Effect of starvation on endocrine cells in the rat stomach.
The influence of food deprivation on gastric G- and D-cells and on parietal cells was studied in the rat. In fed controls and groups of rats fasted for 12 and 96 h G-, D- and parietal cell densities, somatostatin and gastrin concentration in antral and fundic specimens and serum gastrin were compared. Gastrin in antral mucosa, serum gastrin, G-cell density as well as antral D-cell density decreased in long-term fasted rats by 52%, 90%, 58% and 42%, respectively. Fundic D-cell density remained unchanged. After 96 h starvation somatostatin concentration slightly increased in antral mucosa (+35%; P less than 0.05), but decreased in fundic mucosa (-40%; P less than 0.05). Parietal cell density was not influenced by prolonged fasting. These findings demonstrate that changes in D-cell morphology and mucosal somatostatin content are not parallel and that the rat gastric D-cell is less dependent on food in the gastric lumen than the G-cell. The unaltered fundic D-cell density reflects the functional activity of gastric D-cell which has also been shown to be independent of the presence or absence of food.
Schwarting
H
H
Koop
H
H
Gellert
G
G
Arnold
R
R
D000818:Animals; D001835:Body Weight; D005748:Gastric Fundus / Q000473:pathology; D005753:Gastric Mucosa / Q000473:pathology*; D005755:Gastrins / Q000032:analysis* / Q000097:blood; D008297:Male; D009929:Organ Size; D011706:Pyloric Antrum / Q000473:pathology; D051381:Rats; D011919:Rats, Inbred Strains; D013004:Somatostatin / Q000032:analysis*; D013217:Starvation
D005755:Gastrins; D013004:Somatostatin