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Current Biological Invasion News and Events, Biological Invasion News Articles.
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How did that chain letter get to my inbox?
Everyone who has an e-mail account has probably received a forwarded chain letter promising good luck if the message is forwarded on to others -- or terrible misfortune if it isn't. The sheer volume of forwarded messages such as chain letters, online petitions, jokes and other materials leads to a simple question -- how do these messages reach so many people so quickly? (2008-05-16)

Bread mold may hold secret to eliminating disease-causing genes
A University of Missouri scientist, along with a collaborative research team, has examined a new mechanism in the reproductive cycle of a certain species of mold. This mechanism protects the organism from genetic abnormalities by (2008-05-08)

Scientists identify 'gatekeepers' of breast cancer transition to invasive disease
Scientists have made a significant discovery that clarifies a previously poorly understood key event in the progression of breast cancer. The research, published by Cell Press in the May issue of the journal Cancer Cell, highlights the importance of the microenvironment in regulating breast tumor progression and suggests that it may be highly beneficial to consider therapies that do not focus solely on the tumor cells but are also targeted to the surrounding tissues. (2008-05-05)

Woody and aquatic plants pose greatest invasive threat to China
The relatively recent expansion of China's overseas trade probably accounts for China's being less invaded than the United States by alien plants, but the potential for invasion of China by shrubs, trees, climbers and aquatic plants is high. Decisive action is needed now to avert potentially large economic losses from invasive plants in China and other countries in Asia. (2008-05-01)

Freshwater herring had salty origin
East Africa's Lake Tanganyika has a highly diverse fauna which closely resembles marine animals. A researcher at the University of Zurich has traced the origins of the Lake's freshwater herring to a marine invasion which occurred in West Africa 25 to 50 million years ago. The ancient freshwater capture of marine organisms may help to explain the origins of other species unique to this Lake. The findings are published in this week's PLoS ONE. (2008-04-22)

Effective cancer immune therapy through order in the blood vessels
Researchers at the German Cancer Research Center have discovered a key molecule that is responsible for the characteristic immature structure of blood vessels in malignant tumors. If this molecule is switched off in mice, vessels normalize so that immune cells are better able to get to the tumor tissue from the bloodstream. This significantly increases the effectiveness of immune therapies and, thus, considerably enhances the survival time of treated animals. (2008-04-21)

Breast cancers behave differently before and after the age of 70
Researchers in Belgium have discovered that increasing age affects the way breast cancer behaves. As women approach the age of 70, they become less likely to be diagnosed with aggressive tumors that have spread to the lymph nodes. But after 70, the cancer is increasingly likely to spread, particularly if the tumors are small. The research was presented on Friday at the 6th European Breast Cancer Conference in Berlin. (2008-04-18)

Blocking the effect of inflammation-causing cells lowered prostate cancer cells invasion
Recent studies have suggested an association between chronic inflammation and cancers of the prostate, colon, stomach and liver. Now scientists report success in blocking an early step in metastasis of prostate cancer cells by interrupting the communication between the cancer cells and other cells that promote inflammation. (2008-04-08)

NSAIDs: Painkillers, inflammation inhibitors, anti-cancer drugs and new de-methylating agents
Researchers at the National Sun Yat-Sen University and Kaohsiung Medical University, Kaohsiung, Taiwan have revealed a new mechanism by which non-steroidal anti-inflammatory drugs attenuate tumor invasion and metastasis. The research, to be published in the April 2008 issue of Experimental Biology and Medicine, provides new insights for the understanding of the anti-cancer effects of NSAIDs. (2008-03-26)

Conservation of freshwater fish biodiversity: a challenge for the countries of the South
Work recently published by an international team, including research scientists from the IRD and the CNRS, yielded the first global-scale appreciation of the processes leading to freshwater fish invasion in river basins. This phenomenon affects predominantly all river ecosystems of countries of the Northern hemisphere. However, in the context of economic growth developing countries are now experiencing, their river basins, home to the greater part of freshwater fish biodiversity, are at risk of the same fate unless vigilance is applied. (2008-03-26)

MRI: A window to genetic properties of brain tumors
Researchers at UCSD School of Medicine have shown that Magnetic Resonance Imaging technology has the potential to noninvasively characterize tumors and determine which of them may be responsive to specific forms of treatment (2008-03-24)

National Lung Cancer Partnership announces winner of 2008 Career Development Award
National Lung Cancer Partnership is pleased to announce that Adam Marcus, Ph.D., of the Winship Cancer Institute at Emory University is the winner of the organization's 2007 Career Development Award. (2008-03-17)

Paradigm shift: Switch for programmed cell death promotes spread of glioblastoma
The protein CD95 is known to act as a molecular switch that triggers the apoptosis death program in cells. Scientists at the German Cancer Research Center have now shown that activation of this switch in glioblastoma has a totally unexpected effect. Instead of forcing the cancer cells to commit suicide, their spread is even promoted. Activation of CD95 was found to increase the tumor's ability to invade surrounding brain tissue. This finding reveals an unexpected target for new therapies. (2008-03-11)

Invasion of the cane toads
Researchers discover that cane toads invaded different regions of Australia at dramatically different rates. These variable invasion rates appear to be explained not only by environmental features that facilitate toad movement, but also by the evolution of higher movement rates because natural selection favors individuals at the edge of a species' range where they can monopolize the best habitats and exclude later arrivals. (2008-02-26)

Attack of the invasive garden ants
An ant that is native to Eurasia is threatening to become the latest in a procession of species to invade Europe, as a result of inadvertent human introduction. Research published in the online open access journal BMC Biology demonstrates that the invasive garden ant, Lasius neglectus, which is a threat to native species, may already be more widely established than expected. (2008-02-25)

Geotimes investigates Iraq's oil prospects
In the February issue of Geotimes magazine, now available on newsstands and online, Geotimes examines the complicated issues surrounding Iraq's oil exploration and production. (2008-02-08)

Freshwater fish invasions the result of human activity
Mapping worldwide freshwater fish invasions allowed the identification of major invasion hot spots and demonstrated that economic activity is the main determinant of freshwater fish invasions at the global scale. (2008-02-04)

Researchers confirm genetic alteration that triggers prostate cancer in mice and man
A team of researchers at Fred Hutchinson Cancer Research Center has confirmed that a molecular change found in human prostate cancers triggers the growth of prostate cancer in mice and in human cell lines. (2008-01-28)

New approach to detect autism earlier
A new way of understanding autistic disorders, incorporating both psychological and biological factors, could lead to the conditions being picked up earlier, research from the University of New South Wales has found. (2008-01-24)

How does Fu-Zheng-Jie-Du-Decoction act on PTEN expression in hepatocellular carcinoma?
Hepatocellular carcinoma is one of the major cancer killers. Traditional Chinese Medicine has been widely used as a combined therapy in treating the disease in China. How TCM works is still unknown. A research group in China has found TCM can down-regulate the expression of PTEN (Phosphatase and Tensin Homolog deleted on Chromosome 10) in HCC which may suppress tumor cell growth and regulate tumor cell invasion and metastasis. (2008-01-16)

Breast cancer cells have to learn to walk before they can run
Early-stage breast cancer that has not yet invaded the surrounding tissues may already contain highly motile cells, bringing the tumor one step closer to metastasis, report researchers at the Salk Institute for Biological Studies. (2007-12-31)

Other highlights in the Dec. 25 JNCI
Also in the Dec. 25 JNCI are studies on cancer care in nursing homes, a possible link between testicular cancer and environmental exposures early in life, the suppression of cancer cell invasion by cannabinoids, and a new method for classifying new and recurrent cancers. (2007-12-25)

Ant invaders eat the natives, then move down the food chain
The Argentine ant, Linepithema humile, is one of the most successful invasive species in the world, having colonized parts of five continents in addition to its native range in South America. A new study sheds light on the secrets of its success. (2007-12-18)

Pathogens use previously undescribed mechanism to sabotage host immune system
New research identifies a previously unknown enzymatic mechanism that subverts the early host immune response and promotes pathogenicity by manipulating a common signaling pathway in host cells. The research, published by Cell Press in the Dec. 14 issue of Molecular Cell, may have important implications for the food industry and for development of new antibiotics. In addition, the results lead to intriguing questions about whether mammalian cells can make use of a similar mechanism for potentially permanent and irreversible post-translational modifications. (2007-12-07)

Relationship between invasive plants, fire subject of new report
A new general technical report published by the USDA Forest Service's Pacific Northwest Research Station explores the dynamics between fire and invasive plants by summarizing completed and ongoing research conducted as part of the Joint Fire Science Program. (2007-12-07)

New map outlines risk of zebra mussel invasion
The spread of two invasive alien freshwater mussel species -- the zebra mussel and the quagga mussel -- appears to be controlled in part by calcium levels in streams and lakes, and a new risk assessment based on water chemistry suggests the Great Plains and American Southwest could be next in line for invasion. (2007-12-03)

New national map shows relative risk for zebra and quagga mussel invasion
Based on published reports of the zebra and quagga mussels preferred habitats and needs for survival, Thomas Whittier, Paul Ringold, and colleagues created a map to better determine where the species may appear next, in their paper (2007-12-03)

Homeless cells find temporary lodging -- and their demise
When human cells wander in suspension, free of their normal attachments, many of them launch invasions into their neighbors. These (2007-11-29)

University awarded £5M to investigate how cells communicate
Scientists at the University of Liverpool have been awarded £5 million to investigate how cells respond to stimuli such as stress and UV radiation. (2007-11-27)

Locals lose out to sexy aliens
Globalization has led to an increase in invasions by new species around the world and this is costing agriculture and the environment dearly. Invasive animals often thrive at the expense of their close indigenous relatives and a paper published today in Science within the Science Express Web site provides some insights into why. (2007-11-08)

Whitefly secrets to success: how to become one of the world's top invasive species
A population of the whitefly Bemisia tabaci has become one of the world's worst invasive species -- devastating many crops in China and elsewhere in the process -- through mating behaviors that help it invade the territory of native whitefly populations, according to a new study conducted in China and Australia. (2007-11-08)

Biological warfare: What do you need to know?
Highly infectious biological agents have been used to spread death and despair for centuries. A speaker coming to the University of Houston will address what we might confront if these agents were used today. Manuel Guerrero, a medical analyst with the Civil Support Readiness Directorate of the US Army North, will speak on (2007-11-05)

3-D model of esophageal cancer
In the Nov. 1 issue of G&D, a team of scientists led by Dr. Anil Rustgi presents an innovative new model of esophageal cancer, which holds great promise as an experimental platform to investigate the etiology and possible treatment of this devastating disease. (2007-10-31)

Are some men predisposed to pedophilia?
Height may point to a biological basis for pedophilia. A new study from CAMH found that pedophilic males were shorter on average than males without a sexual attraction to children, suggesting that pedophiles may have been exposed to pre-birth conditions that affected their physical development. (2007-10-22)

Transparent zebrafish help researchers track breast cancer
What if doctors could peer through a patient's skin and see a cancer tumor growing? They'd be able to study how tumor cells migrate: how they look, how they interact with the blood system to find nourishment to grow and spread through the body. Scientists at the UCSD School of Medicine can't look through human skin. But a small, tropical minnow fish common to aquariums has given researchers a window for viewing live, human cancer cells in action. (2007-10-22)

Study questions assumptions about human sensitivity to biological motion
Dr. Eric Hiris of St. Mary's College of Maryland, contends that although many papers on the subject begin by stating that humans are particularly sensitive in detecting point-light biological motion, little research has been performed that supports this; nor do his own results. (2007-10-17)

MicroRNA convicted of triggering metastasis
While past studies have shown that some microRNAs cause normal cells to divide rapidly and form tumors, this one offers proof that a microRNA can also cause tumors to metastasize. It establishes an important new role for a class of RNA molecules whose significance was discovered only recently. (2007-09-26)

Biological invasions can begin with just 1 insect
A new study by York University biologists Amro Zayed and Laurence Packer has shown that a lone insect can initiate a biological invasion. Zayed, a recent graduate of Packer's lab, examined patterns of genetic diversity in both native European and invasive North American populations of a solitary bee. He concluded that the invasion was most likely founded by one mated female. The study is published in the open-access journal PLoS ONE. (2007-09-11)

Sugar identified as key to malaria parasite invasion
Researchers at the Johns Hopkins Malaria Research Institute have identified a sugar in mosquitoes that allows the malaria-causing parasite to attach itself to the mosquito's gut. Invasion of the midgut cell layer is an essential stage in the parasite's lifecycle and in malaria transmission. By reducing the level of the sugar, chondroitin sulfate, in the mosquito, the researchers prevented 95 percent of the parasites in the mosquito from attaching to the gut, thus blocking its development. (2007-09-10)

Invasion of the brain tumors
By in vivo selection of a human glioma, the authors identify the p75NTR neuotrophin receptor as a critical molecule regulating increased invasiveness. (2007-08-13)

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