Difference between ADH and Aldosterone

The endocrine system consist of ductless glands that produce hormones. These hormones take part in a different chemical reaction and it is normally used in low concentration.

Both ADH and Aldosterone are some of the hormones produced by these ductless glands. They may sound similar but they tend to be quite different.

The article provides the core difference between ADH and aldosterone in tabular form for easier comprehension. Take the time to read through slowly.

Difference between ADH and Aldosterone

What Is ADH?

ADH stands for Anti-diuretic Hormone which is also known as Vasopressin, arginine vasopressin (AVP) or argipressin.

The hormone comes from hypothalamus part of the brain and the posterior pituitary gland is responsible for their release.

The core function of the hormone is ensuring various body metabolic activities take place. It is a protein in nature and contains several amino acids such as tyrosine, phenylalanine, glutamine, asparagine, proline, arginine, glycine, and cysteine.

What Is Aldosterone?

Aldosterone is a mineralocorticoid steroidal hormone which is made up of cholesterol. The hormone is secreted by the adrenal gland from the adrenal cortex.

The core function of aldosterone is to enhance the absorption of sodium by the nephron to regulate water and salt balance.

Comparison Chart: ADH Vs Aldosterone

Basic Terms ADHAldosterone
MeaningIt is a peptide hormone secreted by the pituitary glandIt is a corticosteroid hormone that facilitates the absorption of sodium by the nephron to regulate water and salt balance.
Type of HormonePeptide hormone.Steroid hormone
SecretionSynthesized in the hypothalamus and secreted by the posterior pituitary glandSynthesized and secreted by the adrenal cortex
Core RoleMakes the DCT and collecting tubules more permeable to waterMakes the DCT and collecting tubules more permeable to sodium ions
ImportanceDirectly increases the water reabsorption from the tubulesIncreases the water reabsorption by creating an osmotic pressure
Blood Vessels EffectIncreases the blood pressure through vasoconstrictionNo effect on the blood vessels
ReleaseReleased in response to hypertonicity of the bloodReleased in response to the increased plasma angiotensin III, serum potassium concentrations, stimulation of the stretch receptors in the atria, etc.
InhibitorsAlcoholAngiotensin-converting enzyme, dopamine, and atrial natriuretic hormone

Core Differences

  1. Aldosterone is made in the adrenal cortex while ADH synthesized in the hypothalamus.
  2. ADH helps to conserve water directly through its reabsorption whereas Aldosterone through indirectly through the reabsorption of sodium.
  3. The blood vessel effect upon release of ADH is vasoconstriction while aldosterone has no effect.
  4. ADH helps to increase reabsorption of water from tubules while Aldosterone increases water reabsorption by creating an osmotic pressure.

Core Similarities

  1. Both increases water reabsorption in the nephron
  2. Both are secreted under low pressure
  3. Both increase blood pressure by producing concentrated urine

Comparison Video

Conclusion

The core similarities between ADH and aldosterone is that they increase the reabsorption of water in the nephron.

Understanding the core difference between ADH and aldosterone will help to differentiate how these two hormone function.

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