Developmental changes in hepatic antioxidant capacity are age-and sex-dependent.

Developmental changes in hepatic antioxidant capacity are age-and sex-dependent.
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DOI:
10.1254/jphs.09223sc
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发表时间:
2009-12
影响因子:
3.5
通讯作者:
Collier AC
Collier AC
中科院分区:
医学3区
文献类型:
--
作者:
Miyagi SJ;Brown IW;Chock JM;Collier AC

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肝脏抗氧化防御的发育不足可能导致化学毒性和儿科肝病。我们测量了27名正常儿科捐献者的肝组织中抗氧化剂的综合含量。随着年龄的增长,谷胱甘肽还原酶呈下降趋势(P=0.008,r=0.54,P<0.01),而微粒体型谷胱甘肽-S转移酶呈上升趋势(−,0.001,r=0.81)。男性的超氧化物歧化酶和维生素E显著降低(P&lt;0.05),谷胱甘肽还原酶也可能降低(P=0.06),而女性的胞浆GST较低(P=0.07)。肝脏抗氧化剂在新生儿中含量很高,在整个童年期间下降,然后在青春期增加到成年水平。
Developmental inadequacy in hepatic antioxidant defenses may contribute to chemical toxicity and pediatric liver diseases. We measured a comprehensive panel of antioxidants in liver tissue from 27 normal pediatric donors. Glutathione reductase declined with age (P = 0.008, r = −0.54, Spearman) while microsomal glutathione-S-transferase increased (GST, P < 0.001, r = 0.81). Males had significantly lower superoxide dismutase and Vitamin E (P < 0.05) and may have lower glutathione reductase (P = 0.06), while females show less cytosolic GST (P = 0.07). Hepatic antioxidants are high in neonates, decline throughout childhood then increase in adolescence to adult levels.
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发表时间: 2002-10-01
期刊: HEPATOLOGY
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