银耳孢糖对小鼠体内移植性肿瘤及免疫功能的影响

目的 研究银耳孢糖(Tremella fuciformis spores polysaccharide,TSP)对小鼠移植性肿瘤及免疫功能的影响.方法利用小鼠肝癌H22及小鼠肉瘤S180的体内移植性肿瘤模型,腹腔连续给予TSP 12 d,称小鼠体重及肿瘤、脾脏和胸腺重量,测定脾淋巴细胞转化率及NK细胞杀伤活性.同时观察TSP对正常小鼠免疫器官重量和碳粒廓清的影响.结果TSP 25,50,100mg·kg-1对小鼠肝癌H22及小鼠肉瘤S180有一定的抑制作用,抑瘤率分别为17.8%,27.6%,34.9%;32.8%,36.1%,44.0%;TSP 50,100 mg·kg-1能提高荷瘤小鼠脾NK细胞杀伤活性及淋巴细胞转化率(P<0.05).此外,TSP 50,100mg·kg-1亦能明显提高正常小鼠脾脏和胸腺的重量及网状内皮系统吞噬功能(P<0.05).结论 TSP对小鼠移植性肿瘤有一定的对抗作用,其抗肿瘤作用可能与增强机体免疫能力有关.     

龙须菜多糖抑瘤活性及对荷瘤小鼠抗氧化作用的研究

目的 探讨龙须菜多糖(PGL)抗肿瘤作用及对荷瘤小鼠抗氧化能力的影响.方法 以S180荷瘤小鼠为模型,研究龙须莱热水提取的多糖对S180肉瘤生长的影响,通过测定S180荷瘤小鼠血液红细胞中超氧化物歧化酶(SOD)活性和肝匀浆中脂质过氧化物(LPO)含量评价PGL对小鼠抗氧化能力的作用.结果 PGL可显著抑制小鼠S180肉瘤的生长,当灌胃剂量为150mg·kg-1时,抑瘤率达63.56%,并能明显降低荷瘤小鼠体内LPO含量.结论 PGL能提高荷瘤小鼠抗氧化能力,PGL具有的抗氧化作用可能是实现其抗肿瘤活性的机制之一.     

胡桃楸提取物的抗肿瘤作用

目的探讨胡桃楸提取物SH体内外抗肿瘤活性。方法体外实验应用MTT法检测SH对人宫颈癌细胞株HeLa、小鼠腹水型肝癌细胞株Hca-F的增殖抑制作用;体内实验应用小鼠S180实体瘤动物模型,通过对荷瘤小鼠体质量以及抑瘤率的影响,评价SH不同剂量(4.5、9.0、18.0 mg·kg-1)以及与化疗药物环磷酰胺(cyclophosphamide,CTX)联合用药对S180肉瘤的生长抑制作用。结果体外实验表明,SH可以显著抑制HeLa、Hca-F肿瘤细胞的增殖;体内实验表明,SH具有明显的抑瘤作用,中、高剂量组(9、18 mg·kg-1)的抑瘤率分别为25.9%和35.3%,与CTX联合用药时,能够提高CTX的抑瘤率,中、高剂量组(9+10 mg·kg-1、18+10 mg·kg-1)抑瘤作用呈现相加作用。结论胡桃楸提取物SH,在体外能够明显抑制HeLa、Hca-F肿瘤细胞的增殖,在体内能够抑制荷瘤小鼠S180肉瘤生长,提示胡桃楸提取物SH具有一定的抗肿瘤活性。     

螺旋藻多糖硫酸酯化修饰前后抗肿瘤及免疫活性的研究

比较螺旋藻多糖硫酸酯化修饰前后体内外抗肿瘤及免疫活性.采用MTT比色法研究药物在体外对人肿瘤细胞株的抑制作用,促进正常小鼠脾淋巴细胞的增殖活性以及对荷瘤小鼠NK和CTL细胞活性的影响.采用移植性肿瘤实验方法考察了药物对小鼠S180肉瘤的抑制作用.结果显示,螺旋藻多糖（NPSP）对肿瘤细胞株几乎无细胞毒作用,硫酸酯化螺旋藻多糖（SNPSP）对肿瘤细胞株具有显著的细胞毒作用,其中对SMMC-7721人肝癌细胞株抑制率最高达50%.NPSP50 mg/kg对小鼠S180肉瘤无抑制,相同剂量的SNPSP对小鼠S180肉瘤的抑制率达35.42%.NPSP具有促进脾淋巴细胞增殖作用,但对ConA和LPS诱导的脾淋巴细胞增殖反应无促进作用,SNPSP促进脾淋巴细胞增殖作用较NPSP增强,同时对ConA和LPS诱导的脾淋巴细胞增殖反应也具有明显的促进作用.NPSP和SNPSP均能促进荷瘤小鼠NK细胞和CTL细胞活性,其中SNPSP促进CTL细胞活性较NPSP增强.     

中药CHH复方对小鼠S180肉瘤的抑制作用

目的:探讨中药CHH复方对S180肉瘤荷瘤小鼠的抑瘤作用,为实验研究提供数据参考.方法:以环磷酰胺作为对照组,分析5 mg·kg-1,10 mg·kg-1,20 mg·kg-1剂量的中药CHH复方皮下注射,观察对小鼠S180肉瘤的抑瘤率.结果:5 mg·kg-1剂量的抑瘤率27.4%、10 mg·kg-1剂量的抑瘤率41.6%、20 mg·kg-1剂量的抑瘤率66.0%.结论:试验结果提示CHH复方对小鼠肉瘤S180有明显的抑制作用.     

灵芝孢子多糖抗移植性肿瘤实验研究

目的研究灵芝孢子多糖的抗癌作用。方法采用小鼠抗移植性肿瘤实验方法。结果灵芝孢子多糖分别以150 mg.kg-13、00 mg.kg-1和600 mg.kg-1剂量连续12天灌胃给药,对小鼠移植性肝癌Heps的抑瘤率为53.77%~65.25%;连续8天灌胃给药,对小鼠移植性肉瘤S180的抑瘤率为50.39%~55.04%,皆呈良好的抑瘤作用。灵芝孢子多糖可分别提高Heps和S180荷瘤小鼠的脾指数和胸腺指数。结论灵芝孢子多糖有良好的抑瘤作用,并可增强Heps和S180荷瘤小鼠的非特异性免疫功能。     

半枝莲多糖对小鼠S_(180)肉瘤及免疫功能的影响

目的研究半枝莲多糖体内抗肿瘤作用和免疫增强作用。方法采用动物移植性肿瘤实验观察半枝莲多糖对小鼠体内肿瘤细胞生长和免疫器官—胸腺、脾的影响,ELISA法检测对荷瘤小鼠外周血血清中白细胞介素-2和干扰素-γ含量的影响,激光共聚焦检测对荷瘤小鼠脾淋巴细胞内钙离子浓度的影响。结果半枝莲多糖对S180肉瘤生长的抑制率以中剂量为佳;各剂量组均对脾脏指数有显著性差异,但大剂量注射(200mg.kg-1),对胸腺有抑制作用;能够提高S180荷瘤小鼠外周血血清中白细胞介素-2及干扰素-γ的含量,并以中剂量最为显著,且使脾淋巴细胞中钙离子浓度升高。结论半枝莲多糖在小鼠体内具有抑制S180肉瘤的作用,并能增进荷瘤小鼠免疫力。     

黄连解毒汤体内外抗肿瘤作用的实验研究

目的：观察黄连解毒汤的体内、体外抗肿瘤作用。 方法：采用小鼠肉瘤S180和小鼠前胃癌MFC等移植性肿瘤模型进行体内实验,通过检测抑瘤率、胸腺指数、脾脏指数等指标观察黄连解毒汤的体内抑瘤作用及对免疫器官的影响。并用MTT方法检测黄连解毒汤对小鼠S180、小鼠MFC、人胃癌SGC-7901、人肝癌SMMC-7721等4种瘤株的抑制作用。结果：黄连解毒汤大、中剂量组中对S180荷瘤小鼠有抑制作用,大剂量组对MFC荷瘤小鼠有抑制作用,抑瘤率分别为48.38%、33.77%、30.74%;对S180、MFC、SGC-7901和SMMC-7721细胞均有一定的细胞毒作用, IC50分别为99.73 mg?L-1、84.47 mg?L-1、153.32 mg?L-1和102.87 mg?L-1。结论：黄连解毒汤体内对S180、MFC小鼠移植瘤有一定的抗肿瘤活性,体外对4种肿瘤细胞也具有抑制作用。     

当归多糖-1cII的抗肿瘤活性研究

目的:研究当归多糖-1cII(Angelica polysaccharide-1cII,APS-1cII)的体内外抗肿瘤作用及其对荷瘤小鼠免疫功能的影响.方法:采用MTT法检测APS-1cII对体外培养的5种肿瘤细胞增殖的抑制作用;建立小鼠移植瘤模型,采用荷瘤小鼠抑瘤率检测APS-1cII对荷S180肉瘤小鼠的体内抗肿瘤作用.以对荷瘤小鼠免疫器官质量、血液淋巴细胞数量、巨噬细胞对中性红的吞噬率、巨噬细胞产生细胞因子的影响评价APS-1cII对小鼠免疫功能的作用.结果:体外实验中APS-1cII在10～1 000 mg·L-1浓度范围内对培养的4种肿瘤细胞无抑制作用,体内实验中在20～100 mg·kg-1剂量范围内剂量依赖性地抑制移植性动物肿瘤S180的生长,显著提高荷瘤小鼠脾脏和胸腺质量、血液淋巴细胞数量.经APS-1cII刺激后,小鼠巨噬细胞分泌肿瘤坏死因子-α和白细胞介素-1β的量明显增加.结论:APS-1cII体外无抗肿瘤作用,其体内抗肿瘤活性是通过增加荷瘤小鼠免疫器官的质量和免疫细胞的数量,激活小鼠巨噬细胞实现的.     

吉非替尼脂质体对S_(180)荷瘤小鼠药效学研究

目的考察吉非替尼脂质体对S180荷瘤小鼠抗肿瘤作用及对免疫系统的影响。方法采用硫酸铵梯度法制备吉非替尼脂质体,利用透析法考察其体外释放度,以S180荷瘤小鼠为动物模型,给药剂量分别为20mg·kg-1及40 mg·kg-1,计算抑瘤率、脾脏指数及胸腺指数,并进行统计学分析。结果吉非替尼脂质体体外释放度符合Higuchi动力学模型,高剂量组的相对质量抑瘤率为72.02%,脾脏指数及胸腺指数与对照组差异均无统计学意义。结论吉非替尼脂质体对小鼠S180肿瘤有明显的抑制作用,对其免疫系统没有明显损伤。     

西洋参有效部位的抗肿瘤作用研究

目的　探讨西洋参有效部位 (Panaxquinquefolium'ef fectiveparts, PQEP)的抗肿瘤作用及其免疫调节作用。方法采用小鼠肝癌(H22)和胃癌(MFC)两种移植瘤的动物模型,以肿瘤抑制率、免疫器官重量、NK细胞活性和淋巴细胞增殖率作指标。结果　PQEP有明显的抗肿瘤活性和免疫调节作用。结论　其抗肿瘤作用和其免疫调节作用有明显的相关性,PQEP的抗肿瘤作用可能与激活体内免疫系统有关。     

In vivo growth-inhibition of S180 tumor by mixture of 5-Fu and low molecular lambda-carrageenan from Chondrus ocellatus.

Lambda-carrageenan is a sulfated galactan isolated from some red algae and have been reported to have many kinds of biological activities. Chondrus ocellatus is an important economic alga in China and many other parts of the world. The sample was obtained after lambda-carrageenan from the alga was degraded by microwave and its molecular weight is 9.3 kDa. In this study, tumor inhibiting activity of low molecular weight lambda-carrageenan and its mixture with 5-Fu on mice transplanted with S180 tumor was investigated. Weight of immune organ, proliferation ratio of lymphocyte concentration of TNF-alpha and histopathology of spleen and tumor from the transplanted S180 tumor mice were also determined. Results indicated that the degraded lambda-carrageenan could enhance antitumor activity of 5-Fu and improve immunocompetence damaged by 5-Fu.     

中药仙鹤复方水提取物对S180肉瘤和H22肝癌细胞在小鼠体内的抗肿瘤作用研究

目的观察中药仙鹤复方水提取物对移植型鼠源S180肉瘤和H22肝癌细胞在荷瘤动物体内抗肿瘤作用。方法昆明种受试小鼠,接种S180肉瘤和H22肝癌细胞后随机分为空白对照组、阳性对照组及中药仙鹤复方水提取物高、中、低3个剂量组。观察中药仙鹤复方水提取物对肿瘤的抑制作用及动物体质量、免疫器官重量的影响。结果中药仙鹤复方水提取物对鼠源移植型S180肉瘤细胞和H22肝癌细胞在荷瘤小鼠体内的增殖均有明显的抑制作用;且对两种荷瘤小鼠的免疫器官脾脏及胸腺均有显著性的保护作用影响。结论中药仙鹤复方水提取物在动物体内具有较好的抑瘤作用,且对荷瘤小鼠免疫器官有保护作用,具备减毒的功效。     

In vivo antitumor and immunomodulation activities of different molecular weight lambda-carrageenans from Chondrus ocellatus.

lambda-Carrageenan is a sulfated galactan isolated from some red algae and have been reported to have many kinds of biological activities. lambda-Carrageenan from Chondrus ocellatus, an important economic alga in China and many other parts of the world, was degraded by microwave, and obtained five products that have different molecular weight: 650, 240, 140, 15, 9.3 kDa. Analytical results confirmed that microwave degradation might not change the chemical components and structure of polysaccharides under certain condition. In this study, tumor-inhibiting activities, weight of immune organ, nature killer cells activity, lymphocyte proliferation ratio and pathological slice of spleen and tumor cells from the control group and lambda-carrageenan-treated mice of transplanted S180 and H22 tumor were investigated. The results indicated that the five lambda-carrageenan samples all showed antitumor and immunomodulation activities in different degree. Molecular weight of polysaccharides had notable effect on the activities. In addition, their antitumor and immunomodulation have some relevance and the five lambda-carrageenans probably inhibited tumor by means of activating the immunocompetence of the body. Among all the experiment results, samples with the highest activities are PC4 and PC5 whose molecular weight are 15 and 9.3 kDa.     

肝康灵胶囊对化疗药物的增效减毒作用研究

目的:研究肝康灵胶囊(GKL)对化疗药物的增效减毒作用。方法:以体内抑瘤实验测定GKL单独使用及与顺铂(DDP)伍用时对小鼠移植性肿瘤(S180肉瘤、H22肝癌和Lewis肺癌肿瘤)的抑癌率,并考察GKL分别与DDP和丝裂霉素(MMC)伍用时对荷瘤小鼠白细胞数、免疫器官质量、巨噬细胞吞噬功能和自然杀伤(NK)细胞活性的影响。结果:GKL对小鼠移植性肿瘤(S180肉瘤、H22肝癌和Lewis肺癌肿瘤)均有抑制作用;当其分别与MMC和DDP伍用时,能显著提高2种化疗药物的抑癌率(P<0.01);GKL还可显著减少MMC和DDP所致小鼠白细胞下降、免疫器官萎缩、巨噬细胞吞噬功能下降和NK细胞活性降低等副作用。结论:GKL具有显著的抗肿瘤和增效减毒作用。     

Characterization and anti-tumor activity of pollen polysaccharide

The polysaccharide LBPP was extracted and isolated from the pollen of Brassica napus L., and the anti-tumor activity was evaluated on Sarcoma 180-bearing mice and B16 melanoma-bearing mice through transplantable animal tumor. Mice were treated with three doses of the polysaccharide LBPP (50, 100 and 200 mg/kg body weight) for 10 days. Tumor weight, relative spleen and thymus weight, lymphocyte proliferation, natural killer cell activity, delayed type hypersensitivity (DTH), phagocytic function of monocyte, serum hemolysis antibody and peripheral blood of tumor-bearing mice were studied. At the doses of 100 and 200 mg/kg, a significant decrease (P<0.01) in tumor formation, a significant increase (P<0.05) in relative spleen and thymus weight, natural killer cell activity, phagocytic function of monocyte, lymphocyte proliferation, and serum hemolysis antibody, and a significant improvement of peripheral blood abnormality (P<0.05) and anemia (P<0.01) were observed. Results of these studies demonstrated that the polysaccharide LBPP had anti-tumor activity, which was mediated by immunomodulation and leukogenic and antianemic actions.     

女贞子多糖抗肿瘤作用研究

目的探讨女贞子多糖(LLP)的抗肿瘤作用及机制。方法观察LLP对小鼠肉瘤(S180)、小鼠肝癌(H22)的抑制作用;采用MTT法观察LLP对人肝癌细胞(SMMC-7721)增殖的影响;ConA刺激T-淋巴细胞法研究LLP的免疫刺激作用。结果LLP对S180、H22实体瘤均有抑制作用(P<0.05);对SMMC-7721肿瘤细胞无直接杀伤作用,可提高Co-nA对T淋巴细胞刺激的转换率,提高由淋巴细胞YAC-1所致NK细胞的活性。结论LLP具有抗实体肿瘤的作用,LLP抗实体瘤的作用与其提高机体免疫,改善机体免疫能力而抑制肿瘤细胞生长有关。     

雄黄注射液体内外抗肿瘤作用研究

目的:初步探讨雄黄注射液的体内外抗肿瘤作用。方法:采用噻唑蓝(MTT)方法观察雄黄注射液对培养的人白血病细胞株K562,人肝癌细胞株HepG-2,人胃癌细胞株MGC-803,和小鼠Lewis肺癌细胞的增殖抑制作用;建立小鼠S180腹水型肉瘤模型,采用1、2、3mg/kg剂量雄黄注射液作用于小鼠模型,观察雄黄注射液体内抗肿瘤作用。结果:MTT法显示雄黄注射液对人白血病细胞株K562,人肝癌细胞株HepG-2,人胃癌细胞株MGC-803,和小鼠Lewis肺癌细胞增殖有一定的抑制作用;灌胃给予雄黄注射液对小鼠S180腹水型肉瘤生长有一定抑制作用。结论:雄黄注射液能够抑制培养的肿瘤细胞生长,灌胃给药对S180腹水型肉瘤细胞移植的模型小鼠肿瘤增殖有明显的抑制作用。     

Characterization and antitumor activity of pollen polysaccharide

The polysaccharide LBPP was extracted and isolated from the pollen of brassica napus L., and the antitumor activity was evaluated on Sarcoma 180-bearing mice and B16 melanoma-bearing mice through transplantable animal tumor. Mice were treated with three doses of the polysaccharide LBPP (50, 100 and 200 mg/kg body weight) for 10 days. Tumor weight, relative spleen and thymus weight, lymphocyte proliferation, natural killer cell activity, delayed type hypersensitivity (DTH), phagocytic function of monocyte, serum hemolysis antibody and peripheral blood of tumor-bearing mice were studied. At the doses of 100 and 200 mg/kg, a significant decrease (P<0.01) in tumor formation, a significant increase (P<0.05) in relative spleen and thymus weight, natural killer cell activity, phagocytic function of monocyte, lymphocyte proliferation, and serum hemolysis antibody, and a significant improvement of peripheral blood abnormality (P<0.05) and anemia (P<0.01) were observed. Results of these studies demonstrated that the polysaccharide LBPP had anti-tumor activity, which was mediated by immunomodulation and leukogenic and antianemic actions.     

蛇莓总酚的抗肿瘤作用及免疫学机制的初步探讨

目的探讨蛇莓[Duchesnea indica(Andr)Focke]有效部位蛇莓总酚(Duchesnea phenolic extract,DPE)的抗肿瘤作用及其免疫调节作用。方法体外实验采用MTT法测定肿瘤细胞(SKOV-3、HeLa、HEC-1B、NCI-H460、CNE、BGC-823)生长抑制率。体内实验采用小鼠U14移植瘤模型,采用MTT法和溶血素分光光度法,检测肿瘤抑制率、T淋巴细胞转化率和B淋巴细胞抗体量,分析其对小鼠体内抗肿瘤作用及免疫调节的关系。结果DPE以剂量依赖的方式抑制肿瘤细胞增殖,有明显的体内抗肿瘤作用。同时DPE可增强T细胞增殖和B细胞抗体分泌。结论DPE既可直接作用于肿瘤细胞,也可以通过提高机体细胞与体液免疫应答的水平而发挥体内抗肿瘤作用。