Refinar búsqueda
Resultados 61-70 de 556
Increased numbers of duodenal mucosal mast cells in turkeys inoculated with hemorrhagic enteritis virus.
1992
Opengart K. | Eyre P. | Domermuth C.H.
The relation between average duodenal mast cell count, duodenal mucosal mast cell numbers, duodenal connective tissue mast cell numbers, circulating basophil numbers, heterophil-to-lymphocyte ratio, and lesion score were studied to gain an understanding of the events that may lead to intestinal lesion formation associated with hemorrhagic enteritis virus (HEV) infection. Changes in vascular permeability in the duodenum in birds inoculated with HEV were examined, using colloidal carbon and ferritin as vascular markers. Turkeys inoculated with HEV had significantly (P < 0.05) higher duodenal mast cell counts than did noninfected controls. Birds inoculated with HEV had significantly (P < 0.05) more mucosal mast cells than did phosphate-buffered saline solution-inoculated birds. Connective tissue mast cell and basophil numbers were unaffected by viral inoculation. Thermal stress did not have significant effect on lesion severity, but did increase number of birds that developed the characteristic intestinal lesions. The heterophil-to-lymphocyte ratio was significantly (P < 0.05) higher in HEV-inoculated birds, compared with phosphate-buffered saline solution-inoculated controls. Increase in vascular permeability was only detected in HEV-inoculated birds with intestinal lesions. Results indicate that mast cells, and the vasoactive mediators contained within mast cells, may be important in the early manifestation of HEV infection. They also provide a possible mechanism through which biochemical and physiologic changes characteristic of HEV infection can occur.
Mostrar más [+] Menos [-]Parthenogenetic development of mouse eggs-(1)-Parthenogenetic activation by ethanol and hyaluronidase treatments.
1992
Lee H.J. | Kang T.Y. | Choi M.C. | Ha D.S.
Laboratory cultivation of blue-green algae for use as a food for Lymnaeids, the intermediate host of Fasciola hepatica.
1992
Lee C.G. | Kim S.K. | Lee C.Y.
Reverse effects of electroacupuncture on xylazine analgesia in goats.
1992
Seo K.M. | Yoon J.H. | Cheong J.T. | Chang K.H. | Nam T.C.
Isolation and morphological characterization of natural killer cell in the Sprague-dawley (SD) rats.
1992
Kang K.S. | Lee Y.S.
Comparison of soluble antigens Leptospira interrogans serovars by SDS-PAGE, crossed immunoelectrophoresis and immunoblotting.
1992
Baik Y.O. | Mah J.S.
Effect of Artemisia Iwayomogi water extract on hepatic injury by carbon tetrachloride in rats - (1) - Effect of serum AST, ALT, LDH activities, lipid content and liver peroxide content.
1992
Kim K.S. | Park J.H.
Spontaneous lingual papillomas in fischer 344 rats.
1992
Kang B.H. | Lim C.H.
Ultrastructure of virus particles in the liver of piglets infected with porcine enterovirus serotype 3.
1992
Shin T.K | Lee C.S. | Huh M.D.
Effect of bilateral stimulation on spinal evoked potentials in dogs Texto completo
1992
Poncelet, Luc | Delauche, A. | Vinals, C. | Balligand, Marc
peer reviewed
Mostrar más [+] Menos [-]