http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. The research group of Professor Magdalena Gotz of Helmholtz Zentrum Munchen and Ludwig-Maximilians-Universitat Munich (Germany) has made a significant advance in understanding regeneration processes in the brain. The researchers discovered progenitor cells which can form new glutamatergic neurons following injury to the cerebral cortex. http://www.physorg.com/news178899595.html Medicine & Health Tue, 01 Dec 2009 14:30:41 EST news178899595 Two signaling pathways essential to normal human development - the Wnt/Wingless (Wnt) and epidermal growth factor receptor (EGFR) pathways - interact in ways that can promote tumor cell invasion and metastasis, researchers from The University of Texas M. D. Anderson Cancer Center report in the Nov. 25 issue of Molecular Cell. http://www.physorg.com/news178377136.html Medicine & Health Wed, 25 Nov 2009 13:30:02 EST news178377136 Astronomers have found that the extrasolar planet HAT-P-7b has a retrograde or highly tilted orbit. Studying such planets is important in understanding the diversity of planetary systems and assessing current models of how planets migrate. The findings could help astrobiologists in the search for habitable planets beyond our solar system. http://www.physorg.com/news177783167.html Space & Earth Wed, 18 Nov 2009 16:30:19 EST news177783167 (PhysOrg.com) -- Temperature differences and slow-moving water at the confluence of the Clearwater and Snake rivers in Idaho might delay the migration of threatened juvenile salmon and allow them to grow larger before reaching the Pacific Ocean. http://www.physorg.com/news172423924.html Biology Sun, 15 Nov 2009 07:45:57 EST news172423924 A new research paper from CReAM (Centre for Research and Analysis of Migration at UCL) investigates the factors which determine individual attitudes towards migration policy. http://www.physorg.com/news176555921.html Other Sciences Wed, 04 Nov 2009 11:40:01 EST news176555921 Satellite tracking has allowed a research team to uncover the mysteries of the migration of Eleanora's falcon for the first time. In total, the bird flies more than 9,500 kilometres across the African continent from the Balearic and Columbretes Islands before reaching the island of Madagascar. Some of the previously-obscure secrets now revealed by the scientists show that these falcons migrate by both day and night, and cross supposed ecological barriers such as the Sahara Desert. http://www.physorg.com/news174908334.html Biology Fri, 16 Oct 2009 10:43:17 EST news174908334 A high-speed chase across the Panama Canal in a Boston Whaler may sound like the beginning of another James Bond film -but the protagonist of this story brandishes a butterfly net and studies the effects of climate change on insect migrations at the Smithsonian Tropical Research Institute. http://www.physorg.com/news173969205.html Biology Mon, 05 Oct 2009 13:48:00 EST news173969205 According to the AZTI-Tecnalia researchers, the first estimations of the geographical location of the recovered tag revealed that this fish had undertaken migrations between the Azores and Portugal during the winter, later to return to the Gulf of Bizkaia in spring and also that it had dived, during the winter, to depths of more than 1000 metres. http://www.physorg.com/news173528831.html Biology Wed, 30 Sep 2009 11:50:02 EST news173528831 Australia's population grew at its fastest rate in 50 years in the 12 months to March thanks to a surge in migrant numbers, official figures showed Tuesday. http://www.physorg.com/news172846941.html Medicine & Health Tue, 22 Sep 2009 14:30:04 EST news172846941 Researchers at the Burnham Institute for Medical Research have discovered that reactive oxygen species, such as superoxide and hydrogen peroxide, play a key role in forming invadopodia, cellular protrusions implicated in cancer cell migration and tumor metastasis. Sara Courtneidge, Ph.D., professor and director of the Tumor Microenvironment Program at Burnham's NCI-designated Cancer Center, and colleagues have found that inhibiting reactive oxygen reduces invadopodia formation and limits cancer cell invasion. The study was published on September 15 in the journal Science Signaling. http://www.physorg.com/news172313995.html Medicine & Health Wed, 16 Sep 2009 10:00:32 EST news172313995 Marathon runners are famed for pasta packing in the days before a big run but when tiny passerine birds set out on their epic migrations, the distances are too great to cover on the energy reserves with which they embark. Michał Wojciechowski and Berry Pinshow explain that most birds stop off en route to their destination to refuel. http://www.physorg.com/news171864771.html Biology Fri, 11 Sep 2009 05:13:46 EST news171864771 A new study identifies a molecule that acts cooperatively with a well known oncoprotein to drive progression of noninvasive breast cancer to metastatic, life-threatening disease. The research findings, published by Cell Press in the September issue of the journal Cancer Cell, could have a significant impact on therapeutic decisions by facilitating identification of high risk patients. http://www.physorg.com/news171633603.html Medicine & Health Tue, 08 Sep 2009 13:00:41 EST news171633603 Researchers funded by the National Institutes of Health have found that the activity of a protein in brain cells helps stimulate the spread of an aggressive brain cancer called glioblastoma multiforme (GBM). In a move toward therapy, the researchers showed that a small designer protein can block this activity and reduce the spreading of GBM cells grown in the laboratory. http://www.physorg.com/news169820163.html Medicine & Health Tue, 18 Aug 2009 13:50:03 EST news169820163 Disease knows no borders and now researchers in Europe and the Mediterranean shoreline are using electronic infrastructures (e-Infrastructures) to coordinate and cooperate internationally. http://www.physorg.com/news169819389.html Technology Tue, 18 Aug 2009 13:03:58 EST news169819389 The front of Temple University's student center is an almost seamless wall of glass, reflecting trees and sky in lifelike detail and adding visual appeal to the urban landscape. http://www.physorg.com/news168848947.html Biology Fri, 07 Aug 2009 07:29:38 EST news168848947 (PhysOrg.com) -- The development of the brain proceeds a little like the European settlement of North America. The earliest pioneers settled on the east coast with subsequent waves of settlers forming communities further and further westward. In cortical regions of the developing brain, generations of young neurons undergo a staged migration as well, with the earliest-born cells staying relatively close to their birthplace and subsequent generations traveling further, ultimately stratifying into six neuronal layers in the mature brain. Now, for the first time, imaging studies have identified the `motors` that propel a unique form of cell migration that creates these layers that underlie the formation of synaptic circuitry. http://www.physorg.com/news167581076.html Medicine & Health Thu, 23 Jul 2009 15:40:02 EST news167581076 Australian scientists have photographed a humpback whale helping a newborn calf take what appears to be its first breath, a rare event described as the "Holy Grail" for whale-watchers. http://www.physorg.com/news167553925.html Biology Thu, 23 Jul 2009 08:20:01 EST news167553925 The molecular machinery that helps brain cells migrate to their correct place in the developing brain has been identified by scientists at St. Jude Children's Research Hospital. The finding offers new insight into the forces that drive brain organization in developing fetuses and children during their first years. Disruption of this brain-patterning machinery can cause epilepsy and mental retardation and understanding its function could give new insight into such disorders. http://www.physorg.com/news166887881.html Medicine & Health Wed, 15 Jul 2009 15:20:01 EST news166887881 Scientists at Burnham Institute for Medical Research (Burnham) have discovered that specialized complex sugar molecules (glycans) that anchor cells into place act as tumor suppressors in breast and prostate cancers. These glycans play a critical role in cell adhesion in normal cells, and their decrease or loss leads to increased cell migration by invasive cancer cells and metastasis. An increase in expression of the enzyme that produces these glycans, β3GnT1, resulted in a significant reduction in tumor activity. http://www.physorg.com/news166120789.html Medicine & Health Mon, 06 Jul 2009 18:30:01 EST news166120789 (PhysOrg.com) -- As the popularity of take-home DNA kits to trace ancestry or calculate the risk for serious medical conditions grows, there is an increasingly critical need for federal oversight of "direct-to consumer" genetic testing, as well as of the use of DNA samples for research, according to researchers from the University of California, Berkeley, and several other academic institutions. http://www.physorg.com/news165763092.html Medicine & Health Thu, 02 Jul 2009 14:19:29 EST news165763092 Millions of sardines have begun their annual migration down South Africa's east coast, but fewer fish are making the journey due to rising ocean temperatures, a researcher said Monday. http://www.physorg.com/news164888672.html Space & Earth Mon, 22 Jun 2009 11:24:53 EST news164888672 By mid-century, people may be fleeing rising seas, droughts, floods and other effects of changing climate, in migrations that could vastly exceed the scope of anything before, says a major new report. The document, authored by researchers at Columbia University's Center for International Earth Science Information Network (CIESIN), the United Nations University and CARE International, was released at a news conference in Bonn. http://www.physorg.com/news163832067.html Space & Earth Wed, 10 Jun 2009 05:56:12 EST news163832067 Researchers at the University of Leeds have devised a more accurate method of dating ancient human migration - even when no corroborating archaeological evidence exists. http://www.physorg.com/news163342792.html Biology Thu, 04 Jun 2009 14:00:16 EST news163342792 Densely packed wildebeests flowing over the Serengeti, bison teeming across the Northern Plains -these iconic images extend from Hollywood epics to the popular imagination. But the fact is, all of the world's large-scale terrestrial migrations have been severely reduced and a quarter of the migrating species are suspected to no longer migrate at all because of human changes to the landscape. A recently published research paper highlights this global change and presents the first analysis of the dwindling mass migrations. http://www.physorg.com/news163071238.html Biology Mon, 01 Jun 2009 10:34:49 EST news163071238 Humans may be programmed by evolution to care about the future of the environment, suggests research published today. http://www.physorg.com/news162639068.html Biology Wed, 27 May 2009 10:31:49 EST news162639068 Research led by David Worthylake, PhD, Assistant Professor of Biochemistry and Molecular Biology at LSU Health Sciences Center New Orleans, may help lay the groundwork for the development of a compound to prevent the spread of cancer. The research will be published in the May 29, 2009 issue of the Journal of Biological Chemistry. http://www.physorg.com/news162132055.html Chemistry Thu, 21 May 2009 13:41:33 EST news162132055 (AP) -- Blue whales are returning to Alaska in search of food and could be re-establishing an old migration route several decades after they were nearly wiped out by commercial whalers, scientists say. http://www.physorg.com/news161845979.html Biology Mon, 18 May 2009 06:13:35 EST news161845979 (PhysOrg.com) -- Scientists at the University of Glasgow have unravelled the woolly history of sheep domestication by examining retroviruses preserved in the animal`s DNA. http://www.physorg.com/news159802675.html Biology Fri, 24 Apr 2009 14:38:55 EST news159802675 Bird migrations are likely to get longer according to the first ever study of the potential impacts of climate change on the breeding and winter ranges of migrant birds. http://www.physorg.com/news158992205.html Biology Wed, 15 Apr 2009 05:30:39 EST news158992205 (PhysOrg.com) -- For those who think of nature as a wild, unspoiled Eden that preserves the natural flora and fauna free from human interference, global warming has a nasty surprise in store, according to University of California, Berkeley, biologist Anthony Barnosky. http://www.physorg.com/news158851283.html Space & Earth Mon, 13 Apr 2009 14:22:12 EST news158851283