منابع مشابه
Pharmacology of cardiac potassium channels.
Cardiac K+ channels are membrane-spanning proteins that allow the passive movement of K+ ions across the cell membrane along its electrochemical gradient. They regulate the resting membrane potential, the frequency of pacemaker cells and the shape and duration of the cardiac action potential. Additionally, they have been recognized as potential targets for the actions of neurotransmitters and h...
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Cardiac myocytes are non-neural cells that possess the capacity to propagate regenerative depolarizing potentials. This allows them to coordinate the exquisite timing necessary to orchestrate millions of these individual muscle cells to generate a heartbeat. Abnormalities of cardiac conduction and cardiac electrophysiology are central to many disease processes and account for significant morbid...
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Acetylcholine has been demonstrated to speed the heart of several of the decapod crustacea (Welsh, 1939 a and b; Davenport, Loomis and Opler, 1940 and Davenport, 1941), the grasshopper (Hamilton, 1939), and LiMulus (Garrey, 1941). Is this reaction, which may be indicative of a neurogenic heart, a general characteristic of the arthropods? The pharmacology of the heart of the cladoceran, Daphnia,...
متن کاملTitle Pharmacology of Cardiac Potassium Channels
Cardiac K channels are cardiomyocyte membrane proteins that regulate K ion flow across the cell membrane on the electrochemical gradient, and determine the resting membrane potential and the cardiac action potential morphology and duration. Several K channels have been well studied in the human heart. They include the transient outward K current Ito1, the ultra-rapidly delayed rectifier current...
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Although cardiac involvement is an infrequent presentation in human hydatidosis, early diagnosis and prompt surgical intervention of cardiac hydatid cyst are of utmost importance for the prevention of potential complications. We report a young female patient who presented with a huge cardiac hydatid cyst and severe heart failure symptoms undergoing successful surgical cyst removal with late fol...
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ژورنال
عنوان ژورنال: Proceedings of the Royal Society of Medicine
سال: 1959
ISSN: 0035-9157
DOI: 10.1177/003591575905201215