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Abstract:

1. 1. Single injections of 15 μl of 1 M NaCl or 2 M sucrose into the carotid system of normal unanesthetized toads induced a rapid and significant decrease of urine production. 2. 2. This appears to be the first report on the existence of a Verney-like phenomena in a non-mammalian vertebrate. This antidiuresis was blocked out in the hypophysectomized diencephalic lesioned animal. 3. 3. Concurrently, small volumes (4 μl) of 1 M NaCl but not 2 M sucrose also induced antidiuresis when injected into the midbrain tegmentum of normal but not of hypophysectomized diencephalic lesioned toads. 4. 4. Larger volumes (6μl) of 2 M sucrose were needed to induce a similar antidiuresis in normals. 5. 5. Furthermore, even larger volumes (more than 8 μl) of any of both solutions were able to induce oliguria in normal as well as in hypophysectomized toads. 6. 6. On the basis of these results, the following conclusion would be drawn: (a) the brain of the toad is able to detect ionic and osmotic stimuli, (b) these stimuli apparently affect different receptors in the brain, (c) the antidiuresis initiated by these mechanisms is dependent on diencephalic integrity. © 1987.

Registro:

Documento: Artículo
Título:Antidiuretic responses to osmotic, ionic or volume stimulation of the brain in the unanesthetized toad, Bufo arenarum hensel
Autor:Segura, E.T.; Cuello, M.E.; Petriella, S.; Orti, G.
Filiación:Laboratorio de Fisiologia del Comportamiento, Instituto de Biologia y Medicina Experimental, Obligado 2490, 1428 Buenos Aires, Argentina
Palabras clave:sodium chloride; sucrose; animal; article; brain; diencephalon; diuresis; drug effect; electrolyte balance; hypophysectomy; male; osmolarity; physiology; toad; Animal; Brain; Bufo arenarum; Diencephalon; Diuresis; Hypophysectomy; Male; Osmolar Concentration; Sodium Chloride; Sucrose; Support, Non-U.S. Gov't; Water-Electrolyte Balance
Año:1987
Volumen:87
Número:1
Página de inicio:107
Página de fin:110
DOI: http://dx.doi.org/10.1016/0300-9629(87)90432-4
Título revista:Comparative Biochemistry and Physiology -- Part A: Physiology
ISSN:03009629
CAS:sodium chloride, 7647-14-5; sucrose, 122880-25-5, 57-50-1; Sodium Chloride, 7647-14-5; Sucrose, 57-50-1
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03009629_v87_n1_p107_Segura

Referencias:

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Citas:

---------- APA ----------
Segura, E.T., Cuello, M.E., Petriella, S. & Orti, G. (1987) . Antidiuretic responses to osmotic, ionic or volume stimulation of the brain in the unanesthetized toad, Bufo arenarum hensel. Comparative Biochemistry and Physiology -- Part A: Physiology, 87(1), 107-110.
http://dx.doi.org/10.1016/0300-9629(87)90432-4
---------- CHICAGO ----------
Segura, E.T., Cuello, M.E., Petriella, S., Orti, G. "Antidiuretic responses to osmotic, ionic or volume stimulation of the brain in the unanesthetized toad, Bufo arenarum hensel" . Comparative Biochemistry and Physiology -- Part A: Physiology 87, no. 1 (1987) : 107-110.
http://dx.doi.org/10.1016/0300-9629(87)90432-4
---------- MLA ----------
Segura, E.T., Cuello, M.E., Petriella, S., Orti, G. "Antidiuretic responses to osmotic, ionic or volume stimulation of the brain in the unanesthetized toad, Bufo arenarum hensel" . Comparative Biochemistry and Physiology -- Part A: Physiology, vol. 87, no. 1, 1987, pp. 107-110.
http://dx.doi.org/10.1016/0300-9629(87)90432-4
---------- VANCOUVER ----------
Segura, E.T., Cuello, M.E., Petriella, S., Orti, G. Antidiuretic responses to osmotic, ionic or volume stimulation of the brain in the unanesthetized toad, Bufo arenarum hensel. 1987;87(1):107-110.
http://dx.doi.org/10.1016/0300-9629(87)90432-4