High prevalence of cagA- and babA2-positive Helicobacter pylori clinical isolates in Taiwan.
Two virulence markers, cagA and babA2, were characterized by PCR in 101 Helicobacter pylori isolates from a population in Taiwan. cagA was detected in 99% of the isolates, while babA2 was present in all of the isolates. Base deletions and substitutions at the forward babA2 primer annealing sites were found. Given their high prevalence, cagA and babA2 cannot be useful markers for predicting the high-risk patients of H. pylori infection in Taiwan.
D018829:Adhesins, Bacterial; D000942:Antigens, Bacterial; D001426:Bacterial Proteins / Q000235:genetics*; D001483:Base Sequence; D002352:Carrier Proteins / Q000235:genetics*; D005787:Gene Frequency; D016481:Helicobacter Infections / Q000453:epidemiology / Q000382:microbiology*; D016480:Helicobacter pylori / Q000235:genetics* / Q000302:isolation & purification / Q000472:pathogenicity; D006801:Humans; D008969:Molecular Sequence Data; D015995:Prevalence; D012689:Sequence Homology, Nucleic Acid; D013624:Taiwan / Q000453:epidemiology; D014774:Virulence / Q000235:genetics
D018829:Adhesins, Bacterial; D000942:Antigens, Bacterial; C400429:BabA protein, Helicobacter pylori; D001426:Bacterial Proteins; D002352:Carrier Proteins; C080866:cagA protein, Helicobacter pylori