Related topics: children , pregnant women , american journal of respiratory and critical care medicine , asthma attack
Asthma
hideAsthma is a chronic inflammation of the lungs in which the airways (bronchi) are reversibly narrowed. Asthma affects 7% of the population, and 300 million worldwide. During attacks (exacerbations), the smooth muscle cells in the bronchi constrict, and the airways become inflamed and swollen. Breathing becomes difficult, and asthma causes 4,000 deaths a year in the U.S. Attacks can be prevented by avoiding triggering factors and by drug treatment. Drugs are used for acute attacks, commonly inhaled β2-agonists. In more serious cases, drugs are used for long-term prevention, starting with inhaled corticosteroids, and then long-acting β2-agonists if necessary. Leukotriene antagonists are less effective than corticosteroids but have no side effects. Monoclonal antibodies such as mepolizumab and omalizumab are sometimes effective. Prognosis is good with treatment.
In contrast to chronic obstructive pulmonary disease and chronic bronchitis, the inflammation of asthma is reversible. In contrast to emphysema, asthma affects the bronchi, not the alveoli.
The National Heart, Lung and Blood Institute defines asthma as a common chronic disorder of the airways characterized by variable and recurring symptoms, airflow obstruction, bronchial hyperresponsiveness (bronchospasm), and an underlying inflammation.
Public attention in the developed world has recently focused on asthma because of its rapidly increasing prevalence, affecting up to one in four urban children.
For more information about Asthma, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
News tagged with asthma
Genetic variant may control lung function and risk of COPD
Dec 17, 2009 |
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Researchers have discovered evidence that suggests a genetic variant may be associated with better preserved lung function among children with asthma and adults who smoke, according to a new study funded by the National Heart, ...
Better education associated with improved asthma
Dec 17, 2009 |
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Individuals with more education suffer less from asthma. Researchers writing in BioMed Central's open access journal Respiratory Research have found that having less than 12 years of formal schooling is associated with w ...
Fibre may keep asthma, diabetes at bay, study finds
Oct 28, 2009 |
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Insoluble dietary fibre, or roughage, not only keeps you regular, say Australian scientists, it also plays a vital role in the immune system, keeping certain diseases at bay.
Quitting smoking can reverse asthma-inducing changes in lungs
Dec 07, 2009 |
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Asthmatic smokers may be able to reverse some of the damage to their lungs that exacerbates asthmatic symptoms just by putting down their cigarettes, according to research out of the University of Groningen in the Netherlands.
Dead Ahead: Similar Early Warning Signals of Change in Climate, Ecosystems, Financial Markets, Human Health
Sep 02, 2009 |
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(PhysOrg.com) -- What do abrupt changes in ocean circulation and Earth's climate, shifts in wildlife populations and ecosystems, the global finance market and its system-wide crashes, and asthma attacks and ...
Treatments for asthma and pre-term labor may increase risk of autism in developing fetus
Dec 02, 2009 |
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Commonly prescribed beta 2 adrenergic agonist drugs for the treatment of asthma in pregnant women as well as pre-term labor may increase the incidence of autism-spectrum disorders, psychiatric pathology, cognitive problems ...
Drug industry embraces new business strategies after tough year
Dec 09, 2009 |
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As they pop the champagne corks to celebrate New Year's Eve, drug industry executives will likely be glad to put 2009 behind them. That's because pharmaceutical companies who make top-selling drugs for heart ...
Potential cancer drug may offer new hope for asthma patients
Dec 09, 2009 |
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A drug being tested to treat cancer could also help patients suffering from asthma, research has suggested.
Study links folic acid supplements to asthma
Nov 04, 2009 |
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A University of Adelaide study may have shed light on the rise in childhood asthma in developed countries like Australia in recent decades.
Against expectations, genetic variation does not alter asthma treatment response
Nov 24, 2009 |
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(PhysOrg.com) -- Studies have suggested that asthma patients with a specific genetic variation might not respond as well to certain treatments as those with a different variation. But a new study in this week's edition of ...
Exposure to both traffic, indoor pollutants puts some kids at higher risk for asthma later
Nov 24, 2009 |
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New research presents strong evidence that the "synergistic" effect of early-life exposure to both outdoor traffic-related pollution and indoor endotoxin causes more harm to developing lungs than one or the other exposure ...
Sweet -- sugared polymer a new weapon against allergies and asthma
Nov 19, 2009 |
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Scientists at Johns Hopkins and their colleagues have developed sugar-coated polymer strands that selectively kill off cells involved in triggering aggressive allergy and asthma attacks. Their advance is a significant step ...
Researcher finds there could be up to 200 cold viruses
Oct 19, 2009 |
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(PhysOrg.com) -- Bad news for the immune system: New research has boosted the number of likely common-cold viruses waiting to make you miserable from the long-accepted 100 to perhaps double that number.
Mother's depression a risk factor in childhood asthma symptoms, study suggests
Medicine & Health / Psychology & Psychiatry
Nov 19, 2009 |
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Maternal depression can worsen asthma symptoms in their children, according to research from Johns Hopkins Children's Center published online in the Journal of Pediatric Psychology.
Wave of the future: Portable ultrasound scanners in the ER can save lives by expediting diagnosis
Aug 18, 2009 |
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All too often, a stethoscope and a doctor's touch are still the primary tools for diagnosing emergency-room patients. UC Irvine physician Chris Fox aims to change that.
