TAILIEUCHUNG - Báo cáo khoa học: "Survival of Clostridium perfringens During Simulated Transport and Stability of Some Plasmid-borne Toxin Genes under Aerobic Conditions"

Tuyển tập các báo cáo nghiên cứu về bệnh thú y được đăng trên tạp chí y học General Psychiatry cung cấp cho các bạn kiến thức về ngành y đề tài: Survival of Clostridium perfringens During Simulated Transport and Stability of Some Plasmid-borne Toxin Genes under Aerobic Conditions. | Acta vet. scand. 2005 46 241-247. Survival of Clostridium perfringens During Simulated Transport and Stability of Some Plasmid-borne Toxin Genes under Aerobic Conditions By A. Johansson1 B. E. Engstrom1 J. Frey2 K-E. Johansson1 3 V Bảverud1 1National Veterinary Institute SE-751 89 Uppsala Sweden 2Institute of Veterinary Bacteriology University of Bern Laenggass-Str. 122 CH-3001 Bern Switzerland 3Division of Food Hygiene and Bacteriology Department of Biomedical Sciences and Veterinary Public Health Swedish University of Agricultural Sciences Uppsala Sweden. Johansson A Engstrom BE Frey J Johansson K-E Bâverud V Survival of C. per-fringens during simulated transport and stability of some plasmid-borne toxin genes under aerobic conditions. Acta vet. scand. 2005 46 241-247. - Clostridium perfringens is a pathogen of great concern in veterinary medicine because it causes enteric diseases and different types of toxaemias in domesticated animals. It is important that bacteria in tissue samples which have been collected in the field survive and for the classification of C. perfringens into the correct toxin group it is crucial that plasmid-borne genes are not lost during transportation or in the diagnostic laboratory. The objectives of this study were to investigate the survival of C. perfringens in a simulated transport of field samples and to determine the stability of the plasmid-borne toxin genes cpb1 and etx after storage at room temperature and at 4 C. Stability of the plasmid-borne genes cpb1 and etx of C. perfringens CCUG 2035 and cpb2 from C. per-fringens CIP 106526 JF 2255 and 6 field isolates in aerobic atmosphere was also studied. Survival of C. perfringens was similar in all experiments. The cpb1 and etx genes were detected in all isolates from samples stored either at room temperature or at 4 C for 24-44 h. Repeated aerobic treatment of C. perfringens CCUG 2035 and CIP 106526 did not result in the loss of the plasmid-borne genes cpb1 cpb2 or etx. .

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