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Exploring Integrin α5β1 as a Potential Therapeutic Target for Pulmonary Arterial Hypertension: Insights From Comprehensive Multicenter Preclinical Studies.
Circulation
January 2025
Pulmonary Hypertension Research Group, Québec Heart and Lung Institute Research Center, Quebec City, QC, Canada (S.-E.L., Y.G., T.Y., T.S., M.M., C.R., M.S., S.B.-B., A.B., C.T., A.P., R.E.K., S.M., K.Y., F.P., S.P., O.B., S.B.).
Background: Pulmonary arterial hypertension (PAH) is characterized by obliterative vascular remodeling of the small pulmonary arteries (PAs) and progressive increase in pulmonary vascular resistance leading to right ventricular failure. Although several drugs are approved for the treatment of PAH, mortality rates remain high. Accumulating evidence supports a pathological function of integrins in vessel remodeling, which are gaining renewed interest as drug targets.
View Article and Find Full Text PDFECG-Gated Cardiac Multidetector CT Evaluation of the Normal Pulmonary Valve and Right Ventricular Outflow Tract in Dogs.
Vet Radiol Ultrasound
January 2025
AniCura Istituto Veterinario Novara, Monticello, Italy.
With the advancement in imaging technology, ECG-gated cardiac multidetector computed tomography (MDCT) has emerged as a tool for the anatomic evaluation of the pulmonary valve and right ventricular outflow tract (RVOT) in human medicine. Currently, the evaluation of the pulmonary valve relies primarily on echocardiographic examination. However, the bi-dimensional nature of this technique and the location/orientation of the pulmonary valve in the thoracic cavity can pose challenges.
View Article and Find Full Text PDFBlack Esophagus: A Life-Threatening Consequence of Hypoperfusion.
Cureus
December 2024
Gastroenterology II, Mohammed V Military Teaching Hospital, Rabat, MAR.
Acute esophageal necrosis (AEN) is an uncommon endoscopic finding characterized by a patchy or diffuse circumferential black pigmentation of the esophageal mucosa, corresponding to ischemic necrosis. It usually presents with upper gastrointestinal bleeding and is thought to be caused by a systemic low blood flow in patients with predisposing risk factors, like advanced age and cardiovascular comorbidities. After initial hemodynamic stabilization, diagnosis is established by esophagogastroduodenoscopy (EGD) with careful biopsies and histological evaluation.
View Article and Find Full Text PDFElevated Hepatic Copper Content in Porto-Sinusoidal Vascular Disorder (PSVD): Leading Down a Wrong Track.
Liver Int
February 2025
Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria.
Background And Aims: Porto-sinusoidal vascular disorder (PSVD) is a rare vascular liver disorder characterised by specific histological findings in the absence of cirrhosis, which is poorly understood in terms of pathophysiology. While elevated hepatic copper content serves as diagnostic hallmark in Wilson disease (WD), hepatic copper content has not yet been investigated in PSVD.
Methods: Patients with a verified diagnosis of PSVD at the Medical University of Vienna and available hepatic copper content at the time of diagnosis of PSVD were retrospectively included.
Aortopathy in repaired tetralogy of Fallot and David procedure.
Cardiovasc Diagn Ther
December 2024
Department of Cardiology, St. Luke's International Hospital, Tokyo, Japan.
Tetralogy of Fallot (TOF) is a condition that often leads to long-term enlargement of the aortic root in after surgery. The aortic dilation is believed to be caused by histological abnormalities of the aortic media and the hemodynamic characteristics of increased aortic flow, compared to pulmonary flow. Severe cyanosis, severe right ventricular outflow tract (RVOT) obstruction, older age at repair, a larger aortic size at the time of repair, and a history of an aortopulmonary shunt parameters related to long-standing volume overload of the aortic root were the reported risk factors.
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