防御素β1(DEFb1)检测试剂盒(酶联免疫吸附试验法)
ELISA Kit for Defensin Beta 1 (DEFb1)
B-DF1; DEFB1; BD1; DEF-B1; DEFB101; HBD1
- 编号SEB373Po
- 物种Sus scrofa; Porcine (Pig,猪) 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1.56-100ng/mL
- 灵敏度最小可检测剂量小于等于0.64ng/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
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特异性
本试剂盒用于检测防御素β1(DEFb1),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β1(DEFb1)(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) | 87-95 | 92 |
EDTA plasma(n=5) | 87-99 | 90 |
heparin plasma(n=5) | 98-105 | 101 |
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β1(DEFb1),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β1(DEFb1)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) | 94-101% | 92-105% | 90-97% | 85-99% |
EDTA plasma(n=5) | 81-90% | 90-97% | 93-103% | 89-98% |
heparin plasma(n=5) | 78-92% | 86-93% | 92-105% | 78-101% |
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β1(DEFb1)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β1(DEFb1)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β1(DEFb1)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β1(DEFb1)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:Sus scrofa; Porcine (Pig,猪) | 应用(仅供研究使用,不用于临床诊断!) |
RPB373Po01 | 防御素β1(DEFb1)重组蛋白 | Positive Control; Immunogen; SDS-PAGE; WB. |
PAB373Po01 | 防御素β1(DEFb1)多克隆抗体 | WB; IHC; ICC; IP. |
LAB373Po81 | 防御素β1(DEFb1)多克隆抗体(异硫氰酸荧光素标记) | WB; IHC; ICC; IF. |
LAB373Po71 | 防御素β1(DEFb1)多克隆抗体(生物素标记) | WB; IHC; ICC. |
MAB373Po21 | 防御素β1(DEFb1)单克隆抗体 | WB; IHC; ICC; IP. |
SEB373Po | 防御素β1(DEFb1)检测试剂盒(酶联免疫吸附试验法) | Enzyme-linked immunosorbent assay for Antigen Detection. |
LMB373Po | 防御素β1(DEFb1)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 |
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] |