Hn. Christensen, IS PQQ A SIGNIFICANT NUTRIENT IN ADDITION TO ITS ROLE AS A THERAPEUTIC AGENT IN THE HIGHER ANIMAL, Nutrition reviews, 52(1), 1994, pp. 24-25
The controversy as to the nutritional status of pyrroloquinoline (PQQ)
has now been broadened to include various animal tissues by evidence
of its vitamin status in mice, a mammalian PQQ reductase, and evidence
that this enzyme participates in mechanisms protecting tissues agains
t oxidative stress.