Successful attenuation of allograft rejection rate is a major clinical aspect in transplant. The CD52 binding monoclonal antibody CAMPATH1 or alemtuzumab, in this aspect, shows a promise as an effective immunomodifier. This humanized monoclonal antibody efficiently depletes CD52-bearing mature B- and T lymphocytes from circulation and thereby causes transient lymphopenia, a condition for genera...

The most frequent targets of genetic alterations in human leukemias are transcription factor genes with essential functions in normal blood cell development. The Interferon Regulatory Factor 4 (IRF4) gene encodes a transcription factor important for key developmental stages of hematopoiesis, with known oncogenic implications in multiple myeloma, adult leukemias and lymphomas. Very few studies h...

BACKGROUND We surveyed lymphomas to determine the range of expression of the mantle cell lymphoma-associated SOX11 transcription factor and its relation to cyclin D1. DESIGN AND METHODS On hundred and seventy-two specimens were immunostained for the SOX11 N and C termini. Cyclin D1 was detected by immunohistochemistry and quantitative reverse transcriptase polymerase chain reaction; in situ h...

BACKGROUND Lymphoid neoplasm with 18q21.3/BCL2 and 8q24/MYC translocation to immunoglobulin (IG) genes as dual-hit lymphoma/leukemia is very rare and known to have a poor clinical outcome. DESIGN AND METHODS To clarify the clinicopathological characteristics of this malignancy, we analyzed 27 cases of cytogenetically proven dual-hit lymphoma/leukemia. RESULTS Dual-hit lymphoma/leukemia was ...

Granulocyte-macrophage colony-stimulating factor (GM-CSF) receptors (GMR) are expressed on myeloid cells throughout their maturational sequence. During myelopoiesis, GM-CSF induces the proliferation of precursors and has multiple effects on more mature cells; such effects include induction of maturation and priming for subsequent stimulation. GMR is expressed on a range of other cell types incl...

Correct diagnosis and classification of lymphoid neoplasms depends on the integration of morphologic, immunophenotypic and molecular genetic features. The mature small B cell lymphomas despite their overlapping histomorphologies, have different clinical behavior and treatment. In this review, differentia...

To understand the accumulation of plasma cells within RA synovium, the ability of rheumatoid synoviocytes to support the differentiation of B cells into plasma cells was explored. Tonsillar B lymphocytes cultured over confluent monolayers of synoviocytes, secreted threefold more Igs (mainly IgM) than B cells cultured directly on plastic well. More importantly, synoviocytes enhanced by 14-fold t...

background: hairy cell leukemia (hcl) is a chronic b-cell lymphoid leukemia characterized by pancytopenia, splenomegaly, myelofibrosis and the presence in peripheral blood, bone marrow and spleen of atypical lymphoid cells with a hairy aspect. the study aims to evaluate a group of patients with hairy cell leukemia, hospitalized in the clinic of hematology and oncology, kermanshah, iran, on a pe...

a 54 year old man with history of cardiomyopathy and chronic fibrillation first presented with bloody diarrhea. then during the assessment of his abnormal lab. data revealed cast nephropathy in renal biopsy, gamma peak in protein electrophoresis and fine lytic lesions in skull graphy. his bone marrow aspiration showed multiple myeloma and blood smear revealed plasma cell leukemia. our patient w...

The chromosome constitution of peripheral blood lymphocytes from nine cases of B-cell chronic lymphocytic leukemia and one case of B-cell prolymphocytic leukemia were studied at diagnosis following stimulation by B- and T-cell activators. Chromosome analysis with banding techniques revealed an extra chromosome 12 (trisomy 12) in 4 B-cell chronic lymphocytic leukemia cases and complicated abnorm...