Myeloperoxidase ELISA Kit

Produktnummer ABIN1305167

Produktdetails Myeloperoxidase ELISA Kit

Target: Myeloperoxidase (MPO)

Reaktivität: Human

Nachweismethode: Colorimetric

Methodentyp: Sandwich ELISA

Detektionsbereich: 0.65-512 ng/mL

Untere Nachweisgrenze: 0.65 ng/mL

Applikation: ELISA

Verwendungszweck: This test kit is intended for use in the quantitative determination of human myeloperoxidase (MPO) levels in serum and EDTA-plasma samples. The test is useful for detecting elevated levels of myeloperoxidase in serum and EDTA-plasma samples, which may serve as a sensitive predictor for cardiovascular disease.

Marke: ED™

Proben: Plasma

Analytische Methode: Quantitative

Bestandteile: 1. Myeloperoxidase Antibody Coated Microplate
Two bottles each containing 30 mL of ready-to-use reagent for serum/EDTA-plasma sample dilution. The Sample Diluent must be stored at 2-8 °C and is stable until the expiration date on the kit box.

Benötigtes Material: 1. Precision single channel pipettes capable of delivering 50 µL, 100 µL, 500 µL, etc.
2. Disposable pipette tips suitable for above volume dispensing.
3. Disposable 12 x 75 mm or 13 x 100 glass tubes.
4. Disposable plastic 100 mL and 1000 mL bottle with caps.
5. Aluminum foil.
6. Deionized or distilled water.
7. Plastic microtiter well cover or polyethylene film.
8. ELISA multichannel wash bottle or automatic (semi-automatic) washing system.
9. Spectrophotometric microplate reader capable of reading absorbance at 405/650 nm.

Anwendungsinformationen

Probenmenge: 50 μL

Testdauer: 4 h

Plattentyp: Pre-coated

Protokoll: This ELISA kit is designed, developed and produced for the quantitative measurement of human myeloperoxidase in serum and EDTA-plasma samples. The assay utilizes the two-site sandwich technique with selected antibodies that bind to different epitopes of myeloperoxidase.Assay standards, controls and diluted patient samples are added directly to wells of a microtiter plate that is coated with antibody to myeloperoxidase. After an incubation period, the plate is washed and horseradish peroxidase (HRP)-conjugated human myeloperoxidase antibody is added to each well. After the second incubation period, a sandwich of "solid-phase monoclonal antibody - human myeloperoxidase HRP-conjugated antibody is formed. The unbound antibodies and buffer matrix are removed in the subsequent washing step. For the detection of this immunocomplex, the well is then incubated with a substrate solution in a timed reaction and the absorbances are then measured in a spectrophotometric microplate reader. The enzymatic activity of the immunocomplex bound to the wall of each microtiter well is directly proportional to the amount of human myeloperoxidase in the test sample. A standard curve is generated by plotting the absorbance versus the respective human myeloperoxidase concentration for each standard on a point-to-point or 4-parameter curve fitting. The concentration of human myeloperoxidase in test samples is determined directly from this standard curve.

Aufbereitung der Reagenzien:

(1) Prior to use allow all reagents to come to room temperature. Reagents from different kit lot numbers should not be combined or interchanged.
(2) ELISA Wash Concentrate must be diluted to working solution prior use. Please see REAGENTS section for details.
(3) Reconstitute assay standard by adding 2.0 mL of deminerialized water to standard vial. Separately, reconstitute controls by adding 1.0 mL of deminerialized water to control vials. Allow the standard and controls to sit undisturbed for 5 minutes, and then mix well by inversions or gentle vortexing. Make sure that all solid is dissolved completely prior to use. These reconstituted standard and controls may be stored at 2?8 C for up to 3 days or at ?10 C or below for long-term storage. Do not exceed 3 freeze-thaw cycles.
(4) Dilute the reconstituted standard concentrate 1:4 using the MPO sample diluent to obtain a level six standard by mixing the concentrated MPO standard (Cat. No. 30601) with MPO sample diluent (Cat. No. 30612). For example: mix 300 L of concentrated MPO standard with 900 L of the MPO sample diluent. Continue diluting standards down to level two as it is shown below. Level one standard is the MPO sample diluent.
(5) Place a sufficient number of myeloperoxidase antibody coated microwell strips in a holder to run human myeloperoxidase standards, controls and unknown samples in duplicate.
(6) Test Configuration
(7) Prepare Tracer Antibody working solution by 1:21 fold dilution of the Myeloperoxidase Tracer Antibody (Cat. No. 30606) by adding the tracer antibody into the Tracer Antibody Diluent (Cat. No. 30605). Following is a table that outlines the relationship of strips used and antibody mixture prepared. NOTE: the tracer antibody should be prepared just prior to the end of the first incubation cycle.

Probennahme: We strongly recommend using EDTA-plasma to measure myeloperoxidase concentration due to the different normal cut-offs between serum and plasma, as well as the higher variability of myeloperoxidase in serum. A minimum of 50 µL of human serum or EDTA-plasma is required for myeloperoxidase measurement in duplicate. No special preparation of individual is necessary prior to specimen collection. In the case of serum, whole blood should be collected and must be allowed to clot for a minimum of 30 minutes at room temperature before the serum is separated by centrifugation (850 ? 1500xg for 10 minutes). The serum should be separated from the clot within one hour of blood collection and transferred to a clean test tube. Serum or plasma samples should be stored at 2 - 8 C if the assay is to be performed within 72 hours. Otherwise, patient samples should be stored at -20 °C or below until measurement. Avoid repeated (more than three times) freezing and thawing of specimen.

Aufbereitung der Proben:

Each serum and/or plasma sample has to be diluted 1:5 using MPO Sample Diluent for dilution. For example: 50 μL of human serum or plasma diluted in 200 μL of the MPO Sample Diluent will yield a 1:5 dilution and a sufficient sample amount for myeloperoxidase measurement in duplicate.

Testdurchführung:

(1) Add 100 µL of Standards, Controls and diluted patient samples into the designated microwells.
(2) Seal the plate wells securely, cover with foil or other material to protect from light, and rotate on an ELISA plate shaker (small orbit radius) for 90 5 minutes at 400 to 450 rpm.
(3) Just prior to the end of the incubation time, dilute the proper amount of Tracer Antibody for the assay.
(4) Wash each well five times by dispensing 350 µL of working wash solution into each well and then completely aspirating the contents. Alternatively, an automated microplate washer can be used.
(5) Add 100 µL of above Tracer Antibody to each well.
(6) Seal the plate wells securely, cover with foil or other material to protect from light, and rotate on an ELISA plate shaker (small orbit radius) for 45 minutes 5 minutes at 400 to 450 rpm.
(7) Wash each well five times by dispensing 350 µL of working wash solution into each well and then completely aspirating the contents. Alternatively, an automated microplate washer can be used.
(8) Add 100 µL of ELISA HRP Substrate into each of the wells.
(9) Cover the plate with aluminum foil or other material to avoid exposure to light. Incubate plate static, at room temperature for 20 minutes.
(10) Immediately add 100 µL of ELISA Stop Solution into each of the wells. Mix gently.
(11) Read the absorbance at 405 nm with reference filter at 620 nm or 650 nm.

Ergebnisberechnung:

It is recommended to use a point-to-point or 4-parameter standard curve fitting.
1. Calculate the average absorbance for each pair of duplicate test results.
2. Subtract the average absorbance of the level 1 standard (0 ng/mL) from the average absorbance of all other readings to obtain corrected absorbance.
3. The standard curve is generated by the corrected absorbance of all standard levels on the ordinate against the standard concentration on the abscissa using point-to-point or log-log paper. Appropriate computer assisted data reduction programs may also be used for the calculation of results. The serum/plasma human myeloperoxidase concentrations for the controls and the patient samples are read directly from the standard curve using their respective corrected absorbance.

Testpräzision: The intra-assay precision was validated by measuring two sample extracts in a single assay with 12 replicate determinations.The inter-assay precision was validated by measuring two controls in duplicate in six individual assays.

Beschränkungen: Nur für Forschungszwecke einsetzbar

Handhabung

Vorsichtsmaßnahmen: The reagents must be used in a professional laboratory. Source material for reagents containing bovine serum was derived in the contiguous 48 United States. It was obtained only from healthy donor animals maintained under veterinary supervision and found free of contagious diseases. Wear gloves while performing this assay and handle these reagents as if they are potentially infectious. Avoid contact with reagents containing TMB, hydrogen peroxide, or hydrochloric acid. TMB may cause irritation to skin and mucous membranes and cause an allergic skin reaction. TMB is a suspected carcinogen. Hydrochloric acid may cause severe irritation on contact with skin. Do not get in eyes, on skin, or on clothing. Do not ingest or inhale fumes. On contact, flush with copious amounts of water for at least 15 minutes. Use Good Laboratory Practices.

Lagerung: 4 °C

Details zu Myeloperoxidase

Target: Myeloperoxidase (MPO)

Andere Bezeichnung: Myeloperoxidase (MPO Produkte)

Synonyme: mKIAA4033 ELISA Kit, MPO ELISA Kit, LOC100335032 ELISA Kit, POX2' ELISA Kit, XPOX2' ELISA Kit, mpo ELISA Kit, mpo-A ELISA Kit, pmr-1 ELISA Kit, pmr1 ELISA Kit, pox2 ELISA Kit, xpox2 ELISA Kit, myeloperoxidase ELISA Kit, myeloperoxidase L homeolog ELISA Kit, MPO ELISA Kit, Mpo ELISA Kit, LOC100335032 ELISA Kit, mpo.L ELISA Kit

Hintergrund: Myeloperoxidase (MPO) is a specific polymorphonuclear enzyme that is most abundantly expressed in neutrophil granulocytes. It functions in the oxygen-dependent killing of microorganisms and was released from primary granules of neutrophils during acute inflammation. MPO is the product of a single gene, which is about 11 kb in size, composed of 11 introns and 12 exons, and located in the long arm of chromosome 17 in segment q12-24. The mature 150 kDa MPO protein is a dimer consisting of two 15 kDa light chains and two heavy chains of variable degrees of glycosylation. MPO is related to both inflammation and oxidative stress. It is a sensitive predicator for myocardial infarction in patients presenting with chest pain. Studies have indicated that MPO is causally linked to atherosclerosis. Moreover, a combination test of MPO and CRP (C-reactive protein) provides added benefit for risk prediction of cardiovascular mortality than just measuring CRP alone. This assay utilizes a specific monoclonal antibody to capture MPO in test samples to ensure that only myeloperoxidase is detected.

Pathways: Chromatin Binding