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This study also reported that Schwann cell-specific MCT1 is necessary for long-term maintenance of motor end-plate integrity, which was not investigated in our Schwann cell-specific MCT1 null mice, while MCT4 appears largely dispensable for the support of motor neurons ( FIGURE 1 Lactate transport through MCT1 in the PNS also has an essential role in axonal regeneration following injury, potentially through metabolic support from Schwann cells to axons (Morrison et al., 2015)

Compr Physiol 8(4):1639

The rest is better guided by measurement than by default

First, when you take a pill, it has to be digested and metabolized through the liver or kidney through what is called the first-pass effect

Intestinal permeability in patients with Crohn's disease and ulcerative colitis and their first degree relatives

Similar results have been observed with Volanesorsen, an ASO directed against apo C-III (Kolovou et al., 2022)