Related Experiment Video

Updated: Jul 28, 2026

Evaluation of Vascular Control Mechanisms Utilizing Video Microscopy of Isolated Resistance Arteries of Rats
10:28

Evaluation of Vascular Control Mechanisms Utilizing Video Microscopy of Isolated Resistance Arteries of Rats

Published on: December 5, 2017

Increased plasma vasopressin in low renin essential hypertension

I Os, S E Kjeldsen, J Skjøtø

    Hypertension (Dallas, Tex. : 1979)
    |June 1, 1986
    PubMed

    Insights

    Men with low renin hypertension have elevated plasma vasopressin levels, unlike those with normal renin hypertension. Beta-blocker treatment reduced blood pressure and vasopressin in low renin hypertension patients.

    Area of Science:

    • Cardiology
    • Endocrinology
    • Nephrology

    Background:

    • Essential hypertension is a complex condition with varying hormonal profiles.
    • Plasma vasopressin and renin levels are key indicators in cardiovascular and renal function.
    • Understanding hormonal differences in hypertension subtypes is crucial for targeted therapies.

    Purpose of the Study:

    • To investigate plasma vasopressin and epinephrine levels in men with low renin essential hypertension compared to normotensive controls.
    • To compare hormonal profiles between low renin and normal renin essential hypertension.
    • To assess the effect of beta-adrenergic receptor blockade on vasopressin levels in low renin hypertension.

    Main Methods:

    • Measurement of baseline plasma vasopressin, renin, and epinephrine concentrations.
    • Comparison of hormonal levels between hypertensive and normotensive groups.
    • Assessment of serum osmolality, creatinine clearance, and urinary sodium excretion.
    • Treatment with oxprenolol (a beta-blocker) and subsequent measurement of blood pressure and vasopressin.

    Main Results:

    • Men with low renin hypertension exhibited significantly higher plasma vasopressin concentrations than normotensive controls.
    • Hypertensive subjects had lower plasma renin concentrations compared to controls, despite similar osmolality, creatinine clearance, and sodium excretion.
    • Plasma epinephrine levels were elevated in the low renin hypertensive group.
    • In contrast, men with normal renin hypertension showed normal plasma vasopressin levels.
    • Oxprenolol treatment in low renin hypertension reduced blood pressure and plasma vasopressin levels.

    Conclusions:

    • Elevated plasma vasopressin is associated with low renin essential hypertension, independent of osmolality and sodium balance.
    • Increased plasma epinephrine may also play a role in this hypertensive subtype.
    • Normal renin hypertension does not share the elevated vasopressin profile.
    • Beta-adrenergic blockade offers a potential therapeutic strategy for managing low renin hypertension by reducing both blood pressure and vasopressin.

    More Related Videos

    A Modified Two Kidney One Clip Mouse Model of Renin Regulation in Renal Artery Stenosis08:21

    A Modified Two Kidney One Clip Mouse Model of Renin Regulation in Renal Artery Stenosis

    Published on: October 26, 2020

    Improved Renal Denervation Mitigated Hypertension Induced by Angiotensin II Infusion08:35

    Improved Renal Denervation Mitigated Hypertension Induced by Angiotensin II Infusion

    Published on: May 26, 2022

    Related Concept Videos

    Hormonal Regulation01:33

    Hormonal Regulation

    The renin-aldosterone system is an endocrine system which guides the renal absorption of water and electrolytes, thus managing blood pressure and osmoregulation. Activation of the system begins in the kidneys with a small cluster of cells adjacent to the afferent and efferent blood vessels of the renal corpuscle. As the nephrons are filtering blood, juxtaglomerular cells monitor blood pressure. If they detect a decrease in pressure, they release the hormone renin into the bloodstream.
    Hypertension and Regulation of Blood Pressure01:18

    Hypertension and Regulation of Blood Pressure

    Hypertension, the most common cardiovascular disease, is diagnosed through repeated measurements of elevated blood pressure. Its risks, including damage to the kidney, heart, and brain, are directly proportional to blood pressure levels. Starting from 115/75 mm Hg, the risk of cardiovascular disease doubles with each increment of 20/10 mm Hg. The diagnosis relies on blood pressure measurements, not on patient symptoms, as hypertension is often asymptomatic until end-organ damage is imminent or...
    Antihypertensive Drugs: Angiotensin-Converting Enzyme Inhibitors01:30

    Antihypertensive Drugs: Angiotensin-Converting Enzyme Inhibitors

    Angiotensin-converting enzyme (ACE), a vital component of the renin-angiotensin-aldosterone system, is abundant in lung endothelial cells. ACE converts the inactive decapeptide, angiotensin I, into the active octapeptide, angiotensin II. This potent vasoconstrictor narrows blood vessels, increasing resistance to blood flow and elevating blood pressure. Angiotensin II also stimulates aldosterone production, encouraging kidney cells to reabsorb more sodium and water from urine, thereby increasing...
    Antihypertensive Drugs: Direct Renin Inhibitors01:25

    Antihypertensive Drugs: Direct Renin Inhibitors

    The renin-angiotensin-aldosterone system (RAAS) is an intricate physiological pathway involving numerous enzymes and hormones, including renin, angiotensin-converting enzyme (ACE), angiotensin I and II, and aldosterone. Imbalances within this system increase the production of angiotensin II and aldosterone. Increased angiotensin II levels promote vasoconstriction and blood pressure elevation. Concurrently, higher aldosterone levels stimulate sodium and water reabsorption in the kidneys,...
    Hormonal Regulation of Blood Pressure01:17

    Hormonal Regulation of Blood Pressure

    Endocrinal or hormonal intervention in the cardiovascular system is predominantly exerted by the catecholamines - epinephrine and norepinephrine, as well as a slew of hormones that interact with renal function to modulate blood volume.
    Epinephrine and Norepinephrine
    The adrenal medulla releases epinephrine and norepinephrine, catecholamines that enhance and extend the sympathetic or "fight or flight" physiological response. These hormones escalate heart rate and the force of contraction while...
    Hypertension II: Pathophysiology01:29

    Hypertension II: Pathophysiology

    Hypertension is a chronic condition in which the blood's force against artery walls is excessively high, posing risks such as heart disease. The condition's underlying mechanisms involve complex interactions among the cardiovascular, kidney, and autonomic nervous systems.Renin-Angiotensin-Aldosterone System (RAAS): This system significantly influences blood pressure regulation. When blood pressure decreases, the kidneys secrete renin. This enzyme transforms angiotensinogen, a plasma protein,...