Suppression of PRDX4 inhibits cell proliferation and invasion of ectopic endometrial stromal cells in endometriosis

Abstract

Oxidative stress (OS) has been proposed to play a role in the development of EMs. Peroxiredoxins are a family of antioxidant proteins that exhibit peroxidase activity in a thioredoxin-dependent manner, protecting cells against OS. The Western blotting results showed that the relative expression of PRDX4 was significantly increased in ectopic endometria compared with the normal endometria of EMs-free (p?<?.05). The H₂O₂ concentration was also significantly higher in the ectopic endometrium. PRDX4 siRNA was transfected into primary ectopic endometrial stromal cells (EESCs). The viability of the transfected EESCs was measured by CCK-8 assay, and the results showed significantly decreased cell viability. Furthermore, the apoptosis rate and ROS generation in flow cytometry assays were significantly increased after the knockdown of PRDX4 expression (p?<?.05). Scratch assays and transwell assays revealed that decreased expression of PRDX4 mediated by siRNA inhibited EESC migration and invasion. In conclusion, these findings indicate the potential role of PRDX4 in the development of EMs and PRDX4 as a possible therapeutic target for EMs treatment.     

儿童结肠镜术前肠道准备质量的影响因素

目的评估行结肠镜检查术前患儿的肠道准备质量,并探讨其影响因素。方法前瞻性纳入2017年8月1日至2018年3月31日期间行结肠镜检查术的患儿198例。根据Boston肠道准备评分量表(The Boston Bowel Preparation Scale,BBPS)进行肠道准备质量评价,并收集患儿一般资料、肠道准备过程相关情况;采用有序logistic回归分析肠道准备质量的影响因素。结果纳入的198例患儿中,男116例、女82例;平均年龄(8.70±2.87)岁;总BBPS得分为(7.45±1.31)分。肠道准备清洁程度为优104例(52.5%),良74例(37.4%),差20例(10.1%);发生不良反应90例(45.5%)。清洁度优、良、差三组患儿之间便秘史,服药后大便次数,最后一次大便性状,不良反应,服药前、服药期间、服药后运动的差异均有统计学意义(P0.05)。Logistic回归分析发现服药后大便次数少,最后一次大便性状为稀糊状、深黄色或褐色有渣、淡黄水样,服用泻药期间无运动和没有完全服用泻药是降低肠道准备清洁度的独立影响因素(P0.05)。结论临床应早期识别影响肠道准备质量的相关因素,并及时采取相应干预措施,以提高肠道准备质量。     

疱疹病毒抗体阳性肺炎支原体肺炎患儿免疫状况及临床特征

目的探讨疱疹病毒抗体阳性的肺炎支原体肺炎(MPP)患儿免疫状况及临床特征。方法回顾分析2015年1月—2017年5月收治的360例2个月～16岁因MPP住院的患儿临床资料,以EB病毒(EBV)、巨细胞病毒(CMV)、单纯疱疹病毒(HSV)任一疱疹病毒IgM抗体阳性的162例患儿为抗体阳性组,另198例EBV、CMV、HSV抗体均阴性的患儿作为对照组,两组进行分析比较。结果 360例MPP患儿中男188例、女172例,合并疱疹病毒IgM抗体阳性162例,其中EBV IgM阳性97例,阳性率26.9%;CMV IgM阳性39例,阳性率10.8%;HSV IgM阳性97例,阳性率26.9%。所有患儿均未予抗病毒治疗,经治疗症状缓解好转出院。抗体阳性组重症MPP、大叶性实变、并发呼吸衰竭的比例均高于对照组,血清IgM、CD~(4+)T细胞、CD~(8+)T细胞、淋巴细胞、NK细胞、白细胞计数、乳酸脱氢酶、丙氨酸氨基转移酶均高于对照组,大环内酯类抗生素使用时间长于对照组,使用激素率高于对照组,差异均有统计学意义(P均0.05)。MPP合并2种病毒IgM抗体阳性者的血IgM和三酰甘油水平高于合并1种者,差异有统计学意义(P0.05)。合并3种病毒IgM抗体阳性者与合并1种者比较,住院时间、发热时间、大环内酯类抗生素使用时间均有延长,血IgM、丙氨酸氨基转移酶水平更高,重症MPP发生率增高,差异均有统计学意义(P0.05)。结论疱疹病毒IgM抗体阳性MPP患儿的炎症反应强烈,临床症状重,病程长,并发症多,需更长时间的治疗。     

儿童先天性心脏病合并心肌致密化不全的介入治疗及随访分析

目的探讨儿童先天性心脏病合并心肌致密化不全介入治疗的安全性及预后。方法回顾分析2016年1月至2017年10月收治的先天性心脏病合并心肌致密化不全患儿的临床资料。比较患儿在心脏介入治疗前后,以彩色多普勒超声心动图测量的非致密心肌/致密心肌(N/C)比值及心功能参数的变化;记录并发症发生情况。结果共纳入患儿25例,男9例、女16例,中位年龄为1岁(0.14～8岁);动脉导管未闭22例、房间隔缺损2例、室间隔缺损1例。术前、术后1、6、12个月之间左心室舒张末期内径(LVEDD)-Z值和N/C比值的差异均有统计学意义(P0.05),均以术后12月时为最低;其中6例患儿在随访过程中心肌致密化不全基本消失。但各时间点之间左室射血分数(LVEF)的差异无统计学意义(P0.05)。术前及术后1、6、12个月,患儿N/C比值、LVEDD-Z值与LVEF值均无相关性(P0.05)。术后随访中位时间19个月(12 ～27个月),随访过程中未出现心血管不良事件及心律失常发生。结论儿童先天性心脏病合并心肌致密化不全如满足介入治疗指征,应积极介入治疗以减少左向右分流,减轻心脏负荷,有利于左室心肌发育及心室逆重构。     

‘Nur'turing tumor T cell tolerance and exhaustion: novel function for Nuclear Receptor Nur77 in immunity

The nuclear receptor Nur77 is expressed in a multitude of tissues, regulating cell differentiation and homeostasis. Dysregulation of Nur77 signaling is associated with cancer, cardiovascular disease, and disorders of the CNS. The role of Nur77 in T cells has been studied for almost 30 years now. There is a clear appreciation that Nur77 is crucial for apoptosis of self-reactive T cells. However, the regulation and function of Nur77 in mature T cells remains largely unclear. In an exciting development, Nur77 has been recently demonstrated to impinge on cancer immunotherapy involving chimeric antigen receptor (CAR) T cells and tumor infiltrating lymphocytes (TILs). These studies indicated that Nur77 deficiency reduced T cell tolerance and exhaustion, thus raising the effectiveness of immune therapy in mice. Based on these novel insights, it may be proposed that regulation of Nur77 activity holds promise for innovative drug development in the field of cellular immunotherapy in cancer. In this review, we therefore summarize the role of Nur77 in T cell selection and maturation; and further develop the idea of targeting its activity in these cells as a potential strategy to augment current cancer immunotherapy treatments.     

HPRT1 基因相关神经系统异常综合征1 例报告

目的探讨HPRT1基因相关的神经系统异常综合征(HRND)的临床表现及基因突变特点。方法回顾分析1例以发育迟缓、高尿酸血症为表现的HRND患儿的临床资料及基因全外显子测序和验证结果。复习文献,比较相似基因型患者的临床表型,并在RNA水平探讨基因突变对蛋白功能的影响。结果患儿,男,3岁4个月。面容未见异常,语言、运动发育均落后,四肢活动受限,双下肢可部分持重,双足外翻,四肢肌力低下,活动及情绪紧张时四肢肌张力增高,不自主动作增多。尿酸1 404.7 μmol/L,Y痕迹蛋白1.64 mg/L,乳酸脱氢酶539 U/L,乳酸脱氢酶同工酶84 U/L。脑电图、肌电图、头颅磁共振未见明显异常。全外显子测序结果显示,HPRT1基因存在c.319-2AT剪接位点突变,其母亲为携带者,该突变可导致HPRT1基因编码的RNA错误加工(缺少外显子3)。结论 HPRT1基因c.319-2AT剪接突变是导致HRND的遗传病因,全外显子测序技术可协助临床确诊。     

IDS 基因同义突变致黏多糖贮积症Ⅱ型一家系报告

目的探讨黏多糖贮积症Ⅱ型(MPSⅡ)的临床表现及基因变异。方法分析1例MPSⅡ先证者及其家系成员的临床资料、基因检测及艾杜糖-2-硫酸酯酶活性检测结果。结果先证者,男,15岁,体格发育障碍、听力下降。影像学示脑室系统扩大,椎骨、肋骨等骨发育不良。尿黏多糖阳性。IDS的8号外显子同义突变(c.1122CT)。先证者及其母亲的艾杜糖-2-硫酸酯酶活性分别为0、6.96 nmol/(4h·mg)。诊断为MPSⅡ。家系中有6例患者及1例疑似者,全为男性,除先证者外,还有1例存活,其余4例夭折。1例疑似者于孕7月余时产前诊断脑积水终止妊娠。检测到5例女性携带者。结论先证者经艾杜糖-2-硫酸酯酶活性检测和基因检测确诊为MPSⅡ,发现多名女性致病基因携带者及男性患者。