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Food Pharmacy
Spring 1999
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Goal tending
Treatments for mitochondrial disorders, according to Peter W. Stacpoole, M.D., Ph.D., should be designed to address a minimum of two goals: 

First, maximize the production of mitochondrial ATP (adenosine triphosphate) by stimulating aerobic glucose oxidation. 

Second, minimize the production of free radicals by reversing cellular energy failure and increasing the efficiency of the body’s natural mechanisms for scavenging free radicals. 

Because mitochondria are especially vulnerable to attacks by free radicals, Stacpoole believes it is important in mitochondrial disorders to attempt to limit cell damage from free radicals.

In his review article published in Metabolism, Stacpoole offers a biochemical rationale for several possible ways to address both of these goals. Treatment options discussed include:

carnitine
dichloroacetate (DCA)
vitamin C
vitamin E
beta-carotene
omega-3 fatty acids.

Additional investigations are required to evaluate these treatments.
Reference:
Stacpoole, PW; Lactic Acidosis and Other Mitochondrial Disorders Metabolism 1997 46:306-21 


Related links:
Carnitine and CoQ10: Miracles Cures or Money Down the Drain?
MDA Quest article that explores these two cofactors.

Levocarnitine
Sigma-Tau site about Carnitor. Includes easy to understand explanations about what carnitine does, as well as a downloadable prescribing brochure in PDF (Adobe Acrobat Reader) format.

New directions in mitochondrial disorders
MDA update with comments from Salvatore DiMauro, M.D.

Mitochondrial disease in perspective: Symptoms, diagnosis and hope for the future 
October 1999 Quest article that discusses free radicals, antioxidants, gene therapy, and other treatments for mitochondrial disorders. 

Mitochondrial cytopathy in adults: What we know so far  July 2001 review by Bruce H. Cohen, M.D. and Deborah R. Gold, M.D.  Note: Requires Adobe Acrobat Reader to view.


For more about mitochondrial disorders, visit Sausages and cells and Hot picks.

For more about free radicals and exercise, visit Radical change.  
  

When some element of the mitochondrial assembly line is defective, "raw" metabolic products begin to back up (picture the famous candy factory episode of "I Love Lucy"). Carnitine becomes bound to the extra metabolites and delivers them to the kidney, where both compounds are excreted in the urine. The net result of this activity is that the overall amount of carnitine in the body can become reduced because the kidneys excrete so much of the bound form.


Carnitine supplements are sometimes given to people with mitochondrial disorders to try to improve the ratio of free to bound carnitine. This therapy, as in primary carnitine deficiency, has met with varying degrees of success.

--Sharon Hesterlee, Ph.D., in Quest magazine.
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