Journals / Astım Allerji İmmünoloji / 2010 / Cilt: 8 - Sayı: 1

Blood eosinophil counts, ECP levels, ECP/eosinophil ratios in the acute asthma exacerbations triggered by upper respiratory tract infections

Üst solunum yolu infeksiyonları ile tetiklenen akut astım ataklarında viral etkenler, kan eozinofil sayısı, ECP değeri, ECP/eozinofil oranları

Pages
13–22
DOI
—
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Furthermore, allergen sensitivity, prophylactic medications and smoking exposure do not affect these levels.

📌 3 Key Takeaways

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Objective & Hypothesis:Objective: Asthma exacerbations are often triggered by viral respiratory tract infections in children.
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Key Findings & Data:While respiratory syncytial virus (RSV) was primarily identified as the causative agent, influenza A/H3N2 and parainfluenza type 3 were determined as the other viral causative agents in 13 (33.3%) of 42 patients.
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Conclusion & Impact:Furthermore, allergen sensitivity, prophylactic medications and smoking exposure do not affect these levels.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objective: Asthma exacerbations are often triggered by viral respiratory tract infections in children. The aim of the present study was to determine the interaction between asthmatic attacks triggered by viral upper respiratory tract infections and other identified factors on the number of eosinophils, serum eosinophilic cationic protein (ECP) and ECP/eosinophil ratios. Materials and Methods: Nasal mucosal swabs were obtained on the first admission from children who were hospitalized in the allergy department due to asthmatic attacks with upper respiratory tract infection symptoms, in order to determine viral causative agents. To determine the viral causative agents, viral studies were performed on the samples obtained. Eosinophil count, ECP, and ECP/eosinophil ratios were measured from the blood samples taken immediately on admission. The results were compared to determine the effects of asthmatic attacks, viral factors, drugs, and environmental exposures such as smoking on these values. Results: Forty-two patients who fulfilled the study criteria were enrolled into the study. While respiratory syncytial virus (RSV) was primarily identified as the causative agent, influenza A/H3N2 and parainfluenza type 3 were determined as the other viral causative agents in 13 (33.3%) of 42 patients. RSV, with 9 cases, was the most frequently identified viral agent in all types of asthma attacks. There was a positive correlation between ECP values and number of eosinophils. There were no significant effects on the number of eosinophils, ECP levels or ECP/eosinophil ratio according to factors such as attacks due to viral infection, allergen sensitivity, usage of prophylactic medications, smoking exposure, and severity of attacks. Conclusion: In children, asthma attacks are triggered by viral factors, especially RSV. During the attack period, the severity and causes of the attacks had no significant impact on inflammatory markers such as ECP levels, number of eosinophils, and ECP/eosinophil ratio. Furthermore, allergen sensitivity, prophylactic medications and smoking exposure do not affect these levels.

Özet

Giriş: Çocuklarda astım atakları sıklıkla viral solunum yolu infeksiyonları ile tetiklenmektedir. Bu çalışmada etkeni belirlenmiş viral üst solunum yolu infeksiyonu-atak ilişkisinde eozinofil sayısı, serum eozinofilik katyonik protein (ECP) seviyesi ve ECP/eozinofil düzeyinin etkileşimini görmek amaçlanmıştır. Gereç ve Yöntem: Çocuk allerji servisine astım atağı ile yatırılan hastalardan üst solunum yolu infeksiyonu semptomları görülenlerden atakla ilk başvuru anında viral etkeni tespit edilmek üzere nazal mukozal sürüntü alındı. Alınan örneklerden viral etken üretmek üzere viral çalışmaları yapıldı. Başvuru anında alınan kan örneklerinden eozinofil sayısı, ECP çalışılarak, ECP/eozinofil oranı hesaplandı. Elde edilen sonuçlar astım atağı, viral etken, kullanılan ilaçlar ve sigara gibi çevresel maruziyetlerin etkisini görmek üzere karşılaştırıldı. Bulgular: Çalışma kriterlerine uyan 42 hastanın 13 (%33.3)’ünde başta respiratuar sinsityal virüs (RSV) olmak üzere influenza A/H3N2, parainfluenza tip 3 viral etkenler olarak saptandı. RSV tüm atak tipleri içinde dokuz olgu ile en çok saptanan etkendi. Hastaların eozinofil sayısı, ECP değerleri arasında pozitif korelasyon vardı. Atağın viral infeksiyonla olması, allerjen duyarlılığı, profilaktik ilaç kullanımı, sigara maruziyeti, atak şiddeti gibi etkenlerin eozinofil sayısı, ECP, ECP/eozinofil oranı üzerinde anlamlı etkilerinin olmadığı görüldü. Sonuç: Çocuklarda astım atakları RSV başta olmak üzere viral etkenlerle tetiklenmektedir. Atak esnasında eozinofil sayısı, ECP düzeyi gibi inflamasyon markırları ve ECP/eozinofil oranları atak şiddetine ve nedenine göre farklılık göstermemektedir. Hastaların allerjenle duyarlanmış olması, profilaktik ilaç kullanımı ve sigara maruziyeti bu düzeyleri etkilememektedir.

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Cite This Article

TAYMAN, C., ÖZMEN, S., BADUR, S., ARSLAN, Z. (2010). Blood eosinophil counts, ECP levels, ECP/eosinophil ratios in the acute asthma exacerbations triggered by upper respiratory tract infections. Astım Allerji İmmünoloji, Cilt: 8 - Sayı: 1, 13–22. https://ajindex.com/articles/165073

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