Gender differences in endothelial function and inflammatory markers along the occurrence of pathological events in stroke-prone rats.
Exp Mol Pathol
; 82(1): 33-41, 2007 Feb.
Article
em En
| MEDLINE
| ID: mdl-17150211
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.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Encefalopatias
/
Endotélio Vascular
/
Biomarcadores
/
Hipertensão
/
Inflamação
Tipo de estudo:
Etiology_studies
Aspecto:
Determinantes_sociais_saude
Limite:
Animals
Idioma:
En
Revista:
Exp Mol Pathol
Ano de publicação:
2007
Tipo de documento:
Article
País de afiliação:
Itália