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Abstract Title:

Long-term effect of acetyl-L-carnitine for antiretroviral toxic neuropathy.

Abstract Source:

HIV Clin Trials. 2005 Nov-Dec;6(6):344-50. PMID: 16566084

Abstract Author(s):

Christian Herzmann, Margaret A Johnson, Mike Youle

Article Affiliation:

Royal Free Centre for HIV Medicine, Royal Free Hospital, London, United Kingdom. christian.herzmann@web.de

Abstract:

BACKGROUND: Nucleoside analogue reverse transcriptase inhibitors (NRTIs) used for the treatment of HIV can a cause distal symmetrical peripheral polyneuropathy by disruption of mitochondrial metabolism. Treatment with acetyl-L-carnitine (ALCAR) has shown short-term symptomatic and histological improvement. Long-term effects have not been investigated. PURPOSE: To assess the subjective and objective degree of antiretroviral toxic neuropathy (ATN) during treatment with ALCAR. METHOD: A cohort of 21 patients with ATN who commenced treatment with ALCAR between March 1999 and October 2001 was reviewed after a mean of 4.3 years using standardized questionnaires and neurological examination. RESULTS: Of the 21 patients, 2 had died and 3 were lost to follow-up. 16 patients were assessed. 10 were still on potentially neurotoxic drugs. 13 were still taking ALCAR. 9 were pain free. The most common symptom was numbness (mild, moderate, and severe in 12, 3, and 0 patients, respectively), followed by paraesthesia (8, 2, 2), pain (4, 3, 0), and burning (5, 2, 0). There was mildly reduced sensation in the toes of 8 patients. 13 patients reported that ALCAR had improved their symptoms very much or moderately, 2 reported no change, and 1 reported a moderate worsening. CONCLUSION: ALCAR led to long-term symptomatic improvement in most patients without the need to discontinue neurotoxic drugs. Although in this study there was no control group, this agent appears to be an effective pathogenesis-based treatment for ATN.

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