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CBF reductions Individuals and animals with AD exhibit reductions in CBF and impaired cerebrovascular reactivity, particularly in the hippocampus, thalamus, frontal, and occipital cortices, as assessed by arterial spin labeling magnetic resonance imaging [157, 177, 178]
The applications are where the theoretical 5-Amino-1MQ vs MOTS-c debate becomes practical
Pharmacokinetics: Cyanocobalamin is administered intranasally, orally, and parenterally, while hydroxocobalamin is administered only parenterally. Once absorbed, vitamin B12 is highly bound to transcobalamin II, a specific B-globulin carrier protein and is distributed and stored primarily in the liver as coenzyme B12. The bone marrow also stores a significant amount of the absorbed vitamin B12. This vitamin crosses the placenta and is distributed into breast milk. Enterohepatic recirculation conserves systemic stores. The half-life is about 6 days (400 days in the liver). Elimination is primarily through the bile; however, excess cyanocobalamin is excreted unchanged in the urine
