• Chengxian Yang, Xue Wang, Xiaoli Tang, Renzhi Wang, and Xinjie Bao.
• Department of Neurosurgery, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China.
• World Neurosurg. 2020 Feb 1; 134: e405-e411.

ObjectiveAlthough the overall publication trends in Parkinson disease (PD) and characteristics of top-cited articles have been reported, there was only 1 literature analysis published in 2012 with a special focus on stem cells. It is necessary to evaluate and update the global publication trends in stem cell research of PD.MethodsWe identified the publications designated as "article" about stem-cell research of PD between 1999 and 2018 in the Web of Science Core Collection. We used HistCite to analyze annual outputs, journals, countries/regions, and institutions every 5 years and visualized global collaborations between publications by VOSviewer. Moreover, to track the growing hotspots, MeSH terms of each publication were obtained by Medical Text Indexer according to the title and abstract.ResultsWe described the publication trends and topic hotspots of stem-cell research of PD by bibliometric analysis of 1709 papers. Researchers showed growing interest in publishing relevant scientific literature in journals associated with stem cells or multidisciplinary science. Stem cell research of PD was more common in developed countries and regions. The United States of America was the most contributive country throughout, accounting for 33% of total publications and ranking first in all 5-year periods. Harvard University was the most productive institution in this area, ranking first during 1999-2003, 2004-2008, and 2009-2013. The application of induced pluripotent stem cells was at the forefront of cell therapies for PD.ConclusionsThese bibliometric findings suggest that stem cell research consistently promotes the understanding and treatment of PD.Copyright © 2019 Elsevier Inc. All rights reserved.

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