The biomarker 2-Methoxy-E1 is part of the phase 2 metabolism.
2-Methoxy-E1 is produced from 2-OH-E1 through the COMT enzyme. Anti-cancerogenic effects have been ascribed to 2-OH-E1 and particularly 2-Methoxy-E1.
2-Methoxy-E1 has shown antiproliferative effects in both hormone-dependent and hormone-independent breast cancer cells. These studies have shown that urinary 2-Methoxy-E1 levels were lower in breast cancer patients than controls.
As an example: The average woman usually turns her 2-OH-E1 with a value of 10 into 2-Methoxy-E1 with a value of 5. So it’s usually a 2:1 relationship. So look at your 2-OH-E1 value and your 2-Methoxy-E1 value and see if you have a 2:1 ratio.
The 2-Methoxy Estrogens are considered to be protective. Low levels are usually a reflection of overall low estrogens and may be improved with supplemental estrogen. Metabolized from 2-OH-E1. A comparison of 2-Methoxy-E1 with 2-OH-E1 allows insight into methylation pathways. If the 2-Methoxy-E1 value is at least 25% of 2-OH-E1 value, methylation is probably adequate. If <25% consider adding methyl donors.
Phase 2 metabolism (methylation):
After estrogens go through phase 1 detoxification, they move on to methylation which is part of phase 2 detoxification. Methylation, in essence, “neutralizes” the phase 1 metabolites and prepares them to be excreted out of the body instead of shuttling them back into circulation. Only 2-OH and 4-OH estrogens are methylated. 16-OH-E1 is not.
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