Repurposing of the PDE5 Inhibitor Sildenafil for the Treatment of Persistent Pulmonary Hypertension in Neonates

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Nitric oxide (NO), an important endogenous signaling molecule released from vascular endothelial cells and nerves, activates the enzyme soluble guanylate cyclase to catalyze the production of cyclic guanosine monophosphate (cGMP) from guanosine triphosphate. cGMP, in turn, activates protein kinase G to phosphorylate a range of effector proteins in smooth muscle cells that reduce intracellular Ca2+ levels to inhibit both contractility and proliferation. The enzyme phosphodiesterase type 5 (PDE5) curtails the actions of cGMP by hydrolyzing it into inactive 5'-GMP. Small molecule PDE5 inhibitors (PDE5is), such as sildenafil, prolong the availability of cGMP and therefore, enhance NO-mediated signaling. PDE5is are the first-line treatment for erectile dysfunction but are also now approved for the treatment of pulmonary arterial hypertension (PAH) in adults. Persistent pulmonary hypertension in neonates (PPHN) is currently treated with inhaled NO, but this is an expensive option and around 1/3 of newborns are unresponsive, resulting in the need for alternative approaches. Here the development, chemistry and pharmacology of PDE5is, the use of sildenafil for erectile dysfunction and PAH, are summarized and then current evidence for the utility of further repurposing of sildenafil, as a treatment for PPHN, is critically reviewed.

Medienart:

E-Artikel

Erscheinungsjahr:

2021

Erschienen:

2021

Enthalten in:

Zur Gesamtaufnahme - volume:28

Enthalten in:

Current medicinal chemistry - 28(2021), 12 vom: 20., Seite 2418-2437

Sprache:

Englisch

Beteiligte Personen:

Poitras, Erika L [VerfasserIn]
Gust, Stephen L [VerfasserIn]
Kerr, Paul M [VerfasserIn]
Plane, Frances [VerfasserIn]

Links:

Volltext

Themen:

BW9B0ZE037
Cyclic GMP
Cyclic Nucleotide Phosphodiesterases, Type 5
EC 3.1.4.35
H2D2X058MU
Journal Article
Neonate
Nitric oxide
Phosphodiesterase 5 Inhibitors
Phosphodiesterase inhibitor
Pulmonary hypertension
Sildenafil
Sildenafil Citrate

Anmerkungen:

Date Completed 27.05.2021

Date Revised 27.05.2021

published: Print

Citation Status MEDLINE

doi:

10.2174/0929867327666200923151924

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM315359757