防御素β2(DEFb2)檢測試劑盒(酶聯(lián)免疫吸附試驗法)
ELISA Kit for Defensin Beta 2 (DEFb2)
B-DF2; DEFB2; BD2; DEF-B2; HBD2; DEFB102; HBD-2; SAP1; DEFB4A; DEFB4; Skin-Antimicrobial Peptide 1
- 編號SEA072Hu
- 物種Homo sapiens (Human，人)相同的名稱，不同的物種。
- 實驗方法雙抗夾心
- 反應時長3h
- 檢測范圍31.2-2,000pg/mL
- 靈敏度最小可檢測劑量小于等于12.4pg/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
- 價格¥ 2646¥ 3780¥ 17010¥ 32130¥ 264600
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產(chǎn)品包裝(模擬)
產(chǎn)品包裝(模擬)
實驗結果圖
標準曲線圖
通過ISO 9001、ISO 13485質量體系認證
特異性
本試劑盒用于檢測防御素β2(DEFb2)，經(jīng)檢測與其它相似物質無明顯交叉反應。
由于受到技術及樣本來源的限制，不可能完成對所有相關或相似物質交叉反應檢測，因此本試劑盒有可能與未經(jīng)檢測的其它物質有交叉反應。
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β2(DEFb2)（加標樣品），重復測定并計算其均值，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) | 84-101 | 95 |
| EDTA plasma(n=5) | 99-105 | 102 |
| heparin plasma(n=5) | 85-99 | 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測定8次，分別計算不同濃度樣本的平均值及SD值。
批內差： CV<10%
批間差： CV<12%
線性
在定值血清及血漿樣本內加入適量的防御素β2(DEFb2)，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β2(DEFb2)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) | 79-91% | 88-98% | 82-96% | 79-99% |
| EDTA plasma(n=5) | 79-96% | 78-102% | 94-103% | 80-91% |
| heparin plasma(n=5) | 80-89% | 79-102% | 80-91% | 79-90% |
穩(wěn)定性
經(jīng)測定，試劑盒在有效期內按推薦溫度保存，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β2(DEFb2)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β2(DEFb2)與連接于固相載體上的抗體結合，然后加入生物素化的防御素β2(DEFb2)抗體，將未結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化成藍色，并在酸的作用下轉化成最終的黃色。顏色的深淺和樣品中的防御素β2(DEFb2)呈正相關。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
相關產(chǎn)品
| 編號 | 適用物種：Homo sapiens (Human，人) | 應用(僅供研究使用，不用于臨床診斷！) |
| APA072Hu01 | 防御素β2(DEFb2)活性蛋白 | Cell?culture;?Activity?Assays. |
| RPA072Hu01 | 防御素β2(DEFb2)重組蛋白 | Positive Control; Immunogen; SDS-PAGE; WB. |
| PAA072Hu01 | 防御素β2(DEFb2)多克隆抗體 | WB |
| LAA072Hu71 | 防御素β2(DEFb2)多克隆抗體(生物素標記) | WB; IHC; ICC. |
| MAA072Hu22 | 防御素β2(DEFb2)單克隆抗體 | WB; IHC; ICC; IP. |
| SEA072Hu | 防御素β2(DEFb2)檢測試劑盒(酶聯(lián)免疫吸附試驗法) | Enzyme-linked immunosorbent assay for Antigen Detection. |
| LMA072Hu | 防御素β2(DEFb2)等多因子檢測試劑盒(流式熒光發(fā)光法) | FLIA Kit for Antigen Detection. |
| KSA072Hu01 | 防御素β2(DEFb2)檢測試劑盒DIY材料(酶聯(lián)免疫吸附試驗法) | Main materials for "Do It (ELISA Kit) Yourself". |
參考文獻
| 雜志 | 參考文獻 |
| Livestock Science | The effect of Lactobacillus on the expression of porcine β-defensin-2 in the digestive tract of piglets[ScienceDirect: S1871141311000126] |
| 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] |
| Plos Pathogens | HIF-1α Is Essential for Effective PMN Bacterial Killing, Antimicrobial Peptide Production and Apoptosis in?Pseudomonas aeruginosa?Keratitis[PubMed: PMC3715414] |
| 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] |
| University of Waikato | The Assessment of Vitamin D, Antimicrobial Peptides and Procalcitonin in Bronchiectasis[Waikato:Source] |
| Vaccine | On birth single dose live attenuated OPV and BCG vaccination induces gut cathelicidin LL37 responses at 6 week of age: A natural experiment[Pubmed:25444792] |
| 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] |
| Respiratory Research | Vitamin D and allergic airway disease shape the murine lung microbiome in a sex-specific manner.[pubmed:27655266] |
| Key Engineering Materials | The Level of Inflammatory Cytokines and Antimicrobial Peptides after Composite Material Implantation and Contamination with Bacterial Culture.[16629795] |
| Scientific Reports | Measurements of AMPs in stratum corneum of atopic dermatitis and healthy skin–tape stripping technique[Pubmed:29374283] |
| Frontiers in Microbiology | Swine-Derived Probiotic Lactobacillus plantarum Inhibits Growth and Adhesion of Enterotoxigenic Escherichia coli and Mediates Host Defense[Pubmed:29997590] |
| Journal of Dermatological?Science | Glyoxal-induced exacerbation of pruritus and dermatitis is associated with staphylococcus aureus colonization in the skin of a rat model of atopic dermatitis[Pubmed:29496360] |
| International Immunopharmacology | Caprylic acid and nonanoic acid upregulate endogenous host defense peptides to enhance intestinal epithelial immunological barrier function via histone deacetylase?…[Pubmed: 30342347] |
| 拉脫維亞科學院院刊 | Influence of Antibiotic-Impregnated Biomaterials on Inflammatory Cytokines[] |
| Veterinary?Research | Bovine fetal mesenchymal stem cells exert antiproliferative effect against mastitis causing pathogen Staphylococcus aureus[Pubmed: 30975214] |
| Journal of Immunology Research | Damage-Associated Molecular Patterns and Myeloid-Derived Suppressor Cells in Bronchoalveolar Lavage Fluid in Chronic Obstructive Pulmonary Disease Patients[] |
| Veterinary Research | Toll-like receptor 5-mediated IL-17C expression in intestinal epithelial cells enhances epithelial host defense against F4+ ETEC infection[Pubmed: 31221216] |
| 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] |
| Medicine | Regulatory T cells, damage-associated molecular patterns, and myeloid-derived suppressor cells in bronchoalveolar lavage fluid interlinked with chronic obstructive?…[Pubmed:35687771] |
