Sentences with phrase «reactive molecules which»

Reactive oxygen species are highly reactive molecules which contain oxygen.

«Upon X-ray irradiation, they produce very reactive molecules which don't travel far from the injection site — they latch on and stay right where you put them,» Lin said.

An antibody seems in her hands the ultra representation of identity in the form of a reactive molecule which actually can even be reactive against oneself.

Not exact matches

The treatment consists of iodo - thiocyanate complexes, which are inspired by enzymes and reactive molecules produced by our immune system.

That's because it comes from plants, which are prolific producers of polyphenols, antioxidant compounds believed to mop up so - called free radicals, very reactive molecules that can damage DNA.

In the end, Liu replaced the original system's problem catalysts — which made a microbe - killing, highly reactive type of oxygen molecule — with cobalt - phosphorus, which didn't bother the bacteria.

Scientists have long assumed that wounded mitochondria release reactive oxygen molecules, which then damage DNA and proteins, increasing disease risk.

When metabolized, this hormone is broken up into molecules called reactive quinone species, which can damage DNA.

It suggests that tension, which stretches a catalyst's atomic lattice, should make a catalyst more reactive to molecules that naturally want to push the lattice apart.

It has been theorized that the major cause of bleaching is the result of chloroplast damage due to heat stress, which results in the production of toxic, highly reactive oxygen molecules during photosynthesis.

They found that soluble iron in the earliest oceans quickly combined with oxygen to form rust — forming reactive oxygen molecules, which damage biological tissue and make the cyananobacteria grow more slowly and produce less oxygen.

In addition, treatment with Korean red ginseng extract suppressed the expression of RSV - induced inflammatory genes and the formation of chemically reactive molecules containing oxygen, which play a role in virus - induced epithelial damage in RSV.

This fact makes vacuum UV light extremely useful for industrial applications from sterilizing medical devices to cleaning semiconductor substrates because when it strikes oxygen - containing molecules on a surface, it generates highly reactive oxygen radicals, which can completely destroy any microbes contaminating that surface.

Compared to skinnies, muscular men also tended to produce fewer infection - fighting white blood cells and less of an important immune molecule called C - reactive protein, which helps destroy pathogens.

To produce triangulene, the team began with a precursor molecule called dihydrotriangulene, which lacks the reactive unpaired electrons.

It's thought that this damage happens when photons (light particles) create free radicals, which are highly reactive molecules that can «poison» cells and kill them, Van Gelder said.

That light is absorbed by the chlorine - based molecules, which then excite nearby oxygen molecules, creating a highly reactive form of oxygen, known as singlet oxygen, that rips apart nearby biomolecules and kills the tumor cell.

Ultraviolet radiation spices things up as well: It heats the grains and breaks up some of the molecules into reactive fragments, which in turn bond with other fragments to form new kinds of molecules.

In another experiment, a more direct test of druggability, the researchers used a library of small molecules — broadly representing potential drug molecules — to see which could compete with the probe in binding covalently to reactive lysines on human proteins.

Increased glucose processing has long been thought to inflict damage on the mitochondria (the cell's power generators), which then produce large amounts of reactive oxygen molecules, which in turn leads to kidney disease.

The radiation triggers a shower of reactive oxygen compounds which are toxic to all sorts of parts of the cell: «Proteins, lipids, they chew up any biological molecule,» Lin said.

In a new paper published online today in Nature Chemistry («On - surface generation and imaging of arynes by atomic force microscopy»), scientists from IBM Research and CIQUS at the University of Santiago de Compostela, Spain, have confirmed the existence and characterized the structure of arynes, a family of highly - reactive short - lived molecules which was first suggested 113 years ago.

This primary response involves the production of reactive oxygen species (ROS), which are molecules that can act like tiny bombs when released by the plant cell at the offending pathogen.

Specifically, the research demonstrates that grape seed not only damages cancer cells» DNA (by means of an increase of reactive oxygen species), but also prevents the pathways which allow repair (as seen by reduced amounts of the DNA repair molecules Rad51 and Brca1 as well as DNA repair foci).

One reason might be the role of fat in inducing oxidative stress and creating free radicals, which are highly reactive atoms and molecules that damage DNA and cellular walls, ultimately killing heart muscle cells.

Previous research has also shown that short - term fasting can produce molecules called free radicals, which are highly reactive chemicals that can cause damage to the body at a cellular and may be associated with impaired organ function, cancer risk and accelerated aging.

Besides promoting immunogenicity of the thyroglobulin molecule, dietary iodine can enhance levels of reactive oxygen species (ROS), which lead to expression of cell adhesion molecules (ICAM - 1) that are crucial to the early phases of thyroid follicular inflammatory responses (3).

Free radicals are molecules with incomplete electron shells which make them more chemically reactive than those with complete electron shells.

Energy metabolism and the production of Reactive Oxygen Species (very small molecules that can result in significant damage to cell structures, of which include oxygen ions, free radicals and peroxides) are thought to underpin many nuerodegenerative disorders, and creatine is thought to enhance the brains ability to survive the metabolic and physical trauma associated with these conditions.

These unpaired electrons readily form free radical molecules which are chemically reactive and highly unstable.

Antioxidants help neutralize free radicals, which are highly reactive molecules with unpaired electrons that can damage DNA, cells, and tissues in the body.

Iron creates free radicals, which are reactive molecules that attack cell walls and DNA, causing disease.

These oxygen atoms are very reactive and tend to combine with any atoms or molecules with which they collide.

It does absorb infrared radiation and trap heat in the atmosphere, which is the definition of a greenhouse gas, but carbon monoxide is very reactive and soluble, so its molecules do not remain in the atmosphere for any significant time.