{"id":1850,"date":"2020-08-18T13:29:51","date_gmt":"2020-08-18T13:29:51","guid":{"rendered":"https:\/\/meddists.com\/learn\/pre-clinical\/biochemistry\/biochemistry-of-the-metabolism\/lipid-metabolism\/synthesis-of-leukotrienes\/"},"modified":"2021-11-16T14:51:39","modified_gmt":"2021-11-16T12:51:39","slug":"synthesis-of-leukotrienes","status":"publish","type":"page","link":"https:\/\/meddists.com\/learn\/pre-clinical\/biochemistry\/biochemistry-of-the-metabolism\/lipid-metabolism\/synthesis-of-leukotrienes\/","title":{"rendered":"Synthesis of Leukotrienes"},"content":{"rendered":"\n

Leukotrienes are non-cyclic monocarboxylic acids built from 20 carbon atoms; there are one or two oxygen substituents other than the three double bonds. They are also capable to induce inflammation but via a different pathway, but that inflammation is more severe compared to the PGE induced ones.<\/div><\/p>\n\n\n\n
\"\"<\/a>
Figure 1. Synthesis of PGE and LEU<\/strong><\/figcaption><\/figure><\/div>\n\n\n\n

They are predominantly produced by cells of the immune system \u2014 macrophages, monocytes, neutrophils, and eosinophils. The cleavage (PLA2<\/sub>) is consistent with the prostanoids (Figure 1<\/strong>), but the lipoxygenase is immediately activated (non-haemolytic) and catalyzes the incorporation of oxygen (5\/12\/15 carbon) 5 is essential (Figure 2-3<\/strong>).<\/p>\n\n\n\n

\"\"<\/a>
Figure 2. Synthesis of LEU<\/strong><\/figcaption><\/figure><\/div>\n\n\n\n

Synthesis of Leukotriens<\/h2>\n<\/span>\n\n\n
  1. 5-lipoxygenase<\/strong> is a calcium-dependent enzyme and generates 5-HPETE<\/strong><\/li>
  2. The most important is when leukotriene A4<\/strong> is produced because there are already conjugated double ropes typical of leukotrienes<\/li>
  3. This may result in LTB4 and LTC4<\/strong> <\/li>
  4. LTB4 is generated by the introduction of water by a hydrolase calcium-dependent enzyme<\/li>
  5. When linked with glutathione (glutathione-S-transferase), LTC4 is formed<\/li><\/ol>\n\n\n\n

    Eicosanoids may also stimulate the synthesis of one another, e.g. peptide leukotrienes thromboxane<\/strong> in bronchial asthma.<\/p>\n\n\n\n

    Leukotrienes are primarily potentiated by chemotactic peptides, PAF, IgE responsive antigens, bacterial endotoxins, phagocytic triggers, and other eicosanoids.<\/p>\n\n\n<\/span>\n

    References<\/h2>\n<\/span>\n\n\n

    Snider MDS. Devlin\u2019s Textbook of Biochemistry with Clinical Correlations<\/strong>, the 8th Edition. John Wiley & Sons, Incorporated, 2020; 2019.<\/span> <\/p>\n<\/span>

    Synthesis of Leukotriens<\/h2>

    References<\/h2><\/div>","protected":false},"excerpt":{"rendered":"

    They are predominantly produced by cells of the immune system \u2014 macrophages, monocytes, neutrophils, and eosinophils. The cleavage (PLA2) is consistent with the prostanoids (Figure 1), but the lipoxygenase is immediately activated (non-haemolytic) and catalyzes the incorporation of oxygen (5\/12\/15 carbon) 5 is essential (Figure 2-3). Synthesis of Leukotriens 5-lipoxygenase is a calcium-dependent enzyme and […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1712,"menu_order":13,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1850","page","type-page","status-publish","hentry"],"yoast_head":"\nSynthesis of Leukotrienes – Meddists<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/meddists.com\/learn\/pre-clinical\/biochemistry\/biochemistry-of-the-metabolism\/lipid-metabolism\/synthesis-of-leukotrienes\/\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" 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