Sentences with phrase «when cell activity»

When cell activity is depressed, the immune system is not generating appropriate responses to threats.

Not exact matches

The scientists found that when individuals completed a word puzzle, right before a moment of insight, a cluster of cells located in the superior temporal gyrus — in the right hemisphere of the brain — show significant activity.

Unlike the brain cells themselves, which are there through thick and thin as supporting environment, those brain wave activities which can be correlated with consciousness are present only when the latter is present and absent when the latter is absent.

But when dominant occasions in animals and the occasions in empty space in cells are included in the animal and cellular societies, then the activities of the societies can be explained by the activities of the components when they are components of those societies.

They found that epigallocatechin gallate, or EGCg, which is found in all tea, inhibits the activity of tNOX, an overactive enzyme that interferes with a cell's divide - and - rest cycle, and can facilitate uninterrupted growth of cancerous cells when combined with other factors.

When your child's temperature rises it causes the activity of white blood cells to increase so that they move more quickly to the site of the infection.

What ever happened to good old fashioned punishment When the child misbehaves there is NO priveleges, sports, fun activities, friends, TV, cell phones, i - pods or anything.

They found that antibiotics disrupted the mice's gut microbiomes, decreasing the activity of neutrophils and blocking these important white blood cells from responding when needed.

Beyond the activity of the drugs, the plasmonic effects of the gold nanoparticles could heat the nanoparticles when they are subjected to light, attacking the cancer cells through a second route.

«What's really exciting about this was that the activity differences were detected at a critical time in brain development: when neural progenitor cells are proliferating and expanding in number, just prior to producing neurons,» Silver said.

It's easy to understand why you would not want to be consciously aware of the intricacies of your muscle movement, but this can be less intuitive when applied to your perceptions, thoughts, and beliefs, which are also final products of the activity of billions of nerve cells.

Flies with hyperactive Rac seemed to forget the association faster than normal, and those with low activity seemed to remember longer — even when odours were introduced that should have distracted the flies or conflicted with their memories (Cell, DOI: 10.1016 / j.cell.2009.12.044).

«The cells can only re-establish connections with their neighbours when they are «awake», so to speak, that is when they display a minimum level of activity,» explains Mark Hübener, head of the recently published study.

«What we saw was that during learning, different patterns of activity — which cells are active, when they're active — were evident in the motor cortex,» says Peters.

«The centre is partially operational since July 2005 when the Stem Cell Bank of the CMRB began its activities in a temporary location.

They measured the concentration of calcium ions in the nerve cells to visualize their activity when a moth was stimulated with an odor.

When researchers screened a library of more than 200 drugs and related compounds for activity against embryonal subtype tumor cells from three patients, the most promising results involved drugs that increased oxidative stress in tumor cells.

The results, which focus on two choices near the start of embryo formation, show that, when cells are making decisions about what to become, there is greater variation in the activity of the genes in different cells — the same genes may be turned on in some cells and off in others.

The researchers then measured cell composition and electrical activity again and found that the cells dramatically changed when they were in contact with neurons from different regions.

When pathogens infect the cells of the body, the infection sets off a chain reaction involving the immune system that changes the activity, or expression, of hundreds of genes.

Igoshin said that when the researchers set out to find how sporulation decisions were timed to the cell cycle, several studies including prior work by team members, provided a significant clue: Under starvation conditions, the activity of the master regulator gene had been shown to spike once per cell cycle.

When they disrupted TBK1 activity, the cells could not separate chromosomes correctly into daughter cells and mitosis could not progress.

Experiments showed that HIFs controlled the production of GSTO1 in breast cancer cells when they were exposed to chemotherapy; if HIF activity was blocked in these lab - grown cells, GSTO1 was not produced.

Although one might assume that it would be possible to simply combine neural activity from two arms acting independently, the study shows that cells act differently when they are coordinating the movements of two limbs than they do when separately instructing one limb or the other, he says.

Whereas spacecraft have many redundant systems that can kick in, such as when a thruster fails, cells have their own backup systems for regulating gene activity.

In the current study, researchers found to their surprise that most of the nerve cells in auditory cortex neurons that stimulate brain activity (excitatory) had signaled less (had «weaker» activity) when the mice expected and got a reward.

When the researchers used two odors blended together in a series of increasingly similar concentrations, they found that two very similar smells could be distinguished as a result of the activity of as few as 25 Kenyon cells.

Furthermore, an immunological analysis found that the level of TH1 cells, characteristically expressing interferon - gamma protein which activates microphage to enhance bactericidal activities but could be an onset of autoimmune diseases when excessive, significantly increased in some of the mice.

On the other hand, when the researchers blocked f - circRNA activity, the cells» normal behaviors were restored.

In fact, when the researchers inhibited the secreted factor related to the activity of inflammatory cells, they observed a decrease in the proliferation of cancer cells.

When the team blocked the activity of L1CAM in cultured human colon cancer cells, the cells» growth slowed dramatically.

Particularly impressive in the Mosers» paper, Taube says, is that in some cases they were able to feed the activity of speed cells into a computer and accurately predict when the rat had slowed down or sped up.

The rats were distinctly less ticklish, and their brain activity showed a suppression of the cells that had fired so enthusiastically in the previous experiment, even when they were stimulated with the electrodes, he says.

Since nucleotides are needed to build duplicate copies of a cell's DNA before it can divide, SAMHD1's activity is carefully regulated so that it is active only when the cell is at rest and not dividing.

But then ISS itself serves as a home to six microbe - filled humans who stay in orbit for as long as 6 months each and routinely shed skin cells when they exercise, comb their hair, eat, and do other activities that potentially can contaminate their isolated «built environment.»

When this article was first published on 15 August 2013, it did not explain that HMM - MA in the fibroblasts of Middle East mole rats does not seem to be significant in their resistance to cancer or activity against cancer cells.

Indeed, when Sonnenberg's team looked at ILC activity directly, they found that MHCII + ILCs could present foreign antigen to T cells and limit their expansion and pro-inflammatory properties.

His work suggests that deep - brain stimulation — whether electrical or optical — may be most effective when it targets not the neurons themselves but the connections between cells, thereby affecting the flow of activity between brain regions.

Scientists at The Institute of Cancer Research (ICR) used the cells of fruit flies, modified with a fluorescent marker that is activated when the cells are put under stress, to identify the signals responsible for driving up activity of the ER.

«When we put the photoswitched channels into bipolar cells and record the output of the ganglion cells, we see complicated patterns that look a lot like the activity you get in a normal retina, compared to the on - off activity you get when you put the same photoswitch into a ganglion cell,» Isacoff sWhen we put the photoswitched channels into bipolar cells and record the output of the ganglion cells, we see complicated patterns that look a lot like the activity you get in a normal retina, compared to the on - off activity you get when you put the same photoswitch into a ganglion cell,» Isacoff swhen you put the same photoswitch into a ganglion cell,» Isacoff said.

When the researchers looked at activity at the cellular level in the rats» brains, they saw that individual cells stimulated by the optogenetics would increase firing rates in the PER network and that many cells fired in sync with the optical flicker frequency.

In normal mice, these neurons — a subset of nerve cells that release the neurotransmitter gamma - amino butyric acid (GABA), and so are called GABAergic neurons — are most active during waking periods when the mice are eating or grooming, two highly pleasurable activities.

The orientation - specific edge - apposing activity of these «border cells» is maintained when the environment is stretched and during testing in enclosures of different size and shape in different rooms.

When a cell faces such metabolic stress, it is logical that it will reduce its activity level in order to survive.

As with many other epileptic syndromes, LKS children often resume normal brain activity around age 15, when the brain cells are reaching toward maturation, perhaps spurred by hormonal change.

When instead the scientists suppressed activity in the same nerve - cell population during the typically active period of the mice's 24 - hour cycle, the mice conked out, snoozing through the presence of surefire arousal triggers: delicious high - fat chow, a female or fear - inducing fox urine.

«It really hasn't been explored when these activity networks — these collections of brain areas that start to work together in the brain — emerge and what types of cells and tissues they emerge in,» says Colin Studholme, Ph.D., a professor with joint appointments in pediatrics and bioengineering at the University of Washington and senior author of the paper.

This allows us to tell who the players are when the cells are engaged in the activity of our choice, like making components for biofuels.»

«Many neurons — including those in the hippocampus — showed a sudden burst of activity shortly after eye movements in sleep, typically observed when these cells are «busy» processing new images.»

Overall, activity in the dopamine - secreting nerve cells emanating from the VTA rose on waking and stayed elevated when mice were awake.