News tagged with damaged cells
What makes a worm say 'yuck'
Researchers at Harvard-affiliated Massachusetts General Hospital (MGH) say they have uncovered a way that animals detect pathogens in their bodies that allows their systems to respond before cellular damage ...
May 15, 2012 |
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Researchers have a natural sidekick that may resolve the antibiotic-resistant bacteria dilemma
Antibiotic-resistant bacteria continue to be a global concern with devastating repercussions, such as increased healthcare costs, potential spread of infections across continents, and prolonged illness.
Apr 25, 2012 |
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How muscle cells seal their membranes
Every cell is enclosed by a thin double layer of lipids that separates the distinct internal environment of the cell from the extracellular space. Damage to this lipid bilayer, also referred to as plasma membrane, ...
Mar 14, 2012 |
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Are silver nanoparticles harmful?
Silver nanoparticles cause more damage to testicular cells than titanium dioxide nanoparticles, according to a recent study by the Norwegian Institute of Public Health. However, the use of both types may affect testicular ...
Nanotechnology / Bio & Medicine
Mar 14, 2012 |
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Mapping of protein inhibitors facilitates development of tailor-made anticancer agents
(PhysOrg.com) -- A team of researchers at Karolinska Institutet in Sweden has generated a map over the effects of small drug-like molecules on PARP1 and other similar proteins in the body. This map may explain the mechanism ...
Feb 20, 2012 |
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Scientists identify novel approach to view inner workings of viruses
Since the discovery of the microscope, scientists have tried to visualize smaller and smaller structures to provide insights into the inner workings of human cells, bacteria and viruses. Now, researchers at the National Institute ...
Jan 12, 2012 |
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DNA damage across a cellular barrier depends on barrier thickness
(PhysOrg.com) -- The use of nanoparticles in medicine is ever increasing and it is important to understand the effects these particles might have on human tissues and health in general.
Nanotechnology / Bio & Medicine
Dec 13, 2011 |
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When inflexibility is counterproductive: Mechanism of UV-induced DNA Dewar lesion revealed
Excessive exposure to ultraviolet (UV) radiation of sunlight can result in skin damage and may even induce skin cancers. Irradiation with UV light causes mutations in the DNA, which can interfere with or even inhibit the ...
Nov 28, 2011 |
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Study identifies a key molecular switch for telomere extension by telomerase
Researchers at the University of Illinois at Chicago College of Medicine describe for the first time a key target of DNA damage checkpoint enzymes that must be chemically modified to enable stable maintenance of chromosome ...
Nov 23, 2011 |
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How old yeast cells send off their daughter cells without the baggage of old age
The accumulation of damaged protein is a hallmark of aging that not even the humble baker's yeast can escape. Yet, aged yeast cells spawn off youthful daughter cells without any of the telltale protein clumps. ...
Nov 23, 2011 |
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Do bacteria age? Biologists discover the answer follows simple economics
When a bacterial cell divides into two daughter cells and those two cells divide into four more daughters, then 8, then 16 and so on, the result, biologists have long assumed, is an eternally youthful population of bacteria. ...
Oct 27, 2011 |
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Good housekeeping maintains a healthy liver
Differences in the levels of two key metabolic enzymes may explain why some people are more susceptible to liver damage, according to a study in the October 17 issue of the Journal of Cell Biology.
Oct 17, 2011 |
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Biochemists identify how tissue cells detect and perfect
Scientists have discovered how cells detect tissue damage and modify their repair properties accordingly. The findings, published today [6 October] in the journal Developmental Cell, could open up new opportunities for im ...
Oct 06, 2011 |
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The body rids itself of damage when it really matters
Although the body is constantly replacing cells and cell constituents, damage and imperfections accumulate over time. Cleanup efforts are saved for when it really matters. Researchers from the University of Gothenburg, Sweden, ...
Sep 20, 2011 |
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Cellular metabolism self-adapts to protect against free radicals
Oxygen-consuming organisms obtain energy through cellular respiration, which is the transformation of carbohydrates and oxygen into carbon dioxide and water. This process also produces toxic oxygen radicals which must be ...
Sep 07, 2011 |
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