Brazilian scientists have created a portable, disposable sensor capable of identifying a protein in saliva that is closely associated with mental health conditions such as depression, bipolar disorder, and schizophrenia. The innovation represents a step towards more accessible and non-invasive diagnostic tools, as reported by
Metropoles, a partner of TV BRICS.
The device measures levels of brain-derived neurotrophic factor (BDNF), a protein essential for neurone maintenance, memory and learning. Studies have linked changes in BDNF concentrations to psychiatric and neurological conditions, making it a crucial biomarker for mental health research.
The sensor consists of a flexible polymer strip with printed electrodes that interact with saliva samples. When connected to a small analyser, it quickly identifies BDNF concentrations, eliminating the need for blood tests or invasive procedures. Results can also be transferred to mobile devices, ensuring fast and user-friendly monitoring.
Researchers emphasise that one of the main advantages of the sensor is its affordability. Made from simple materials, it can be produced on a large scale and safely discarded after a single use.
Photo: anyaivanova /
iStock
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