CAJ | 학술논문

目的对2个Thiel-Behnke角膜营养不良的家系进行基因诊断和建立者效应分析.方法提取家系A中15名成员(13例患者,2名健康成员)、家系B中14例成员(6例患者,8名健康成员)以及20名健康自愿者的基因组DNA,通过DNA测序检测转化生长因子β诱导基因(transforming growth factor beta induced,TGFBI/BIGH3)的突变,并对2个家系成员进行单倍型分析.结果所有患者TGFBI基因的第12外显子发生R555Q突变,2个家系成员具有部分相同的单倍型.结论基因检测有助于Thiel-Behnke角膜营养不良的确诊.2个患病家系可能来自于同一祖先.
목적 대2개Thiel-Behnke각막영양불량적가계진행기인진단화건립자효응분석.방법 제취가계A중15명성원(13례환자,2명건강성원)、가계B중14례성원(6례환자,8명건강성원)이급20명건강자원자적기인조DNA,통과DNA측서검측전화생장인자β유도기인(transforming growth factor beta induced,TGFBI/BIGH3)적돌변,병대2개가계성원진행단배형분석.결과 소유환자TGFBI기인적제12외현자발생R555Q돌변,2개가계성원구유부분상동적단배형.결론 기인검측유조우Thiel-Behnke각막영양불량적학진.2개환병가계가능래자우동일조선.
Objective To investigate the transforming growth factor beta induced (TGFBI; BIGH3) gene mutation and founder effect of two large Chinese families clinically diagnosed as Thiel-Behnke corneal dystrophy. Methods Fifteen members including 13 affected and 2 healthy in family A, 14 members including 6 affected and 8 healthy in family B, as well as 20 other unrelated healthy individuals were tested for TGFBI gene mutation. Haplotype analysis and clinical examination were also carried out in the two families. Results In exon 12 of the TGFBI gene, 1664G to A change was detected in all the patients,which leads to an amino acid replacement of arginine with glutamine (p. Arg555Gln). Members of the two families share some similar haplotypes. Conclusion Genetic analysis is helpful in the diagnosis of corneal dystrophy. The two families may come from a same ancestor.