Navigation Links
Einstein and Pitt researchers develop new TB test that will dramatically cut diagnosis time
Date:3/19/2009

March 19, 2009 (BRONX, NY) Researchers from the Albert Einstein College of Medicine and The University of Pittsburgh have developed an onsite method to quickly diagnose tuberculosis (TB) and expose the deadly drug-resistant strains that can mingle undetected with treatable TB strains. This study will be published in PLoS ONE, a peer-reviewed online journal from the Public Library of Science.

The researchers engineered bacteriophages, tiny viruses that attack bacteria, with a green fluorescence protein (GFP) implanted in their genome. Bacteriophages spread by injecting their DNA into bacterial cells. In this case, the GFP gene accompanies the DNA of the phage into the Mycobacterium tuberculosis cell, the bacterium that causes TB, causing the cell to glow. A clinician could detect the glow with equipment available at many clinics.

"The development of these reporter flurophages allows us to bypass the existing method of diagnosing TB, which requires cultivating slow-growing bacteria in a biosafety level 3 environment, a time-consuming and costly process," says William R. Jacobs, Jr., Ph.D., one of the authors of the study. "By infecting live M. tuberculosis cells with a flurophage, a quick and highly sensitive visual reading can be done. We are optimistic that we can move the diagnostic process from several weeks to several days or even hours, which could have a significant impact on treatment."

"A report from South Africa showed that the extensively drug-resistant TB strains can kill within 16 days, on average," says Graham Hatfull, Ph.D., the lead author and close collaborator of Dr. Jacobs. "In rural Africa, it takes too long to collect samples, send them off, do the test, and have the data sent back. Clinicians need rapid, relatively cheap, and simple methods for detecting TB and drug-resistant strains in the local clinic. This test provides a quick diagnosis so the patient can be isolated and treated."

Besides quick diagnosis, the test also could be used to distinguish treatable TB strains from those that are drug resistant (DR-TB) and extensively drug resistant (XDR-TB), which normally takes months. Researchers treated M. tuberculosis with antibiotics at the same time the bacteriophages were introduced; the TB strains that were sensitive to antibiotics died, but the drug-resistant cells survived and continued to glow.

The study, "Fluoromycobacteriophages for Rapid, Specific, and Sensitive Antibiotic Susceptibility Testing of Mycobacterium tuberculosis," will appear in the March 19, 2009 edition of PLoS ONE.

The group's research was funded as part of a major new research initiative from Howard Hughes Medical Institute (HHMI). HHMI announced on March 19 that it will partner with University of KwaZulu-Natal in South Africa to establish an international research center focused on the TB and HIV coepidemics, called KwaZulu-Natal Research Institute for TB-HIV (K-RITH). Dr. Jacobs will direct research into developing rapid and effective TB tests, one of the new institute's primary objectives. His work with Hatfull and postdoctoral fellow Mariana Piuri on the flurophage study was related to that effort.


'/>"/>

Contact: Deirdre Branley
dbranley@aecom.yu.edu
718-430-2923
Albert Einstein College of Medicine
Source:Eurekalert

Related biology news :

1. Empire State Stem Cell Board awards $12.7 million to Albert Einstein College of Medicine
2. Einstein scientists receive $10 million NIH grant
3. Einstein researchers develop technique to count messages made by single genes
4. Einstein researchers develop a new way to study how breast cancer spreads
5. In scientific first, Einstein researchers correct decline in organ function associated with old age
6. Feinstein researchers develop new genetic method and identify novel genes for schizophrenia
7. Einstein researchers receive grants totaling $700,000 for innovative breast cancer research
8. Einstein researcher receives NIH grant to explore epigenetic regulation of the human genome
9. University researchers to develop coatings that kill superbugs
10. K-State researchers work with university in Ghana to create biofuels from native tree seeds
11. Heinz Maier-Leibnitz Prizes 2009: Six young researchers recognized for outstanding achievements
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/18/2017)... SUNNYVALE, Calif. , April 18, 2017  Socionext Inc., a ... prototype of a media edge server, the M820, which features the ... face recognition software provided by Tera Probe, Inc., will be showcased ... and at the NAB show at the Las Vegas ... ...
(Date:4/11/2017)... Research and Markets has announced the addition of the ... ... grow at a CAGR of 30.37% during the period 2017-2021. ... prepared based on an in-depth market analysis with inputs from industry ... over the coming years. The report also includes a discussion of ...
(Date:4/5/2017)... , April 5, 2017 Today HYPR ... that the server component of the HYPR platform is ... providing the end-to-end security architecture that empowers biometric authentication ... HYPR has already secured over 15 million users across ... manufacturers of connected home product suites and physical access ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... October 12, 2017 , ... ... of a complex biological network, a depiction of a system of linkages and ... Dmitry Korkin, PhD, associate professor of computer science at Worcester Polytechnic Institute (WPI) ...
(Date:10/12/2017)... ... October 12, 2017 , ... ... with the addition of its newest module, US Hemostats & Sealants. , SmartTRAK’s ... hemostats, absorbable hemostats, fibrin sealants, synthetic sealants and biologic sealants used in surgical ...
(Date:10/11/2017)... ... October 11, 2017 , ... ... in its endogenous context, enabling overexpression experiments and avoiding the use of exogenous ... RNA guides is transformative for performing systematic gain-of-function studies. , This complement ...
(Date:10/11/2017)...  VMS BioMarketing, a leading provider of patient support solutions, ... Educator (CNE) network, which will launch this week. The VMS ... care professionals to enhance the patient care experience by delivering ... health care professionals to help women who have been diagnosed ... ...
Breaking Biology Technology: