Thursday, December 17, 2009

12. NADH Treatment: the Crucial Role of Antioxidants

One of the very few promising treatments for Alzheimer's is the coenzyme, NADH (nicotinamide adenine dinucleotide) [12]. In a placebo-controlled study, Alzheimer's subjects given NADH for six months exhibited significantly better performances on verbal fluency, visual constructional ability and abstract verbal reasoning than the control subjects given a placebo. Pyruvate Metabolism

Why would NADH be effective? In the process of converting pyruvate to lactate, lactate dehydrogenase consumes oxygen by oxidizing NADH to NAD+, as illustrated in the accompanying figure. So, if the bioavailability of NADH is increased, it stands to reason that the astrocyte would have an enhanced ability to convert pyruvate to lactate, the critical step in the anaerobic metabolic pathway that is enhanced by amyloid-beta. The process, by absorbing the toxic oxygen, would reduce the damage to the lipids due to oxygen exposure, and would also provide lactate as a source of energy for the neurons.


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