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Tag: "cascade" at biology news

ENBREL rapidly, significantly improved back pain, mobility, function in ankylosing spondylitis

...ortant role in both normal immune function and the cascade of reactions that causes the inflammatory process of psoriatic arthritis and RA. The binding of ENBREL to TNF renders the bound TNF biologically inactive, resulting in significant reduction in inflammatory activity. Individual results may vary. In me...

ENBREL provided rapid and significant relief for psoriasis patients in second pivotal study

...ortant role in both normal immune function and the cascade of reactions that causes the inflammatory process. The binding of ENBREL to TNF renders the bound TNF biologically inactive, resulting in significant reduction in inflammatory activity. Since the product was first introduced, the following have been ...

Newly mapped enzyme could yield new treatments for female sexual dysfunction

...l function in both genders relies on a biochemical cascade as carefully orchestrated as any courtship ritual. At one critical step in that pathway, nitric oxide synthase converts arginine, one of the 20 natural amino acids, into citrulline and nitric oxide. The latter product causes rapid relaxation of smo...

Cross talk between bacteria, host leads to E. coli infection

... its location. This cellular cross talk leads to a cascade of genetic activations in which the EHEC colonizes the intestine and translocates toxins into human cells, altering the makeup of the cells and robbing the body of nutrients. "The bacteria gets what it wants nourishment - and the person ends up gett...

Key step allowing cell migration

...cell locomotion, he said.Understanding the complex cascade of molecular events could become a key to solving the mystery of how to stop cancer cells in their tracks, like nailing shoes to the floor. "Another significance of this study is beyond cell migration," Huang said. "Previously, JNK was thought to fu...

Scientists with Hawaii ocean mixing experiment

...tors undertook a comprehensive survey to track the cascade of ocean energy and turbulence. "One of the triump... the HOME experiment was being able to measure the cascade from thousands of meters down to centimeter scales," said Dan Rudnick, a professor of oceanography a...

Protein that fights bacteria and viruses cloned by Scripps scientists

...as sepsis. Sepsis basically results from a runaway cascade of inflammation in response to a bacterial infection, and Trif is involved very early in this cascade. If drugs might be designed that could modulate the function of Trif, they might help to improve the prognosis for sepsis. "You could imagine that ...

Stem cell death gives clue to brain cell survival

...s die, but you are talking about a whole signaling cascade that starts out with ceramide and PAR-4 and then there are a lot of unknown steps until we end up with the actual death of a cell," says Dr. Bieberich. The MCG researcher recently received a grant from the National Institutes of Health so he and Dr. ...

How a little bit of cold can kill a big manatee, and what it might mean for the species

...m found that the cold stress syndrome stems from a cascade of physiological events and diseases initiated by cold water and manatees' limited ability to adapt to low temperature extremes. The study suggests that the animal's metabolism slows, leading to digestion problems, decreased appetite, and associated...

Parasites prevent ants from protecting coffee plants

...cade, in which changes higher up in the food chain cascade or trickle down to affect organisms at lower levels. "Having phorids in the system cascades down to affect Azteca prey via their interactions with Azteca ants," Philpott said. "The phorids, however, may also affect how Azteca interact with other spec...

Study reveals genetic activity of key step in malaria parasite's cycle

..., and in a certain order, for a simple, continuous cascade of gene expression, beginning with genes that corr...processes as well. The orderly and precisely timed cascade of expression would be fouled, ultimately leading to the death of the organism," says the senior aut...

Mouse, stripped of a key gene, resists diabetes

...inds to the cell's insulin receptor, it triggers a cascade of events " that enables the animal to successfully regulate levels of blood sugar. "There are lots of steps involved in the process, and in the case of type II diabetes things go wrong in some of those events," Ntambi says. "What we found in these a...

How tea works against skin cancer

...ls don't block UV light, but they interfere with a cascade of chemical events, set off by UV light and other carcinogens, that lead to the uncontrolled cell division typical of cancer. "We asked if polyphenols can block the process that turns a normal cell into a cancer cell," said Dong. "We looked for a ta...

Enzyme discovery sheds light on causes of rare disease, cancer

... new proteins. The FA complex normally promotes a cascade of changes in a biochemical pathway that ultimately leads to the repair of cellular DNA damage. But if any of the proteins within the complex--including PHF9 itself--are mutated, the enzyme is disabled and the DNA repair pathway is disrupted. As a re...

Down and dirty: Airborne ozone can alter forest soil

...ch shows that changes in atmospheric chemistry can cascade through the forest and affect soils," says Dr. Kurt Pregitzer, a coauthor of the Nature paper and a professor in Michigan Tech's School of Forest Resources and Environmental Science. "Reductions we have observed in plant growth under elevated ozone a...

Research collaboration identifies gene essential to puberty

...ein that probably is a key trigger of the hormonal cascade required for mammalian reproduction. The discovery could lead to new infertility treatments or contraceptive options, among other applications. "It looks like we have found a key genetic gatekeeper of puberty in mice and men," says William Crowley ...

Wolves are rebalancing Yellowstone ecosystem

...g to better understand is the "trophic effect," or cascade of changes that can take place in an ecosystem when an important part is removed, Ripple said. The comparatively pristine conditions of a national park allowed this type of research to make "cause and effect" studies more feasible, the scientists poi...

JCI Table of Contents, November 3, 2003

...iscretion, by the addition of doxycycline (DOX). A cascade of immunological events including lymphocyte activation, lymphokine production, and proliferation of synovial cells (which comprise the loose connective tissue lining the joint cavity) is associated with collagen-induced arthritis in mice. Mountz and...

With flu season coming, don't forgetexercise?

...ound, -glucan activates key cells, which set off a cascade of immune defenses that protect the organism from various viral, bacterial and fungal challenges. The exact mechanisms are at least partially dependent on the route of administration; protection following oral administration results primarily from ce...

Cytokine signal shuts down hyperactive T cells

... "When the immune system is activated there is a cascade of cytokine interactions that regulate the growth and functions of an array of immune cells," said Christopher Hunter, an associate professor in Penn's Department of Pathobiology and senior author of the paper. "Contrary to previous studies, the IL-...

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