Autoantibodies to IgE can induce the release of proinflammatory and vasoactive mediators from human cardiac mast cells

© 2022. The Author(s)..

Mast cells are multifunctional immune cells with complex roles in tissue homeostasis and disease. Cardiac mast cells (HCMCs) are strategically located within the human myocardium, in atherosclerotic plaques, in proximity to nerves, and in the aortic valve. HCMCs express the high-affinity receptor (FcεRI) for IgE and can be activated by anti-IgE and anti-FcεRI. Autoantibodies to IgE and/or FcεRI have been found in the serum of patients with a variety of immune disorders. We have compared the effects of different preparations of IgG anti-IgE obtained from patients with atopic dermatitis (AD) with rabbit IgG anti-IgE on the release of preformed (histamine and tryptase) and lipid mediators [prostaglandin D2 (PGD2) and cysteinyl leukotriene C4 (LTC4)] from HCMCs. Functional human IgG anti-IgE from one out of six AD donors and rabbit IgG anti-IgE induced the release of preformed (histamine, tryptase) and de novo synthesized mediators (PGD2 and LTC4) from HCMCs. Human IgG anti-IgE was more potent than rabbit IgG anti-IgE in inducing proinflammatory mediators from HCMCs. Human monoclonal IgE was a competitive antagonist of both human and rabbit IgG anti-IgE. Although functional anti-IgE autoantibodies rarely occur in patients with AD, when present, they can powerfully activate the release of proinflammatory and vasoactive mediators from HCMCs.

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:23

Enthalten in:

Clinical and experimental medicine - 23(2023), 4 vom: 26. Aug., Seite 1265-1276

Sprache:

Englisch

Beteiligte Personen:

Poto, Remo [VerfasserIn]
Patella, Vincenzo [VerfasserIn]
Criscuolo, Gjada [VerfasserIn]
Marone, Gianni [VerfasserIn]
Coscioni, Enrico [VerfasserIn]
Varricchi, Gilda [VerfasserIn]

Links:

Volltext

Themen:

820484N8I3
Autoantibodies
EC 3.4.21.59
Heart
Histamine
Immunoglobulin G
Immunosuppressive Agents
Journal Article
Leukotriene C4
Mast cells
Prostaglandin D2
Tryptases

Anmerkungen:

Date Completed 03.08.2023

Date Revised 03.08.2023

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1007/s10238-022-00861-w

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM343994879