Featured Research

from universities, journals, and other organizations

Compound may help in fight against antibiotic-resistant superbugs

Date:
February 13, 2012
Source:
North Carolina State University
Summary:
Chemists have created a compound that makes existing antibiotics 16 times more effective against recently discovered antibiotic-resistant "superbugs."

North Carolina State University chemists have created a compound that makes existing antibiotics 16 times more effective against recently discovered antibiotic-resistant "superbugs."

Related Articles


These so-called superbugs are actually bacterial strains that produce an enzyme known as New Delhi metallo-β-lactamase (NDM-1). Bacteria that produce this enzyme are practically impervious to antibiotics because NDM-1renders certain antibiotics unable to bind with their bacterial targets. Since NDM-1 is found in Gram-negative bacteria like K. pneumoniae, which causes pneumonia, urinary tract, and other common hospital-acquired infections, it is of particular concern.

"To begin with, there are fewer antibiotic options for treating infections caused by Gram-negative bacteria than for those caused by Gram-positive bacteria," says Dr. Roberta Worthington, NC State research assistant professor of chemistry. "Gram-negative bacteria with the NDM-1 enzyme effectively neutralize the few weapons we have in our arsenal, making them especially difficult, if not impossible, to treat with existing antibiotic therapy."

Previously, NC State chemist Dr. Christian Melander had found that a compound derived from a class of molecules known as 2-aminoimidazoles "recharged" existing antibiotics, making them effective against Gram-positive antibiotic-resistant bacteria like the Staphylococcus strain MRSA. So Melander, Worthington and graduate students Cynthia Bunders and Catherine Reed set to work on a variety of the compound that might prove similarly effective against their Gram-negative brethren.

In a paper published in ACS Medicinal Chemistry Letters, Worthington and Melander describe a compound that, when used in conjunction with the antibiotic imipenem, increased the antibiotic's effectiveness against the antibiotic-resistant K. pneumoniae 16-fold. The researchers believe that these early results are very promising for future treatments.

"We've demonstrated that we have the ability to take out the scariest superbug out there," Melander says. "Hopefully further research will allow us to make the compound even more effective, and make these infections little more than a nuisance."

The research was funded by the National Institutes of Health and the Jimmy V Foundation. The Department of Chemistry is part of NC State's College of Physical and Mathematical Sciences.


Story Source:

The above story is based on materials provided by North Carolina State University. Note: Materials may be edited for content and length.


Journal Reference:

  1. Roberta J. Worthington, Cynthia A. Bunders, Catherine S. Reed, Christian Melander. Small Molecule Suppression of Carbapenem Resistance in NDM-1 ProducingKlebsiella pneumoniae. ACS Medicinal Chemistry Letters, 2012; 120209131248001 DOI: 10.1021/ml200290p

Cite This Page:

North Carolina State University. "Compound may help in fight against antibiotic-resistant superbugs." ScienceDaily. ScienceDaily, 13 February 2012. <www.sciencedaily.com/releases/2012/02/120213154106.htm>.
North Carolina State University. (2012, February 13). Compound may help in fight against antibiotic-resistant superbugs. ScienceDaily. Retrieved April 19, 2015 from www.sciencedaily.com/releases/2012/02/120213154106.htm
North Carolina State University. "Compound may help in fight against antibiotic-resistant superbugs." ScienceDaily. www.sciencedaily.com/releases/2012/02/120213154106.htm (accessed April 19, 2015).

Share This


More From ScienceDaily



More Health & Medicine News

Sunday, April 19, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Our Love Of Puppy Dog Eyes Explained By Science

Our Love Of Puppy Dog Eyes Explained By Science

Newsy (Apr. 17, 2015) Researchers found a spike in oxytocin occurs in both humans and dogs when they gaze into each other&apos;s eyes. Video provided by Newsy
Powered by NewsLook.com
Dr. Oz Under Fire For 'Quack Treatments' Yet Again

Dr. Oz Under Fire For 'Quack Treatments' Yet Again

Newsy (Apr. 17, 2015) Ten doctors signed a letter urging Columbia University to drop Dr. Oz as vice chair of its department of surgery, saying he plugs "quack" treatments. Video provided by Newsy
Powered by NewsLook.com
Scientists Find Link Between Gestational Diabetes And Autism

Scientists Find Link Between Gestational Diabetes And Autism

Newsy (Apr. 17, 2015) Researchers who analyzed data from over 300,000 kids and their mothers say they&apos;ve found a link between gestational diabetes and autism. Video provided by Newsy
Powered by NewsLook.com
Video Messages Help Reassure Dementia Patients

Video Messages Help Reassure Dementia Patients

AP (Apr. 17, 2015) Family members are prerecording messages as part of a unique pilot program at the Hebrew Home in New York. The videos are trying to help victims of Alzheimer&apos;s disease and other forms of dementia break through the morning fog of forgetfulness. (April 17) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins