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PubMedDate not supplied

Water transport in the kidney and nephrogenic diabetes insipidus.

Nephrogenic diabetes insipidus is caused by an inability of the kidney to concentrate urine despite adequate concentration of vasopressin in blood and is characterized by polyuria, polydipsia, and hyposthenuria in the presence of plasma hyperosmolality. Nephrogenic diabetes insipidus is the result of defects in water homeostasis in the kidney. Nephrogenic diabetes insipidus occurs when the kidneys cannot or do not respond to vasopressin. There are 2 categories of nephrogenic diabetes insipidus. Congenital nephrogenic diabetes insipidus is a rare, inherited, irreversible cause of polyuria and polydipsia in humans that is even rarer in animals. Acquired nephrogenic diabetes insipidus is more common and is often secondary to illness or medication that interferes with the action of vasopressin in the renal tubules. Unlike congenital nephrogenic diabetes insipidus, acquired or secondary nephrogenic diabetes insipidus is often reversible with correction of the associated or causative problem.

Animals↗
PubMed1994

Acute leukemia relapse presenting as central diabetes insipidus.

BACKGROUND: Diabetes insipidus due to leukemic involvement of the central nervous system has been described previously in several patients. Although the timing of the diabetes insipidus onset in relation to the leukemia is variable, it has not been described previously as the first manifestation of leukemia relapse. METHODS: Two cases of leukemia relapse presenting as central diabetes insipidus are described and the literature is reviewed. RESULTS: Clinical data of 29 of the 39 reported cases were available. The median age was 46 years, with no gender predominance. Seventy-three percent had acute nonlymphocytic leukemia, and deletion of chromosome 7 or monosomy 7 was the predominant cytogenetic abnormality. No temporal relation between the onset of diabetes insipidus and the leukemia was found. In none of the previously reported cases was diabetes insipidus the first manifestation of the leukemia recurrence. CONCLUSIONS: The temporal relationship between diabetes insipidus and leukemia is inconsistent. The former may precede, follow, or present concomitantly with the latter. Two cases of diabetes insipidus as the presenting sign of leukemia relapse are reported.

Adult↗
PubMed2006

[Nephrogenic diabetes insipidus].

Nephrogenic diabetes insipidus which can be inherited or acquired, is characterized by an inability to concentrate urine despite normal or elevated plasma concentrations of the antidiuretic hormone, arginine-vasopressine (AVP). Polyuria, with hyposthenuria and polydipsia are the cardinal clinical manifestations of the disease. Hypercalcemia, hypokaliemia, lithium administration and chronic renal failure are the principal causes of acquired nephrogenic diabetes insipidus. About 90 percent of patients with congenital nephrogenic diabetes insipidus are males with X-linked recessive nephrogenic diabetes insipidus who have mutations in the arginine-vasopressin receptor 2 (AVPR2) gene that codes for the vasopressin V2 receptor. The gene is located in chromosome region Xq28. In about 10 percent of the families studied, congenital nephrogenic diabetes insipidus has an autosomal recessive or autosomal dominant mode of inheritance. In these cases, mutations have been identified in the aquaporin-2 gene (AQP2), which is located in chromosome region 12q13 and codes for the vasopressin-sensitive water channel. Other inherited disorders with mild, moderate or severe inability to concentrate urine include Bartter's syndrome and Cystinosis. Identification of the molecular defect underlying congenital nephrogenic diabetes insipidus is of immediate clinical significance because early diagnosis and treatment of affected infants can avert the physical and mental retardation associated with episodes of dehydration.

Diabetes Insipidus, Nephrogenic↗
PubMed1996

Transient central diabetes insipidus in the setting of underlying chronic nephrogenic diabetes insipidus associated with lithium use.

Nephrogenic diabetes insipidus (NDI) is a well-documented complication of lithium use. The association of central diabetes insipidus (CDI) with lithium use is rare. We report a patient receiving chronic lithium therapy who presented with a transient CDI occurring in the setting of underlying chronic NDI. To the best of our knowledge, this is the first case of lithium-associated CDI and NDI presenting concurrently. Potential mechanisms regarding the pathophysiology of lithium-associated CDI are discussed. This case emphasizes the importance of the evaluation of lithium-associated polyuria with a direct measurement of plasma vasopressin, interpreted with simultaneous plasma and urine osmolality to secure the correct diagnosis and ensure appropriate therapeutic management.

Aged↗
PubMed1998

[Molecular biological studies on patients with nephrogenic diabetes insipidus].

Nephrogenic diabetes insipidus is a rare, mostly X-linked recessive disorder characterised by renal tubular resistance to the antidiuretic effect of arginine vasopressin. The gene responsible for the X-linked nephrogenic diabetes insipidus, the G-protein-coupled vasopressin V2-receptor, has been localised on the Xq28 region. In this study four patients were investigated with molecular genetic methods. Diagnosis was based on clinical symptoms and lack of increase of urinary osmolality after administration of the arginine vasopressin, or the synthetic vasopressin analogue DDAVP. Three different mutations (C112R, N317K, W323S) were found in three patients, while no mutation was detected in the fourth patient. Since earlier histiocytosis X has been diagnosed in this patient, this patient has probably central diabetes insipidus. Although the main symptoms of the disease can be found in all patients, there are significant differences in the seriousness of the symptoms as well as in some other symptoms. The explanations might be the different mutations in the V2-receptor gene and the various other genetic and environmental factors; these findings provide further evidence that X-linked nephrogen diabetes insipidus results from defects in the V2-receptor gene.

Diabetes Insipidus, Nephrogenic↗
PubMed1991

[Transient polyuria in pregnancy in diabetes insipidus and gestational diabetes].

Two pregnant women developed overt polyuria (up to 11 l/day) and polydipsia during their second and third trimesters of pregnancy. In one patient hydronephrosis was present. Both patients suffered from mild gestational diabetes mellitus. Plasma sodium was 145 and 162 mmol/l. Polyuria and urinary hypo-osmolality responded well to desmopressin acetate. After delivery, polyuria and polydipsia disappeared in one patient and significantly improved in the other. Infusion of hypertonic saline one and two weeks respectively after delivery led to plasma hyper-osmolality (294 mosmol/kg and 305 mosmol/kg) without detectable stimulation of arginine vasopressin (AVP). Anterior pituitary function was normal. No stimulation of AVP occurred following insulin-induced hypoglycemia. AVP plasma disappearance after i.v. pulse injection of 1 microgram AVP as well as AVP plasma concentration after continuous infusion of 10 ng AVP/min was studied two weeks after delivery in one patient. The results suggested markedly elevated degradation of AVP compared to control subjects, probably due to an increased vasopressin activity. Eight months after delivery, hypertonic saline infusion in one patient led to a plasma-osmolality of 312 mosmol/kg without stimulation of AVP. In the second patient, AVP was not detectable (less than 0.2 pg/ml) six months after delivery when plasma osmolality was 290 mosmol/kg. Our studies demonstrate that a subclinical compensated diabetes insipidus was preexistent in both patients. Exacerbation occurred due to an increased AVP-clearance and presumably due to the hemodynamic and hormonal alterations during pregnancy, including a mild gestational diabetes mellitus.

Adult↗
PubMed1986

Characterization of a new rodent model of diabetes insipidus: the Roman high avoidance rat homozygous for diabetes insipidus.

These experiments were designed to characterize the nature and extent of diabetes insipidus present in a new model of genetic vasopressin (VP) deficiency, the Roman high avoidance rat homozygous for diabetes insipidus (RHA: di/di strain). The new strain was developed from an initial cross between Long-Evans derived Brattleboro (LE:di/di) rats and normal Roman high avoidance (RHA: +/+) rats, and has been bred to be congenic with the parent RHA: +/+ strain. RHA: di/di rats exhibited polydipsia, excreted dilute urine, and exhibited elevated plasma osmolality. RHA: di/di rats shows a similar urinary response to dehydration as LE: di/di rats. VP was undetectable by radioimmunoassay in the serum, brain, and neurohypophysis of RHA: di/di rats. VP-neurophysin containing cells were not observed in the brains of RHA: di/di rats upon immunocytochemical analysis. Thus, the new RHA: di/di strain exhibits essentially the same profile of diabetes insipidus as the LE: di/di rat. The congenic relationship between RHA: di/di and RHA: +/+ rats makes the RHA: di/di rat a useful model under circumstances where genetic variables unrelated to VP deficiency may confound the interpretation of data.

Animals↗
PubMed1988

Korsakoff's psychosis due to massive beer intake provoked by diabetes insipidus.

Posttraumatic diabetes insipidus, acute pancreatitis, and Wernicke's encephalopathy and Korsakoff's psychosis in a 33-year-old white male alcohol abuser resulted in near-fatal cardiovascular collapse. The Wernicke's encephalopathy and Korsakoff's psychosis resulted from drinking massive quantities of beer to satisfy the thirst induced by diabetes insipidus. Although the diabetes insipidus was controlled with vasopressin, and the need for vasopressin resolved two months after diagnosis, the Wernicke-Korsakoff syndrome had not resolved by six months.

Acute Disease↗
PubMedDate not supplied

DIABETES insipidus.

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Diabetes Insipidus↗
PubMed1950

DIABETES insipidus.

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Diabetes Insipidus↗
PubMed1996

Molecular and cellular defects in nephrogenic diabetes insipidus.

Nephrogenic diabetes insipidus is a rare genetic disorder characterized by insensitivity of the distal nephron to the antidiuretic effect of arginine vasopressin. Two different molecular defects underlying this disease have so far been identified. Mutations in the gene encoding the vasopressin type-2 receptor cause the X-chromosomal form of the disease, whereas mutations in the gene encoding the vasopressin-dependent water channel aquaporin-2 are responsible for the autosomal recessive, and (in some cases) an autosomal dominant type of the disease. Functional analysis of naturally occurring mutations in the vasopressin type-2 receptor and aquaporin-2 have increased the insight into the structure and function of both proteins and have led to substantial progress in understanding the cellular mechanisms underlying the concentrating ability of the kidney. Some female carriers of a vasopressin type-2 receptor mutation may show complete manifestation of nephrogenic diabetes insipidus, probably as a result of skewed X-inactivation. The recent findings in nephrogenic diabetes insipidus research have considerable impact for diagnosis of and genetic counselling for this disease.

Amino Acid Sequence↗
PubMed2000

Cranial irradiation--an unusual cause for diabetes insipidus.

Central diabetes insipidus frequently occurs due to tumours in the region of pituitary or hypothalamus or following surgical trauma to these regions. Rarely it has been reported following cranial irradiation. We report the case of a middle aged woman who underwent surgical removal of a frontal capillary hemangioblastoma and received cranial irradiation. She presented ten months later with features of diabetes insipidus which was confirmed to be of central origin. She responded well to desmopressin nasal spray. Radiation induced damage to the hypothalmo-pituitary axis presents usually with anterior pituitary hormone deficiencies, most commonly that of growth hormone. Presentation as central diabetes insipidus is very uncommon.

Cerebellar Neoplasms↗