IL-9及TL1A在潰瘍性結(jié)腸炎患者腸黏膜組織中的表達變化
發(fā)布時間:2020-07-13 03:51
【摘要】:潰瘍性結(jié)腸炎(ulcerative colitis,UC)發(fā)病機制不明,多數(shù)學者認為免疫因素是其主要發(fā)病機制。Th9細胞是一種新發(fā)現(xiàn)的CD4~+T細胞亞群,主要分泌白細胞介素9(Interleukin-9,IL-9),PU.1是其特異性轉(zhuǎn)錄因子。研究證實,Th9細胞及IL-9參與UC發(fā)生發(fā)展,并成為研究熱點。腫瘤壞死因子樣配體1A(tumor necrosis factor ligand-related molecule1A,TL1A)是TNFSF15編碼的蛋白產(chǎn)物,GWAS研究證實TNFSF15是UC的易感基因。研究發(fā)現(xiàn)UC患者中TL1A表達明顯升高,并與腸道炎癥程度呈正相關(guān)。TL1A過表達慢性實驗性結(jié)腸炎模型中,TL1A與其受體腫瘤壞死因子受體超家族成員死亡受體3(death receptor 3,DR3)結(jié)合,通過PU.1促進Th9分化、IL-9分泌,從而參與UC進程,并與腸道炎癥程度呈正相關(guān)。多項研究提示IL-9及TL1A在UC發(fā)病機制中發(fā)揮重要作用。目的:探討IL-9及TL1A在UC患者血清及腸組織中的表達,以期為UC尋求新的治療方法。方法:ELISA檢測血清TL1A、IL-9含量,IF檢測腸組織Th9細胞含量,IHC檢測腸組織TL1A、DR3、PU.1含量,Real-time PCR檢測腸組織TL1A、DR3、PU.1、IL-9mRNA含量。結(jié)果:(1)血清中IL-9與TL1A呈正相關(guān)。其含量均隨疾病活動度、內(nèi)鏡下Mayo評分、病變累及范圍增加其含量增加,除E1組與E2組相比無統(tǒng)計學意義外(p0.05),其余兩兩相比均有統(tǒng)計學意義(p0.05)。(2)腸組織中Th9、IL-9、PU.1、DR3及TL1A含量均隨疾病活動度、內(nèi)鏡下Mayo評分、病變累及范圍增加其含量增加,除E1組與E2組相比無統(tǒng)計學意義外(p0.05),其余兩兩相比均有統(tǒng)計學意義(p0.05),并驗證了Th9細胞、IL-9與TL1A呈正相關(guān),PU.1與IL-9、Th9呈正相關(guān),DR3與TL1A呈正相關(guān)。結(jié)論:TL1A、DR3、Th9細胞、PU.1、IL-9參與UC的發(fā)生發(fā)展,并推測TL1A與DR3結(jié)合后可能通過調(diào)控PU.1促進了Th9細胞分化及IL-9的分泌,從而參與UC的進程。
【學位授予單位】:河北醫(yī)科大學
【學位級別】:碩士
【學位授予年份】:2018
【分類號】:R574.62
【圖文】:
a. normal mucosal; b. hyperemia and punctate erythema; c. mucosal edema,flaky erythema; d. ulcers, blooding and purulent discharge圖2 潰瘍性結(jié)腸炎腸黏膜組織病理改變Fig.2 Pathological changes of colon tissue: H&E staining (×400)a.normal mucosal; b.mild inflammatory changes in intrinsic membrane diffusethe impatient chronic inflammatory cell infiltration and a crypt abscess,c.moderate inflammatory change:crypt structure change;d.severe inflammatorychanges: mucosal surface erosion, shallow ulceration and granulation tissueformation
圖 1 潰瘍性結(jié)腸炎內(nèi)鏡下 Mayo 評分Fig.1 Different performance of colonoscopya. normal mucosal; b. hyperemia and punctate erythema; c. mucosal edema,flaky erythema; d. ulcers, blooding and purulent discharge圖2 潰瘍性結(jié)腸炎腸黏膜組織病理改變Fig.2 Pathological changes of colon tissue: H&E staining (×400)a.normal mucosal; b.mild inflammatory changes in intrinsic membrane diffuse
圖 3 血清中 IL-9 表達水平Fig.3 Detection of serum IL-9 in patients with UC by ELISAA:in control group and UC patients. B:in different process of UC. C:indifferent endoscopic Mayo score. D:in different incidence type group.(*P<0.05, **P<0.01, ***P<0.001)
本文編號:2752920
【學位授予單位】:河北醫(yī)科大學
【學位級別】:碩士
【學位授予年份】:2018
【分類號】:R574.62
【圖文】:
a. normal mucosal; b. hyperemia and punctate erythema; c. mucosal edema,flaky erythema; d. ulcers, blooding and purulent discharge圖2 潰瘍性結(jié)腸炎腸黏膜組織病理改變Fig.2 Pathological changes of colon tissue: H&E staining (×400)a.normal mucosal; b.mild inflammatory changes in intrinsic membrane diffusethe impatient chronic inflammatory cell infiltration and a crypt abscess,c.moderate inflammatory change:crypt structure change;d.severe inflammatorychanges: mucosal surface erosion, shallow ulceration and granulation tissueformation
圖 1 潰瘍性結(jié)腸炎內(nèi)鏡下 Mayo 評分Fig.1 Different performance of colonoscopya. normal mucosal; b. hyperemia and punctate erythema; c. mucosal edema,flaky erythema; d. ulcers, blooding and purulent discharge圖2 潰瘍性結(jié)腸炎腸黏膜組織病理改變Fig.2 Pathological changes of colon tissue: H&E staining (×400)a.normal mucosal; b.mild inflammatory changes in intrinsic membrane diffuse
圖 3 血清中 IL-9 表達水平Fig.3 Detection of serum IL-9 in patients with UC by ELISAA:in control group and UC patients. B:in different process of UC. C:indifferent endoscopic Mayo score. D:in different incidence type group.(*P<0.05, **P<0.01, ***P<0.001)
【參考文獻】
相關(guān)期刊論文 前1條
1 ;Hsp90 regulates processing of NF-κB2 p100 involving protection of NF-κB-inducing kinase (NIK) from autophagy-mediated degradation[J];Cell Research;2007年06期
本文編號:2752920
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