title: Immunohistochemical analysis of cyclin D1 protein in hematopoietic neoplasms with special reference to mantle cell lymphoma.
abstract: Immunohistochemical expression of PRAD1/cyclin D1 protein has been investigated in 106 tissue specimens of 104 cases of lymphoma, non-neoplastic lymphoid disorders and other hematologic malignancies by employing the monoclonal antibody 5D4 with formalin-fixed paraffin-embedded sections, using the microwave oven heating method. Positive neoplastic cells were found in 60 (74%) of 81 cases of non-Hodgkin's lymphoma. The positivity pattern was nuclear in 17 (85%) of 20 cases of mantle cell lymphoma in which cytoplasmic staining was also seen. This pattern of cyclin D1 positivity was in contrast to the negative staining of normal reactive mantle zones. In the other cases, positivity appeared to lie within the cell cytoplasm without nuclear staining, and most of the nodal follicular and diffuse B-cell lymphomas variously expressed PRAD1/cyclin D1. In contrast, the reaction was absent in a significant number of T-cell and extranodal B-cell lymphomas. Immunolocalization of PRAD1/cyclin D1 expression appears to be a useful diagnostic adjunct to discriminate mantle cell lymphoma from other non-Hodgkin's lymphomas.
authors.affiliation: Department of Pathology, Aichi Cancer Center Hospital, Nagoya.
authors.forename: S
authors.initials: S
authors.lastname: Nakamura
authors.forename: M
authors.initials: M
authors.lastname: Seto
authors.forename: S
authors.initials: S
authors.lastname: Banno
authors.forename: S
authors.initials: S
authors.lastname: Suzuki
authors.forename: T
authors.initials: T
authors.lastname: Koshikawa
authors.forename: K
authors.initials: K
authors.lastname: Kitoh
authors.forename: Y
authors.initials: Y
authors.lastname: Kagami
authors.forename: M
authors.initials: M
authors.lastname: Ogura
authors.forename: Y
authors.initials: Y
authors.lastname: Yatabe
authors.forename: M
authors.initials: M
authors.lastname: Kojima
mesh_terms: D015703:Antigens, CD; D014408:Biomarkers, Tumor; D018956:CD5 Antigens; D019938:Cyclin D1; D016213:Cyclins / Q000096:biosynthesis* / Q000235:genetics; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D007124:Immunoenzyme Techniques; D008221:Lymphoid Tissue / Q000378:metabolism; D016393:Lymphoma, B-Cell / Q000235:genetics / Q000378:metabolism* / Q000473:pathology; D018442:Lymphoma, B-Cell, Marginal Zone / Q000235:genetics / Q000378:metabolism; D016403:Lymphoma, Large B-Cell, Diffuse / Q000235:genetics / Q000378:metabolism; D008228:Lymphoma, Non-Hodgkin / Q000235:genetics / Q000378:metabolism; D008232:Lymphoproliferative Disorders / Q000235:genetics / Q000378:metabolism*; D015513:Oncogene Proteins / Q000096:biosynthesis* / Q000235:genetics; D011518:Proto-Oncogene Proteins / Q000096:biosynthesis* / Q000235:genetics
chemical_list: D015703:Antigens, CD; D014408:Biomarkers, Tumor; D018956:CD5 Antigens; D016213:Cyclins; D015513:Oncogene Proteins; D011518:Proto-Oncogene Proteins; D019938:Cyclin D1