Detection and Clinical Significance of Th17/Treg Cell-Related Factors in Patients with Gestational Diabetes Mellitus

Objective:To investigate the detection of Th17/Treg cell-related factors in patients with gestational diabetes mellitus(GDM)and its clinical significance.Methods:In this study,a retrospective cohort research method was used to collect the clinical data of 42 patients who were hospitalized in the Affiliated Hospital of Hebei University and received the diagnosis of GDM from January 2018 to December 2022,as well as 42 patients with normal pregnancies during the same period.The Th17/Treg expression levels and metabolism-related indexes in the peripheral blood of patients were detected by radioimmunoassay.Results:The relative expression of Th17 in the serum of patients in the GDM group was significantly higher than that of the control group,and the level of Treg was significantly lower than that of the control group(P<0.05);the levels of FBG,FINS,2hBG,TC,TG and HOMA-IR of the patients in the GDM group were significantly higher than that of the control group,and the level of HOMA-βwas significantly lower than that of the control group(P<0.05).Conclusion:The imbalance of the Th17/Treg cell ratio in patients with GDM may be related to their disease progression and prognosis,providing new ideas and strategies for the clinical treatment of GDM.

Correlation between CD4^＋CD25^＋Treg Cells and CCR4 in Nasopharyngeal Carcinoma

OBJECTIVE CD4^＋CD25^＋ T regulatory （Treg） cells are a population of T cells which suppress an overactive immune system. CCR4 is a chemokine receptor involved in the recruitment of lymphocytes. Nasopharyngeal carcinoma （NPC） is resistant to immunosurveillance, owing to the increased number of tumor-infiltrating Treg cells which are recruited to the tumor bv CCR4.

The effect of spleen on the change of Treg cells during mouse pregnancy

Objective:To analyze the effect of spleen on the Treg cells during pregnancy. Methods: The mononuclear cells were separated from the peripheral, spleen and uterus or placenta blood. Flow cytometry was employed to analyze the percent of Treg cells in total T cells in different stages of pregnancy. Immunohistochemical staining was used to make sure the distribution of Treg in spleen in different stages of pregnancy. Results: The results of immunohistochemical staining showed that compared with spleen Treg cells in normal unpregnant mice, spleen Treg cells on day 7 and 14 of pregnancy significantly increased. After splenectomy, peripheral blood and placenta Treg cells on day 7 of pregnancy markedly decreased as compared with the normal pregnancy(P<0.01). And the cells on day 14of pregnancy were markedly recovered as compared with the normal pregnancy. Conclusion: Our study indicated that the spleen and its Treg cells might play important roles in transient tolerance during pregnancy.

Mechanism of Liancao-Xieli capsule in the treatment of ulcerative colitis through the differentiation of Th17 and Treg cells

Objective:To observe the effect of Liancao-Xieli Capsule on STAT signal pathway and T cell differentiation in mouse model of ulcerative colitis;Methods:Forty BALB/c mice were randomly divided into the control group,model group,mesalazine group and Liancao-Xieli capsule group.Except the control group,the other three groups were treated with 3%dextran sodium sulfate free drinking water to construct the model of ulcerative colitis.During the modeling period,each group was given corresponding drugs for intervention,while the control group and the model group were given the same volume of distilled water by gavage as the control.After treatment,HE staining was used to observe the pathological changes of colon tissue,flow cytometry was used to detect the proportion of Th17 and Treg cells in spleen and mesenteric lymph nodes,and ELISA was used to detect TGF-β,IL-6 and IL-17A in colon tissue.Western blot was used to detect the expression levels of related proteins in STAT3/ROR-γt and STAT5/Foxp3 signaling pathways.Results:Compared with the model group,the body weight,colon length and the content of TGF-βin the colon tissue of the mice in the Liancao-Xieli capsule group increased significantly after the experiment,while the DAI score,colon histopathology score,and the contents of IL-6 and IL-17A in the colon tissue were significantly reduced,and the difference was statistically significant(P<0.01).At the same time,Liancao-Xieli capsule can reduce the ratio of Th17 cells and the ratio of Th17/Treg in the spleen and mesenteric lymph node tissues of UC mice,and increase the ratio of Treg cells,and the difference is statistically significant when compared with the model group(P<0.01).In addition,compared with the model group,the expression levels of p-STAT3 and RORγt protein in the colon tissue of the Liancao-Xieli capsule group were significantly reduced,and the expression levels of p-STAT5 and Foxp3 protein were significantly increased after treatment,and the differences are statistically significant(P<0.01),while the expression levels of STAT3 and STAT5 proteins in colon tissue did not change significantly,and the difference was not statistically significant(P>0.05);Conclusion:Liancao-Xieli Capsule can regulate the immune balance of Treg/Th17 and improve the intestinal inflammation of UC.Its mechanism of action is mainly through inhibiting STAT3/ROR-γt and promoting the activation of STAT5/Foxp3 signaling pathway.

Effects of GW5074 in the process of imDCs inducing differentiation of naive CD4^+ T cells into Treg cells in vitro

Objective To establish a stable and efficient method of culturing imDCs in vitro,and to explore the effect of GW5074,which blocks ERK1 /2 signal pathway in the process of immature dentritic cells ( imDCs) on inducing differentiation of the naive allogeneic CD4 + T

Restoring the Treg cell to Th17 cell ratio may alleviate HBV-related acute-on-chronic liver failure

AIM: To investigate the role of T helper 17 cells (Th17) and regulatory T cells (Treg) in hepatitis B virus (HBV)-related acute-on-chronic liver failure (ACLF).METHODS: We enrolled 79 patients with HBV infection into the study, 50 patients with HBV-related ACLF and 29 patients with chronic hepatitis B (CHB), from the First Affiliated Hospital of Medical College from January 2009 to June 2012. The ACLF patients were diagnosed according to the criteria recommended by The 19th Conference of the Asian Pacific Association for the Study of the Liver in 2009. Twenty healthy individuals with a similar gender and age structures to the two patient groups were also included as the normal controls (NC). Of the 50 ACLF patients, 28 were subsequently classified as non-survivors: 19 patients died from multiorgan failure, 3 underwent liver transplantation, and 6 discontinued therapy during follow-up because of financial reasons. The remaining 22 ACLF patients whose liver and anticoagulation function recovered to nearly normal levels within the next 6 mo were classified as survivors. The number of circulating Treg and Th17 cells was determined upon diagnosis and during the 8th week of follow-up through flow cytometry. RESULTS: The percentage of circulating Treg cells in the ACLF group was significantly higher than that in the CHB group (5.50% ± 1.15% vs 3.30% ± 1.13%, P < 0.01). The percentages of circulating Th17 cells in the ACLF and the CHB groups were significantly higher than that in the NC group (6.32% ± 2.22% vs 1.56% ± 0.44%, P < 0.01; 3.53% ± 1.65% vs 1.56% ± 0.44%, P < 0.01). No significant difference in Treg cell to Th17 cell ratio was observed between the ACLF group and the CHB group (0.98 ± 0.44 vs 1.12 ± 0.64, P = 0.991), whereas those in the two HBV infection groups were significantly lower than that in the NC group (1.85 ± 1.22; both P < 0.01). The percentage of Treg cells in the survivors during the 8th week of follow-up was significantly lower than that during peak ACLF severity [total bilirubin (TBIL) peak] (3.45% ± 0.97% vs 5.18% ± 1.02%, P < 0.01). The percentage of Th17 cells in survivors during the 8th week of follow-up was significantly lower than that during the peak TBIL (2.89% ±0.60% vs 5.24% ± 1.46%; P < 0.01). The Treg cell to Th17 cell ratio during the 8 th week of follow-up was significantly higher than that during the TBIL peak (1.22 ± 0.36 vs 1.10 ± 0.54; P < 0.05). CONCLUSION: Restoring the Treg cell to Th17 cell ratio during the follow-up phase of ACLF could maintain the immune system at a steady state, which favours good prognosis.

Effects of early enteral nutrition on Th17/Treg cells and IL-23/IL-17 in septic patients

BACKGROUND The imbalance of Th17/Treg cells and the IL-23/IL-17 axis have been confirmed to be associated with sepsis and various inflammatory diseases. Early enteral nutrition (EEN) can modulate the inflammatory response, improve immune dysfunction, and prevent enterogenic infection in critically ill patients;however, the precise mechanisms remain unclear. Considering the important roles of Th17 and Treg lymphocytes in the development of inflammatory and infectious diseases, we hypothesized that EEN could improve the immune dysfunction in sepsis by maintaining a balanced Th17/Treg cell ratio and by regulating the IL- 23/IL-17 axis. AIM To investigate the effects of EEN on the Th17/Treg cell ratios and the IL-23/IL-17 axis in septic patients. METHODS In this prospective clinical trial, patients were randomly divided into an EEN or delayed enteral nutrition (DEN) group. Enteral feeding was started within 48 h in the EEN group, whereas enteral feeding was started on the 4th day in the DEN group. The Th17 and Treg cell percentages and the interleukin levels were tested on days 1, 3, and 7 after admission. The clinical severity and outcome variables were also recorded. RESULTS Fifty-three patients were enrolled in this trial from October 2017 to June 2018. The Th17 cell percentages, Th17/Treg cell ratios, IL-17, IL-23, and IL-6 levels of the EEN group were lower than those of the DEN group on the 7th day after admission (P < 0.05). The duration of mechanical ventilation and of the intensive care unit stay of the EEN group were shorter than those of the DEN group (P <0.05). However, no difference in the 28-d mortality was found between the two groups (P = 0.728). CONCLUSION EEN could regulate the imbalance of Th17/Treg cell ratios and suppress the IL- 23/IL-17 axis during sepsis. Moreover, EEN could reduce the clinical severity of sepsis but did not reduce the 28-d mortality of septic patients.

Correlation between microRNA-21 and expression of Th17 and Treg cells in microenvironment of rats with hepatocellular carcinoma

Objective: To study the correlation between mi R-21 and Treg/Th17 ratio in the microenvironment of rats with hepatocellular carcinoma. Methods: Diethylnitrosamine was used to build the hepatocel ular carcinoma model of rats; the content of Treg cells and Th17 cells and the expression of mi R-21 in the peripheral blood of rats with hepatocellular carcinoma were detected. The statistical analysis was performed on the correlation between mi R-21 expression and Treg/Th17 ratio. Results: Hepatocellular carcinoma model of rats was successfully constructed. The proportion of Th17 cells among all CD4+T cells in the peripheral blood of rats with hepatocellular carcinoma was 5.319%, which was higher than the control group; while the proportion of Treg cells was 9.472%, which was higher than the control group. Treg/Th17 ratio in the model group was 1.781, compared with 1.478 in the control group. The expression of mi R-21 was increased in the peripheral blood of rats with hepatocellular carcinoma and it showed a positive correlation with the ratio of Treg/Th17. Conclusions: There is a positive correlation between the expression level of miR-21 and the ratio of Treg/Th17.

The Research of Treg Cells: Progress and Challenge

T regulatory cells (Tregs) play an important role in the induction and maintenance of immunological tolerance to self and alloantigens. Recent findings in experimental transplant models have demonstrated that Treg could control and delay allograft rejection. Induction of immune tolerance decreases the risk of acute and chronic graft rejection after solid organ transplantation and can improve transplanted organ survival. Tregs are being tested in trials as a potential therapy in cell and solid organ transplantation. However, as we know, regulatory T cells (Tregs) are crucial for peripheral tolerance and are intimately involved in cancer. The influence of Tregs on cancer progression has been demonstrated in a large number of preclinical models and confirmed in several types of malignancies. Neoplastic processes trigger an increase of Treg numbers in draining lymph nodes, spleen, blood, and tumors, leading to the suppression of anti-tumor responses. In this review, we summarize some of the critical aspects of the immunoregulatory function of Treg cells in cancer and transplantation and discuss their potential research progress and challenge.

芍药苷对慢性支气管炎模型大鼠Th17及Treg细胞亚群的影响

目的:探究芍药苷对慢性支气管炎(CB)大鼠Th17、Treg细胞亚群、肺功能的影响以及药理作用。方法:将SD大鼠采用复合诱导法建立CB模型,随机分成CB组(生理盐水)、低剂量芍药苷组(50 mg/kg)、中剂量芍药苷组(100 mg/kg)、高剂量芍药苷组(200 mg/kg)和核酪组(阳性对照,核酪口服液),10只;另设对照组(生理盐水)10只,造模后按照分组灌胃2 ml/100 g相应药物。给药完成后,观察大鼠一般情况并进行肺功能及血气分析;HE染色观察肺组织形态;流式细胞仪检测大鼠肺组织CD4^(+)T、CD8^(+)T、Th17(CD4^(+)IL-17^(+)T)、Treg(CD4^(+)CD25^(+)FOXP3^(+)T)细胞;ELISA法检测肺组织中IL-10、IL-22、IL-17水平。结果:CB组大鼠活动迟缓,毛色暗淡,身体卷缩,伴咳嗽、鼻腔潮湿,肺组织可见淋巴细胞浸润、支气管壁变形、黏膜阻塞等病变;芍药苷各组及核酪组上述症状及损伤不同程度缓解,高剂量组最轻。与对照组比较,CB组气道阻力、动脉血二氧化碳分压(Pa‐CO_(2))、IL-17、IL-22水平及CD4^(+)T、CD8^(+)T、Th17细胞、Th17/Treg、CD4^(+)T/CD8^(+)T均升高,动脉血氧分压(PaO_(2))、IL-10水平及Treg细胞均降低(P均<0.05);与CB组比较,低、中、高剂量芍药苷组气道阻力、PaCO_(2)、IL-17、IL-22水平及CD4^(+)T、CD8^(+)T、Th17细胞、Th17/Treg、CD4^(+)T/CD8^(+)T水平依次降低,PaO_(2)、IL-10水平及Treg细胞依次升高(P均<0.05);中剂量芍药苷组气道阻力等以上指标与核酪组相比差异无统计学意义(P均>0.05)。结论:芍药苷可调节T淋巴细胞活化,减少Th17细胞分化,增加Treg细胞分化,减轻CB大鼠炎症水平及肺损伤。

基于正邪理论探讨Th17/Treg细胞在慢性心衰中的作用

慢性心力衰竭是多种心血管疾病的终末期阶段,心肌损伤后,免疫介导的Th17、Treg细胞在心衰的发病机制具有关键作用,通过分泌炎症因子,导致心肌纤维化、心室重塑。中医正邪理论内涵丰富,对于认识Th17/Treg细胞与心衰的发展及相互作用具有指导意义,隶属于正邪理论范畴,即Th17/Treg细胞平衡,有利于维持机体的免疫平衡,属于“正气”范畴;Th17/Treg细胞失衡可能破坏机体内环境的稳定,导致免疫异常,促进疾病的发生,属于“邪气”范畴。基于此,作者以正邪理论为切入点,从宏观、微观角度来阐述Th17/Treg细胞在慢性心力衰竭发展中的作用,提出心衰早期,正虚为主,邪实为辅;心衰中期,正虚邪实;心衰晚期,邪实为主,正虚为辅;心衰终末期,正虚为主。临床通过扶正祛邪,调整机体正邪平衡,恢复机体Th17/Treg细胞的动态平衡,以期为中医理论阐述Th17/Treg在心衰的发展作用的现代研究奠定基础,为心衰的诊治提供新的理论依据。

血清HSP60、HSP70水平与原发性免疫性血小板减少症患儿Th17/Treg细胞和预后的关系

目的分析血清热休克蛋白60(HSP60)、热休克蛋白70(HSP70)与原发性免疫性血小板减少症(ITP)患儿辅助性T细胞17/调节性T细胞(Th17/Treg)和预后的关系。方法选取2020年6月—2022年6月保山市人民医院儿科诊治的ITP患儿128例作为病例组,另选同期体检健康儿童60例作为健康对照组。检测并比较2组血清HSP60、HSP70与Th17/Treg细胞水平。Pearson法分析血清HSP60、HSP70与Th17/Treg细胞的相关性。ITP患儿出院后随访1年,根据不同预后情况分为预后良好亚组(107例)和预后不良亚组(21例)。收集ITP患儿的临床资料,采用单因素、多因素Logistic回归模型分析ITP患儿预后的影响因素,并构建风险预测列线图模型。建立受试者工作特征(ROC)曲线分析血清HSP60、HSP70与Th17/Treg细胞对ITP患儿预后的预测价值。结果病例组血清HSP60、HSP70水平及Th17/Treg细胞显著高于健康对照组(t/Z/P=20.445/<0.001、17.467/<0.001、5.823/<0.001)。Pearson相关分析显示,血清HSP60、HSP70与Th17/Treg细胞呈正相关(r/P=0.417/<0.001、0.348/<0.001)。多因素Logistic回归分析显示,HSP60高、HSP70高、Th17/Treg高为ITP患儿预后不良的独立危险因素[OR(95%CI)=1.177(1.041~1.331),1.181(1.038~1.343),9.895(2.171~68.177)],初诊时PLT计数偏高则为保护因素[OR(95%CI)=0.848(0.726~0.990)]。ROC曲线分析结果显示,初诊时PLT、HSP60、HSP70、Th17/Treg水平及列线图模型的曲线AUC分别为0.793、0.730、0.787、0.840、0.975;Bootstrap法(B=1000)对列线图模型进行内部验证显示,Bias-corrected预测曲线与Ideal线基本重合,该模型预测能力较好。决策曲线显示,该模型的阈值概率范围为0.01~0.98,其净收益率>0,高于两条无效线。结论IPT患儿血清HSP60、HSP70、Th17/Treg水平均明显升高,血清HSP60、HSP70与Th17/Treg呈显著正相关。初诊时PLT、HSP60、HSP70、Th17/Treg水平是ITP患儿预后不良的影响因素,且基于HSP60、HSP70等独立危险因素构建的列线图模型对ITP患儿预后不良具有较好的预测价值。

外周血CD4^(+)CD25^(+)Treg细胞、TLR4、hCMV-IgM与动脉粥样硬化型急性脑梗死患者颈动脉粥样硬化的关系

目的探讨外周血CD4^(+)CD25^(+)Treg细胞、TLR4、人巨细胞病毒(hCMV)-IgM与动脉粥样硬化型急性脑梗死(As-ACI)患者颈动脉粥样硬化的关系。方法选取89例As-ACI患者(脑梗死组),另选取健康体检者43例(对照组)。根据颈内动脉超声结果将As-ACI患者分为内膜正常组、内膜增厚组、斑块组、狭窄组。比较各组外周血CD4^(+)CD25^(+)Treg细胞水平、单个核细胞TLR4表达水平、hCMV-IgM抗体阳性率和内膜中膜厚度(IMT)。分析As-ACI患者颈动脉狭窄的危险因素,分析CD4^(+)CD25^(+)Treg细胞、TLR4与IMT的相关性及其对颈动脉狭窄的预测价值。结果脑梗死组CD4^(+)CD25^(+)Treg细胞、HDLC水平低于对照组,TLR4表达、hCMV-IgM抗体阳性率、TC、TG、LDLC、hs-CRP水平、IMT高于对照组(P<0.05)。内膜正常组、内膜增厚组、斑块组、狭窄组CD4^(+)CD25^(+)Treg细胞水平依次降低,TLR4表达、hCMV-IgM抗体阳性率、IMT依次增高(P<0.05)。CD4^(+)CD25^(+)Treg细胞水平与IMT呈负相关,TLR4表达与IMT呈正相关(P<0.05)。高血压、CD4^(+)CD25^(+)Treg表达、TLR4表达、hCMV-IgM抗体阳性是As-ACI患者颈动脉狭窄的危险因素(P<0.05)。CD4^(+)CD25^(+)Treg细胞、TLR4表达水平联合检测的预测价值高于单独检测(P<0.05)。结论外周血CD4^(+)CD25^(+)Treg细胞、TLR4、hCMV-IgM抗体阳性率与As-ACI患者颈动脉粥样硬化进展有关,外周血CD4^(+)CD25^(+)Treg细胞、TLR4联合可以较好预测病变过程。

Huoxue Tongjiang decoction-resisted reflux esophagitis by activation stem cell factor/c-kit/interstitial cell of cajal pathway and regulating the T-helper 17/regulatory T-cells balance in rats

Background:Huoxue Tongjiang decoction(HXTJD)is an effective prescription for treating reflux esophagitis(RE).We investigated the effects of HXTJD on esophageal motility and mucosal inflammation in a rat RE model.Methods:Chemical composition of HXTJD was analyzed by ultrahigh-performance liquid chromatography Q-Orbitrap mass spectrometry(MS).The change rates of mean contraction tension forces,mean amplitudes,and mean frequencies for the lower esophageal sphincter(LES)were recorded using the isolated tissue bath system,mechanical tension transducer,and PowerLab physiological recorder.After weighing the stomach,the phenol red labeling method was used to measure the gastric emptying rate.The LES ultrastructure was observed through transmission electron microscopy.Immunofluorescence and western blotting were used to detect the number of interstitial cells of Cajal(ICC)and the expression levels of c-kit protein,connexin43(Cx43),and stem cell factor(SCF).Flow cytometric analysis and enzyme-linked immunosorbent assay were conducted to detect the percentages of T helper 17(Th17)cells and regulatory T(Treg)cells and the serum concentrations of interleukin 6(IL-6),interleukin 17(IL-17),and interleukin 10(IL-10)in the rats.Results:We identified 28 chemical constituents in HXTJD.Regarding esophageal motility,we revealed that HXTJD increased the mean contraction tension forces,mean amplitudes,and mean frequency change rate of LES and the gastric emptying rate;decreased stomach weight;and improved the LES ultrastructure.Additionally,HXTJD increased the number of ICC-positive cells,and c-kit,Cx43,and SCF expression levels.Regarding esophageal inflammation,HXTJD significantly decreased the percentage of Th17 cells,and IL-6 and IL-17 concentrations,and increased the percentage of Treg cells and IL-10 concentration.Conclusion:HXTJD was found to be efficacious in the rat RE model.It may promote esophageal motility and alleviate the inflammatory response by activating the SCF/c-kit/ICC pathway and regulating the Th17/Treg cell balance.

苦参碱调节RhoA-ROCK信号通路对冠心病模型大鼠Th17/Treg细胞平衡的影响

目的探讨苦参碱(Matrine)对冠心病(coronary heart disease,CHD)大鼠辅助T细胞17(helper T cell 17,Th17)/调节性T细胞(regulatory T cells,Treg)细胞平衡及Ras同源基因家族成员A(RhoA)-Rho相关的卷曲螺旋激酶(ROCK)信号通路的影响。方法建立冠心病模型,将实验大鼠分为对照组、模型组、苦参碱低剂量(50 mg·kg^(-1))组、苦参碱高剂量(200 mg·kg^(-1))组及苦参碱高剂量(200 mg·kg^(-1))+LPA组(10 mg·kg^(-1))。超声心动图进行大鼠心功能检测;酶联免疫吸附试验(enzyme linked immunosorbent assay,ELISA)法进行白细胞介素17(IL-17)、转化生长因子β(TGF-β)水平检测;流式细胞术检测Th17、Treg数量及Th17/Treg比值;免疫组化进行内皮型一氧化氮合酶(eNOS)、内皮素1(ET-1)蛋白表达水平检测;Masson染色进行大鼠心肌组织的病理形态变化观察;TTC染色检测各组大鼠心肌梗死情况;TUNEL染色进行心肌组织中细胞凋亡情况检测;试剂盒检测RhoA活性;Western Blot法进行半胱氨酸天冬氨酸蛋白酶3(Caspase-3)、B细胞淋巴瘤因子2(Bcl-2)、Bcl-2相关X蛋白(Bax)、RhoA、ROCK1、ROCK2蛋白表达水平检测。结果与对照组比较,模型组心肌组织有大量蓝色胶原纤维沉积,左室舒张末期容积(left ventricular end-diastolic volume,LVEDV)、左室收缩末期容积(left ventricular end-systolic volume,LVESV)、IL-17、Th17、Th17/Treg、ET-1、心肌梗死面积、细胞凋亡率、TUNEL阳性率、Bax、Caspase-3、RhoA活性、RhoA、ROCK1、ROCK2表达水平明显升高,左室射血分数(left ventricular ejection fraction,LVEF)、左室缩短分数(left ventricular shortening fraction,LVFS)、TGF-β、Treg、eNOS、Bcl-2表达水平明显降低(P<0.05)。与模型组比较,Matrine-L组、苦参碱高剂量组心肌组织蓝色胶原纤维逐渐减少,LVEDV、LVESV、IL-17、Th17、Th17/Treg、ET-1、心肌梗死面积、细胞凋亡率、TUNEL阳性率、Bax、Caspase-3、RhoA活性、RhoA、ROCK1、ROCK2表达水平依次明显降低,LVEF、LVFS、TGF-β、Treg、eNOS、Bcl-2表达水平依次明显升高(P<0.05)。与苦参碱高剂量组比较,苦参碱高剂量+LPA组心肌组织蓝色胶原纤维增多,LVEDV、LVESV、IL-17、Th17、Th17/Treg、ET-1、心肌梗死面积、细胞凋亡率、TUNEL阳性率、Bax、Caspase-3、RhoA活性、RhoA、ROCK1、ROCK2表达水平明显升高,LVEF、LVFS、TGF-β、Treg、eNOS、Bcl-2表达水平明显降低(P<0.05)。结论苦参碱通过抑制RhoAROCK信号通路调节Th17/Treg细胞平衡,改善冠心病大鼠心肌损伤。

中医药治疗复发性流产的疗效及调节外周血Th17、Treg细胞水平的Meta分析

目的系统评价中医药治疗复发性流产及调节外周血辅助性T细胞(T helper cell 17,Th17)和调节性T细胞(regulatory T cells,Treg)水平的疗效。方法计算机检索中国知网(CNKI)、万方数据库(Wanfang)、维普数据库(VIP)、中国生物医学文献数据库(SinoMed)、外文医学信息资源检索平台(FMRS)、PubMed、Cochrane Library、Embase、Web of science等数据库,筛选自建库至2023年6月公开发表的与中医药调控Th17、Treg细胞治疗复发性流产相关的随机对照试验(RCT)。由2名评价者按照Cochrane手册评价文献质量,应用RevMan 5.4软件进行Meta分析。结果纳入10项研究,共计1052例患者。Meta分析结果显示,相较于对照组,试验组患者孕后应用中药治疗可显著提高有效率[RR=1.20,95%CI(1.11,1.30),P<0.00001]和活产率[RR=1.32,95%CI(1.16,1.50),P<0.00001],减少药物不良反应[RR=0.34,95%CI(0.14,0.83),P=0.02]。中药治疗后,Th17细胞表达降低[MD=-0.71,95%CI(-1.01,-0.41),P<0.00001],Treg细胞表达升高[SMD=1.21,95%CI(0.80,1.62),P<0.00001],Th17/Treg细胞比值下降[SMD=-2.62,95%CI(-4.09,-1.14),P=0.0005]。结论中医药孕后或孕前、孕后同时治疗可明显改善复发性流产患者的临床症状,提高活产率,且安全性较高。同时,中医药可降低Th17细胞表达,上调Treg细胞表达,调节Th17/Treg细胞免疫平衡,有利于妊娠后胚胎发育。

Predictive value of Th17 and Treg cells at baseline for HBsAg loss in chronic hepatitis B patients with low HBsAg quantification treated with pegylated interferon and nucleos(t)ide analogue

Background and aims:The primary goal of chronic hepatitis B(CHB)treatment is to reduce hepatitis B surface antigen(HBsAg).T helper 17(Th17)and regulatory T(Treg)cells are essential for the development of CHB.However,how Th17 and Treg cells contribute to HBsAg loss is still unknown.Therefore,this study aimed to search for the predictive value of Th17 and Treg cells for HBsAg loss in CHB patients with low HBsAg quantification.Methods:The study included 99 hepatitis B e antigen(HBeAg)-negative CHB patients who had completed a year of nucleos(t)ide analogue(NA)monotherapy and had received both NA and pegylated interferon(PEG-IFN)treatment for less than 96 weeks(96 wk).In the cured group,48 patients lost HBsAg within 48 wk,while 51 patients did not(uncured group).Blood samples and clinical data were collected for research.Results:During PEG-IFN and NA combination therapy,the proportion of Th17 cells in the cured group increased significantly,while the proportion of Treg cells in the uncured group increased.From 0 to 24 wk,the proportion of Th17 cells in the cured group was significantly higher than in the uncured group,while the opposite was true for Treg cells.Patients with alanine aminotransferase(ALT)2.5 upper limit of normal(ULN)at 12 wk had a higher proportion of Th17 cells and a lower proportion of Treg cells than those with ALT<2.5 ULN at 12 wk.Additionally,the proportion of Th17 cells is inversely associated with the level of HBsAg,whereas the level of Treg cells is positively related to HBsAg quantification.The clinical cure index,including age,HBsAg quantification,and the proportions of Th17 and Treg cells,had a higher area under the curve(0.957)for predicting HBsAg loss when compared to the proportions of Th17 and Treg cells and HBsAg quantification alone.Conclusions:Combined with quantification of HBsAg,the proportions of Th17 cells and Treg cells at baseline can be used as good predictors of HBsAg loss in patients with low HBsAg quantification treated with NA and PEG-IFN.

基于Th17/Treg细胞失衡浅析温阳发汗法治疗白癜风

白癜风易诊难治,是皮肤科的疑难杂病,发病率呈逐年上升的趋势。当前研究认为免疫学说在白癜风的发病机制占据重要地位,特别是辅助性T细胞17(Th17)和调节性T细胞(Treg)间的免疫失衡,已成为近些年的研究热点之一。汗法作为八法之首,可以调和营卫,开泄肌腠,常作为皮肤疾病的治疗法则。古代典籍中亦有白为寒的论述,说明白癜风的治疗可从寒论治。现代研究认为热刺激能够改善血液运行,促进局部微循环,增强酪氨酸酶的活性,从而提高白癜风患者皮损部位的复色率。文章从Th17/Treg细胞失衡的角度探讨了温阳发汗法治疗白癜风,以期为临床治疗提供理论依据与参考。

青稞β葡聚糖恢复Th17/Treg细胞平衡维持小鼠肠道功能

肠道免疫系统需要执行复杂的任务,如提供快速、特异性的免疫反应以防御病原微生物并维持对肠道内容物的免疫耐受性。维持肠道免疫平衡对肠道稳态至关重要,而溃疡性结肠炎会导致连续的肠道炎症反应,从而使肠道免疫失衡。为探究青稞β葡聚糖(HBG)通过调节Th17/Treg细胞平衡恢复小鼠肠道屏障功能,从而缓解小鼠结肠炎症状,构建了DSS诱导的小鼠结肠炎模型并口服不同浓度的HBG。小鼠处死后,观察小鼠结肠组织形态,测定Occludin、Claudin-1蛋白、Th17细胞、Treg细胞和M1、M2巨噬细胞的含量,流式细胞术检测小鼠脾脏Th17和Treg细胞的分化情况。发现HBG能够缓解小鼠结肠炎病理症状,恢复肠道屏障功能,恢复小鼠结肠组织和脾脏组织的Th17/Treg细胞平衡。结果表明HBG通过调控小鼠Th17/Treg细胞平衡从而恢复结肠炎小鼠免疫稳态、促进肠道屏障功能的恢复,为多糖维持肠道免疫的功能性食品开发上提供一定的理论依据。

Th17和Treg细胞在自身免疫性肝炎发生发展中的作用研究进展

自身免疫性肝炎(autoimmune hepatitis,AIH)是一种由免疫介导的慢性肝脏疾病,酒精、药物、毒素等为其诱导因素,至今其发病机制尚未完全阐明,在治疗上尚以缓解症状、延缓疾病进展为主。由于其免疫特性,T细胞作为免疫应答反应的主要细胞之一引起了人们的关注。近些年来国内外学者通过对AIH免疫机制的深入研究发现Th17与Treg细胞在AIH中的发生发展中起着关键作用。本文从自身免疫反应出发,阐明Th17和Treg细胞除了其自身单独作用之外,在数量和功能方面还会互相影响,并且IL-17、IL-6、RORγt、FoxP3等相关细胞因子也可以通过影响Th17细胞和/或Treg细胞水平进而影响AIH的发生发展。