Neurogenic atherosclerosis in mentally retarded persons

Area of Science:

• Neuropathology
• Cardiovascular Medicine
• Developmental Pediatrics

Background:

• Arteriosclerosis (AS) is a significant cardiovascular condition.
• The potential link between chronic central nervous system (CNS) injury and AS development in humans remains under investigation.
• Previous research has not extensively explored AS in institutionalized populations with developmental disabilities.

Purpose of the Study:

• To investigate the hypothesis that chronic CNS injury can induce arteriosclerosis in humans.
• To determine the prevalence of AS in a cohort of institutionalized individuals with intellectual disabilities.
• To identify potential contributing factors to AS in this population, such as neurological disorders and physical limitations.

Main Methods:

• Retrospective analysis of clinical and autopsy records from 1173 institutionalized individuals (aged 1-21 years) over 40 years.
• Comparison of 78 individuals with observed AS against 30 matched control subjects without AS.
• Assessment of correlations between AS and specific conditions like convulsive disorders, physical restriction, and Down's syndrome.

Main Results:

• Mild to moderate coronary or aorta AS was observed in 78 of 1173 residents (aged 1-21 years).
• In 65 cases, AS could not be attributed to predisposing diseases or known risk factors.
• Increased AS prevalence was noted in individuals with convulsive disorders and those who were physically restricted.
• AS frequency in patients with Down's syndrome was comparable to non-Down's patients.

Conclusions:

• Certain brain defects may predispose individuals to atherogenesis.
• Neuronal-sympathoadrenal hyperactivity associated with convulsive disorders might contribute to arterial changes.
• Psychosocial stress from physical handicaps and unmet needs may also influence AS development.
• The study suggests a potential role for chronic CNS injury in the pathogenesis of arteriosclerosis in vulnerable populations.