Garcia-Lunar, InesPereda, DanielSantiago, EvelynSolanes, NuriaNuche, JorgeAscaso, MariaBobí, JoaquimSierra, FedericoDantas, Ana PaulaGalan-Arriola, CarlosSan Antonio, RodolfoSánchez-Quintana, DamiánSanchez-Gonzalez, JavierBarberá, Joan AlbertRigol, MontserratFuster, ValentinIbáñez, BorjaSabaté, ManelGarcia-Alvarez, Ana2020-04-082020-04-082019-01Basic Res Cardiol. 2019; 114(2):50300-8428http://hdl.handle.net/20.500.12105/9491There is scarce evidence for pulmonary artery denervation (PADN) as a potential treatment for chronic postcapillary pulmonary hypertension (PH). We aimed to perform a proof-of-concept of PADN in a translational model of chronic PH. Nineteen pigs with chronic postcapillary PH (secondary to pulmonary vein banding) were randomized to surgical-PADN (using bipolar radiofrequency clamps) or sham procedure. Additionally, 6 healthy animals underwent percutaneous-PADN to compare the pulmonary artery (PA) lesion generated with both approaches. In the surgical-PADN arm, hemodynamic evaluation and cardiac magnetic resonance (CMR) were performed at baseline and at 2 and 3-month follow-up. Histological assessment was carried out at the completion of the protocol. Eighteen pigs (6 following surgical-PADN, 6 sham and 6 percutaneous-PADN) completed the protocol. A complete transmural PA lesion was demonstrated using surgical clamps, whereas only focal damage to adventitial fibers was observed after percutaneous-PADN. In the surgical-PADN arm, the hemodynamic profile did not significantly differ between groups neither at baseline [mean pulmonary artery pressure (mPAP) median values of 32.0 vs. 27.5 mmHg, P = 0.394 and indexed pulmonary vascular resistance (iPVR) 5.9 vs. 4.7 WU m2, P = 0.394 for PADN/sham groups, respectively] nor at any follow-up (mPAP of 35.0 vs. 35.0 mmHg, P = 0.236 and iPVR of 8.3 vs. 6.7 WU m2, P = 0.477 at third month in PADN/sham groups, respectively). Surgical-PADN was not associated with any benefit in RV anatomy or function on CMR/histology. In a large-animal model of chronic postcapillary PH, transmural PADN with surgical clamps was associated with a neutral pulmonary hemodynamic effect.engAMhttp://creativecommons.org/licenses/by-nc-nd/4.0/DenervationMagnetic resonance imagingPulmonary hypertensionTreatmentAnimalsDenervationDisease Models, AnimalPulmonary ArteryRandom AllocationSwineTranslational Medical ResearchHypertension, PulmonaryAttribution-NonCommercial-NoDerivatives 4.0 Internacional306357781142510.1007/s00395-018-0714-x1435-1803Basic research in cardiologyopen access