Scientists develop new smart sensor to monitor drug dosage for Parkinson’s disease

New Delhi: Scientists have developed a smartphone-based sensor system designed to help manage Parkinson’s disease by accurately monitoring L-dopa levels in the body.

This user-friendly and affordable device, developed by the Institute of Advanced Study in Science and Technology (IASST), provides a quick and efficient method for adjusting drug dosage, ensuring that patients receive the optimal amount of medication to control their symptoms effectively.

Parkinson’s disease, a progressive neurological disorder, is characterized by the gradual loss of neuron cells, leading to a significant drop in dopamine levels. L-dopa, a precursor to dopamine, is commonly used as a treatment to help replenish these levels. However, finding the right dosage is critical. Too little L-dopa can lead to a return of Parkinson’s symptoms, while too much can cause serious side effects, including dyskinesia, paranoia, and low blood pressure.

Given the importance of maintaining an optimal L-dopa level in patients, IASST researchers have developed a portable fluorescence sensor system. The system utilizes a turn-on fluorescence mechanism that can detect low levels of L-dopa in biological fluids, such as blood plasma, sweat, and urine. The sensor is built using a silk-fibroin protein nano-layer derived from Bombyx mori silk cocoons, which is coated onto reduced graphene oxide nanoparticles. This creates a core-shell structure that produces strong photoluminescence, making it highly effective at detecting L-dopa.

The sensor can measure L-dopa levels within a range of 5 μM to 35 μM, with detection limits as low as 95.14 nM in blood plasma, 93.81 nM in sweat, and 104.04 nM in urine. These results are captured and analyzed using a smartphone app, which evaluates the concentration of L-dopa by interpreting changes in the RGB values of images taken during the sensing process.

This innovation represents a major advancement in Parkinson’s disease management, especially for patients in remote areas lacking access to advanced medical equipment. The device is portable, cost-effective, and simple to use, making it a valuable tool for healthcare providers seeking to optimize treatment for Parkinson’s patients. By detecting low L-dopa levels in real-time, the sensor can help adjust the required dosage of medication, improving patient outcomes and enhancing quality of life.