Cromolyn sodium and nedocromil sodium are inhaled agents that are alternatives to inhaled corticosteroids (ICS) in the management of mild persistent asthma in children. Both drugs have been shown to possess anti inflammatory properties through nonsteroidal mechanisms, although the exact mechanisms for their actions remain unclear. (more…)
Roflumilast is an oral, once-daily PDE4 inhibitor with antiinflammatory activity in development for the treatment of asthma. Ro ...
Two long-acting ß 2 -adrenergic agonists (LABAs), salmeterol and formoterol, have been demonstrated to be safe and effective ag ...
Exercise-induced asthma is a feeling of shortness of breath, with the presence of cough, wheezing, and chest tightness after physic ...
Maintenance of asthma control by once-daily inhaled ciclesonide nasal spray in adults with persistent asthma. Ciclesonide is an ...
Up to 85% of asthmatics patients have symptoms of wheezing during or after exercise. Moreover, many patients diagnosed with all ...
Treg cells or regulatory T cells constitute a large population of cellular infiltrate in atopic/allergic inflammation and a dysregulated immune response appears to be an important pathogenetic factor. Cardinal events during allergic inflammation can be classified as activation, organ-selective homing, survival and reactivation, and effector functions of immune system cells. T cells are activated by aeroallergens, food antigens, autoantigens, and bacterial exotoxins superantigens in allergic inflammation. They are under the influence of the skin, lung, or nose-related chemokine network and show organ-selective homing. (more…)
Allergen-specific immunotherapy is highly effective in the treatment of IgE-mediated allergy diseases such as rhinitis, conjunc ...
The induction of immune tolerance and specific immune suppression are essential processes in the control of immune responses. R ...
The intracellular forkhead winged transcription factor Foxp3 (forkhead box P3) appears to be specifically expressed by naturall ...
An emerging concept is that pro-inflammatory signals lead to loss of Regulatory T Cells (Treg) function. Pasare and Medzhitov ( ...
Regulatory T cells Treg (picture above) is the existence of suppressor cells, which limit ongoing immune responses and prevent ...
A variety of proinflammatory cells, mediators, and cytokines orchestrate the development of airway hyperresponsiveness, which results in the episodic airflow obstruction characteristic of asthma. As a consequence, modulation of the underlying disease process with antii-nflammatory agents is firmly established as being the cornerstone of successful management. Inhaled corticosteroids are the most potent antiinflammatory agents available and satisfactorily suppress underlying airway inflammation in most individuals. (more…)
The cysteinyl leukotrienes (LTC 4 , LTD 4 and LTE 4 ) are lipid mediators produced from an arachidonic acid precursor following ...
Antihistamines have been shown to be effective in seasonal allergic rhinitis and chronic idiopathic urticaria. They improve qua ...
In the UK, Europe and the USA, montelukast is licensed for once-daily oral administration in adults and is also available as a ...
Leukotrienes can be found in the airway and urine following both spontaneous exacerbations of asthma and acute exposure to bron ...
Despite optimum drug delivery and good compliance with inhaled corticosteroids, many patients experience symptoms and exacerbat ...
Genome-wide scans have pointed to a number of genomic regions implicated in asthma. This study used an elegant scheme to investigate chromosome 7p, which had been previously identified as containing susceptibility loci for asthma-related phenotypes. Positional cloning of asthma susceptibility genes was undertaken in the Kainuu subpopulation from Finland and two additional population samples from Quebec, Canada. A hierarchical gene mapping strategy was followed by identification of specific genes on the implicated DNA segment of chromosome 7. (more…)
A previous genome-wide screen for mite-sensitive atopic dermatitis asthma in Japanese families indicated linkage to chromosome 5q33 ...
The manifestations of asthma and allergy are the result of both genetic predisposition and environmental factors. This relation ...
Increasing evidence demonstrates that cytokines of Th1 and Th2 cells play important roles in allergic disorders. This study exa ...
Although ADAM33 was the first gene identified by positional cloning to underlie the risk factor of asthma, attempts to replicate th ...
The Tcell Ig domain and mucin domain (TIM) proteins, the genes for which are located on chromosome 5q, have been suggested to b ...
Tumour Necrosis Factor is a pro-inflammatory cytokine implicated in the pathogenesis of asthmatic airway inflammation, hyper-reactivity and remodelling. The primary aim of the trial was to assess whether TNF antagonism, using a soluble Tumour Necrosis Factor receptor (TNFR:Fc etanercept, Enbrel ® ), can attenuate eosinophilic airway inflammation in patients with mild to moderate allergic asthma. (more…)
Tumour necrosis factor alpha (TNF-a) is a major therapeutic target in a range of chronic inflammatory disorders involving neutr ...
Marimastat is a synthetic broad-spectrum matrix metalloproteinase (MMP) inhibitor. This study assessed the anti-inflammatory effect ...
Roflumilast is an oral, once-daily inhibitor of phosphodiesterase type 4 (PDE4) that prevents the breakdown of cyclic adenosine ...
IgE plays an important role in allergic asthma. Reducing IgE in the airway mucosa should reduce airway inflammation. Omalizumab has ...
Vascular Endothelial Growth Factor (VEGF), originally described as a vascular permeability factor generating tissue oedema, has be ...
Allergen avoidance has been recommended in the management of allergic asthma children. Very few studies have assessed the effect of pet removal on pet allergic asthma. The authors examined the effect of pet removal from homes on pulmonary function testing, bronchial
hyper-responsiveness and medication use. This was a prospective, controlled but non-randomized and open study. Subjects included 20 symptomatic patients with newly diagnosed pet allergic asthma who were keeping domestic animals, including hamsters, cats, dogs and ferrets, and were sensitized to these animals. (more…)
Sensitization to pets remains a risk factor for asthma and rhinitis, and can occur in people who have never lived with a pet. S ...
This study was similar to the study of Harrison and colleagues, which looked at doubling the dose of inhaled corticosteroid dur ...
The T-bet (T-box 21) gene (TBX21) encodes a transcription factor, T-box expressed in T cells, which has been implicated in asthma t ...
Do you suspect that you have a pet allergy? If you do, you may be looking for ways to seek relief or you may be looking for tips o ...
Pet dander allergy is possibly the most common form of allergy to pets, although some people are also allergic to pets urine or ...
Diagnosis of food hypersensitivity is a clinical challenge and the only current definitive test is the Double Blind Placebo-Controlled Food Challenges. Although the Double Blind Placebo-Controlled Food Challenges is the current gold standard, it is difficult to perform and is very time-consuming. Hence, researchers are continually evaluating new tests and assessing the value of the available serum tests. (more…)
The food eating challenges materials used at different centers vary considerably. Some centers use freeze-dried foods, some use con ...
Over the last 5 years some studies have suggested that the atopy patch test (APT) may be a useful test in atopic dermatitis childre ...
The diagnostic approach to allergic food reactions comprises three steps. The first step includes the medical allergy history, ...
This population-based cross-sectional study, funded by a UK government agency, aimed to establish the rate of sensitization to food ...
If you suspect that certain foods trigger wheezing or asthma symptoms in your child, your first action should be a consultation ...
Asthma and allergic diseases are common in both children and adults. Their development depends on an interaction between asthma genetic and asthma environmental risk factors. Genetic manipulation in multi factorial diseases such as asthma is not feasible in the foreseeable future. However, theoretically, environmental exposures can be controlled in an attempt to stem the rising prevalence of these diseases (primary prevention). Environmental exposures may also influence the frequency of symptoms and the requirement for medication in those with established disease. (more…)
Two factors thought to influence the risk factor asthma are the promoting effect of sensitization to house dust mites and the preve ...
To prevent the development of allergy, allergen avoidance has to be instituted before sensitization has occurred. The specific ...
Avoidance of any one of the individual risk factors associated with childhood asthma has not been successful in preventing its deve ...
Allergen exposure plays a role in the development of asthma bronchial hyper-responsiveness and in the acute inflammatory response ...
Exposure to allergens plays a role in the development of BHR and in the chronic inflammatory response seen in asthmatic patients. R ...
The effects of exposure to environmental tobacco smoke (ETS) on children have been extensively studied and numerous surveys have consistently reported an association between environmental tobacco smoke exposure and respiratory diseases or respiratory allergies. Strong evidence exists that passive smoking increases the risk of lower respiratory tract illnesses such as bronchitis, wheezy bronchitis and pneumonia in infants and young children. (more…)
This study sought to determine the influence of passive exposure to tobacco smoke during childhood on the results of genetic linkag ...
Avoidance of any one of the individual risk factors associated with childhood asthma has not been successful in preventing its deve ...
Children in the early of their life is prone to allergy because their body immune system is not developed completely. As a matter o ...
CD14 is part of the receptor complex for endotoxin, which is a component of tobacco smoke. The CD14 gene is located on chromoso ...
Asthma is a complex syndrome rather than a single disease entity. Different phenotypes with varying prognosis and determinants have ...
Families frequently do not use their self-injectable adrenaline device, even when their kids is experiencing a potentially life-threatening cardiorespiratory allergic reaction to a food allergen. Fatal food allergy anaphylaxis is rare but well recognized and the early use of intramuscular adrenaline may be life-saving. (more…)
Systemic allergic reactions are a relatively common clinical emergency. In their mildest form, they may just manifest as system ...
Definitions of anaphylaxis vary considerably, impeding the comparison of different clinical studies. Different definitions of a ...
No cure is available for food allergy and food-allergic patients and their families are therefore burdened with the need to con ...
Although most forms of allergy causes uncomfortable situations, an extreme allergic reaction to an allergen can eventually lead to ...
It is quite likely you've known someone with a severe allergy. From peanuts to gluten, such food allergies have grown to be much mo ...