title: Induction of lymphoproliferative popliteal lymph node reaction by hydantoin derivatives: structure-activity relationships.
abstract: We evaluated the ability of a series of 3-phenylhydantoin derivatives to induce a lymphoproliferative popliteal lymph node reaction in C57B1/6 mice. 5-Aryl-3-phenylhydantoins induced a significant lymphoproliferative reaction, whereas the 5-alkyl-substituted and the unsubstituted 3-phenylhydantoins did not. 5-Alkyl-3-phenylhydantoins were unable to induce a lymphoproliferative reaction, unlike the corresponding 5-alkyl-3-phenyl-2-thiohydantoins, which have been reported to induce a significant lymphoproliferative reaction in the same strain of mice. Based on these results, we suggest that, to induce a lymphoproliferative popliteal lymph node reaction, hydantoins have to bind covalently to proteins through the N-atoms if they are activated by electrophilic groups bound to the hydantoin ring. We also suggest that 2-thiohydantoins can bind through their S-atom, whereas hydantoins cannot do so through their O-atoms.
authors.affiliation: Department of Microbiology, National Drug Institute, Sofia, Bulgaria.
authors.forename: A
authors.initials: A
authors.lastname: Marintchev
authors.forename: J
authors.initials: J
authors.lastname: Mirtcheva
authors.forename: A
authors.initials: A
authors.lastname: Sidjimov
authors.forename: M
authors.initials: M
authors.lastname: Haimova
mesh_terms: D000818:Animals; D005121:Extremities; D005260:Female; D006827:Hydantoins / Q000494:pharmacology*; D008198:Lymph Nodes / Q000187:drug effects* / Q000276:immunology*; D008213:Lymphocyte Activation / Q000187:drug effects*; D051379:Mice; D008810:Mice, Inbred C57BL; D010672:Phenytoin / Q000031:analogs & derivatives / Q000494:pharmacology
chemical_list: D006827:Hydantoins; D010672:Phenytoin