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Atom probe tomography reveals fluoride patterns in aging teeth

Teeth are essential for helping people break down the food they eat and are protected by enamel, which helps them withstand the large amount of stress they experience as people chew away. Unlike other materials in the body, enamel has no way to repair damage, which means that as we age, it risks becoming weaker with time.

20 Dec 2024

Study offers a promising regenerative therapy for osteoarthritis

A new research paper was published in Aging (listed by MEDLINE/PubMed as "Aging (Albany NY)" and "Aging-US" by Web of Science) Volume 16, Issue 21 on November 22, 2024, entitled, "Anti-aging effect of extracellular vesicles from mesenchymal stromal cells on senescence-induced chondrocytes in osteoarthritis."

18 Dec 2024

Scientists detect rare H5N1 avian flu strain in Australian child after travel to India

A 2.5-year-old returning to Australia from India was infected with a reassortant H5N1 virus, revealing genetic mixing between avian influenza clades and gaps in South Asian surveillance.

18 Dec 2024

Breakthrough discovery opens doors for targeting adhesion GPCRs with drugs

Almost 35% of drugs approved by the Food and Drug Administration work by targeting G protein-coupled receptors (GPCRs), proteins embedded in cell membranes that allow cells to communicate with each other.

18 Dec 2024

Breakthrough in understanding influenza's protective coat opens path to new treatments

To fight the virus that causes influenza, one of the avenues being explored by scientists is the development of drugs capable of destabilizing its genome, made up of eight RNA molecules.

17 Dec 2024

Key to LDL clearance uncovered: Structural details of apoB100-LDLR binding emerge

Researchers reveal the structural details of apoB100's interaction with LDL receptors, offering insights into LDL dimerization and potential treatments for familial hypercholesterolemia.

12 Dec 2024

Caltech develops microrobots for precise drug delivery

In the future, delivering therapeutic drugs exactly where they are needed within the body could be the task of miniature robots. Not little metal humanoid or even bio-mimicking robots; think instead of tiny bubble-like spheres.

11 Dec 2024

New biomaterials improve signal-to-noise ratio in brain pacemakers

Two years ago, a medical professional approached scientists at the University of Tabriz in Iran with an interesting problem: Patients were having headaches after pacemaker implants. Working together to investigate, they began to wonder if the underlying issue is the materials used in the pacemakers.

11 Dec 2024

Interim analysis of STOMP study finds no efficacy for tecovirimat in mild to moderate Mpox cases

The antiviral drug tecovirimat did not reduce the time to lesion resolution or have an effect on pain among adults with mild to moderate clade II mpox and a low risk of developing severe disease, according to an interim data analysis from the international clinical trial called the Study of Tecovirimat for Mpox (STOMP).

10 Dec 2024

Metabolic imaging detects ovarian cancer subtypes and predicts chemotherapy response

Study demonstrates how metabolic imaging differentiates high and low oxidative phosphorylation (OXPHOS) subtypes of high-grade serous ovarian cancer (HGSOC). By assessing metabolic activity, it also identifies early and variable responses to chemotherapy, improving precision in treatment strategies.

10 Dec 2024

Reimagining axons with the pearls-on-a-string model

In a provocative new study, scientists challenge a fundamental tenet in neuroscience about the shape of axons -- the long, thin filaments radiating from nerve cells that transmit electrical signals from cell to cell – and propose a new model for understanding how information is transmitted in the brain.

6 Dec 2024

New research sheds light on how monkeys avoid hepatitis B infection

Hepatitis B virus (HBV) infection is a leading cause of chronic liver diseases, that spreads among individuals through blood or body fluids.

4 Dec 2024

New study sheds light on the molecular basis of gene expression

An international research collaboration has shed new light on the molecular basis of gene expression, the fundamental biological process that underpins how all organisms use their genetic information.

2 Dec 2024

Study challenges long-standing understanding of axon structure

Biology textbooks may need a revision, say Johns Hopkins Medicine scientists, who present new evidence that an armlike structure of mammalian brain cells may be a different shape than scientists have assumed for more than a century.

2 Dec 2024

New insights into how cells generate microRNAs

It's a big year for microRNAs. The 2024 Nobel Prize in Physiology or Medicine went to Victor Ambros and Gary Ruvkun, who discovered the first microRNA in 1993.

2 Dec 2024

Bacteria modify their ribosomes in response to the antibiotics

Bacteria modify their ribosomes when exposed to widely used antibiotics, according to research published today in Nature Communications. The subtle changes might be enough to alter the binding site of drug targets and constitute a possible new mechanism of antibiotic resistance.

29 Nov 2024

Advanced microscopy reveals how ribosomes attach to mRNA for protein synthesis

Within a cell, DNA carries the genetic code for building proteins. To build proteins, the cell makes a copy of DNA, called mRNA.

28 Nov 2024

New dropletronic devices could transform bioengineering and medicine

Oxford University researchers have made a significant step towards realizing a form of 'biological electricity' that could be used in a variety of bioengineering and biomedical applications, including communication with living human cells.

28 Nov 2024

Research sheds light on how fat cells safely enlarge to store energy

A team at the Centro Nacional de Investigaciones Cardiovasculares (CNIC), led by Professor Miguel Ángel del Pozo Barriuso, who heads the Mechanoadaptation and Caveolae Biology group at the CNIC, has identified an essential mechanism in fat cells (adipocytes) that enables them to enlarge safely to store energy.

28 Nov 2024

Unmasking the secrets of bacterial DNA supercoiling

Researchers from Durham University, Jagiellonian University (Poland) and the John Innes Centre have achieved a breakthrough in understanding DNA gyrase, a vital bacterial enzyme and key antibiotic target.

26 Nov 2024