Tag: "invasion" at biology news
Emerald Spectre haunts Ontario's ash forests
...roit area. "In the Great Lakes region this beetle invasion
is mushrooming out like an atomic bomb going off," says the study's co-author Dr. Hugh MacIsaac, an expert in invasive species at the University of Windsor's Great Lakes Institute for Environmental Research. The small, metallic green beetle adults ...
Telling axons where to go and grow
...ted in biological processes such as metastasis and invasion
of cancer, Dr. Bach points out that "these results indicate that Rnf6 not only plays an important role in coordinating neuronal development but may be also involved in oncogenesis."...
Rate of gain, obesity factor into increased risk for prostate cancer recurrence
...stage of progression, Gleason Score, or tumor cell invasion
of lymph nodes or seminal vesicles, enhances the predictive value of tools used to determine the risk each patient has for recurrence of prostate cancer. "Urologists and oncologists can use this information when a man is diagnosed with prostate ca...
NSF, NIH award Ecology of Infectious Diseases grants
...al events--such as habitat destruction, biological invasion
and pollution--alter the risks of viral, parasitic and bacterial diseases emerging in humans and animals. These studies will allow public-health officials, wildlife managers and farmers to control the spread of diseases among humans, domestic and wil...
Ocean invaders in deep time
...ha continues. "We nailed down the timeline of the invasion
by sequencing--the last time there was tropical ocean connecting these two areas was 2 million years ago. We calculate that these fish invaded the Atlantic Ocean during a warm period about 150,000 years ago and arrived in the eastern Atlantic only 3...
Coastal retreat in face of rising sea levels found to be influenced by wildfires
...hat fire suppression as a strategy to reduce marsh invasion
does not make much sense," he said. "The reintrodu...tion of controlled burning to minimize marsh plant invasion
of forests should be done under optimal weather conditions and during the appropriate season of the ...
Valuing biodiversity services, including its insurance against disease
...ittee. Growing human contact with wildlife through invasion
of forest habitat and the use of wildlife for food and folk remedies is responsible for the emergence of a series of lethal human diseases that originated in animals, most famously SARS, HIV-AIDS and Ebola, he says, adding that preventing emerging di...
Proteins take on new roles in malaria parasite
... "If you know certain proteins are involved in the invasion
of red blood cells"--something that Plasmodium excels at in humans--"you can surmise that proteins interacting with those proteins are also involved in invading red blood cells." Or, as co-first author Suthram put it: "Protein interaction analysis g...
Model identifies genes that induce normal skin cells to become abnormal
...er cells are characterized by increased tumor cell invasion
and migration, as well as an undifferentiated, or "plastic," nature. The Hendrix lab has hypothesized that this poorly differentiated cell type serves as an advantage to aggressive cancer cells by enhancing their ability to metastasize virtually und...
Stress interferes with problem-solving; Beta-blocker may help
...Private Ryan," which graphically depicts the D-Day invasion
of Normandy during World War II, struggled with cognitive flexibility when compared to those who spent the previous 20 minutes watching the beginning of the animated comedy "Shrek." Immediately following the viewing, participants were assessed for pe...
Genetic defenders protect crops from fungal disease
...The plant cell wall is the primary barrier to this invasion
and one of the defense genes described in the current study, called PEN2, prevents the fungus from penetrating cell walls in the first place. If this first line of defense breaks down, as it does in about 5 to 25 percent of normal Arabidopsis plants...
AKT cancer cell pathway demonstrates unexpected function
...ility also paradoxically blocks their motility and invasion
abilities, thereby preventing cancer from spreadin...is kinase actually blocks cancer cell motility and invasion
was totally unexpected. "We asked ourselves, 'how is this happening?'"says Toker. The answer, he exp...
Potential malaria drug target identified
...tified an enzyme crucial to the malaria parasite's invasion
of red blood cells, according to a study in the op... gains entrance into a red blood cell. The entire invasion
lasts about 30 seconds. By designing a specific inhibitor that impeded the ability to shed the sti...
Kidnapped: Colon cancer seizes hapless nerve growth protein
...ovement into sinister contraptions for evasion and invasion
than aggressive colorectal tumors. Kidnapping is a... of L1's unwitting role in tumor cell motility and invasion
may have important implications for diagnosing colon cancer and for designing new therapies," report...
How Rickettsial pathogens break into cells
...the host cell are important events in R. conorii's invasion
of mammalian cells. In addition, since Ku70 has previously been shown to control cell death, the new findings suggest that Rickettsia, which--like several other intracellular parasites--prevent cell death in order to multiply inside living cells, may...
Brain's own cannabis compound protects against inflammation
...ain-cell-exciting chemical, called NMDA, caused an invasion
of the brain's immune cells, called microglia, and an increase in AEA levels. Importantly, they found that adding AEA to such damaged brain tissue abolished inflammatory damage to the brain cells, but did not reduce the primary "excitotoxic" damage f...
Researchers at Vanderbilt-Ingram Cancer Center uncover clue to explain invasive brain tumors
..., we looked at whether this molecule governed this invasion
in gliomas," said Ehtesham. CXCR4 is a receptor t...tesham found CXCR4 can, in fact, be linked to cell invasion
in glioblastoma. "If we look at a brain cancer model in rodents we can see a difference in CXCR4 exp...
Scientists find stronger evidence for link between cat faeces and schizophrenia
...n Procedings of the Royal Society B, shows how the invasion
or replication of the parasite Toxoplasma gondii in rats may be inhibited by using anti-psychotic or mood stabilising drugs. The researchers tested anti-psychotic and mood stabilising medications used for the treatment of schizophrenia on rats infec...
Post-pregnancy events promote breast tumor metastasis
...rences inherent to the source of matrix. In vitro invasion
assays established that human breast tumor cells migrated much better through the involution matrix than through virgin matrix. Schedins group next performed in vivo experiments to further confirm that post-lactation involution matrix enhances tumor ...
Exotic crab poised for widespread UK invasion
...he two and found the pattern of the crabs' ongoing invasion
of the UK is similar to the population expansion in Europe earlier in the last century when the Continent experienced a major outbreak. The study authors predict that the mitten crab - so called because its claws are coated with small clumps of dar...
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