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Barrier in Biological News

Investing wisely to save the Great Barrier Reef

CSIRO science is being used to improve land management practices on farmland to help reduce run-off of sediments, nutrients and pesticides on to the Great Barrier Reef. A decision support process facilitated and designed by CSIRO, Australian Government Reef Rescue team and the Bureau of Rural S...

Compromised skin barrier function plays a role in psorasis development

Researchers at the Genome Institute of Singapore (GIS) and the Anhui Medical University, China, have identified genes that play an important role in the development of psoriasis, a common chronic skin disease. The research, led by GIS Human Genetics Group Leader and Associate Prof. Liu Jianjun,...

Fear of hypoglycemia a barrier to exercise for type 1 diabetics

This press release is available in French . Montreal, November 26, 2008 According to a new study, published in the November issue of Diabetes Care , a majority of diabetics avoid physical activity because they worry about exercise-induced hypoglycemia (low blood sugar) and severe conseque...

Leading experts cite poor health and nutrition as major barrier to education in developing world

The book (School Health, Nutrition and Education for All) argues that the education of children will greatly improve if the programmes to improve health and nutrition, which have reduced major diseases in poor communities, are replicated across the developing world. Matthew Jukes, one of the ...

Auto immune response creates barrier to fertility; could be a step in speciation

Plant biologists at the Max Planck Institute of Developmental Biology and the University of North Carolina at Chapel Hill have discovered that an autoimmune response, triggered by a small number of genes, can be a barrier to producing a viable offspring. Studying Arabidopsis thaliana, sometimes...

GEN reports on strategies to overcome blood-brain barrier

New Rochelle, NY, February 5, 2009The blood-brain barrier (BBB) remains a major obstacle to the successful delivery of drugs to treat central nervous system (CNS) disorders, reports Genetic Engineering and Biotechnology News ( GEN ). Researchers are exploring a variety of approaches to preserve ...

Building the blood-brain barrier

Construction of the brain's border fence is supervised by Wnt/b-catenin signaling, report Liebner et al. in The Journal of Cell Biology . Like many a modern nation, the brain requires tight border security to maintain levels of nutrients and keep out toxic substances. The bloodbrain barrier (BBB...

Blood-brain barrier breached by new therapeutic strategy

A major obstacle in the treatment of infections and other diseases of the brain is the blood-brain barrier, which prevents systemically delivered therapeutic drugs from reaching the brain. Grantees of the National Institute of Allergy and Infectious Diseases, part of the National Institutes of Hea...

CSIRO imagery shows Outer Great Barrier Reef at risk from river plumes

A stunning series of satellite imagery of Australia's Great Barrier Reef released by the CSIRO shows for the first time visual confirmation of the theory that sediment plumes travel to the outer reef, and beyond. The remotely sensed images, taken from February 9 to 13 this year, challenge conve...

Cell barrier shows why bird flu not so easily spread among humans

Although more than 100 people have been infected with the H5N1 avian influenza virus, mostly from close contact with infected poultry, the fact that the virus does not spread easily from its pioneering human hosts to other humans has been a biomedical puzzle. Now, a study of cells in the human re...

Divergent mating systems and parental conflict as a barrier to hybridization in flowering plants

Sexual reproduction can be thought of as a cooperative process in which two individuals come together to produce a new individual. It can also be viewed as a process in which two parties with differing interests, investment, and background interact to produce a new individual. From the former persp...

Primate virus jumps species barrier to humans for first time in Asia

Scientists have identified the first reported case in Asia of primate-to-human transmission of simian foamy virus (SFV), a retrovirus found in macaques and other primates that so far has not been shown to cause disease in humans. The transmission of the virus from a monkey to a human took place at ...

Holding breath for several minutes elevates marker for brain damage

...f the increase in S100B among the divers probably indicates the blood-brain barrier has been compromised, allowing the protein to escape from the fluid in the brain into the circulation. The blood-brain barrier controls what passes between the brain and the circulation. S100B would nor...

'Shifting Sands' highlights past, present and future of Maryland coastal bays ecosystem

... has teamed up to author Shifting Sands: Environmental and Cultural Change in Maryland's Coastal Bays, a comprehensive look at the coastal lagoons and barrier islands making up Maryland's Atlantic coastline. Published by IAN Press, Shifting Sands leads the reader through the history, setting, context and ...

A crystal ball for brain cancer?

...results in swelling, which boosts water's ability to move freely in the tumor and brain tissue. As cells disintegrate, they no longer pose a physical barrier to water movement. "We theorized that tumors with more water motion would also have higher VEGF levels," explained Pope. "Because Avastin target...

Experimental treatment halts hypoxic-ischemic brain injury in newborns

...nd that hypoxia-ischemia leads to increased tPA activity. The enzyme then damages the brain blood vessels and the blood-brain barrier. The blood-brain barrier is a protective system designed to prevent invasions of blood-borne materials, in particular inflammatory cells or potential contaminants, into the ce...

Scripps-led study shows ocean health plays vital role in coral reef recovery

...d the coral turns white in color. The fast-recovering were corals collected from Turneffe Atoll, which is farther offshore than the main Belize barrier Reef and Cayos Cochinos, a marine biological reserve off the northern coast of Honduras. Those that took longer to recover to pre-1998 conditions wer...

Wolf reintroduction proposed in Scottish Highland test case

...n local residents may have no memory of what it once looked like. "The long-term absence of any organism or ecosystem from a region can be a major barrier to restoration," the scientists wrote in their report. "Over generations, human memory of an ecosystem, or the presence of a particular organism dimin...

A global model for the origin of species independent of geographical isolation

...cess of "speciation" -- the evolutionary process by which new biological species arise -- dominates evolutionary theory. The first requires a physical barrier such as a glacier, mountain or body of water to separate organisms enabling groups to diverge until they become separate species. In the second, an en...

'Show me the money!' MDA greenlights grants

...iego, Hristelina Ilieva of the Ludwig Institute for Cancer Research has been awarded $180,000 over three years to study how defects in the blood-brain barrier contribute to amyotrophic lateral sclerosis (ALS), or Lou Gehrig's disease. Ilieva hopes to find a way to use genetic therapy to treat hereditary ALS....

22nd Congress of the European College of Neuropsychopharmacology, Sept. 12-16, 2009, Turkey

...9.3 billion for depression and anxiety-related disorders (McDaid, 2008). Furthermore, mental disorders are common in older people and represent a barrier for active ageing (Jan-Llopis & Gabilondo, 2008): Poor physical health and functional limitations are central to the concerns of many older people and...

New lab test offers better prediction of HIV microbicide safety

...re tightly packed together, forming an impermeable barrier to HIV. If a microbicide disrupts the barrier's st...nt. It was composed of two chambers separated by a barrier of cultured human cells that form tight junctions....f the T cells over time. When the epithelial barrier was treated with placebo, HIV was unable to pass t...

US-Mexico border wall could threaten wildlife species

...ion Biology . "The biggest concern is that this barrier will break small populations of animals into even ...te University and co-author on the study. "A major barrier such as this could lead to significant degradation...ions on both sides of the fence. An impermeable barrier would isolate sheep populations and potentially re...

The sound of light: Innovative technology shatters the barriers of modern light microscopy

...hen German Research Center for Environmental Health and chair for biological imaging at the Technische Universitt Mnchen, has now broken through this barrier and rendered three-dimensional images through at least six millimeters of tissue, allowing whole-body visualization of adult zebra fish. To achieve...

Singapore nanotechnology combats fatal brain infections

... that enables them to pass through the blood brain barrier to the infected areas of the brain that require tr... peptide nanoparticles to traverse the blood brain barrier offers a superior alternative to existing treatmen...ticle, we have found a way through the blood brain barrier and produced a treatment for previously challengin...

New nanoparticles could revolutionize therapeutic drug discovery

...studies have concentrated largely on soluble proteins as membrane proteins are so difficult to make. However, the discovery of the SAMLPs removes this barrier and opens up access to membrane proteins - this has exciting clinical implications as it may enable drug discovery on receptors that are currently too...

Study characterizes eczema patients most at risk for dangerous viral infections

...ergy and Clinical Immunology , could help identify people at risk for serious complications of smallpox vaccinations, and point to defects in the skin barrier and antimicrobial-protein production as possible causes for the increased susceptibility. "Previous studies have suggested that eczema is not only b...

Coral face 'a stormy future'

...lding coral species recruited successfully." "This finding mirrors our modelling studies on the fringing reefs of Jamaica, and on the Meso-American barrier reef off the coast of Belize", says Prof. Crabbe. Tobago lies outside the main Caribbean hurricane belt and therefore is more typical of the circum...

Gear bans 'can help save reefs'

...types of gear can apply to virtually any coral reef management whether in the developing world or in developed countries such as on Australia's Great barrier Reef. "In principle, it can be used anywhere. It offers both communities and reef managers much greater flexibility. Around the world, communitie...

Help for climate-stressed corals

...types of gear can apply to virtually any coral reef management whether in the developing world or in developed countries such as on Australia's Great barrier Reef. "In principle, it can be used anywhere. It offers both communities and reef managers much greater flexibility. Around the world, communitie...

Scientists sequence genome of the N2-fixing, soil-living bacterium Azotobacter vinelandii

...vided important information on the genes that code for alginate, a polymer that further protects the organism from excess oxygen by forming a physical barrier around the bacterium. " A. vinelandii is an attractive model organism for biochemical studies because of its ability to produce high yields of qu...

Rosenstiel students come out on top

...nued to work primarily in Baker's coral lab. Parkinson also spent a semester abroad at Australia's James Cook University to study corals in the Great barrier Reef. Parkinson was awarded the NSF fellowship for his proposal to examine the response of coral larvae and their symbiont communities to stressor...

Potential for non-invasive brain tumor treatment

...n orally affects the whole body and has difficulty crossing the blood-brain barrier in sufficient concentrations," Herickhoff said. The blood-brain barrier restricts the passage into the brain of any foreign matter not needed by th...

In the turf war against seaweed, coral reefs more resilient than expected

...verall "phase shift severity" decreased in the Caribbean, did not change in the Florida Keys and the Indo-Pacific, and increased slightly on the Great barrier Reef due to moderate coral loss. "Overall, our results indicate that there is no general recent trend (i.e., post-1995) toward marcoralgal dominanc...

One size does not fit all

... the dampening of the immune response. This issue required further investigation, particularly due to the ability of statins to cross the blood-brain barrier and access the CNS, and the enrichment of cholesterol in the myelin sheath." The objective of the MNI study was to determine the direct impact of s...

Tips from the American Journal of Pathology

... the June 2009 issue of the American Journal of Pathology . The eyes, like the brain, are an immune-privileged site; the so called blood-retinal barrier limits access of immune cells to the eyes. After eye damage, however, immune cells remove damaged cells. To locate the source of the immune cell...

Breakthrough in the treatment of bacterial meningitis

...ococcus pneumoniae , Neisseria meningitidis , and Haemophilus influenzae . The mechanism used by these lethal germs to break through the blood brain barrier (BBB) has, until now, been unknown. The team led by Dlawer Ala'Aldeen, Professor of Clinical Microbiology and Head of the Molecular Bacteriology a...

Rules proposed to save the world's coral reefs

...d areas, the team led by Pew Fellow Dr Laurence McCook of Australia's Great barrier Reef Marine Park Authority (GBRMPA) argues. "Ecological connectivity is ...ults of research carried out in the Bohol Sea in the Philippines, the Great barrier Reef in Australia, and Kimbe Bay in Papua New Guinea. These rules are: ...

Prefilled WFI Syringe Provides a High-Quality Solution for Drug Reconstitution

...em.” The syringe features a plunger with West’s FluroTec® barrier film and Vetter’s V-OVS® tamper-evident closure, which includes a...eveloped by West’s partner, Daikyo Seiko, Ltd., provides an effective barrier against organic and inorganic extractables, which helps maintain the purity...

A big lesson from the reef

... The lesson from Australia's Great barrier Reef is that we have to protect its biodiversity ...nd maintain their amazing diversity. "The Great barrier Reef is one of the richest systems of living thing...pse in the populations of reef sharks on the Great barrier Reef from over-fishing and his work is now helping...
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(Date:4/17/2014)... In the most densely forested and most densely populated ... of human needs, values and practices. Disturbances associated with ... agriculture and development, have set the stage for management ... study reports. , The report Five anthropogenic factors ... in the Northern United States was published ...
(Date:4/17/2014)... of stem cell therapies to cure a variety of ... populations based on cell surface markers. Researchers from the ... is highly expressed in a type of stem cells ... in an article in BioResearch Open Access , ... The article is available free on the ...
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(Date:4/17/2014)... study published today in PLOS Pathogens , children ... is common can mount an immune response to infection ... repeated bouts of high fever and illness and partially ... The findings may help researchers develop future interventions that ... parasite. , Each year, approximately 200 million cases of ...
(Date:4/17/2014)... in the April issue of Immunity , Kevin ... Medical Research, says it,s time to take a fresh ... sepsis, which kills millions worldwide every year, including ... released into the bloodstream to fight an injury or ... for maintaining good health without inflammation, wounds and ...
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