scholarly journals Water Metabolism in Preterm Infants during the first Week of Life and its Regulation by Arginine-Vasopressin(AVP)

1986 ◽  
Vol 20 (11) ◽  
pp. 1181-1181
Author(s):  
H Stegner ◽  
R Henkel ◽  
J C Commentz ◽  
H H Hellwege ◽  
R P Willig
Keyword(s):  
Preterm Infants ◽  
Arginine Vasopressin ◽  
Water Metabolism

Urinary excretion of digoxin-like immunoreactive factor and arginine-vasopressin in hyper- and hypo-thyroid rats

1991 ◽  
Vol 81 (s25) ◽  
pp. 471-476 ◽  
Author(s):  
Felix Vargas ◽  
Maria J. Baz ◽  
Juan de D. Luna ◽  
Jesus Andrade ◽  
Esteban Jodar ◽  
...  
Keyword(s):  
Urinary Excretion ◽  
Hypertonic Saline ◽  
Arginine Vasopressin ◽  
Water Deprivation ◽  
Water Metabolism ◽  
Rat Urine ◽  
Urinary Levels ◽  
Vasopressin Secretion ◽  
Response To Water ◽  
Osmotic Stimuli

1. Urinary excretion of digoxin-like immunoreactive factor and arginine-vasopressin and other parameters related to salt and water metabolism were studied in hyper- and hypo-thyroid rats after different tests. 2. Urinary excretion of arginine-vasopressin was increased in hyperthyroid and reduced in hypothyroid rats with respect to controls, in response to water deprivation or a hypertonic saline load. 3. Control and hypothyroid rats showed the highest urinary excretion of digoxin-like immunoreactive factor after a hypertonic saline load. However, hyperthyroid rats had the highest urinary levels of digoxin-like immunoreactive factor under normal conditions. 4. From these results it is suggested that: (a) hyper- and hypo-thyroid rats exhibit hyper- and hypo-responsiveness of arginine-vasopressin secretion to osmotic stimuli, respectively; (b) an unidentified digoxin-like immunoreactive factor measured in unextracted rat urine may be related to diuresis and natriuresis in control and hypothyroid rats; however, dissociation between this factor and natriuresis is observed in hyperthyroid rats.

Effect of the vasopressin antagonist d/CH2/5Tyr/Et/VAVP on the antidiuretic action of exogenous and endogenous vasopressin

1984 ◽  
Vol 106 (1) ◽  
pp. 52-55 ◽  
Author(s):  
F. A. László ◽  
S. Csáti ◽  
L. Baláspiri
Keyword(s):  
Diabetes Insipidus ◽  
Propionic Acid ◽  
Arginine Vasopressin ◽  
Brattleboro Rats ◽  
Water Metabolism ◽  
Vasopressin Antagonist ◽  
Osmotic Stimulus ◽  
Antidiuretic Action

Abstract. The effect of [1-(β-mercapto-β,β-cyclopentamethylene-propionic acid),2-0-ethyltyrosine,4-valine]-arginine vasopressin on the water metabolism was studied in rats. The compound decreases the antidiuretic action of exogenous vasopressin in Brattleboro rats; in rats without diabetes insipidus it causes temporary polyuria and eliminates the response of antidiuresis to an osmotic stimulus. The results indicate that this compound can block the antidiuretic action of both exogenous and endogenous vasopressin.

Correlation of Cigarette-Induced Increase in Serum Nicotine Levels with Arginine Vasopressin Concentrations in the Syndrome of Self-Induced Water Intoxication and Psychosis (SIWIP)

1986 ◽  
Vol 31 (2) ◽  
pp. 108-111 ◽  
Author(s):  
W.V.R. Vieweg ◽  
J.J. David ◽  
W.T. Rowe ◽  
M.J. Peach ◽  
J.D. Veldhuis ◽  
...  
Keyword(s):  
Arginine Vasopressin ◽  
Urine Volume ◽  
Urine Osmolality ◽  
Depressive Illness ◽  
Water Intoxication ◽  
Manic Depressive Illness ◽  
Water Metabolism ◽  
Water Drinking ◽  
Manic Depressive ◽  
Plasma Arginine

Ten patients [9 men and 1 woman; mean age 42.4 ± 8.5 (± SD) years] who were smokers and who suffered the complications of self-induced water intoxication and psychosis (SIWIP) (8 patients with schizophrenic disorders, 1 patient with manic-depressive illness, 1 patient with dementia) are reported. Each patient underwent serial determinations of parameters of water metabolism including plasma and urine osmolality and plasma arginine vasopressin (AVP). The syndrome of inappropriate antidiuresis (SIAD) was found in each patient. Because of the reported effect that cigarette smoking has on anti-diuresis, we correlated serum nicotine (NIC) levels with plasma and urine osmolality, AVP, and 24-hour urine volume (24°-UV). We found no relationship between NIC and plasma or urine osmolality, AVP, or 24°-UV. In the presence of SIWIP and SIAD, we infer the limbic-hypothalamic neurotransmitters in these psychotic patients are sufficiently powerful in stimulating both compulsive water drinking and inappropriate release of AVP so as to overshadow any effects that NIC may have on water metabolism.

AUGMENTATION OF VASOPRESSIN ANTIDIURESIS BY PROLACTIN WITH A NOTE ON THE CONTAMINATION OF INTERNATIONAL STANDARD PROLACTIN

1977 ◽  
Vol 75 (3) ◽  
pp. 435-436 ◽  
Author(s):  
A. K. WATERS
Keyword(s):  
Medical School ◽  
Arginine Vasopressin ◽  
Wistar Rats ◽  
Hospital Medical School ◽  
Water Metabolism ◽  
International Standard ◽  
Male Wistar Rats ◽  
Infusion Fluid ◽  
Anaesthetized Rat ◽  
Antidiuretic Action

Department of Physiology, Charing Cross Hospital Medical School, London, W6 (Received 7 April 1977) It has been reported (Horrobin, Burstyn, Lloyd, Durkin, Lipton & Muiruri, 1971; Buckman & Peake, 1973; Wallin & Lee, 1976) that prolactin affects salt and water metabolism. To assess any interaction of the antidiuretic hormone arginine-vasopressin (AVP) and prolactin, four experiments were performed. The antidiuretic action of AVP was measured by the standard AVP bioassay method using the water-loaded ethanol-anaesthetized rat described by Jeffers, Livesey & Austin (1942) with the minor modifications of Forsling, Jones & Lee (1968). Male Wistar rats (150-200 g) were used with at least six preparations for each experiment. When stable antidiuretic responses to standard AVP (3rd International Standard, 1957, National Institute for Biological Standards, London) were obtained, the infusion fluid was changed to one containing the appropriate hormone for the experiment and the effect of AVP within the succeeding hour compared

Auditory Arousal in Preterm Infants

1984 ◽  
Vol 11 ◽  
pp. 3-9 ◽  
Author(s):  
Kay Lynn Copriviza ◽  
Cynthia Gayle Lima
Keyword(s):  
Preterm Infants
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