Navigation Links
A better test to detect DNA for diagnosing diease, investigating crimes
Date:8/26/2009

Researchers in Singapore are reporting development of a new electronic sensor that shows promise as a faster, less expensive, and more practical alternative than tests now used to detect DNA. Such tests are done for criminal investigation, disease diagnosis, and other purposes. The new lab-on-a-chip test could lead to wider, more convenient use of DNA testing, the researchers say. Their study is scheduled for the Sept. 2 issue of the Journal of the American Chemical Society, a weekly publication.

In the new study, Zhiqiang Gao and colleagues note that current methods for detecting DNA involve the used of the polymerase chain reaction (PCR). This technique "amplifies" or makes multiple copies of trace amounts of DNA, much as a photocopier produces multiple copies of documents, in order to detect the genetic material more easily. The amplification step is one reason why tests involving PCR can be too expensive, cumbersome, and imprecise for wider use.

The researchers describe development of a so-called "nanogap sensor" that appears to overcome those obstacles. The process uses a pair of micro-sized metal electrodes separated by a nanogap, 1/50,000 the width of a human hair, in combination with special chemical probes, to capture tiny segments of DNA. The newly formed "circuit" then translates the presence of DNA into an electrical signal so that it can be measured by a computer. In laboratory tests, the sensor showed "excellent" sensitivity at detecting trace amounts of human DNA and may eliminate the need for DNA amplification altogether, the researchers say.


'/>"/>

Contact: Michael Woods
m_woods@acs.org
202-872-6293
American Chemical Society
Source:Eurekalert  

Page: 1

Related medicine news :

1. Comparative Effectiveness Research Study in Mayo Clinic Proceedings Demonstrated Asthma Patients Had Better Overall Results with Oral Controllers than Inhaled Products
2. The Berry Truth: Cystex Know Your Bladder Better Video Explains Why Cranberries Are Great for UTI Prevention, But Not for Treatment
3. Why Weight for a Better Body?
4. New treatments offer better survival and fresh challenges in colorectal cancer
5. Better Pap Smear Follow-Up Needed Among Lower-Income Women
6. Nonprofit nursing homes provide better care, major study finds
7. New Omega-3 Blood Test: A Better Predictor of Coronary Heart Disease Than Cholesterol
8. Endoscopy within 24 hours shows better outcomes in elderly with peptic ulcer bleeding
9. Surprise! Better Sleep with Gene-Eden(R), an Antiviral Supplement
10. Limb-sparing surgery may not provide better quality of life than amputation for bone cancer patients
11. Not-For-Profit Nursing Homes Fare Better in Studies
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
A better test to detect DNA for diagnosing diease, investigating crimes
(Date:3/24/2017)... ... 24, 2017 , ... “End Time GPS”: a dauntless and enlightened study ... Time GPS” is the creation of published author, Wesley Gerboth, a World War II ... and space-vehicle projects. Now, at age ninety-one, he shares the Wisdom God bestowed upon ...
(Date:3/24/2017)... ... , ... “The Communion of Saints: A Pastor’s Potpourri of ... across the United States. “The Communion of Saints” is the creation of ... congregations in seven states throughout his long career of devotion to the church. ...
(Date:3/23/2017)... ... March 23, 2017 , ... In 2016 the World ... that there could be four million Zika-related cases in the Americas within the next ... of US cases reported per year skyrocketing to an estimated 329,000. Yet, Zika, Lyme ...
(Date:3/23/2017)... , ... March 23, 2017 , ... The physicians of ... in the greater Houston Area. The new location is located at 2255 E. Mossy ... in Springwoods Village. This newest location will provide patients living in the north Houston ...
(Date:3/23/2017)... New Braunfels, TX (PRWEB) , ... March 23, 2017 , ... ... a new clinic, located at 960 Gruene Road in Building 2. The clinic is ... co-owner Dr. Andrew Bennett, PT, says opening the company’s second New Braunfels location brings ...
Breaking Medicine News(10 mins):
(Date:3/24/2017)... Research and Markets has announced the addition of the "Dental Implants ... ... for Dental Implants in US$ Million. The report provides separate comprehensive analytics ... , Europe , Asia-Pacific , ... Annual estimates and forecasts are provided for the period 2015 through 2022. ...
(Date:3/24/2017)... , March 24, 2017 FinancialBuzz.com News ... ... publisher of cannabis market research, the legal cannabis market is ... through 2021, despite conflicting signals from the current presidential administration. ... that the two biggest drivers of growth in this industry ...
(Date:3/24/2017)... Research and Markets has announced the addition of the "Deep ... to their offering. ... The Deep Learning: Drug Discovery and Diagnostics Market, 2017-2035 report examines ... deep learning solutions within the healthcare domain. Primarily driven by the ... solution to generate relevant insights from medical data. ...
Breaking Medicine Technology: