11 Targeted agents and immunotherapies have produced only marginal gains
2 Vitamin B1 Vitamin B1, or thiamine, is an essential nutrient obtained through dietary sources such as whole-grain products, brown rice, meat, vegetables, and fruits ( Thiamine is integral to the biochemistry of the nervous system, serving primarily as a coenzyme in key enzymatic reactions associated with energy metabolism, particularly the conversion of carbohydrates into usable energy ( In the brain, thiamine is phosphorylated at the cellular level to form its active derivative, thiamine pyrophosphate (TPP) ( Figure 3 )
Some people may struggle to absorb enough through food or supplements, making injections a helpful option
2 The British Society for Haematology recommends intramuscular vitamin B 12 for severe deficiency and malabsorption syndromes, whereas oral replacement may be considered for patients with asymptomatic, mild disease with no absorption or compliance concerns
The histidine position is therefore not interchangeable, and its specific placement at residue 2 is what makes the GHK sequence a high-affinity copper-binding motif
Differences in treatment response may be indicative of differences in etiologies and mechanisms, like neuroinflammation, changes in the neuroendocrine system, or alterations in the gut microbiome (Mousten et al., 2022)