A stable and abundant inflammatory mediator
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Labeled Version(s)
10007858Leukotriene E4-d5
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Leukotriene E4

Item No. 20410

Product Insert (PDF)Safety Data Sheet (SDS) (PDF)
Technical Information
Formal Name
5S-hydroxy-6R-(S-cysteinyl)-7E,9E,11Z,14Z-eicosatetraenoic acid
CAS Number
75715-89-8
Synonyms
  • LTE4
Molecular Formula
C23H37NO5S
Formula Weight
439.6
Purity
≥97%
Formulation
A 100 µg/ml solution in ethanol
Solubility(Learn about Variance in Solubility)
DMF: 50 mg/mlDMSO: 50 mg/mlEthanol: 50 mg/mlPBS pH 7.2: 0.1 mg/ml
λmax
281 nm
SMILES
CCCCC/C=C\C/C=C\C=C\C=C\[C@@H](SC[C@H](N)C(O)=O)[C@@H](O)CCCC(O)=O
InChi Code
InChI=1S/C23H37NO5S/c1-2-3-4-5-6-7-8-9-10-11-12-13-16-21(30-18-19(24)23(28)29)20(25)15-14-17-22(26)27/h6-7,9-13,16,19-21,25H,2-5,8,14-15,17-18,24H2,1H3,(H,26,27)(H,28,29)/b7-6-,10-9-,12-11+,16-13+/t19?,20-,21+/m0/s1
InChi Key
OTZRAYGBFWZKMX-MPWKMEBCSA-N
Shipping & Storage Information
Storage
-80°C
Shipping
Dry ice in continental US; may vary elsewhere
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Certificates of Analysis & Batch Specific Data

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    25 µg

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    Product Description

    Leukotriene E4 (LTE4) is produced by the action of dipeptidase on LTD4, leaving only the cysteinyl group still attached to the fatty acid backbone.1 It is one of the constituents of slow-reacting substance of anaphylaxis (SRS-A).2 LTE4 is considerably less active (8 to 12-fold) than LTC4 in the biological activities characteristic of cysteinyl leukotrienes.1,3 Unlike LTC4 and LTD4, LTE4 accumulates in both plasma and urine. Therefore, urinary excretion of LTE4 is often used as an indicator of asthma.4,5,6 In humans, basal levels of LTE4 range from 1-100 pg/mg creatinine. In asthmatic patients, urinary LTE4 levels increase to 80-1,000 pg/mg creatinine.5

    WARNING This product is not for human or veterinary use.

    References & Product Citations
    Product Description References

    1. Bernström, K., and Hammarström, S. Metabolism of leukotriene D by porcine kidney. The Journal of Biological Chemisty 256(18), 9579-9582 (1981).

    2. Samuelsson, B. Leukotrienes: Mediators of immediate hypersensitivity reactions and inflammation. Science 220(4597), 568-575 (1983).

    3. Lefer, A.M. Leukotrienes as mediators of ischemia and shock. Biochem. Pharmacol. 35(2), 123-127 (1986).

    4. Kumlin, M., Stensvad, F., Larsson, L., et al. Validation and application of a new simple strategy for measurements of urinary leukotriene E4 in humans. Clin. Exp. Allergy 25(5), 467-479 (1995).

    5. Drazen, J.M., O'Brien, J., Sparrow, D., et al. Recovery of leukotriene E4 from the urine of patients with airway obstruction. Am. Rev. Respir. Dis. 146(1), 104-108 (1992).

    6. Kumlin, M., Dahlén, B., Björck, T., et al. Urinary excretion of leukotriene E4 and 11-dehydro-thromboxane B2 in response to bronchial provocations with allergen, aspirin, leukotriene D4, and histamine in asthmatics. Am. Rev. Respir. Dis. 146(1), 96-103 (1992).

    Product Citations

    Archambault, A.-S., Brassard, J., Bernatchez, É., et al. Human and mouse eosinophils differ in their ability to biosynthesize eicosanoids, docosanoids, the endocannabinoid 2-arachidonoyl-glycerol and its congeners. Cells 11(1), 141 (2022).

    Archambault, A.-S., Zaid, Y., Rakotoarivelo, V., et al. High levels of eicosanoids and docosanoids in the lungs of intubated COVID-19 patients. The FASEB Journal 35(6), e21666 (2021).

    Hartling, I., Cremonesi, A., Osuna, E., et al. Quantitative profiling of inflammatory and pro-resolving lipid mediators in human adolescents and mouse plasma using UHPLC-MS/MS. Clin. Chem. Lab. Med. 59(11), 1811-1823 (2021).

    Archambault, A.-S., Zaid, Y., Rakotoarivelo, V., et al. Lipid storm within the lungs of severe COVID-19 patients: Extensive levels of cyclooxygenase and lipoxygenase-derived inflammatory metabolites. medRxiv (2020).

    Brouwers, H., Jónasdóttir, H.S., Kuipers, M.E., et al. Anti-inflammatory and proresolving effects of the omega-6 polyunsaturated fatty acid adrenic acid. J. Immunol. 205(10), 2840-2849 (2020).

    Meriwether, D., Sulaiman, D., Volpe, C., et al. Apolipoprotein A-I mimetics mitigate intestinal inflammation in COX2-dependent inflammatory bowel disease model. J. Clin. Invest. 130, 3670-3685 (2019).

    Sorgi, C.A., Peti, A.P.F., Petta, T., et al. Comprehensive high-resolution multiple-reaction monitoring mass spectrometry for targeted eicosanoid assays. Sci. Data 5, 180167 (2018).

    Sasaki, A., Fukuda, H., Shiida, N., et al. Determination of ω-6 and ω-3 PUFA metabolites in human urine samples using UPLC/MS/MS. Anal. Bioanal. Chem. 407(6), 1625-1639 (2015).

    Qi, H.-Y., Daniels, M.P., Liu, Y., et al. A cytosolic phospholipase A2-initiated lipid mediator pathway induces autophagy in macrophages. J. Immunol. 187(10), 5286-5292 (2011).

    Ono, E., Mita, H., Taniguchi, M., et al. Concentration of 14,15-leukotriene C4 (eoxin C4) in bronchoalveolar lavage fluid. Clin. Exp. Allergy (2009).