Ⅱ型膠原交聯(lián)羧基端肽(CTXII)檢測試劑盒(酶聯(lián)免疫吸附試驗法)
ELISA Kit for Cross Linked C-Telopeptide Of Type II Collagen (CTXII)
CTX-II; CTX2
- 編號CEA686Rb
- 物種Oryctolagus cuniculus (Rabbit,兔) 相同的名稱,不同的物種。
- 實驗方法競爭抑制
- 反應時長2h
- 檢測范圍98.8-8,000pg/mL
- 靈敏度最小可檢測劑量小于等于36.4pg/mL.
- 樣本類型Serum, plasma, tissue homogenates, cell lysates, cell culture supernates and other biological fluids
- 下載 英文說明書 中文說明書
- 規(guī)格 48T96T 96T*5 96T*10 96T*100
- 價格 ¥ 2873 ¥ 4104 ¥ 18468 ¥ 34884 ¥ 287280
- 欲了解實際交易價格和更多情況,請與當?shù)亟涗N商聯(lián)系!
特異性
本試劑盒用于檢測Ⅱ型膠原交聯(lián)羧基端肽(CTXII),經檢測與其它相似物質無明顯交叉反應。
由于受到技術及樣本來源的限制,不可能完成對所有相關或相似物質交叉反應檢測,因此本試劑盒有可能與未經檢測的其它物質有交叉反應。
回收率
分別于定值血清及血漿樣本中加入一定量的Ⅱ型膠原交聯(lián)羧基端肽(CTXII)(加標樣品),重復測定并計算其均值,回收率為測定值與理論值的比率。
樣本 | 回收率范圍(%) | 平均回收率(%) |
serum(n=5) | 93-101 | 97 |
EDTA plasma(n=5) | 78-99 | 90 |
heparin plasma(n=5) | 92-102 | 97 |
精密度
精密度用樣品測定值的變異系數(shù)CV表示。CV(%) = SD/mean×100
批內差:取同批次試劑盒對低、中、高值定值樣本進行定量檢測,每份樣本連續(xù)測定20 次,分別計算不同濃度樣本的平均值及SD值。
批間差:選取3個不同批次的試劑盒分別對低、中、高值定值樣本進行定量測定,每個樣本使用同一試劑盒重復測定8次,分別計算不同濃度樣本的平均值及SD值。
批內差: CV<10%
批間差: CV<12%
線性
在定值血清及血漿樣本內加入適量的Ⅱ型膠原交聯(lián)羧基端肽(CTXII),并倍比稀釋成1:2,1:4,1:8,1:16的待測樣本,線性范圍即為稀釋后樣本中Ⅱ型膠原交聯(lián)羧基端肽(CTXII)含量的測定值與理論值的比率。
樣本 | 1:2 | 1:4 | 1:8 | 1:16 |
serum(n=5) | 83-92% | 79-105% | 87-101% | 90-104% |
EDTA plasma(n=5) | 82-102% | 98-105% | 95-103% | 88-102% |
heparin plasma(n=5) | 91-99% | 78-93% | 86-99% | 80-92% |
穩(wěn)定性
經測定,試劑盒在有效期內按推薦溫度保存,其活性降低率小于5%。
為減小外部因素對試劑盒破壞前后檢測值的影響,實驗室的環(huán)境條件需盡量保持一致,尤其是實驗室內溫度、濕度及溫育條件。其次由同一實驗員來進行操作可減少人為誤差。
實驗流程
1. 實驗前標準品、試劑及樣本的準備;
2. 加樣(標準品及樣本)50µL,
加入50µL檢測液A(臨用前配制);
37°C溫育1小時。
3. 洗板3次;
4. 加檢測溶液B100µL,37°C孵育30分鐘;
5. 洗板5次;
6. 加TMB底物90µL,37°C孵育10-20分鐘;
7. 加終止液50µL,立即450nm讀數(shù)。
實驗原理
本試劑盒應用競爭抑制酶聯(lián)免疫分析法測定標本中待測物質水平。將Ⅱ型膠原交聯(lián)羧基端肽(CTXII)單克隆抗體包被微孔板,制成固相載體,往包被抗體的微孔中同時加入生物素標記的抗原和待測抗原(標準品或樣本),待測抗原與生物素標記抗原對特異性抗體進行競爭結合。溫育后經洗滌去掉未結合物,然后加入HRP標記的親和素,經過溫育和徹底洗滌后加入底物TMB顯色。TMB在過氧化物酶的催化下轉化成藍色,并在酸的作用下轉化成最終的黃色。待測標本濃度越高,標記抗原和抗體的結合就越受到抑制,顯色愈淺。顯色的深淺與酶量呈正相關,而與樣品中待測物質含量呈負相關。用酶標儀在450nm波長下測定吸光度(O.D.值),計算樣品濃度。
相關產品
編號 | 適用物種:Oryctolagus cuniculus (Rabbit,兔) | 應用(僅供研究使用,不用于臨床診斷!) |
CEA686Rb | Ⅱ型膠原交聯(lián)羧基端肽(CTXII)檢測試劑盒(酶聯(lián)免疫吸附試驗法) | Enzyme-linked immunosorbent assay for Antigen Detection. |
LMA686Rb | Ⅱ型膠原交聯(lián)羧基端肽(CTXII)等多因子檢測試劑盒(流式熒光發(fā)光法) | FLIA Kit for Antigen Detection. |
參考文獻
雜志 | 參考文獻 |
Cartilage | Comparison of Intra-articular Injection of Hyaluronic Acid and N-Acetyl Cysteine in the Treatment of Knee Osteoarthritis A Pilot Study [1947603516675915.abstract] |
BioMed Research International | Decreased Plasma COMP and Increased Plasma CTX-II Levels in a Chinese Pseudoachondroplasia Family with Novel COMP Mutation [pubmed:29104872] |
In Vivo | Osteochondral Repair Using Porous Three-dimensional Nanocomposite Scaffolds in a Rabbit Model [pubmed:28882956] |
Aging Cell | Transthyretin deposition promotes progression of osteoarthritis [pubmed:28941045] |
Molecular Medicine Reports | Mori Folium water extract alleviates articular cartilage damages and inflammatory responses in monosodium iodoacetate?induced osteoarthritis rats [pubmed:29067461] |
Experimental and Clinical Sciences International online journal for advances in science | Schisandrae Fructus ethanol extract ameliorates inflammatory responses and articular cartilage damage in monosodium iodoacetate-induced osteoarthritis in rats. [pubmed:28507472] |
Advances in?Clinical?and Experimental?Medicine | Fibulin-3 and other cartilage metabolism biomarkers in relationship to calprotectin (MRP8/14) and disease activity in rheumatoid arthritis patients treated with?… [68362.pdf] |
Journal of Orthopaedic Surgery and Research | The levels of urine CTX-II, C2C, and PYD in children patients with Kashin-Beck disease in Qinghai Province of China [Pubmed: 30635000] |
Nutrients | The Preventive Effects of Greenshell Mussel (Perna canaliculus) on Early-Stage Metabolic Osteoarthritis in Rats with Diet-Induced Obesity [Pubmed: 31311115] |
International journal of molecular sciences | Differences in Osteoimmunological Biomarkers Predictive of Psoriatic Arthritis among a Large Italian Cohort of Psoriatic Patients [Pubmed: 31717649] |
Applied Physiology Nutrition and Metabolism | Effectiveness of collagen supplementation on pain scores in healthy individuals with self-reported knee pain; A randomized controlled trial [Pubmed: 31990581] |
heliyon | Oral intake of Streptococcus thermophilus improves knee osteoarthritis degeneration: A randomized, double-blind, placebo-controlled clinical study [] |
EBioMedicine | Repopulation of decellularised articular cartilage by laser-based matrix engraving [33483297] |
Biomolecules | Concerted Actions by PIICP, CTXII, and TNF-|á in Patients with Juvenile Idiopathic Arthritis [33924892] |