Consulta: subjectFacets:"Pulmonary arterial hypertension"
Registros recuperados: 3
Data/hora: 11/06/2024 05:48:43

Insights on the epigenetic mechanisms underlying pulmonary arterial hypertension
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Luna,R.C.P.; de Oliveira,Y.; Lisboa,J.V.C.; Chaves,T.R.; de Araújo,T.A.M.; de Sousa,E.E.; Miranda Neto,M.; Pirola,L.; Braga,V.A.; de Brito Alves,J.L.
Pulmonary arterial hypertension (PAH), characterized by localized increased arterial blood pressure in the lungs, is a slow developing long-term disease that can be fatal. PAH is characterized by inflammation, vascular tone imbalance, pathological pulmonary vascular remodeling, and right-sided heart failure. Current treatments for PAH are palliative and development of new therapies is necessary. Recent and relevant studies have demonstrated that epigenetic processes may exert key influences on the pathogenesis of PAH and may be promising therapeutic targets in the prevention and/or cure of this condition. The aim of the present mini-review is to summarize the occurrence of epigenetic-based mechanisms in the context of PAH physiopathology, focusing on the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Epigenetic; Pulmonary arterial hypertension; DNA Methylation; Histone acetylation; MiRNAs.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2018001200301

Early neonatal echocardiographic findings in an experimental rabbit model of congenital diaphragmatic hernia
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Manso,P.H.; Figueira,R.L.; Prado,C.M.; Gonçalves,F.L.; Simões,A.L.B.; Ramos,S.G.; Sbragia,L.
This study aimed to demonstrate that congenital diaphragmatic hernia (CDH) results in vascular abnormalities that are directly associated with the severity of pulmonary hypoplasia and hypertension. These events increase right ventricle (RV) afterload and may adversely affect disease management and patient survival. Our objective was to investigate cardiac function, specifically right ventricular changes, immediately after birth and relate them to myocardial histological findings in a CDH model. Pregnant New Zealand rabbits underwent the surgical procedure at 25 days of gestation (n=14). CDH was created in one fetus per horn (n=16), and the other fetuses were used as controls (n=20). At term (30 days), fetuses were removed, immediately dried and weighed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Congenital diaphragmatic hernia; Right ventricle; Pulmonary arterial hypertension; Echocardiography.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2015000300234

Tadalafil-loaded PLGA microspheres for pulmonary administration: preparation and evaluation
Provedor de dados: Brazilian Journal of Pharmaceutical Sciences
Autores: Yang,Zhenlei; Wang,Longmei; Tian,Liu; Zhang,Xiuping; Huang,Guihua.
Tadalafil, a long-acting PED-5 inhibitor, is commonly used for the treatment of pulmonary arterial hypertension (PAH). However, its efficacy and clinical application are severely limited by the poor water solubility, low bioavailability and a series adverse effects (e.g. headaches, indigestion). In this study, tadalafil was prepared and loaded into biodegradable PLGA (poly(lactic-co-glycolic acid)) microspheres (TDF-PLGA-MS) via emulsification-solvent evaporation. The resulting microspheres were processed into pulmonary inhalant by freeze drying. The TDF-PLGA-MS was spherical and uniform, with an average particle diameter ~10.29 µm. The encapsulation efficiency and drug loading yield of TDF-PLGA-MS were 81.68% and 8.52%, respectively. The investigation of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pulmonary arterial hypertension; Tadalafil; PLGA; Microspheres; Pulmonary administration; Micromeritic; In vitro release; Pharmacokinetic; Tissue distribution.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502019000100587