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Tag: "markers" at biology news

Nanowire arrays can detect signals along individual neurons

...owires can detect, with great precision, molecular markers indicating the presence of cancer in the body, as well as single viruses. Their latest work takes advantage of the size similarities between ultra-fine silicon nanowires and the axons and dendrites projecting from nerve cells: Nanowires, like neurona...

Radiation-armed robot rapidly destroys human lung tumors

...x-ray pictures of the patient while using external markers attached to the patient's chest or abdomen to follow tumors in real time with a few millimeters of accuracy. The researchers also applied Synchrony to treating tumors in the thorax and abdomen, which can move as much as 4 cm during respiration. ...

Possible birthplace of malignant brain tumors identified

...ignificant due to our limited knowledge of surface markers for neural stem cells. Our data also provide evidence of a link between these PDGFRá B cells and the early changes associated with tumor initiation, suggesting they may be targets of neoplastic transformation. The regression of atypical hyperplasia a...

Researchers uncover new mechanism of tumor suppressor

...Their findings, which could lead to new diagnostic markers and cancer treatments with fewer side effects, will appear in two reports in the May 21 advanced online version of the journal Nature. The studies, led by Tatiana Kutateladze, PhD, an assistant professor in the UCDHSC Department of Pharmacology, and...

Connect the Quantum Dots

...significant implications for the design of disease markers and the development of chemoreceptors used in huma...trategy can be designed to signal specific disease markers in biological samples thus replacing conventional organic dyes in a diversity of imaging and sensing...

Smooth sailing: 'cruise ship virus' tackled by UH, Baylor College of Medicine

...oscale for items such as reflective vests and lane markers on roads. Ruchhoeft, however, will create retroreflectors that measure just a few micrometers wide. Three sides of the reflectors will be covered with reflective material and will be populated with the Norwalk antibody. These retroreflectors wi...

Gene therapy injected into the brains' of mice with Huntington's disease

...enerative disorders, identification of the genetic markers provides a unique opportunity to intercede therapeutically before or extremely early in the disease process–only a small fraction of potential carriers get tested. But, if there was a treatment, especially one that altered the natural course of disea...

Biologists find regions of rice domestication

...ding both wild and domesticated, and found genetic markers that reveal the two major rice types grown today w...heir collaborators concentrated on finding genetic markers shared by both cultivated and wild rice types that ranged from 800 to 1,300 base pairs. Cultivated...

New understanding of parasite cell structures may provide treatments for serious tropical diseases

...re involved with cellular energy and also serve as markers for cellular recognition. The researchers discovered a new function for these glycolipids--they are cleaved in response to cell stress caused by changes in osmotic pressure and relative acidity or alkalinity. The research by the UGA team is especia...

OHSU study says stem cell 'fusion' occurs in tumors

...e tumor cells, the scientists detected proteins or markers from both the female donor and male recipient cell...s in tumors. The only way both donor and recipient markers could be present in a single cell, or colocalized, would be if the two cells fused. One test to pro...

Electric fish in Africa could be example of evolution in action

...sed to find no detectable variation in the genetic markers we studied," Arnegard said. Because all of the 20 or so species of mormyrid have distinct electric signals, Arnegard believes the different impulses of the fish he studies might be their first step in diverging into different species. "This might...

Researchers find that bumblebees' flower choice matters

...o nine different plants. So Karron uses genetic markers to unambiguously determine which plant fathered each of the thousands of seeds he samples. He is working backwards to get at the same question Flanagan seeks ?where the bees have been. He divides each of the plants in the garden to create an exact ...

Female pronghorns choose mate based on substance as well as show

... also of the University of Idaho, obtained genetic markers for all pronghorn individuals in the population and assigned paternity to the offspring. "The females' mate sampling creates a small group of males that each year sire more than one-half of all young," said Byers, who is currently serving as a prog...

Study offers innovative profile of enzyme that aids tumor growth

...3 itself, might be considered potential diagnostic markers for ovarian cancer." This experimental method of ...att said. "This could lead to the discovery of new markers for diagnosis and targets for treatment." ...

Affymetrix 500K array used to identify memory gene

...x Human Mapping 500K Arrays to analyze 500,000 DNA markers simultaneously, providing a genetic blueprint for the memory-study participants. The researchers discovered the Kibra gene by comparing the genetic blueprints of people with good memory vs. poor memory and looking for the genetic variations consisten...

Gene chip technology shows potential for identifying life-threatening blood infection

...he goal of identifying all the genes that might be markers of inflammation and infection. They found small in...ies are focused on narrowing the number of genetic markers in patients to make it practical to develop a bedside test to screen for signs of infection. He is a...

Walking not enough for significant exercise benefits

...ur per cent for the group who just walked. Other markers of overall health, such as fasting plasma glucose levels, response to a two-hour glucose tolerance test and various blood lipids were unaffected by either exercise program. "Our concern is that people might think what matters most is the total numbe...

Professors to develop hand-held pathogen testing device

...holera toxin is harmful. These genes serve as good markers for detection. Hashsham's device will be designed to look for such marker genes. "This technology is rugged and highly parallel; it can analyze lots of marker genes in a lot of samples, together with significantly lower false positives," Hashsham ...

UCSD researchers discover internal compass of immune cell

...se to detect and migrate towards chemoattractants, markers of infection and inflammation that are released from bacteria and inflamed tissues. "These findings solve the long-standing puzzle of how neutrophils find their way and move toward sites of injury or infection in the body," said senior author Wolfg...

Resistance and genetic sensitivity to sleeping sickness

...site interactions, by means of identifying genetic markers signalling risk. That should open the way in the long term to possible development of innovative control strategies against sleeping sickness. ...

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