Simplified method for recovery and PCR detection of Cryptosporidium DNA from bovine feces.
An assay to identify Cryptosporidium DNA in bovine feces has been developed emphasizing standardization of sample preparation and simplification of the DNA recovery process for PCR amplification and DNA hybridization detection. The Cryptosporidium DNA recovery-PCR detection procedure (CR-PCR) can recover DNA suitable for PCR amplification without using or generating hazardous chemicals or wastes. In comparisons with a commercial enzyme-linked immunoassay (Color Vue-Cryptosporidium; Seradyn, Indianapolis, Ind.), the CR-PCR could detect 10(3) to 10(4) times fewer purified oocysts diluted in solution (water or buffered saline) and 10(2) times fewer oocysts from diarrheic feces and showed earlier detectability from solid, nondiarrheic feces in an experimental infection. This assay may prove useful for detecting Cryptosporidium oocysts in feces and in clarifying the role of livestock in waterborne outbreaks of cryptosporidiosis.
Leng
X
X
Department of Diagnostic Medicine-Pathology, College of Veterinary Medicine, Kansas State University, Manhattan 66506-5606, USA.
Mosier
D A
DA
Oberst
R D
RD
D000818:Animals; D001483:Base Sequence; D002417:Cattle; D002418:Cattle Diseases / Q000175:diagnosis / Q000469:parasitology; D003457:Cryptosporidiosis / Q000453:epidemiology / Q000635:transmission / Q000662:veterinary; D003458:Cryptosporidium / Q000235:genetics* / Q000302:isolation & purification*; D017931:DNA Primers / Q000235:genetics; D016054:DNA, Protozoan / Q000235:genetics* / Q000302:isolation & purification*; D004196:Disease Outbreaks; D005243:Feces / Q000469:parasitology*; D006801:Humans; D008969:Molecular Sequence Data; D016133:Polymerase Chain Reaction / Q000379:methods*; D014867:Water / Q000469:parasitology
D017931:DNA Primers; D016054:DNA, Protozoan; D014867:Water