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Home -> All Glossary Items -> Cyhlarova et al 2007 - Niacin skin test response in dyslexia
Niacin skin test response in dyslexia |
| Cyhlarova E, Montgomery P, Ross MA, Richardson AJ. (2007) Prostaglandins Leukot Essent Fatty Acids 77(2): 123-8 |
| Web URL: View this and related abstracts via PubMed here |
| Abstract: The niacin skin test reflects a flush and oedema owing to the production of prostaglandin D2 from arachidonic acid. A diminished response may indicate abnormalities in the phospholipid metabolism, which has been shown in schizophrenia. There is evidence that dyslexia might also involve phospholipid abnormalities, therefore we examined the skin response in 51 dyslexics and 45 controls. Four concentrations of aqueous methyl nicotinate were applied topically to the forearm. Flushing was rated using a seven-point scale at 3 min intervals over 21 min. Repeated measures ANOVA for the four concentrations across all seven time-points showed no significant effect of subject group, but when analyses were confined to the first 9 min, flushing was reduced in dyslexics. Significant group differences were also found for the lowest niacin concentration (0.0001M) across six out of seven time-points. The results indicate a slightly reduced and delayed response to niacin in dyslexia. |
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