Sentences with phrase «oxygen species from»

In the case of cisplatin - induced hearing loss, kenpaullone appears to protect hair cells by preventing CDK2 from stimulating the production of toxic reactive oxygen species from the cells» mitochondria.

Not exact matches

When potent oxygen radical scavengers such as cerium oxide nanoparticles (nanoceria) were combined with a highly charged polymer (polyacrylic acid) and incorporated into extracted chloroplasts using the LEEP process, damage to the chloroplasts from superoxides and other reactive oxygen species was dramatically reduced.

Instead, species that immigrate from areas with higher water temperatures and lower oxygen concentrations will establish themselves and displace the native polar species,» says Hans - Otto Pörtner.

Every species has a certain maximum temperature to survive, and a certain minimum oxygen level, and the two requirements are related,» says lead author Curtis Deutsch from the University of Washington.

A plague of oxygen - deprived waters from the deep ocean is creeping up over the continental shelves off the Pacific Northwest and forcing marine species there to relocate or die.

Published in the Proceedings of the National Academy of Sciences, the study found that many species from the two plateaus underwent different mutations to produce the same result: hemoglobins more adept at snaring oxygen from the lungs before sharing it with the other organs that depend on it.

Brenner said the NOX family are transmembrane proteins that generate reactive oxygen species (ROS) from oxygen.

But late in the Triassic period — between 210 million and 220 million years ago, when oxygen levels were similar to those of today — one species closely related to today's grasshoppers had wings ranging from 15 to 18 cm long, he notes.

On top of the problem recognition and methodology development, the article in Nature Energy also provides an initial approach to how the storage cell can protect itself from the reactive oxygen species.

Like giant salvinia, it depletes oxygen and prevents light from penetrating the water's surface, rendering freshwater habitats uninhabitable for most native aquatic species.

This metabolic demand makes brain cells particularly vulnerable to damage from oxidative stress, in which reactive oxygen species (ROS), sometimes called free radicals, exert toxic effects on cellular components.

Reporting this week in the journal Global Change Biology scientists from British Antarctic Survey (BAS) and from Germany's University of Kiel and the Alfred Wegener Institute reveal that when it comes to environmental change the reaction of Antarctic clams (laternula elliptica)-- a long - lived and abundant species that lives in cold, oxygen - rich Antarctic waters — is different depending on how old the animal is.

This new paper, published in the journal Applied and Environmental Microbiology, demonstrates that MRSA die on copper surfaces by a multifaceted attack from copper ions and reactive oxygen species (ROS).

Mitochondria help injured muscle cells (myofibers) repair by soaking up calcium that enters from the site of injury and using it to trigger increased production of reactive oxygen species.

Species living in coastal regions could face a significant future threat from reduced levels of oxygen in the marine environment, according to research published in Scientific Reports.

Modern - day relatives of this species can absorb dissolved oxygen from the water through their skin, a trick that helps them stay submerged for long periods of time.

Not only can they hide from mackerel amongst the jellies» stinger - covered tentacles when they rise from the seafloor to feed and digest at night, they can also survive for hours within the ocean floor's low - or no - oxygen muds, which are pervaded by poisonous hydrogen sulfide gas — an inhospitable place lacking any other vertebrate species.

«Significant impacts to the lake could result from incidental or accidental spills from 5,100 ships passing through every year; invasive species brought by transoceanic ships, which could threaten the extinction of aquatic plants and fish, such as the cichlids that have been evolving since the lake's formation; and frequent dredging, impacting aquatic life through alterations in turbidity and hypoxia, triggered by resuspension of nutrients and organic matter that exert a relatively high biochemical oxygen demand.»

Additional experiments using 12 sea spider species from Antarctica and the United States confirmed that gut contractions propel the flow of blood and oxygen in this group of marine - dwelling arthropods, the team reports today in Current Biology.

Aquatic species richness and abundance can decline, and in extreme cases salinization can prevent lakes from mixing - causing low oxygen conditions that smother aquatic life and reduce water quality.

This symptom results from accumulation of porphyrins, tetrapyrrole intermediates in heme biosynthesis that generate reactive oxygen species when exposed to light, in the skin of affected individuals.

Itâ $ ™ s not a silly question, when one sees how oxidative stress and reactive oxygen species have been implicated in so many diseases, ranging from hypertension and atherosclerosis to neurodegenerative disorders.

I've been experimenting with T10 dextran coated iron oxide nanoparticles, obviously not the same as fullerenes, but still a very interesting tool, I've been testing if the coating is giving the particle antioxidant abilities because of it's the (basically) indigestable sugar chains (glucose) creating a high surface area which are largely made from hydroxyl groups, I hypothesised this act's as a «sink» for reactive oxygen species converting them to water.

We used a fluorescence - based microplate respirometer to measure the oxygen consumption of coral larvae from both species, and also assessed the effects of these stressors on P. astreoides larval settlement and mortality.

So while it's true that organisms living deep in the Earth are not exposed to the high - energy radiation found when you travel between planets or more hypothetically between stars, the systems that cells have evolved to repair damage done by reactive oxygen species will be useful whether they arise from rocks or from cosmic rays.

From his own research in chemical oceanography, along with data from a number of recent studies, Weber points out that some negative consequences of greenhouse gas emissions and warming «are manifesting faster than previously predicted,» including ocean acidification and oxygen loss, which are expected to affect «a large fraction of marine species if current trends continue unchecked.&raFrom his own research in chemical oceanography, along with data from a number of recent studies, Weber points out that some negative consequences of greenhouse gas emissions and warming «are manifesting faster than previously predicted,» including ocean acidification and oxygen loss, which are expected to affect «a large fraction of marine species if current trends continue unchecked.&rafrom a number of recent studies, Weber points out that some negative consequences of greenhouse gas emissions and warming «are manifesting faster than previously predicted,» including ocean acidification and oxygen loss, which are expected to affect «a large fraction of marine species if current trends continue unchecked.»

A Emory News item on a helpful part of the microbiome focuses on how the same type of bacteria â $ «lactobacilli â $ «activates the same ancient signaling pathway in intestinal cells in both insects and mammals. It continues a line of research from Rheinallt Jones and Andrew Neish on how beneficial bacteria stimulate wound healing by activating ROS (reactive oxygen species).

Mononuclear cells from the blood were isolated during the OGTTs to analyze if these cells were producing molecules known as ROS (reactive oxygen species).

Nuts are high in phytate, which is a powerful antioxidant that promotes the growth of beneficial bacteria by protecting them from reactive oxygen species (oxidative stress).

So by replacing carbs with healthy fats, your cells» mitochondria are less likely to suffer damage from free radicals that are caused by reactive oxygen species or ROS.

In one recent study Achyranthes bidentata polypeptides (ABPP) separated from the aqueous extract of Achyranthes bidentata were shown to reverse production of intracellular radical oxygen species (ROS) and confer neuroprotective effects on NMDA receptors.

Like the other antioxidant vitamins discussed above, vitamin E prevents tissue damage of the thyroid gland which can be caused by free radicals especially the reactive oxygen species formed from lipid peroxidation.

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.

Berries are high in proanthocyanins the bioflavanoid pigments that protect our cardiovascular systems from destruction by reactive oxygen species (ROS).

Increased reactive oxygen species (ROS) levels have been observed in post-mortem brain tissue from patients with neurodegenerative disorders, including [9]:

The reactive oxygen species and free radicals released from such reactions like lipid peroxidation can progressively damage neurons.

Most significantly, Tang - kuei is a natural source of ferulic acid, a potent antioxidant that protects cells from damaging reactive oxygen species (ROS).

EGCG can protect brain cells from oxidative damage caused by harmful free radicals and reactive oxygen species.

* It is also a highly effective antioxidant that can protect the body's cells and molecules from damage by free radicals and reactive oxygen species generated during normal metabolism and exposure to environmental stressors.

In this theory, mitochondrial death from reactive oxygen species leads first to cell death, then organ death and that then kills the whole organism.

If we eat anti-oxidants, we can prevent our mitochondria from being damaged by excessive reactive oxygen species.

Both factors may elicit a sympathetic and hypothalamic — pituitary — adrenal (HPA) axis response, which drive increased systemic reactive oxygen species production, chronic inflammation, and a metabolic substrate shift toward carbohydrate and away from fat oxidation, manifesting in an array of signs and symptoms often labeled as the overtraining syndrome.16

«Bioactive compounds reported to stimulate mitochondrial biogenesis are linked to many health benefits such increased longevity, improved energy utilization, and protection from reactive oxygen species.

As an antioxidant, EGCG mops up free radicals and reactive oxygen species produced from lipid peroxidation.

Alpha Lipoic Acid Monograph Alternative Medicine Review 1998 (Aug); 3 (4): 308 — 311 ~ FULL TEXT Acting as a potent antioxidant, DHLA was found to protect rat pancreatic islet cells from destruction by reactive oxygen species.

The mitochondria in our cells are responsible for releasing energy from the molecules in our food, but they also unleash electron - stealing free radicals like reactive oxygen and reactive nitrogen species.

We know that many of the fish and some of the crabs seem to be able to swim or scuttle away from the low - oxygen waters, and in some cases they reappear once the levels of oxygen return to normal, but we do not know the long - term consequences of an annual die - off of the habitat - forming, bottom - dwelling species, many of which live to be decades old.

As they become anoxic, many species begin to die off, and the chemocline which separates oxygen rich waters above from the hydrogen sulfide rich waters below will rise toward the surface eventually spewing the poisonous gas into the atmosphere and wiping out countless species...... possibly our own.

Large, more active fish can't live in these oxygen poor waters, while more simple specialized organisms with a lower need for oxygen will remain, and even thrive in the absence of predation from larger species.

But pollution also covers hundreds of chemicals which are fine or even beneficial at low levels but which if released in large quantities or in problematic circumstances cause «harm» — like phosphorus (grows your veges but also leads to toxic cyanobacterial blooms which kill cattle), nitrogen (grows crops kills many native species of plants and promotes weed growth costing farmers), copper (used as an oxygen carrier by gastropods but in high concentrations kills the life in sediments which feed fish), hormones like oestrogen (essential for regulating bodies but in high concentrations confuse reproductive cycles especially with marine life) or maybe molasses from a sugar mill (good for rum but when dumped into east coast estuaries used to cause oxygen sag in estuaries leading to massive fish kills).