Posterske teme Poster topics - Biochemia Medica
Posterske teme Poster topics - Biochemia Medica
Posterske teme Poster topics - Biochemia Medica
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P17-6 Imunologija<br />
serumima dobivene su vrijednosti kod nefelometrijskog<br />
određivanja za IgG 6,4%, IgA 1,9%, IgM 1,24%, a kod imunoturbidimetrijskog<br />
određivanja za IgG 4,3%, IgA 1,3%,<br />
IgM 2,9%. Usporedbom rezultata dobivenih na nefelometru<br />
i biokemijskom analizatoru dobiveni su koefi cijenti korelacije<br />
za IgG r=0,9882; za IgA r=0,9953; za IgM r=0,9933.<br />
Određivanjem imunoglobulina imunonefelometrijski i<br />
imunoturbidimetrijski dobili smo rezultate koji su usporedivi<br />
i ukazuju da su obje metode prihvatljive za rutinski<br />
rad.<br />
E-mail: bmladina@net.hr<br />
P17-7<br />
Dokazivanje plazmatskih proupalnih<br />
citokina i čimbenika rasta na mikročipu<br />
Predragović T 1 , Kozmar A 1 , Benjak V 2 , Jadranka S 3 , Malenica B 1<br />
1 Zavod za imunologiju, Klinički zavod za laboratorijsku dijagnostiku,<br />
Klinički bolnički centar Zagreb, Zagreb, Hrvatska<br />
2 Klinika za pedijatriju, Klinički bolnički centar Zagreb, Zagreb, Hrvatska<br />
3 Centar za genomiku, Klinički zavod za laboratorijsku dijagnostiku,<br />
Klinički bolnički centar Zagreb, Zagreb, Hrvatska<br />
Citokini su važni biološki čimbenici u regulaciji imunoreaktivnosti<br />
i patofi ziologiji raznih infektivnih bolesti, te<br />
bolesti uzrokovanih upalom, poremećajem staničnog rasta<br />
i stvaranja novih krvnih žila. Mjerenjem pojedinačnih<br />
citokina enzimoimunotestom (ELISA) opažena je povišena<br />
koncentracija različitih proupalnih citokina u plazmi<br />
bolesnika s teškim infekcijama, autoimunim bolestima i<br />
nekim karcinomima. Otuda i zanimanje za ispitivanje moguće<br />
dijagnostičke i prognostičke vrijednosti proupalnih<br />
citokina u raznim bolestima. Nove tehnologije, kao što su<br />
mikrokuglice ili mikročipovi s monoklonskim antitijelima<br />
specifi čnim za razne citokine, omogućuju istodobno dokazivanje<br />
više različitih citokina u istom uzorku plazme.<br />
U istraživanju smo rabili mikročip s dvanaest različitih citokina<br />
i čimbenika rasta. Koncentraciju citokina u plazmi<br />
odredili smo u 11 novorođenčadi s različitim bakterijskim<br />
infekcijama, 7 novorođenčadi s raznim urođenim grješkama<br />
bez popratne infekcije, te u 7 odraslih bolesnika s<br />
raznim histološkim tipovima i lokalizacijama karcinoma.<br />
Razinu proupalnih citokina odredili smo mikročipom koji<br />
omogućuje istodobno mjerenje IL-2, IL-4, IL-6, IL-8, IL-10,<br />
VEGF, IFN-gama, TNF-alfa, IL-1 alfa, IL-1 beta, MCP-1 i EGF.<br />
Koncentracija kemokina IL-8 i MCP-1 povišena je u svih ispitanika.<br />
Povišena je i koncentracija IL-6 i TNF-alfa u 75%<br />
by immunoturbidimetric determination were IgG 4.4%,<br />
IgA 4.2% and IgM 5.1%. Determination of inaccuracy with<br />
control serum by immunonephelometric method yielded<br />
the following values: IgG 6.4%, IgA 1.9% and IgM 1.24%,<br />
and with immunoturbidimetric method IgG 4.3%, IgA<br />
1.3% and IgM 2.9%. Comparison of the results obtained<br />
by these two analyses (nephelometer and biochemistry<br />
analyzer) produced the following correlation coeffi cients:<br />
IgG r=0.9882, IgA r=0.9953 and IgM r=0.9933. The results<br />
obtained by immunonephelometric and immunoturbidimetric<br />
assays show that both methods are comparable<br />
and acceptable for routine work.<br />
E-mail: bmladina@net.hr<br />
P17-7<br />
Immunology<br />
Detection of plasma proinfl ammatory<br />
cytokines and growth factors by biochip array<br />
Predragović T 1 , Kozmar A 1 , Benjak V 2 , Jadranka S 3 , Malenica B 1<br />
1Laboratory of Immunology, Clinical Institute of Laboratory Diagnosis,<br />
Zagreb University Hospital Center, Zagreb, Croatia<br />
2University Department of Pediatrics, Zagreb University Hospital Center,<br />
Zagreb, Croatia<br />
3Laboratory of Genomics, Clinical Institute of Laboratory Diagnosis,<br />
Zagreb University Hospital Center, Zagreb, Croatia<br />
Cytokines are major biologic factors in the modulation of<br />
immune responses and in the pathophysiology of various<br />
infections and diseases related to infl ammation, growth<br />
deregulation and vascular remodeling. Determination of<br />
a single cytokine by ELISA has shown elevated concentrations<br />
of various proinfl ammatory cytokines in plasma of<br />
patients with serious infections, autoimmune diseases<br />
and cancer. These data motivated further investigations<br />
to determine the possible diagnostic and prognostic<br />
value of proinfl ammatory cytokine measurement. New<br />
technologies such as microbeads or biochip array platform<br />
with monoclonals specifi c for various cytokines allow<br />
for simultaneous detection of multiple cytokines in<br />
the same plasma sample. In this study, we used a biochip<br />
array platform for proinfl ammatory cytokine determination<br />
in the plasma of newborn infants and adults with<br />
cancer. Plasma cytokine levels were determined in 11<br />
newborns with various bacterial infections, 7 infants<br />
without infection, and 7 adults with diff erent histologic<br />
types and localization of cancer. Plasma cytokine levels<br />
were evaluated by biochip array for simultaneous detection<br />
of IL-2, IL-4, IL-6, IL-8, IL-10, VEGF, IFN-gamma, TNFalfa,<br />
IL-1 alfa, IL-1 beta, MCP-1 and EGF. Plasma levels of<br />
IL-8 and MCP-1 chemokines were elevated in all patients.<br />
<strong>Biochemia</strong> <strong>Medica</strong> 2006;16(Suppl 1):S1–S268<br />
S195