Potential use of d-glucaric acid derivatives in cancer prevention
Z. Walaszek
Cancer Letters1990
Summary (paraphrased)
This review summarizes the Walaszek group's research program on D-glucaric acid (calcium D-glucarate) as a chemopreventive agent. The central mechanism is that D-glucaro-1,4-lactone, the active metabolite, inhibits beta-glucuronidase, the enzyme that deconjugates glucuronidated compounds in the gut and liver and thereby allows their reabsorption. Animal work reviewed here showed that dietary glucarate reduced serum estradiol and 17-ketosteroid precursors (androgen metabolites), consistent with increased excretion of conjugated steroid hormones rather than their recycling.
Why it’s in the systems review
Calcium-D-glucarate is the treatment candidate Powers threads through his beta-glucuronidase theory: block the enzyme, and glucuronidated steroids get excreted instead of deconjugated and reabsorbed. This review is the canonical peer-reviewed summary of that mechanism, including the animal evidence that glucarate administration lowers circulating estradiol and androgen-derived steroid precursors. Recorded here strictly as a mechanistic research record, not a recommendation.