Metabolism, uptake, and excretion of a D-glucaric acid salt and its potential use in cancer prevention

Z. Walaszek, J. Szemraj, M. Narog, A. K. Adams, J. Kilgore, U. Sherman, M. Hanausek

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

D-Glucaric acid (GA) is a nontoxic, natural compound. One of its derivatives is the potent β-glucuronidase inhibitor D-glucaro-1,4-lactone (1,4-GL). The goal of this study was to demonstrate the in vivo formation of 1,4-GL from a D-glucarate salt and determine its metabolism, uptake by selected organs, and excretion following oral administration of potassium hydrogen D-[14C]glucarate to male and female Sprague-Dawley rats. 1,4-GL increases detoxification of carcinogens and tumor promoters/progressors by inhibiting β-glucuronidase and preventing hydrolysis of their glucuronides. 1,4-GL and its precursors, such as potassium hydrogen D-glucarate and calcium D-glucarate, may exert their anticancer action, in part, through alterations in steroidogenesis accompanied by changes in the hormonal environment and the proliferative status of the larger organ. Thus, GA derivatives may be useful as new or adjuvant cancer preventive and therapeutic agents. In our study, 1,4-GL was found to be formed from the D-glucarate salt in the stomach of rats. It was apparently absorbed from the gastrointestinal tract, transported with the blood to different internal organs, and excreted in the urine and to a lesser extent in bile. There were no significant differences in the metabolism of PHG between male and female rats. Thus, formation of 1,4-GL from D-glucaric acid derivatives may be prerequisite for their inhibition of chemical carcinogenesis in rodents and prevention of breast, prostate, and colon cancer in humans.

Original languageEnglish (US)
Pages (from-to)178-190
Number of pages13
JournalCancer detection and prevention
Volume21
Issue number2
StatePublished - 1997
Externally publishedYes

Keywords

  • cancer prevention
  • D-glucaric acid
  • metabolism
  • Sprague-Dawley rats

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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