Selenium Supplementation Alleviates Autoimmune Thyroiditis by Regulating Expression of Th1/Th2 Cytokines

Selenium （Se） is an essential trace element. Autoimmune thyroid diseases （AITD） are destructive inflammatory or anti-receptor autoimmune diseases characterized by reactivity to self-thyroid antigens. However, the effects of Se on the cytokines in AITD are still unclear. So we researched the role of Selenium （Se） and Thl/Th2 cytokine productions in the pathogenesis of autoimmune thyroid diseases （AITD）.

Effect of Shoutai Pills on Th1/Th2 Cytokines in Serum and Endometrium of Rats with Stimulated Ovulation

In our previous study,we found that Shoutai pills could improve the embryo implantation rate as well as the levels of estrogen,progesterone and estrogen receptor in rats with stimulated ovulation.However,the mechanism is not clear.This study was designed to investigate the effect of Shoutai pills on the levels of Th1 and Th2 cytokines in rats with stimulated ovulation and the mechanism.The rat model of stimulated ovulation was established by combined injection of pregnant mare serum gonadotropin(PMSG)and human chorionic gonadotropin(HCG).Then the rats were randomly divided into model group(M),Shoutai pills group(S),progesterone group(P)and normal group(N).All the pregnant rats were treated from the first day.The S and P groups were administrated with gavage of Shoutai pills and injection of progesterone respectively,and N and M groups were given the same volume of normal saline and distilled water respectively.After treatment for 7 days,the animals were executed for serum and uterine tissues.The ELISA method was adopted to detect the contents of Thl cytokines[interferon-γ(INF-γ),interleukin-2(IL-2)]and Th2 cytokines(IL-4,IL-6,IL-10).The expression of leukemia inhibitory factor(L1F)and leukemia inhibitory factor receptor(LIFR)was detected by Western blotting and real-time PCR.As compared with N group,the expression levels of IFN-y and IL-2 in M group were significantly increased,and those of IL-4,IL-6,IL-10.LIF and LIFR were significantly decreased(P<0.05).As compared with M group,the levels of IL-4,IL-6,IL-10,LIF and LIFR in S group were significantly increased(P<0.05),and those of IFN-γand IL-2 were significantly decreased(P<0.05).It was suggested that Shoutai pills can increase the levels of IL-4.1L-6,IL-10,LIF and LIFR as well as reduce the levels of INF-γand IL-2 in rats with stimulated ovulation.The Shoutai pills may improve endometrial receptivity and promote embryo implantation by maintaining the balanee of Th1/Th2 cytokines.

Local Th1/Th2 Cytokine Expression in Experimental Murine Vaginal Candidiasis

In order to investigate the expression of Th1 and Th2 cytokines in the vaginal candidiasis caused by Candida, the fungal vaginitis model was established in female ICR mice by intravaginal inoculation of suspension of C. albicans after the animals were pretreated with estradiol. Reverse transcriptase-polymerase chain reaction （RT-PCR） was used to detect the expression of IL-2, IL-4, IL-10 and TGF-β1 in the vagina in the mice of different groups at different time points after the beginning of the experiment. The average expression level of IL-2 mRNA in group D （estrogen-treated mice） was significantly higher than that in groups H （estrogen-untreated mice） and I （control group） on the day 2. The average expression level of IL-4 mRNA in group D was significantly higher than that in groups I and H on the day 5. The average expression level of IL-10 mRNA in group D was significantly higher than that in groups H and I from day 7 to 11. The average expression level of TGF-β1 mRNA in group D was significantly higher than that in groups H and I at all time points. It was concludes that the high-level expression of IL-2 mRNA during early infection was associated with clearance of mucosal C. albicans, and the high-level expression of IL-10 mRNA during late stage of the infection was related to susceptibility to infection. TGF-β1 may play a predominant role when the virtual absence of changes in other Th-type cytokines during infection.

HBV慢性感染患者外周血Th_1/Th_2(Tc_1/Tc_2)细胞IFN-γ和IL-4的表达及其临床意义

目的 探讨Th1 /Th2 (Tc1 /Tc2 )型细胞因子的变化在慢性HBV感染的临床分型中的意义 ,探讨Th1 /Th2 (Tc1 /Tc2 )型细胞在慢性HBV感染中的作用。方法 用PMA和Ionomycin作为刺激剂 ,采用流式细胞仪对慢性HBV感染者外周血CD3 + /CD8+ T细胞和CD3 + /CD8-T细胞内IFN γ和IL 4的表达进行检测 ,比较乙肝病毒携带者、慢性乙型肝炎、活动性肝炎后肝硬化和慢性重症肝炎各组Th1 /Th2 (Tc1 /Tc2 )型细胞因子水平的变化。结果 慢性肝炎、活动性肝炎后肝硬化、慢性重症肝炎患者的Th1 、Tc1 细胞均高于正常对照组和乙肝病毒携带者。慢性重症肝炎组Th1 、Tc1 显著高于慢性肝炎、正常对照组 (P <0 0 1) ,慢性重症肝炎组Tc1 显著高于活动性肝炎后肝硬化组 (P <0 0 5 )。活动性肝炎后肝硬化组Tc1 显著高于正常对照组 (P <0 0 5 )。Th1 、Tc1 细胞随着慢性乙型肝炎肝脏炎症活动的加剧而增高。而Th2 、Tc2 细胞则在各组中均无显著性差异 (P >0 0 5 )。结论 在慢性HBV感染中 ,Th1 和Tc1 细胞数量与肝脏炎症活动严重程度呈正相关 ,提示Th1 和Tc1

菟丝子总黄酮对大鼠流产模型血清P、PR、Th1/Th2细胞因子表达的影响

目的:探讨菟丝子总黄酮对大鼠流产模型蜕膜PR及Th1/Th2细胞因子表达的影响,同时观察血清P和PR的变化。方法:对溴隐亭致SD孕鼠流产模型,设菟丝子总黄酮高、低剂量治疗组、达芙通为阳性对照组,于孕12d处死各组大鼠,酶联免疫检测血清P和PRL的水平,免疫组化法检测蜕膜PR的表达,RT-PCR法检测蜕膜Th1/Th2 mRNA的表达。结果:模型组蜕膜IL-4、IL-10 mRNA及PR蛋白表达明显低于正常妊娠组,TNF-α、IFN-γmRNA表达明显高于正常妊娠组,差异有显著性(P<0.05),菟丝子总黄酮可上调流产大鼠蜕膜IL-4、IL-10、PR的表达,下调TNF-α、IFN-γ表达,同时可提高血清P的水平,其作用与孕激素达芙通相似。结论:菟丝子总黄酮可能通过调节母胎界面内分泌-免疫网络平衡而起到维持早孕的作用。

哮喘患儿血清Th_1/Th_2类细胞因子水平及其临床意义的研究

采用 IL ISA法测定了哮喘发作期和缓解期患儿的血清白介素 - 12 ( IL- 12 )和白介素 - 4 ( IL- 4 )。结果发现 ,发作期哮喘患儿 IL - 12水平 ( 3 5 .2± 11.18pg/ ml)显著低于缓解期 ( 4 2 .75± 13 .3 8pg/ ml)和健康儿 ( 4 5 .4 3±2 9.19pg/ ml) ,P分别 <0 .0 1、0 .0 5。发作期和缓解期哮喘患儿血清 IL - 4阳性率 (分别为 5 5 .5 6%和 3 6.3 6% )均显著高于健康儿 ( 9.1% ) ,P分别 <0 .0 1、0 .0 5。IL- 12和 IL- 4呈显著负相关 ( r=- 0 .3 4 ,P<0 .0 5 )。认为哮喘患儿存在明显的 Th1 / Th2 类细胞因子失衡 ,IL- 12和 IL- 4在哮喘发病中都起重要作用。吸入糖皮质激素等治疗可改变这种失衡状态。

Impact of Bisphenol A (BPA) and Free Fatty Acids (FFA) on Th2 Cytokine Secretion from INS-1 Cells

Bisphenol A (BPA) is used in huge amounts for many plastic products and is a hormone (estrogen) disrupting agent. BPA as well as FFAs may be deleterious for the immune system. The aim was to identify Th2 cytokines and some of their signal transduction mechanisms in INS-1 cells, an insulin secreting cell line. Screening using a proteome profile indicated an increase of IL-1, IL-2, IL-4, IL-6, IL-10, IL-13 and IL-17 by BPA. Also FFAs (in combination with LPS) were positive. In detailed quantitative measurements, these results were confirmedly indicating a complex array of pro-and anti-inflammatory potential. The interaction of BPA with 17β-estradiol was non-additive with respect to IL-4 and IL-6 release and additive with respect to FFA interaction indicating same and different mechanisms of action, respecttively. As signal transduction PI3K (Wortmannin-sensitive) and STAT-3/6 (Tofacitinib-sensitive) are involved in various effects, INS-1 cells release several cytokines due to BPA and FFA attack which may be involved in disturbance of glucose homoeostasis and type 1 diabetes.

检测肺癌中辅助性T细胞(Th_1/Th_2)的临床意义

目的 探讨辅助性T细胞Th1 和Th2 细胞因子对肺癌患者的临床意义 ,为肿瘤的免疫治疗提供依据。方法 采用放射免疫 (RIA)和酶联免疫吸附法 (ELISA)检测 86例肺癌患者、5 9例肺良性病患者及45例正常对照辅助性T细胞分泌的细胞因子。以IL 2和TNF α的水平代表Th1 型细胞因子 ,IL 4、IL 6和IL 8的水平代表Th2 型细胞因子。结果 肺癌患者IL 2 [( 2 4.6± 12 .0 ) μg/L]的水平显著低于肺良性病患者[( 71.1± 2 5 .4) μg/L] (t =3 .82 ,P <0 .0 1)和正常对照 [( 69.3± 19.5 ) μg/L] (t =2 .76,P <0 .0 1) ,IL 6[( 0 .13± 0 .0 4) μg/L]的水平显著低于正常对照 [( 0 .2 3± 0 .0 5 ) μg/L ) (t =3 .3 9,P <0 .0 1) ,IL 4[( 2 5 4.2±78.0 ) μg/L]、IL 8[( 0 .49± 0 .16) μg/L]、TNF α[( 2 .76± 1.12 ) μg/L]的水平明显高于肺良性病患者 [( 63 .6± 18.6) μg/L ,( 0 .3 6± 0 .18) μg/L ,( 0 .96± 0 .2 0 ) μg/L]及正常对照 [( 60 .9± 19.6) μg/L ,( 0 .3 5± 0 .0 7) μg/L ,( 0 .93± 0 .19) μg/L] (t值分别为 4.10、4.89和 3 .76,P均 <0 .0 1) ,肺良性病患者和正常对照之间的IL 2、TNF α、IL 4、IL 8均未见明显差异 (P >0 .0 5 ) ,肺癌组IL 6的水平与肺良性病组 [( 0 .15± 0 .0 4)

TH_1/TH_2型细胞因子在月经周期内膜及早孕蜕膜中的表达及分析

目的 :探讨TH1 /TH2 型细胞因子在妊娠免疫耐受中的作用及意义 .方法 :采用免疫组化及原位杂交技术对 4 3例正常育龄妇女及 4 0例原因不明复发性流产妇女月经周期内膜及早孕蜕膜TH1 型细胞因子 (IL 2 ,TNF α) ,TH2 型细胞因子 (IL 6 ,IL 1 0 )进行标记和分析 .结果 :①IL 2 ,IL 2mR NA在复发性流产妇女增殖期、分泌期、早孕期子宫内膜腺上皮中的表达逐渐增高 ,且明显高于正常妇女组 (IL 2 :F =75 .2 91 ,P <0 .0 1 ;IL 2mRNA :F =93.972 ,P <0 .0 1 ) .②肿瘤坏死因子 α(TNF α)在正常与流产组月经周期内膜及早孕期蜕膜中的表达均呈现逐渐增多趋势 ,但两组之间TNF α的表达均无显著性差异 (F =1 .0 71 ,P >0 .0 5 ) .③与IL 2 ,IL 2mRNA相反 ,IL 6 ,IL 1 0mRNA在正常妇女月经周期内膜及早孕蜕膜中的表达均逐渐增多 ,且明显高于复发性流产组(IL 6 :F =94 .4 2 1 ,P <0 .0 1 ;IL 1 0mRNA :F =2 6 9.75 2 ,P<0 .0 1 ) .结论 :IL 2在妊娠中起免疫排斥作用 ,过量表达会导致复发性流产 ;TNF α可能参与子宫内膜的增殖、生长及发育 ;IL 6 ,IL 1 0在正常妊娠中起着积极的免疫营养作用 .此结果提示 :成功的妊娠有赖于母胎界面免疫耐受中TH1

Effect of dexmedetomidine on Th1/Th2 cytokine and immune function in patients undergoing radical mastectomy

Objective: To investigate the effect of dexmedetomidine on Th1/Th2 cytokines and immune function in patients with breast cancer after radical mastectomy. Methods: In our hospital from July 2016 to July 2017 undergoing radical mastectomy for breast cancer were studied in 79 patients, were randomly divided into observation group and control group. Two groups of patients with routine preoperative preparation, monitoring blood pressure, electrocardiogram, heart rate, pulse, oxygen saturation, establish vein channel, using propofol, remifentanil, vecuronium induced anesthesia, observation group before induction of anesthesia, dexmedetomidine 1 μg/kg, 10 min after infusion, followed by 0.5 μg/kg/h continuous infusion to the end of the operation, the control group with normal saline continuous infusion till the end of the operation. Two groups of patients before induction of anesthesia (T0), at the end of operation (T1), 6 h after operation (T2), 24 h after operation (T3), 72 h after operation (T4) from peripheral venous blood determination of interleukin-2 by ELISA method (IL-2), interleukin-4 (IL-4), interleukin-10 (IL-10) and interferon gamma (IFN-γ), calculated IFN-γ/IL-4 in T0, T2, T3, T4from peripheral blood. CD3+, CD4+, CD8+, NK cells were determined by flow cytometry and CD4+/CD8+ were calculated. Results: Two groups of IL-2 and IFN- in T1, T2, T3gamma, T4is higher than T0, IL-10 less than T0, and the observation group IFN-γ/IL-4 is higher than T0, the control group was lower than that of T0when compared with T0significant difference, 2 in group IL-4 had no obvious changes were observed in group IL-2;IFN-γ, IFN-γ/IL-4 in T1, T2, T3, T4higher than the control group, IL-10 was lower than the control group, significant difference between the 2 groups. CD3+, CD4+, CD4+/CD8+, NK cells in T2group was lower than that of T0, T3, and CD8+ had no obvious change, compared with T0significant difference;the observation group CD3+, CD4+, CD4+/CD8+, T2, T3in NK cells was higher than the control group, significant difference between the 2 groups. Conclusion: Dexmedetomidine can inhibit the stress response during the perioperative period of radical mastectomy, correct the balance disorder of Th1/Th2, improve the level of T lymphocyte subsets, and exert better immune protection function.

Analysis of Th1/Th2 Response Pattern for Erythrodermic Psoriasis

As one of the most serious types of psoriasis, pathogenesis of erythrodermic psoriasis（EP） is unclear so far. In this study, we aimed to detect the levels of Th1/Th2 cytokine-associated transcription factors and T-lymphocyte clone in peripheral blood mononuclear cells（PBMCs） derived from EP patients, and gene expression level of T-bet/GATA-3 in skin lesion. The potential role of Th1/Th2 reaction pattern played in the pathogenesis of EP was also discussed. Serum levels of IFN-γ, IL-2, IL-4 and IL-10 were quantified by ELISA among 16 EP patients, 20 psoriasis vulgaris（PV） patients and 15 healthy controls. The expression levels of T-bet/GATA-3 in the skin lesion and PBMCs were examined by real-time qPCR. The ratio of Th1/Th2 was measured by flow cytometry. The levels of IFN-γ, IL-2, IL-4 and IL-10 were higher in EP patients than in the healthy controls. The levels of IL-4 and IL-10 were 69.44±11.45 and 12.62±4.57 pg/mL, respectively, in EP patients, significantly higher than those in PV patients and healthy controls（P〈0.05）. Flow cytometry revealed the levels of both Th1 and Th2 in PBMCs from EP patients were higher than those in healthy controls, and the Th1/Th2 ratio was dramatically lower than in PV patients（P〈0.01）. The ratios of IFN-γ/IL-4 and T-bet/GATA-3 in EP patients were both less than 1.0, suggesting a reversal when compared with the other two groups. Our study indicated that the EP patients exerted a Th1/Th2 bidirectional response pattern, and the balance of Th cell subsets inclines to Th2, which might be one of the important mechanisms of EP pathogenesis.

祛毒退黄汤结肠滴注给药对慢性乙型肝炎肠源性内毒素血症、外周血Th_(17)/Treg细胞因子和肝功能的影响

目的:探讨慢性乙型肝炎(CHB)患者肠源性内毒素血症(TEM)对外周血Treg细胞、Th_(17)细胞及对肝功能的影响。方法:收集35例健康对照者(HC)和70例CHB患者且血浆内毒素阳性患者的外周血;应用流式细胞术测定外周血Treg细胞(CD_4^+Fox P_3^+)及Th_(17)细胞(CD_4^+IL-17)的水平;并结合血浆谷丙转氨酶(ALT)、谷草转氨酶(AST)和总胆红素(TBIL)进行分析。结果:与健康对照者比较,CHB患者的Treg细胞百分比、Th17细胞百分比显著升高(P<0.05);CHB内素素阳性组患者(对照组)Treg细胞百分比、Th_(17)细胞百分比水平均明显高于研究组(P<0.05)。并且治疗后研究组肝功能指标血浆谷丙转氨酶(ALT)、谷草转氨酶(AST)和总胆红素(TBIL)的改善较对照组更为明显(P<0.05)。两组患者不良反应发生率差异不具有统计学意义(P>0.05)。结论:自拟祛毒退黄汤结肠滴注给药对慢性乙型肝炎肠源性内毒素血症症状和肝功能均有较为明显的改善作用,副作用小,值得临床应用。

Potential immunomodulatory role of sesamin in combating immune dysregulation associated with COVID-19

The ongoing outbreak of novel coronavirus disease 2019(COVID-19),caused by severe acute respiratory syndrome coronavirus 2(SARS-CoV-2),has caused an unprecedented global health crisis.Development of a cure for this devastating disease is currently at full speed,with several vaccines against COVID-19 already authorized and administered.Currently,demand for these vaccines far exceeds supply.As such,boosting immunity represents a viable route to halt the rapid spread of SARS-CoV-2 and limit fatalities until vaccines become more readily and widely available.The use of phytochemicals appears to be a promising panacea.Sesamin,a lignan isolated from Sesamum indicum seeds,is known for its potent pharmacological properties,and is therefore hypothesized as a potential candidate in the therapeutic regimen against COVID-19.Herein,we highlight the confirmed therapeutic anti-inflammatory and immune-modulatory potential of sesamin against myriads of respiratory disorders,and tentatively suggest that sesamin may exert similar potent effects against COVID-19.Precisely,we speculate that sesamin may help alleviate COVID-19 via restoring Th1/Th2 balance and preventing inflammation and cytokine storm development.Additionally,we further support the promising role of sesamin against COVID-19 by underscoring the direct evidence,which suggests that sesamin may demonstrate promising inhibitory potential against three important SARS-CoV-2 targets,namely main protease,spike protein,and angiotensin-converting enzyme 2 receptor.Although preliminary,there is ample evidence to propose sesamin as a potential phytotherapeutic and prophylactic candidate against COVID-19.Further in vitro,in vivo,and preclinical studies are required to further substantiate the role of sesamin in the prevention and/or treatment of COVID-19.

COVID-19患者淋巴细胞数及Th/Tc值预测病情进展研究

目的探讨新型冠状病毒肺炎(COVID-19)患者病情进展与外周血淋巴细胞数(TLC)、CD4+T(Th)与CD8+T(Tc)比值变化情况,以及TLC和Th/Tc值作为新冠肺炎病情进展监测指标的可行性。方法收集2020年1月28日—2月10日某院确诊的12例COVID-19患者的实验室检测资料,根据临床症状分为重型/危重型组、轻型/普通型组两组,采用流式细胞仪检测两组患者外周血TLC,比较不同病情患者TLC、Th/Tc值。结果COVID-19患者TLC占比低于正常值范围,重型/危重型组较轻型/普通型组更低;COVID-19患者Th细胞占比、Th/Tc值高于正常范围,重型/危重型组比轻型/普通型组患者更高。流式检测结果显示,两组患者T淋巴细胞、Th细胞、Tc细胞绝对值均降低,轻型/普通型组、重型/危重型组T淋巴细胞[(913±275)μL VS(526±228)μL]、Th细胞[(530±99)μL VS(351±41)μL]、Tc细胞[(255±84)μL VS(128±70)μL]绝对值比较,差异均有统计学意义(均P<0.05)。结论通过TLC、Th/Tc的值判断COVID-19患者免疫状态,预测炎症水平,可为监测COVID-19患者疾病进展和确定抗“炎症因子风暴”治疗时机提供依据。

慢性乙型肝炎患者IFN-r、IL-2、IL-4、IL-10的活性测定及其相关性研究

目的 :探讨慢性乙型肝炎 (CHB)患者外周血单个核细胞 (PBMC)Th1 、Th2 两类细胞因子的分泌情况及其对肝功能的影响。方法 :以夹心ELISA法检测 41例CHB患者PBMC经PHA刺激后 ,培养上清液中Th1类细胞因子 (IFN -r、IL -2 )和Th2 类细胞因子 (IL -4、IL -10 )的活性 ,PCR法检测患者外周血清HBVDNA。结果 :CHB患者无论血清HBVDNA阳性组还是阴性组 ,IL -2活性较对照组显著降低 (P <0 0 1) ,IFN -r降低 ,但差异不显著 (P >0 0 5 ) ;血清HBVDNA阳性组IL -2活性较HBVDNA阴性组显著增高 (P <0 0 1) ,IL -10显著降低 (P <0 0 5 ) ,IL -4降低但无显著性差异 (P >0 0 5 ) ;血清HBVDNA阳性组ALT与GGT活性显著高于阴性组 ( P <0 0 5 )。结论 :在CHB患者体内存在着Th1 、Th2 免疫应答失衡 ,Th1、Th2两类细胞因子水平的改变引起细胞免疫功能紊乱 ,由此造成HBV持续性感染及肝损伤。

Effect of Chinese Herbal Treatment on Th1- and Th2-Type Cytokines,Progesterone andβ-Human Chorionic Gonadotropin in Early Pregnant Women of Threatened Abortion

Objective： To study the clinical effects of Prescription Zhuyun-Ⅲ （助孕3号方, ZYⅢ） on early pregnant women diagnosed as threatened abortion, and its mechanism in immunity and endocrine by determining serum Th1- and Th2-type cytokines, progesterone, and β-human chorionic gonadotropin （β-HCG）. Methods： The treatment group comprised 30 early pregnant women diagnosed as threatened abortion of deficiency syndrome of Pi （脾）, Shen （肾）, or both. The control group consisted of 20 normal early pregnant women of similar gestational age. Patients in the treatment group were administered with ZYⅢ for 4 weeks. Peripheral blood samples were collected pre- and post-treatment from both the treatment and the control groups. Serum Thl-type cytokine [interleukin-2 （IL-2）] and Th2-type cytokine [interleukin-10 （IL-10）] were determined by flow cytometry, and serum progesterone and 13-HCG were determined by ELISA. Results： （1） The treatment was effective in 26 and ineffective in 4 patients of the treatment group. Therefore, the cure percentage was 86.67%. （2） In the treatment group before the treatment, IL-2 was significantly higher, IL-10 tended to be less, and the Th1/Th2 balance shifted toward Thl compared with those in the control group. （3） After the treatment, IL-2 was decreased, IL-10 was increased, and IL-2/IL-10 was decreased. Both progesterone and β-HCG were increased. Changes of progesterone were positively correlated with changes of IL-10, whereas changes of β-HCG were negatively correlated with changes of IL-2. Conclusions： Our study suggests that ZYⅢ has an evident function of protecting the fetus, and one of its mechanisms is inhibiting the secretion of Thl cytokines, promoting the secretion of Th2 cytokines, and recovering the pathological shift of the Th1/Th2 balance. The other possible mechanism is increasing serum progesterone and β-HCG concentrations. Moreover, there are some correlations between the above two effects.

干燥综合征患者外周血T淋巴细胞亚群及Th类细胞因子表达的变化观察

目的:观察与研究干燥综合征患者外周血T淋巴细胞亚群及Th类细胞因子表达的变化情况。方法:选取2017年1月-2020年10月80例干燥综合征患者为观察组,同时期的80名体检健康者为对照组。比较两组的外周血T淋巴细胞亚群(CD3^(+)、CD4^(+)及CD8^(+))及Th类细胞因子(Th1及Th2因子)表达水平,并比较观察组中不同严重程度者的检测水平;采用Spearman秩相关分析上述外周血T淋巴细胞亚群及Th类细胞因子与干燥综合征严重程度的关系。结果:观察组CD8^(+)、IFN-γ、TNF-α、IL-4、IL-6及IL-10均高于对照组,CD3^(+)、CD4^(+)低于对照组,差异均有统计学意义(P<0.05)。观察组中不同严重程度者的外周血T淋巴细胞亚群、Th1与Th2因子比较,差异均有统计学意义(P<0.05);严重程度较高者的CD8^(+)、IFN-γ、TNF-α、IL-4、IL-6及IL-10均高于严重程度较低者,CD3^(+)、CD4^(+)低于严重程度较低者,差异均有统计学意义(P<0.05)。Spearman秩相关分析显示,CD8^(+)及Th类细胞因子与干燥综合征严重程度均呈正相关,CD3^(+)、CD4^(+)与干燥综合征严重程度呈均负相关(P<0.05)。结论:干燥综合征患者CD8^(+)及Th类细胞因子表达升高,CD3^(+)与CD4^(+)降低,且与疾病的严重程度密切相关,检测价值较高。

Effects of combined immune therapy on survival and Th1/Th2 cytokine balance in rat orthotopic liver transplantation

Background The induction of immune tolerance and suppression of allograft rejection has become the focus in the study of liver transplantation. The effect of immune therapy with anti-CD40L mAb alone or in combination with cyclosporine A （CsA） on the recipient survival and Th1/Th2 cytokine profile was studied to elucidate its immunological mechanism and role in rat orthotopic liver transplantation.Methods The model of rat orthotopic liver transplantation was established by modified Kamada＇s technique. Recipients were divided into group A （control group）： SD→SD; group B （group of rejection）： SD→Wistar without any treatment; group C： SD→Wistar with CsA monotherapy from day 1 to day 5; and group D： SD→Wistar with CsA from day 1 to day 5 and anti-CD40L mAb on day 0 and day 2. The survival of the recipients in all groups was observed and ELISA technique was used to detect the level of cytokines in peripheral blood on post-transplant day 7.Results The survival period of recipients in groups A （〉60 days） and D （〉60 days） was significantly longer than that in group B （13.8±2.4 days）. The serum levels of interleukin 2 （IL-2） and interferon y in group B were significantly higher than those in other groups; the level of tumor necrosis factor a was higher but not statistically significant. In contrast, the serum levels of IL-4 and IL-10 in group D were elevated more significantly than those in group B （P〈0.05）.Conclusions Combined immune therapy can prolong the survival of al log rafts. Increased expression of Th2 cytokines, which is closely related to the induction of tolerance and suppression of rejection, is beneficial to the long-term survival of recipients and allografts.

Graves眼病Th_1/Th_2相关细胞因子群谱的特征

目的 探讨Graves眼病 (Graves’ophthalmopathy ,GO)发生的免疫机制 ,明确GO的Th1/Th2 相关细胞因子群谱的特征。方法 用逆转录聚合酶链反应 (RT PCR)检测IFN γ、TNF α、IL 2、IL 4、IL 6、IL 10等 6种细胞因子的mRNA转录。结果 与正常对照组相比 ,Graves病恶性突眼组与非突眼组细胞因子的基因转录检出率明显增高 (P <0 .0 1) ;Graves病非突眼组Th2 类细胞因子IL 4和IL 6的基因转录检出率明显高于Th1类细胞因子IFN γ ,TNF α和IL 2的基因转录检出率 (P <0 .0 1) ;而恶性突眼组Th1和Th2 之间细胞因子的基因转录检出率差异无显著性 (P >0 .0 5 )。结论 Graves病恶性突眼者细胞因子的基因转录模式呈典型的Th0 ,细胞免疫和体液免疫共同参与了突眼的发生 ,而非突眼者细胞因子表达向Th2 方向漂移 ,以体液免疫应答为主。

糖皮质激素对哮喘患者Th_1/Th_2类细胞因子水平失衡的影响

目的 为了解糖皮质激素对哮喘患者Th1 /Th2 类细胞因子水平失衡的影响 ,探讨吸入糖皮质激素治疗哮喘的机制。方法 取外周血 ,用ELISA法检测患者治疗前后和对照组血浆IL -4 (白介素 -4 )、IL -12 (白介素 -12 )、IgE的水平 ,并对统计结果进行统计分析。结果 哮喘组治疗后较治疗前血浆IL -4、IgE和PEF(峰值呼气流速 )变异率均下降 (P <0 0 5 ) ;IL -12的浓度升高 ( P <0 0 5 )。哮喘组治疗前血浆IL -4、IgE和PEF变异率均高于对照组 ( P <0 0 1) ;IL -12的浓度低于对照组 ( P <0 0 1)。经布地奈得 (BUD)治疗后 ,IL -4和IgE浓度仍高于对照组 (P <0 0 1,P <0 0 5 ) ;IL -12低于对照组 (P <0 0 5 ) ;PFE变异率与对照组相比无显著性差异。经相关分析 :IL -4同IgE和PEF变异率呈正相关 (r =0 64 ,r =0 5 2 ;P <0 0 5 ,P <0 0 5 ) ;IL -12同IgE和PEF变异率呈负相关 (r =-0 61,r =-0 49;P <0 0 5 ,P <0 0 5 ) ;IL -4同IL -12呈负相关 (r =-0 86,P <0 0 1)。结论 糖皮质激素治疗哮喘的机制可能是抑制TH2 类细胞因子的过度分泌 ,调节TH