Sentences with phrase «of reactive compounds»

Not exact matches

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.

Ocean water permeating the porous rock of the core could be exposed to ionizing radiation and undergo radiolysis, producing molecular hydrogen and reactive oxygen compounds.

The machine effectively detected ninhydrin - reactive nitrogen, one of the telling compounds of decomposition, in both sites as the animals disintegrated over the next 20 weeks.

Johnson, along with study co-author and post-doctoral researcher Jingyun Ye at the University of Pittsburgh, examined a series of eight different functional groups of Lewis acid and base pairs (Lewis pairs for short), which are highly reactive compounds often used as catalysts.

One such oxygen - removing agent is rocket fuel, scientists from Rutgers University found specifically, vapors of hydrazine, a highly reactive and toxic compound.

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.

One possibility for how that happens, says Hekimi, is that slow cellular metabolism delays the normal buildup of metabolic byproducts, such as reactive compounds known as free radicals, that are toxic to cells.

Air monitoring by researchers in 2000 found levels of volatile organic compounds — highly reactive ozone precursors such as benzene, known as VOCs — were 10 to 100 times higher than what had previously been estimated.

What she came up with was, as the study describes it, «the first comprehensive and consistent estimates of the global emissions of greenhouse gases, particulate matter, reactive trace gases, and toxic compounds from open waste burning.»

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.

Although gold nanoparticles are inert, the reactive compounds found in nano - pollutants in the air could have all sorts of harmful effects, Miller says.

Persistent hyperglycemia in diabetes mellitus results in an accumulation of a series of reactive α - dicarbonyl compounds (α - DCs, e.g. glyoxal / GO, methylglyoxal / MGO, 3 - deoxyglucosone / 3DG) and α - DC - derived metabolites, called advanced glycation end products (AGEs).

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.

Sep. 14, 2017 — Blocking acid reflux - induced production of reactive oxygen compounds may be a useful strategy for preventing DNA damage and decreasing the risk of esophageal cancer.

* p < 0.05, (B) Induction of reactive oxygen species (ROS) by HPP compounds in HepG2 cells.

Based on this method of compound activity classification, we identified a class of thiol - reactive (electrophilic) HMOX1 inducing compounds, exemplified by HPP - 1014.

Levels of ROS were measured in HepG2 cells following exposure to either HPP - 4382 or curcumin, a highly reactive electrophilic compound.

Thiol - reactive electrophilic compounds often increase ROS levels in cells, as a consequence of their ability to deplete glutathione.

The functional disruption leads to oxidative stress inside the cell; an accumulation of highly reactive oxygen compounds takes place and a large number of the cell's molecules are damaged.

Also well established is the fact that the glutathione antioxidant system is the most important system in our bodies (Meister, 1994) when it comes to the destruction of reactive oxygen compounds (very potent free radicals).

Both antioxidant compounds work reducing the proliferation of reactive oxygen species in cells, preventing mutations and dead due to oxidative stress.

called turmeric an «unstable, reactive, nonbioavailable compound» and noted that most of the health benefits associated with it were «improbable.»

* It is a precursor to and supports tissue levels of glutathione (GSH), the principle defense within the body against reactive oxygen species (ROS) and the detoxification of drugs, metabolites and other compounds.

In Phase 1 of detox, potentially toxic compounds are activated to make them more reactive.

These reactive compounds cause the harmful oxidation of other molecules within your cells — they damage your proteins and cell membranes and mutate your DNA.

The highly reactive chlorine combines with fatty acids and carbon fragments to form a variety of toxic compounds.

It is used by veterinarians to measure two compounds in the dog's blood: the thymidine kinase (or TK) level, which indicates unusually rapid cell division; and levels of C - reactive protein (CRP), which indicates when inflammation is present.

This means that it helps to counteract or protect against the harmful effects on the liver of «reactive» oxygen compounds.

Consequently, the most advanced climate models now require, in addition to concentrations or emissions of greenhouse gases (CO2, CH4, N2O and halocarbons), emissions of reactive gases and aerosol precursor compounds (SO2, NOx, VOC, BC, OC and NH3), to model atmospheric chemistry and interactions with the climate system.6 For most variables, a sectoral differentiation would improve the quality of the calculations (e.g. from power plants and agricultural burning).

For example, early global chemical modelling results argued that global tropospheric ozone, a greenhouse gas, was controlled by emissions of the highly reactive gases nitrogen oxides (NOx), carbon monoxide (CO) and non-methane hydrocarbons (NMHC, also known as volatile organic compounds, VOC).