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IgA1异常糖基化及肝细胞生长因子与过敏性紫癜患儿胃肠道和肾损伤关系的研究

发布时间:2018-01-04 00:12

  本文关键词:IgA1异常糖基化及肝细胞生长因子与过敏性紫癜患儿胃肠道和肾损伤关系的研究 出处:《南昌大学》2013年硕士论文 论文类型:学位论文


  更多相关文章: 过敏性紫癜 腹型过敏性紫癜 紫癜性肾炎 IgA1异常糖基化 肝细胞生长因子


【摘要】:实验目的: 本研究旨在检测各临床类型过敏性紫癜(HSP)患儿不同治疗时期血清中IgA1异常糖基化与肝细胞生长因子(HGF)的水平,及HSP患儿胃粘膜和肾脏组织中IgA、IgA1、HGF的表达情况,综合分析它们与HSP疾病不同时期以及相关脏器损伤的关系,以进一步探讨IgA1与HGF在HSP疾病发生发展过程中的作用机制,并对临床诊断、鉴别诊断和治疗提供新思路。 实验研究方法: 1、研究对象为2011年7月至2012年11月我院肾内科收治的72例HSP初发急性期住院患儿,病例均符合2005年欧洲风湿病防治委员会和儿童肾病防治委员会共同制订的HSP新诊断标准,并排除有重症感染、严重的心脏、肝脏、血液系统性疾病,以及长期服用肾上腺皮质激素、免疫抑制剂等病例。 2、分组将HSP患儿按不同治疗时期及临床表现分为8组:单纯组20例,腹痛组20例,过敏性紫癜(HSPN)组20例,消化道出血组12例,以及与以上四组对应的病情缓解组;诊断非HSP的急性胃肠炎或消化性溃疡患儿20例及儿童保健门诊体检的健康儿童20例作为对照组;HSP患儿胃粘膜组织20例,急性胃肠炎患儿胃粘膜组织10例及胃肿瘤患儿远端正常胃粘膜组织4例作为对照组;HSPN患儿肾脏组织40例,肾脏肿瘤患儿远端正常肾组织10例作为正常对照组。 3、观察指标:血清IgAl-蚕豆凝集素(VVL)结合实验方法、ELISA法检测各临床类型HSP患儿急性期与缓解期及对照组血清IgA1异常糖基化和HGF的水平;免疫组织化学非生物素二步法测定IgA、IgA1、HGF在胃粘膜、肾脏组织中的表达情况;间接免疫荧光法观察IgA1在肾脏组织中的表达情况。 结果: 1、HSP患儿血清IgA1异常糖基化水平(mg/L):①急性期单纯组(3.38±1.35)、腹痛组(3.47±1.59)、HSPN组(5.06±0.96)及消化道出血组(3.90±1.06)之间比较,HSPN组明显高于其它三组,但HSP四组均高于非HSP胃肠炎组(2.53±1.06)及正常对照组(2.51±0.83),差异有统计学意义(P0.05);②缓解期单纯组(2.45±1.29)、腹痛组(2.37±1.38)及消化道出血组(2.60±1.00)较急性期明显下降(P0.05),但HSPN组(4.66±1.38)与急性期比较差异无统计学意义(P0.05); 2、HSP患儿血清HGF水平(ng/L):①急性期单纯组(2.86±1.31)、腹痛组(2.57±1.90)、HSPN组(3.91±0.91)及消化道出血组(3.85±0.71)均明显高于正常对照组(1.04±0.55),组间比较HSPN组及消化道出血组高于其他两组,差异有统计学意义(P0.05),与非HSP胃肠炎组(2.28±1.26)比较,仅HSPN组和消化道出血组高于非HSP胃肠炎组(P0.01),其余两组与其比较差异均无统计学意义(P0.05);②缓解期单纯组(1.21±1.26)、腹痛组(1.37±0.87)、HSPN组(1.91±0.76)及消化道出血组(1.84±1.24)较急性期明显下降,但HSPN组及消化道出血组仍高于其他两组,差异有统计学意义(P0.05);③HSP患儿血清IgA1异常糖基化水平与HGF水平之间存在正相关关系(P0.05); 3、HSP患儿免疫组化结果,观察到均有IgA、IgA1、HGF蛋白在胃粘膜及肾脏组织中大量沉积,表达水平显著高于非HSP胃肠炎组及正常对照组,,差异有统计学意义(P0.05),且相同组织中IgA1与HGF表达呈正相关关系(P0.05)。 结论: (1)HSP各临床类型急性期血清IgA1异常糖基化及HGF水平显著高于非HSP胃肠炎组及正常对照组,且缓解期较急性期有所下降,提示异常糖基化的IgA1及HGF在HSP的发生、发展中起到一定作用。 (2)在腹型HSP患儿胃粘膜组织及HSPN患儿肾脏组织中均可以观察到IgA、IgA1的大量沉积,且IgA1/IgA免疫分数比值明显增高,远高于非HSP胃肠炎组,结合HSP患儿血清IgA1异常糖基化水平的升高,提示异常糖基化的IgA1沉积参与了HSP胃粘膜及肾脏组织的损伤过程;HGF不但在胃粘膜及肾脏组织中大量沉积,且与组织中的IgA1呈正相关关系,提示HGF可能在HSP胃粘膜及肾脏受损过程中起到拮抗IgA1的作用,并且对于无典型皮疹的腹型HSP患儿,IgA1及HGF可能作为新的病理学指标对HSP诊断及鉴别提供新的依据。
[Abstract]:Objective:
The purpose of this study was to detect the clinical type of allergic purpura (HSP) patients with different treatment period in the serum of aberrant glycosylation of IgA1 and hepatocyte growth factor (HGF) level, and HSP in gastric mucosa and kidney tissues of IgA, IgA1, HGF expression, the relationship between comprehensive analysis of them and HSP in different periods and related diseases organ damage, to further explore the IgA1 and HGF mechanism in the development of HSP disease, and provide new ideas for clinical diagnosis, differential diagnosis and treatment.
Experimental research methods:
1, in 72 cases of HSP from July 2011 to November 2012 in our hospital were treated in acute phase of primary hospitalization cases were consistent with the new diagnostic criteria of HSP in 2005 the European Commission and the prevention and treatment of rheumatism children nephropathy Prevention Committee jointly formulate, and exclude severe infection, serious heart, liver, blood system diseases, and the long-term use of glucocorticoids, immunosuppressants and other cases.
2, group HSP were divided into 8 groups according to different treatment period and clinical manifestations: simple group in 20 cases, abdominal pain in 20 cases, allergic purpura (HSPN) group of 20 cases, group 12 cases of gastrointestinal bleeding, and the condition corresponding to the above four groups of non remission group; diagnosis of acute gastroenteritis or digestive HSP ulcer in 20 cases and child health clinic of healthy children as a control group of 20 cases; 20 cases of patients with HSP gastric mucosa, 10 cases of children with distal gastric cancer and normal gastric mucosa of gastric mucosa in children with acute gastroenteritis in 4 cases as the control group; the kidney tissue of HSPN patients in 40 cases, renal tumors in children with distal normal renal tissue 10 cases as normal control group.
3 observation index: serum IgAl- (VVL) Vicia faba lectin binding assay, ELISA assay of the clinical types of HSP in children with acute exacerbation and remission stage and control group of serum IgA1 and HGF abnormal glycosylation level; immunohistochemistry non biotin two step determination of IgA, IgA1, HGF in gastric mucosa, the expression of kidney in the organization; the expression of indirect immunofluorescence of IgA1 in kidney tissue.
Result锛

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