Category Biology/Biotechnology

Researchers at Duke Cancer Institute have tracked the missing T-cells in glioblastoma patients in the bone marrow, locked away and unable to function because of a process the brain stimulates in response to glioblastoma, to other tumors that metastasize in the brain and even to injury.
Credit: Alisa Weigandt for Duke Health

A mysterious lack of T-cells has hindered the immune system’s ability to fight glioblastoma. Researchers have tracked the missing T-cells in glioblastoma patients. They found them in abundance in the bone marrow, locked away and unable to function because of a process the brain stimulates in response to glioblastoma, to other tumors that metastasize in the brain and even to injury.

Glioblastoma brain tumors can have an unusual effect on the body’s immune system, often ca...

These are extracellular vesicles under the electron microscope. Credit: Helmholtz Zentrum München

Idiopathic pulmonary fibrosis (IPF) is an incurable lung disease of unknown origin with limited treatment options. Research suggests that the signaling molecule WNT5A plays a key role in the pathogenic process. Now a group of scientists from Helmholtz Zentrum München working with colleagues from the University of Denver have taken a further step towards uncovering the mechanisms responsible for the development of fibrosis: IPF is associated with the increase of extracellular vesicles that relay WNT5A signals to cells in the lungs...

Urinary sodium excretion, blood pressure, cardiovascular disease, and mortality: a community-level prospective epidemiological cohort study. The Lancet, 2018; 392 (10146): 496 DOI: 10.1016/S0140-6736(18)31376-X

Public health strategies should be based on best evidence. New research shows that for the vast majority of individuals, sodium consumption does not increase health risks except for those who eat > five grams a day, the equivalent of 2.5 teaspoons of salt. Fewer than 5% of individuals in developed countries exceed that level.

The large, international study also shows that even for those individuals there is good news...

HSP-specific T cells infiltrate the retinas and augment glaucomatous neurodegeneration

Unexpected findings show that the body’s own immune system destroys retinal cells. A new study from MIT and Massachusetts Eye and Ear has found that glaucoma may in fact be an autoimmune disorder. In a study of mice, the researchers showed that the body’s own T cells are responsible for the progressive retinal degeneration seen in glaucoma. Furthermore, these T cells appear to be primed to attack retinal neurons as the result of previous interactions with bacteria that normally live in our body.

The discovery suggests that it could be possible to develop new treatments for glaucoma by blocking this autoimmune activity, the researchers say...