macrophages tagged posts

Obesity leads to a Complex Inflammatory Response inside Fat Tissue, study finds

Obesity leads to a complex inflammatory response inside fat tissue
Credit: JCI Insight (2023). DOI: 10.1172/jci.insight.171701

Fat tissue, for as much as it’s been vilified, is an incredibly complex and essential bodily organ involved in energy storage and hormone production, among other functions. Yet, modern lifestyles have led to a worldwide epidemic of obesity, and a corresponding increase in related conditions like type 2 diabetes and cardiovascular disease.

Researchers are attempting to uncover the basics of how fat tissue is structured and, specifically, inflammation associated with obesity, in the hopes of unlocking the connection between the accumulation of fat and poor health outcomes.

A new study from Lindsey Muir, Ph.D., Ph.D...

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Researchers Find that Targeting Immune Cells May Help Treat Atrial Fibrillation

New study finds that macrophages and macrophage-produced proteins contribute to heartbeat irregularities. Targeting these cells may therefore represent a promising strategy to treat and prevent AFib.

Current treatments for atrial fibrillation (AFib), a common heart condition characterized by fast and irregular beats that can lead to stroke and heart failure, have multiple side effects and are ineffective for preventing AFib recurrence.

New research led by investigators at Massachusetts General Hospital (MGH) and published in Science reveals that certain immune cells play a major role in the development of AFib. Targeting these cells may therefore represent a promising strategy to treat and prevent AFib.

For the work, senior author Matthias Nahrendorf, MD, PhD, an investigator...

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Sugar-Coated Nanoparticles Target Macrophages, Reverse Pulmonary Fibrosis

Stock: sugar, granulated sugar, white sugar (https://pixabay.com/images/id-2510536/)

Nanoparticle platform delivers a nucleotide that blocks production of scar-promoting protein. Scientists at the University of Illinois Chicago have developed a treatment for pulmonary fibrosis by using nanoparticles coated in mannose — a type of sugar — to stop a population of lung cells called macrophages that contribute to lung tissue scarring. The cell-targeting method holds promise for preventing this severe lung scarring disease, which can result in life-threatening complications like shortness of breath.

The researchers say that the treatment is not yet ready to be tested in clinical trials, but its success in relevant animal models is a promising sign that it may be possible to treat the dise...

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Platelets Exacerbate Immune Response

Right click to download: Platelets (green)
Platelets (green) contribute to the activation of inflammasomes in human macrophages (red; nuclei: blue) and thus to an increased IL-1 production. © artistic representation (based on microscopic images): B. Franklin / L. Ribeiro/UKB

Platelets not only play a key role in blood clotting, but can also significantly intensify inflammatory processes. This is shown by a new study carried out by scientists from the University of Bonn together with colleagues from Sao Paulo (Brazil). In the medium term, the results could open up new ways to treat autoimmune diseases. They have now been published in the journal Cell Reports.

For a long time, the role of platelets appeared to be clear: in the event of an injury, they adhere to the wound and stick to each other to rapidly stop the bleeding...

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