Drug Induced Phospholipidosis and Cationic Amphiphilic Drugs

作者
Tuğçe Boran,Ayşe Tarbın Jannuzzi,Büket Alpertunga
出处
期刊:Istanbul University - DergiPark [Istanbul University]
卷期号:38 (2): 65-75
摘要

ABSTRACTPhospholipidosis is a lipid storage disorder and it is characterized by excessiveaccumulation of phospholipids in tissues such as liver, kidney, brain and lung.Accumulation of phospholipid in the cells leads to foamy cytoplasm, cytoplasmicvacuoles and lamellar bodies which are also used as important histopathologicalbiomarkers of phospholipidosis. Cationic amphiphilic drugs (CADs) are known tohave a potential for development of phospholipidosis. CADs have a hydrophobic ringstructure and hydrophilic side chain which contains an amine group. Because of theirhydrophobic structure, CADs can pass through the membrans easily and get trappedin the lysosomes thereby become cationic in the acidic environment of lysosomes.The mechanism and the functional effects of drug induced phospholipidosis are notfully understood. However, phospholipidosis is thought to be a toxic response due to aprobable relationship between cell death and altered cell functions, and the developmentof phospholipidosis is considered as an adverse reaction.Key words: Drug induced phospholipidosis, cationic amphiphilic drugs, drug adverseffectsÖZETFosfolipidozis bir lipid depo bozukluğudur ve karaciğer, böbrek, beyin ve akciğer gibidokularda fosfolipidlerin aşırı birikimi ile karakterizedir. Hücrelerde fosfolipid birikimifosfolipidozisin önemli histopatolojik biyobelirteçleri olarak da kullanılan köpüklüsitoplazmaya, sitoplazmik vakuollere ve lamellar cisimciklerin oluşmasına neden olur.Katyonik amfifilik ilaçlar (KAİ’lar)’ın fosfolipidozis geliştirme potansiyellerinin olduğubilinmektedir. KAİ’lar hidrofobik bir halka yapısı ile amin grubu içeren hidrofilik biryan zincire sahiptirler. Sahip oldukları hidrofobik yapı sayesinde membranları kolaylıklageçerler ve lizozomların asit ortamında katyonik hale geçip lizozomlarda tutulurlar.İlaçlar ile indüklenen fosfolipidozisin fonksiyonel olarak nasıl bir etkiye neden olduğuve mekanizması tam olarak bilinmemektedir. Ancak, fosfolipidozis ile değişmiş hücrefonksiyonları ve hücre ölümü arasında olası bir ilişki bulunması nedeniyle toksik biryanıt oluşturduğu düşünülmekte ve fosfolipidozis gelişimi advers etki olarak kabuledilmektedir.Anahtar kelimeler: İlaçlar ile indüklenen fosfolipidozis, katyonik amfifilik ilaçlar, ilaçadvers etkileri

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