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Tag: "increasing" at biology news

FSU scientist warns North Atlantic right whale facing extinction

...ulation is estimated to be more than 10,000 and is increasing at approximately 7.2 percent per year. While there have been efforts to minimize the risk of ship strikes -- mandatory ship location reporting, extensive aerial survey efforts and mariner education -- the scientists say that the initiatives don't le...

Scientists to mimic nature for newest cancer drugs

...ulation is estimated to be more than 10,000 and is increasing at approximately 7.2 percent per year. While there have been efforts to minimize the risk of ship strikes -- mandatory ship location reporting, extensive aerial survey efforts and mariner education -- the scientists say that the initiatives don't le...

Study shows how retinoic acid enters a cell's nucleus

...s with mice, Noy and her colleagues showed that by increasing CRABP-II levels within cells, tumor growth rates slow dramatically. The protein transfers RA rapidly and efficiently to the cell's nucleus. In this way, tumor growth may be inhibited using naturally occurring levels of RA, as opposed to the toxic dos...

Size matters: Preventing large mammal extinction

...nd late weaning age to contend with, significantly increasing their susceptibility to extinction. "In a world dominated by people, being big is substantially more of a disadvantage than we realised, which implies that the conservation of large mammals should assume a particular urgency," said Dr Marcel Cardill...

USC researchers determine mechanism of action of chemotherapy drug

... drug created oxidative stress in the tumor cells, increasing the levels of expression of the genes that produce metallothioneins. The researchers showed that the increased metallothionein expression levels resulted from significantly increased levels of free-i.e., not protein-bound-zinc in the cells. The zinc...

Researchers track down cause of a disfiguring bone disorder

... regulator, bone production goes up, progressively increasing bone density, or osteosclerosis. The effect primarily occurs in the skull and lower jaw of Van Buchem patients, causing facial distortions and pinching cranial nerves, which can lead to deafness and blindness. Collarbones, ribs and long bones can al...

Millennium Ecosystem Assessment: Many of 2 billion dryland dwellers at risk as land degrades

...ralists, reduced range quality. The lesson is that increasing population pressure not accompanied by management practices compatible with the new population size, is the cause of degradation." As populations in drylands increase, especially in urban areas, water scarcity increases in tandem. Drylands contain 4...

Engineered molecule amplifies body's immune response

... engineering a hyper-responsive Stat1 molecule. By increasing the efficiency of the Stat1 molecule, the host could have the benefits of increased Stat1 signaling even at the low levels of interferon normally present in the body. Their results appear as the "Paper of the Week" in the October 7 issue of the Journ...

Gene therapy to lower blood pressure just enough

...elaxation of smooth muscle cells in blood vessels, increasing the vessels' diameters, and reducing the manner in which the vessels react to agents that can constrict those vessels. ANP also improves the manner in which the kidney eliminates sodium or salt from the body and inhibits other systems, such as the sy...

New technique rapidly detects illness-causing bacteria

...ned software gives researchers a powerful tool for increasing the sensitivity of the analysis. The method may help researchers and companies that are in the business of tracking food-borne pathogens, allowing technicians to determine a source quickly. It may also help to analyze a throat culture swab, to tell ...

Monkeypox mystery: New research may explain why 2003 outbreak in the US wasn't deadly

...cent studies suggest the incidence of monkeypox is increasing due to encroachment of human into habitats of animal reservoirs. Monkeypox is classified as a "zoonosis," which means that it is a disease of animals that can be transmitted to humans under natural conditions. The first cases of monkeypox reported in...

Crisis in African fish supplies looms, experts warn Africa leaders

...th HIV and AIDS against secondary infections while increasing the effectiveness of retroviral drugs. "Small fis... 2. Develop aquaculture Aquaculture will play an increasing role in African food security. Small integrated fishing-farming operations will provide employment f...

Leptin-signaling Protein Maintains Normal Body Weight And Energy Balance In Mice

...th HIV and AIDS against secondary infections while increasing the effectiveness of retroviral drugs. "Small fis... 2. Develop aquaculture Aquaculture will play an increasing role in African food security. Small integrated fishing-farming operations will provide employment f...

Treatments have same target, different responses for lung cancer patients with genetic mutation

...ctive than cetuximab at inhibiting cell growth and increasing apoptosis in NSCLC cells with mutant EGFR. The authors note that because these studies were carried out in cell lines, and not in humans, issues such as which drug has more toxicity or negative side effects are still unanswered. However, they did ...

AIDS expert says global strategy needed to combat feminization of HIV/AIDS

...ontrol efforts. Now he argues that because of the increasing and disproportionate numbers becoming infected, and the social consequences of so many young mothers dying and leaving behind children who may also be infected as well as orphaned, women deserve a separate strategy. He also points out that medical r...

Molecular miners find pain relief drugs from the sea

...clinical trials for diabetic neuropathy. "With an increasing age demographic in our society the need for more effective pain suppressing compounds is a priority. ACV1 may fill this unmet need," Associate Professor Livett says. ...

Lands surface change on Alaska tundra creating longer, warmer summers in Arctic

... the new study. The scientists determined that the increasing summer temperatures in northern Alaska could not b... shrubs and trees to slowly migrate northward. The increasing woody vegetation is further warming the near-surface atmosphere by absorbing rather than reflecting ...

Naturally occurring asbestos linked to lung cancer

...n and Central California, and has been a source of increasing concern as new housing developments cut through these areas. Of most concern are the areas of ultramafic rock associated with tremolite asbestos. In their ambitious study, Schenker and his colleagues used California Cancer Registry data to identify ...

Ants, not evil spirits, create devil's gardens in the Amazon rainforest, study finds

...ning more nest sites." The plants also benefit by increasing their biomass and eliminating the competition, says co-author Michael J. Greene, a former Sanford postdoctoral fellow, now assistant professor of biology at the University of Colorado-Denver. "This work is a truly remarkable example of how effectivel...

Sugar helps control cell division

...iences. "In contrast, our experiments show that by increasing or decreasing the amount of sugar attached to proteins, the cell cycle is disrupted and isn't salvageable unless O-GlcNAc levels are fixed." In experiments with human cells and mouse cells, Slawson and his colleagues showed that preventing a cell fr...

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