HOME >> BIOLOGY >> NEWS
Pollen productionand allergiesmay rise significantly over next 50 years

Boston, MARising carbon dioxide levels associated with global warming could lead to an increase in the incidence of allergies to ragweed and other plants by mid-century, according to a report appearing in the March Annals of Allergy, Asthma, and Immunology by Harvard University researchers. The study found that ragweed grown in an atmosphere with double the current carbon dioxide levels produced 61 percent more pollen than normal. Such a doubling of atmospheric carbon dioxide is expected to occur between 2050 and 2100.

"The side effects of carbon dioxide, as well as its impact on heat budget and the water cycle, have to be taken very seriously," said Paul Epstein, MD, Harvard Medical School instructor in medicine and associate director of the Center for Health and the Global Environment at HMS. "I believe this study can help us understand the true costs of burning fossil fuels."

Ragweed, which flourishes along roadsides and in disturbed habitats throughout North America, produces one of the most common allergens. The researchers grew ragweed plants from seeds in two different enclosed environments. One was maintained at 350 parts carbon dioxide to a million parts air, which is roughly the current level. The other module was maintained at 700 parts carbon dioxide to a million parts air.

The indoor ragweed pollen results61 percent more in the second moduleecho the findings of a recent study conducted outdoors in North Carolina, said Epstein. In that study, excess carbon dioxide was pumped into a pine forest, tripling the number of pine cones and seeds. "It is a very important study because it shows how carbon dioxide affects different plant parts," he said. Taken together, the studies suggest that under carbon dioxide-enriched conditions, plants may boost production of their propagative elements to enhance their reproductive success.

In addition to producing more allergensand possibly more allergy suffererssuch a trend could alter compe
'"/>

Contact: John Lacey
public_affairs@hms.harvard.edu
617-432-0442
Harvard Medical School
20-Mar-2002


Page: 1 2

Related biology news :

1. Pollen record from Chilean lakes indicates global "togetherness" during last ice age
2. Allergy And Asthma-Exaceberating Mites, Molds And Pollens On The Rise Due To El Niño . . . La Niña
3. Rare mutations can significantly increase risk factor for heart disease
4. Cancer health risk significantly underestimated by EPAs ambient model estimates
5. Double mastectomies significantly lower risk of breast cancer in women who are genetically at risk
6. HAART therapy significantly prolongs survival in AIDS patients with central nervous system lymphoma
7. ENBREL rapidly, significantly improved back pain, mobility, function in ankylosing spondylitis
8. Once weekly ENBREL significantly reduced rheumatoid arthritis pain, inflammation & improved function
9. Cognitive abilities increase significantly with time in most prematurely born children
10. Combining key ingredients of vegetarian diet cuts cholesterol significantly, says study
11. Actonel significantly reduced moderate and severe vertebral fractures

Post Your Comments:
(Date:11/4/2014)... Nov. 4, 2014   Neurotechnology , a ... that the latest version of its fingerprint matching ... Ongoing MINEX evaluation organized by NIST. The ... using the INCITS 378 fingerprint standard template format. ... public tenders in the United States ...
(Date:11/3/2014)... study published in this month,s Proceedings of ... of a recently discovered communication molecule of the body,s ... known to limit inflammation and the current study reports ... the ability of the immune system to recognize and ... IL-37,s effect on the immune system now allows us ...
(Date:11/3/2014)... that low birth weight and preterm birth are linked ... adulthood. Findings published in the American College of Rheumatology ... that low birth weight and pre-term babies were not ... as adults. , According to the ACR, 27 ... with clinical OA. Symptoms of OA range from mild ...
Breaking Biology News(10 mins):Neurotechnology Places Second in Ongoing MINEX Ranking for Fingerprint Matching Algorithms 2Neurotechnology Places Second in Ongoing MINEX Ranking for Fingerprint Matching Algorithms 3PNAS: From HIV to cancer, IL-37 regulates immune system 2Preterm, low birth-weight babies may need new hips in adulthood 2
(Date:11/21/2014)... 2014 , Todd Martensen ... Mariano Rodríguez es elegid vicepresidente senior de desarrollo ... está en marcha para comenzar de forma rápida la comercialización ... reciente aprobación en Europa   , ... anunciar los siguientes nombramientos: Todd Martensen ...
(Date:11/21/2014)... 2014 Author Matthew J. Pallamary’s second ... Other Side” published as a tribute to his ... “Fiction: Short Story” category of the 2014 USA ... CEO of USA Book News, said this year’s contest ... including Simon & Schuster, Penguin, John Wiley & Sons, ...
(Date:11/21/2014)... 20, 2014 BlueInGreen, LLC ( ... LLC (Pinnacle), and PCI, Inc., leading suppliers of ... have been selected to provide a new state-of-the-art ... Paul R. Noland Wastewater Treatment. The new ... HyDOZ® gas dissolution technology, Pinnacle Ozone’s industry ...
(Date:11/21/2014)... Nov. 20, 2014 Polaris Group announced ... in its Phase 1 trial of ADI-PEG 20 ... treatment of malignant pleural mesothelioma (MPM) and non-squamous ... clinical trials on ADI-PEG 20, both as monotherapy ... treatment of several other indications, including breast cancer, ...
Breaking Biology Technology:KLOX Technologies anuncia sus nombramientos ejecutivos 2KLOX Technologies anuncia sus nombramientos ejecutivos 3KLOX Technologies anuncia sus nombramientos ejecutivos 4KLOX Technologies anuncia sus nombramientos ejecutivos 5Mystic Ink 's Short Story Collection “A Short Walk to the Other Side” Honoring Ray Bradbury Praised As Award-Winning Finalist In USA Best Book Awards 2Mystic Ink 's Short Story Collection “A Short Walk to the Other Side” Honoring Ray Bradbury Praised As Award-Winning Finalist In USA Best Book Awards 3Mystic Ink 's Short Story Collection “A Short Walk to the Other Side” Honoring Ray Bradbury Praised As Award-Winning Finalist In USA Best Book Awards 4City of Fayetteville Leads Nation with Innovative Ozone Technology 2City of Fayetteville Leads Nation with Innovative Ozone Technology 3City of Fayetteville Leads Nation with Innovative Ozone Technology 4Polaris Group Announces Treatment of First Patient in Phase 1 Study of ADI-PEG 20 plus Pemetrexed and Cisplatin in Malignant Pleural Mesothelioma And Non-Squamous Non-Small Cell Lung Carcinoma 2
Cached News: