Multiplex Assay Kit for D-Amino Acid Oxidase (DAO) ,etc. by FLIA (Flow Luminescence Immunoassay)

DAMOX

(Note: Up to 8-plex in one testing reaction)

Specificity

This assay has high sensitivity and excellent specificity for detection of D-Amino Acid Oxidase (DAO) ,etc. by FLIA (Flow Luminescence Immunoassay).
No significant cross-reactivity or interference between D-Amino Acid Oxidase (DAO) ,etc. by FLIA (Flow Luminescence Immunoassay) and analogues was observed.

Recovery

Matrices listed below were spiked with certain level of recombinant D-Amino Acid Oxidase (DAO) ,etc. by FLIA (Flow Luminescence Immunoassay) and the recovery rates were calculated by comparing the measured value to the expected amount of D-Amino Acid Oxidase (DAO) ,etc. by FLIA (Flow Luminescence Immunoassay) in samples.

Matrix Recovery range (%) Average(%)
serum(n=5) 78-101 92
EDTA plasma(n=5) 91-99 94
heparin plasma(n=5) 91-99 96
sodium citrate plasma(n=5) 81-91 87

Precision

Intra-assay Precision (Precision within an assay): 3 samples with low, middle and high level D-Amino Acid Oxidase (DAO) ,etc. by FLIA (Flow Luminescence Immunoassay) were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, middle and high level D-Amino Acid Oxidase (DAO) ,etc. by FLIA (Flow Luminescence Immunoassay) were tested on 3 different plates, 8 replicates in each plate.
CV(%) = SD/meanX100
Intra-Assay: CV<10%
Inter-Assay: CV<12%

Linearity

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of D-Amino Acid Oxidase (DAO) ,etc. by FLIA (Flow Luminescence Immunoassay) and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.

Sample 1:2 1:4 1:8 1:16
serum(n=5) 94-105% 79-95% 95-103% 86-98%
EDTA plasma(n=5) 88-103% 78-101% 78-104% 88-99%
heparin plasma(n=5) 84-95% 87-101% 88-97% 80-89%
sodium citrate plasma(n=5) 88-104% 84-105% 80-101% 78-103%

Stability

The stability of kit is determined by the loss rate of activity. The loss rate of this kit is less than 5% within the expiration date under appropriate storage condition.
To minimize extra influence on the performance, operation procedures and lab conditions, especially room temperature, air humidity, incubator temperature should be strictly controlled. It is also strongly suggested that the whole assay is performed by the same operator from the beginning to the end.

Reagents and materials provided

Reagents Quantity Reagents Quantity
96-well plate 1 Plate sealer for 96 wells 4
Pre-Mixed Standard 2 Standard Diluent 1×20mL
Pre-Mixed Magnetic beads (22#:DAO) 1 Analysis buffer 1×20mL
Pre-Mixed Detection Reagent A 1×120μL Assay Diluent A 1×12mL
Detection Reagent B (PE-SA) 1×120μL Assay Diluent B 1×12mL
Sheath Fluid 1×10mL Wash Buffer (30 × concentrate) 1×20mL
Instruction manual 1

Assay procedure summary

1. Preparation of standards, reagents and samples before the experiment;
2. Add 100μL standard or sample to each well,
    add 10μL magnetic beads, and incubate 90min at 37°C on shaker;
3. Remove liquid on magnetic frame, add 100μL prepared Detection Reagent A. Incubate 60min at 37°C on shaker;
4. Wash plate on magnetic frame for three times;
5. Add 100μL prepared Detection Reagent B, and incubate 30 min at 37°C on shaker;
6. Wash plate on magnetic frame for three times;
7. Add 100μL sheath solution, swirl for 2 minutes, read on the machine.

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Magazine Citations
Differential regulation of D-amino acid oxidase (DAO) mRNA and protein expression in human post-mortem brain Dam: Jcr:3107E495-Ef68-4692-85Be-D43D9F3F84Ff
不确定杂志名 Age span expression of schizophrenia susceptibility genes D-amino acid oxidase (DAO) and DAO activator (DAOA) in human post-mortem brain dam:jcr:c3394762-a692-4fbd-8a37-7da14f429996
Frontiers in Neuroanatomy Expression of D-Amino Acid Oxidase (DAO/DAAO) and D-Amino Acid Oxidase Activator (DAOA/G72) during Development and Aging in the Human Post-mortem Brain. pubmed:28428746
BMC gastroenterology Noninvasive biomarkers of gut barrier function identify two subtypes of patients suffering from diarrhoea predominant-IBS: a case-control study Pubmed: 30400824
Journal of Gastroenterology Gut microbiota dysbiosis worsens the severity of acute pancreatitis in patients and mice Pubmed: 30519748
Phytotherapy Research Effect of a chamomile extract in protecting against radiation‐induced intestinal mucositis Pubmed: 30632234
Biological & Pharmaceutical Bulletin Role of Aquaporin-3 in Intestinal Injury Induced by Sepsis Pubmed: 31582652
Int Immunopharmacol Hydrogen attenuates radiation-induced intestinal damage by reducing oxidative stress and inflammatory response Pubmed: 32361189
european journal of clinical nutrition? Effect of Lactobacillus casei on lipid metabolism and intestinal microflora in patients with alcoholic liver injury 33514869
Nutrients The Relationship between Low Serum Vitamin D Levels and Altered Intestinal Barrier Function in Patients with IBS Diarrhoea Undergoing a Long-Term Low-FODMAP 33801020
J Cell Mol Med The ¦Á2AR/Caveolin©\1/p38MAPK/NF©\¦ÊB axis explains dexmedetomidine protection against lung injury following intestinal ischaemia©\reperfusion 34114328
BMC Gastroenterol Somatization in patients with predominant diarrhoea irritable bowel syndrome: the role of the intestinal barrier function and integrity 34022802
Nutrients Psychological and Gastrointestinal Symptoms of Patients with Irritable Bowel Syndrome Undergoing a Low-FODMAP Diet: The Role of the Intestinal Barrier 34371976
Int J Neuropsychopharmacol Blood D-amino acid oxidase (DAO) levels increased with cognitive decline among people with mild cognitive impairment (MCI): a two-year prospective study Pubmed:35430632
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