"French authorities are warning of turmeric-containing food supplements that could disrupt the immune system
by interfering with inflammatory defence mechanisms that fight infections such as the coronavirus."
https://www.nutraing...immune-response
The report is in French:
https://www.anses.fr...T2020SA0045.pdf
So should we be worried about taking any turmeric/curcumin supplements during this Covid?
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Here is a translation of the part of the report referring to turmeric/curcuma:
"Curcumas owe their anti-inflammatory effect to curcumin and its analogues.
Several mechanisms are mentioned in in vitro or in vivo studies concerning the anti-inflammatory activity of curcumas, their extracts and curcumin:
- inhibition of LOX, COX, phospholipases and the production of leukotrienes, prostaglandins, thromboxane, inducible NO synthase (iNOS) (Bundy et al. 2004, ChainaniWu 2003);
- inhibition of the production of TNF-α and IL-1β; IL-6 and IL-12 (Catanzaro et al. 2018, ChainaniWu 2003, Esatbeyoglu et al. 2012);
- the inhibition of many protease-type enzymes, some of which are involved in inflammatory phenomena: elastase, hyaluronidase, collagenase, metalloproteinases (MMP-1,MMP-3); of MCP-1 (monocyte chemoattractant protein-1) (Xu et al. 1997).
- a decrease in the level of expression of mTOR, a protein targeted by several immunosuppressants (Dai et al. 2018).
In vitro, these effects are observed at concentrations of around 20 µM in general. In vivo, decreases in several pro-inflammatory interleukins
are observed in exposed rodents by force-feeding or food (Catanzaro et al. 2018).
The inhibition of the COX-2 pathway is mainly responsible for the anti-inflammatory effects of curcumin. It results from an inhibition of the activation of NF-κB; activation of Nrf2 contributes to the antioxidant effect of curcumin. This inhibition of NF-κB is attributed to several targets in
Several cell types involved in inflammation and immunity also have their activity modified by curcumin (dendritic cells, macrophages, B and T lymphocytes) (Esatbeyoglu et al. 2012)
Curcumin and C. longa have been the subject of numerous studies relating to their anti-inflammatory effect. Curcuma activity is linked to curcumin, mainly by inhibiting pathways NF-κB and JAK / STAT as well as by activation of Nrf2.
objective inflammatory in chronic inflammation situations. Curcumin looks good tolerated, but in view of experimental data which show that it induces pathway inhibition metabolism of COX-2 and LOX, as well as a reduction in the production of proinflammatory cytokines, it is likely to exert a modification of the immune defenses in a infectious context."
Edited by lancebr, 26 April 2020 - 04:28 PM.