Category Health/Medical

Osteolectin (Clec11a), reverses osteoporosis in mice and has implications for regenerative medicine.

A team of scientists at the Children’s Medical Center Research Institute at UT Southwestern (CRI) discovered a new bone-forming growth factor, Osteolectin (Clec11a), which reverses osteoporosis in mice and has implications for regenerative medicine. Although Osteolectin is known to be made by certain bone marrow and bone cells, CRI researchers are the first to show Osteolectin promotes the formation of new bone from skeletal stem cells in the bone marrow. The study, published in eLife, also found that deletion of Osteolectin in mice causes accelerated bone loss during adulthood and symptoms of osteoporosis, such as reduced bone strength and delayed fracture healing.

“These results demonstra...

Research subjects at the University of Minnesota fitted with a specialized noninvasive brain cap were able to move the robotic arm just by imagining moving their own arms. Credit: University of Minnesota

Researchers have made a major breakthrough that allows people to control a robotic arm using only their minds. The research has the potential to help millions of people who are paralyzed or have neurodegenerative diseases. “This is the first time in the world that people can operate a robotic arm to reach and grasp objects in a complex 3D environment using only their thoughts without a brain implant,” said Bin He, University of Minnesota biomedical engineering professor. “Just by imagining moving their arms, they were able to move the robotic arm.”

The noninvasive technique, EEG based brai...

A ring of six proteins known as a helicase surrounds the DNA strands at a special location known as origin DNA. Each of the six proteins is in distinct color, with origin DNA in the center. Credit: Xiaojiang Chen, USC

Recipe for Replication: 2 DNA strands, 1 ring of proteins. Melt. For years, scientists have puzzled over what prompts the intertwined dsDNA to open its 2 strands and then start replication. Knowing this could be the key to understanding how organisms, from healthy cells to cancerous tumors replicate and multiply for their survival. A group of USC scientists believe they have solved the mystery. Replication is prompted by a ring of proteins that bond with the DNA at a location called “origin DNA...

An example of a small, superficial BCC lesion that might be treated with imiquimod. Credit: Journal of Investigative Dermatology

Basal cell carcinoma (BCC) is the most common form of human cancer. With a growing aging population, BCC rates are climbing at an alarming rate, with reported cases rising by as much as 10% per year. A new study examines the effectiveness of imiquimod, a topical skin cream used to treat low-risk BCC lesions, over a five-year period. Imiquimod success rates were sustained for the extended study period and did not promote lesion reoccurrence.

Currently, the gold standard of treatment for BCC is excisional or Mohs surgery, both of which require a dermatologist or plastic surgeon...