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Tag: "exposure" at biology news

Drug That 'Tags' Decision-making Areas Of The Brain May Aid

...o, or the process ofaddiction following repetitive exposure to specific drugs. Thesebehaviors all result from the formation of new connections betweenindividual neurons or modifications of existing connections in thebrain.“Imaging of nicotine receptors also gives us the potential to study whysome people are m...

Tiny particles could solve billion-dollar problem

... because of its prevalence and its toxicity. Human exposure to TCE has been linked to liver damage, impaired pregnancies and cancer. Cleanup costs for TCE nationwide are estimated in the billions of dollars. The Department of Defense alone estimates the cost of bringing its 1,400 TCE-contaminated sites into ...

Clam embryo study shows pollutant mixture adversely affects nerve cell development

...ay foradditional studies that may help explain how exposure to BCE affectshuman nerve cell development and how...el to learn what genes are turned on and off bythe exposure to the chemical mixture. The research is focused on afamily of genes known as P53, which helps to re...

Female sex hormones play a vital role in defense against sexually transmitted diseases

...hat women too, like mice, are protected in primary exposure by estradiol, contraceptive creams could be formul...conditions that provide protection against primary exposure to sexually transmitted viral infections may be very different than those that may be useful in vacc...

Study identifies predictors of HIV drug resistance in patients beginning triple therapy

...ay foradditional studies that may help explain how exposure to BCE affectshuman nerve cell development and how...el to learn what genes are turned on and off bythe exposure to the chemical mixture. The research is focused on afamily of genes known as P53, which helps to re...

Poplar trees redirect resources in response to simulated attack

... shows that when that same plant is retested after exposure to jasmonic acid, a potent plant hormone that makes the plant 'think' it's under attack, it partitions more of its carbohydrates to the roots for storage. ...

Scientists discover the cellular roots of graying hair

...etrates deeply into the skin it isoften fatal. Sun exposure is a major risk factor in the disease, whichhas been increasing in the past several decades.Melanocytes, which manufacture and store the pigment that combines withhair-making cells called keratinocytes to color the hair, arespecialized cells spawned ...

Fundamental Finding Yields Insight into Stem Cells, Cancer; Opens Door to Drug Discovery

...etrates deeply into the skin it isoften fatal. Sun exposure is a major risk factor in the disease, whichhas been increasing in the past several decades.Melanocytes, which manufacture and store the pigment that combines withhair-making cells called keratinocytes to color the hair, arespecialized cells spawned ...

Weizmann Institute scientists develop a new approach for directing treatment to metastasized prostate cancer in the bones.

...etrates deeply into the skin it isoften fatal. Sun exposure is a major risk factor in the disease, whichhas been increasing in the past several decades.Melanocytes, which manufacture and store the pigment that combines withhair-making cells called keratinocytes to color the hair, arespecialized cells spawned ...

Study: Soap And Water Work Best In Ridding Hands Of Disease Viruses

..." he said. "Our study also showed that, at a short exposure time of 10 seconds, all agents with the exception of handwipes demonstrated a 90 percent reduction of bacteria on the hands." Alcohol-based handrubs were generally ineffective in demonstrating a significant reduction of a relatively resistant virus,...

Taking Aim With Nanoparticle PEBBLEs

...r a deadly cargo to cancer cells when triggered by exposure to light. Unlike chemotherapy drugs that attack tumors by invading cancer cells and disrupting their DNA, PEBBLEs never enter the cells they target. Instead, they attach to the outside of the targeted cell and shoot reactive oxygen species into it, ...

New protein discovered by Hebrew University researchers

...g contact with enzymes that break down proteins or exposure toextreme conditions such as boiling, excessive acidity, salinity,organic solvents or detergent solutions. Theresearch was conducted at the Hebrew University's Faculty ofAgricultural, Food and Environmental Quality Sciences in Rehovot byProf. Arie A...

The death of a very special chimpanzee

...g contact with enzymes that break down proteins or exposure toextreme conditions such as boiling, excessive acidity, salinity,organic solvents or detergent solutions. Theresearch was conducted at the Hebrew University's Faculty ofAgricultural, Food and Environmental Quality Sciences in Rehovot byProf. Arie A...

Study Models Impact Of Anthrax Vaccine

...ifantibiotics were distributed within 6 days after exposure and patientswere to take them for 60 days. Prevention rates dropped below 50percent if antibiotics were delayed more than 10 days. In 2001, somepostal workers did not begin taking antibiotics until 9 days afterexposure.The current licensed anthrax va...

Estrogen-like Component of Plastic Stimulates Growth of Certain Prostate Cancer Cells

...nd to this therapy and according to this newstudy, exposure to BPA among these patients could potentially put ...se debate for several years, withsome arguing that exposure to the chemical among humans is safe, withothers contending that it may promote the growth of human ...

Antibodies from plants protect against anthrax

...viduals. The antibodies can be used either before exposure to prevent infection or after exposure as treatment. "If you've been exposed to an agent, you want protection as soon as possible. Vaccina...

UCSD team discovers specialized, rare heart stem cells in newborns

...ontaneously beating cardiac muscle cells simply by exposure to other neighboring heart cells. And, since these rare cardiac progenitor cells are found in regions of the atrium that are normally discarded during routine cardiac surgery, the discovery raises the possibility that an individual could receive the...

New Treatment Rivals Chemotherapy For Lymphoma, Study Finds

... radiation zaps these malignant cells with minimal exposure to normal tissues. With the Bexxar therapeutic regimen, a patient receives an injected test dose of radioactive Bexxar to determine how that patient's body processes the tagged antibody. Nuclear medicine scans are used to assess how quickly Bexxar r...

VCU Researchers Identify Networks Of Genes Responding To Alcohol In The Brain

... in only one or the other strain, or in some cases exposure to alcohol caused genes to be turned on more in one strain while decreasing expression of the same gene in the other mouse strain. Such differences are thought to be related to the mechanisms underlying the different behaviors that the B6 and D2 mice...

Breast-Cancer Risk Linked to Exposure to Traffic Emissions at Menarche, First Birth

...tate between 1996 and 2001. They found that higher exposure around the time of first menstruation to polycycli...cancer. However, for postmenopausal women, higher exposure to PAHs at the time of the first birth was associated with increased risk. Neither association was f...

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