The response of vasopressin and blood pressure to hemorrhage in SHR and WKY rats. 1984

R W Rockhold, and J T Crofton, and D P Brooks, and L Share

The effects of hemorrhage on plasma vasopressin levels and blood pressure were examined in conscious, age-matched spontaneously hypertensive (SHR) and normotensive Wistar-Kyoto (WKY) rats. Graded hemorrhage was produced by bleeding the rats at 10 min intervals over a total period of 65 min, to produce cumulative blood losses equivalent to 0.5, 1.0, 1.5, 2.0 and 3.0% of body weight in each animal. Hemorrhage progressively lowered blood pressure and increased plasma vasopressin levels in both SHR and WKY. At cumulative reductions in blood volume equivalent to 1.0 to 3.0% of body weight, there were greater reductions in arterial pressure and greater increases in plasma vasopressin concentrations in SHR than WKY. Basal blood volume in SHR was 10% lower than in WKY. In SHR, the greater vasopressin response to hemorrhage may have been due in part to the greater fall in arterial pressure. Although the lower blood volume may have contributed to the latter, derangements in baroreceptor function may also have been important.

UI MeSH Term Description Entries
D008297 Male Males
D010953 Plasma Volume Volume of PLASMA in the circulation. It is usually measured by INDICATOR DILUTION TECHNIQUES. Blood Plasma Volume,Blood Plasma Volumes,Plasma Volumes,Volume, Blood Plasma,Volume, Plasma,Volumes, Blood Plasma,Volumes, Plasma
D011919 Rats, Inbred Strains Genetically identical individuals developed from brother and sister matings which have been carried out for twenty or more generations or by parent x offspring matings carried out with certain restrictions. This also includes animals with a long history of closed colony breeding. August Rats,Inbred Rat Strains,Inbred Strain of Rat,Inbred Strain of Rats,Inbred Strains of Rats,Rat, Inbred Strain,August Rat,Inbred Rat Strain,Inbred Strain Rat,Inbred Strain Rats,Inbred Strains Rat,Inbred Strains Rats,Rat Inbred Strain,Rat Inbred Strains,Rat Strain, Inbred,Rat Strains, Inbred,Rat, August,Rat, Inbred Strains,Rats Inbred Strain,Rats Inbred Strains,Rats, August,Rats, Inbred Strain,Strain Rat, Inbred,Strain Rats, Inbred,Strain, Inbred Rat,Strains, Inbred Rat
D001794 Blood Pressure PRESSURE of the BLOOD on the ARTERIES and other BLOOD VESSELS. Systolic Pressure,Diastolic Pressure,Pulse Pressure,Pressure, Blood,Pressure, Diastolic,Pressure, Pulse,Pressure, Systolic,Pressures, Systolic
D002404 Catheterization Use or insertion of a tubular device into a duct, blood vessel, hollow organ, or body cavity for injecting or withdrawing fluids for diagnostic or therapeutic purposes. It differs from INTUBATION in that the tube here is used to restore or maintain patency in obstructions. Cannulation,Cannulations,Catheterizations
D006339 Heart Rate The number of times the HEART VENTRICLES contract per unit of time, usually per minute. Cardiac Rate,Chronotropism, Cardiac,Heart Rate Control,Heartbeat,Pulse Rate,Cardiac Chronotropy,Cardiac Chronotropism,Cardiac Rates,Chronotropy, Cardiac,Control, Heart Rate,Heart Rates,Heartbeats,Pulse Rates,Rate Control, Heart,Rate, Cardiac,Rate, Heart,Rate, Pulse
D006470 Hemorrhage Bleeding or escape of blood from a vessel. Bleeding,Hemorrhages
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D013997 Time Factors Elements of limited time intervals, contributing to particular results or situations. Time Series,Factor, Time,Time Factor
D014667 Vasopressins Antidiuretic hormones released by the NEUROHYPOPHYSIS of all vertebrates (structure varies with species) to regulate water balance and OSMOLARITY. In general, vasopressin is a nonapeptide consisting of a six-amino-acid ring with a cysteine 1 to cysteine 6 disulfide bridge or an octapeptide containing a CYSTINE. All mammals have arginine vasopressin except the pig with a lysine at position 8. Vasopressin, a vasoconstrictor, acts on the KIDNEY COLLECTING DUCTS to increase water reabsorption, increase blood volume and blood pressure. Antidiuretic Hormone,Antidiuretic Hormones,beta-Hypophamine,Pitressin,Vasopressin,Vasopressin (USP),Hormone, Antidiuretic,beta Hypophamine

Related Publications

R W Rockhold, and J T Crofton, and D P Brooks, and L Share
January 1988, Clinical and experimental hypertension. Part A, Theory and practice,
R W Rockhold, and J T Crofton, and D P Brooks, and L Share
January 1991, Clinical and experimental hypertension. Part A, Theory and practice,
R W Rockhold, and J T Crofton, and D P Brooks, and L Share
October 2020, Medical science monitor : international medical journal of experimental and clinical research,
R W Rockhold, and J T Crofton, and D P Brooks, and L Share
June 1992, Journal of the autonomic nervous system,
R W Rockhold, and J T Crofton, and D P Brooks, and L Share
March 1980, The American journal of physiology,
R W Rockhold, and J T Crofton, and D P Brooks, and L Share
February 1998, Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association,
R W Rockhold, and J T Crofton, and D P Brooks, and L Share
January 1995, Fundamental & clinical pharmacology,
R W Rockhold, and J T Crofton, and D P Brooks, and L Share
July 1999, Pflugers Archiv : European journal of physiology,
R W Rockhold, and J T Crofton, and D P Brooks, and L Share
April 1992, Clinical and experimental pharmacology & physiology,
Copied contents to your clipboard!