{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,25]],"date-time":"2026-07-25T12:23:36Z","timestamp":1784982216621,"version":"3.55.0"},"reference-count":82,"publisher":"Oxford University Press (OUP)","issue":"4","license":[{"start":{"date-parts":[[2025,8,9]],"date-time":"2025-08-09T00:00:00Z","timestamp":1754697600000},"content-version":"vor","delay-in-days":220,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001659","name":"German Research Foundation","doi-asserted-by":"publisher","award":["504745852"],"award-info":[{"award-number":["504745852"]}],"id":[{"id":"10.13039\/501100001659","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001659","name":"German Research Foundation","doi-asserted-by":"publisher","award":["FI 2309\/1-1"],"award-info":[{"award-number":["FI 2309\/1-1"]}],"id":[{"id":"10.13039\/501100001659","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001659","name":"German Research Foundation","doi-asserted-by":"publisher","award":["FI 2309\/2-1"],"award-info":[{"award-number":["FI 2309\/2-1"]}],"id":[{"id":"10.13039\/501100001659","id-type":"DOI","asserted-by":"publisher"}]},{"name":"German Ministry of Education and Research","award":["01GM2208C"],"award-info":[{"award-number":["01GM2208C"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2025,7,3]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Although the exact aetiology of the post-COVID condition is still under investigation, there is increasing evidence for white matter pathology in patients with persistent cognitive and fatigue symptoms following an infection with SARS-CoV-2. Still, to date there are no studies that investigated the white matter connectome in patients with post-COVID condition. Based on previous findings, we analyzed the structural connectome of these patients, with a focus on the thalamus and basal ganglia. In this cross-sectional study, 43 patients (34 women, 9 men) and 41 (33 women, 8 men) healthy control participants underwent structural MRI, including T1-weighted and diffusion weighted imaging, as well as a comprehensive neuropsychological and psychiatric assessment. The cognitive assessment included verbal and visual long-term memory, working memory, attention, processing speed, executive control and verbal fluency. Fatigue was assessed with the Fatigue Scale for Motor and Cognitive Functions, depression and anxiety were assessed with the Beck Depression Inventory II and the Beck Anxiety Inventory, respectively. MRI data was analyzed using probabilistic tractography, reconstructing 100 million streamlines per participant, to create individual connectomes. Connectome alterations were assessed using graph theory by calculating node strength and betweenness centrality for the thalamus and basal ganglia. We then analyzed group differences in these measures between patients and control participants with the Mann\u2013Whitney-U-test. For significant alterations, we explored associations between graph measures, fatigue and cognition, depression and anxiety using spearman correlations. We identified significantly increased node strength of the putamen (U = 589, pFDR = 0.036), which was significantly associated with the fatigue severity in patients (\u03c1 = 0.33, P = 0.045) but not in control participants (\u03c1 = 0.11, P = 0.509). Betweenness centrality of the putamen was increased in patients with post-COVID condition (U = 620, P = 0.019) but was not associated with fatigue (\u03c1 = 0.07, P = 0.685). Neither node strength nor betweenness centrality of the putamen was associated with cognitive performance, depression or anxiety scores. Patients with post-COVID condition exhibit structural connectome alterations that are associated with fatigue severity. Such structural white matter pathology may thus contribute to post-COVID pathophysiology. In addition, putamen connectivity could be a neural correlate of post-COVID fatigue.<\/jats:p>","DOI":"10.1093\/braincomms\/fcaf291","type":"journal-article","created":{"date-parts":[[2025,8,8]],"date-time":"2025-08-08T12:10:25Z","timestamp":1754655025000},"source":"Crossref","is-referenced-by-count":2,"title":["Altered putamen connectivity in patients with neurological post-COVID condition"],"prefix":"10.1093","volume":"7","author":[{"ORCID":"https:\/\/orcid.org\/0009-0002-8407-0761","authenticated-orcid":false,"given":"Lars S","family":"Schlenker","sequence":"first","affiliation":[{"name":"Department of Neurology and Experimental Neurology, Charit\u00e9\u2014Universit\u00e4tsmedizin Berlin , Berlin 10117 ,","place":["Germany"]},{"name":"Berlin School of Mind and Brain, Humboldt-Universit\u00e4t zu Berlin , Berlin 10117 ,","place":["Germany"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tim J","family":"Hartung","sequence":"additional","affiliation":[{"name":"Department of Neurology and Experimental Neurology, Charit\u00e9\u2014Universit\u00e4tsmedizin Berlin , Berlin 10117 ,","place":["Germany"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pia","family":"Klabunn","sequence":"additional","affiliation":[{"name":"Department of Neurology and Experimental Neurology, Charit\u00e9\u2014Universit\u00e4tsmedizin Berlin , Berlin 10117 ,","place":["Germany"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0002-3660-6867","authenticated-orcid":false,"given":"Katia","family":"Schwichtenberg","sequence":"additional","affiliation":[{"name":"Department of Neurology and Experimental Neurology, Charit\u00e9\u2014Universit\u00e4tsmedizin Berlin , Berlin 10117 ,","place":["Germany"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5226-6650","authenticated-orcid":false,"given":"Josephine","family":"Heine","sequence":"additional","affiliation":[{"name":"Department of Neurology and Experimental Neurology, Charit\u00e9\u2014Universit\u00e4tsmedizin Berlin , Berlin 10117 ,","place":["Germany"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lucas","family":"Adam","sequence":"additional","affiliation":[{"name":"Department of Neurology and Experimental Neurology, Charit\u00e9\u2014Universit\u00e4tsmedizin Berlin , Berlin 10117 ,","place":["Germany"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christiana","family":"Franke","sequence":"additional","affiliation":[{"name":"Department of Neurology and Experimental Neurology, Charit\u00e9\u2014Universit\u00e4tsmedizin Berlin , Berlin 10117 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