(kg.d)剂量能显著促进ConA诱导的小鼠脾淋巴细胞转化能力,增强小鼠的迟发性超敏反应,提高小鼠的血清溶血素水平,增强小鼠的碳廓清能力,提高小鼠NK细胞的杀伤活性。结论孔石莼多糖能明显调节机体的细胞免疫与体液免疫功能,促进NK细胞的杀伤活性及巨噬细胞的吞噬能力。     

蚯蚓QY-Ⅰ对荷瘤小鼠免疫功能及抗氧化酶的影响

目的 从观察对荷瘤小鼠免疫功能及对抗氧化酶的影响，初步探讨蚯蚓QY-Ⅰ的抗肿瘤机制。方法 分别测定正常与口服给药后小鼠腹腔巨噬细胞的吞噬率；观察测定QY-Ⅰ对荷瘤小鼠的抑瘤作用、免疫器官重量的影响及其血中过氧化氢酶CAT、超氧化物歧化酶SOD和谷胱甘肽过氧化物酶GSH-Px的活性。结果 QY-Ⅰ能显著增强小鼠巨噬细胞的吞噬功能，提高荷瘤小鼠的脾指数和胸腺指数，并能增加小鼠血中CAT、SOD和GSH-Px三种抗氧化酶的活性。结论 QY-Ⅰ能通过增强小鼠免疫功能，清除自由基抗脂质过氧化作用。从而抑制肿瘤的生长。     

酶降解的枸杞多糖免疫增强作用实验研究

目的研究酶降解的枸杞多糖（LBP）对正常小鼠及免疫功能低下小鼠免疫功能的影响。方法酶解法得到中相对分子质量枸杞多糖,分别以50,100,200 mg/kg小鼠灌胃给药,连续10 d,通过免疫器官质量测定、炭粒廓清试验、脾脏T及B淋巴细胞转化试验观察其对免疫功能的影响。注射环磷酰胺造成免疫功能低下模型,测定小鼠的白细胞数、胸腺指数、脾指数,观察其对免疫功能的影响。结果与对照组比较,中、高剂量酶降解的枸杞多糖能增大脾脏指数及胸腺指数（P〈0.01）,能提高吞噬指数及校正吞噬指数（P〈0.05）,能提高B淋巴细胞增殖能力（P〈0.05）;中剂量酶降解的枸札多糖能提高T淋巴细胞增殖能力（P〈0.05）;低、中、高剂量酶降解的枸杞多糖均能提高环磷酰胺模型小鼠的白细胞数、胸腺指数、脾指数（P〈0.05）。结论酶降解的枸杞多糖具有免疫增强作用。     

角燕制剂的抗肿瘤作用研究

采用盐溶液抽提,有机溶剂分级沉淀,分子筛层析等步骤,从海洋鱼类－－角燕的有效部位中制备得到角燕制剂。选用Hela细胞为研究, 肺成纤维细胞HLE为正常对照细胞,采用MTT测定法测定了不同剂量的角燕抗肿瘤制对上述两种细胞生长的抑制效应。结果显示角燕制剂显著抑制肿瘤细胞的生长,并有明显的剂量依赖关系;而对人肺成纤维细胞的生长无明显的影响。采用台盼蓝染色测定了角燕制剂对Hela细胞和HLF细胞的细胞毒作用,结果显示角燕制剂对Hela细胞产生明显的细胞毒作用,对HLF细胞无明显影响。提示角燕制剂在细胞水平上能够抑制肿瘤的生长。选用小鼠lewis肺癌模型、S180肉瘤模型,评价角燕制剂的抗肿瘤作用,结果显示角燕制剂在剂量0．25－1．00mg.g^－1的范围内对小鼠Lewis肺癌、S180肉瘤的生长均具有显著的抑制作用,且呈较好的剂量依赖关系,在剂量为1．00mg.g^-1时,对小鼠Lewis肺癌、S180肉瘤的抑瘤率为59＝11％、54．67％。提示角燕制剂能够有效抑制小鼠体内肿瘤的生长。     

复方灵芝胶囊对小鼠的免疫调节作用

目的探讨复方灵芝胶囊(FFLZc)的免疫调节作用。方法测定小鼠的脾指数、胸腺指数、廓清指数、吞噬指数、血清溶血值、左右耳片重量差、NK细胞活性。结果复方灵芝胶囊中剂量(生药量4.500 g.kg-1)能显著提高免疫低下小鼠的血清溶血值;复方灵芝胶囊高剂量(生药量9.000 g.kg-1)能显著提高免疫低下小鼠的胸腺指数、左右耳片重量差、NK细胞活性;复方灵芝胶囊中高剂量均能提高免疫低下小鼠的廓清指数。结论复方灵芝胶囊能够提高免疫低下小鼠的胸腺指数、巨噬细胞吞噬功能、T细胞和NK细胞活性及体液免疫功能。     

瓜蒌皮对环磷酰胺致免疫功能低下小鼠免疫功能的影响

目的:研究瓜蒌皮对环磷酰胺致免疫功能低下模型小鼠免疫功能的影响。方法:以ip环磷酰胺建立小鼠免疫低下模型,ig给予瓜蒌皮浓缩液后采用含药血清体外培养小鼠腹腔巨噬细胞,MTT法考察巨噬细胞的活性及其吞噬鸡红细胞的吞噬百分率和吞噬指数;测定小鼠体内巨噬细胞的吞噬指数和吞噬系数、血清溶血素含量、淋巴细胞的转化率。结果:瓜蒌皮能提高免疫抑制小鼠吞噬系数、血清溶血素含量,促进T淋巴细胞转化;能提高巨噬细胞的活性及其吞噬鸡红细胞的能力。结论:瓜蒌皮有提高免疫抑制小鼠免疫功能的作用。     

疏通化纤丸对小鼠免疫功能的调节作用

目的观察疏通化纤丸对小鼠免疫功能的影响。方法以地塞米松引起小鼠免疫功能低下 ,以左旋咪唑作阳性对照 ,测定疏通化纤丸对免疫功能正常和低下小鼠巨噬细胞吞噬功能、血清溶血素含量以及ConA诱导T淋巴细胞增殖的作用。结果疏通化纤丸能明显提高免疫功能正常和低下小鼠的廓清指数、吞噬指数 ,能促进ConA诱导的正常小鼠脾淋巴细胞的增殖 ,而左旋咪唑仅对免疫低下的小鼠才有提高以上指标的功能。结论疏通化纤丸对机体免疫功能具有显著的提高作用。     

混合真菌多糖制剂对小鼠耐力及免疫功能的影响

研究混合真菌多糖制剂对小鼠耐力及免疫功能的影响。方法：混合真菌多糖制剂按４．０、８．０ｇ／ｋｇ连续灌胃给药 ７ ｄ,分别测定小鼠耐缺氧能力、抗疲劳作用、免疫器官称重以及网状内皮系统吞噬功能等。结果：混合真菌多数能明显提高小鼠的耐缺氧及抗疲劳能力,促进正常小鼠免疫器官重量增加,增加网状内皮系统的吞噬功能,并能使环磷酸胺所致免疫功能低下小鼠外周血白细胞增加,促进骨髓有核细胞增殖及增加脾指数。结论：混合真菌多精制剂具有增强机体免疫功能及升高白细胞等作用。     

Immunotoxicity of N,N-diethylaniline in mice: effect on natural killer activity, cytotoxic T lymphocyte activity, lymphocyte proliferation response and cellular components of the spleen

We previously found that N,N-diethylaniline increased the frequency of sister chromatid exchange (SCE) of human lymphocytes to about five times that of the control value, and was as toxic as cyclophosphamide used as a positive control for SCE. To explore whether N,N-diethylaniline affects the function of lymphocytes, we evaluated its immunotoxicity using CBA/N mice. The mice were divided into four groups and received 0, 100, 200, or 400 mg/kg body weight of N,N-diethylaniline by subcutaneous injection. The following items were investigated on days 3 and 7 after injection: body weight, weight of spleen, number of splenocytes, natural killer (NK) and cytotoxic T lymphocyte (CTL) activities, and concanavalin A (Con A)- and lipopolysaccharide (LPS)-stimulated lymphocyte proliferation using splenocytes. The following splenocyte phenotypes were also quantified by flow cytometry: (1) B cells; (2) total T cells; (3) CD4⁺ and CD8⁺ T cells; (4) NK; (5) macrophages and (6) nucleated erythrocytes. The splenic NK and CTL activities in exposed groups significantly decreased compared to the control in a dose-dependent manner and lymphocytes from the 200 and 400 mg/kg groups showed significantly higher spontaneous proliferation. The weight of the spleen and number of splenocytes were significantly higher in exposed groups than in the control. N,N-Diethylaniline also increased the percentages of macrophages, nucleated erythrocytes and B cells in the spleen. On the other hand, N,N-diethylaniline did not affect LPS-stimulated B cell and Con A-stimulated T cell proliferation, or the percentages of NK, total T, and CD4⁺ and CD8⁺ T cells in the spleen or the body weight of mice. The above findings indicated that N,N-diethylaniline selectively inhibited splenic NK and CTL activity and this inhibition was due to decreased NK and CTL functions, but not due to changes in the numbers of splenic NK and T cells.     

屏风固金颗粒免疫调节作用的血清药理学研究

目的：研究屏风固金颗粒含药血清对小鼠免疫调节作用的影响。方法：灌胃法给予小鼠屏风固金颗粒混悬液，分别于给药后第1、3、5、7、9天取血、分离血清，检测自然杀伤（NK）细胞杀伤活性、脾脏T细胞增殖活性和分泌白细胞介素-2（IL-2）活性等免疫功能指标。结果：（1）第3～9天时的含药血清均能促进小鼠脾淋巴细胞增殖，其中第7天最明显；（2）第1～9天时的含药血清对小鼠IL-2的产生有明显促进作用，其中第5天达到药效最高峰；（3）第5～9天时的含药血清对NK细胞活性有明显增强作用。结论：屏风固金颗粒含药血清对小鼠免疫功能具有增强作用。     

花生蛋白多肽对小鼠免疫功能的影响

目的探讨花生蛋白多肽对正常小鼠免疫调节作用。方法BALB／c小鼠按随机原则分为4个批次,第一批进行动物进行抗体生成细胞检测、绵羊红细胞诱导小鼠足趾增厚（DTH）和血清凝血素测定（HC50）;第二批动物进行小鼠腹腔巨噬细胞吞噬鸡红细胞实验;第三批脏器／体质量比值和小鼠碳廓清实验四批动物进行ConA诱导的小鼠脾淋巴细胞转化实验和乳酸脱氢酶法（LDH）测定NK细胞活性。每批动物分为低、中、高三个剂量组和一个溶剂对照组。结果中剂量组和高剂量组花生蛋白多肽可增强小鼠碳廓清和绵羊红细胞诱导小鼠DTH能力（P〈0．05）;高剂量组花生蛋白多肽能提高小鼠腹腔巨噬细胞吞噬鸡红细胞能力（吞噬百分率P〈0．O5;吞噬指数P〈0．05）、促进促进ConA诱导的小鼠脾淋巴细胞转化能力（P〈0．05）、抗体生成细胞数的生成（P〈0．05）、血清凝血素的生成∽〈O．05）和NK细胞活性（P〈0．05）;但对免疫器官／体质量比值和无明显影响。结论花生蛋白多肽对正常小鼠的细胞免疫、体液免疫和单核一巨噬细胞功能和NK功能有促进作用,即具有增强免疫力功能。     

龟芪散对小鼠免疫调节作用的拆方分析

目的观察龟芪散及其拆方对小鼠免疫功能的调节作用。方法用环磷酰胺损伤小鼠的免疫功能 ,分析龟芪散及其拆方对淋巴细胞的影响。结果该方可明显对抗环磷酰胺引起的小鼠脾脏的退化或提高其内在质量 ;促进免疫受损小鼠T、B淋巴细胞增殖 ;促进NK活性 ;通过增加CD4 细胞数量而提高CD4 /CD8 细胞比率 ;降低免疫受损小鼠脾细胞内cAMP水平。全方效果好于拆方 ,亦好于云芝多糖(PSP)。但对正常小鼠的免疫功能无明显影响。结论龟芪散具有免疫调节效应。     

拳参乙醇提取物的免疫调节作用

目的 研究拳参乙醇提取物(BRE)的免疫调节作用.方法 在小鼠体外实验中,通过比色分析法检测小鼠巨噬细胞系RAW264.7细胞吞噬中性红的能力.在小鼠体内实验中,通过测定胸腺、脾脏重量并计算脏器指数;MTT法检测T淋巴细胞增殖和NK细胞活性;鸡红细胞免疫后测定小鼠血清溶血素抗体水平;ELISA法测定血清中IL-2含量....     

海洋星虫提取物的营养分析及免疫调节作用的初步观察

目的测定海洋星虫提取物的蛋白质、氨基酸和微量元素含量 ,并初步观察其对小鼠免疫功能的影响。方法采用盐溶液抽提、超滤、乙醇沉淀等步骤 ,从海洋星虫制备得到海洋星虫提取物 ,分别采用凯氏定氮法、氨基酸自动分析仪和等离子体发射光谱仪测定蛋白质含量、氨基酸组成和微量元素水平。结果海洋星虫提取物的蛋白质含量为 5 5 .3% ,含牛磺酸、赖氨酸、精氨酸等 18种氨基酸和Zn、Cu、Ge、Se等 7种微量元素。动物实验表明 ,海洋星虫提取物能显著提高小鼠的胸腺指数和脾指数 ,促进脾脏T淋巴细胞转化。结论海洋星虫提取物营养丰富 ,能明显提高机体的免疫功能。     

Different cellular responses of dexmedetomidine at infected site and peripheral blood of emdotoxemic BALB/c mice

Various sedative agents, including dexmedetomidine (dex), induce immunosuppression, and enhance infection progression. However, there was no information on how anesthetic affects local and systemic cellular immune function. We conducted this study to examine the impact of dex on the differentiation and function of immune cells at site of inflammation and in peripheral blood during endotoxemia of mice. In BALB/c mice with and without endotoxemia, we evaluated the influence of two dosages of 5 and 50 mcg/kg/h intravenous dex on immune cells: including number of T cells (CD3), B cells (CD19), natural killer cells (CD8a), monocytes (CD11b), and macrophages (Mac‐3) in peripheral blood, the activities of macrophages in peripheral blood and in peritoneal lavage, and proliferation of B and T cells and of natural killer cells activity in the spleen. Endotoxemia increased the number of CD3 T cells, CD 19 B cells and macrophages in the peripheral blood, augmented macrophage activity in the peritoneum, and increased T cell proliferation and natural killer cell activity in the spleen. Further administration of 5 mcg/kg/h dex attenuated systemic increase in number of T cells, B cells, and macrophages during endotoxemia and 50 mcg/kg/h dex significantly attenuated the increase in activity of macrophages in the peripheral blood during endotoxemia. In the peritoneum, however, 5 mcg/kg/h dex preserved and 50 mcg/kg/h dexmedetomidine enhanced the activity of macrophages during endotoxemia. Increased in proliferation of T cells in spleen during endotoxemia was attenuated by both doses of dex. Last, 50 mcg/kg/h dex enhanced natural killer cells activity during endotoxemia. While preserving the effects of endotoxemia on macrophage's activity in the infection site and natural killer cell's activity in the spleen, dex decreased systemic fulminant immune reaction in endotoxemia, by attenuating the augmented response in the number of T cells, B cells and macrophages, activity of macrophages in the peripheral blood, and proliferation of T cells in spleen during endotoxemia. © 2014 Wiley Periodicals, Inc. Environ Toxicol 30: 1416–1422, 2015.     

Mechanism of action of BCG vaccine on neoplastic proliferation and host immune responses.

BCG (Bacillus Calmette-Guerin) vaccine, Tice strain, caused a threefold increase in spleen weight of normal animals and a fourfold increase in spleen weight of sarcoma-bearing mice. In the latter group, the BCG vaccine caused infiltration of the sarcoma cells into the peritoneum and tumor metastasis in the spleen. Spleen lymphocytes from mice immunized with neuraminidase-treated sarcoma or from mice that had overcome an inoculum (100 cells) and a challenge (10(4) cells) of sarcoma P-1798 were cytotoxic against 51 Cr- or 14C-2-thymidine-labeled sarcoma cells. The serum of these mice enhanced the cytotoxic activity and inhibited the migration of the syngeneic lymphocytes. These serums also inhibited the migration of peritoneal macrophages from guinea pigs immunized with the sarcoma cells. BCG vaccine enhanced the development and growth of sarcoma P-1798; i.e., 50-100 viable sarcoma cells produced solid tumors in 8% of the untreated animals but in 100% of the BCG-treated animals. The serum of BCG-treated sarcoma-bearing animals inhibited the spleen lymphocyte-mediated cytotoxic action. The spleen lymphocytes from the BCG-treated sarcoma-bearing animals had no effect against 51Cr- or 14C-2-thymidine-labelled sarcoma cells. The data indicate that the serum from BCG-treated sarcoma-bearing animals blocks the spleen lymphocyte-mediated cytotoxic activities directed against proliferation and growth of the sarcoma.