glutathione peroxidase thioredoxin reductases and Systems Functional plasticity of a peroxidase

People think of iron as a pro-oxidant, but iron is also an essential part of the antioxidant thing

Most neutral pH buffers work well

Moreover, ALA exerts antioxidant effects via a dual mechanism: (i) rapid redox-cycling between its disulfide (ALA) and dihydrolipoate (DHLA) forms, which directly quenches ROS without transcriptional activation, and (ii) secondary upregulation of the Nrf2 pathway and suppression of NF-B nuclear translocation (Ghibu et al., 2009)

Tripathi M, et al

For instance, elevated 4-HNE in synovial fluid has been reported in multiple studies, but significant variations in detection methods and patient stratification such as disease stage and inflammation degree between studies mean the strength of evidence for 4-HNE as a driver of OA inflammation amplification still requires cautious interpretation