Glenn-Fontan procedure is essential to treat Single-ventricle congenital heart disease
However, Glenn surgeryโถ๏ธloss of pulmonary arterial flow pulsatility & pulmonary vascular malformation
How?๐ค
Here, in this fresh-on-the-shelf
@JCI_insight paper
Dr. Ondine Cleaver lab
@cleaverlab๐
๐Profiles biophysical alterations of right pulmonary artery flow in a rat model of Glenn surgery
Simultaneous drop of 1โฃVelocity 2โฃPressure 3โฃCircumferential stretch
๐Dissects the transcriptomes of pulmonary arterial endothelial cells with Pulsatile vs Non-pulsatile
1โฃFlow/Shear
2โฃPressure
3โฃStretch
Several intriguing findings
๐Puls. Pressure & Stretch โฌProteasome โซmTOR
๐Puls. Stretch โซNotch HedgeHog
๐Puls. Flow & Pressure โซTGFฮฒ
๐No impact on arteriovenous differentiation
๐Mechanosensitive, Dimension-specific
#Angiogcrine!!๐คฉ
A critical in vivo relevance
Puls. Stretch-induced endothelial PDGFB maintains Pulmonary Arterial (not Venous) Smooth Muscle Cell Mass๐ค
Does ECMO non-pulsatile flow cause similar mural-weakening issues?
insight.jci.org/articles/vieโฆ