Linked Life Data

6678841

Source:http://linkedlifedata.com/resource/pubmed/id/6678841

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1984-10-1
pubmed:abstractText
The microvasculature of the rat forestomach was compared with that of the glandular stomach using scanning electron microscopy of vascular corrosion casts and conventional transmission electron microscopy. The forestomach stratified mucosa is relatively poorly vascularized, having a simple 2 dimensional array of continuous capillaries located subepithelially. This contrasts with the extensive mucosal microvascular network of the glandular stomach, where fenestrated capillaries are closer to adjacent cells. pH measurements were taken at the mid-forestomach luminal surface and midfundic luminal surface of the glandular stomach. The H+ concentration was 200 x lower at the forestomach luminal surface. There was always food within the stomach. The pH of the food bolus, which extended throughout the stomach, reflected the pH of the adjacent mucosa. Because of their microvascular differences, the portal transport of HCO3- purported to protect the glandular mucosa from luminal acidity cannot operate at the forestomach mucosa. We speculate that the low forestomach acidity results from the buffering action of the food bolus and that the anatomically distinct dividing ridge restricts direct access of fundic secretions to the forestomach mucosa.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:issn
0167-6865
pubmed:author
pubmed:issnType
Print
pubmed:volume
2
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
109-18
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1983
pubmed:articleTitle
The microvasculature and gastric luminal pH of the forestomach of the rat: a comparison with the glandular stomach.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't