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Estrone sulfate concentrations as an indicator of fetal demise in horses.
1988
Kasman L.H. | Hughes J.P. | Stabenfeldt G.H. | Starr M.D. | Lasley B.L.
Immune response of cattle to Haemophilus somnus lipid A-protein conjugate vaccine and efficacy in a mouse abortion model.
1992
Inzana T.J. | Todd J.
Immunogenicity of the lipid A component of Haemophilus somnus lipooligosaccharide in cattle and mice was examined after purification, detoxification, and covalent conjugation to a protein carrier. After 2 inoculations, a substantial antibody response was induced in most cattle to lipid A and the protein carrier. To determine whether antibodies to lipid A would be protective, 5 X 10(7) colony-forming units of H somnus strain 649 were administered IV to endotoxin-responsive (C3H/HEN) mice. In one study, 8 of 13 C3H/HEN mice aborted when inoculated. In contrast, abortion did not result when mice were inoculated with the same dose of an isolate of H somnus normally found in the prepuce or with the rough mutant Escherichia coli J5. In addition, endotoxin-nonresponsive (C3H/HeJ) mice were significantly (P = 0.03) more resistant to abortion by strain 649 than were C3H/HeN mice, but inoculated C3H/HeN mice were only slightly more resistant to H somnus abortion, compared with control mice. Although a large antibody response to lipid A was detected, there was no significant difference in the immunized group between mice that aborted and mice that delivered normally. Thus, lipooligosaccharide and other properties of virulent H somnus strains may contribute to abortion in mice.
Mostrar más [+] Menos [-]Distinguishing between ovine abortion and ovine arthritis Chlamydia psittaci isolates with specific monoclonal antibodies.
1986
DeLong W.J. | Magee W.E.
Histopathologic changes in bovine fetuses after repeated reintroduction of a spirochete-like agent into pregnant heifers: association with epizootic bovine abortion.
1987
Osebold J.W. | Osburn B.I. | Spezialetti R. | Bushnell R.B. | Stott J.L.
Reduced progesterone and altered cotyledonary prostaglandin values induced by locoweed (Astragalus lentiginosus) in sheep.
1985
Ellis L.C. | James L.F. | McMullen R.W. | Panter K.E.
