Abdullah TAŞKIN, Fazilet DUYGU, Nurten AKSOY, Ahmet EYBİLEN, Hasan BİLİNÇ, Sema KOÇ

Serum paraoxanase-1 activity in patients with acute otitis media

Amaç: Paraoksonaz (PON) yüksek dansiteli lipoprotein (HDL) ile ilişkili antioksidan bir enzimdir. Bu çalışmada akut otitis media (AOM) hastaları ile sağlıklı kontrol grubu arasında PON 1 aktivitesini karşılaştırmak amaçlanmaktadır. Gereç ve yöntem: AOM hastalarında prospektif, kontrollü bir çalışma yaptık. Çalışmaya 30 AOM hastası (17 erkek; yaş, 15 ± 9 yıl) ve 30 kontrol grubu (16 erkek; yaş, 16 ± 5) olmak üzere 60 birey dahil edildi. Hasta ve kontrol grubunda Mackness’in metodu ile PON 1 aktivitesi ölçüldü. Bulgular: Akut otitis media hasta grubunda, kontrol grubuna göre PON 1 aktivitesi düşük düzeyde idi (155 ± 95 U/L ve 210 ± 96 U/L, P=0.04). Sonuç: Akut otitis media’da oksidatif stres oluşmaktadır. Oluşan oksidatif hasarı önlemek amacıyla PON 1 enzimi daha fazla tüketilmektedir. Bu nedenle AOM hastalarında bu enzim aktivitesi düşük düzeyde elde edilmektedir.

Akut otitis media hastalarında serum paraoksonaz-1 aktivitesi

Objectives: Paraoxonase is a high-density lipoprotein (HDL)-associated antioxidant enzyme. We aimed to compare the activity of serum paraoxanase-1 (PON 1) in healthy controls and patients with acute otitis media (AOM). Subjects and methods: We performed a prospective controlled trial in patients with AOM. A total of 60 subjects, 30 patients with AOM (17 male; age, 15 ± 9 years) and 30 age- and sex-matched controls (16 male; age, 16 ± 5 years) were enrolled in this study. PON 1 activity was measured using Mackness’ methods. Results: PON 1 activity was significantly lower in the AOM group compared to control group (155 ± 95 U/L vs. 210 ± 96 U/L, P=0.04). Conclusions: The present study demostrates that serum PON 1 activity is low in AOM, similar to other conditions with increased oxidative stress. We speculate that PON 1 enzyme is consumed at a greater rate during AOM in order to prevent increased oxidative damage.

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