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The purpose of this work was to study the anatomic and metabolic changes that occur with tumor progression, regression and recurrence in a switchable MYC-driven murine breast cancer model. Serial H MRI and hyperpolarized [1-C]pyruvate metabolic imaging were used to investigate the changes in tumor volume and glycolytic metabolism over time during the multistage tumorigenesis. We show that acute de-induction of MYC expression in established tumors results in rapid tumor regression and significantly reduced glycolytic metabolism as measured by pyruvate-to-lactate conversion. Moreover, cancer recurrences occurring at the tumor sites independently of MYC expression were observed to accompany markedly increased lactate production.
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http://dx.doi.org/10.1016/j.mri.2017.07.014 | DOI Listing |
Clin Med Insights Cardiol
August 2025
Mount Sinai Fuster Heart Hospital, Icahn School of Medicine, New York, NY, USA.
Hypertrophic cardiomyopathy is a genetically inherited cardiac disorder that presents with diverse clinical phenotypes. It is associated with significant adverse outcomes, including arrhythmias and sudden cardiac death. Current gold-standard diagnostic methods include echocardiography and cardiac magnetic resonance imaging.
View Article and Find Full Text PDFNMR Biomed
October 2025
Section Biomedical Imaging, Molecular Imaging North Competence Center, Department of Radiology and Neuroradiology, University Hospital Schleswig-Holstein, Kiel University, Kiel, Germany.
Metabolomics provides snapshots of states of metabolites under specific conditions, with nuclear magnetic resonance (NMR) being one of the few noninvasive techniques. However, when applied to intact cells (e.g.
View Article and Find Full Text PDFThe purpose of this research is to estimate sensitivity maps when imaging X-nuclei that may not have a significant presence throughout the field of view. We propose to estimate the coil's sensitivities by solving a least-squares problem where each row corresponds to an individual estimate of the sensitivity for a given voxel. Multiple estimates come from the multiple bins of the spectrum with spectroscopy, multiple times with dynamic imaging, or multiple frequencies when utilizing spectral excitation.
View Article and Find Full Text PDFMagn Reson Med
July 2025
Section Biomedical Imaging, Molecular Imaging North Competence Center, Department of Radiology and Neuroradiology, University Hospital Schleswig-Holstein, Kiel University, Kiel, Germany.
Purpose: Colorectal cancer, a leading cause of death in the Western world, is increasingly affecting younger populations. The Warburg effect, characterized by enhanced lactate production, is a hallmark of this cancer type. Although F-FDG PET-CT is commonly used for diagnosis, MRI offers higher spatial and chemical resolution without the drawbacks of radiation.
View Article and Find Full Text PDFCancers (Basel)
July 2025
Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA 94563, USA.
Potent androgen receptor pathway inhibitors induce small cell neuroendocrine prostate cancer (SCNC), a highly aggressive subtype of metastatic androgen deprivation-resistant prostate cancer (ARPC) with limited treatment options and poor survival rates. Patients with metastases in the liver have a poor prognosis relative to those with bone metastases alone. The mechanisms that underlie the different behavior of ARPC in bone vs.
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