NDLI: Intra-tumoral cytolytic cells: Pattern of distribution in B-cell non Hodgkin’s lymphoma

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Intra-tumoral cytolytic cells: Pattern of distribution in B-cell non Hodgkin’s lymphoma

Content Provider	Semantic Scholar
Author	Perambakam, Supriya Naresh, Kashi Nerurkar, Ashutosh Nadkarni, Jayshree J.
Copyright Year	2009
Abstract	Non-Hodgkin’s lymphomas (NHLs) constitute a heterogeneous group of lymphoid neoplasms and a majority of them in India are of B-cell phenotype. Varying numbers of T lymphocytes and natural killer (NK) cells are consistently present within the lymph nodes (LNs). The role of these “reactive” cells is becoming understood. TIA-1 is a cytotoxic granule associated RNA binding protein, the expression of which is restricted to cytotoxic T lymphocytes (CTLs) and NK cells. Snap frozen lymph node biopsies obtained from 41 B-cell NHLs were localized for intra-tumoral TIA-1 + cytolytic cells by immunohistochemistry. Distribution of T cell subsets and NK cells were also quantified. Cells expressing TIA-1 antigen was observed in all the cases, seen as a strong granular cytoplasmic signal. Results indicate significantly higher number of TIA-1 cytolytic cells outside (periphery of the follicle and interfollicular areas) than within the neoplastic follicle in follicular lymphomas (p<0.001). In small lymphocytic lymphomas, cytolytic cells were mainly seen as uniformly scattered single cells, distributed throughout the tumor environment. In mantle cell and diffuse large B-cell lymphomas these were most often seen as small clusters and less frequently as singly scattered cells. Higher numbers of CD4+ than the CD8+ T cells were observed in most cases. Contrary to the follicles in follicular hyperplasia, CD57+ NK cells were predominantly observed outside the neoplastic follicle in follicular lymphomas (FLs). These results outline specific interactions between the potential antitumoral cytolytic and the malignant cells of B-cell NHLs.
Starting Page	114
Ending Page	117
Page Count	4
File Format	PDF HTM / HTML
DOI	10.1007/BF03032360
Alternate Webpage(s)	http://por.hu/2000/6/2/0114/0114a.pdf
PubMed reference number	10936786
Alternate Webpage(s)	https://doi.org/10.1007/BF03032360
Journal	Medline
Volume Number	6
Journal	Pathology & Oncology Research
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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