Changes in lipid peroxidation during pregnancy and after delivery in rats: Effect of pinealectomy

R. M. Sainz, R. J. Reiter, J. C. Mayo, J. Cabrera, D. X. Tan, W. Qi, J. J. Garcia

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

Pregnancy is a physiological state accompanied by a high energy demand of many bodily functions and an increased oxygen requirement. Because of the increased intake and utilization of oxygen, increased levels of oxidative stress would be expected. In the present study, the degree of lipid peroxidation was examined in different tissues from non-pregnant and pregnant rats after the delivery of their young. Melatonin and other indole metabolites are known to be direct free radical scavengers and indirect antioxidants. Thus the effect of pinealectomy at 1 month before pregnancy on the accumulation of lipid damage was investigated in non-pregnant and pregnant rats after the delivery of their young. Malonaldehyde and 4-hydroxyalkenal concentrations were measured in the lung, uterus, liver, brain, kidney, thymus and spleen from intact and pinealectomized pregnant rats soon after birth of their young and at 14 and 21 days after delivery. The same parameters were also evaluated in intact and pinealectomized non-pregnant rats. Shortly after delivery, lipid oxidative damage was increased in lung, uterus, brain, kidney and thymus of the mothers. No differences were detected in liver and spleen. Pinealectomy enhanced this effect in the uterus and lung. It is concluded that during pregnancy high levels of oxidative stress induce an increase in oxidative damage to lipids, which in some cases is inhibited by the antioxidative actions of pineal indoles.

Original languageEnglish (US)
Pages (from-to)143-149
Number of pages7
JournalJournal of reproduction and fertility
Volume119
Issue number1
StatePublished - May 1 2000

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ASJC Scopus subject areas

  • Physiology
  • Embryology
  • Molecular Biology
  • Obstetrics and Gynecology
  • Developmental Biology

Cite this

Sainz, R. M., Reiter, R. J., Mayo, J. C., Cabrera, J., Tan, D. X., Qi, W., & Garcia, J. J. (2000). Changes in lipid peroxidation during pregnancy and after delivery in rats: Effect of pinealectomy. Journal of reproduction and fertility, 119(1), 143-149.