title: Absence of effects on platelet membrane fluidity by antibiotics in ESR spectra.
abstract: The effect of several antibiotics on rat platelet membrane fluidity was examined by ESR spectrometry using 5-doxyl stearate as the spin probe. Latamoxef, cefamandole, cefotaxime and carbenicillin had negligible effects on the order parameters, the indices of membrane fluidity, of platelet-rich plasma or washed platelets at high concentrations that would inhibit ADP-induced rat platelet aggregation in vitro. A further in vivo study with one of these antibiotics, latamoxef, showed no significant effect on the fluidity based on ESR data.
mesh_terms: D000244:Adenosine Diphosphate / Q000494:pharmacology; D000818:Animals; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D001792:Blood Platelets / Q000187:drug effects / Q000648:ultrastructure*; D004578:Electron Spin Resonance Spectroscopy; D006801:Humans; D066298:In Vitro Techniques; D008297:Male; D008560:Membrane Fluidity / Q000187:drug effects*; D010974:Platelet Aggregation / Q000187:drug effects; D051381:Rats
chemical_list: D000900:Anti-Bacterial Agents; D000244:Adenosine Diphosphate