IgA1異常糖基化及肝細胞生長因子與過敏性紫癜患兒胃腸道和腎損傷關系的研究
發(fā)布時間:2018-01-04 00:12
本文關鍵詞:IgA1異常糖基化及肝細胞生長因子與過敏性紫癜患兒胃腸道和腎損傷關系的研究 出處:《南昌大學》2013年碩士論文 論文類型:學位論文
更多相關文章: 過敏性紫癜 腹型過敏性紫癜 紫癜性腎炎 IgA1異常糖基化 肝細胞生長因子
【摘要】:實驗目的: 本研究旨在檢測各臨床類型過敏性紫癜(HSP)患兒不同治療時期血清中IgA1異常糖基化與肝細胞生長因子(HGF)的水平,及HSP患兒胃粘膜和腎臟組織中IgA、IgA1、HGF的表達情況,綜合分析它們與HSP疾病不同時期以及相關臟器損傷的關系,以進一步探討IgA1與HGF在HSP疾病發(fā)生發(fā)展過程中的作用機制,并對臨床診斷、鑒別診斷和治療提供新思路。 實驗研究方法: 1、研究對象為2011年7月至2012年11月我院腎內(nèi)科收治的72例HSP初發(fā)急性期住院患兒,病例均符合2005年歐洲風濕病防治委員會和兒童腎病防治委員會共同制訂的HSP新診斷標準,并排除有重癥感染、嚴重的心臟、肝臟、血液系統(tǒng)性疾病,以及長期服用腎上腺皮質(zhì)激素、免疫抑制劑等病例。 2、分組將HSP患兒按不同治療時期及臨床表現(xiàn)分為8組:單純組20例,腹痛組20例,過敏性紫癜(HSPN)組20例,消化道出血組12例,以及與以上四組對應的病情緩解組;診斷非HSP的急性胃腸炎或消化性潰瘍患兒20例及兒童保健門診體檢的健康兒童20例作為對照組;HSP患兒胃粘膜組織20例,急性胃腸炎患兒胃粘膜組織10例及胃腫瘤患兒遠端正常胃粘膜組織4例作為對照組;HSPN患兒腎臟組織40例,腎臟腫瘤患兒遠端正常腎組織10例作為正常對照組。 3、觀察指標:血清IgAl-蠶豆凝集素(VVL)結合實驗方法、ELISA法檢測各臨床類型HSP患兒急性期與緩解期及對照組血清IgA1異常糖基化和HGF的水平;免疫組織化學非生物素二步法測定IgA、IgA1、HGF在胃粘膜、腎臟組織中的表達情況;間接免疫熒光法觀察IgA1在腎臟組織中的表達情況。 結果: 1、HSP患兒血清IgA1異常糖基化水平(mg/L):①急性期單純組(3.38±1.35)、腹痛組(3.47±1.59)、HSPN組(5.06±0.96)及消化道出血組(3.90±1.06)之間比較,HSPN組明顯高于其它三組,但HSP四組均高于非HSP胃腸炎組(2.53±1.06)及正常對照組(2.51±0.83),差異有統(tǒng)計學意義(P0.05);②緩解期單純組(2.45±1.29)、腹痛組(2.37±1.38)及消化道出血組(2.60±1.00)較急性期明顯下降(P0.05),但HSPN組(4.66±1.38)與急性期比較差異無統(tǒng)計學意義(P0.05); 2、HSP患兒血清HGF水平(ng/L):①急性期單純組(2.86±1.31)、腹痛組(2.57±1.90)、HSPN組(3.91±0.91)及消化道出血組(3.85±0.71)均明顯高于正常對照組(1.04±0.55),組間比較HSPN組及消化道出血組高于其他兩組,差異有統(tǒng)計學意義(P0.05),與非HSP胃腸炎組(2.28±1.26)比較,僅HSPN組和消化道出血組高于非HSP胃腸炎組(P0.01),其余兩組與其比較差異均無統(tǒng)計學意義(P0.05);②緩解期單純組(1.21±1.26)、腹痛組(1.37±0.87)、HSPN組(1.91±0.76)及消化道出血組(1.84±1.24)較急性期明顯下降,但HSPN組及消化道出血組仍高于其他兩組,差異有統(tǒng)計學意義(P0.05);③HSP患兒血清IgA1異常糖基化水平與HGF水平之間存在正相關關系(P0.05); 3、HSP患兒免疫組化結果,觀察到均有IgA、IgA1、HGF蛋白在胃粘膜及腎臟組織中大量沉積,表達水平顯著高于非HSP胃腸炎組及正常對照組,,差異有統(tǒng)計學意義(P0.05),且相同組織中IgA1與HGF表達呈正相關關系(P0.05)。 結論: (1)HSP各臨床類型急性期血清IgA1異常糖基化及HGF水平顯著高于非HSP胃腸炎組及正常對照組,且緩解期較急性期有所下降,提示異常糖基化的IgA1及HGF在HSP的發(fā)生、發(fā)展中起到一定作用。 (2)在腹型HSP患兒胃粘膜組織及HSPN患兒腎臟組織中均可以觀察到IgA、IgA1的大量沉積,且IgA1/IgA免疫分數(shù)比值明顯增高,遠高于非HSP胃腸炎組,結合HSP患兒血清IgA1異常糖基化水平的升高,提示異常糖基化的IgA1沉積參與了HSP胃粘膜及腎臟組織的損傷過程;HGF不但在胃粘膜及腎臟組織中大量沉積,且與組織中的IgA1呈正相關關系,提示HGF可能在HSP胃粘膜及腎臟受損過程中起到拮抗IgA1的作用,并且對于無典型皮疹的腹型HSP患兒,IgA1及HGF可能作為新的病理學指標對HSP診斷及鑒別提供新的依據(jù)。
[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錛
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