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Kopprasch, S.* ; Graessler, J.* ; Bornstein, S.R.* ; Schwarz, P.E.* ; Tselmin, S.* ; Frind, A.* ; Poberschin, I.* ; Julius, U.*

Beyond lowering circulating LDL: apheresis-induced changes of systemic oxidative stress markers by four different techniques.

Atherosclerosis 10, 34-38 (2009)

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OBJECTIVE AND METHODS: Dyslipidemia and oxidative stress are causally related to atherogenesis and cardiovascular disease. We assessed acute changes of systemic oxidative stress biomarkers in thirty-two patients undergoing regular apheresis using four different techniques: heparin-induced extracorporeal LDL precipitation (HELP), direct adsorption of lipoproteins (DALI), lipidfiltration (LF), and immunoadsorption of lipoproteins (IA). RESULTS: All apheresis procedures were similarly effective in lowering LDL cholesterol (-2.5+/-0.2 mmoL/L), oxidized LDL (-52.4+/-4.4 U/L), and levels of antioxLDL antibodies (-59.5+/-15.1 U/L). Among the LDL-apheresis methods investigated, only the DALI technique without prior separation of blood plasma led to a decline in leukocyte count (p=0.01 vs. LF post apheresis) and to decreased phagocyte oxidant-generating activity as evaluated by chemiluminescence. Moreover, DALI was followed by a smaller decrease of blood total antioxidant capacity than the other techniques (p<0.01 vs. HELP post apheresis). CONCLUSION: Together, our data suggest that compared with other common techniques, the DALI apheresis system is accompanied by the lowest systemic oxidative burden evoked by a single apheresis treatment.

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