الفهرس | Only 14 pages are availabe for public view |
Abstract Pollen is one of the main reasons to cause seasonal allergic respiratory diseases and it is influenced by multiple risk factors. Pollens are divided into three main groups, grass, weed and tree. Our study was conducted on 200 Egyptian patient with respiratory allergy to determine the most prevalent allergenic pollens among these patients. The prevalence of respiratory allergy patients was higher among female group compared to male group. Moreover, the percentage of patients living in urban areas was higher than that in rural areas. 21.5 % of our patients complained of oral allergy syndrome symptoms which depend on the cross-reactivity between pollen allergens and food proteins. 85.5% of the total patients were positive to at least one of the pollen allergens. We reported that 28.5% of patients had positive SPT to Timothy grass and Maize pollens being the most prevalent. This agreed with the fact that grass pollen is one of the most frequent reasons for plant related allergenic reactions worldwide. The majority of patients with positive pollen allergens had AR (66.8%) while (33.2%) only of asthmatics had positive results to pollen allergens. The most prevalent pollen in BA patients was maize pollen (26.5%), while in AR patients was timothy grass. We also compared residency of the patients with types of pollens and reached out that the most prevalent pollen in rural areas was Timothy grass pollen and in urban areas was maize pollen, which means that grass pollens, as a whole species is prevalent throughout urban and rural areas together. We analyzed the patients‟ symptoms and found that peaks of allergic respiratory diseases were at January (26.5%), December (21.5%), March (18%) and June (16%) respectively. This came in line with the fact that the start dates for the appearance of significant allergens is prevalent earlier in the year (January) and in late spring and early summer (March and June). In our current study, the most prevalent crossreactive food with pollens evident by SPT were orange (12%) followed by tomato (11.5%) and soya (11%). We demonstrated that tomato was highly cross-reactive with timothy grass (43.5%) and maize pollen (39.1%). Orange was highly cross-reactive with cultivated rye and Russian thistle (33.3%).residency of the patients with types of pollens and reached out that the most prevalent pollen in rural areas was Timothy grass pollen and in urban areas was maize pollen, which means that grass pollens, as a whole species is prevalent throughout urban and rural areas together. We analyzed the patients‟ symptoms and found that peaks of allergic respiratory diseases were at January (26.5%), December (21.5%), March (18%) and June (16%) respectively. This came in line with the fact that the start dates for the appearance of significant allergens is prevalent earlier in the year (January) and in late spring and early summer (March and June). In our current study, the most prevalent crossreactive food with pollens evident by SPT were orange (12%) followed by tomato (11.5%) and soya (11%). We demonstrated that tomato was highly cross-reactive with timothy grass (43.5%) and maize pollen (39.1%). Orange was highly cross-reactive with cultivated rye and Russian thistle (33.3%). |