Neem Seed Protein-Derived Peptides Protect the Heart From Iron-Induced Damage | Research

The takeaway

Hydrolysates from neem seed protein alleviated iron-induced cardiac injury through antioxidant bioactive peptides that reduce oxidative stress and inflammation.

Plant peptides protect heart
Neem seed protein-derived peptides chelate iron and reduce oxidative stress to protect cardiac cells from iron overload damage

What the researchers found

Neem seed protein hydrolysates containing bioactive peptides alleviated iron-induced cardiac injury through antioxidant, iron-chelating, and anti-inflammatory mechanisms.

Why it matters

Iron overload cardiotoxicity affects patients with hemochromatosis, thalassemia, and those receiving repeated blood transfusions. Natural peptide-based protection could complement medical iron chelation.

The numbers in context

Pro-oxidant concentration: 0.1 mM FeSO4. Peptide treatment increased catalase, SOD, ENTPDase, 5'NTPDase, glutathione, and HDL-cholesterol while reducing MDA (a damage marker).

How the study worked

Generated neem seed protein hydrolysates. Tested cardioprotective effects against iron-induced injury. Assessed antioxidant activity, iron chelation, and inflammatory markers.

Who was studied

Ex vivo male Wistar rat cardiac tissue

What this study cannot tell us

In vitro/preclinical study. The amount of protective peptide released during human digestion of neem seeds is unknown. Neem seed consumption is not common globally.

How to read the evidence

Preliminary evidence: in vitro/preclinical demonstration of cardioprotective bioactive peptide activity from neem seed hydrolysates.

When this study was published

Published in 2025. Adds cardioprotection to the growing catalog of food-derived bioactive peptide functions.

The bigger picture

Food-derived bioactive peptides with cardioprotective properties add to the growing evidence that dietary proteins are more than just nutrition — they release peptides during digestion that actively protect organs from damage.

Questions still open

Could neem seed peptides be developed as supplements for iron-overload patients?
Which specific peptide sequences provide the strongest cardioprotection?
Do other plant protein sources release similar cardioprotective peptides?

Common questions

Can food peptides protect the heart?

This study shows that peptides released from neem seed protein during digestion can protect heart cells from iron-induced damage by acting as antioxidants and iron chelators. Similar protective peptides have been found in other foods.

What is iron overload and who is at risk?

Iron overload occurs when the body accumulates too much iron, which damages organs through oxidative stress. People with hemochromatosis, thalassemia, or those receiving frequent blood transfusions are at risk. The heart is particularly vulnerable to iron damage.

Read the original research

Neem seed protein hydrolysates alleviate iron-induced cardiac injury via effects on angiotensin-converting enzyme, purinergic enzymes, redox balance, and lipid metabolism.

Archives of physiology and biochemistry, 131(4), 670-682

View on PubMed ↗Publisher’s paper ↗

Citation

Acho, Marvellous A; Erukainure, Ochuko L; Salau, Veronica F; Osemwegie, Osarenkhoe O; Amonsou, Eric; Arise, Rotimi O. (2025). Neem seed protein hydrolysates alleviate iron-induced cardiac injury via effects on angiotensin-converting enzyme, purinergic enzymes, redox balance, and lipid metabolism.. Archives of physiology and biochemistry, 131(4), 670-682. https://doi.org/10.1080/13813455.2025.2483912