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The Global ETD Search service is a free service for researchers
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Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Reoferetické a aferetické postupy pro odstranění cholesterolu a jejich dopad na imunitní systém / Cholesterol depletion using reopheretic and apheretic processes and impact of these methods on immune systemSvrčková, Ellen January 2010 (has links)
LDL-apheresis and haemorheopheresis are the most frequent methods of extracorporeal ellimination methods used for lowering the LDL cholesterol in patients with familial hypercholesterolaemia (FH). In case of failure of conservative therapy (represented by pharmacotherapy and/or dietary regime) these methods reprensent the effective and accessible solution for the clinical status characterized by high morbidity and mortality as well. The lipid components are the most frequent observed markers for the effeciveness of intervention. However, immunity with its effector molecules plays also essential role and there is suppose, that could also reflect the state and progress of atherosclerosis in FH patients. The aim of this thesis was to evaluate the levels of selected immunological markers (plasmatic glykoprotein α-2-macroglobulin, IL-10, soluble endoglin, soluble apoptotic factor sAPO-Fas and soluble form of adhesive P-selectin) and their changes after LDL-apheresis and haemorheopheresis employing enzyme immunoanalysis and immuno nephelometry. Totally, 12 patients were involved in this study, 3 were treated by haemorheopheresis, the rest 9 received LDL-apheresis. As a results, significant decreases in serum levels of α-2- macroglobulin, soluble endoglin and sAPO-1/Fas were recorded. Observed changes of...
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Adsorption av Low Density Lipoprotein (LDL) till modifierade agaros matriserKhandan, Negin January 2016 (has links)
Individer med homozygot familjär hyperkolesterolemi(FH), har höga halter av Low Density Lipoprotein (LDL) vilket leder till ökad risk för kardiovaskulära sjukdomar. Behandling av dessa individer kan göras med extrakorporal elimination av LDL med hjälp av specifika reningskolonner. Syftet med studien var att utvärdera några agarosmodifierade adsorbenter för denna applikation. Adsorbenterna, modifierad polyakrylat (DALI), agaros (Zetaros), direkt sulfateradZetarose och taurin immobiliserad Zetarose, inkuberades med humant plasma spädd med PBS, och en volyms förhållande mellan matris och plasman på 1:5. Inkubering utfördes i rumstemperatur under 60 min med kontinuerlig blandning i rotator. Efter inkubation centrifugerades proverna och LDL bestämdes i såväl supernatant som pellet. Totalmängd adsorberade proteiner analyserades också i eluat från erhållen pellet. LDL bestämdes indirekt med hjälp av Friedewaldsformel (LDL = totalkolesterol (TC) –highdensitylipoprotein (HDL) - (0,45 x Triglycerider(TG)). TC och TG bestämdes enzymatiskt medan HDL kvantifierades som TC efter utfällning av LDL med dextransulfat. Resultaten visar tydligt att DALI har god adsorptionsförmåga.Dock uppvisar de modifierade Zetaroserna begränsad adsorptionskapacitet för LDL. Vid desorption av adsorbenterna visar SDS en bättre elueringsförmåga än NaCl relaterad till protein, vilket tyder hydrofoba proteiner. Metodiken som används i studien är lämplig för vidare studier av andra adsorbenter som förväntas användas i kliniska applikationer för elimination av LDL hos FH patienter. / Individuals that suffer from homozygote Familiar Hyperkolesterolemia (FH), has increased amounts of Low Density Lipoproteins (LDL) which leads to a higher risk of cardiovascular diseases. Treatment of these individuals can be achieved by extracorporeal elimination of LDL using specific columns. The aim of this study was to evaluate different agarose-modified adsorbents ability to adsorb LDL from human plasma. The adsorbents (DALI, Zetarose, sulphonated Zetarose and taurine immobilized onto Zetarose) were incubated for 60 minutes with human plasma diluted with PBS, in a ratio of 1:5 between the matrix and the plasma during rotation with a rotator. After incubation the samples were centrifuged and the LDL content was determined in both the supernatant and the pellet. The amount proteins adsorbed were assayed by eluting the pellets. LDL was determined indirectly using Friedwalds equation; LDL= Total cholesterol (TC) - High density lipoprotein (HDL)-(0,45x Triglycerides (TG). The values of TC and TG in the sample were determined enzymatically, whilst HDL was quantified as TC after LDL-precipitation by dextran sulfate. The results clearly show that DALI has good adsorption capacity, but none of the modified Zetaroses shows any capacity to absorb LDL from human plasma. Desorption of the adsorbents using SDS gave higher amounts of eluated protein compared to NaCl elution, indicating hydrofobic proteins. However, the methods used in this study could be used to evaluate new adsorbents for LDL-elimination applications in patients with chronic hyperlipemia.
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Einfluss der LDL-Apherese auf die Plaqueentstehung und -stabilität anhand der Konzentrationsbestimmung von Biomarkern / Effect of LDL-apheresis on plaque formation and plaque stabilization on the basis of biomarker concentrationStrauchmann, Julia 05 March 2012 (has links)
No description available.
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