Author Archives: Vanda Pinto PhD

Genetic Testing Leads to Improved Prognosis for Woman With Rare PAH

Identification of mutations in the ATP13A3 gene, which are associated with a severe form of pulmonary arterial hypertension (PAH), led doctors to select a riskier treatment approach for a 21-year-old woman to prevent her symptoms from worsening, according to a case study. “Short-term follow-up is encouraging, and the patient…

Using Oxygen Aids Exercise in PH-HFpEF Patients Without Hypoxemia

Breathing oxygen-enriched air can significantly improve exercise performance in people with pulmonary hypertension (PH) linked to heart failure with preserved ejection fraction (HFpEF), including those who might not use supplemental oxygen, according to a small clinical study. Better blood-oxygen levels and more efficient breathing (exchange of carbon dioxide and…

Low Oxygen Increases Chloride Levels in PASMCs in Animal Study

Higher levels of chloride in pulmonary artery smooth muscle cells (PASMCs) may contribute to the development of pulmonary hypertension (PH) after exposure to low oxygen (hypoxia), a study in a rat model suggested. The study, “Increased intracellular Cl− concentration in pulmonary arterial myocytes is associated with chronic hypoxic…

Higher CDC2 Protein Levels Increase Cell Proliferation in PAH

A protein known as cell division cycle protein 2 (CDC2) enhances the proliferation of pulmonary artery smooth muscle cells — those lining the walls of lung arteries — in people with pulmonary arterial hypertension (PAH), a study reported. Additionally, the increased level of CDC2 in these cells was found…

Moving From Tracleer to Letairis Seen as Safe for PAH Patients

People with stable pulmonary arterial hypertension (PAH) can safely switch from Tracleer (bosentan) to Letairis (ambrisentan) without compromising their heart function or general health status, a study from China reports. PAH patients in Hunan province may also benefit financially by moving from Tracleer to Letairis, as it…

New IPAH Gene Variants Identified in Large Global Study

A study of rare gene variants has identified two new candidates — fibulin 2 (FBLN2) and platelet-derived growth factor D (PDGFD) — that increase risk for adult-onset idiopathic pulmonary arterial hypertension (IPAH). In-depth genetic analyses also predicted that about 15% of IPAH cases in children are caused by de…

Repurposed Trifluoperazine (TFP) May Be Effective PAH Therapy

Trifluoperazine or TFP, an approved schizophrenia medication, also may be effective in the treatment of pulmonary arterial hypertension (PAH), a preclinical study suggests. In rat models of PAH, trifluoperazine was found to provide therapeutic benefits — without causing detectable side effects. The study, “Preclinical Investigation of Trifluoperazine…

Some PAH Patients May Benefit from Switch to Adempas

Intermediate-risk pulmonary arterial hypertension (PAH) patients may see their symptoms improve after switching from phosphodiesterase-5 inhibitors (PDE-5i) to Adempas (riociguat), results from the Phase 4 REPLACE clinical trial show. The transition to Adempas also appears to be a safer option than with PDE-5i maintenance therapy. The study, “Switching…