Research about etiology and prophylactic program in open angle glaucoma

myocilin基因被鉴定为导致开角型青光眼的基因（MYOC）。应用单链构象多态性分析和随后的序列分析对119例日本原发性开角型青光眼（POAG）患者、114例正常眼压性青光眼（NTG）患者和100例非青光眼对照者的myocilin基因进行了分型。鉴定了9个序列变化，包括5个氨基酸序列变化：Promotorl-83 G→A（10个POAG，4个NTG，7个对照），Arg 46 Stop（1个NTG），Arg 76 Lys（10例POAG，4例NTG，7例对照），Thrl 23 Thr（一个POAG，一个对照），Arg 158 Gln（一个POAG、一个NTG、一个对照），Asp20.8Glu（3个POAG，4个NTG，1个对照），Pro481 Ser（1个对照），Ala 488 Ala（1个POAG，2个对照），1515+20 G→A。(one NTG）. Pro481 Serwasnovel. Arg 46 Stop仅见于1例NTG患者。然而，没有青光眼的受试者，Arg 46 Stop杂合子或纯合子，先前被排除。 ...更多信息 该多态性为非致病性多态性，且多发生在启动子区1-83（G→A）。这种单倍型可能是亚洲人特有的。Argl 58 Gln是在显示各种表型的受试者中肌球蛋白的亮氨酸拉链样基序区域中发现的唯一错义序列变化。Argl 58 Gln可能是一种罕见的非致病性多态性，因为它是在对照组中发现的，尽管Argl 58 Gln以前被报道为可能的致病突变。当开角型青光眼患者与对照组比较时，Asp 208 Glu与青光眼的存在有关联的趋势，有趣的是，Asp 208 Glu和Pro481 Ser的组合仅在对照组中发现。Pro481 Ser的相互作用可能具有保护作用。然而，据报道，Asp 208 Glu在100名无青光眼的无关对照受试者中发现了5名，这表明Arg 208 Glu可能是一种非致病性多态性。少

The myocilin gene was identified as a gene (MYOC) that caused open angle glaucoma. Single strand conformation polymorphism analysis and subseauent sequence analysis were performed for genotyping the myocilin gene in 119 unrelated Japanese patients with primary open angle glaucoma (POAG), 114 patients withnormal tension glaucoma (NTG), and 100 control subjects without glaucoma. Nine sequence changes, including 5 amino acid sequence changes, were identified : Promotorl-83 G→A (10 POAG, four NTG, seven control), Arg46Stop (one NTG), Arg76Lys (10 POAG, fourNTG, seven control), Thrl23Thr (one POAG, one control), Argl58Gln (one POAG, one NTG, one control), Asp20.8Glu (three POAG, four NTG, one control), Pro481Ser (one control), Ala488Ala (one POAG, two control), 1515+20 G→A. (one NTG).Pro481Serwasnovel. Arg46Stopwas found inonly 1 patient withNTG in this study. However, the subjects without glaucoma, who were heterozygous or homozygous for Arg46Stop, were previously reported.Arg76Lys is cons … More idered to be a non-disease-causing polymorphism and always occurred with the 1-83 (G→A) in the promoter region. This haplotype may be specific to the Asian population. Argl58Gln is an only missense sequence change found in the leucine zipper-like motif region of the myocilin in subjects showing various phenotypes. Argl58Gln is probably a rare nondisease-causing polymorphism, because it was found in a control subject, although Argl58Gln Was previously reported as a probable disease-causing mutation. When the patients with open angle glaucoma were compared with control subjects, there was a trend toward an association of Asp208Glu with the presence of glaucoma.Interestingly, the combination of Asp208Glu and Pro481Serwas only found in a control. The interaction of Pro481Ser might have a protective effect. However, it was reported that Asp208Glu was found in five of 100 unrelated control subjects without glaucoma, which suggests that Arg208Glu is probably -a nondisease-causing polymorphism. Less