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Kolar EA, Shi X, Clay EM, Moser AB, Lal B, Nirujogi RS, Pandey A, Bandaru VVR, Laterra J, Pei Z, Watkins PA. Very long-chain acyl-CoA synthetase 3 mediates onco-sphingolipid metabolism in malignant glioma. ACTA ACUST UNITED AC 2021; 9. [PMID: 34395855 DOI: 10.18103/mra.v9i5.2433] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Gliomas are the largest category of primary malignant brain tumors in adults, and glioblastomas account for nearly half of malignant gliomas. Glioblastomas are notoriously aggressive and drug-resistant, with a very poor 5 year survival rate of about 5%. New approaches to treatment are thus urgently needed. We previously identified an enzyme of fatty acid metabolism, very long-chain acyl-CoA synthetase 3 (ACSVL3), as a potential therapeutic target in glioblastoma. Using the glioblastoma cell line U87MG, we created a cell line with genomic deletion of ACSVL3 (U87-KO) and investigated potential mechanisms to explain how this enzyme supports the malignant properties of glioblastoma cells. Compared to U87MG cells, U87-KO cells grew slower and assumed a more normal morphology. They produced fewer, and far smaller, subcutaneous xenografts in nude mice. Acyl-CoA synthetases, including ACSVL3, convert fatty acids to their acyl-CoA derivatives, allowing participation in diverse downstream lipid pathways. We examined the effect of ACSVL3 depletion on several such pathways. Fatty acid degradation for energy production was not affected in U87-KO cells. Fatty acid synthesis, and incorporation of de novo synthesized fatty acids into membrane phospholipids needed for rapid tumor cell growth, was not significantly affected by lack of ACSVL3. In contrast, U87-KO cells exhibited evidence of altered sphingolipid metabolism. Levels of ceramides containing 18-22 carbon fatty acids were significantly lower in U87-KO cells. This paralleled the fatty acid substrate specificity profile of ACSVL3. The rate of incorporation of stearate, an 18-carbon saturated fatty acid, into ceramides was reduced in U87-KO cells, and proteomics revealed lower abundance of ceramide synthesis pathway enzymes. Sphingolipids, including gangliosides, are functional constituents of lipid rafts, membrane microdomains thought to be organizing centers for receptor-mediated signaling. Both raft morphology and ganglioside composition were altered by deficiency of ACSVL3. Finally, levels of sphingosine-1-phosphate, a sphingolipid signaling molecule, were reduced in U87-KO cells. We conclude that ACSVL3 supports the malignant behavior of U87MG cells, at least in part, by altering cellular sphingolipid metabolism.
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Affiliation(s)
- Elizabeth A Kolar
- Hugo W. Moser Research Institute at Kennedy Krieger, Baltimore, MD 21205
| | - Xiaohai Shi
- Hugo W. Moser Research Institute at Kennedy Krieger, Baltimore, MD 21205
| | - Emily M Clay
- Hugo W. Moser Research Institute at Kennedy Krieger, Baltimore, MD 21205
| | - Ann B Moser
- Hugo W. Moser Research Institute at Kennedy Krieger, Baltimore, MD 21205.,Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205
| | - Bachchu Lal
- Hugo W. Moser Research Institute at Kennedy Krieger, Baltimore, MD 21205.,Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205
| | - Raja Sekhar Nirujogi
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205
| | - Akhilesh Pandey
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205
| | | | - John Laterra
- Hugo W. Moser Research Institute at Kennedy Krieger, Baltimore, MD 21205.,Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205
| | - Zhengtong Pei
- Hugo W. Moser Research Institute at Kennedy Krieger, Baltimore, MD 21205.,Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205
| | - Paul A Watkins
- Hugo W. Moser Research Institute at Kennedy Krieger, Baltimore, MD 21205.,Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205
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Chatterjee S, Zheng L, Ma S, Bedja D, Bandaru VVR, Kim G, Rangecroft AB, Iocco D, Campbell SA. Management of metabolic syndrome and reduction in body weight in type II diabetic mice by inhibiting glycosphingolipid synthesis. Biochem Biophys Res Commun 2020; 525:455-461. [PMID: 32107002 DOI: 10.1016/j.bbrc.2020.02.104] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 02/15/2020] [Indexed: 12/26/2022]
Abstract
Metabolic syndrome is defined by hyperlipidemia and cardiovascular complications. We have examined whether inhibition of glycosphingolipid synthesis can interfere with metabolic syndrome in a male mouse model of type II diabetes (db/db). The db/db and control mice (C57/BL6) (n = 6) fed chow for 30 weeks received vehicle (5% Tween-80 in PBS; 100 μl), or a biopolymer-encapsulated D-threo-1-phenyl-2-decanoylamino-3-morpholino-1-propanol (BPD) glycosphingolipid synthesis inhibitor daily via oral gavage for 6 weeks. Echocardiography revealed increased Ao-IMT in db/db mice compared to control. However, BPD decreased Ao-IMT, monohexosylceramide and dihexosylceramide, LDL, triglycerides, glucose, and raised HDL levels in db/db mice. This was due to increased gene expression of HMG-CoA reductase, LDLr, SREBP2, and bile acids: Cy7-a hydroxylase, LXR and FXR, lipoprotein lipase, VLDL receptor and PPAR. Treatment also increased the expression of superoxide dismutase-II to reduce the pro-oxidant status in these mice. We observed that decreased cholesterol levels correlated with decreased cholesterol sensing proteins e.g. NPC1 gene/protein expression and mammalian target of rapamycin (mTORC-1) and reduced body weight. Thus, glycosphingolipid synthesis inhibition is a novel approach to manage metabolic syndrome and reduce body weight in diabetic mice and with potential applications in humans.
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Affiliation(s)
- Subroto Chatterjee
- Department of Pediatrics, Cardiology Division, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Baltimore, MD, 21287, USA.
| | - Lucy Zheng
- Department of Pediatrics, Cardiology Division, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Baltimore, MD, 21287, USA
| | - Sijia Ma
- Department of Pediatrics, Cardiology Division, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Baltimore, MD, 21287, USA
| | - Djahida Bedja
- Department of Defense, 8228 Scully Road, Aberdeen Proving Ground, MD, 21010, USA
| | - Veera Venkata Ratnam Bandaru
- Department of Defense, 8228 Scully Road, Aberdeen Proving Ground, MD, 21010, USA; Department of Pediatrics, Cardiology Division, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Baltimore, MD, 21287, USA
| | - Grace Kim
- Department of Pediatrics, Cardiology Division, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Baltimore, MD, 21287, USA
| | - Alexa B Rangecroft
- Department of Pediatrics, Cardiology Division, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Baltimore, MD, 21287, USA
| | - Domenica Iocco
- Department of Pediatrics, Cardiology Division, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Baltimore, MD, 21287, USA
| | - Sean A Campbell
- Department of Pediatrics, Cardiology Division, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Baltimore, MD, 21287, USA
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Chatterjee SB, Hou J, Bandaru VVR, Pezhouh MK, Syed Rifat Mannan AA, Sharma R. Lactosylceramide synthase β-1,4-GalT-V: A novel target for the diagnosis and therapy of human colorectal cancer. Biochem Biophys Res Commun 2019; 508:380-386. [DOI: 10.1016/j.bbrc.2018.11.149] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 11/16/2018] [Accepted: 11/21/2018] [Indexed: 02/07/2023]
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4
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Mielke MM, Haughey NJ, Han D, An Y, Bandaru VVR, Lyketsos CG, Ferrucci L, Resnick SM. The Association Between Plasma Ceramides and Sphingomyelins and Risk of Alzheimer's Disease Differs by Sex and APOE in the Baltimore Longitudinal Study of Aging. J Alzheimers Dis 2018; 60:819-828. [PMID: 28035934 DOI: 10.3233/jad-160925] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
BACKGROUND Cellular and animal studies demonstrated relationships between sphingolipid metabolism and Alzheimer's disease (AD) pathology. High blood ceramide levels have been shown to predict cognitive impairment and AD, but these studies had small sample sizes and did not assess differences in risk by sex or APOE genotype. OBJECTIVE To determine whether plasma ceramides and sphingomyelins were associated with risk of AD, and whether the association varied by sex and APOE genotype. METHODS Participants included 626 men and 366 women, aged 55 years and older, enrolled in the Baltimore Longitudinal Study of Aging. Plasma ceramides and sphingomyelins were determined using quantitative analyses performed on a high-performance liquid chromatography coupled electrospray ionization tandem mass spectrometer. Cox proportional hazards models, stratified by sex, were used to examine the relationship of plasma ceramides and sphingomyelins with risk of AD over a mean (SD) follow-up of 15.0 (7.0) years for men and 13.1 (5.9) years for women. RESULTS Among men, the highest tertile of most ceramides and sphingomyelins were associated with an increased risk of AD. Among women, there were no associations between any of the ceramides and risk of AD. In contrast, women in the highest tertile of most sphingomyelins had a reduced risk of AD, which was most pronounced among APOE ɛ4 carriers. CONCLUSION These results provide further evidence for the role of sphingolipid metabolism in AD and highlight the importance of considering sex and APOE genotype in assessing this relationship.
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Affiliation(s)
- Michelle M Mielke
- Division of Epidemiology, Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA.,Department of Neurology, Mayo Clinic, Rochester, MN, USA
| | - Norman J Haughey
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.,Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Dingfen Han
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Yang An
- Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | | | - Constantine G Lyketsos
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Luigi Ferrucci
- Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Susan M Resnick
- Laboratory of Behavioral Neuroscience, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
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Bandaru VVR, Vignola JN, Litvin SR, Packer AM, Rizkallah AS, Orsini DA, Young SA, Soni SD, diTargiani RC, Pennington MR, Capacio BR. Quantitative Method Development and Validation of Naloxone and 6α‐naloxol from Male African Green Monkey Plasma. FASEB J 2018. [DOI: 10.1096/fasebj.2018.32.1_supplement.lb93] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Justin N Vignola
- United States Army Medical Research Institute of Chemical DefenseGunpowderAberdeen Proving GroundMD
| | - Samantha R Litvin
- United States Army Medical Research Institute of Chemical DefenseGunpowderAberdeen Proving GroundMD
| | - Amber M Packer
- United States Army Medical Research Institute of Chemical DefenseGunpowderAberdeen Proving GroundMD
| | - Amy S Rizkallah
- United States Army Medical Research Institute of Chemical DefenseGunpowderAberdeen Proving GroundMD
| | - David A Orsini
- United States Army Medical Research Institute of Chemical DefenseGunpowderAberdeen Proving GroundMD
| | - Sheena A Young
- United States Army Medical Research Institute of Chemical DefenseGunpowderAberdeen Proving GroundMD
| | - Sunil D Soni
- United States Army Medical Research Institute of Chemical DefenseGunpowderAberdeen Proving GroundMD
| | - Robert C diTargiani
- United States Army Medical Research Institute of Chemical DefenseGunpowderAberdeen Proving GroundMD
| | - M Ross Pennington
- United States Army Medical Research Institute of Chemical DefenseGunpowderAberdeen Proving GroundMD
| | - Benedict R Capacio
- United States Army Medical Research Institute of Chemical DefenseGunpowderAberdeen Proving GroundMD
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Saleem M, Herrmann N, Dinoff A, Mielke MM, Oh PI, Shammi P, Cao X, Ratnam Bandaru VV, Haughey NJ, Lanctot KL, Li A. [P3–239]: A LIPIDOMICS APPROACH TO ASSESS PLASMA SPHINGOLIPIDS AS PREDICTORS OF VERBAL MEMORY PERFORMANCE IN CORONARY ARTERY DISEASE PATIENTS UNDERTAKING CARDIAC REHABILITATION: A C18:0 SIGNATURE FOR COGNITIVE RESPONSE TO EXERCISE. Alzheimers Dement 2017. [DOI: 10.1016/j.jalz.2017.06.1452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Mahwesh Saleem
- University of TorontoTorontoONCanada
- University Health Network Toronto Rehabilitation InstituteTorontoONCanada
- Neuropsychopharmacology Research GroupTorontoONCanada
- Sunnybrook Health Sciences CentreTorontoONCanada
- Sunnybrook Research InstituteTorontoONCanada
| | - Nathan Herrmann
- University of TorontoTorontoONCanada
- Neuropsychopharmacology Research GroupTorontoONCanada
- Sunnybrook Health Sciences CentreTorontoONCanada
- Sunnybrook Research InstituteTorontoONCanada
| | - Adam Dinoff
- University of TorontoTorontoONCanada
- University Health Network Toronto Rehabilitation InstituteTorontoONCanada
- Neuropsychopharmacology Research GroupTorontoONCanada
- Sunnybrook Health Sciences CentreTorontoONCanada
- Sunnybrook Research InstituteTorontoONCanada
| | | | - Paul I. Oh
- University Health Network Toronto Rehabilitation InstituteTorontoONCanada
- Sunnybrook Health Sciences CentreTorontoONCanada
| | | | - Xingshan Cao
- Sunnybrook Health Sciences CentreTorontoONCanada
| | | | | | - Krista L. Lanctot
- University of TorontoTorontoONCanada
- University Health Network Toronto Rehabilitation InstituteTorontoONCanada
- Neuropsychopharmacology Research GroupTorontoONCanada
- Sunnybrook Health Sciences CentreTorontoONCanada
- Sunnybrook Research InstituteTorontoONCanada
| | - Abby Li
- Sunnybrook Research InstituteTorontoONCanada
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Gonzalez CE, Venkatraman VK, An Y, Landman BA, Davatzikos C, Ratnam Bandaru VV, Haughey NJ, Ferrucci L, Mielke MM, Resnick SM. Peripheral sphingolipids are associated with variation in white matter microstructure in older adults. Neurobiol Aging 2016; 43:156-63. [PMID: 27255825 DOI: 10.1016/j.neurobiolaging.2016.04.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 04/01/2016] [Accepted: 04/12/2016] [Indexed: 12/29/2022]
Abstract
Sphingolipids serve important structural and functional roles in cellular membranes and myelin sheaths. Plasma sphingolipids have been shown to predict cognitive decline and Alzheimer's disease. However, the association between plasma sphingolipid levels and brain white matter (WM) microstructure has not been examined. We investigated whether plasma sphingolipids (ceramides and sphingomyelins) were associated with magnetic resonance imaging-based diffusion measures, fractional anisotropy (FA), and mean diffusivity, 10.5 years later in 17 WM regions of 150 cognitively normal adults (mean age 67.2). Elevated ceramide species (C20:0, C22:0, C22:1, and C24:1) were associated with lower FA in multiple WM regions, including total cerebral WM, anterior corona radiata, and the cingulum of the cingulate gyrus. Higher sphingomyelins (C18:1 and C20:1) were associated with lower FA in regions such as the anterior corona radiata and body of the corpus callosum. Furthermore, lower sphingomyelin to ceramide ratios (C22:0, C24:0, and C24:1) were associated with lower FA or higher mean diffusivity in regions including the superior and posterior corona radiata. However, although these associations were significant at the a priori p < 0.05, only associations with some regional diffusion measures for ceramide C22:0 and sphingomyelin C18:1 survived correction for multiple comparisons. These findings suggest plasma sphingolipids are associated with variation in WM microstructure in cognitively normal aging.
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Affiliation(s)
- Christopher E Gonzalez
- Laboratory of Behavioral Neuroscience, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Vijay K Venkatraman
- Laboratory of Behavioral Neuroscience, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Yang An
- Laboratory of Behavioral Neuroscience, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Bennett A Landman
- Institute of Imaging Science and Department of Electrical Engineering, Vanderbilt University, Nashville, TN, USA
| | | | | | - Norman J Haughey
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Luigi Ferrucci
- Laboratory of Behavioral Neuroscience, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Michelle M Mielke
- Department of Health Science Research, Mayo Clinic, Rochester, MN, USA; Department of Neurology, Mayo Clinic, Rochester, MN, USA.
| | - Susan M Resnick
- Laboratory of Behavioral Neuroscience, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
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8
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Mielke MM, Bandaru VVR, Han D, An Y, Resnick SM, Ferrucci L, Haughey NJ. Demographic and clinical variables affecting mid- to late-life trajectories of plasma ceramide and dihydroceramide species. Aging Cell 2015; 14:1014-23. [PMID: 26193443 PMCID: PMC4693456 DOI: 10.1111/acel.12369] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/07/2015] [Indexed: 11/27/2022] Open
Abstract
It has been increasingly recognized at the basic science level that perturbations in ceramide metabolism are associated with the development and progression of many age‐related diseases. However, the translation of this work to the clinic has lagged behind. Understanding the factors longitudinally associated with plasma ceramides and dihydroceramides (DHCer) at the population level and how these lipid levels change with age, and by sex, is important for the clinical development of future therapeutics and biomarkers focused on ceramide metabolism. We, therefore, examined factors cross‐sectionally and longitudinally associated with plasma concentrations of ceramides and DHCer among Baltimore Longitudinal Study of Aging participants (n = 992; 3960 total samples), aged 55 years and older, with plasma at a mean of 4.1 visits (range 2–6). Quantitative analyses were performed on a high‐performance liquid chromatography‐coupled electrospray ionization tandem mass spectrometer. Linear mixed models were used to assess the relationships between plasma ceramide and DHCer species and demographics, diseases, medications, and lifestyle factors. Women had higher plasma concentrations of most ceramide and DHCer species and showed steeper trajectories of age‐related increases compared to men. Ceramides and DHCer were more associated with waist–hip ratio than body mass index. Plasma cholesterol and triglycerides, prediabetes, and diabetes were associated with ceramides and DHCer, but the relationship showed specificity to the acyl chain length and saturation. These results demonstrate the importance of examining the individual species of ceramides and DHCer, and of establishing whether intra‐individual age‐ and sex‐specific changes occur in synchrony to disease onset and progression.
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Affiliation(s)
- Michelle M. Mielke
- Departments of Health Science Research and Neurology Mayo Clinic Rochester MN 55905USA
| | | | - Dingfen Han
- Psychiatry Johns Hopkins University School of Medicine Baltimore MD 21224USA
| | - Yang An
- Intramural Research Program National Institute on Aging National Institutes of Health Baltimore MD 21224USA
| | - Susan M. Resnick
- Intramural Research Program National Institute on Aging National Institutes of Health Baltimore MD 21224USA
| | - Luigi Ferrucci
- Intramural Research Program National Institute on Aging National Institutes of Health Baltimore MD 21224USA
| | - Norman J. Haughey
- Department of Neurology Johns Hopkins University School of Medicine Baltimore MD 21224USA
- Psychiatry Johns Hopkins University School of Medicine Baltimore MD 21224USA
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Rico JE, Bandaru VVR, Dorskind JM, Haughey NJ, McFadden JW. Plasma ceramides are elevated in overweight Holstein dairy cows experiencing greater lipolysis and insulin resistance during the transition from late pregnancy to early lactation. J Dairy Sci 2015; 98:7757-70. [PMID: 26342987 PMCID: PMC6075710 DOI: 10.3168/jds.2015-9519] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Accepted: 07/12/2015] [Indexed: 01/18/2023]
Abstract
Insulin resistance is a homeorhetic adaptation to parturition in dairy cows transitioning from late pregnancy to early lactation. An increase in prepartum adiposity can predispose periparturient cows to greater lipolysis and insulin resistance, thus increasing the risk for metabolic disease. Mechanisms mediating the development of insulin resistance in overweight peripartal dairy cows may depend on ceramide metabolism. The sphingolipid ceramide accumulates in plasma and tissues of overweight monogastric animals, and facilitates saturated fatty acid-induced insulin resistance. Considering this evidence, we hypothesized that plasma ceramides would be elevated in periparturient dairy cattle and that these sphingolipids would correlate with the magnitude of lipolysis and insulin resistance. To test our central hypothesis, multiparous Holstein cows were allocated into 2 groups according to their body condition score (BCS) at d -30 prepartum: lean (BCS <3.0; n=10) or overweight (BCS >4.0; n=11). Blood samples were collected at d -45, -30, -15, and -7, relative to expected parturition, and at d 4 postpartum. Plasma glucose, insulin, nonesterified fatty acids (NEFA), and β-hydroxybutyrate (BHBA) concentrations were measured, and insulin sensitivity was estimated. The concentrations of individual plasma ceramide and glycosylated ceramide were determined using liquid chromatography-based mass spectrometry. Results demonstrated that greater adiposity was associated with a greater loss in body condition during late pregnancy. Overweight cows had greater circulating concentrations of glucose, insulin, and NEFA, and lower insulin sensitivity relative to lean cows. We detected 30 different sphingolipids across 6 lipid classes with acyl chains ranging from 16 to 26 carbons. The most abundant plasma sphingolipids detected were C24:0-ceramide, C24:0-monohexosylceramide, and C16:0-lactosylceramide. Plasma concentrations of total ceramide and monohexosylceramide increased as lactation approached, and saturated ceramide and monohexosylceramide were elevated in cows with greater adiposity relative to those with a lean phenotype. Plasma ceramides (e.g., C24:0-ceramide) were positively correlated with plasma NEFA and inversely correlated with insulin sensitivity. Our data demonstrate a remodeled plasma sphingolipidome in dairy cows transitioning from late pregnancy to lactation characterized by a concomitant increase in plasma ceramides with the development of peripartal insulin resistance.
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Affiliation(s)
- J E Rico
- Division of Animal and Nutritional Sciences, West Virginia University, Morgantown 26505
| | - V V R Bandaru
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21287
| | - J M Dorskind
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21287
| | - N J Haughey
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21287
| | - J W McFadden
- Division of Animal and Nutritional Sciences, West Virginia University, Morgantown 26505.
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10
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Peterlin BL, Mielke MM, Dickens AM, Chatterjee S, Dash P, Alexander G, Vieira RVA, Bandaru VVR, Dorskind JM, Tietjen GE, Haughey NH. Interictal, circulating sphingolipids in women with episodic migraine: A case-control study. Neurology 2015; 85:1214-23. [PMID: 26354990 DOI: 10.1212/wnl.0000000000002004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Accepted: 05/06/2015] [Indexed: 01/30/2023] Open
Abstract
OBJECTIVE To evaluate interictal, circulating sphingolipids in women migraineurs. METHODS In the fasting state, serum samples were obtained pain-free from 88 women with episodic migraine (EM; n=52) and from controls (n=36). Sphingolipids were detected and quantified by high-performance liquid chromatography coupled with tandem mass spectrometry using multiple reaction monitoring. Multivariate logistic regression was used to examine the association between serum sphingolipids and EM odds. A recursive partitioning decision tree based on the serum concentrations of 10 sphingolipids was used to determine the presence or absence of EM in a subset of participants. RESULTS Total ceramide (EM 6,502.9 ng/mL vs controls 10,518.5 ng/mL; p<0.0001) and dihydroceramide (EM 39.3 ng/mL vs controls 63.1 ng/mL; p<0.0001) levels were decreased in those with EM as compared with controls. Using multivariate logistic regression, each SD increase in total ceramide (odds ratio [OR] 0.07; 95% confidence interval [CI]: 0.02, 0.22; p<0.001) and total dihydroceramide (OR 0.05; 95% CI: 0.01, 0.21; p<0.001) levels was associated with more than 92% reduced odds of migraine. Although crude sphingomyelin levels were not different in EM compared with controls, after adjustments, every SD increase in the sphingomyelin species C18:0 (OR 4.28; 95% CI: 1.87, 9.81; p=0.001) and C18:1 (OR 2.93; 95% CI: 1.55, 5.54; p=0.001) was associated with an increased odds of migraine. Recursive portioning models correctly classified 14 of 14 randomly selected participants as EM or control. CONCLUSION These results suggest that sphingolipid metabolism is altered in women with EM and that serum sphingolipid panels may have potential to differentiate EM presence or absence. CLASSIFICATION OF EVIDENCE This study provides Class III evidence that serum sphingolipid panels accurately distinguish women with migraine from women without migraine.
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Affiliation(s)
- B Lee Peterlin
- From the Department of Neurology (B.L.P., A.M.D., R.V.A.V., V.V.R.B., J.M.D., N.H.H.), Department of Pediatrics, Lipid Research Atherosclerosis Unit (S.C.), and Department of Psychiatry (N.H.H.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Health Sciences Research (M.M.M.), Division of Epidemiology, and Department of Neurology, Mayo Clinic, Rochester, MN; Department of Neurology (P.D.), Johns Hopkins Community Physicians, Baltimore, MD; Department of Neurology (G.A.), Drexel University College of Medicine, Philadelphia, PA; Department of Psychology (R.V.A.V.), Federal University of Rio Grande do Sul, Porto Alegre, Brazil; and Department of Neurology (G.E.T.), University of Toledo, OH.
| | - Michelle M Mielke
- From the Department of Neurology (B.L.P., A.M.D., R.V.A.V., V.V.R.B., J.M.D., N.H.H.), Department of Pediatrics, Lipid Research Atherosclerosis Unit (S.C.), and Department of Psychiatry (N.H.H.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Health Sciences Research (M.M.M.), Division of Epidemiology, and Department of Neurology, Mayo Clinic, Rochester, MN; Department of Neurology (P.D.), Johns Hopkins Community Physicians, Baltimore, MD; Department of Neurology (G.A.), Drexel University College of Medicine, Philadelphia, PA; Department of Psychology (R.V.A.V.), Federal University of Rio Grande do Sul, Porto Alegre, Brazil; and Department of Neurology (G.E.T.), University of Toledo, OH
| | - Alex M Dickens
- From the Department of Neurology (B.L.P., A.M.D., R.V.A.V., V.V.R.B., J.M.D., N.H.H.), Department of Pediatrics, Lipid Research Atherosclerosis Unit (S.C.), and Department of Psychiatry (N.H.H.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Health Sciences Research (M.M.M.), Division of Epidemiology, and Department of Neurology, Mayo Clinic, Rochester, MN; Department of Neurology (P.D.), Johns Hopkins Community Physicians, Baltimore, MD; Department of Neurology (G.A.), Drexel University College of Medicine, Philadelphia, PA; Department of Psychology (R.V.A.V.), Federal University of Rio Grande do Sul, Porto Alegre, Brazil; and Department of Neurology (G.E.T.), University of Toledo, OH
| | - Subroto Chatterjee
- From the Department of Neurology (B.L.P., A.M.D., R.V.A.V., V.V.R.B., J.M.D., N.H.H.), Department of Pediatrics, Lipid Research Atherosclerosis Unit (S.C.), and Department of Psychiatry (N.H.H.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Health Sciences Research (M.M.M.), Division of Epidemiology, and Department of Neurology, Mayo Clinic, Rochester, MN; Department of Neurology (P.D.), Johns Hopkins Community Physicians, Baltimore, MD; Department of Neurology (G.A.), Drexel University College of Medicine, Philadelphia, PA; Department of Psychology (R.V.A.V.), Federal University of Rio Grande do Sul, Porto Alegre, Brazil; and Department of Neurology (G.E.T.), University of Toledo, OH
| | - Paul Dash
- From the Department of Neurology (B.L.P., A.M.D., R.V.A.V., V.V.R.B., J.M.D., N.H.H.), Department of Pediatrics, Lipid Research Atherosclerosis Unit (S.C.), and Department of Psychiatry (N.H.H.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Health Sciences Research (M.M.M.), Division of Epidemiology, and Department of Neurology, Mayo Clinic, Rochester, MN; Department of Neurology (P.D.), Johns Hopkins Community Physicians, Baltimore, MD; Department of Neurology (G.A.), Drexel University College of Medicine, Philadelphia, PA; Department of Psychology (R.V.A.V.), Federal University of Rio Grande do Sul, Porto Alegre, Brazil; and Department of Neurology (G.E.T.), University of Toledo, OH
| | - Guillermo Alexander
- From the Department of Neurology (B.L.P., A.M.D., R.V.A.V., V.V.R.B., J.M.D., N.H.H.), Department of Pediatrics, Lipid Research Atherosclerosis Unit (S.C.), and Department of Psychiatry (N.H.H.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Health Sciences Research (M.M.M.), Division of Epidemiology, and Department of Neurology, Mayo Clinic, Rochester, MN; Department of Neurology (P.D.), Johns Hopkins Community Physicians, Baltimore, MD; Department of Neurology (G.A.), Drexel University College of Medicine, Philadelphia, PA; Department of Psychology (R.V.A.V.), Federal University of Rio Grande do Sul, Porto Alegre, Brazil; and Department of Neurology (G.E.T.), University of Toledo, OH
| | - Rebeca V A Vieira
- From the Department of Neurology (B.L.P., A.M.D., R.V.A.V., V.V.R.B., J.M.D., N.H.H.), Department of Pediatrics, Lipid Research Atherosclerosis Unit (S.C.), and Department of Psychiatry (N.H.H.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Health Sciences Research (M.M.M.), Division of Epidemiology, and Department of Neurology, Mayo Clinic, Rochester, MN; Department of Neurology (P.D.), Johns Hopkins Community Physicians, Baltimore, MD; Department of Neurology (G.A.), Drexel University College of Medicine, Philadelphia, PA; Department of Psychology (R.V.A.V.), Federal University of Rio Grande do Sul, Porto Alegre, Brazil; and Department of Neurology (G.E.T.), University of Toledo, OH
| | - Veera Venkata Ratnam Bandaru
- From the Department of Neurology (B.L.P., A.M.D., R.V.A.V., V.V.R.B., J.M.D., N.H.H.), Department of Pediatrics, Lipid Research Atherosclerosis Unit (S.C.), and Department of Psychiatry (N.H.H.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Health Sciences Research (M.M.M.), Division of Epidemiology, and Department of Neurology, Mayo Clinic, Rochester, MN; Department of Neurology (P.D.), Johns Hopkins Community Physicians, Baltimore, MD; Department of Neurology (G.A.), Drexel University College of Medicine, Philadelphia, PA; Department of Psychology (R.V.A.V.), Federal University of Rio Grande do Sul, Porto Alegre, Brazil; and Department of Neurology (G.E.T.), University of Toledo, OH
| | - Joelle M Dorskind
- From the Department of Neurology (B.L.P., A.M.D., R.V.A.V., V.V.R.B., J.M.D., N.H.H.), Department of Pediatrics, Lipid Research Atherosclerosis Unit (S.C.), and Department of Psychiatry (N.H.H.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Health Sciences Research (M.M.M.), Division of Epidemiology, and Department of Neurology, Mayo Clinic, Rochester, MN; Department of Neurology (P.D.), Johns Hopkins Community Physicians, Baltimore, MD; Department of Neurology (G.A.), Drexel University College of Medicine, Philadelphia, PA; Department of Psychology (R.V.A.V.), Federal University of Rio Grande do Sul, Porto Alegre, Brazil; and Department of Neurology (G.E.T.), University of Toledo, OH
| | - Gretchen E Tietjen
- From the Department of Neurology (B.L.P., A.M.D., R.V.A.V., V.V.R.B., J.M.D., N.H.H.), Department of Pediatrics, Lipid Research Atherosclerosis Unit (S.C.), and Department of Psychiatry (N.H.H.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Health Sciences Research (M.M.M.), Division of Epidemiology, and Department of Neurology, Mayo Clinic, Rochester, MN; Department of Neurology (P.D.), Johns Hopkins Community Physicians, Baltimore, MD; Department of Neurology (G.A.), Drexel University College of Medicine, Philadelphia, PA; Department of Psychology (R.V.A.V.), Federal University of Rio Grande do Sul, Porto Alegre, Brazil; and Department of Neurology (G.E.T.), University of Toledo, OH
| | - Norman H Haughey
- From the Department of Neurology (B.L.P., A.M.D., R.V.A.V., V.V.R.B., J.M.D., N.H.H.), Department of Pediatrics, Lipid Research Atherosclerosis Unit (S.C.), and Department of Psychiatry (N.H.H.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Health Sciences Research (M.M.M.), Division of Epidemiology, and Department of Neurology, Mayo Clinic, Rochester, MN; Department of Neurology (P.D.), Johns Hopkins Community Physicians, Baltimore, MD; Department of Neurology (G.A.), Drexel University College of Medicine, Philadelphia, PA; Department of Psychology (R.V.A.V.), Federal University of Rio Grande do Sul, Porto Alegre, Brazil; and Department of Neurology (G.E.T.), University of Toledo, OH
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11
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Gonzalez CE, Venkatraman VK, An Y, Landman B, Ratnam Bandaru VV, Haughey NJ, Ferrucci L, Mielke M, Resnick SM. P2‐170: Plasma ceramides predict age‐related differences in white matter microstructure. Alzheimers Dement 2015. [DOI: 10.1016/j.jalz.2015.06.709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
| | | | - Yang An
- National Institute on AgingBaltimoreMDUSA
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12
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Figuera-Losada M, Stathis M, Dorskind JM, Thomas AG, Bandaru VVR, Yoo SW, Westwood NJ, Rogers GW, McArthur JC, Haughey NJ, Slusher BS, Rojas C. Cambinol, a novel inhibitor of neutral sphingomyelinase 2 shows neuroprotective properties. PLoS One 2015; 10:e0124481. [PMID: 26010541 PMCID: PMC4444023 DOI: 10.1371/journal.pone.0124481] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2014] [Accepted: 03/10/2015] [Indexed: 11/18/2022] Open
Abstract
Ceramide is a bioactive lipid that plays an important role in stress responses leading to apoptosis, cell growth arrest and differentiation. Ceramide production is due in part to sphingomyelin hydrolysis by sphingomyelinases. In brain, neutral sphingomyelinase 2 (nSMase2) is expressed in neurons and increases in its activity and expression have been associated with pro-inflammatory conditions observed in Alzheimer's disease, multiple sclerosis and human immunodeficiency virus (HIV-1) patients. Increased nSMase2 activity translates into higher ceramide levels and neuronal cell death, which can be prevented by chemical or genetic inhibition of nSMase2 activity or expression. However, to date, there are no soluble, specific and potent small molecule inhibitor tool compounds for in vivo studies or as a starting point for medicinal chemistry optimization. Moreover, the majority of the known inhibitors were identified using bacterial, bovine or rat nSMase2. In an attempt to identify new inhibitor scaffolds, two activity assays were optimized as screening platform using the recombinant human enzyme. First, active hits were identified using a fluorescence-based high throughput compatible assay. Then, hits were confirmed using a 14C sphingomyelin-based direct activity assay. Pharmacologically active compounds and approved drugs were screened using this strategy which led to the identification of cambinol as a novel uncompetitive nSMase2 inhibitor (Ki = 7 μM). The inhibitory activity of cambinol for nSMase2 was approximately 10-fold more potent than for its previously known target, silence information regulator 1 and 2 (SIRT1/2). Cambinol decreased tumor necrosis factor-α or interleukin-1 β-induced increases of ceramide and cell death in primary neurons. A preliminary study of cambinol structure and activity allowed the identification of the main structural features required for nSMase2 inhibition. Cambinol and its analogs may be useful as nSMase2 inhibitor tool compounds to prevent ceramide-dependent neurodegeneration.
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Affiliation(s)
- Mariana Figuera-Losada
- Brain Science Institute Drug Discovery Program, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Marigo Stathis
- Brain Science Institute Drug Discovery Program, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Joelle M. Dorskind
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Ajit G. Thomas
- Brain Science Institute Drug Discovery Program, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Veera Venkata Ratnam Bandaru
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Seung-Wan Yoo
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Nicholas J. Westwood
- School of Chemistry and Biomedical Sciences Research Centre, University of Saint Andrews and EaStCHEM, North Haugh, Saint Andrews, Fife, KY16 9ST, United Kingdom
| | - Graeme W. Rogers
- School of Chemistry and Biomedical Sciences Research Centre, University of Saint Andrews and EaStCHEM, North Haugh, Saint Andrews, Fife, KY16 9ST, United Kingdom
| | - Justin C. McArthur
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Norman J. Haughey
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- Richard T. Johnson Division of Neuroimmunology and Neurological Infections, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- * E-mail: (NJH); (BSS); (CR)
| | - Barbara S. Slusher
- Brain Science Institute Drug Discovery Program, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- Department of Psychiatry, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- * E-mail: (NJH); (BSS); (CR)
| | - Camilo Rojas
- Brain Science Institute Drug Discovery Program, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- * E-mail: (NJH); (BSS); (CR)
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13
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Mielke MM, Bandaru VVR, Han D, An Y, Resnick SM, Ferrucci L, Haughey NJ. Factors affecting longitudinal trajectories of plasma sphingomyelins: the Baltimore Longitudinal Study of Aging. Aging Cell 2015; 14:112-21. [PMID: 25345489 PMCID: PMC4310757 DOI: 10.1111/acel.12275] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/02/2014] [Indexed: 12/12/2022] Open
Abstract
Sphingomyelin metabolism has been linked to several diseases and to longevity. However, few epidemiological studies have quantified individual plasma sphingomyelin species (identified by acyl-chain length and saturation) or their relationship between demographic factors and disease processes. In this study, we determined plasma concentrations of distinct sphingomyelin species in 992 individuals, aged 55 and older, enrolled in the Baltimore Longitudinal Study of Aging. Participants were followed, with serial measures, up to 6 visits and 38 years (3972 total samples). Quantitative analyses were performed on a high-performance liquid chromatography-coupled electrospray ionization tandem mass spectrometer. Linear mixed models were used to assess variation in specific sphingomyelin species and associations with demographics, diseases, medications or lifestyle factors, and plasma cholesterol and triglyceride levels. We found that most sphingomyelin species increased with age. Women had higher plasma levels of all sphingomyelin species and showed steeper trajectories of age-related increases compared to men. African Americans also showed higher circulating sphingomyelin concentrations compared to Caucasians. Diabetes, smoking, and plasma triglycerides were associated with lower levels of many sphingomyelins and dihydrosphingomyelins. Notably, these associations showed specificity to sphingomyelin acyl-chain length and saturation. These results demonstrate that longitudinal changes in circulating sphingomyelin levels are influenced by age, sex, race, lifestyle factors, and diseases. It will be important to further establish the intra-individual age- and sex-specific changes in each sphingomyelin species in relation to disease onset and progression.
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Affiliation(s)
- Michelle M. Mielke
- Department of Health Science Research and Neurology Mayo Clinic Rochester MN USA
| | | | - Dingfen Han
- Department of Psychiatry Johns Hopkins University School of Medicine Baltimore MD USA
| | - Yang An
- Intramural Research Program National Institute on Aging National Institutes of Health Baltimore MD USA
| | - Susan M. Resnick
- Intramural Research Program National Institute on Aging National Institutes of Health Baltimore MD USA
| | - Luigi Ferrucci
- Intramural Research Program National Institute on Aging National Institutes of Health Baltimore MD USA
| | - Norman J. Haughey
- Department of Neurology Johns Hopkins University School of Medicine Baltimore MD USA
- Department of Psychiatry Johns Hopkins University School of Medicine Baltimore MD USA
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14
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Bandaru VVR, Haughey NJ. Quantitative detection of free 24S-hydroxycholesterol, and 27-hydroxycholesterol from human serum. BMC Neurosci 2014; 15:137. [PMID: 25539717 PMCID: PMC4304132 DOI: 10.1186/s12868-014-0137-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Accepted: 12/17/2014] [Indexed: 03/25/2023] Open
Abstract
Background Cholesterol metabolism is important for the maintenance of myelin and neuronal membranes in the central nervous system. Blood concentrations of the brain specific cholesterol metabolite 24S-hydroxysterol to the peripheral metabolite 27-hydroxycholesterol may be useful surrogate markers for neurodegenerative diseases including Alzheimer’s disease, Huntington’s disease, HIV-Associated Neurocognitive Disorders, and Multiple Sclerosis. However, current methods to isolate hydroxycholesterols are labor intensive, prone to produce variable extraction efficiencies and do not discriminate between free and esterfied forms of hydroxycholesterols. Since free hydroxycholesterols are the biologically active form of these sterols, separating free from esterfied forms may provide a sensitive measure to identify disease-associated differences in brain sterol metabolism. Results We found that average human serum concentrations were 12.3 ± 4.79 ng/ml for free 24(s)-hydroxycholesterol and 17.7 ± 8.5 ng/ml for 27-hydroxycholesterol. Conclusion Serum measurements of these biologically active oxysterols may be useful surrogate measures for brain health in a variety of neurodegenerative conditions.
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Affiliation(s)
- Veera Venkata Ratnam Bandaru
- Department of Neurology, Richard T. Johnson Division of Neuroimmunology and Neurological Infections, The Johns Hopkins University School of Medicine, Carnegie 616A, 600 North Wolfe Street, Baltimore, 21287, MD, USA.
| | - Norman J Haughey
- Department of Neurology, Richard T. Johnson Division of Neuroimmunology and Neurological Infections, The Johns Hopkins University School of Medicine, Carnegie 616A, 600 North Wolfe Street, Baltimore, 21287, MD, USA. .,Department of Psychiatry, Division of Geriatric Psychiatry and Neuropsychiatry, The Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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15
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Bae M, Bandaru VVR, Patel N, Haughey NJ. Ceramide metabolism analysis in a model of binge drinking reveals both neuroprotective and toxic effects of ethanol. J Neurochem 2014; 131:645-54. [PMID: 25060779 DOI: 10.1111/jnc.12834] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Revised: 06/25/2014] [Accepted: 06/27/2014] [Indexed: 01/05/2023]
Abstract
Binge drinking is a common form of alcohol abuse that involves repeated rounds of intoxication followed by withdrawal. The episodic effects of binge drinking and withdrawal on brain resident cells are thought to contribute to neural remodeling and neurological damage. However, the molecular mechanisms for these neurodegenerative effects are not understood. Ethanol (EtOH) regulates the metabolism of ceramide, a highly bioactive lipid that is enriched in brain. We used a mouse model of binge drinking to determine the effects of EtOH intoxication and withdrawal on brain ceramide metabolism. Intoxication and acute alcohol withdrawal were each associated with distinct changes in ceramide regulatory genes and metabolic products. EtOH intoxication was accompanied by decreased concentrations of multiple ceramides, coincident with reductions in the expression of enzymes involved in the production of ceramides, and increased expression of ceramide-degrading enzymes. EtOH withdrawal was associated with specific increases in ceramide C16:0, C18:0, and C20:0 and increased expression of enzymes involved with ceramide production. These data suggest that EtOH intoxication may evoke a ceramide phenotype that is neuroprotective, whereas EtOH withdrawal results in a metabolic shift that increases the production of potentially toxic ceramide species.
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Affiliation(s)
- Mihyun Bae
- Richard T. Johnson Division of Neuroimmunology and Neurological Infections, Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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16
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Vidaurre OG, Haines JD, Katz Sand I, Adula KP, Huynh JL, McGraw CA, Zhang F, Varghese M, Sotirchos E, Bhargava P, Bandaru VVR, Pasinetti G, Zhang W, Inglese M, Calabresi PA, Wu G, Miller AE, Haughey NJ, Lublin FD, Casaccia P. Cerebrospinal fluid ceramides from patients with multiple sclerosis impair neuronal bioenergetics. Brain 2014; 137:2271-86. [PMID: 24893707 PMCID: PMC4164163 DOI: 10.1093/brain/awu139] [Citation(s) in RCA: 115] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 03/20/2014] [Accepted: 04/06/2014] [Indexed: 11/14/2022] Open
Abstract
Axonal damage is a prominent cause of disability and yet its pathogenesis is incompletely understood. Using a xenogeneic system, here we define the bioenergetic changes induced in rat neurons by exposure to cerebrospinal fluid samples from patients with multiple sclerosis compared to control subjects. A first discovery cohort of cerebrospinal fluid from 13 patients with multiple sclerosis and 10 control subjects showed that acute exposure to cerebrospinal fluid from patients with multiple sclerosis induced oxidative stress and decreased expression of neuroprotective genes, while increasing expression of genes involved in lipid signalling and in the response to oxidative stress. Protracted exposure of neurons to stress led to neurotoxicity and bioenergetics failure after cerebrospinal fluid exposure and positively correlated with the levels of neurofilament light chain. These findings were validated using a second independent cohort of cerebrospinal fluid samples (eight patients with multiple sclerosis and eight control subjects), collected at a different centre. The toxic effect of cerebrospinal fluid on neurons was not attributable to differences in IgG content, glucose, lactate or glutamate levels or differences in cytokine levels. A lipidomic profiling approach led to the identification of increased levels of ceramide C16:0 and C24:0 in the cerebrospinal fluid from patients with multiple sclerosis. Exposure of cultured neurons to micelles composed of these ceramide species was sufficient to recapitulate the bioenergetic dysfunction and oxidative damage induced by exposure to cerebrospinal fluid from patients with multiple sclerosis. Therefore, our data suggest that C16:0 and C24:0 ceramides are enriched in the cerebrospinal fluid of patients with multiple sclerosis and are sufficient to induce neuronal mitochondrial dysfunction and axonal damage.
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Affiliation(s)
- Oscar G Vidaurre
- 1 Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Jeffery D Haines
- 1 Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Ilana Katz Sand
- 2 Corinne Goldsmith Dickinson Centre for MS, Mount Sinai Medical Centre, New York, NY 10029, USA
| | - Kadidia P Adula
- 1 Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Jimmy L Huynh
- 1 Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Corey A McGraw
- 3 Department of Neurology, Albert Einstein College of Medicine, Montefiore Medical Centre, Bronx, NY, USA
| | - Fan Zhang
- 4 Bioinformatics Department, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Merina Varghese
- 5 Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Elias Sotirchos
- 6 Department of Neurology, The Johns Hopkins Hospital, Baltimore, MD, USA
| | - Pavan Bhargava
- 6 Department of Neurology, The Johns Hopkins Hospital, Baltimore, MD, USA
| | | | - Giulio Pasinetti
- 5 Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Weijia Zhang
- 4 Bioinformatics Department, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Matilde Inglese
- 7 Department of Neurology, Radiology and Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Peter A Calabresi
- 6 Department of Neurology, The Johns Hopkins Hospital, Baltimore, MD, USA
| | - Gang Wu
- 8 Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Aaron E Miller
- 2 Corinne Goldsmith Dickinson Centre for MS, Mount Sinai Medical Centre, New York, NY 10029, USA
| | - Norman J Haughey
- 6 Department of Neurology, The Johns Hopkins Hospital, Baltimore, MD, USA
| | - Fred D Lublin
- 2 Corinne Goldsmith Dickinson Centre for MS, Mount Sinai Medical Centre, New York, NY 10029, USA
| | - Patrizia Casaccia
- 1 Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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17
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Haughey NJ, Zhu X, Bandaru VVR. A biological perspective of CSF lipids as surrogate markers for cognitive status in HIV. J Neuroimmune Pharmacol 2013; 8:1136-46. [PMID: 24203462 DOI: 10.1007/s11481-013-9506-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Accepted: 10/03/2013] [Indexed: 12/14/2022]
Abstract
The development and application of biomarkers to neurodegenerative diseases has become increasingly important in clinical practice and therapeutic trials. While substantial progress has been made at the basic science level in understanding the pathophysiology of HIV-Associated Neurocognitive Disorders (HAND), there are significant limitations in our current ability to predict the onset or trajectory of disease, and to accurately determine the effects of therapeutic interventions. Thus, the development of objective biomarkers is critical to further our understanding and treatment of HAND. In recent years, biomarker discovery efforts have largely been driven forward through the implementation of multiple "omics" approaches that include (but are not restricted to): Lipidomics, proteomics, metabolomics, genomics, transcriptomics, and advances in brain imaging approaches such as functional connectomics. In this paper we summarize our progress to date on lipidomic approaches to biomarker discovery, discuss how these data have influenced basic research on the neuropathology of HAND, and implications for the development of therapeutics that target metabolic pathways involved in lipid handling.
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Affiliation(s)
- Norman J Haughey
- Department of Neurology, Division of Neuroimmunology and Neurological Infections, The Johns Hopkins University School of Medicine, Pathology 517, 600 North Wolfe Street, Baltimore, MD, 21287, USA,
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18
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Bandaru VVR, Mielke MM, Sacktor N, McArthur JC, Grant I, Letendre S, Chang L, Wojna V, Pardo C, Calabresi P, Munsaka S, Haughey NJ. A lipid storage-like disorder contributes to cognitive decline in HIV-infected subjects. Neurology 2013; 81:1492-9. [PMID: 24027056 DOI: 10.1212/wnl.0b013e3182a9565e] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
OBJECTIVE In this multicenter cohort study, we sought to identify prognostic and associative metabolic indicators for HIV-associated neurocognitive disorders (HAND). METHODS A quantitative lipidomic analysis was conducted on 524 longitudinal CSF samples collected from 7 different performance sites across the mainland United States, Hawaii, and Puerto Rico. Subjects included HIV-infected individuals with longitudinal clinical and cognitive testing data and cognitively normal HIV-negative healthy controls. RESULTS At baseline, HIV+ subjects could be differentiated from HIV- controls by reductions in a single ceramide species and increases in multiple forms of cholesterol. Perturbations in cholesterol metabolism and ceramide were influenced by combined antiretroviral therapy (cART) use. There were no cross-sectional baseline differences in any lipid metabolite when HIV+ subjects were grouped according to cognitive status. However, a single sphingolipid metabolite and reduced levels of esterified cholesterols were prognostic indicators of incident cognitive decline. Longitudinal patterns of these disturbances in sphingolipid and sterol metabolism suggest that a progressive disorder of lipid metabolism that is similar to disorders of lipid storage may contribute to the pathogenesis of HAND. CONCLUSIONS These findings suggest that HIV infection and cART are independently associated with a CNS metabolic disturbance, identify surrogate markers that are prognostic for cognitive decline, and implicate a lipid storage-like disorder in the progression of HAND.
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Affiliation(s)
- Veera Venkata Ratnam Bandaru
- From the Department of Neurology, Division of Neuroimmunology and Neurological Infections (V.V.R.B., N.S., J.C.M., C.P., P.C., N.J.H.), and the Department of Psychiatry (N.J.H.), The Johns Hopkins University, School of Medicine, Baltimore, MD; the Department of Health Sciences Research (M.M.M.), Division of Epidemiology, The Mayo Clinic, Rochester, MN; HIV Neurobehavioral Research Program and Department of Psychiatry (I.G., S.L.), School of Medicine, University of California, San Diego, La Jolla; the Department of Psychiatry (L.C., S.M.), University of Hawaii, John A. Burns School of Medicine, Honolulu; and the Department of Neurology (V.W.), Specialized Neurosciences Research Program, University of Puerto Rico Medical Sciences Campus, San Juan
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Chatterjee S, Alsaeedi N, Hou J, Bandaru VVR, Wu L, Halushka MK, Pili R, Ndikuyeze G, Haughey NJ. Use of a glycolipid inhibitor to ameliorate renal cancer in a mouse model. PLoS One 2013; 8:e63726. [PMID: 23671696 PMCID: PMC3650082 DOI: 10.1371/journal.pone.0063726] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2012] [Accepted: 04/05/2013] [Indexed: 11/25/2022] Open
Abstract
In a xenograft model wherein, live renal cancer cells were implanted under the kidney capsule in mice, revealed a 30-fold increase in tumor volume over a period of 26 days and this was accompanied with a 32-fold increase in the level of lactosylceramide (LacCer). Mice fed D- threo-1-phenyl-2-decanoylamino-3-morpholino-1-propanol (D-PDMP), an inhibitor of glucosylceramide synthase and lactosylceramide synthase (LCS: β-1,4-GalT-V), showed marked reduction in tumor volume. This was accompanied by a decrease in the mass of lactosylceramide and an increase in glucosylceramide (GlcCer) level. Mechanistic studies revealed that D-PDMP inhibited cell proliferation and angiogenesis by inhibiting p44MAPK, p-AKT-1 pathway and mammalian target for rapamycin (mTOR). By linking glycosphingolipid synthesis with tumor growth, renal cancer progression and regression can be evaluated. Thus inhibiting glycosphingolipid synthesis can be a bonafide target to prevent the progression of other types of cancer.
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Affiliation(s)
- Subroto Chatterjee
- Department of Pediatrics, Division of Pediatric Cardiology, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA.
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Mielke MM, Haughey NJ, Bandaru VVR, Weinberg DD, Darby E, Zaidi N, Pavlik V, Doody RS, Lyketsos CG. Plasma sphingomyelins are associated with cognitive progression in Alzheimer's disease. J Alzheimers Dis 2012; 27:259-69. [PMID: 21841258 DOI: 10.3233/jad-2011-110405] [Citation(s) in RCA: 103] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Plasma sphingolipids have been shown to predict cognitive impairment and hippocampal volume loss, but there is little research in patients with Alzheimer's disease (AD). In this study we sought to determine whether plasma ceramides, dihydroceramides (DHCer), sphingomyelins (SM), or dihydrosphingomyelin (DHSM) levels and ratios of SM/ceramide or DHSM/DHCer were predictive of progression in AD. Probable AD patients (n = 120) were enrolled in the Alzheimer's Disease and Memory Disorders Center at Baylor College of Medicine. Plasma sphingolipids were assessed using ESI/MS/MS. Linear mixed effects models were used to examine the relation between baseline plasma sphingolipid levels and cross-sectional and longitudinal performance on the Mini-Mental State Exam (MMSE), Alzheimer's Disease Assessment Scale-Cognitive Subscale (ADAS-Cog), and Clinical Dementia Rating-Sum of Boxes (CDR-Sum). Participants were followed a mean of 4.2 visits and 2.3 years. There were no cross-sectional associations. In longitudinal analyses, high levels of DHCer and ceramide were associated with greater progression, but findings did not reach significance (p > 0.05). In contrast, higher plasma levels of SM, DHSM, SM/ceramide, and DHSM/DHCer ratios were associated with less progression on the MMSE and ADAS-Cog; the ratios were the strongest predictors of clinical progression. Compared to the lowest tertiles, the highest tertiles of DHSM/DHCer and SM/ceramide ratios declined 1.35 points (p = 0.001) and 1.19 (p = 0.004) points less per year on the MMSE and increased 3.18 (p = 0.001) and 2.42 (p = 0.016) points less per year on the ADAS-Cog. These results suggest that increased SM/ceramide and DHSM/DHCer ratios dose-dependently predict slower progression among AD patients and may be sensitive blood-based biomarkers for clinical progression.
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Affiliation(s)
- Michelle M Mielke
- Department of Psychiatry, Division of Geriatric Psychiatry and Neuropsychiatry, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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21
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Kooij G, van Horssen J, Bandaru VVR, Haughey NJ, de Vries HE. The Role of ATP-Binding Cassette Transporters in Neuro-Inflammation: Relevance for Bioactive Lipids. Front Pharmacol 2012; 3:74. [PMID: 22557971 PMCID: PMC3339339 DOI: 10.3389/fphar.2012.00074] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Accepted: 04/10/2012] [Indexed: 11/13/2022] Open
Abstract
ATP-binding cassette (ABC) transporters are highly expressed by brain endothelial cells that form the blood–brain barrier (BBB). These efflux pumps play an important role in maintaining brain homeostasis as they actively hinder the entry of unwanted blood-derived compounds into the central nervous system (CNS). Consequently, their high activity at the BBB has been a major hurdle for the treatment of several brain diseases, as they prevent numerous drugs to reach their site of action within the brain. Importantly, recent data indicate that endogenous substrates for ABC transporters may include inflammatory mediators, such as prostaglandins, leukotrienes, cytokines, chemokines, and bioactive lipids, suggesting a potential role for ABC transporters in immunological responses, and more specifically in inflammatory brain disorders, such as multiple sclerosis (MS). In this review, we will give a comprehensive overview of recent findings that illustrate this novel role for ABC transporters in neuro-inflammatory processes. Moreover, we will provide first insights into underlying mechanisms and focus on the importance for bioactive lipids, in particular platelet-activating factor, herein. A thorough understanding of these events may form the basis for the development for selective treatment modalities to dampen the neuro-inflammatory attack in MS and thereby reducing tissue damage.
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Affiliation(s)
- Gijs Kooij
- Blood-Brain Barrier Research Group, Department of Molecular Cell Biology and Immunology, VU University Medical Center Amsterdam, Netherlands
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Xu H, Bae M, Tovar-y-Romo LB, Patel N, Bandaru VVR, Pomerantz D, Steiner JP, Haughey NJ. The human immunodeficiency virus coat protein gp120 promotes forward trafficking and surface clustering of NMDA receptors in membrane microdomains. J Neurosci 2011; 31:17074-90. [PMID: 22114277 PMCID: PMC3254245 DOI: 10.1523/jneurosci.4072-11.2011] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2011] [Revised: 09/28/2011] [Accepted: 09/29/2011] [Indexed: 11/21/2022] Open
Abstract
Infection by the human immunodeficiency virus (HIV) can result in debilitating neurological syndromes collectively known as HIV-associated neurocognitive disorders. Although the HIV coat protein gp120 has been identified as a potent neurotoxin that enhances NMDA receptor function, the exact mechanisms for this effect are not known. Here we provide evidence that gp120 activates two separate signaling pathways that converge to enhance NMDA-evoked calcium flux by clustering NMDA receptors in modified membrane microdomains. gp120 enlarged and stabilized the structure of lipid microdomains on dendrites by mechanisms that involved a redox-regulated translocation of a sphingomyelin hydrolase (neutral sphingomyelinase-2) to the plasma membrane. A concurrent pathway was activated that accelerated the forward traffic of NMDA receptors by a PKA-dependent phosphorylation of the NR1 C-terminal serine 897 (masks an ER retention signal), followed by a PKC-dependent phosphorylation of serine 896 (important for surface expression). NMDA receptors were preferentially targeted to synapses and clustered in modified membrane microdomains. In these conditions, NMDA receptors were unable to laterally disperse and did not internalize, even in response to strong agonist induction. Focal NMDA-evoked calcium bursts were enhanced by threefold in these regions. Inhibiting membrane modification or NR1 phosphorylation prevented gp120 from accelerating the surface localization of NMDA receptors. Disrupting the structure of membrane microdomains after gp120 treatments restored the ability of NMDA receptors to disperse and internalize. These findings demonstrate that gp120 contributes to synaptic dysfunction in the setting of HIV infection by interfering with NMDA receptor trafficking.
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Affiliation(s)
- Hangxiu Xu
- Departments of Neurology, Richard T. Johnson Division of Neuroimmunology and Neurological Infections and
| | - Mihyun Bae
- Departments of Neurology, Richard T. Johnson Division of Neuroimmunology and Neurological Infections and
| | - Luis B. Tovar-y-Romo
- Departments of Neurology, Richard T. Johnson Division of Neuroimmunology and Neurological Infections and
| | - Neha Patel
- Departments of Neurology, Richard T. Johnson Division of Neuroimmunology and Neurological Infections and
| | | | - Daniel Pomerantz
- Departments of Neurology, Richard T. Johnson Division of Neuroimmunology and Neurological Infections and
| | - Joseph P. Steiner
- Departments of Neurology, Richard T. Johnson Division of Neuroimmunology and Neurological Infections and
| | - Norman J. Haughey
- Departments of Neurology, Richard T. Johnson Division of Neuroimmunology and Neurological Infections and
- Psychiatry, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21287
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Bandaru VVR, Patel N, Ewaleifoh O, Haughey NJ. A failure to normalize biochemical and metabolic insults during morphine withdrawal disrupts synaptic repair in mice transgenic for HIV-gp120. J Neuroimmune Pharmacol 2011; 6:640-9. [PMID: 21748284 DOI: 10.1007/s11481-011-9289-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2011] [Accepted: 06/26/2011] [Indexed: 11/25/2022]
Abstract
Drug abuse in HIV-infected individuals accelerates the onset and progression of HIV-associated neurocognitive disorders (HAND). Opiates are a class of commonly abused drugs that have interactive effects with neurotoxic HIV proteins that facilitate glial dysfunction, neuronal damage and death. While the combined effects of neurotoxic HIV proteins and morphine have been extensively studied in the setting of chronic and acute morphine use, very little in known about the effects of HIV proteins during drug withdrawal. Since opiate withdrawal can induce considerable neuronal stress, we determined the effects of opiates (morphine) on brain redox balance, sphingolipid metabolism and synaptic integrity during both chronic and withdrawal conditions in non-transgenic mice (nTg), and in mice transgenic for the HIV-coat protein gp120 (gp120tg). In nTg mice, we found that chronic morphine increased brain oxidative capacity and induced synaptic damage that was largely reversed during drug withdrawal. Gp120tg mice showed a similar response to chronic morphine, but the diminished oxidative capacity and synaptic damage failed to normalize during drug withdrawal. In nTg mice, brain sphingolipid content was not affected by morphine during chronic or withdrawal conditions. In gp120tg mice there was a baseline perturbation in sphingolipid metabolism that manifest as decreased sphingomyelin with accumulations of the bioactive lipid ceramide. Sphingolipid metabolism was highly reactive to morphine in gp120tg mice. Chronic morphine increased sphingomyelin content with a consequent reduction in ceramide. During drug withdrawal, these effects reversed, and sphingomyelin levels were reduced with consequent increases of ceramide. We interpret these findings to suggest that neuronal repair during morphine withdrawal is inhibited in the setting of gp120 by mechanisms that involve sustained oxidative insult and accumulations of the highly reactive intermediate ceramide.
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Affiliation(s)
- Veera Venkata Ratnam Bandaru
- Department of Neurology, Division of Neuroimmunology, Johns Hopkins University School of Medicine, Meyer 6-109, 600 North Wolfe Street, Baltimore, MD 21287, USA
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Haughey NJ, Tovar-y-Romo LB, Bandaru VVR. Roles for biological membranes in regulating human immunodeficiency virus replication and progress in the development of HIV therapeutics that target lipid metabolism. J Neuroimmune Pharmacol 2011; 6:284-95. [PMID: 21445582 DOI: 10.1007/s11481-011-9274-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2011] [Accepted: 03/08/2011] [Indexed: 01/14/2023]
Abstract
Infection by the human immunodeficiency virus (HIV) involves a number of important interactions with lipid components in host membranes that regulate binding, fusion, internalization, and viral assembly. Available data suggests that HIV actively modifies the sphingolipid content of cellular membranes to create focal environments that are favorable for infection. In this review, we summarize the roles that membrane lipids play in HIV infection and discuss the current status of therapeutics that attempt to modify biological membranes to inhibit HIV.
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Affiliation(s)
- Norman J Haughey
- Department of Neurology, Richard T. Johnson Division of Neuroimmunology and Neurological Infections, The Johns Hopkins University School of Medicine, Meyer 6-109, 600N. Wolfe Street, Baltimore, MD 21287, USA.
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25
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Gracia-Garcia P, Rao V, Haughey NJ, Bandaru VVR, Smith G, Rosenberg PB, Lobo A, Lyketsos CG, Mielke MM, Mielke MM. Elevated plasma ceramides in depression. J Neuropsychiatry Clin Neurosci 2011; 23:215-8. [PMID: 21677254 PMCID: PMC3121176 DOI: 10.1176/jnp.23.2.jnp215] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The authors did a preliminary examination asking whether plasma ceramides were elevated in depression, and whether the elevation was more pronounced in Alzheimer's disease patients than in control subjects. Results suggest that plasma ceramides are elevated in persons with a diagnosis of major depression, regardless of dementia status.
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Mielke MM, Haughey NJ, Bandaru VVR, Schech S, Carrick R, Carlson MC, Mori S, Miller MI, Ceritoglu C, Brown T, Albert M, Lyketsos CG. Plasma ceramides are altered in mild cognitive impairment and predict cognitive decline and hippocampal volume loss. Alzheimers Dement 2010; 6:378-85. [PMID: 20813340 DOI: 10.1016/j.jalz.2010.03.014] [Citation(s) in RCA: 115] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2009] [Revised: 03/01/2010] [Accepted: 03/18/2010] [Indexed: 12/14/2022]
Abstract
BACKGROUND A blood-based biomarker of Alzheimer's disease (AD) would be superior to cerebrospinal fluid (CSF) and neuroimaging measures in terms of cost, invasiveness, and feasibility for repeated measures. We previously reported that blood ceramides varied in relation to timing of memory impairment in a population-based study. The present objective was to examine whether plasma ceramides varied by AD severity in a well-characterized clinic sample and were associated with cognitive decline and hippocampal volume loss over 1 year. METHODS Participants included 25 normal controls (NC), 17 amnestic Mild Cognitive Impairment (MCI), and 21 early probable AD. A thorough neuropsychological battery and neuroimaging with hippocampal volume determination were conducted at baseline and 1 year later. Plasma ceramides were assayed at baseline using high performance liquid chromatography coupled electrospray ionization tandem mass spectrometry. RESULTS Although all saturated ceramides were lower in MCI compared with AD at baseline, ceramides C22:0 and C24:0 were significantly lower in the MCI group compared with both NC and AD groups (P < .01). Ceramide levels did not differ (P > .05) in AD versus NC. There were no cross-sectional associations between ceramides C22:0 and C24:0 and either cognitive performance or hippocampal volume among any group. However, among the MCI group, higher baseline ceramide C22:0 and C24:0 levels were predictive of cognitive decline and hippocampal volume loss 1 year later. CONCLUSION Results suggest that very long-chain plasma ceramides C22:0 and C24:0 are altered in MCI and predict memory loss and right hippocampal volume loss among subjects with MCI. These plasma ceramides may be early indicators of AD progression.
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Affiliation(s)
- Michelle M Mielke
- Division of Geriatric Psychiatry and Neuropsychiatry, Department of Psychiatry, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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Tabatadze N, Savonenko A, Song H, Bandaru VVR, Chu M, Haughey NJ. Inhibition of neutral sphingomyelinase-2 perturbs brain sphingolipid balance and spatial memory in mice. J Neurosci Res 2010; 88:2940-51. [PMID: 20629193 DOI: 10.1002/jnr.22438] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The sphingolipid ceramide is a bioactive signaling lipid that is thought to play important roles in modulating synaptic activity, in part by regulating the function of excitatory postsynaptic receptors. However, the molecular mechanisms by which ceramide exerts its effects on synaptic activity remain largely unknown. We recently demonstrated that a rapid generation of ceramide by neutral sphingomyelinase-2 (nSMase2; also known as "sphingomyelin phosphodiesterase-3") played a key role in modulating excitatory postsynaptic currents by controlling the insertion and clustering of NMDA receptors (Wheeler et al. [2009] J. Neurochem. 109:1237-1249). We now demonstrate that nSMase2 plays a role in memory. Inhibition of nSMase2 impaired spatial and episodic-like memory in mice. At the molecular level, inhibition of nSMase2 decreased ceramide, increased PSD-95, increased the number of AMPA receptors, and altered the subunit composition of NMDA receptors. Our study identifies nSMase2 as an important component for efficient memory formation and underscores the importance of ceramide in regulating synaptic events related to learning and memory.
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Affiliation(s)
- Nino Tabatadze
- Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA
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28
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Mielke MM, Bandaru VVR, McArthur JC, Chu M, Haughey NJ. Disturbance in cerebral spinal fluid sphingolipid content is associated with memory impairment in subjects infected with the human immunodeficiency virus. J Neurovirol 2010; 16:445-56. [PMID: 21087113 PMCID: PMC3144420 DOI: 10.3109/13550284.2010.525599] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Despite widespread use of antiretroviral therapies to control replication of the human immunodeficiency virus (HIV), dysfunctions of cognition that are collectively termed HIV-associated neurocognitive disorders (HAND) still occur in approximately 50% of those infected by the virus. Currently there is not a biomarker that can identify HIV-infected people who are at risk for the development of HAND. Previous studies have identified particular sphingolipid species that are dysregulated in HAND, but the neurocognitive correlates of these biochemical findings are not currently understood. To address this question, we compared cerebrospinal fluid (CSF) levels of sphingomyelin, ceramide, and sterol species with performance on standard neurological tests designed to assess the function of multiple cognitive and motor domains in HIV-infected subjects. We found that sphingomyelin:ceramide ratios for acyl chain lengths of C16:0, C18:0, C22:0, and C24:0 were associated with worse performance on several indices of memory. The most striking finding was for the acyl chain of C18:0 that consistently associated with performance on multiple tests of memory. These findings suggest that the sphingomyelin:ceramide ratio for C18:0 may be a reasonable surrogate marker for memory dysfunction in HIV-infected subjects.
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Affiliation(s)
- Michelle M Mielke
- Department of Psychiatry, Richard T. Johnson Division of Neuroimmunology and Neurological Infections, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA
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Mielke MM, Bandaru VVR, McArthur JC, Chu M, Haughey NJ. Disturbance in cerebral spinal fluid sphingolipid content is associated with memory impairment in subjects infected with the human immunodeficiency virus. J Neurovirol 2010. [DOI: 10.1007/bf03210850] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Wheeler D, Bandaru VVR, Calabresi PA, Nath A, Haughey NJ. A defect of sphingolipid metabolism modifies the properties of normal appearing white matter in multiple sclerosis. ACTA ACUST UNITED AC 2008; 131:3092-102. [PMID: 18772223 PMCID: PMC2577809 DOI: 10.1093/brain/awn190] [Citation(s) in RCA: 129] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Maintaining the appropriate complement and content of lipids in cellular membranes is critical for normal neural function. Accumulating evidence suggests that even subtle perturbations in the lipid content of neurons and myelin can disrupt their function and may contribute to myelin and axonal degradation. In this study, we determined the composition and quantified the content of lipids and sterols in normal appearing white matter (NAWM) and normal appearing grey matter (NAGM) from control and multiple sclerosis brain tissues by electrospray ionization tandem mass spectrometry. Our results suggest that in active-multiple sclerosis, there is a shift in the lipid composition of NAWM and NAGM to a higher phospholipid and lower sphingolipid content. We found that this disturbance in lipid composition was reduced in NAGM but not in NAWM of inactive-multiple sclerosis. The pattern of disturbance in lipid composition suggests a metabolic defect that causes sphingolipids to be shuttled to phospholipid production. Modelling the biophysical consequence of this change in lipid composition of NAWM indicated an increase in the repulsive force between opposing bilayers that could explain decompaction and disruption of myelin structure.
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Affiliation(s)
- David Wheeler
- Department of Neurology, Richard T Johnson Division of Neuroimmunology and Neurological Infections, The Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
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Imandi SB, Bandaru VVR, Somalanka SR, Bandaru SR, Garapati HR. Application of statistical experimental designs for the optimization of medium constituents for the production of citric acid from pineapple waste. Bioresour Technol 2008; 99:4445-4450. [PMID: 17936623 DOI: 10.1016/j.biortech.2007.08.071] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2006] [Revised: 08/13/2007] [Accepted: 08/16/2007] [Indexed: 05/25/2023]
Abstract
Statistical experimental designs were applied for the optimization of medium constituents for citric acid production by Yarrowia lipolytica NCIM 3589 in solid state fermentation (SSF) using pineapple waste as the sole substrate. Using Plackett-Burman design, yeast extract, moisture content of the substrate, KH(2)PO(4) and Na(2)HPO(4) were identified as significant variables which highly influenced citric acid production and these variables were subsequently optimized using a central composite design (CCD). The optimum conditions were found to be yeast extract 0.34 (%w/w), moisture content of the substrate 70.71 (%), KH(2)PO(4) 0.64 (%w/w) and Na(2)HPO(4) 0.69 (%w/w). Citric acid production at these optimum conditions was 202.35 g/kg ds (g citric acid produced/kg of dried pineapple waste as substrate).
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Affiliation(s)
- Sarat Babu Imandi
- Center for Biotechnology, Department of Chemical Engineering, College of Engineering, Andhra University, Visakhapatnam 530 003, India.
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Mielke MM, Bandaru VVR, Haughey NJ, Rabins PV, Lyketsos CG, Carlson MC. Serum sphingomyelins and ceramides are early predictors of memory impairment. Neurobiol Aging 2008; 31:17-24. [PMID: 18455839 DOI: 10.1016/j.neurobiolaging.2008.03.011] [Citation(s) in RCA: 122] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2007] [Revised: 03/06/2008] [Accepted: 03/21/2008] [Indexed: 12/14/2022]
Abstract
A blood-based biomarker of Alzheimer's disease (AD) progression could be instrumental in targeting asymptomatic individuals for treatment early in the disease process. Given the direct connection between sphingomyelins (SM), ceramides, and apoptosis, these lipids may be indicators of neurodegeneration and AD progression. Baseline serum SM and ceramides from 100 women enrolled in a longitudinal population-based study were examined as predictors of cognitive impairment. Participants were followed up to six visits over 9 years. Baseline lipids, in tertiles, were examined in relation to cross-sectional and incident impairment (<1.5 S.D. below standard norms) on HVLT-immediate and -delayed memory recall and Trails A and B. SM and ceramides varied in relation to the timing of HVLT-delayed impairment: low levels were associated with cross-sectional impairment; high levels predicted incident impairment in asymptomatic individuals. Lipids were not associated with loss-to-follow-up. Results suggest serum SM and ceramides vary according to the timing of the onset of memory impairment and may be good pre-clinical predictors, or biomarkers, of memory impairment: a deficit observed early in AD pathogenesis.
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Affiliation(s)
- Michelle M Mielke
- Department of Psychiatry,Division of Geriatric Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, 550 North Broadway, Suite 308, Baltimore, MD 21205, USA.
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Bandaru VVR, Bandaru SR, Somalanka SR, Mendu DR, Imandi SB, Bejawada SR, Medicherla NR, Devarajan T, Karothi J, Chityala A. Optimization of fermentation parameters to enhance the production of ethanol from palmyra jaggery using Saccharomyces cerevisiae in a batch fermentor. Appl Biochem Biotechnol 2007; 143:224-35. [PMID: 18057450 DOI: 10.1007/s12010-007-0048-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/1999] [Revised: 11/30/1999] [Accepted: 05/31/2007] [Indexed: 11/26/2022]
Abstract
Application of statistical experimental designs for optimization of fermentation parameters to enhance ethanol production, which is an economical and renewable energy source using Saccharomyces cerevisiae NCIM 3090 from palmyra jaggery, was studied in a batch fermentor. Using Plackett-Burman design, impeller speed, concentrations of CoCl2 and KH2PO4 were identified as significant variables, which highly influenced ethanol production, and these variables were further optimized using a central composite design (CCD). The ethanol production was adequately approximated with a full quadratic equation obtained from three factors and five levels of CCD. Maximum ethanol concentration of 132.56 g/l (16.8% [v/v]) was obtained for an impeller speed of 247.179 ( approximately 250) rev/min, CoCl2 of 0.263 g/l and KH2PO4 of 2.39 g/l. A second-order polynomial regression model was fitted and was found adequate with R 2 of 0.8952. This combined statistical approach enables rapid identification and investigation of significant parameters for improving the ethanol production and could be very useful in optimizing processes.
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Affiliation(s)
- Veera Venkata Ratnam Bandaru
- Department of Neurology, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Pathology 233/Meyer 222, Baltimore, MD 21287, USA.
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Srinubabu G, Patel RS, Shedbalkar VP, Rao AA, Rao MN, Bandaru VVR. Development and validation of high-throughput liquid chromatography–tandem mass spectrometric method for simultaneous quantification of loratadine and desloratadine in human plasma. J Chromatogr B Analyt Technol Biomed Life Sci 2007; 860:202-8. [DOI: 10.1016/j.jchromb.2007.10.036] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2007] [Revised: 10/18/2007] [Accepted: 10/22/2007] [Indexed: 10/22/2022]
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Abstract
BACKGROUND Infection with HIV can result in a debilitating CNS disorder known as HIV dementia (HIV-D). Since the advent of highly active antiretroviral therapy (HAART), the incidence of HIV-D has declined, but the prevalence continues to increase. In this new era of HIV-D, traditional biomarkers such as CSF viral load and monocyte chemotactic protein 1 levels are less likely to be associated with dementia in patients on HAART and biomarkers that can predict HIV-D have not yet been identified. OBJECTIVE To identify biomarkers that are associated with and can predict HIV-D. METHODS We grouped patients with HIV based on changes in cognitive status over a 1-year period and analyzed sphingolipid, sterol, triglyceride, antioxidant, and lipid peroxidation levels in CSF. RESULTS We found that increased levels of the vitamin E and triglyceride C52 predicted the onset or worsening of dementia. Elevated levels of sphingomyelin were associated with inactive dementia. Elevated levels of ceramide and the accumulation of 4-hydroxynonenals were associated with active dementia. CONCLUSIONS We interpret these findings to indicate that early in the pathogenesis of HIV dementia, there is an up-regulation of endogenous antioxidant defenses in brain. The failure of this attempted neuroprotective mechanism leads to the accumulation of sphingomyelin and moderate cognitive dysfunction. The breakdown of this enlarged pool of sphingomyelin to ceramide and the accumulation of highly reactive aldehydes are associated with declining cognitive function. Thus, elevations in endogenous protective mechanisms may identify patients who are at increased risk of the development of HIV dementia.
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Affiliation(s)
- V V R Bandaru
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
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Bandaru VVR, Somalanka SR, Mendu DR, Madicherla NR, Chityala A. Optimization of fermentation conditions for the production of ethanol from sago starch by co-immobilized amyloglucosidase and cells of Zymomonas mobilis using response surface methodology. Enzyme Microb Technol 2006. [DOI: 10.1016/j.enzmictec.2005.06.002] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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