Physicists pinpoint a simple mechanism that makes bacteria resistant to antibiotics

IMAGE: These are researchers Maikel Rheinstädter and Adree Khondker of McMaster University. view more  Credit: JD Howell, McMaster University Physicists at McMaster University have for the first time identified a simple mechanism used by potentially deadly bacteria to fend off antibiotics, a discovery which is providing new insights into how germs adapt and behave at a…

CRISPR gene editing makes stem cells ‘invisible’ to immune system

UC San Francisco scientists have used the CRISPR-Cas9 gene-editing system to create the first pluripotent stem cells that are functionally “invisible” to the immune system, a feat of biological engineering that, in laboratory studies, prevented rejection of stem cell transplants. Because these “universal” stem cells can be manufactured more efficiently than stem cells tailor-made for…

Hormone therapy may increase cardiovascular risk during gender transition

DALLAS, February 18, 2019 — Patients receiving hormone therapy as part of their gender-transition treatment had an elevated risk for cardiovascular events, including strokes, heart attacks and blood clots, according to a study published in the American Heart Association’s journal Circulation. The results are based on analysis of medical records of 3,875 Dutch individuals who…

Advancing therapy by measuring the ‘games’ cancer cells play

IMAGE: This is Jacob Scott, MD, Cleveland Clinic. view more  Credit: Cleveland Clinic February 18, 2019, Cleveland: Despite rapid advances in targeted therapies for cancer, tumors commonly develop resistance to treatment. When resistance emerges, tumor cells continue to grow unchecked, despite all attempts to slow cancer progression. While mutations in cancer cells significantly affect drug sensitivity,…

Children carry evidence of toxins from home flooring and furniture

IMAGE: Environmental Chemist Heather led a three-year study of in-home exposures to semi-volatile organic compounds (SVOCs) among 203 children from 190 families. view more  Credit: Duke Photo DURHAM, N.C. — Children living in homes with all vinyl flooring or flame-retardant chemicals in the sofa have significantly higher concentrations of potentially harmful semi-volatile organic compounds (SVOCs) in…

There’s a place for us: New research reveals humanity’s roles in ecosystems

VIDEO: Jennifer Dunne and Stefani Crabtree describe an ongoing investigation into the roles humans play in sustainable and unsustainable socio-ecological systems. Their collaboration with anthropologists, archaeologists, and ecologists is the first… view more  In two back-to-back symposia at the annual meeting of the American Association for the Advancement of Science in Washington, D.C., on Sunday, Feb.…