Tag: "harmful" at biology news

Bursts of waves drive immune system 'soldiers' toward invaders

...e body's first line of defense against potentially harmful microbes, and are one of the swiftest cells in the body. The wave action that speeds them along is generated by the same kind of three-part circuit that fires electrical signals along a neuron or prods the heart to beat, the researchers observe. Vi...

Carnegie Mellon's Peter Adams receives EPA research grant

... improve our understanding of the potentially more harmful particulate matter from sources such as cars, trucks and coal-burning power plants, said Adams, a member of Carnegie Mellons Center for Atmospheric Particle Studies (CAPS). Particulate matter poses a serious health problem. Fifty thousand American...

Weizmann Institute scientists discover a control mechanism for metastasis

...l walls. In patients who received these drugs, the harmful 'plug' proteins had disappeared from the cancer cells. Prof. Yarden: 'The mechanism we identified is clinically important. It can predict the development of metastasis and possibly how the cancer will respond to treatment.' This discovery may, in the...

Improved NIST SRM aids lead poisoning detection

...ddressing lead poisoning, a condition particularly harmful to the developing nervous systems of fetuses and young children, causing learning disabilities and behavior problems and, at high levels, seizures, coma and death. Children can be exposed to lead from lead-based paint in older buildings, or from co...

New strategy for treating allergic disorders

...immune system Every day our immune system combats harmful substances and micro-organisms that seek to penetrate our body. However, if our immune system is not working properly, we are subject to a variety of diseases. In the case of auto-immune diseases, the immune system no longer distinguishes between our...

Cell damage caused by brushing may help keep gums healthy

...its well-know ability to remove bacteria and their harmful products from teeth, brushing may, by causing plasma membrane disruptions, lead to local cell-adaptive responses ultimately of benefit to gingival health, the researchers write. Viewing brushing from this novel context, as a direct physical stimulu...

Parents seeking sex abandon 1 in 3 offspring

...he same strategy; whatever is good for the male is harmful for his female, and vice versa. Neither the males nor females are saints. Responsibilities for childcare vary enormously throughout the bird kingdom. Usually both parents care for the young although the female takes the bulk of care. In a score o...

American Chemical Society's Weekly PressPac -- July 25, 2007

...ents used break down oil spills into smaller, less harmful droplets. In the new report, Shai Shafir and colleagues evaluated the effects of both crude oil and six commercial oil dispersants under laboratory conditions on the growth and survival of two important species of reef corals. The dispersants and d...

Negative effects of plastic's additive blocked by nutrient supplements

...riments were five times lower than that considered harmful for mice, showing that even a low exposure was abl...own at what doses genistein would be protective or harmful in humans. Future studies would be needed to determine optimal doses. Its like the findings that h...

Isoprene emission from plants -- a volatile answer to heat stress

...n important role in protecting the leaves from the harmful effects of high ambient temperature. How does isoprene confer heat tolerance? Does isoprene act as an antioxidant due to its chemical reactivity" And more generally: Is this effect of significance under natural conditions for poplar and other isopr...

FDA sees nanotech challenges in every product category it regulates

...eans necessary to evaluate which nanomaterials are harmful and which are not. This is an issue that Congressional leaders from both parties have called on the federal government to address urgently, said Maynard. ...

CTRC enrolls first patients in novel phase II study for sarcoma -- living virus destroys cancer cell

...herapy drug, that is toxic to cancer cells but not harmful to normal cells. This novel therapy, using a living virus, is the first of its kind available at CTRC. According to Monica Mita, MD, principal investigator at the CTRC Institute for Drug Development, REOLYSINs name was derived from the human reovi...

Radiation therapy combined with microsurgery shows promise for curing injured spinal cord

...fter injury combining radiation therapy to destroy harmful cells and microsurgery to drain excess fluids sign...proved. Rats treated with incisions to reduce the harmful fluid accumulation, followed by radiation therapy at the site to remove damaging cells and regular t...

Fruit fly gene from 'out of nowhere' is discovered

...able elements appear to have no function or may be harmful and are eliminated by natural selection, but researchers are beginning to think transposons may be a source for creating new functional genes as well. The hydra gene is named after the Greek mythological beast that had a hound's body and nine snak...

1 in 4 NYC adults has elevated blood mercury levels

...or in New York Harbor, said Kass. They may contain harmful contaminants. Increasing Awareness and Reducing Mercury Levels The Health Department is working to raise awareness about how to make fish a healthy part of your diet. The agency has: Developed a brochure for women of childbearing age about...

Pediatric ritalin use may affect developing brain, new study suggests

...tudy might be helpful in battling the disorder but harmful if given to youngsters with healthy brain chemistry, Dr. Milner says. In the study, week-old male rat pups were given injections of Ritalin twice a day during their more physically active nighttime phase. The rats continued receiving the injection...

Molecular detectors may refine cancer treatment

...bodies, proteins that have the ability to identify harmful substances. But such methods do not capture subtle variances in the molecular signature of cancer cells. Once an aptamer probe has proved its utility, it can be inexpensively reproduced in a DNA synthesizer. Physical scientists mostly use culture...

Research study describes the role part of the brain plays in memory

..., lower the risk of eating new foods that could be harmful to them. In addition, they must later use this information acquired during a brief episode of social interaction in very different circumstances. Therefore, they need the flexible expression of memory, which is one of the main traits of declarative m...

New treatment model for HIV

...the need to suppress viral replication against the harmful side effects and significant cost to the patient of antiretroviral therapy. This tradeoff has led to the development of various drug-sparing HIV-1 treatment strategies, which often results in the emergence of resistant viruses and overall treatment f...

New research shows vaginal bacteria vary among healthy women, need customized treatment

... in the vagina change the pH balance dramatically, harmful bacteria can invade and cause infections. When the pH is imbalanced, a condition known as bacterial vaginosis can develop; the condition is not well understood and is marked by several indicators including elevated pH levels and vaginal discharge. If...

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(Date:4/17/2014)... stem cell therapies to cure a variety of diseases ... based on cell surface markers. Researchers from the Finnish ... highly expressed in a type of stem cells derived ... an article in BioResearch Open Access , a ... article is available free on the BioResearch ...
(Date:4/17/2014)... developed at Sandia National Laboratories and recently licensed to ... cheaper. , Bacillus anthracis , the bacteria ... over the world and can cause serious, and often ... can survive in harsh conditions for decades. In humans, ... skin contact, inhalation of spores or eating contaminated meat. ...
(Date:4/17/2014)... produce hydrogen sulfide in order to properly multiply and ... the Center for Craniofacial Molecular Biology at the Herman ... Shi, principal investigator on the project, said the presence ... flow of calcium ions. The essential ions activate a ... the creation of new bone tissue, and keeps the ...
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