Jul 23, 2008

Myelin pathogenesis and functional deficits following SCI are age-associated

Experimental Neurology
Monica M SiegenthalerHans S Keirstead

Abstract

Most spinal cord injuries (SCI) occur in young adults. In the past few decades however, the average age at time of SCI and the percentage of injuries in persons over the age of 60 have increased. Studies have shown that there is an age-associated delay in the rate of remyelination following toxin-induced demyelination of the spinal cord, suggesting that there may be an age-associated difference in regenerative efficiency. Here we examine for the first time locomotor recovery, bladder recovery, and myelin pathology in young (3 months), aged (12 months), and geriatric (24 months) female rats following contusion SCI. Our assessments indicate that aged and geriatric rats have a delayed rate of locomotor recovery following contusion SCI as compared to young rats. Additionally, aged and geriatric rats have significantly slower bladder recovery as compared to young rats. Examination of myelin pathology reveals that aged and geriatric rats have significantly greater area of pathology and amount of demyelination, as well as significantly less remyelination as compared to young rats following contusion SCI. These data are the first to indicate that there is an age-associated decline in the rate and extent of both locomotor and bladder re...Continue Reading

Mentioned in this Paper

Post-Traumatic Myelopathy
Neuro-Oncological Ventral Antigen 2
Brain Injuries
Pathogenic Aspects
Insulin-Like Growth Factor I
Urine
Pathogenesis
Histology Procedure
Systemic Inflammatory Response Syndrome
Neoplasm of Uncertain or Unknown Behavior of Bladder

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