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Altération vasculaire, hypertension et troubles cognitifs

Abstract : The role of the vascular alterations in the pathogenesis of cognitive impairment and dementia (vascular or Alzheimer) is increasingly recognized. In this context, we studied the epidemiological, physiological, genetic and therapeutic aspects of the relationship between high blood pressure, markers of arterial aging and cognitive impairment in elderly (aged 60-85 years) hypertensive patients with subjective memory complaints (ADELAHYDE study) and in institutionalized elderly subjects (aged >= 80 years) during one year follow-up (PARTAGE study), as well as in an elderly population (aged >= 60 years) with good general health and without dementia (Senior examination study). Our results on these three populations show that markers of arterial aging identified subjects at higher risk for cognitive decline, while blood pressure alone did not appear to have a significant predictive value. We also showed that in elderly hypertensive patients (ADELAHYDE study), treatment with calcium-channel blockers was associated with better cognitive performance, independently of blood pressure level and macrovascular or microvascular alteratios. This suggests a specific neuroprotective effect of channel blockers class in the elderly population. Lastly, we could not identify genetic factors associated with cognitive function.
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Ghassan Watfa. Altération vasculaire, hypertension et troubles cognitifs. Médecine humaine et pathologie. Université Henri Poincaré - Nancy 1, 2011. Français. ⟨NNT : 2011NAN10066⟩. ⟨tel-01746213⟩

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