Deneysel Karaciğer Hasarı ve Fibrozis Modelleri
Özet
Deneysel karaciğer hasarı ve fibrozis modelleri, hepatik patofizyolojinin araştırılması ve yeni tedavi stratejilerinin geliştirilmesi için temel araçlardır. Bu çalışmada, kimyasal indüksiyon, diyet bazlı protokoller, cerrahi modeller ile oluşturulabilinen karaciğer hasarı modelleri ve bu modellerin değerlendirme yöntemleri incelenmektedir. Karaciğer hasarı oluşturmak için kullanılan Karbon Tetraklorür (CCl₄) ve Tiyoasetamid (TAA) gibi toksinler hızlı fibrozis oluşturmak için sık kullanılmaktadır. Yüksek yağlı diyet modelleri metabolik sendrom ilişkili hastalıkları taklit eden modellerdir. Safra kanalı ligasyonu (SKL) yöntemi ise kolestatik hasarı, parsiyel hepatektomi ise rejenerasyon süreçlerini modellemek için kullanılır. Karaciğerde oluşan fibrotik değişimler; immunhistokimyasal ve histopatolojik analizler yanı sıra ileri görüntüleme teknikleri ile de değerlendirilebilmektedir. Model seçimi, araştırma sorusuna, translasyonel uyuma ve etik prensiplere göre yapılmalıdır. Organ-on-chip teknolojileri ve yapay zekâ destekli analizler gibi gelişmeler, bu alandaki araç çeşitliliğini artırmaktadır.
Experimental liver injury and fibrosis models are essential tools for investigating hepatic pathophysiology and developing new therapeutic strategies. This study examines liver injury models—which can be established through chemical induction, diet-based protocols, and surgical methods—as well as the evaluation techniques for these models. Toxins such as Carbon Tetrachloride (CCl₄) and Thioacetamide (TAA) are frequently utilized to induce rapid fibrosis. High-fat diet models are employed to mimic diseases associated with metabolic syndrome. Furthermore, the Bile Duct Ligation (BDL) method is used to model cholestatic injury, while partial hepatectomy is used to model regeneration processes. Fibrotic changes occurring in the liver can be evaluated through immunohistochemical and histopathological analyses, as well as advanced imaging techniques. Model selection should be based on the research question, translational compatibility, and ethical principles. Developments such as organ-on-a-chip technologies and AI-assisted analyses are increasing the diversity of tools available in this field.
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