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Published on: June 26, 2013
Characteristic clinical presentation and CSF biomarker pattern in cerebral small vessel disease
Anders Wallin1, Annika Ohrfelt, Maria Bjerke
1Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry, The Sahlgrenska Academy at University of Gothenburg, Mölndal, Sweden. anders.wallin@neuro.gu.se
Insights
Maintaining cognitive function is vital for independence. Small vessel disease, a silent precursor to stroke and dementia, involves brain arteriolosclerosis and may be detected through biochemical markers.
Area of Science:
- Neurology
- Vascular Biology
- Biochemistry
Background:
- Cognitive functions are essential for independent living, with dementia and stroke being major causes of disability.
- Stroke often results from long-term, asymptomatic vessel wall disease, particularly arteriolosclerosis affecting brain arterioles.
- Arteriolosclerosis, influenced by aging, hypertension, diabetes, and genetics, contributes to white matter changes and ischemic damage.
Purpose of the Study:
- To explore the role of arteriolosclerosis in cognitive decline and disability.
- To investigate the pathological mechanisms of small vessel disease in the brain.
- To identify potential early biochemical indicators of small vessel disease and its progression.
Main Methods:
- Analysis of pathological processes in arteriolosclerotic blood vessels.
- Investigation of enzyme involvement in demyelination, blood-brain barrier integrity, and repair mechanisms (angiogenesis, neurogenesis).
- Focus on biochemical changes reflecting vascular wall remodeling and tissue damage.
Main Results:
- Arteriolosclerosis leads to lumen constriction and impaired cerebral blood flow regulation.
- Associated inflammation and matrix remodeling contribute to demyelination and blood-brain barrier opening.
- Enzymes involved in these vascular processes also play roles in neurogenesis and angiogenesis.
Conclusions:
- Biochemical changes associated with arteriolosclerosis may serve as early indicators of small vessel disease.
- Understanding these mechanisms enhances knowledge of disease characteristics.
- Biochemical markers could enable monitoring of disease-modifying treatments for small vessel disease.
Abstract:
To be able to live a good, independent life cognitive functions need to be intact. Dementia, stroke and neuropsychiatric disorders are the major disorders underlying disability. Stroke is usually a consequence of an underlying vessel wall disease that has lasted for a longer period. This vessel wall disease is commonly silent or without prominent symptoms. Damage to the small penetrating arterioles of the brain, arteriolosclerosis, induced by aging and hypertension, as well as other factors such as diabetes and genetic vulnerability, plays an important role in the origin of white matter changes. The pathological vascular wall process leads to lumen constriction, impaired ability to change lumen diameter according to metabolic needs and possible ischemic-hypoxic tissue damage in the vulnerable vascular architectural terminal areas of the long penetrating arteries. The arteriolosclerotic blood vessels are associated with inflammation and remodelling of the extracellular matrix. Enzymes connected to this process have also been found to be involved in demyelination and blood brain barrier opening but also in the repair process of angiogenesis and neurogenesis. Biochemical changes reflecting these processes might be early indicators of small vessel disease and hence increase the knowledge about the disease characteristic mechanisms. Moreover, monitoring disease modifying treatment effects can be an important application for small vessel disease specific biochemical markers.
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