Monkey CTX-1 ELISA Kit (Colorimetric)

ELISA: Monkey CTX-1 ELISA Kit (Colorimetric) [NBP2-69075] - Samples were spiked with high concentrations of Monkey CTX-1 and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.

ELISA: Monkey CTX-1 ELISA Kit (Colorimetric) [NBP2-69075] - Standard Curve Reference

• Reactivity: Pm
• Applications: ELISA
• Suitable Sample Type: Serum, plasma and other biological fluids
• Standard Curve Range: 0.16 - 10 ng/mL
• Sensitivity: 0.09 ng/mL

Monkey CTX-1 ELISA Kit (Colorimetric) Summary

• Specificity: This kit recognizes Monkey CTX1 in samples. No significant cross-reactivity or interference between Monkey CTX1 and analogues was observed.
• Standard Curve Range: 0.16 - 10 ng/mL
• Sensitivity: 0.09 ng/mL
• Assay Type: Sandwich-ELISA
• Inter-Assay: CV% < 5.58%
• Intra-Assay: CV% < 4.87%
• Spike Recovery: 85-105%
• Sample Volume: 100 uL
• Kit Type: ELISA Kit (Colorimetric)

Applications/Dilutions

• Dilutions:
  • ELISA

Packaging, Storage & Formulations

• Storage: Storage of components varies. See protocol for specific instructions.

Alternate Names for Monkey CTX-1 ELISA Kit (Colorimetric)

• Collagen Type 1 C-Telopeptide
• Cross Linked C-telopeptide of Type I Collagen
• CTX
• CTXI

Background

CTX-1, also referred to as either carboxy-terminal cross-linked telopeptide of type 1 collagen or C-terminal end of the telopeptide of type I collagen, is a marker of osteoporosis and bone resorption (1,2). CTX-1 is a common bone turnover marker (BTM) that can easily be measured in the plasma, serum, or urine (1-3). Bone turnover refers to the removal of old bones by resorption followed by generation of new bones (3). CTX-1 is released from intact collagen type 1 by cathepsin K cleavage and can be detected by an antibody against the eight amino acid sequence EKAHDGGR (2,4). Levels of CTX-1 show circadian rhythm variabilities altered by food intake, which makes timing of sample collection an important consideration and is typically done in a fasted state (1,3). Studies show that increased levels of CTX-1 along with bone-specific alkaline phosphatase (BSALP) is associated with increased risk for bone fractures and osteoporosis (3). The most common treatment for osteoporosis is bisphosphonates, which are classified as anti-resorptive drugs that slow the removal of bone (1,3). Another treatment is the Denosumab, a monoclonal antibody for receptor activator of NFkappaB ligand, which shows decreased levels of CTX-1 and other markers within the first 24-hours of treatment (1-3). Conversely, anabolic therapies add bone by focusing on the osteoclast and osteoblast populations. Romosozumab is one specific anabolic drug that showed quick decrease in CTX-1 levels following treatment (2,3).

References

1. Williams, C., & Sapra, A. (2020). Osteoporosis Markers. In StatPearls. StatPearls Publishing.

2. Szulc P. (2018). Bone turnover: Biology and assessment tools. Best Practice & Research. Clinical Endocrinology & Metabolism. https://doi.org/10.1016/j.beem.2018.05.003

3. Park, S. Y., Ahn, S. H., Yoo, J. I., Chung, Y. J., Jeon, Y. K., Yoon, B. H., Kim, H. Y., Lee, S. H., Lee, J., & Hong, S. (2019). Position Statement on the Use of Bone Turnover Markers for Osteoporosis Treatment. Journal of Bone Metabolism. https://doi.org/10.11005/jbm.2019.26.4.213

4. Cremers, C., Garnero, P., Seibel, M. J. (2008). Chapter 87- Biochemical Markers of Bone Metabolism. Principles of Bone Biology (Third Edition). https://doi.org/10.1016/B978-0-12-373884-4.00020-3.

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. ELISA Kits are guaranteed for 6 months from date of receipt.

Publications for CTX-1 ELISA Kit (NBP2-69075)(1)

Publication using NBP2-69075

• Thomas J, Rao J, John F et al. Phytoestrogenic effect of fenugreek seed extract helps in ameliorating the leg pain and vasomotor symptoms in postmenopausal women: A randomized, double-blinded, placebo-controlled study PharmaNutrition 2020-07-01

FAQs for CTX-1 ELISA Kit (NBP2-69075). (Showing 1 - 1 of 1 FAQ).

1. What is the difference between the Quantikine and Duoset ELISA kits?
   • Our Quantikine kits are fully optimized and validated for the sample types listed on the product specific webpage and datasheet, as this can vary between kits. Each kit is supplied ready to use with one pre-coated 96-well plate, a detection antibody directly conjugated to HRP, and all other necessary reagents. These kits are ideal for researchers who want the convenience of a ready to use and optimized ELISA product. Some of these kits are also available prepackaged in larger 6 and 50 plate sizes.Our DuoSet Kits, in contrast, are ELISA development kits containing the capture and detection antibody, the mass-value calibrated standard, and streptavidin-HRP to prepare approximately 5 or 15 plates. Ancillary reagents will need to be used/purchased, and for most kits, we will recommend one of our Ancillary Reagent Kits, which contain the reagents we use ourselves in-house. DuoSet kits are validated only for cell culture supernatant samples and therefore require further development and validation for accurate measurement in more complex samples such as serum and plasma. Our DuoSet Kits offer an economical, flexible alternative for the experienced ELISA user.