http://www.ncbi.nlm.nih.gov/pubmed/18491985Expert Opin Investig Drugs. 2008 Jun;17(6):827-43.
Acetyl-L-carnitine and alpha-lipoic acid: possible neurotherapeutic agents for mood disorders?
Soczynska JK, Kennedy SH, Chow CS, Woldeyohannes HO, Konarski JZ, McIntyre RS.
Source
University of Toronto, Institute of Medical Science, Toronto, ON, Canada.
Abstract
BACKGROUND:
Mood disorders are associated with decrements in cognitive function, which are insufficiently treated with contemporary pharmacotherapies.
OBJECTIVES:
To evaluate the putative neurotherapeutic effects of the mitochondrial cofactors, L-carnitine, acetyl-L-carnitine, and alpha-lipoic acid; and to provide a rationale for investigating their efficacy in the treatment of neurocognitive deficits associated with mood disorders.
METHODS:
A PubMed search of English-language articles published between January 1966 and March 2007 was conducted using the search terms carnitine and lipoic acid.
RESULTS:
L-carnitine and alpha-lipoic acid may offer neurotherapeutic effects (e.g., neurocognitive enhancement) via disparate mechanisms including antioxidant, anti-inflammatory, and metabolic regulation. Preliminary controlled trials in depressed geriatric populations also suggest an antidepressant effect with acetyl-L-carnitine.
CONCLUSIONS:
L-carnitine and alpha-lipoic acid are pleiotropic agents capable of offering neuroprotective and possibly cognitive-enhancing effects for neuropsychiatric disorders in which cognitive deficits are an integral feature.
PMID:
18491985
ON EDIT TO ADD:
http://www.ncbi.nlm.nih.gov/pubmed/15820492
Clin Chim Acta. 2005 May;355(1-2):173-80.
Oxidative stress on mitochondrial antioxidant defense system in the aging process: role of DL-alpha-lipoic acid and L-carnitine.
Savitha S, Tamilselvan J, Anusuyadevi M, Panneerselvam C.
Source
Department of Medical Biochemistry, Dr. ALMPG. Institute of Basic Medical Science, University of Madras, Taramani, Chennai 600113, India.
Abstract
BACKGROUND:
Oxidative damage is hypothesized to accumulate throughout the lifetime of an organism, eventually giving rise to aging. The mitochondria may be the primary cellular source and target of endogenous ROS as they are produced as a normal byproduct of the electron transport system.
METHODS:
Male albino Wistar rats were used in this study. The animals were divided into 6 groups, each group consisting of 6 animals. Groups I, III, and V were young, middle-aged and aged control rats and Groups II, IV, and VI were treated with carnitine (300 mg/kg bw) and dl-alpha-lipoic acid (150 mg/kg bw), respectively. After the treatment period, the animals were sacrificed and the heart and skeletal muscle were removed for analysis.
RESULT:
There was a significant reduction in the levels of antioxidants in both middle-aged and aged rats whereas the thiobarbituric acid reactive substances were found to be increased. Co-supplementation of carnitine and lipoic acid improved the antioxidant status and brought down the levels of TBARS.
CONCLUSION:
Co-supplementation of lipoic acid with carnitine has a beneficial effect in reversing the age-related abnormalities seen in aging. This effect was associated with the decrease in free radical production and rise in antioxidant levels by carnitine and lipoic acid, thereby lowering oxidative stress.
PMID:
15820492