Diabetes is strongly associated with erectile dysfunction, which itself a risk factor for cardiovascular events and mortality. Evidence shows that phosphodiesterase type 5 inhibitor (PDE5I) use in men 2 diabetes mellitus significant reduction all-cause mortality morbidity. Despite the evidence, PDE5Is appear to be underused this male cohort.

Alzheimer’s disease is a memory-related neurodegenerative condition leading to cognitive impairment. Cholinergic deficit, together with other underlying mechanisms, leads the onset and progression of disease. Consequently, acetylcholinesterase inhibitors are used for symptomatic treatment dementia, even if limited efficacy observed. More recently, some specific phosphodiesterase isoforms emerge...

Two subclasses of cyclic guanosine monophosphate (GMP)-specific phosphodiesterases were identified in vascular tissue from several beds. The activity of one subclass (phosphodiesterase IB) was stimulated severalfold by calmodulin and selectively inhibited by the phosphodiesterase inhibitor TCV-3B. The activity of the other subclass (phosphodiesterase IC) was not stimulated by calmodulin and was...

BACKGROUND Phosphodiesterase 7 plays a major role in down-regulation of protein kinase A activity by hydrolyzing cAMP in many cell types. This cyclic nucleotide plays a key role in signal transduction in a wide variety of cellular responses. In the brain, cAMP has been implicated in learning, memory processes and other brain functions. METHODOLOGY/PRINCIPAL FINDINGS Here we show a novel funct...

phosphodiesterase-4 inhibitor BAY 19-8004 on lung function and airway inflammation in asthma and chronic obstructive pulmonary disease (COPD). Pulm Pharmacol Ther 2003; 16: 341–347. 5 Hatzelmann A, Morcillo EJ, Lungarella G, et al. The preclinical pharmacology of roflumilast – a selective, oral phosphodiesterase 4 inhibitor in development for chronic obstructive pulmonary disease. Pulm Pharmaco...

The present study was undertaken to examine whether phosphodiesterases III and IV regulate renal cAMP level and whether inhibition of these enzymes influences renal functions in anesthetized dogs. The intrarenal arterial infusion of rolipram (0.1, 0.3, and 1 microgram/kg/min), a selective phosphodiesterase IV inhibitor, increased renal blood flow, glomerular filtration rate, urine flow rate, an...

The ribonuclease and phosphodiesterase activities of rat liver plasma membranes, purified from the crude nuclear fraction by centrifugation in an A-XII zonal rotor and flotation, were examined and compared. The plasma membrane is responsible for between 65 and 90% of the phosphodiesterase activity of the cell and between 25 and 30% of the particulate ribonuclease activity measured at pH8.7 in t...

1. A mouse liver plasma-membrane preparation was solubilized in an N-dodecylsarcosinate-Tris buffer, pH7.8, and the proteins and glycoproteins were separated by a rate-zonal centrifugation in sucrose-detergent gradients. 2. A peak of alkaline phosphodiesterase activity which sedimented ahead of the 5'-nucleotidase peak was associated with a major glycoprotein component of the plasma membrane. 3...

Lead and mercury have been reported to alter selectively the rod component of the electroretinogram, and to inhibit the phosphodiesterase in rod outer segments which may be responsible for generating the rods' light response. The authors have investigated the effect of lead and mercury on the voltage response to light of rods, and compared these effects with those of the phosphodiesterase inhib...