منابع مشابه
Myocardial contraction-relaxation coupling.
Since the pioneering work of Henry Pickering Bowditch in the late 1800s to early 1900s, cardiac muscle contraction has remained an intensely studied topic for several reasons. The heart is located centrally in our body, and its pumping motion demands the attention of the observer. The contraction of the heart encompasses a complex interplay of mechanical, chemical, and electrical properties, an...
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The 3 adrenergic substances, epinephrine, levarterenol and isopropylarterenol, were injected into a coronary artery of anestlietized dogs while recording the coronary artery flow (electromagnetic meter) and pi'cssurc. The effects of these substances on the peripheral coronary pressure (PCP) were recorded by occluding the flow proximal to the pressure gage. All 3 substances caused a qualitativel...
متن کاملModulation of myocardial contraction by peroxynitrite
Peroxynitrite is a potent oxidant that is quickly emerging as a crucial modulator of myocardial function. This review will focus on the regulation of myocardial contraction by peroxynitrite during health and disease, with a specific emphasis on cardiomyocyte Ca(2+) handling, proposed signaling pathways, and protein end-targets.
متن کاملTransmural myocardial mechanics during isovolumic contraction.
OBJECTIVES We sought to resolve the 3-dimensional transmural heterogeneity in myocardial mechanics observed during the isovolumic contraction (IC) phase. BACKGROUND Although myocardial deformation during IC is expected to be little, recent tissue Doppler imaging studies suggest dynamic myocardial motions during this phase with biphasic longitudinal tissue velocities in left ventricular (LV) l...
متن کامل54TH BOWDITCH LECTURE Myocardial contraction-relaxation coupling
Janssen PM. Myocardial contraction-relaxation coupling. Am J Physiol Heart Circ Physiol 299: H1741–H1749, 2010. First published September 17, 2010; doi:10.1152/ajpheart.00759.2010.—Since the pioneering work of Henry Pickering Bowditch in the late 1800s to early 1900s, cardiac muscle contraction has remained an intensely studied topic for several reasons. The heart is located centrally in our bo...
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ژورنال
عنوان ژورنال: The Keio Journal of Medicine
سال: 1969
ISSN: 1880-1293,0022-9717
DOI: 10.2302/kjm.18.147