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Possible role of phosphodiesterase 7A (PDE7A) in skin inflammation was examined using ASB16165, a specific inhibitor for PDE7A. Epicutaneous application of phorbol ester 12-O-tetradecanoylphorbol-13-acetate (TPA) to mouse ear resulted in induction of skin edema, and topical treatment with ASB16165
CONCLUSIONS
The data indicate important roles for phosphodiesterase (PDE) 3, 4, 5, and related cAMP and cGMP pools in the regulation of inner ear fluid homeostasis. Thus, dysfunction of these enzymes might contribute to pathologies of the inner ear.
OBJECTIVE
The mechanisms underlying endolymphatic
BACKGROUND
The occurrence of deteriorating renal function test results along with the attempts at diuresis of anasarca has been described but not named, and no solution other than the standard treatment of related medical conditions such as congestive heart failure (CHF) and reducing or stopping
There is a need for pharmacological agents for the treatment of pulmonary edema associated with the adult respiratory distress syndrome. Therefore, we examined the effects of isozyme-selective cyclic AMP phosphodiesterase (cAMP PDE) inhibitors, as well as aminophylline and dexamethasone, on the
The combination of a tendency to affect otherwise fit and healthy individuals, and a characteristically rapid progression to death within hours of the first symptoms, renders high altitude pulmonary edema (HAPE) a particularly devastating illness in travelers to high altitudes. The alveolar edema
The purpose of the present study was to investigate whether cilostazol, a phosphodiesterase-III inhibitor and antiplatelet drug, would prevent tPA-associated hemorrhagic transformation. Mice subjected to 6-h middle cerebral artery occlusion were treated with delayed tPA alone at 6 h, with combined
We discuss a unique case of sudden sensorineural hearing loss after Cialis (tadalafil) use, a phosphodiesterase 5 (PDE5) inhibitor, and the implication of ipsilateral cochlear hydrops seen on magnetic resonance imaging (MRI). We report a case of a 53-year-old male with unilateral low-frequency
OBJECTIVE
The Cilostazol Stroke Prevention Study II has shown a similar efficacy in stroke prevention but markedly fewer hemorrhagic events with the phosphodiesterase inhibitor cilostazol versus aspirin. The purpose of this study is therefore to investigate how cilostazol affects cerebral
Roflumilast is an inhibitor of phosphodiesterase-4 (PDE4) and can suppress the hydrolysis of cAMP in inflammatory cells, conferring anti-inflammatory effects. This study aimed to investigate the protective effects of roflumilast on hyperoxia-induced acute lung injury (HALI) in a rat model. Male
Pulmonary edema which develops during acute myocardial infarction is generally believed to result solely from pulmonary microvascular hypertension. However, patient with myocardial infarction and pulmonary edema occasionally are found to have normal pulmonary wedge pressure. We report data
OBJECTIVE
Phosphodiesterases (PDEs) negatively regulate the concentrations of cAMP and/or cGMP, which act as downstream second messengers to the prostaglandins. PDE type-4 (PDE4) is selective for cAMP and is found in high concentrations in endothelial, epithelial, and different blood cells. The aim
Recently, we reported that 4-catechol-substituted cis-(+/-)-4a,5,6,7,8,8a-hexa- and cis-(+/-)-4a,5,8,8a-tetrahydro-2H-phthalazin-1-ones show potent inhibition of phosphodiesterase (PDE4) activity, while the corresponding trans racemic mixtures exhibit only weak to moderate activity. To determine the
Aerosolized prostacyclin (PGI(2)) has been suggested for selective pulmonary vasodilation, but its effect rapidly levels off after termination of nebulization. Stabilization of the second-messenger cAMP by phosphodiesterase (PDE) inhibition may offer a new strategy for amplification of the
YM-393059 is a novel phosphodiesterase (PDE) 7A and PDE4 dual inhibitor that inhibits both Th1 [interleukin (IL)-2 and interferon-gamma] and Th2 (IL-4) cytokines in vitro [Yamamoto, S., Sugahara, S., Naito, R., Ichikawa, A., Ikeda, K., Yamada, T., Shimizu, Y., 2006. The effects of a novel