α-黑素細(xì)胞刺激素(aMSH)檢測試劑盒(酶聯(lián)免疫吸附試驗(yàn)法)
ELISA Kit for Alpha-Melanocyte Stimulating Hormone (aMSH)
α-MSH; Intermedins; Alpha-Melanotropin, Alpha-Melanocortin; Alpha-Intermedin
- 編號CEA239Rb
 - 物種Oryctolagus cuniculus (Rabbit,兔)相同的名稱,不同的物種。
 - 實(shí)驗(yàn)方法競爭抑制
 - 反應(yīng)時(shí)長2h
 - 檢測范圍123.5-10000pg/mL
 - 靈敏度最小可檢測劑量小于等于49.4pg/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48T96T96T*596T*1096T*100
 - 價(jià)格¥ 2873¥ 4104¥ 18468¥ 34884¥ 287280
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特異性
                        本試劑盒用于檢測α-黑素細(xì)胞刺激素(aMSH),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α-黑素細(xì)胞刺激素(aMSH)(加標(biāo)樣品),重復(fù)測定并計(jì)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) | 89-105 | 101 | 
| EDTA plasma(n=5) | 92-99 | 95 | 
| heparin plasma(n=5) | 78-94 | 84 | 
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(jìn)行定量檢測,每份樣本連續(xù)測定20 次,分別計(jì)算不同濃度樣本的平均值及SD值。
                    批間差:選取3個(gè)不同批次的試劑盒分別對低、中、高值定值樣本進(jìn)行定量測定,每個(gè)樣本使用同一試劑盒重復(fù)測定8次,分別計(jì)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α-黑素細(xì)胞刺激素(aMSH),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α-黑素細(xì)胞刺激素(aMSH)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) | 80-94% | 80-101% | 95-105% | 78-90% | 
| EDTA plasma(n=5) | 79-101% | 93-102% | 96-105% | 79-90% | 
| heparin plasma(n=5) | 83-101% | 78-89% | 85-102% | 96-103% | 
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(shí)驗(yàn)室的環(huán)境條件需盡量保持一致,尤其是實(shí)驗(yàn)室內(nèi)溫度、濕度及溫育條件。其次由同一實(shí)驗(yàn)員來進(jìn)行操作可減少人為誤差。
                
實(shí)驗(yàn)流程
1. 實(shí)驗(yàn)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(shí)。
                            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(shí)驗(yàn)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α-黑素細(xì)胞刺激素(aMSH)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(shí)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(jìn)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(jì)算樣品濃度。
相關(guān)產(chǎn)品
| 編號 | 適用物種:Oryctolagus cuniculus (Rabbit,兔) | 應(yīng)用(僅供研究使用,不用于臨床診斷!) | 
| CEA239Rb | α-黑素細(xì)胞刺激素(aMSH)檢測試劑盒(酶聯(lián)免疫吸附試驗(yàn)法) | Enzyme-linked immunosorbent assay for Antigen Detection. | 
| LMA239Rb | α-黑素細(xì)胞刺激素(aMSH)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) | 
| J Biochem. | Generation of a human bone marrow-derived mesenchymal stem cell line expressing and secreting high levels of bioactive α-melanocyte-stimulating hormone.[Pubmed: 23341471] | 
| Pigment Cell Melanoma Res | Pharmacological induction of skin pigmentation unveils the neuroendocrine circuit regulated by light[PubMed: 26582755] | 
| The Journal of Biological Chemistry | Intermedin Restores Hyperhomocysteinemia-induced Macrophage Polarization and Improves Insulin Resistance in Mice[Pubmed:27080257] | 
| Pigment Cell & Melanoma Research | Pharmacological induction of skin pigmentation unveils the neuroendocrine circuit reCavia (Guinea pig )lated by light[Pubmed:26582755] | 
| Nature Communications | Endocrine disruptors induce perturbations in endoplasmic reticulum and mitochondria of human pluripotent stem cell derivatives.[pubmed:28794470] | 
| Cell?Stem?Cell | Super-Obese Patient-Derived iPSC Hypothalamic Neurons Exhibit Obesogenic Signatures and Hormone Responses[Pubmed:29681516] | 
| European Neuropsychopharmacology | Epigenetic alterations of the POMC promoter in tobacco dependence[Pubmed:29871818] | 
| Neuropeptides | Mechanisms of sustained long-term weight loss after RYGB: α-MSH is a key factor[Pubmed:29685637] | 
| Neuropsychobiology | Alcohol Withdrawal and Proopiomelanocortin Neuropeptides in an Animal Model of Alcohol Dependence[Pubmed: 31117084] | 
| INTERNATIONAL IMMUNOPHARMACOLOGY | Intermedin alleviates the inflammatory response and stabilizes the endothelial barrier in LPS-induced ARDS through the PI3K/Akt/eNOS signaling pathway[Pubmed: 32892076] | 
| J Endocrinol Invest | Serum alpha-melanocyte-stimulating hormone (a-MSH), brain-derived neurotrophic factor (BDNF), and agouti-related protein (AGRP) levels in children with Prader?…[Pubmed:35098494] | 





