Serum antibodies to phosphatidylcholine in MS

Autor: Howard L. Weiner, Esther Escudero, Maria Cruz Sádaba, Francisco J. Quintana, Veit Rothhammer, Stephen L. Hauser, Roberto Alvarez-Lafuente, Rohit Bakshi, Cristina Sebal, Pia Kivisäkk, Guillermo Izquierdo, Sergio E. Baranzini, Jorge R. Oksenberg, Maria Isabel Garcia Sanchez, Ursula Munoz
Rok vydání: 2020
Předmět:
Zdroj: Neurology(R) neuroimmunology & neuroinflammation, vol 7, iss 4
Neurology® Neuroimmunology & Neuroinflammation
Popis: Author(s): Sadaba, Maria Cruz; Rothhammer, Veit; Munoz, Ursula; Sebal, Cristina; Escudero, Esther; Kivisakk, Pia; Garcia Sanchez, Maria Isabel; Izquierdo, Guillermo; Hauser, Stephen L; Baranzini, Sergio E; Oksenberg, Jorge R; Alvarez-Lafuente, Roberto; Bakshi, Rohit; Weiner, Howard L; Quintana, Francisco J | Abstract: ObjectiveTo evaluate the value of serum immunoglobulin G (IgG) and immunoglobulin M (IgM) antibodies reactive with phosphatidylcholine (PC) and lactosylceramide (LC) as biomarkers in MS.MethodsWe developed an ultrasensitive ELISA technique to analyze serum IgG and IgM antibodies to LC and PC, which we used to analyze samples from 362 patients with MS, 10 patients with non-MS myelin diseases (Non-MSMYDs), 11 patients with nonmyelin neurologic diseases (Non-MYNDs), and 80 controls. MS serum samples included clinically isolated syndrome (CIS, n = 17), relapsing-remitting MS (RRMS, n = 62), secondary progressive MS (SPMS, n = 50), primary progressive MS (PPMS, n = 37), and benign MS (BENMS, n = 36).ResultsWe detected higher levels of serum IgM antibodies to PC (IgM-PC) in MS than control samples; patients with CIS and RRMS showed higher IgM-PC levels than patients with SPMS, PPMS, and BENMS and controls. MS and control samples did not differ in serum levels of IgM antibodies reactive with LC, nor in IgG antibodies reactive with LC or PC.ConclusionsSerum IgM-PC antibodies are elevated in patients with MS, particularly during the CIS and RRMS phases of the disease. Thus, serum IgM-PC is a candidate biomarker for early inflammatory stages of MS.Classification of evidenceThis study provides Class III evidence that serum antibodies to PC are elevated in patients with MS. The study is rated Class III because of the case control design and the risk of spectrum bias: antibody levels in patients with MS were compared with healthy controls.
Databáze: OpenAIRE