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Tag: "rise" at biology news

Researchers map out networks that determine cell fate

... working with hematopoietic stem cells, which give rise to the many types of blood cells, show how "pioneer transcription factors" trigger the first step, pushing these stem cells towards this mixed lineage, midway between two related cell types -- in this case between a macrophage and a neutrophil. Th...

Brittle prions are more infectious

...w the molecular structure of a prion protein gives rise to its physical properties. ...

Ritalin packs punch by elevating norepinephrine, suppressing nerve signal transmissions

...er from ADHD or ADD. Methylphenidate use is on the rise among college students who solicit prescriptions from friends or siblings diagnosed with ADHD and use the drug to postpone fatigue and stay alert and focused while studying for exams or completing projects, Waterhouse said. ...

Gene discovery may shed light on kidney disease

...ladelphia have identified a second gene that gives rise to Alagille syndrome, a genetic developmental disease that affects multiple organs. The Children's Hospital team previously discovered the first gene associated with this disease. The researchers found that mutations in the NOTCH2 gene were linked ...

New human retrovirus originated in mice

...ion and deletion that they are incapable of giving rise to viruses any more," said Ganem. "And while some of these viruses had been induced to grow in human cells in culture, the major question is whether such infection could ever happen in nature. "So, one of the things that is important about our study...

U of MN uses robotic surgery techniques in cardiac cell therapy research

...bination of skeletal myoblasts, or cells that give rise to muscle, and bone-marrow derived cells. Both cell types have been shown to improve the development of new blood vessels and to improve function of injured heart muscle. Both are in human clinical trials as well. The research is published in the c...

The critical importance of mangroves to ocean life

...arge quantities into the coastal waters. The daily rise and fall of the tides then flushes the dissolved carbon into the open ocean (like a teabag being dipped in an out a cup). Once in the ocean, however, the intense tropical sunlight destroys some of the most delicate dissolved organic carbon molecules....

AIDS-related cognitive impairment exists in two separate forms

... Cancer recurrence was defined in this study as a rise in prostate specific antigen (PSA) levels after surgery, she said. Rising PSA after removal of the prostate indicates that the cancer is in the process of recurring. "A methylation test like this could potentially help doctors decide which patients ...

Markers of gene, protein, or micro-RNA activity predict outcome in prostate and colorectal cancers

... Cancer recurrence was defined in this study as a rise in prostate specific antigen (PSA) levels after surgery, she said. Rising PSA after removal of the prostate indicates that the cancer is in the process of recurring. "A methylation test like this could potentially help doctors decide which patients ...

Hopkins study suggests commercially available antibiotic may help fight dementia in HIV patients

...atments), the prevalence of HIV dementia is on the rise since people are living longer with HIV. "We hope this research might help many patients with other forms of dementia, such as Alzheimer's, and infections of the brain, like herpes encephalitis and West Nile encephalitis," says Rumbaugh. "However, i...

New Research Shows Artificial Light at Night Stimulates Breast Cancer Growth in Laboratory Mice

...ffers a promising new explanation for the epidemic rise in breast cancer incidence in industrialized countries like the United States. The National Cancer Institute and the National Institute of Environmental Health Sciences, agencies of the federal National Institutes of Health, provided funding to rese...

Study indicates dramatic rise in antibiotic-resistant community-acquired staph infections

...Annals of Internal Medicine, reports on a dramatic rise in antibiotic resistant community-acquired methicillin-resistant Staphylococcus aureus (MRSA), making it the primary cause of skin and soft tissue infections. An editorial accompanying the article notes, "the number of populations at risk for commun...

Mice with glowing hearts shed light on how hearts develop

...e, or glow, when the concentration of calcium ions rise within cells, is described online at http://www.p...likoff. Using the new technique, which tracks the rise of calcium as the heart muscle contracts, the researchers discovered a layer of specialized cells on...

UF scientists trace origin of shark's electric sense

...ers to the same type of embryonic cells that gives rise to many head and facial features in humans. The d...m skeptical about the claim the neural crest gives rise to electroreceptors. It still requires a definitive experiment, where the developing neural crest ce...

Bone and cartilage growth to blame for heart valve disease

...ed for surgery." Valvular heart disease is on the rise with the aging of the United States population, and is second only to coronary artery disease as a cause for open heart surgery. Heart valve disease leads to 100,000 surgeries in the U.S. each year to repair or replace damaged valves. Mitral valve d...

Higher carbon dioxide, lack of nitrogen limit plant growth

...e found that atmospheric carbon dioxide levels may rise even faster than anticipated, because ecosystems likely will not store as much carbon as had been predicted," said Peter Reich of the University of Minnesota, lead author of the study, which was conducted at the National Science Foundation (NSF)'s Ce...

Therapeutic prospects beyond Vioxx

...educe not only the clotting response, but also the rise in blood pressure caused by drugs like Celebrex. "Despite some chatter to the contrary, this issue of an aspirin effect has not been addressed directly in any of the clinical trials of COX-2 inhibitors," says FitzGerald. "However, although these stu...

El Nino events affect whale breeding

...1°C over the last 50 years and if they continue to rise this could threaten their recovery. ...

Scientists re-engineer a well-known antibiotic to counter drug resistance

...gs Institute for Chemical Biology. "The continued rise of vancomycin-resistant infection poses a serious threat to hospital patients in the U.S. and around the world," Boger said. "These infections not only increase the length of hospital stays, but they raise patient mortality rates as well. Our success...

Researchers now able to look deep into heart to view triggers of a heart's beat

... there is no centrosome in the egg that could give rise to new ones. We found that the accessory nuclei se...nd showed that the accessory nuclei appear to give rise to centrosomes. Accessory nuclei bud off from the membrane of the nucleus, the cellular structure ...

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