Am J Physiol
Cold Spring Harbor Laboratory, New York 11724.
Published: December 1990
Transgenic mice expressing atrial natriuretic factor-SV40 T-antigen fusion genes (ANF-TAG) developed unilateral right atrial tumors composed of differentiated dividing cardiomyocytes. The atrial tumors could be propagated as transplantable tumor lineages in syngeneic animals. Cardiomyocytes derived from ANF-TAG atrial tumors did not proliferate in tissue culture. However, cardiomyocytes derived from the transplantable tumor lines proliferated in culture, and these proliferating cardiomyocytes could be passaged in culture and recovered from frozen stocks. Cardiomyocytes from either tumor source were highly differentiated as determined by diverse functional and structural criteria. The cells continued to express numerous cardiac-specific proteins and retained ultrastructural features characteristic of cardiomyocytes including well-formed myofibrils, transverse tubules, and intercalated disks. In addition, the cultured cells displayed spontaneous electrical and contractile activities. These atrial tumor cardiomyocytes are a novel experimental resource for the identification of genes regulating the cardiomyocyte cell cycle.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1152/ajpheart.1990.259.6.H1826 | DOI Listing |
Cureus
December 2024
Second Department of Surgery, Faculty of Medicine, Yamagata University, Yamagata, JPN.
Papillary fibroelastomas (PFEs) are rare, benign, primary cardiac tumors, typically found on the valve surfaces and more commonly on the left side of the heart, with occurrences in the right atrium even rarer. In this case, a highly mobile tumor was incidentally detected in the right atrium of an 83-year-old woman with advanced right lung cancer during preoperative transthoracic echocardiography and magnetic resonance imaging. Although the patient was asymptomatic and of advanced age, the tumor's high mobility warranted resection.
View Article and Find Full Text PDFAME Case Rep
January 2025
Department of Oncology, Northern Jiangsu People's Hospital Affiliated to Yangzhou University, Yangzhou, China.
Background: Treatment options for patients with high-risk metastatic clear cell renal cell carcinoma (mccRCC) include immune checkpoint inhibitors and tyrosine kinase inhibitors (TKIs), but clinical manifestations and treatment of these patients are rarely reported because patients with cardiac metastases and abrupt circulatory disorders are very rare and there are no precise guidelines to follow. In this study, we analyzed and discussed the clinical characteristics, related characteristics, pathogenesis and treatment strategies of patients with cardiac metastases of kidney cancer, so as to provide reference for the diagnosis and treatment of cardiac metastatic tumors.
Case Description: The patient was diagnosed with renal cell carcinoma and underwent surgical radical resection, no special treatment was performed after surgery.
Cardiovasc Toxicol
January 2025
Department of Morphological Sciences, State University of Maringa, Maringa, Parana, Brazil.
5-Fluorouracil (5-FU) is a chemotherapeutic that is used to treat solid tumors. However, 5-FU is associated with several side effects, including cardiotoxicity. Considering the importance of the intrinsic cardiac nervous system (ICNS) for the heart and that little is known about effects of 5-FU on this nervous system plexus, the purpose of the present study was to evaluate effects 5-FU at a low dose on the ICNS and oxidative and inflammatory effects in the heart in Wistar rats.
View Article and Find Full Text PDFPort J Card Thorac Vasc Surg
January 2025
Thoracic Surgery Department, Pulido Valente Hospital, CHULN, Lisbon, Portugal.
Introduction: Complete radical resection is crucial for successfully treating thymic carcinomas. However, when the invasion of the great vessels or the heart in Masaoka III and IV stages occurs, the management poses more challenges. The R0 resection often requires neoadjuvant treatment.
View Article and Find Full Text PDFMedicine (Baltimore)
January 2025
Department of Medical Imaging, Jincheng People's Hospital, Shanxi, China.
Rationale: Thrombus is the most common occupying lesion in the cardiac chambers, it is often distinguished from cardiac neoplastic occupations. Among them, the most common is cardiac myxoma, whose imaging manifestations are often confused with thrombus. However, the 2 types of lesions have different therapeutic strategies and are both potentially high-risk sources of embolism, so early differentiation between intracardiac thrombus and cardiac tumor is essential.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!
© LitMetric 2025. All rights reserved.