Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > People With Asthma Could Breathe Easier Anywhere With Hand-Held Pitt Nano-Sensor That Indicates Oncoming Attacks and Helps Monitor Symptoms

Abstract:
Portable, affordable nanotube sensor detects spikes in nitric oxide before an attack's onset, Pitt researchers report in journal "Nanotechnology"

People With Asthma Could Breathe Easier Anywhere With Hand-Held Pitt Nano-Sensor That Indicates Oncoming Attacks and Helps Monitor Symptoms

PITTSBURGH, PA | Posted on August 22nd, 2007

A sensor developed at the University of Pittsburgh could strip the element of surprise from some asthma attacks by detecting one before its onset. Fitted in a hand-held device, the tiny sensor provides people who have asthma with a simple and affordable means of keeping tabs on their condition by measuring their breath for high levels of a specific gas associated with asthma inflammation.

Researchers led by Alexander Star, a chemistry professor in Pitt's School of Arts and Sciences, created a sensor reactive to even minute amounts of nitric oxide, a gas prevalent in the breath of asthmatics, as they describe in the Aug. 22 online edition of the journal "Nanotechnology." Star also will present his research at the American Chemical Society's 234th National Meeting slated for Aug. 19-23 in Boston. The sensor consists of a carbon nanotube-a rolled, one-atom thick sheet of graphite 100,000 times smaller than a human hair-coated with a polyethylene imine polymer.

Star cased the sensor in a hand-held device that people blow into to determine the nitric oxide content of their breath. The nitric oxide level in the breath of a person with asthma spikes as the airways grow more inflamed. High levels-perhaps two-thirds over normal-may precede an attack by one to three weeks, but possibly earlier depending on the asthma's severity, said Jigme Sethi, a Pitt assistant professor in the School of Medicine's Division of Pulmonary, Allergy, and Critical Care Medicine and a clinician at UPMC Montefiore, who plans to clinically test Star's sensor.

Besides detecting attacks early on, Star's device also provides an easy, portable method for patients and their doctors to regularly monitor their symptoms and tailor treatment accordingly, Sethi said. Physicians use nitric oxide readings to help diagnose and gauge the severity of asthma, but the current method of measuring it requires expensive machines available only in outpatient clinics, Sethi said. Star's invention could allow people with asthma to watch their nitric oxide levels as easily as people with diabetes check their blood sugar with hand-held glucose monitors, Sethi said.

Star specializes in using carbon nanotubes-which were widely introduced to science in the early 1990s-as chemical sensors and in hydrogen fuel cells. In the case of sensors, a nanotube's extreme thinness renders it extremely sensitive to small changes in their chemical environment, which makes for an excellent detector, Star said.

####

About University of Pittsburgh
Founded in 1787 as a small, private school, the Pittsburgh Academy was located in a log cabin near Pittsburgh’s three rivers. In the 220 years since, the University has evolved into an internationally recognized center of learning and research.

For more information, please click here

Contacts:
Morgan Kelly
412-624-4356 (office)
412-897-1400 (cell)


Copyright © University of Pittsburgh

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

Nanotubes/Buckyballs/Fullerenes

$200K Awarded to Develop In Vitro Lung Test for Toxicity of Inhaled Nanomaterials: In Vitro Lung Test Designed to Protect Human Health and Replace Animal Testing September 1st, 2015

Developing Component Scale Composites Using Nanocarbons August 26th, 2015

Southampton scientists find new way to detect ortho-para conversion in water August 25th, 2015

Revolutionary MIT-Developed Nanotechnology Company Showcases at CAMX in Dallas August 20th, 2015

Nanomedicine

Using DNA origami to build nanodevices of the future September 1st, 2015

Efficiency of Nanodrug Containing Antibiotics in Treatment of Infectious Diseases Evaluated August 31st, 2015

Researchers use DNA 'clews' to shuttle CRISPR-Cas9 gene-editing tool into cells August 30th, 2015

Iranian Scientists Use Artemisia Annua Plant to Produce Breast Cancer Drugs August 29th, 2015

Sensors

Successful boron-doping of graphene nanoribbon August 27th, 2015

Nanotechnology that will impact the Security & Defense sectors to be discussed at NanoSD2015 conference August 25th, 2015

High Precision, High Stability XYZ Microscope Stages, with Capacitive Feedback August 18th, 2015

Setting ground rules for nanotechnology research: Two new projects set the stage for nanotechnology research to move into Big Data August 18th, 2015

Discoveries

Hot electrons point the way to perfect light absorption: Physicists study how to achieve perfect absorption of light with the help of rough ultrathin films September 1st, 2015

Using DNA origami to build nanodevices of the future September 1st, 2015

Scientists 'squeeze' light one particle at a time: A team of scientists have measured a bizarre effect in quantum physics, in which individual particles of light are said to have been 'squeezed' -- an achievement which at least one textbook had written off as hopeless September 1st, 2015

Using ultrathin sheets to discover new class of wrapped shapes: UMass Amherst materials researchers describe a new regime of wrapped shapes August 31st, 2015

Announcements

$200K Awarded to Develop In Vitro Lung Test for Toxicity of Inhaled Nanomaterials: In Vitro Lung Test Designed to Protect Human Health and Replace Animal Testing September 1st, 2015

Hot electrons point the way to perfect light absorption: Physicists study how to achieve perfect absorption of light with the help of rough ultrathin films September 1st, 2015

Using DNA origami to build nanodevices of the future September 1st, 2015

Nanotech could rid cattle of ticks, with less collateral damage September 1st, 2015

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







Car Brands
Buy website traffic