PQQ’s potential to stimulate mitochondrial biogenesis was foreshadowed by repeated early findings indicating its central role in growth and development across multiple forms of life.
It has been shown to be a potent growth factor in plants, bacteria, and higher organisms.21,22 Pre-clinical studies reveal that when deprived of dietary PQQ, animals exhibit stunted growth, compromised immunity, impaired reproductive capability, and most importantly, fewer mitochondria in their tissue. Rates of conception, the number of offspring, and survival rates in juvenile animals are also significantly reduced in the absence of PQQ.23-25 Introducing PQQ back into the diet reverses these effects, restoring systemic function while simultaneously increasing mitochondrial numberand energetic efficiency.
As the primary engines of almost all bioenergy production, the mitochondria rank among the physiological structuresmost vulnerable to destruction from oxidative damage. PQQ’s formidable free radical–scavenging capacity furnishes the mitochondria with superior antioxidant protection.
At the core of this capacity is an extraordinary molecular stability.30 As a bioactive coenzyme, PQQ actively participates in the energy transfer within the mitochondria that supplies the body with most of its bioenergy (like CoQ10).
Unlike other antioxidant compounds, PQQ’s exceptional stability allows it to carry out thousands of these electron transfers without undergoing molecular breakdown. It has been proven especially effective in neutralizing the ubiquitous superoxide and hydroxyl radicals.31 According to the most recent research, “PQQ is 30 to 5,000 timesmore efficient in sustaining redox cycling (mitochondrial energy production) . . . than other common [antioxidant compounds], e.g. ascorbic acid.”21 A consistent finding in the scientific literature is that nutrients like PQQ provide more wide-ranging benefits than conventional antioxidants the general public relies on.
PQQ also interacts in a beneficial manner with our brain’s neurotransmitter systems. In particular, PQQ protects neurons by modifying the important NMDA receptor site.39,40 NMDA is a powerful mediator of “excitotoxicity,” a response to long-term overstimulation of neurons that is associated with many neurodegenerative diseases and seizures.41-43 PQQ also protects against neurotoxicity induced by other toxins, including mercury.44,45