Molecular and Chemical Neuropathology

, Volume 31, Issue 1, pp 1–11

Progesterone protects against lipid peroxidation following traumatic brain injury in rats

  • Robin L. Roof
  • Stuart W. Hoffman
  • Donald G. Stein
Original Articles

DOI: 10.1007/BF02815156

Cite this article as:
Roof, R.L., Hoffman, S.W. & Stein, D.G. Molecular and Chemical Neuropathology (1997) 31: 1. doi:10.1007/BF02815156

Abstract

The gonadal hormone, progesterone, has been shown to have neuroprotective effects in injured nervous system, including the severity of postinjury cerebral edema. Progesterone’s attenuation of edema is accompanied by a sparing of neurons from secondary neuronal death and with improvements in cognitive outcome. In addition, we recently reported that postinjury blood-brain barrier (BBB) leakage, as measured by albumin immunostaining, was significantly lower in progesteronetreated than in nontreated rats, supporting a possible protective action of progesterone on the BBB. Because lipid membrane peroxidation is a major contributor to BBB breakdown, we hypothesized that progesterone limits this free radical-induced damage. An antioxidant action, neuroprotective in itself, would also account for progesterone’s effects on the BBB, edema, and cell survival after traumatic brain injury. To test progesterone’s possible antiperoxidation ef-fect, we compared brain levels of 8-isoprostaglandin F (8-isoPGF), a marker of lipid peroxidation, 24, 48, and 72 h after cortical contusion in male rats treated with either progesterone or the oil vehicle. The brains of progesteronetreated rats contained approximately one-third of the 8-isoPGF found in oil-treated rats. These data suggest progesterone has antioxidant effects and support its potential as a treatment for brain injury.

Index Entries

8-isoPGFfree radicalsantioxidantcontusionsteroidneuroprotectionblood-brain barrierimmunocytochemistry

Copyright information

© Humana Press Inc 1997

Authors and Affiliations

  • Robin L. Roof
    • 1
  • Stuart W. Hoffman
    • 2
  • Donald G. Stein
    • 3
  1. 1.Department of Psychology and Neuroscience ProgramTexas Christian UniversityFort Worth
  2. 2.Department of Pharmacology/Toxicology, Medical College of VirginiaVirginia Commonwealth UniversityRichmond
  3. 3.Department of NeurologyEmory UniversityAtlanta