Myricetin alleviates ovalbumin-induced allergic rhinitis in mice by regulating Th1/Th2 balance

Objective:To evaluate the effect of myricetin on ovalbumin(OVA)-induced allergic rhinitis in mice.Methods:Mice were sensitized and challenged using OVA(5%,500 mL)intraperitoneally and intranasally,respectively,on an alternative day for 14 days,followed by administration of myricetin(50,100,and 200 mg/kg)till day 21.Nasal symptoms,biochemical parameters,protein expressions,and histopathology were observed.Results:OVA-induced increased nasal symptoms including rubbing,sneezing,and discharge were significantly reduced by myricetin(100and 200 mg/kg)(P<0.05).Myricetin also protected against histamine challenge and attenuated elevated serum immunoglobulin E(IgE;total and OVA-specific),total IgG1,andβ-hexosaminidase levels,as well as leukotriene C4 and interleukins levels in nasal lavage fluid(P<0.05).Western blot analysis showed that myricetin significantly upregulated the protein expression of T-box expressed in T cells,while downregulating the protein expression of GATA binding protein 3,NF-κB,and IκB-α(P<0.05).Additionally,OVA-induced histopathological abberations in the nasal mucosa was markedly ameliorated by myricetin treatment(P<0.05).Conclusions:Myricetin exerts anti-allergic effects against OVAinduced allergic rhinitis via regulating Th1/Th2 balance.

Effect of glycyrrhetinic acid on Th1/Th2 balance in cough variant asthma mice

Objective:To evaluate the therapeutic effect of Glycyrrhetinic Acid on cough variant asthma(CVA)mice and to investigate the possible mechanism in reducing lung inflammation.Methods:48 young female Balb/c mice were divided into Control,CVA,Prednisone Acetate,Glycyrrhetinic Acid high-dose,Glycyrrhetinic Acid middle-dose and Glycyrrhetinic Acid lowdose groups randomly,with 8 mice in each group.The CVA mice model was established by ovalbumin(OVA)sensitization and OVA challenge,the animal asthma behavior was observed after drug administration,and the index of the lung of mice were recorded.The level of OVAsIgE in the bronchoalveolar lavage fluid(BALF)was tested by ELISA.The pathological changes of the lung tissue were observed by Hematoxylin and Eosin(H&E)staining.The protein expressions of T-bet,IFN-γ,Gata3,IL-4 and IL-13 in the lung tissue were determined by Western blot.Results:Compared with the CVA group,the index of lung of mice,the OVA-sIgE level in BALF and expression levels of Th2-related factor in the lung tissue of mice in Prednisone Acetate and Glycyrrhetinic Acid groups were significantly decreased(P<0.05 or P<0.01),the infiltration of inflammatory cells in the lung tissue was reduced,while expressions of Th1-related factor in the lung tissue was significantly increased(P<0.05 or P<0.01).Conclusion:Glycyrrhetinic acid has therapeutic effect on CVA mice,the underlying mechanism of Glycyrrhetinic acid alleviating lung impairment and airway inflammation may be associated with mediating the Th1/Th2 imbalance in the lung tissue.

All-transRetinoic Acid Regulates Th1/Th2 Balance in CD4+T cells When GATA-3 is Deficient

The essential effect of vitamin A on immune function occurs through various mechanisms including direct effect on ThloTh2 balance modulation. However, it is unclear whether or not vitamin A can regulate Thl-Th2 balance under a strong Thl-polarizing condition. Therefore, the purpose of our study was to examine the effect of vitamin A metabolite allotrans retinoic acid （ATRA） on ThloTh2 differentiation in CD4~ T cells under GATA-3 deficiency, which can induce Thl-polarizing condition. In the present study, GATA-3 deficiency T cells were induced by siRNA and checked by real-time quantitative PCR and western blot. GATA-3 deficiency CD4＋ T cells and normal CD4＋ T were treated for 48 h with or without ATRA.

Effect of Th1/Th2 balance on serum prostaglandin,COX-2,AVP and OT in primary dysmenorrhea rats with cold coagulation and blood stasis syndrome

Objective:Explore the role of Th1/Th2 balance in the pathogenesis of primary dysmenorrhea through study the effect of Th1/Th2 balance drift on serum prostaglandin F_(2α),prostaglandin,6-keto-prostaglandin F_(1α),TXB2,COX-2,AVP and OT in Primary Dysmenorrhea Rats with cold coagulation and blood stasis syndrome.Method:The rat model of primary dysmenorrhea with cold coagulation and blood stasis syndrome was established.On the basis of this model,Th1 shift model and Th2 shift model were established.The rats were divided into blank group,model group,Th1 shifting group and Th2 shifting group.The writhing reaction of rats in each group was compared,and the contents of PGF_(2α),PGE_(2),6-keto-PGF_(1α),TXB2,COX-2,AVP and OT in serum were detected.Results:Writhing latency:There was no significant difference between Th1 and Th2 shifting groups(P>0.05),Th2 shifting group was shorter than Th1 shifting group(P<0.05).Writhing times in 30 minutes:Compared with the model group,the writhing times of Th1 shifting group decreased significantly(P<0.01),while Th2 shifting group increased significantly(P<0.01).Compared with the blank group,the contents of PGF_(2α),TXB2,COX-2,AVP and OT were increased(P<0.05,P<0.01),and the contents of 6-keto-PGF_(1α)and PGE_(2)were decreased(P<0.01).Compared with the model group,the contents of PGF_(2α),TXB2,COX-2 and AVP in Th1 shifting group were decreased(P<0.05,P<0.01),and the contents of 6-keto-PGF_(1α)and PGE_(2)were increased(P<0.01),while the contents of PGF_(2α),TXB2,COX-2,AVP and OT in Th2 shifting group were increased(P<0.01),and the contents of 6-keto-PGF_(1α)and PGE_(2)were decreased(P<0.01).Conclusion:The intervention of Th1/Th2 cell balance on the expression of PGF_(2α),PGE_(2),6-keto-PGF_(1α),TXB2,COX-2,AVP and OT may be one of the pathogenesis of PD with cold coagulation and blood stasis syndrome.

Xiaoqinglong decoction reduces dendritic cell differentiation and regulates the Th1/Th2 balance in a mouse model of allergic asthma

Background:Xiaoqinglong decoction(XQLD)is a classic Chinese medicinal formula that is widely used to treat allergic asthma.Recently,the use of XQLD to treat allergic asthma has inspired research to determine its mechanism of action.Because dendritic cells(DCs)and the T helper 1(Th1)/Th2 cytokine balance play important roles in allergic asthma,the present work aimed to assess how these immune system components are affected by XQLD.Methods:Thirty-six female BALB/C mice were randomly divided into three groups:an ovalbumin-based allergic asthma model group,a XQLD treatment group,and a control group.Histology was performed with haematoxylin and eosin staining and immunohistochemical staining.Bronchoalveolar lavage fluid and blood were collected from the animals and used to analyze the composition of inflammatory cells and expression levels of the cytokines interleukin(IL)-5 and IL-13.The thymic stromal lymphopoietin(TSLP)protein expression was assessed by western blot analysis,and the Gata3 and Tbx21 mRNA levels were assessed by polymerase chain reaction.Results:Compared with the OVA group,the levels of TSLP expression,IL-5,IL-13,and immunoglobulin E in the XQLD group were lower(all P<.01).The level of IL-4-expressing cells(Th2 cells)was lower(P=.0013),and the percentage of IFN-g-expressing cells(Th1 cells)was higher in the XQLD group compared with those in the OVA group(P=.0065).In addition,XQLD increased the expression of Tbx21 mRNA and decreased the expression of Gata3 mRNA in the lungs compared with the OVA group(both P<.01).Conclusion:These findings suggest that XQLD may ameliorate the course of allergic asthma by regulating the Gata3/Tbx21 balance and inhibiting TSLP expression,changes which are indicative of an altered Th1/Th2 balance.Thus,the clinical effectiveness of XQLD in treating allergic asthma may be due to its regulation of Th1/Th2 balance.

Duchesnea Phenolic Fraction Inhibits Tumor Growth through Restoring the Th1/Th2 Balance in U14 Cervical Cancer Bearing Mice

Duchesnea indica (Andr.) Focke has been traditionally used to treat cancer in Asian countries for centuries. In the present study, transplanted U14 cervical cancer mouse model was used to evaluate the antitumor and immunomodulatory activity of Duchesnea phenolic fraction (DPF). ELISA and RIA assay were employed to measured the serum concentration of Th1/Th2 cytokines (IL-2, IL-4, IFN-γ and TNF-α). Administration with 0.25 g/kg, 0.5 g/kg and 1 g/kg DPF significantly reduced the tumor weight by 34.37%, 43.89% and 56.28%, respectively, as compared to the tumor control group. Furthermore, the serum level of IL-2, IFN-γ and TNF-α increased and IL-4 level decreased in a dose-dependent manner during DPF treatment, indicating that the antitumor activity of DPF may be associated with the decrease of TNF-α level and restoration of the balance of Th1/Th2 cell responses. These data suggested that DPF, a mixture of plant polyphenols, had potent anticancer activity which was in part accomplished by its immunomodulatory ability.

Effects of ephedra asarum aconite decoction on Th1/Th2 balance in two animal models of allergic rhinitis

Objective:Ephedra asarum aconite decoction is used in the clinical treatment of allergic rhinitis.We investigated the effects of ephedra asarum aconite decoction on Th1/Th2 balance in two animal models of allergic rhinitis and in activated T cells in vitro.Methods:Animal models of simple and compound kidney yang deficiency types of allergic rhinitis were treated with ephedra asarum aconite decoction to observe the efficacy of this traditional Chinese medicine formula on allergic symptoms,serum cytokines,and tissue RNA levels.We also cultured and activated T cells from the mouse.After treatment with ephedra asarum aconite decoction,we tested the proliferation and differentiation of T cells.Results:Ephedra asarum aconite decoction relieved allergy symptoms in both types of animal models,and was more effective in the compound kidney yang deficiency model In addition to its anti-allergic efficacy,ephedra asarum aconite decoction significantly improved the health status of animals in the compound kidney yang deficiency groups,significantly made their bodyweight rising up,and significantly increased the T-bet mRNA/GATA-3 mRNA ratio.Moreover,ephedra asarum aconite decoction promoted the proliferation of activated T cells and inhibited the differentiation to Th2 cells in vitro.Conclusions:Ephedra asarum aconite decoction regulates the balance of Th1/Th2 to ameliorate allergic conditions.

Correlation of Th1/Th2 balance in peripheral blood with cell apoptosis and invasion in decidual tissue in patients with recurrent spontaneous abortion

Objective:To study the correlation of Th1/Th2 balance in peripheral blood with cell apoptosis and invasion in decidual tissue in patients with recurrent spontaneous abortion (RSA). Methods: The subjects who were diagnosed with recurrent spontaneous abortion in Xiangyang Central Hospital between February 2015 and December 2017 were chosen as the RSA group, and the subjects who received early induced abortion in Xiangyang Central Hospital during the same period were chosen as the control group. The contents of Th1/Th2 cytokines and the expression of transcription factors in peripheral blood as well as the expression of apoptosis genes and invasion genes in decidual tissue were determined.Results: IL-2 and IFN-γ contents and T-bet expression in peripheral blood as well as CRT, Bax, Caspase-3, RECK and IL-1β mRNA expression in decidual tissue of RSA group were significantly higher than those of control group whereas IL-4 and IL-10 contents and GATA-3 expression in peripheral blood as well as HJURP, Bcl-2, HLA-G, MMP2, MMP9 and HOXA10 mRNA expression in decidual tissue were significantly lower than those of control group;IL-2 and IFN-γ contents as well as T-bet expression in peripheral blood of RSA group were negatively correlated with HJURP, Bcl-2, HLA-G, MMP2, MMP9 and HOXA10 mRNA expression in decidual tissue, and positively correlated with CRT, Bax, Caspase-3, RECK and IL-1β mRNA expression;IL-4 and IL-10 contents as well as GATA-3 expression in peripheral blood were positively correlated with HJURP, Bcl-2, HLA-G, MMP2, MMP9 and HOXA10 mRNA expression in decidual tissue, and negatively correlated with CRT, Bax, Caspase-3, RECK and IL-1β mRNA expression.Conclusion: The shift of Th1/Th2 balance to Th1 in peripheral blood of RSA patients may result in increased apoptosis and inhibited cell invasion in decidual tissues.

补肾固胎方联合黄体酮注射液治疗肾虚型早期先兆流产疗效及对妊娠激素水平和Th1/Th2细胞因子的影响

目的 观察补肾固胎方联合黄体酮注射液治疗肾虚型早期先兆流产疗效及对妊娠激素水平和Th1/Th2细胞因子的影响。方法 采用随机数字表法将符合入选标准的120例肾虚型早期先兆流产患者分为观察组和对照组。对照组予黄体酮注射液治疗,观察组同联合补肾固胎方治疗。连续治疗2周后,比较两组中医证候积分(妊娠期阴道流血、小腹坠胀或疼痛、腰酸痛、膝关节酸软)、妊娠激素水平[雌二醇(Estradiol, E_(2))、人绒毛膜促性腺激素(Human chorionic gonadotropin, β-HCG)、孕酮(Progesterone, P)]、Th1/Th2细胞因子[白细胞介素2(interleukin-2,IL-2)、白细胞介素4(interleukin-4,IL-4)、γ干扰素(Interferon-γ,INF-γ)]改善情况,统计两组治疗总有效率、妊娠结局及不良反应发生率。结果 两组治疗后妊娠期阴道流血、小腹坠胀或疼痛、腰酸痛、膝关节酸软积分,IL-2、INF-γ水平均低于治疗前(P<0.05),且观察组治疗后以上中医证候积分和IL-2、INF-γ水平均低于对照组(P<0.05);两组治疗后IL-4水平均高于治疗前(P<0.05),且观察组治疗后IL-4水平高于对照组(P<0.05);观察组总有效率为(91.7%,55/60),高于对照组(75.0%,45/60)(P<0.05);观察组足月分娩率为(85.0%,51/60),高于对照组(56.7%,34/60)(P<0.05);观察组不良反应发生率为3.3%,低于对照组(25.0%)(P<0.05)。结论 补肾固胎方联合黄体酮注射液能够有效调节肾虚型早期先兆流产患者妊娠激素水平和Th1/Th2细胞因子水平,纠正免疫功能紊乱,降低患者流产率,提高足月妊娠率,改善妊娠结局。

EZH2抑制剂对恶性淋巴瘤细胞放疗抵抗、Th细胞分化及PD1/PD-L1表达的作用机制

目的探究Zeste基因增强子同源物(EZH)2抑制剂对恶性淋巴瘤细胞放疗抵抗、Th细胞分化及程序性死亡(PD)1/PD1配体(PD-L1)表达的作用机制。方法取对数生长恶性淋巴瘤放疗抵抗细胞株将其分为恶性淋巴瘤(A)组、多柔比星(B)组、EZH2抑制剂(C)组、EZH2抑制剂联合PD1/PD-L1抑制剂(D)组,酶联免疫吸附试验(ELISA)及流式细胞仪检测Th细胞分化相关因子,Western印迹检测PD1/PD-L1蛋白表达,Hoechst33258染色法、噻唑蓝(MTT)法及小室法检测恶性淋巴瘤细胞活性。结果与A组相比,B、C、D组细胞凋亡率、干扰素(INF)-γ水平明显升高,细胞增殖率、侵袭数量、白细胞介素(IL)-4水平、PD1、PD-L1蛋白表达明显降低(P<0.05),且C组比B组变化更明显,D组比C组变化更明显(P<0.05)。结论EZH2抑制剂可显著抑制恶性淋巴瘤细胞放疗抵抗,有效调控Th细胞分化,并抑制PD1/PD-L1蛋白表达。

T淋巴细胞亚群、Th1/Th2细胞和血清SAA变化对急诊儿童急性重症肺炎心肌损伤的预测

目的分析T淋巴细胞亚群、辅助性T细胞1/辅助性T细胞2(Th1/Th2)和血清淀粉样蛋白A(SAA)对急诊儿童急性重症肺炎心肌损伤的预测价值。方法选取儿童急性重症肺炎心肌损伤60例为观察组,轻症肺炎50例为对照组,同期体检健康儿童58例为健康组。检测心肌损伤指标、免疫球蛋白(Ig)、淋巴细胞亚群(CD^(+))、动脉血气及乳酸清除率。分析急性重症肺炎心肌损伤的影响因素,以及各指标对急性重症肺炎患儿心肌损伤的预测价值。结果观察组和对照组CD3^(+)、CD4^(+)、Th1/Th2、IgA、IgM、IgG、氧分压(PaO 2)低于健康组,肌钙蛋白I、肌酸激酶同工酶(CK-MB)、SAA、CD8^(+)、CD19^(+)、CD23^(+)、CD40^(+)、乳酸清除率高于健康组,且观察组变化更为显著(P<0.05)。SAA、CD8^(+)、CD3^(+)、CD4^(+)、Th1/Th2是急性重症肺炎心肌损伤的影响因素(P<0.05)。T淋巴细胞亚群、Th1/Th2细胞和SAA联合预测急性重症肺炎心肌损伤的曲线下面积高于各指标单独应用(P<0.05)。结论T淋巴细胞亚群、Th1/Th2细胞和血清SAA对急诊儿童急性重症肺炎心肌损伤具有较高的预测价值。

儿童难治性肺炎支原体肺炎肺泡灌洗液病菌量与Th1/Th2细胞免疫应答的相关性研究

目的探究儿童难治性肺炎支原体肺炎肺泡灌洗液病菌量与Th1/Th2细胞免疫应答的相关性。方法随机选择郑州大学附属儿童医院诊治的96例难治性肺炎支原体肺炎患儿为研究对象,根据肺泡灌洗液中肺炎支原体DNA含量进行分组,即>106/m L为高菌量组(n=35),103~106/m L为中菌量组(n=30),<103/m L为低菌量组(n=31)。检测三组患儿肺泡灌洗液的炎性因子水平,对比三组的炎性因子水平、肺部影像学与实验室检查结果、临床表现和基础情况,分析肺泡灌洗液中肺炎支原体DNA含量与炎性因子的相关性。结果在体温高于39℃、热程高于10天患儿占比以及总发热时间、使用抗生素后热程、住院时间、乳酸脱氢酶、血小板计数、中性粒细胞计数、淋巴细胞计数上,三组比较差异有统计学意义(P<0.05),白细胞计数比较差异无统计学意义(P>0.05);双侧或大量胸腔积液、肺不张或者大片肺实变发生率、白细胞介素-4(interleukin-4,IL-4)水平比较,差异有统计学意义(P<0.05),三组之间的双侧肺病变、左侧肺病变、右侧肺病变发生率以及肿瘤坏死因子-α(tumor necrosis factor-α,TNF-α)、干扰素(interferon-γ,INF-γ)、IL-8水平比较差异无统计学意义(P>0.05);肺泡灌洗液中IL-4与肺炎支原体DNA水平呈正相关(P<0.05),肺泡灌洗液中TNF-α、INF-γ、IL-8与肺炎支原体DNA水平无相关性(P>0.05)。结论儿童难治性肺炎支原体肺炎肺泡灌洗液病菌量与Th1/Th2细胞免疫应答具有相关性,肺炎支原体DNA菌量越高,肺内外损害和肺部炎症越严重,Th1/Th2免疫应答失衡。

Th17/Treg、Th1/Th2联合NEWS2评分预测肺炎病情进展效能研究

目的研究辅助性T淋巴细胞17/调节性T淋巴细胞(Th17/Treg)、辅助性T淋巴细胞1/辅助性T淋巴细胞2(Th1/Th2)联合国家早期预警评分2(NEWS2)预测肺炎病情进展的效能。方法选取2020年4月—2023年3月收治的105例肺炎,根据病情进展情况分为未进展组、进展组,比较2组Th17/Treg、Th1/Th2、NEWS2评分,采用多因素Logistic回归分析建立多指标联合预测肺炎病情进展的模型,使用Stata 10.0软件确定最佳截断值及该位置的预测准确度,绘制受试者工作特征(ROC)曲线,用曲线下面积(AUC)评价各协变量及联合预测因子预测肺炎病情进展的效能。结果进展组Th17/Treg、NEWS2评分高于未进展组,Th1/Th2低于未进展组(P<0.01);Th17/Treg、NEWS2评分升高是肺炎病情进展的独立危险因素,Th1/Th2升高是肺炎病情进展的独立保护因素(P<0.01);将原始协变量拟合,生成新联合预测因子New-pre,其最佳截断值为0.102,此时预测准确率为97.00%;绘制ROC曲线显示,New-pre预测肺炎病情进展的AUC(0.916)高于Th17/Treg(0.704)、Th1/Th2(0.747)、NEWS2评分(0.819)(P<0.05)。结论肺炎病情进展患者Th17/Treg、NEWS2评分升高,Th1/Th2降低,三者联合可作为预测个体病情进展定量方案,可为临床治疗、病情进展评估提供参考依据。

参芪地黄汤联合羟氯喹治疗IgA肾病的疗效观察及对Th1/Th2平衡的影响

目的:观察参芪地黄汤联合羟氯喹(HCQ)治疗气阴两虚型IgA肾病(IgAN)的临床疗效及其对Th1/Th2平衡的影响。方法:将42例气阴两虚型IgA肾病患者随机分成观察组和对照组,各21例,对照组给予口服HCQ,观察组在对照组基础上另予参芪地黄汤,两组均连续干预8周。比较两组患者的临床疗效和治疗前后中医症状评分、常规生化指标[血肌酐(SCr)、白蛋白(Alb)]、24 h尿蛋白定量(24 h-uPQ)、细胞因子[γ干扰素(INF-γ)、白细胞介素-4(IL-4)、白细胞介素-10(IL-10)]及辅助性T淋巴细胞(Th)水平。结果:观察组临床总有效率(81.0%)高于对照组(57.1%)(P<0.05);治疗后两组患者各项中医症状评分均较治疗前降低,且观察组低于对照组(P<0.05);治疗后两组患者SCr、24 h-uPQ、INF-γ、Th1和Th1/Th2水平均较治疗前降低,且观察组低于对照组(P<0.05);治疗后两组患者Alb、IL-4、IL-10及Th2水平均较治疗前升高,且观察组高于对照组(P<0.05);结论:参芪地黄汤联合HCQ能明显改善气阴两虚型IgAN患者的临床症状,有效控制尿蛋白和延缓肾功能衰竭,调节免疫功能及缓解微炎症状态,临床疗效确切。

原发性肝癌患者TACE术后Th1/Th2细胞因子、VEGFR水平变化及其临床意义

目的探究原发性肝癌患者经肝动脉插管化疗栓塞术(TACE)治疗后Th1/Th2细胞因子、血管内皮生长因子受体(VEGFR)水平变化及其临床意义。方法选取接受TACE术治疗的原发性肝癌患者92例,根据治疗效果将完全缓解、部分缓解者纳入有效组(n=50),将疾病进展、疾病稳定者纳入无效组(n=42)。比较2组患者的一般临床资料及术前、术后血清Th1/Th2细胞因子水平[白介素-2(IL-2)、白介素-4(IL-4)、白介素-18(IL-18)]、VEGFR水平变化,采用Logistic回归模型进行分析上述指标与疗效的相关性,并通过ROC曲线预测分析上述指标术后水平对疗效的预测效能,比较各指标术后不同水平患者的无进展生存期差异。结果术后2组患者的IL-2、IL-4和VEGFR均较术前下降,且有效组显著低于无效组(P<0.05);术后2组患者的IL-18均较术前显著上升,且有效组显著高于无效组(P<0.05)。IL-2、IL-4、IL-18和VEGFR均与临床疗效具有显著相关性(P<0.05),ROC曲线显示,IL-2、IL-18、VEGFR的AUC值均有评估价值(P<0.05),而IL-4的ROC曲线AUC值评估价值不高(P>0.05)。IL-2、VEGFR高水平患者平均无进展生存期显著短于IL-2、VEGFR低水平患者(P<0.05),IL-18低水平患者无进展生存期显著短于IL-18高水平患者(P<0.05)。结论原发性肝癌患者在TACE术后Th1/Th2细胞因子免疫平衡得以纠正,VEGFR水平表现出下降,其中血清IL-2与VEGFR水平均与疗效及生存期密切相关,可在临床疗效及预后评估中提供参考。

二甲双胍联合炔雌醇环丙孕酮片对多囊卵巢综合征患者血清miR-124及Th1/Th2细胞因子平衡偏移的影响

目的探讨二甲双胍联合炔雌醇环丙孕酮片对多囊卵巢综合征(polycystic ovary syndrome,PCOS)患者血清miR-124水平及Th1/Th2细胞因子平衡偏移的影响。方法纳入2022年1月至2023年2月在攀枝花市妇幼保健院接受治疗的200例PCOS患者,分为观察组(n=100)和对照组(n=100);观察组给予二甲双胍联合炔雌醇环丙孕酮片治疗,对照组给予炔雌醇环丙孕酮片治疗,连续治疗3个月;收集两组患者临床资料,治疗前后血脂[总胆固醇(TC)、三酰甘油(TG)、低密度脂蛋白(LDL-C)]水平、空腹血糖(fasting plasma glucose,FPG)、空腹血清胰岛素(fins insulin,FINS)水平及胰岛素抵抗指数(HOMA-IR);检测血清miR-124、白细胞介素(IL)-2、IL-6、γ干扰素(interferon-γ,INF-γ)。结果治疗后观察组TG、TC、LDL-C水平显著降低(P<0.05);治疗后观察组TG、TC、LDL-C水平低于对照组(P<0.05);治疗前两组患者FPG、FINS、HOMA-IR比较差异无统计学意义(P>0.05),治疗后观察组FPG、FINS、HOMA-IR水平显著降低(P<0.05);且治疗后观察组FPG、FINS、HOMA-IR水平低于对照组(P<0.05);治疗前两组患者IL-2、IL-6、INF-γ及miR-124水平比较差异无统计学意义(P>0.05);治疗后观察组IL-6、INF-γ水平低于治疗前,IL-2、miR-124水平高于治疗前(P<0.05);治疗后观察组IL-6、INF-γ水平低于对照组,IL-2、miR-124水平高于对照组,差异有统计学意义(P<0.05)。结论二甲双胍联合炔雌醇环丙孕酮片能够明显改善PCOS患者胰岛素抵抗,调节糖脂代谢,改善Th1/Th2细胞因子平衡偏移状态。

脑组织GDF-15水平与脑梗死大鼠血管新生以及Th1/Th2免疫平衡轴的关系

目的:探讨脑组织GDF-15水平与脑梗死大鼠血管新生以及Th1/Th2免疫平衡轴的关系。方法:45只雄性SD大鼠随机分为脑梗死模型组、假手术组以及正常对照组,15只/组。模型组采用线栓法建立脑梗死模型,假手术组仅暴露颈内动脉后直接缝合皮肤,建模成功后1周评估大鼠改良神经功能缺损(mNSS)评分。采用HE染色检测脑组织病理学变化情况,Western blot法检测大鼠脑组织中组织生长分化因子-15(GDF-15)蛋白水平,RTPCR测定脑组织中GDF-15 mRNA水平。采用ELISA法检测脑组织INF-γ、IL-4表达情况,采用Spearman相关性分析大鼠脑组织中GDF-15蛋白、mRNA表达水平分别与mNSS评分、微血管密度(MVD)、INF-γ/IL-4水平之间的相关性。结果:模型组大鼠mNSS评分明显高于假手术组和正常对照组(P<0.001),模型组脑梗死面积比为(24.45±4.15)%,假手术组和正常对照组未发现脑梗死区域。模型组大鼠脑组织GDF-15蛋白、mRNA、MVD、INF-γ/IL-4水平均明显高于假手术组和正常对照组(P<0.05)。Spearman相关性分析显示,模型组大鼠脑组织中GDF-15蛋白、mRNA表达水平分别与mNSS评分、MVD、INF-γ/IL-4水平呈正相关关系(P<0.001)。结论:脑梗死大鼠脑组织中GDF-15处于高表达状态,且与神经功能密切关联,其作用机制可能与血管新生以及调控Th1/Th2免疫平衡轴有关。

布鲁氏菌病患者外周血中Siglec-7^(+)单核细胞与Th1/Th2细胞的相关性研究

目的:探讨布鲁氏菌病患者外周血中单核细胞的Siglec-7表达以及Siglec-7^(+)单核细胞与Th1/Th2细胞的相关性,分析Siglec-7分子在布鲁氏菌病患者中的临床意义。方法:纳入初诊为布鲁氏菌感染的患者50例(BI组),健康对照46例(正常对照组)。流式细胞术检测外周血单核细胞Siglec-7表达,分析Siglec-7^(+)单核细胞与布鲁氏菌病患者临床指标的相关性;流式细胞术检测Th1/Th2细胞水平,CBA法检测外周血清IFN-γ和IL-4含量,分析Siglec-7^(+)单核细胞与Th1/Th2水平、IFN-γ/IL-4含量的相关性。结果:BI组Siglec-7^(+)单核细胞水平较对照组明显升高(P<0.001);肝功能和肺X线异常的布鲁氏菌病患者体内Siglec-7^(+)单核细胞水平较两者正常的患者升高(P<0.001,P<0.05);Th2细胞水平和IL-4含量较对照组升高(P<0.05),而Th1细胞水平、IFN-γ含量与Th1/Th2、IFN-γ/IL-4较对照组明显降低(P<0.001);Siglec-7^(+)单核细胞水平与Th1细胞水平、IFN-γ含量呈负相关(r=-0.651,r=-0.407);与Th2细胞水平、IL-4含量呈正相关(r=0.706,r=0.530)。结论:在布鲁氏菌感染过程中,Siglec-7^(+)单核细胞增多并可能参与Th1/Th2细胞失衡。

痛泻安肠方对肠易激综合征小鼠短链脂肪酸代谢及Th1/Th2细胞免疫平衡的影响

目的观察痛泻安肠方对肝郁脾虚证腹泻型肠易激综合征(IBS-D)小鼠模型短链脂肪酸代谢及Th1/Th2细胞免疫平衡的影响。方法30只18~22 g的雄性C57BL/6小鼠随机分为空白组、模型组、痛泻安肠方低剂量组、痛泻安肠方中剂量组、痛泻安肠方高剂量组,每组6只。采用束缚应激联合番泻叶灌胃复制IBS-D小鼠模型,造模成功后分别予相应浓度中药灌胃14 d,每日1次,通过靶向代谢组学检测小鼠粪便中短链脂肪酸含量的变化,并通过流式细胞术检测肠系膜淋巴结中CD3+CD4+INF-γ+T细胞(Th1细胞)、CD3+CD4+IL-4+T细胞(Th2细胞)的占比情况。结果与空白组相比,模型组小鼠粪便短链脂肪酸(SCFAs)相对含量显著升高(P<0.01),尤其是乙酸、丙酸及丁酸的含量均显著升高(P<0.01或P<0.05);不同剂量痛泻安肠方治疗后,粪便总SCFAs相对含量显著降低(P<0.01),乙酸、丙酸及丁酸均有不同程度降低,其中痛泻安肠方各剂量组均可显著降低乙酸和丁酸的含量,差异具有统计学意义(P<0.01),低剂量组及中剂量组可显著降低丙酸的含量,差异具有统计学意义(P<0.01)。造模后,肠易激综合征小鼠肠系膜淋巴结的Th2细胞占比明显降低,而Th1细胞占比及Th1/Th2细胞比率明显升高,差异具有统计学意义(P<0.05);治疗后,痛泻安肠方各剂量组Th2细胞占比均有升高,Th1细胞占比及Th1/Th2细胞比率降低。结论痛泻安肠方可以降低IBS-D小鼠粪便SCFAs的含量,调节小鼠Th1/Th2细胞免疫紊乱。

TIM-1-Fc融合蛋白对哮喘小鼠Th1/Th2和Th17/Treg免疫失衡的调节

目的制备T细胞免疫球蛋白和黏蛋白结构域1(T cell immunoglobulin domain and mucin domain protein-1,TIM-1)-Fc融合蛋白并探讨TIM-1-Fc融合蛋白对卵白蛋白(ovabumin,OVA)诱导的哮喘小鼠的干预作用及潜在作用机制。方法通过基因工程技术获得TIM-1-Fc融合蛋白。采用腹腔注射OVA氢氧化铝溶液致敏建立过敏性哮喘小鼠模型,随机分为对照组、哮喘组和TIM-1-Fc干预组。每次干预前20 min,使用40μL卵白蛋白生理盐水溶液(OVA-NS)滴鼻,TIM-1-Fc融合蛋白干预包括TIM-1-Fc滴鼻组(每只小鼠每次给予1μg/40μL TIM-1-Fc滴鼻)和TIM-1-Fc注射组(每只小鼠每次给予6μg/200μL TIM-1-Fc腹腔注射),每天1次,连续7 d,对照组用生理盐水替代。采用苏木精-伊红(HE)染色观察肺组织病理变化;采用流式细胞术检测小鼠外周血中辅助性T细胞2(type 2 T helper cells,Th2)、辅助性T细胞17(type 17 T helper cells,Th17)和调节性T细胞(Treg)比例及相关细胞因子水平。结果成功构建TIM-1-Fc融合蛋白,成功构建OVA诱导的过敏性哮喘小鼠模型。与哮喘组相比,TIM-1-Fc融合蛋白干预后显著减轻了哮喘小鼠气道炎性损伤和肺组织损伤;TIM-1-Fc融合蛋白干预能显著降低外周血中TIM-1^(+)CD4^(+)T细胞和TIM-1^(+)Th17细胞比例,使TIM-1^(+)Treg细胞增多,显著降低Th2、Th17细胞比例,提高Treg细胞比例,调节哮喘中Th1/Th2和Th17/Treg免疫失衡。结论TIM-1-Fc融合蛋白改善OVA诱导的过敏性哮喘小鼠气道炎症和肺组织损伤,其作用机制可能与TIM-1-Fc融合蛋白对Th1/Th2和Th17/Treg的免疫调节有关。