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  1. Home
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  4. 先天雙側無輸精管病人儲精囊的臨床表徵與纖維囊腫基因突變間的相關性
 
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先天雙側無輸精管病人儲精囊的臨床表徵與纖維囊腫基因突變間的相關性

Type
conference
Resource
台灣泌尿科醫學會95年度第15屆第1次會員大會暨第28次學術演講會
Date Issued
2006
Author(s)
吳建志
Wu CC; Liu CH; Chiang HS; ; ;
Subjects
學科:泌尿學科
會議論文
Abstract
目的:纖維囊腫(cystic fibrosis, CF)的致病機轉是因為纖維囊腫基因(cystic fibrosis transmembrane conductance regulator, CFTR)的突變造成;不同的突變基因組合形成不等程度變異的臨床表徵,其中先天雙側無輸精管症(congenital bilateral absence of the vas deferens, CBAVD)被認為是一種CF的輕微表徵。CBAVD的病人除了雙側輸精管缺損之外,也同時出現儲精囊的變異;在儲精囊的變異之中,有的是完全發育缺損(agenesis),有的則是發育不全(hypoplasia),但是也有正常發育的。本研究的目的即在分析CBAVD病人不同的儲精囊臨床表徵與其CFTR突變間的關連性。
材料與方法:收集20位CBAVD病人的DNA,利用溫度梯度膠體電泳(temporal temperature gradient gel electrophoresis, TTGE)及DNA定序(sequence)的方法,篩檢CFTR的基因突變,分類為homozygous(兩股DNA帶有相同的CFTR基因突變)、compound heterozygous(兩股DNA各帶有不同的CFTR基因突變)、heterozygous(其中一股DNA有CFTR基因突變)、以及normal(兩股DNA皆未篩檢出CFTR的突變)。這20位CBAVD病人並且接受經直腸超音波(transrectal ultrasound, TRUS)檢查來記錄其儲精囊的臨床表現,分別分類為完全發育缺損、發育不全、及正常發育三組。
結果:有4位病人的CFTR基因突變為homozygous,其中2位的儲精囊呈完全發育缺損(50%),另2位則呈發育不全(50%);有9位病人的CFTR基因突變為heterozygous,其儲精囊的變異情形分別為完全發育缺損1位(11.1%)、發育不全7位(77.7%)、及正常發育1位(11.1%);7位病人未篩檢出有CFTR的突變,其儲精囊的變異情形分別為完全發育缺損1位(14.3%)、及發育不全6位(85.7%);所有20位CBAVD病人未篩檢出compound heterozygous情形的CFTR突變。
結論:雖然病例數不足,在統計學上也無明顯的差異,但是仍可看出其趨勢,當CBAVD病人的兩股DNA均帶有CFTR突變之時(即homozygous或compound heterozous),其儲精囊較易呈現完全發育缺損;而當只有一股DNA出現CFTR突變(heterozygous),或是兩股DNA接未發現CFTR突變時,其儲精囊的表現則以發育不全為主。
URI
https://203.71.86.71/handle/123456789/32564
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