Document 2793 DOCN M94A2793 TI Pharmacokinetics of GM-CSF and early leucocyte response after subcutaneous (SC) GM-CSF administration to AIDS patients. DT 9412 AU Henrivaux P; Fairon Y; C. H. St Joseph-Esperance, Liege, Belgium. SO Int Conf AIDS. 1994 Aug 7-12;10(1):223 (abstract no. PB0321). Unique Identifier : AIDSLINE ICA10/94369782 AB INTRODUCTION. Our study aimed to assess the pharmacokinetic profile of sc GM-CSF (Leucomax, Schering-Plough) in AIDS patients, to verify the efficacy of low doses of GM-CSF in AIDS patients and to verify the rapid leucocyte response that we suspected from our clinical experience. METHODS: Low doses of GM-CSF (mean +/- sem: 1.16 +/- 0.06 microgram/kg) were sc administered to 8 AIDS patients. Serum GM-CSF levels were determined by an immunoenzyme assay (Medgenix Diagnostics). Leucocyte counts and GM-CSF levels were determined at 0, 1, 3, 5, 7, 9, and 11 hours. RESULTS: GM-CSF serum levels reached peak values of 641 +/- 109 pg/ml at 3 hour. Leucocyte response is characterized by an initial drop (due to the decrease of neutrophils) at 1 hour followed by an increase reaching maximal value at 8-12 hour. CONCLUSIONS. Despite leucopenia, basal GM-CSF is low in AIDS patients. Subcutaneous GM-CSF resorption is not altered in AIDS patients. To our knowledge, our study is the first one to describe that leucocyte response after GM-CSF to AIDS presents a comparable profile to that observed in healthy subjects. DE Acquired Immunodeficiency Syndrome/*THERAPY Biological Response Modifiers/ADMINISTRATION & DOSAGE/ *PHARMACOKINETICS/THERAPEUTIC USE Drug Evaluation Granulocyte-Macrophage Colony-Stimulating Factor/ADMINISTRATION & DOSAGE/*PHARMACOKINETICS/THERAPEUTIC USE Human Injections, Subcutaneous Leukocyte Count/*DRUG EFFECTS MEETING ABSTRACT SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).