Heliobacter pylori is a bacterium that affects the stomach. What effect does it have? on this organ?

Question

BlackTom AI · Accepted Answer

To address the question, we first restate the problem: what effect does Helicobacter pylori have on the stomach?
Option 1 suggests inhibition of normal GI movements leading to severe constipation. This is not characteristic of H. pylori infection; it primarily affects the gastric mucosa and has little to do with peristaltic or segmentation activity causing constipation, so this option misattributes a motility disorder to the bacterium.
Option 2 claims excessive stimulation of the stomach’s muscular layers causing dumping syndrome due to high intragastric pressure and pyloric dysfunction. Dumping syndrome is typically related to rapid gastric emptying after meals, not a direct result of H. pylori–driven pathology, and the described mechanism does not align with how H. pylori operates in the stomach.
Option 3 posits a symbiotic release of vital gastric digestive enzymes for fats. This is inaccurate because H. pylori is a pathogenic organism associated with mucosal inflammation; it does not symbiotically release enzymes for lipid digestion. The bacterium’s presence does not enhance fat digestion through enzyme secretion.
Option 4 describes perforation of the mucous layer, exposing the stomach wall to the acidic environment and leading to gastritis and gastric ulcers. This aligns with the well-established pathogenic mechanism of H. pylori, which colonizes the mucous layer and damages the protective mucous barrier, promoting gastritis and peptic ulcers through inflammation and mucosal injury; this is a core feature of infection.
In evaluating each choice, it becomes clear that the first three options mischaracterize the primary effects of H. pylori—either by misattributing motility changes, incorrect syndrome association, or nonexistent symbiotic enzyme activity—whereas the fourth option accurately reflects the mucosal damage and ulcerative outcomes associated with the bacterium. The reasoning aligns with clinical knowledge that H. pylori infection predisposes to gastritis and peptic ulcers via mucosal injury and inflammatory processes.

Heliobacter pylori is a bacterium that affects the stomach. What effect does it have? on this organ?单项选择题

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