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In vitro response of T cells from aplastic anemia patients to antilymphocyte globulin and phytohemagglutinin: colony-stimulating activity and lymphokine production.
Exp Hematol. 1991 Jun; 19(5):312-6.EH

Abstract

The aim of the present study was to compare the response of bone marrow (BM) lymphocytes from patients with aplastic anemia (AA) or normal controls to increasing doses of antilymphocyte globulin (ALG) or phytohemagglutinin (PHA). For this purpose BM T-enriched cells from 11 AA patients and 9 normal individuals were incubated with ALG (0-1000 micrograms/ml) or PHA (0%-10%) for 1 day, and the supernatants were tested for suppression/enhancement of granulocyte-macrophage colony-forming unit (CFU-GM) growth and for release of granulocyte-macrophage colony-stimulating factor (GM-CSF), tumor necrosis factor-alpha (TNF-alpha), and interferon-gamma (IFN-gamma) assayed with the enzyme-amplified sensitivity immunoassay (EASI). The production of colony-stimulating activity (CSA) by T cells primed with ALG and tested in the absence of exogenous GM-CSF correlated with the dose of ALG in priming cultures up to 14% EG (100% EG = CFU-GM growth with 30 ng/ml of GM-CSF). The amount of GM-CSF in the supernatants paralleled their capacity to sustain CFU-GM growth (up to 3.5 ng/ml of GM-CSF). Production of CSA or GM-CSF from T cells primed with PHA was significantly lower. Supernatants of PHA-primed T cells, when added to normal BM cells in the presence of exogenous GM-CSF, produced a dose-dependent inhibition of CFU-GM growth (down to 13% +/- 10% EG). The same supernatants contained detectable amounts of IFN-gamma and TNF-alpha (21 +/- 6.7 IU/ml and 4.6 +/- 2.9 ng/ml, respectively). IFN-gamma production from severe AA (SAA) T cells in response to PHA was significantly superior to the IFN-gamma production from normal T cells (21 +/- 6.7 IU/ml vs 9.5 +/- 7.1 IU/ml, p = 0.02).(ABSTRACT TRUNCATED AT 250 WORDS)

Authors+Show Affiliations

Department of Hematology, San Martino Hospital, Genoa, Italy.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

1902792

Citation

Tong, J, et al. "In Vitro Response of T Cells From Aplastic Anemia Patients to Antilymphocyte Globulin and Phytohemagglutinin: Colony-stimulating Activity and Lymphokine Production." Experimental Hematology, vol. 19, no. 5, 1991, pp. 312-6.
Tong J, Bacigalupo A, Piaggio G, et al. In vitro response of T cells from aplastic anemia patients to antilymphocyte globulin and phytohemagglutinin: colony-stimulating activity and lymphokine production. Exp Hematol. 1991;19(5):312-6.
Tong, J., Bacigalupo, A., Piaggio, G., Figari, O., Sogno, G., & Marmont, A. (1991). In vitro response of T cells from aplastic anemia patients to antilymphocyte globulin and phytohemagglutinin: colony-stimulating activity and lymphokine production. Experimental Hematology, 19(5), 312-6.
Tong J, et al. In Vitro Response of T Cells From Aplastic Anemia Patients to Antilymphocyte Globulin and Phytohemagglutinin: Colony-stimulating Activity and Lymphokine Production. Exp Hematol. 1991;19(5):312-6. PubMed PMID: 1902792.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - In vitro response of T cells from aplastic anemia patients to antilymphocyte globulin and phytohemagglutinin: colony-stimulating activity and lymphokine production. AU - Tong,J, AU - Bacigalupo,A, AU - Piaggio,G, AU - Figari,O, AU - Sogno,G, AU - Marmont,A, PY - 1991/6/1/pubmed PY - 1991/6/1/medline PY - 1991/6/1/entrez SP - 312 EP - 6 JF - Experimental hematology JO - Exp Hematol VL - 19 IS - 5 N2 - The aim of the present study was to compare the response of bone marrow (BM) lymphocytes from patients with aplastic anemia (AA) or normal controls to increasing doses of antilymphocyte globulin (ALG) or phytohemagglutinin (PHA). For this purpose BM T-enriched cells from 11 AA patients and 9 normal individuals were incubated with ALG (0-1000 micrograms/ml) or PHA (0%-10%) for 1 day, and the supernatants were tested for suppression/enhancement of granulocyte-macrophage colony-forming unit (CFU-GM) growth and for release of granulocyte-macrophage colony-stimulating factor (GM-CSF), tumor necrosis factor-alpha (TNF-alpha), and interferon-gamma (IFN-gamma) assayed with the enzyme-amplified sensitivity immunoassay (EASI). The production of colony-stimulating activity (CSA) by T cells primed with ALG and tested in the absence of exogenous GM-CSF correlated with the dose of ALG in priming cultures up to 14% EG (100% EG = CFU-GM growth with 30 ng/ml of GM-CSF). The amount of GM-CSF in the supernatants paralleled their capacity to sustain CFU-GM growth (up to 3.5 ng/ml of GM-CSF). Production of CSA or GM-CSF from T cells primed with PHA was significantly lower. Supernatants of PHA-primed T cells, when added to normal BM cells in the presence of exogenous GM-CSF, produced a dose-dependent inhibition of CFU-GM growth (down to 13% +/- 10% EG). The same supernatants contained detectable amounts of IFN-gamma and TNF-alpha (21 +/- 6.7 IU/ml and 4.6 +/- 2.9 ng/ml, respectively). IFN-gamma production from severe AA (SAA) T cells in response to PHA was significantly superior to the IFN-gamma production from normal T cells (21 +/- 6.7 IU/ml vs 9.5 +/- 7.1 IU/ml, p = 0.02).(ABSTRACT TRUNCATED AT 250 WORDS) SN - 0301-472X UR - https://www.unboundmedicine.com/medline/citation/1902792/In_vitro_response_of_T_cells_from_aplastic_anemia_patients_to_antilymphocyte_globulin_and_phytohemagglutinin:_colony_stimulating_activity_and_lymphokine_production_ L2 - https://www.diseaseinfosearch.org/result/556 DB - PRIME DP - Unbound Medicine ER -