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Effects of chronic NSAIDs on gastric mucosal injury related to mucosal prostanoids, and plasma drug concentrations in human volunteers

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Abstract

The relationship between endoscopically observed gastric mucosal damage, elicited following repeated oral intake for 7 d of four NSAIDs, to theie effects on antral and fundic production of PGE2, 6-keto-PGF1α and TxB2 (assayed by GC-MS), mucosal histology and plasma concentration profiles was studied in 40 normal males. Subjects received azapropazone (APZ) 600 mg b.i.d., indomethacin (IND) 50 mg t.i.d., naproxen (NAP) 500 mg b.i.d., piroxicam (PIR) 20 mg qq.d., or one placebo capsude t.i.d (N=8/group). Plasma NSAIDs (HPLC) levelled at 7 d. Mucosal damage occurred in the antrum region with IND and NAP. APZ and PIR exhibited no differences compared to placebo. NAP and IND reduced all three prostanoids in the antrum while APZ and PIR were ineffective. Fundic PGE2 was reduced by IND, NAP and PIR; APZ had no effects. Thus, mucosal damage relates to effects on prostanoid production in the antrum but not in the fundus.

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Authors and Affiliations

  1. Department of Biomedical Sciences, McMaster University Faculty of Health Sciences, L8N 3Z5, Hamilton, Ontario, Canada

    K. D. Rainsford, D. M. Johnson & P. I. Stetsko

  2. Department of Medicine (Division of Gastroenterology), McMaster University Faculty of Health Sciences, L8N 3Z5, Hamilton, Ontario, Canada

    C. James, B. J. Salena & R. H. Hunt

  3. Department of Pathology, McMaster University Faculty of Health Sciences, L8N 3Z5, Hamilton, Ontario, Canada

    K. D. Rainsford & R. E. Hill

Authors
  1. K. D. Rainsford
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  2. C. James
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  3. D. M. Johnson
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  4. P. I. Stetsko
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  5. R. E. Hill
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  6. B. J. Salena
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  7. R. H. Hunt
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Rainsford, K.D., James, C., Johnson, D.M. et al. Effects of chronic NSAIDs on gastric mucosal injury related to mucosal prostanoids, and plasma drug concentrations in human volunteers. Agents and Actions 39 (Suppl 1), C21–C23 (1993). https://doi.org/10.1007/BF01972708

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