Human Tissue factor pathway inhibitor,TFPI ELISA Kit
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中文名稱:人組織因子途徑抑制物(TFPI)酶聯(lián)免疫試劑盒
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貨號(hào):CSB-E08260h
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規(guī)格:96T/48T
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價(jià)格:¥3200/¥2500
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其他:
產(chǎn)品詳情
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產(chǎn)品描述:人組織因子途徑抑制物(TFPI)酶聯(lián)免疫試劑盒(CSB-E08260h)為雙抗夾心法ELISA試劑盒,定量檢測(cè)血清、血漿、組織勻漿樣本中的TFPI含量。TFPI 即組織因子途徑抑制物,是一種天然存在的抗凝蛋白。它能抑制組織因子介導(dǎo)的凝血途徑的活化,在維持體內(nèi)凝血平衡中起重要作用。相關(guān)研究圍繞其抑制機(jī)制展開,探索其在血栓性疾病防治等方面的應(yīng)用潛力。試劑盒檢測(cè)范圍為0.782 ng/mL-50 ng/mL,靈敏度為0.293 ng/mL。適用于體外培養(yǎng)細(xì)胞模型、動(dòng)物實(shí)驗(yàn)樣本或臨床前研究中的TFPI水平檢測(cè);可為凝血機(jī)制研究、抗血栓藥物開發(fā)、炎癥相關(guān)血管病變或腫瘤轉(zhuǎn)移機(jī)制等科研方向提供數(shù)據(jù)支持。本品僅用于科研,不用于臨床診斷,產(chǎn)品具體參數(shù)及操作步驟詳見產(chǎn)品說明書。
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別名:Anti convertin ELISA Kit; EPI ELISA Kit; Extrinsic pathway inhibitor ELISA Kit; LACI ELISA Kit; Lipoprotein associated coagulation inhibitor ELISA Kit; Lipoprotein-associated coagulation inhibitor ELISA Kit; TFI ELISA Kit; TFPI 1 ELISA Kit; TFPI ELISA Kit; TFPI1 ELISA Kit; TFPI1_HUMAN ELISA Kit; Tissue factor pathway inhibitor (lipoprotein associated coagulation inhibitor) ELISA Kit; Tissue factor pathway inhibitor ELISA Kit
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縮寫:
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Uniprot No.:
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種屬:Homo sapiens (Human)
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樣本類型:serum, plasma, tissue homogenates
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檢測(cè)范圍:0.782 ng/mL-50 ng/mL
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靈敏度:0.293 ng/mL
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反應(yīng)時(shí)間:1-5h
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樣本體積:50-100ul
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檢測(cè)波長(zhǎng):450 nm
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研究領(lǐng)域:Cardiovascular
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測(cè)定原理:quantitative
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測(cè)定方法:Sandwich
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精密度:
Intra-assay Precision (Precision within an assay): CV%<8% Three samples of known concentration were tested twenty times on one plate to assess. Inter-assay Precision (Precision between assays): CV%<10% Three samples of known concentration were tested in twenty assays to assess. -
線性度:
To assess the linearity of the assay, samples were spiked with high concentrations of human TFPI in various matrices and diluted with the Sample Diluent to produce samples with values within the dynamic range of the assay. Sample Serum(n=4) 1:1 Average % 93 Range % 88-97 1:2 Average % 101 Range % 97-105 1:4 Average % 94 Range % 89-98 1:8 Average % 96 Range % 91-102 -
回收率:
The recovery of human TFPI spiked to levels throughout the range of the assay in various matrices was evaluated. Samples were diluted prior to assay as directed in the Sample Preparation section. Sample Type Average % Recovery Range Serum (n=5) 94 89-98 EDTA plasma (n=4) 86 81-92 -
標(biāo)準(zhǔn)曲線:
These standard curves are provided for demonstration only. A standard curve should be generated for each set of samples assayed. ng/ml OD1 OD2 Average Corrected 50 2.519 2.623 2.571 2.440 25 2.021 2.154 2.088 1.957 12.5 1.434 1.456 1.445 1.314 6.25 0.813 0.838 0.826 0.695 3.125 0.436 0.445 0.441 0.310 1.563 0.304 0.310 0.307 0.176 0.782 0.221 0.216 0.219 0.088 0 0.130 0.131 0.131 -
數(shù)據(jù)處理:
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貨期:3-5 working days
相關(guān)產(chǎn)品
靶點(diǎn)詳情
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最新研究進(jìn)展:TFPI是一種血管內(nèi)皮細(xì)胞表達(dá)的抗凝血蛋白,可以通過抑制凝血酶的活性來防止血栓形成。近年來的研究表明,TFPI在多種疾病的發(fā)生和發(fā)展中起到重要作用,如心血管疾病、肺動(dòng)脈栓塞和癌癥等。
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功能:Inhibits factor X (X(a)) directly and, in a Xa-dependent way, inhibits VIIa/tissue factor activity, presumably by forming a quaternary Xa/LACI/VIIa/TF complex. It possesses an antithrombotic action and also the ability to associate with lipoproteins in plasma.
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基因功能參考文獻(xiàn):
- plasma level not different between pre-eclampsia and normal pregnancy PMID: 28521572
- Patients with early onset preeclampsia are characterised by an attenuated coagulation response characterised by reduced thrombin generation stimulated by low-dose TF and elevated plasma TFPI activity. PMID: 28569919
- Developed functional protein S assays that measure both the activated protein C- and TFPI-cofactor activities of protein S in plasma, which are hardly if at all affected by the FV Leiden mutation. PMID: 28211163
- These data indicate that both isoforms of TFPI are present in advanced plaques and that anti-inflammatory M2 macrophages may be a potential source of TFPI. PMID: 28482260
- Among the various candidate genes involved in acute rejection, CD47 inhibits monocyte/macrophage-mediated phagocytosis by identifying the CD47 signal regulatory protein alpha (SIRP-alpha) as self/non-self. Tissue factor pathway inhibitor (TFPI) is involved in the regulation of the coagulation pathway and is able to bind to another ligand of CD47, thrombospondin-1 (TSP-1). PMID: 28393401
- Tissue Factor Pathway Inhibitor Gene Polymorphism is associated with response to therapy in Colorectal Cancer. PMID: 26968713
- For the first time, we show that a TFPI variant is significantly associated with fibrinogen levels and risk of coronary artery disease. PMID: 28894953
- miR-27a/b and miR-494 regulate TFPIalpha expression; there may be a role of these miRNAs in the estrogen-mediated downregulation of TFPIalpha PMID: 26999003
- Genetic variations of the TFPI genes seem to be related with coronary artery disease, which likely cooperate with metabolic risk factor (diabetes mellitus) and play critical roles in the pathogenesis of coronary artery disease in Han Chinese. PMID: 28716011
- Cleavage of FV at Arg(1545) , which abolishes the anticoagulant properties of FV and commits FV to the procoagulant pathway, is inhibited by binding of the TFPIalpha C-terminus to the FV acidic region PMID: 27801970
- The aim of this study was to evaluate the concentration of TF and its inhibitor TFPI in blood plasma, the impact of traditional and non-traditional cardiovascular risk factors on their concentration and the impact of both markers of haemostasis on the severity of subclinical atherosclerosis. PMID: 28749986
- The results show that cholesterol crystals induce TFPI and cytokine expression in M2-polarized macrophages through activation of the endoplasmic reticulum stress pathway and that TFPI has a protective effect against TNF-alpha and IL-6 mediated inflammation. PMID: 28712870
- Among high-risk women, the tissue factor pathway inhibitor activity of patients with gestational vascular complications is higher than that in other patients. Hence, these markers could augment a screening strategy. PMID: 28328938
- TFPI single nucleotide polymorphism is associated with venous thromboembolism. PMID: 28421636
- a concentration of tissue factor pathway inhibitor was significantly lower in patients with essential thrombocythemia with JAK2 V617F mutation as compared with patients without the mutation PMID: 26945263
- This review presents a comprehensive understanding of TFPI structure, biochemistry, and cellular expression which is necessary to understand how it modulates bleeding in hemophilia and the physiological impact of therapeutic agents targeting TFPI. PMID: 27207418
- the main finding of the current study is the remarkable elevation in the plasma levels of both total and free TFPI in septic patients at baseline. The levels of both forms of the inhibitor remained elevated throughout the first 24 h with further elevation after enoxaparin administration. PMID: 26377606
- TFPI-1 was a valuable predictor of deep venous thrombosis and tumor metastasis in non-small cell lung cancer patients. PMID: 28246607
- Circulating FVII, FVIIa and TFPI were significantly elevated in women with severe preeclampsia in the absence of comparable changes in plasma TF levels. PMID: 26765308
- HIF-1alpha is involved in the transcriptional regulation of the TFPI gene, and suggests that a hypoxic microenvironment inside a breast tumor may induce a procoagulant state in breast cancer patients. PMID: 26598923
- ERalpha can interact with all three ERE half-sites in the TFPI 5'-flanking region. PMID: 26999742
- rs5940 and rs7586970 moderate TFPI plasma levels and are candidate risk factors for thrombosis, but the regulation of TFPI plasma levels involves genetic factors beyond the TFPI gene. Review. PMID: 25879386
- Tissue factor pathway inhibitor activity and APC resistance are related to coronary heart disease risk in women, but may not explain the increased CHD risk due to estrogen plus progestin therapy. PMID: 26681757
- Association between genetic polymorphisms and deep vein thrombosis in a Chinese population. PMID: 26233570
- coagulation system, TFPI play an important role in the pathogenesis of CRSwNP. PMID: 26163243
- A significant degradation of TFPI was induced by ROS exposure, resulting in a decreased ability to bind FXa. ROS induce a procoagulant state in endothelial cells by altering TFPI structure, resulting in inhibition of TFPI binding to Factor Xa PMID: 25712553
- TNFalpha and Stx-1 compared to TNFalpha alone leads to an increase in procoagulant TF on endothelial cells, which is explained by a significant decrease in TFPI not co-localized with TF and not to an increase in TF not co-localized with TFPI PMID: 25864889
- Direct inhibition of FXa by TFPIalpha inhibits thrombin generation and contributes to the downregulation of coagulation. PMID: 25348176
- Tissue factor pathway inhibitor-2 gene polymorphisms were associated with coronary atherosclerosis in the Chinese population PMID: 26496276
- This study indicates that genetic and phenotypic variation of both TFPIalpha and TFPIbeta, more than TF, are markers of cancer progression. PMID: 25882602
- Syndecan-3 and TFPI colocalize on the surface of endothelial-, smooth muscle-, and cancer cells PMID: 25617766
- Describe inhibition of tissue factor:factor VIIa-catalyzed factor IX and factor X activation by TFPI and TFPI constructs. PMID: 25163770
- Neither genetic polymorphisms nor the plasma levels of TFPI seem to act as direct risk factors for venous thromboembolism. PMID: 24448154
- Thrombin decreases TFPI expression in human pleural mesothelial cells. PMID: 25303460
- Colon TFPI levels are increased in ulcerative colitis. PMID: 24966616
- TFPI inhibits lectin pathway of complement activation by direct interaction with MASP-2. PMID: 25359215
- Most capillary endothelial cells of the cholecystitis group presented weak expression for TFPI. PMID: 24716194
- TFPI is an early biomarker in myocardial infarct and may explain the final infarct size. PMID: 24461489
- genetic polymorphism affects endogenous thrombin potential among FV Leiden carriers PMID: 24226152
- Data indicate that the protein S sex hormone-binding globulin (SHBG)-like domain was important for binding and enhancement of tissue factor pathway inhibitor (TFPI). PMID: 24740810
- Studies indicate differential expression of tissue factor pathway inhibitor isoforms TFPIalpha and TFPIbeta in platelets and endothelial cells. PMID: 24620349
- TFPI mRNA expression was increased in clear cell carcinoma (P<0.01). PMID: 24094893
- Both the protein S and the TFPI ratios were increased in patients with cirrhosis compared to controls. PMID: 23841464
- Small peptides blocking inhibition of factor Xa and tissue factor-factor VIIa by tissue factor pathway inhibitor (TFPI). PMID: 24275667
- Demonstrate a 5' untranslated region alternative splicing event that alters translation of TFPI isoforms produced via independent 3' splicing events within the same gene. PMID: 24233486
- PS exerts anticoagulant cofactor activity with TFPIalpha from any physiological pool, likely by localizing TFPIalpha to membrane surfaces, stabilizing its interaction with membrane-bound FXa, and slowing thrombin generation. PMID: 24233490
- Tissue factor pathway inhibitor-alpha inhibits prothrombinase during the initiation of blood coagulation. PMID: 24127605
- The east Texas bleeding disorder-associated F5(A2440G) mutations leads to the formation of the TFPIalpha:FV-short complex, which inhibits activation and propagation of coagulation. PMID: 23979162
- The effect of oral contraceptives on TFPI and PS is a possible explanation for the increased risk of venous thrombosis associated with oral contraceptives. PMID: 23407778
- tissue factor pathway inhibitor has a role in coagulation in hemostasis, particularly when FVIII is missing PMID: 23348798
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亞細(xì)胞定位:[Isoform Alpha]: Secreted.; [Isoform Beta]: Microsome membrane; Lipid-anchor, GPI-anchor.
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組織特異性:Mostly in endothelial cells.
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