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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)

Multiplex Assay Kit for Alpha-Melanocyte Stimulating Hormone (aMSH) ,etc. by FLIA (Flow Luminescence Immunoassay)

α-MSH; Intermedins; Alpha-Melanotropin, Alpha-Melanocortin; Alpha-Intermedin

(注:單次混測多因子不超過8個(gè)指標(biāo) )

  • 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)產(chǎn)品包裝(模擬)
  • 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)產(chǎn)品包裝(模擬)
  • Certificate通過ISO 9001、ISO 13485質(zhì)量體系認(rèn)證

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)81-9286
EDTA plasma(n=5)91-10198
heparin plasma(n=5)93-10196

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1:21:41:81:16
serum(n=5)78-89%87-94%85-99%81-97%
EDTA plasma(n=5)78-98%97-104%98-105%92-105%
heparin plasma(n=5)79-94%81-88%90-101%82-105%

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、向?qū)嶒?yàn)板每孔內(nèi)加入200μL分析緩沖液以預(yù)濕;
2、實(shí)驗(yàn)前標(biāo)準(zhǔn)品、試劑及樣本準(zhǔn)備;
3、加樣(標(biāo)準(zhǔn)品、樣本、磁珠、檢測溶液A),標(biāo)準(zhǔn)品或樣本50μL,加檢測溶液A 50μL,及磁珠10μL,25°C酶標(biāo)板振蕩器孵育90分鐘;
4、磁吸甩干,加檢測溶液B 100μL,25°C振動(dòng)孵育30分鐘;
5、磁吸洗板1次;
6、加鞘液100μL,旋渦震蕩10分鐘后讀數(shù)。

實(shí)驗(yàn)原理

將α-黑素細(xì)胞刺激素(aMSH)抗體包被于磁性微球表面,制成固相載體。在微孔中同時(shí)加入待測抗原(標(biāo)準(zhǔn)品或樣本)、生物素標(biāo)記的抗原和微球。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。加入PE標(biāo)記的鏈霉親和素,上機(jī)讀數(shù)。MFI值(Median Fluorescence Intensity)和樣品中的α-黑素細(xì)胞刺激素(aMSH)濃度呈負(fù)相關(guān)。

贈(zèng)品

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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 ResPharmacological induction of skin pigmentation unveils the neuroendocrine circuit regulated by light[PubMed: 26582755]
The Journal of Biological ChemistryIntermedin Restores Hyperhomocysteinemia-induced Macrophage Polarization and Improves Insulin Resistance in Mice[Pubmed:27080257]
Pigment Cell & Melanoma ResearchPharmacological induction of skin pigmentation unveils the neuroendocrine circuit reCavia (Guinea pig )lated by light[Pubmed:26582755]
Nature CommunicationsEndocrine disruptors induce perturbations in endoplasmic reticulum and mitochondria of human pluripotent stem cell derivatives.[pubmed:28794470]
Cell?Stem?CellSuper-Obese Patient-Derived iPSC Hypothalamic Neurons Exhibit Obesogenic Signatures and Hormone Responses[Pubmed:29681516]
European NeuropsychopharmacologyEpigenetic alterations of the POMC promoter in tobacco dependence[Pubmed:29871818]
NeuropeptidesMechanisms of sustained long-term weight loss after RYGB: α-MSH is a key factor[Pubmed:29685637]
NeuropsychobiologyAlcohol Withdrawal and Proopiomelanocortin Neuropeptides in an Animal Model of Alcohol Dependence[Pubmed: 31117084]
INTERNATIONAL IMMUNOPHARMACOLOGYIntermedin alleviates the inflammatory response and stabilizes the endothelial barrier in LPS-induced ARDS through the PI3K/Akt/eNOS signaling pathway[Pubmed: 32892076]
J Endocrinol InvestSerum alpha-melanocyte-stimulating hormone (a-MSH), brain-derived neurotrophic factor (BDNF), and agouti-related protein (AGRP) levels in children with Prader?…[Pubmed:35098494]