Thioredoxin-1 and oxidative stress status in pregnant women at early third trimester of pregnancy: Relation to maternal and neonatal characteristics

Yoko Nakatsukasa, Hirokazu Tsukahara, Kazuhisa Tabuchi, Masako Tabuchi, Tomoko Magami, Mutsuko Yamada, Yosuke Fujii, Masato Yashiro, Mitsuru Tsuge, Tsuneo Morishima

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

This study examined the clinical and biological importance of thioredoxin-1, a redox-active defensive protein that controls multiple biological functions, in pregnant women. We measured serum concentrations of thioredoxin-1, total hydroperoxides, and redox potential in 60 pregnant women at the early third trimester: gestational age of 27-29 weeks. The thioredoxin-1 concentration (mean ± SD) was 90 ± 42 ng/ml. Total hydroperoxides was 471 ± 105 U.CARR (1 U.CARR = 0.08 mg/dl H2O2). Redox potential was 2142 ± 273 μmol/l. The total hydroperoxides: redox potential ratio (oxidative stress index) was 0.23 ± 0.08. Thioredoxin-1, total hydroperoxides, and oxidative stress index were higher and redox potential was lower than in blood of healthy adults. Total hydroperoxides and redox potential were mutually correlated significantly and negatively. Thioredoxin-1 correlated significantly and negatively and redox potential correlated significantly and positively with body weight and body mass index. Thioredoxin-1 and redox potential correlated significantly and positively with uric acid and albumin, respectively. Thioredoxin-1 and oxidative stress index correlated significantly and negatively and redox potential significantly and positively with neonatal birth weight. These results suggest that high concentrations of thioredoxin-1 are linked to high oxidative stress status in pregnant women and that neonatal birth weight is affected by the maternal oxidative condition during later pregnancy.

Original languageEnglish
Pages (from-to)27-31
Number of pages5
Journaljournal of clinical biochemistry and nutrition
Volume52
Issue number1
DOIs
Publication statusPublished - Jan 2013

Keywords

  • Later pregnancy
  • Oxidative stress
  • Redox potential
  • Thioredoxin
  • Total hydroperoxides

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Nutrition and Dietetics
  • Clinical Biochemistry

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