Peptide · Endogenous peptide family

Apelin

Research peptide
Aliases · APLN · Preproapelin-derived peptides

A family of endogenous peptides that activate the apelin receptor and regulate cardiovascular function, fluid balance and metabolism.

Human
2/5
Animal
0/5
In-vitro
0/5
Safety
0/5
Last reviewed · 7/12/2026
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Last reviewed7/12/2026
Evidence statusEarly entry
Published references0
Trust signal panel
Evidence & safety
  • Human evidence
    n/a
  • Animal evidence
    n/a
  • Mechanistic
    n/a
  • Safety knowledge
    n/a
  • Editorial confidence
    4/5
View in knowledge graph →See this peptide connected to conditions & mechanisms
01

Evidence Snapshot

Evidence snapshot · 2 verified refs
Overall
2/5Emerging / preliminary
Human
2/5Some human clinical evidence
Animal
0/5None identified
In-vitro
0/5None identified
Safety
0/5None identified
02

Scientific identity

Peptide family
Apelin receptor ligands
Entity class
Endogenous peptide family
Alternative names
APLNPreproapelin-derived peptides
Discovery history

Identified in 1998 as the endogenous ligand family for the previously orphan APJ receptor.

02

Proposed Mechanisms

03

Reported / Studied Uses

04

Human Evidence

Human physiology studies and early agonist trials demonstrate vasodilatory and cardiac effects, but no native apelin product has an established routine therapeutic indication.

05

Animal Evidence

Extensive animal evidence supports cardiovascular, renal, metabolic and fluid-balance actions.

Species translation to humans is uncertain.
06

Safety & Unknowns

endogenous-peptideinvestigational-therapyblood-pressure-effectsshort-half-life
Potential risks include hypotension, dizziness and cardiovascular effects. Different apelin isoforms are not interchangeable.
07

Regulatory Status

CountryStatusNotes
08

Community Observations

No approved community reports yet. Submit one. Aggregate data is observational only.
09

References

  • No verified references linked yet. Editors will add primary sources.
10

Full Disclaimer

This page is for educational information only. It does not constitute medical advice, diagnosis, treatment, dosing guidance, or a recommendation to use any peptide, medicine or research chemical. Many peptides discussed on Atlas are not approved for human use in most jurisdictions and may have limited or unknown long-term safety data.

Community observations shown on this page are anonymised, moderated and observational only. They do not establish safety or effectiveness.

Always consult a qualified healthcare professional before making decisions about your health. See medical disclaimer and methodology.

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ImportantPeptiBrief is an educational information platform. It does not diagnose, prescribe, sell peptides, recommend dosing, encourage self-experimentation or replace qualified medical care. Published scientific evidence is kept separate from community observations and uncertainty.