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Tag: "usually" at biology news

Viral DNA sequence a possible trigger for breast cancer

...or breast cancer. The DNA sequence in question is usually found in immune cells and helps trigger the activation and proliferation of the cells. These sequences have also been found in proteins from some other cancer-causing viruses such as Epstein Barr virus and Kaposi's sarcoma virus, but what role this s...

Source of molecular triggers in cutaneous T cell lymphoma identified

...tumor viruses, of mutated genes, and of normal but usually inactive genes. The study reports that CTCL develops from a small subset of lymphocytes that are pre-programmed to respond to self-antigens exposed during normal cell death. As cells undergo the process of apoptosis, cryptic -- or masked -- antigens...

Yellowstone microbes fueled by hydrogen, according to U. of Colorado study

... and the microbes living in the pools.Hotter water usually shows colors from minerals, and cooler water playshost to photosynthetic pigments."Based on what I've seen in this analysis, I think hydrogen probablydrives a lot of life in a lot of environments," Spear said. "It's partspeculation, but given the num...

It's not all genetic: Common epigenetic problem doubles cancer risk in mice

...gene, H19, whose sequence overlaps the region that usually shuts off one copy of IGF2. As a result, these mice lack H19 and have double IGF2. To isolate the effect of the extra IGF2, Rolf Ohlsson at the Uppsala University, Sweden, developed a set of mice missing only the control region for IGF2; their H19 g...

Columbia research lifts major hurdle to gene therapy for cancer

...ed PEA-3 and AP-1 that, the researchers found, are usually abundantinside cancer cells. Both of the molecules flip a switch (called PEG)that turns on the production of a cancer-inhibiting protein uniquely intumor cells.The researchers say the PEG switch can be exploited to produce genetherapies that will onl...

Poor prenatal nutrition permanently damages function of insulin-producing cells in the pancreas

...ool. "The effect doesn't show up until later on -- usually not until adolescence or adulthood. "Many people believe we don't have much of a prenatal nourishment problem in the United States," she added. "But poor nutrition of a developing baby can occur in many ways other than inadequate nutrition of the mo...

Recent breakthroughs in common adult leukemia highlighted in New England Journal of Medicine

...ts, the patients whose disease follows this course usually die with the disease, not because of it. CLL may also follow a more aggressive course. In these cases, patients do require chemotherapy and have a lifespan of only about six to eight years after diagnosis despite treatment. Scientists, including Drs...

Emory Eye Center Implants Its First Retinal Chips In Patients With Retinitis Pigmentosa

...ng" cells of the retina. Night blindness develops, usually in childhood, followed by loss of peripheral visual field, progressing over many years to tunnel vision and finally blindness. At Emory Eye Center retina specialists Thomas M. Aaberg, Sr. and Jiong Yan performed the surgery recently on five patients...

Mouse brain tumors mimic those in human genetic disorder

...rt growing inchildren younger than 5 years old and usually do not progress after age10. A similar pattern occurred in the mice: The optic nerve and chiasmwere enlarged and astrocytes along the optic pathway began multiplyingand growing when the animals were around three weeks old, developinginto optic pathwa...

Muscle-targeted gene therapy reverses rare muscular dystrophy in mice

...e inherited muscular disorder called Pompe disease usually die before they reach the age of two. The research... If symptoms appear during infancy, the disease is usually fatal. Those for whom symptoms first appear late in childhood live longer, but life expectancy remai...

Scientists discover the cellular roots of graying hair

...ve been unableto explain the precise cause of this usually unwelcome transformation.In a report posted today on the Web site of the journal Science,researchers from Dana-Farber Cancer Institute and Children’s HospitalBoston say they have found the cellular cause of graying hair whileinvestigating the origins...

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

...ve been unableto explain the precise cause of this usually unwelcome transformation.In a report posted today on the Web site of the journal Science,researchers from Dana-Farber Cancer Institute and Children’s HospitalBoston say they have found the cellular cause of graying hair whileinvestigating the origins...

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

...ve been unableto explain the precise cause of this usually unwelcome transformation.In a report posted today on the Web site of the journal Science,researchers from Dana-Farber Cancer Institute and Children’s HospitalBoston say they have found the cellular cause of graying hair whileinvestigating the origins...

Weill Cornell Research Reveals Secrets Of Trafficking Within Cells

... nutrients, neurotransmitters, or other compounds; usually from the cell surface to the cell interior. Previous work at Dr. Ryan's lab has helped clarify the role of some of the key players in this process, including a ubiquitous protein called clathrin, found in nearly every cell type. "From our previous ...

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

...nds or so, but that’s not what health-care workers usually do in practice, and we wanted to test the products under realistic conditions," she said. Anti-microbial agents were best at reducing bacteria on hands, but waterless, alcohol-based agents had variable and sometimes poor effects, becoming less effec...

Taking Aim With Nanoparticle PEBBLEs

... survival time. People who get that type of cancer usually live less than four months without treatment; rats die within about five days. When Kopelman's group treated rats with PEBBLEs that weren't even tailored to home in on cancer cells, the rats lived twice as long. With targeted PEBBLEs, some rats were ...

Researchers discover molecule that causes secondary stroke

...the blood vessels in the brain, cerebral vasospasm usually occurs three to 10 days following a massive brain bleed known as hemorrhagic stroke. Sixty percent of patients who survive the initial stroke develop vasospasm, and 40 percent of them die from it. Vasospasm, says neurology department researcher Jose...

NYC's First Rapid HIV Drug-resistant AIDS Case Prompts Call to Step Up HIV Prevention

...rug resistance; however, doctors and providers can usually find a second or third line drug therapy regimen for effective treatment. This man's strain of infection appears to be much more pathogenic, much more able to wreak havoc with his immune system, and medical providers and public health officials are b...

FDA Warns Consumers Not to Use Home-Use Diagnostic Kits Marketed by Globus Media

...ough websites and distributed throughout the U.S., usually by overnight delivery services. These have been ma...luding www.htkit.com and www.hstkits.com. The kits usually are contained in a paper envelope with instructions inside the packaging. The envelope, instructions...

Newly Discovered Compound Blocks Known Cancer-Causing Protein

...ity provides the kind of drug discovery capability usually available only to pharmaceutical company scientists. Duke's new facility is a finalist for one of six $9 million National Institutes of Health (NIH) grants that will create a national network of publicly accessible small molecule facilities and make...

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