Giris ve Amaç: Bu çalismada ülseratif kolitli hastalarda serum paraoksonaz 1 ve arilesteraz düzeyleri ve bu parametrelerin hastalik aktivitesi ile iliskileri arastirildi. Gereç ve Yöntem: Çalismaya 38 aktif dönemde ülseratif kolit hastasi ve 38 saglikli kontrol grubu hastasi dahil edildi. Çalisma grubu hastalarindan hem aktif dönemde hem de remisyon saglaninca paraoksonaz 1 ve arilesteraz enzim aktiviteleri çalisildi. Paraoksonaz 1 ve arilesteraz enzim aktiviteleri aktif dönem, remisyon dönemi ve kontrol grubu arasinda kiyaslandi. Bulgular: Çalisma grubu hastalarinin yas ortalamasi 40.3±14.6 yil (19-78) olup hastalarin 20’si erkek (%52.6) ve 18’i kadin (%47.4) idi. Kontrol grubu hastalarinin demografik özellikleri çalisma grubuna benzerdi. Aktif dönemdeki ülseratif kolit hastalarinin ortalama serum paraoksonaz 1 degeri 65.8±15.0 U/L, ortalama serum arilesteraz degeri ise 151.0±236.6 U/mL olarak tespit edildi. Remisyon dönemindeki hastalarda ortalama serum paraoksonaz 1 degeri 82.4±58.4 U/L, ortalama serum arilesteraz degeri ise 94.1±134.6 U/ mL olarak tespit edildi. Kontrol grubundaki hastalarda ortalama serum paraoksonaz 1 degeri 131.7±63.5 U/L, ortalama serum arilesteraz de- geri ise 287.3±295.6 U/mL olarak tespit edildi. Ülseratif kolitli hastalarda ortalama paraoksonaz 1 ve arilesteraz düzeyleri aktif ve remisyon dönemi arasinda istatistiksel olarak anlamli fark göstermedi (p>0.05). Aktif ve remisyon dönemindeki ülseratif kolitli hastalarda ortalama paraoksonaz 1 ve arilesteraz degerleri kontrol grubundaki saglikli bireylere göre istatistiksel olarak anlamli sekilde düsük bulundu (p<0.05). Sonuç: Ülseratif kolitli hastalarda paraoksonaz 1 ve arilesteraz aktivitelerinin kontrol grubuna göre istatiksel olarak anlamli sekilde azaldigi ancak hastalik aktivitesi ile paraoksonaz 1 ve arilesteraz aktiviteleri arasinda iliski bulunmadigi gösterilmistir
Background and Aims: In this study, we studied serum paraoxanase 1 and arylesterase levels in patients with ulcerative colitis and their relationship with disease activity. Material and Methods: Thirty-eight patients with active ulcerative colitis and 38 healthy controls were included in this study. Paraoxanase 1 and arylesterase enzyme activities in both active and remission phases were studied. Paraoxanase 1 and arylesterase enzyme activities in the active disease phase, the remission phase, and the control group were compared. Results: The mean patient age in the study group was 40.3±14.6 years (19-78); 20 patients were male (52.6%) and 18 were female (47.4%). The demographic characteristics of the patients in the control group were similar to those of the study group. The mean serum paraoxanase 1 level was 65.8±15.0 U/L, and the mean serum arylesterase level was 151.0±236.6 U/mL in patients in the active phase. The mean serum paraoxanase 1 level was 82.4±58.4 U/L, and the mean serum arylesterase level was 94.1±134.6 U/mL in patients in the remission phase. The mean serum paraoxanase 1 level was 131.7±63.5 U/L, and the mean serum arylesterase level was 287.3±295.6 U/mL in the control group. There was no statistically significant difference in mean paraoxanase 1 and arylesterase levels between patients in the active and remission phases (p > 0.05). The mean levels of paraoxanase 1 and arylesterase in patients in the active and remission phases were significantly lower than those in healthy controls (p < 0.05). Conclusion: In patients with ulcerative colitis, paraoxanase 1 and arylesterase enzyme activities were found to be significantly lower than those in the control group, but there was no relationship between disease activity and paraoxanase 1 and arylesterase enzyme activities