Long-Acting Beta Agonists: Salmeterol and Formeterol

Salmeterol and Formeterol
Two long-acting ß 2 -adrenergic agonists (LABAs), salmeterol and formoterol, have been demonstrated to be safe and effective agents in children, both in terms of bronchodilation and prevention of exercise-induced bronchospasm. Their onsets of action differ, with formoterol having an onset similar to albuterol (3 minutes), while salmeterol has a slower onset of action (10–20 minutes). Following a single-dose administration, both agents demonstrate durations of action up to 12 hours. Following regular twice-daily administration, bronchodilation remains effective; however, a level of tolerance (or tachyphylaxis) (more…)

Allergic Rhinitis and Asthma: Genetic Linkage Regions

allergic rhinitis asthma
Allergic rhinitis and asthma are common comorbidities. Like asthma, the presence of a genetic component in allergic rhinitis has been well established. To identify genetic linkage regions unique to allergic rhinitis, as well as those shared by allergic rhinitis and asthma, a genome screen study was conducted. A total of 295 families in the French Epidemiological Study on the Genetics and Environment of Asthma (EGEA) containing 1317 subjects were genotyped for 396 microsatellite markers. The families included had two siblings with DNA available and at least one asthmatic subject. Three definitions of allergic rhinitis were used, two binary and one categorical. To investigate linkages specific to allergic rhinitis (without asthma), linkage analyses were also conducted in 185 families with at most one asthmatic sib. (more…)

Anti IgE Therapy Tolerability with Omalizumab Therapy in Allergic Asthma Patients

Anti IgE Therapy
Anti-IgE therapy could be particularly beneficial for patients with concomitant asthma and rhinitis as it targets a common factor in the two diseases. Omalizumab is significantly more efficacious than placebo in preventing asthma exacerbations and in improving disease-related quality of life scores when added to standard asthma and rhinitis therapies. (more…)

Allergy Immunotherapy with Depigmented Glutaraldehyde-Polymerized Extracts

Allergy Immunotherapy
Allergic rhinitis is a very common problem associated with poor quality of life, reductions in social and work activities and poor interpersonal relationships. The main goal of the management of allergic rhinitis is to improve the quality of life. Immunotherapy is a specific therapy for allergic rhinitis and several reports have documented the safety and efficacy of this treatment . Safety has been a key issue in immunotherapy and various modalities are being investigated to make allergy immunotherapy more tolerable and safe to administer. (more…)

Tumour Necrosis Factor Alpha in Symptomatic Corticosteroid-Dependent Asthma

Tumour Necrosis Factor Alpha
Tumour necrosis factor alpha (TNF-a) is a major therapeutic target in a range of chronic inflammatory disorders involving neutrophils and its excess production is characterized by a Th1-type immune response. Asthma is regarded as a Th2-type disorder when associated with atopy, (more…)

Atopy Patch Test Accuracy in Diagnosing Hypersensitivity to Cow’s Milk & Hen’s Egg

Over the last 5 years some studies have suggested that the atopy patch test (APT) may be a useful test in atopic dermatitis children who have suspected food hypersensitivity and may even obviate the need for oral challenges. An alternative test to oral allergy challenges with high sensitivity and specificity would be helpful in the diagnosis of food hypersensitivity. (more…)

Food Hypersensitivity, Adverse Reactions to Foods & Food Avoidance Among Teenagers

This population-based cross-sectional study, funded by a UK government agency, aimed to establish the rate of sensitization to food allergens, reported food hypersensitivity, food avoidance and objectively assessed food hypersensitivity in 11- and 15-year-olds living on the Isle of Wight, UK. The researchers approached the teenagers via their schools, and a questionnaire completed by the parents and children formed the basis of capturing data to determine the prevalence of current reported food hypersensitivity and rates of food avoidance. This information was available on 775 individuals aged 11 years and 757 aged 15 years. (more…)

Allergic March of Childhood and Allergen Sensitization

Natural history studies with the following design features provide a firm epidemiologic foundation for risk factor assessments and etiologic hypotheses:
(1) long-term cohort studies of a prospective design minimize biases resulting from poor parental recall;
(2) multiple evaluations over time provide important checkpoints during the dynamic period of childhood growth and development; and
(3) the inclusion of objective disease measurements strengthens these studies by validating subjective disease assessments (i.e. questionnaire data). (more…)

Child Health Questionnaire: Measuring Quality Of Life A Child With Food Allergy

Child Health Questionnaire
No cure is available for food allergy and food-allergic patients and their families are therefore burdened with the need to constantly avoid allergenic food while worrying about the potential effect of any accidental exposure. Living with food allergy can therefore be expected to impair the quality of life of the sufferer and their family. Until now, this issue has only been explored in food allergy with generic quality of life questionnaires such as the Child Health Questionnaire Parent Form 50 (CHQ-PF50). Disease-specific health-related quality of life questionnaires focus on areas that are most relevant to a specific disease and can therefore be expected to be more sensitive. Until now, there has been no validated health-related quality of life questionnaire for food allergy diagnosis. (more…)

Breast-Feeding Reduces The Risk Of Asthma During The First 4 Years Of Life

breast feeding allergy asthma
The protective effect of breast-feeding on asthma and allergy has been debated for more than 60 years without any hope of a consensus. A major problem is the lack of randomized controlled trials. However, breast-feeding has a number of other benefits and should be recommended irrespective of any effect on asthma or allergy. This is why randomized trials are not considered ethical. Thus, we have to rely on observational studies, which have produced conflicting results. Mothers who do or do not breastfeed differ in several environmental exposures, including socio-economic class, smoking and area of living, which influence indoor and outdoor exposure to pollutants. Despite statistical adjustment for these confounding factors, the evidence is never as robust as it would be with an randomized controlled trial. (more…)

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