Cannabinoid receptor 2 positions and retains marginal zone B cells within the splenic marginal zone

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Cannabinoid receptor 2 positions and retains marginal zone B cells within the splenic marginal zone

Specialized B cells residing in the splenic marginal zone (MZ) continuously survey the blood for antigens and are important for immunity to systemic infections. However, the cues that uniquely attract cells to the MZ have not been defined. Previous work demonstrated that mice deficient in cannabinoid receptor 2 (CB2) have decreased numbers of MZ B cells but it has been unclear whether CB2 regul...

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Splenic marginal zone lymphoma.

Splenic marginal zone lymphoma (SMZL) is a specific low-grade small B-cell lymphoma that is incorporated in the World Health Organization classification. Characteristic features are splenomegaly, moderate lymphocytosis with villous morphology, intrasinusoidal pattern of involvement of various organs, especially bone marrow, and relative indolent course. Tumor progression with increase of blasti...

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Circulating splenic marginal zone B cells in human

The human peripheral B cell compartment displays a large population of IgMIgDCD27 “memory” B cell carrying a mutated Ig receptor. We show here, by phenotypic analysis, CDR3 spectratyping during a T-independent response and gene expression profiling of the different blood and splenic B cell subsets, that blood IgMIgDCD27 cells correspond to circulating splenic marginal zone B cells. Furthermore,...

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Surgical management of splenic marginal zone lymphoma.

OBJECTIVES Splenic marginal zone lymphoma (SMZL) is a rare indolent B-cell lymphoma with variable prognosis. As a result, there is sparse knowledge on the role of splenectomy and best management approaches. We aim to explore management strategies and outcomes amongst the cohort of SMZL patients at our centre. METHOD A retrospective review of all splenectomies performed at a tertiary referral ...

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Unusual Course of Splenic Marginal Zone Lymphoma

A 53-year-old woman was diagnosed with splenic marginal zone lymphoma by pathological examination on left submandibular lymph node and bone marrow biopsies and markedly enlarged spleen. Four cycles of Rituximab chemotherapy were given. Seven months after finishing Rituximab chemotherapy, she developed left upper extremity swelling without evidence of deep venous thrombosis. Repeat PET/CT scan d...

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ژورنال

عنوان ژورنال: Journal of Experimental Medicine

سال: 2011

ISSN: 1540-9538,0022-1007

DOI: 10.1084/jem.20111083