Infectious serologies and autoantibodies in Wegener's granulomatosis and other vasculitides: novel associations disclosed using the Rad BioPlex 2200.
In this study we assess the presence of antibodies against infectious agents as well as for a variety of autoantibodies in an attempt to establish associations between various vasculitides and infections in order to shed light on the etiopathogenesis of these diseases and perhaps implicate a potential cure. Sera from patients with Wegener's granulomatosis (WG), polyarteritis nodosa, microscopic polyangiitis, Churg Strauss, and giant cell arteritis were compared to healthy control sera. Serum samples were assessed, using the Bio-Rad BioPlex 2200, for the presence of Toxoplama gondii, cytomegalovirus (CMV), Epstein-Barr virus (EBV), Treponema pallidum, and Saccharomyces cerevisiae. Hepatitis B virus (HBV), hepatitis C virus (HCV), and anti-Helicobacter pylori antibodies were assessed by ELISA. In addition, sera were tested for a panel of antibodies associated with thrombophilia as well as various autoantibodies. The prevalence of antibodies toward HCV and H. pylori was significantly higher among patients with WG. IgG antibodies toward T. gondii and IgM antibodies toward CMV were significantly more common among WG patients than among controls. WG patients exhibited more antibodies toward EBV viral capsid antigen IgG and EBV early antigen IgG compared to sera from healthy controls. In WG, positive associations were disclosed between CMV IgG antibodies and the presence of gastrointestinal manifestations and renal involvement, and there was a higher Birmingham vasculitis activity score in association with elevated titers of EBV viral capsid antigen IgG antibodies. Otorhinolaryngeal manifestations were more common in those with positive IgG antibodies for EBV early antigen. Our results unveil novel associations between WG and various infectious agents, including HCV, H. pylori, T. gondii, CMV, and EBV. In addition to putative roles in initiation and exacerbation of the vasculitic process, it seems that these infectious agents also modulate the clinical phenotype of the disease.
Lidar
Merav
M
Center for Autoimmune Disease, Rheumatology Unit, Sheba Medical Center, Tel Hashomer, Israel.
Lipschitz
Noga
N
Langevitz
Pnina
P
Barzilai
Ori
O
Ram
Maya
M
Porat-Katz
Bat-Sheba
BS
Pagnoux
Christian
C
Guilpain
Philippe
P
Sinico
Renato Alberto
RA
Radice
Antonella
A
Bizzaro
Nicola
N
Damoiseaux
Jan
J
Tervaert
Jan Willem Cohen
JW
Martin
Javier
J
Guillevin
Loïc
L
Bombardieri
Stefano
S
Shoenfeld
Yehuda
Y
D000818:Animals; D000907:Antibodies, Bacterial / Q000097:blood*; D000908:Antibodies, Fungal / Q000097:blood; D000913:Antibodies, Protozoan / Q000097:blood*; D000914:Antibodies, Viral / Q000097:blood*; D001323:Autoantibodies / Q000097:blood*; D001424:Bacterial Infections / Q000097:blood / Q000276:immunology; D003587:Cytomegalovirus / Q000276:immunology; D004797:Enzyme-Linked Immunosorbent Assay; D014890:Granulomatosis with Polyangiitis / Q000097:blood / Q000276:immunology*; D016480:Helicobacter pylori / Q000276:immunology; D016174:Hepacivirus / Q000276:immunology; D006515:Hepatitis B virus / Q000276:immunology; D004854:Herpesvirus 4, Human / Q000276:immunology; D006801:Humans; D007118:Immunoassay / Q000379:methods; D007074:Immunoglobulin G / Q000097:blood; D007075:Immunoglobulin M / Q000097:blood; D012441:Saccharomyces cerevisiae / Q000276:immunology; D014122:Toxoplasma / Q000276:immunology; D014123:Toxoplasmosis / Q000097:blood / Q000276:immunology; D014210:Treponema pallidum / Q000276:immunology; D014657:Vasculitis / Q000097:blood / Q000276:immunology*; D014777:Virus Diseases / Q000097:blood / Q000276:immunology
D000907:Antibodies, Bacterial; D000908:Antibodies, Fungal; D000913:Antibodies, Protozoan; D000914:Antibodies, Viral; D001323:Autoantibodies; D007074:Immunoglobulin G; D007075:Immunoglobulin M