J
Johann Hagenah
Researcher at University of Lübeck
Publications - 121
Citations - 4454
Johann Hagenah is an academic researcher from University of Lübeck. The author has contributed to research in topics: Dystonia & Parkinsonism. The author has an hindex of 39, co-authored 120 publications receiving 4103 citations.
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Journal ArticleDOI
Phosphatase and tensin homolog (PTEN)-induced putative kinase 1 (PINK1)-dependent ubiquitination of endogenous Parkin attenuates mitophagy: study in human primary fibroblasts and induced pluripotent stem cell-derived neurons.
Aleksandar Rakovic,Katharina Shurkewitsch,Philip Seibler,Anne Grünewald,Alessandra Zanon,Johann Hagenah,Dimitri Krainc,Christine Klein +7 more
TL;DR: It is demonstrated in human primary fibroblasts and induced pluripotent stem-derived neurons from controls and PINK1 mutation carriers that endogenous levels of Parkin are not sufficient to initiate mitophagy upon loss of the mitochondrial membrane potential, caused by its (self-)ubiquitination, followed by degradation via the ubiquitin proteasome system.
Journal ArticleDOI
Altered Resting State Brain Networks in Parkinson’s Disease
Martin Göttlich,Thomas F. Münte,Marcus Heldmann,Meike Kasten,Johann Hagenah,Ulrike M. Krämer +5 more
TL;DR: The results on global network and module properties indicated that PD manifests as a disconnection syndrome, and the degree of intrinsic functional connectivity was mapped both on ROI- and on voxel-level across the brain.
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Mutations in THAP1 (DYT6) and generalised dystonia with prominent spasmodic dysphonia: a genetic screening study.
Ana Djarmati,Susanne A. Schneider,Katja Lohmann,Susen Winkler,Heike Pawlack,Johann Hagenah,Norbert Brüggemann,Simone Zittel,Tania Fuchs,Aleksandar Rakovic,Alexander Schmidt,Hans-Christian Jabusch,Robert A. Wilcox,Vladimir S. Kostic,Hartwig R. Siebner,Eckart Altenmüller,Alexander Münchau,Laurie J. Ozelius,Christine Klein +18 more
TL;DR: Although mutations in THAP1 might have only a minor role in patients with different, but mainly focal, forms of dystonia, they do seem to be associated with early-onset generalised dySTONia with spasmodic dysphonia.
Journal ArticleDOI
Whispering dysphonia (DYT4 dystonia) is caused by a mutation in the TUBB4 gene
Katja Lohmann,Robert A. Wilcox,Susen Winkler,Alfredo Ramirez,Alfredo Ramirez,Aleksandar Rakovic,Jin-Sung Park,Björn Arns,Thora Lohnau,Justus L. Groen,Meike Kasten,Norbert Brüggemann,Johann Hagenah,Alexander Schmidt,Frank J. Kaiser,Kishore R. Kumar,Kishore R. Kumar,Katja Zschiedrich,Daniel Alvarez-Fischer,Eckart Altenmüller,Andreas Ferbert,Anthony E. Lang,Alexander Münchau,Vladimir S. Kostic,Kristina Simonyan,Marc Agzarian,Laurie J. Ozelius,Antonius P. M. Langeveld,Carolyn M. Sue,Marina A. J. Tijssen,Christine Klein +30 more
TL;DR: A study was undertaken to identify the gene underlying DYT4 dySTONia, a dominantly inherited form of spasmodic dysphonia combined with other focal or generalized dystonia and a characteristic facies and body habitus in an Australian family.
Journal ArticleDOI
Clinical spectrum of homozygous and heterozygous PINK1 mutations in a large German family with Parkinson disease: role of a single hit?
Katja Hedrich,Johann Hagenah,Ana Djarmati,Anja Hiller,Thora Lohnau,Kathrin Lasek,Anne Grünewald,Rüdiger Hilker,Susanne Steinlechner,Heather Boston,Norman Kock,Christiane Schneider-Gold,Wolfram Kress,Hartwig R. Siebner,Ferdinand Binkofski,Rebekka Lencer,Alexander Münchau,Christine Klein +17 more
TL;DR: Long-term follow-up of a large family W provides an excellent opportunity to further evaluate the role of single heterozygous PINK1 mutations later in life, which will have major implications on genetic counseling.