AI Article Synopsis
- The study evaluates the effectiveness of two different filters used in double-filtration plasmapheresis (DFPP) for removing pathogenic antibodies while preserving coagulation factors.
- The CascadefloEC-50 W filter showed significantly reduced loss of coagulation factors compared to the PlasmafloOP-08 W filter, particularly for larger proteins, while both filters had similar effects on immunoglobulin (IgG) removal.
- Results suggest that using the CascadefloEC-50 W filter is advantageous for patients by maintaining critical clotting factors without compromising the removal of harmful antibodies.
Article Abstract
Background: Double-filtration plasmapheresis (DFPP), a selective therapeutic apheresis, can deplete pathogenic antibodies/substances, but also important coagulation factors.
Aim: To determine if the use of a separator filter with different characteristics (CascadefloEC-50 W) as compared to the reference filter (PlasmafloOP-08 W) is as efficient in terms of immunoglobulin loss, but can reduce coagulation factor losses and have similar tolerability.
Patients/methods: This is a single-center prospective study including 14 patients divided into two groups (7 each): that is, group1 = CascadefloEC-50 W and group2 = PlasmafloOP-08 W. We measured immunoglobulins, lipid profiles, blood-cell counts, hemostasis (prothrombin time, activated partial thromboplastin time), coagulation factors, and natural anticoagulants at before and after the first DFPP-session.
Results: In group 1, the loss of coagulation factors was significantly reduced as compared to group 2 for proteins with a molecular weight of >150 kDa: there was, respectively, an average decrease of 70% vs 31% for fibrinogen (P = 0.004), 66% vs 21% for factor V (P = 2.16e-07), 60% vs 32% for factor XI (P = 6.96e-06), 75% vs 17% for XIII-antigen (P = 0.0002), and 47% vs 0% for VWF-antigen(P = 0.02). The decrease in post-session IgG was, on average, 45% in group 1 and 50% in group 2 (P = 0.13). Those results remained significant even when adjusted to the treated-plasma volume and the pre-DFPP factor values.
Conclusion: DFPP, using a CascadefloEC-50W as a first-filter, reduces efficiently IgGs similarly to PlasmafloOP-08W but spares clotting factors.
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| http://dx.doi.org/10.1002/jca.21928 | DOI Listing |
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