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)

Oesophageal varices are found in the submucosa of the lower oesophageal sphincter (L.E.S.). Portagraphic studies after vasopressin administration showed occlusion of submucosal oesophageal varices and distension of the para-oesophageal veins. Oesophagography and endoscopy after administration of anticholinergics showed considerable dilatation of the submucosal oesophageal varices. Because vasopressin increases, and anticholinergics decrease, L.E.S. pressure it is suggested that L.E.S. pressure is an important factor in the development of submucosal oesophageal varices.
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PMID:How the lower oesophageal sphincter affects submucosal oesophageal varices. 8 85

DDAVP (1-desamino-8-d-arginine vasopressin), a synthetic analogue of vasopressin with prolonged half-life and high antidiuretic and low pressor activity, was given in a double-blind placebo-controlled trial to four patients with major affective illness. Three of four patients showed highly significant and consistent improvements in tests designed to measure the formation, encoding, and organisation of long-term trace events in memory. Two patients also showed a significant but less consistent amelioration of other depressive symptoms during DDAVP treatment. These findings implicate central vasopressin function in the processing of information and possibly other aspects of affective illness.
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PMID:Effects of 1-desamo-8-D-arginine vasopressin on behaviour and cognition in primary affective disorder. 9 78

We investigated the role of arginine-vasopressin (AVP) in maintaining the blood pressure of spontaneously hypertensive (SH) rats (stroke-prone strain) with established hypertension (22--28 weeks of age). In comparison with normotensive Wistar Kyoto (WKY) rats, plasma AVP concentrations of SH rats with benign hypertension (BH) were elevated twofold and in rats with severe or malignant hypertension (S-MH), fourfold. The height of the blood pressure was quantitatively related to plasma AVP in both BH and S-MH rats, the overall correlation coefficient being 0.66 (p less than 0.001). The intravenous injection of a specific AVP antiserum into conscious and unrestrained rats lowered blood pressure in 4 BH rats by 48 +/- 14 mm Hg and in 4 S-MH rats by 78 +/- 10 mm Hg and had only a marginal effect in 4 normotensive WKY rats. Infusion of saralasin did not lower blood pressure in WKY and BH rats and reduced blood pressure in only 2 of 7 S-MH rats tetsted (by 15 and 20 mm Hg). During AVP infusion the blood pressure of SH rats increased more (p less than 0.001) and heart rate fell much less (p less than 0.001) than in WKY rats. It is concluded that in SH rats with established hypertension, plasma AVP plays an important role in the maintenance of high blood pressure, while the renin-angiotensin system plays a minor or no role.
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PMID:Studies on the role of vasopressin in blood pressure control of spontaneously hypertensive rats with established hypertension (SHR, stroke-prone strain). 9 26

Superior mesenteric arteriography was performed following infusions of vasopressin, epinephrine and saline into the superior mesenteric arteries of dogs, pigs, rabbits and monkeys and compared with the well-known effects in human beings. Species-specific effects were noted and compared with the known differences in various vascular beds in human beings. In non-primate animals, vasopressin appeared to act at a more distal site than in primates, but with a similar decrease in superior mesenteric arterial flow. The results in primates were similar to those in human beings.
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PMID:Comparison of the effect of vasopressin infusions on the mesenteric arteries of different species. 9 42

Colchicine, podophyllotoxin and vinblastine have been found to inhibit the action of vasopressin on water movement in the toad urinary bladder. Tubulin is the major colchicine binding component of toad bladder epithelial cells, accounting for approximately 3.3% of the total cell protein. More than 99% of the tubulin is found in the soluble fraction after sonication, the remainder is in the particulate fraction. Similar to the characteristics of the binding of colchicine to tubulins from other sources, the binding of colchicine to toad bladder tubulin is temperature- and time-dependent, is inhibited competitively by podophyllotoxin (Ki= 5.5 x 10(-7)m), and has a binding constant of 1 X 10(6) liters/mole at 37 degrees. Binding activity decays according to first-order kinetics and is stabilized by vinblastine. The characteristics of the interactions of colchicine and podophyllotoxin with epithelial cell tubulin in vitro closely parallel the ability of these drugs to inhibit the response to vasopressin in vivo. These results, coupled with those of functional and morphological studies, support the view that the ability of these drugs to affect vasopressin-induced water movement across toad bladder epithelial cells is related to the depolymerization of cytoplasmic microtubules.
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PMID:Evidence for involvement of microtubules in the action of vasopressin in toad urinary bladder. II. Colchicine binding properties of toad bladder epithelial cell tubulin. 9 70

The brain vasculature, especially capillaries, may function in a very dynamic fashion under neuroendocrine control to regulate the internal environment of the brain. This is exemplified by new observations on the regulation of brain water permeability using the tracer H215O in vivo in adult rhesus monkeys. These studies reveal that brain water permeability, and hence brain water content and volume, are, at least in part, under the influence of the central noradrenergic system and centrally released vasopressin.
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PMID:Central neuroendocrine regulation of brain water permeability. 9 63

A study has been conducted to determine the ionic and metabolic requirements for full expression of the hydroosmotic response to antidiuretic hormone in the toad urinary bladder. By appropriate manipulation of incubation conditions it can be shown that there is a pool of serosal sodium necessary for a full hormone response. This serosal sodium pool is not related to the transepithelial sodium transport pool A full hydroosmotic response also requires serosal potassium; however, no specific anion requirement was demonstrated. Additionally, anaerobic or aerobic metabolism support a full hydroosmotic response equally well.
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PMID:Ionic and metabolic requirements for the hydroosmotic response to antidiuretic hormone in toad urinary bladder. 9 87

The hypothalamic magnocellular system of the adult female rhesus monkey is studied here, using immunoperoxidase technique and antisera to estrogen stimulated neurophysin (ESN), nicotine stimulated neurophysin (NSN), oxytocin (OT) and vasopressin (VP). These observations confirm and enlarge previous descriptions by others using Gomori techniques. It is apparent from this study that the magnocellular system spreads through a broader area than is generally accepted. A group of cells ventral to the head of the caudate nucleus and medial to the internal capsule is described. The general orientation of the nuclei and their tracts can only be appreciated when coronal, horizontal and sagittal sections are compared. Our observations suggest that the supraoptic nucleus is made up of a single group of cells that straddles the optic pathways, and is not divided in three segments, as it is generally described. It is also shown that the rostral extensions of the paraventricular and supraoptic nuclei merge above the optic chiasm. Cells containing ESN/OT and NSN/VP are evenly dispersed in the paraventricular nucleus but a topographical arrangement is present in the supraoptic nucleus. The magnocellular nuclei project to the organum vasculosum of the lamina terminalis, zona externa of the median eminence and pars nervosa of the pituitary gland. Reactive fibers were also seen within islets of cells from the pars intermedia located inside the pars nervosa. A globular structure containing small blood vessels surrounded by positive fibers was noticed protruding into the floor of the third ventricle, at the level of the median eminence.
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PMID:The hypothalamic magnocellular system of the rhesus monkey: an immunocytochemical study. 9 59

In a preliminary report we described the effects of rat prolactin on the incorporation of [14C]acetate into lipids by a cell line from a dimethylbenz(a)anthracene-induced rat mammary tumor. The characteristics of the response to prolactin were very similar to those described for the normal rat mammary gland; namely, insulin was required for full expression of the response, maximal activity was not seen until 36 hr after the addition of the hormones, and growth hormone was able to elicit the same response. However, we were unable to detect binding of 125I-labeled prolactin to these cells, and furthermore, other more purified prolactin preparations were inactive. Upon further investigation we discovered that the activity resided in a low-molecular-weight fraction of the rat prolactin B-1 preparation and was probably either vasopressin or oxytocin or both. These data suggest the possibility that vasopressin may play a role in rodent mammary tumorigenesis.
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PMID:Vasopressin stimulation of acetate incorporation into lipids in a dimethylbenz(a)anthracene-induced rat mammary tumor cell line. 10 Feb 17

Two patients with the syndrome of inappropriate secretion of antidiuretic hormone were studied in a metabolic ward during treatment with 1.2 g demeclocycline daily. In both patients, demeclocycline treatment led to increased renal water excretion with consequent correction of hyponatremia and hypo-osmolality. Three episodes of reversible deterioration in glomerular filtration rate developed in these patients. Each episode was accompanied by clinical evidence of extracellular fluid volume contraction, and on each occasion there was an inappropriate natriuresis with daily urinary sodium excretion remaining above 50 mEq. Although demeclocycline effectively reverses the electrolyte abnormalities of this syndrome, the potentially dangerous side effects that may develop exclude the routine usage of the drug.
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PMID:Renal function during treatment of inappropriate secretion of antidiuretic hormone with demeclocycline. 10 Apr 73


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