Results 241 to 250 of about 2,173,818 (298)

The acute effects of exercise intensity and inorganic nitrate supplementation on the Buckberg ratio in postmenopausal females

Experimental Physiology, EarlyView.
Abstract Menopause increases coronary heart disease risk, in part through reduced oestrogen‐mediated nitric oxide (NO) bioavailability. The Buckberg ratio, an index of myocardial oxygen supply–demand balance, in which higher values reflect more favourable myocardial perfusion, is lower in postmenopausal females (PMFs) than in age‐matched males.
Cassandra C. Derella, Austin C. Hogwood, Joaquin Ortiz de Zevallos, Nathan R. Weeldreyer, Kaitlin M. Love, Arthur Weltman, Jason D. Allen   +6 more
wiley   +1 more source

Left main coronary artery stenosis presenting with negative myocardial perfusion imaging: a case report of balanced ischaemia. [PDF]

Eur Heart J Case Rep
Agyeman WY, Allihien SM, Berchie PO, Kumi A, Chinnatambi C.   +4 more
europepmc   +1 more source

Sirtuin signalling governs calcium homeostasis and mitochondrial function in metabolic syndrome cardiomyocytes

Experimental Physiology, EarlyView.
Abstract Metabolic syndrome (MetS) is a major contributor to cardiovascular disease and is characterized by impaired Ca2+ handling and mitochondrial dysfunction in cardiomyocytes. However, the upstream mechanisms linking metabolic stress to these alterations remain incompletely defined.
Firat Akat, Leila Aryan, Suatnur Şık, Erkan Tuncay   +3 more
wiley   +1 more source

Temporal trends in pretest probability and normal scan rates in myocardial perfusion imaging: a 24-year experience from a Swiss tertiary referral center (between 2000 and 2024). [PDF]

Eur Heart J Cardiovasc Imaging
Frey SM, Schneider IG, Otto AS, Geiser FM, Wild D, Haaf P, Mahfoud F, Zellweger MJ.   +7 more
europepmc   +1 more source

Elucidating the cellular determinants of the end‐systolic pressure‐volume relationship of the heart via computational modelling

The Journal of Physiology, EarlyView.
Abstract figure legend Using a multiscale computational model of left ventricular electromechanics, we investigated how sarcomere dynamics influence the end‐systolic pressure‐volume (ESPV) relationship in ejecting beats compared to isovolumetric beats.
Francesco Regazzoni, Corrado Poggesi, Cecilia Ferrantini   +2 more
wiley   +1 more source

Imaging characteristics of resting myocardial perfusion imaging and myocardial glucose metabolic imaging in stress cardiomyopathy. [PDF]

Quant Imaging Med Surg
Liu B, Yang X, Zhang F, Yu W, Wang Y.
europepmc   +1 more source

NAD replenishment restores mitochondrial function and thermogenesis in the brown adipose tissue of mice with obesity

The Journal of Physiology, EarlyView.
Abstract figure legend A high‐fat diet (HFD) induces brown adipose tissue (BAT) whitening, mitochondrial dysfunction (damaged cristae, fragmentation), reduced NAD+ levels and impaired thermogenesis, leading to lower energy expenditure and metabolic inflexibility.
Renata R. Braga, Matheus B. Rocha, Ana P. Morelli, Raul G. da Costa, Marcelo A. S. Mori, Adelino S. R. da Silva, José R. Pauli, Dennys E. Cintra, Eduardo R. Ropelle   +8 more
wiley   +1 more source

Myocardial perfusion imaging SPECT left ventricle segmentation with graphs. [PDF]

EJNMMI Phys
Szűcs ÁI, Kári B, Pártos O.
europepmc   +1 more source

Born early, age fast: Consequences of premature birth on chronic disease and accelerated ageing

The Journal of Physiology, EarlyView.
Abstract figure legend ELGANs are exposed to several postnatal pro‐oxidant stressors, including ambient and supplemental oxygen, mechanical ventilation, infections, hyperalimentation, excessive glucocorticoids and intermittent hypoxia. Since endogenous antioxidant defences are underdeveloped, this imbalance promotes oxidative stress and inflammation ...
Estelle B. Gauda, Julijana Ivanovska, Dwayne Mascarenhas, Jeffrey Antwi, Atefeh Mohammadi, Bonny Jasani   +5 more
wiley   +1 more source

Artificial Intelligence-Enhanced Perfusion Scoring Improves the Diagnostic Accuracy of Myocardial Perfusion Imaging. [PDF]

J Nucl Med
Miller RJH, Kavanagh P, Lemley M, Liang JX, Sharir T, Einstein AJ, Fish MB, Ruddy TD, Kaufmann PA, Sinusas AJ, Miller EJ, Bateman TM, Dorbala S, Di Carli M, Hayes S, Friedman J, Berman DS, Dey D, Slomka PJ.   +18 more
europepmc   +1 more source