Gender differences in endothelial function and inflammatory markers along the occurrence of pathological events in stroke-prone rats

Rossana Ballerio, Elisabetta Gianazza, Luciana Mussoni, Ingrid Miller, Paolo Gelosa, Uliano Guerrini, Ivano Eberini, Manfred Gemeiner, Silvia Belcredito, Elena Tremoli, Luigi Sironi

Research output: Contribution to journalArticlepeer-review

Abstract

Spontaneously hypertensive stroke-prone rats (SHRSP) feature an established model for human cerebrovascular disease. SHRSP, kept on a high-salt permissive diet (JPD), develop hypertension, renal and brain damage. In this report we compared the behavior of female and male SHRSP regarding the main aspects of their pathological condition. Brain abnormalities, detected by magnetic resonance imaging, developed spontaneously in males after 42 ± 3 days, in females after 114 ± 14 days from the start of JPD. Survival was > 3-fold longer for females than for males. The development of brain damage was preceded, in both genders, by an inflammatory condition characterized by the accumulation in serum and urine of acute-phase proteins. The increase in thiostatin level was significantly lower and delayed in female in comparison to male SHRSP. During JPD female and male SHRSP developed massive proteinuria, its worsening being significantly slower in females. The alterations of vasculature-bound barriers in kidney and brain were connected with endothelial dysfunction and relative deficiency in nitric oxide (NO). In thoracic aortic rings, basal release of NO was significantly higher in female than in male SHRSP, both if receiving and if not receiving JPD. The gender differences in SHRSP thus appear to be connected to a more efficient control in females of inflammation and of endothelial dysfunction.

Original languageEnglish
Pages (from-to)33-41
Number of pages9
JournalExperimental and Molecular Pathology
Volume82
Issue number1
DOIs
Publication statusPublished - Feb 2007

Keywords

  • Endothelial function
  • Gender differences
  • Inflammation
  • Stroke-prone rats
  • Vasculature

ASJC Scopus subject areas

  • Clinical Biochemistry
  • Molecular Biology
  • Pathology and Forensic Medicine

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