Some effects of mammalian neurohypophyseal hormones on metabolism and active transport of sodium by the isolated toad bladder.
نویسندگان
چکیده
The preparation of tissue, the composition of the incubating media, and the analytical techniques used in this study have all been reported in previous publications from this laboratory (l-3). We are indebted to Professor V. duvigneaud for the generous supplies of the two purified neurohypophyseal hormones used in this study, oxytocin (ON-5) and arginine-vasopressin (AVN-3). The commercial vasopressin used was pitressin (Parke, Davis and Company).
منابع مشابه
Some Effects of Mammalian Neurohypophyseal Mormones on Metabolism and Active Transport of Sodium by the Isolated Toad Bladder*
The preparation of tissue, the composition of the incubating media, and the analytical techniques used in this study have all been reported in previous publications from this laboratory (l-3). We are indebted to Professor V. duvigneaud for the generous supplies of the two purified neurohypophyseal hormones used in this study, oxytocin (ON-5) and arginine-vasopressin (AVN-3). The commercial vaso...
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Measurements of diffusion permeability and of net transfer of water have been made across the isolated urinary bladder of the toad, Bufo marinus, and the effects thereon of mammalian neurohypophyseal hormone have been examined. In the absence of a transmembrane osmotic gradient, vasopressin increases the unidirectional flux of water from a mean of 340 to a mean of 570 microl per cm(2) per hour ...
متن کامل45Ca fluxes in isolated toad bladder epithelial cells: effects of agents which alter water or sodium transport.
Vasopressin enhances osmotic water flow and sodium transport across the toad urinary bladder by mechanisms involving cyclic AMP and calcium. It is believed that changes in intracellular calcium concentration or in its binding to membranes may in part mediate the effects of vasopressin. In addition, several agents which alter the response of the toad bladder to vasopressin may also act by alteri...
متن کاملActive Sodium Transport by T H E Isolated Toad
Studies were made of the active ion transport by the isolated urinary bladder of the European toad, Bufo bufo, and the large American toad, Bufo marinus. The urinary bladder of the toad is a thin membrane consisting of a single layer of mucosal cells supported on a small amount of connective tissue. The bladder exhibits a characteristic transmembrane potential with the serosal surface electrica...
متن کاملActive Sodium Transport by the Isolated Toad Bladder
Studies were made of the active ion transport by the isolated urinary bladder of the European toad, Bufo bufo, and the large American toad, Bufo marinus. The urinary bladder of the toad is a thin membrane consisting of a single layer of mucosal cells supported on a small amount of connective tissue. The bladder exhibits a characteristic transmembrane potential with the serosal surface electrica...
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عنوان ژورنال:
- The Journal of biological chemistry
دوره 235 شماره
صفحات -
تاریخ انتشار 1960