Sentences with phrase «reactive molecules in»

Free radicals are highly reactive molecules in your body that are missing an electron, or in basic terms, their structure is incomplete.

DENVER — With the flip of a cellular switch, reactive molecules in air pollution can turn immune responses in the lungs topsy - turvy.

Not exact matches

Peroxidases can produce highly reactive oxidized molecules in the presence of hydrogen peroxide.

Because the carbon atoms in a C36 fullerene must strain to form a sphere, the bonds between atoms are brittle; thus, the molecule is very reactive and quickly decomposes in air.

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.

Volcanic plumes were ideal crucibles for sparking stable nitrogen to form reactive compounds that led to the first organic molecules, chemists report in the 15 August Geophysical Research Letters.

In this case, he was testing the idea that a buildup of cellular damage caused by oxidation — technically, the chemical removal of electrons from a molecule by highly reactive compounds, such as free radicals — is the main mechanism behind aging.

Clar tried to synthesize this molecule — called triangulene — in solution, but failed because it was so reactive it immediately bound up with other triangulene fragments.

After the gas builds up in the atmosphere each night, sunlight quickly transforms it into reactive molecules called free radicals.

What industrial chemists did know was that by tinkering with a highly reactive molecule called a phenol they were able to devise countless synthetic chemicals for use in new materials.

The immune system may kick in when animals eat, releasing reactive oxygen molecules to kill microbes on food, helping to protect from disease.

Otherwise, it would be difficult to tell what the «normal» amount of circulating reactive oxygen molecules in the animal's body was.

«In the case where molecules are chemically reactive, one simply doesn't have time to study them in bulk samples: They decay away before they can be cooled further to observe interesting states,» Zwierlein sayIn the case where molecules are chemically reactive, one simply doesn't have time to study them in bulk samples: They decay away before they can be cooled further to observe interesting states,» Zwierlein sayin bulk samples: They decay away before they can be cooled further to observe interesting states,» Zwierlein says.

In their earlier work, the Colorado group observed a significant drawback of their ultracold potassium rubidium molecules: They were chemically reactive, and essentially came apart when they collided with other molecules.

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.

Highly reactive fluoride sticks to molecules in the tooth that become exposed when bacteria - produced acid attacks the teeth.

The cause of the damage is still poorly understood, but radiation is known to create highly reactive oxygen - containing molecules in the body.

Here, a reactive species, usually a negatively charged atom or molecule, attacks an organic molecule in a way that this molecule repels a currently bonded partner in order to create the new bond.

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 RSIn 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 RSin virus - induced epithelial damage in RSin RSV.

The practical consequence of roaming isomerization of this molecule is that it is thought to be followed by elimination of molecular bromine, leading to an increase of the reactive stock of this species in the atmosphere.

«Of all the toxic or reactive molecules that [solar] industry uses, silane has been involved in 10 fatalities in the last 20 years.

In a third study published online by Science on 6 April (www.sciencexpress.org), molecular geneticist Valter Longo of the University of Southern California in Los Angeles and colleagues battered a population of yeast mutants with heat or paraquat, a chemical that creates reactive oxygen moleculeIn a third study published online by Science on 6 April (www.sciencexpress.org), molecular geneticist Valter Longo of the University of Southern California in Los Angeles and colleagues battered a population of yeast mutants with heat or paraquat, a chemical that creates reactive oxygen moleculein Los Angeles and colleagues battered a population of yeast mutants with heat or paraquat, a chemical that creates reactive oxygen molecules.

While reactive oxygen species (ROS), can damage and kill cells — these molecules have also been implicated in normal biochemical processes.

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.

The auto - reactive B cells produced autoantibodies that mistakenly targeted proteins within their own body, in particular targeting immune inflammatory molecules called interferons and interleukins.

The fast - moving electrons in the plasma slam into these molecules, producing highly reactive species such as hydroxyl and nitric - oxide molecules.

In this case, they form naturally as ozone — a high - energy oxygen molecule — reacts with carbon chains that have double bonds, forming a compound that has two reactive pairs of electrons.

Physiologist Dino Giussani and colleagues at the University of Cambridge in the United Kingdom theorized that hypoxia promotes harm in the womb primarily through stress caused when the low level of oxygen creates an overload of highly reactive molecules known as free radicals.

For example, in the case of the protein SIN3A, a regulator of gene transcription, the small molecule that covalently binds to its reactive lysine blocks the protein's function by disrupting SIN3A's interaction with another protein, TGIF1 — an interaction implicated in some invasive breast cancers.

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 proteinIn 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 proteinin 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.

Typically, molecules like these are highly reactive with other chemicals, meaning they quickly break down in planetary atmospheres.

In reactive landing techniques, the ionized molecules hit the surface with more force than soft landing and react with the surface forming chemical bonds.

STEVEN BENNER: Radiation causes damage to DNA by way of specific molecules, in particular, reactive oxygen species.

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 agIn 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 agin 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.

In the experiment, researchers coated the metallic particles with a layer of reactive molecules and focused the ALS - produced infrared light onto the tiny tip (25 nanometers in its diameter) of the atomic force microscopIn the experiment, researchers coated the metallic particles with a layer of reactive molecules and focused the ALS - produced infrared light onto the tiny tip (25 nanometers in its diameter) of the atomic force microscopin its diameter) of the atomic force microscope.

Since its discovery in the early 1940s, the presence of CH + in interstellar space has been a mystery because it is extremely reactive and hence disappears more quickly than other molecules.

A major feature of the advanced nanotechnology to be implemented in nanofactories will be positional mechanosynthesis — precise mechanical control of how reactive molecules and molecular fragments interact.

The researchers showed that women who cut calories became more sensitive to the blood sugar — regulating hormone insulin and had a drop in the inflammation - associated molecule C - reactive protein.

Nitric oxide or NO (naturally found in the body) is a highly reactive gas molecule, that has a role of transporting information between cells (neurotransmitter).

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.

High levels of the bioflavonoid quercetin in prickly pear contributed to its free - radical - scavenging ability — the ability to neutralize reactive molecules that can damage cells.

Their protective effects were attributed, in part, to the avoidance of postprandial hyperglycemic peaks (4, 5) because recurrent postprandial hyperglycemia results in overproduction of reactive free radical molecules and greater release of inflammatory cytokines (4, 6).

Reactive oxygen species (ROS) are important molecules inall cells, but in high concentrations cause frequent mutations.

Research suggests that Vitamin C is a highly effective antioxidant and that small amounts can protect essential molecules in the body from free radical damage and reactive oxygen species generated during normal metabolism, as well as through exposure to toxins and pollutants.

You may have heard of free radicals, highly reactive and unstable molecules that can be pretty damaging to our body by attacking our cells, protein membranes, and DNA while aiding in the development of a health problems like cancer.

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.

After control for potential confounders, women in the highest quintile of PHVO intake had higher plasma concentrations of C - reactive protein (CRP; percentage difference from lowest quintile: 45 %; P for trend: < 0.01), tumor necrosis factor - α (TNF - α; 66 %; P for trend: < 0.01), interleukin - 6 (72 %; P for trend: < 0.05), and soluble intercellular adhesion molecule - 1 (sICAM - 1; 22 %; P for trend: < 0.01) than did women in the lowest quintile.

(Free radicals are forms of molecules that tend to be very reactive, and too many free radicals in the wrong place at the wrong time can do damage to our cells and tissue.)