New sweat stickers may streamline diagnosis, treatment of cystic fibrosis in in pediatric patients

Kid With Cystic Fibrosis Lying In A Hospital Bed With Oxygen Mask And Plush Toy    Photographee.eu A1 1fea469355c34ada922185b319b527da 620x480
Children's Health

New “sweat stickers” may streamline the early diagnosis of cystic fibrosis by enabling scientists to easily gather and analyze sweat from the skin of infants and children. The stickers matched the performance of previous, more cumbersome devices when tested with 51 subjects, suggesting the stickers could address design obstacles that have held back the diagnosis and treatment of cystic fibrosis in pediatric patients.

Diagnosing cystic fibrosis in infancy or childhood is critical to achieve good outcomes, as current treatments must be given early to extend lifespans and alter the course of the disease. Many current diagnostics work by detecting levels of chloride in sweat, which are elevated in cystic fibrosis patients. However, these tests must often be repeated and use unwieldy wrist-wrapped devices, making them impractical for infants with soft skin and low levels of sweat.

To address this need, Tyler Ray and colleagues developed their sweat stickers, which are soft microfluidic devices with a multilayered design that can conform to the skin of both infants and adults. The stickers rapidly collect and store sweat from the skin, which scientists can then analyze using a smartphone application. The stickers collected sweat as effectively as a traditional method named MSCS in a pilot study with 18 healthy subjects and 33 patients ranging from 2 months to 51 years old. Unlike MSCS, the stickers gathered enough sweat to avoid any repeated tests and did not cause uncomfortable skin indentations in infants.

The researchers call for larger studies to further establish their platform’s accuracy and precision.

Journal reference:

Ray, T.R., et al. (2021) Soft, skin-interfaced sweat stickers for cystic fibrosis diagnosis and management. Science Translational Medicine. doi.org/10.1126/scitranslmed.abd8109.

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