Biomaterial Database

Impaired lymphocyte transformation in Hodgkin's disease. Evidence for depletion of circulating t-lymphocytes. 1973

K M Matchett, and A T Huang, and W B Kremer

The kinetics of lymphocyte transformation induced by phytohemagglutinin (PHA) and pokeweed mitogen (PWM) were studied daily, with blood lymphocytes from normal individuals and from untreated patients in all stages of Hodgkin's disease (HD). In addition, spleen lymphocytes and lymph node lymphocytes were studied with similar techniques.Peripheral blood lymphocyte transformation stimulated by PHA was found to be depressed in all patients with HD (including those with localized disease and no symptoms) when small numbers of lymphocytes were cultured and studied during a 7-day period. Most patients with HD had an increased number of cells circulating in their blood which were actively synthesizing DNA. HD lymphocytes which demonstrated the highest initial rate of spontaneous DNA synthesis usually did not respond to PHA stimulation. Blood lymphocytes from normal individuals responded equally well to PHA and PWM in our system. HD blood lymphocytes consistently responded better to PWM than to PHA, with the response to PWM frequently within the normal range. Unless the spleen was extensively infiltrated with HD, spleen lymphocytes from patients with HD responded to PHA, even though the blood lymphocyte response was severely reduced. Lymph node lymphocyte response to PHA from patients with HD was variable, but correlated roughly with the blood lymphocyte response. It is hypothesized from the data presented that in HD, circulating thymus-dependent (T-)lymphocytes are stimulated by the presence of active disease. This stimulation of T-lymphocytes leads to a circulating T-cell depletion and to an increase in the number of cells circulating that are active in DNA synthesis. The degree of impairment of cell-mediated immunity would then depend upon the degree of T-lymphocyte depletion.

UI	MeSH Term	Description	Entries
D007111	Immunity, Cellular	Manifestations of the immune response which are mediated by antigen-sensitized T-lymphocytes via lymphokines or direct cytotoxicity. This takes place in the absence of circulating antibody or where antibody plays a subordinate role.	Cell-Mediated Immunity,Cellular Immune Response,Cell Mediated Immunity,Cell-Mediated Immunities,Cellular Immune Responses,Cellular Immunities,Cellular Immunity,Immune Response, Cellular,Immune Responses, Cellular,Immunities, Cell-Mediated,Immunities, Cellular,Immunity, Cell-Mediated,Response, Cellular Immune
D007962	Leukocytes	White blood cells. These include granular leukocytes (BASOPHILS; EOSINOPHILS; and NEUTROPHILS) as well as non-granular leukocytes (LYMPHOCYTES and MONOCYTES).	Blood Cells, White,Blood Corpuscles, White,White Blood Cells,White Blood Corpuscles,Blood Cell, White,Blood Corpuscle, White,Corpuscle, White Blood,Corpuscles, White Blood,Leukocyte,White Blood Cell,White Blood Corpuscle
D008198	Lymph Nodes	They are oval or bean shaped bodies (1 - 30 mm in diameter) located along the lymphatic system.	Lymph Node,Node, Lymph,Nodes, Lymph
D008212	Lymphocyte Depletion	Immunosuppression by reduction of circulating lymphocytes or by T-cell depletion of bone marrow. The former may be accomplished in vivo by thoracic duct drainage or administration of antilymphocyte serum. The latter is performed ex vivo on bone marrow before its transplantation.	Depletion, Lymphocyte
D008213	Lymphocyte Activation	Morphologic alteration of small B LYMPHOCYTES or T LYMPHOCYTES in culture into large blast-like cells able to synthesize DNA and RNA and to divide mitotically. It is induced by INTERLEUKINS; MITOGENS such as PHYTOHEMAGGLUTININS, and by specific ANTIGENS. It may also occur in vivo as in GRAFT REJECTION.	Blast Transformation,Blastogenesis,Lymphoblast Transformation,Lymphocyte Stimulation,Lymphocyte Transformation,Transformation, Blast,Transformation, Lymphoblast,Transformation, Lymphocyte,Activation, Lymphocyte,Stimulation, Lymphocyte
D008214	Lymphocytes	White blood cells formed in the body's lymphoid tissue. The nucleus is round or ovoid with coarse, irregularly clumped chromatin while the cytoplasm is typically pale blue with azurophilic (if any) granules. Most lymphocytes can be classified as either T or B (with subpopulations of each), or NATURAL KILLER CELLS.	Lymphoid Cells,Cell, Lymphoid,Cells, Lymphoid,Lymphocyte,Lymphoid Cell
D008297	Male		Males
D008875	Middle Aged	An adult aged 45 - 64 years.	Middle Age
D002452	Cell Count	The number of CELLS of a specific kind, usually measured per unit volume or area of sample.	Cell Density,Cell Number,Cell Counts,Cell Densities,Cell Numbers,Count, Cell,Counts, Cell,Densities, Cell,Density, Cell,Number, Cell,Numbers, Cell
D004247	DNA	A deoxyribonucleotide polymer that is the primary genetic material of all cells. Eukaryotic and prokaryotic organisms normally contain DNA in a double-stranded state, yet several important biological processes transiently involve single-stranded regions. DNA, which consists of a polysugar-phosphate backbone possessing projections of purines (adenine and guanine) and pyrimidines (thymine and cytosine), forms a double helix that is held together by hydrogen bonds between these purines and pyrimidines (adenine to thymine and guanine to cytosine).	DNA, Double-Stranded,Deoxyribonucleic Acid,ds-DNA,DNA, Double Stranded,Double-Stranded DNA,ds DNA