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.

EXPRESSION AND SWITCHING OF TH1/TH2 TYPE CYTOKINESGENE IN HUMAN GLIOMAS

Objective To study the expression and switching of Th1/Th2 cytokines gene in human gliomas and its effects on occurring and developing of human gliomas. Methods Interleukin(IL)-2 and interferon-γ represent Th1 type cytokines. IL-4, IL-6, IL-10, and IL-13 represent Th2 type cytokines. The gene expressions of Th1/Th2 cytokines in human glioma cells, glioma infiltrating lymphocytes, and glioma cell lines were detected by reverse transcription polymerase chain reaction (RT-PCR). The biological activity of cytokines in the supernatant of glioma cell lines was assayed by enzyme-linked immunosorbent assay (ELISA) method. Results The total positive rates of Th1 and Th2 type cytokines gene in human glioma cells were 14.77% and 75%. The total positive rates of Th1 and Th2 type cytokines gene in glioma infiltrating lymphocytes were 22.73% and 68.17%. There was obviously predominant expression of Th2 type cytokines in human glioma tissues, glioma infiltrating lymphocytes, and glioma cell lines. There was no unbalanced expression of Th1/Th2 cytokines in normal brain tissues. Conclusion There is a predominant expression of Th2 type cytokines in human glioma cells. The switching of Th1/Th2 cytokines gene may play an important role in the occurring and developing of human gliomas.

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.

Effects of the Overall Alkaloid of a Traditional Chinese Medicine “Tongbiling” on the Cytokine Expression in Th1 and Th2 Cells of Rheumatoid Arthritis and Their Signaling Pathway

To investigate the effects of overall alkali of a traditional Chinese medicine “Tongbiling” (brucine and strychnine alkaloids in main) on the cytokines expression in Th1 and Th2 cells in the synovial fluid of patients with rheumatism arthritis and their signal pathway, the mononuclear cells in the synovial fluid (SFMC) of patients were isolated by Ficoll-Hypaque gradient centrifugation, and the CD3 + CD69 + and CD3 + HLA-DR antigen were analyzed by flow cytometry in comparison with those of the peripheral blood. The rest of cells were cultured after resuspension with RPMI 1640 culture medium. Phorbol 12,13-dibutyrate (PDB) and ionomycin were added successively into the culture with various concentration of overall alkali Tongbiling (TBL). After 4 h of cultivation, the expression of IFN-γ and IL-4 in CD3 + cells were analyzed by flow cytometry. The influence of overall alkali TBL (100?mg/L) on the intracellular calcium was investigated after Fluo-3/AM labeling and stimulation with PDB and ionomycin at 1, 2, 4 and 10?min, and the influence of TBL on the expression of CD3 + CD69 + cells were determined with stimulation of PDB for 24?h in the whole blood lymphocytes culture. It was found that the percentage of T cells bearing CD69 was significantly up-regulated (77%), while that of T cells bearing HLA-DR was 44% in the synovial mononucleated cells. After PDB and ionomycin stimulation, the expression of IFN-γ in CD3 + cells were up-regulated, but there was no change on the expression of IL-4 in CD3 + cells, indicating that ratio of Th1/Th2 was significantly increased and Th cells differentiate to Th1 cells in mainly. Four concentrations of overall alkaloid of TBL (200?mg/L, 100?mg/L, 50?mg/L, 25?mg/L) could down-regulated the expression of IFN-γ in CD3 + cells and the Th1/Th2 ratio obviously, but all the concentrations of the overall alkaloids had no effect on the expression of IL-4 in CD3 + cells. 100?mg/L concentration of the overall alkaloid did not down-regulate the intracellular calcium level. Each concentration of the overall alkaloid could down-regulated the expression CD69 obviously on the PDB-activated mouse T cells. It concluded from the above observations that the overall alkaloid of TBL could relieve the inflammatory and immune damages by suppressing the expression of Th1 type cytokines and Th1 cell differentiation, regulating the imbalance of Th1/Th2 cells and inhibiting the early activation of the T lymphocytes bearing CD69. There was no remarkable influence on the intracellular calcium signaling transduction pathway. The inhibitory effected on T cells to express IFN-γ might be due to the suppression of PKC-MAPK signaling pathway. From the standpoint of traditional Chinese medicine, this might be due to the regulation of “Yin” and “Yang” imbalance of joints to modify the pathological status in rheumatoid arthritis. This study provided an experimental basis for the application of overall alkaloids of TBL in the treatment of rheumatoid arthritis.

Pre-evaluation of humoral immune response of Bactrian camels by the quantification of Th2 cytokines using real-time PCR

With the increasing immunological studies on camels due to the advantage of their single-chain antibodies for humanizations,it is demanding to develop an easy-to-handle evaluation method of their humoral immune response before proceeding with immunization of foreign antigens that may be toxic to camels.In this study,we quantitatively determined the expression levels of T-helper 2(Th2) cytokines in peripheral blood lymphocytes obtained from Bactrian camels by real-time PCR.The recorded kinetic profiles resulting from the immunization of ovalbumin(OVA) indicated that after immunization,Th2 cytokines including interleukin(IL) families such as IL-4,IL-10,and IL-13 in the camels were up-regulated by a factor of 1.78,3.15,and 1.22,respectively,which was validated by traditional enzyme-linked immunosorbent assay(ELISA) methods.Unlike ELISA which requires specific enzyme-labeled antibodies,this established method based on the minimal amount of blood samples holds an advantage in the preliminary evaluation of camel humoral immune response with desirable precision,which is meaningful for biomedical explorations of camel-derived antibodies.

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.

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.

T-bet与Thl/Th2在乙型肝炎中的作用机制

T-bet是T-box家族的一种重要转录因子,在CD4+T细胞Thl型的分化中起重要作用,并抑制Th2细胞因子合成,可使完全分化的Th2逆转为Th1。目前已证实多种疾病的发生、发展和预后涉及Thl/Th2分化失衡。而T-bet对Thl/Th2分化调控作用在疾病中的作用机制有助于解释疾病的发展机制,为疾病的治疗提供依据。文中就T-bet在乙型肝炎中的作用机制作一综述。

骨髓间充质干细胞对肺纤维化大鼠肺组织中Thl／Th2平衡的调节作用

目的：观察博莱霉素诱导的肺纤维化大鼠肺组织中Thl型细胞因子干扰素У（IFN-У）和Th2细胞因子白介素4（IL-4）的动态变化，并探讨骨髓问充质干细胞（BMSCs）对Thl／Th2平衡的调节作用。方法：健康雌性SD大鼠随机分为对照组、模型组、BMSCs组。采用气管内注射博莱霉素法（5mg／kg）制作大鼠肺纤维化模型，并给予BMSCs干预治疗。分别于造模后7、14d取肺组织。采用H-E染色法观察肺组织形态学改变；羟脯氨酸检测定量分析肺组织中总胶原蛋白的含量；免疫组织化学检测IFN-У、IL-4在肺组织中的分布及定位；免疫印迹检测IFN-У、IL-4的蛋白表达量。结果：与正常组大鼠相比，模型组大鼠肺组织有较多炎细胞浸润，纤维组织增生及胶原沉积；羟脯氨酸含量显著增加；IFN-У蛋白表达明显下调，IL-4的蛋白表达明显上调。与模型组大鼠相比，BMSCs组大鼠肺组织病理改变显著减轻；羟脯氨酸含量明显减少；IFN-У表达显著上调，但仍低于正常组表达水平；IL-4的表达显著下调，但仍高于正常组表达水平。结论：博莱霉素诱导的肺纤维化大鼠模型中存在Thl／Th2失衡现象，BMSCs移植可减缓其纤维化程度及病理进程，通过对Thl／Th2的调节作用实现。

血塞通注射液联合阿司匹林治疗老年缺血性卒中疗效及对患者血清Thl/Th2细胞因子水平的影响

目的:探讨血塞通注射液联合阿司匹林治疗老年缺血性卒中的疗效及对血清Thl/Th2细胞因子水平的影响。方法:选择老年缺血性卒中患者300例,随机分为对照组和观察组各150例。所有患者均进行改善脑循环及相应合并症对症治疗,对照组给予阿司匹林肠溶片治疗,观察组在对照组基础上给予血塞通注射液治疗,比较两组治疗前后FMA、MBI评分、NIHSS评分、IFN-γ、IL-4因子变化及临床疗效和生活质量水平情况。结果:治疗后,观察组中医证候积分比对照组下降更明显(P<0.05);治疗后,两组IL-6及IL-4水平均降低,IFN-γ及IL-2均升高;观察组IL-6及IL-4水平低于对照组,IL-2及IFN-γ高于对照组(P<0.05);两组患者治疗后FMA、MBI评分明显升高,而NIHSS评分明显降低,观察组改善更明显(P<0.05)。治疗后两组NSE、BNP水平明显下降,NGF水平明显上升,观察组更明显(P<0.05)。观察组基本治愈率46.67%,总有效率95.33%均高于对照组24.67%及88.00%(P<0.05)。观察组治疗后QLQ-C30评分显著高于对照组(P<0.05)。结论:血塞通注射液联合阿司匹林可显著改善老年缺血性卒中患者脑神经功能缺损状况,调节机体Thl/Th2细胞因子水平,疗效显著。

联合免疫治疗对复发性自然流产患者外周血Thl/Th2的影响

目的观察联合淋巴细胞免疫、免疫球蛋白和阿司匹林的疗法对复发性自然流产(RSA)患者外周血Thl/Th2的影响。方法 31例RSA患者进行联合淋巴细胞免疫、免疫球蛋白、阿司匹林治疗,测定治疗前后外周血INF-γ、IL-10含量,计算Thl/Th2指标。结果治疗后INF-γ较治疗前明显下降,IL-10较治疗前明显上升,Thl/Th2比值较治疗前明显下降,差异均有统计学意义(P<0.01)。结论 RSA患者存在Thl/Th2平衡异常,联合免疫治疗可诱导Thl向Th2转移,恢复Thl/Th2平衡。

Thl／Th2细胞因子在角膜移植免疫排斥反应中的研究进展

据统计我国因角膜病而致盲者有200～300万人，角膜病成为我国第2大致盲原因。目前治疗角膜病致盲的有效方案当属同种异体角膜移植，但移植术后免疫排斥反应是导致角膜移植失败的首要原因，尤其在高危角膜移植（新生血管、多次角膜移植及活动性炎症）免疫排斥反应可高达50％以上。因此，预防角膜移植排斥反应发生是角膜移植成功的关键。

慢性乙型肝炎在拉米呋定治疗过程中IL－12诱导的THl／TH2细胞因子反应

目的：探讨慢性乙型肝炎在拉米呋定治疗过程中IL—12对PBMC产生THI／TH2细胞因子的影响。方法：在拉米呋定治疗前和治疗3mo、6mo、9mo后，20例慢性乙型肝炎的PBMC在PHA(100μg·mL^-1)、HBcAg(1μg·mL^-1)、habeas(1μg·mL^-1)单独或联合IL—12(10ng·mL^-1)刺激下体外培养48h，收集上清液，用ELIS检测：IFN-γ和IL-10的水平。结果：在拉米呋定治疗3mo后，无论是抗原单独诱导还是联合IL-12共同诱导，PBMC产生-IFN-γ的水平同治疗前相比无显著变化；在治疗6mo后，抗原单独诱导产生IFN-γ的水平同治疗前相比无显著性差异，但IL-12诱导产生IFN-γ的增殖效应明显加强；在治疗9mo后，无论是抗原单独诱导还是联合IL-12共同诱导，PBMC产生IFN-γ的水平同治疗前相比均显著增高，同时IL-10的水平也显著降低。在治疗同一阶段，抗原联合IL-12诱导组产生IFN-γ水平明显高于抗原单独诱导组。结论：拉米呋定治疗慢性乙型肝炎过程中，随着HBV DNA的抑制，IL-l2对乙型肝炎患者PBMC产生IFN-γ协同效应逐渐增强，对IL-10的产生有抑制作用，提示拉咪呋定联合IL-12可能提高慢性乙型肝炎的疗效。

妊娠期尖锐湿疣患者外周血Thl/Th2型细胞因子的表达及相关机制研究

目的:针对妊娠期尖锐湿疣(CA)患者外周血Thl/Th2型细胞因子的表达及相关机制展开研究,为临床治疗提供一定的依据。方法:选取我院2011年12月至2012年12月间收治的30例处于妊娠期的尖锐湿疣患者作为本次的研究对象,即妊娠期尖锐湿疣组,并将其与另外30例非妊娠的尖锐湿疣患者进行比较,即非妊娠尖锐湿疣组。采用双抗体夹心ELLSA法检测妊娠期尖锐湿疣患者的血清白细胞介素-2(IL-2)与白细胞介素-10(IL-10)的表达,并将其与正常妊娠患者进行对比。结果:经过研究发现,妊娠期尖锐湿疣组血清IL-2的浓度明显低于与非妊娠尖锐湿疣组相比,两组对比有明显差异(P<0.05)。结论:妊娠可能会通过削弱患者的Th1型反应导加重患者的病情,而尖锐湿疣可能不会影响正常妊娠的母体免疫。

慢性阻塞性肺疾病急性加重患者Thl/Th2细胞因子谱的变化

目的研究Th1/Th2细胞因子谱在慢性阻塞性肺疾病急性加重(AECOPD)患者中的变化。方法该次研究抽取的以30例慢性阻塞性肺疾病急性加重患者、30例慢性阻塞性肺疾病稳定者和30名健康者作为研究对象,其入院时间为2013年1—12月。用流式微球阵列分析术(CBA)检测各组Th1/Th2细胞因子包括IL-4、IL-6、IL-10、TNF-α、IFN-γ的表达水平。结果 AECOPD组血清产生IL-4(27.22±1.51)pg/mL、IL-6(47.73±4.72)pg/mL低于慢性阻塞性肺疾病稳定组(34.79±1.37)、(72.38±5.31)pg/mL,(P<0.05)。AECOPD组血清产生IL-10(35.76±2.56)pg/mL低于慢性阻塞性肺疾病稳定组(45.15±2.08)pg/mL,(P<0.05)。AECOPD组血清产生TNF-α(19.11±1.08)pg/mL、IFN-γ(40.33±3.69)pg/mL高于慢性阻塞性肺疾病稳定组(12.93±0.36)、(22.28±1.16)pg/mL,(P<0.05)。而慢性阻塞性肺疾病稳定组其IL4(34.79±1.37)pg/mL、IL-6(72.38±5.31)pg/mL、IL-10(45.15±2.08)pg/mL、TNF-α(12.93±0.36)pg/mL、IFN-γ(22.28±1.16)pg/mL的表达水平与健康对照组(33.72±1.66)、(67.06±6.89)、(43.84±2.45)、(13.81±0.38)、(23.59±1.21)pg/mL相比,均差异无统计学意义(P>0.05)。结论慢性阻塞性肺疾病急性加重患者存在Thl/Th2细胞因子失衡。

Cytokine gene polymorphisms in idiopathic pulmonary fibrosis

AIM: To characterize cytokine gene polymorphisms in patients with idiopathic pulmonary fibrosis(IPF) compared to healthy controls.METHODS: Fifty-six IPF patients were involved in the study. The control population consisted of 144 healthy volunteers without history of lung disease.All of the patients were diagnosed with IPF according to the American Thoracic Society/European Respiratory Society consensus statement. Polymorphisms in the interleukin(IL)-1, IL-1, IL-1R, IL-1RA, IL-2, IL-4, IL-6, IL-10, IL-12, tumour necrosis factor, interferon, transforming growth factor, IL-1, IL-2, IL-4 and IL-4RA genes were characterized by polymerase chain reaction with sequence-specific primers. Statistical analysis was performed using the Med Calc statistical software. A Bonferroni correction of significance at an alpha of 0.05 was used for multiple analyses. A corrected P value less than 0.0023(0.05/22) was considered significant. RESULTS: We found significant differences in the IL-4 promoter region polymorphisms between IPF patients and controls. Namely, polymorphisms of IL-4(-590) [computed tomography(CT) in 32 of 56 patients vs 27 of 144 controls; P < 0.0001] and IL-4(-33)(CT in 25 of 56 patients vs 27 of 144 controls; P = 0.0006) differed between both groups. With regard to haplotypes, we found differences in the frequencies for haplotype 1 of IL-4(-1098)(-590)(-33) between IPF and controls(TCC in 23 of 56, TTC in 10 of 56, and TTT in 21 of 56 patients vs TCC in 112 of 144, TTC in 0 of 144, and TTT in 32 of 144 controls; P < 0.0001). We did not find significant differences in gene polymorphism frequencies of other cytokines in the IPF group vs the controls. CONCLUSION: We hypothesize that IL-4 promoter polymorphisms could be involved in the pathogenesis of IPF, likely via enhancement of the Th2 cytokine milieu with exaggerated fibroproliferative healing.

乙型肝炎病毒母婴垂直传播与Th1/Th2型细胞因子相关性研究

目的 :研究乙型肝炎病毒 (HBV)母婴垂直传播与T辅助细胞 1、2型细胞因子的相关性。方法 :将研究对象分为两组 :研究组为 78例乙型肝炎病毒表面抗原 (HBsAg)阳性孕妇 ;对照组为 40例正常孕妇。采用双抗夹心酶联免疫吸附法 (DAS-ELISA)检测孕妇外周静脉血及其新生儿脐静脉血血清中乙型肝炎五项指标 (HBVM)及细胞因子干扰素γ(IFN γ)、白细胞介素 12 (IL 12 )、白细胞介素 6 (IL 6 )水平。结果 :研究组孕妇分娩的新生儿有 10例宫内感染 ,宫内感染率为 12 82 %。胎儿宫内感染组孕妇血清中IFN -γ、IL - 12水平显著低于宫内未感染组及对照组孕妇 ,IL - 6水平则显著高于宫内未感染组及对照组孕妇 (P <0 0 5 )。宫内未感染组与对照组相比 ,上述三种细胞因子水平差异均无显著性(P >0 0 5 )。上述各组孕妇血清中IFN -γ与IL - 12水平均呈显著正相关 (P <0 0 1,P <0 0 5 ,P <0 0 5 ) ;IL - 12与IL -6呈显著负相关 (P <0 0 1,P <0 0 5 ,P <0 0 5 ) ;IFN -γ与IL - 6亦呈显著负相关 (P <0 0 1,P <0 0 5 ,P <0 0 5 )。各组新生儿脐血清中IFN -γ、IL - 12、IL - 6水平差异无显著性 (P >0 0 5 )。结论 :孕妇细胞免疫功能紊乱导致Th1型细胞因子IFN -γ、IL - 12水平下降 ,而Th 2型细胞因子IL -

小青龙汤对哮喘大鼠Th1/Th2型细胞因子水平的影响

研究复制卵蛋白大鼠哮喘模型 ,通过观察白介素 4 (IL - 4 )、γ -干扰素 (IFN -γ)及白介素 4 /γ -干扰素的比值 (IL - 4 /γ -干扰素 )的变化 ,探讨小青龙汤对哮喘大鼠Th1/Th2细胞亚群反应的影响及防治哮喘的作用机理。结果 :与正常组比较 ,哮喘模型组血浆IL - 4水平、IL - 4 /IFN -γ比例显著升高 (P <0 0 1) ;与哮喘模型组比较 ,小青龙汤组和地塞米松组均能显著降低IL - 4水平和IL - 4 /IFN -γ比例 (P <0 0 1) ,IFN -γ水平无显著性差异 (P >0 0 5 )。提示 :小青龙汤具有抑制Th2细胞亚群优势反应和调节免疫平衡的作用 ,从而减轻气道炎症 ,降低气道高反应性 。