(cellular) energy. The Krebs cycle, or citric acid cycle, is the process by which these furnaces generate energy. The energy molecule, which may be considered the "energy currency" of the cell, is adenosine triphosphate, or ATP for short. It is the end-product of the cellular respiration processes. Every single cell in the body contains these organelles, and the amount in each cell varies according to the individual energy requirements for that cell. Cardiac cells contain thousands of mitochondria, for instance, while some other cells contain merely dozens.
Free Radicals
A largely accepted pathology today for disease states is that of inflammation in the body. Cardiovascular disease, diabetes-related neuropathies, and even Parkinson's disease seem to all have at their root inflammation and the attendant damage to tissues, whether blood vessels, nerve cells, or the muscular system. In fact, current medical science points to free-radical damage and low antioxidant status as a prime factor in the evolution ofParkinson's disease , and that by simply raising that status one may lessen the degenerative symptoms dramatically. Inflammation and free-radical damage also occur at a cellular level, and since the mitochondria power the cell, damage to these little furnaces is inevitable, and affects breakdown and "aging" of the cell and thus tissues and organs. Protection and repair of the mitochondria is possible, science has shown, and the results and ramifications are truly exciting.Powerhouse Duo
As might be expected, supporting your mitochondria nutritionally is best achieved with a veritable who's-who of the most powerful antioxidants out there. One of the first studies published for this area was from UC Berkeley professor of molecular and cell biology, Bruce Ames. According to Ames, mitochondria are the "weak link in aging" and that deterioration of them is an important cause of aging. A primary cause of this deterioration is free-radical damage. Ames discovered that with the use of two nutrients,alpha lipoic acid andacetyl l-carnitine , aging mitochondria could be literally rejuvenated. The carnitine metabolite helps shuttle fats into the cell to be burned as energy and the alpha lipoic acid, a compound normally produced by the mitochondria, is a very powerful antioxidant, preventing and repairing the oxidative damage caused by free-radical electrons. Thecombination of the two , Ames said, made old rats "get up and do the Macarena." Twenty-eight month-old rats (old) received both nutrients in their food and water and after one month began exhibiting not only outward signs of youth, but performed increasingly better in cognitive tests. They acted more peppy and energetic. Supplementation improved both spatialand temporal memory, and reduced the amount of oxidative damage to RNA
in the brain's hippocampus, an area important in memory. Ames also found that
the combination of lipoic acid and acetyl l-carnitine improved
mitochondrial activity and thus cellular metabolism, and increased
levels of various chemicals known to decline with age, including
ascorbic acid, an antioxidant. A conclusion was that of making a 75- to 80-year-old person act middle-aged.
