title: Effect of indole-3-acetic acid administration by gavage and by subcutaneous injection on rat leukocytes.
abstract: This study was done to investigate the effect of indole-3-acetic acid (IAA) administered subcutaneously and by gavage on neutrophil function and cytotoxicity in neutrophils and lymphocytes. A gavage administration resulted in an increase in phagocytic capacity in neutrophils in a dose depended manner for 1 mg, 2 mg, 18 mg, and 40 mg of IAA per kg of body mass, respectively, compared with the control. Similarly, subcutaneous administration of IAA at 2, 18, and 40 mg per kg of body mass promoted a significant rise in phagocytosis by neutrophils. H2O2 production in neutrophils from treated rats by gavage was similar to those receiving subcutaneous IAA treatment, and did not show a significant difference between treatments and control. IAA treatment, whether by gavage or subcutaneous, did not produce an alteration in antioxidant enzyme activities or in glucose-6-phosphate dehydrogenase activity of either neutrophils or lymph nodes. Subcutaneous IAA administration did not alter the neutrophil and lymphocyte death as deduced by unaltered membrane integrity, DNA fragmentation and mitochondrial transmembrane potential, compared with controls. In conclusion, IAA administration either subcutaneously or by gavage could increase the phagocytic capacity by neutrophils and this acid administration did not have prooxidant effects or cytotoxic effects on neutrophils and lymphocytes.
authors.affiliation: Department of Basic Science, Faculty of Animal Science and Food Engineering (FZEA), Pirassununga, SP, Brazil.
authors.forename: Silvana M P
authors.initials: SM
authors.lastname: Pugine
authors.forename: Poliana
authors.initials: P
authors.lastname: de P Brito
authors.forename: Tatiane C
authors.initials: TC
authors.lastname: Alba-Loureiro
authors.forename: Ernane J X
authors.initials: EJ
authors.lastname: Costa
authors.forename: Rui
authors.initials: R
authors.lastname: Curi
authors.forename: Mariza P
authors.initials: MP
authors.lastname: De Melo
mesh_terms: D000284:Administration, Oral; D000818:Animals; D002374:Catalase / Q000378:metabolism; D002470:Cell Survival / Q000187:drug effects; D053938:DNA Fragmentation / Q000187:drug effects; D004305:Dose-Response Relationship, Drug; D005434:Flow Cytometry; D005954:Glucosephosphate Dehydrogenase / Q000378:metabolism; D005980:Glutathione Reductase / Q000378:metabolism; D006861:Hydrogen Peroxide / Q000378:metabolism; D007210:Indoleacetic Acids / Q000008:administration & dosage / Q000494:pharmacology*; D007279:Injections, Subcutaneous; D007962:Leukocytes / Q000166:cytology / Q000187:drug effects* / Q000378:metabolism; D008214:Lymphocytes / Q000166:cytology / Q000187:drug effects / Q000378:metabolism; D008297:Male; D053078:Membrane Potential, Mitochondrial / Q000187:drug effects; D009504:Neutrophils / Q000166:cytology / Q000187:drug effects / Q000378:metabolism; D009195:Peroxidase / Q000378:metabolism; D010587:Phagocytosis / Q000187:drug effects; D051381:Rats; D017208:Rats, Wistar; D013482:Superoxide Dismutase / Q000378:metabolism
chemical_list: D007210:Indoleacetic Acids; C030737:indoleacetic acid; D006861:Hydrogen Peroxide; D005954:Glucosephosphate Dehydrogenase; D002374:Catalase; D009195:Peroxidase; D013482:Superoxide Dismutase; D005980:Glutathione Reductase