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:8/20/2017)... ... August 20, 2017 , ... HIPAA Solutions, ... System has assisted multiple clients in successfully passing audits such as Office ... Level 2 (AICPA SOC Level 2), and State Data Use Agreement Audits. ...
(Date:8/19/2017)... ... 18, 2017 , ... Paragon and IOTA ... help the cannabis industry move towards greater legitimacy. By incorporating IOTA’s unique approach ... with lower fees. Paragon will build a fully verifiable database to track prescriptions, ...
(Date:8/19/2017)... ... August 19, 2017 , ... Yesterday, the President of the United ... are two sides. There are not two sides to hatred, bigotry, discrimination, and a ... prejudice, and the NPEIV stands against all forms of such hatred and discrimination in ...
(Date:8/18/2017)... ... August 18, 2017 , ... More than 20,000 pairs of ... Congo (DRC) thanks to an ambitious venture that conjoined the passions of an NBA ... support of the Liberty community. These shoes will save lives from the rampant infections ...
(Date:8/18/2017)... ... August 18, 2017 , ... Mediaplanet today announces ... active, healthy lifestyles and highlighting the importance of proactive eye and ear health. ... shares the latest innovations in hearing aid technology. , In this issue, ...
Breaking Medicine News(10 mins):
(Date:8/17/2017)... 17, 2017 DarioHealth Corp. (NASDAQ: DRIO), ... health and big data solutions, announced today that ... and non-U.S. investors for the sale of shares ... the Company,s newly designated Series B Convertible Preferred ... expects to conduct a closing with respect to ...
(Date:8/15/2017)... 15, 2017 AccuGenomics, Inc., a diagnostic company ... announced that the company has provided an AccuKit to ... Carolina at Chapel Hill and to Qura Therapeutics for ... and quantify HIV reservoir and viral expression in human ... HIV Cure Center is a joint initiative between the ...
(Date:8/8/2017)... -- BioLineRx Ltd. (NASDAQ/TASE: BLRX), a clinical-stage biopharmaceutical company focused ... for the second quarter ended June 30, 2017. ... and to date: ... Company,s lead project, BL-8040: Announced plans ... novel stem cell mobilization treatment for autologous bone-marrow transplantation ...
Breaking Medicine Technology: