A multiple immunodeficiency, involving antibody- and cell-mediated responses in 10 Chinese Shar-Pei (CSP) dogs is described. Abnormal levels of serum IgM and IgA in most cases, and IgG in fewer cases characterized the immunoglobulin deficiencies. Decreased in vitro proliferative responses of pokeweed mitogen (PWM)-stimulated peripheral blood mononuclear cells (PBMC) were found in nine cases.
View Article and Find Full Text PDFTepoxalin [5-(4-chlorophenyl)-N-hydroxy-(4-methoxyphenyl)-N-methyl-1H- pyrazole-3-propanamide] is a potent inhibitor of sheep seminal vesicle cyclooxygenase (CO) (IC50 = 4.6 microM), rat basophilic leukemia cell (RBL-1) lysate CO (IC50 = 2.85 microM) and CO from intact RBL-1 cells (IC50 = 4.
View Article and Find Full Text PDFGuanine ribonucleosides which have been substituted at the N7 and/or C8 positions have been shown previously to activate natural killer (NK) cells and to act as sparing agents for interleukin-2 (IL-2) in the in vitro generation of lymphokine activated killer (LAK) cells. In this paper we examined a disubstituted guanosine, 7-allyl-8-oxoguanosine (loxoribine), for the ability to activate NK cells and to interact with IL-2 in the generation of LAK cells in vivo. Following iv administration, loxoribine enhanced murine splenic NK activity in a dose-related fashion, with optimal responses occurring at 3 mg/mouse.
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