Navigation Links
In asthma, it's not just what you smell, but what you think you smell
Date:7/22/2014

ght subjects were told that the odor had potential therapeutic properties, while nine were told that it potentially could cause mild respiratory problems.

During odor presentation, the subjects rated the odor's sensory properties, including intensity, irritancy, and annoyance. Measures of lung function and airway inflammation were collected before and immediately after exposure and again at two hours and 24 hours post-exposure.

Subjects' beliefs about the odor, specifically whether it was potentially harmful (asthma-triggering) or therapeutic, influenced both their psychological and physiological responses to odor exposure.

Individuals who were told that the odor was potentially harmful rated it as more irritating and annoying as compared to those who thought it might be therapeutic.

In addition, airway inflammation increased immediately following odor exposure in subjects who believed the odor might be harmful and remained elevated 24 hours later.

"Introducing a negative bias led to a rapid change in airway inflammation," said senior author Pamela Dalton, PhD, a cognitive psychologist at Monell. "What really surprised us was that this response lasted for over 24 hours. The increased inflammation during this period likely makes asthmatics more sensitive to other triggers."

There was no increase of inflammation when the odor was characterized as therapeutic, even in individuals who described themselves as sensitive to perfumes and other odors.

The findings suggest that some fragrance effects on asthma symptoms may be related to the expectation of harm as opposed to chemical properties of the odor.

"It's not just what you smell, but also what you think you smell," said Jan.

Looking forward, the researchers want to identify the biological mechanisms that connect expectations to airway inflammation. They also intend to explore whether a reverse phenomenon also exists. Dalton asks, "Ca
'/>"/>

Contact: Leslie Stein
stein@monell.org
267-519-4707
Monell Chemical Senses Center
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Rethinking the reef
2. Stanford researchers rethink natural habitat for wildlife
3. How coughs and sneezes float farther than you think
4. Thinking it through: Scientists seek to unlock mysteries of the brain
5. Climate engineering -- what do the public think?
6. Hoyos Labs, a Digital Infrastructure Security Company, Launches; Rethinks How We Authenticate and Secure Identity
7. Fund launched to seed new thinking in sustaining the future of health
8. Researchers call for rethinking efforts to prevent interplanetary contamination
9. Major rethink needed if chemical industry is to meet greenhouse gas targets
10. A way of thinking may enable battle but prevent war crimes
11. Study prompts rethink of how ovaries develop
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/24/2015)... 2015 Research and Markets ( ... "Global 2D Gesture Recognition Market 2015-2019" ... analysts forecast the Global 2D Gesture Recognition market ... the period 2014-2019 The increased demand ... one of the major trends in the market. ...
(Date:2/19/2015)... .19, 2015 Research and Markets ... the "Military Electro-Optical / Infrared Systems Market ... Platform - Forecast to 2020" report to ... systems market is expected to reach $16.35 billion ... This report segments the military electro-optical/infrared ...
(Date:2/13/2015)... , Feb. 13, 2015 ACT ... company that aims to transform cancer genomic information ... that the company has raised US$ 8 million in ... Based in Taipei, Taiwan , ... ACTDrug™, ACTOnco™. With the aim to implement next ...
Breaking Biology News(10 mins):Global 2D Gesture Recognition Market 2015-2019 with Cognitec Systems, CogniVue, eyeSight Mobile Technologies & PointGrab Dominating 2Military Electro-Optical / Infrared Systems (Image Intensification, Laser, Infrared) Market - Forecast to 2020: Featuring Profiles of the Market Leaders on this $16 Billion market 2Military Electro-Optical / Infrared Systems (Image Intensification, Laser, Infrared) Market - Forecast to 2020: Featuring Profiles of the Market Leaders on this $16 Billion market 3ACT Genomics Raises $8 Million in its First Private Funding Round 2
... interaction of a group of proteins in the brain responsible ... target that could increase cell survival. The discovery, made ... in the EMBO journal with additional comment in ... and other brain diseases. The research builds on earlier ...
... An international team of scientists using a new ... inside a living frog embryo in greater detail than ... advance biological research and the search for new treatments ... Karlsruher Institut fr Technologie in Germany, in collaboration with ...
... the stability of today,s largest ice sheets in Greenland and Antarctica. ... example when Earth was going through a warm period ... to ice sheet collapse at that time. This assumption has led ... collapsed in the past, then they may do just the same ...
Cached Biology News:SUMO wrestling cells reveal new protective mechanism target for stroke 2New X-ray method shows how frog embryos could help thwart disease 2World's biggest ice sheets likely more stable than previously believed 2
(Date:3/2/2015)... (PRWEB) March 02, 2015 ... newly formed alliance with Shenzhen HANK Bioengineering Co., ... Ph.D. The alliance will establish a stem cells ... Province, China in September 2015. , Shenzhen HANK ... Zhang, an award-winning scientist, microbiologist and virologist, to ...
(Date:2/27/2015)... GERMANTOWN, Md. and SUMMERLAND, British ... Corporation (NYSE: XON ), a leader ... an agreement to acquire  Okanagan Specialty Fruits (OSF), ... apple , the world,s first non-browning apple. Through ... trees yielding fruit that is more appetizing and convenient ...
(Date:2/27/2015)... Md. (PRWEB) February 27, 2015 ... Chromatography system (Nexera UC) can sequentially analyze up ... separation combined with high-sensitivity detection of targets by ... is designed to fulfill the measurement requirements of ... in food products, drug delivery and search for ...
(Date:2/27/2015)... Feb. 27, 2015  Steep Hill, the industry leader ... internationally, intends to open a full service medical cannabis ... , bringing advanced scientific tools and methodology to ... Steep Hill is currently the only laboratory licensed by ... and contaminant testing in order to meet the recently ...
Breaking Biology Technology:Global Stem Cells Group Announces Alliance with HANK Bioengineering Co., Ltd. in Shenzhen, China 2Global Stem Cells Group Announces Alliance with HANK Bioengineering Co., Ltd. in Shenzhen, China 3Intrexon to Acquire Okanagan Specialty Fruits 2Intrexon to Acquire Okanagan Specialty Fruits 3Intrexon to Acquire Okanagan Specialty Fruits 4Shimadzu Corporation Launches Nexera UC - The World’s Foremost Unified Chromatography System 2Shimadzu Corporation Launches Nexera UC - The World’s Foremost Unified Chromatography System 3Steep Hill First to Receive Provisional Approval to Establish Laboratory Services for Cannabis Testing in State of New Mexico 2
... research on an ongoing basis is the most effective ... many companies, the benefits of conducting marketing research and ... be at odds: , ,Marketing research can be ... , ,The traditional solution to this quagmire is to ...
... traveled to an event in Madison, Wis. that was organized ... was designed to bring together three geographic locations of high-technology ... ePrairies third eXtreme Networking event (but the first ... a methodology for dating where men and women come together ...
... market has been steadily advancing. People are starting to feel ... in spite of the gnawing reality that far too many ... will never return. Some US pundits are saying in four ... big trouble, with huge raising deficits and the ever-increasing trade ...
Cached Biology Technology:Talking Bout My Generation: The Evolution of Online Marketing Research 2Talking Bout My Generation: The Evolution of Online Marketing Research 3Mike Rosen Reviews - eXtreme Networking in Madison 2Mike Rosen Reviews - eXtreme Networking in Madison 3The Next Economy - Market Collapses Drive Long-Term Growth 2
5(S)-HETE-d8 is used as an internal standard for the quantification of 5(S)-HETE by stable isotope dilution mass spectrometry....
Full-length cDNA clone CS0DJ013YG01 of T cells (Jurkat cell line) of Homo sapiens (human). [Source:Uniprot/SPTREMBL;Acc:Q86SZ3] Antigen: Recombinant Protein Epitope Signature Tag (PrEST)....
...
...
Biology Products: