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Title:SERUMSKE PROSTE LAHKE VERIGE PRI DIAGNOSTIKI DISEMINIRANEGA PLAZMOCITOMA
Authors:ID Kolbič, Martina (Author)
ID Glaser, Marjana (Mentor) More about this mentor... New window
ID Modrič Korošec, Evgenija (Comentor)
Files:.pdf UNI_Kolbic_Martina_2012.pdf (2,64 MB)
MD5: 54D959463B2BEE994ADC3F7E04310B58
PID: 20.500.12556/dkum/3d95cbbe-2c49-48a4-9c76-97ec971f6664
 
Language:Slovenian
Work type:Undergraduate thesis
Typology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:Serumske (monoklonske) proste lahke verige kapa (PLV κ) in lambda (PLV λ) so pomemben tumorski označevalec diseminiranega plazmocitoma. Vrednosti prostih lahkih verig se uporabljajo za ugotavljanje in napovedovanje bolezni, spremljanje asimptomatskih bolnikov ter za oceno odgovora na zdravljenje. Poliklonske proste lahke verige določamo v serumu pri splošnem imunskem odzivu, kroničnih infekcijah in ledvičnih boleznih. Namen diplomske naloge je bil primerjava dveh različnih laboratorijskih testov za določanje prostih lahkih verig v serumu. V delu smo primerjali rezultate nove nefelometrične metode N Latex FLC nemškega proizvajalca Siemens, z v rutinski diagnostiki že uveljavljeno nefelometrično metodo Freelite angleškega proizvajalca The Binding Site. Obe metodi temeljita na imunokemijski reakciji med antigenom in specifičnimi protitelesi. Metoda Freelite uporablja za detekcijo prostih lahkih verig poliklonska, metoda N Latex FLC pa monoklonska protitelesa. Cilj diplomske naloge je dokazati, ali daje nova metoda N Latex FLC primerljive rezultate metodi Freelite. Za namen diplomske naloge smo analizirali 85 vzorcev seruma naključno izbranih preiskovancev, ki so imeli v času opravljanja diplomske naloge naročeno preiskavo za določitev koncentracije prostih lahkih verig v serumu. Primerljivost dobljenih rezultatov (koncentracije κ in λ prostih lahkih verig z izračunom količnika κ/λ) smo ugotavljali z različnimi statističnimi orodji. Pri primerjavi rezultatov PLV κ smo ugotovili dobro korelacijo in ujemanje (rs = 0,947, 76,4 %), prav tako pri primerjavi količnikov κ/λ (rs = 0,846, 81,1 %). Nekoliko slabše ujemanje in korelacijo smo zaznali le pri primerjavi koncentracij PLV λ (rs = 0,775, 61,2 %). Vzrok za to je najverjetneje slaba specifičnost protiteles in polimerizacija, značilna za PLV lambda. S statistično analizo podatkov smo ugotovili, da med metodama ni signifikantnih razlik, ki bi bistveno vplivale na končno interpretacijo rezultatov, zato smo zaključili, da je testna metoda N Latex FLC primerljiva z referenčno metodo Freelite. Ker je bila naša študija izvedena na manjšem številu vzorcev in ker je trenutno še premalo strokovne literature o primerljivosti obeh metod (metoda N Latex FLC je na tržišču šele 1 leto), priporočamo še nadaljnje raziskave na tem področju. Določiti bi morali še njen klinični pomen pri posameznih obolenjih, predvsem pri nekaterih redkih oblikah plazmocitoma in drugih monoklonskih gamopatijah.
Keywords:serumske proste lahke verige, diseminirani plazmocitom, nefelometrija, imunoglobulin, monoklonska protitelesa, poliklonska protitelesa
Place of publishing:Maribor
Publisher:[M. Kolbič]
Year of publishing:2012
PID:20.500.12556/DKUM-38903 New window
UDC:616.1(043.2)
COBISS.SI-ID:16683542 New window
NUK URN:URN:SI:UM:DK:S0MXQCUS
Publication date in DKUM:05.11.2012
Views:10219
Downloads:755
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
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Secondary language

Language:English
Title:SERUM FREE LIGHT CHAINS IN THE DIAGNOSIS OF MULTIPLE MYELOMA
Abstract:Serum (monoclonal) free light chains kappa (FLC κ) and lambda (FLC λ) are important tumor markers of multiple myeloma. Values of free light chains have been used for assessment and prediction of disease progression, observation of asymptomatic patients, and for the evaluation of response to treatment. We define the polyclonal free light chains in the serum with general immune reaction, chronic infections, and kidney diseases. The purpose of the diploma thesis has been a comparison between two different lab tests for defining free light chains in the serum. We have compared the results of a new nephelometric method N Latex FLC of German producer Siemens with an established nephelometric method in the routine diagnostics Freelite (English producer The Binding Site). Both methods are based on immunochemical reaction between antigene and specific antibodies. The method Freelite uses polyclonal antibodies for the detection of free light chains; on the other hand, the method N Latex FLC uses monoclonal antibodies. The goal of the diploma thesis has been to prove if the new method N Latex FLC gives comparable results to the method Freelite. We have analyzed 85 samples of serum of coincidentally chosen people who during the time of the diploma thesis research had a research for defining concentration of free light chains in the serum. We have been finding out about the results comparison (concentration of κ and λ free light chains with calculation of the quotient κ/λ) with different statistic tools. When comparing the results of FLC κ we have found a good correlation and matching (rs = 0.947, 76.4 %) as well as with comparison of the quotient κ/λ (rs = 0.846, 81.1 %). There has been a bit worse matching and correlation only with the comparison of concentrations FLC λ (rs = 0,775, 61,2 %). The reason for this is probably bad specifics of antibodies and polymerization, typical for FLC lambda. We have found out with the statistic analysis of data that there are no significant differences between the two methods, which did not have an influence on the final interpretation of the results. Therefore, we have concluded that the test method N Latex FLC is comparable to the reference method Freelite. Since our study has been done on a smaller number of samples, and currently there is not enough literature on the comparability of both methods (N Latex FLC method is on the market only for a year), we recommend further researches on this topic. We should determine its clinical importance with certain diseases, mostly with rare forms of multiple myeloma and other monoclonal gammopathies.
Keywords:serum free light chains, multiple myeloma, nephelometry, immunoglobulin, monoclonal antibodies, polyclonal antibodies


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