Ovarian cancer is the fifth most common malignancy in the world's female population and with the highest lethality index among gynecological tumors. The prognosis of metastatic disease is usually poor, especially in platinum-resistant cases. There are several options for the treatment of metastatic disease resistant to platinum derivates (e.g. paclitaxel, topotecan and pegylated liposomal doxorubicin), all of which are considered equipotent. Pegylated liposomal doxorubicin (PLD) is a liposomal form of the anthracycline antibiotic doxorubicin. It is characterized by more convenient pharmacokinetics and a different toxicity profile. Cardiotoxicity, the major adverse effect of conventional doxorubicin, is reduced in PLD as well as hematotoxicity, alopecia, nausea and vomiting. Skin toxicity and mucositis, however, emerge as serious issues since they represent dose and schedule-limiting toxicities. The pharmacokinetics of PLD (prolonged biological half-life and preferential distribution into tumor tissue) provide new possibilities to address these toxicity issues. The extracorporeal elimination of circulating liposomes after PLD saturation in the tumor tissue represents a novel and potent strategy to diminish drug toxicity. This article intends to review PLD characteristics and the importance of extracorporeal elimination to enhance treatment tolerance and benefits. and O. Kubeček, M. Bláha, D. Diaz-Garcia, S. Filip
LDL-aferéza je extrakorporální eliminační metodika, která usiluje o pokud možno specifické odstranění LDL-cholesterolu z cirkulující krve. V současnosti je používáno 6 účinných metod k selektivnímu odstranění LDL-cholesterolu. Mezi hlavní indikace k léčbě LDL-aferézou patří diagnózy homozygotní familiární hypercholesterolemie, heterozygotní familiární hypercholesterolemie refrakterní nebo při intoleranci k standardní léčbě, a dále pacienti se zvýšením lipoproteinu(a) refrakterní nebo intolerantní k farmakoterapii. Dosud však není jednoty o tom, jaká hladina LDL-cholesterolu je rozhodující pro zahájení LDL-aferézy, názory se liší i v jednotlivých státech. I když neexistují klasické velké randomizované studie, existuje dostatečný počet dobře řízených studií k tomu, aby v celém světě bylo uznáváno, že je efekt LDL-aferézy na kardiovaskulární prognózu u závažné hypercholesterolemie významný., LDL-apheresis is an extracorporeal elimination technique, which specifically removes LDL-cholesterol from the circulation. There are six methods for the selective LDL-cholesterol removal these days. The main indications for LDL-apheresis are the diagnosis of homozygous familial hypercholesterolemia, heterozygous familial hypercholesterolemia which is refractory the standard care and intolerance of routine care, and also patients with lipoprotein(a) increase resistant to the farmacotherapy. There is still debate which LDL-cholesterolemia is indication for LDL-apheresis therapy, and the recommendation differs among various countries. Despite large randomized trials are missing, there are several good quality studies to conclude, that the beneficial cardiovascular effects of LDL-apheresis in severe hypercholesterolemia are important and beneficial, and Vladimír Bláha, Milan Bláha, Miriam Lánská, Eduard Havel, Pavel Vyroubal, Zdeněk Zadák, Pavel Žák, Luboš Sobotka