新生兒壞死性小腸結(jié)腸炎患者體內(nèi)粘膜相關(guān)恒定T細(xì)胞亞群的檢測及其臨床意義
[Abstract]:BACKGROUND: Neonatal necrotizing enterocolitis (NEC) is a common life-threatening gastrointestinal acute inflammatory disease in neonatal intensive care unit (NICU). In recent years, the level of neonatal intensive care and treatment has gradually improved, but NEC still has a high morbidity and mortality in premature infants. However, the pathogenesis of NEC is not clear, and one or more risk factors of NEC can not fully explain the occurrence of NEC, progress rate and severity of the difference between individuals, which also limits the use of more effective prevention and treatment of NEC, so for the pathogenesis of NEC has important multi-angle research. Mucosal associated invariant T (MAIT) cells are a kind of natural T cells discovered in recent years, which play an important role in the immune regulation of many diseases mainly through the secretion of inflammatory factors such as IL-17 and cytotoxicity. MAIT cells can be divided into CD8+, CD4+, and CD8-CD4-(double-negative, DN) CD8+MAIT cells can be divided into two subgroups according to the expression of CD8 homologous dimers. Previous studies have shown that MAIT cells are involved in the pathogenesis of inflammatory bowel disease, and the gene polymorphism of IL-17, the main inflammatory factor of MAIT cells, has been confirmed to be associated with the susceptibility to inflammatory bowel disease. Therefore, to explore the changes of MAIT cells and their subsets in premature infants with NEC and their correlation with clinical indicators, and to lay a theoretical foundation for the study of the pathogenesis of NEC immunology; to study the relationship between IL-17 gene polymorphism and susceptibility to NEC and disease severity, from the gene perspective. Objective: To study the distribution of MAIT cells and their subsets in premature neonates with NEC, and to explore the correlation between the IL-17 gene polymorphism of MAIT cells and the susceptibility and severity of NEC. Methods: 1. The expression of MAIT cells and its subsets in peripheral blood mononuclear cells (PBMC) and intestinal lamina propria mononuclear cells (LPMC) of premature neonates with NEC and control subjects were detected by flow cytometry, and early NEC was detected by Bell classification. Levels of serum inflammatory cytokines IL-2, IL-4, IL-17A, IL-6, IL-10, TNFa and IFN-gamma in premature neonates with NEC were measured by Cytometric Bead array (CBA) technique. The correlation between MAIT cells and their subsets was analyzed. 3. The peripheral blood MAIT cells and their subsets were detected by flow cytometry. The changes of MAIT cells and their subsets were compared before and after treatment to further explore the role of MAIT cells and their subsets in NEC diseases. 4. Polymerase chain reaction (PCR) Sequence chain reaction, PCR and Sarger sequencing were used to explore the correlation between IL-17A (rs2275913) and IL-17F (rs763780) SNP polymorphisms and the susceptibility and severity of NEC in premature infants. The percentage of CD8 alpha + MAIT cell subsets in peripheral blood and intestinal tissue of NEC preterm infants was significantly lower than that of the control group, and the percentage of CD8 alpha + MAIT cell subsets in peripheral blood of NEC preterm infants was related to the severity of the disease. 2. The levels of IL-2, IL-4, TNF-alpha, IFN-gamma and IL-17A inflammatory factors were lower in serum of NEC infants. The level of - 6 in serum of NEC patients was higher than that of control group, but there was no correlation between CD8alpha + MAIT cell subsets and the percentage of total MAIT cells in peripheral blood. There was no significant difference in the percentage of cell subsets between the two groups. 4. There was no significant difference in the genotype and allele frequencies of IL-17A (rs2275913) SNP loci between the NEC and the control group. The distribution frequencies of TC+CC genotype and C allele of IL-17F (rs763780) SNP loci in the NEC group were significantly higher than those in the control group. Distribution frequency of TC+CC genotype in F(rs763780) SNP locus was significantly higher in NEC patients with Bell grade III than in NEC patients with Bell grade II. Distribution frequency of TC+CC genotype in IL-17F(rs763780) SNP locus was significantly higher in children with NEC-related pneumoperitoneum than in children without NEC-related pneumoperitoneum. In the course of NEC disease, it may migrate from peripheral blood to intestinal inflammation tissues and play an immunoregulatory role. The decrease of the percentage of CD8alpha+MAIT cell subsets in premature infants may lead to the decrease of the ability of MAIT cells to resist microorganisms and participate in the occurrence and progression of NEC. The genetic polymorphism of IL-17A (rs2275913) SNP locus may not be related to the susceptibility of NEC, and the mutation of IL-17F (rs763780) SNP locus may be related to the susceptibility and severity of NEC.
【學(xué)位授予單位】:吉林大學(xué)
【學(xué)位級別】:博士
【學(xué)位授予年份】:2017
【分類號】:R722.1
【相似文獻(xiàn)】
相關(guān)期刊論文 前10條
1 林杏秀,周玉生,李培杰,牛靜,丁承恩;健康人群外周血T細(xì)胞亞群的變化規(guī)律及正常值探討[J];山東醫(yī)藥;1994年03期
2 劉近春,王勤英;甲型肝炎病毒感染者外周血T淋巴細(xì)胞亞群的變化研究[J];山西醫(yī)藥雜志;2000年03期
3 阮光萍;T細(xì)胞亞群檢測的臨床意義[J];醫(yī)學(xué)綜述;2000年07期
4 陸正齊,胡學(xué)強;猴實驗性變應(yīng)性腦脊髓炎血和腦脊液淋巴細(xì)胞亞群的動態(tài)研究[J];中國免疫學(xué)雜志;2001年02期
5 楊國清,袁富華;肺心病急性加重期外周血T細(xì)胞亞群的改變[J];中國基層醫(yī)藥;2002年01期
6 崔巍,吳衛(wèi),張峰,王俊英,倪安平;嚴(yán)重急性呼吸綜合征患者淋巴細(xì)胞及其亞群的表型分析[J];中華檢驗醫(yī)學(xué)雜志;2003年05期
7 錢江潮;傳染性單核細(xì)胞增多癥患兒淋巴細(xì)胞亞群的變化[J];溫州醫(yī)學(xué)院學(xué)報;2003年06期
8 高連臣;蜂毒對T淋巴細(xì)胞亞群的影響[J];養(yǎng)蜂科技;2004年03期
9 袁富華;肺心病急性加重期外周血T細(xì)胞亞群的改變[J];現(xiàn)代醫(yī)藥衛(wèi)生;2005年08期
10 胡國強;葉方立;;嚴(yán)重急性呼吸綜合征T細(xì)胞亞群Meta分析[J];中國免疫學(xué)雜志;2006年02期
相關(guān)會議論文 前10條
1 崔巍;吳衛(wèi);張峰;王俊英;倪安平;;嚴(yán)重急性呼吸綜合征患者淋巴細(xì)胞及其亞群的表型分析[A];中華醫(yī)學(xué)會系列雜志SARS研究論文集[C];2003年
2 鐘福高;曲志剛;江錦紅;馬光麗;;特發(fā)性血小板減少性紫癜患者外周血T淋巴細(xì)胞亞群的表達(dá)及意義[A];2007年浙江省血液病學(xué)術(shù)年會論文匯編[C];2007年
3 韓亞萍;周東輝;翁亞麗;黃祖瑚;李軍;董莉;陳念;張冬月;劉源;蔣龍鳳;李爽;;發(fā)熱伴血小板減少綜合征患者外周血淋巴細(xì)胞亞群變化特點[A];中華醫(yī)學(xué)會全國新發(fā)和再發(fā)傳染病2012年學(xué)術(shù)研討會論文匯編[C];2012年
4 江宇泳;王融冰;;慢性HBV感染與T淋巴細(xì)胞亞群的變化[A];中華醫(yī)學(xué)會全國第九次感染病學(xué)學(xué)術(shù)會議論文匯編[C];2006年
5 馮勝春;徐瑞龍;;流式細(xì)胞術(shù)檢測細(xì)胞內(nèi)IFN-γ和IL-4及臨床意義[A];2008年浙江省檢驗醫(yī)學(xué)學(xué)術(shù)年會論文匯編[C];2008年
6 王濤;蔣波;李慶;;兒童反復(fù)呼吸道感染淋巴細(xì)胞亞群與血清維生素D狀況的研究[A];中華醫(yī)學(xué)會第十五次全國兒科學(xué)術(shù)大會論文匯編(上冊)[C];2010年
7 翟慧;劉一典;唐神結(jié);郝曉輝;姚嵐;肖和平;翟慧;;肺結(jié)核患者外周血NKT細(xì)胞、NK細(xì)胞和T淋巴細(xì)胞亞群的變化及其意義[A];中華醫(yī)學(xué)會結(jié)核病學(xué)分會2010年學(xué)術(shù)年會論文匯編[C];2010年
8 郭永紅;何瑜;張穎;雷迎峰;王宇;紀(jì)光晰;范超;周云;馬力;成程;馬志遠(yuǎn);賈戰(zhàn)生;;CD100及其受體CD72在HCV患者B細(xì)胞及其亞群表達(dá)研究[A];中華醫(yī)學(xué)會第十六次全國病毒性肝炎及肝病學(xué)術(shù)會議論文匯編[C];2013年
9 羅洪強;周國忠;鐘永根;劉忠民;傅佳萍;林茂芳;謝萬灼;;腎上線皮質(zhì)激素對免疫性血小板減少癥患者B淋巴細(xì)胞亞群和血小板數(shù)的影響[A];2009年浙江省血液病學(xué)學(xué)術(shù)年會論文集[C];2009年
10 曹振環(huán);李海英;彭巧麗;田亞坤;師令嫻;陳新月;;HIV感染者T淋巴細(xì)胞亞群增殖、活化與疾病進(jìn)展的相關(guān)性研究[A];中華醫(yī)學(xué)會第四次全國艾滋病、病毒性丙型肝炎暨全國熱帶病學(xué)術(shù)會議論文匯編[C];2009年
相關(guān)重要報紙文章 前5條
1 段文利;北京協(xié)和醫(yī)院修訂SLE發(fā)病機制[N];中國醫(yī)藥報;2008年
2 胡 慧;SARS病人T細(xì)胞亞群變化的臨床觀察[N];中國中醫(yī)藥報;2003年
3 記者 韓璐 通訊員 黃顯斌 唐明山;SARS病毒可感染人體多種細(xì)胞[N];科技日報;2003年
4 本報記者 周 靖;臨床實踐中探究SARS病人發(fā)病機理[N];大眾科技報;2003年
5 段文利;CD4陽性、CD25陰性、Foxp3陽性T細(xì)胞亞群與紅斑狼瘡關(guān)系密切[N];健康報;2008年
相關(guān)博士學(xué)位論文 前7條
1 車媛媛;吉蘭—巴雷綜合征患者循環(huán)記憶性濾泡輔助性T淋巴細(xì)胞亞群的變化及其意義[D];吉林大學(xué);2016年
2 馬麗亞;極早產(chǎn)兒淋巴細(xì)胞亞群演變及臨床意義研究[D];南方醫(yī)科大學(xué);2016年
3 田佳怡;新生兒壞死性小腸結(jié)腸炎患者體內(nèi)粘膜相關(guān)恒定T細(xì)胞亞群的檢測及其臨床意義[D];吉林大學(xué);2017年
4 李建琴;異常T細(xì)胞亞群參與免疫性血小板減少癥的機制研究[D];蘇州大學(xué);2013年
5 施萬英;中國HIV/AIDS患者na(?)ve、memory CD8+T細(xì)胞亞群數(shù)量及功能與疾病進(jìn)展的相關(guān)性研究[D];中國醫(yī)科大學(xué);2007年
6 李維娜;Foxp3相互作用分子UXT對Tregs功能的影響及其機制研究[D];第四軍醫(yī)大學(xué);2012年
7 陳英虎;MBL阻遏人MD-DC捕獲和呈遞HCMV的研究[D];浙江大學(xué);2010年
相關(guān)碩士學(xué)位論文 前10條
1 黃莉莉;阻塞性睡眠呼吸暫停低通氣綜合征對兒童外周血T淋巴細(xì)胞亞群及NK細(xì)胞活性的影響[D];福建醫(yī)科大學(xué);2015年
2 尹雪;變應(yīng)性鼻炎患者IL-35對于Treg/Th17細(xì)胞平衡的調(diào)控作用[D];河北醫(yī)科大學(xué);2015年
3 殷先堯;慢性丙型肝炎患者外周血T淋巴細(xì)胞亞群和ALT、AST與其血清HCV-RNA的相關(guān)性分析[D];安徽醫(yī)科大學(xué);2014年
4 李理;外周血CD4~+T細(xì)胞平衡與帕金森病的相關(guān)性研究[D];蚌埠醫(yī)學(xué)院;2015年
5 王小偉;COPD患者不同時期的T淋巴細(xì)胞亞群、FIB、CRP水平變化的相關(guān)性分析[D];皖南醫(yī)學(xué)院;2015年
6 韓雪;影響乳腺癌患者免疫狀態(tài)的相關(guān)因素分析[D];大連醫(yī)科大學(xué);2015年
7 趙金雪;HIV-1感染慢性期,,CD4~+T細(xì)胞減少機制的初步探討:凋亡,焦亡?[D];首都醫(yī)科大學(xué);2016年
8 沙影麗;嬰幼兒哮喘血清維生素D及T細(xì)胞亞群變化研究[D];吉林大學(xué);2016年
9 周東明;淋巴細(xì)胞亞群在淋系惡性疾病預(yù)后判斷中的作用[D];蘇州大學(xué);2016年
10 馬蓓蕾;Th1/Th17/Th9細(xì)胞亞群在原發(fā)免疫性血小板減少癥發(fā)病中的相關(guān)性及意義[D];山東大學(xué);2016年
本文編號:2199750
本文鏈接:http://sikaile.net/yixuelunwen/eklw/2199750.html