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In contrast to what has been previously believed, development of blood stem cells to mast cells, a type of specialised immune cell, does not depend on a growth factor called stem cell factor. This has been demonstrated in a new collaborative study by researchers at Karolinska Institutet and Uppsala University, and published in the scientific journal Blood. The results could pave the way for new treatments for certain types of blood diseases.

Obesity and reduced insulin sensitivity are common in polycystic ovary syndrome, PCOS. New research based on animal studies, and to be published in the journal PNAS, reveals that the hormone adiponectin can protect against these changes.

The dynamics among certain so-called G protein-coupled receptors, of vital importance for the function of cells in the body, are different than previously believed. This has been reported by researchers from Karolinska Institutet in the journal Nature Communications. As these types of receptors are the target for many different medicines, the new finding opens the doors to completely new opportunities within pharmacology and pharmaceutical development.

Infections in surgically implanted heart valves are more common in patients who have been given a biological prosthetic valve than in those with a mechanical one, a study from Karolinska Institutet published today in the journal Circulation shows.