ArticleJournal of inherited metabolic disease2007
Noninvasive measurement of phenylalanine by iontophoretic extraction in patients with phenylketonuria.
Article in Journal of inherited metabolic disease, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed, 13 citations in OpenAlex.
- Interindividual- and blood-correlated sweat phenylalanine multimodal analytical biochips for tracking exercise metabolism.Nature communications · 2024Article
- Epidermal Wearable Biosensors for the Continuous Monitoring of Biomarkers of Chronic Disease in Interstitial Fluid.Micromachines · 2023Review
- New Strategies for the Treatment of Phenylketonuria (PKU).Metabolites · 2014Review
- Reverse iontophoresis of amino acids: identification and separation of stratum corneum and subdermal sources in vitro.Pharmaceutical research · 2009Article
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Authors and funding
11 authors at 2 institutions in 1 country.
Funding
Abstract
Phenylketonuria is an autosomal recessive disorder characterized by elevated concentrations of phenylalanine. Elevated phenylalanine concentrations can impair intellectual functions and the disease is treated with a lifelong diet and frequent monitoring of plasma phenylalanine concentrations. Previous in vitro studies have demonstrated the feasibility of iontophoretically enhanced transdermal transport of phenylalanine. Here we evaluate the feasibility of transdermal iontophoretic extraction of phenylalanine in vivo. Phenylalanine was iontophoretically extracted from the skin of healthy volunteers and of patients with phenylketonuria for up to 6 h and concentrations were compared with those measured in plasma. The amount of phenylalanine iontophoretically extracted from the skin declined over time, suggesting contribution of phenylalanine from the skin in the initial extraction. Phenylalanine iontophoretically extracted from skin correlated with plasma phenylalanine levels at plasma levels above 300 micromol/L. This correlation supports the feasibility of iontophoretic phenylalanine extraction for monitoring phenylketonuria.
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Registered trials
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