Tag: Materials

Peptide Particles Ferry Drugs Across Blood-Brain Barrier

Most drugs, genetic materials, and other therapeutic agents are very difficult to use inside the brain because of the blood-brain barrier. There have been attempts to use ultrasound and microbubbles to create temporary passages through the barrier, including as a possible therapy for Alzheimer’s disease, but this is approach is not easy or id (Read more...)

New Chip for Microwave Imaging of Body

Today’s clinicians are limited to a few imaging modalities, primarily X-ray, CT, MRI, and ultrasound. Microwaves, in principle, can also be used as a useful way to look inside the body. Microwave radiation is non-ionizing, so should be safer than X-rays, but in practice microwave imagers, because of the electronics inside, have remained bulky (Read more...)

Implantable Nanolasers for Tissue Imaging, Neurotherapy

A variety of imaging techniques and technologies, such as optogenetics, could benefit from devices that can emit visible laser light from inside tissues. Conventional lasers are too large, while nanolasers tend to be inefficient, heating up too much, and typically require damaging ultraviolet light to power them. Now, researchers at Northwestern an (Read more...)

Hydrogel Mimics of Heart Tissue to Study Cardiac Reshaping Following Aortic Valve Implantation

Transcatheter aortic valve replacement (TAVR) procedures have become a popular way of treating aortic valve stenosis, a condition in which the valve stiffens and worsens cardiac function. Following implantation of a prosthetic valve, the hearts of patients tend to undergo significant reconstruction around the treatment site, but the mechanics of th (Read more...)

Bacterial Swarmbots to Produce Biologic Drugs

Biologics, being a group of drugs synthesized from biological sources, are often produced using bacteria. The manufacturing processes are usually slow and laborious, though they do benefit from economies of scale. Producing small quantities of biologics is typically limited to research labs, and even there it is limited in scope. Researchers at Duk (Read more...)

Magnetically Controlled Microbots for Drug Delivery and Hyperthermia Therapy in Cancer

Researchers in Daegu Gyeongbuk Institute of Science and Technology in South Korea have developed biodegradable microrobots that can be magnetically controlled to deliver drugs and provide hyperthermia treatment at the site of a tumor. This latest research effort attempts to provide a delivery option for two different therapy pypes by creating biode (Read more...)