防御素β2(DEFb2)检测试剂盒(酶联免疫吸附试验法)
ELISA Kit for Defensin Beta 2 (DEFb2)
B-DF2; DEFB2; BD2; DEF-B2; HBD2; DEFB102; HBD-2; SAP1; DEFB4A; DEFB4; Skin-Antimicrobial Peptide 1
- 编号SEA072Bo
- 物种Bos taurus; Bovine (Cattle，牛) 相同的名称，不同的物种。
- 实验方法双抗夹心
- 反应时长3h
- 检测范围15.6-1000pg/mL
- 灵敏度最小可检测剂量小于等于5.7pg/mL.
- 样本类型serum, plasma, tissue homogenates and other biological fluids
- 下载 英文说明书 中文说明书
- 规格 48T96T 96T*5 96T*10 96T*100
- 价格 ¥ 3175 ¥ 4536 ¥ 20412 ¥ 38556 ¥ 317520
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产品包装(模拟)
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产品包装(模拟)
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实验结果图
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标准曲线图
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通过ISO 9001、ISO 13485质量体系认证
特异性
本试剂盒用于检测防御素β2(DEFb2)，经检测与其它相似物质无明显交叉反应。
由于受到技术及样本来源的限制，不可能完成对所有相关或相似物质交叉反应检测，因此本试剂盒有可能与未经检测的其它物质有交叉反应。
回收率
分别于定值血清及血浆样本中加入一定量的防御素β2(DEFb2)（加标样品），重复测定并计算其均值，回收率为测定值与理论值的比率。
| 样本 | 回收率范围(%) | 平均回收率(%) |
| serum(n=5) | 91-101 | 96 |
| EDTA plasma(n=5) | 96-105 | 101 |
| heparin plasma(n=5) | 79-98 | 91 |
精密度
精密度用样品测定值的变异系数CV表示。CV(%) = SD/mean×100
批内差：取同批次试剂盒对低、中、高值定值样本进行定量检测,每份样本连续测定20 次，分别计算不同浓度样本的平均值及SD值。
批间差：选取3个不同批次的试剂盒分别对低、中、高值定值样本进行定量测定，每个样本使用同一试剂盒重复测定8次，分别计算不同浓度样本的平均值及SD值。
批内差： CV<10%
批间差： CV<12%
线性
在定值血清及血浆样本内加入适量的防御素β2(DEFb2)，并倍比稀释成1:2，1:4，1:8，1:16的待测样本，线性范围即为稀释后样本中防御素β2(DEFb2)含量的测定值与理论值的比率。
| 样本 | 1:2 | 1:4 | 1:8 | 1:16 |
| serum(n=5) | 78-90% | 95-102% | 90-97% | 93-105% |
| EDTA plasma(n=5) | 94-104% | 88-101% | 89-103% | 79-94% |
| heparin plasma(n=5) | 94-103% | 99-105% | 78-103% | 80-96% |
稳定性
经测定，试剂盒在有效期内按推荐温度保存，其活性降低率小于5%。
为减小外部因素对试剂盒破坏前后检测值的影响，实验室的环境条件需尽量保持一致，尤其是实验室内温度、湿度及温育条件。其次由同一实验员来进行操作可减少人为误差。
实验流程
1. 实验前标准品、试剂及样本的准备；
2. 加样（标准品及样本）100µL，37°C孵育1小时；
3. 吸弃，加检测溶液A100µL，37°C孵育1小时；
4. 洗板3次；
5. 加检测溶液B100µL，37°C孵育30分钟；
6. 洗板5次；
7. 加TMB底物90µL，37°C孵育10-20分钟；
8. 加终止液50µL，立即450nm读数。
实验原理
将防御素β2(DEFb2)抗体包被于96孔微孔板中，制成固相载体，向微孔中分别加入标准品或标本，其中的防御素β2(DEFb2)与连接于固相载体上的抗体结合，然后加入生物素化的防御素β2(DEFb2)抗体，将未结合的生物素化抗体洗净后，加入HRP标记的亲和素，再次彻底洗涤后加入TMB底物显色。TMB在过氧化物酶的催化下转化成蓝色，并在酸的作用下转化成最终的黄色。颜色的深浅和样品中的防御素β2(DEFb2)呈正相关。用酶标仪在450nm波长下测定吸光度(O.D.值)，计算样品浓度。
增值服务
相关产品
| 编号 | 适用物种：Bos taurus; Bovine (Cattle，牛) | 应用(仅供研究使用，不用于临床诊断！) |
| RPA072Bo01 | 防御素β2(DEFb2)重组蛋白 | Positive Control; Immunogen; SDS-PAGE; WB. |
| PAA072Bo01 | 防御素β2(DEFb2)多克隆抗体 | WB; IHC; ICC; IP. |
| MAA072Bo21 | 防御素β2(DEFb2)单克隆抗体 | WB; IHC; ICC; IP. |
| SEA072Bo | 防御素β2(DEFb2)检测试剂盒(酶联免疫吸附试验法) | Enzyme-linked immunosorbent assay for Antigen Detection. |
| LMA072Bo | 防御素β2(DEFb2)等多因子检测试剂盒(流式荧光发光法) | FLIA Kit for Antigen Detection. |
参考文献
| 杂志 | 参考文献 |
| 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] |
| 拉脱维亚科学院院刊 | 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] |
