Navigation Links
Global Warming Kicks Up Allergy Storm
Date:3/1/2010

Longer pollen seasons, more allergy sufferers are the result, study finds,,

MONDAY, March 1 (HealthDay News) -- The rise in temperatures associated with climate change might have an unexpected consequence: more allergies among more people.

New research from Italy suggests that higher temperatures are lengthening the pollen season for some plants and trees, increasing the pollen load they produce and causing a rise in the number of people who are developing allergies to certain pollens.

"The increase of global radiation determines an advance [of pollen season] and an increased period of exposure to the pollens," said study author Dr. Renato Ariano, director of the allergy service at Bordighera Hospital in Italy. Ariano said the increased exposure to pollen can cause more people who are susceptible to allergy to actually develop pollen allergies.

Ariano was scheduled to present the findings Monday in New Orleans at the annual meeting of the American Academy of Allergy, Asthma & Immunology.

For nearly 30 years, Ariano and his colleagues have been recording pollen counts, the length of pollen seasons and the prevalence of people sensitized to five major pollens in the Bordighera region of Italy -- birch, cypress, olive, grass and parietaria, a common plant in that region.

The Bordighera region is in western Liguria, on the Mediterranean Sea at the border of Italy and France, said study author Dr. Giovanni Passalacqua, an assistant professor of allergy and respiratory diseases at Genoa University in Italy. Bordighera "has a very mild Mediterranean climate and is surrounded by a rural landscape where flowers and olives are cultivated," he said.

Between 1981 and 2007, the researchers noted an earlier start for pollen season. In the case of parietaria, the pollen season began about 80 days sooner at the end of the study period than it did at the beginning. For olive trees, the pollen season began about 30 days sooner, Passalacqua said.

At the same time, the researchers also tested area residents, using skin prick testing to assess the levels of sensitization to the five pollens. If someone reacts on a skin prick test, they're said to be sensitized to that substance. However, being sensitized to a substance in an allergy test doesn't always translate to noticeable symptoms, though there's often a correlation between the two.

"We observed a constant increase of the percentage of subjects sensitized to olive, parietaria and cypress, whereas the percentage of subjects sensitized to dust mites remained unchanged over 27 years," Passalacqua said.

Estelle Levetin, a professor of biology who chairs the biological sciences faculty at the University of Tulsa in Oklahoma said that "the data already show that pollen seasons could be longer and pollen levels could be higher, and although this needs more study, it may be that the pollen grain is becoming more allergenic when plants are grown with higher carbon dioxide levels."

This means that people with allergies might need to start taking allergy medications earlier and continue them for a longer period of time, Levetin said. Anyone who feels that their allergies are starting earlier should discuss this with their doctor, she said.

More information

The American Academy of Allergy, Asthma and Immunology offers a city by city look at pollen levels.



SOURCES: Renato Ariano, M.D., director, allergy service, Bordighera Hospital, Italy; Giovanni Passalacqua, M.D., assistant professor, allergy and respiratory diseases, Genoa University, Italy; Estelle Levetin, Ph.D., professor, biology, and chairwoman, Faculty of Biological Science, University of Tulsa, Okla.; March 1, 2010, presentation, American Academy of Allergy, Asthma & Immunology annual meeting, New Orleans


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. Fifth Anniversary of Global Tobacco Control Treaty Presents Opportunity For U.S. Ratification and Leadership
2. All Global Launches Physician Panels in Russia and Poland
3. GSA FASA Program Kicks-Off for eGlobalTech
4. Global Hospitals and Healthcare Suppliers Focus on Cutting Costs and Improving Quality at 2010 GHX Supply Chain Summit
5. BCS Global Launches PSVN (Public Switched Video Network), an Initiative to Provide a Framework for Inter-Connecting Business to Business Video Networks
6. Thomas Pharmaceuticals, Ltd to Merge with Global Medical Equipment of AZ
7. Global Medical Staffing Extends Locum Tenens Physician Placement to the Middle East
8. Global Nutrition Firm Takes Dose of SonicWALL to Boost Network Health
9. GenomeQuest Hosts Seminar Focused On Web-based Searching for Patent Information Across Global Sequence Databases
10. Language Service Leader Expands to Meet Booming, Global Industry Demand.
11. The Global Leaders' Inaugural Meeting a Resounding Success
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/13/2016)... Montreal, Canada (PRWEB) , ... February 13, 2016 , ... ... best foot forward. They’ll groom themselves to perfection, go out of their way to ... their date – just take a look at any online dating profile. , ...
(Date:2/12/2016)... ... February 12, 2016 , ... According to an article published ... for a significant portion of hernia repairs throughout the United States. Commenting on this ... Center notes that this trend has not only been expected, but it seems to ...
(Date:2/12/2016)... ... February 12, 2016 , ... The law firm of Morrow, Morrow, Ryan & ... purpose of these scholarships is to encourage applicants to pursue a degree in their ... these two parishes. , “We have available jobs in St. Landry and Evangeline ...
(Date:2/12/2016)... , ... February 12, 2016 , ... ... devoted exclusively to funding innovative lymphoma research and serving the lymphoma community through ... over 250 members of South Florida’s philanthropic community at its 10th anniversary Fashion ...
(Date:2/12/2016)... Falls Church, VA (PRWEB) , ... February 12, ... ... in Store?, Feb. 29, 2016 — 1:30 p.m. – 3:00 p.m. EST, ... burner issue in the life cycle of pharmaceutical products, garnering increased attention from ...
Breaking Medicine News(10 mins):
(Date:2/11/2016)... 11, 2016 The primary goal of this ... patterns on the usage of liquid biopsy. Key information ... - Timeframe of liquid biopsy adoption amidst future ... Evs—by organization type - Sample inflow to conduct liquid ... stool, serum, and so on. - Correlation analysis of ...
(Date:2/11/2016)... OAKLAND, Calif. , Feb. 11, 2016  Walgreens ... stores across 39 states and Washington, D.C. ... in a move that was commended by shareholder advocacy organization ... President at As You Sow. "Many people hold on to ... options, which can have tragic consequences." --> ...
(Date:2/11/2016)...  MiMedx Group, Inc. (NASDAQ: MDXG ), the ... other birth tissues, human skin and bone, and patent-protected ... products and therapies, announced today that it will present ... in New York , NY.  Parker ... Senken , Chief Financial Officer and Chris Cashman ...
Breaking Medicine Technology: