A recent study entitled: Preventive effects of pyrroloquinoline quinone on formation of cataract and decline of lenticular and hepatic glutathione of developing chick embryo after glucocorticoid treatment. Nishigori H1, Yasunaga M, Mizumura M, Lee JW.
Found that when 15-day-old fertile eggs, almost all lenses of chick embryos treated with HC for 48 hr were classified as cataract stage IV-V (95%). A triple application of potassium pyrroloquinoline quinone (PQQ) demonstrated a preventive effect against the HC-induced cataract formation. PQQ also prevented the decline of GSH in the lens caused by HC. The decline of GSH in liver 24 hours subsequent to HC administration was prevented by PQQ. Hence, data indicates that PQQ can have a preventive effect on cataracts in the lens. Click here to read more . . .