PRODUCT CENTER
特色產(chǎn)品當(dāng)前位置:首頁(yè) > 特色產(chǎn)品
犬尿氨酸是一種非蛋白質(zhì)性氨基酸,在色氨酸降解過(guò)程中作為代謝中間體產(chǎn)生[1-5]。色氨酸的降解是由誘導(dǎo)型酶吲哚胺-2,3-雙加氧酶(IDO)催化的。產(chǎn)品為犬尿氨酸[4,6-8]。細(xì)胞因子,特別是干擾素γ[5,9,10],會(huì)影響IDO的活性,因此犬尿氨酸途徑與免疫系統(tǒng)密切相關(guān)[9,11]。犬尿氨酸可以進(jìn)一步轉(zhuǎn)化為具有神經(jīng)保護(hù)作用的犬尿氨酸酯,也可以轉(zhuǎn)化為具有神經(jīng)毒性的喹啉酸[6,11]。

艾美捷LDN Labor Diagnostika Nord-犬尿氨酸ELISA(BA E-2200R):
名稱:犬尿氨酸酶聯(lián)免疫吸附試驗(yàn)(ELISA)
描述:用于血清和EDTA血漿樣本中L-犬尿氨酸的定量酶免疫測(cè)定。
設(shè)計(jì):通用的樣品準(zhǔn)備。液相衍生化(96孔反應(yīng)板)。12×8可分離式微孔板。6個(gè)標(biāo)準(zhǔn)品。2個(gè)對(duì)照品。即用型。
樣品體積:
10微升血清或血漿
總測(cè)定時(shí)間:樣品準(zhǔn)備和酰化1小時(shí)30分鐘;ELISA過(guò)夜,2次各30分鐘
標(biāo)準(zhǔn)范圍:0/100 - 10,000納克/毫升
靈敏度:45.7納克/毫升
儲(chǔ)存:2 - 8攝氏度
試劑盒:96次測(cè)定
優(yōu)點(diǎn):
- 廣泛的標(biāo)準(zhǔn)范圍
- 易于操作
- 高分析特異性
- 與高度復(fù)雜的XLC-MS/MS方法有極好的相關(guān)性
- 歐盟CE認(rèn)證:是
LDN Labor Diagnostika Nord-犬尿氨酸ELISA預(yù)期用途和原理:
酶免疫測(cè)定法用于定量測(cè)定血清和EDTA血漿樣品中的L-犬尿蛋白,以評(píng)估L-犬尿素穩(wěn)態(tài)。在酰化過(guò)程中,犬尿蛋白在37°C下被激活,隨后與蛋白質(zhì)偶聯(lián)。隨后的競(jìng)爭(zhēng)ELISA使用微量滴定板形式。抗原與微量滴定板的固相結(jié)合。酰化標(biāo)準(zhǔn)品、對(duì)照品和樣品的分析物濃度與固定數(shù)量的抗體結(jié)合位點(diǎn)的固相結(jié)合分析物濃度相匹配。在系統(tǒng)處于平衡狀態(tài)后,通過(guò)洗滌除去游離抗原和游離抗原-抗體復(fù)合物。通過(guò)偶聯(lián)TMB作為底物的抗兔IgG過(guò)氧化物酶檢測(cè)與固相結(jié)合的抗體,從而產(chǎn)生顯色反應(yīng)。在450nm的波長(zhǎng)下監(jiān)測(cè)反應(yīng)。通過(guò)將未知樣品的吸收與用已知標(biāo)準(zhǔn)濃度制備的參考曲線進(jìn)行比較來(lái)實(shí)現(xiàn)未知樣品的定量。建議手動(dòng)處理ELISA。自動(dòng)實(shí)驗(yàn)室設(shè)備的使用由用戶負(fù)責(zé)。本產(chǎn)品不用于臨床診斷。
DN Labor Diagnostika Nord-犬尿氨酸ELISA文獻(xiàn)參考:
1.Konishi,M.,et al.,Impact of Plasma Kynurenine Level on Functional Capacity and Outcome in
Heart Failure-Results From Studies Investigating Co-morbidities Aggravating Heart Failure (SICA-
HF).Circ ],2016.81(1):p.52-61.
2. Li,H.,et al.,Metabolomic adaptations and correlates of Sorvival to immune checkpoint blockade.Nat Commun,2019.10(1):p.4346.
3. Metcalfe,A.J.,et al.,Acute and chronic effects of exercise on the kynurenine pathway in humans-A brief review and future perspectives.Physiol Behav,2018.194:p.583-587.
4.Zinellu,A.,et al.,Impact of cholesterol loweriog treatment on plasma kynurenine and tryptophanconcentrations in chronic kidney disease:celationship with oxidative stress improvement.NutrMetab Cardiovasc Dis,2015.25(2):p.153-9.
5.de Jong,W.H.,et al.,Plasma tryptophan,kynurenine and 3-hydroxykynurenine measurementusing automated on-line solid-phase extraction HPLC-tandem mass spectrometry.]ChromatogrB Analyt Technol Biomed Life Sc,2009.877(7):p.603-9.
6.Barone,P.,The Yin'and the Yang'of the kynurenine pathway:excitotoxicity and neuroprotectionimbalance in stress-induced disorders.Behav Pharmacol,2019.30(2 and 3-Spec Issue):p.163-186.
7.Keegan,M.R.,et al.ryptophan metabolism and its relationship with central nervous systemtoxicity in people liing with HIV switching from efavirenz to dolutegravir.]Neurovirol,2019.25(1):p.85-90
8.Kim,Y.K.and S.W.Jeon,Neuroinflammation and the Immune-Kynurenine Pathway in AnxietyDisorders.Curr Neuropharmacol,2018.16(5):p.574-582.
9.Lim,C.Ket al.,Involvement of the kynurenine pathway in the pathogenesis of Parkinson'sdisease.Prog Neurobiol,2017.155:p.76-95.
10.StraSser,B.,et al.,Kynurenine pathway metabolism and immune activation:Peripheralmeasurements in psychiatric and co-morbid conditions.Neuropharmacology,2017.112(Pt B):p.286-296.
11.Look,M.P.,et al.,Parallel decrease in neurotoxin quinolinic acid and soluble tumor necrosis factorreceptor p75 in serum during highly active antiretroviral therapy of HIV type 1 disease.AIDS ResHum Retroviruses,2000.16(13):p.1215-21.
LDN Labor Diagnostika Nord GmbH & Co. KG(簡(jiǎn)稱LDN)旨在開發(fā)、制造和向臨床和研究實(shí)驗(yàn)室市場(chǎng)提供專業(yè)的體外診斷測(cè)試系統(tǒng)和創(chuàng)新技術(shù)。艾美捷科技是LDN Labor Diagnostika Nord的中國(guó)代理商,為科研工作者提供優(yōu)質(zhì)的產(chǎn)品與服務(wù)。
微信掃碼在線客服