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Sharif NA, Katoli P, Kelly CR, Li L, Xu S, Wang Y, Klekar L, Earnest D, Yacoub S, Hamilton G, Jacobson N, Shepard AR, Ellis D. Trabecular Meshwork Bradykinin Receptors: mRNA Levels, Immunohistochemical Visualization, Signaling Processes Pharmacology, and Linkage to IOP Reduction. J Ocul Pharmacol Ther 2014; 30:21-34. [DOI: 10.1089/jop.2013.0105] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Affiliation(s)
- Najam A. Sharif
- Pharmaceutical Research, Alcon Research, Ltd. (A Novartis Company), Fort Worth, Texas
| | - Parvaneh Katoli
- Pharmaceutical Research, Alcon Research, Ltd. (A Novartis Company), Fort Worth, Texas
| | - Curtis R. Kelly
- Pharmaceutical Research, Alcon Research, Ltd. (A Novartis Company), Fort Worth, Texas
| | - Linya Li
- Pharmaceutical Research, Alcon Research, Ltd. (A Novartis Company), Fort Worth, Texas
| | - Shouxi Xu
- Pharmaceutical Research, Alcon Research, Ltd. (A Novartis Company), Fort Worth, Texas
| | - Yu Wang
- Pharmaceutical Research, Alcon Research, Ltd. (A Novartis Company), Fort Worth, Texas
| | - Laura Klekar
- Pharmaceutical Research, Alcon Research, Ltd. (A Novartis Company), Fort Worth, Texas
| | - David Earnest
- Pharmaceutical Research, Alcon Research, Ltd. (A Novartis Company), Fort Worth, Texas
| | - Shenouda Yacoub
- Pharmaceutical Research, Alcon Research, Ltd. (A Novartis Company), Fort Worth, Texas
| | - Gwenette Hamilton
- Pharmaceutical Research, Alcon Research, Ltd. (A Novartis Company), Fort Worth, Texas
| | - Nasreen Jacobson
- Pharmaceutical Research, Alcon Research, Ltd. (A Novartis Company), Fort Worth, Texas
| | - Allan R. Shepard
- Pharmaceutical Research, Alcon Research, Ltd. (A Novartis Company), Fort Worth, Texas
| | - Dorette Ellis
- Department of Pharmaceutical Sciences, University of North Texas Systems College of Pharmacy, Fort Worth, Texas
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Dodson AM, Rhoden KJ. Bradykinin increases Na(+)-K(+) pump activity in cultured guinea-pig tracheal smooth muscle cells. Br J Pharmacol 2001; 133:1339-45. [PMID: 11498520 PMCID: PMC1621150 DOI: 10.1038/sj.bjp.0704198] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
1. The effect of bradykinin on the Na+-K+ pump of airway smooth muscle was investigated by measuring ouabain-sensitive (86)Rb(+) uptake in cultured guinea-pig tracheal smooth muscle cells. 2. Bradykinin induced a concentration-dependent increase in ouabain-sensitive (86)Rb(+) uptake, with an EC(50) of 3 nM (pD(2) = 8.50+/-0.10). Stimulation was not affected by indomethacin (1 microM) suggesting that it is not mediated by cycloxygenase products of arachidonic acid. 3. The B(1) receptor agonists Lys-des-Arg(9)-bradykinin and des-Arg(9)-bradykinin had no effect on ouabain-sensitive (86)Rb(+) uptake. In contrast, the B(1) and B(2) receptor agonist Lys-bradykinin induced a concentration-dependent increase in ouabain-sensitive (86)Rb(+) uptake with an EC(50) of 6 nM (pD(2) = 8.21 +/- 0.20). 4. The B(1) receptor antagonist des-Arg(10)-HOE 140 (1 microM) had no effect on bradykinin-stimulated ouabain-sensitive (86)Rb(+) uptake. The B(2) receptor antagonists HOE 140 and WIN 64338 antagonized bradykinin-stimulated ouabain-sensitive (86)Rb(+) uptake with pK(B) values (-log M) of 8.20 +/- 0.08 and 8.11 +/- 0.20 respectively. 5. Reducing extracellular Na+ from 146 mM to 11 mM caused a 53.5% decrease in basal ouabain-sensitive (86)Rb+ uptake and abolished bradykinin-induced uptake. Two inhibitors of the Na(+)-H(+) exchanger, methylisobutyl-amiloride (MIA; 1 - 100 microM) and ethylisopropyl-amiloride (EIPA; 0.1 - 10 microM), inhibited bradykinin-stimulated ouabain-sensitive (86)Rb(+) uptake without affecting basal uptake. 6. These results suggest that bradykinin increases Na+-K+ pump activity of guinea-pig tracheal smooth muscle via stimulation of B(2) receptors and activation of the Na+-H+ exchanger.
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Affiliation(s)
- A M Dodson
- John B. Pierce Laboratory, 290 Congress Avenue, New Haven, Connecticut, CT 06519, USA
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