查詢結果分析
來源資料
相關文獻
- Arylamine N-Acetyltransferase Activity in Human Placenta and Umbilical Cord
- Changes of Plasma Leptin Concentrations in Umbilico-Placental Circulation: Relation to Neonatal and Placental Weight
- Prenatal Diagnosis of Placental, Umbilical Cord and Amniotic Fluid Abnormalities in a Medical Center of Southern Taiwan
- 暴露二手菸孕婦之血液、胎兒臍帶血與胎盤中鉛及鎘濃度之比較
- 最佳化的早產兒胎盤輸血
- Leptin ia a Novel Placenta-Derived Hormone in Humans
- 大黃抑制幽門螺旋桿菌及其作用機轉之研究
- 造血幹細胞移植的演進
- Paeonol Promotes Arylamine N-Acetyltransferase Activity in Rat Blood and Liver Tissues
- 如何控制母牛產後常見的疾病
頁籤選單縮合
題 名 | Arylamine N-Acetyltransferase Activity in Human Placenta and Umbilical Cord=人類胎盤和臍帶中乙酼轉移酵素的活性 |
---|---|
作 者 | 李政和; 顧國極; 廖仁; 王振生; 鍾景光; 洪啟賦; 朱志純; | 書刊名 | 中華民國外科醫學會雜誌 |
卷 期 | 31:2 民87.03-04 |
頁 次 | 頁79-83 |
分類號 | 415.121 |
關鍵詞 | 胎盤; 臍帶; 乙酼轉移酵素; Acetylation; N-acetyltransferase; Placenta; Umbilical cord; |
語 文 | 英文(English) |
中文摘要 | 本研究是探討人類胎盤和臍帶組織中乙醯轉移酵素的活性。取正常生產的胎盤和 臍帶組織以Aminofluorene (AF)及p-Aminobenzoic Acid (PABA)為受質,利用乙醯化輔□A 作乙醯基而再利用高壓層析儀分析來決定這些組織中乙醯轉移酵素的活性。結果胎盤和臍帶 組織對AF及PABA受質皆有乙醯轉移酵素的活性存在且可分類為10個快速轉移酵素,8 個中速乙醯轉移酵素,12個慢速乙醯轉移酵素,胎盤和臍帶組織其對AF的活性平均值各 為2.67±0.72和2.58±0.36 (n=10),1.30±0.436和1.44±0.31 (n=8) , 0.96±0.24和0.54±0.12 (n=12) nmol/min/mg protein,胎盤和臍帶織對PABA的活性平均值各為2.26±0.45和2.24± 0.32 (n=10)和 1.18±0.26 (n=8), 0.74±0.20和0.47±0.11 (n=12)nmol/min/mg protein。人類胎 盤和臍帶組織中乙醯轉移酵素的N-乙醯化作用可能具有解毒的功能,可將母體至胎兒環血 中有毒的物質經生物轉變為非毒性的物質。 |
英文摘要 | N-acetyltrnsferase (NAT) activity was determined in human placenta and umbilical cord tissues from thirty individual samples. The results derived from tissue cytosols (subcellular fraction) show that there are 10 rapid, 8 intermediate, and 12 slow acetylators, based on 2-aminofluorene (AF) and p-aminobenzoic acid (PABA) substrates. The mean activity of placenta and umbilical cord tissues for AF is 2.67±0.72 and 2.58±0.36 (n=10) , 1.30±0.436 and 1.44±0.31 (n=8) , 0.96± 0.24 and 0.54±0.12 (n=12) nmol/min/mg protein, for PABA is 2.26±0.45 and 2.24±0.32 (n=10) , 1.18±0.26 (n=8), 0.74±0.20 and 0.47±0.11 (n=12)nmol/min/mg protein, respectively. The placenta and umbilical cord are not only a conduit between fetus and maternal circulation, but the acetylation capacity of N-acetyltransferase in human placenta and umbilical cord may be also one means of detoxification of foreign chemicals (xenobiotics) from maternal circulation. |
本系統中英文摘要資訊取自各篇刊載內容。