Article

Airway allergy and skin reactivity to aeroallergens in Riyadh

Department of Pathology, Immunology Unit, College of Medicine and King Khalid University Hospital, King Saud University, Riyadh, Kingdom of Saudi Arabia.
Saudi medical journal (Impact Factor: 0.59). 04/2009; 30(3):392-6.
Source: PubMed

ABSTRACT

To determine the pattern of skin prick test reactivity to aeroallergens in patients with asthma and rhinitis (airway allergy) residing in Riyadh region.
This is a retrospective cross sectional study based on data analysis of skin prick test results of individuals with clinical diagnosis of airway allergy.Allergy skin prick test result data of 139 Saudi nationals from Riyadh region tested at King Khalid University Hospital between January 2003 and March 2004 was analyzed retrospectively. This group comprised of 53% females and 47% males, with a mean age of 27 +/- 12 years. A set of aeroallergens extracts for both indoor and outdoor allergens including fungal spores was used to test the patients.
Seventy-five percent (105) of patients reacted to one or more allergen extracts. The most frequently reacting indoor allergen was house dust mite (77.8%) followed by the cat (33.6%) and cockroach (19.2%). Among the outdoor allergens Prosopis juliflora was tested positive in 72.1%, Bermuda grass in 53.8%, Chenopodium album in 47.1%, Rye grass in 36.5% and Salsola kali in 36.5%. A significant proportion of patients were also found reacting to Moulds (18.2%) and Aspergillus fumigatus (18.2%) extracts.
Sensitivity to one or more aeroallergens was common in patients, indicating high level of aeroallergen sensitization in patients with airway allergy residing in Riyadh region.

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Available from: Adel Almogren, Dec 31, 2013
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    • "The spectrum of sensitization to inhalant allergens in patients with allergic asthma in Jeddah was predominated by HDMs followed by cat epithelia and German cockroach. Similar findings were reported by previous studies conducted in the Riyadh region and the eastern province of Saudi Arabia with a high level of inhalant allergen sensitization with varying rates of allergen sensitization[20,21]. In this context, it is also noteworthy that the prevalence of allergic asthma in a UK birth cohort at the age of 4 years was 44%. "

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    • "The prevalence of respiratory allergies caused by fungi is known to be about 12–42 % in atopic individuals (Barta et al. 2009; Almogren 2009). Studies based on the skin tests suggest that at least 3–10 % of adults and children worldwide are affected by fungal allergy (Bush and Portnoy 2001). "
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    • "Cockroach sensitivity among all the patients in our study was estimated at 18%. Approximately similar results were reported in two of Iran’s Arab neighboring countries: 19.2% in the city of Riyadh (139 patients with airway allergy)30 and 22.7% in Oman (689 patients).31 In contrast, a prevalence rate of 2.8% sensitivity to cockroaches was reported from Turkey;32 this finding is different from the rate reported in our country (2.8% versus 18%). "
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