Human lipolysaccharide binding protein,LBP ELISA Kit

Code CSB-E09629h
Size 96T,5×96T,10×96T
See More Details 24T ELISA kits trial application
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Product Details

Target Name lipopolysaccharide binding protein
Alternative Names BPI fold containing family D, member 2 ELISA Kit; Bpifd2 ELISA Kit; LBP ELISA Kit; LBP_HUMAN ELISA Kit; LBP1 ELISA Kit; Lipopolysaccharide binding protein ELISA Kit; Lipopolysaccharide-binding protein ELISA Kit; LPS binding protein ELISA Kit; Ly88 ELISA Kit; MGC22233 ELISA Kit; OTTHUMP00000030965 ELISA Kit; RP23-407H16.4 ELISA Kit
Abbreviation LBP
Uniprot No. P18428
Species Homo sapiens (Human)
Sample Types serum, plasma, tissue homogenates
Detection Range 0.625 μg/mL-40 μg/mL
Sensitivity 0.156 μg/mL
Assay Time 1-5h
Sample Volume 50-100ul
Detection Wavelength 450 nm
Research Area Immunology
Assay Principle quantitative
Measurement Sandwich
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.
To assess the linearity of the assay, samples were spiked with high concentrations of human LBP in various matrices and diluted with the Sample Diluent to produce samples with values within the dynamic range of the assay.
1:1Average %97
Range %92-102
1:2Average %95
Range %91-99
1:4Average %99
Range %96-108
1:8Average %94
Range %89-98
The recovery of human LBP 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 TypeAverage % RecoveryRange
Serum (n=5) 9992-108
EDTA plasma (n=4)8480-88
Typical Data
These standard curves are provided for demonstration only. A standard curve should be generated for each set of samples assayed.
402.795 2.694 2.745 2.613
202.232 2.131 2.182 2.050
101.464 1.443 1.454 1.322
50.812 0.823 0.818 0.686
2.50.425 0.415 0.420 0.288
1.250.300 0.311 0.306 0.174
0.6250.222 0.218 0.220 0.088
00.132 0.131 0.132  
and FAQs
Storage Store at 2-8°C. Please refer to protocol.
Lead Time 3-5 working days

Target Data

Function Plays a role in the innate immune response. Binds to the lipid A moiety of bacterial lipopolysaccharides (LPS), a glycolipid present in the outer membrane of all Gram-negative bacteria
Gene References into Functions
  1. This study shows a remarkable reversal of amyloid fibrin formation by LBP addition to the plasma of Parkinson's Disease patients . PMID: 29494603
  2. Serum LBP levels are associated with arterial stiffness, independent of obesity and traditional cardiovascular risk factors, especially in men with type 2 diabetes. PMID: 28486964
  3. novel observation that sCD14 compared with lipopolysaccharide binding protein, offers a preferred target to ameliorate TLR especially TLR4-induced inflammation and insulin resistance in human obesity and metabolic syndrome PMID: 26880233
  4. LBP, an endotoxemia associated protein might be used as an inflammatory biomarker of both infectious and non-infectious origins in HCV-infected subjects PMID: 28107471
  5. Data show that after matching for gender, age, and body mass index (BMI), serum lipopolysaccharide-binding protein (LBP) does not improve prediction of the development of type 2 diabetes mellitus (T2DM) independently. PMID: 25753130
  6. The main findings of this study are that, in acute stroke patients, levels of LBP, IL-10, IL-6 and CRP show a different time course in patients with and without post-stroke infection. PMID: 25613713
  7. Serum LBP level is significantly elevated in polycystic ovary syndrome women and is associated with insulin resistance. PMID: 26799617
  8. LBP serves not only as an extracellular LPS shuttle but in addition facilitates intracellular transport of LPS. PMID: 26804480
  9. LBP level was not significantly different in neutropenic systemic inflammatory response syndrome patients and sepsis patients. PMID: 26046926
  10. Report increased secretion of Fetuin A, LBP and HMGB-1 from subcutaneous adipose tissue in metabolic syndrome. PMID: 25978344
  11. Low levels of microbial translocation marker LBP are associated with sustained viral response after anti-HCV treatment in HIV-1/HCV co-infected patients PMID: 25785448
  12. serum level elevated in late-onset neonatal sepsis in very low birth weight infants PMID: 25014514
  13. Adjusting for body mass index and waist circumference, LBP levels remained significantly increased in metabolic syndrome and increased with increasing numbers of MetS risk factors. PMID: 25063948
  14. study suggested that elevated plasma LBP was associated with an increased risk of developing MetS among middle-aged and older Chinese, especially in normal-weight individuals. PMID: 24906952
  15. In preterm neonates born to asymptomatic women with PPROM, LBP in cord blood at delivery is an excellent diagnostic biomarker of Fetal inflammatory response syndrome/funisitis with prognostic potential. PMID: 24335151
  16. report pre-ART IL-6 and LBP levels as well as IL-6, LBP and I-FABP levels during IRIS-event as potential biomarkers in TB-IRIS PMID: 24312369
  17. In childnre, LBP was independently associated with BMI and with measures of obstructive sleep apnea severity as well as with metabolic dysfunction, particularly insulin resistance as indicated by the homeostasis model assessment of insulin resistance. PMID: 24276451
  18. Suggest that the serum LBP concentration constitutes a reliable biologic marker for the diagnosis of a febrile urinary tract infection in children. PMID: 23463341
  19. Mutations in the lipopolysaccharide binding protein impair innate immunity. PMID: 24120359
  20. Serum LBP concentrations increased with age. Overweight, obesity, and having metabolic syndrome (particularly, low HDL cholesterol levels) were associated with higher LBP concentrations PMID: 23349936
  21. expression in oral keratinocytes is stimulated by Porphyromonas gingivalis LPS PMID: 22736337
  22. Human lipopolysaccharide-binding protein (LBP) and CD14 independently deliver triacylated lipoproteins to Toll-like receptor 1 (TLR1) and TLR2 and enhance formation of the ternary signaling complex PMID: 23430250
  23. LBP is a surrogate marker of microbial translocation in association with physical functioning of older adults. PMID: 22960476
  24. Association of lipopolysaccharide-binding protein gene polymorphisms with cerebral infarction in a Chinese population PMID: 22476641
  25. our study demonstrated that an elevated LBP level of >15000 ng/ml may serve as a biomarker for the prediction and monitoring of aGVHD. PMID: 22552880
  26. During the first 14 days of postoperative sepsis, LBP plasma concentrations showed a time course that was very similar to CRP with a high concordance in the pattern of day-to-day changes PMID: 21901123
  27. The availability of commercial methods for the automated measurement of the soluble CD14 subtype presepsin and lipopolysaccharide binding protein represent a challenge for the evaluation in clinical practice of reliable markers of neonatal sepsis. PMID: 21740312
  28. Aseptic trauma primes the innate immune system for the posttraumatic release of lipopolysaccharide binding protein and sCD14 PMID: 21722015
  29. Cytokine concentrations in amniotic fluid during the mid-trimester did not differ with parity or fetal gender. IL-6, IL-8, and LBP levels appeared stable with gestational week (GW), whereas GW significantly influenced TNF-alpha concentrations. PMID: 21702700
  30. LBP measurements performed shortly after preterm premature rupture of membranes, are not of value either in the prediction of newborn's infection, or in the prognosis of latency period duration. PMID: 21353369
  31. This study highlights the LBP rs2232596 and CD14 rs4914 polymorphisms as biomarkers for elevated colorectal carcinoma susceptibility in the Chinese Han population PMID: 21633598
  32. High LBP is associated with Crohn's disease. PMID: 20865702
  33. Elevated circulating LBP was associated with obesity, metabolic syndrome, and type 2 diabetes in apparently healthy Chinese. PMID: 20530747
  34. The association of the polymorphisms c.291C>T and c.613A>G suggest a role of LBP in the disease manifestation of infective endocarditis. PMID: 19560454
  35. Serial LBP serum measurements may offer a clinically useful biomarker for identification of patients with severe sepsis having the worst outcomes and the highest probability of developing sepsis-induced ARDS PMID: 19718443
  36. carboxyl-terminal domain of these closely related endotoxin-binding proteins dictates the route and host responses to complexes they form with endotoxin. PMID: 11773072
  37. a new and reliable infection marker after kidney transplantation PMID: 11976738
  38. Identification of single amino acid residues essential for the binding of lipopolysaccharide (LPS) to LPS binding protein (LBP) residues 86-99 by using an Ala-scanning library PMID: 11991204
  39. plasma factor LBP and cell surface receptor CD14 were necessary for LPS activation of p38, which was tightly associated with LPS priming of the PMN respiratory burst PMID: 12117913
  40. Besides a role in the detoxification of bacterial toxin present in the circulation, LBP-chylomicron complexes may be part of a local defense mechanism of the intestine against translocated bacterial toxin. PMID: 12538700
  41. innate immune recognition of LTA via LBP, CD14, and TLR-2 represents an important mechanism in the pathogenesis of systemic complications in the course of infectious diseases brought about by Gram-positive pathogens. while TLR-4 and MD-2 are not involved. PMID: 12594207
  42. Single nucleotide polymorphism of the LBP gene is not assciated with complicated sepsis after trauma. PMID: 12615620
  43. data support the hypothesis that lipopolysaccharide binding protein can inhibit cell responses to lipopolysaccharide(LPS) by inhibiting LPS transfer from membrane CD14 to the Toll-like receptor 4-MD-2 signaling receptor PMID: 12754215
  44. plays an essential role in the innate immune response to Gram-positive pneumococci PMID: 12932360
  45. In critically ill neonates aged over 48 h and children lipopolysaccharide binding protein is a better marker than procalcitonin, interleukin-6 and C-reactive protein. PMID: 15127192
  46. Dual role of LBP and CD14 in initiation of proinflammatory signaling and clearance or neutralization of LPS. PMID: 15618154
  47. studies suggest that SP-A could contribute to modulate Re-LPS responses by altering the competence of the LBP-CD14 receptor complex PMID: 15932345
  48. LBP mediates the fusion of lipid membranes and LPS aggregates. PMID: 16303759
  49. Human pulmonary LBP acts as an important modulator of the LPS response in the respiratory tract in vivo. PMID: 16493079
  50. Significantly elevated serum concentrations of LBP and sCD14 are found in severe sepsis patients. PMID: 16512634
  51. innate immune recognition of LTA is organ-specific with negative regulation by LBP in serum-containing compartments and sensitive recognition in serum-free compartments like the lung PMID: 16928689
  52. Transcriptional regulation of the LBP gene contributes to the risk for developing gram-negative bacteremia and death after hematopoietic stem cell transplantation. PMID: 18056482
  53. Chlamydiaceae LPS has low binding affinities for LPS recognition molecules such as CD14 and LBP and exhibit weak biological activities against host immune cells including monocytes. PMID: 18056918
  54. Lipopolysaccharide binding protein and sCD14 are not produced as acute phase proteins in cardiac surgery PMID: 18288274
  55. The CR3-mediated phagocytosis of Neisseria meningitidis required the presence of lipopolysaccharide-binding protein, LBP. PMID: 18397383
  56. Oxidized phospholipid inhibition of toll-like receptor (TLR) signaling is restricted to TLR2 and TLR4: roles for CD14, LPS-binding protein, and MD2 as targets for specificity of inhibition. PMID: 18559343
  57. Increase of lipopolysaccharide binding protein and C-reactive protein levels after premature rupture of the membranes (PROM)seem to reflect intramniotic infection, but no cut-off values could be defined for the prediction of intraamniotic infection PMID: 18783308
  58. Lipopolysaccharide-binding protein and CD14 are increased in the bronchoalveolar lavage fluid of smokers PMID: 19010986
  59. LBP Phe436Leu polymorphisms showed no effect on chlamydial growth. PMID: 19522765
  60. This study strongly supports the involvement of LBP gene variants in severe sepsis susceptibility and reinforces the merit of further exploration of the role of lipopolysaccharide-binding protein in sepsis. PMID: 19707138
  61. mouse study showing that LBP is required for rapid acute-phase response to LPS but not for clearance of LPS from circulation PMID: 9338787

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Subcellular Location Secreted, Cytoplasmic granule membrane
Protein Families BPI/LBP/Plunc superfamily, BPI/LBP family
Tissue Specificity Detected in blood serum (at protein level).
Database Links

HGNC: 6517

OMIM: 151990

KEGG: hsa:3929

STRING: 9606.ENSP00000217407

UniGene: Hs.154078

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