1
|
Wang Z, Yelamanchili D, Liu J, Gotto AM, Rosales C, Gillard BK, Pownall HJ. Serum opacity factor normalizes erythrocyte morphology in Scarb1 -/- mice in an HDL-free cholesterol-dependent way. J Lipid Res 2023; 64:100456. [PMID: 37821077 PMCID: PMC10641538 DOI: 10.1016/j.jlr.2023.100456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 09/16/2023] [Accepted: 10/05/2023] [Indexed: 10/13/2023] Open
Abstract
Compared with WT mice, HDL receptor-deficient (Scarb1-/-) mice have higher plasma levels of free cholesterol (FC)-rich HDL and exhibit multiple pathologies associated with a high mol% FC in ovaries, platelets, and erythrocytes, which are reversed by lowering HDL. Bacterial serum opacity factor (SOF) catalyzes the opacification of plasma by targeting and quantitatively converting HDL to neo HDL (HDL remnant), a cholesterol ester-rich microemulsion, and lipid-free APOA1. SOF delivery with an adeno-associated virus (AAVSOF) constitutively lowers plasma HDL-FC and reverses female infertility in Scarb1-/- mice in an HDL-dependent way. We tested whether AAVSOF delivery to Scarb1-/- mice will normalize erythrocyte morphology in an HDL-FC-dependent way. We determined erythrocyte morphology and FC content (mol%) in three groups-WT, untreated Scarb1-/- (control), and Scarb1-/- mice receiving AAVSOF-and correlated these with their respective HDL-mol% FC. Plasma-, HDL-, and tissue-lipid compositions were also determined. Plasma- and HDL-mol% FC positively correlated across all groups. Among Scarb1-/- mice, AAVSOF treatment normalized reticulocyte number, erythrocyte morphology, and erythrocyte-mol% FC. Erythrocyte-mol% FC positively correlated with HDL-mol% FC and with both the number of reticulocytes and abnormal erythrocytes. AAVSOF treatment also reduced FC of extravascular tissues to a lesser extent. HDL-FC spontaneously transfers from plasma HDL to cell membranes. AAVSOF treatment lowers erythrocyte-FC and normalizes erythrocyte morphology and lipid composition by reducing HDL-mol% FC.
Collapse
Affiliation(s)
- Ziyi Wang
- Center for Bioenergetics, Houston Methodist, Houston, TX, USA; Departments of Endocrinology and Xiangya Hospital, Central South University, Changsha, China
| | | | - Jing Liu
- Center for Bioenergetics, Houston Methodist, Houston, TX, USA; Departments of Endocrinology and Cardiovascular Medicine, Xiangya Hospital, Central South University, Changsha, China
| | - Antonio M Gotto
- Center for Bioenergetics, Houston Methodist, Houston, TX, USA; Department of Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Corina Rosales
- Center for Bioenergetics, Houston Methodist, Houston, TX, USA; Department of Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Baiba K Gillard
- Center for Bioenergetics, Houston Methodist, Houston, TX, USA; Department of Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Henry J Pownall
- Center for Bioenergetics, Houston Methodist, Houston, TX, USA; Department of Medicine, Weill Cornell Medicine, New York, NY, USA.
| |
Collapse
|
2
|
Cloos AS, Daenen LGM, Maja M, Stommen A, Vanderroost J, Van Der Smissen P, Rab M, Westerink J, Mignolet E, Larondelle Y, Terrasi R, Muccioli GG, Dumitru AC, Alsteens D, van Wijk R, Tyteca D. Impaired Cytoskeletal and Membrane Biophysical Properties of Acanthocytes in Hypobetalipoproteinemia - A Case Study. Front Physiol 2021; 12:638027. [PMID: 33708142 PMCID: PMC7940373 DOI: 10.3389/fphys.2021.638027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 01/25/2021] [Indexed: 12/03/2022] Open
Abstract
Familial hypobetalipoproteinemia is a metabolic disorder mainly caused by mutations in the apolipoprotein B gene. In its homozygous form it can lead without treatment to severe ophthalmological and neurological manifestations. In contrast, the heterozygous form is generally asymptomatic but associated with a low risk of cardiovascular disease. Acanthocytes or thorny red blood cells (RBCs) are described for both forms of the disease. However, those morphological changes are poorly characterized and their potential consequences for RBC functionality are not understood. Thus, in the present study, we asked whether, to what extent and how acanthocytes from a patient with heterozygous familial hypobetalipoproteinemia could exhibit altered RBC functionality. Acanthocytes represented 50% of the total RBC population and contained mitoTracker-positive surface patches, indicating the presence of mitochondrial fragments. While RBC osmotic fragility, calcium content and ATP homeostasis were preserved, a slight decrease of RBC deformability combined with an increase of intracellular free reactive oxygen species were observed. The spectrin cytoskeleton was altered, showing a lower density and an enrichment in patches. At the membrane level, no obvious modification of the RBC membrane fatty acids nor of the cholesterol content were detected but the ceramide species were all increased. Membrane stiffness and curvature were also increased whereas transversal asymmetry was preserved. In contrast, lateral asymmetry was highly impaired showing: (i) increased abundance and decreased functionality of sphingomyelin-enriched domains; (ii) cholesterol enrichment in spicules; and (iii) ceramide enrichment in patches. We propose that oxidative stress induces cytoskeletal alterations, leading to increased membrane stiffness and curvature and impaired lipid lateral distribution in domains and spicules. In addition, ceramide- and spectrin-enriched patches could result from a RBC maturation defect. Altogether, the data indicate that acanthocytes are associated with cytoskeletal and membrane lipid lateral asymmetry alterations, while deformability is only mildly impaired. In addition, familial hypobetalipoproteinemia might also affect RBC precursors leading to disturbed RBC maturation. This study paves the way for the potential use of membrane biophysics and lipid vital imaging as new methods for diagnosis of RBC disorders.
Collapse
Affiliation(s)
- Anne-Sophie Cloos
- CELL Unit & PICT Imaging Platform, de Duve Institute, UCLouvain, Brussels, Belgium
| | - Laura G M Daenen
- Department of Hematology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - Mauriane Maja
- CELL Unit & PICT Imaging Platform, de Duve Institute, UCLouvain, Brussels, Belgium
| | - Amaury Stommen
- CELL Unit & PICT Imaging Platform, de Duve Institute, UCLouvain, Brussels, Belgium
| | - Juliette Vanderroost
- CELL Unit & PICT Imaging Platform, de Duve Institute, UCLouvain, Brussels, Belgium
| | | | - Minke Rab
- Central Diagnostic Laboratory - Research, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - Jan Westerink
- Department of Vascular Medicine, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - Eric Mignolet
- Louvain Institute of Biomolecular Science and Technology, UCLouvain, Ottignies-Louvain-la-Neuve, Belgium
| | - Yvan Larondelle
- Louvain Institute of Biomolecular Science and Technology, UCLouvain, Ottignies-Louvain-la-Neuve, Belgium
| | - Romano Terrasi
- Bioanalysis and Pharmacology of Bioactive Lipids Research Group, Louvain Drug Research Institute, UCLouvain, Brussels, Belgium
| | - Giulio G Muccioli
- Bioanalysis and Pharmacology of Bioactive Lipids Research Group, Louvain Drug Research Institute, UCLouvain, Brussels, Belgium
| | - Andra C Dumitru
- Louvain Institute of Biomolecular Science and Technology, UCLouvain, Ottignies-Louvain-la-Neuve, Belgium
| | - David Alsteens
- Louvain Institute of Biomolecular Science and Technology, UCLouvain, Ottignies-Louvain-la-Neuve, Belgium
| | - Richard van Wijk
- Central Diagnostic Laboratory - Research, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - Donatienne Tyteca
- CELL Unit & PICT Imaging Platform, de Duve Institute, UCLouvain, Brussels, Belgium
| |
Collapse
|
3
|
Steck TL, Lange Y. Transverse distribution of plasma membrane bilayer cholesterol: Picking sides. Traffic 2018; 19:750-760. [PMID: 29896788 DOI: 10.1111/tra.12586] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 06/04/2018] [Accepted: 06/05/2018] [Indexed: 12/23/2022]
Abstract
The transverse asymmetry (sidedness) of phospholipids in plasma membrane bilayers is well characterized, distinctive, actively maintained and functionally important. In contrast, numerous studies using a variety of techniques have concluded that plasma membrane bilayer cholesterol is either mostly in the outer leaflet or the inner leaflet or is fairly evenly distributed. Sterols might simply partition according to their differing affinities for the asymmetrically disposed phospholipids, but some studies have proposed that it is actively transported to the outer leaflet. Other work suggests that the sterol is enriched in the inner leaflet, driven by either positive interactions with the phosphatidylethanolamine on that side or by its exclusion from the outer leaflet by the long chain sphingomyelin molecules therein. This uncertainty raises three questions: is plasma membrane cholesterol sidedness fixed in a given cell or cell type; is it generally the same among mammalian species; and does it serve specific physiological functions? This review grapples with these issues.
Collapse
Affiliation(s)
- Theodore L Steck
- Department of Biochemistry and Molecular Biology, University of Chicago, Chicago, Illinois
| | - Yvonne Lange
- Department of Pathology, Rush University Medical Center, Chicago, Illinois
| |
Collapse
|
4
|
Ru YX, Dong SX, Li Y, Zhao SX, Liang HY, Zhu XF, Zheng YZ, Zhang FK. A novel anemia associated with membranous cytoplasm degeneration in 16 patients: an ultrastructural study. Ultrastruct Pathol 2018; 42:350-357. [PMID: 29913101 DOI: 10.1080/01913123.2018.1485807] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
Sixteen patients with mild anemia and hemolysis were difficult to be classified into any known category based on laboratory examinations and light microscopy. To make a definite diagnosis and investigate the pathomechanism, ultrastructural study was performed on erythroid cells from 16 patients. Transmission electron microscopy demonstrated a series of alterations of cytoplasm, including cytoplasm sequestration, membranous transformation, and degeneration in erythroblasts and reticulocytes at different stages. The affected erythroblasts were usually complicated with chromatin condensation, karyorrhexis, nuclear membrane lysis, and megaloblastic changes. The reticulocytes with the cytoplasm alterations had a huge size from 10 um to 15 um in diameter. The membranous cytoplasm degeneration revealed a unique pathomechanism of dyserythropoiesis and ineffective erythropoiesis in 16 patients with anemia, and suggested a novel anemia category though more details remained to be investigated.
Collapse
Affiliation(s)
- Yong-Xin Ru
- a State Key Laboratory of Experimental Hematology, Peking Union Medical College , Institute of Hematology & Blood Diseases Hospital , Beijing , China
| | - Shu-Xu Dong
- a State Key Laboratory of Experimental Hematology, Peking Union Medical College , Institute of Hematology & Blood Diseases Hospital , Beijing , China
| | - Yuan Li
- a State Key Laboratory of Experimental Hematology, Peking Union Medical College , Institute of Hematology & Blood Diseases Hospital , Beijing , China
| | - Shi-Xuan Zhao
- a State Key Laboratory of Experimental Hematology, Peking Union Medical College , Institute of Hematology & Blood Diseases Hospital , Beijing , China
| | - Hao-Yue Liang
- a State Key Laboratory of Experimental Hematology, Peking Union Medical College , Institute of Hematology & Blood Diseases Hospital , Beijing , China
| | - Xiao-Fan Zhu
- a State Key Laboratory of Experimental Hematology, Peking Union Medical College , Institute of Hematology & Blood Diseases Hospital , Beijing , China
| | - Yi-Zhou Zheng
- a State Key Laboratory of Experimental Hematology, Peking Union Medical College , Institute of Hematology & Blood Diseases Hospital , Beijing , China
| | - Feng-Kui Zhang
- a State Key Laboratory of Experimental Hematology, Peking Union Medical College , Institute of Hematology & Blood Diseases Hospital , Beijing , China
| |
Collapse
|
5
|
Yu M, Chen B, Gong B, Shuai P, Wu ZZ, Lin W. Association of n3 and n6 polyunsaturated fatty acids in red blood cell membrane and plasma with severity of normal tension glaucoma. Int J Ophthalmol 2015; 8:476-83. [PMID: 26085994 DOI: 10.3980/j.issn.2222-3959.2015.03.08] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Accepted: 12/04/2014] [Indexed: 11/02/2022] Open
Abstract
AIM To determine whether red blood cell (RBC) membrane and plasma lipids, particularly long-chain polyunsaturated fatty acids such as eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), arachidonic acid (AA) are significantly correlated with severity of normal tension glaucoma (NTG). METHODS This study included 35 patients with NTG and 12 healthy normal control subjects, matched for age and sex with the study group. The stage of glaucoma was determined according to the Hodapp-Parrish-Anderson classification. Lipids were extracted from RBC membranes and plasma, and fatty acid methyl esters prepared and analyzed by gas chromatography-mass spectrometry (GC-MS). RESULTS When RBC lipids were analyzed, the levels of EPA, the levels of DHA and the ratio of n3 to n6 were positively associated with the Humphrey Perimetry mean deviation (MD) score (r=0.617, P<0.001; r=0.727, P<0.001 and r=0.720, P<0.001, respectively), while the level of AA was negatively associated with the MD score (r=-0.427, P=0.001). When plasma lipids were analyzed, there was a significant positive relationship between the levels of EPA and the MD score (r=0.648, P<0.001), and the levels of AA were inversely correlated with the MD score (r=-0.638, P<0.001). CONCLUSION The levels of n3 and n6 polyunsaturated fatty acids in RBC membrane and plasma lipids were associated with severity of NTG.
Collapse
Affiliation(s)
- Man Yu
- Department of Ophthalmology, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu 610072, Sichuan Province, China
| | - Bo Chen
- Department of Ophthalmology, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu 610072, Sichuan Province, China
| | - Bo Gong
- Sichuan Key Laboratory for Human Disease Gene Study, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu 610072, Sichuan Province, China
| | - Ping Shuai
- Center of Health Physical Examination and Health Management, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu 610072, Sichuan Province, China
| | - Zheng-Zheng Wu
- Department of Ophthalmology, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu 610072, Sichuan Province, China
| | - Wei Lin
- Department of Ophthalmology, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu 610072, Sichuan Province, China
| |
Collapse
|
6
|
Lin YH, Hanson JA, Strandjord SE, Salem NM, Dretsch MN, Haub MD, Hibbeln JR. Fast transmethylation of total lipids in dried blood by microwave irradiation and its application to a population study. Lipids 2014; 49:839-51. [PMID: 24986160 DOI: 10.1007/s11745-014-3918-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2013] [Accepted: 05/29/2014] [Indexed: 11/26/2022]
Abstract
A methodology combining finger-pricked blood sampling, microwave accelerated fatty acid assay, fast gas chromatography data acquisition, and automated data processing was developed, evaluated and applied to a population study. Finger-pricked blood was collected on filter paper previously impregnated with 0.05 mg of the antioxidant butylated hydroxytoluene and air-dried at room temperature. Transmethylation was accelerated by microwave irradiation in an explosion-proof multimode microwave reaction system. The chemical procedure was based on a one-step direct transmethylation procedure catalyzed by acetyl chloride. The short-term stability of PUFA in blood dried on filter paper and storage at room temperature was examined using venous blood. The recoveries ranged from 97 to 101 % for the categorized fatty acids as well as the ratios of n-6 to n-3 PUFA and the n-3 % highly unsaturated fatty acid. Specifically, recoveries were 99, 98, 97, and 97 % for linoleic acid (18:2n-6), arachidonic acid (ARA), α-linolenic acid (ALA), and docosahexaenoic acid (DHA), respectively. The mol% (mean ± SD, 95 % confidence interval) of fatty acid composition in subjects from the population study was determined as 36.2 ± 3.8 (35.8, 36.7), 23.2 ± 3.0 (22.8, 23.5), 36.8 ± 3.5 (36.4, 37.2) and 3.79 ± 1.0 (3.68, 3.91) for the saturated, monounsaturated, n-6 and n-3 PUFA, respectively. Individually, the mean mol% (95 % CI) was 22.6 (22.3, 22.9) for 18:2n-6, 9.5 (9.3, 9.7) for ARA, 0.51 (0.49, 0.53) for ALA, 0.42 (0.38, 0.47) for eicosapentaenoic acid (EPA), and 1.67 (1.61, 1.73) for DHA. This methodology provides an accelerated yet high-efficiency, chemically safe, and temperature-controlled transmethylation, with diverse laboratory applications including population studies.
Collapse
Affiliation(s)
- Yu Hong Lin
- Laboratory of Membrane Biochemistry and Biophysics, NIAAA, NIH, Bethesda, MD, USA,
| | | | | | | | | | | | | |
Collapse
|
7
|
Godin DV, Gray GR, Frohlich J. Erythrocyte Membrane Alterations in Lecithin: Cholesterol Acyltransferase Deficiency. Scandinavian Journal of Clinical and Laboratory Investigation 2011. [DOI: 10.1080/00365517809104920] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
8
|
|
9
|
|
10
|
|
11
|
|
12
|
|
13
|
|
14
|
|
15
|
|
16
|
|
17
|
|
18
|
|
19
|
|
20
|
|
21
|
|
22
|
|
23
|
|
24
|
|
25
|
|
26
|
|
27
|
|
28
|
Carlson LA, Boberg J, HÖgstedt B. Some physiological and clinical implications of lipid mobilization from adipose tissue
1. Compr Physiol 2011. [DOI: 10.1002/cphy.cp050163] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
29
|
Scow RO. Perfusion of isolated adipose tissue: FFA release and blood flow in rat parametrial fat body. Compr Physiol 2011. [DOI: 10.1002/cphy.cp050145] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
30
|
|
31
|
|
32
|
|
33
|
Red blood cell plasmalogens and docosahexaenoic acid are independently reduced in primary open-angle glaucoma. Exp Eye Res 2009; 89:840-53. [DOI: 10.1016/j.exer.2009.07.008] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2009] [Revised: 07/15/2009] [Accepted: 07/15/2009] [Indexed: 11/21/2022]
|
34
|
|
35
|
Takashimizu S, Shiraishi K, Watanabe N, Numata M, Kawazoe K, Miyachi H, Tokunaga M, Akatuka A, Matsuzaki S. Scanning Electron Microscopic Studies on Morphological Abnormalities of Erythrocytes in Alcoholic Liver Diseases. Alcohol Clin Exp Res 2006. [DOI: 10.1111/j.1530-0277.2000.tb00018.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shinji Takashimizu
- Department of Internal Medicine; Tokai University School of Medicine; Kanagawa Japan
| | - Koichi Shiraishi
- Department of Internal Medicine; Tokai University School of Medicine; Kanagawa Japan
| | - Norihito Watanabe
- Department of Internal Medicine; Tokai University School of Medicine; Kanagawa Japan
| | - Makoto Numata
- Department of Internal Medicine; Tokai University School of Medicine; Kanagawa Japan
| | - Kazuya Kawazoe
- Department of Internal Medicine; Tokai University School of Medicine; Kanagawa Japan
| | - Hayato Miyachi
- Department of Clinical Pathology; Tokai University School of Medicine; Kanagawa Japan
| | - Masayosi Tokunaga
- Laboratory for Structure and Function Research; Tokai University School of Medicine; Kanagawa Japan
| | - Akira Akatuka
- Laboratory for Structure and Function Research; Tokai University School of Medicine; Kanagawa Japan
| | - Shohei Matsuzaki
- Department of Internal Medicine; Tokai University School of Medicine; Kanagawa Japan
| |
Collapse
|
36
|
Berriot-Varoqueaux N, Aggerbeck LP, Samson-Bouma M, Wetterau JR. The role of the microsomal triglygeride transfer protein in abetalipoproteinemia. Annu Rev Nutr 2001; 20:663-97. [PMID: 10940349 DOI: 10.1146/annurev.nutr.20.1.663] [Citation(s) in RCA: 202] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The microsomal triglyceride transfer protein (MTP) is a dimeric lipid transfer protein consisting of protein disulfide isomerase and a unique 97-kDa subunit. In vitro, MTP accelerates the transport of triglyceride, cholesteryl ester, and phospholipid between membranes. It was recently demonstrated that abetalipoproteinemia, a hereditary disease characterized as an inability to produce chylomicrons and very low-density lipoproteins in the intestine and liver, respectively, results from mutations in the gene encoding the 97-kDa subunit of the microsomal triglyceride transfer protein. Downstream effects resulting from this defect include malnutrition, very low plasma cholesterol and triglyceride levels, altered lipid and protein compositions of membranes and lipoprotein particles, and vitamin deficiencies. Unless treated, abetalipoproteinemic subjects develop gastrointestinal, neurological, ophthalmological, and hematological abnormalities.
Collapse
Affiliation(s)
- N Berriot-Varoqueaux
- U327 Institut National de la Santé et de la Recherche Médicale, Faculté de Médecine Xavier Bichat, Université de Paris 7-Denis Diderot, 75870 Paris, France.
| | | | | | | |
Collapse
|
37
|
Davranov KD, Mirzaev TS, Sattarov AS. Phospholipids of the thermophilic fungusMucor miehei. Chem Nat Compd 2000. [DOI: 10.1007/bf02238334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
38
|
|
39
|
|
40
|
|
41
|
WAYS P, SIMON ER. THE ROLE OF SERUM IN ACANTHOCYTE AUTOHEMOLYSIS AND MEMBRANE LIPID COMPOSITION. J Clin Invest 1996; 43:1322-8. [PMID: 14192512 PMCID: PMC289607 DOI: 10.1172/jci105007] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|
42
|
|
43
|
BALINT JA, SPITZER HL, KYRIAKIDES EC. STUDIES OF RED-CELL STROMAL LIPIDS IN TAY-SACHS DISEASE AND OTHER LIPIDOSES. J Clin Invest 1996; 42:1661-8. [PMID: 14083158 PMCID: PMC289450 DOI: 10.1172/jci104852] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|
44
|
Mills DE, Murthy M, Galey WR. Dietary fatty acids, membrane transport, and oxidative sensitivity in human erythrocytes. Lipids 1995; 30:657-63. [PMID: 7564921 DOI: 10.1007/bf02537003] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
This study examined effects of dietary n-3 fatty acids on age-related changes in erythrocyte anion transport and susceptibility to oxidation. Blood was drawn from healthy adult volunteers before and after six weeks' supplementation (nine/group) with 4.0 g/day of safflower oil (containing 2.9 g n-6 fatty acids) or fish oil (containing 1.2 g long-chain n-3 fatty acids). Following density separation of young and old erythrocytes, membrane anion transport and cell membrane lipid composition were measured. Oxidative damage was measured in erythrocyte ghosts exposed to a free radical generator. Fish oil significantly increased 16:0 and 20:5n-3 in ghosts of both young and old cells, and 22:5n-3 and 22:6n-3 in old cells alone. Safflower oil increased 16:0, 18:0, 18:1n-9, and 22:5n-6 in ghosts of young cells only. The age-dependent increase in membrane anion transport (P < 0.01) was decreased by dietary fish oil supplementation, but not by safflower oil supplementation. Safflower oil and fish oil increased the susceptibility of both young and old erythrocytes to oxidative damage by free radical generation (P < 0.001).
Collapse
Affiliation(s)
- D E Mills
- Scientific Laboratory Division, New Mexico Department of Health, Albuquerque 87196-4700, USA
| | | | | |
Collapse
|
45
|
Affiliation(s)
- A J McColl
- Department of Pharmaceutical Sciences, University of Strathclyde, Glasgow, U.K
| | | |
Collapse
|
46
|
Sumikawa K, Mu Z, Inoue T, Okochi T, Yoshida T, Adachi K. Changes in erythrocyte membrane phospholipid composition induced by physical training and physical exercise. EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY AND OCCUPATIONAL PHYSIOLOGY 1993; 67:132-7. [PMID: 8223518 DOI: 10.1007/bf00376656] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The effects were investigated of physical training and exercise on lipids of the erythrocyte membrane of healthy students. Membrane cholesterol and phospholipids were analysed simultaneously by thin-layer chromatography with a flame ionization detector and the fatty acid composition was determined by gas chromatography. Physically trained students had similar physical characteristics to control students but a significantly higher aerobic capacity, estimated as the maximal oxygen uptake and anaerobic threshold. Of the phospholipids examined, only the content of membrane phosphatidylserine was significantly lower in the trained group. Fatty acid analysis showed that the amount of docosahexaenoic acid in membrane phosphatidylserine was lower in the trained group. There was no significant difference between the fatty acid compositions of membrane phosphatidylcholine in the two groups. Maximal exercise decreased membrane phosphatidylserine in the control group but not in the trained group. It also significantly decreased the relative amounts of unsaturated fatty acids in both phosphatidylcholine and phosphatidylserine in the untrained group. Maximal oxygen uptake was negatively correlated with the amount of erythrocyte membrane phosphatidylserine. These results would indicate that both physical training and acute exercise decrease phosphatidylserine and polyunsaturated fatty acids in erythrocyte membranes, possibly due to lipid peroxidation, suggesting limited enhancement of erythrocyte defense mechanisms in adaptation to chronic oxidative stress.
Collapse
Affiliation(s)
- K Sumikawa
- Faculty of Health and Sport Sciences, Osaka University, Japan
| | | | | | | | | | | |
Collapse
|
47
|
Mills DE, Galey WR, Dixon H. Effects of dietary fatty-acid supplementation on fatty-acid composition and deformability of young and old erythrocytes. BIOCHIMICA ET BIOPHYSICA ACTA 1993; 1149:313-8. [PMID: 8323949 DOI: 10.1016/0005-2736(93)90216-m] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The effects of cell age on erythrocyte phospholipid fatty-acid composition and deformability were examined in 20 healthy adults (11 male, 9 female) prior to and following 12 weeks of dietary supplementation with 3.5 g/day of safflower oil (high in n - 6 fatty acids) or fish oil (high in n - 3 fatty acids). In the absence of dietary supplementation, old erythrocytes demonstrated an increase in filtration time (P < 0.001), an increase in membrane phospholipid total n - 6 fatty acids (P < 0.01), and a decrease in total n - 3/total n - 6 ratio (P < 0.01) compared to young erythrocytes. Both safflower and fish oil supplementation attenuated age-related differences in membrane phospholipid total n - 6 and total n - 3 fatty acids. Fish oil supplementation also increased the proportion of n - 3 fatty acids (P < 0.01) and the n - 3/n - 6 ratio (P < 0.05) in the phospholipids of both young and old erythrocytes, and eliminated age-related differences in erythrocyte filtration time by reducing the relative filtration time of the old erythrocytes.
Collapse
Affiliation(s)
- D E Mills
- Department of Health Studies, University of Waterloo, Ontario, Canada
| | | | | |
Collapse
|
48
|
|
49
|
Abstract
Liver disease is associated with characteristic changes in the lipid composition of the surface coat of plasma lipoprotein particles. Cholesterol and lecithin molecules accumulate as hepatic secretion of lecithin-cholesterol acyltransferase decreases, and the arachidonate content, the precursor for eicosanoid production, is also reduced. By exchange and equilibration processes, such abnormal circulating lipoproteins should tend to induce corresponding changes in cell membrane lipid composition; studies in both human and experimental liver disease confirm that this does occur and that it is wide-spread. The correct functioning of membrane proteins, which serve as receptors or are responsible for enzymatic and transport processes, is most commonly dependent on the fluidity of their lipid bilayer matrix. Because cholesterol enrichment of biomembranes reduces bulk lipid fluidity, it can be predicted that extrahepatic membrane dysfunction might be a general feature of severe liver disease. This concept is supported by increasing experimental evidence and, as a consequence, it is proposed that many of the cellular disturbances and metabolic abnormalities accompanying hepatic disease result from, or are exacerbated by, lipoprotein-induced changes in membrane lipid composition and function. Importantly, this mechanism also suggests that drugs which can fluidise membranes, such as S-adenosyl-L-methionine (SAMe), might help ameliorate cellular dysfunction.
Collapse
Affiliation(s)
- J S Owen
- Academic Department of Medicine, Royal Free Hospital School of Medicine, London, United Kingdom
| |
Collapse
|
50
|
Affiliation(s)
- E Granot
- Department of Pediatrics, Hadassah University Hospital, Jerusalem, Israel
| | | |
Collapse
|