Infection with Neoehrlichia mikurensis promotes the development of malignant B‐cell lymphomas
Copyright policy )Infection with Neoehrlichia mikurensis promotes the development of malignant B‐cell lymphomas
SummaryThe tick‐borne pathogen Neoehrlichia (N.) mikurensis is implicated in persistent infection of the vascular endothelium. B cells are crucial for the host defence to this infection. Chronic stimulation of B cells may result in B‐cell transformation and lymphoma. Five patients with malignant B‐cell lymphoma and concomitant N. mikurensis infection were investigated regarding clinical picture, lymphoma subtype, B‐cell lymphoma immunophenotype and IGHV (variable region of the immunoglobulin heavy) gene repertoire. Three of the five patients improved markedly and ceased lymphoma treatment after doxycycline treatment to eliminate N. mikurensis. Sequencing the B‐cell lymphoma IGHV genes revealed preferred usage of the IGHV1 (IGHV1‐2, and ‐69) and IGHV3 (IGHV3‐15, ‐21, ‐23) families. In conclusion, N. mikurensis infection may drive the development of malignant B‐cell lymphomas. Eradication of the pathogen appears to induce remission with apparent curing of the lymphoma in some cases.
- University of Gothenburg Sweden
- Sahlgrenska University Hospital Sweden
Male, Lymphoma, B-Cell, Receptors, Antigen, B-Cell, Sequence Analysis, DNA, Middle Aged, Anti-Bacterial Agents, Immunophenotyping, Tick-Borne Diseases, Doxycycline, Anaplasmataceae Infections, Humans, Female, Aged
Male, Lymphoma, B-Cell, Receptors, Antigen, B-Cell, Sequence Analysis, DNA, Middle Aged, Anti-Bacterial Agents, Immunophenotyping, Tick-Borne Diseases, Doxycycline, Anaplasmataceae Infections, Humans, Female, Aged
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