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Tag: "study" at biology news

A gene's first 'kiss' sets off that affair known as puberty

...ypothalamus just as puberty begins, according to a study published in this week's online edition of the Proceedings of the National Academy of Sciences (PNAS). Until now, little had been known about what instigates the cascade of hormone secretions that, over time, produces puberty's tell-tale physical ...

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

...for precision drug delivery, according to a recent study in the Journal of the American Chemical Society. S...ification procedures, the investigators say. Their study was published in the Dec. 29 print issue of the journal, one of the peer-reviewed publications of th...

Bioartificial kidney under study at MCG

...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 the efficacy of the renal assist...

Viral DNA sequence a possible trigger for breast cancer

...orm breast cells into cancer cells, according to a study by Katz et al. in the February 7 issue of The Jour...of Env in mouse breast cells transforms them. This study puts the spotlight on a potential new mechanism for virus-induced breast cell transformation, which ...

Wisconsin scientists grow critical nerve cells

... neuron modeling systems to screen new drugs, says study leader Su-Chun Zhang, an assistant professor of anatomy and neurology in the Stem Cell Research Program at the Waisman Center at UW-Madison. Scientists have long believed in the therapeutic promise of embryonic stem cells with their ability to repli...

Association of herpesvirus with lung disorder questioned

...the investigators concluded. In contrast, the 2003 study identified evidence of HHV-8 in ten of 16 samples ...rs noted that while their results call the earlier study results into question, there are other possible explanations for the divergent data. For example, th...

Man and mouse share genome structures

In the most detailed large-scale study to date of the proteins that package DNA, researchers have mapped a family of switches that turn genes on and off. Their findings may help scientists understand regulatory mechanisms underlying cancer and human development. The research team include...

Deficient DNA Repair Capacity Associated With Increased Risk Of Breast Cancer

...ncreased risk of breast cancer, according to a new study in the January 19 issue of the Journal of the National Cancer Institute. DNA repair is the system of defenses designed to protect the integrity of the genome. Studies have suggested that deficiency in cells' capacity for DNA repair contributes to ...

Researchers discover way to make cells in the eye sensitive to light

...hotosensitive has given us a unique opportunity to study thecharacteristics of this interesting protein. The textbook view of theeye is that it contains only two light sensing systems, the rods andcones. However, over the last few years it has become increasinglyaccepted that we have a third system, which ...

Quantum Dots Research Leads to New Knowledge about Protein Binding in Plants

...previously by conventional imagingtechniques. This study provides a new tool to botanical scientists bymerg...een utilized forlive imaging in plant systems. The study opens the door for thepotential use of Quantum Dots in live imaging of plant cells andprovides valua...

Source of molecular triggers in cutaneous T cell lymphoma identified

In a study published in the journal Blood, Yale scientists id...es, and of normal but usually inactive genes. The study reports that CTCL develops from a small subset of lymphocytes that are pre-programmed to respond to ...

Protein discovery could unlock the secret to better TB treatment

...s infects around 10 to 15 people every year. In a study published on 1st March 2005 in Nature Structural & Molecular Biology, a combined team discovered the structure of a protein known as resuscitation promoting factor (Rpf). Five versions of the Rpf protein exist in TB bacteria. The paper's unveilin...

W.M. Keck Foundation funds study of friendly microbes

...l of Medicine will help fill this gap by funding a study to develop new approaches for isolating, sequencin...t bacteria are difficult or impossible to grow and study outside of the intestine. With the support provided by the Keck Foundation, the researchers will cre...

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

...ecause it's one of the few times we'vebeen able to study microbes to get information on an entire ecosystem.That's never before been possible."The study was specifically designed to determine the main source ofmetabolic energy that drives microbial comm...

It's not all genetic: Common epigenetic problem doubles cancer risk in mice

...e may be similar, the researchers report. A larger study of samples from patients with and without suspected colon cancer is underway, Feinberg notes. In the mice -- as well as in about 30 percent of colon cancer patients and 10 percent of the general population -- the extra IGF2 stems not from a genetic ...

Columbia research lifts major hurdle to gene therapy for cancer

...in theprocess of eradicating cancer cells.In a new study published in the Jan. 25 issue of the Proceedings ...ents. Other investigators associated with the PNAS study includeDrs. Zao-zhong Su (research scientist), Devanand Sarkar (associateresearch scientist) and Lun...

Novel technology detects human DNA mutations

...iam Moffitt, Nanosphere's President and CEO. "This study and the use of nanoparticles to dramatically increase sensitivity in our other proprietary applications -- such as bio-barcode for ultra sensitive detection of proteins -- demonstrate the broad applicability of nanotechnology and its potential to mar...

Topical treatment shown to inhibit HIV and herpes simplex virus infection

...tive, randomized, double blind, placebo-controlled study among 20 HIV-infected women to assess the antivira... this study. "We are currently conducting a 14-day study to assess whether or not there is an inflammatory response after repeated applications." ...

Growth in the sea comes down to a struggle for iron

...cs Study), an ongoing effort that began in 2001 to study the ecological consequences of injecting iron into the ocean. For more than a century, oceanographers puzzled over the low abundance of phytoplankton in some ocean waters that seemed to hold all the basic nutrients for life. Speculation that iron pr...

New, automated tool successfully classifies and relates proteins in unprecedented way

...stering of proteins inside cellimages, we also can study thousands of images fast, objectively andwithout error," Murphy said.Murphy's tool has two key components. One is a set of subcellularlocation features (SLFs) that describe a protein's location in a cellimage. SLFs measure both simple and complex asp...

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