Publication: Hematolojik Maligniteli Hastalarda İnvaziv Pulmoner Aspergillozis Tanısında İnterlökin-8 Düzeyinin Değerlendirilmesi
Abstract
Amaç: İnvaziv pulmoner aspergillozis (IPA) tanısı klinik, mikrobiyolojik ve radyolojik yöntemlerin birlikte kullanımına dayanmaktadır. IPA tanısında İnterlökin (IL)-8 düzeyinin belirlenmesi amaçlanmıştır. Materyal ve Metod: Bu çalışma hematolojik malignitesi olan 50 kontrol ve 25 IPA hastası ile yapılmıştır. Hastaların demografik verileri, hematolojik tanıları, uygulanan kemoterapiler, galaktomannan düzeyi, mantar kültürü, bilgisayarlı tomografi (BT) bulguları prospektif olarak değerlendirilmiştir. Hastalardan serum ve bronkoalveolar lavaj (BAL) sıvısı örnekleri alınmıştır. IL-8 düzeyleri Enzyme-Linked Immuno Sorbent Assay (ELISA) yöntemiyle çalışılmıştır. Bulgular: Vaka grubundaki hastaların yaş ortalaması 60,84±15,38, kontrol grubunun yaş ortalaması 58,38±16,64 bulunmuştur. IPA hastalarının 2/25'i (%8) 'kanıtlanmış', 13/25'i (%52) 'yüksek olası', 10/25'i (%40) 'olası' IA olarak tespit edilmiştir. Serum IL-8 düzeyleri vaka grubunda kontrol grubuna kıyasla anlamlı yüksek bulunmuştur (p=0,007). Ancak serum IL-8 düzeyleri ile mortalite arasında ilişki tespit edilmemiştir (p=0,202). Serum IL-8 düzeyleriyle nötrofil sayıları arasında negatif yönlü (r=-0,512; p<0,001), nötropeni süresi ile pozitif yönlü(r=0,459; p<0,001), galaktomannan düzeyleri ile pozitif yönlü zayıf şiddette ilişki saptanmıştır(r=0,294; p=0,038). İPA hastalığını tespit etmede serum IL-8 parametresi için anlamlı bir kesme değer ≥ 274 ng/L (AUC=0,693; p=0,007), duyarlılık %72, özgüllük değeri %64, pozitif prediktif değer %50 ve negatif prediktif değeri %82,05 olarak elde edilmiştir. Alt grup analizinde ise vaka grubu ile nötropenik olan kontrol grubu hastaları arasında serum IL-8 seviyelerinde istatistiksel olarak anlamlı farklılık tespit edilmemiş (p=0,362), nötropenik olmayan kontrol grubu hastalarıyla ise istatistiksel anlamlı fark bulunmuştur (p<0,001). Tartışma ve Sonuç: IPA gelişen nötropenik hastalarda serum IL-8 düzeyleri hastalık tanısında ve mortalite öngörmede başarılı değildir. IPA tanısında halen yüksek duyarlılık ve özgüllüğe sahip, kolay uygulanabilir yeni yöntemlere ihtiyaç vardır.
Objectives: The diagnosis of invasive pulmonary aspergillosis is based on the combined use of clinical, microbiological, and radiological methods. It is aimed to determine the level of IL-8 in the diagnosis of IPA. Materials and methods: This study was planned with 50 controls and 25 IPA patients with hematological malignancies. Demographic data, hematological diagnoses, chemotherapy, galactomannan level, fungal culture, and computed tomography findings of the patients were evaluated prospectively. Serum and BAL fluid samples were obtained from the patients. IL-8 levels were studied with the ELISA method. Results: The mean age of the patients in the case group was 60.84±15.38 years, and the mean age of the control group was 58.38±16.64 years. 2/25 (8%) of the patients were 'proven,' 13/25 (52%) 'probable,' 10/25 (40%) 'possible' IA. Serum IL-8 levels were found to be significantly higher in the case group compared to the control group (p=0.007). However, no correlation was found between serum IL-8 levels and mortality (p=0.202). There was a negative correlation between serum IL-8 levels and neutrophil counts (r=-0.512;p<0.001), a positive correlation with the duration of neutropenia (r=0.459; p<0.001), and a weak positive correlation with galactomannan levels (r=0.294;p=0.038). A significant cut-off value for serum IL-8 parameter in detecting IPA disease was obtained ≥274 ng/L (AUC=0.693;p=0.007), sensitivity was 72%, specificity was 64%, PPV was 50% and NPV was 82%. In the subgroup analysis, there was no significant difference in serum IL-8 levels between the case group and the patients in the neutropenic control group (p=0.362), there was a significant difference found with the patients in the non-neutropenic control group (p<0.001). Conclusion: Serum IL-8 levels in neutropenic patients who develop IPA are not successful in the diagnosis of the disease and predicting mortality. There is still a need for new, easily applicable methods with high sensitivity and specificity in the diagnosis of IPA.
Objectives: The diagnosis of invasive pulmonary aspergillosis is based on the combined use of clinical, microbiological, and radiological methods. It is aimed to determine the level of IL-8 in the diagnosis of IPA. Materials and methods: This study was planned with 50 controls and 25 IPA patients with hematological malignancies. Demographic data, hematological diagnoses, chemotherapy, galactomannan level, fungal culture, and computed tomography findings of the patients were evaluated prospectively. Serum and BAL fluid samples were obtained from the patients. IL-8 levels were studied with the ELISA method. Results: The mean age of the patients in the case group was 60.84±15.38 years, and the mean age of the control group was 58.38±16.64 years. 2/25 (8%) of the patients were 'proven,' 13/25 (52%) 'probable,' 10/25 (40%) 'possible' IA. Serum IL-8 levels were found to be significantly higher in the case group compared to the control group (p=0.007). However, no correlation was found between serum IL-8 levels and mortality (p=0.202). There was a negative correlation between serum IL-8 levels and neutrophil counts (r=-0.512;p<0.001), a positive correlation with the duration of neutropenia (r=0.459; p<0.001), and a weak positive correlation with galactomannan levels (r=0.294;p=0.038). A significant cut-off value for serum IL-8 parameter in detecting IPA disease was obtained ≥274 ng/L (AUC=0.693;p=0.007), sensitivity was 72%, specificity was 64%, PPV was 50% and NPV was 82%. In the subgroup analysis, there was no significant difference in serum IL-8 levels between the case group and the patients in the neutropenic control group (p=0.362), there was a significant difference found with the patients in the non-neutropenic control group (p<0.001). Conclusion: Serum IL-8 levels in neutropenic patients who develop IPA are not successful in the diagnosis of the disease and predicting mortality. There is still a need for new, easily applicable methods with high sensitivity and specificity in the diagnosis of IPA.
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