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1.
试验旨在探讨牛磺鹅去氧胆酸（taurochenodxycholic acid, TCDCA）对小鼠外周血和脾脏中T淋巴细胞亚群和B淋巴细胞的影响。试验采用流式细胞仪测定各处理组小鼠外周血和脾脏中用CD3+、CD3+CD4+ 、CD3+CD8+标记的T淋巴细胞百分率和CD19+标记的B淋巴细胞百分率。 结果表明,与空白对照组比较,高剂量（0.20 g/kg）TCDCA组、低剂量（0.10 g/kg）TCDCA组、CsA+高剂量（0.20 g/kg）TCDCA组和CsA+低剂量（0.10 g/kg）TCDCA组小鼠脾脏中的CD4+/CD8+的比值均得到极显著提高;与环孢素A组相比,CsA+高剂量（0.20 g/kg）TCDCA组和CsA+低剂量（0.10 g/kg）TCDCA组小鼠外周血中的CD3+CD4+、CD3+ T淋巴细胞的百分率和脾脏中CD3+ T淋巴细胞百分率显著提高。因此,TCDCA通过提高机体中CD3+ T淋巴细胞的百分率和调整CD4+/CD8+之间的平衡来显著提高小鼠机体的免疫功能和恢复由环孢素抑制的小鼠机体免疫力。 相似文献
2.
为研究从碎米花杜鹃叶中分离得到的化合物原花青素A-1（Proanthocyanidin A-1，简称PAA-1）的免疫增强活性，初步从细胞水平上探讨其免疫增强机制。体外试验采用流式细胞术，检测PAA-1体外对小鼠脾淋巴细胞T细胞亚群CD4和CD8单阳性和双阳性T淋巴细胞亚群百分率及CD4+/CD8+比值；体内试验通过饲喂不同剂量的PAA-1后，检测试验猪外周血淋巴细胞CD4和CD8单阳性以及CD4+/CD8+比值。结果证明，体外试验中同阴性对照组相比，PAA-1能单独或协同Con A提升具CD4+、CD8+及CD4+CD8+表型的T淋巴细胞亚群百分率，提高CD4+/CD8+的比值；体内试验中饲喂中、高剂量的PAA-1的试验猪外周血中具有CD4+、CD8+表型的T淋巴细胞的百分率及CD4+/CD8+的比值均有显著提高。说明PAA-1可通过增加辅助性T淋巴细胞和细胞毒性T淋巴细胞数量、促进T淋巴细胞的成熟以及增加CD4+/CD8+的比值发挥增强细胞免疫的作用，为其进一步开发为新型免疫增强剂提供试验依据。 相似文献
3.
目的:观察甘氨胆酸(Glycocholic acid,GCA)对正常及免疫抑制小鼠免疫功能的影响。方法:应用环磷酰胺或环孢菌素A所致的免疫抑制模型;采用ELISA及比色法观察了GCA对体液免疫的影响,碳廓清法测定了GCA对单核巨噬细胞的吞噬功能的影响,迟发型皮肤变态反应法观察了GCA对二硝基氯苯丙酮溶液所致小鼠迟发型皮肤过敏反应的影响,并测定了血清中IL-2、TNF-α的含量。采用流式细胞术检测了GCA对小鼠外周血T细胞亚群CD4、CD8比例的影响。结果:GCA能够显著增强正常及抑制小鼠的IgMI、gG的含量;增加外周血中T淋巴细胞CD4比例,使CD4 /CD8 比值提高;显著抑制迟发型皮肤变态反应的发生,并增加IL-2及TNF-α的含量。结论:GCA能够显著提高非特异性免疫功能;显著增强机体的体液免疫能力;显著抑制迟发型变态反应,增强正常及CsA抑制小鼠CD4 百分率、CD4 /CD8 比值,GCA具有调节机体免疫功能的作用。 相似文献
4.
为探讨牛磺鹅去氧胆酸(taurochenodeoxycholic acid,TCDCA)对热应激小鼠免疫功能的调节作用,试验将50只小鼠随机分成5组,分别为对照组、热应激组和低、中、高剂量TCDCA组(剂量分别为50、100、200 mg/kg)。热应激组和低、中、高剂量TCDCA组小鼠置于(35.5±0.5) ℃、相对湿度60%环境下连续热应激7 d。结束后分别检测小鼠脾脏指数、血清IgG、小肠sIgA的含量及外周血T淋巴细胞亚群和B淋巴细胞的变化。结果表明,热应激引起小鼠脾脏指数显著下降(P＜0.05),血清IgG、肠sIgA显著升高(P＜0.05),外周血CD8+、CD19+百分率显著下降(P＜0.05),CD4+百分率下降不显著(P＞0.05),CD4+/CD8+比值显著升高(P＜0.05),表明热应激导致小鼠机体免疫功能发生紊乱。TCDCA对热应激小鼠脾脏指数无显著影响;但能显著抑制热应激引起的血清IgG含量、小肠sIgA含量升高(P＜0.05)和显著提高外周血CD8+、CD19+百分率(P＜0.05),同时能够调节CD4+/CD8+ 比值到正常水平。因此,TCDCA对热应激导致的小鼠免疫功能紊乱具有显著的改善作用。 相似文献
5.
枸杞多糖和茯苓多糖对免疫抑制小鼠免疫增强及对肠道黏膜的免疫调节作用 总被引：1，自引：0，他引：1
研究比较枸杞多糖和茯苓多糖对免疫抑制小鼠的系统免疫功能的影响及2种多糖对肠道黏膜免疫系统的调节作用,通过腹腔注射环磷酰胺建立小鼠免疫抑制模型,观察小鼠脾脏器官指数变化、腹腔巨噬细胞吞噬功能、流式细胞术检测小鼠脾脏T细胞亚群CD4+/CD8+比例及肠派氏结CD3+、CD19+细胞比例、ELISA检测血清及小肠组织中IL-12、IL-4、IFN-γ细胞因子水平变化评价2种多糖对免疫抑制小鼠免疫功能及肠道黏膜的影响。结果显示,2种多糖可提高免疫抑制小鼠脾脏指数,增强腹腔巨噬细胞吞噬功能,影响免疫抑制小鼠CD4+/CD8+细胞亚群比例及肠派氏结T、B淋巴细胞比例和细胞因子水平。结果表明,枸杞和茯苓多糖均对免疫抑制小鼠具有免疫增强作用,茯苓多糖的免疫调节效应显著优于枸杞多糖,且2种多糖均对肠道黏膜免疫系统具有调节作用。 相似文献
6.
石菖蒲对LPS致流产小鼠的保胎作用及子宫免疫细胞的影响 总被引：1，自引：0，他引：1
为研究CD4+/CD8+T淋巴细胞和F4/80+巨噬细胞在流产发生机制中的意义,探讨中药石菖蒲的安胎作用机理,本试验选用细菌脂多糖(LPS)给小鼠尾静脉注射(0.1μg/只)制造流产模型,免疫组织化学方法检测小鼠子宫中CD4+,CD8+T淋巴细胞和F4/80+巨噬细胞的数量和分布情况.结果显示,应用LPS诱导流产后小鼠子宫中CD4+T淋巴细胞数量增多,CD8+T淋巴细胞数量无明显变化,CD4+/CD8+升高(P<0.01);F4/80+巨噬细胞数量也显著增多,与对照组比较差异极显著(P<0.01).预先口服保胎中药石菖蒲,能明显抑制LPS的作用,使小鼠流产率和胚胎吸收率降低,CD4+/CD8+比值降低,F4/80+巨噬细胞数量也降低.结果表明,LPS诱导小鼠流产与小鼠子宫中CD4+/CD8+比值和巨噬细胞数量有关,石菖蒲能调节小鼠子宫CD4+/CD8+T淋巴细胞和巨噬细胞数量,起到安胎作用. 相似文献
7.
采用80 mg/kg剂量的地塞米松对小鼠进行腹腔注射制备免疫抑制小鼠模型;牛磺鹅去氧胆酸(Taurochenodeoxycholic acid,TCDCA)设计了0.05、0.10、0.20 g/kg低、中、高3个给药剂量对小鼠灌胃给药;检测免疫器官质量,碳粒廓清法检测单核-巨噬细胞吞噬功能,流式细胞术检测外周血CD4+和CD8+细胞亚群百分率及CD4+与CD8+的比值,ELISA检测血清中IgG的含量.结果显示:模型小鼠和正常小鼠相比较,脾指数、单核-巨噬细胞吞噬功能、CD4+和CD8+亚群百分率及血清IgG含量均极显著降低(P＜0.01),说明地基米松制备的小鼠模型免疫功能极显著低下.给药组与模型组相比较,TCDCA的3个剂量组对小鼠脾指数均无显著影响(P＞0.05);低剂量组和中剂量组极显著增强单核-巨噬细胞系统吞噬功能(P＜0.01);3个剂量组均显著提高外周血中CD4+细胞百分率(P＜0.05),中剂量组显著提高CD4-与CD8-的比值(P＜0.05);低剂量纽和中剂量组显著提高小鼠血清中IgG含量(P＜0.05).结果表明,TCDCA对糖皮质激素免疫抑制小鼠的非特异性免疫和特异性细胞免疫、体液免疫功能具有恢复作用,但对脾脏萎缩无恢复作用. 相似文献
8.
中药复方连翘对感染法氏囊病毒雏鸡免疫功能的影响 总被引：8，自引：0，他引：8
160只7日龄健康岭南黄鸡随机分为Ⅰ、Ⅱ、Ⅲ和Ⅳ组,每组40只,Ⅰ为正常对照组、Ⅱ为感染病毒组、Ⅲ为中药复方治疗组、Ⅳ为中药复方制剂组,Ⅱ、Ⅲ组均于8日龄感染传染性法氏囊病毒（IBDV）,Ⅲ、Ⅳ以20g·kg^-1单剂量灌服中药复方连翘汤。分别于试验后第7、14、21、28日龄采外周血及免疫器官法氏囊和脾脏,测定血细胞的吞噬能力、外周血T淋巴细胞的百分率和T淋巴细胞的转化率,流式细胞仪测定鸡外周血和脾T淋巴细胞亚群CD3^＋、CD4^＋和CD8^＋T细胞的含量;放血致死称体质量、脾和法氏囊质量,计算免疫器官指数。在感染IBDV7d后取脾脏和法氏囊组织,制备组织样品进行组织学及透视电镜观察。结果表明：中药复方连翘制剂可使雏鸡外周血细胞的吞噬能力、T淋巴细胞的百分率和T淋巴细胞的转化率、法氏囊和脾脏的质量明显提高,对感染IBDV后免疫器官法氏囊和脾脏有明显的改善和恢复作用,提高外周血和脾淋巴细胞中CD3^＋、CD4^＋和CD8^＋T细胞百分率,改变CD4^＋／CD8^＋比值促进对机体免疫系统的调控。感染病毒组的上述指标显著下降,中药复方连翘治疗组与感染病毒组相比能显著提高上述指标。 相似文献
9.
10.
为了研究桦木酸对小鼠淋巴细胞和巨噬细胞的影响.从白桦树皮中提取桦木醇,经琼斯试剂氧化制备中间产物桦木酮酸后,用硼氢化钠还原合成桦木酸;取6周龄KM小鼠168只,随机分为4组,按0、0.25、0.5和1 mg·kg-1体质量连续灌胃14 d,检测桦木酸对淋巴细胞的增殖,脾和胸腺淋巴细胞亚群以及脾淋巴细胞的溶血空斑数和巨噬细胞的吞噬能力的影响.结果表明,桦木酸能提高小鼠的免疫器官指数,协同促进ConA或LPS诱导的小鼠脾脏T淋巴细胞或B淋巴细胞的增殖活性,提高胸腺淋巴细胞CD4+百分率,脾淋巴细胞的CD19+百分率以及CD4+/CD8+的百分比;桦木酸增加SRBC免疫小鼠溶血空斑数,还能显著增强腹腔巨噬细胞吞噬中性红的能力.结果提示,桦木酸具有一定的免疫调节作用,对小鼠的细胞免疫、体液免疫功能和非特异免疫有明显的增强作用. 相似文献
11.
The effects of florfenicol on lymphocyte subsets and humoral immune response in mice 总被引：2，自引：0，他引：2
Lis M Szczypka M Suszko A Switała M Obmińska-Mrukowicz B 《Polish journal of veterinary sciences》2011,14(2):191-198
Florfenicol is a broad-spectrum bacteriostatic antibiotic used in domestic animals. The aim of the study was to determine the effect of florfenicol on the total number of lymphocytes in the thymus, spleen and mesenteric lymph nodes and the percentage and the absolute number of T cell subsets (CD4+CD8+, CD4-CD8-, CD4+, CD8+) in the thymus and T (CD3+, CD4+, CD8+) and B (CD19+) lymphocytes in the peripheral lymphatic organs in non-immunized mice and humoral immune response in sheep red blood cells (SRBC)-immunized mice. Florfenicol was administered orally at a dose of 30 mg/kg six times at 24 h intervals to non-immunized mice and four or seven times at 24 h intervals to SRBC-immunized mice. SRBC was injected 2 hours prior to the first dose of the drug. Florfenicol increased the percentage of CD4CD8- thymocytes and the absolute number of CD4+ and CD8+ thymocytes on day 7. The increased percentage and absolute number of CD3+, CD4+ and CD8+ lymphocytes in mesenteric lymph nodes and decreased percentage of lymphocytes B were also observed 24 hours from the last administration of florfenicol. Florfenicol administered after SRBC immunization reduced the number of plaque forming cells (PFC) and the production of anti-SRBC antibodies on days 4 and 7 after priming. 相似文献
12.
Influence of betulinic acid on lymphocyte subsets and humoral immune response in mice 总被引：1，自引：0，他引：1
Jine Y Lis M Szczypka M Obmińska-Mrukowicz B 《Polish journal of veterinary sciences》2012,15(2):305-313
Betulinic acid is a pentacyclic triterpene found in many plant species, among others, in the bark of white birch Betula alba. Betulinic acid was reported to display a wide range of biological effects, including antiviral, antiparasitic, antibacterial, anticancer and anti-inflammatory activities. The effects of betulinic acid (50, 5, 0.5 mg/kg) administered orally five times at 24 hours intervals to non-immunized and red blood cells (SRBC)-immunized mice were determined. The present study examined the total number of lymphocytes in the thymus, spleen and mesenteric lymph nodes, and the percentage of subsets of T cells (CD4+CD8+, CD4CD8, CD4+, CD8+) in thymus,T (CD3+, CD4+, CD8+) and B (CD19+) lymphocytes in the spleen and mesenteric lymph nodes, as well as white blood cell (WBC) and differential leukocyte counts in non-immunized mice, and humoral immune response in SRBC-immunized mice. SRBC was injected 24 hours after administration of the last dose of betulinic acid. It was found that betulinic acid administered orally five times at the dose of 0.5 mg/kg increased the total number of thymocytes, splenocytes, lymphocytes of mesenteric lymph node cells, and the weight ratio of the spleen and mesenteric lymph nodes in non-immunized mice. Betulinic acid also changed the percentage of T cell subsets in the thymus and T and B lymphocytes in peripheral lymphatic organs. The effects of betulinic acid on T and B cell subpopulations depended on the dose applied. The strongest stimulating effect of betulinic acid was observed when the drug was administered at the dose of 0.5 mg/kg. Five exposures to betulinic acid (0.5 mg/kg) decreased the percentage of immature CD4+CD8+ thymic cells with corresponding increases in the percentage and absolute count of mature, single-positive CD4+ thymocytes and decreased the percentage and total count of CD3+ splenocytes and mesenteric lymph node cells with corresponding decreases in the percentage and absolute count of CD4+ and CD8+ cells. Multiple administration of betulinic acid at the investigated doses augmented the percentage and absolute count of CD19+ cells in the peripheral lymphatic organs. Moreover, betulinic acid at the dose of 5 mg/kg administered prior to SRBC immunization increased the number of plaque forming cells (PFC) but decreased the production of anti-SRBC antibodies on day 4 after priming. Thus, betulinic acid is a potential biological response modifier and may strengthen the immune response of its host. 相似文献
13.
Lis M Szczypka M Suszko A Obmińska-Mrukowicz B 《Polish journal of veterinary sciences》2011,14(3):393-403
Bestatin, a low-molecular weight dipeptide, is a potent inhibitor of aminopeptidase N which has been demonstrated to have antitumor and immunomodulatory effects. The effects of bestatin (10, 1 and 0.1 mg/kg) administered intraperitoneally once, five or ten times to mice on the total number of lymphocytes in the thymus, spleen and mesenteric lymph nodes and the percentage and the absolute number of T cell subsets (CD4+CD8+, CD4-CD8-, CD4+, CD8+) in the thymus and T (CD3+, CD4+, CD8+) and B (CD19+) lymphocytes in the spleen and mesenteric lymph nodes were studied. It has been found that bestatin administered ten times at doses of 10, 1 and 0.1 mg/kg increased the total number of thymocytes, splenocytes and lymphocytes of mesenteric lymph nodes. Bestatin also changed the percentage and the absolute number of T cell subsets in the thymus and T and B lymphocytes in the peripheral lymphatic organs. Five and ten exposures to bestatin (10, 1 and 0.1 mg/kg) increased the absolute count of both immature CD4+CD8+ and CD4-CD8- thymic cells. Moreover, both a single and multiple administration of bestatin (1 and 0.1 mg/kg) decreased the percentage and absolute count of CD3+ splenocytes and mesenteric lymph node cells with corresponding decreases in the percentage and absolute count of CD4+ and CD8+ cells. Both a single and multiple administration of bestatin at all the doses under investigation augmented the percentage and the absolute count of CD19+ (B lymphocytes) in the peripheral lymphatic organs. The results of the study show that there is a relationship between the effect induced by bestatin and the dose of the drug as well as the number of doses applied. The strongest effect on the T and B lymphocyte subsets was noted after five injections of bestatin at doses of 1 and 0.1 mg/kg. 相似文献
14.
The aim of this study was to investigate changes in selected parameters of cellular immune response in the conditions of endotoxin fever and pyrogenic tolerance in pigeons. On the first day of observation the experimental birds (n = 18) were intravenously injected with Escherichia coli LPS at a dose of 10 microg/kg b.w., while the control animals (n = 6) received apyrogenic physiological saline also in the form of injection. On the second and the third day of the experiment LPS was injected additionally at 24 h intervals. Four and a half hours after the saline and pyrogen administration blood samples were collected from the control and experimental pigeons. The following immunological assays were performed: WBC, leucogram and immunophenotyping of lymphocyte subsets in peripheral blood, i.e. CD 3+ (T lymphocytes), CD 4+ (T helper lymphocytes) and CD 8+ (T suppressor/cytotoxic lymphocytes) cells. In the conditions of endotoxin fever (i.e. after the first LPS injection) leucopenia, monocytopenia, heterophilia and eosinophilia were observed. Additionally, the immunophenotyping of peripheral blood lymphocytes indicated an increase in percentage of CD 3+, CD 4+ and CD 8+ cells in response to the single injection of LPS. In contrast, the consecutive injections of LPS, which created a pyrogenic tolerance effect, caused a decrease in WBC value, heteropenia, eosinopenia and lymphocytosis. Moreover, during this state an increase in percentage of CD 3+ and CD 8+ cells was demonstrated in contrast to the percentage of CD 4+ lymphocytes. The general tendencies in cellular immune response of the affected pigeons in the conditions of endotoxin fever and pyrogenic tolerance aim at activation of defence mechanisms against LPS for its prompt elimination from the animal's organism. 相似文献
15.
Slight differences in the results of papers describing lymphocyte subsets distribution in the peripheral blood of healthy dogs may be explained by differences in monoclonal antibody clones and sources, breed and age of animals examined, methods of sample treatment, or methods of result analysis. In this paper, we described the effect of sample processing and of sample storage as well as the effect of age, breed, and gender of dogs on lymphocyte subset distribution. No significant differences were found between samples processed following a whole-blood lysis method and samples processed after density gradient separation. Furthermore, no significant differences were found between samples processed within 2h after collection and those stored at 4 degrees C for 12-16 h before processing. Age-related changes were evident in lymphocyte subset distribution in the peripheral blood of 38 Beagles divided according to their age into the six groups: (1) 5-6 days; (2) 2 months; (3) 6 months; (4) 1-2 years; (5) 3-5 years; and (6) >5 years. The percentage of B-lymphocytes (CD21-like positive cells) in the peripheral blood of newborn pups was 39.5+/-5.7 and decreased with advancing age. The percentage of CD8+ lymphocytes was 7.7+/-3.4 after birth and increased with advancing age. No age-related changes were observed in the percentages of CD4+ lymphocytes. The CD4+:CD8+ ratio decreased with advancing age. No significant age-related change was observed for lymphocytes bearing the gammadelta-TCR. Some breed differences were evident. Adult (1-5-year-old) Beagles, German Shepherds, Dalmatians, and Dachshunds were examined. The percentages of lymphocytes were higher in Beagles and Dachshunds than in Dalmatians and German Shepherds. The highest and the lowest absolute lymphocyte counts were found in Beagles and German Shepherds, respectively. As a consequence, German Shepherds showed the lowest absolute counts of the individual lymphocyte subpopulations and the widest neutrophil:lymphocyte ratio. Dalmatians showed the lowest percentage of CD3+ cells, the highest percentage of CD21+ cells, and the lowest CD4+:CD8+ ratio. German Shepherds showed the lowest percentage of CD21+ cells and the highest CD4+:CD8+ ratio. Females in Beagles and Dachshuns had nonsignificantly higher percentages of total lymphocytes, CD3+, CD4+, and nonsignificantly lower percentages of CD21+ lymphocytes. We concluded that there are age-, breed-, and perhaps also gender-related differences in lymphocyte subset distribution in the peripheral blood of dogs. Therefore, there is need to use appropriate control group in the experimental protocols. Among-breed differences could explain, at least partly, breed predisposition for some diseases. 相似文献
16.
McBride JW Corstvet RE Taylor BC Osburn BI 《Veterinary immunology and immunopathology》1999,67(2):161-170
Site-specific responses of bronchoalveolar and peripheral blood lymphocyte subsets were compared during primary and anamnestic immune responses against live Pasteurella haemolytica A1 (Ph1). Eight 1-year old calves were sequentially exposed intrabronchially with aerosolized Ph1 on days 0, 14, and 21, and two calves were sham exposed. Bronchoalveolar and peripheral blood lymphocytes were analyzed before each Ph1 exposure, and on days 3 and 7 post exposure using single and two-color flow cytometry to identify CD2+, CD4+, CD8+, CD21+, CD45R+, CD25+ and gammadelta lymphocyte subsets. Significant differences (p < 0.05) in bronchoalveolar and peripheral blood lymphocyte subsets were observed before Ph1 exposure. Subsequent aerosol exposures, resulted in significant (p < 0.05) changes in bronchoalveolar lymphocyte subsets and the CD4:CD8 bronchoalveolar lymphocyte ratio, but concomitant changes were not observed in peripheral blood lymphocytes. Expression of CD2, CD4 and CD8 lymphocyte differentiation antigens was consistently lower and more heterogeneous on bronchoalveolar lymphocytes. Differential analysis of bronchoalveolar leukocytes revealed a significant increase in bronchoalveolar lymphocytes and neutrophils during anamnestic responses. 相似文献
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18.
Otani I Niwa T Tajima M Ishikawa A Watanabe T Tsumagari S Takeishi M Kanayama K 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2002,64(5):441-444
CD56+ cells in canine blood leukocytes were characterized by flow-cytometric analysis of peripheral blood of 30 healthy adult beagle-dogs (15 males and 15 non-pregnant females). In 19 of the 30 dogs, anti human CD56 antibody, Leu-19, reacted with 8.8-21.7% of peripheral blood lymphocytes. All CD56+ cells simultaneously expressed CD3 molecules on their surface. Further phenotypic analysis revealed that 50.6+/-13.1% of the CD56+ cells showed CD4-CD8+ phenotype and 43.7+/-10.1% showed CD4+CD8- phenotype. Expression intensity of CD56 on the CD4-CD8+CD56+ cells was significantly higher than that on CD4+CD8-CD56+ cells (P<0.001). These findings indicate that CD56, which is a neural cell adhesion molecule, is uniquely expressed on subsets of T lymphocytes in canine peripheral blood. 相似文献
19.
Available data on the normal levels of white blood cell populations in healthy rhesus macaques (Macaca mulatta) originated and living in China is scanty. To obtain such data, blood samples from 150 Chinese rhesus macaques were collected and the normal range of white blood cells and their subsets were analyzed according to age and sex by flow cytometry. CBC data showed that the count of total white blood cells and lymphocytes decreased with age. Phenotypic analysis of CD4 and CD8 expression on CD3+ T lymphocytes showed that the percentage of CD4+ T cells (51.4+/-9.6%), CD4-CD8- T cells (8.5+/-4.1%) and the ratio of CD4+ T to CD8+ T cells (1.26+/-0.55) decreased with age; and the percentage of CD8+ T cells (42.0+/-9.7%), CD4+CD8+ T cells (1.3+/-0.9%) and CD3+ lymphocytes (55.3+/-13.3%) increased with age. However, no statistically significant difference was observed between the male and female groups in most parameters in these monkeys except for the percentage of CD4+CD8+ T cells. This study provided basic information about blood cell count and T lymphocyte subsets in Chinese rhesus macaques. It may be useful for comparative studies using Indian and Chinese rhesus macaques. 相似文献