AB255719

Human YKL-40 ELISA Kit

Recombinant
SimpleStep
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(4 Publications)

Human YKL-40 ELISA Kit is a single-wash 90-min Simplestep used to quantify Human YKL-40 with a sensitivity of 3.9 pg/ml. The assay uses a simple mix-wash-read protocol with just one incubation and one wash step.

- Colorimetric Sandwich ELISA - 450 nm readout : works on any standard plate reader
- Validated on a number of sample types including cerebrospinal fluid (CSF)
- Design your own immunoassay: we also offer the conjugation-ready antibody pair
- Cited in over 5 citations

View Alternative Names

Chitinase-3-like protein 1, 39 kDa synovial protein, Cartilage glycoprotein 39, YKL-40, CGP-39, GP-39, hCGP-39, CHI3L1

6 Images

ELISA - Human YKL-40 ELISA Kit (AB255719)

ELISA

Supplier Data

ELISA - Human YKL-40 ELISA Kit (AB255719)

sELISA

Supplier Data

Sandwich ELISA - Human YKL-40 ELISA Kit (AB255719)

Serum from ten individual healthy human female donors was measured in duplicate.

Interpolated dilution factor corrected values are plotted (mean +/- SD, n=2). The mean YKL-40 concentration was determined to be 42.74 ng/mL with a range of 16.87 – 78.32 ng/mL.

sELISA

Supplier Data

Sandwich ELISA - Human YKL-40 ELISA Kit (AB255719)

Interpolated concentrations of native YKL-40 in human serum and plasma samples.

The concentrations of YKL-40 were measured in duplicates, interpolated from the YKL-40 standard curves and corrected for sample dilution. Undiluted samples are as follows : serum 1 : 40, plasma (citrate) 1 : 20, plasma (heparin) 1 : 20, and plasma (EDTA) 1 : 80. The interpolated dilution factor corrected values are plotted (mean +/- SD, n=2). The mean YKL-40 concentration was determined to be 37.59 ng/mL in neat serum, 16.17 ng/mL in neat plasma (citrate), 18.92 in neat plasma (heparin), and 67.92 ng/mL in neat plasma (EDTA).

sELISA

Supplier Data

Sandwich ELISA - Human YKL-40 ELISA Kit (AB255719)

Interpolated concentrations of native YKL-40 in human urine, cell culture supernatant and cerebrospinal fluid (CSF) samples.

The concentrations of YKL-40 were measured in duplicates, interpolated from the YKL-40 standard curves and corrected for sample dilution. Undiluted samples are as follows : urine 100%, HepG2 cell culture supernatant 100%, U-87 MG cell culture supernatant 5%, and CSF 0.5%. The interpolated dilution factor corrected values are plotted (mean +/- SD, n=2). The mean YKL-40 concentration was determined to be 449.02 pg/mL in neat urine, 123.48 pg/mL in neat HepG2 cell culture supernatant, 18,524 pg/mL in neat U-87 MG cell culture supernatant and 145,710 pg/mL in neat CSF.

sELISA

Unknown

Sandwich ELISA - Human YKL-40 ELISA Kit (AB255719)

Human YKL-40 standard curve comparison.

Standard Curve comparison between human YKL-40 SimpleStep ELISA kit and traditional ELISA kit from leading competitor. SimpleStep ELISA kit shows increased sensitivity.

sELISA

Supplier Data

Sandwich ELISA - Human YKL-40 ELISA Kit (AB255719)

Example of human YKL-40 standard curve in Sample Diluent NS.

The YKL-40 standard curve was prepared as described in Section 10. Raw data values are shown in the table. Background-subtracted data values (mean +/- SD) are graphed.

Key facts

Detection method

Colorimetric

Sample types

Cerebral Spinal Fluid, Urine, Heparin Plasma, Citrate plasma, Cell culture supernatant, Serum, EDTA Plasma

Reacts with

Human, Rhesus monkey

Assay type

Sandwich (quantitative)

Sensitivity

= 3.9 pg/mL

Range

23.44 - 1500 pg/mL

Assay time

1h 30m

Assay Platform

Pre-coated microplate (12 x 8 well strips)

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Reactivity data

{ "title": "Reactivity Data", "filters": { "stats": ["", "Reactivity", "Dilution Info", "Notes"] }, "values": { "sELISA": { "reactivity":"TESTED_AND_REACTS", "dilution-info":"", "notes":"<p></p>" } } }

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Precision

[ { "reproducibilityType": "Inter", "sample": "Serum", "replicates": 3, "mean": null, "standardDeviation": null, "coefficientOfVariability": "1.7" }, { "reproducibilityType": "Intra", "sample": "Serum", "replicates": 8, "mean": null, "standardDeviation": null, "coefficientOfVariability": "2.4" } ]

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Recovery

[ { "sample": "Cell culture supernatant", "range": "100 - 107 %", "average": "= 103" }, { "sample": "Serum", "range": "101 - 122 %", "average": "= 110" }, { "sample": "EDTA Plasma", "range": "113 - 124 %", "average": "= 118" }, { "sample": "Cerebral Spinal Fluid", "range": "101 - 110 %", "average": "= 105" }, { "sample": "Urine", "range": "98 - 109 %", "average": "= 102" }, { "sample": "Heparin Plasma", "range": "103 - 118 %", "average": "= 108" }, { "sample": "Citrate plasma", "range": "113 - 123 %", "average": "= 116" } ]

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What's included?

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Properties and storage information

YKL-40 also known as chitinase-3-like protein 1 (CHI3L1) is a glycoprotein with a molecular weight of approximately 40 kDa. Scientists often study it for its roles in inflammatory processes. It has expressions in numerous tissues including liver cartilage and the central nervous system. The CHI3L1 protein does not possess chitinase activity unlike other members of the chitinase family yet it interacts with various ligands to influence cellular behavior.

Biological function summary

YKL-40 plays significant roles in tissue remodeling and inflammation. It does not form part of a larger complex by itself but influences several cellular processes. This protein affects cell proliferation migration and survival making it involved in both normal physiological processes and pathological conditions. CHI3L1 also exhibits a connection to the immune response where it modulates macrophage activity and interacts with other immune cells.

Pathways

YKL-40 is integral to the inflammatory and extracellular matrix pathways. It associates with proteins such as interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-?) influencing signaling cascades that modulate inflammation. Through these interactions CHI3L1 becomes a mediator of connective tissue metabolism and immune reactions in various pathophysiological states.

YKL-40 shows strong links to conditions like osteoarthritis and certain cancers. In osteoarthritis elevated levels of CHI3L1 reflect increased cartilage degradation while in oncology it correlates with tumor angiogenesis and metastasis potential. Its connection with proteins such as matrix metalloproteinases highlights its role in disease mechanisms highlighting its potential as a biomarker for early detection and disease progression monitoring.

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Product protocols

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Target data

Carbohydrate-binding lectin with a preference for chitin. Has no chitinase activity. May play a role in tissue remodeling and in the capacity of cells to respond to and cope with changes in their environment. Plays a role in T-helper cell type 2 (Th2) inflammatory response and IL-13-induced inflammation, regulating allergen sensitization, inflammatory cell apoptosis, dendritic cell accumulation and M2 macrophage differentiation. Facilitates invasion of pathogenic enteric bacteria into colonic mucosa and lymphoid organs. Mediates activation of AKT1 signaling pathway and subsequent IL8 production in colonic epithelial cells. Regulates antibacterial responses in lung by contributing to macrophage bacterial killing, controlling bacterial dissemination and augmenting host tolerance. Also regulates hyperoxia-induced injury, inflammation and epithelial apoptosis in lung.

See full target information CHI3L1

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Publications (4)

Recent publications for all applications. Explore the full list and refine your search

Aging 15:1199-1209 PubMed36880855

2023

Prognostic performance of serum YKL-40 for one-year clinical outcomes in acute ischemic stroke.

Applications

Unspecified application

Species

Unspecified reactive species

Guomei Shi,Minghao Li,Yan E,Meng Wang,Pengyu Gong,Xiaorong Wang,Jingye Lu,Weixiang Wu,Shouru Xue,Junshan Zhou,Rujuan Zhou

Journal of inflammation research 16:311-319 PubMed36721527

2023

Serum YKL-40 Levels and White Matter Hyperintensities in Patients with Acute Ischemic Stroke.

Applications

Unspecified application

Species

Unspecified reactive species

Guomei Shi,Dongdong Ke,Pengyu Gong,Peng Yu,Junshan Zhou,Meng Wang,Xiaohao Zhang,Xiaorong Wang,Minwang Guo,Mingyang Xu,Rujuan Zhou

Brain, behavior, & immunity - health 26:100555 PubMed36457825

2022

Conserved YKL-40 changes in mice and humans after postoperative delirium.

Applications

Unspecified application

Species

Unspecified reactive species

Jennifer David-Bercholz,Leah Acker,Ana I Caceres,Pau Yen Wu,Saanvi Goenka,Nathan O Franklin,Ramona M Rodriguiz,William C Wetsel,Michael Devinney,Mary Cooter Wright,Henrik Zetterberg,Ting Yang,Miles Berger,Niccolò Terrando

Journal of inflammation research 14:4361-4369 PubMed34511972

2021

The Relationship Between Serum YKL-40 Levels on Admission and Stroke-Associated Pneumonia in Patients with Acute Ischemic Stroke.

Applications

Unspecified application

Species

Unspecified reactive species

Guomei Shi,Wenxiu Chen,Pengyu Gong,Meng Wang,Junshan Zhou,Xiaorong Wang,Minwang Guo,Jingye Lu,Yan Li,Hongxuan Feng,Xuetao Fu,Rujuan Zhou,Shouru Xue

View all publications

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Product promise

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