Pulmonary Pharmacology of DT-TX 30 SE, a Potent Selective Combined Thromboxane Synthetase Inhibitor and Receptor Antagonist, in Guinea Pigs.
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- Meade Christopher J.
- Department of Biological Research, Boehringer Ingelheim KG
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- Muacevic Gojko
- Department of Biological Research, Boehringer Ingelheim KG
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- Ward Paul
- Department of Clinical Pharmacology, Royal Postgraduate Medical School
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- Soyka Rainer
- Department of Chemistry, Dr. Karl Thomae GmbH
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Abstract
A novel chemical compound, DT-TX 30 SE (E-6-(4-(2-(4-chlorobenzenesulphonylamino)ethyl)phenyl)-6-(3-pyridyl)-hex-5-enoic acid), was studied in various models of guinea pig pulmonary function. The compound was a potent inhibitor (ED50 0.019 mg/kg, i.v.) of bronchospasm induced by the thromboxane receptor agonist U-46619, indicating thromboxane receptor antagonism. At even lower doses (ED50 0.0036 mg/kg, i.v.), it blocked arachidonic acid-induced bronchospasm. Interpretation of the latter results as evidence for additional thromboxane synthetase inhibitory activity was supported by the inhibition of arachidonic acid or bradykinin-induced thromboxane B2 production in an isolated lung preparation, although prostaglandin E2 and prostaglandin 6-oxo-F1α production measured at the same time were not inhibited. The potency of DT-TX 30 SE was compared with thromboxane receptor antagonists and synthetase inhibitors described in the literature. As a receptor antagonist, DT-TX 30 SE was significantly more potent than BM 13505 and BM 13177 (assessed by antagonism of U-46619-induced bronchospasm), but less potent than SQ 29548, while as a thromboxane synthetase inhibitor, it was significantly more potent than OKY 046 and UK 37248 as assessed by antagonism of arachidonic acid-induced bronchospasm or (OKY 046) inhibition of thromboxane production in isolated lung. The compound was active by the oral route as shown by its ability, at 10 mg/kg, p.o., to significantly reduce the immediate allergic response of sensitized guinea pigs to an ovalbumin aerosol.
Journal
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- The Japanese Journal of Pharmacology
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The Japanese Journal of Pharmacology 71 (2), 119-127, 1996
The Japanese Pharmacological Society
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Details 詳細情報について
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- CRID
- 1390282679261192192
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- NII Article ID
- 10008188544
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- NII Book ID
- AA00691188
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- COI
- 1:CAS:528:DyaK28XjvVWkurc%3D
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- ISSN
- 13473506
- 00215198
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- PubMed
- 8835638
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- Text Lang
- en
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- Data Source
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- JaLC
- Crossref
- PubMed
- CiNii Articles
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- Abstract License Flag
- Disallowed