This is a recurring hazard in neurodegeneration drug development, where surrogate measures are seductive precisely because clinical endpoints are slow, noisy, and expensive to move
Waldman, H
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Diyabet Baz aratrmalar, intravenz olarak L-karnitin takviyesinin, kastaki ya seviyelerini azaltr
In contrast, oral supplements must pass through the digestive tract, where factors such as stomach acid, enzyme activity, and gut health can affect the absorption rate
1 Engs paper, published in the Journal of Biological Chemistry , noted something strange: exendin-4 shared 53% of its amino acid sequence with a human gut hormone called glucagon-like peptide-1 (GLP-1), which had been characterized just a few years earlier