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Bednarski TK, Rahim M, Hasenour CM, Banerjee DR, Trenary IA, Wasserman DH, Young JD. Pharmacological SERCA activation limits diet-induced steatohepatitis and restores liver metabolic function in mice. J Lipid Res 2024; 65:100558. [PMID: 38729350 PMCID: PMC11179628 DOI: 10.1016/j.jlr.2024.100558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 04/26/2024] [Accepted: 04/28/2024] [Indexed: 05/12/2024] Open
Abstract
Metabolic dysfunction-associated steatotic liver disease is the most common form of liver disease and poses significant health risks to patients who progress to metabolic dysfunction-associated steatohepatitis. Fatty acid overload alters endoplasmic reticulum (ER) calcium stores and induces mitochondrial oxidative stress in hepatocytes, leading to hepatocellular inflammation and apoptosis. Obese mice have impaired liver sarco/ER Ca2+-ATPase (SERCA) function, which normally maintains intracellular calcium homeostasis by transporting Ca2+ ions from the cytoplasm to the ER. We hypothesized that restoration of SERCA activity would improve diet-induced steatohepatitis in mice by limiting ER stress and mitochondrial dysfunction. WT and melanocortin-4 receptor KO (Mc4r-/-) mice were placed on either chow or Western diet (WD) for 8 weeks. Half of the WD-fed mice were administered CDN1163 to activate SERCA, which reduced liver fibrosis and inflammation. SERCA activation also restored glucose tolerance and insulin sensitivity, improved histological markers of metabolic dysfunction-associated steatohepatitis, increased expression of antioxidant enzymes, and decreased expression of oxidative stress and ER stress genes. CDN1163 decreased hepatic citric acid cycle flux and liver pyruvate cycling, enhanced expression of mitochondrial respiratory genes, and shifted hepatocellular [NADH]/[NAD+] and [NADPH]/[NADP+] ratios to a less oxidized state, which was associated with elevated PUFA content of liver lipids. In sum, the data demonstrate that pharmacological SERCA activation limits metabolic dysfunction-associated steatotic liver disease progression and prevents metabolic dysfunction induced by WD feeding in mice.
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Affiliation(s)
- Tomasz K Bednarski
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN, USA
| | - Mohsin Rahim
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN, USA
| | - Clinton M Hasenour
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN, USA
| | - Deveena R Banerjee
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, USA
| | - Irina A Trenary
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN, USA
| | - David H Wasserman
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, USA
| | - Jamey D Young
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN, USA; Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, USA.
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2
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Mannully CT, Bruck-Haimson R, Zacharia A, Orih P, Shehadeh A, Saidemberg D, Kogan NM, Alfandary S, Serruya R, Dagan A, Petit I, Moussaieff A. Lipid desaturation regulates the balance between self-renewal and differentiation in mouse blastocyst-derived stem cells. Cell Death Dis 2022; 13:1027. [PMID: 36477438 PMCID: PMC9729213 DOI: 10.1038/s41419-022-05263-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 08/31/2022] [Accepted: 09/13/2022] [Indexed: 12/13/2022]
Abstract
Stem cells are defined by their ability to self-renew and differentiate, both shown in multiple studies to be regulated by metabolic processes. To decipher metabolic signatures of self-renewal in blastocyst-derived stem cells, we compared early differentiating embryonic stem cells (ESCs) and their extra-embryonic counterparts, trophoblast (T)SCs to their self-renewing counterparts. A metabolomics analysis pointed to the desaturation of fatty acyl chains as a metabolic signature of differentiating blastocyst-derived SCs via the upregulation of delta-6 desaturase (D6D; FADS2) and delta-5 desaturase (D5D; FADS1), key enzymes in the biosynthesis of polyunsaturated fatty acids (PUFAs). The inhibition of D6D or D5D by specific inhibitors or SiRNA retained stemness in ESCs and TSCs, and attenuated endoplasmic reticulum (ER) stress-related apoptosis. D6D inhibition in ESCs upregulated stearoyl-CoA desaturase-1 (Scd1), essential to maintain ER homeostasis. In TSCs, however, D6D inhibition downregulated Scd1. TSCs show higher Scd1 mRNA expression and high levels of monounsaturated fatty acyl chain products in comparison to ESCs. The addition of oleic acid, the product of Scd1 (essential for ESCs), to culture medium, was detrimental to TSCs. Interestingly, TSCs express a high molecular mass variant of Scd1 protein, hardly expressed by ESCs. Taken together, our data suggest that lipid desaturation is a metabolic regulator of the balance between differentiation and self-renewal of ESCs and TSCs. They point to lipid polydesaturation as a driver of differentiation in both cell types. Monounsaturated fatty acids (MUFAs), essential for ESCs are detrimental to TSCs.
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Affiliation(s)
- Chanchal Thomas Mannully
- grid.9619.70000 0004 1937 0538The Institute for Drug Research, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Reut Bruck-Haimson
- grid.9619.70000 0004 1937 0538The Institute for Drug Research, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Anish Zacharia
- grid.9619.70000 0004 1937 0538The Institute for Drug Research, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Paul Orih
- grid.9619.70000 0004 1937 0538The Institute for Drug Research, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Alaa Shehadeh
- grid.9619.70000 0004 1937 0538The Institute for Drug Research, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Daniel Saidemberg
- grid.9619.70000 0004 1937 0538The Institute for Drug Research, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Natalya M. Kogan
- grid.9619.70000 0004 1937 0538The Institute for Drug Research, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Sivan Alfandary
- grid.9619.70000 0004 1937 0538The Institute for Drug Research, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Raphael Serruya
- grid.9619.70000 0004 1937 0538The Institute for Drug Research, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Arie Dagan
- grid.9619.70000 0004 1937 0538The Institute for Drug Research, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Isabelle Petit
- grid.465261.20000 0004 1793 5929Sorbonne Université, Inserm, Centre de Recherche Saint-Antoine, CRSA, Paris, France
| | - Arieh Moussaieff
- grid.9619.70000 0004 1937 0538The Institute for Drug Research, The Hebrew University of Jerusalem, Jerusalem, Israel
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Zappelli E, Daniele S, Vergassola M, Ceccarelli L, Chelucci E, Mangano G, Durando L, Ragni L, Martini C. A specific combination of nutraceutical Ingredients exerts cytoprotective effects in human cholinergic neurons. PHARMANUTRITION 2022. [DOI: 10.1016/j.phanu.2022.100317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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4
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Koçancı FG. Role of Fatty Acid Chemical Structures on Underlying Mechanisms of Neurodegenerative Diseases and Gut Microbiota. EUR J LIPID SCI TECH 2021. [DOI: 10.1002/ejlt.202000341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Fatma Gonca Koçancı
- Vocational High School of Health Services Department of Medical Laboratory Techniques Alanya Alaaddin Keykubat University Alanya/Antalya 07425 Turkey
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GFAP hyperpalmitoylation exacerbates astrogliosis and neurodegenerative pathology in PPT1-deficient mice. Proc Natl Acad Sci U S A 2021; 118:2022261118. [PMID: 33753498 PMCID: PMC8020761 DOI: 10.1073/pnas.2022261118] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
This study reports that the intermediate filament protein GFAP is modified with protein palmitoylation. Increased GFAP expression and palmitoylation is involved in astrocyte proliferation and astrogliosis. We demonstrate that GFAP palmitoylation is regulated by PPT1, a palmitoylprotein thioesterase linked to a childhood neurodegenerative disorder, infantile neuronal ceroid lipofuscinosis. A palmitoylation-defective mutant of GFAP attenuates astrogliosis and the concurrent pathology in a loss-of-function PPT1 mouse. We conclude that accumulation of palmitoylated GFAP contributes to the pathogenesis of astrogliosis and neurodegeneration, suggesting that targeting the modified cysteine in GFAP may be a potential therapeutic strategy for the treatment of infantile neuronal ceroid lipofuscinosis and other neurodegenerative disorders. The homeostasis of protein palmitoylation and depalmitoylation is essential for proper physiological functions in various tissues, in particular the central nervous system (CNS). The dysfunction of PPT1 (PPT1-KI, infantile neuronal ceroid lipofuscinosis [INCL] mouse model), which catalyze the depalmitoylation process, results in serious neurodegeneration accompanied by severe astrogliosis in the brain. Endeavoring to determine critical factors that might account for the pathogenesis in CNS by palm-proteomics, glial fibrillary acidic protein (GFAP) was spotted, indicating that GFAP is probably palmitoylated. Questions concerning if GFAP is indeed palmitoylated in vivo and how palmitoylation of GFAP might participate in neural pathology remain unexplored and are waiting to be investigated. Here we show that GFAP is readily palmitoylated in vitro and in vivo; specifically, cysteine-291 is the unique palmitoylated residue in GFAP. Interestingly, it was found that palmitoylated GFAP promotes astrocyte proliferation in vitro. Furthermore, we showed that PPT1 depalmitoylates GFAP, and the level of palmitoylated GFAP is overwhelmingly up-regulated in PPT1-knockin mice, which lead us to speculate that the elevated level of palmitoylated GFAP might accelerate astrocyte proliferation in vivo and ultimately led to astrogliosis in INCL. Indeed, blocking palmitoylation by mutating cysteine-291 into alanine in GFAP attenuate astrogliosis, and remarkably, the concurrent neurodegenerative pathology in PPT1-knockin mice. Together, these findings demonstrate that hyperpalmitoylated GFAP plays critical roles in regulating the pathogenesis of astrogliosis and neurodegeneration in the CNS, and most importantly, pinpointing that cysteine-291 in GFAP might be a valuable pharmaceutical target for treating INCL and other potential neurodegenerative diseases.
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Zhang J, Yang P, Wang H, Huang Q, Chen T, Li N, Zhang H, Liu Z. N-3 PUFAs inhibited hepatic ER stress induced by feeding of a high-saturated fat diet accompanied by the expression LOX-1. J Nutr Biochem 2020; 88:108481. [PMID: 32853678 DOI: 10.1016/j.jnutbio.2020.108481] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 07/28/2020] [Accepted: 07/30/2020] [Indexed: 10/23/2022]
Abstract
Excessive consumption of saturated fat leads to non-alcoholic fatty liver disease (NAFLD), which is attenuated by supplementation of n-3 polyunsaturated fatty acids (PUFAs). Endoplasmic reticulum (ER) stress is crucial in the development of NAFLD, but how high-saturated fat diet (HFD) causes ER stress and NAFLD remains unclear. Lectin-like oxidized low-density lipoprotein receptor-1 (LOX-1) is involved in hepatic ER stress. We aimed to explore the roles of LOX-1 in HFD-induced ER stress. Male Sprague-Dawley rats were fed an HFD without or with supplementation of fish oil for 16 weeks. The effects of n-3 PUFAs on hepatic ER stress degrees and the expression levels of LOX-1 were examined. Then human L02 hepatoma cells were treated with palmitate or palmitate and DHA to determine the ER stress and LOX-1 expression levels in vitro. After that the expression of LOX-1 in L02 cells was either knocked-down or overexpressed to analyze the roles of LOX-1 in palmitate-induced ER stress. The feeding of HFD induced NAFLD development and ER stress in the liver, and LOX-1 expressing level, which were all reversed by fish oil supplementation. In vitro, DHA treatment reduced the expression of LOX-1, and palmitate-induced ER stress. SiRNA-mediated knock-down of LOX-1 inhibited palmitate-induced ER stress, whereas overexpression of LOX-1 dramatically induced ER stress in L02 cells.LOX-1 is critical for HFD-induced ER stress, and inhibition of its expression under the treatment of n-3 PUFAs could ameliorate HFD-induced NAFLD.
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Affiliation(s)
- Junlin Zhang
- Hubei Province Engineering Research Center of Healthy Food, School of Biology and Pharmaceutical Engineering, Wuhan Polytechnic University, Wuhan 430023, China
| | - Pu Yang
- Department of Anesthesiology, Washington University in St. Louis, St. Louis, MO, 63110, USA
| | - Hualin Wang
- Hubei Province Engineering Research Center of Healthy Food, School of Biology and Pharmaceutical Engineering, Wuhan Polytechnic University, Wuhan 430023, China
| | - Qiang Huang
- Hubei Province Engineering Research Center of Healthy Food, School of Biology and Pharmaceutical Engineering, Wuhan Polytechnic University, Wuhan 430023, China
| | - Ting Chen
- Hubei Province Engineering Research Center of Healthy Food, School of Biology and Pharmaceutical Engineering, Wuhan Polytechnic University, Wuhan 430023, China
| | - Na Li
- Hubei Province Engineering Research Center of Healthy Food, School of Biology and Pharmaceutical Engineering, Wuhan Polytechnic University, Wuhan 430023, China
| | - Hongyu Zhang
- Hubei Province Engineering Research Center of Healthy Food, School of Biology and Pharmaceutical Engineering, Wuhan Polytechnic University, Wuhan 430023, China
| | - Zhiguo Liu
- Hubei Province Engineering Research Center of Healthy Food, School of Biology and Pharmaceutical Engineering, Wuhan Polytechnic University, Wuhan 430023, China.
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7
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Bowman E, Funderburg NT. Lipidome Abnormalities and Cardiovascular Disease Risk in HIV Infection. Curr HIV/AIDS Rep 2020; 16:214-223. [PMID: 30993515 DOI: 10.1007/s11904-019-00442-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
PURPOSE OF REVIEW Human immunodeficiency virus (HIV) infection and its treatment with antiretroviral therapy (ART) are associated with lipid abnormalities that may enhance cardiovascular disease risk (CVD). RECENT FINDINGS Chronic inflammation persists in HIV+ individuals, and complex relationships exist among lipids and inflammation, as immune activation may be both a cause and a consequence of lipid abnormalities in HIV infection. Advances in mass spectrometry-based techniques now allow for detailed measurements of individual lipid species; improved lipid measurement might better evaluate CVD risk compared with the prognostic value of traditional assessments. Lipidomic analyses have begun to characterize dynamic changes in lipid composition during HIV infection and following treatment with ART, and further investigation may identify novel lipid biomarkers predictive of adverse outcomes. Developing strategies to improve management of comorbidities in the HIV+ population is important, and statin therapy and lifestyle modifications, including diet and exercise, may help to improve lipid levels and mitigate CVD risk.
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Affiliation(s)
- Emily Bowman
- School of Health and Rehabilitation Sciences, Division of Medical Laboratory Science, Ohio State University College of Medicine, 453 W. 10th Ave. 535A Atwell Hall, Columbus, OH, 43210, USA
| | - Nicholas T Funderburg
- School of Health and Rehabilitation Sciences, Division of Medical Laboratory Science, Ohio State University College of Medicine, 453 W. 10th Ave. 535A Atwell Hall, Columbus, OH, 43210, USA.
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8
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Bowman ER, Kulkarni M, Gabriel J, Cichon MJ, Riedl K, Belury MA, Lake JE, Richardson B, Cameron C, Cameron M, Koletar SL, Lederman MM, Sieg SF, Funderburg NT. Altered Lipidome Composition Is Related to Markers of Monocyte and Immune Activation in Antiretroviral Therapy Treated Human Immunodeficiency Virus (HIV) Infection and in Uninfected Persons. Front Immunol 2019; 10:785. [PMID: 31040846 PMCID: PMC6477036 DOI: 10.3389/fimmu.2019.00785] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 03/25/2019] [Indexed: 12/21/2022] Open
Abstract
Background: HIV infection and antiretroviral therapy (ART) have both been linked to dyslipidemia and increased cardiovascular disease (CVD) risk. Alterations in the composition of saturated (SaFA), monounsaturated (MUFA), and polyunsaturated (PUFA) fatty acids are related to inflammation and CVD progression in HIV-uninfected (HIV-) populations. The relationships among the lipidome and markers of monocyte and immune activation in HIV-infected (HIV+) individuals are not well understood. Methods: Concentrations of serum lipids and their fatty acid composition were measured by direct infusion-tandem mass spectrometry in samples from 20 ART-treated HIV+ individuals and 20 HIV- individuals. Results: HIV+ individuals had increased levels of free fatty acids (FFAs) with enrichment of SaFAs, including palmitic acid (16:0) and stearic acid (18:0), and these levels were directly associated with markers of monocyte (CD40, HLA-DR, TLR4, CD36) and serum inflammation (LBP, CRP). PUFA levels were reduced significantly in HIV+ individuals, and many individual PUFA species levels were inversely related to markers of monocyte activation, such as tissue factor, TLR4, CD69, and SR-A. Also in HIV+ individuals, the composition of lysophosphatidylcholine (LPC) was enriched for SaFAs; LPC species containing SaFAs were directly associated with IL-6 levels and monocyte activation. We similarly observed direct relationships between levels of SaFAs and inflammation in HIV uninfected individuals. Further, SaFA exposure altered monocyte subset phenotypes and inflammatory cytokine production in vitro. Conclusions: The lipidome is altered in ART-treated HIV infection, and may contribute to inflammation and CVD progression. Detailed lipidomic analyses may better assess CVD risk in both HIV+ and HIV- individuals than does traditional lipid profiling.
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Affiliation(s)
- Emily R Bowman
- Division of Medical Laboratory Science, School of Health and Rehabilitation Sciences, Ohio State University, Columbus, OH, United States
| | - Manjusha Kulkarni
- Division of Medical Laboratory Science, School of Health and Rehabilitation Sciences, Ohio State University, Columbus, OH, United States
| | - Janelle Gabriel
- Division of Medical Laboratory Science, School of Health and Rehabilitation Sciences, Ohio State University, Columbus, OH, United States
| | - Morgan J Cichon
- Personalized Food and Nutritional Metabolomics for Health Discovery Theme, The Ohio State University, Columbus, OH, United States
| | - Kenneth Riedl
- Personalized Food and Nutritional Metabolomics for Health Discovery Theme, The Ohio State University, Columbus, OH, United States
| | - Martha A Belury
- Department of Human Sciences, Ohio State University, Columbus, OH, United States
| | - Jordan E Lake
- Division of Infectious Diseases, Department of Medicine, The University of Texas Health Science Center, Houston, TX, United States
| | - Brian Richardson
- Department of Population and Quantitative Health Sciences, Case Western Reserve University, Cleveland, OH, United States
| | - Cheryl Cameron
- Department of Nutrition, Case Western Reserve University, Cleveland, OH, United States
| | - Mark Cameron
- Department of Population and Quantitative Health Sciences, Case Western Reserve University, Cleveland, OH, United States
| | - Susan L Koletar
- Division of Infectious Diseases, Department of Medicine, Ohio State University, Columbus, OH, United States
| | - Michael M Lederman
- Division of Infectious Diseases, Department of Internal Medicine, Case Western Reserve University/University Hospitals of Cleveland, Cleveland, OH, United States
| | - Scott F Sieg
- Division of Infectious Diseases, Department of Internal Medicine, Case Western Reserve University/University Hospitals of Cleveland, Cleveland, OH, United States
| | - Nicholas T Funderburg
- Division of Medical Laboratory Science, School of Health and Rehabilitation Sciences, Ohio State University, Columbus, OH, United States
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9
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Exosome markers associated with immune activation and oxidative stress in HIV patients on antiretroviral therapy. Sci Rep 2018; 8:7227. [PMID: 29740045 PMCID: PMC5940833 DOI: 10.1038/s41598-018-25515-4] [Citation(s) in RCA: 107] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Accepted: 04/20/2018] [Indexed: 01/04/2023] Open
Abstract
Exosomes are nanovesicles released from most cell types including immune cells. Prior studies suggest exosomes play a role in HIV pathogenesis, but little is known about exosome cargo in relation to immune responses and oxidative stress. Here, we characterize plasma exosomes in HIV patients and their relationship to immunological and oxidative stress markers. Plasma exosome fractions were isolated from HIV-positive subjects on ART with suppressed viral load and HIV-negative controls. Exosomes were characterized by electron microscopy, nanoparticle tracking, immunoblotting, and LC-MS/MS proteomics. Plasma exosomes were increased in HIV-positive subjects compared to controls, and correlated with increased oxidative stress markers (cystine, oxidized cys-gly) and decreased PUFA (DHA, EPA, DPA). Untargeted proteomics detected markers of exosomes (CD9, CD63, CD81), immune activation (CD14, CRP, HLA-A, HLA-B), oxidative stress (CAT, PRDX1, PRDX2, TXN), and Notch4 in plasma exosomes. Exosomal Notch4 was increased in HIV-positive subjects versus controls and correlated with immune activation markers. Treatment of THP-1 monocytic cells with patient-derived exosomes induced expression of genes related to interferon responses and immune activation. These results suggest that exosomes in ART-treated HIV patients carry proteins related to immune activation and oxidative stress, have immunomodulatory effects on myeloid cells, and may have pro-inflammatory and redox effects during pathogenesis.
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Verlaet AAJ, Maasakkers CM, Hermans N, Savelkoul HFJ. Rationale for Dietary Antioxidant Treatment of ADHD. Nutrients 2018; 10:nu10040405. [PMID: 29587355 PMCID: PMC5946190 DOI: 10.3390/nu10040405] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 03/12/2018] [Accepted: 03/21/2018] [Indexed: 12/27/2022] Open
Abstract
Increasing understanding arises regarding disadvantages of stimulant medication in children with ADHD (Attention-Deficit Hyperactivity Disorder). This review presents scientific findings supporting dietary antioxidant treatment of ADHD and describes substantial alterations in the immune system, epigenetic regulation of gene expression, and oxidative stress regulation in ADHD. As a result, chronic inflammation and oxidative stress could develop, which can lead to ADHD symptoms, for example by chronic T-cell-mediated neuroinflammation, as well as by neuronal oxidative damage and loss of normal cerebral functions. Therefore, modulation of immune system activity and oxidant-antioxidant balance using nutritional approaches might have potential in ADHD treatment. The use of natural antioxidants against oxidative conditions is an emerging field in the management of neurodegenerative diseases. Dietary polyphenols, for example, have antioxidant capacities as well as immunoregulatory effects and, therefore, appear appropriate in ADHD therapy. This review can stimulate the development and investigation of dietary antioxidant treatment in ADHD, which is highly desired.
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Affiliation(s)
- Annelies A J Verlaet
- Department of Pharmaceutical Sciences, Laboratory of Nutrition and Functional Food Science, University of Antwerp, Universiteitsplein 1 (A104), 2610 Wilrijk, Belgium.
| | - Carlijn M Maasakkers
- Department of Pharmaceutical Sciences, Laboratory of Nutrition and Functional Food Science, University of Antwerp, Universiteitsplein 1 (A104), 2610 Wilrijk, Belgium.
- Department of Geriatric Medicine, Radboud Institute for Health Sciences, Radboud University Medical Center, P.O. Box 9101, 6500 HB Nijmegen, The Netherlands.
- Cell Biology and Immunology Group, Wageningen University, De Elst 1 Building 122, 6709 PG Wageningen, The Netherlands.
| | - Nina Hermans
- Department of Pharmaceutical Sciences, Laboratory of Nutrition and Functional Food Science, University of Antwerp, Universiteitsplein 1 (A104), 2610 Wilrijk, Belgium.
| | - Huub F J Savelkoul
- Cell Biology and Immunology Group, Wageningen University, De Elst 1 Building 122, 6709 PG Wageningen, The Netherlands.
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Jung B, Park J, Kim N, Li T, Kim S, Bartley LE, Kim J, Kim I, Kang Y, Yun K, Choi Y, Lee HH, Ji S, Lee KS, Kim BY, Shon JC, Kim WC, Liu KH, Yoon D, Kim S, Seo YS, Lee J. Cooperative interactions between seed-borne bacterial and air-borne fungal pathogens on rice. Nat Commun 2018; 9:31. [PMID: 29295978 PMCID: PMC5750236 DOI: 10.1038/s41467-017-02430-2] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 11/30/2017] [Indexed: 11/23/2022] Open
Abstract
Bacterial-fungal interactions are widely found in distinct environments and contribute to ecosystem processes. Previous studies of these interactions have mostly been performed in soil, and only limited studies of aerial plant tissues have been conducted. Here we show that a seed-borne plant pathogenic bacterium, Burkholderia glumae (Bg), and an air-borne plant pathogenic fungus, Fusarium graminearum (Fg), interact to promote bacterial survival, bacterial and fungal dispersal, and disease progression on rice plants, despite the production of antifungal toxoflavin by Bg. We perform assays of toxoflavin sensitivity, RNA-seq analyses, lipid staining and measures of triacylglyceride content to show that triacylglycerides containing linolenic acid mediate resistance to reactive oxygen species that are generated in response to toxoflavin in Fg. As a result, Bg is able to physically attach to Fg to achieve rapid and expansive dispersal to enhance disease severity.
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Affiliation(s)
- Boknam Jung
- Department of Applied Biology, Dong-A University, Busan, 49315, Korea
| | - Jungwook Park
- Department of Microbiology, Pusan National University, Busan, 46269, Korea
| | - Namgyu Kim
- Department of Microbiology, Pusan National University, Busan, 46269, Korea
| | - Taiying Li
- Department of Applied Biology, Dong-A University, Busan, 49315, Korea
| | - Soyeon Kim
- Department of Applied Biology, Dong-A University, Busan, 49315, Korea
| | - Laura E Bartley
- Department of Microbiology and Plant Biology, University of Oklahoma, Norman, OK, 73019, USA
| | - Jinnyun Kim
- Department of Microbiology, Pusan National University, Busan, 46269, Korea
| | - Inyoung Kim
- Department of Microbiology, Pusan National University, Busan, 46269, Korea
| | - Yoonhee Kang
- Department of Applied Biology, Dong-A University, Busan, 49315, Korea
| | - Kihoon Yun
- Department of Applied Biology, Dong-A University, Busan, 49315, Korea
| | - Younghae Choi
- Department of Applied Biology, Dong-A University, Busan, 49315, Korea
| | - Hyun-Hee Lee
- Department of Microbiology, Pusan National University, Busan, 46269, Korea
| | - Sungyeon Ji
- Department of Applied Biology, Dong-A University, Busan, 49315, Korea
| | - Kwang Sik Lee
- Department of Applied Biology, Dong-A University, Busan, 49315, Korea
| | - Bo Yeon Kim
- Department of Applied Biology, Dong-A University, Busan, 49315, Korea
| | - Jong Cheol Shon
- BK21 Plus KNU Multi-Omics-Based Creative Drug Research Team, College of Pharmacy and Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, 41566, Korea
| | - Won Cheol Kim
- BK21 Plus KNU Multi-Omics-Based Creative Drug Research Team, College of Pharmacy and Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, 41566, Korea
| | - Kwang-Hyeon Liu
- BK21 Plus KNU Multi-Omics-Based Creative Drug Research Team, College of Pharmacy and Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, 41566, Korea
| | - Dahye Yoon
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan, 46269, Korea
| | - Suhkman Kim
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan, 46269, Korea
| | - Young-Su Seo
- Department of Microbiology, Pusan National University, Busan, 46269, Korea.
| | - Jungkwan Lee
- Department of Applied Biology, Dong-A University, Busan, 49315, Korea.
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12
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Casanova EL, Gerstner Z, Sharp JL, Casanova MF, Feltus FA. Widespread Genotype-Phenotype Correlations in Intellectual Disability. Front Psychiatry 2018; 9:535. [PMID: 30420816 PMCID: PMC6217001 DOI: 10.3389/fpsyt.2018.00535] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 10/09/2018] [Indexed: 11/23/2022] Open
Abstract
Background: Linking genotype to phenotype is a major aim of genetics research, yet the underlying biochemical mechanisms of many complex conditions continue to remain elusive. Recent research provides evidence that relevant gene-phenotype associations are discoverable in the study of intellectual disability (ID). Here we expand on that work, identifying distinctive gene interaction modules with unique enrichment patterns reflective of associated clinical features in ID. Methods: Two hundred twelve forms of monogenic ID were curated according to comorbidities with autism and epilepsy. These groups were further subdivided according to secondary clinical manifestations of complex vs. simple facial dysmorphia and neurodegenerative-like features due to their clinical prominence, modest symptom overlap, and probable etiological divergence. An aggregate gene interaction ID network for these phenotype subgroups was discovered via a public database of known gene interactions: protein-protein, genetic, and mRNA coexpression. Additional annotation resources (Gene Ontology, Human Phenotype Ontology, TRANSFAC/JASPAR, and KEGG/WikiPathways) were utilized to assess functional and phenotypic enrichment patterns within subgroups. Results: Phenotypic analysis revealed high rates of complex facial dysmorphia in ID with comorbid autism. In contrast, neurodegenerative-like features were overrepresented in ID with epilepsy. Network analysis subsequently showed that gene groups divided according to clinical features of interest resulted in distinctive interaction clusters, with unique functional enrichments according to gene set. Conclusions: These data suggest that specific comorbid and secondary clinical features in ID are predictive of underlying genotype. In summary, ID form unique clusters, which are comprised of individual conditions with remarkable genotypic and phenotypic overlap.
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Affiliation(s)
- Emily L Casanova
- Department of Biomedical Sciences, University of South Carolina School of Medicine at Greenville, Greenville, SC, United States.,Department of Pediatrics, Greenville Health System, Greenville, SC, United States
| | - Zachary Gerstner
- Department of Genetics and Biochemistry, Clemson University, Clemson, SC, United States
| | - Julia L Sharp
- Department of Statistics, Colorado State University, Fort Collins, CO, United States
| | - Manuel F Casanova
- Department of Biomedical Sciences, University of South Carolina School of Medicine at Greenville, Greenville, SC, United States.,Department of Pediatrics, Greenville Health System, Greenville, SC, United States
| | - Frank Alex Feltus
- Department of Genetics and Biochemistry, Clemson University, Clemson, SC, United States.,Center for Human Genetics, Clemson University, Clemson, SC, United States.,Biomedical Data Science and Informatics Program, Clemson University, Clemson, SC, United States
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13
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Faria e Souza BS, Carvalho HO, Taglialegna T, Barros ASA, da Cunha EL, Ferreira IM, Keita H, Navarrete A, Carvalho JCT. Effect of Euterpe oleracea Mart. (Açaí) Oil on Dyslipidemia Caused by Cocos nucifera L. Saturated Fat in Wistar Rats. J Med Food 2017; 20:830-837. [DOI: 10.1089/jmf.2017.0027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Belmira S. Faria e Souza
- Drug Research Laboratory, Department of Biological Sciences and Health, College of Pharmacy, Federal University of Amapá, Macapá, Brazil
- Graduate Program in Pharmaceutical Innovation, Department of Biological Sciences and Health, Collegiate of Pharmacy, Federal University of Amapá, Macapá, Brazil
| | - Helison O. Carvalho
- Drug Research Laboratory, Department of Biological Sciences and Health, College of Pharmacy, Federal University of Amapá, Macapá, Brazil
- School of Science Degree Program, Department of Biological Sciences and Health, Federal University of Amapá, Macapá, Brazil
| | - Talisson Taglialegna
- Drug Research Laboratory, Department of Biological Sciences and Health, College of Pharmacy, Federal University of Amapá, Macapá, Brazil
| | - Albenise Santana A. Barros
- Drug Research Laboratory, Department of Biological Sciences and Health, College of Pharmacy, Federal University of Amapá, Macapá, Brazil
| | - Edilson Leal da Cunha
- Drug Research Laboratory, Department of Biological Sciences and Health, College of Pharmacy, Federal University of Amapá, Macapá, Brazil
- Graduate Program in Pharmaceutical Innovation, Department of Biological Sciences and Health, Collegiate of Pharmacy, Federal University of Amapá, Macapá, Brazil
| | - Irlon Maciel Ferreira
- Biocatalysis and Biotransformation Laboratory in Organic Chemistry, Department of Chemistry, Federal University of Amapá, Macapá, Brazil
| | - Hady Keita
- Drug Research Laboratory, Department of Biological Sciences and Health, College of Pharmacy, Federal University of Amapá, Macapá, Brazil
| | - Andres Navarrete
- Pharmacology of Natural Products Laboratory, Faculty of Chemistry, Department of Pharmacy, National Autonomous University of Mexico, Mexico City, Mexico
| | - José Carlos Tavares Carvalho
- Drug Research Laboratory, Department of Biological Sciences and Health, College of Pharmacy, Federal University of Amapá, Macapá, Brazil
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Lin Y, Cheng X, Mao J, Wu D, Ren B, Xu SY, Fang ZF, Che LQ, Wu CM, Li J. Effects of different dietary n-6/n-3 polyunsaturated fatty acid ratios on boar reproduction. Lipids Health Dis 2016; 15:31. [PMID: 26884231 PMCID: PMC4756391 DOI: 10.1186/s12944-016-0193-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2015] [Accepted: 11/23/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND N-3 and N-6 polyunsaturated fatty acids are widely used in reproduction, yet few studies have addressed the effects of dietary n-6/n-3 ratios on boar reproduction. The present study aimed to determine the effects of different dietary n-6/n-3 ratios on the reproductive performance of breeding boars. Thirty-two boars with body weights of 15.0 ± 1.4 kg were divided into four treatments (C, T1, T2, T3) and fed diets with different n-6/n-3 fatty acid ratios (29.06:1, 20.07:1, 1:1, 1:17.96, respectively) for 174 days. RESULTS The highest testis index was observed for treatment T2. Sperm density and total sperm number per ejaculate in the T2 treatment were significantly higher than those in all other treatments, whereas the sperm deformity rate was the lowest. Interestingly, the fatty acid compositions and ratios of sperm were consistent with dietary treatments. Acid phosphatase and fructose concentration of seminal plasma, and the total superoxide dismutase and glutathione peroxidase of sperm in T2 were higher than those in other treatments. The concentration of testosterone and prostaglandin E2 increased in boars fed on diets supplemented with fatty acids as compared with boars subjected to the C group treatment, reaching a peak at n-6/n-3 fatty acid ratios of 1:1. Furthermore, higher expression of Δ(6)-fatty acid desaturase and peroxisome proliferator activated receptor-α in spermatozoa of the T2 treatment were observed, indicating more vigorous metabolism and intensive hormonal regulation. CONCLUSIONS Our data suggest that the ideal n-6/n-3 ratio in the diet of breeding boars is 1:1, and proper balancing of n-6/n-3 fatty acids plays an important role in male reproduction.
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Affiliation(s)
- Yan Lin
- Key Laboratory for Animal Disease Resistance Nutrition of the Ministry of Education of China, Institute of Animal Nutrition, Sichuan Agricultural University, Ya'an, 625001, China.
| | - Xu Cheng
- Key Laboratory for Animal Disease Resistance Nutrition of the Ministry of Education of China, Institute of Animal Nutrition, Sichuan Agricultural University, Ya'an, 625001, China
| | - Jiude Mao
- Division of Animal Sciences, University of Missouri, Columbia, MO, 65211, USA
| | - De Wu
- Key Laboratory for Animal Disease Resistance Nutrition of the Ministry of Education of China, Institute of Animal Nutrition, Sichuan Agricultural University, Ya'an, 625001, China
| | - Bo Ren
- Key Laboratory for Animal Disease Resistance Nutrition of the Ministry of Education of China, Institute of Animal Nutrition, Sichuan Agricultural University, Ya'an, 625001, China
| | - Sheng-Yu Xu
- Key Laboratory for Animal Disease Resistance Nutrition of the Ministry of Education of China, Institute of Animal Nutrition, Sichuan Agricultural University, Ya'an, 625001, China
| | - Zheng-Feng Fang
- Key Laboratory for Animal Disease Resistance Nutrition of the Ministry of Education of China, Institute of Animal Nutrition, Sichuan Agricultural University, Ya'an, 625001, China
| | - Lian-Qiang Che
- Key Laboratory for Animal Disease Resistance Nutrition of the Ministry of Education of China, Institute of Animal Nutrition, Sichuan Agricultural University, Ya'an, 625001, China
| | - Cai-Mei Wu
- Key Laboratory for Animal Disease Resistance Nutrition of the Ministry of Education of China, Institute of Animal Nutrition, Sichuan Agricultural University, Ya'an, 625001, China
| | - Jian Li
- Key Laboratory for Animal Disease Resistance Nutrition of the Ministry of Education of China, Institute of Animal Nutrition, Sichuan Agricultural University, Ya'an, 625001, China
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Hong M, Song KD, Lee HK, Yi S, Lee YS, Heo TH, Jun HS, Kim SJ. Fibrates inhibit the apoptosis of Batten disease lymphoblast cells via autophagy recovery and regulation of mitochondrial membrane potential. In Vitro Cell Dev Biol Anim 2015; 52:349-355. [PMID: 26659390 DOI: 10.1007/s11626-015-9979-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Accepted: 11/08/2015] [Indexed: 11/29/2022]
Abstract
Batten disease (BD; also known as juvenile neuronal ceroid lipofuscinosis) is a genetic disorder inherited as an autosomal recessive trait and is characterized by blindness, seizures, cognitive decline, and early death resulting from the inherited mutation of the CLN3 gene. Mitochondrial oxidative stress, endoplasmic reticulum (ER) stress, disrupted autophagy, and enhanced apoptosis have been suggested to play a role in BD pathogenesis. Fibrates, a class of lipid-lowering drugs that induce peroxisome proliferator-activated receptor-α (PPAR-α) activation, are the most commonly used PPAR agonists. Assuming that fibrates have a neuroprotective effect, we studied the effects of fibrates, fenofibrate, bezafibrate, and gemfibrozil on apoptosis, depolarization of mitochondrial membrane, and defective autophagy in BD lymphoblast cells. The viability of fibrate-treated BD lymphoblast cells increased to levels of normal lymphoblast cells. In addition, treatment with fibrates inhibited depolarization of mitochondrial membrane potential in BD lymphoblast cells. Defective autophagy in BD lymphoblast cells was normalized when treated with fibrates as indicated by increased acridine orange staining. The recovery of autophagy in BD lymphoblast cells is most likely attributed to the upregulation of autophagy proteins, lysosomal-associated membrane protein 1 (LAMP1), and LC3 I/II, after treatment with fibrates. This study therefore suggests that fibrates may have a therapeutic potential against BD.
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Affiliation(s)
- Minho Hong
- Department of Biotechnology, Hoseo University, 165, Baebang, Asan, Chungnam, 31499, Republic of Korea
| | - Ki Duk Song
- Department of Animal Biotechnology, Chonbuk National University, Jeonju, 561-756, Republic of Korea
| | - Hak-Kyo Lee
- Department of Animal Biotechnology, Chonbuk National University, Jeonju, 561-756, Republic of Korea
| | - SunShin Yi
- Department of Biomedical Laboratory Science, College of Biomedical Sciences, Soonchunhyang University, Asan, 336-745, Republic of Korea
| | - Yong Seok Lee
- Department of Life Science and Biotechnology, Soonchunhyang University, Asan, 336-745, Republic of Korea
| | - Tae-Hwe Heo
- Lab of Immunology, Integrated Research Institute of Pharmaceutical Sciences, College of Pharmacy, The Catholic University of Korea, Bucheon, 420-743, Republic of Korea
| | - Hyun Sik Jun
- Department of Biotechnology and Bioinformatics, College of Science and Technology, Korea University, Sejong, 339-700, Republic of Korea.
| | - Sung-Jo Kim
- Department of Biotechnology, Hoseo University, 165, Baebang, Asan, Chungnam, 31499, Republic of Korea.
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Gao X, van der Veen JN, Vance JE, Thiesen A, Vance DE, Jacobs RL. Lack of phosphatidylethanolamine N-methyltransferase alters hepatic phospholipid composition and induces endoplasmic reticulum stress. Biochim Biophys Acta Mol Basis Dis 2015; 1852:2689-99. [PMID: 26391255 DOI: 10.1016/j.bbadis.2015.09.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Revised: 09/04/2015] [Accepted: 09/16/2015] [Indexed: 12/11/2022]
Abstract
BACKGROUND & AIMS Endoplasmic reticulum (ER) stress is associated with development of steatohepatitis. Phosphatidylethanolamine N-methyltransferase (PEMT) is a hepatic enzyme located on the ER and mitochondria-associated membranes and catalyzes phosphatidylcholine (PC) synthesis via methylation of phosphatidylethanolamine (PE). We hypothesized that PEMT deficiency in mice alters ER phospholipid content, thereby inducing ER stress and sensitizing the mice to diet-induced steatohepatitis. METHODS PC and PE mass were measured in hepatic ER fractions from chow-fed and high fat-fed Pemt(-/-) and Pemt(+/+) mice. Proteins implicated in ER stress and the unfolded protein response (UPR) were assessed in mouse livers and in McArdle-RH7777 hepatoma cells that expressed or lacked PEMT. The chemical chaperone 4-phenyl butyric acid was administered to cells and HF-fed Pemt(-/-) mice to alleviate ER stress. RESULTS In chow-fed Pemt(-/-) mice, the hepatic PC/PE ratio in the ER was lower than in Pemt(+/+) mice, and levels of ER stress markers, CHOP and BIP, were higher without activation of the UPR. In livers of HF-fed Pemt(-/-) mice the ER had a lower PC/PE ratio, and exhibited more ER stress and UPR activation. Similarly, the UPR was repressed in McArdle cells expressing PEMT compared with those lacking PEMT, with concomitantly lower levels of CHOP and BIP. 4-Phenyl butyric acid attenuated activation of the UPR and ER stress in McArdle cells lacking PEMT, but not the hepatic ER stress in HF-fed Pemt(-/-) mice. CONCLUSION PEMT deficiency reduces the PC/PE ratio in the ER and induces ER stress, which sensitizes the mice to HF-induced steatohepatitis.
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Affiliation(s)
- Xia Gao
- Group on Molecular and Cell Biology of Lipids, Canada; Department of Biochemistry, University of Alberta, Edmonton, AB, Canada
| | - Jelske N van der Veen
- Group on Molecular and Cell Biology of Lipids, Canada; Department of Biochemistry, University of Alberta, Edmonton, AB, Canada
| | - Jean E Vance
- Group on Molecular and Cell Biology of Lipids, Canada; Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - Aducio Thiesen
- Division of Anatomical Pathology, University of Alberta, Edmonton, AB, Canada
| | - Dennis E Vance
- Group on Molecular and Cell Biology of Lipids, Canada; Department of Biochemistry, University of Alberta, Edmonton, AB, Canada
| | - René L Jacobs
- Group on Molecular and Cell Biology of Lipids, Canada; Department of Agricultural, Food & Nutritional Science, University of Alberta, Edmonton, AB, Canada.
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Behling CS, Andrade AS, Putti JS, Mahl CD, Hackenhaar FS, da Silva ACA, e Silva MNC, Salomon TB, dos Santos CEI, Dias JF, Benfato MS. Treatment of oxidative stress in brain of ovariectomized rats with omega-3 and lipoic acid. Mol Nutr Food Res 2015; 59:2547-55. [DOI: 10.1002/mnfr.201500338] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 08/07/2015] [Accepted: 08/12/2015] [Indexed: 01/17/2023]
Affiliation(s)
- Camile S. Behling
- Department of Biophysics; Program of Cellular and Molecular Biology; Federal University of Rio Grande do Sul; Porto Alegre Brazil
| | - Alexey S. Andrade
- Department of Biophysics; Program of Cellular and Molecular Biology; Federal University of Rio Grande do Sul; Porto Alegre Brazil
| | - Jordana S. Putti
- Department of Biophysics; Program of Cellular and Molecular Biology; Federal University of Rio Grande do Sul; Porto Alegre Brazil
| | - Camila D. Mahl
- Department of Biophysics; Program of Cellular and Molecular Biology; Federal University of Rio Grande do Sul; Porto Alegre Brazil
| | - Fernanda S. Hackenhaar
- Department of Biophysics; Program of Cellular and Molecular Biology; Federal University of Rio Grande do Sul; Porto Alegre Brazil
| | - Ana Carolina A. da Silva
- Department of Biophysics; Program of Cellular and Molecular Biology; Federal University of Rio Grande do Sul; Porto Alegre Brazil
| | - Mélany Natuane C. e Silva
- Department of Biophysics; Program of Cellular and Molecular Biology; Federal University of Rio Grande do Sul; Porto Alegre Brazil
| | - Tiago B. Salomon
- Department of Biophysics; Program of Cellular and Molecular Biology; Federal University of Rio Grande do Sul; Porto Alegre Brazil
| | - Carla E. I. dos Santos
- Ion Implantation Laboratory; Institute of Physics; Federal University of Rio Grande do Sul; Porto Alegre Brazil
| | - Johnny F. Dias
- Ion Implantation Laboratory; Institute of Physics; Federal University of Rio Grande do Sul; Porto Alegre Brazil
| | - Mara S. Benfato
- Department of Biophysics; Program of Cellular and Molecular Biology; Federal University of Rio Grande do Sul; Porto Alegre Brazil
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Dias V, Trevizol F, Roversi K, Kuhn F, Roversi K, Pase C, Barcelos R, Emanuelli T, Bürger M. Trans-fat supplementation over two generations of rats exacerbates behavioral and biochemical damages in a model of mania: Co-treatment with lithium. Life Sci 2015; 132:6-12. [DOI: 10.1016/j.lfs.2015.04.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Revised: 03/04/2015] [Accepted: 04/09/2015] [Indexed: 12/25/2022]
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Lee HJ, Ryu JM, Jung YH, Oh SY, Lee SJ, Han HJ. Novel Pathway for Hypoxia-Induced Proliferation and Migration in Human Mesenchymal Stem Cells: Involvement of HIF-1α, FASN, and mTORC1. Stem Cells 2015; 33:2182-95. [DOI: 10.1002/stem.2020] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2014] [Accepted: 02/28/2015] [Indexed: 12/24/2022]
Affiliation(s)
- Hyun Jik Lee
- BK21 PLUS Creative Veterinary Research Center; Seoul National University; Seoul Korea
| | - Jung Min Ryu
- Department of Veterinary Physiology, College of Veterinary Medicine; Research Institute for Veterinary Science, Seoul National University; Seoul Korea
| | - Young Hyun Jung
- BK21 PLUS Creative Veterinary Research Center; Seoul National University; Seoul Korea
| | - Sang Yub Oh
- BK21 PLUS Creative Veterinary Research Center; Seoul National University; Seoul Korea
| | - Sei-Jung Lee
- BK21 PLUS Creative Veterinary Research Center; Seoul National University; Seoul Korea
| | - Ho Jae Han
- BK21 PLUS Creative Veterinary Research Center; Seoul National University; Seoul Korea
- Department of Veterinary Physiology, College of Veterinary Medicine; Research Institute for Veterinary Science, Seoul National University; Seoul Korea
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Cell biology of the NCL proteins: What they do and don't do. Biochim Biophys Acta Mol Basis Dis 2015; 1852:2242-55. [PMID: 25962910 DOI: 10.1016/j.bbadis.2015.04.027] [Citation(s) in RCA: 128] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 04/23/2015] [Accepted: 04/24/2015] [Indexed: 02/06/2023]
Abstract
The fatal, primarily childhood neurodegenerative disorders, neuronal ceroid lipofuscinoses (NCLs), are currently associated with mutations in 13 genes. The protein products of these genes (CLN1 to CLN14) differ in their function and their intracellular localization. NCL-associated proteins have been localized mostly in lysosomes (CLN1, CLN2, CLN3, CLN5, CLN7, CLN10, CLN12 and CLN13) but also in the Endoplasmic Reticulum (CLN6 and CLN8), or in the cytosol associated to vesicular membranes (CLN4 and CLN14). Some of them such as CLN1 (palmitoyl protein thioesterase 1), CLN2 (tripeptidyl-peptidase 1), CLN5, CLN10 (cathepsin D), and CLN13 (cathepsin F), are lysosomal soluble proteins; others like CLN3, CLN7, and CLN12, have been proposed to be lysosomal transmembrane proteins. In this review, we give our views and attempt to summarize the proposed and confirmed functions of each NCL protein and describe and discuss research results published since the last review on NCL proteins. This article is part of a Special Issue entitled: "Current Research on the Neuronal Ceroid Lipofuscinoses (Batten Disease)".
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Hiller B. Recent developments in lipid metabolism in ruminants – the role of fat in maintaining animal health and performance. ANIMAL PRODUCTION SCIENCE 2014. [DOI: 10.1071/an14555] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Optimising farm animal performance has long been the key focus of worldwide livestock production research. Advances in the understanding of metabolism/phenotype associations have outlined the central role of the lipid metabolism of farm animals for economically relevant phenotypic traits, such as animal health (immune status, fertility/reproductive capacity, adaptability/metabolic flexibility, robustness, well being) and performance aspects (meat/milk quality and quantity) and have led to an extensive exploitation of lipid metabolism manipulation strategies (e.g. tailored nutritional regimes, alimentary/intravenous fat supplementation, rumen-protected fat feeding, hormone application). This contribution gives an overview of established concepts to tailor animals’ lipid metabolism and highlights novel strategies to expand these application-oriented approaches via improved analysis tools, omics-approaches, cell model systems and systems biology methods.
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Sondhi D, Rosenberg JB, Van de Graaf BG, Kaminsky SM, Crystal RG. Advances in the treatment of neuronal ceroid lipofuscinosis. Expert Opin Orphan Drugs 2013. [DOI: 10.1517/21678707.2013.852081] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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23
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NCL disease mechanisms. Biochim Biophys Acta Mol Basis Dis 2013; 1832:1882-93. [DOI: 10.1016/j.bbadis.2013.05.014] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Revised: 05/08/2013] [Accepted: 05/09/2013] [Indexed: 01/13/2023]
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Hussain G, Schmitt F, Loeffler JP, Gonzalez de Aguilar JL. Fatting the brain: a brief of recent research. Front Cell Neurosci 2013; 7:144. [PMID: 24058332 PMCID: PMC3766822 DOI: 10.3389/fncel.2013.00144] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Accepted: 08/19/2013] [Indexed: 01/06/2023] Open
Abstract
Fatty acids are of paramount importance to all cells, since they provide energy, function as signaling molecules, and sustain structural integrity of cellular membranes. In the nervous system, where fatty acids are found in huge amounts, they participate in its development and maintenance throughout life. Growing evidence strongly indicates that fatty acids in their own right are also implicated in pathological conditions, including neurodegenerative diseases, mental disorders, stroke, and trauma. In this review, we focus on recent studies that demonstrate the relationships between fatty acids and function and dysfunction of the nervous system. Fatty acids stimulate gene expression and neuronal activity, boost synaptogenesis and neurogenesis, and prevent neuroinflammation and apoptosis. By doing so, they promote brain development, ameliorate cognitive functions, serve as anti-depressants and anti-convulsants, bestow protection against traumatic insults, and enhance repairing processes. On the other hand, unbalance between different fatty acid families or excess of some of them generate deleterious side effects, which limit the translatability of successful results in experimental settings into effective therapeutic strategies for humans. Despite these constraints, there exists realistic evidence to consider that nutritional therapies based on fatty acids can be of benefit to several currently incurable nervous system diseases.
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Affiliation(s)
- Ghulam Hussain
- UMR_S 1118, Université de Strasbourg Strasbourg, France ; Mécanismes Centraux et Périphériques de la Neurodégénérescence, U1118, Institut National de la Santé et de la Recherche Médicale, Faculté de Médecine, Université de Strasbourg Strasbourg, France
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Cassol E, Misra V, Holman A, Kamat A, Morgello S, Gabuzda D. Plasma metabolomics identifies lipid abnormalities linked to markers of inflammation, microbial translocation, and hepatic function in HIV patients receiving protease inhibitors. BMC Infect Dis 2013; 13:203. [PMID: 23641933 PMCID: PMC3655873 DOI: 10.1186/1471-2334-13-203] [Citation(s) in RCA: 103] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Accepted: 04/25/2013] [Indexed: 02/06/2023] Open
Abstract
Background Metabolic abnormalities are common in HIV-infected individuals on antiretroviral therapy (ART), but the biochemical details and underlying mechanisms of these disorders have not been defined. Methods Untargeted metabolomic profiling of plasma was performed for 32 HIV patients with low nadir CD4 counts (<300 cells/ul) on protease inhibitor (PI)-based ART and 20 healthy controls using liquid or gas chromatography and mass spectrometry. Effects of Hepatitis C (HCV) co-infection and relationships between altered lipid metabolites and markers of inflammation, microbial translocation, and hepatic function were examined. Unsupervised hierarchical clustering, principal component analysis (PCA), partial least squares discriminant analysis (PLS-DA), Random forest, pathway mapping, and metabolite set enrichment analysis (MSEA) were performed using dChip, Metaboanalyst, and MSEA software. Results A 35-metabolite signature mapping to lipid, amino acid, and nucleotide metabolism distinguished HIV patients with advanced disease on PI-based ART from controls regardless of HCV serostatus (p<0.05, false discovery rate (FDR)<0.1). Many altered lipids, including bile acids, sulfated steroids, polyunsaturated fatty acids, and eicosanoids, were ligands of nuclear receptors that regulate metabolism and inflammation. Distinct clusters of altered lipids correlated with markers of inflammation (interferon-α and interleukin-6), microbial translocation (lipopolysaccharide (LPS) and LPS-binding protein), and hepatic function (bilirubin) (p<0.05). Lipid alterations showed substantial overlap with those reported in non-alcoholic fatty liver disease (NALFD). Increased bile acids were associated with noninvasive markers of hepatic fibrosis (FIB-4, APRI, and YKL-40) and correlated with acylcarnitines, a marker of mitochondrial dysfunction. Conclusions Lipid alterations in HIV patients receiving PI-based ART are linked to markers of inflammation, microbial translocation, and hepatic function, suggesting that therapeutic strategies attenuating dysregulated innate immune activation and hepatic dysfunction may be beneficial for prevention and treatment of metabolic disorders in HIV patients.
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Affiliation(s)
- Edana Cassol
- Department of Cancer Immunology and AIDS, Dana-Farber Cancer Institute, Boston, MA 02215, USA
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Kang S, Seo JH, Heo TH, Kim SJ. Batten disease is linked to altered expression of mitochondria-related metabolic molecules. Neurochem Int 2013; 62:931-5. [PMID: 23524239 DOI: 10.1016/j.neuint.2013.03.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Revised: 03/01/2013] [Accepted: 03/12/2013] [Indexed: 12/29/2022]
Abstract
Batten disease (BD)--also known as juvenile neuronal ceroid lipofuscinoses-is an inherited neurodegenerative disorder caused by CLN3 gene mutations. Although CLN3-related oxidative and mitochondrial stresses have been studied in BD, the pathologic mechanism of the disease is not clearly understood. To address the molecular factors linked to high levels of oxidative stress in BD, we examined the expression of mitochondria-related metabolic molecules, including pyruvate dehydrogenase (PDH), ATP citrate lyase (ACL), and phosphoenolpyruvate carboxykinase (PEPCK), as well as the apoptosis-related ganglioside, acetyl-GD3. We observed an increased expression of PDH and a decreased expression of ACL, PEPCK, and acetyl-GD3 in BD lymphoblast cells compared to normal cells, possibly resulting in the high ROS levels, mitochondrial membrane depolarization, and apoptosis typically found in BD.
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Affiliation(s)
- Sunyang Kang
- Department of Biotechnology, Hoseo University, 165 Baebang, Asan, Chungnam, Republic of Korea
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Passos PP, Borba JMC, Rocha-de-Melo AP, Guedes RCA, da Silva RP, Filho WTM, Gouveia KMM, Navarro DMDAF, Santos GKN, Borner R, Picanço-Diniz CW, Pereira A, de Oliveira Costa MSM, Rodrigues MCA, Andrade-da-Costa BLDS. Dopaminergic cell populations of the rat substantia nigra are differentially affected by essential fatty acid dietary restriction over two generations. J Chem Neuroanat 2012; 44:66-75. [DOI: 10.1016/j.jchemneu.2012.05.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2012] [Revised: 05/05/2012] [Accepted: 05/31/2012] [Indexed: 11/16/2022]
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Gazzin S, Strazielle N, Tiribelli C, Ghersi-Egea JF. Transport and metabolism at blood-brain interfaces and in neural cells: relevance to bilirubin-induced encephalopathy. Front Pharmacol 2012; 3:89. [PMID: 22629246 PMCID: PMC3355510 DOI: 10.3389/fphar.2012.00089] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Accepted: 04/25/2012] [Indexed: 01/16/2023] Open
Abstract
Bilirubin, the end-product of heme catabolism, circulates in non-pathological plasma mostly as a protein-bound species. When bilirubin concentration builds up, the free fraction of the molecule increases. Unbound bilirubin then diffuses across blood-brain interfaces (BBIs) into the brain, where it accumulates and exerts neurotoxic effects. In this classical view of bilirubin neurotoxicity, BBIs act merely as structural barriers impeding the penetration of the pigment-bound carrier protein, and neural cells are considered as passive targets of its toxicity. Yet, the role of BBIs in the occurrence of bilirubin encephalopathy appears more complex than being simple barriers to the diffusion of bilirubin, and neural cells such as astrocytes and neurons can play an active role in controlling the balance between the neuroprotective and neurotoxic effects of bilirubin. This article reviews the emerging in vivo and in vitro data showing that transport and metabolic detoxification mechanisms at the blood-brain and blood-cerebrospinal fluid barriers may modulate bilirubin flux across both cellular interfaces, and that these protective functions can be affected in chronic unconjugated hyperbilirubinemia. Then the in vivo and in vitro arguments in favor of the physiological antioxidant function of intracerebral bilirubin are presented, as well as the potential role of transporters such as ABCC1 and metabolizing enzymes such as cytochromes P-450 in setting the cerebral cell- and structure-specific toxicity of bilirubin following hyperbilirubinemia. The relevance of these data to the pathophysiology of bilirubin-induced neurological diseases is discussed.
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Affiliation(s)
- Silvia Gazzin
- Italian Liver Foundation, AREA Science Park Basovizza Trieste, Italy
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Nunes-Tavares N, Santos LE, Stutz B, Brito-Moreira J, Klein WL, Ferreira ST, de Mello FG. Inhibition of choline acetyltransferase as a mechanism for cholinergic dysfunction induced by amyloid-β peptide oligomers. J Biol Chem 2012; 287:19377-85. [PMID: 22505713 DOI: 10.1074/jbc.m111.321448] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Dysregulated cholinergic signaling is an early hallmark of Alzheimer disease (AD), usually ascribed to degeneration of cholinergic neurons induced by the amyloid-β peptide (Aβ). It is now generally accepted that neuronal dysfunction and memory deficits in the early stages of AD are caused by the neuronal impact of soluble Aβ oligomers (AβOs). AβOs build up in AD brain and specifically attach to excitatory synapses, leading to synapse dysfunction. Here, we have investigated the possibility that AβOs could impact cholinergic signaling. The activity of choline acetyltransferase (ChAT, the enzyme that carries out ACh production) was inhibited by ~50% in cultured cholinergic neurons exposed to low nanomolar concentrations of AβOs. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) reduction, lactate dehydrogenase release, and [(3)H]choline uptake assays showed no evidence of neuronal damage or loss of viability that could account for reduced ChAT activity under these conditions. Glutamate receptor antagonists fully blocked ChAT inhibition and oxidative stress induced by AβOs. Antioxidant polyunsaturated fatty acids had similar effects, indicating that oxidative damage may be involved in ChAT inhibition. Treatment with insulin, previously shown to down-regulate neuronal AβO binding sites, fully prevented AβO-induced inhibition of ChAT. Interestingly, we found that AβOs selectively bind to ~50% of cultured cholinergic neurons, suggesting that ChAT is fully inhibited in AβO-targeted neurons. Reduction in ChAT activity instigated by AβOs may thus be a relevant event in early stage AD pathology, preceding the loss of cholinergic neurons commonly observed in AD brains.
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Affiliation(s)
- Nilson Nunes-Tavares
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ 21944-590, Brazil
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de Oliveira DM, Ferreira Lima RM, El-Bachá RS. Brain rust: recent discoveries on the role of oxidative stress in neurodegenerative diseases. Nutr Neurosci 2012; 15:94-102. [PMID: 22583954 DOI: 10.1179/1476830511y.0000000029] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Oxidative stress (OS) and damages due to excessive reactive oxygen species (ROS) are common causes of injuries to cells and organisms. The prevalence of neurodegenerative diseases (ND) increases with aging and much of the research involving ROS and OS has emerged from works in this field. This text reviews some recent published articles about the role of OS in ND. Since there are many reviews in this field, the focus was centered in articles published recently. The Scientific Journals Directory supported by the Brazilian Ministry of Education Office for the Coordination of Higher Educational Personnel Improvement (CAPES) was used to search, download, and review articles. The search engine looked for the terms 'oxidative stress AND neurodegenerative diseases AND nutrition' in 10 different scientific collections. Biochemical markers for ND lack sensitivity or specificity for diagnosis or for tracking response to therapy today. OS has an intimate connection with ND, albeit low levels of ROS seem to protect the brain. Deleterious changes in mitochondria, OS, calcium, glucocorticoids, inflammation, trace metals, insulin, cell cycle, protein aggregation, and hundreds to thousands of genes occur in ND. The interaction of genes with their environment, may explain ND. Although OS has received much attention over the years, which increased the number of scientific works on antioxidant interventions, no one knows how to stop or delay ND at present. Interventions in vitro, in vivo, and in humans will continue to contribute for a better understanding of these pathologies.
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Shacka JJ. Mouse models of neuronal ceroid lipofuscinoses: useful pre-clinical tools to delineate disease pathophysiology and validate therapeutics. Brain Res Bull 2012; 88:43-57. [PMID: 22502604 DOI: 10.1016/j.brainresbull.2012.03.003] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2011] [Revised: 03/04/2012] [Accepted: 03/14/2012] [Indexed: 12/11/2022]
Abstract
The neuronal ceroid lipofuscinoses (NCL, also known as Batten disease) is a devastating neurodegenerative diseases caused by mutations in either soluble enzymes or membrane-associated structural proteins that result in lysosome dysfunction. Different forms of NCL were defined initially by age of onset, affected population and/or type of storage material but collectively represent the most prevalent pediatric hereditary neurovisceral storage disorder. Specific gene mutations are now known for each subclass of NCL in humans that now largely define the disease: cathepsin D (CTSD) for congenital (CLN10 form); palmitoyl protein thioesterase 1 (PPT1) for infantile (CLN1 form); tripeptidyl peptidase 1 (TPP1) for classic late infantile (CLN2 form); variant late infantile-CLN5, CLN6 or CLN8 for variant late infantile forms; and CLN3 for juvenile (CLN3 form). Several mouse models of NCL have been developed, or in some cases exist sporadically, that exhibit mutations producing a progressive neurodegenerative phenotype similar to that observed in human NCL. The study of these mouse models of NCL has dramatically advanced our knowledge of NCL pathophysiology and in some cases has helped delineate the function of proteins mutated in human NCL. In addition, NCL mutant mice have been tested for several different therapeutic approaches and as such they have become important pre-clinical models for validating treatment options. In this review we will assess the current state of mouse models of NCL with regards to their unique pathophysiology and how these mice have helped investigators achieve a better understanding of human NCL disease and therapy.
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Affiliation(s)
- John J Shacka
- Neuropathology Division, Department of Pathology, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
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Impact of the carotenoid astaxanthin on phagocytic capacity and ROS/RNS production of human neutrophils treated with free fatty acids and high glucose. Int Immunopharmacol 2011; 11:2220-6. [DOI: 10.1016/j.intimp.2011.10.004] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2011] [Accepted: 10/04/2011] [Indexed: 01/08/2023]
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Otton R, Marin DP, Bolin AP, de Cássia Santos Macedo R, Campoio TR, Fineto C, Guerra BA, Leite JR, Barros MP, Mattei R. Combined fish oil and astaxanthin supplementation modulates rat lymphocyte function. Eur J Nutr 2011; 51:707-18. [PMID: 21972007 DOI: 10.1007/s00394-011-0250-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2011] [Accepted: 09/16/2011] [Indexed: 12/31/2022]
Abstract
PURPOSE Higher intakes of n-3 polyunsaturated fatty acids that are abundant in marine fishes have been long described as a "good nutritional intervention" with increasing clinical benefits to cardiovascular health, inflammation, mental, and neurodegenerative diseases. The present study was designed to investigate the effect of daily fish oil (FO-10 mg EPA/kg body weight (BW) and 7 mg DHA/kg BW) intake by oral gavage associated with the antioxidant astaxanthin (ASTA-1 mg/kg BW) on the redox metabolism and the functional properties of lymphocytes from rat lymph nodes. METHODS This study was conducted by measurements of lymphocyte proliferation capacity, ROS production [superoxide (O₂(•-)) and hydrogen peroxide (H₂O₂)], nitric oxide (NO(•)) generation, intracellular calcium release, oxidative damage to lipids and proteins, activities of major antioxidant enzymes, GSH/GSSG content, and cytokines release. RESULTS After 45 days of FO + ASTA supplementation, the proliferation capacity of activated T- and B-lymphocytes was significantly diminished followed by lower levels of O₂(•-), H₂O₂ and NO(•) production, and increased activities of total/SOD, GR and GPx, and calcium release in cytosol. ASTA was able to prevent oxidative modification in cell structures through the suppression of the oxidative stress condition imposed by FO. L: -selectin was increased by FO, and IL-1β was decreased only by ASTA supplementation. CONCLUSION We can propose that association of ASTA with FO could be a good strategy to prevent oxidative stress induced by polyunsaturated fatty acids and also to potentiate immuno-modulatory effects of FO.
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Affiliation(s)
- Rosemari Otton
- Postgraduate Program, Health Sciences, CBS, Cruzeiro do Sul University, Sao Paulo, SP, Brazil.
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Terra VC, Arida RM, Rabello GM, Cavalheiro EA, Scorza FA. The utility of omega-3 fatty acids in epilepsy: more than just a farmed tilapia! ARQUIVOS DE NEURO-PSIQUIATRIA 2011; 69:118-21. [PMID: 21359434 DOI: 10.1590/s0004-282x2011000100022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2010] [Accepted: 09/10/2010] [Indexed: 11/22/2022]
Abstract
The epilepsies are one of the most common serious brain disorders and 20 to 30% of people developing epilepsy continue to have seizures and are refractory to treatment with the currently available therapies. Approximately one in a 1000 patients with chronic epilepsy will die suddenly, unexpectedly, and without explanation, even with post-mortem examination and this phenomenon is called sudden unexplained death in epilepsy (SUDEP). Understanding the mechanisms underlying SUDEP may lead to the identification of previously unrecognized risk factors that are more amenable to correction. We discuss here the possible implications of omega-3 fatty acids consumption on SUDEP prevention.
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Affiliation(s)
- Vera C Terra
- Centro de Cirurgia de Epilepsia, Departamento de Neurociências e Ciências do Comportamento, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, SP, Brazil
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Aberrant lipid metabolism disrupts calcium homeostasis causing liver endoplasmic reticulum stress in obesity. Nature 2011; 473:528-31. [PMID: 21532591 PMCID: PMC3102791 DOI: 10.1038/nature09968] [Citation(s) in RCA: 776] [Impact Index Per Article: 59.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2010] [Accepted: 02/22/2011] [Indexed: 02/08/2023]
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Lee MJ, Park SH, Han JH, Hong YK, Hwang S, Lee S, Kim D, Han SY, Kim ES, Cho KS. The effects of hempseed meal intake and linoleic acid on Drosophila models of neurodegenerative diseases and hypercholesterolemia. Mol Cells 2011; 31:337-42. [PMID: 21331775 PMCID: PMC3933972 DOI: 10.1007/s10059-011-0042-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2010] [Revised: 12/30/2010] [Accepted: 01/05/2011] [Indexed: 11/28/2022] Open
Abstract
Hempseed is rich in polyunsaturated fatty acids (PUFAs), which have potential as therapeutic compounds for the treatment of neurodegenerative and cardiovascular disease. However, the effect of hempseed meal (HSM) intake on the animal models of these diseases has yet to be elucidated. In this study, we assessed the effects of the intake of HSM and PUFAs on oxidative stress, cytotoxicity and neurological phenotypes, and cholesterol uptake, using Drosophila models. HSM intake was shown to reduce H(2)O(2) toxicity markedly, indicating that HSM exerts a profound antioxidant effect. Meanwhile, intake of HSM, as well as linoleic or linolenic acids (major PUFA components of HSM) was shown to ameliorate Aβ42-induced eye degeneration, thus suggesting that these compounds exert a protective effect against Aβ42 cytotoxicity. On the contrary, locomotion and longevity in the Parkinson's disease model and eye degeneration in the Huntington's disease model were unaffected by HSM feeding. Additionally, intake of HSM or linoleic acid was shown to reduce cholesterol uptake significantly. Moreover, linoleic acid intake has been shown to delay pupariation, and cholesterol feeding rescued the linoleic acid-induced larval growth delay, thereby indicating that linoleic acid acts antagonistically with cholesterol during larval growth. In conclusion, our results indicate that HSM and linoleic acid exert inhibitory effects on both Aβ42 cytotoxicity and cholesterol uptake, and are potential candidates for the treatment of Alzheimer's disease and cardiovascular disease.
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Affiliation(s)
- Min Jung Lee
- Department of Biological Sciences, Konkuk University, Seoul 143-701, Korea
| | - Seung Hwan Park
- Department of Biological Sciences, Konkuk University, Seoul 143-701, Korea
| | - Ju Hua Han
- Department of Biological Sciences, Konkuk University, Seoul 143-701, Korea
| | - Yoon Ki Hong
- Department of Biological Sciences, Konkuk University, Seoul 143-701, Korea
| | - Soojin Hwang
- Department of Biological Sciences, Konkuk University, Seoul 143-701, Korea
| | - Soojin Lee
- Department of Biological Sciences, Konkuk University, Seoul 143-701, Korea
| | - Darae Kim
- Department of Biological Sciences, Konkuk University, Seoul 143-701, Korea
| | - Seung Yeop Han
- Department of Biological Sciences, Konkuk University, Seoul 143-701, Korea
| | - Eun Soo Kim
- Department of Biological Sciences, Konkuk University, Seoul 143-701, Korea
| | - Kyoung Sang Cho
- Department of Biological Sciences, Konkuk University, Seoul 143-701, Korea
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Tuxworth RI, Chen H, Vivancos V, Carvajal N, Huang X, Tear G. The Batten disease gene CLN3 is required for the response to oxidative stress. Hum Mol Genet 2011; 20:2037-47. [PMID: 21372148 PMCID: PMC3080613 DOI: 10.1093/hmg/ddr088] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Mutations in the CLN3 gene cause juvenile neuronal ceroid lipofuscinosis (JNCL or Batten disease), an early onset neurodegenerative disorder. JNCL is the most common of the NCLs, a group of disorders with infant or childhood onset that are caused by single gene mutations. The NCLs, although relatively rare, share many pathological and clinical similarities with the more common late-onset neurodegenerative disorders, while their simple genetic basis makes them an excellent paradigm. The early onset and rapid disease progression in the NCLs suggests that one or more key cellular processes are severely compromised. To identify the functional pathways compromised in JNCL, we have performed a gain-of-function modifier screen in Drosophila. We find that CLN3 interacts genetically with the core stress signalling pathways and components of stress granules, suggesting a function in stress responses. In support of this, we find that Drosophila lacking CLN3 function are hypersensitive to oxidative stress yet they respond normally to other physiological stresses. Overexpression of CLN3 is sufficient to confer increased resistance to oxidative stress. We find that CLN3 mutant flies perceive conditions of increased oxidative stress correctly but are unable to detoxify reactive oxygen species, suggesting that their ability to respond is compromised. Together, our data suggest that the lack of CLN3 function leads to a failure to manage the response to oxidative stress and this may be the key deficit in JNCL that leads to neuronal degeneration.
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Affiliation(s)
- Richard I Tuxworth
- MRC Centre for Developmental Neurobiology, King's College London, New Hunt's House, Guy's Hospital Campus, London SE1 1UL, UK
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