Category Biology/Biotechnology

3D Printing Polymers

a super-soft, super-elastic crosslinked elastomer
From left: the unlinked polymer ink, infrared light being applied to activate the crosslinks, and the final product — a super-soft, super-elastic crosslinked elastomer.
Photo Credit: 
ISABELLE CHABINYC

The material yields soft, elastic objects that feel like human tissue. Researchers in the labs of Christopher Bates, an assistant professor of materials at UC Santa Barbara, and Michael Chabinyc, a professor of materials and chair of the department, have teamed to develop the first 3D-printable “bottlebrush” elastomer. The new material results in printed objects that have unusual softness and elasticity — mechanical properties that closely resemble those of human tissue.

Conventional elastomers, i.e. rubbers, are stiffer than many biological tissues...

Read More

Study links exposure to Nighttime Artificial Lights with Elevated Thyroid Cancer Risk

Credit: marekr from Pixabay

Study links exposure to nighttime artificial lights with elevated thyroid cancer risk. People living in regions with high levels of outdoor artificial light at night may face a higher risk of developing thyroid cancer. The finding comes from a study published early online in CANCER, a peer-reviewed journal of the American Cancer Society.

Over the past century, nightscapes — especially in cities — have drastically changed due to the rapid growth of electric lighting. Also, epidemiological studies have reported an association between higher satellite-measured levels of nighttime light and elevated breast cancer risk...

Read More

Fungi in the Gut prime Immunity against Infection

Graphic depicting relationship between fungi in gut, antibody levels and CARD gene
Relationship between gut fungi, anti-fungal antibodies, CARD9 gene, and fungal immunity. Image courtesy of the Iliev lab.

Common fungi, often present in the gut, teach the immune system how to respond to their more dangerous relatives, according to new research from scientists at Weill Cornell Medicine. Breakdowns in this process can leave people susceptible to deadly fungal infections.

The study, published Feb. 5 in Cell, reveals a new twist in the complex relationship between humans and their associated microbes, and points the way toward novel therapies that could help combat a rising tide of drug-resistant pathogens.

The new discovery stemmed from work on inflammatory bowel disease, which often causes patients to carry larger than normal populations of fungi in their guts...

Read More

An Origami-inspired Medical Patch for Sealing Internal Injuries

paper-like shapes next to surgical stapler

Caption:MIT engineers have design paper-like medical tapes (shown here) that can fold around surgical tools and transform into soft, strong adhesives when pressed against tissues.
Credit: Felice Frankel

The patch, which can be folded around surgical tools, may someday be used in robotic surgery to repair tissues and organs. Many surgeries today are performed via minimally invasive procedures, in which a small incision is made and miniature cameras and surgical tools are threaded through the body to remove tumors and repair damaged tissues and organs. The process results in less pain and shorter recovery times compared to open surgery.

While many procedures can be performed in this way, surgeons can face challenges at an important step in the process: the sealing of internal wounds an...

Read More