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Decreased serum vitamin B12 and vitamin D levels affect sleep quality in children with familial Mediterranean fever

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Abstract

Familial Mediterranean fever is an autoinflammatory disorder characterized by recurrent fever and serositis. We aimed to describe serum vitamin B12 and vitamin D levels and their correlation with self-reported sleep quality of pediatric FMF patients. Sixty-three children with FMF were enrolled to the study. Information on sleep quality was obtained using self-administration of Pittsburg Sleep Quality Index (PSQI). The patients were divided into subgroups depending on vitamin D serum concentrations: ≥ 20 and < 20 ng/ml. We also grouped patients according to their serum B12 concentration: ≥ 200, < 200 pg/ml. B12 levels were not correlated with PSQI scores, whereas significant correlation was found between vitamin D and total PSQI scores and daytime sleepiness. Total PSQI score, sleep disorders and daytime sleepiness sub-scores were statistically high in patients with serum D vitamin levels below 20 ng/ml. Sleep efficiency was found lower in patients with serum B12 levels below 200 pg/ml. B12 may have a positive role on effective sleep. More importantly, we suggest that vitamin D is protective against sleep disorders and poor sleep, it may also improve daytime activities.

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Authors and Affiliations

  1. Department of Pediatric Rheumatology, Çukurova University Faculty of Medicine, Adana, Turkey

    Rabia Miray Kisla Ekinci, Sibel Balci & Mustafa Yilmaz

  2. Department of Pediatric Allergy and Immunology, Cukurova University Faculty of Medicine, Adana, Turkey

    Mahir Serbes, Dilek Dogruel & Derya Ufuk Altintas

Authors
  1. Rabia Miray Kisla Ekinci
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  2. Sibel Balci
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  3. Mahir Serbes
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  4. Dilek Dogruel
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  5. Derya Ufuk Altintas
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  6. Mustafa Yilmaz
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Contributions

Dr. Kisla Ekinci and Dr. Yilmaz conceptualized and designed the study, drafted the initial manuscript, and reviewed and revised the manuscript. Dr. Balci, Dr. Serbes and Dr. Dogruel collected data, carried out the initial analyses, and reviewed and revised the manuscript. Dr. Altintas designed the data collection instruments, and coordinated and supervised data collection, and critically reviewed the manuscript. All authors approved the final manuscript as submitted and agree to be accountable for all aspects of the work.

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Correspondence to Rabia Miray Kisla Ekinci.

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No funding was received.

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Authors Rabia Miray Kisla Ekinci, Sibel Balci, Mahir Serbes, Dilek Dogruel, Derya Ufuk Altintas and Mustafa Yilmaz declare that they have no conflict of interest.

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Ekinci, R.M.K., Balci, S., Serbes, M. et al. Decreased serum vitamin B12 and vitamin D levels affect sleep quality in children with familial Mediterranean fever. Rheumatol Int 38, 83–87 (2018). https://doi.org/10.1007/s00296-017-3883-2

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  • DOI: https://doi.org/10.1007/s00296-017-3883-2

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