Vessels involved in the venous outflow from glandular mucosa of hamster stomach

• Autorzy: Moskalewski S , Biernacka-Wawrzonek D. , Klimkiewicz J. , Zdun R.
• Języki publikacji: EN

Abstrakty

EN

Blood from the glandular part of hamster gastric mucosa is drained by collecting venules, running from the subepithelial layer towards lamina muscularis mucosae. To visualise vessels involved in the venous outflow, hamsters were exposed to atropine and subjected to intravital ligation of portal vein, causing strong hyperaemia. Distribution of vessels and their connections were studied a) in translucent, flat preparations of the glandular stomach, b) in thick sections of glandular mucosa cleared in the mineral oil, and c) in semi-thin plastic or paraffin sections. Collecting venules were drained by single vessels running parallel to the lamina muscularis mucosae (paramuscular venules), which, in turn, joined submucosal veins through openings in muscularis mucosae. Moreover, some collecting and paramuscular venules discharged into venules belonging to vascular triples composed of two venules and arteriole. The triplets were also parallel to muscularis mucosae. Triplets did not form connections with submucosal veins but passed on the abluminal surface of muscularis mucosae. Thus, some structural elements involved in venous outflow from glandular gastric mucosa differ from those in rats, in which vascular triplets were absent and all collecting venules drained into single paramuscular vessels. Contraction/relaxation of muscularis mucosae may regulate the amount of blood present in the venous system of the mucosa and the diameter of venules. Rhythmical changes of the latter could cause changes in intramucosal pressure, affecting movement of tissue fluid in the mucosa and thus the function of gastric cells.

Słowa kluczowe

EN

stomach mucosa; hamster; stomach; glandular mucosa; venous outflow system; hyperemia; collecting venule; paramuscular venule; gastric mucosa; vessel

• Wydawca: -
• Czasopismo: Folia Morphologica
• Rocznik: 2002
• Tom: 61
• Numer: 2
• Strony: 81-87
• Opis fizyczny: p.81-87,fig.,ref.

Twórcy

autor

Moskalewski S

• Medical University of Warsaw, Chalubinskiego 5, 02-004 Warsaw, Poland

autor

Biernacka-Wawrzonek D.

autor

Klimkiewicz J.

autor

Zdun R.

Bibliografia

• 1. Aharinejad S, Lametschwandtner A, Franz P, Fibras W (1991) The vascularization of the digestive tract studied by scanning electron microscopy with special emphasis on the teeth, oesophagus, stomach, small and large intestine, pancreas and liver. Scan Microsc, 5: 811–849.
• 2. Ayala E, Enghardt MH, Horton M (1997) Cost effective, environmentally safe tissue processing method with paraffin oil. J Histotechnol, 20: 133–137.
• 3. Campra JL, Reynolds TB (1988) The hepatic circulation. In: Arias IM, Jakoby WB, Popper H, Schachter D, Shafritz DA (eds.) The Liver. Biology and Pathobiology Raven Press, New York, pp. 911–930.
• 4. Cliff WJ (1976) Blood Vessels. Cambridge University Press.
• 5. Gannon B, Browning J, O’Brien P (1982) The microvascular architecture of the glandular mucosa of rat stomach. J Anat, 135: 667–683.
• 6. Imada M, Tatsumi H, Fujita H (1987) Scanning electron microscopy of vascular architecture in the gastric mucosa of the golden hamster. Cell Tissue Res, 250: 287–293.
• 7. Li P-L (1940) Adaptation in veins to increased intravenous pressure with special reference to the portal system and inferior vena cava. J Pathol Bact, 50: 121–136.
• 8. Michel G (1961) Die Venen der Bauch- und Beckenhähle, einschliesslich der Pfortader, und der Beckengliedmasse des Syr. Goldhamsters (Mesocricetus auratus W.). Anat Anz, 110: 7–17.
• 9. Moskalewski S, Biernacka-Wawrzonek D, Klimkiewicz J, Zdun D (1999) Veins with saccular dilatations in gastric mucosa of the rat. Folia Morphol, 58: 21–26.
• 10. Moskalewski S, Biernacka-Wawrzonek D, Klimkiewicz J, Zdun D (2002) Collecting and paramuscular venules in glandular mucosa of rat stomach. Ann Anat, 184: 173–179.
• 11. Robert A (1971) Proposed terminology for the anatomy of the rat stomach. Gastroenterol, 60: 344–345.
• 12. Schwarze E, Michel G (1957) Die arterielle Blutversorgung des-Magen-Darm-Kanals, seiner Anhangsdrüsen und der Milz beim Syr. Goldhamster (Mesocricetus auratus W.) Anat Anz, 104: 419–430.
• 13. Seelig LL, Schlusselberg DS, Smith WK, Woodward DJ (1985) Mucosal nerves and smooth muscle relationship with gastric glands of the opossum: an ultrastructural and three-dimensional reconstruction study. Am J Anat, 174: 15–26.
• 14. Spurr AR (1969) A low viscosity epoxy resin embedding medium for electron microscopy. J Ultrastruct Res, 26: 31–43.
• 15. Stockbrugger RW (1988) Clinical significance of M 1 receptor antagonists. Pharmacology, 37: (Suppl 1), 54–63.
• 16. Synnerstad I, Ekblad E, Sundler F, Holm L (1998) Gastric mucosal smooth muscles may explain oscillations in glandular pressure: role of vasoactive intestinal peptide. Gastroenterol, 114: 284–294.
• 17. Ts’ao C.H, Glagov S, Kelsey BF (1970) Special structural features of the rat portal vein. Anat Rec, 166: 529–540.
• 18. Walder DN (1953) The muscularis mucosae of the human stomach. J Physiol, 120: 365–372.