How two body chemicals team up to make rats pee out salt
Interaction between Effects of Insulin and Vasopressin on Renal Excretion of Water and Sodium in Rats
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
Insulin and vasopressin, which have opposite effects on urine concentration, work together to increase sodium excretion more than expected.
These hormones typically counteract each other—insulin increases urine flow, vasopressin reduces it—so their synergistic natriuretic effect contradicts the assumption that opposing hormones cancel out.
Practical Takeaways
Understanding how insulin and vasopressin interact may inform future treatments for fluid retention or high blood pressure.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
Insulin and vasopressin, which have opposite effects on urine concentration, work together to increase sodium excretion more than expected.
These hormones typically counteract each other—insulin increases urine flow, vasopressin reduces it—so their synergistic natriuretic effect contradicts the assumption that opposing hormones cancel out.
Practical Takeaways
Understanding how insulin and vasopressin interact may inform future treatments for fluid retention or high blood pressure.
Publication
Journal
Hormone and Metabolic Research
Year
1982
Authors
Ewa Szczepanska-Sadowska, M. Brzezinski
Related Content
Claims (4)
Insulin might help the kidneys get rid of more water in rats—even when the body’s usual water-control system isn’t working—because it directly affects the kidneys.
When rats that can't make their own water-balancing hormone get a tiny dose of vasopressin through an IV, they pee less and their pee becomes more concentrated — showing the hormone still works to help their kidneys hold onto water.
When rats that can't process alcohol normally are given small amounts of insulin and a hormone called vasopressin together, they pee out more salt than with either hormone alone — but not quite as much as you'd expect if the effects just added up.
When insulin levels go down, your kidneys get rid of more water and salts, so you need to drink fluids with minerals to stay hydrated.