Tag: "parts" at biology news

Association of herpesvirus with lung disorder questioned

...rcoma, a type of cancer most commonly seen in some parts of Africa and southern Europe and in people infected with HIV. Primary pulmonary hypertension is characterized in part by vascular lesions in the lung, and may lead to heart failure. Some cases are associated with genetic susceptibility, the investig...

Scientists ID molecular 'switch' in liver that triggers harmful effects of saturated and trans fats

...sponsive element binding proteins. These important parts of the mechanism activate many key genes of lipid biosynthesis involving the pathways of cholesterol and triglycerides; these genes directed the liver to manufacture more cholesterol, which it does in the form of very low-density lipoproteins. The in...

Yellowstone microbes fueled by hydrogen, according to U. of Colorado study

... springs, streams and geothermal vents indifferent parts of the park and during different seasons. All of theenvironments had concentrations appropriate for energy metabolism.The team used computer-generated thermodynamic models to find out ifhydrogen was indeed the principle source of energy. "You can sme...

Current human embryonic stem cell lines contaminated UCSD/Salk team finds

...ther possibility being attempted bygroups in other parts of the world is to use human embryo-derivedconnective tissue cells as the feeder layer in the culture.A further solution might be a short-term culture in heat-inactivatedserum from the actual patient who is going to receive the therapy, thescientists...

Mouse brain cells rapidly recover after Alzheimer's plaques are cleared

...th abnormal amounts of different types of cellular parts knownas organelles," Holtzman explains. "Normally any given segment of anerve cell branch would have only very small amounts of theseorganelles."Nerve cells move organelles along their branches as a part of theirregular function. Holtzman suspects th...

Genome of deadly amoeba shows surprising complexity, evidence of lateral gene transfer

...he amoeba's genome surprised many scientists. "The parts list we identified implies that E. histolytica may have re-engineered aspects of its metabolism," says Loftus, citing the protist's loss of some genes and its apparent gain of other bacterial-like genes through lateral transfer. "This study will prov...

Key molecule in plant photo-protection identified

...th abnormal amounts of different types of cellular parts knownas organelles," Holtzman explains. "Normally any given segment of anerve cell branch would have only very small amounts of theseorganelles."Nerve cells move organelles along their branches as a part of theirregular function. Holtzman suspects th...

Male circumcision reduces risk of HIV transmission from women to men

...usunderstand why the virus is spreading rapidly in parts of Africa, andhelp define better HIV strategies for prevention in these settings....

Imaging Lymph Nodes with Nanoparticles

...te staging of cancers is one of the most important parts of thework up of patients for both prediction of prognosis and determinationof the most appropriate treatment. And an essential part of this workup is assessing whether or not there has been lymphatic spread. Currentmethods include surgical removal o...

“Nano-scissors?laser shows precise surgical capability

...or example, nano-sized units like nerve axons, the parts of nervecells that carry nerve impulses away from the cells to muscles or toother cells.“This tool opens up a new frontier for biologists studying nerveregeneration,?says Ben-Yakar. “We can also apply it to many otherstudies that require nanosurgery,...

Live Recombinant Adenovirus Vaccine Technique Explored

...y, which is not feasible for people living in many parts of the world,?explained Gary Ketner, PhD, senior author of the study and professor with the W. Harry Feinstone Department of Molecular Microbiology and Immunology at the Bloomberg School of Public Health. “The military developed oral vaccines for ade...

The secret lives of whales

... cursor around a screen and listen-in on different parts of the world. If he hears a whale singing, he can fix its location and position it in space and time and observe multiple animals that are 100’s of miles apart—cohorts of humpback singers moving coherently?and watch the collective migration of specie...

Experiments provide proof of how traveling in groups protects insects

...smitters the scientists recovered, often with body parts still attached, Lorch said. Researchers retrieved ...ust cost farmers and others a lot of money, but in parts of Africa and elsewhere, locusts can cause widespread famine because they consume crops, and the peo...

First 'atlas' of key brain genes could speed research on cancer, neurological diseases

...gulators, or switches that determine how different parts of the braindevelop ?and, in some cases, develop a...cally isolated and theirlocations within different parts of the brain pinned down.The map should tell scientists studying different parts of the brain,which ...

Experiments provide proof of how traveling in groups protects insects

...smitters the scientists recovered, often with body parts still attached, Lorch said. Researchers retrieved ...ust cost farmers and others a lot of money, but in parts of Africa and elsewhere, locusts can cause widespread famine because they consume crops, and the peo...

New Study from Affymetrix Laboratories Points to Changing View of How Genome Works

...Gingeras' team did not make any assumption of what parts of the genome might or might not be important to h...ften, transcripts from one strand of DNA can share parts of their sequence with overlapping transcripts from the same strand or even from the opposite strand...

Researchers find missing genes of ancient organism

... made up by splicing together sequences in distant parts of the DNA genome. The research led by Professor Dieter Söll in the Department of Molecular Biophysics and Biochemistry at Yale focuses on the most ancient organism with a known genome sequence. Nanoarchaeum equitans, is a member of a new phylogenet...

Researchers trace evolution to relatively simple genetic changes

...y populations, but these changes do not affect key parts of the molecule. In addition, one population in Japan used the same gene to evolve low armor, but has no changes at all in the protein coding region. Instead, Kingsley said, "the mutations that we have found are, we think, in the (gene's) control reg...

Octopuses occasionally stroll around on two arms, UC Berkeley biologists report

...y populations, but these changes do not affect key parts of the molecule. In addition, one population in Japan used the same gene to evolve low armor, but has no changes at all in the protein coding region. Instead, Kingsley said, "the mutations that we have found are, we think, in the (gene's) control reg...

Studies reveal methods viruses use to sidestep immune system

...e said. "Once we've done that, we hope to identify parts of the pathway to target with drugs to try to limit infection." Drugs called protease inhibitors currently are used to treat patients infected with HIV and have also shown promise in treating hepatitis C patients in experimental trials. "We now kno...

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