Tag: "needle" at biology news

Patch delivers longer, deeper relief from dental pain

...he patch reported feeling half as much pain from a needle stick, and some patients repor... more of the following dental procedures: a needle stick without injection, a needle stick with injection and scraping of the tooth...

U-M scientists find new genetic marker for prostate cancer

...cal utility of AMACR immunostaining on 94 prostate needle biopsies; the sensitivity and selectivity ratings ...igh rate of false positives, which can mean repeat needle biopsies and unnecessary surgery. U-M researchers say AMACR could act as a diagnostic marker for oth...

Hopkins researchers test new molecular marker for prostate cancer

...c tools is driven in part by uncertain outcomes of needle biopsies. "As many as 15 percent of needle biopsies are inconclusive and must be repeated," says De Marzo. A prostate needle biopsy is an unco...

Researchers to compare prenatal treatments for serious twin complication

...c fluid surrounding one fetus is drained through a needle inserted into the mothers abdomen. Another treatment, laser photocoagulation, uses heat from a laser, inserted through a flexible tube, or fetoscope, to seal off the blood vessels connecting the two fetuses. The goal of the laser treatment is to sepa...

Genetic testing, computer risk-assessment software prove effective in predicting breast cancer

...hrough fine-needle aspiration, using a small-gauge needle to extract clusters of cells. Euhus said cells also could be gathered for analysis using methods such as ductal lavage, where cells are collected from milk ducts. In addition to traditional microscopic examination for outward abnormalities, the cells...

Monkeys that drink heavily develop signs of liver disease, Wake Forest study shows

...eys by looking at blood samples, urine samples and needle biopsies?" "The animal model may be very useful in understanding alcoholism," said Cunningham. "We've worked out some procedures that allow us to analyze during the periods they are on the ethanol (alcohol.) We can carry out these studies indefinite...

Infrared antenna for nano-size mapping of crystal vibrations

...pplied through their antenna, which is the probing needle of their microscope: the known metal-like reflecti...4, 1999). The basic technique is to illuminate the needle of a scanning probe microscope with infrared light. While the needle scans over the sample the surfa...

Indonesia launches nationwide program to protect newborns against hepatitis B

... filled with asingle dose of vaccine, with a short needle attached. The vaccine isinjected by squeezing the ...ry of Health. "Unijecteliminates both the need for needle sterilization and the wastage of vaccinethat comes with using multi-dose vials. It makes our immuni...

Researchers successfully deliver drugs to the primate brainstem

...sue, in the area immediately surrounding where the needle was inserted during the infusion. The researchers then used a needle to target and deliver Gd-albumin into the pontine region (pons) of the brainstem in three healthy ad...

A bed of microneedles: Johns Hopkins scientists' gadget measures muscle cell force

...eal the force exerted by smooth muscle cells. Each needle tip in the gadget, whose development and testing i...s itself to much simpler calculations because each needle moves independently of the others and requires exactly the same force to move. "We know how diffi...

Dealing with reams of data

... called SNOMAD and DRAGON, can be used to find the needle in the haystack of microarray data. As an example, Pevsner applied the programs to microarray data from Down syndrome. "In some conditions, like autism, the biological cause is still unclear, but even in Down syndrome, which we know is the resu...

New tools speed drug discovery and disease research

...g for siRNA candidates has been like looking for a needle in haystack. Given a gene of 3000 nucleotides, there are 2980 possible siRNA candidates that might affect how the gene functions. (siRNA sequences are approximately 21 nucleotide bases long). The Biocomputing Group at Whitehead has greatly simplified...

Families with severe form of bipolar disorder help scientists narrow the search for disease genes

...ding a gene for bipolar disorder is like finding a needle in a haystack, but by focusing our search on families with a distinctive form of the illness we were able to pinpoint a region of the genome where disease genes are likely to be found," said James Potash, M.D., assistant professor of psychiatry at Jo...

News tips: Genetics research builds on legacy of double helix

...ding a gene for bipolar disorder is like finding a needle in a haystack, but by focusing our search on families with a distinctive form of the illness we were able to pinpoint a region of the genome where disease genes are likely to be found," says James Potash, M.D., assistant professor of psychiatry at Jo...

Researchers discover method of predicting drug resistance in hepatitis-B patients

...es. HBV can be spread through sexual transmission; needle sharing; exposure to needlesticks or "sharps" exposures on the job, or from an infected mother to her baby during birth. The highest rate of HBV occurs in 20-49-year-olds, and death from chronic liver disease occurs in 15-25% of chronically infected ...

Automated imaging of brain tissue, high-quality glimpses inside arteries

...l - the biological equivalent to finding a genetic needle in a DNA haystack. The gene chip is highly sensitive and simpler than previous gene sensors. The chip consists of a field of DNA probe strands anchored to a substrate. As samples of genetic material suspended in a fluid are washed past the probe stra...

U-M scientists find cancer's genetic core: 67 genes universally activated in human cancer

...inhibit cancer's development is like looking for a needle in a haystack," Chinnaiyan says. "There are millions of possible combinations. Since the development of microarray technology, more than 200 studies of gene expression signatures in human cancers have been published. They include millions of data poi...

UCLA physicists create nanoscale sensor

... or RNA molecules -- which he equates to finding a needle in a haystack. "Traditional assays use an averaged procedure that detects a minimum amount of molecules, but our method can detect a single one," Zocchi said. "When a target molecule binds to the probe in the sensor, the probe molecule changes shape,...

Radiology's role in gene therapy: Image and deliver

...mputed tomography (CT), are also used to guide the needle into a tumor and precisely deliver the genes to the targeted area.Radiologists are also leading the field in developing strategies for imaging successful delivery and function of desired genes. These include new molecular imaging technology and cont...

Test opens prenatal genetic diagnosis to all

...s and chorionic villus sampling, involve putting a needle into the womb to obtain fluid. This carries with it about a one per cent chance of miscarriage. The risk of miscarriage and the high cost of testing mean that these invasive techniques are offered only to mothers over 35 or those at high risk. And on...

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