Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UNIPROT:P01185 (vasopressin)
 23,126 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A case of syndrome of inappropriate secretion of antidiuretic hormone (SIADH) associated with Ramsay Hunt syndrome is reported. A 59-year-old man was admitted to our department for treatment of left facial pain that had persisted for three days. A left renal tumor had been diagnosed and a radical nephrectomy had been performed two months earlier. On admission, vesicular lesions were found in the left external auditory canal and ear lobe. Additionally found were left facial nerve palsy and hearing loss. Acyclovir 5 mg/kg, three times per day, was started. Five days after admission, the patient became confused and disorientated. Further investigation revealed hyponatremia 118 mEq/l, low serum osmolality, high urine osmolality, normal renal function, normal adrenal and thyroid hormones, and high plasma vasopressin 30 pg/ml. Although cerebrospinal fluid (CSF) examination revealed a mild elevation in protein and cells, no malignant cells were present and bacterial examinations were negative. Antibodies to varicella-zoster virus (VZV) in both IgG and IgM were present in high titers not only in the serum but also in the CSF. Intravenous hypertonic saline and water restriction were started, and the patient's sensorium was improved in accordance with the increase in serum sodium concentration. These results indicate that the hyponatremia in this case was due to SIADH and that SIADH was caused by an increased release of vasopressin probably because of the infection of VZV in the central nervous system.
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PMID:Syndrome of inappropriate secretion of antidiuretic hormone (SIADH) associated with Ramsay Hunt syndrome: report of a case and review of the literature. 254 53

Acyclovir-associated renal dysfunction is difficult to study in humans because it occurs in patient populations who are generally receiving multiple medicines concurrently and dysfunctions occur infrequently. We studied the effects of two regimens of acyclovir treatment, a short-term high dose (210 mg/kg/day for 43 hr) via constant infusion and a chronic lower dose by intermittent infusion (15 mg/kg, 3 times/day for 28 days), on selected renal functions in dogs. Urine concentrating capacity as compared to base-line and controls declined during both the short-term (40% decline) and chronic treatments (36% decline). The persistence of the concentrating deficit in the presence of stimulation with vasopressin suggested that the defect resided in the renal response to vasopressin. Glomerular filtration rates significantly decreased during the acute high-dose treatment (from 104 +/- 15 to 87 +/- 11 ml/min) but not during the chronic low-dose treatment. Both acyclovir treatments were associated with a small but significant decline (approximately 10% for both studies) in the plasma potassium concentrations although an increase in urine potassium clearance could not be demonstrated. We conclude that acyclovir can cause renal dysfunction in healthy animals at plasma concentrations higher but comparable to those achieved clinically. Although both treatment regimens decreased renal function, the shorter high-dose regimen which maintained acyclovir plasma concentrations was more detrimental than the longer exposure to a lower dose of the drug given intermittently. The data suggest that renal dysfunction is not related to a rare sensitivity, as all acyclovir-treated animals showed subtle decrements in renal function.
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PMID:Effects of acute and chronic acyclovir on canine renal function. 272 37

Three patients with the syndrome of inappropriate secretion of antidiuretic hormone (SIADH) during the course of disseminated Herpes Varicella-Zoster (HVZ) virus infections are reported. In one patient and two previously reported patients, SIADH occurred at or shortly after admission, prior to antiviral drug therapy. In two patients and one previously reported patient, SIADH began or hyponatremia worsened after vidarabine therapy was begun. Therefore, SIADH may occur during the course of untreated, disseminated HVZ infection. However, the relatively high fluid volume required to dilute vidarabine may play a role in the development of the clinical and laboratory manifestations of SIADH, in patients receiving the drug. Physicians should avoid excess fluid intake and monitor serum sodium carefully when caring for patients with disseminated HVZ infections. Doses of vidarabine greater than 10 mg/kg/day may increase the likelihood of SIADH. Acyclovir therapy was not associated with worsening of hypotonic hyponatremia in our patients.
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PMID:SIADH during disseminated Herpes varicella-zoster infections: relationship to vidarabine therapy. 394 67