Sentences with phrase «chemicals damage cells»

These chemicals damage the cells and may distort the results.

Those chemicals damage cells, promote widespread internal (and invisible) inflammation, and lead to a vast number of health concerns now considered common such as cardiovascular disease and cancer.

Not exact matches

It dispatches the hormones and chemicals that repair damaged cells and replace dead ones.

@Chad: I. Mutations in DNA sequences generally occur through one of two processes: A. Environmental factors: DNA damage from environmental agents such as ultraviolet light (sunshine), nuclear radiation or certain chemicals B. Mistakes that occur when a cell copies its DNA in preparation for cell division.

Oxidation is a chemical reaction that releases free radicals, which proceed to cause cell damage.

Vitamin E helps protect your cells against free radicals, chemicals that oxidize and damage your proteins, cell membranes and DNA.

Reactive oxygen species, also called free radicals, are chemicals that typically contain oxygen, are known to be found in cigarette smoke, and cause DNA damage in cells.

These solutions slowly and delicately draw out the antifreeze - like chemicals without damaging the cells.

[Robert Siman et al, Serum SNTF Increases in Concussed Professional Ice Hockey Players and Relates to the Severity of Post Concussion Symptoms] A strong blow to the head causes chemical changes within nerve cells that damage their structural proteins.

All living organisms maintain a reducing environment inside their cells, all cells contain complex systems of antioxidants to prevent chemical damage to the cells» components by oxidation.

They discovered that the chemicals and radiation used to kill tumor cells damage the stem cell reservoir in the hippocampus and nearly halt the formation of new neurons in both children and adults.

When the researchers exposed mice to radiation and chemicals that harm DNA, damaged stem cells transformed permanently into melanocytes.

Defined as the harnessing of living processes to achieve healing and repair of damaged and diseased tissues by Tim Hardingham, director of the UK Centre for Tissue Engineering, it is a field that requires collaborative research involving cell and molecular biologists, chemical engineers, materials scientists, and surgeons.

Specifically, the Mount Sinai study was designed to test whether pharmacological compounds designed to block the function of XPO1 / CRM1 could stop disease progression in mouse models that exhibit some of the characteristics of MS. Researchers found that two chemical agents (called KPT - 276 and KPT - 350) prevented XPO1 / CRM1 from shuttling cargo out of the nucleus of nerve cells, which protected them from free radicals and structural damage.

If this environment is harmed by chemicals, such as through damage to gut cells, it could impact the health of the organisms and would lead to a number of fish diseases but this technique will enable us to increase the tests we can carry out and improve our understanding of how to preserve gut health.»

By measuring levels of the stress hormone cortisol, plus other chemical markers, the team found that the task caused more cell damage in the women who were already stressed.

A few years ago, MS researchers were focused on a new type of immune cell called the Th - 17 cell, which appeared to be a key player in driving the neuronal damage in MS. Because Th - 17 cells produce the cytokine IL - 17, researchers likewise thought this chemical was essential to the disease.

It belongs to a group of chemicals called reactive oxygen species (ROS), which scientists suspect to have a damaging effect on cells and their components.

In a bid to progress beyond the shotgun approach to fighting cancer — blasting malignant cells with toxic chemicals or radiation, which kills surrounding healthy cells in the process — researchers at the Harvard - MIT Division of Health Sciences and Technology (HST) are using nanotechnology to develop seek - and - destroy models to zero in on and dismantle tumors without damaging nearby normal tissue.

Plaque hinders neuronal activity by gumming up synapses (spaces between cells through which chemical or electrical information is transmitted), eventually damaging nerve cell branches and leading to neuronal death.

Exactly how the tea protects against heart disease remains unclear, but Kuriyama speculates that antioxidant chemicals in green tea, called polyphenols, reduce the action of free radicals in the body, which may damage cells.

Mutations occur, for example, when cells copy their DNA incorrectly or fail to repair damage from chemicals or radiation.

To overcome these issues, Steven J. Jonas, Paul S. Weiss, Xiaobin Xu and colleagues sought to create biocompatible nanospears that can be configured to transport DNA into cells precisely using an external magnetic field without either damaging the cells or having to use chemical propellants.

Photodynamic therapy (PDT), involves the use of chemicals called photosensitizers that are activated by exposure to specific wavelengths of light to release reactive molecules that can damage nearby cells.

Staining can be a long and exacting process, and the added chemicals can damage cells.

Moreover, the scientists observed traces of other damaging chemicals often recruited by RIPK1 to kill cells.

Mutagens are chemicals that can cause DNA damage in cells that in turn can cause cancer.

Experiments conducted in mice and in human ALS cells reveal that when RIPK1 is out of control, it can spark axonal damage by setting off a chemical chain reaction that culminates in stripping the protective myelin off of axons and triggering axonal degeneration — the hallmark of ALS.

Research on lab animals has shown some of the chemicals cause cancerous tumors and damage developing brain cells, and some can alter hormones essential to reproductive and neurological development.

These biologically damaging chemicals can kill the inner ear's hair cells, the ones that sense sound.

«Energy production can also generate reactive chemical species — often referred to as «reactive oxygen species» or «oxidants» — as by - products, which can be damaging to cells.

The fibers are thought to do so by skewering cells, setting off chemical reactions that lead to inflammation, DNA damage and cell death.

Cells lining the blood vessels send chemical signals, called cytokines, to the tumour to help it resist DNA damage and to recover.

Damage to proteins, which are essential for all the chemical reactions within the cell, could also have dire consequences.

Even though cells are not threatened by hurricanes and earthquakes, the damage induced by heat or radiation is equally devastating: Important proteins that control chemical reactions, transport substances or recognize signal substances, among others, lose their structure and are rendered useless.

Another well - known invention is a process called bioorthogonal chemical reactions, which can be used to label proteins, sugars, and other molecules in living cells and animals without damaging the cells.

That news alone was an exciting breakthrough, but there's more: In lab mice, damaged retinal ganglion cells survived longer and were able to regenerate when excess zinc was removed through a chemical process called chelation.

Without BRCA - induced DNA repair, a molecule called ATM kinase sensed the excessive DNA breaks and activated a chemical pathway that kills off damaged cells.

They will also screen for chemicals that can stop or even reverse the damage diabetes does to β cells.

They showed that basal cells were much more efficient at repairing DNA damage, allowing them to survive and reproduce following exposure to chemicals or radiation that damaged the DNA.

Further studies suggested that damage to cells in the barrier triggered a chemical cascade that affected the neighboring cells, Case says.

Most mutations are caused by chemical or radiation damage from the immediate environment or within the cell itself.

In that short window, they send chemical signals that instruct the mouse's own cells to repair the damage caused by MS.. This realization could be important for therapy development.

When Lin engineered the telomerase - expressing hepatocytes to die in response to a chemical signal and gave the mice with a liver - damaging chemical, he found that those animals in which the telomerase cells had been killed exhibited much more severe liver scarring than those in which the cells were functional.

The ultimate goal is to produce pluripotent cells by purely chemical means within the body to regenerate damaged parts and to treat disease.

These treatments target any rapidly dividing cells (not necessarily just cancer cells), but normal cells usually can recover from any chemical - induced damage while cancer cells can not.

Oscar Fernandez - Capetillo, Karolinska Institutet / SciLifeLab, and colleagues, have explored how mammalian cells might become resistant to chemical inhibitors of ATR, a molecule involved in sensing DNA damage.

Chemotherapy utilizes chemicals that interfere with the cell division process - damaging proteins or DNA - so that cancer cells will commit suicide.

Other genetic diseases include Tay - Sachs disease (damage to the gene for the enzyme hexosaminidase A leads to an accumulation of a chemical in the brain that destroys it), sickle cell anemia (improper coding of the gene that produces hemoglobin), hemophilia (lack of a gene for a blood - clotting factor) and muscular dystrophy (caused by a defective gene on the X chromosome).

«This study is a proof - of - principle that drugs of this chemical type cause energy stress and lower ATP levels to where it kills LKB1 - deficient cells without damaging normal, healthy cells,» says Shaw, senior author of the study.