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Physiology in Natural Sciences and in the History of the Russian Academy of Sciences
The beginning of physiology studies at the Academy of Sciences and Arts in St. Petersburg dates back to 1725. The first studies were carried out at the Chair of Anatomy and Physiology; and in the 19th century,...
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Article
Vasopressin and Oxytocin Secretion by Microorganisms
The ability of Lactobacillus plantarum strain 8RA-3 to secrete neurohormones arginine vasopressin and oxytocin when grown on solid and in liquid nutrient media was established. An increase in the concentration of...
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Article
Erratum to: Paleontological Journal
An Erratum to this paper has been published: https://doi.org/10.1134/S0031030121340013
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Article
Physiology of the Kidney and Human Water–Salt Homeostasis: New Problems
New approaches to assessing the role of the kidneys in water–salt homeostasis in humans have been proposed. The roles of the kidneys in the continuous restoration of the ideal composition and volume of fluids ...
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Article
Mechanism of Natriuretic Effect of Oxytocin
In rats, intramuscular injection of oxytocin (0.25 nmol/100 g body weight) increased sodium excretion from 19±5 to 120±11 μmol/min. A significant correlation (p<0.001) was revealed between renal excretion of oxyt...
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Article
Principles of Evolution of the Excretory Organs and the System of Homeostasis
The function of the excretory organs in metazoan invertebrates and vertebrates is aimed at maintaining homeostasis. Two patterns of the morpho-functional organization of these organs can be distinguished: I—a ...
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Article
Correlation between Urinary Excretion of Arginine-Vasopressin and Renal Reabsorption of Sodium and Water
We developed an approach for quantitative assay of injected vasopressin in urine samples by ELISA under conditions of physiological suppression of hormone secretion from the neurohypophysis into the blood. In ...
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Article
Differences between Arginine-Vasotocin and Arginine-Vasopressin Effects on the Rat Kidney in Evolution of Osmoregulation in Vertebrates
Arginine-vasotocin (AVT) is a hormone common to most vertebrates except mammals where it is replaced by vasopressin. A study of the effect of both nonapeptides of the vasopressin family [AVT and arginine-vasop...
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Article
Blood Serum Potassium and Sodium Concentration Constants: Search for Regulatory Factors
The age-related dynamics of serum potassium concentration was studied. Extreme conditions (spaceflight, prolonged hypokinesia, or immersion) provide similar tendencies of the decrease of blood serum potassium ...
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Article
Human Physiology: Water and Electrolyte Homeostasis
Human physiology provides an integral description for mechanisms of the entire spectrum of functions in the human body. Successful work of the mechanisms requires a highly stabilized internal environment, whic...
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Article
A New Functional Role of Oxytocin: Participation in Osmoregulation
After a water load in rats hyperhydration occurs and the secretion of oxytocin increases by the neurohypophysis. This increases the water diuresis, the water is quickly excreted by the kidney, and the recovery...
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Article
Stimulus for Glucagon-Like Peptide 1 Secretion in Rats
Blood concentration of glucagon-like peptide-1 (GLP-1) increased 5 min after per os administration of water, sodium chloride solution, or glucose solution. Changes in blood osmolality or blood glucose level di...
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Article
Evolutionary physiology
The tasks, methods and principles of the evolution of functions are overviewed at various levels of organization of physiological systems with the focus on the central problem of physiological evolution—the or...
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Involvement of Glucagon-Like Peptide-1 in the Regulation of Selective Excretion of Sodium or Chloride Ions by the Kidneys
An increase of total glucagon-like peptide-1 (GLP-1) concentration in the plasma in rats was revealed 5 min after oral, but not intraperitoneal administration of NaCl or Trizma HCl solutions. The increase in G...
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Article
Erratum: “Effects of exenatide on glycemia and renal water and ion excretion differ in frogs and rats”
On page 236, left column, the final line of the text should read: Supported by the RSF grant no. 14-15-00730.
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Article
Coevolution of physiological systems
Coevolution is the interaction in the process of evolution of different species that are closely related biologically but do not exchange genetic information. In this paper, we address the problem of coevoluti...
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The mechanism of glucagon-like peptide-1 participation in the osmotic homeostasis
We have found the physiological mechanism of intensification of the excessive fluid removal from the body under the action of glucagon-like peptide-1 and its analog exenatide. Under the water load in rats, exe...
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Article
Effects of exenatide on glycemia and renal water and ion excretion differ in frogs and rats
The aim of this study was to compare the effects of exenatide, a glucagon-like peptide-1 (GLP-1) mimetic, on glucose and water–salt homeostasis in animals with different levels of renal proximal tubular reabso...
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Article
Effects of Selective Agonists of V1a, V2, and V1b Receptors on Sodium Transport in Rat Kidney
The role of subtypes of vasopressin receptors in modulation of renal sodium reabsorption was studied in in vivo experiments on Wistar rats. Selective V1a receptor agonist reduced sodium reabsorption in the kidney...
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Article
Effect of oleamide on water and sodium ion transport in osmoregulatory organs of vertebrates
In the frog Rana temporaria L., oleamide solution (10 μmole/L) applied to the isolated basal surface of the skin augmented the short-circuit current (SCC) from 59.8 ± 2.5 to 78.2 ± 1.4 μA/cm2. When applied to the...
