Association of anti-Helicobacter pylori neutrophil-activating protein antibody response with anti-aquaporin-4 autoimmunity in Japanese patients with multiple sclerosis and neuromyelitis optica

Wei Li, Motozumi Minohara, Hua Piao, Takuya Matsushita, Katsuhisa Masaki, Takeshi Matsuoka, Noriko Isobe, Jen Jen Su, Yasumasa Ohyagi, Jun Ichi Kira

Research output: Contribution to journalArticle

53 Citations (Scopus)

Abstract

There are two distinct subtypes of multiple sclerosis (MS) in Asians: opticospinal (OSMS) and conventional (CMS). OSMS has similar features to neuromyelitis optica (NMO) and half of OSMS patients have the NMO-Immunoglobulin G (IgG)/ anti-aquaporin-4 (AQP4) antibody. We reported that Helicobacter pylori (H. pylori) infection was significantly less common in CMS patients than controls. To reveal the immune responses to the H. pylori neutrophil-activating protein (HP-NAP) in Japanese MS patients, according to anti-AQP4 antibody status, sera from 162 MS patients, 37 patients with other inflammatory neurological diseases (OIND), and 85 healthy subjects were assayed for anti-H. pylori antibodies, anti-HP-NAP antibodies, and myeloperoxidase (MPO) by enzyme immunoassays. H. pylori seropositivity rates were significantly higher in anti-AQP4 antibody-positive MS/NMO (AQP4 + /MS) patients (19/27, 70.4%) than anti-AQP4 antibody-negative CMS (AQP4 - /CMS) patients (22/83, 26.5%). Among H. pylori-infected individuals, the anti-HP-NAP antibody was significantly more common in AQP4 + /MS and AQP4 - /OSMS patients than healthy subjects (36.8%, 34.6% versus 2.8%). Among the AQP4 + /MS patients, a significant positive correlation between anti-HP-NAP antibody levels and the final Kurtzkes Expanded Disability Status Scale scores was found, and MPO levels were higher in anti-HP-NAP antibody-positive patients than anti-HP-NAP antibody-negative ones. Therefore, HP-NAP may be associated with the pathology of anti-AQP4 antibody-related neural damage in MS/NMO patients.

Original languageEnglish
Pages (from-to)1411-1421
Number of pages11
JournalMultiple Sclerosis
Volume15
Issue number12
DOIs
Publication statusPublished - Dec 1 2009

All Science Journal Classification (ASJC) codes

  • Neurology
  • Clinical Neurology

Fingerprint Dive into the research topics of 'Association of anti-Helicobacter pylori neutrophil-activating protein antibody response with anti-aquaporin-4 autoimmunity in Japanese patients with multiple sclerosis and neuromyelitis optica'. Together they form a unique fingerprint.

  • Cite this