Resumen. DELGADO FERNANDEZ, María del Rosario; ROMERO RIVERO, Oscar Luis y DIAZ BORROTO, Abel. Central insipid diabetes: presentation of a case. Articulo en XML; Referencias del artículo; Como citar este artículo; SciELO Analytics; Enviar Neurohypophisis and Insipid Diabetes: A description of a case. Palabras clave: Neurohipófisis [Histología]; Diabetes Insípida [ Diagnóstico];. Existen dos tipos: diabetes insípida (DI) central, debida a la síntesis o liberación defectuosas de arginina vasopresina (AVP) desde el Artículos de referencia.
|Published (Last):||14 June 2006|
|PDF File Size:||4.51 Mb|
|ePub File Size:||14.7 Mb|
|Price:||Free* [*Free Regsitration Required]|
However, alterations in the regulation of aquaporin-2 have been observed in patients who receive prolonged treatment with lithium salts for example, treatment of bipolar disorderthe wrticulos sodium channel and the urea transporters UT-A1 and UT-Bwith lesion and loss of the main cells of the collecting tubule of the nephron, which can produce an irreversible lesion of the mechanism of urine concentration.
The defect of urine concentration is present from birth so that the clinical manifestations articculos be observed from the first weeks of life. Complications of transsphenoidal surgery. Acta Neurochir Suppl Wien Based on more in-depth mechanistic understanding, new therapeutic strategies are current being explored. Your feedback has been submitted successfully.
Sign up for a FREE trial. Todos ellos fueron inipida mediante un abordaje transesfenoidal. When adequate stimuli are received, the hormone is secreted together with neurophysin by means of exocytosis.
NEUROHIPOFISIS Y DIABETES INSIPIDA: PRESENTACION DE UN CASO
Also observed are vomiting, constipation and lack of weight or height gain due to decreased ingestion of nutrients as a result of the polydipsia. Patients present apathy and easy irritability, and their performance in school is poor. In these cases, mutations of the gene that codify the action of aquaporin-2 AQP2 have been observed, which conditions the lack of response of the principal cells of the collecting tubules of the nephron to the action of dixbetes AVP.
Other studies are directed at achieving the direct stimulation of the retained AVPR2 or directly stimulate the function of aquaporin-2 without the need of the participation diabetfs AVPR2.
Sheehan’s syndrome with central diabetes insipidus
Sheehan’s syndrome; central diabetes insipidus; water deprivation test. Plasma levels of AVP.
A description of a case. Essential insights into the molecular background and potential therapies for treatment. En la actualidad, como podemos ver en la tabla 2, ninguno de los pacientes con resecciones totales o subtotales ha necesitado RDTEF.
The latter in turns activates protein kinase A, which phosphorylates the preformed aquaporin-2 water channel located in the intracellular vesicles. See the new contents in http: Acquired nephrogenic diabetes insipidus can be caused by electrolyte imbalances e.
Currently there is sufficient evidence to continue treatment with hydrochlorothiazide and amiloride 0. Younger children do not tolerate amiloride well due to the persistent feeling of nausea, for which it is probable they would require the combination with indomethacin in the first years of life.
There was a problem providing the content you requested
The patient is treated with vasopresine 3 times weekly. The current state of affairs.
Register with an access code If you have been provided an access code, you can register it here: All six patients with graded 1 and 2 lesions and two patients with grade 4 lesions underwent a complete resection. Complications of transsphenoidal surgery: Preoperatively all daibetes were diagnosed by MRI and staged according to the Knosp classification.
The patient got better from her ID picture but she died because of her leukemia. Pituitary adenomas with parasellar invasion. The patient with neurogenic diabetes insipidus continuous line with black circles presented volume decrease articulls increase in urine osmolality after administration of vasopressin. Continuing navigation will be considered as acceptance of this use. Materials, methods and results.
Four patients were considered to be grade 1, two grade 2, diahetes grade 3 and sixteen grade 4. The variables considered for analysis include invasion and resection grades. The Knosp classification alone cannot predict the behavior of these tumors.
Surgical management of giant pituitary adenomas. Based on more in-depth mechanistic understanding, new therapeutic strategies are current being explored. The primary or congenital form is hereditary. Studies for the treatment of congenital nephrogenic diabetes insipidus have been recently done through drug stimulation, promoting the transport of the AVPR2 retained in the cytoplasm of the tubulorenal cell to the plasma membrane where it could develop its function.
Dichos defectos facilitan la invasividad del tumor hacia el interior del seno cavernoso. Estudio prospectivo de una serie de 23 casos. The procedure for the test is described below.
Frequently renal dysplasia and chronic renal failure is seen in inzipida patients. The disorder usually presents with anterior pituitary failure with preservation of posterior pituitary functions.
Clin Neurosurg ; These patients characteristically present with a less severe clinical form of diabetes insipidus. This may explain why indomethacin enhances the diabetds of the thiazides in patients with nephrogenic diabetes insipidus. The water deprivation test and response to vasopressin test results indicated central diabetes insipidus. It has been suggested that the apparent paradoxical effect of hydrochlorothiazide occurs due to, in the absence of vasopressin arginine, the luminal hydrochlorothiazide increases the osmotic and dilutional permeability of water in the collecting tubules of the nephron that cross the internal renal medulla through independent stimulation of AVP of aquaporin Se continuar a navegar, consideramos que aceita o seu uso.
Se is referred by the hematologist to the endocrine valoration and after measuring density and diuresis within 48 hours, a low density plyuric polidipsic syndrome is diagnosed.