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Hyperglycaemia, microangiopathy, diabetes and dementia risk
I Bourdel-Marchasson1, A Mouries, C Helmer
1CHU of Bordeaux, Department of Gerontology, Bordeaux, France. isabelle.bourdel-marchasson@chu-bordeaux.fr
Abstract:
Brain microangiopathy increases in frequency and severity with older age, with the presence of hypertension and to a lesser extent with diabetes. Magnetic resonance imaging is used to provide anatomical descriptions, but at this time only clinical examination and neuropsychological testing can assess white matter functioning. Clinical correlates of microangiopathy appear as subcortical cognitive alterations, but data are controversial about dementia risk. Brain microangiopathy seems to be however a complication of chronic hyperglycaemia, probably due to similar mechanisms occurring in retinopathy and other microvascular complications. To date, many questions have been raised: How can brain microangiopathy progression be monitored? Is there a reversible stage of brain microangiopathy? Which preventive actions should be implemented in aging patients with diabetes? Finally, what type of care should be provided for people with diabetes and mild cognitive impairment or overt dementia to slow down cognitive worsening?
Insights
Brain microangiopathy, common in aging, hypertension, and diabetes, affects cognitive function. Further research is needed to monitor progression, identify reversible stages, and develop preventive strategies for diabetic patients.
Area of Science:
- Neurology
- Gerontology
- Endocrinology
Background:
- Brain microangiopathy prevalence and severity increase with age, hypertension, and diabetes.
- Magnetic resonance imaging offers anatomical insights, but clinical and neuropsychological assessments are crucial for evaluating white matter function.
- Clinical manifestations include subcortical cognitive alterations, with ongoing debate regarding dementia risk.
Purpose of the Study:
- To address critical questions regarding brain microangiopathy.
- To explore monitoring methods, reversibility, and preventive actions for aging individuals with diabetes.
- To determine optimal care strategies for slowing cognitive decline in diabetic patients with cognitive impairment.
Main Methods:
- Review of existing literature on brain microangiopathy.
- Analysis of clinical examination and neuropsychological testing data.
- Correlation of chronic hyperglycemia with microvascular complications.
Main Results:
- Brain microangiopathy is linked to chronic hyperglycemia, sharing mechanisms with retinopathy.
- Current methods for monitoring progression and identifying reversible stages are insufficient.
- Data on the direct link between microangiopathy and dementia risk remain controversial.
Conclusions:
- Urgent need for validated methods to monitor brain microangiopathy progression.
- Investigating potential reversible stages is critical for therapeutic interventions.
- Developing targeted preventive and care strategies for diabetic patients is essential to mitigate cognitive decline.
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