Objective: To describe a particular harvesting procedure for isolating intact porcine aortic heart valve roots as potential sources for biologic scaffolds.
Methods: Fresh porcine hearts were brought to the Tissue Engineering and Regenerative Medicine Laboratory at the University of Medicine and Pharmacy in Targu Mures. The aortic roots were extracted from the porcine hearts by anatomical dissection. For this purpose, we used a basic surgical instrument kit. This initial phase was the first step in obtaining acellular extracellular matrix as a biologic scaffold material.
Results: Aortic roots were isolated with preservation of the ascending aorta as well as the intact aortic sinus and coronaries together with the adjacent myocardial tissue and anterior leaflet of the mitral valve. This approach allowed for safe mounting of roots into mounting rings for perfusion decellularization.
Conclusions: The described procedure is a feasible protocol for obtaining intact biological valvular scaffolds from porcine hearts. Reduced requirements regarding tools and personnel underline the easiness of aortic root harvesting using this particular procedure.
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http://dx.doi.org/10.1515/amma-2017-0029 | DOI Listing |
Transpl Int
January 2025
Department of Biological and Biomedical Sciences, School of Health and Life Sciences, Glasgow Caledonian University, Glasgow, Scotland, United Kingdom.
Preclinical and clinical xenotransplantation trials have shown that successful outcomes depend on a number of factors including the prevention of xenozoonoses. Preclinical trials involving pig kidneys and hearts transplanted into various non-human primates have revealed the potential impact of pig pathogens being present in the transplanted organ/tissue, mainly viruses. The concept of "designated pathogen-free donor animals" was developed to ensure elimination of pathogens during the breeding of donor animals to mitigate this occurrence.
View Article and Find Full Text PDFJACC Clin Electrophysiol
January 2025
Department of Medicine and Research Center, Montreal Heart Institute and Université de Montréal, Montréal, Québec, Canada; Institute of Pharmacology, West German Heart and Vascular Center, University of Duisburg-Essen, Essen, Germany. Electronic address:
PLoS One
January 2025
Department of Emergency Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea.
Recent studies suggested intrathecal vasodilator administration as a therapy to mitigate post-ischemic cerebral hypoperfusion following cardiac arrest. We examined the effects of two commonly used intrathecal vasodilators, sodium nitroprusside (SNP) and nicardipine, on cerebral pial microcirculation, cortical tissue oxygen tension (PctO2), and electrocortical activity in the early post-resuscitation period using a porcine model of cardiac arrest. Thirty pigs were resuscitated after 14 min of untreated cardiac arrest.
View Article and Find Full Text PDFAm J Physiol Heart Circ Physiol
January 2025
Interdisciplinary Stem Cell Institute, University of Miami Leonard M. Miller School of Medicine, Miami, Florida.
Swine are increasingly utilized in cardiovascular research due to their anatomical and physiological similarities to humans, particularly for studying diastolic dysfunction. While MRI offers excellent structural imaging, echocardiography provides superior real-time assessment of diastolic parameters. To address the lack of standardized methods and reduce variability across studies, we present a comprehensive guide for performing echocardiography in Yorkshire pigs, detailing anatomical considerations, equipment requirements, and technical approaches.
View Article and Find Full Text PDFEur Heart J
January 2025
State Key Laboratory of Cardiovascular Diseases and Medical Innovation Center, Shanghai Heart Failure Research Center, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, China.
Background And Aims: Members of the CCN matricellular protein family are crucial in various biological processes. This study aimed to characterize vascular cell-specific effects of CCN5 on neointimal formation and its role in preventing in-stent restenosis (ISR) after percutaneous coronary intervention (PCI).
Methods: Stent-implanted porcine coronary artery RNA-seq and mouse injury-induced femoral artery neointima single-cell RNA sequencing were performed.
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