Uno studio che nessuno leggerà

Tra un paio di mesi uscirà il numero di ottobre di Cancer Treatment Reviews dove si sostiene  che una dieta vegana può proteggere gli esseri umani dal cancro in quanto si tratta dello stile alimentare a più basso contenuto in metionina (Cancer Treat Rev. 2012 Oct;38(6):726-36).

I ricercatori australiani Cavuoto P.e Fenech MF. scrivono:
"In humans, vegan diets, which can be low in methionine, may prove to be a useful nutritional strategy in cancer growth control."

Ecco l'abstract dell'articolo, che lascerò in lingua originale per non dare adito a imprecisioni, trattandosi di materia medica:

"Methionine is an essential amino acid with many key roles in  mammalian metabolism such as protein synthesis, methylation  of DNA and polyamine synthesis. Restriction of methionine may be an important strategy in cancer growth control  particularly in cancers that exhibit dependence on methionine for survival and proliferation."

"Methionine dependence in cancer may be due to one or a combination of deletions, polymorphisms or alterations in expression of genes in the methionine de novo and salvage pathways. Cancer cells with these defects are unable to regenerate methionine via these pathways. Defects in the metabolism of folate may also contribute to the methionine dependence phenotype in cancer." 

"Selective killing of methionine dependent cancer cells in  co-culture with normal cells has been demonstrated using culture media deficient in methionine. Several animal studies utilizing a methionine restricted diet have reported inhibition of cancer growth and extension of a healthy life-span. In humans, vegan diets, which can be low in methionine, may prove to be a useful nutritional strategy  in cancer growth control. The development of methioninase which depletes circulating levels of methionine may be another useful strategy in limiting cancer growth."

fonte: http://www.notmilk.com/


Sullo stesso argomento si veda:
http://www.molecularlab.it/news/view.asp?n=4277