Star-shaped glial cells, so-called astrocytes, are more than just a supporting cell of the brain. They are actively involved in learning processes and interact with the nerve cells. But what exactly is it that astrocytes do? Researchers at the University Hospital Bonn (UKB) and the University of Bonn are using a biophysical model to clarify how astrocytes interact with nerve cells to regulate rapid adaptation to new information. The results of the study have now been published in the renowned journal "Nature Communications Biology".

New research by the University Hospital Bonn (UKB) in cooperation with the University of Bonn has shown for the first time that certain early changes in patients with age-related macular degeneration (AMD) can lead to a measurable local loss of vision. This discovery could help to improve the treatment and monitoring of this eye disease in older patients, which otherwise slowly leads to central blindness, and to test new therapies.

Monocytes, a special type of white blood cell, secrete cytokines as inflammatory messengers that are crucial for an appropriate immune response. Researchers at the University Hospital Bonn (UKB) and the University of Bonn have now discovered that platelets, also known as thrombocytes, communicate with monocytes and increase their inflammatory capacity. By understanding the platelet-monocyte interaction, they hope to improve the treatment of immune disorders and associated diseases. The results of the study have now been published in the renowned journal "EMBO Molecular Medicine" and will be featured on the cover of August issue.

Researchers at the University of Bonn have isolated a DNA molecule that is suitable for combating allergic contact dermatitis in mice. What is known as an aptamer binds to certain immune system messenger substances, rendering them ineffective. This even works if the active ingredient is applied to the skin in the form of an ointment. The working groups involved hope that aptamer creams such as this could also be suitable for treating other skin conditions. The results have now been published in the journal Molecular Therapies - Nucleic Acids.

Loneliness is not a disease. And yet it is a significant health problem. Depression, heart disease or dementia - people who are permanently lonely have a higher risk of becoming ill. The team led by Dr. Jana Lieberz from the University Hospital Bonn (UKB), who also conducts research at the University of Bonn, and Prof. Dr. Dirk Scheele (Ruhr University Bochum) have investigated how loneliness can be specifically combated. In a controlled study, in which the universities of Oldenburg, Bochum, Freiburg and Haifa (Israel) were also involved, 78 women and men who felt lonely were given the so-called "cuddle hormone" oxytocin as a nasal spray. The effects that the researchers observed could help to alleviate loneliness and its potentially serious consequences in the future.

Researchers from the University of Southern Denmark, the Novo Nordisk Center for Adipocyte Signaling (SDU), the University of Bonn and the University Hospital Bonn (UKB) have found a protein that is responsible for turning off brown fat activity. This new discovery could lead to a promising strategy for safely activating brown fat and tackling obesity and related health problems. The results of the study have now been published in the journal „Nature Metabolism“.

Many bacteria produce substances to gain an advantage over competitors in their highly competitive natural environment. Researchers at the University Hospital Bonn (UKB), the University of Bonn and the German Center for Infection Research (DZIF) have discovered a new so-called lantibiotic, namely epilancin A37. It is produced by staphylococci that colonize the skin and acts specifically against their main competitors there, the corynebacteria. This specificity is presumably mediated by a very special mechanism of action, which the researchers were able to decipher in detail. Their results have now been published in the renowned ISME Journal.

Dendritic cells play an important role in setting the course of our immune system. However, what determines their heterogeneity and functional specialization is still not sufficiently understood. An international collaboration consisting of researchers from the University Hospital Bonn (UKB), the University of Bonn and the Technical University of Denmark, among others, has investigated the role of the transcription factor Bcl6 in dendritic cells in a mouse model and discovered that a subgroup is highly dependent on this protein. The findings contribute to a better understanding of immunological processes during infections, vaccinations, allergies and autoimmunity. The results have now been published in the renowned scientific journal "Nature Communications".