Conjugated linoleicacid, a naturally occurring fatty acid, is present in ruminant meat and dairy products and is produced by a bio-hydrogenation process in the rumen. In this case, the predominant isomer formed is 9cis, 11trans.
9(Z),11(E)-Conjugated linoleicacid is an isomer of linoleicacid that has been found in beef and milk fat.1It binds to peroxisome proliferator-activated receptor α (PPARα; IC50= 140 nM) and activates the receptor in a reporter assay using COS-1 cells expressing mouse PPARα when used at a concentration of 100 μM.29(Z),11(E)-Conjugated linoleicacid inhibits TNF-α-inducedGLUT4expression and increases insulin-stimulated glucose transport in 3T3-L1 adipocytes.3Dietary administration of 9(Z)11(E)-conjugated linoleicacid reduces serum fasting glucose, insulin, and triglyceride levels and decreases white adipose tissue macrophage infiltration inob obmice. It also increases body weight gain and body fat in weanling mice.4[Matreya, LLC. Catalog No. 1278] 1.Shultz, T.D., Chew, B.P., Seaman, W.R., et al.Inhibitory effect of conjugated dienoic derivatives of linoleicacid and β-carotene on the in vitro growth of human cancer cellsCancer Lett.63(2)125-133(1992) 2.Moya-Camarena, S.Y., Heuvel, J.P.V., Blanchard, S.G., et al.Conjugated linoleicacid is a potent naturally occurring ligand and activator of PPARαJ. Lipid Res.40(8)1426-1433(1999) 3.Moloney, F., Toomey, S., Noone, E., et al.Antidiabetic effects of cis-9, trans-11-conjugated linoleicacid may be mediated via anti-inflammatory effects in white adipose tissueDiabetes56(3)574-582(2007) 4.Pariza, M.W., Park, Y., and Cook, M.E.The biologically active isomers of conjugated linoleicacidProg. Lipid Res.40(4)283-298(2001)
9(E),11(E)-12-nitro Conjugated linoleicacid (9(E),11(E)-12-nitro CLA) is a nitrated fatty acid. It is formed from 9(Z),11(E)-CLA upon exposure to acidified nitrite, peroxynitrite, gaseous nitrogen dioxide, or a combination of myeloperoxidase, hydrogen peroxide, and nitrite.1It is also formed in LPS-stimulated RAW 264.7 macrophages, an effect that can be reduced by the nitric oxide synthase (NOS) inhibitor L-NAME .29(E),11(E)-12-nitro CLA has been found in human plasma. 1.Woodcock, S.R., Salvatore, S.R., Bonacci, G., et al.Biomimetic nitration of conjugated linoleicacid: Formation and characterization of naturally occurring conjugated nitrodienesJ. Org. Chem.79(1)25-33(2014) 2.Bonacci, G., Baker, P.R.S., Salvatore, S.R., et al.Conjugated linoleicacid is a preferential substrate for fatty acid nitrationJ. Biol. Chem.287(53)44071-44082(2012)
9(E),11(E)-Conjugated LinoleicAcid (9(E),11(E)-CLA) belongs to a group of eight geometric isomers of linoleicacid, characterized by adjacent double bonds. This specific isomer, 9,11 all-trans linoleicacid, was first discovered in ground beef and is found in various dairy products as well. Notably, it has been shown to decrease mammary tumors in rats with dietary inclusion as minimal as 0.1%. [Matreya, LLC. Catalog No. 1181]
9(E),11(E)-9-nitro Conjugated LinoleicAcid (9E,11E-9-nitro CLA) is a nitrated fatty acid produced from 9Z,11E-CLA through exposure to acidified nitrite, peroxynitrite, gaseous nitrogen dioxide, or the combined action of myeloperoxidase, hydrogen peroxide, and nitrite. Additionally, it forms in LPS-stimulated RAW 264.7 macrophages, a process that can be inhibited by the nitric oxide synthase (NOS) inhibitor L-NAME. This compound has also been detected in human plasma.
9(Z),11(E)-Conjugated LinoleicAcid Methyl Ester, identified in lemon grass (C. flexuosus), serves as a standard for quantifying conjugated linoleicacids in thermally stressed olive oil and trans fats in bakery products. [Matreya, LLC. Catalog No. 1255]
9(E),11(E)-Conjugated LinoleicAcid Methyl Ester, identified in thermally stressed cooking oils, can serve as an indicator for the adulteration of olive oils with lower quality oils. [Matreya, LLC. Catalog No. 1257]
9(Z),11(Z)-Conjugated LinoleicAcid Methyl Ester serves as a standard in the quantification of conjugated linoleicacid methyl esters via GC-MS, according to Matreya, LLC. Catalog No. 1256.
10(E),12(Z)-Conjugated linoleicacid methyl ester serves as a standard for quantifying 10(E),12(Z)-conjugated linoleicacid in L. plantarum culture samples. [Matreya, LLC. Catalog No. 1254]
10-Nitrolinoleate is the product of nitration of linoleate by NO-derived reactive species. Other nitrolinoleates detected in human plasma and urine include 9-, 12-, and 13-nitrolinoleate. Nitrolinoleates activate peroxisome proliferator-activated receptor γ (PPARγ; Ki = 133 nM), inducing CD36 expression in macrophages, adipocyte differentiation, and glucose uptake. Nitrolinoleates can also be metabolized by smooth muscle cells to produce nitrite derivatives which in turn form NO, leading to increased cGMP production and smooth muscle relaxation. Through the same mechanism, nitrolinoleate-derived NO suppresses leukocyte adhesion, in part through nitrosation of CD40. Alteratively, nitrolinoleates can act independently of NO/cGMP and PPARγ signaling to suppress neutrophil and macrophage functions.