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:6/23/2015)... , June 23, 2015   Valencell, ... the results of a recent study that illustrates ... the wrist during activity. In a study conducted ... compared along with the Apple Watch against a ... heart rate during activity. The study demonstrated that ...
(Date:6/17/2015)... , Deutschland und GERMANTOWN, Maryland , ... ®   Produktlinie mit DNA-Tests verbessert ... N.V. (NASDAQ: QGEN ; Frankfurt Prime Standard: QIA) ... neue STR-Testkits der Produktlinie Investigator ® ... den Markt eingeführt. Die neuen Kits zur Erstellung genetischer ...
(Date:6/16/2015)... QUEBEC CITY , June 16, 2015 /CNW ... announce their partnership centralized around the incorporation of ... mobile point-of-care diagnostic laboratory, the Mo-POD™. This unprecedented ... the BIO International Conference at the ... from June 15 th to ...
Breaking Biology News(10 mins):Valencell Delivers Breakthrough Heart Rate Accuracy on the Wrist 2Valencell Delivers Breakthrough Heart Rate Accuracy on the Wrist 3QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 2QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 3QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 4QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 5QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 6handyem and FlowMetric Diagnostics announce their partnership in the development of Flow Cytometry- Based Solutions in diagnostic capabilities 2handyem and FlowMetric Diagnostics announce their partnership in the development of Flow Cytometry- Based Solutions in diagnostic capabilities 3
... (BRONX, NY) More women are choosing science careers, ... because they abandon their careers due to pessimism about ... decision-making roles on the teams that organize symposia could ... have made dramatic gains in obtaining science degrees over ...
... 6, 2014) Of the 1.9 million species of creatures ... are invertebrates. They have served as model organisms in many ... important role of invertebrates in science including sea urchins for ... Loligo for neurobiology research, the fruit fly Drosophila ...
... , BERLIN and TELTOW, ... RED-n eye tracker by SensoMotoric Instruments, (SMI) brings robust, accurate ... at a mass market price to OEMs and consumer applications. ... The doors open at CES 2014 and SensoMotoric ...
Cached Biology News:Boost careers of female scientists: Make sure women help choose meeting speakers 2Boost careers of female scientists: Make sure women help choose meeting speakers 3New organization brings together top researchers to sequence the genomes of invertebrates 2New organization brings together top researchers to sequence the genomes of invertebrates 3SensoMotoric Instruments Unveils SMI RED-n Consumer Eye Control Technology for Gaming and Computing 2
(Date:6/29/2015)... (PRWEB) , ... June 29, 2015 , ... The ... July 16 and for the fourth year in a row, will bring top technology ... are taking place at the intersection of data and technology. The event is proudly ...
(Date:6/26/2015)...  SeraCare Life Sciences, a leading partner to ... it has signed a Cooperative Research and Development ... part of the National Institutes of Health, to ... assays.  The CRADA will investigate the development of ... biosynthetics spiked into a genomic DNA background and ...
(Date:6/26/2015)... STRASBURG, Va. , June 26, 2015  A ... release two products made with synthetic rhino horn: beer ... in Vietnam . In response to ... oppose the manufacture, marketing and sale of synthetic rhino ... (IRF) and Save the Rhino International ...
(Date:6/26/2015)... ... June 26, 2015 , ... DNA Genotek, a ... OraSure Technologies, Inc. (Nasdaq: OSUR) today announced that it has awarded grants to ... Microbiome Grant Program. The company has awarded its OMNIgene®•GUT fecal/stool collection ...
Breaking Biology Technology:StampedeCon Announces 2015 Agenda 2StampedeCon Announces 2015 Agenda 3SeraCare Life Sciences Signs CRADA with NCI to Advance Cancer Diagnostics 2SeraCare Life Sciences Signs CRADA with NCI to Advance Cancer Diagnostics 3Rhino Experts Oppose Synthetic Rhino Horn as Solution to Poaching Crisis 2DNA Genotek Inc. Announces Recipients of Gut Microbiome Grant Program 2DNA Genotek Inc. Announces Recipients of Gut Microbiome Grant Program 3
... Small Companies In America, UNION CITY, Calif., Oct. ... products company manufacturing point-of-care,blood chemistry analysis systems, announced today ... named "Entrepreneur of,the Year" by Forbes Magazine in its ... ranked eleventh of the "200 Best Small Companies in,America." ...
... Held by GlaxoSmithKline Since June 2006, PHILADELPHIA ... The Thomson Corporation (NYSE: TOC ; TSX: ... worldwide research and,business communities, today announced the availability ... on drugs and therapies. "Who is,Making the Biggest ...
... AURORA, ON, Oct. 15 /PRNewswire-FirstCall/ - Helix BioPharma Corp.,(TSX: ... F. McElroy,has resigned as Chairman and a director of ... had a long involvement with the Company since its,amalgamation ... "On behalf of the Company, I thank him for ...
Cached Biology Technology:Abaxis CEO Clint Severson Named 'Entrepreneur of the Year' by Forbes Magazine 2Thomson Scientific Publishes 'Who Is Making The Biggest Splash?' - A Quarterly Review of Scientific Literature on Drugs and Therapies From April - June 2007 2Thomson Scientific Publishes 'Who Is Making The Biggest Splash?' - A Quarterly Review of Scientific Literature on Drugs and Therapies From April - June 2007 3Helix BioPharma Chairman resigns 2
MAb to Myoglobin Cardiac...
... The SDSaway reagent is a valuable tool ... The presence of SDS in biological ... tightly bound SDS-protein complex, inhibits enzymatic activity ... presents as a contaminant in mass spectrometry ...
Cells are grown to a specified density and induced, when necessary. Protein expression samples are collected at 3 growth points and analyzed by SDS-PAGE/Coomassie....
NovaScreen offers cell biology, cell culture and molecular biology services for companies who lack a cell culture facility....
Biology Products: