PSL301H1 Lecture Notes - Lecture 33: Peptic Ulcer, Stomach Cancer, Vagus Nerve
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PSL301H1 Full Course Notes
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Vagus should also pul down to increase pepsinogen to chief cells. Peptic ulcers are just ones found in the gi tract either as a gastric or duodenal. Dr. warren found that about 60% of his patients with ulcers had bacteria colonizing their stomachs. Maybe they are caused by presence of bacteria (and all physicians thought it was because of stress) and dr. marshall cultured bacteria from dr. warren"s. But everytime they tried to do this in another animal model these patients experiments would fail. Without ethics board, dr. marshall drank the culture of bacteria, and beforehand, he had an endoscopy done to make sure he didn"t have any bacteria. He drank the bacteria, got sick, and got a second endoscopy, showing he had severe gastritis which is an early stage of gastric ulcers. Causes of peptic ulcers must have taken care of it it didn"t work in other models. Decline in production of mucus due to decline in production of.
