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Auton. Res."],"published-print":{"date-parts":[[2025,4]]},"abstract":"<jats:title>Abstract<\/jats:title>\n          <jats:sec>\n            <jats:title>Background<\/jats:title>\n            <jats:p>Autonomic synucleinopathies feature autonomic failure and intracellular deposition of the protein alpha-synuclein. Three such conditions are the Lewy body diseases (LBDs) Parkinson\u2019s disease (PD) and pure autonomic failure (PAF) and the non-LBD synucleinopathy multiple system atrophy (MSA). These diseases all entail catecholaminergic abnormalities in the brain, sympathetically innervated organs, or both; however, little is known about renal catecholaminergic functions in autonomic synucleinopathies. We measured urinary excretion rates of the sympathetic neurotransmitter norepinephrine, the hormone epinephrine, the autocrine-paracrine substance dopamine, the catecholamine precursor 3,4-dihydroxyphenylalanine (DOPA), 3,4-dihydroxyphenylglycol (DHPG, the main neuronal metabolite of norepinephrine), and 3,4-dihydroxyphenylacetic acid (DOPAC, a major dopamine metabolite), in PD, PAF, and MSA groups and controls.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Methods<\/jats:title>\n            <jats:p>Data were reviewed from all research participants who had urine collections (usually 3.5 h) at the National Institutes of Health (NIH) Clinical Center from 1995 to 2024. The control cohort had neither autonomic failure nor a movement disorder.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Results<\/jats:title>\n            <jats:p>Norepinephrine excretion rates were decreased compared with controls in PD (<jats:italic>p<\/jats:italic>\u2009=\u20090.0001), PAF (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.0001), and MSA (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.0001). Dopamine excretion was also decreased in the three groups (PD: <jats:italic>p<\/jats:italic>\u2009=\u20090.0136, PAF: <jats:italic>p<\/jats:italic>\u2009=\u20090.0027, MSA: <jats:italic>p<\/jats:italic>\u2009=\u20090.0344). DHPG excretion was decreased in PD (<jats:italic>p<\/jats:italic>\u2009=\u20090.0004) and PAF (<jats:italic>p<\/jats:italic>\u2009=\u20090.0004) but not in MSA. DOPA and epinephrine excretion did not differ among the study groups.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Conclusions<\/jats:title>\n            <jats:p>Autonomic synucleinopathies involve decreased urinary excretion rates of norepinephrine and dopamine. Since virtually all of\u00a0urinary dopamine in humans is derived from circulating DOPA, the low rates of urinary norepinephrine and dopamine excretion may reflect dysfunctions in the renal sympathetic noradrenergic system, the DOPA-dopamine autocrine-paracrine system, or both systems.<\/jats:p>\n          <\/jats:sec>","DOI":"10.1007\/s10286-024-01093-6","type":"journal-article","created":{"date-parts":[[2024,12,10]],"date-time":"2024-12-10T11:10:01Z","timestamp":1733829001000},"page":"215-222","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Decreased urinary excretion of norepinephrine and dopamine in autonomic synucleinopathies"],"prefix":"10.1007","volume":"35","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5709-9940","authenticated-orcid":false,"given":"David S.","family":"Goldstein","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Patti","family":"Sullivan","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Courtney","family":"Holmes","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2024,12,10]]},"reference":[{"key":"1093_CR1","first-page":"517","volume-title":"Clinical autonomic disorders","author":"R Bannister","year":"1993","unstructured":"Bannister R (1993) Multiple-system atrophy and pure autonomic failure. 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