膽囊收縮素(CCK)檢測試劑盒(酶聯(lián)免疫吸附試驗法)
ELISA Kit for Cholecystokinin (CCK)
CCK-PZ
- 編號CEA802Bo
- 物種Bos taurus; Bovine (Cattle,牛) 相同的名稱,不同的物種。
- 實驗方法競爭抑制
- 反應(yīng)時長2h
- 檢測范圍12.35-1,000pg/mL
- 靈敏度最小可檢測劑量小于等于4.64pg/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 ¥ 3175 ¥ 4536 ¥ 20412 ¥ 38556 ¥ 317520
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特異性
本試劑盒用于檢測膽囊收縮素(CCK),經(jīng)檢測與其它相似物質(zhì)無明顯交叉反應(yīng)。
由于受到技術(shù)及樣本來源的限制,不可能完成對所有相關(guān)或相似物質(zhì)交叉反應(yīng)檢測,因此本試劑盒有可能與未經(jīng)檢測的其它物質(zhì)有交叉反應(yīng)。
回收率
分別于定值血清及血漿樣本中加入一定量的膽囊收縮素(CCK)(加標(biāo)樣品),重復(fù)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) | 89-97 | 93 |
EDTA plasma(n=5) | 82-94 | 86 |
heparin plasma(n=5) | 95-103 | 101 |
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(nèi)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(fù)測定8次,分別計算不同濃度樣本的平均值及SD值。
批內(nèi)差: CV<10%
批間差: CV<12%
線性
在定值血清及血漿樣本內(nèi)加入適量的膽囊收縮素(CCK),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膽囊收縮素(CCK)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) | 90-98% | 81-96% | 94-104% | 86-99% |
EDTA plasma(n=5) | 95-102% | 78-103% | 96-104% | 99-105% |
heparin plasma(n=5) | 99-105% | 78-99% | 89-96% | 88-98% |
穩(wěn)定性
經(jīng)測定,試劑盒在有效期內(nèi)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(nèi)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(biāo)準(zhǔn)品、試劑及樣本的準(zhǔn)備;
2. 加樣(標(biāo)準(zhǔn)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(yīng)用競爭抑制酶聯(lián)免疫分析法測定標(biāo)本中待測物質(zhì)水平。將膽囊收縮素(CCK)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(biāo)記的抗原和待測抗原(標(biāo)準(zhǔn)品或樣本),待測抗原與生物素標(biāo)記抗原對特異性抗體進行競爭結(jié)合。溫育后經(jīng)洗滌去掉未結(jié)合物,然后加入HRP標(biāo)記的親和素,經(jīng)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(zhuǎn)化成藍(lán)色,并在酸的作用下轉(zhuǎn)化成最終的黃色。待測標(biāo)本濃度越高,標(biāo)記抗原和抗體的結(jié)合就越受到抑制,顯色愈淺。顯色的深淺與酶量呈正相關(guān),而與樣品中待測物質(zhì)含量呈負(fù)相關(guān)。用酶標(biāo)儀在450nm波長下測定吸光度(O.D.值),計算樣品濃度。
增值服務(wù)
相關(guān)產(chǎn)品
編號 | 適用物種:Bos taurus; Bovine (Cattle,牛) | 應(yīng)用(僅供研究使用,不用于臨床診斷!) |
CEA802Bo | 膽囊收縮素(CCK)檢測試劑盒(酶聯(lián)免疫吸附試驗法) | Enzyme-linked immunosorbent assay for Antigen Detection. |
LMA802Bo | 膽囊收縮素(CCK)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(xiàn)
雜志 | 參考文獻(xiàn) |
Journal of Obstetrics and Gynaecology Research? | Disturbed release of cholecystokinin in pregnant women with hyperemesis gravidarum [Pubmed:25331205] |
World J Gastroenterol | Effects of sphincter of Oddi motility on the formation of cholesterol gallstones [Pubmed:27350732] |
Journal?of?Ethnopharmacology | Luhong?formula?inhibits?myocardial?fibrosis?in a?paracrine?manner?by?activating?thegp130/JAK2/STAT3?pathway?in?cardiomyocytes. [pubmed:28115285] |
Cellular physiology and biochemistry | Cholecystokinin Expression in the Development of Postinfarction Heart Failure. [pubmed:29130944] |
JOURNAL?OF?PHARMACEUTICAL SCIENCES | Assessment of the role of cholecystokinin in hyperemesis gravidarum and correlation with its severity [:] |
Journal of?Dairy?Science | Effects of dietary leucine and phenylalanine on pancreas development, enzyme activity, and relative gene expression in milk-fed Holstein dairy calves [Pubmed:29477524] |
Food?and Nutrition?Research | Alignments of endocrine, anthropometric, and metabolic parameters in type 2 diabetes after intervention with an Okinawa-based Nordic diet [Pubmed:29599686] |
International?Heart?Journal | The Relationship of Appetite-Regulating Hormones in the Development of Cardiac Cachexia [Pubmed: 30799377] |
Chinese Medicine | Hejie Zhitong prescription promotes sleep and inhibits nociceptive transmission-associated neurotransmitter activity in a rodent migraine model [Pubmed: 33014123] |
foods | Appetite and Satiety Effects of the Acute and Regular Consumption of Green Coffee Phenols and Green Coffee Phenol/Oat β-Glucan Nutraceuticals in Subjects with?… [34828792] |
npj Biofilms and Microbiomes | The microbiota-gut-kidney axis mediates host osmoregulation in a small desert mammal [Pubmed:35379849] |
Food Funct | Digestion characteristics of quinoa, barley and mungbean proteins and the effects of their simulated gastrointestinal digests on CCK secretion in enteroendocrine STC?… [Pubmed:35587126] |