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Phosphodiesterase 9 (PDE9) regulates bovine tracheal smooth muscle relaxation.

ABSTRACT: The present study was designed to clarify phosphodiesterase 9 (PDE9) expression in bovine tracheal smooth muscle tissue, and to elucidate that PDE9 may contribute to the regulation of airway relaxation. PDE9 mRNA expression was detected in bovine tracheal smooth muscle. Sodium nitroprusside (an NO donor) and BAY 73-6691 (a selective PDE9 inhibitor) reduced high K+- and carbachol-induced contraction. BAY 73-6691 relaxed tracheal tissue on the same level with vardenafil (a selective PDE5 inhibitor). These results support our hypothesis that PDE9 plays functional role in the tracheal smooth muscle relaxation. PDE9 inhibitors are expected to be a novel target of the add-on treatment of airway hyperresponsiveness.

SUBMITTER: Tajima T

PROVIDER: S-EPMC5880833 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature

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Phosphodiesterase 9 (PDE9) regulates bovine tracheal smooth muscle relaxation.

Tajima Tsuyoshi T Shinoda Tamami T Urakawa Norimoto N Shimizu Kazumasa K Kaneda Takeharu T

The Journal of veterinary medical science 20180130 3

The present study was designed to clarify phosphodiesterase 9 (PDE9) expression in bovine tracheal smooth muscle tissue, and to elucidate that PDE9 may contribute to the regulation of airway relaxation. PDE9 mRNA expression was detected in bovine tracheal smooth muscle. Sodium nitroprusside (an NO donor) and BAY 73-6691 (a selective PDE9 inhibitor) reduced high K<sup>+</sup>- and carbachol-induced contraction. BAY 73-6691 relaxed tracheal tissue on the same level with vardenafil (a selective PDE ...[more]

PMID: 29386424

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