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)

Studies were carried out on the right auricle of the right atrium of two-day-old rats placed in a special chamber perfused with Ringer-Locke solution at room temperature. The contractions rate of the auricle was counted with the use of a stereomicroscope. The following amino acids dissolved in Ringer-Locke solution were tested: glycine, glutamic acid, serine, alanine, aspartic acid, gamma aminobutyric acid, leucine, and peptides: vasopressin and oxytocin. Glutamic acid in a concentration of 10(-1) mol/l induced a decrease in auricle contraction rate by 25%. Alanine in concentration 10(-2) mol/l induced a decrease by 22%. Leucine in concentration 10(-2) mol/l induced a decrease by 16% and in concentration ten times higher a decrease by 28%. The other tested amino acids, vasopressin and oxytocin in concentration used had no influence on the rate of contraction frequency of the isolated auricle.
Acta Physiol Pol
PMID:The influence of amino acids, vasopressin and oxytocin on spontaneous contraction of the right auricle of the right atrium of two-day-old rats in vitro. 654 86

The content of vasopressin in the neurohypophysis as well as the content of oxytocin in both hypothalamus and neurohypophysis were found to decrease considerably 8 weeks following pinealectomy in male rats. It may be, therefore, concluded that the pineal body is in some way involved in the regulatory mechanisms for vasopressinergic and oxytocinergic neurons.
Acta Physiol Pol
PMID:The content of vasopressin and oxytocin in the hypothalamus and neurohypophysis of pinealectomized male rats. 663 29

In the first part of the study penetration of blood-brain barrier by lysine vasopressin (LVP) was studied. After i.p. injection 125J-LVP or its large fragments appeared in the hypothalamus, hippocampus, tuberculum olfactorium and brain stem. In these structures the effect of i.p. injected LVP on noradrenaline level and turnover rate was studied. LVP produced an increase of noradrenaline level in the hypothalamus, hippocampus and tuberculum olfactorium. In the brain stem no marked changes in noradrenaline content were found. In all the examined brain structures LVP slowed down turnover rate of noradrenaline.
Acta Physiol Pol
PMID:Effect of intraperitoneally injected lysine vasopressin on noradrenaline turnover in certain brain regions of the rat. 682 Nov 83

The influence of clonidine, guanethidine and furosemide on the development of arterial hypertension was studied in rats with hypertension induced by repeated administration of lysine vasopressin. It was found that these drugs administered during long time periods together with lysine vasopressin prevented the development of arterial hypertension. When any of these drugs was given in combination with vasopressin plasma renin activity failed to rise and the level and turnover of catecholamines in rat brain were unchanged.
Acta Physiol Pol
PMID:Effects of clonidine, guanethidine and furosemide on the development of vasopressin hypertension in rat. 700 88

The influence of intravenous injection of various doses of synthetic oxytocin, arginine-vasopressin and lysine-vasopressin on intramammary pressure of ewes was tested. A single injection caused a short-term intramammary pressure increase. The intramammary pressure curves for the tested hormones were similar. However, big doses of oxytocin resulted in a different type of response, consisting in successive contractions of decreasing magnitude. A positive relationship between lg oxytocin doses and intramammary pressure at doses from 10 to 100 mU was shown. This relationship for arginine-vasopressin was at 200 to 500 mU, and that of lysine-vasopressin at 200 to 1 000 mU. The latency period between the moment of hormone injections and the rise in intramammary pressure decreased when bigger doses were used. The milk-ejection activity of arginine-vasopressin was only 14,5% of oxytocin activity. The activity of lysine-vasopressin was 10,2% respectively.
Pol Arch Weter 1982
PMID:[Effect of synthetic hormones of the neurohypophysis on the mammary glands of sheep]. 718 80

During equilibrated water metabolism a single dose of dihydroergotamine (DHE) increased vasopressin release from the neurohypophysis; it had no effect on oxytocin content in the hypothalamus and neurohypophysis. After two days of dehydration DHE somewhat restrained the decrease of oxytocin in the hypothalamus; the release of vasopressin from the neurohypophysis was then increased. Under severe dehydration, i.e. under conditions of potent osmoreceptor stimulation, DHE influenced the vasopressin content neither in the hypothalamus nor in the neurohypophysis, but in some way it intensified oxytocin depletion in the neurohypophysis. Following two days of rehydration DHE somewhat restrained the renewal of vasopressin in the hypothalamus. No changes of oxytocin in the hypothalamus could be demonstrated at that time; in the neurohypophysis DHE intensified vasopressin repletion, but inhibited oxytocin repletion. Following four and eight days of rehydration DHE had no influence on vasopressin repletion rate in the hypothalamus and neurohypophysis. At that time oxytocin repletion in the neurohypophysis was increased; in the hypothalamus it was not affected by DHE. It is concluded that the response of the hypothalamo-neurohypophyseal system to alpha-adrenergic blockade-as brought about by dihydroergotamine treatment-seems to be dependent on the actual state of water metabolism. Impulses from the osmoreceptors may be therefore of some important in modifying the change in vasopressin and oxytocin release resulting from inhibition of alpha-adrenergic transmission through neural chains including units susceptible to dihydroergotamine.
Acta Physiol Pol
PMID:The vasopressor and oxytocic activities of the hypothalamus and neurohypophysis are influenced by inhibited alpha-adrenergic transmission during dehydration and subsequent rehydration in the white rat. 734 20

This study aimed to assess the effect of anaemia on volume related hormones in dialyzed patients with chronic uraemia. Three groups of subjects were examined. The first one comprised 34 hemodialyzed patients with severe anaemia (haematocrit value < 28%). 17 patients were treated with EPO for 1 year (EPO group) while the other 17 patients did not receive rHuEPO (no-EPO group) but were intensively monitored biochemically and clinically as patients of the EPO group. The second group (HD) consisted of 12 hemodialyzed uraemic patients with a Hct > 30% without rHuEPO treatment, while the third one comprised 15 healthy subjects. In patients of the EPO and no-EPO group plasma renin activity (PRA), plasma concentration of aldosterone (Ald) atrial natriuretic peptide (ANP and vasopressin (AVP) were assessed before (0) and after 3, 6, 9 and 12 months of clinical monitoring, while in patients of the HD group and in normals the above mentioned parameters were estimated only once. EPO treatment improved significantly the Hct value already after three months of therapy. No significant changes in PRA and plasma concentrations of Ald, ANP and AVP in the noEPO group were noticed during 12 months of monitoring. In contrast EPO treatment induced a significant, although transitory decrease of PRA, Ald and AVP, but an increase of plasma ANP. No influence of rHuEPO therapy on blood pressure was noticed.(ABSTRACT TRUNCATED AT 250 WORDS)
Pol Arch Med Wewn 1994 Aug
PMID:[Does long-term human recombinant erythropoietin (rHuEPO) influence secretion of hormones regulating volume and pressure of arterial blood?]. 780 May 84

The amount and distribution of the neurosecretory material in the hypothalamo-neurohypophyseal system were investigated in rats sacrificed 24 hours, 3 or 14 days after single intragastric administration of 2,4-D acid or physiological solution. The amount of the neurosecretory material increased in the whole system after 24 hours and then it decreased on the 3rd and on the 14th day after administration of 2,4-D acid.
Ann Med Univ Bialyst Pol 1993
PMID:Morphological pattern of the hypothalamo-neurohypophyseal system in acute intoxication with 2,4-dichlorophenoxyacetic acid [2,4-D]. 792 82

This paper reviews the recent progress in the understanding of the neurobiology of the eating disorders. The analysis of the biochemical abnormalities present in the patients with bulimia nervosa indicates the decrease of central serotonin and noradrenalin activity, elevation of the levels of cerebrospinal fluid peptide YY, alterations of the endogenous opioids and also reduction of peripheral cholecystokinin levels. As these studies were performed on patients who were actively binging and purging it is conceivable that the above abnormalities can results from a pathological feeding pattern. It is also suggested that the reduction of central serotoninergic activity is the stable, trait-related dysregulation of neurotransmitter system activity. In patients with anorexia nervosa the endocrine disturbances of the hypothalamic-pituitary-ovarian and hypothalamic-pituitary-adrenal axes were thoroughly studied. Underweight anorectic patients have been found to have elevations of cerebrospinal fluid level of neuropeptide Y, corticotropin releasing hormone and vasopressin as well as reductions of beta-endorphin and oxytocin level. However, most of the neuropeptide alterations normalize following weight recovery. The only exception is a persistent increase of central serotonin activity postulated to be responsible for the obsessive-compulsive personality traits and disturbed eating behaviors found in these patients.
Psychiatr Pol
PMID:[Selected issues of biological aspects of eating disorders]. 799 11

The aim of the study was to investigate to what extent inhibition of nitric oxide (NO) formation, cyclooxygenase and converting enzyme activities and vasopressin V1 receptors blockade affects the cardiovascular system in conscious, freely moving normotensive Wistar-Kyoto (WKY) and spontaneously hypertensive (SHR) rats. The experiments were performed on 33 WKY and on 33 SHR. In series 1 (8 WKY and 8 SHR) animals received bolus injection of N omega-nitro-L-arginine - NLA (10 mg/kg), in series 2 (6 WKY and 6 SHR) bolus injection of indomethacin (10 mg/kg). In series 3 (8 WKY and 8 SHR) the animals received captopril as initial bolus (1 mg/kg) followed by constant infusion (1 mg/kg/min), in series 4 (11 WKY and 11 SHR) vasopressin V1 receptor antagonist 1-(1-mercapto-4-methylcyclohexaneacetic acid)-8-arginine-vasopressin (MeCAAVP) was infused (1.52 micrograms/kg/min). In series 1 in WKY NLA elicited a long-lasting, significant increase in mean blood pressure (max 46 +/- 3 mmHg at 40 min). In SHR mean blood pressure raises were not significant (max 22 +/- 6 mmHg). In series 2, both in WKY and SHR, indomethacin elicited only transient, nonsignificant increases in mean blood pressure. In series 3, the mean blood pressure fall during the captopril infusion was more pronounced in SHR than in WKY (45 +/- 2 mmHg vs 13 +/- 2 mmHg respectively). In series 4 vasopressin V1 receptor blockade caused a nonsignificant fall in mean blood pressure, both in WKY and SHR.(ABSTRACT TRUNCATED AT 250 WORDS)
Pol J Pharmacol
PMID:Blood pressure responses to substances interfering with nitric oxide formation, cyclooxygenase and converting enzyme activities and vasopressin V1 receptors blockade in conscious spontaneously hypertensive and normotensive rats. 800 Apr 47


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