Tag: "toxins" at biology news
Biggest physics meeting of the year
... anthrax in blood samples, measuring the levels of toxins
in the body, and studying the effectiveness of therapeutic agents that fight anthrax (H7.1). ANTI-BROWNIAN TRAP Nanometer-scale objects, such as proteins and DNA, constantly jiggle around in a liquid solution as they are bombarded by the heat-carr...
Researchers say environmental pollution is important piece of social justice debate
...disproportionately likely to be exposed to harmful toxins
such as lead and agricultural pesticides. Local, state and federal policies have strived in recent decades to limit such exposures. Policies have mandated the routine testing of blood lead levels in Medicaid-eligible children, for instance, while req...
Red Tide causes sea turtle die-off in El Salvador
...a in early February. In El Salvador, the levels of toxins
in shellfish have decreased but are high enough to maintain the ban on harvesting shellfish. Red Tide events have become increasingly common around the world, causing significant impacts on wild marine animal populations, massive economic losses to ...
HIV accessory protein disables host immunity via receptor-protein intermediary
...r cells were immune to sepsis (pathogens and their toxins
in the blood), because the NF-kB molecules did not...attacks PARP-1 activity, so the mice are immune to toxins
created by pathogens one indication that their immune surveillance has been compromised. Using bi...
Separate genetic mutations gave people, chimps bitter-taste sensitivity
...es we think what's driving it is the need to avoid toxins
found in plants, which are common in primate diets." The PTC gene is one of about 30 known to produce sensitivity to bitter tastes. A national group of U.S. researchers, including Mark F. Leppert, Ph.D., professor and co-chair of the U's Department o...
DNA sequencing contributes to sequence of honors for UH
...ning organisms that can produce energy, neutralize toxins
and make drugs and artificial genes. These organisms may eventually be used in alternative energy sources, natural product synthesis and discovery of novel protein therapeutic molecules, as well as in gene therapy procedures to treat genetic disorde...
Anthrax inhibitor counteracts toxin, may lead to new therapeutics
...rch on possible therapeutics and vaccines to treat toxins
that could be used as biological weapons. The current treatment for anthrax exposure is antibiotics, but inhalation anthrax still has a fatality rate of 75 percent even after antibiotics are given, according to the Centers for Disease Control and Pre...
Patent awarded for LSUHSC-developed peptide that blocks lethal toxins of anthrax
...nces Center in New Orleans, that blocks the lethal toxins
of such infectious bacteria as Pseudomonas and ant...e inhibitor of furin. Bacteria produce a number of toxins
which rapidly enter and kill cells. In anthrax, the lethal factor toxin must bind to another part o...
Vaccine combined with short-term postexposure antibiotics protects monkeys from inhalational anthrax
..., thus allowing anthrax infection to progress. The toxins
are thought to act mainly by damaging defensive cells called phagocytes, causing the immune system to malfunction. The organism then spreads unimpeded to all major organs of the body, causing tissue damage and death. While most spores probably germin...
Study links ADHD cognitive and behavioral problems to genetic and environmental interactions
...al Center study is the first to examine how genes, toxins
and gender interact to shape ADHD. "This study sho... a model for examining how genes and environmental toxins
interact to shape ADHD, and demonstrates that important effects may be obscured or over-generalized ...
Nanosecond-scale release of stinging jellyfish nematocysts
... the most venomous animals known. Injection of the toxins
requires an effective release mechanism that breaks the physical barrier of the prey's outer-surface tissue. It was known already that a high pressure (15 MPa) drives nematocyst discharge, and that stylets can penetrate even thick crustacean shells. ...
Ethnobotanist says non-regulated herbs pose risks
...rolonged, certain organisms may multiply or elicit toxins
to dangerous levels." Confusion and adulteration According to Elvin-Lewis, it has become increasingly apparent that those collecting some of the herbs are confusing one similar species Chinese star anise for Japanese star anise, for instance f...
Heal thyself: Systems biology model reveals how cells avoid becoming cancerous
...s to boost DNA repair in response to environmental toxins
and possibly treat inherited degenerative diseases...ess that is important to coping with environmental toxins
and a number of congenital diseases," said Ideker, the senior author of the paper. "Over the past se...
Survival of the selfless - scientists find cheats don't always prosper
...established that this is because cheats accumulate toxins
as a direct result of taking in resources more quickly than they can digest them, which limits the level of energy they derive from the sugar. This enables the cooperators to hold their own, meaning that the two different strains could coexist over t...
HHMI professor's phage-hunters strike pay dirt
...ons between phage and host are responsible for the toxins
of diseases such as cholera and diphtheria. Jacobs, Hatfull's long-time collaborator and co-author on this paper, uses phages as a tool for understanding the genetics of tuberculosis (TB). "The mosaic nature of these bacteriophages is just so surpris...
Discovery could aid fight against cystic fibrosis infection
...shaped pore that might be involved in transferring toxins
into cells. She deposited the structure of the protein, called Hcp1, into the Protein Data Bank, a resource used by biologists worldwide to find information about the proteins they are studying. While exploring the Protein Data Bank, Mougous, who w...
Harmful Algal Blooms monitored from space in Chile
...rea. In the case of shellfish, such as mussels, toxins
from the blooms accumulate in their body tissues and pose serious health risks for humans when consumed. For instance, in 2002 an HAB outbreak in Chile was responsible for 73 paralytic poisonings and two deaths. In 2004, more than 1500 cases of poiso...
UCSD researchers develop 'smart petri dish'
...was able to detect changes in the cells exposed to toxins
"before traditional assays are able to detect a decrease in viability, demonstrating the potential of the technique as a complementary tool for cell viability studies." In addition, they add, their method "is noninvasive and can be performed in real ...
Virus linked to Thoroughbred abortion epidemic
... at least part of the problem might be exposure to toxins
in Eastern tent caterpillars found on some farms. One new study examined 112 horses, both normal and those that had suffered abortions. It found that 40 percent of the mares with no reported abortion problems tested positive for vesivirus antibodies...
Bacteria, beware: New finding about E coli could block infections, lead to better treatments
...vations prompting EHEC to colonize and translocate toxins
into cells, altering the makeup of the cells and r...entional antibiotics can cause the release of more toxins
and may worsen disease outcome. That importance is magnified because of the QseC receptor's existenc...
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