Lipoxins pp 39-49 | Cite as

Lipoxygenase Catalyzed Oxygenation of Hydroxy Fatty Acids to Lipoxins

  • Hartmut Kühn
  • Alan R. Brash
  • Rainer Wiesner
  • Lutz Alder


The pure lipoxygenases from rabbit reticulocytes and soybeans convert a variety of substrates (arachidonic acid, 15-HPETE, 15-HETE, 5-HETE, various DiHETE isomers) to trihydroxy eicosanoids containing a conjugated tetraene system (lipoxins). In general, the methyl esters are better substrates for lipoxin formation than are the free acids. Lipoxygenase inhibitors (5,8,11,l4-eicosatetraynoic acid, nordihydroguaiaretic acid) strongly inhibit the lipoxin formation. The complete stereochemistry of the lipoxin B formed from 15S-HETE methyl ester has been established by co-chromatography with authentic standards on various types of HPLC columns, by GC/MS analysis, by gas liquid chromatography of the ozonolysis fragments of the menthoxy carbonyl derivatives and 1H-NMR studies. The molar absorption coefficient of the conjugated tetraenes was measured as ∈ 301=53,000.

The lipoxins formed from 15-HETE and various DiHETE isomers are formed exclusively via the oxygenation pathway as shown by experiments under an 17O2 atmosphere and/or by anaerobic incubations. Our results indicate that lipoxins can be synthesized via lipoxygenase-catalyzed sequential oxygenation of polyenoic fatty acids and their hydro(pero)xy derivatives.


Methyl Ester Molar Absorption Coefficient Hydroxy Fatty Acid Nordihydroguaiaretic Acid Soybean Lipoxygenase 
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Copyright information

© Springer Science+Business Media New York 1988

Authors and Affiliations

  • Hartmut Kühn
    • 1
  • Alan R. Brash
    • 1
  • Rainer Wiesner
    • 2
  • Lutz Alder
    • 3
  1. 1.Division of Clinical PharmacologyVanderbilt UniversityNashvilleUSA
  2. 2.Institute for BiochemistryHumboldt UniversityBerlinGerman Democratic Republic
  3. 3.Department of ChemistryHumboldt UniversityBerlinGerman Democratic Republic

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