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Bilodeau JF, Qin Wei S, Larose J, Greffard K, Moisan V, Audibert F, Fraser WD, Julien P. Plasma F2-isoprostane class VI isomers at 12-18 weeks of pregnancy are associated with later occurrence of preeclampsia. Free Radic Biol Med 2015; 85:282-7. [PMID: 25998422 PMCID: PMC4856520 DOI: 10.1016/j.freeradbiomed.2015.05.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2015] [Revised: 04/11/2015] [Accepted: 05/11/2015] [Indexed: 12/27/2022]
Abstract
Preeclampsia (PE) has long been associated with early oxidative stress, although the symptoms occur later in pregnancy. We have hypothesized that the oxidative stress in PE, as characterized by the presence of F2-isoprostane (F2-isoP) isomers in late pregnancy, should already be present in plasma at the first regular visit of the obstetrical follow-up. There are 64 possible isomers of F2-isoPs derived from the oxidation of arachidonic acid (AA), but only one of these isomers has been investigated so far in PE, the classical 8-iso-PGF2α. Here, we have investigated two regioisomers of class III (8-iso-15(R)-PGF2α and 8-iso-PGF2α) and a mix of two isomers of class VI ((±)5-iPF2α-VI) in plasma samples collected prospectively at 12-18 weeks from normotensive controls (n = 60) and pregnant mothers who developed PE later in pregnancy (n = 33). The plasma samples were subjected to alkaline hydrolysis followed by liquid-liquid extraction to extract total F2-isoPs for later quantification by HPLC-MS/MS. The F2-isoPs were normalized to either plasma volume or polyunsaturated fatty acid (PUFA) levels measured by GC-FID in plasma phospholipids. Early in pregnancy, only the class VI F2-isoP isomers were found at concentrations significantly higher in women developing PE later in pregnancy (+13%; p = 0.0074). Normalization of F2-isoPs to their substrate, AA, or the omega-3 to omega-6 ratio improved the predictability of PE as determined by receiver operating characteristic (from area under the curve of 0.67 to 0.68 and 0.70 respectively). Interestingly, omega-3 fatty acids were 25% higher in the control group than in the PE group (P = 0.0225). Omega-6 PUFAs correlated with F2-Isop isomers only in cases of PE (r > 0.377; P >0.03, Spearman correlation). In sum, this study indicates that specific isomers of class VI are significant predictors of PE. This work also suggests that F2-isoP isomers are not all generated and eliminated to the same extent and are influenced by the PUFA composition of plasma phospholipids.
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Affiliation(s)
- Jean-François Bilodeau
- Axe reproduction, santé de la mère et de l׳enfant, CRCHU de Québec, 2705, boulevard Laurier, local T3-67, Québec, Canada G1V 4G2; Département d׳Obstétrique, Gynécologie et Reproduction, Faculté de médecine, Université Laval, Québec, Canada.
| | - Shu Qin Wei
- Department of Obstetrics and Gynecology, CRCHU Sainte-Justine and University of Montreal, Montreal, Quebec, Canada
| | - Jessica Larose
- Axe reproduction, santé de la mère et de l׳enfant, CRCHU de Québec, 2705, boulevard Laurier, local T3-67, Québec, Canada G1V 4G2
| | - Karine Greffard
- Axe endocrinologie et néphrologie, CRCHU de Québec, Québec, Canada; Centre de Recherche en endocrinologie moléculaire et oncologique et en génomique humaine (CREMOGH), Université Laval, Québec, Canada
| | - Vanessa Moisan
- Axe reproduction, santé de la mère et de l׳enfant, CRCHU de Québec, 2705, boulevard Laurier, local T3-67, Québec, Canada G1V 4G2
| | - Francois Audibert
- Department of Obstetrics and Gynecology, CRCHU Sainte-Justine and University of Montreal, Montreal, Quebec, Canada
| | - William D Fraser
- Department of Obstetrics and Gynecology, CRCHU Sainte-Justine and University of Montreal, Montreal, Quebec, Canada
| | - Pierre Julien
- Axe endocrinologie et néphrologie, CRCHU de Québec, Québec, Canada; Centre de Recherche en endocrinologie moléculaire et oncologique et en génomique humaine (CREMOGH), Université Laval, Québec, Canada; Département de Médecine, Faculté de médecine, Université Laval, Québec, Canada
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Dahwa R, Fassett RG, Wang Z, Briskey D, Mallard AR, Coombes JS. Variability of oxidative stress biomarkers in hemodialysis patients. Biomarkers 2014; 19:154-8. [DOI: 10.3109/1354750x.2013.867533] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Nikolaidis MG, Kyparos A, Vrabas IS. F2-isoprostane formation, measurement and interpretation: The role of exercise. Prog Lipid Res 2011; 50:89-103. [DOI: 10.1016/j.plipres.2010.10.002] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2010] [Accepted: 10/02/2010] [Indexed: 01/14/2023]
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Lee CYJ, Huang SH, Jenner AM, Halliwell B. Measurement of F2-isoprostanes, hydroxyeicosatetraenoic products, and oxysterols from a single plasma sample. Free Radic Biol Med 2008; 44:1314-22. [PMID: 18226605 DOI: 10.1016/j.freeradbiomed.2007.12.026] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2007] [Revised: 11/24/2007] [Accepted: 12/10/2007] [Indexed: 11/15/2022]
Abstract
Oxidized lipids such as F2-isoprostanes (F2-IsoPs), hydroxyeicosatetraenoic acid products (HETEs), and cholesterol oxidation products (COPs) are widely believed to be involved in multiple diseases. Usually, each product is measured individually in separate blood samples. In this study we describe a method allowing us to measure F2-IsoPs, HETEs, COPs, and arachidonate using a single sample. Plasma (1 ml) samples from healthy volunteers were diluted with heavy isotopic standards, hydrolyzed in alkali with organic solvent, and then subjected to anionic-exchange solid-phase extraction (SPE). After the SPE column was washed, hexane and hexane/ethyl acetate portions were collected and combined for COPs measurement. Thereafter the column was loaded with hexane/ethanol/acetic acid and fractions were collected for total F2-IsoPs, total HETEs, and arachidonate measurement. All compounds in the eluates were measured by gas chromatography-mass spectrometry. The efficiency of SPE and reproducibility for all compounds measured were high. Levels of total F2-IsoPs (0.45+/-0.26 ng/ml (n=157)), total HETEs (34.06+/-16.35 ng/ml (n=21)), total arachidonate (68.36+/-24.45 microg/ml (n=33)), and COPs (7-ketocholesterol, 12.25+/-6.56 ng/ml; 7beta-hydroxycholesterol, 6.32+/-3.46 ng/ml; 7alpha-hydroxycholesterol, 15.06+/-7.06 ng/ml; 24-hydroxycholesterol, 41.39+/-18.22 ng/ml; and 27-hydroxycholesterol, 29.08+/-16.79 ng/ml (n=26)) were recorded in healthy subjects (age range 20 to 66 years; average male to female ratio 1:1).
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Affiliation(s)
- Chung-Yung J Lee
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, 8 Medical Drive, Singapore 117597
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Hamzah J, Batty KT, Davis WA, Mori TA, Ching SYL, Croft KD, Davis TME. Retinol supplementation in murine Plasmodium berghei malaria: Effects on tissue levels, parasitaemia and lipid peroxidation. Int J Parasitol 2007; 37:525-37. [PMID: 17157853 DOI: 10.1016/j.ijpara.2006.10.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2006] [Revised: 10/15/2006] [Accepted: 10/17/2006] [Indexed: 11/20/2022]
Abstract
Reduced plasma retinol concentrations occur in human malaria but the benefits of supplementation remain uncertain. We assessed the in vivo efficacy of retinol administration, and its effect on lipid peroxidation, in a Plasmodium berghei murine model. Animals received vehicle (n=17) or retinol (i) before P. berghei inoculation (four doses), (ii) at parasitaemia 10-15% (three to four doses) or (iii) before and after inoculation (six to seven doses; n=15 in each group), with euthanasia on day 8 post-inoculation or when the parasitaemia exceeded 50%. Multiple-dose pre-inoculation retinol reduced endpoint parasitaemia by 24% (P=0.001 versus controls). A reduction of 18% (P=0.042) was observed when retinol was given to parasitaemic animals. Retinol was ineffective when given both before and after infection (11% reduction; P=0.47). Although retinol supplementation did not change plasma retinol concentrations, liver retinol content increased and correlated inversely with endpoint parasitaemia (r=-0.45, P=0.001). Malaria infection augmented concentrations of the free radical lipid peroxidation end-product F(2)-isoprostanes in plasma, erythrocytes and liver by 1.8-, 2.8- and 4.9-fold, respectively, but retinol supplementation had no effect on these increases. Consistent with some human malaria studies, prophylactic retinol reduces P. berghei parasitaemia. This effect relates to augmentation of tissue retinol stores rather than to retinol-associated changes in oxidant status.
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Affiliation(s)
- J Hamzah
- School of Medicine and Pharmacology, University of Western Australia, Fremantle Hospital, Fremantle, Western Australia, Australia
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