当前位置:主页 > 医学论文 > 消化疾病论文 >

rs3129891和rs77005575位点突变基因型同IBD患者肠粘膜中α-防御素的减少表达相关

发布时间:2021-02-25 18:35
  研究背景和目的炎症性肠病(IBD)是肠道的一种慢性特发性炎症,根据临床和组织病理学特征,分为溃疡性结肠炎(UC)和克罗恩病(CD)主要表现形式。目前越来越认可的一种观点认为,肠道抗菌肽表达减少导致的无效细菌清除是触发并维持IBD患者中观察到的异常免疫应答的重要因素。人肠道抗菌肽主要由人肠道α-防御素,少量的溶菌酶和分泌型磷脂酶A2(SPLA2)组成。基因型-表型相关研究表明,NOD2突变(SNP8,rs2066844;SNP12,rs2066845;SNP13,rs2066847)与回肠CD相关。在携带这些突变的CD患者中,肠粘膜α-防御素的表达的明显减少,在存在SNP13突变时减少的水平更加显著。然而,在结肠CD和UC患者中,哪些基因变异与抗菌肽的粘膜表达有关,尚不清楚。本研究的目的是为探讨哪些遗传变异可影响结肠CD和UC中粘膜抗菌肽的表达。为了解决这个问题,我们收集结肠CD和UC患者肠粘膜组织,检测它们的抗菌肽表达水平,然后比较这些抗菌肽表达同22个1BD相关SNP的基因型之间的相关性。这些SNP包括rs2066844,rs2066845,rs2066847,rs35261698,... 

【文章来源】:南方医科大学广东省

【文章页数】:135 页

【学位级别】:博士

【部分图文】:

rs3129891和rs77005575位点突变基因型同IBD患者肠粘膜中α-防御素的减少表达相关


图2rs2066842的质谱结果图

质谱


?结果???tissue?lysis,?DNA?binding?to?membrane,?DNA?purification.?Genotyping?of?genomic?DNA?for??mutations?of?SNP?rs2066842?was?performed?using?Mass?ARRAY?MALDI-TOF?System??(SEQUENOM)?according?to?the?manufacturer’s?protocol.?Wild?homozygous?CC?and?mutant??heterozygous?CT?were?found.??

质谱,肠道粘膜


图4rs2172252的质谱结果图。收集的肠道粘膜组织剪碎后,使用TaKaRa的基因组DNA提??取试剂盒提取DNA,包括组织裂解、DNA与膜结合、DNA纯化等步骤。提取的DNA使??用SEQUENOM的MassARRAY?MALDI-TOF方法检测SNP?rs2172252的位点核酸信息,发现??AA野生纯合型和AT突变杂合型。??Figure?4?Mass?spectrometry?results?of?SNP?rs2172252.?Frozen?biopsies?were?disrupted??mechanically?and?genomic?DNA?was?extracted?using?MiniBEST?Universal?Genomic?DNA??Extraction?kit?Ver.5.0?(TaKaRa)?according?to?the?manufacturer^?protocol.?In?brief,?it?includes??31??

【参考文献】:
期刊论文
[1]Crucial steps in the natural history of inflammatory bowel disease[J]. Giovanni Latella,Claudio Papi.  World Journal of Gastroenterology. 2012(29)
[2]OCTN and CARD15 gene polymorphism in Chinese patients with inflammatory bowel disease[J]. Mei Li, Xiang Gao, Pin-Jin Hu, Department of Gastroenterology, the First Aff iliated Hospital of Zhongshan University, Guangzhou 510089, Guangdong Province, China Chang-Cun Guo, Kai-Chun Wu, Xin Zhang, Department of Gastroenterology, Xijing Hospital of the Fourth Military Medical University, Xi’an 710032, Shaanxi Province, China.  World Journal of Gastroenterology. 2008(31)
[3]Single nucleotide polymorphism in the tumor necrosis factor-alpha gene affects inflammatory bowel diseases risk[J]. Lynnette R Ferguson,Claudia Huebner,Ivonne Petermann,Richard B Gearry,Murray L Barclay,Pieter Demmers,Alan McCulloch,Dug Yeo Han.  World Journal of Gastroenterology. 2008(29)
[4]NOD2/CARD15基因突变与中国人克罗恩病相关性的研究[J]. 龙靖华,智发朝,张迎春,张以洋,钟长青,姚国鹏,陈正彦,林勇,智佳,关婧.  胃肠病学. 2007(06)
[5]Family and twin studies in inflammatory bowel disease[J]. Leena Halme,Paulina Paavola-Sakki,Ulla Turunen,Maarit Lappalainen,Martti Frkkil,Kimmo Kontula.  World Journal of Gastroenterology. 2006(23)
[6]NOD2/CARD15基因多态性与克罗恩病患者相关性研究[J]. 高敏,曹倩,罗灵和,吴敏良,胡伟玲,姒健敏.  中华内科杂志. 2005(03)
[7]NOD2 3020insC frameshift mutation is not associated with inflammatory bowel disease in Chinese patients of Hart nationality[J]. Qiu-Sha Guo Bing Xia Yi Jiang Yan Qü Jing Li Department of Internal Medicine,Zhongnan Hospital,Wuhan University,Wuhan 430071,Hubei Province,ChinaSupported by the National Natural Science Foundation of China,No.30370638.  World Journal of Gastroenterology. 2004(07)
[8]An analysis of 10218 ulcerative colitis cases in China[J]. Xue-Liang Jiang Department of Gastroenterology,Chinese PLA General Hospital of Jinan Command,Jinan 250031,China Hui-Fei Cui Department of Biochemical Pharmaceutics,Shandong University,Jinan 250012,Shandong Province,China.  World Journal of Gastroenterology. 2002(01)
[9]我国炎症性肠病的流行病学研究概况[J]. 郑家驹,史肖华,郭志荣.  中华内科杂志. 2009 (04)



本文编号:3051399

资料下载
论文发表

本文链接:https://www.wllwen.com/yixuelunwen/xiaohjib/3051399.html


Copyright(c)文论论文网All Rights Reserved | 网站地图 |

版权申明:资料由用户d6327***提供,本站仅收录摘要或目录,作者需要删除请E-mail邮箱bigeng88@qq.com