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Tag: "migration" at biology news

Green tea and the 'Asian Paradox'

..., regulates lipids, and promotes proliferation and migration of smooth muscle cells, which are all factors in reducing cardiovascular disease, he said. Sumpio said other reports show that EGCG prevents growth of certain tumors. Tea, according to studies, also can improve gastrointestinal function, alcohol me...

Where have all the butterflies gone?

...painted lady in the area in recent weeks, when the migration would normally occur. Apart from this year's weather, several species of California butterflies, including the large marble, sooty wing, Lorquin's admiral and the mourning cloak, suffered major declines in 1999 and have not yet recovered, Shapiro sa...

Viral marker of human migration suspect

...virus previously used as a marker in tracing human migration may be unreliable, according to researchers at Penn State. Results of this study also suggest that some viruses might be undergoing much higher rates of evolution than previously thought. "The most genetically divergent human populations are in Afri...

Disappearing nest egg: Researcher studying declining numbers of macaws

...d to learn more about their breeding habits, their migration routes, more about their diet and many other things. The more we learn about these birds, the better our chances to save them." ...

Innovative movies show real-time immune-cell activity within tumors

...is has enabled us to delineate the rules of T cell migration and engagement directly within the intricate micro...r unraveling the molecular requirements for T cell migration and T cell-tumor cell interactions. We should then be able to use results from this research to furt...

UCSD researchers create roadmap to integrin activation

...f integrins is a critical step in the sticking and migration of white blood cells required for inflammation in diseases such as rheumatoid arthritis and inflammatory bowel disease. ...

World's smallest cancer detection device

...derstanding of the causes of cancer metastasis and migration ? knowledge that is of critical importance in the treatment and, ultimately, prevention of cancer." Dr. Condeelis has used the multiphoton confocal microscope to directly observe cellular interactions in the tumor microenvironment of live animal mo...

UCSD researchers discover internal compass of immune cell

...nterfere with the amplification system impair cell migration to inflamed tissues. "These findings are very important because they suggest that novel classes of anti-inflammatory drugs could be developed to prevent rheumatoid arthritis, inflammatory bowel diseases, asthma, and many other chronic inflammatory...

Climate change creates dramatic decline in red-winged black bird population

...ciers and altered ecological patterns like earlier migration and earlier nesting of birds. "When you first start out, you don't set out to get 25 years of data on a topic," he said. "But when you're in the field long enough like I have been, that's what you wind up with -- long-term ecological data which ma...

From managing sugar to managing healing

...lar endothelial cells, the insulin stimulates only migration into the wound tissue. The insulin works by switching on cellular signaling proteins called kinases (specifically Src, PI3K, and Akt) and a protein (SREBP) that binds elements in DNA that regulate the production of cholesterol and its relatives. C...

Using nature's most primitive anti-viral defense system to find new approaches to cancer research

...dentify novel, conserved proteins involved in cell migration and invasion, some of which could prove to be good anti-cancer drug targets." According to Dr Mark Matfield, AICR's scientific adviser: "Metastasis of tumours (the spread of cancer cells around the body) is the cause of mortality in the majority ...

Newly identified biomarker detects and regulates spread of brain tumors

...l understood. Knowing that attractin modulates the migration and possibly the recurrence of these tumors makes it a promising target for future therapeutic intervention, says Dr. Van Meir. "Our studies suggest that measuring attractin levels in patients with grades II-IV astrocytoma should be explored further ...

Global changes alter the timing of plant growth, scientists say

... domino effect, impacting the feeding, breeding or migration patterns of the animals that rely on particular plant species." Cleland's co-authors include Nona R. Chiariello, research coordinator of the Jasper Ridge Biological Preserve; Scott Loarie, who assisted with this research while a Stanford undergradu...

Salmon farms kill wild fish, study shows

... Fish farms put adult salmon in net pens along the migration routes. The result is a cloud of sea lice through ...n increasing number of salmon were killed over the migration season, from 9 per cent in early spring when the sea lice population was low to 95 per cent in late ...

White blood cells of cancer-resistant mice overwhelm natural defenses of cancer cells

...om cancer cells and responding to those signals by migration and physical contact," they said. The researchers said that in ordinary mice, the white blood cells are suppressed by self-defensive signals coming from the cancer cells and don't attack the cancer. But the mutated gene or genes in the cancer-resi...

New imaging technique tracks traffic patterns of white blood cells

...e of Nature Methods, the new research displays the migration and inner workings of white blood cells in the small veins and bone marrow of mice. "Intravital micropscopy (IVM) has contributed enormously to the recent mechanistic advances in leukocyte trafficking," wrote Mount Sinai School of Medicine researche...

MIT bioengineer advances survival, promise of adult stem cells

...thways that can influence stem cell proliferation, migration and differentiation. However, the cell normally absorbs EGF and degrades it, and the growth factor loses its power to influence cell behavior. This has made EGF notoriously difficult to develop as a clinical product for wound healing. To control t...

'Ancestral eve' was mother of all tooth decay

...ch, extending from Asia back to Europe, traces the migration of a small group of Asians who founded at least one group of modern-day Caucasians." Additional branches, tracing the coevolution of humans and bacteria from Asia into North and South America, will be drawn in the next phase of Caufield’s analysi...

Tiny clue reveals new path toward heart disease

...he production of a protein that is involved in the migration of cells from one spot to another within smooth muscle. According to the researchers, the newly identified SNP may change the level of this protein in blood vessels, causing cells to congregate in one spot and form a plaque in the vessels to the hear...

Gene study shows three distinct groups of chimpanzees

...s born in captivity. "We saw little evidence of migration between groups in the wild," said Celine Becquet, first author of the paper and a graduate student in Przeworski's laboratory. "Part of that could stem from the gaps in our samples, but we think most of this separation is genuine, a long-term consequ...

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