Skolezitova puts what a single EU-reviewed sentence on manganese and the formation of connective tissue actually says into context.
Manganese is one of the trace elements: the body keeps only a very small amount of it on hand and has to replenish it regularly through food. Inside the cell, it turns up in the Golgi apparatus, among other places — the compartment where proteins get their final processing before they leave the cell.
There, manganese takes part in a cofactor arrangement that gives several enzymes their full catalytic speed in the first place. For one of these connections, a claim reviewed and authorized by the European Union exists.
EU-authorized wording · Regulation (EU) No 432/2012
Connective tissue is never just fibers. Between strands of collagen and elastin sits a gel-like filler substance, made up mostly of long sugar chains attached to a protein core. These molecules — called proteoglycans in the scientific literature — bind many times their own weight in water and, in doing so, fill the space the fibers alone don't cover.
In the dermis, in tendons, in ligaments, and in the walls of blood vessels, different members of this molecule family take on similar jobs, often under names such as decorin or biglycan. Without this filler, the fibers alone would be a dry, poorly load-bearing scaffold.
A sugar chain like this doesn't form all at once. In the cell's Golgi apparatus, specialized transfer enzymes attach individual sugar units, one after another, to the growing end of the chain. Each of these steps needs a doubly positively charged metal ion that holds the phosphate group of the respective sugar donor in position so the transfer can happen at all.
For some of these transfer enzymes, manganese takes on exactly this role. Without the ion, the chain grows more slowly or doesn't finish at all — a connection that the European Food Safety Authority (EFSA) reviewed, and on the basis of which the European Commission authorized the following wording:
“Manganese contributes to the normal formation of connective tissue” — EU-authorized wording · Regulation (EU) No 432/2012
In the body as a whole, manganese adds up to only a handful of milligrams, held mostly in the liver and the pancreas. Intake is controlled at the gut wall itself: when dietary manganese is scarce, a larger fraction of it crosses into the bloodstream, and when supply is generous, less of it gets through. The surplus that isn't needed leaves the body mainly by way of bile.
Anyone using a manganese supplement should stick to the stated daily amount on the label, especially with an existing liver condition.
Purchase includes this page without cuts, the Map in full, the food-source table, and the unaltered wording of the regulation.
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