Evaluation of a Multiparametric Immunofluorescence Assay for Standardization of Neuromyelitis Optica Serology Letizia Granieri,#1,2,* Fabiana Marnetto,#1,2 Paola Valentino,1,2 Jessica Frau,3 Agata Katia Patanella,4 Petra Nytrova,5 Patrizia Sola,6 Marco Capobianco,1 Sven Jarius,7 and Antonio Bertolotto1,2 Author information ? Article notes ? Copyright and License information ? Go to: Abstract.
Clinical Usefulness of Cell-based Indirect Immunofluorescence Assay for the Detection of Aquaporin-4 Antibodies in Neuromyelitis Optica Spectrum Disorder Eun-suk Kang, M.D.,1 Ju-Hong Min, M.D.,2 Kwang Ho Lee, M.D.,2 and Byoung Joon Kim, M.D.2 Author information ? Article notes ? Copyright and License information ? Go to: Abstract. Background The presence of antibodies to aquaporin-4 (AQP4) has been identified as a key characteristic of neuromyelitis optica spectrum disorder (NMOSD), an autoimmune inflammatory demyelinating central nervous system (CNS) disorder. We evaluated the performance of a cell-based indirect immunofluorescence assay (CIIFA) for detecting AQP4 antibodies using antigen prepared with a recombinant AQP4 peptide transfection technique and assessed the usefulness of CIIFA for diagnosis of NMOSD in routine clinical practice.
BACKGROUND: Recently, a highly specific serum autoantibody was discovered in patients with neuromyelitis optica, called NMO-IgG, and aquaporin-4, the most abundant water channel in the CNS, was identified as the target antigen.
Background: NMO-IgG autoantibody is now considered a useful serum biomarker of neuromyelitis optica (NMO). A series of clinical and pathological observations suggest that NMO-IgG may play a central role in NMO physiopathology. Objective: The aim of this in vitro-based study was to characterize molecular and functional consequences of interaction between NMO-IgG and primary cultures of astrocytes.