Skip to main content
Ir a la página de inicio de la Comisión Europea (se abrirá en una nueva ventana)
español es
CORDIS - Resultados de investigaciones de la UE
CORDIS
Contenido archivado el 2024-06-18

Pulmonary hypertension and acute lung injury: Role of sphingomyelinase in the signalling of hypoxia in pulmonary arteries

Objetivo

Hypoxic pulmonary vasoconstriction (HPV) is a unique vasoconstrictor response that diverts blood flow away from poorly ventilated lung regions allowing ventilation-perfusion matching. Despite being a highly conserved adaptive physiological mechanism in lung breathing vertebrates that optimizes blood oxygen saturation, hypoxia sensing in the lung plays a critical pathophysiological role in a number of pulmonary disorders. COPD is associated with chronic hypoxia and can lead in some patients to secondary pulmonary hypertension (PH). Where COPD is confounded with PH, patients have a worse prognosis for survival. In contrast, failure of HPV is often a critical determinant of hypoxemia in sepsis- and trauma-induced lung injury, including the acute respiratory distress syndrome (ARDS). Despite intensive research in the field, the molecular bases of HPV are far from being elucidated. We have recently shown that ceramide production derived from neutral sphingomyelinase (nSMase) and subsequent activation of PKCz are early and necessary events in the signaling cascade of HPV. In sepsis/ARDS an acidic form of SMase is induced. This form can deplete the downstream signaling components of nSMase and is associated with inflammation. Inhibition of nSMase prevents HPV whilst inhibition of aSMase may prevent dysfunction associated with ARDS/sepsis. Thus, these data suggest both nSMase and aSMase are new potential therapeutic targets in the treatment of PH and ARDS/sepsis. The purpose of this application is therefore to fully investigate the role of SMase in the intracellular signaling of hypoxia and inflammation in pulmonary vessels. Secondly, I will investigate associations in SMase activity and gene polymorphisms in tissue from COPD patients with or without PH. This approach will enable us to both identify new treatment targets and potential genetic markers predictive of susceptibility to PH.

Ámbito científico (EuroSciVoc)

Este proyecto aún no se ha clasificado con EuroSciVoc.
Sugiera los ámbitos científicos que considere más relevantes y ayúdenos a mejorar nuestro servicio de clasificación.

Programa(s)

Tema(s)

Convocatoria de propuestas

FP7-PEOPLE-2009-RG
Consulte otros proyectos de esta convocatoria

Régimen de financiación

MC-ERG - European Re-integration Grants (ERG)

Coordinador

UNIVERSIDAD COMPLUTENSE DE MADRID
Aportación de la UE
€ 45 000,00
Dirección
AVENIDA DE SENECA 2
28040 Madrid
España
Región
Comunidad de Madrid Comunidad de Madrid Madrid
Tipo de actividad
Higher or Secondary Education Establishments
Enlaces
Coste total
Sin datos