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Tag: "underlying" at biology news

Diverse tropical forests defy metabolic ecology models

... it seemed plausible that there might be a general underlying explanation." "Specifically, metabolic energy proposes a rule that total tree abundances scale as the -2 power of diameter, and we were hopeful that it would apply. But we tested that prediction on data from 14 sites around the world --over 2 millio...

Driver of anthrax toxicity could lead to late-stage therapy

... earlier found to play important roles in pathways underlying early development and cell proliferation, the researchers said. The discovery also suggests potential new avenues for treating late-stage anthrax disease, they added. While antibiotics, such as Cipro, can fight the anthrax bacteria when the disease ...

Ernst Mayr's theory illustrated in genetic epidemiology studies

...rected in a genetic sense," he said. "This is the underlying basis of genetic revolution. We have documented that a gene major in one population is minor in another. This is a very real phenomenon that documents Mayr's point of view." Templeton said that the Fisher camp views major and minor genes as if the...

2005 was the warmest year in a century

...of an El Nino. The result indicates that a strong underlying warming trend is continuing. Global warming since the middle 1970s is now about 0.6 degrees Celsius (C) or about 1 degree Fahrenheit (F). Total warming in the past century is about 0.8° C or about 1.4° F. "The five warmest years over the last centur...

Master genetic switch found for chronic pain

...amine related aspects of the biological importance underlying the Runx transcription factors. Runx1 was known to be expressed only in sensory nerve cells called "nociceptive" cells, involved in sensing pain. Such pain-sensing cells function by translating painful stimuli into nerve signals via specialized por...

Powerful new tool for studying brain development

...sts that treatments should be designed to kill the underlying cancer stem cell population. If you kill only the cells making up the bulk of the tumor, the disease will likely return, because you haven't eliminated the source of the tumor. Further, our comparative analysis of malignant and normal developing tis...

Underdogs in the understory: Study suggests nature favors rarer trees

...d Minnesota prairies arises from the same kinds of underlying processes. It brings us a step closer to understanding the causes of the world's amazing biodiversity," Tilman said. Muller-Landau contributed quantitative skills for analyzing and interpreting the data. "After all the effort that went into the an...

Neurons find their place in the developing nervous system with the help of a sticky molecule

...al layers. The neocortex develops outward from an underlying zone of cells. From that zone, crawling neurons migrate radially out toward the surface or "superficial" part of the developing cortex, giving rise to a laminar structure. Neurons forming layers 2 and 3, the focus of the current study, are born last ...

Infants can organise visual information at just four months

...initial aim of the research was to investigate the underlying reasons why some babies are 'short-lookers' and shift visual attention rapidly, while others are 'long-lookers' who keep their attention fixed for longer. Previously, these categories were thought to be relatively stable traits indicative of indivi...

UCSD study finds anthrax toxins also harmful to fruit flies

... its host and to determine the molecular mechanism underlying its toxicity, because the fly system is already so well characterized," Guichard said. "We knew how anthrax toxins acted on human cells, but this study is the first to show that these toxins are active in fruit flies, suggesting that this fast breedi...

The reason why antiviral therapy can't annihilate HIV infection, and what to do about it

... the nature of their residual virus as well as the underlying mechanisms of viral persistence. They demonstrate that HIV persists in both resting and activated CD4+ T cells of patients having received up to 9.1 years of effective antiviral therapy with undetectable levels of HIV in their plasma. Their data al...

Langerhans cells regulate immune reactions in the skin

...ignificantly alter understanding of the mechanisms underlying many skin disorders such as psoriasis, lupus and skin cancer. Dendritic cells are found throughout the body and are extremely efficient at alerting the immune system to the presence of pathogens and other foreign materials. Langerhans cells are den...

How Rickettsial pathogens break into cells

...in patients who are elderly or who have some other underlying disease. Left untreated, Mediterranean spotted fev...Rickettsia bacteria," Cossart said. "The mechanism underlying this interaction remains unclear, so we are now investigating how rOmpB, expressed by R. conorii, in...

Worms know bad food when they smell it

...ns. The work suggests that the cellular mechanisms underlying this type of learning have been maintained through evolution, and opens the way for more in depth studies of how learning occurs. The study will be published in the November 10, 2005, issue of the journal Nature. One of C. elegans' fundamental ...

UCLA discovery will aid in treatment of patients with a deadly brain cancer

...echnologies are helping us begin to understand the underlying molecular features of disease, and new drugs are making it possible to safely and specifically target pathways that are altered in cancer cells. This was impossible five years ago. Glioblastoma is still a difficult disease, but the idea that it may b...

The bioweapon is in the post

...sis firms springing up all over the world, and the underlying technology becoming cheaper and more widely available, it is unclear whether regulations enacted in any one country will be enough."It's going to be virtually impossible to control," predicts David Magnus, director of the Stanford Center for Biomedic...

Discovering the first steps in transcription-coupled repair

...pair works at the molecular level, but also on the underlying cause of the transcription defects that accumulate after birth in Cockayne Syndrome, which result in cell death leading to CS's characteristic neurological decline and wasting. Further work may provide insight into the processes of aging itself. ...

Changes to embryos can elicit change in adult fish

.... Our next goal is to understand the genetic bases underlying the differences between the simple biomechanical system of the lower jaw and complex systems of the anterior jaw in these fish." ...

Federal grant funds research on novel HIV therapy

...ouglas, respectively, aim to better understand the underlying mechanisms behind anti-HIV activity of NK-1R antagonists. The basic science research will particularly examine how these agents affect HIV-infected immune cells and how they also might protect the brain. "We know that substance P plays an important r...

Brain activity related to processing faces is similar in people with, without autism

.... Imaging allows researchers to begin looking at underlying mechanisms in brain function, Belger said. "Still, we must be careful in our interpretation of the results. Our findings need to be replicated and the research also broadened to include longitudinal studies," he added ...

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