title: [Mathematical modelling of the action of methotrexate on the kinetics of B-lymphocyte proliferation during the primary response].
abstract: A mathematical simulation model for checking hypotheses concerning specific features of methotrexate action on the primary antibody response is described. In general consistent interpretation of 8 experimental curves (an intact immune response and one when methotrexate was injected 72 hr after immunization; the data taken from literature) was obtained: the number of IgM-AbFCs in the mouse spleen in the first 4.5 days of immunization and the AbFC's labeling indices for three different 3H-thymidine injection schedules. It is concluded that methotrexate effects include the drug-induced lethality of the B-cells in G1-phase (early) and S-phase, S-phase blockage of the cell transfer cell retention on the G1/S boundary and also a decrease of the number of non-dividing IgM-AbFCs due to RNA and protein synthesis impairment.
mesh_terms: D000818:Animals; D000921:Antibody-Producing Cells / Q000166:cytology / Q000187:drug effects / Q000276:immunology; D001402:B-Lymphocytes / Q000166:cytology / Q000187:drug effects* / Q000276:immunology; D002454:Cell Differentiation / Q000187:drug effects; D002455:Cell Division / Q000187:drug effects; D007114:Immunization; D007075:Immunoglobulin M / Q000276:immunology; D008433:Mathematics; D008727:Methotrexate / Q000494:pharmacology*; D051379:Mice; D008954:Models, Biological; D013154:Spleen / Q000166:cytology / Q000187:drug effects / Q000276:immunology; D013997:Time Factors
chemical_list: D007075:Immunoglobulin M; D008727:Methotrexate
vernacular_title: Matematicheskoe modelirovanie deĭstviia metotreksata na kinetiku proliferatsii B-limfotsitov pri pervichnom otvete.