Catecholamine-Storing Cells in the Cyclostome Heart
نویسندگان
چکیده
منابع مشابه
Catecholamine-storing cells in the cyclostome heart.
The lamprey heart contains characteristic catecholamine-storing cells in both the atrium and the ventricle. Sufficient circumstantial evidence is available indicating that catecholamines together with protein carbohydrate complexes are contained in these cells within the membrane bound cytoplasmic granules. If the "recepto-secretory function" and "neuroectodermal origin" of these cells are prov...
متن کاملElectron and fluorescence microscopic study of specific granules in rat atrial muscle cells.
Many dense granules have been found in the cardiac muscle cells and in the specific cells which are present in the interstitial tissue of the cyclostome heart by electron microscopy (OSTLUND et al. 1960, BLOOM et al. 1961). Chemical analysis of these granules revealed a large amount of catecholamine contained in the granules (BLOOM et al. 1961). On the other hand, the presence of spherical, ele...
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Experimental findings suggest a pronounced concentration gradient of norepinephrine (NE) between the intravascular and interstitial compartments of the heart, compatible with an active neuronal reuptake (U1) and/or an endothelial barrier. Using the microdialysis technique in eight anesthetized pigs, we investigated this NE gradient, both under baseline conditions and during increments in either...
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羽野 壽 ・岩 田 平太郎 ・岩 田 宣芳 ・本 間 弘茂 A difference has been demonstrated between the total catecholamine contents of the atrium and the ventricle in the dog heart (1) and in the rabbit heart (2) : the level being higher in the atrium than in the ventricle. Moreover, a depletion of catecholamine in various tissues after reserpine injection was reported by many workers (3-6) and several studies (7, 8) ha...
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One of the key mechanisms involved in sympathoexcitation in chronic heart failure (HF) is the activation of the adrenal glands. Impact of the elevated catecholamines on the hemodynamic parameters has been previously demonstrated. However, studies linking the structural effects of such overactivation with secretory performance and cell metabolism in the adrenomedullary chromaffin cells in vivo h...
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ژورنال
عنوان ژورنال: Archivum histologicum japonicum
سال: 1977
ISSN: 0004-0681
DOI: 10.1679/aohc1950.40.supplement_241