title: [Studies of Mycoplasma mastitis in cattle. 5. Studies of udder pathogenicity of Mycoplasma and Acholeplasma strains of different origins].
abstract: Isolated acholeplasma laidlawii strains exhibited highly differentiated behaviours regarding their udder pathogenicity. Twelve of 16 tested strains were pathogenic to udder. Symptoms of acute udder inflammation were caused by all ten A. laidlawii strains isolated from differentiated material of calf, but by only two of six strains isolated from differentiated material of cattle. Intracisternal instillation of both strains from milk and one strain each from udder skin or cervical mucus caused merely temporary disorders of secretion. Ultrasonic extracts of A. laidlawii strains, some of them additionally heated, were intracisternally applied, as well. Udder irritation was caused only by those acholeplasma strains which were udder-patha was assumed to be attributable to a toxin of the polysaccharide type. Pathogenicity to udder was recorded also from one M. alkalescens strain isolated from a nose swab taken of cattle as well as from two A. granularum strains isolated from calf lungs.
mesh_terms: D000128:Acholeplasma laidlawii / Q000472:pathogenicity*; D000818:Animals; D002417:Cattle; D005260:Female; D007774:Lactation; D008321:Mammary Glands, Animal / Q000378:metabolism; D008414:Mastitis, Bovine / Q000378:metabolism / Q000382:microbiology*; D008892:Milk / Q000378:metabolism; D009174:Mycoplasma / Q000472:pathogenicity; D009175:Mycoplasma Infections / Q000378:metabolism / Q000382:microbiology / Q000662:veterinary*; D013045:Species Specificity; D014774:Virulence
vernacular_title: Untersuchungen zur Mykoplasmenmastitis des Rindes. 5. Mitteilung: Untersuchungen zur Euterpathogenität von Mykoplasmen- und Acholeplasmenstämmen verschiedener Herkunft.