PROPERTIES OF THE RESEARCH PUBLICATIONS IN NEUROMYELITIS OPTICA. THE USE OF THE WEB OF SCIENCE DATABASE Lívia E. C. Talim, Natália C. Talim, Mariza C. T. Talim, Jane R Guirado, Gisele O. Lima, Diogo C Carvalho, Tauana S Tironi, Izabela C A Duarte, Anderson Silva, Juliana M. S. S. Amaral, Rodrigo Kleinpaul, Márcia Prates, Carolina R. Araujo, Cristiane F. Rocha, Marco A. Lana-Peixoto. CIEM MS Research Center, Federal University of Minas Gerais Medical School, Belo Horizonte, Brazil Background Results Neuromyelitis optica (NMO) is a central nervous system We found a total of 2746 indexed documents. No document was found before 1945. The first authors were most frequently associated with institutions in USA (24%), Japan (13%), and Germany (10%). Brazil is ranked #9 in the world and #1 in Latin America. Mayo Clinic, Tohoku University and University of California in San Francisco were the most frequent enhanced-organizations. Types of indexed documents included original papers (n 1338, 48%), meeting abstracts (n 818, 30%), and reviews (n 287, 10%). There has been a tremendous increment in the yearly distribution of number of publications in the last decade, from 17 in 2000 to 487 in 2013. 95% of the publications are in English language. The most frequent funding agencies or companies included the Guthy Jackson Charitable Foundation, Merck Serono, NIH, Biogen Idec, and National Multiple Sclerosis Society. disorder mainly mediated by anti-aquaporin-4 antibody. Although since its early description the disease has been of continuous interest to neuroscientists, there has been a nonlinear growth in publication rate in the course of its history. Increments in number of publications have been usually associated with most significant advances in understanding of the disease. We looked at the publications on NMO to analyze some of their properties and qualities that could provide insights about global involvement and trends regarding knowledge of the disease. Methods We searched the Web of Science TM, Science Citation Index - Version 2006 - for publications on NMO up to May 31, 2014. We used the following terms: neuromyelitis optica, Devic´s syndrome, Devic´s disease, neuro-optic myelitis, neuropticomielitis aguda, neuropticomielitis, opthalmoneuromyélite, oftalmomielitis, mielitis oftálmica, optic neuritis and myelitis, NMO. The documents were refined to better understand trends in global research, affiliations, categories of contribution, research areas, societies/committees, year of publication, languages, organizations-enhanced, and funding agencies. V V Number of publications on neuromyelitis optica in the 20th and 21st centuries 1949-1999 3,7% 2000-2013 96,3% Types of publications on neuromyelitis optica Distribution of publications on neuromyelitis optica by countries 60.00 50.00 30.00 48.69 40.00 25.00 24.02 30.00 29.41 20.00 20.00 10.00 15.00 10.00 0.00 13.21 9.19 0.00 6.07 4.13 2.08 0.43 0.36 0.25 0.14 8.87 7.11 5.00 10.56 5.92 5.13 4.42 4.27 2.91 2.62 2.51 Conclusion There has been an increasing global interest in NMO in the last decade. Institutions in the US and Japan have contributed the most to research in the field