NAMPT ELISA 试剂盒 (Nicotinamide phosphoribosyltransferase)

Details for Product NAMPT ELISA Kit No. ABIN2506976, 供应商: Log in to see
  • 1110035O14Rik
  • PBEF
  • PBEF1
  • VF
  • AI314458
  • AI480535
  • NAmPRTase
  • Pbef
  • Pbef1
  • Visfatin
  • visfatin
  • pbef
  • pbef1
  • nicotinamide phosphoribosyltransferase
  • Nicotinamide phosphoribosyltransferase
  • nicotinamide phosphoribosyltransferase S homeolog
  • Nampt
  • nampt
  • Smon_0680
  • Mrub_2845
  • Cseg_3704
  • BC1002_3997
  • Ftrac_2686
  • Varpa_5681
  • Celal_3900
  • Deima_0880
  • BC1001_3724
  • Celly_1696
  • Clole_1542
  • Tsp_05934
  • nampt.S

Kits with alternative reactivity to:
Competition ELISA
9.8-40000 pg/mL
9.8 pg/mL
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原理 The kit is a competitive enzyme immunoassay for the in vitro quantitative measurement of Visfatin in human serum, plasma, and other biological fluids not being tested
品牌 EasyTest™
样品类型 Serum, Plasma
Analytical Method Quantitative
检测方法 Colorimetric
特异性 This assay has high sensitivity and excellent specificity for detection of human Visfatin.
灵敏度 130 pg/mL
产品特性 EasyTest Competitive ELISA is a simple and rapid technology for the quantitation of antigen in a range of sample matrices. The whole process takes 2.5 hours with high accuracy and precision.
  • Assay plate (12x8 coated Microwells)-1
  • Primary antibody-2x 6μL
  • Standard peptide -2x 10μL
  • Biotinylated peptide-2x 10μL
  • HRP-Streptavidin concentrate-1x 60μL
  • Assay diluent (5x concentrate)-1 x15mL
  • Wash buffer (20x concentrate)-1x 25 mL
  • TMB substrate-1x12 mL
  • Stop solution-1x8 mL
  • Adhensive strip-2
  • Instruction manual-1.
试剂未包括 1. Distilled or deionized water, 2.Precision pipettes, with disposable plastic tips, 3.Beakers, flasks, cylinders necessary for preparation of reagents, 4.Microplate washing device (multichannel pipette or automated microplate washer), 5.Microplate shaker, 6.Microplate reader capable of reading at 450 nm.
别名 Visfatin (NAMPT ELISA Kit 摘要)
背景 Visfatin (also known as PBEF and Namp) is an enzyme that in humans is encoded by the PBEF1 gene. This protein has also been reported to be a cytokine (PBEF) that promotes B cell maturation and inhibits neutrophil apoptosis. It is downregulated by an increase of miR-34a in obesity via a 3'UTR functional binding site of NAMPT mRNA resulting in a reduction of NAD (+) and decreased SIRT1 activity.
分子量 55 kDa
基因ID 10135
NCBI登录号 NP_005737
UniProt P43490
应用备注 Optimal working dilution should be determined by the investigator.
样本量 50 μL
实验时间 2.5 h
板类型 Pre-coated
实验流程 The immunoplate in this kit is pre-coated with secondary antibody and the nonspecific binding sites are blocked. The secondary antibody can bind to the Fc fragment of the visfatin antibody whose Fab fragment will be competitively bound by both biotinylated Visfatin peptide and peptide standard or targeted peptide in samples. The biotinylated Visfatin peptide interacts with streptavidin-horseradish peroxidase (SA-HRP) which catalyzes TMB substrate solution. The intensity of the yellow is directly proportional to the amount of biotinylated Visfatin peptide SA-HRP complex but inversely proportional to the amount of the peptide in standard solutions or samples. A standard curve of known Visfatin concentration can be established accordingly. The unknown Visfatin concentration in samples can be determined by extrapolation to this standard curve.
  1. Assay diluent: Dilute the concentrated assay diluent 1:5 with distilled water (e.g. 10 mL plus 40 mL). 2. Wash buffer: Dilute the concentrated wash buffer 1:20 with distilled water (e.g. 20 mL plus 380 mL). 3.Anti-Visfatin Antibody: Briefly centrifuge the vial before use. Add 1494 μL of 1x assay diluent to the vial, mix thoroughly. 4. Standard peptide: Briefly spin standard vial before use. Add 490 μL 1x Assay Diluent to prepare a 40 ng/mL standard, gently vortex to mix, this is standard #1. Label 5 tubes #2 through #6. Pipette 150 μL 1x assay diluent into tube #2, 300 μL 1x assay buffer into tube #3, 700 μL 1x assay diluent into tubes #4 through #6. Take 150 μL from standard #1 and add to tube #2, Mix thoroughly. Add 100 μL from tube #2 to tube #3, Mix thoroughly. Continue this for tubes #4 through #6. 5.Biotinylated peptide: Briefly centrifuge the vial before use. Add 1490 μL of 1x assay diluent to make the final concentration enough for 60 wells. 6. Streptavidin-HRP: The HRP-Streptavidin concentrate should be diluted 200- fold with 1x assay diluent.
样品收集 Serum: Use a serum separator tube (SST) and allow samples to clot for two hours at room temperature or overnight at 4 °C before centrifugation for 15 minutes at 1000 x g. Remove serum and assay immediately or aliquot and store samples at -20 °C or -80 °C. Avoid repeated freeze-thaw cycles.
Plasma: Collect plasma using EDTA, or citrate or heparin as an anticoagulant. Centrifuge for 15 minutes at 1000 x g at 2-8 °C within 30 minutes of collection. Assay immediately or aliquot and store samples at -20 °C or -80 °C. Avoid repeated freeze-thaw cycles.

Levels of the target protein may vary among different specimens. Optimal dilution factors for each sample must be determined by the investigator,The dilution scheme is only suggestion: the recommended dilution for serum and plasma is 1:2.

  1. All reagents must be brought to room temperature (18-25 °C) prior to use 2. Prepare all reagents, primary anytibody, standard peptide, biotinylated peptide and samples as directed in the respective sections. 3.Determine the number of wells to be used and put any remaining wells and the desiccant back into the pouch and seal the ziploc, store unused wells at 4 °C. 4. Pipette 25 μL of anti-Visfatin antibody into all wells, 75 μL of 1x assay diluent into the blank wells, 50 μL of 1x assay diluent into the Bo (0 ng/mL standard) wells, 50 μL of Standards or samples to the appropriate wells ,then pipette 25 μL of biotinylated peptide into each well except the Blank wells, cover the plate with adhensive strip. Incubate for 1.5 hours at room temperature with gentle shaking. 5.Decant or aspirate contents of wells. Wash wells by filling with at least 300 μL/well prepared wash buffer followed by decanting/aspirating. Soak wells in wash buffer for 30 seconds to 1 minute for each wash. Repeat wash 3 times for a total of 4 washes. After the last wash, blot plate on absorbent paper to remove residual buffer. Thorough washing at this step is very important, complete removal of liquid is required for proper performance. 6.Pipette 100 μL of diluted streptavidin-HRP solution to each well, Seal the plate, ncubate for 45 min at room temperature with gentle shaking. 7. wash plate as step 5. 8. Pipette 100 μL of TMB Substrate Solution to each well. Incubate plate for 15 minutes at room temperature in the dark with gentle shaking. 9. Add 50μL of Stop Solution to each well, gently tap the plate to ensure thorough mixing. 10. Determine the optical density of each well within 15 minutes using a microplate reader set to 450nm. If wavelength correction is available, set to 570nm. Subtract readings at 570nm from the readings at 450nm. This subtraction will correct for optical imperfections in the plate.
  1. Average the duplicate readings for each standard and sample and subtract the average blank optical density. 2.Plot the standard curve using SigmaPlot software (or other software which can perform four-parameter logistic regression models), with standard concentration on the x-axis and percentage of absorbance (see calculation below) on the y-axis. Draw the best-fit curve through the standard points. Percentage absorbance = (B - blank OD)/ (B o - blank OD) *100 Where B = OD of sample or standard and Bo = OD of zero standard (total binding). 3. If samples have been diluted, the concentration read from the standard curve must be multiplied by the dilution factor.
实验精密度 intra CV<10%, inter CV <15%
限制 仅限研究用
缓冲液 0.05 % Proclin 300
储存液 ProClin
注意事项 The Stop Solution provided with this kit is an acid solution. Wear eye, hand, face and clothing protection when using this material.
储存条件 4 °C/-20 °C
ELISA image for Nicotinamide phosphoribosyltransferase (NAMPT) ELISA Kit (ABIN2506976) Nicotinamide phosphoribosyltransferase (NAMPT) ELISA Kit