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Bone Status in Patients with Phenylketonuria: A Systematic Review

Abstract: Phenylketonuria (PKU) is the most common inborn error of amino acid metabolism. Although dietary and, in some cases, pharmacological treatment has been successful in preventing intellectual disability in PKU patients who are treated early, suboptimal outcomes have been reported, including bone mineral disease. In this systematic review, we summarize the available evidence on bone health in PKU patients, including data on bone mineral density (BMD) and bone turnover marker data. Data from cohort and cross-sectional studies of children and adults (up to 40 years of age) were obtained by searching the MEDLINE and SCOPUS databases following Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. For each selected study, quality assessment was performed applying the Risk Of Bias In Non-randomized Studies of Interventions (ROBINS I) tool. We found that mean BMD was lower in PKU patients than in reference groups, but was within the normal range in most patients when expressed as Z-score values. Furthermore, data revealed a trend towards an imbalance between bone formation and bone resorption, favoring bone removal. Data on serum levels of minerals and hormones involved in bone metabolism were very heterogeneous, and the analyses were inconclusive. Clinical trials that include the analysis of fracture rates, especially in older patients, are needed to gather more evidence on the clinical implications of lower BMD in PKU patients.

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 Fuente: Nutrients . 2020 Jul 20;12(7):2154

Editorial: MDPI

 Año de publicación: 2020

Nº de páginas: 15

Tipo de publicación: Artículo de Revista

 DOI: 10.3390/nu12072154

ISSN: 2072-6643

Url de la publicación: https://doi.org/10.3390/nu12072154

Autores/as

DE CASTRO, MARÍA JOSÉ

DE LAMAS, CARMELA

SÁNCHEZ PINTOS, PAULA

COUCE, MARÍA LUZ