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Arabi TZ, Alabdulqader AA, Sabbah BN, Ouban A. Brain-inhabiting bacteria and neurodegenerative diseases: the "brain microbiome" theory. Front Aging Neurosci 2023; 15:1240945. [PMID: 37927338 PMCID: PMC10620799 DOI: 10.3389/fnagi.2023.1240945] [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: 06/15/2023] [Accepted: 09/29/2023] [Indexed: 11/07/2023] Open
Abstract
Controversies surrounding the validity of the toxic proteinopathy theory of Alzheimer's disease have led the scientific community to seek alternative theories in the pathogenesis of neurodegenerative disorders (ND). Recent studies have provided evidence of a microbiome in the central nervous system. Some have hypothesized that brain-inhabiting organisms induce chronic neuroinflammation, leading to the development of a spectrum of NDs. Bacteria such as Chlamydia pneumoniae, Helicobacter pylori, and Cutibacterium acnes have been found to inhabit the brains of ND patients. Furthermore, several fungi, including Candida and Malassezia species, have been identified in the central nervous system of these patients. However, there remains several limitations to the brain microbiome hypothesis. Varying results across the literature, concerns regarding sample contamination, and the presence of exogenous deoxyribonucleic acids have led to doubts about the hypothesis. These results provide valuable insight into the pathogenesis of NDs. Herein, we provide a review of the evidence for and against the brain microbiome theory and describe the difficulties facing the hypothesis. Additionally, we define possible mechanisms of bacterial invasion of the brain and organism-related neurodegeneration in NDs and the potential therapeutic premises of this theory.
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Affiliation(s)
| | | | | | - Abderrahman Ouban
- College of Medicine, Alfaisal University, Riyadh, Saudi Arabia
- Department of Pathology, College of Medicine, Alfaisal University, Riyadh, Saudi Arabia
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2
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Janik-Karpinska E, Ceremuga M, Wieckowska M, Szyposzynska M, Niemcewicz M, Synowiec E, Sliwinski T, Bijak M. Direct T-2 Toxicity on Human Skin-Fibroblast Hs68 Cell Line-In Vitro Study. Int J Mol Sci 2022; 23:ijms23094929. [PMID: 35563320 PMCID: PMC9105691 DOI: 10.3390/ijms23094929] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 04/23/2022] [Accepted: 04/26/2022] [Indexed: 11/16/2022] Open
Abstract
T-2 toxin is produced by different Fusarium species, and it can infect crops such as wheat, barley, and corn. It is known that the T-2 toxin induces various forms of toxicity such as hepatotoxicity, nephrotoxicity, immunotoxicity, and neurotoxicity. In addition, T-2 toxin possesses a strong dermal irritation effect and can be absorbed even through intact skin. As a dermal irritant agent, it is estimated to be 400 times more toxic than sulfur mustard. Toxic effects can include redness, blistering, and necrosis, but the molecular mechanism of these effects still remains unknown. This in vitro study focused on the direct toxicity of T-2 toxin on human skin-fibroblast Hs68 cell line. As a result, the level of toxicity of T-2 toxin and its cytotoxic mechanism of action was determined. In cytotoxicity assays, the dose and time-dependent cytotoxic effect of T-2 on a cell line was observed. Bioluminometry results showed that relative levels of ATP in treated cells were decreased. Further analysis of the toxin's impact on the induction of apoptosis and necrosis processes showed the significant predominance of PI-stained cells, lack of caspase 3/7 activity, and increased concentration of released Human Cytokeratin 18 in treated cells, which indicates the necrosis process. In conclusion, the results of an in vitro human skin fibroblast model revealed for the first time that the T-2 toxin induces necrosis as a toxicity effect. These results provide new insight into the toxic T-2 mechanism on the skin.
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Affiliation(s)
- Edyta Janik-Karpinska
- Biohazard Prevention Centre, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland; (E.J.-K.); (M.W.); (M.N.)
| | - Michal Ceremuga
- Military Institute of Armament Technology, Prymasa Stefana Wyszyńskiego 7, 05-220 Zielonka, Poland;
| | - Magdalena Wieckowska
- Biohazard Prevention Centre, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland; (E.J.-K.); (M.W.); (M.N.)
| | - Monika Szyposzynska
- CBRN Reconnaissance and Decontamination Department, Military Institute of Chemistry and Radiometry, Antoniego Chrusciela “Montera” 105, 00-910 Warsaw, Poland;
| | - Marcin Niemcewicz
- Biohazard Prevention Centre, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland; (E.J.-K.); (M.W.); (M.N.)
| | - Ewelina Synowiec
- Laboratory of Medical Genetics, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland; (E.S.); (T.S.)
| | - Tomasz Sliwinski
- Laboratory of Medical Genetics, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland; (E.S.); (T.S.)
| | - Michal Bijak
- Biohazard Prevention Centre, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland; (E.J.-K.); (M.W.); (M.N.)
- Correspondence:
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3
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Molina-Pintor I, Rojas-García A, Medina-Díaz I, Barrón-Vivanco B, Bernal-Hernández Y, Ortega-Cervantes L, Ramos A, Herrera-Moreno J, González-Arias C. An update on genotoxic and epigenetic studies of fumonisin B1. WORLD MYCOTOXIN J 2021. [DOI: 10.3920/wmj2021.2720] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Fumonisins (FBs), a widespread group of mycotoxins produced by Fusarium spp., are natural contaminants in cereals and foodstuffs. Fumonisin B1 (FB1) is the most toxic and prevalent mycotoxin of this group, and it has been reported that FB1 accounts for 70-80% of FBs produced by the mycotoxigenic strains. The mode of action of FB1 depends on the structural similarity with sphinganine/sphingosine N-acyltransferase. This fact causes an accumulation of sphingoid bases and blocks the sphingolipid biosynthesis or the function of sphingolipids. Diverse toxic effects and diseases such as hepatocarcinogenicity, hepatotoxicity, nephrotoxicity, and cytotoxicity have been reported, and diseases like leukoencephalomalacia in horses and pulmonary oedema in horses and swine have been described. In humans, FBs have been associated with oesophageal cancer, liver cancer, neural tube defects, and infantile growth delay. However, despite the International Agency for Research on Cancer designated FB1 as a possibly carcinogenic to humans, its genotoxicity and epigenetic properties have not been clearly elucidated. This review aims to summarise the progress in research about the genotoxic and epigenetics effects of FB1.
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Affiliation(s)
- I.B. Molina-Pintor
- Laboratorio de Contaminación y Toxicología Ambiental, Secretaría de Investigación y Posgrado, Universidad Autónoma de Nayarit, Los fresnos s/n. Tepic, Nayarit C.P. 63155, México
- Posgrado en Ciencias Biológico Agropecuarias, Unidad Académica de Agricultura, Km. 9 Carretera Tepic-Compostela, Xalisco, Nayarit, Mexico
| | - A.E. Rojas-García
- Laboratorio de Contaminación y Toxicología Ambiental, Secretaría de Investigación y Posgrado, Universidad Autónoma de Nayarit, Los fresnos s/n. Tepic, Nayarit C.P. 63155, México
| | - I.M. Medina-Díaz
- Laboratorio de Contaminación y Toxicología Ambiental, Secretaría de Investigación y Posgrado, Universidad Autónoma de Nayarit, Los fresnos s/n. Tepic, Nayarit C.P. 63155, México
| | - B.S. Barrón-Vivanco
- Laboratorio de Contaminación y Toxicología Ambiental, Secretaría de Investigación y Posgrado, Universidad Autónoma de Nayarit, Los fresnos s/n. Tepic, Nayarit C.P. 63155, México
| | - Y.Y. Bernal-Hernández
- Laboratorio de Contaminación y Toxicología Ambiental, Secretaría de Investigación y Posgrado, Universidad Autónoma de Nayarit, Los fresnos s/n. Tepic, Nayarit C.P. 63155, México
| | - L. Ortega-Cervantes
- Laboratorio de Contaminación y Toxicología Ambiental, Secretaría de Investigación y Posgrado, Universidad Autónoma de Nayarit, Los fresnos s/n. Tepic, Nayarit C.P. 63155, México
| | - A.J. Ramos
- Food Technology Department, Lleida University, UTPV-XaRTA, Agrotecnio Center, Av. Rovira Roure 191, Lleida, 25198, Spain
| | - J.F. Herrera-Moreno
- Laboratory of Precision Environmental Health Sciences, Mailman School of Public Health, Columbia University, 630 west 168th Street, P&S Building Room 16-416, New York, NY, USA
| | - C.A. González-Arias
- Laboratorio de Contaminación y Toxicología Ambiental, Secretaría de Investigación y Posgrado, Universidad Autónoma de Nayarit, Los fresnos s/n. Tepic, Nayarit C.P. 63155, México
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Food-Origin Mycotoxin-Induced Neurotoxicity: Intend to Break the Rules of Neuroglia Cells. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:9967334. [PMID: 34621467 PMCID: PMC8492254 DOI: 10.1155/2021/9967334] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Revised: 06/29/2021] [Accepted: 09/14/2021] [Indexed: 12/28/2022]
Abstract
Mycotoxins are key risk factors in human food and animal feed. Most of food-origin mycotoxins could easily enter the organism and evoke systemic toxic effects, such as aflatoxin B1 (AFB1), ochratoxin A (OTA), T-2 toxin, deoxynivalenol (DON), zearalenone (ZEN), fumonisin B1 (FB1), and 3-nitropropionic acid (3-NPA). For the last decade, the researches have provided much evidences in vivo and in vitro that the brain is an important target organ on mycotoxin-mediated neurotoxic phenomenon and neurodegenerative diseases. As is known to all, glial cells are the best regulator and defender of neurons, and a few evaluations about the effects of mycotoxins on glial cells such as astrocytes or microglia have been conducted. The fact that mycotoxin contamination may be a key factor in neurotoxicity and glial dysfunction is exactly the reason why we reviewed the activation, oxidative stress, and mitochondrial function changes of glial cells under mycotoxin infection and summarized the mycotoxin-mediated glial cell proliferation disorders, death pathways, and inflammatory responses. The purpose of this paper is to analyze various pathways in which common food-derived mycotoxins can induce glial toxicity and provide a novel perspective for future research on the neurodegenerative diseases.
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5
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Nguyen VTT, König S, Eggert S, Endres K, Kins S. The role of mycotoxins in neurodegenerative diseases: current state of the art and future perspectives of research. Biol Chem 2021; 403:3-26. [PMID: 34449171 DOI: 10.1515/hsz-2021-0214] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 08/16/2021] [Indexed: 01/02/2023]
Abstract
Mycotoxins are fungal metabolites that can cause various diseases in humans and animals. The adverse health effects of mycotoxins such as liver failure, immune deficiency, and cancer are well-described. However, growing evidence suggests an additional link between these fungal metabolites and neurodegenerative diseases. Despite the wealth of these initial reports, reliable conclusions are still constrained by limited access to human patients and availability of suitable cell or animal model systems. This review summarizes knowledge on mycotoxins associated with neurodegenerative diseases and the assumed underlying pathophysiological mechanisms. The limitations of the common in vivo and in vitro experiments to identify the role of mycotoxins in neurotoxicity and thereby in neurodegenerative diseases are elucidated and possible future perspectives to further evolve this research field are presented.
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Affiliation(s)
- Vu Thu Thuy Nguyen
- Department of Psychiatry and Psychotherapy, University Medical Center of the Johannes Gutenberg-University Mainz, Untere Zahlbacher Str. 8, D-55131 Mainz, Germany
| | - Svenja König
- Department of Human Biology and Human Genetics, University of Kaiserslautern, Erwin-Schrödinger-Straße 13, D-67663 Kaiserslautern, Germany
| | - Simone Eggert
- Department of Human Biology and Human Genetics, University of Kaiserslautern, Erwin-Schrödinger-Straße 13, D-67663 Kaiserslautern, Germany
| | - Kristina Endres
- Department of Psychiatry and Psychotherapy, University Medical Center of the Johannes Gutenberg-University Mainz, Untere Zahlbacher Str. 8, D-55131 Mainz, Germany
| | - Stefan Kins
- Department of Human Biology and Human Genetics, University of Kaiserslautern, Erwin-Schrödinger-Straße 13, D-67663 Kaiserslautern, Germany
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Pérez-Fuentes N, Alvariño R, Alfonso A, González-Jartín J, Gegunde S, Vieytes MR, Botana LM. Single and combined effects of regulated and emerging mycotoxins on viability and mitochondrial function of SH-SY5Y cells. Food Chem Toxicol 2021; 154:112308. [PMID: 34062223 DOI: 10.1016/j.fct.2021.112308] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 05/19/2021] [Accepted: 05/25/2021] [Indexed: 12/31/2022]
Abstract
Co-occurrence of emerging and regulated mycotoxins in contaminated samples has been widely documented, but studies about their combined toxicity are scarce. In this report, the regulated mycotoxins deoxynivalenol, fumonisin B1 and zearalenone, and the emerging ones enniatin A, enniatin B and beauvericin were tested in SH-SY5Y human neuroblastoma cells. Their individual and binary combined effects on cell viability and mitochondrial function were evaluated. The results with individual mycotoxins revealed that deoxynivalenol and emerging mycotoxins were the most damaging to neuronal cells, presenting IC50 values between 0.35 and 2.4 μM. Interestingly, non-regulated mycotoxins triggered apoptosis by affecting to mitochondrial membrane potential. However, when regulated and non-regulated mycotoxins were binary mixed, antagonistic effects were found in all cases. Finally, cow feed and milk extracts were analysed by UHPLC-MS/MS, detecting the presence of several mycotoxins included in this study. These extracts were tested in neuroblastoma cells, and damaging effects on cell viability were found. Although binary combinations of mycotoxins produced antagonistic effects, their mixture in natural matrixes induces greater effects than expected. Therefore, it would be interesting to explore the matrix influence on mycotoxin toxicity, and to continue studying the neurotoxic mechanism of action of emerging mycotoxins, as they could be a health hazard.
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Affiliation(s)
- Nadia Pérez-Fuentes
- Departamento de Farmacología, Facultad de Veterinaria, Universidad de Santiago de Compostela, Lugo, 27002, Spain
| | - Rebeca Alvariño
- Departamento de Farmacología, Facultad de Veterinaria, Universidad de Santiago de Compostela, Lugo, 27002, Spain.
| | - Amparo Alfonso
- Departamento de Farmacología, Facultad de Veterinaria, Universidad de Santiago de Compostela, Lugo, 27002, Spain.
| | - Jesús González-Jartín
- Departamento de Farmacología, Facultad de Veterinaria, Universidad de Santiago de Compostela, Lugo, 27002, Spain
| | - Sandra Gegunde
- Departamento de Farmacología, Facultad de Veterinaria, Universidad de Santiago de Compostela, Lugo, 27002, Spain
| | - Mercedes R Vieytes
- Departamento de Fisiología, Facultad de Veterinaria, Universidad de Santiago de Compostela, Lugo, 27002, Spain
| | - Luis M Botana
- Departamento de Farmacología, Facultad de Veterinaria, Universidad de Santiago de Compostela, Lugo, 27002, Spain
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7
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Short-term neuronal effects of fumonisin B1 on neuronal activity in rodents. Neurotoxicology 2020; 80:41-51. [PMID: 32561249 DOI: 10.1016/j.neuro.2020.06.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 06/05/2020] [Accepted: 06/15/2020] [Indexed: 11/24/2022]
Abstract
Fumonisin B1 (FB1) is a mycotoxin produced by microscopic fungi (mostly Fusarium species), which may infect our major crops. The toxin inhibits the development of these plants and may also have harmful effects on animals and humans consuming the infected crops. FB1 inhibits sphingolipid biosynthesis which leads to altered membrane characteristics and consequently, altered cellular functions. There are some indications that the toxin has inhibitory effects on neuronal activity in case of repeated consumption, presumably due to sphingolipid depletion. However, according to new literature data, FB1 may have acute excitatory neural effects, too, via different mechanisms of action. Therefore, in the present study, we addressed the neuronal network effects of FB1 following acute treatment, using different electrophysiological techniques in vitro and in vivo. Acute treatments with FB1 (10-100 μM) were carried out on brain slices, tissue cultures and live animals. After direct treatment of samples, electrically evoked or spontaneous field potentials were examined in the hippocampus and the neocortex of rat brain slices and in hippocampal cell cultures. In the hippocampus, a short-term increase in the excitability of neuronal networks and individual cells was observed in response to FB1 treatment. In some cases, the initially enhanced excitation was reversed presumably due to overactivation of neuronal networks. Normal spontaneous activity was found to be stimulated in hippocampal cell cultures. Seizure susceptibility was not affected in the neocortex of brain slices. For the verification of the results caused by direct treatment, effects of systemic administration of FB1 (7.5 mg/kg, i.p.) were also examined. Evoked field potentials recorded in vivo from the somatosensory cortex and cell activation measured by the c-fos technique in hippocampus and somatosensory cortex were analyzed. However, the hippocampal and cortical stimulatory effect detected in vitro could not be demonstrated by these in vivo assays. Altogether, the toxin enhanced the basic excitability of neurons and neuronal networks after direct treatment but there were no effects on the given brain areas after systemic treatment in vivo. Based on the observed in vitro FB1 effects and the lack of data on the penetration of FB1 across the blood-brain barrier, we assume that in vivo consequences of FB1 administration can be more prominent in case of perturbed blood-brain barrier functions.
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8
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Goins L, Spassieva S. Sphingoid bases and their involvement in neurodegenerative diseases. Adv Biol Regul 2018; 70:65-73. [PMID: 30377075 DOI: 10.1016/j.jbior.2018.10.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 10/22/2018] [Accepted: 10/23/2018] [Indexed: 06/08/2023]
Abstract
Sphingoid bases (also known as long-chain bases) form the backbone of sphingolipids. Sphingolipids comprise a large group of lipid molecules, which function as the building blocks of biological membranes and play important signaling and regulatory roles within cells. The roles of sphingoid bases in neurotoxicity and neurodegeneration have yet to be fully elucidated, as they are complex and multi-faceted. This comprises a new frontier of research that may provide us with important clues regarding their involvement in neurological health and disease. This paper explores various neurological diseases and conditions which result when the metabolism of sphingoid bases and some of their derivatives, such as sphingosine-1-phosphate and psychosine, becomes compromised due to the inhibition or mutation of key enzymes. Dysregulation of sphingoid base metabolism very often manifests with neurological symptoms, as sphingolipids are highly enriched in the nervous system, where they play important signaling and regulatory roles.
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Affiliation(s)
- Laura Goins
- Department of Physiology, University of Kentucky, Lexington, KY, USA
| | - Stefka Spassieva
- Department of Physiology, University of Kentucky, Lexington, KY, USA.
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Yin S, Liu X, Fan L, Hu H. Mechanisms of cell death induction by food-borne mycotoxins. Crit Rev Food Sci Nutr 2017; 58:1406-1417. [DOI: 10.1080/10408398.2016.1260526] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Shutao Yin
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Nutrition and Health, College of Food Science and Nutritional Engineering, China Agricultural University, National Engineering Research Center for Fruit and Vegetable Processing, Beijing, China, Haidian District, Beijing, China
| | - Xiaoyi Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Nutrition and Health, College of Food Science and Nutritional Engineering, China Agricultural University, National Engineering Research Center for Fruit and Vegetable Processing, Beijing, China, Haidian District, Beijing, China
| | - Lihong Fan
- College of Veterinary Medicine, China Agricultural University, Haidian District, Beijing, China
| | - Hongbo Hu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Nutrition and Health, College of Food Science and Nutritional Engineering, China Agricultural University, National Engineering Research Center for Fruit and Vegetable Processing, Beijing, China, Haidian District, Beijing, China
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10
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Zhang H, Zhang L, Diao X, Li N, Liu C. Toxicity of the mycotoxin fumonisin B 1 on the insect Sf9 cell line. Toxicon 2017; 129:20-27. [DOI: 10.1016/j.toxicon.2017.01.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2016] [Revised: 01/21/2017] [Accepted: 01/23/2017] [Indexed: 12/19/2022]
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Koutsouras GW, Ramos RL, Martinez LR. Role of microglia in fungal infections of the central nervous system. Virulence 2016; 8:705-718. [PMID: 27858519 DOI: 10.1080/21505594.2016.1261789] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Most fungi are capable of disseminating into the central nervous system (CNS) commonly being observed in immunocompromised hosts. Microglia play a critical role in responding to these infections regulating inflammatory processes proficient at controlling CNS colonization by these eukaryotic microorganisms. Nonetheless, it is this inflammatory state that paradoxically yields cerebral mycotic meningoencephalitis and abscess formation. As peripheral macrophages and fungi have been investigated aiding our understanding of peripheral disease, ascertaining the key interactions between fungi and microglia may uncover greater abilities to treat invasive fungal infections of the brain. Here, we present the current knowledge of microglial physiology. Due to the existing literature, we have described to greater extent the opportunistic mycotic interactions with these surveillance cells of the CNS, highlighting the need for greater efforts to study other cerebral fungal infections such as those caused by geographically restricted dimorphic and rare fungi.
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Affiliation(s)
- George W Koutsouras
- a Department of Biomedical Sciences , NYIT College of Osteopathic Medicine, New York Institute of Technology , Old Westbury , NY , USA
| | - Raddy L Ramos
- a Department of Biomedical Sciences , NYIT College of Osteopathic Medicine, New York Institute of Technology , Old Westbury , NY , USA
| | - Luis R Martinez
- a Department of Biomedical Sciences , NYIT College of Osteopathic Medicine, New York Institute of Technology , Old Westbury , NY , USA
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12
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Yamane M. Palmitoyl-ceramide accumulation with necrotic cell death in A549 cells, followed by a steep increase in sphinganine content. BIOCHIMIE OPEN 2015; 1:11-27. [PMID: 29632826 PMCID: PMC5889477 DOI: 10.1016/j.biopen.2015.06.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Accepted: 06/03/2015] [Indexed: 11/29/2022]
Abstract
Ceramides (Cers) have recently been identified as key signaling molecules that mediate biological functions such as cell growth, differentiation, senescence, apoptosis, and autophagy. However, the functions of Cer accumulation in necrotic cell death remain unknown. The aim of this study was to clarify the relationship between Cer accumulation with inhibition of the conversion pathway of Cer and concomitant necrotic cell death. In order to minimize the effect of apoptosis against necrotic cell death, A549 cells having the inhibiting effect of caspase 9 by survivin were used in this study. Consequently, Cer accumulation in A549 cells would likely be associated with a pathway other than the mitochondrial caspase-dependent pathway of apoptosis. Here, we showed that the dual addition of a glucosyl-Cer synthase inhibitor and a ceramidase inhibitor to A549 cell culture induced palmitoyl-Cer accumulation with Cer synthase 5 expression and necrotic cell death with lysosomal rupture together with leakage of cathepsin B/alkalization after 2–3 h, although it is unknown in this study whether the necrotic cell death was caused by the lysosomal rupture. This Cer accumulation was followed by a steep increase in sphinganine base levels via the activation of serine palmitoyltransferase activity brought about by the increase in palmitoyl-coenzyme A concentration as a substrate after 5–6 h. The increase in palmitoyl-coenzyme A concentration was achieved by activation of the fatty acid synthetic pathway from acetyl coenzyme A. Palmitoylceramide accumulation with necrosis is studied. The accumulation is with ceramide synthase 5 expression. The accumulation is followed by high sphinganine levels.
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Key Words
- ([13C16]C16:0-CoA, palmitoyl-13C16 coenzyme A
- 4-HPR, N-(4-hydroxyphenyl)retinamide
- A549 cells
- APCI, atmospheric pressure chemical ionization
- BSA, bovine serum albumin
- C16:0-Cer, palmitoyl-ceramide
- C16:0-CoA, palmitoyl-coenzyme A
- C2:0-CoA, acetyl-coenzyme A
- CHOP, CAAT/enhancer binding protein homologous protein
- CathB, cathepsin B
- Cer, ceramide
- CerS, ceramide synthase
- D-NMAPPD
- D-NMAPPD, N-[(1R,2R)-2-hydroxy-1-(hydroxy-methyl)-2-(4-nitrophenyl)ethyl]tetradecanamide
- DAPI, 4′,6-diamidino-2-phenylindole
- DL-PDMP
- DL-PDMP, DL-threo-1-phenyl-2-decanoylamino-3-morpholino-1-propanol
- DMEM, Dulbecco's modified Eagle's medium
- DMSO, dimethylsulfoxide
- DTT, dithiothreitol
- ER, endoplasmic reticulum
- ESI, electrospray ionization
- FATP1, fatty acid transport protein 1
- FBS, fetal bovine serum
- GlcCer, glucosylceramide
- IS, internal standard
- L-[2,3,3-D3]Ser, L-serine-2,3,3-D3
- LC3, microtubule-associated protein 1 light chain 3B
- LDH, lactate dehydrogenase
- LMP, lysosomal membrane permeabilization
- Lys, lysosomes
- MAM, mitochondria-associated membrane
- Myriocin, 2-amino-3,4-dihydroxy-2-(hydroxymethyl)-14-oxo-6-eicosenoic acid
- Necrosis
- Palmitoyl-ceramide
- SDS, sodium dodecyl sulfate
- SDS-PAGE, sodium dodecyl sulfate-polyacrylamide gel electrophoresis
- SIM, selected-ion monitoring
- SM, sphingomyelin
- SPT, serine palmitoyltransferase
- SPTLC, SPT-long chain base subunit
- Ser, Serine
- Sphinganine
- [1,2,3,4-13C4]C16:0 acid, palmitic acid-1,2,3,4-13C4
- [2-13C]C2:0 acid, sodium acetate-2-13C
- [D7]d18:0, D-erythro-sphinganine-D7
- [D7]d18:1, D-erythro-sphingosine-D7
- acridine orange, 3,6-Bis(dimethylamino) acridine hydrochloride
- d18:0, sphinganine
- d18:1, sphingosine
- d18:1-[D31]C16:0-Cer, N-palmitoyl [D31]-D-erythro-sphingosine
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Affiliation(s)
- Mototeru Yamane
- Department of Biochemistry, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-ku, Tokyo 160-0023, Japan
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Sousa FC, Schamber CR, Amorin SSS, Natali MRM. Effect of fumonisin-containing diet on the myenteric plexus of the jejunum in rats. Auton Neurosci 2014; 185:93-9. [PMID: 25183308 DOI: 10.1016/j.autneu.2014.08.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Revised: 08/10/2014] [Accepted: 08/11/2014] [Indexed: 10/24/2022]
Abstract
Fumonisins are mycotoxins that naturally occur as contaminants in grains that are destined for animal and human consumption. These mycotoxins cause hepatotoxic, nephrotoxic, carcinogenic, teratogenic, immunotoxic, and neurotoxic effects in different intensities based on dose, time of exposure, and animal species. In the present study, male Wistar rats were fed between postnatal days 21 and 63 with diets that contained fumonisins B1+B2 at concentrations of 1 and 3mg/kg. The objective of the present study was to evaluate the effects of fumonisins on food intake, growth, weight gain, serum activity of the alanine aminotransferase and aspartate aminotransferase enzymes, and quantitative and morphometric parameters of myenteric neurons in the jejunum that are immunoreactive to HuC/D protein and neuronal nitric oxide synthase enzyme (nNOS). Diets that contained fumonisins did not significantly alter food intake or body and blood parameters. We did not observe significant differences in the neuronal density and proportion of nitrergic neurons but found a significant reduction of cell body areas in both neuronal populations. This study is the first to report the effects of fumonisins in the enteric nervous system. The possible mechanisms by which fumonisins impair neuronal development and the use of the enteric nervous system as a tool for the study of the neurotoxic effects of fumonisins are discussed. In conclusion, fumonisin-containing food negatively affected the growth of myenteric neurons.
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Affiliation(s)
- Fernando Carlos Sousa
- Coordenação de Ciências Biológicas, Universidade Tecnológica Federal do Paraná, Câmpus Dois Vizinhos, Brazil.
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Razafimanjato H, Benzaria A, Taïeb N, Guo XJ, Vidal N, Di Scala C, Varini K, Maresca M. The ribotoxin deoxynivalenol affects the viability and functions of glial cells. Glia 2011; 59:1672-83. [PMID: 21748807 DOI: 10.1002/glia.21214] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2011] [Accepted: 06/16/2011] [Indexed: 11/08/2022]
Abstract
Glial cells are responsible for maintaining brain homeostasis. Modification of the viability and functions of glial cells, including astrocytes and microglia, are associated with neuronal death and neurological diseases. Many toxins (heavy metals, pesticides, bacterial or viral toxins) are known to impact on brain cell viability and functions. Although recent publications suggest a potential link between environmental exposure of humans to mycotoxins and neurological diseases, data regarding the effects of fungal toxins on brain cells are scarce. In the present study, we looked at the impact of deoxynivalenol (DON), a fungal ribotoxin, on glial cells from animal and human origin. We found that DON decreased the viability of glial cells with a higher toxicity against microglial cells compared with astrocytes. In addition to cellular toxicity, DON affected key functions of glial cells. Thus, DON caused a biphasic effect on the neuroinflammatory response of microglia to lipopolysaccharide (LPS), while sublethal doses of DON increased the LPS-induced secretion of TNF-α and nitric oxide, toxic doses inhibited it. In addition to affecting microglial functions, sublethal doses of DON also suppressed the uptake of L-glutamate by astrocytes. This inhibition was associated with a modification of the expression of the glutamate transporters at the plasma membrane. Our results suggest that environmental ribotoxins such as DON could, at low doses, cause modifications of brain homeostasis and possibly participate in the etiology of neurological diseases in which alterations of the glia are involved.
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Affiliation(s)
- Helisoa Razafimanjato
- CRN2M, CNRS UMR 6231, INRA USC 2027, University of Aix-Marseille 2 and Aix-Marseille 3, Faculté des Sciences de St-Jérôme, 13397 Marseille Cedex 20, France
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Bhuiyan MIH, Islam MN, Jung SY, Yoo HH, Lee YS, Jin C. Involvement of Ceramide in Ischemic Tolerance Induced by Preconditioning with Sublethal Oxygen-Glucose Deprivation in Primary Cultured Cortical Neurons of Rats. Biol Pharm Bull 2010; 33:11-7. [DOI: 10.1248/bpb.33.11] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Mohammad Iqbal Hossain Bhuiyan
- Doping Control Center, Research Coordination Division, Korea Institute of Science and Technology (KIST)
- Department of Biomolecular Science, University of Science and Technology (UST)
| | - Mohammad Nurul Islam
- Doping Control Center, Research Coordination Division, Korea Institute of Science and Technology (KIST)
| | - Seo Yun Jung
- Department of Pharmaceutical Sciences, College of Pharmacy and Department of Life and Nanopharmaceutical Science, Kyung Hee University
| | - Hye Hyun Yoo
- Doping Control Center, Research Coordination Division, Korea Institute of Science and Technology (KIST)
| | - Yong Sup Lee
- Department of Pharmaceutical Sciences, College of Pharmacy and Department of Life and Nanopharmaceutical Science, Kyung Hee University
| | - Changbae Jin
- Doping Control Center, Research Coordination Division, Korea Institute of Science and Technology (KIST)
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Meacham WD, Antoon JW, Burow ME, Struckhoff AP, Beckman BS. Sphingolipids as determinants of apoptosis and chemoresistance in the MCF-7 cell model system. Exp Biol Med (Maywood) 2009; 234:1253-63. [PMID: 19546354 DOI: 10.3181/0902-mr-77] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
An estimated 182,640 women and 1,990 men were diagnosed with breast cancer in 2008, and approximately 40,480 women and 450 men died from the disease. Thus, continued mechanistic studies are needed to understand the causes and develop additional therapeutics for this complicated disease. The MCF-7 cell system is one of the most recognized models for estrogen receptor (ER)-positive breast cancer and has generated approximately 13,000 publications cited in PubMed to date. A number of clues for biological mechanisms related to apoptotic/anti-apoptotic pathways and chemoresistance were elucidated and summarized in our previous review. The focus of this review is new knowledge of the central role of sphingolipid signaling in apoptotic mechanisms in estrogen receptor-positive breast cancer. The ultimate goal is to target crucial steps in survival signaling pathways that may ultimately provide additional translational solutions to the successful pharmacologic treatment of breast cancer.
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Affiliation(s)
- William D Meacham
- Department of Pharmacology, Tulane University School of Medicine, New Orleans, LA 70112, USA
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Stockmann-Juvala H, Savolainen K. A review of the toxic effects and mechanisms of action of fumonisin B1. Hum Exp Toxicol 2009; 27:799-809. [PMID: 19244287 DOI: 10.1177/0960327108099525] [Citation(s) in RCA: 202] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Fumonisin B(1) (FB(1)) is a mycotoxin produced by the fungus Fusarium verticillioides, which commonly infects corn and other agricultural products. Fusarium species can also be found in moisture-damaged buildings, and, therefore, exposure of humans to Fusarium mycotoxins including FB(1) may take place. FB(1) bears a clear structural similarity to the cellular sphingolipids, and this similarity has been shown to disturb the metabolism of sphingolipids by inhibiting the enzyme ceramide synthase leading to accumulation of sphinganine in cells and tissues. FB(1) is neurotoxic, hepatotoxic, and nephrotoxic in animals, and it has been classified as a possible carcinogen to humans. The cellular mechanisms behind FB(1)-induced toxicity include the induction of oxidative stress, apoptosis, and cytotoxicity, as well as alterations in cytokine expression. The effects of FB(1) on different parameters vary markedly depending on what types of cells are studied or what species they originate from. These aspects are important to consider when evaluating the toxic potential of FB(1).
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Affiliation(s)
- H Stockmann-Juvala
- Unit of Excellence for Immunotoxicology, Finnish Institute of Occupational Health, Helsinki, Finland.
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Marin DE, Gouze ME, Taranu I, Oswald IP. Fumonisin B1 alters cell cycle progression and interleukin-2 synthesis in swine peripheral blood mononuclear cells. Mol Nutr Food Res 2007; 51:1406-12. [DOI: 10.1002/mnfr.200700131] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Stockmann-Juvala H, Naarala J, Loikkanen J, Vähäkangas K, Savolainen K. Fumonisin B1-induced apoptosis in neuroblastoma, glioblastoma and hypothalamic cell lines. Toxicology 2006; 225:234-41. [PMID: 16860453 DOI: 10.1016/j.tox.2006.06.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2006] [Revised: 06/05/2006] [Accepted: 06/08/2006] [Indexed: 11/18/2022]
Abstract
Fumonisin B(1) (FB(1)) is a mycotoxin produced by Fusarium verticilliodes, which commonly infects corn across the world. Fusarium fungi may also be found in moisture-damaged buildings. In this study, we investigated the role of apoptosis in the toxicity of FB(1) in four different cell lines. Activation of caspase-3-like protease, DNA fragmentation and expression of p53 and Bcl-2 family proteins were studied in mouse GT1-7 hypothalamic, rat C6 glioblastoma, human U-118MG glioblastoma, and human SH-SY5Y neuroblastoma cells exposed to 0.1-100microM FB(1) for 0-144h. Caspase-3-like protease activity increased in all cell lines, except SH-SY5Y, at 48-144h, and internucleosomal DNA fragmentation occurred in all of the cell lines, pointing to a role for apoptosis in the toxicity of FB(1). However, the expressions of p53 or pro- or antiapoptotic Bcl-2 family proteins (Bax, Bcl-2, Bcl-X(L) and Mcl-1) were not affected in any of the cell lines even after prolonged exposure to FB(1) at high doses. The results of this study, together with the results of our previous studies, provide evidence that FB(1) is a potential neurotoxin, but that the toxicity of FB(1) varies between different cell lines. The sensitivity of these cell lines towards FB(1) is as follows: U-118MG>GT1-7>C6>SH-SY5Y cells. These results are consistent with the assumption that cells of glial origin may be more sensitive towards FB(1) than cells of neural origin.
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Affiliation(s)
- Helene Stockmann-Juvala
- Unit of Excellence for Immunotoxicology, Finnish Institute of Occupational Health, Topeliuksenkatu 41 a A, 00250 Helsinki, Finland.
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