STUDIES ON EXPERIMENTAL MYCOPLASMOSIS IN CHICKENS : II. PATHOLOGICAL FINDINGS OF CHICKENS INOCULATED WITH MYCOPLASMA GALLISEPTICUM (STRAIN S<SUB>6</SUB>)BY THE AIR-SAC AND INTRAVENOUS ROUTES
نویسندگان
چکیده
منابع مشابه
Avian mycoplasmosis (Mycoplasma gallisepticum).
Mycoplasma gallisepticum is the most economically significant mycoplasma pathogen of poultry, and has a world-wide distribution. In common with other mycoplasmas, M. gallisepticum is minute in size with minimal genetic information and with a total lack of a bacterial cell wall. These properties are reflected in a high degree of interdependence between M. gallisepticum and the host animal, and i...
متن کاملChemokine and cytokine gene expression profiles in chickens inoculated with Mycoplasma gallisepticum strains Rlow or GT5.
Mycoplasma gallisepticum infection in chickens leads to tracheitis, airsacculitis, poor feed conversion and reduced egg production, resulting in considerable economic hardship on the poultry industry. The chemokines and cytokines responsible for recruitment, activation and proliferation of leukocytes in affected tissues have not been described. In the current study, chemokine and cytokine gene ...
متن کاملMycoplasma gallisepticum: Influence of cell invasiveness on the outcome of experimental infection in chickens.
Recently we have shown that a low (R(low)) and a high laboratory passage (R(high)) of the poultry pathogen Mycoplasma gallisepticum prototype strain R differ markedly in their capability to invade non-phagocytic eukaryotic cells. In the present study the infection traits of these two mycoplasma passages were compared in an in vivo setting. After aerosol inoculation of chickens, M. gallisepticum...
متن کاملIsolation and Molecular Characterization of Mycoplasma gallisepticum and Mycoplasma synoviae in Chickens in Sudan
The current study described the isolation and molecular detection of Mycoplasma gallisepticum (Mg) and Mycoplasma synoviae from tracheal swabs of diseased birds showing signs of respiratory distress in selected commercial (layer and broiler) farms and from yolk and an open air of pens of vaccinated breeder flocks in Sudan. A number of 45 Mycoplasma isolates were recovered from chickens in Khart...
متن کاملCorrelates of immune protection in chickens vaccinated with Mycoplasma gallisepticum strain GT5 following challenge with pathogenic M. gallisepticum strain R(low).
Colonization of the avian respiratory tract with Mycoplasma gallisepticum results in a profound inflammatory response in the trachea, air sacs, conjunctiva, and lungs. A live attenuated M. gallisepticum vaccine strain, GT5, was previously shown to be protective in chickens upon challenge; however, the mechanisms by which this vaccine and others confer protection remain largely unknown. The curr...
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ژورنال
عنوان ژورنال: The Japanese Journal of Veterinary Science
سال: 1973
ISSN: 0021-5295,1881-1442
DOI: 10.1292/jvms1939.35.487