.: ORİJİNAL ARAŞTIRMA
Neovasküler Yaşa Bağlı Makula Dejenerasyonlu Olgularda Serum Vasküler Endotelyal Büyüme Faktörü ve Netrin-1 Düzeyinin Değerlendirilmesi: Olgu Kontrol Çalışması
Evaluation of Serum Vascular Endothelial Growth Factor and Netrin-1 Levels in Patients with Neovascular Age-Related Macular Degeneration: Case-Control Study
Turkiye Klinikleri J Ophthalmol. 2022;31(3):119-26
doi: 10.5336/ophthal.2021-86158
Makale Dili: TR
Tam Metin
ÖZET
Amaç: Bu çalışmanın amacı, neovasküler yaşa bağlı makula dejenerasyonu (n-YBMD) hastalarında serum vasküler endotelyal büyüme faktörü [vascular endothelial growth factor (VEGF)] ve netrin-1 düzeyini sağlıklı kontrol grubu ile karşılaştırarak, bu vasküler belirteçlerin düzeyindeki değişikliğin sistemik problemlerin belirtisi olup olmadığını araştırmaktır. Gereç ve Yöntemler: Kliniğimizde n-YBMD teşhisi almış ve intravitreal enjeksiyon planlanan 37 hasta ve kontrol grubu olarak katarakt cerrahisi planlanan 34 hasta dâhil edildi. Çalışma ve kontrol grubu hastalarında serum VEGF ve netrin-1 düzeyi enzime bağlı immünosorbent deney yöntemi kullanılarak ölçüldü. Bulgular: Çalışma grubunun medyan yaş değeri 77 (61-84) kontrol grubunun ise 75 (50-87) idi. N-YBMD grubunda serum netrin-1 ve netrin-1/VEGF oranı kontrol grubuna göre anlamlı olarak düşük ve serum VEGF oranı anlamlı olarak yüksek bulundu (tümü p<0,001). Alıcı işletim karakteristiği [receiver operating characteristic (ROC)] analizine göre netrin- 1 seviyesi n-YBMD'yi tahmin etmek için orta düzeyde bir kesinliğe sahipti. ROC eğrisi altında kalan alan %83,78 [%95 GA (güven aralığı), 68-93,8)] duyarlılık ve %85,29 (%95 GA, 68,9-95) özgüllük ile 0,883 (%95 GA, 0,797-0,970) olarak bulundu. Netrin-1 seviyeleri için en iyi kesim değeri ≤485,1 mg/mL idi ve bu istatistiksel anlamlı olarak değerlendirildi (p<0,001). Sonuç: N-YBMD hastalarında bulunan yüksek VEGF ve düşük netrin-1 serum düzeyi bu hastalığın sistemik ve inflamatuar bir hastalık olduğunu göstermektedir. Düşük serum netrin-1/VEGF oranı ise bu hastalıkta birbiri ile ilişkili anjiyogenik mediyatörlerin sistemik dengesinin bozukluğunun göstergesidir.
Anahtar Kelimeler: Makula dejenerasyonu; netrin-1; vasküler endotelyal büyüme faktörü A; inflamasyon
Amaç: Bu çalışmanın amacı, neovasküler yaşa bağlı makula dejenerasyonu (n-YBMD) hastalarında serum vasküler endotelyal büyüme faktörü [vascular endothelial growth factor (VEGF)] ve netrin-1 düzeyini sağlıklı kontrol grubu ile karşılaştırarak, bu vasküler belirteçlerin düzeyindeki değişikliğin sistemik problemlerin belirtisi olup olmadığını araştırmaktır. Gereç ve Yöntemler: Kliniğimizde n-YBMD teşhisi almış ve intravitreal enjeksiyon planlanan 37 hasta ve kontrol grubu olarak katarakt cerrahisi planlanan 34 hasta dâhil edildi. Çalışma ve kontrol grubu hastalarında serum VEGF ve netrin-1 düzeyi enzime bağlı immünosorbent deney yöntemi kullanılarak ölçüldü. Bulgular: Çalışma grubunun medyan yaş değeri 77 (61-84) kontrol grubunun ise 75 (50-87) idi. N-YBMD grubunda serum netrin-1 ve netrin-1/VEGF oranı kontrol grubuna göre anlamlı olarak düşük ve serum VEGF oranı anlamlı olarak yüksek bulundu (tümü p<0,001). Alıcı işletim karakteristiği [receiver operating characteristic (ROC)] analizine göre netrin- 1 seviyesi n-YBMD'yi tahmin etmek için orta düzeyde bir kesinliğe sahipti. ROC eğrisi altında kalan alan %83,78 [%95 GA (güven aralığı), 68-93,8)] duyarlılık ve %85,29 (%95 GA, 68,9-95) özgüllük ile 0,883 (%95 GA, 0,797-0,970) olarak bulundu. Netrin-1 seviyeleri için en iyi kesim değeri ≤485,1 mg/mL idi ve bu istatistiksel anlamlı olarak değerlendirildi (p<0,001). Sonuç: N-YBMD hastalarında bulunan yüksek VEGF ve düşük netrin-1 serum düzeyi bu hastalığın sistemik ve inflamatuar bir hastalık olduğunu göstermektedir. Düşük serum netrin-1/VEGF oranı ise bu hastalıkta birbiri ile ilişkili anjiyogenik mediyatörlerin sistemik dengesinin bozukluğunun göstergesidir.
Anahtar Kelimeler: Makula dejenerasyonu; netrin-1; vasküler endotelyal büyüme faktörü A; inflamasyon
ABSTRACT
Objective: To compare serum vascular endothelial growth factor (VEGF) and netrin-1 levels in patients with neovascular age-related macular degeneration (n-AMD) with a healthy control group, to investigate whether changes in the level of these vascular markers are a sign of systemic problems. Material and Methods: In our clinic, 37 patients who were diagnosed with n-AMD and were scheduled for intravitreal injection, and 34 patients who were scheduled for cataract surgery as the control group were included in the study. Serum VEGF and netrin-1 levels were measured using the enzymelinked immunosorbent assay method in the study and control group. Results: The median age of the study group was 77 (61-84) and the control group was 75 (50-87). Serum netrin-1/VEGF ratio and netrin- 1 levels were significantly lower and VEGF levels were significantly higher in n-AMD patients compared to the control group (p<0.001 for all). According to the receiver operating characteristic (ROC) analysis, the netrin-1 level had a moderate precision to predict n-AMD. The area under the ROC curve was 0.883 [95% confidence index (CI), 0.797- 0.970] with a sensitivity of 83.78% (95% CI, 68-93.8) and a specificity of 85.29% (95% CI, 68.9-95). For netrin-1 levels, the best cut-off value was ≤485.1 mg/mL, with a statistically significant difference (p<0.001). Conclusion: Low serum netrin-1 and high VEGF levels detected in patients with neovascular AMD indicate a manifestation of systemic inflammatory disease. The low serum netrin-1/VEGF ratio indicates that the systemic balance of these biomarkers is impaired in this disease.
Keywords: Macular degeneration; netrin 1; vascular endothelial growth factor A; inflammation
Objective: To compare serum vascular endothelial growth factor (VEGF) and netrin-1 levels in patients with neovascular age-related macular degeneration (n-AMD) with a healthy control group, to investigate whether changes in the level of these vascular markers are a sign of systemic problems. Material and Methods: In our clinic, 37 patients who were diagnosed with n-AMD and were scheduled for intravitreal injection, and 34 patients who were scheduled for cataract surgery as the control group were included in the study. Serum VEGF and netrin-1 levels were measured using the enzymelinked immunosorbent assay method in the study and control group. Results: The median age of the study group was 77 (61-84) and the control group was 75 (50-87). Serum netrin-1/VEGF ratio and netrin- 1 levels were significantly lower and VEGF levels were significantly higher in n-AMD patients compared to the control group (p<0.001 for all). According to the receiver operating characteristic (ROC) analysis, the netrin-1 level had a moderate precision to predict n-AMD. The area under the ROC curve was 0.883 [95% confidence index (CI), 0.797- 0.970] with a sensitivity of 83.78% (95% CI, 68-93.8) and a specificity of 85.29% (95% CI, 68.9-95). For netrin-1 levels, the best cut-off value was ≤485.1 mg/mL, with a statistically significant difference (p<0.001). Conclusion: Low serum netrin-1 and high VEGF levels detected in patients with neovascular AMD indicate a manifestation of systemic inflammatory disease. The low serum netrin-1/VEGF ratio indicates that the systemic balance of these biomarkers is impaired in this disease.
Keywords: Macular degeneration; netrin 1; vascular endothelial growth factor A; inflammation
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