{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,13]],"date-time":"2026-08-13T14:53:55Z","timestamp":1786632835699,"version":"build-2736575974"},"reference-count":34,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2022,3,11]],"date-time":"2022-03-11T00:00:00Z","timestamp":1646956800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2022,3,11]],"date-time":"2022-03-11T00:00:00Z","timestamp":1646956800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["movementdisorders.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Movement Disorders"],"published-print":{"date-parts":[[2022,6]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>The neurophysiological correlates of gastrointestinal symptoms (GISs) in Parkinson's disease (PD) are not well understood. It has been proposed that in patients with a gastrointestinal origin of PD dopaminergic neurodegeneration would be more symmetric.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>The aim is to assess the associations between GISs and asymmetry of nigrostriatal dopaminergic neurodegeneration in PD.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      Ninety PD patients were assessed using motor and GIS scales and\n                      <jats:sup>123<\/jats:sup>\n                      I\u2010FP\u2010CIT SPECT. We calculated the asymmetry index and the predominant side of motor symptoms and dopamine transporter (DAT) imaging defect and assessed their association with GISs.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>There were no significant differences in GISs between symmetric and asymmetric dopaminergic defect. Left predominant defect was related to more GIS and higher constipation scores.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>\n                      GISs were associated with left predominant reduction in putaminal DAT binding but not asymmetry per se. It remains open whether left\u2010sided DAT deficit is related to more pronounced GI involvement or symptom perception in PD. \u00a9 2022 The Authors.\n                      <jats:italic>Movement Disorders<\/jats:italic>\n                      published by Wiley Periodicals LLC on behalf of International Parkinson Movement Disorder Society.\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/mds.28986","type":"journal-article","created":{"date-parts":[[2022,3,11]],"date-time":"2022-03-11T03:19:09Z","timestamp":1646968749000},"page":"1284-1289","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Gastrointestinal Symptoms and Dopamine Transporter Asymmetry in Early Parkinson's Disease"],"prefix":"10.1002","volume":"37","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5759-1911","authenticated-orcid":false,"given":"Kirsi","family":"Murtom\u00e4ki","sequence":"first","affiliation":[{"name":"Department of Neurology Helsinki University Hospital, and Clinicum, University of Helsinki  Helsinki Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tuomas","family":"Mertsalmi","sequence":"additional","affiliation":[{"name":"Department of Neurology Helsinki University Hospital, and Clinicum, University of Helsinki  Helsinki Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8003-1346","authenticated-orcid":false,"given":"Elina","family":"Jaakkola","sequence":"additional","affiliation":[{"name":"Clinical Neurosciences University of Turku, and Neurocenter, Turku University Hospital  Turku Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7591-1990","authenticated-orcid":false,"given":"Elina","family":"M\u00e4kinen","sequence":"additional","affiliation":[{"name":"Department of Neurology Helsinki University Hospital, and Clinicum, University of Helsinki  Helsinki Finland"},{"name":"Clinical Neurosciences University of Turku, and Neurocenter, Turku University Hospital  Turku Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Reeta","family":"Levo","sequence":"additional","affiliation":[{"name":"Department of Neurology Helsinki University Hospital, and Clinicum, University of Helsinki  Helsinki Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tanja","family":"Nojonen","sequence":"additional","affiliation":[{"name":"Department of Neurology Helsinki University Hospital, and Clinicum, University of Helsinki  Helsinki Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mikael","family":"Eklund","sequence":"additional","affiliation":[{"name":"Clinical Neurosciences University of Turku, and Neurocenter, Turku University Hospital  Turku Finland"},{"name":"Turku PET Centre Turku University Hospital  Turku Finland"},{"name":"Turku Brain and Mind Center University of Turku  Turku Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1749-7936","authenticated-orcid":false,"given":"Simo","family":"Nuuttila","sequence":"additional","affiliation":[{"name":"Clinical Neurosciences University of Turku, and Neurocenter, Turku University Hospital  Turku Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kari","family":"Lindholm","sequence":"additional","affiliation":[{"name":"Clinical Neurosciences University of Turku, and Neurocenter, Turku University Hospital  Turku 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