防御素β1(DEFb1)檢測試劑盒(酶聯(lián)免疫吸附試驗法)
ELISA Kit for Defensin Beta 1 (DEFb1)
B-DF1; DEFB1; BD1; DEF-B1; DEFB101; HBD1
- 編號SEB373Bo
- 物種Bos taurus; Bovine (Cattle,牛) 相同的名稱,不同的物種。
- 實驗方法雙抗夾心
- 反應(yīng)時長3h
- 檢測范圍0.156-10ng/mL
- 靈敏度最小可檢測劑量小于等于0.055ng/mL.
- 樣本類型Serum, plasma, tissue homogenates 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 ¥ 3352 ¥ 4788 ¥ 21546 ¥ 40698 ¥ 335160
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特異性
本試劑盒用于檢測防御素β1(DEFb1),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防御素β1(DEFb1)(加標樣品),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) | 78-93 | 83 |
EDTA plasma(n=5) | 93-101 | 96 |
heparin plasma(n=5) | 92-101 | 95 |
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)加入適量的防御素β1(DEFb1),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防御素β1(DEFb1)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) | 80-91% | 94-102% | 92-101% | 78-94% |
EDTA plasma(n=5) | 95-103% | 78-102% | 79-95% | 98-105% |
heparin plasma(n=5) | 78-90% | 78-95% | 88-104% | 87-94% |
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. 實驗前標準品、試劑及樣本的準備;
2. 加樣(標準品及樣本)100µL,37°C孵育1小時;
3. 吸棄,加檢測溶液A100µL,37°C孵育1小時;
4. 洗板3次;
5. 加檢測溶液B100µL,37°C孵育30分鐘;
6. 洗板5次;
7. 加TMB底物90µL,37°C孵育10-20分鐘;
8. 加終止液50µL,立即450nm讀數(shù)。
實驗原理
將防御素β1(DEFb1)抗體包被于96孔微孔板中,制成固相載體,向微孔中分別加入標準品或標本,其中的防御素β1(DEFb1)與連接于固相載體上的抗體結(jié)合,然后加入生物素化的防御素β1(DEFb1)抗體,將未結(jié)合的生物素化抗體洗凈后,加入HRP標記的親和素,再次徹底洗滌后加入TMB底物顯色。TMB在過氧化物酶的催化下轉(zhuǎn)化成藍色,并在酸的作用下轉(zhuǎn)化成最終的黃色。顏色的深淺和樣品中的防御素β1(DEFb1)呈正相關(guān)。用酶標儀在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!) |
RPB373Bo01 | 防御素β1(DEFb1)重組蛋白 | Positive Control; Immunogen; SDS-PAGE; WB. |
PAB373Bo01 | 防御素β1(DEFb1)多克隆抗體 | WB; IHC; ICC; IP. |
MAB373Bo21 | 防御素β1(DEFb1)單克隆抗體 | WB; IHC; ICC; IP. |
SEB373Bo | 防御素β1(DEFb1)檢測試劑盒(酶聯(lián)免疫吸附試驗法) | Enzyme-linked immunosorbent assay for Antigen Detection. |
LMB373Bo | 防御素β1(DEFb1)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
雜志 | 參考文獻 |
Appl Environ Microbiol. | Modulation of Porcine β-Defensins 1 and 2 upon Individual and Combined Fusarium Toxin Exposure in a Swine Jejunal Epithelial Cell Line [Asm: Source] |
British Journal of Nutrition | Identification of sociodemographic and clinical factors associated with the levels of human β-defensin-1 and human β-defensin-2 in the human milk of Han Chinese [Pubmed: 24124699] |
International Journal of Dairy Technology | Concentration characteristics of bovine β-defensin 1 and 2 in fresh bovine milk and infant formula [Doi: 10.1111] |
Molecular Nutrition Food Research | Green?tea?polyphenol?epigallocatechin-3-gallate?improves?epithelial?barrier?function?by?inducing?the?productionof?antimicrobial?peptide?pBD-1?and?pBD-2?in?monolayers?of?porcine?intestinal?epithelial?IPEC-J2?cells. [Pubmed:26991948] |
Frontiers in Microbiology | Swine-Derived Probiotic Lactobacillus plantarum Inhibits Growth and Adhesion of Enterotoxigenic Escherichia coli and Mediates Host Defense [Pubmed:29997590] |
International Immunopharmacology | Caprylic acid and nonanoic acid upregulate endogenous host defense peptides to enhance intestinal epithelial immunological barrier function via histone deacetylase?… [Pubmed: 30342347] |
cyberleninka | EFFECT OF NIOSOMAL ANTIMICROBIAL PEPTIDE HBD-1 ON THE HEALING RATE OF INFECTED WOUNDS IN RATS [] |
Fundamental & clinical pharmacology | Effect of antimicrobial peptides HNP‐1 and hBD‐1 on Staphylococcus aureus strains in vitro and in vivo [Pubmed: 31313350] |
Cytokine | Levels of pro-and anti-inflammatory cytokines in cystic fibrosis patients with or without gingivitis [Pubmed: 31927460] |
Animals | Fat Encapsulation Reduces Diarrhea in Piglets Partially by Repairing the Intestinal Barrier and Improving Fatty Acid Transport [33375218] |
Sci Rep | Human beta defensin levels and vaginal microbiome composition in post-menopausal women diagnosed with lichen sclerosus [34362937] |
J Mol Histol | Isolation, culture, and identification of ceruminous gland cells [Pubmed:35113280] |