treatment of helicobacter in dog last just as long study

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treatment of helicobacter in dog last just as long study

Postby malernee » Sat Oct 21, 2006 8:37 am

Gastric Function in Dogs with Naturally Acquired Gastric Helicobacter spp. Infection

<<J Vet Intern Med 12[6]:507-515 Nov/Dec'99 Clinical Study 59 Refs
* Kenneth W. Simpson; Dalit Strauss-Ayali; Patrick L. McDonough; Yung-Fu Chang; Beth A. Valentine
* Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853; e-mail: KWS5@cornell.edu

The association of Helicobacter pylori with gastritis, peptic ulcers, and gastric neoplasia has led to fundamental changes in the understanding of gastric disease in humans. The relationship of Helicobacter spp. infection to gastric disease in dogs is unclear. The objective of this study was to determine if Helicobacter infection affects the gastric secretory axis of dogs. Eight Beagle dogs with naturally acquired Helicobacter spp. infection were studied before and after (4 and 29 days) the attempted eradication of Helicobacter spp. with a combination of amoxicillin, metronidazole, and famotidine (AMF). Six specific-pathogen-free, Helicobacter-free Beagle dogs served as controls. The electron microscopic appearance of spiral organisms in infected dogs indicated coinfection with Helicobacter felis- and H bizzozeronii-like organisms. Unstimulated gastric pH and fasting, postprandial, and bombesin-stimulated plasma gastrin were similar in both infected and uninfected dogs, although a trend (P = .09) toward higher meal-stimulated gastrin was observed in infected dogs at 60 minutes. Pentagastrin-stimulated maximal acid output (mmol HCl/kg0.75 /hour) and titratable acidity (mmol HCI/mL) were similar in both infected and uninfected dogs, but gastric pH during maximal acid output was lower (P < .01) in uninfected dogs. Mild gastric inflammation was present in both infected and uninfected dogs. Gastric spiral organisms were undetectable in 6/8 infected dogs 4 days after AMF but had recurred in 8/8 dogs 29 days after AMF. Analysis of gastric DNA with Helicobacter-specific primers indicated persistence of Helicobacter DNA at 4 and 29 days after antibiotic therapy. Acid secretion, plasma gastrin, and mucosal inflammation were not affected by the transient suppression of Helicobacter spp. by AMF. These findings suggest that gastric secretory function in dogs is not markedly perturbed by naturally acquired Helicobacter spp. infection and that treatment with amoxicillin, metronidazole, and famotidine causes suppression rather than eradication of gastric Helicobacter spp. in dogs. [author abstract]
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