PubMed · 13427922
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M LOPEZ ESNAURRIZAR. [Hyperthyroidism & the sympathetic nervous system].. https://pubmed.ncbi.nlm.nih.gov/13427922/
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Norepinephrine (NE) is the major neurotransmitter of the sympathetic division of the autonomic nervous system (ANS). Recent findings of an association between human NE deficiency and variants at the dopamine beta-hydroxylase (DBH) gene [Kim et al., 2002] prompted us to investigate these markers in patients with autonomic disorders; 38 with orthostatic intolerance (OI), 26 with pure autonomic failure (PAF), and 39 with multiple system atrophy (MSA). Eighty-eight normal controls were included in this study. In contrast to NE deficiency, allele frequency and genotype distribution of the genetic variants showed no differences between autonomic disease patients and controls. In addition, no DBH mutation was found that distinguished autonomic disease patients from controls, suggesting that genetic variants of the DBH gene are not associated with the autonomic diseases OI, PAF, and MSA.