Tag: "microbe" at biology news
MRSA vaccine shows promise in mouse study
...e. Two of those proteins, IsdA and IsdB, help the microbe
acquire needed iron from the host's red blood cells. The other two, SdrD and SdrE, are thought to be involved in bacterial adhesion to host tissues. When tested alone as a vaccine, each of the four proteins provided only partial or no protection. ...
Microbes compete with animals for food by making it stink
...h the antibiotic chloramphenicol added to suppress microbe
growth. In the lab, stone crabs readily ate both freshly thawed menhaden and fish that had soaked in water with antibiotics, but refused to eat the rotten fish not protected from microbial attack. To determine if reducing bacterial growth affected ...
New highways carry pathogens and social change in Ecuador
...ad. "The increased diversity and potency of the microbe
population apparently offsets the improved health care that also comes with new roads," he said. "When you're thinking about a road, you have to also think about these impacts that will take years to unfold." The newly busy towns also seemed to expe...
Extreme life, marine style highlights 2006 ocean census
...floor vent (the hottest ever discovered), a mighty microbe
1 cm in diameter, mysterious 1.8 kg (4 lb) lobster...In the sense that biodiversity is richness, Census microbe
hunters found 20,000 kinds floating in a single liter of sea water. Samples were taken from the Atl...
Tuberculosis: The bacillus takes refuge in adipose cells
...tive for tuberculosis, people with no trace of the microbe
in the lungs may develop some form of tuberculosis attacking the lungs, bones or genitals. It also suggests that isoniazid treatment, prescribed to the close friends and family of patients as a preventative measure, may in some cases not provide suff...
Leading cause of US food-borne illness makes its own pathway through cells
... entry pathway, Watson and Galn could watch as the microbe
infected a host cell, briefly associated with the early marker protein EEA-1, and then with the late marker Lamp-1. "Although the marker proteins indicated that campylobacter trafficked to conventional lysosomes, information from traceable dyes ind...
Scientists crack the genome of the parasite causing trichomoniasis
...scientists hypothesize that this trait brought the microbe
a selective advantage during its evolution: A bug ..."a real yuck factor to it." A good way to know the microbe
is growing well is to smell the contents of the test tube. "It smells foul, it has a fishy odor; rea...
UCLA and NYU microbiologists crack genome of a parasite that causes a common STD
...scientists hypothesize that this trait brought the microbe
a selective advantage during its evolution: A parasite with a big surface area, enabled by a big genome, is better at colonizing the area it is infecting. The organism also shows predatory behavior. It "eats up" good bacteria in the vagina using a pr...
Story tips from the Department of Energy's Oak Ridge National Laboratory, January 2007
... ENERGY -- Microbial cost savings . . . A tiny microbe
may hold the key to simpler, lower-cost production...nathan Mielenz is studying gene expression in this microbe
to determine how these enzymatic functions are performed, revealing strategies for further reducing ...
Cloning the smell of the seaside
... Andrew Johnston and his team at UEA isolated this microbe
from the mud at Stiffkey saltmarsh to identify and extract the single gene responsible for the emission of the strong-smelling gas, dimethyl sulphide (DMS). "On bracing childhood visits to the seaside we were always told to 'breathe in that ozone,...
Investigating the invisible life in our environment
...ich contradicts the longstanding belief that every microbe
can potentially live everywhere." To investigate the invisible life on our planet further, samples of many different environments are being collected and analysed. Metagenomics experiments generating enormous amounts of data and new computational m...
Bacteria could steady buildings against earthquakes
... a natural soil bacterium, Bacillus pasteurii. The microbe
causes calcite (calcium carbonate) to be deposited around sand grains, cementing them together. By injecting bacterial cultures, additional nutrients and oxygen, DeJong and his colleagues found that they could turn loose, liquefiable sand into a soli...
JCI table of contents -- February 22, 2006
...stine Infection with some microbes (such as the microbe
that causes tuberculosis) and some cases of tissue damage (such as occurs in Crohn disease) result in a localized chronic inflammatory response that causes the formation of granulomas (small cellular nodules). Although the cellular content of granulo...
Creating new life forms that may help eradicate cancer affecting women
...oducts Central to this startling discovery is the microbe
Listeria monocytogenes, a common bacterium found in milk, cheese and other dairy products. This microorganism apparently aids in fighting cancer by activating the body's own killer (cytotoxic T) cells to elicit a stronger than normal immune response...
Making daughters different -- how immune cells take divergent paths when fighting infections
... yet reserve some cells to "remember" the invading microbe
for future infections? "That's the conundrum of ...of the descendents of an immune cell reacting to a microbe
must become the soldiers that fight the infection and die; but some, instead, regenerate to take the...
Scientists expand microbe 'gene language'
...et of terms to describe the interactions between a microbe
and its host. The Plant-Associated Microbe Gene Ontology (PAMGO) consortium and the GO consortium staff at the European Bioinformatics Institute approved and released more than 450 new terms for describing gene products involved in microbe-host int...
New Cell titles further ScienceDirect offering
...ideas and concepts between scientists studying the microbe
with those studying the host immune and cellular r...h particular emphasis on the interface between the microbe
and its host. The unifying theme will be the integrated study of microbes in conjunction and communi...
Why is long-term therapy required to cure tuberculosis?
...s thought to lie in the fact that the tuberculosis microbe
achieves a TB-specific "dormant" or non-replicating state in an infected person. Because virtually all types of antibiotics act only on replicating bacteria, the dormant state of TB is thought to render it resistant to treatment. But the authors n...
MIT biologists solve vitamin puzzle
...el method for identifying mutant strains of a soil microbe
that could not form a symbiotic relationship with a plant. Walker's team has now found that one such mutant has a defective form of an enzyme known as BluB that leaves it unable to synthesize B12. BluB catalyzes the formation of the B12 fragment ...
Alternative-fuels pioneer receives first-ever $100,000 Lemelson-MIT Award for Sustainability
...ch on the one-step, CBP approach. Developing a microbe
that can convert cellulosic biomass to ethanol can be approached in one of two ways, said Lynd. Either start with organisms that are able to grow well on biomass and modify them to produce ethanol better, or start with organisms that produce ethanol ...
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