A New Decade of ME Research: The 11th Invest in ME International ME Conference 2016
Mark Berry presents the first in a series of articles on the 11th Invest in ME International ME Conference in London ...
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Effect of n-3 polyunsaturated fatty acids on methylation enzymes

Discussion in 'Detox: Methylation; B12; Glutathione; Chelation' started by nanonug, Apr 15, 2012.

  1. nanonug

    nanonug Senior Member

    Virginia, USA
    This might be of use for those doing methylation protocols. What strikes me is that omega-3 fatty acids end up decreasing homocysteine levels by essentially up-regulating a portion of the transsulfuration pathway and down-regulating the methylation pathway. I am not sure that this is an altogether good thing.

    "Effect of n-3 polyunsaturated fatty acid on gene expression of the critical enzymes involved in homocysteine metabolism"


    Background: Previous studies showed that plasma n-3 polyunsaturated fatty acid (PUFA) was negatively associated with plasma homocysteine (Hcy).

    Objective: We investigated the regulatory effect of n-3 PUFA on mRNA expression of the critical genes encoding the enzymes involved in Hcy metabolism.

    Methods: HepG2 cells were treated with docosahexaenoic acid (DHA), eicosapentaenoic acid (EPA), alpha-linolenic acid (ALA) respectively for 48 h. The cells were collected and total RNA was isolated. The mRNA expression levels of the genes were determined by using Real Time-PCR.

    Results: Compared with controls, the mRNA expression levels of 5-methyltetrahydrofolate reductase (MTHFR) were significantly increased in the DHA group (p < 0.05) and ALA group (p < 0.05); Significantly down-regulated mRNA expression of methionine adenosyltransferase (MAT) was observed with the treatments compared with the controls; the level of MAT expression was significant lower in the DHA group than the ALA group (p < 0.05); Cystathionine-g-lyase (CSE) expression was significantly increased in the DHA (p < 0.05) and EPA groups (p < 0.05) compared with control. No significant changes were shown in mRNA expression levels of S-adenosylhomocysteine hydrolases (SAHH), cystathionine b-synthase (CBS), and 5-methyltetrahydrofolate-homocysteine methyltransferase (MTR).

    Conclusions: Our results suggest that DHA up-regulates CSE and MTHFR mRNA expression and down-regulates MAT mRNA expression involved in Hcy metabolism.
    ppodhajski likes this.
  2. bond


    @nanonug - I'm not sure if your conclusion is correct - they say upregulates MTHFR which is the methylation pathway and CSE but not CBS, the latter standing above CSE in the transsulfuration pathway.

    I guess Ben Lynch is relying on that study for his StrateGene reports.

    Personally I've definetely felt the upregulating effects of DHA.

    From the video above another interesting is cocoa :cautious:
  3. bond


    Wonder if the culpit is the DHA(or ALA as Ben Lynch suggests) or the Omega-3 to omega-6 ratio :confused:

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