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A CoQ10 deficiency may also cause a defect in the metabolism of hydrogen sulphide as the result of a reduction in the protein level of the enzyme quinone oxidoreductase, which is a sulphide, and a consequent alteration in mitochondrial sulphide metabolism [52,53]

These individuals were thought to harbor an abnormality in the enzyme, transketolase
There are several B vitamins, collectively available in supplement form as vitamin B complex

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