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Human il 18 platinum elisa

Manufactured by Thermo Fisher Scientific
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The Human IL-18 Platinum ELISA is a quantitative sandwich enzyme-linked immunosorbent assay (ELISA) designed for the measurement of human interleukin-18 (IL-18) in serum, plasma, and cell culture supernatants.

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7 protocols using human il 18 platinum elisa

1

Quantifying IL-18 and IL-18BP in Plasma

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IL-18 and IL-18BP plasma levels were measured using ELISA kits (mouse IL-18 Platinum ELISA, BMS618/2, human IL-18 Platinum ELISA, BMS267/2CE; eBioscience and human IL-18BP ELISA Kit, ab100559; Abcam, Paris, France) following the manufacturer's instructions. Free IL-18 levels were calculated using IL-18 and IL-18BP levels as shown in Novick et al, (2001 (link)).
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2

Quantification of Inflammatory Cytokines

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Human IL-18, IL-1β, and TNF-α were measured with the Human IL-18 Platinum ELISA, Human IL-1β ELISA and Human TNF-α ELISA Ready-SET-Go kits respectively (eBiosciences, San Diego CA) using 50 µL of plasma or 100 µL of culture supernatant. Each sample was tested in duplicate. Data was acquired using a SpectaMax M5 (Molecular Devices, Sunnyvale CA). The LLOD of IL-18 was 40 pg/mL in plasma and 18 pg/mL in culture supernatant.
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3

Urinary Biomarkers for Acute Kidney Injury

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Clean-catch midstream urine specimens were collected from patients in each group at the time of admission and were collected again 48 h after admission. Patients with compromised mental status were given an indwelling catheter to obtain clean urine. After centrifugation for 5 min at 3,000 rpm, the supernatant was transferred into Eppendorf tubes and stored in a freezer at −80 °C. Urine specimens for the control group were also collected and stored at −80 °C.
Urinary KIM-1 and IL-18 levels were measured by enzyme-linked immunosorbent assay (ELISA) (Human TIM-1/KIM-1/HAVCR Quantikine ELISA Kit, R&D Systems, Minneapolis, MNUSA; Human IL-18 Platinum ELISA, eBioscience, Inc, San Diego, CA, USA). Optical density was read at 450 nm (Model 450 Microplate Reader; Bio-Rad Laboratories, Inc., Hercules, CA, USA), and the test-sample concentrations were calculated using a standard curve.
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4

Quantifying IL-18 in Plasma and PBMC

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IL-18 was quantified in human plasma samples and in supernatants from E. coli-stimulated PBMC using the Human IL-18 Platinum ELISA (eBioscience, San Diego, CA).
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5

Cytokine Quantification by ELISA

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The concentration of IL-18 and IL-1β in cell supernatants was determined by ELISA using commercial quantitative kits according to the manufacturer’s instructions (#VAL101, Valukine™ ELISA Kit for human IL-1β; R&D, USA) (#BMS267-2, Human IL-1 8 Platinum ELISA; eBioscience, USA). All samples were analyzed in duplicate. Standard curves were generated during assays by plotting absorbance value against the gradient concentration of the standards provided with the kits. Both positive and blank controls were analyzed simultaneously on the same plate.
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6

ELISA Measurements of Kidney Biomarkers

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We used commercially available enzyme-linked immunosorbent assay kits to measure concentrations of serum and urinary monomeric SNGAL and uNGAL (Human NGAL ELISA Kit, Catalog Number: KIT 036CE, BioPorto Diagnostic, Hellerup, Denmark), uKIM-1 (Human KIM-1 ELISA Test Kit, Catalog Number: H-RENA-E-001, BioAssay Works, Tyler CT, Ijamsville, MD, USA), and uIL-18 (Human IL-18 Platinum ELISA, Catalog Number: BMS267/2CE, Affymetrix, Santa Clara, CA, USA), with intra-assay and inter-assay coefficients of variability: 10.5% and 7.5% for NGAL, <10% and <10% for KIM-1, and 6.5% and 8.1% for IL-18, respectively. All measurements were performed in the laboratory of the Department of Pathophysiology, Medical Faculty in Katowice, Medical University of Silesia in Katowice. Quality control was assessed based on repeated measurements and is reported as average deviation (4.4% for NGAL; 7.1% for KIM-1, and 8.7% for IL-18).
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7

Cytokine Profiling in Serum

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IL-1 receptor antagonist (IL-1ra) and IL-8 levels in serum were measured by kinetic sandwich ELISA (Peprotech, Rocky Hill, NJ, USA). Serum levels of IL-1β, IL-6 and IL-10 were measured using Cytometric Bead Array (CBA) (BD Biosciences, San Jose, CA). IL-18 serum levels were measured using Human IL-18 Platinum ELISA (Affymetrix/eBioscience/ThermoFisher Scientific); IL-18 Binding Protein (BP) was measured using IL-18BP ELISA from Abcam (Cambridge, MA).
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