| Kitsize | 12x8 |
| Method | ELISA |
| Incubationtime | 1x2h,1x30min |
| Standardrange | 1.7-420ng/mL |
| Specimen/Volumes | 10µLurine |
| Substrate/isotope | TMB450nm |
| RegulatoryStatus: | EU:CE,CDN:IVD |
Melatonin–Morethanasleephormone
IBLInternationalistheonlycommercialsupplierofacompletesetofuserfriendlyimmunoassaysforthereliablequantitativeassessmentofmelatonininserumaswellasinsaliva,andofitsprimarymetabolite6-sulfatoxymelatonininurine.
- TheassaysarecalibratedtoLC-MS/MS
- Thebroadstandardrangeallowsapplicationfortherapeuticdrugmonitoring
- Validatedreferencevaluesforurinary6-sulfatoxymelatonin(figure1)1
- Successfullyappliedindietresearch2-4,variousspeciesandcellculturesupernatants*
- Widelyusedandcitedinmultiplepublications*

Timeandagedependentreferencevaluesofurinary6-sulfatoxymelatoninmeasuredwithIBLInternational’sMelatonin-SulfateUrineELISA1
Melatonin:aubiquitouslydistributedandfunctionallydiversemolecule
Melatoninisanendogenoushormonesynthesizedandsecretedprimarilybythepinealgland.Itssecretionisregulatedbythesuprachiasmaticnucleiandregulatesthediurnallight-darkcyclewithpeakproductionatnightandlowlevelduringthedaytime.
Apartfromitsroleintheregulationofsleep,multiplestudiesshowitsinvolvementinawidevarietyofphysiologicalprocesses(affectingcircADIanrhythmandmood,interactingwiththeimmunesystemandactingasantioxidant,freeradicalscavengerandoncostaticagent).Moreover,ithasbeenshownthatmelatoninperformsthesefunctionsbyavarietyofmechanisms.
- MahlbergR.etal.Normativedataonthedailyprofileofurinary6-sulfatoxymelatonininhealthysubjectsbetweentheagesof20and84.Psychoneuroendocrinology.2006Jun;31(5):634-41.
- DelaPuertaC.etal.Melatoninisaphytochemicalinoliveoil.FoodChem.2007;104:609-12.
- ChoMH.etal.Chitosantreatmentsaffectgrowthandselectedqualityofsunflowersprouts.JFoodSci.2008Jan;73(1):S70-7.
- MaldonadoMD.etal.Melatoninpresentinbeercontributestoincreasethelevelsofmelatoninandantioxidantcapacityofthehumanserum.ClinNutr.2009Apr;28(2):188-91.
*ThepublicationscanberequestedatIBLinternationalviadan@ibl-international.com
Enzymeimmunoassayforthein-vitrodiagnosticquantitativedeterminationofMelatoninSulfate(synonyms:6-hydroxymelatoninsulfate,6-sulfatoxymelatonin)inhumanurine.Thepinealgland(corpuspineale)hasbeencalledaneuroendocrinetransducerbecauseofitsimportantroleinphotoperiodism.ThemajorhormoneofthepinealglandisN-acetyl-5-methoxy-tryptamineormelatoninwhichissynthezisedfromtheaminoacidtryptophane.Melatoninhasitshighestlevelsinplasmaduringnighttime.Itscharacteristicnocturnalsurgeappearstoencodetemporalinformationsuchaslengthofnight.Regulationofthemelatoninsecretionisunderneuralcontrol.Sympatheticinnervationseemstoplayamajorroleviaitsreleaseofnoradrenaline.Alteredpatternsand/orlevelsofmelatoninsecretionhavebeenreportedtocoincidewithsleepdisorders,jetlag,depression,stress,schizophrenia,hypothalamicamenorrhea,pregnancy,anorexianervosa,someformsofcancer,immunologicaldisordersaswellascontrolofsexualmaturationduringpuberty.Mostofthecirculatingmelatoninismetabolizedintheliverto6-hydroxymelatoninandsubsequentlyto6-sulfatoxymelatoninwhichisexcretedintotheurine.Theconcentrationof6-hydroxymelatoninsulfateinurinecorrelateswellwiththetotallevelofmelatonininthebloodduringthecollectionperiod.
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ELISA双抗体夹心法(enzyme linked immunosorbent assay——sandwich technique)的原理是将特异性抗体结合到固相载体上形成固相抗体,然后和待检血清中的相应抗原结合形成免疫复合物,洗涤后再加酶标记抗体,与免疫复合物中抗原结合形成酶标抗体-抗原-固相抗体复合物,加底物显色,判断抗原含量。
生物帮有相关介绍。编码RNA http://doc.bio1000.com/show-3399.html
请大家帮帮忙,第一步加完抗原后必须封闭吗
表面抗体是双抗原夹心法
E抗体和核心抗体是竞争抑制法或间接法
在这种测定方法中有3种必要的试剂:①固相的抗原或抗体(免疫吸附剂) ②酶标记的抗原或抗体(标记物)③酶作用的底物(显色剂)
测量时,抗原(抗体)先结合在固相载体上,但仍保留其免疫活性,然后加一种抗体(抗原)与酶结合成的偶联物(标记物),此偶联物仍保留其原免疫活性与酶活性,当偶联物与固相载体上的抗原(抗体)反应结合后,再加上酶的相应底物,即起催化水解或氧化还原反应而呈颜色。
其所生成的颜色深浅与欲测的抗原(抗体)含量成正比。 这种有色产物可用肉眼、光学显微镜、电子显微镜观察,也可以用分光光度计(酶标仪)加以测定。其方法简单,方便迅速,特异性强。向左转|向右转
2.加大辣根过氧化物酶标记的链霉亲和素;
1.标准曲线的标准品是否一定要梯度稀释,为什么?我试过非梯度稀释的,也可以达到线性R2=0.99.
2.我用了CurveExpert做标曲,自动搜索后发现有10种提供的方程,各种形式的,其中一个十分适合我的实验结果(LogisticModel),而其他的感觉又不适合,因为结果常常为负值。这又是为啥捏?
3.实验的酶标仪最大OD值可以测到4,如果我的测量结果在1.3,是否像其他人所说的>1了就不准确了。
4.利用夹心法进行定量分析是否一定要使用线性方程?
不好意思啊,一下问了这么多问题,最近做了一个月的ELISA,完全摸不清头脑啊。谢谢各位了

