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New Microscope To Offer Option for Drug Discovery and Safety

by Ramya Rachamanti on March 1, 2019 at 4:19 PM
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New Microscope To Offer Option for Drug Discovery and Safety

A new unique kind of microscope developed by Purdue University team could give doctors a better idea of how safely and effectively a drug works in the body.

This microscope was developed based on concepts of phase-contrast microscopy, which involves using optical devices to view molecules, membranes or other nanoscale items that may be too translucent to scatter the light involved with conventional microscopes.

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"One of the problems with using the available microscopes or optical devices is that they require a point of reference for the scattered light, since the object being viewed is too optically transparent to scatter the light itself," said Garth Simpson, a professor of analytical and physical chemistry in Purdue's College of Science, who led the research team.

"We created a unique kind of microscope that stacks the reference object and the one being examined on top of each other with our device, instead of the conventional approach of having them side by side."
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The Purdue microscope uses technology to interfere light from a sample plane and a featureless reference plane, quantitatively recovering the subtle phase shifts induced by the sample. The work is published in Optics Express.

The Purdue team created their device by adding just two small optics to the base design of a conventional microscope. The change allows researchers to gather better information and data about the object being viewed.

"The microscope we have created would allow for better testing of drugs," Simpson said. "You could use our optical device to study how quickly and safely some of the active ingredients in a particular medication dissolve. They may crystallize so slowly that they pass through the body before dissolving, which significantly lowers their effectiveness."

Simpson said the microscope developed at Purdue could also be used for other types of biological imaging, including the ability to study individual cells and membranes from the body for various medical testing.

Their work aligns with Purdue's Giant Leaps celebration, celebrating the university's global advancements in health as part of Purdue's 150th anniversary. Health research, including advanced biological imaging, is one of the four themes of the yearlong celebration's Ideas Festival, designed to showcase Purdue as an intellectual center solving real-world issues.

Simpson has worked closely with the Purdue Office of Technology Commercialization on a number of patented technologies including this one developed in his lab.



Source: Eurekalert
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