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Abstract Title:

Motor neuronal protection by L-arginine prolongs survival of mutant SOD1 (G93A) ALS mice.

Abstract Source:

Biochem Biophys Res Commun. 2009 Jul 10;384(4):524-9. Epub 2009 May 8. PMID: 19427829

Abstract Author(s):

Junghee Lee, Hoon Ryu, Neil W Kowall

Article Affiliation:

Department of Neurology, Boston University School of Medicine, Boston, MA 02118, USA. junghee@bu.edu

Abstract:

Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disorder characterized by progressive paralysis due to motor neuron degeneration. Despite the fact that many different therapeutic strategies have been applied to prevent disease progression, no cure or effective therapy is currently available for ALS. We found that L-arginine protects cultured motor neurons from excitotoxic injury. We also found that L-arginine supplementation both prior to and after the onset of motor neuron degeneration in mtSOD1 (G93A) transgenic ALS mice significantly slowed the progression of neuropathology in lumbar spinal cord, delayed onset of motor dysfunction, and prolonged life span. Moreover, L-arginine treatment was associated with preservation of arginase I activity and neuroprotective polyamines in spinal cord motor neurons. Our findings show that L-arginine has potent in vitro and in vivo neuroprotective properties and may be a candidate for therapeutic trials in ALS.

Study Type : Animal Study

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Sayer Ji
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