Sentences with phrase «low oxygen environments»

Cancer cells thrive in high - sugar, low oxygen environments.

How the spotted, gray felines survive in such low oxygen environments has puzzled scientists for years.

Semenza says scientists have long known that low oxygen environments affect tumor growth, but, in the case of advanced tumors, there was a paradox.

Spaceflights and reduced gravity habitats will expose astronauts also to low oxygen environments.

Newborn babies are born with an abundance of red blood cells because of the low oxygen environment of your womb.

This results in cancer cells needing to adapt to low oxygen environment.

Researchers at the University of Southampton have engineered cells with a «built - in genetic circuit» that produces a molecule that inhibits the ability of tumors to survive and grow in their low oxygen environment.

«Our study pinpoints a novel way in which tumor cells not only survive but actually continue to divide in spite of a low oxygen environment.

A majority of these genes are involved in metabolism and presumably allow the amoeba to use bacterial metabolic pathways to adapt to the low oxygen environment of the gut.

Strep mutans creates an acidic, low oxygen environment in the lesion.

Not exact matches

The drug blocks the action of an enzyme that hampers not only sexual ability but also the function of the lungs in low - oxygen environments.

Thinking that more hemoglobin might help plants better survive a low - oxygen environment, Leif Bülow and colleagues at the Center for Chemistry and Chemical Engineering in Lund, Sweden, inserted the Vitreoscilla bacterium's hemoglobin gene into the tobacco genome.

However, the rapid burial of Dakota in a waterlogged, low - oxygen environment allowed fossilisation to outpace the normal processes of microbial decay, preserving areas of soft tissue.

Deactivating the VHL gene makes animals react as if they're in a low - oxygen environment, also called hypoxia.

Those conditions create the low - oxygen environments where the botulism toxin - producing bacteria thrive.

Excess amounts from human activities often end up in rivers, streams and coastal environments, causing algal blooms, loss of sea grass and low oxygen levels in the water, which can kill large numbers of fish and other organisms.

They can thrive in hostile spots — from the acidic, low - oxygen environment of the stomach to boiling hot springs or frozen tundra.

Levin encountered such blooms recently in low - oxygen environments off India's coast, where «the jellyfish were as thick as soup,» she says.

To enable them to survive, adapt and grow in the low - oxygen or «hypoxic» environments, tumors contain increased levels of a protein called Hypoxia - inducible factor 1 (HIF - 1).

Blind mole - rats (genus Spalax) can live more than 20 years, are resistant to cancer and tolerate extremely low - oxygen environments.

Band led a previous analysis of gene expression in blind mole - rats living in low - oxygen (hypoxic) environments.

A new study demonstrates just how cancer - resistant Spalax are, and suggests that the adaptations that help these rodents survive in low - oxygen environments also play a role in their longevity and cancer resistance.

RoR dams can cause a spike in methylmercury in two ways — they can form small reservoirs, called headponds, which flood soil and create slow - flowing, low - oxygen environments; or they can create higher temperatures in the stream as a result of the reduced flow conditions when portions of the stream are diverted to the turbines.

«We culture our cancer cells in this very low - oxygen environment, and they start behaving like they are inside a low - oxygen tumour.»

Support for the idea that isolated low - oxygen environments may be preferred niches for early life comes from observations that anaerobic niches deep within Earth's crust tend to harbor ancient branches within the domains of life.

The experiments demonstrated that the blood cells can sense when the environment outside the capillaries is low in oxygen — which occurs when neurons take up more oxygen to generate energy — and respond by rushing to deliver more.

However, in a hypoxic environment, it is activated and initiates a series of events to combat physiological effects of low oxygen.

More specifically, how a genetic transcription factor called hypoxia - inducible factor 1 (HIF - 1) helps our bodies adapt to low - oxygen environments, and how modifying that factor could help treat anemia and cancers.

Dr Hawkes, formerly of Bangor University, added: «The wider implications of these findings are for low oxygen medical conditions in humans, such as heart attack and stroke — suggesting what adaptations might help prevent problems in the first place and learning how animals have managed to cope with really extreme environments.»

Unlike its related species, the yellow - bellied sea snake (Hydrophis platurus), the yellow sea snake subspecies lives in a significantly more hostile environment — the waters in the gulf are warmer, often turbulent, and the dissolved oxygen in them occasionally drops to extremely low levels.

This series of reactions can be anaerobic, so more suited to their typically low - oxygen environment, but also provides the supply of metabolic intermediates necessary for rapid growth and division.

If found in rocks having experienced a diagenetic history, these structures could help identify the presence of low oxygen concentrations in ancient iron - rich environments.

Researchers will look next at whether the adaptation affects how the killifish are able to respond to other kinds of stressors in their environment, such as low oxygen levels.

From yeast to worms to humans, this stress response and its primary regulator, heat shock factor 1 (HSF1), help normal cells adapt to harsh environments, including the presence of heavy metals, high salt concentrations, low oxygen levels, and of course increased temperatures.

The low oxygen and high organic matter in a wetland create a unique environment.

Tumors in low - oxygen environments tend to be more resistant to therapy and spread more aggressively to other parts of the body.

Our results demonstrate that despite cold temperatures and low - oxygen conditions, hunter - gatherers colonized extreme high - altitude Andean environments in the Terminal Pleistocene, within about 2 ky of the initial entry of humans to South America.»

Scientists long believed the deposits were formed when areas of muddy ocean floor slid into a lower place creating an anoxic (oxygen - starved) environment that was particularly favorable to fossilization because decay was inhibited.

biochar Charcoal produced by heating plant material in a no - or low - oxygen environment.

The other four groups spent three weeks in a low - oxygen environment — about half the normal level — which can trigger pulmonary hypertension.

The production of methane is accelerated because stationary pools of water contain much less oxygen than a flowing river interacting with the atmosphere and microbes thrive in low - oxygen environments.

As expected, the unmedicated rats in a low - oxygen environment had mildly elevated pulmonary artery pressures after three weeks and those that received SU5416 developed severe pulmonary hypertension.

1) Alkaline water electrolysis: In alkaline electrolysis the membrane prevents the hydrogen and oxygen products from mixing, however commonly available membrane separators often become brittle and crack with low pH. The membranes developed at SNL are stable under basic environments and have been tested by LANL and ProtonOnsite.

Green tea lowers sebum production, prevents the formation of clogged pores, robs p.acnes bacteria of a low oxygen, sebum clogged environment to call home, and cuts the head of the acne - causing snake before it ever arrives.

P.acnes is an oxygen tolerant bacteria, but it prospers and grows in lower - oxygen environments.

Antioxidants are effective at preventing something called sebum peroxidation, which is when free radicals damage the skin's sebum, lowering its oxygen content, and making it an ideal environment for an anaerobic bacteria, P. acnes, to thrive and reproduce.

In fact, prevention of excessive swelling is important because fluid that has escaped into the tissues from excessive swelling can create a low oxygen (hypoxic) environment that can lead to additional tissue damage and delay healing.

Set on the Hyperion Moonbase, players will explore the low - gravity no - Oxygen environment at the behest of a younger Handsome Jack.

report that ocean sediment cores containing an «undisturbed history of the past» have been analyzed for variations in PP over timescales that include the Little Ice Age... they determined that during the LIA the ocean off Peru had «low PP, diatoms and fish,» but that «at the end of the LIA, this condition changed abruptly to the low subsurface oxygen, eutrophic upwelling ecosystem that today produces more fish than any region of the world's oceans... write that «in coastal environments, PP, diatoms and fish and their associated predators are predicted to decrease and the microbial food web to increase under global warming scenarios,» citing Ito et al..

After the trash is cleaned of hazardous and recyclable materials, it will be combusted in a low - oxygen environment that produces a synthesis gas of hydrogen and carbon monoxide, a process known as gasification: