title: Effects of bacterial lipopolysachharide on peripheral leukocytes in the American alligator (Alligator mississippiensis).
abstract: Alligators were injected intraperitoneally with four different doses (10, 1.0, 0.1, and 0.01 mg/kg body weight) of a mixture of bacterial lipopolysaccharides (LPS) derived from three different types of bacteria (Escherichia coli, Pseudomonas aeruginosa, and Klebsiella pneumoniae). Injection of the alligators with the LPS mixture resulted in a dose- and time-dependent increase in total peripheral leukocytes Lymphocytes increased at days 3 and 4 post-injection, and decreased back to baseline levels at day 7 for all doses. Alligators that were not treated, and those injected with pyrogen-free saline, did not exhibit statistically significant changes in total leukocytes during the course of the study. Injection of alligators with 0.5 mg LPS/kg body weight derived from one of three bacterial species revealed that the leukocyte increases observed were not statistically different for all three types of LPS. The animals displayed the same increases in total counts and the levels of all circulating leukocyte types were not different between animals treated with a combination of LPS from all three bacterial species.
authors.affiliation: Department of Chemistry, McNeese State University, Box 90455, Lake Charles, LA 70609, USA. mmerchan@mcneese.edu
authors.forename: Mark
authors.initials: M
authors.lastname: Merchant
authors.forename: Kaili
authors.initials: K
authors.lastname: Mills
authors.forename: Stetson
authors.initials: S
authors.lastname: Williams
authors.forename: Faren
authors.initials: F
authors.lastname: Kleckley
authors.forename: Amanda
authors.initials: A
authors.lastname: Sims
authors.forename: Ruth M
authors.initials: RM
authors.lastname: Elsey
authors.forename: Jennifer
authors.initials: J
authors.lastname: Bushnell
mesh_terms: D000489:Alligators and Crocodiles / Q000097:blood / Q000276:immunology*; D000818:Animals; D007700:Kinetics; D007958:Leukocyte Count / Q000662:veterinary; D007963:Leukocytes, Mononuclear / Q000187:drug effects / Q000276:immunology*; D008070:Lipopolysaccharides / Q000276:immunology / Q000494:pharmacology*
chemical_list: D008070:Lipopolysaccharides