The presence of Mott cells in the lymph nodes of rats with experimental autoimmune encephalomyelitis.

Autor: Martinovic T; Institute of Histology and Embryology, Faculty of Medicine, University of Belgrade, Višegradska 26, 11000, Belgrade, Serbia., Vidicevic S; Institute of Medical and Clinical Biochemistry, Faculty of Medicine, University of Belgrade, Belgrade, Serbia., Ciric D; Institute of Histology and Embryology, Faculty of Medicine, University of Belgrade, Višegradska 26, 11000, Belgrade, Serbia. darko.ciric@med.bg.ac.rs., Bumbasirevic V; Institute of Histology and Embryology, Faculty of Medicine, University of Belgrade, Višegradska 26, 11000, Belgrade, Serbia.; Serbian Academy of Sciences and Arts, Belgrade, Serbia., Stanojevic Z; Institute of Medical and Clinical Biochemistry, Faculty of Medicine, University of Belgrade, Belgrade, Serbia., Tasic J; Institute of Medical and Clinical Biochemistry, Faculty of Medicine, University of Belgrade, Belgrade, Serbia., Petricevic S; Institute of Medical and Clinical Biochemistry, Faculty of Medicine, University of Belgrade, Belgrade, Serbia., Isakovic A; Institute of Medical and Clinical Biochemistry, Faculty of Medicine, University of Belgrade, Belgrade, Serbia., Martinovic VC; Beo-lab, Belgrade, Serbia., Drndarevic N; Beo-lab, Belgrade, Serbia., Trajkovic V; Institute of Microbiology and Immunology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia., Kravic-Stevovic T; Institute of Histology and Embryology, Faculty of Medicine, University of Belgrade, Višegradska 26, 11000, Belgrade, Serbia.
Jazyk: angličtina
Zdroj: Histochemistry and cell biology [Histochem Cell Biol] 2024 Mar; Vol. 161 (3), pp. 287-295. Date of Electronic Publication: 2023 Nov 12.
DOI: 10.1007/s00418-023-02252-y
Abstrakt: Mott cells are plasma cells that have multiple spherical Russell bodies packed in their cytoplasm. Russell bodies are dilated endoplasmic reticulum cisternae filled with aggregates of immunoglobulins that are neither secreted nor degraded. Mott cells were observed in our study by light and electron microscope in the lymph nodes of rats with experimental autoimmune encephalomyelitis (EAE), an animal model of multiple sclerosis. Mott cells were detected on hematoxylin and eosin (HE)-stained lymph node sections as vacuolated cells with eccentrically positioned nuclei and large number of faint blue spherical inclusions in the cytoplasm. Electron microscopic investigation revealed the presence of Russell bodies of the "medusa" form inside Mott cells in lymph node ultra-thin sections of EAE animals. Mott cells expressed the plasma cell marker CD138 and either kappa or lambda immunoglobulin light chains, indicating their origin from polyclonally activated B cells. Finally, Mott cells were associated with active EAE, as they were not found in the lymph nodes of EAE-resistant Albino Oxford rats. The presence of Russell bodies implies an excessive production of immunoglobulins in EAE, thus further emphasizing the role of B cells, and among them Mott cells, in the pathogenesis of this animal model of multiple sclerosis.
(© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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