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)

Recent data have shown the role of urea in the urinary concentrating mechanism. We studied the effects of exogenous urea administration in hyponatremia associated with the syndrome of inappropriate secretion of antidiuretic hormone (SIADH). In 20 patients with SIADH, we observed a positive correlation between serum sodium and blood urea levels (r = 0.65; p less than 0.01). In one patient with an oat cell carcinoma and SIADH-induced hyponatremia, we observed the same positive correlation (r = 0.80; p less than 0.01) but also a negative one between the excreted fraction of filtered sodium and urinary urea (r = -0.67; p less than 0.001). The short-term administration of low doses of urea (4 to 10 g) resulted in correcting the "salt-losing" tendency of this patient. Longer term administration of high doses of urea (30 g/day) was attempted with the same patient as well as with a healthy volunteer subject with Pitressin-induced SIADH. in both patients, urea treatment lowered urinary sodium excretion as long as hyponatremia was significant (less than 130 meq/liter). Urea treatment also induced a persistent osmotic diuresis, allowing a normal daily intake of water despite SIADH. This was clearly shown during the long-term treatment of a third patient with SIADH who was taking 30 g urea/day during 11 weeks. It is concluded that urea is a good alternative in the treatment of patients with SIADH who presented with persistent hyponatremia despite the restriction of water intake.
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PMID:Treatment of the syndrome of inappropriate secretion of antidiuretic hormone by urea. 738 14

The syndrome of inappropriate secretion of antidiuretic hormone (SIADH) is characterized by hyponatraemia due to water retention resulting from the persistent release of antidiuretic hormone (vasopressin). It may occur in a variety of malignant and non-malignant conditions, in particular in association with oat cell carcinoma, pulmonary and cerebral diseases. We report the case of a male patient affected by melanoma of the right temporal region with brain metastasis who developed acute headache, drowsiness, nausea, vomiting and pathological reflexes. Clinical and laboratory investigations led us to the diagnosis of SIADH. Restriction of fluid intake obtained a good clinical improvement with normalization of laboratory alterations; after 2 months the patient experienced a new episode of SIADH which was promptly treated. As melanoma has been occasionally observed in association with SIADH it should be included in the list of tumours that can cause this particular syndrome.
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PMID:Syndrome of inappropriate secretion of antidiuretic hormone in a patient affected by metastatic melanoma. 976 13

Small cell carcinoma (SCC) occurs mostly in the lung, and in some patients is accompanied by production of ectopic hormones. Small cell carcinoma of the head and neck is very rare. We report 4 patients with SCC of the head and neck (larynx, tonsil, maxillary sinus, and parotid gland). The patient with SCC of the maxillary sinus demonstrated a high level of plasma serotonin and overexpression of parathyroid hormone; however, he did not show any related symptoms. The patient with SCC of the tonsil showed the syndrome of inappropriate secretion of antidiuretic hormone associated with antidiuretic hormone hyperproduction at the terminal stage. In the literature, 16 patients with SCC of the head and neck with ectopic hormone production have been reported. Antidiuretic hormone and adrenocorticotropic hormone were the hormones that caused clinical symptoms (paraneoplastic syndromes). We believe that the evaluation of hormonal syndromes is valuable for diagnosis and treatment.
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PMID:Immunohistochemical analysis of small cell carcinoma of the head and neck: a report of four patients and a review of sixteen patients in the literature with ectopic hormone production. 1120 14

Small cell carcinoma (SCC) of the female genital tract is rare, constituting less than 2% of all gynecologic malignancies. It occurs most frequently in the cervix but can also occur in the endometrium, ovary, fallopian tube, vagina, and vulva. SCC of the genital tract is microscopically indistinguishable from that of the lung. Neuroendocrine differentiation is often manifested by a histologic growth pattern, argyrophilia, ultrastructural demonstration of secretory granules, and expression of neuroendocrine markers. Patients with SCC of the female genital tract may be asymptomatic but usually present with localized pain, vaginal bleeding, abdominal bloating or a mass, or symptoms of metastasis disease to the liver, bone, lung, or regional lymph nodes. Ectopic Cushing's syndrome has been reported in SCC of the vagina, and hypercalcemia and inappropriate secretion of antidiuretic hormone have been noted with SCC of the ovary. In general, these tumors have an aggressive clinical course with a propensity for extensive local invasion and distant metastases. Therapy has included surgery, radiation, and chemotherapy akin to those regimens used for SCC of the lung. Although there are no randomized clinical trials, it appears that multimodality therapy is associated with the best results and is the treatment of choice for most patients. Despite aggressive therapy, however, the prognosis for SCC of the female genital tract is poor, with only a minority of patients enjoying a prolonged survival. Indeed, the majority of patients have an early demise with extensive distant disease. We review the clinical features, evaluation, and management of SCC of the female genital tract based on a comprehensive review of the literature.
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PMID:Small cell carcinoma of the female genital tract. 1727 Jun 67

Small cell neuroendocrine carcinoma of the paranasal sinuses is extremely rare. We present a case of small cell neuroendocrine carcinoma of the ethmoid sinuses associated with syndrome of inappropriate antidiuretic hormone secretion that resolved after chemotherapy, followed by a review of the literature.
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PMID:Small cell neuroendocrine carcinoma of the ethmoid sinuses presenting with generalized seizure and syndrome of inappropriate antidiuretic hormone secretion: a case report and review of literature. 1902 14

Small cell carcinoma of the uterine cervix is rare. It is estimated that 10% of patients with small-cell lung cancer have syndrome of inappropriate secretion of antidiuretic hormone (SIADH) and hyponatremia has been reported to be significantly associated with a poor prognosis. A proportion of small cell carcinoma of the uterine cervix exhibit neuroendocrine characteristics as revealed by immunohistochemistry, However, cases presenting typical symptoms due to SIADH are extremely rare. This report of the SIADH of the uterine cervix is a rare case in the small cell carcinoma of the cervix presenting with tumor-associated paraneoplastic syndrome.
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PMID:Small cell neuroendocrine carcinoma of the uterine cervix presenting with syndrome of inappropriate antidiuretic hormone secretion. 2439 24

Small cell carcinoma of the prostate (SCCP) is rare in clinical practice. It is often accompanied with the syndrome of inappropriate antidiuretic hormone secretion (SIADH). We present a case of SCCP with SIADH that was successfully treated with radiotherapy in the metastatic lymphnodes and prostate. The patient was an 81-year-old male with a castrate-resistant prostate cancer (CRPC) with invaded rectum and multiple metastases of pelvic lymphnodes. Hyponatremia was present. After radiotherapy, serum sodium increased and neuron-specific enolase (NSE) decreased. To our knowledge, this is the first case of SCCP with SIADH treated with radiotherapy to improve hyponatremia.
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PMID:Successful Radiotherapy for Advanced Small Cell Carcinoma of the Prostate with Syndrome of Inappropriate Secretion of Antidiuretic Hormone. 2856 32

Small cell carcinoma (SCC) of the bladder is a rare malignancy, representing less than 1% of bladder cancers diagnosed annually in the USA. In contrast to SCC of the lung, paraneoplastic syndromes are rarely documented in cases of extrapulmonary SCCs, particularly those of genitourinary origin. We present a case of SCC of the bladder presenting with paraneoplastic syndrome of inappropriate antidiuretic hormone, which resolved after treatment with sequential chemoradiation.
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PMID:Small cell carcinoma of the bladder presenting with paraneoplastic syndrome of inappropriate antidiuretic hormone. 3188 98


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