Details
| Original language | English |
|---|---|
| Pages (from-to) | 19-29 |
| Number of pages | 11 |
| Journal | Prostaglandins Leukotrienes and Essential Fatty Acids |
| Volume | 89 |
| Issue number | 1 |
| Publication status | Published - Jul 2013 |
Abstract
Oxylipins, the oxidation products of unsaturated fatty acids (FA), are potent endogenous mediators being involved in the regulation of various biological processes such as inflammation, pain and blood coagulation. Compared to oxylipins derived from arachidonic acid (AA) by cyclooxygenase action, i.e. prostanoides, only limited information is available about the endogenous levels of hydroxy-, epoxy- and dihydroxy-FA of linoleic acid (LA), AA, α-linolenic acid (ALA), eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) in humans. Particularly, it is unknown how metabolic disorders affect endogenous oxylipin levels in humans. Therefore, in the present study we compared the serum concentrations of 44 oxylipins in 20 normolipidemic with 20 hyperlipidemic (total cholesterol >200 mg/dl; LDL-C>130 mg/dl; TG>150 mg/dl) men (age 29-51 y). The serum concentration varied strongly among subjects. For most hydroxy-, epoxy- and dihydroxy-FA the concentrations were comparable to those in plasma reported in earlier studies. Despite the significant change in blood lipid levels the hyperlipidemic group showed only minor differences in oxylipin levels. The hyperlipidemic subjects had a slightly higher serum concentration of 8,9-DiHETrE, 5-HEPE, 10,11-DiHDPE, and a lower concentration of 12,13-DiHOME, 12-HETE, 9,10-DiHODE, and 12,13-DiHODE compared to normolipidemic subjects. Overall the hydroxy-, epoxy- and dihydroxy-FA levels were not changed suggesting that mild combined hyperlipidemia has no apparent effect on the concentration of circulating oxylipins. By contrast, serum levels of several hydroxy-, epoxy-, and dihydroxy-FA are dependent on the individual status of the parent FA. Particularly, a strong correlation between the EPA content in the erythrocyte membrane and the serum concentration of EPA derived oxylipins was observed. Given that the synthesis of EPA from other n-3 FA in humans is low; this suggests that oxylipin levels can be directly influenced by the diet.
Keywords
- 12-Hydroxy-5,8,10,14-eicosatetraenoic Acid/analogs & derivatives, Adult, Arachidonic Acid/blood, Eicosapentaenoic Acid/analogs & derivatives, Fatty Acids, Omega-3/blood, Fatty Acids, Unsaturated/blood, Humans, Hyperlipidemias/blood, Male, Middle Aged, alpha-Linolenic Acid/blood
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Prostaglandins Leukotrienes and Essential Fatty Acids, Vol. 89, No. 1, 07.2013, p. 19-29.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Comparison of free serum oxylipin concentrations in hyper- vs. normolipidemic men
AU - Schuchardt, Jan Philipp
AU - Schmidt, Simone
AU - Kressel, Gaby
AU - Dong, Hua
AU - Willenberg, Ina
AU - Hammock, Bruce D
AU - Hahn, Andreas
AU - Schebb, Nils Helge
N1 - Funding information: This study was supported by a Marie Curie Career Integration Grant to NHS, a Grant of the German Federal Ministry of Education and Research (BMBF) to AH, a Kekulé Ph.D. fellowship of the Fonds der Chemischen Industrie to IW and grants of US National Institutes of Health (NIH) , Environmental Health (NIEHS, P42ES004699 and R01ES002710 ) and Diabetes and Digestive and Kidney Diseases (NIDDK, U24DK097154 ) and the West Coast Central Comprehensive Metabolomics Resource Core (WC3MRC) to BDH. BDH is a George and Judy Marcus Senior Fellow of the American Asthma Association.
PY - 2013/7
Y1 - 2013/7
N2 - Oxylipins, the oxidation products of unsaturated fatty acids (FA), are potent endogenous mediators being involved in the regulation of various biological processes such as inflammation, pain and blood coagulation. Compared to oxylipins derived from arachidonic acid (AA) by cyclooxygenase action, i.e. prostanoides, only limited information is available about the endogenous levels of hydroxy-, epoxy- and dihydroxy-FA of linoleic acid (LA), AA, α-linolenic acid (ALA), eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) in humans. Particularly, it is unknown how metabolic disorders affect endogenous oxylipin levels in humans. Therefore, in the present study we compared the serum concentrations of 44 oxylipins in 20 normolipidemic with 20 hyperlipidemic (total cholesterol >200 mg/dl; LDL-C>130 mg/dl; TG>150 mg/dl) men (age 29-51 y). The serum concentration varied strongly among subjects. For most hydroxy-, epoxy- and dihydroxy-FA the concentrations were comparable to those in plasma reported in earlier studies. Despite the significant change in blood lipid levels the hyperlipidemic group showed only minor differences in oxylipin levels. The hyperlipidemic subjects had a slightly higher serum concentration of 8,9-DiHETrE, 5-HEPE, 10,11-DiHDPE, and a lower concentration of 12,13-DiHOME, 12-HETE, 9,10-DiHODE, and 12,13-DiHODE compared to normolipidemic subjects. Overall the hydroxy-, epoxy- and dihydroxy-FA levels were not changed suggesting that mild combined hyperlipidemia has no apparent effect on the concentration of circulating oxylipins. By contrast, serum levels of several hydroxy-, epoxy-, and dihydroxy-FA are dependent on the individual status of the parent FA. Particularly, a strong correlation between the EPA content in the erythrocyte membrane and the serum concentration of EPA derived oxylipins was observed. Given that the synthesis of EPA from other n-3 FA in humans is low; this suggests that oxylipin levels can be directly influenced by the diet.
AB - Oxylipins, the oxidation products of unsaturated fatty acids (FA), are potent endogenous mediators being involved in the regulation of various biological processes such as inflammation, pain and blood coagulation. Compared to oxylipins derived from arachidonic acid (AA) by cyclooxygenase action, i.e. prostanoides, only limited information is available about the endogenous levels of hydroxy-, epoxy- and dihydroxy-FA of linoleic acid (LA), AA, α-linolenic acid (ALA), eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) in humans. Particularly, it is unknown how metabolic disorders affect endogenous oxylipin levels in humans. Therefore, in the present study we compared the serum concentrations of 44 oxylipins in 20 normolipidemic with 20 hyperlipidemic (total cholesterol >200 mg/dl; LDL-C>130 mg/dl; TG>150 mg/dl) men (age 29-51 y). The serum concentration varied strongly among subjects. For most hydroxy-, epoxy- and dihydroxy-FA the concentrations were comparable to those in plasma reported in earlier studies. Despite the significant change in blood lipid levels the hyperlipidemic group showed only minor differences in oxylipin levels. The hyperlipidemic subjects had a slightly higher serum concentration of 8,9-DiHETrE, 5-HEPE, 10,11-DiHDPE, and a lower concentration of 12,13-DiHOME, 12-HETE, 9,10-DiHODE, and 12,13-DiHODE compared to normolipidemic subjects. Overall the hydroxy-, epoxy- and dihydroxy-FA levels were not changed suggesting that mild combined hyperlipidemia has no apparent effect on the concentration of circulating oxylipins. By contrast, serum levels of several hydroxy-, epoxy-, and dihydroxy-FA are dependent on the individual status of the parent FA. Particularly, a strong correlation between the EPA content in the erythrocyte membrane and the serum concentration of EPA derived oxylipins was observed. Given that the synthesis of EPA from other n-3 FA in humans is low; this suggests that oxylipin levels can be directly influenced by the diet.
KW - 12-Hydroxy-5,8,10,14-eicosatetraenoic Acid/analogs & derivatives
KW - Adult
KW - Arachidonic Acid/blood
KW - Eicosapentaenoic Acid/analogs & derivatives
KW - Fatty Acids, Omega-3/blood
KW - Fatty Acids, Unsaturated/blood
KW - Humans
KW - Hyperlipidemias/blood
KW - Male
KW - Middle Aged
KW - alpha-Linolenic Acid/blood
U2 - 10.1016/j.plefa.2013.04.001
DO - 10.1016/j.plefa.2013.04.001
M3 - Article
C2 - 23694766
VL - 89
SP - 19
EP - 29
JO - Prostaglandins Leukotrienes and Essential Fatty Acids
JF - Prostaglandins Leukotrienes and Essential Fatty Acids
SN - 0952-3278
IS - 1
ER -