Reliability of serum and urinary isoflavone estimates.
Reliability of serum and urinary isoflavone estimates.
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DOI:
10.3109/13547500903335927
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发表时间:
2010-03
期刊:
影响因子:
--
通讯作者:
Bennett H
中科院分区:
文献类型:
--
作者:
Fraser GE;Franke AA;Jaceldo-Siegl K;Bennett H
Sporadic intake and short half lives of serum or urinary biomarkers may make serum and urinary isoflavones quite unreliable indicators of longer-term dietary soy intake. In 26 Adventist Health Study-2 (AHS-2) participants we obtained two measures of fasting morning serum isoflavones, 1–2 years apart. In another 76 subjects we obtained an overnight urine sample, and six 24 hour dietary recalls over a period encompassing the time of the urine sample. Intra-class correlations (ICC) values for serum isoflavones were 0.11 (log[daidzein]) and 0.28 (log[genistein]). Assuming that the correlation(true dietary intake, true urinary excretion)<0.90, it is shown that this implies an ICC for urinary estimates that exceeds 0.56. As expected, the previous day’s soy intake, and its timing, influenced the next morning’s serum levels. These results suggest that fasting morning serum isoflavone estimates will provide a poor index of long-term soy intake, but that overnight urinary estimates perform much better.
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DOI:
10.3181/00379727-217-44231
发表时间:
1998-03-01
影响因子:
--
作者:
Franke, AA;Custer, LJ;Shi, CY
通讯作者:
Shi, CY
DOI:
10.1016/s1570-0232(02)00216-7
发表时间:
2002-09-25
影响因子:
3
作者:
Franke, AA;Custer, LJ;Kolonel, LN
通讯作者:
Kolonel, LN
影响因子:
7.1
作者:
Jaceldo-Siegl, Karen;Fraser, Gary E.;Sabate, Joan
通讯作者:
Sabate, Joan
影响因子:
2.3
作者:
Horn-Ross, PL;Barnes, S;Jones, K
通讯作者:
Jones, K
影响因子:
2.4
作者:
Akaza, H;Miyanaga, N;Pantuck, AJ
通讯作者:
Pantuck, AJ