表面活性物質關聯(lián)蛋白A(SFTPA1)檢測試劑盒(酶聯(lián)免疫吸附試驗法)
ELISA Kit for Pulmonary Surfactant Associated Protein A1 (SFTPA1)
PRL; SFTPA; PSAP; PSPA; SFTP; SPA; COLEC4; PSP-A; SFTP1; SFTPA1B; SP-A1; Collectin-4; Alveolar proteinosis protein; 35 kDa pulmonary surfactant-associated protein; Surfactant Associated Protein A
- 編號SEA890Po
- 物種Sus scrofa; Porcine (Pig,豬) 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3.12-200ng/mL
- 靈敏度最小可檢測劑量小于等于1.14ng/mL.
- 樣本類型serum, plasma, tissue homogenates, lung lavage fluid 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
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特異性
本試劑盒用于檢測表面活性物質關聯(lián)蛋白A(SFTPA1),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表面活性物質關聯(lián)蛋白A(SFTPA1)(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) | 89-98 | 94 |
EDTA plasma(n=5) | 87-95 | 91 |
heparin plasma(n=5) | 98-105 | 102 |
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)加入適量的表面活性物質關聯(lián)蛋白A(SFTPA1),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表面活性物質關聯(lián)蛋白A(SFTPA1)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) | 96-105% | 92-105% | 98-105% | 80-98% |
EDTA plasma(n=5) | 84-101% | 78-91% | 87-94% | 80-102% |
heparin plasma(n=5) | 78-99% | 87-95% | 78-97% | 85-92% |
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
將表面活性物質關聯(lián)蛋白A(SFTPA1)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,其中的表面活性物質關聯(lián)蛋白A(SFTPA1)與連接于固相載體上的抗體結合,然后加入生物素化的表面活性物質關聯(lián)蛋白A(SFTPA1)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表面活性物質關聯(lián)蛋白A(SFTPA1)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:Sus scrofa; Porcine (Pig,豬) | 應用(僅供研究使用,不用于臨床診斷!) |
RPA890Po01 | 表面活性物質關聯(lián)蛋白A(SFTPA1)重組蛋白 | Positive Control; Immunogen; SDS-PAGE; WB. |
PAA890Po01 | 表面活性物質關聯(lián)蛋白A(SFTPA1)多克隆抗體 | WB; IHC; ICC; IP. |
MAA890Po21 | 表面活性物質關聯(lián)蛋白A(SFTPA1)單克隆抗體 | WB; IHC; ICC; IP. |
SEA890Po | 表面活性物質關聯(lián)蛋白A(SFTPA1)檢測試劑盒(酶聯(lián)免疫吸附試驗法) | Enzyme-linked immunosorbent assay for Antigen Detection. |
LMA890Po | 表面活性物質關聯(lián)蛋白A(SFTPA1)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 |
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Plos one | Staphylococcus aureus and Pseudomonas aeruginosa Express and Secrete Human Surfactant Proteins [PubMed: PMC3551896] |
Plos one | The Detection of Surfactant Proteins A, B, C and D in the Human Brain and Their Regulation in Cerebral Infarction, Autoimmune Conditions and Infections of the CNS [PubMed: PMC3787032] |
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Mol Med Rep | Expression of surfactant protein-A in exhaled breath condensate of patients with chronic obstructive pulmonary disease [PubMed: 26707652] |
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Frontiers in Aging Neuroscience | Correlations?of?Ventricular?Enlargement?with?Rheologically?Active?SurfactantProteins?in?Cerebrospinal?Fluid. [pubmed:28101052] |
Frontiers in?Aging?Neuroscience | Correlations of Ventricular Enlargement with Rheologically Active Surfactant Proteins in Cerebrospinal Fluid [PMC5209370] |
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PLOS ONE | Organic barn dust inhibits surfactant protein D production through protein kinase-c alpha dependent increase of GPR116 [Pubmed: 30543664] |
Molecular Neurobiology | Elevated levels of multifunctional surfactant proteins in cerebrospinal fluid are associated with signs of increased cerebrospinal fluid flow in cranial magnetic?… [Doi: 10.1007/s12035-017-0835-5] |
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Antioxidants (Basel) | Oxidative Stress and Inflammatory Mediators in Exhaled Breath Condensate of Patients with Pulmonary Tuberculosis. A Pilot Study with a Biomarker Perspective [34679707] |