Side-by-Side Comparison · 2026

Big Endothelin-1 vs Salusin-Beta

Big Endothelin-1 vs Salusin-Beta — mechanism, half-life, dosing, and research status compared. Which is right for your protocol?

Big Endothelin-1
Vasoactive Peptide

Big endothelin-1 (big ET-1) is a 38-amino acid peptide that is the direct precursor to the potent vasoconstrictor endothelin-1 (ET-1). It is produced by vascular endothelial cells from preproendothelin-1 and cleaved to the active 21-amino acid ET-1 by endothelin-converting enzyme...

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Salusin-Beta
Vasoactive Peptide

Salusin-beta is a 20-amino acid vasoactive peptide derived from the TOR2A (torsin family 2 member A) gene, which also encodes the related peptide salusin-alpha (28 aa). Discovered in 2003 by Shichiri et al....

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Key Parameters
Parameter Big Endothelin-1 Salusin-Beta
Category Vasoactive Peptide Vasoactive Peptide
Research Preclinical/Biomarker Research
Half-Life Longer than ET-1 (~plasma half-life 3-5 min ET-1) Unknown
Typical Dose Research only 1-100 nmol/kg (animal)
Frequency N/A Variable
Route Endogenous; IV (research) Intravenous, Subcutaneous
FDA Status No approval Not approved

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Frequently Asked Questions
What is the difference between Big Endothelin-1 and Salusin-Beta?
Big Endothelin-1: Big endothelin-1 (big ET-1) is a 38-amino acid peptide that is the direct precursor to the potent vasoconstrictor endothelin-1 (ET-1). It is produced by vascular endothelial cells from preproendotheli... Salusin-Beta: Salusin-beta is a 20-amino acid vasoactive peptide derived from the TOR2A (torsin family 2 member A) gene, which also encodes the related peptide salusin-alpha (28 aa). Discovered in 2003 by Shichiri ...
Which has a longer half-life, Big Endothelin-1 or Salusin-Beta?
Big Endothelin-1 half-life: Longer than ET-1 (~plasma half-life 3-5 min ET-1). Salusin-Beta half-life: Unknown.
Can you stack Big Endothelin-1 and Salusin-Beta?
Big Endothelin-1 and Salusin-Beta are in the same category and used together in research protocols. Always consult relevant literature and follow appropriate guidelines.

For research use only. Not medical advice. ASCEND does not conduct or endorse any specific research protocol. Always consult relevant scientific literature and regulatory guidelines.