Life Sciences

Bioresearch

The opportunistic pathogen Pseudomonas aeruginosa in a special growth media. This bacteria can cause life-threatening infection, particularly in cystic fibrosis sufferers.  Image: Dr. Steve Diggle, the University of Nottingham, UK

Fighting Bacteria's Strength in Numbers

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Nottingham, UK (Scicasts) – Scientists at The University of Nottingham have opened the way for more accurate research into new ways to fight dangerous bacterial infections by proving a long-held theory about how bacteria communicate with each other.

Image: University of Leeds

Different Mechanisms of Pain Revealed

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Leeds, UK (Scicasts) – Researchers at the University of Leeds have found a previously unknown mechanism through which pain is signalled by nerve cells – a discovery that could explain the current failings in the drug development process for painkillers and which may offer opportunities for a new approach.

Dipak Sarkar, professor in the Department of Animal Sciences at the Rutgers School of Environmental and Biological Sciences and his research team have been able to take a new pharmacological approach to activate the immune cells to prevent cancer growth through stimulation of the opiate receptors found on immune cells. Image: Rutgers University

Researchers Discover Novel Approach to Stimulate Immune Cells

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New Brunswick, NJ (Scicasts) – Researchers at Rutgers University have uncovered a new way to stimulate activity of immune cell opiate receptors, leading to efficient tumour cell clearance.

Dipak Sarkar, professor in the Department of Animal Sciences at the Rutgers School of Environmental and Biological Sciences and his research team have been able to take a new pharmacological approach to activate the immune cells to prevent cancer growth through stimulation of the opiate receptors found on immune cells.

‘Switch’ to Boost Anti-Viral Response to Fight Infectious Diseases Discovered

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Singapore (Scicasts) – Singapore scientists from Bioprocessing Technology Institute (BTI) under the Agency of Science, Technology and Research (A*STAR), have  identified the molecular ‘switch’ that directly triggers the body’s first line of defence against pathogens, more accurately known as the body’s “innate immunity”. The scientists found that this ‘switch’ called Bruton’s tyrosine kinase (BTK) when turned on, activates the production of interferons - a potent class of virus killers that enables the body to fight harmful pathogens such as dengue and influenza viruses.

This is Michael Caliguiri, M.D., director of Ohio State's Comprehensive Cancer Center and Susan McClory, research fellow.  Image: Ohio State's James Cancer Hospital & Solove Research Institute

Tonsils Make T-cells, Too, Study Shows

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Columbus, OH (Scicasts) – A new study provides evidence that a critical type of immune cell can develop in human tonsils. The cells, called T lymphocytes, or T cells, have been thought to develop only in the thymus, an organ of the immune system that sits on the heart.

“That finding explained how this compound can be both a potent inhibitor of PDI and a safe food supplement,” senior author Robert Flaumenhaft. “Our next questions were: Is this compound anti-thrombotic? Can it prevent blood clots?” Image: Bruce Wahl/BIDMC Media Services

Flavonoid Compound Can Prevent Blood Clots

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Cambridge, MA (Scicasts) – A compound called rutin, commonly found in fruits and vegetables and sold over the counter as a dietary supplement, has been shown to inhibit the formation of blood clots in an animal model of thrombosis.

Research Reveals Novel Transport Mechanism for Large Ribonucleoproteins

Research Reveals Novel Transport Mechanism for Large Ribonucleoproteins

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Worcester, MA (Scicasts) – The movement of genetic materials, such as RNA and ribosomes, from the nucleus to the cytoplasm is a critical component in a cell's ability to make the proteins necessary for essential biological functions. Until now, it was believed the nuclear pore complex was the sole pathway between the cell nucleus and cytoplasm for these materials.

Ron Davis, Ph.D., is chair of the Scripps Research Institute's Department of Neuroscience.  Image: Photo courtesy of The Scripps Research Institute.

Scientists Identify Neurotranmitters that Lead to Forgetting

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Jupiter, FL, (Scicasts) – While we often think of memory as a way of preserving the essential idea of who we are, little thought is given to the importance of forgetting to our wellbeing, whether what we forget belongs in the "horrible memories department" or just reflects the minutia of day-to-day living.

This is Huricha Baigude, Ph.D., postdoctoral researcher and first author of the study.  Image: Sanford-Burnham Medical Research Institute

New Laboratory Technique Captures microRNA Targets

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La Jolla, CA (Scicasts) – Human cells are thought to produce thousands of different microRNAs (miRNAs)―small pieces of genetic material that help determine which genes are turned on or off at a given time. miRNAs are an important part of normal cellular function, but they can also contribute to human disease―some are elevated in certain tumours, for example, where they promote cell survival.

Coloured patches represent parallelogram outlines around pairs of triangles that have formed chiral super-structures. Parallelograms having different 'handedness' and orientations are colour-coded and superimposed over each other. Image: Thomas G. Mason and Kun Zhao

Scientists Unlock Mystery of How 'Handedness' Arises

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Los Angeles, CA (Scicasts) – The overwhelming majority of proteins and other functional molecules in our bodies display a striking molecular characteristic: They can exist in two distinct forms that are mirror images of each other, like your right hand and left hand. Surprisingly, each of our bodies prefers only one of these molecular forms.

Professor Michael McHeyzer-Williams. Image: Scripps Research Institute

Scientists Show How Memory B Cells Stay 'In Class' to Fight Different Infections

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La Jolla, CA (Scicasts) – Scientists at The Scripps Research Institute have made an important discovery about the internal programming of B cells, the immune cells that make antibodies against infections. The finding opens the way for the development of vaccines that can work more efficiently and hints at therapies for conditions in which B cells cause harm―such as the autoimmune disease lupus erythymatosus, severe allergies, and B-cell lymphomas.

This is a photomicrograph of cirrhotic liver tissue, with extensive fibrotic scarring (stained blue).  Image: UC San Diego School of Medicine

Scarring Cells Revert to Inactive State as Liver Heals

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San Diego, CA (Scicasts) – An international team of scientists, led by researchers at the University of California, San Diego School of Medicine, report that significant numbers of myofibroblasts – cells that produce the fibrous scarring in chronic liver injury – revert to an inactive phenotype as the liver heals. The discovery in mouse models could ultimately help lead to new human therapies for reversing fibrosis in the liver, and in other organs like the lungs and kidneys.