Biomaterial Database

Species-specific cloned DNA probes for the identification of Campylobacter hyointestinalis. 1989

C J Gebhart, and G E Ward, and M P Murtaugh

Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Minnesota, St. Paul 55108.

Conventional microbiological methods for isolating and identifying Campylobacter species are laborious, tedious, and subjective. Because of the increasing importance of Campylobacter species in human and animal diseases and the recent emergence of many new species and atypical strains, we are developing chromosomal DNA probes for rapid and simple identification of Campylobacter species, especially those of veterinary importance. We report the cloning and characterization of chromosomal DNA fragments from Campylobacter hyointestinalis, an organism isolated from pigs with proliferative enteritis. To obtain C. hyointestinalis-specific probes, chromosomal DNA fragments from C. hyointestinalis were cloned into plasmid vector pGEM-3Z. Recombinant plasmids were screened for C. hyointestinalis-specific inserts by DNA hybridization, using chromosomal DNA from either C. hyointestinalis or C. fetus which had been 32P labeled. Recombinants which hybridized to C. hyointestinalis, but not C. fetus, DNA were 32P labeled and screened further for sensitivity and specificity. Three probes were identified that were species specific and capable of detecting 10(4) C. hyointestinalis organisms by bacterial spot blotting in 48 h. We anticipate that these probes will be useful for routine species identification and for epidemiological studies.

UI	MeSH Term	Description	Entries
D009693	Nucleic Acid Hybridization	Widely used technique which exploits the ability of complementary sequences in single-stranded DNAs or RNAs to pair with each other to form a double helix. Hybridization can take place between two complimentary DNA sequences, between a single-stranded DNA and a complementary RNA, or between two RNA sequences. The technique is used to detect and isolate specific sequences, measure homology, or define other characteristics of one or both strands. (Kendrew, Encyclopedia of Molecular Biology, 1994, p503)	Genomic Hybridization,Acid Hybridization, Nucleic,Acid Hybridizations, Nucleic,Genomic Hybridizations,Hybridization, Genomic,Hybridization, Nucleic Acid,Hybridizations, Genomic,Hybridizations, Nucleic Acid,Nucleic Acid Hybridizations
D002167	Campylobacter	A genus of bacteria found in the reproductive organs, intestinal tract, and oral cavity of animals and man. Some species are pathogenic.
D002169	Campylobacter Infections	Infections with bacteria of the genus CAMPYLOBACTER.	Campylobacter Infection,Campylobacteriosis,Infections, Campylobacter,Campylobacterioses,Infection, Campylobacter
D004269	DNA, Bacterial	Deoxyribonucleic acid that makes up the genetic material of bacteria.	Bacterial DNA
D004751	Enteritis	Inflammation of any segment of the SMALL INTESTINE.	Enteritides
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D013045	Species Specificity	The restriction of a characteristic behavior, anatomical structure or physical system, such as immune response; metabolic response, or gene or gene variant to the members of one species. It refers to that property which differentiates one species from another but it is also used for phylogenetic levels higher or lower than the species.	Species Specificities,Specificities, Species,Specificity, Species
D013552	Swine	Any of various animals that constitute the family Suidae and comprise stout-bodied, short-legged omnivorous mammals with thick skin, usually covered with coarse bristles, a rather long mobile snout, and small tail. Included are the genera Babyrousa, Phacochoerus (wart hogs), and Sus, the latter containing the domestic pig (see SUS SCROFA).	Phacochoerus,Pigs,Suidae,Warthogs,Wart Hogs,Hog, Wart,Hogs, Wart,Wart Hog
D013553	Swine Diseases	Diseases of domestic swine and of the wild boar of the genus Sus.	Disease, Swine,Diseases, Swine,Swine Disease