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Fatty acid profile in patients with phenylketonuria and its relationship with bone mineral density.
MedLine Citation:
PMID:  20830525     Owner:  NLM     Status:  In-Data-Review    
BACKGROUND: Patients with phenylketonuria (PKU) undergo a restrictive vegan-like diet, with almost total absence of n-3 fatty acids, which have been proposed as potential contributors to bone formation in the healthy population. The PKU diet might lead these patients to bone mass loss and, consequently, to the development of osteopenia/osteoporosis. Therefore, we proposed to analyze their plasma fatty acid profile status and its relationship with bone health.
METHODS: We recruited 47 PKU patients for this cross-sectional study and divided the cohort into three age groups (6-10 years, 11-18 years, 19-42 years). We measured their plasma fatty acid profile and bone mineral density (BMD) (both at the femoral neck and the lumbar spine). Seventy-seven healthy controls also participated as reference values of plasma fatty acids.
RESULTS: Docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) and total n-3 fatty acids were significantly diminished in PKU patients compared with healthy controls. DHA, EPA, and total n-3 fatty acids were also positively associated with bone mineral density (r = 0.83, p = 0.010; r = 0.57, p = 0.006; r = 0.73, p = 0.040, respectively). There was no association between phenylalanine (Phe), Index of Dietary Control (IDC), calcium, 25-hydroxivitamin D concentrations, daily calcium intake, and BMD.
CONCLUSION: Our results suggest a possible influence of essential fatty acids over BMD in PKU patients. The lack of essential n-3 fatty acids intake in the PKU diet might affect bone mineralization. Further clinical trials are needed to confirm the effect of the n-3 essential fatty acids on bone accrual in a cohort of PKU patients.
Sergio Lage; María Bueno; Fernando Andrade; José Angel Prieto; Carmen Delgado; María Legarda; Pablo Sanjurjo; Luis Jose Aldámiz-Echevarría
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Publication Detail:
Type:  Journal Article     Date:  2010-09-10
Journal Detail:
Title:  Journal of inherited metabolic disease     Volume:  33 Suppl 3     ISSN:  1573-2665     ISO Abbreviation:  J. Inherit. Metab. Dis.     Publication Date:  2010 Dec 
Date Detail:
Created Date:  2013-08-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7910918     Medline TA:  J Inherit Metab Dis     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  363-71     Citation Subset:  IM    
Division of Metabolism, Department of Paediatrics, Cruces Hospital, Plaza de Cruces s/n, 48903, Barakaldo, Vizcaya, Spain,
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