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No research evidence is available on sex differences regarding molecular neurotransmission. This study aimed to assess whether sex can influence neurotransmitter systems in patients with probable DLB (pDLB).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      We included 123 pDLB patients (male\/female: 77\/46) and 78 control subjects (male\/female: 34\/44) for comparison, who underwent\n                      <jats:sup>123<\/jats:sup>\n                      I-FP-CIT\u00a0SPECT imaging. We assessed sex differences in the dopaminergic activity of the nigrostriatal and mesolimbic systems using regional-based and voxel-wise analyses of\n                      <jats:sup>123<\/jats:sup>\n                      I-FP-CIT binding. We tested whether sex-specific binding alterations would also pertain to the serotoninergic and noradrenergic systems by applying spatial correlation analyses. We applied molecular connectivity analyses to assess potential sex differences in the dopaminergic pathways.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      We found comparable\n                      <jats:sup>123<\/jats:sup>\n                      I-FP-CIT binding decreases in the striatum for pDLB males and females compared to controls. However, pDLB females showed lower binding in the extrastriatal projections of the nigrostriatal and mesolimbic dopaminergic systems compared to pDLB males. According to the spatial correlation analysis, sex-specific molecular alterations were also associated with serotonergic and noradrenergic systems. Nigrostriatal and mesolimbic systems\u2019 connectivity was impaired in both groups, with males showing local alterations and females presenting long-distance disconnections between subcortical and cortical regions.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>\n                      Sex-specific differences in\n                      <jats:sup>123<\/jats:sup>\n                      I-FP-CIT binding were found in our cohort, namely, a trend for lower\n                      <jats:sup>123<\/jats:sup>\n                      I-FP-CIT binding in females, significant in the presence of a pDLB diagnosis. pDLB females showed also different patterns of connectivity compared to males, mostly involving extrastriatal regions. The results suggest the presence of a sex-related regional vulnerability to alpha-synuclein pathology, possibly complicated also by the higher prevalence of Alzheimer\u2019s disease co-pathology in females, as previously reported in pDLB populations.\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1007\/s00259-023-06132-4","type":"journal-article","created":{"date-parts":[[2023,2,24]],"date-time":"2023-02-24T02:02:52Z","timestamp":1677204172000},"page":"2036-2046","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Sex differences in dementia with Lewy bodies: an imaging study of neurotransmission pathways"],"prefix":"10.1007","volume":"50","author":[{"given":"Cecilia","family":"Boccalini","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nicolas","family":"Nicastro","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Debora Elisa","family":"Peretti","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Silvia Paola","family":"Caminiti","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniela","family":"Perani","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2422-698X","authenticated-orcid":false,"given":"Valentina","family":"Garibotto","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2023,2,24]]},"reference":[{"key":"6132_CR1","first-page":"88","volume":"89","author":"IG McKeith","year":"2017","unstructured":"McKeith IG, Boeve BF, Dickson DW, Halliday G, Taylor J-P, Weintraub D, et al. 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