大剂量维生素E对脾脏T淋巴细胞亚类及MΦ诱生IL-1的影响

４组初断奶小鼠饲以含ＶＥ０、５０、１５０、１０００ｍｇ／ｋｇ饲料８周后，观察ＶＥ诱导脾脏Ｔ淋巴细胞特定亚群表面抗原分化的作用及对腹腔Ｍ诱生ＩＬ１的影响。实验结果表明：补充ＶＥ可提高脾脏指数，提高脾脏Ｔ细胞总数、ＣＤ４阳性细胞数，降低ＣＤ８阳性细胞百分率；大剂量补充ＶＥ（２０倍需要量）时，提高免疫反应的作用低于３倍需要量组，但未出现低于需要量组的反应。结果提示ＶＥ可提高ＣＤ４＋／ＣＤ８＋Ｔ细胞比值及诱导Ｍ产生ＩＬ     

维生素E对小鼠胸腺和脾脏T淋巴细胞转化及MΦ诱导IL－1的影响

ＶＥ缺乏组、１／３需要量组、需要量组、３倍需要量组、２０倍需要量组的初断奶小鼠喂养８周后观察Ｔ淋巴细胞转化及Ｍ中诱导ＩＬ－１反应。结果表明，ＶＥ增强半合适、合适剂量ＣｏｎＡ诱导的胸腺、脾脏Ｔ淋巴细胞转化，且半合适剂量诱导的反应高于合适剂量，ＶＥ增强合适剂量ＰＨＡ诱导的脾Ｔ细胞反应，但不影响其诱导胸腺Ｔ细胞反应。ＶＥ还提高ＭΦ诱导ＩＬ－１生成。上述实验以缺乏组反应最弱，３倍量组反应最强，而２０倍量组反有下降趋势。     

维生素E对小鼠胸腺、脾脏T淋巴细胞及亚群的影响

五组初断奶小鼠分别饲喂生育酚（ＶＥ）缺乏，合有Ｖｈ１／３、正常、３倍及２０倍需要量的膳食，８周后观察Ｔ淋巴细胞及亚群的变化。结果表明：补充ＶＥ后，小鼠脾脏指数显著增高，胸腺指数仅略有上升，并提高Ｔ细胞、Ｔ＿Ｈ亚群百分率，降低Ｔ＿ｓ亚群百分率，使Ｔ＿Ｈ／Ｔ＿ｓ比值增高。提示：ＶＥ刺激脾脏细胞增生更为显著，ＶＥ促进Ｔ细胞的成熟、分化。ＶＥ影响免疫反应的作用可能是通过提高Ｔ＿Ｈ／Ｔ＿ｓ比值而进行调节的。除２０倍需要量组外，饲料中ＶＥ重与Ｔ细胞及亚群的提高相关，认为３倍需要量为合适剂量。     

维生素E对小鼠胸腺和脾脏T淋巴细胞转化及Mφ诱导IL—1的影响

ＶＥ缺乏组、１／３需要量组、需要量组、３倍需要量组、２０倍需要组的初断奶小鼠喂养８周后观察Ｔ淋巴细胞转化及Ｍφ诱导ＩＬ－１反应。结果表明，ＶＥ增强半合适、合适剂量ＣｏｎＡ诱导的胸腺、脾脏Ｔ淋巴细胞转化，且半合适剂量诱导的反应高于合适剂量，ＶＥ增强合适剂量ＰＨＡ诱导的脾Ｔ细胞反应，但不影响其诱导胸腺Ｔ细胞反应。ＶＥ还提高Ｍφ诱导ＩＬ－１生成。上述实验以缺乏组反应最弱，３倍量组反应最强，而２０倍量组反     

缺生贫血合并反复呼吸道感染患儿细胞免疫功能检测

目的 测定６３例缺铁性贫血（ＩＤＡ）合并反复呼吸道感洒患儿外周血白细胞介素２（ＩＬ－２）活性、血清可溶性白介素２受体（ｓＩＬ－２Ｒ）以及Ｔ淋巴细胞亚群，并分析他们之间的相关性。方法 Ｔ淋巴亚群测定采用ＡＰＡＡＰ法、ＩＬ＿２活性测定采用ＭＴＴ比色法，ｓＩＬ－２Ｒ测定采用单抗与多抗双抗体夹心法。结果 ＩＬ－２活性、ＣＤ３、ＣＤ４、ＣＤ４／ＣＤ８显著低于对照组，而ＳＩＬ＿２Ｒ水平显著高于对照组，ＣＤ８无     

维生素A缺乏对大鼠细胞免疫功能的影响

方法：初断乳ＳＤ大鼠２４只，均分为严重ＶＡ缺乏（Ａ）、轻度ＶＡ缺乏（Ｂ）和正常对照（Ｃ）三组，饲含ＶＡ０、４００、６００ＩＵ／ｋｇ饲料８周，测定大鼠外周血淋巴细胞转化、Ｔ细胞亚群及单个核细胞ＩＬ－２，ＴＮＦ－α变化。结果：重度ＶＡ缺乏会导致大鼠胸腺和脾脏的萎缩，ＣＤ３、ＣＤ４亚群减少，ＣＤ４／ＣＤ８下降，淋巴细胞转化受抑，单个核细胞分泌ＩＬ－２、ＴＮＦ－α明显减少；轻度ＶＡ缺乏时，虽无明显临床表现，但ＣＤ４、ＣＤ４／ＣＤ８有所降低，ＩＬ－２及ＴＮＦ－α亦分泌减少。结论：轻度ＶＡ缺乏和严重ＶＡ缺乏均会使细胞免疫功能受损，需引起重视     

选择性IgA缺乏症的部分细胞因子研究

为探讨白细胞介素及白细胞介素受体在选择性ＩｇＡ缺乏症发过程中的作用，我们采用间接免疫荥光技术ＥＬＩＳ夹心法及细胞培养，分别对１５例患儿及对照组进行了Ｔ细胞亚群，Ｔａｃ阳性细胞（ｍＩＬ－２Ｒα）百分率，ＳＩＬ－２Ｒ及ＩＬ－４含量检测，发现ＳＩｇＡＤ患儿Ｔａｃ阳性细胞（ｍＩＬ－２Ｒα百分率及血清ＳＩＬ－２Ｒ明显高于对照组，ＣＤ４，ＣＤ４／ＣＤ８，ＩＬ－４水平则显著低于对照组，表明血清ＳＩＬ－２Ｒα异常     

富硒香菇活性多糖对实验大鼠免疫缺陷干预及其影响因素研究

为证明含富硒香菇多糖（Ｓｅ－ＬＥＮ）对大鼠免疫调节及Ｔ细胞亚群增殖的提升作用。通过建立免疫缺陷 Ｓｅ－ＬＥＮ干预。采用流式细胞术观察Ｔ细胞亚群等的变化。结果表明：干预组对淋巴细胞、ＣＤ３＋、ＣＤ４＋的增殖有明显的促进作用,脾指数、胸腺指数明显增加。１／５常剂量组上述结果低于对照,接近模型组,促进ＬＹＭ增殖的起始时间于干预１周后即可产生,提示：Ｓｅ－ＬＥＮ具有增强细胞免疫调节功能,显著地促进ＣＤ４＋     

先天性佝偻病儿外周血T淋巴细胞亚群及sIL—2R的变化

目的 研究先天性佝偻病的免疫功能。方法 测定２８例患儿Ｔ淋巴细胞亚群，血清免疫球蛋白的白介－Ⅱ受体（ｓＩＬ－２Ｒ）的水平。结果 先天性佝偻病肺炎组血ＩｇＧ、ＩｇＡ、ＩｇＭ及外周血ＣＤ４、ＣＤ４／ＣＤ８水平显著显著低于单纯肺炎组及对照组。Ｐ均〈０．０５；先天性佝偻病肺一与单纯肺炎组ＳＩＬ－２Ｒ含量比较无显著性差异。结论 先天性佝偻病患儿存在免疫功能紊乱。     

细胞免疫状态与慢性乙肝临床类型及HBVM模式的关系研究

本文对慢性乙型肝炎患者外周血中Ｔ淋巴细胞亚群水平进行了研究。结果表明，与对照组相比，慢性乙肝患者外周血Ｔ淋巴细胞ＣＥ３％＝，ＣＤ＾＋４明显下降，而ＣＤ＾＋８增高及ＣＤ＾＋４／ＣＤ＾＋８比值下降尚未达到显著性水平，进一步分析结果提示，慢性乙肝患者外周血Ｔ淋巴细胞亚群的这种变化仅与机体是否感染ＨＢＶ有密切关系，而与机体感ＨＢＶ后所表现的临床类型，免疫反应产生的ＨＢＶＭ组合模式以及ＨＢＶ在体内复制的活跃     

Effect of 50- and 100-mg vitamin E supplements on cellular immune function in noninstitutionalized elderly persons.

BACKGROUND: It has been suggested that vitamin E can counteract the age-associated decline in cellular immune responsiveness (CIR). Particularly, T helper cell type 1 (Th1) activity, ie, interferon (IFN) gamma-producing Th1 activity and, hence, delayed-type hypersensitivity (DTH) would be enhanced by vitamin E supplementation. OBJECTIVE: Our aim was to study the effects of 6 mo supplementation with 50 and 100 mg vitamin E on CIR in the elderly. DESIGN: A double-blind, placebo-controlled trial was conducted in 161 healthy elderly subjects aged 65-80 y. CIR was measured in vivo by means of DTH skin tests and in vitro by assessing the production of interleukin (IL) 2, IFN-gamma (a typical Th1 cytokine), and IL-4 (a typical Th2 cytokine) by peripheral blood mononuclear cells after stimulation with phytohemagglutinin. RESULTS: Both DTH and IL-2 production showed a trend toward increased responsiveness with increasing dose of vitamin E. However, IFN-gamma production decreased whereas IL-4 production increased in the groups receiving vitamin E. Only the change in the number of positive DTH reactions was borderline significantly larger in the 100-mg vitamin E group than in the placebo group (P = 0.06, Bonferroni adjusted). Subjects receiving 100 mg vitamin E with low baseline DTH reactivity or who were physically less active had a significantly larger increase in the cumulative diameter of the skin induration resulting from the DTH test than did the placebo group (P = 0.03), although this difference was not significant after Bonferroni correction (P = 0.07). CONCLUSION: Possible beneficial effects of 100-mg vitamin E supplementation may be more pronounced in particular subgroups of elderly subjects.     

维生素A、E辅助药物治疗儿童反复呼吸道感染的疗效及免疫状态分析

目的分析维生素A、E辅助药物治疗儿童反复呼吸道感染的疗效及免疫状态。方法选择2016年3月-2018年1月就诊的100例儿童反复呼吸道感染患儿,根据随机双盲法进行分组。对照组50例,单用匹多莫德治疗;研究组50例,在匹多莫德治疗基础上加用维生素A、E辅助治疗,均治疗3周。比较两组临床疗效、治疗相关指标、不良反应,并观察治疗前、治疗3周后T淋巴细胞亚群、免疫球蛋白及维生素A、E水平变化。结果研究组治疗总有效率比对照组高(P<0. 05)。研究组治愈时间、感染持续时间比对照组短,感染次数比对照组低(均P<0. 05)。治疗3周后,研究组CD3^+T淋巴细胞亚群水平比对照组高,CD4^+T淋巴细胞亚群、CD8^+T淋巴细胞亚群水平比对照组低(均P <0. 05),IgA、IgG、IgM水平比对照组高(均P <0. 05),维生素A、E水平比对照组高(均P<0. 05)。两组治疗前后T淋巴细胞亚群、免疫球蛋白水平及维生素A、E水平比较差异均有统计学意义(均P<0. 05)。两组不良反应发生率比较差异无统计学意义(P>0. 05)。结论维生素A、E辅助药物治疗儿童反复呼吸道感染疗效确切,可降低患儿疾病复发次数,缩短病程,调节细胞及体液免疫功能,加强机体抗病能力,且安全性较高,利于获得良好预后。     

早发型子痫前期患者维生素A、维生素E、辅助性T细胞水平及相关危险因素分析

目的:观察早发型子痫前期(PE)患者维生素A、维生素E及辅助性T细胞的变化,分析相关危险因素。方法:收集2016年12月-2018年5月本院正常妊娠孕妇2650例,早发型子痫前期孕妇350例。取所有孕妇外周静脉血,检测维生素A、维生素E、辅助性T细胞水平,分析可能影响早发型子痫前期因素。结果:子痫前期组孕妇血清维生素A(0.24±0.15mg/L)、维生素E(4.92±2.31mg/L)低于正常组(0.47±0.18mg/L、10.75±4.57 mg/L),血液中Th(21.01±3.96%)、Th1/Th2(20.41±5.75)高于正常组(12.31±2.50%、7.93±1.46),Th2(1.04±0.17%)低于正常组(1.60±0.29%)(均P<0.05)。多胎妊娠、年龄≥35岁、有内科合并症、维生素E缺乏、产前体质指数异常是早发型子痫前期发病的独立危险因素。结论:早发型PE孕妇体内维生素A、维生素E缺乏,且机体免疫平衡出现紊乱,多胎妊娠、年龄≥35、有内科合并症、维生素E缺乏、产前体质指数异常为早发型PE的危险因素,在临床应予以重视。     

苦瓜皂甙对衰老小鼠免疫功能的影响

目的 :　探讨苦瓜皂甙对衰老小鼠免疫功能的影响。方法 :　 1 5 mo雌性昆明小鼠 ,随机分为老年对照组 ( SC)、实验 组 ( E1 )、实验 2组 ( E2 ) ,SC饮用自来水、E1、E2两组分别饮含有1 0 0 mg/L和 2 0 0 mg/L的苦瓜皂甙水。饲养 5 w后 ,处死动物 ,取标本待测。同时制备衰老小鼠脾细胞、腹腔巨噬细胞、胸腺细胞 ,分别加入不同浓度的苦瓜皂甙 ( 2 5 mg/L和 5 0 mg/L) ,培养后待测。结果 :　苦瓜皂甙不影响脾脏指数 ,但胸腺指数有升高趋势 ,实验组吞噬指数、血清 IL- 2水平明显升高 ,且 E2高于 E1 ( P<0 .0 5 )。苦瓜皂甙能明显增加胸腺中 CD8+ - T细胞数 ,显著降低胸腺和脾脏中 CD+ CD8+ 双阳性 T细胞数。体外实验表明 ,苦瓜皂甙不但可促进脾脏分泌 IL - 2 ,还可显著增强腹腔巨噬细胞分泌 TNFα,但不影响胸腺细胞凋亡百分率。结论 :　苦瓜皂甙可通过改变 T细胞各亚群比例 ,促进 IL- 2分泌 ,增强吞噬指数 ,提高衰老小鼠免疫功能。     

Opposite effects of low and high dose supplementation of vitamin E on survival of MRL/lpr mice

OBJECTIVE: The purpose of this study is to investigate the effects of vitamin E supplementation on the autoimmune disease course in MRL/lymphoproliferative mice. METHODS: Three-month-old MRL/lymphoproliferative lpr female mice were fed an AIN-76 diet containing 50 mg/kg (control), 250 mg/kg (E5), 375 mg/kg (E7.5), or 500 mg/kg (E10) all-rac-alpha-tocopheryl acetate. Eight mice per group were killed for analysis after two months of experimental diets, and the rest of the mice were followed up to observe their proteinuria levels and life span. RESULTS: The data suggest that the life span of the E5 group was longer than the E10 group. Though alpha-tocopherol content in the plasma, liver, and kidneys increased in the mice fed the diet supplemented with vitamin E, the thiobarbituric acid reactive substance values in the liver and kidneys among these groups were not significantly different. IgM anti-ds-DNA and anticardiolipin antibodies were significantly higher in the E10 group than in those of the other groups. Phytohemagglutinin-stimulated interleukin (IL)-2 secretion was significantly lower, but concanavalinA-stimulated IL-4 and IL-10 production was significantly higher in the E10 group compared with the control group. The in vitro study also showed decreased IL-2 secretion and messenger RNA expression in phytohemagglutinin-stimulated splenocytes cultured in medium supplemented with high doses of vitamin E, but increased IL-2 with low doses of vitamin E. CONCLUSIONS: Our data suggest that low and high dose supplementation of vitamin E has the opposite effect on the survival of MRL/lpr mice. The inhibitory effect of Th1 from high vitamin E content may not be beneficial for those suffering from Th2 prone autoimmune diseases, such as systemic lupus erythematosus.     

Vitamin E, vitamin B-6, vitamin B-12, and folate status of gastric bypass surgery patients

The vitamin E, vitamin B-6, vitamin B-12, and folate status of 22 gastric bypass subjects aged 23 to 60 years was evaluated before surgery and at 6 and 12 months after surgery. Before surgery, 77% of subjects had adequate plasma vitamin E levels; 36%, adequate plasma pyridoxal phosphate levels; 100%, adequate plasma vitamin B-12 levels; and 45%, adequate plasma folate levels. The food intake of all subjects was sharply reduced after surgery. After surgery, subjects were classified into three vitamin supplement groups on the basis of average daily vitamin supplement intake. Subjects taking higher levels of supplements containing the vitamins in question had significantly higher plasma concentrations of the vitamins than those taking low or moderate levels. The mean plasma vitamin values in the moderate supplement group were indicative of adequate status for all vitamins, but plasma vitamin B-12 levels at 12 months post-surgery were significantly lower than pre-surgery levels. In the low supplement group, mean plasma vitamin levels were in or near marginal or deficient ranges. The majority of subjects consuming supplements of vitamin E, vitamin B-6, and folate near the US RDA maintained normal vitamin status. Subjects taking more than 100 micrograms vitamin B-12 daily had adequate vitamin B-12 status. Significant correlations (r = .67 to .94) were observed between vitamin supplement levels and the respective plasma vitamin concentrations.     

艾迪注射液对大肠癌术后化疗患者免疫功能的影响

目的探讨艾迪注射液对大肠癌术后化疗患者免疫功能的影响。方法将60例大肠癌术后患者随机分成2组,对照组给予FOLFOX4方案化疗,实验组也给予FOLFOX4方案化疗,同时加用艾迪注射液50 ml+生理盐水500 ml治疗,共10 d。采用流式细胞仪测定治疗前后外周血T淋巴细胞亚群(TT、Th、Ts、Th/Ts)和NK细胞。结果实验组外周血TT、Th、Ts、NK细胞数量及Th/Ts细胞比值较化疗前无显著性差异(p>0.05),对照组外周血TT、Th、NK细胞数量及Th/Ts细胞比值较化疗前显著下降(p<0.05),Ts细胞水平显著升高(p<0.05)。化疗后实验组外周血TT、Th、NK细胞数量及Th/Ts细胞比值均较对照组显著性升高(p<0.05),Ts细胞数量较对照组显著下降(p<0.05)。结论艾迪注射液能改善大肠癌术后化疗患者的免疫功能。     

Breath ethane and pentane as measures of vitamin E protection of Macaca radiata against 90 days of exposure to ozone.

Bonnet monkeys, Macaca radiata, were exposed to 0, 0.5, or 0.8 ppm of O₃ for 7 days (one/group), 28 days (two/group) or 90 days (three/group). Ethane and pentane, hydrocarbon gases that derive from decomposition of ω3- and ω6-fatty acid hydroperoxides, respectively, were measured in expired breath within 2–3 hr following the exposures. There were no significant differences in the levels of ethane and pentane produced by the monkeys in the three O₃-concentration groups or in the three exposure-time groups as would be expected had not vitamin E provided protection. Blood plasma and lung tissue vitamin E levels were 0.69 ± 0.34 mg/100 ml and 1.42 ± 0.48 mg/100 g wet wt, respectively. Analysis of the diet showed that the monkeys were consuming 85 mg of vitamin E/kg of diet, a level about eight times the minimum requirement based upon linoleic acid content of the diet. It was concluded that this high dietary level of vitamin E provided ample protection against O₃-induced lipid peroxidation in the lungs.