Hypertension fails to disrupt white matter integrity in young or aged Fisher (F44) Cyp1a1Ren2 transgenic rats

J Cereb Blood Flow Metab. 2015 Feb;35(2):188-92. doi: 10.1038/jcbfm.2014.201. Epub 2014 Nov 19.

Abstract

Hypertension is linked with an increased risk of white matter hyperintensities; however, recent findings have questioned this association. We examined whether hypertension and additional cerebrovascular risk factors impacted on white matter integrity in an inducible hypertensive rat. No white matter hyperintensities were observed on magnetic resonance imaging either alone or in conjunction with ageing and high-fat diet. Aged hypertensive rats that were fed a high-fat diet had moderately reduced fractional anisotropy in the corpus callosum with no overt pathological features. Herein we show that moderate hypertension alone or with additional risk factors has minimal impact on white matter integrity in this model.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aging* / genetics
  • Aging* / metabolism
  • Aging* / pathology
  • Animals
  • Corpus Callosum / metabolism
  • Corpus Callosum / pathology
  • Cytochrome P-450 CYP1A1 / genetics*
  • Dietary Fats / adverse effects
  • Dietary Fats / pharmacology
  • Hypertension / metabolism*
  • Hypertension / pathology
  • Mice
  • Rats
  • Rats, Inbred F344
  • Rats, Transgenic
  • Renin* / biosynthesis
  • Renin* / genetics
  • White Matter / metabolism*
  • White Matter / pathology

Substances

  • Dietary Fats
  • Ren2 protein, mouse
  • Cytochrome P-450 CYP1A1
  • Renin