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Tag: "studied" at biology news

Chemists create 'Superbowl' molecule; May lead to better health

... these bowl-shaped molecules have been extensively studied and refined by chemists for their wide range of potential uses, including drug delivery, chemical synthesis and as models for cell and viral behavior. Until now, these molecules have had a very limited carrying capacity. "The compounds we made are b...

Association of herpesvirus with lung disorder questioned

...were Japanese. For a control group, the scientists studied Kaposi's sarcoma tissue samples obtained from unrelated patients. Like the authors of the earlier study, Katano and colleagues performed two types of tests in the tissue samples, one to detect an antigen associated with HHV-8, the other to detect HH...

Jump-starting T Cells In Skin Cancer

...ne-specific killer T cells. Pierre Coulie's group studied anti-tumor T cells in patients vaccinated with a tumor antigen called MAGE-3. In one patient whose tumor regressed after vaccination, the authors found significantly more T cells specific for non-vaccine tumor proteins than were detected before vacci...

UCSB scientists probe sea floor venting to gain understanding of early life on Earth

...F. For this study, Haymon and her UCSB colleagues studied the "flanks" of the mid-ocean ridge, which –?at 40,000 miles long–?is the largest geological feature of Earth, and possibly the solar system. At the mid-ocean ridge the plates comprising the Earth's lithosphere move apart, lava wells up and freezes t...

UAB scientists discover the origin of a mysterious physical force

...tment of Chemistry at Imperial College London have studied this mysterious force in detail and have discovered where its origins lie. In the same way that a flag flutters in the direction the wind is blowing, at a microscopic level water molecules are gently attracted towards the direction in which an elect...

Enzyme, lost in most mammals, is shown to protect against UV-induced skin cancer

...he new work, Dr. Bert van der Horst and colleagues studied theeffects of CPD and 6-4PP lesions by providing mice with transgenesencoding CPD and 6-4PP photolyase enzymes.Although mice do not ordinarily produce these enzymes, which removeeither CPD or 6-4PP lesions by using visible light as an energy source,e...

Growth in the sea comes down to a struggle for iron

...ming together in multi-cellular aggregations. They studied the sinking rate, the slow process through which aggregations of diatoms sink into the deep sea, taking their carbon with them. The Kilo Moana returned to Hawaii after spending 42 days at sea. Early results suggest that the struggle for iron may ind...

Lack of enzyme turns fat cells into fat burners

...ty, and related problems."Wakil and his colleagues studied the oxidation of fatty acid andglucose in cultures of fat cells isolated from both normal and mutantmice that lacked ACC2. When the mice were fed a normal diet, fatty acidoxidation was 80 percent higher in the fat cells of the mice lackingACC2 when c...

Controversial drug shown to act on brain protein to cut alcohol use

...as apotent anti-addiction drug has been rigorously studied for the firsttime, confirming its ability to block alcohol craving in rodents, andclarifying how it works in the brain. The new research findings aboutthe drug Ibogaine open the way for development of other drugs toreverse addiction without Ibogaine'...

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

...at humans are uniquelydifferent from other mammals studied in that people do not expressNeu5Gc*. In a 2003 study**, the UCSD researchers found that humans havenaturally occurring antibodies that are directed against Neu5Gc. In thecurrent Nature Medicine paper, the scientists found that the humanembryonic ste...

Anti-bacterial additive widespread in U.S. waterways

... commonly used antimicrobial chemical thathas been studied in much greater detail because it is more easilydetectable.Using an empirical model and published data on the environmentaloccurrence of triclosan, the researchers predicted triclocarbanconcentrations for 85 U.S. streams. The study results suggest th...

Plants respond similarly to signals from friends, enemies

... plant to elicit a response. When the researchers studied L. japonicus plants missing the receptors that rec.... A similar relationship appeared when Weerasinghe studied the signals between plants and nematodes, even though the nematode provides no benefit to its host. ...

Affymetrix Unveils Plans to Double Plant and Animal Genome Microarray Offering

...l stresses in the winegrape-- Dr. Matias Kirst who studied SNP effects in expression analysis ofdiverse speci...prototype of the maize array-- Dr. Brett Tyler who studied transcriptional profiling ofPhytophthora sojae infection of the soybean plantThe Affymetrix GeneChip...

Scientists detect probable genetic cause of some Parkinson's disease cases

... of chromosome 12 called PARK8 byinvestigators who studied five families with a history of Parkinson'sdisease...ic mutation in other families and individualsbeing studied by the Parkinson's Study Group with NINDS support. In ananalysis of 358 families with a history of P...

“Nano-scissors?laser shows precise surgical capability

... axons of severalanesthetized C. elegans, a widely studied type of roundworm about onemillimeter long. A femtosecond is one millionth of a billionth of asecond.“The time is very important here,?she says. “Because it happens sofast, there isn’t enough time for heat to diffuse out, so we don’tdamage anything. ...

Breakthrough Microarray-based Technology for the Study of Cancer

...iesin cancer. Chromosomal changes incancer can be studied using Comparative genomic hybridization (CGH),which undergoes dramatic chromosomal changes, including loss,duplication and the translocation of DNA from one chromosome toanother, as cancer develops. Understanding these changes is key tounderstanding ...

Researchers reveal the infectious impact of salmon farms on wild salmon

...rty Krkosek. "Sea lice production from the farm we studied was four orders of magnitude - 30,000 times - higher than natural. These lice then spread out around the farm. Infection of wild juvenile salmon was 73 times higher than ambient levels near the farm and exceeded ambient levels for 30 kilometers of th...

Clam embryo study shows pollutant mixture adversely affects nerve cell development

...cell development. While scientists have previously studied the effectsof these pollutants individually, this ...solidissima) withdifferent combinations of BCE and studied their effects on nerve cellgrowth. "On a cellular level, clam neurons are extremely useful instudyin...

Study identifies predictors of HIV drug resistance in patients beginning triple therapy

...cell development. While scientists have previously studied the effectsof these pollutants individually, this ...solidissima) withdifferent combinations of BCE and studied their effects on nerve cellgrowth. "On a cellular level, clam neurons are extremely useful instudyin...

An HIV Protein Plays a Surprising Role in Gene Activation

...itiate HIV transcription, every one of the 11 TAFs studied appeared. None of them did so in the presence of Tat, suggesting that Tat-mediated HIV transcription doesn't rely on TAFs. Green and colleagues confirmed this hypothesis in experiments showing that Tat-driven transcription proceeded as usual in cells...

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