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  • Title: Prevalence and clinical characterization of gastric Helicobacter species infection of dogs and cats in Korea.
    Author: Hwang CY, Han HR, Youn HY.
    Journal: J Vet Sci; 2002 Jun; 3(2):123-33. PubMed ID: 12441682.
    Abstract:
    This study was carried out to evaluate the prevalence and clinical characterizations of gastric Helicobacter spp. infection of dogs and cats in Korea. The prevalence of Helicobacter spp. infection of dogs and cats determined by urease test was 78.4% and 64%, respectively, although Helicobacter genus-specific PCR assay showed that it was 82.3% and 84%. Urease mapping results based on urease test showed that total positive rate of tested tissues from clinically abnormal dogs was significantly higher than that from clinically normal dogs (p=0.0018; Odds ratio = 6.118; 95% Confidence Interval = 1.96-19.103). These findings were consistent with the results of Helicobacter genus-specific PCR assay which showed that positive rate of the fundus (100%) and the antrum (100%) of clinically abnormal dogs was significantly higher than that of same gastric regions of clinically normal dogs (77.5 and 67.5% respectively). In comparison of gastric regions between clinically normal dogs and abnormal dogs, positive rate of urease test for the fundus (100%) and body (90.9%) in clinically abnormal dogs was significantly higher than that of abnormal dogs (72.5% and 57.5% respectively; p<0.05). The results of urease mapping in dogs and cats also indicated that Helicobacter colonization in the fundus was more dense compared with the density in the body and antrum. In Helicobacter species-specific PCR assay for dogs, 32 of 42 fundic tissues (76.2%) were positive for H. heilmannii and two (4.8%) were positive for H. felis. In cats, 18 of 21 fundic tissues (85.7%) were positive for H. heilmannii and 2 (9.5%) were positive for H. felis. Gastritis scores of fundic tissues from clinically abnormal infected dogs were similar to that from noninfected dogs and evidence of upregulation of IL-1beta, IL-8, and TNF-alpha mRNA was not detected in gastric fundic tissues from clinically abnormal infected dogs. This study suggested that Helicobacter spp. infection in domestic dogs including private owned pet dogs and cats is highly prevalent usually with no clinical sign but high density of colonization can be related to gastrointestinal signs
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