Egg yolk peptides protect brain cells from oxidative stress

Because the human lifespan will increase, so too does the danger of creating neurological problems similar to Parkinson’s illness, Alzheimer’s illness, nervousness and melancholy. These problems are sometimes accompanied by an extra quantity of reactive oxygen species, or ROS. ROS are generated within the physique all through regular processes and have their place in a functioning mobile ecosystem; nonetheless, when their numbers get too excessive, issues come up. Hyun-Dong Paik from Konkuk College and his crew of researchers use brief chains of amino acids present in egg yolk, phosvitin phosphopeptides, to evaluate the results of consumable antioxidants in safety towards the build-up of oxidative stress in human neuroblastoma cells.

Hyun-Dong Paik and his crew’s outcomes have been printed in Meals Science of Animal Merchandise on July 1st, 2026.

Reactive oxygen species (ROS), similar to hydrogen peroxide (H₂O₂), in extra can result in oxidative-stress-induced cell loss of life throughout metabolic processes, in flip having the potential to result in mutation and protein harm, later main to numerous illnesses. Whereas human our bodies have methods of eliminating a few of these oxidants by way of antioxidant enzymes like catalases, it’s typically an amazing and unimaginable job as soon as these oxidants begin to construct up excessively. That is the place exterior types of antioxidants, taken in by way of weight loss program or supplementation, can assist the method.

Testing occurred on SH-SY-5Y cells utilizing PPP from hydrolyzed, high-temperature mild-pressure (HTMP) handled hen egg yolk. The hydrolyzing course of breaks the big molecules into smaller ones that may extra simply be absorbed by the cells. Completely different brokers similar to trypsin (T), Multifect 14L (M) and a mixture of the 2 (TM) have been studied, in addition to a remedy utilizing simply the HTMP-treated materials. Of those 4, HTMP-TM proved itself to indicate essentially the most promise in lowering ROS.

The outcomes from the HTMP-TM remedy had the best antioxidant exercise in addition to elevated cell viability (as much as 76.44% from 57.46% when pretreated with HTMP-TM 4 hours earlier than H₂O₂ remedy) and diminished cell loss of life in burdened SH-SY-5Y cells. This remedy technique additionally exhibited lowering energy (which means PPPs scale back the quantity of electron-donating occurring, due to this fact lowering the “vitality” permitting for unfavorable reactions to happen) and radical scavenging (discovering and lowering free radicals, that are unstable and reactive, and may harm cells and DNA).

Different results of PPPs embody steel chelation, which binds metals in a secure ring for later protected elimination from the physique, and beta-carotene bleaching inhibition and lipid peroxidation inhibition, each of that are protecting towards oxidative stress. HTMP-TM handled PPPs present essentially the most proof of being each antioxidative and neuroprotective on SH-SY-5Y cells.

PPPs are promising practical elements towards H₂O₂-induced neurotoxicity. Nevertheless, extra in vivo research are wanted to exhibit the worth of PPPs as value-added meals/nutraceutical elements.”

Hyun-Dong Paik, researcher at Konkuk College and creator of the research

Extra work additionally must be finished to find out the dosage, supply route and security of PPPs in people and animals, in addition to work on the practical actions of PPPs to proceed understanding their place and performance as a possible antioxidant and neuroprotective addition for the prevention of neurodegenerative illnesses.

Ji-Eun Lee and Hyun-Dong Paik of the Division of Meals Science and Biotechnology of Animal Sources at Konkuk College, Jae Hoon Lee of the Division of Meals Science & Expertise at Jeonbuk Nationwide College, Dong Uk Ahn of the Division of Animal Science at Iowa State College and Kee-Tae Kim of the Analysis Middle at WithBio contributed to this analysis.

The Nationwide Institute of Meals and Agriculture/USDA partially supported this work.