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Tag: "harmful" at biology news

Airborne mold spores increase kids' risk for multiple allergies

...affect our respiratory health. Some fungi can have harmful effects on the body, but others may be beneficial." "There are literally thousands of different types of mold in the air we breathe," adds Melissa Osborne, a graduate of UC's environmental and occupational hygiene program and study lead author. "Bu...

Microbes transform 'safest' PBDEs into more harmful compounds

... United States into more toxic forms that could be harmful to humans, according to a new laboratory study pub...and octa-BDEs can break down into potentially more harmful forms, including penta- and tetra-BDEs. This new study supports the notion that this process also c...

Unique dual target specificity of kinase inhibitor key for success against cancer

...ered to date as it exhibits a broad action without harmful side effects." ...

Researchers unveil strategy for creating actively-programmed anti-cancer molecules

...s that are designed to recognize foreign pathogens harmful to the body; monoclonal antibodies are produced in the laboratory from a single cloned B-cell, the immune system cell that makes antibodies. "By bringing together chemistry and biology, our approach provides a way to break the traditional one anti...

Bacteria have their own immune system protecting against outside DNA

...eign invaders in the human body to protect against harmful infections, single-cell organisms have a protein called H-NS that recognizes foreign DNA and prevents it from becoming active, the researchers discovered. But bacteria can also benefit from foreign DNA. When Salmonella is infecting an animal or pers...

Selectively blocking inflammatory signals may protect mice from MS

...rmed oligodendrocytes. Here we confirm its direct harmful effects on those cells and demonstrate one way of ...ing," said Popko. "SOCS1 prevented or reduced the harmful effects of interferon gamma on myelin-producing cells. This study solidifies our suspicions about i...

Cutting calories slightly can reduce aging damage

...t ate until they were full had increased levels of harmful oxidizing and inflammatory molecules in the liver that were associated with cell damage caused by aging. Meanwhile, aging rats that exercised and consumed a calorie-restricted diet, had the reverse outcome - they showed a decrease in these molecules ...

Interfering RNA silences genes in 'slippery' immune cells

...gainst other immune-related diseases, by silencing harmful genes active in T cells." Dr. Finkel's co-authors, all from The Children's Hospital of Philadelphia, were Jiyi Yin, Ph.D., Zhengyu Ma, Nithianandan Selliah, Ph.D., Debra K. Shivers and Randy Q. Cron, M.D., Ph.D. National Institutes of Health grants ...

Weizmann Institute scientists discover a molecular security mechanism for keeping mutations in check

... it runs into damage from radiation or exposure to harmful substances on the DNA strand, it can stop in its tracks, unable to continue copying. A stoppage of this sort spells death for the cell. But not all damage to DNA is critical and, to avoid the wholesale death of cells, a second type of DNA polymerase,...

Adults who go to bed lonely get stress hormone boost next morning

...ls, that long-term elevations could be potentially harmful to physical health. But in the short term the stress hormone is adaptive and helpful, according to Adam. "Cortisol helps us respond to stressful experiences and do something about them," she said. "It is necessary for survival -- fluctuations in t...

Solvent exposure linked to birth defects in babies of male painters

...y among workers who are exposed to supposedly less harmful water-based paints that were introduced to replace traditional solvent-based paints formerly common in the Netherlands. "We need to evaluate and compare the influence of resulting solvent exposures on reproductive health," said Dr. Burstyn, who colla...

Sandia research to focus on early detection of harmful algal blooms

...gy that can successfully detect deadly toxins from harmful algal blooms (HABs). The funding is provided by th...xposure to toxins. Most species of algae are not harmful and actually serve as the energy producers at the depths of the food web. The dense patches (or "blo...

A transplant in time

... over the course of gestation, they found that the harmful T cells are not present in the tissue prior to day 42 of gestation. The scientists also found that tissue of this age exhibits optimal growth potential as well as secreting factor VIII, the blood-clotting protein missing in hemophilic patients. Thus...

Ecstasy can harm the brains of first-time users

...ll amount of MDMA, better known as ecstasy, can be harmful to the brain, according to the first study to look at the neurotoxic effects of low doses of the recreational drug in new ecstasy users. The findings were presented today at the annual meeting of the Radiological Society of North America (RSNA). “We...

A wolf in sheep's clothing: Plague bacteria reveal one of their virulence tricks

...t Prehna's mutation drastically lowered Yersinia's harmful effects. "Altering this binding site not only impairs the bacteria's ability to disrupt the host cytoskeleton," Stebbins says, "but it decreases its virulence significantly." "It's rare to find something that has such a strong effect that you can hi...

Gene therapy for hereditary lung disease advances

... that causes lung and liver disease, has caused no harmful effects in patients and shows signs of being effective, University of Florida researchers say. In a clinical trial, researchers evaluated the safety of using a so-called gene vector - in this case an adeno-associated virus - to deliver a corrective ...

Cigarette smoking impedes tendon-to-bone healing

... Galatz says the study also may underestimate the harmful effects of smoking because rats tend to be better healers than humans and because they were exposed to nicotine for only a few weeks following surgery, whereas people may smoke for many years before surgery, as well as continue smoking following rota...

Professors to develop hand-held pathogen testing device

...undergo polymerase chain reaction for the selected harmful pathogens. Polymerase chain reaction is a process that takes a small amount of DNA and makes billions of copies so the pathogens can be easily detected, Hashsham explained. Most of the genetic material in any bacteria isn't harmful. For instance, ...

Bitter taste identifies poisons in foods

...olved as a defense mechanism to detect potentially harmful toxins in plants. The Current Biology paper provi...cosinolates, a class of compounds with potentially harmful physiological actions, in natural foods. "The findings show that our taste receptors are capable ...

Caterpillars tell us how bacteria cause disease

...other research teams across the UK to screen other harmful bacteria using RVA in an attempt to identify genes which could be possible vaccine targets to prevent disease outbreaks in the future. Professor Julia Goodfellow, BBSRC Chief Executive, said: "This sort of genomics research is crucial in moving f...

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