Urine GABA levels in ovarian cancer patients: Elevated GABA in malignancy

Catherine S. Nicholson-Guthrie, George D. Guthrie, Gregory P. Sutton, John C. Baenziger

Research output: Contribution to journalArticle

29 Scopus citations


The association of malignancy with elevated diamine oxidase (DAO), an enzyme producing gamma-aminobutyric acid (GABA) is well documented. In ovarian cancer, increased DAO occurs in the malignant tissues and plasma. Since higher DAO levels cause GABA accumulation, elevated GABA may occur in ovarian cancer and be reflected in urine. We tested this hypothesis and found that half the ovarian cancer patients had a clearly elevated urine GABA, a result that is in agreement with previous reports on DAO and malignancy. The published findings on DAO, GABA and malignancy suggest that elevated GABA is associated with cancer. This proposal could lead to a GABA urine monitor or new directions in cancer treatment or research. (C) 2001 Elsevier Science Ireland Ltd.

Original languageEnglish (US)
Pages (from-to)27-30
Number of pages4
JournalCancer Letters
Issue number1
StatePublished - Jan 10 2001


  • Diamine oxidase
  • Gamma-aminobutyric acid
  • Malignancy
  • Ovarian cancer
  • Urine GABA

ASJC Scopus subject areas

  • Cancer Research
  • Molecular Biology
  • Oncology

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