M
Mark D. Johnson
Researcher at University of Massachusetts Medical School
Publications - 301
Citations - 18425
Mark D. Johnson is an academic researcher from University of Massachusetts Medical School. The author has contributed to research in topics: Medicine & Gene. The author has an hindex of 60, co-authored 289 publications receiving 16103 citations. Previous affiliations of Mark D. Johnson include National Institutes of Health & Georgetown University Medical Center.
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Journal ArticleDOI
The role of the human thalamus in language and memory: evidence from electrophysiological studies
TL;DR: The data reviewed here indicate that electrical stimulation of the dominant ventrolateral thalamus can produce deficits in language processing that are not seen after similar stimulation of one of the nondominant vents, raising the possibility that theThalamus is involved in coordinating the cognitive and motoric aspects of language production.
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Detailed Analysis of Periprocedural Strokes in Patients Undergoing Intracranial Stenting in Stenting and Aggressive Medical Management for Preventing Recurrent Stroke in Intracranial Stenosis (SAMMPRIS)
David Fiorella,Colin P. Derdeyn,Michael J. Lynn,Stanley L. Barnwell,Brian L. Hoh,Elad I. Levy,Mark R. Harrigan,Richard P. Klucznik,Cameron G. McDougall,G. Lee Pride,Osama O. Zaidat,Helmi L. Lutsep,Michael F. Waters,J. Maurice Hourihane,Andrei V. Alexandrov,David Chiu,Joni Clark,Mark D. Johnson,Michel T. Torbey,Zoran Rumboldt,Harry J. Cloft,Tanya N. Turan,Bethany F Lane,L. Scott Janis,Marc I. Chimowitz +24 more
TL;DR: Periprocedural strokes in SAMMPRIS had multiple causes with the most common being perforator occlusion, and excluding patients with these features from undergoing percutaneous transluminal angioplasty and stenting to lower the procedural risk would limit per cutaneous translumsinal angio-stenting and stent selection to a small subset of patients.
Journal ArticleDOI
Localization of NADPH diaphorase activity in monoaminergic neurons of the rat brain.
Mark D. Johnson,Pokay M. Ma +1 more
TL;DR: The observation that many mesopontine (but not medullary) serotoninergic neurons contain NADPH diaphorase activity suggests that these neurons may release both serotonin and nitric oxide.
Journal ArticleDOI
The NIH genetic testing registry: a new, centralized database of genetic tests to enable access to comprehensive information and improve transparency
Wendy S. Rubinstein,Donna Maglott,Jennifer M. Lee,Brandi L. Kattman,Malheiro Aj,Michael Ovetsky,Vichet Hem,Viatcheslav Gorelenkov,Guangfeng Song,Craig Wallin,Nora Husain,Shanmuga Chitipiralla,Kenneth S. Katz,Douglas W. Hoffman,Wonhee Jang,Mark D. Johnson,Fedor Karmanov,Alexander Ukrainchik,Mikhail Denisenko,Cathy Fomous,Kathy L. Hudson,James Ostell +21 more
TL;DR: The National Institutes of Health Genetic Testing Registry (GTR) maintains comprehensive information about testing offered worldwide for disorders with a genetic basis through basic information maintained in National Center for Biotechnology Information’s databases.
Journal ArticleDOI
Functional genomic analysis of chromosomal aberrations in a compendium of 8000 cancer genomes
Tae-Min Kim,Ruibin Xi,Ruibin Xi,Lovelace J. Luquette,Richard W. Park,Mark D. Johnson,Peter J. Park,Peter J. Park,Peter J. Park +8 more
TL;DR: An algorithm for detecting regions in which the copy number oscillates rapidly between fixed levels, indicative of chromothripsis is developed, and this comprehensive view of copy number alterations provides a framework for understanding the functional significance of various genomic alterations in cancer genomes.