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Tag: "confirmed" at biology news

Common ancestry of bacterium and plants could be key to an effective new treatment for chlamydia

...ad detected in Chlamydia. "Further experimentation confirmed that the Chlamydial gene had the same function as the Arabidopisis gene demonstrating their common ancestry," said Leustek. "If they had evolved separately, it would be impossible for the sequences to match so closely." The ability to easily compa...

Heavy smoking cuts women's chance of pregnancy -- even with donated oocytes

...4.1%) of the heavy smokers. "This means we have confirmed previous data that show light smoking has no signi...lies in a large number of cases. However, if it is confirmed as a real association it suggests that, paradoxically, tobacco constituents affect the uterus in dif...

Learning during sleep?

... nerve cells interact during sleep consolidation," confirmed Edvard Moser, Director of the Centre for the Biology of Memory in Trondheim, Norway. It has been difficult up to now to use experiments to examine the brain processes that create memory. The scientists in Heidelberg developed an innovative experim...

Selecting life: Scientists find new way to search for origin of life

...rentially adhere to left-faced calcite. That study confirmed previous theoretical suggestions of a plausible process by which the mixed right- and left-handed -amino acids in the primordial soup could be concentrated and selected on a readily available mineral surface. The challenge since has been to determine...

'GreeneChip' -- New diagnostic tool that rapidly and accurately identifies multiple pathogens

... the cases fatal. Although most of the cases were confirmed through PCR as caused by Marburg virus, some were not. During this outbreak, a healthcare worker from a nongovernmental organization had acute fever and liver failure that culminated in death within one week. PCR assays of RNA extracted from bl...

Firefighters face increased risk for certain cancers

...cancer than non-firefighters. The researchers also confirmed previous findings that firefighters are at greater risk for multiple myeloma. Grace LeMasters, PhD, Ash Genaidy, PhD, and James Lockey, MD, report these findings in the November edition of the Journal of Occupational and Environmental Medicine. Th...

First major study of mammalian 'disorderly' proteins

...al turned up the heat on "disorderly" proteins and confirmed that most of these unruly molecules perform critical functions in the cell. The St. Jude team completed the first large-scale collection, investigation and classification of these so-called intrinsically unstructured proteins (IUPs), a large group of...

Ebola-outbreak kills 5000 gorillas

...y monitored gorilla population where genetic tests confirmed Ebola as the cause of death. Bermejo and colleagues from the Max Planck Institute for Evolutionary Anthropology and Uppsala University first showed that 93% (221 of 238) individually known gorillas at the Lossi Sanctuary in northwest Congo were kille...

Study illuminates how the plague bacteria causes disease

... the domain acted as a mimic. Further examination confirmed the domain to be a mimic of mammalian "guanidine nucleotide dissociation inhibitor" (GDI) proteins with a critical role in the bacteria's ability to disrupt cell structure. The domain paralyzes cells by acting as an "off-switch" for host proteins inv...

Mapping the mouse genome

...rates separately for male and female HS mice, they confirmed results seen previously for humans, that the average autosomal (non-sex) chromosomes had a higher recombination rate for females than males. Observing where there was a particularly high, or low, rate of recombination, the authors identified "jung...

Lab-on-a-chip could speed up treatment of drug-resistant pneumonia

...t fighting the infection. The death of the bugs is confirmed by checking with a special dye. Once the bacteria-carrying fluid is injected into the chip, the entire procedure is automatic-- including the counting of fluorescent-marked cells, which is done by a computer -- and takes less than eight hours. ...

Embryonic patterning makes the feathers fly

...enchyme. Analyses of fluorescent-labeled cells confirmed an increase in mesenchymal cell motility following MAPK pathway inhibition. In the controls, rudimentary feather bud epithelia emerge by cell rearrangements and coordinated cell shape elongation. In inhibitor-treated explant epithelia, cells remain c...

Muscle and bone from an ink-jet printer

...bone- or muscle-like). Immunocytochemical analyses confirmed that the bio-ink patterns successfully directed differentiation of the MDSCs toward a myogenic or an osteogenic lineage in direct registration to patterns. The proof-of-concept experiment led to the formation of muscle- and bone-like tissues simul...

Developing uses for sugar-cane bagasse: Biotechnology applied to the paper industry

...ials at a larger scale, in an 18 litre bioreactor, confirmed the efficiency of the laccase production obtained using bagasse and ethanol (90 000 U per kg of dry bagasse after 30 days, representing the quantity needed for processing, without input of fungus, an extra 4 kg of bagasse). This bioprocess resulted i...

Protein 'fingerprint' in spinal fluid could spot Alzheimer's disease

...roven Alzheimer's disease. Those postmortem tests confirmed that the panel is over 90 percent sensitive in identifying people with Alzheimer's disease," says Kelvin Lee, the Samuel C. and Nancy M. Fleming Professor of Molecular and Cell Biology and associate professor of chemical and biomolecular engineering ...

Silver bullet: UGA researchers use laser, nanotechnology to rapidly detect viruses

...se limitations, antibody based tests often must be confirmed with a test known as polymerase chain reaction (PCR), which detects the virus itself by copying it many times. The test can take anywhere from several days to two weeks. Tripp said the latter is clearly too long, especially in light of emerging threa...

UCLA researchers unravel a mystery about DNA

... The changes in the distances between these tags confirmed that transcription proceeds initially through a "scrunching" mechanism in which, much like a fisherman reeling in a catch, RNAP remains in a fixed position while it pulls the flexible DNA strand of the gene within itself and past the enzyme's reactiv...

Jefferson scientists find high glucose before surgery raises risk of dangerous complications

... results can be difficult. The findings need to be confirmed in a randomized, prospective trial. He would like to next find out whether controlling blood sugar before and during surgery could actually result in a lower risk of blood clots and pulmonary embolism. He also would like to explore some of the pot...

World-wide warning of highly drug-resistant tuberculosis

...red, they add. Among 536 cases of tuberculosis confirmed at a rural hospital in South Africa earlier this year, 41% were multi-drug resistant and of those, 24% met the exact definition of being extensively drug resistant tuberculosis (also referred to as XDR tuberculosis). Such tuberculosis is almost untre...

Common cold virus leads to death in lung transplant patients

... able to clear the virus from their system. "We confirmed the persistence of a single strain in each of three lung transplant recipients clinically infected by rhinovirus," said Dr. Kaiser. "Two of the three had chronic upper respiratory tract infections. All three had relapsing lower respiratory infections...

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