Inhibition of Gastric Acid Secretion by Unfractionated and Low Molecular Weight Heparins in the Rat
The majority of patients receiving heparin preparations are at stress, which is a risk factor for the development of gastric erosions. Our aim was to examine the effect of unfractionated heparin (UFH) and low molecular weight heparins (LMWHs) on gastric acid secretion. Gastric acid secretion was ind...
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| Format: | Article |
| Language: | English |
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Wiley
2006-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1100/tsw.2006.42 |
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| author | Omar M.E. Abdel Salam Ayman R. Baiuomy Amany Ameen |
| author_facet | Omar M.E. Abdel Salam Ayman R. Baiuomy Amany Ameen |
| author_sort | Omar M.E. Abdel Salam |
| collection | DOAJ |
| description | The majority of patients receiving heparin preparations are at stress, which is a risk factor for the development of gastric erosions. Our aim was to examine the effect of unfractionated heparin (UFH) and low molecular weight heparins (LMWHs) on gastric acid secretion. Gastric acid secretion was induced in urethane-anesthetized rats by distention of the stomach (2 ml saline for 2 h) in addition to histamine or bethanechol stimulation. Distension-stimulated acid secretion (2 ml for 2 h) was significantly inhibited by intraperitoneal administration of UFH (2000 IU/kg, 19% reduction), enoxaparin (180 or 360 IU/kg, 59.2 and 87.1%, reduction, respectively), nadroparin (1000 or 2000 IU/kg, 36 and 60.7% reduction, respectively), and tinzaparin (3000 IU/kg, 41.3% reduction). All tested heparins also suppressed acid secretion in response to distention and histamine or bethanechol stimulation. Pretreatment with indomethacin did not abolish the gastric inhibitory action of nadroparin. After truncal vagotomy or atropine, nadroparin failed to inhibit acid secretion stimulated by histamine. Ganglionic blockade with guanethidine abolished the gastric inhibitory action of nadroparin or UFH. It is concluded that both UFH and LMWHs administered peripherally inhibit stimulated gastric acid secretion in the rat. This effect of heparins is determined by cholinergic and partly by adrenergic mechanisms. |
| format | Article |
| id | doaj-art-a18366526f314abd908e122de26b4d6e |
| institution | Kabale University |
| issn | 1537-744X |
| language | English |
| publishDate | 2006-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-a18366526f314abd908e122de26b4d6e2025-02-03T06:00:20ZengWileyThe Scientific World Journal1537-744X2006-01-01622123010.1100/tsw.2006.42Inhibition of Gastric Acid Secretion by Unfractionated and Low Molecular Weight Heparins in the RatOmar M.E. Abdel Salam0Ayman R. Baiuomy1Amany Ameen2Department of Pharmacology, National Research Centre, Tahrir St., Dokki, Cairo, EgyptDepartment of Pharmacology, National Research Centre, Tahrir St., Dokki, Cairo, EgyptDepartment of Pharmacology, National Research Centre, Tahrir St., Dokki, Cairo, EgyptThe majority of patients receiving heparin preparations are at stress, which is a risk factor for the development of gastric erosions. Our aim was to examine the effect of unfractionated heparin (UFH) and low molecular weight heparins (LMWHs) on gastric acid secretion. Gastric acid secretion was induced in urethane-anesthetized rats by distention of the stomach (2 ml saline for 2 h) in addition to histamine or bethanechol stimulation. Distension-stimulated acid secretion (2 ml for 2 h) was significantly inhibited by intraperitoneal administration of UFH (2000 IU/kg, 19% reduction), enoxaparin (180 or 360 IU/kg, 59.2 and 87.1%, reduction, respectively), nadroparin (1000 or 2000 IU/kg, 36 and 60.7% reduction, respectively), and tinzaparin (3000 IU/kg, 41.3% reduction). All tested heparins also suppressed acid secretion in response to distention and histamine or bethanechol stimulation. Pretreatment with indomethacin did not abolish the gastric inhibitory action of nadroparin. After truncal vagotomy or atropine, nadroparin failed to inhibit acid secretion stimulated by histamine. Ganglionic blockade with guanethidine abolished the gastric inhibitory action of nadroparin or UFH. It is concluded that both UFH and LMWHs administered peripherally inhibit stimulated gastric acid secretion in the rat. This effect of heparins is determined by cholinergic and partly by adrenergic mechanisms.http://dx.doi.org/10.1100/tsw.2006.42 |
| spellingShingle | Omar M.E. Abdel Salam Ayman R. Baiuomy Amany Ameen Inhibition of Gastric Acid Secretion by Unfractionated and Low Molecular Weight Heparins in the Rat The Scientific World Journal |
| title | Inhibition of Gastric Acid Secretion by Unfractionated and Low Molecular Weight Heparins in the Rat |
| title_full | Inhibition of Gastric Acid Secretion by Unfractionated and Low Molecular Weight Heparins in the Rat |
| title_fullStr | Inhibition of Gastric Acid Secretion by Unfractionated and Low Molecular Weight Heparins in the Rat |
| title_full_unstemmed | Inhibition of Gastric Acid Secretion by Unfractionated and Low Molecular Weight Heparins in the Rat |
| title_short | Inhibition of Gastric Acid Secretion by Unfractionated and Low Molecular Weight Heparins in the Rat |
| title_sort | inhibition of gastric acid secretion by unfractionated and low molecular weight heparins in the rat |
| url | http://dx.doi.org/10.1100/tsw.2006.42 |
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