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Tag: "containing" at biology news

Bioartificial kidney under study at MCG

Whether a bioartificial kidney containing billions of donor kidney cells will help intensive care patients with kidney failure survive is under study at the Medical College of Georgia. MCG Medical Center has joined a study taking place in intensive care units across the country to evaluate ...

Man and mouse share genome structures

...two shortest human chromosomes, numbers 21 and 22, containing about two percent of the human genome. They also s... of histone tags spread over the regions of genome containing the HOX genes, which are key regulators of development. "In most of the genome, we see short stretc...

Tiny particles could solve billion-dollar problem

...lop a device that would include a cylindrical pump containing a catalytic membrane of the gold-palladium nanoparticles. The device would be placed down existing wells where it would pump water through continuously, breaking TCE into non-toxic components. Cost is the primary hurdle to cleaning up TCE-polluted g...

Novel antiviral technology inhibits RSV infection in mice

...s."Dr. Mohapatra and his team developed nose drops containing vectorscapable of producing small fragments of RNA (siRNA). These fragmentswere encapsulated within chitosan nanoparticles -- minisculenaturally-occurring, biodegradable particles that stick tomucous-producing cells lining the lungs. The RNA produced...

Gene therapy converts dead bone graft to new, living tissue

...e genes, devised a method of freeze-drying a paste containing the virus so it could be easily handled, and painted it directly onto a bone graft during surgery. Numerous tests in mice confirmed that the virus permeated the inflammatory tissue around the dead bone and turned on the genes. The mouse body then be...

An HIV Protein Plays a Surprising Role in Gene Activation

... TATA box is called TFIID, a large protein complex containing a protein that binds the TATA box (aptly named the TATA-box-binding protein, or TBP) and several cofactors called TBP-associated factors (TAFs). PIC assembly sometimes also requires activator proteins, which can enhance transcriptional activity by su...

New Clues Add 40,000 Years to Age of Human Species

...active decay. Brown and McDougall collected rocks containing volcanic debris, which McDougall dated to approximately 195,000 years old. Forty years ago, radiometric dating methods were less accurate and suggested an age of roughly 130,000 years. No one was able to securely tie both sets of fossils to the sam...

Muscle-targeted gene therapy reverses rare muscular dystrophy in mice

... Six weeks after muscular injection with the virus containing the muscle-restricted gene, mice exhibited high levels of the enzyme and reduced glycogen content in the injected muscle. The mice also had a reduced immune response to the new enzyme, compared to those in which gene expression was not limited to mus...

Enzyme shown to help protect genomic stability

...gments that are inactive, lengthy stretches of DNA containing multiple genes that are closed to gene transcription. Scientists believe one reason for this broad gene silencing is the vital need for genomic stability, for protection against unwanted recombinations of genetic material or other disruptions of the ...

Scientists decipher genome of fungus that can cause life-threatening infections

...nvolved incapsule biosynthesis, including a family containing 7 members of thecapsule associated (CAP64) gene.Researchers compared two closely related genomes of C. neoformans thatdiffer markedly in their virulence properties. The results indicatethat the differences likely involve other factors than the absenc...

Purdue proves concept of using nano-materials for drug discovery

...d then plan to use those membranes to create chips containing up to 1 million test chambers. Each chamber would be covered with a membrane containing the proteins, and the chambers could then be used to search for drugs that deactivate the pumps, Lee...

In the sea slug's defense against lobsters, confusion is key

...a State University, discovered that in addition to containing unpalatable, aversive chemicals, Aplysia's inky secretion contains large quantities of chemicals that are also found in the food of spiny lobsters and that indeed these chemicals serve to activate nervous-system pathways that control feeding behavior...

Genetically modified natural killer immune cells attack, kill leukemia cells

...f NK cells, the team started with samples of blood containing a variety of different immune system cells. They placed this sample into a dish containing a type of human leukemia cell called K562. Campana's team genetically modified the K562 cells so the...

Scientists develop new color-coded test for protein folding

...udent Matthew R. Hammond created a liquid solution containing nano-sized particles of gold saturated with a protein called cytochrome c. "We chose gold nanoparticles because they are simple to prepare, easy to control and cost effective," the authors wrote. "To the best of our knowledge, however, gold nanopart...

Study shows nanoshells ideal as chemical nanosensors

... with various densitieswere studied, as were films containing both silver and gold nanoshells.Through painstaking analysis, Halas and Jackson showed that thenanoshells' 10 billion-fold increase in Raman effect was due entirelyto the interactions of light with individual nanoshells. This ismarkedly different fro...

Researchers find missing genes of ancient organism

...ember of a new phylogenetic kingdom in the Archaea containing organisms that are primitive, parasitic and extremophile, or notable for living in the most extreme environments. Surprisingly, Söll's team found that, although the genome of Nanoarchaeum lacks several intact tRNA genes, functional forms of those tR...

Amino acids in nectar enhance butterfly fecundity: A long awaited link

...val food conditions laid more eggs when fed nectar containing amino acids. These results provide the long missing evolutionary link between costly nectar amino acid production by plants, nectar preferences of and fitness benefits to butterflies. This article by Jovanne Mevi-Schütz and Andreas Erhardt will appe...

Scientists discover unique microbe in California's largest lake

...ology professor Michelle Wood. She obtainedsamples containing the organism while studying the diversity ofblue-green algae in the hypersaline lake as part of the comprehensivestudy of the Salton Sea coordinated by Professor Stuart Hurlbert,director of the Center for Inland Waters at San Diego State University. ...

Circles Of DNA Might Help Predict Success Of Stem Cell Transplantation

...that are produced in the blood as the parent cells containing sjTRECs divide and produce daughter cells, the more the sjTRECs in those original T cells get "diluted" within the growing army of these immune cells. This proves that high levels of sjTREC in blood means that a large number of stem cells have been c...

Study Models Impact Of Anthrax Vaccine

...icymakers who must develop effective strategiesfor containing an anthrax outbreak. The study is published in theDecember 16, 2004, edition of Nature. TheHopkins researchers developed a probability model to predict how manycases of anthrax could be prevented under varying conditions. The studyfound that about 7...

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