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The Association of Serum Carnitine Levels With Severity of Fatigue in Patients With Multiple Sclerosis: A Pilot Study Publisher



Harirchian MH1 ; Babaie S2, 3 ; Keshtkaran N1 ; Bitarafan S1, 4
Authors
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Authors Affiliations
  1. 1. Iranian Center of Neurological Research, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Nutrition and Food Security Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
  3. 3. Department of Nutrition, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
  4. 4. Fraser Health Multiple Sclerosis Clinic, Burnaby Hospital, University of British Columbia, BC, Canada

Source: Current Journal of Neurology Published:2023


Abstract

Background: Fatigue is a common complaint of patients with multiple sclerosis (MS), adversely affecting their quality of life. There is a lot of evidence showing that carnitine deficiency is linked to fatigue development and severity in some conditions. This study aimed to evaluate the association between free L-carnitine serum levels and the severity of fatigue in patients with MS. Methods: This case-control study included 30 patients with relapsing-remitting MS (RRMS) in two age-matched equal-number groups according to the presence or absence of fatigue. Fatigue was scored using the valid questionnaire of Fatigue Severity Scale (FSS) and serum level of free L-carnitine was measured simultaneously. Finally, the association between serum level of free L-carnitine and fatigue severity was evaluated in patients with MS. Results: The mean value of FSS in patients with fatigue was 48.80 ± 8.55, which was nearly two-fold higher than the group without fatigue. We found a significant correlation between the serum level of free L-carnitine and FSS and showed that the patients with fatigue had a significantly lower serum level of free L-carnitine compared to patients without fatigue (P < 0.001). Conclusion: Present study demonstrated that patients with lower serum levels of free L-carnitine were more likely to experience fatigue. We recommend that a higher dietary intake of carnitine might be a useful complementary treatment for MS-related fatigue. © 2023 Iranian Neurological Association, and Tehran University of Medical Sciences.
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