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Kiss-Szemán AJ, Takács L, Orgován Z, Stráner P, Jákli I, Schlosser G, Masiulis S, Harmat V, Menyhárd DK, Perczel A. A carbapenem antibiotic inhibiting a mammalian serine protease: structure of the acylaminoacyl peptidase-meropenem complex. Chem Sci 2022; 13:14264-14276. [PMID: 36545146 PMCID: PMC9749117 DOI: 10.1039/d2sc05520a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 11/06/2022] [Indexed: 11/10/2022] Open
Abstract
The structure of porcine AAP (pAAP) in a covalently bound complex with meropenem was determined by cryo-EM to 2.1 Å resolution, showing the mammalian serine-protease inhibited by a carbapenem antibiotic. AAP is a modulator of the ubiquitin-proteasome degradation system and the site of a drug-drug interaction between the widely used antipsychotic, valproate and carbapenems. The active form of pAAP - a toroidal tetramer - binds four meropenem molecules covalently linked to the catalytic Ser587 of the serine-protease triad, in an acyl-enzyme state. AAP is hindered from fully processing the antibiotic by the displacement and protonation of His707 of the catalytic triad. We show that AAP is made susceptible to the association by its unusually sheltered active pockets and flexible catalytic triads, while the carbapenems possess sufficiently small substituents on their β-lactam rings to fit into the shallow substrate-specificity pocket of the enzyme.
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Affiliation(s)
- Anna J. Kiss-Szemán
- Laboratory of Structural Chemistry and Biology, Institute of Chemistry, Eötvös Loránd UniversityPázmány Péter sétány 1/ABudapestHungary
| | - Luca Takács
- Laboratory of Structural Chemistry and Biology, Institute of Chemistry, Eötvös Loránd UniversityPázmány Péter sétány 1/ABudapestHungary
| | - Zoltán Orgován
- Medicinal Chemistry Research Group, Research Centre for Natural SciencesBudapestHungary
| | - Pál Stráner
- ELKH-ELTE Protein Modelling Research Group, Eötvös Loránd Research NetworkBudapestHungary+36-1-372-2500/1653+36-1-372-2500/6547
| | - Imre Jákli
- Laboratory of Structural Chemistry and Biology, Institute of Chemistry, Eötvös Loránd UniversityPázmány Péter sétány 1/ABudapestHungary,ELKH-ELTE Protein Modelling Research Group, Eötvös Loránd Research NetworkBudapestHungary+36-1-372-2500/1653+36-1-372-2500/6547
| | - Gitta Schlosser
- ELKH-ELTE Lendület Ion Mobility Mass Spectrometry Research Group, Institute of Chemistry, Eötvös Loránd UniversityBudapestHungary
| | - Simonas Masiulis
- Materials and Structural Analysis Division, Thermo Fisher ScientificEindhovenThe Netherlands
| | - Veronika Harmat
- Laboratory of Structural Chemistry and Biology, Institute of Chemistry, Eötvös Loránd UniversityPázmány Péter sétány 1/ABudapestHungary,ELKH-ELTE Protein Modelling Research Group, Eötvös Loránd Research NetworkBudapestHungary+36-1-372-2500/1653+36-1-372-2500/6547
| | - Dóra K. Menyhárd
- Laboratory of Structural Chemistry and Biology, Institute of Chemistry, Eötvös Loránd UniversityPázmány Péter sétány 1/ABudapestHungary,ELKH-ELTE Protein Modelling Research Group, Eötvös Loránd Research NetworkBudapestHungary+36-1-372-2500/1653+36-1-372-2500/6547
| | - András Perczel
- Laboratory of Structural Chemistry and Biology, Institute of Chemistry, Eötvös Loránd UniversityPázmány Péter sétány 1/ABudapestHungary,ELKH-ELTE Protein Modelling Research Group, Eötvös Loránd Research NetworkBudapestHungary+36-1-372-2500/1653+36-1-372-2500/6547
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2
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Malci A, Lin X, Sandoval R, Gundelfinger ED, Naumann M, Seidenbecher CI, Herrera-Molina R. Ca 2+ signaling in postsynaptic neurons: Neuroplastin-65 regulates the interplay between plasma membrane Ca 2+ ATPases and ionotropic glutamate receptors. Cell Calcium 2022; 106:102623. [PMID: 35853264 DOI: 10.1016/j.ceca.2022.102623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 06/28/2022] [Accepted: 07/05/2022] [Indexed: 11/17/2022]
Abstract
Upon postsynaptic glutamate receptor activation, the cytosolic Ca2+ concentration rises and initiates signaling and plasticity in spines. The plasma membrane Ca2+ ATPase (PMCA) is a major player to limit the duration of cytosolic Ca2+ signals. It forms complexes with the glycoprotein neuroplastin (Np) isoforms Np55 and Np65 and functionally interplays with N-methyl-D-aspartate (NMDA)-type ionotropic glutamate receptors (iGluNRs). Moreover, binding of the Np65-specific extracellular domain to Ca2+-permeable GluA1-containing α-amino-3-hydroxy-5-methyl-4-isoxazole propionic acid (AMPA)-type ionotropic glutamate receptors (iGluA1Rs) was found to be required for long-term potentiation (LTP). However, the link between PMCA and iGluRs function to regulate cytosolic Ca2+ signals remained unclear. Here, we report that Np65 coordinates PMCA and iGluRs' functions to modulate the duration and amplitude of cytosolic Ca2+ transients in dendrites and spines of hippocampal neurons. Using live-cell Ca2+ imaging, acute pharmacological treatments, and GCaMP5G-expressing hippocampal neurons, we discovered that endogenous or Np65-promoted PMCA activity contributes to the restoration of basal Ca2+ levels and that this effect is dependent on iGluR activation. Super-resolution STED and confocal microscopy revealed that electrical stimulation increases the abundance of synaptic neuroplastin-PMCA complexes depending on iGluR activation and that low-rate overexpression of Np65 doubled PMCA levels and decreased cell surface levels of GluN2A and GluA1 in dendrites and Shank2-positive glutamatergic synapses. In neuroplastin-deficient hippocampi, we observed reduced PMCA and unchanged GluN2B levels, while GluN2A and GluA1 levels were imbalanced. Our electrophysiological data from hippocampal slices argues for an essential interplay of PMCA with GluN2A- but not with GluN2B-containing receptors upon induction of synaptic plasticity. Accordingly, we conclude that Np65 may interconnect PMCA with core players of glutamatergic neurotransmission to fine-tune the Ca2+ signal regulation in basal synaptic function and plasticity.
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Affiliation(s)
- Ayse Malci
- Leibniz Institute for Neurobiology, Magdeburg, Germany
| | - Xiao Lin
- Leibniz Institute for Neurobiology, Magdeburg, Germany
| | - Rodrigo Sandoval
- Departamento de Ciencias Biomédicas, Facultad de Medicina, Universidad Católica del Norte, Coquimbo, Chile
| | - Eckart D Gundelfinger
- Leibniz Institute for Neurobiology, Magdeburg, Germany; Center for Behavioral Brain Sciences, Magdeburg, Germany; Institute of Pharmacology and Toxicology, Medical Faculty, Otto von Guericke University, Magdeburg, Germany
| | - Michael Naumann
- Institute of Experimental Internal Medicine, Medical Faculty, Otto von Guericke University, Magdeburg, Germany
| | - Constanze I Seidenbecher
- Leibniz Institute for Neurobiology, Magdeburg, Germany; Center for Behavioral Brain Sciences, Magdeburg, Germany
| | - Rodrigo Herrera-Molina
- Center for Behavioral Brain Sciences, Magdeburg, Germany; Centro Integrativo de Biología y Química Aplicada, Universidad Bernardo O'Higgins, Santiago, Chile; Combinatorial Combinatorial NeuroImaging (CNI), Leibniz Institute for Neurobiology, Magdeburg, Germany.
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3
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Differential Distribution and Activity Profile of Acylpeptide Hydrolase in the Rat Seminiferous Epithelium. Biomedicines 2022; 10:biomedicines10071591. [PMID: 35884896 PMCID: PMC9312705 DOI: 10.3390/biomedicines10071591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 06/24/2022] [Accepted: 06/27/2022] [Indexed: 11/18/2022] Open
Abstract
Acylpeptide hydrolase (APEH) is a serine protease involved in amino acid recycling from acylated peptides (exopeptidase activity) and degradation of oxidized proteins (endoproteinase activity). This enzyme is inhibited by dichlorvos (DDVP), an organophosphate compound used as an insecticide. The role of APEH in spermatogenesis has not been established; therefore, the aim of this study was to characterize the distribution and activity profile of APEH during this process. For this purpose, cryosections of male reproductive tissues (testis and epididymis) and isolated cells (Sertoli cells, germ cells, and spermatozoa) were obtained from adult rats in order to analyze the intracellular localization of APEH by indirect immunofluorescence. In addition, the catalytic activity profiles of APEH in the different male reproductive tissues and isolated cells were quantified. Our results show that APEH is homogeneously distributed in Sertoli cells and early germ cells (spermatocytes and round spermatids), but this pattern changes during spermiogenesis. Specifically, in elongated spermatids and spermatozoa, APEH was localized in the acrosome and the principal piece. The exopeptidase activity was higher in the germ cell pool, compared to sperm and Sertoli cells, while the endoproteinase activity in epididymal homogenates was higher compared to testis homogenates at 24 h of incubation. In isolated cells, this activity was increased in Sertoli and germ cell pools, compared to spermatozoa. Taken together, these results indicate that APEH is differentially distributed in the testicular epithelium and undergoes re-localization during spermiogenesis. A possible role of APEH as a component of a protection system against oxidative stress and during sperm capacitation is discussed.
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Sandomenico A, Gogliettino M, Iaccarino E, Fusco C, Caporale A, Ruvo M, Palmieri G, Cocca E. Oxidized Substrates of APEH as a Tool to Study the Endoprotease Activity of the Enzyme. Int J Mol Sci 2021; 23:ijms23010443. [PMID: 35008880 PMCID: PMC8745263 DOI: 10.3390/ijms23010443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 12/24/2021] [Accepted: 12/28/2021] [Indexed: 11/30/2022] Open
Abstract
APEH is a ubiquitous and cytosolic serine protease belonging to the prolyl oligopeptidase (POP) family, playing a critical role in the processes of degradation of proteins through both exo- and endopeptidase events. Endopeptidase activity has been associated with protein oxidation; however, the actual mechanisms have yet to be elucidated. We show that a synthetic fragment of GDF11 spanning the region 48–64 acquires sensitivity to the endopeptidase activity of APEH only when the methionines are transformed into the corresponding sulphoxide derivatives. The data suggest that the presence of sulphoxide-modified methionines is an important prerequisite for the substrates to be processed by APEH and that the residue is crucial for switching the enzyme activity from exo- to endoprotease. The cleavage occurs on residues placed on the C-terminal side of Met(O), with an efficiency depending on the methionine adjacent residues, which thereby may play a crucial role in driving and modulating APEH endoprotease activity.
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Affiliation(s)
- Annamaria Sandomenico
- Institute of Biostructure and Bioimaging, National Research Council (CNR-IBB), 80134 Napoli, Italy; (A.S.); (E.I.); (A.C.)
| | - Marta Gogliettino
- Institute of Biosciences and BioResources, National Research Council (CNR-IBBR), 80131 Napoli, Italy; (M.G.); (C.F.); (E.C.)
| | - Emanuela Iaccarino
- Institute of Biostructure and Bioimaging, National Research Council (CNR-IBB), 80134 Napoli, Italy; (A.S.); (E.I.); (A.C.)
| | - Carmela Fusco
- Institute of Biosciences and BioResources, National Research Council (CNR-IBBR), 80131 Napoli, Italy; (M.G.); (C.F.); (E.C.)
- Department of Medicine and Health Sciences, University of Molise, 86100 Campobasso, Italy
| | - Andrea Caporale
- Institute of Biostructure and Bioimaging, National Research Council (CNR-IBB), 80134 Napoli, Italy; (A.S.); (E.I.); (A.C.)
| | - Menotti Ruvo
- Institute of Biostructure and Bioimaging, National Research Council (CNR-IBB), 80134 Napoli, Italy; (A.S.); (E.I.); (A.C.)
- Correspondence: (M.R.); (G.P.)
| | - Gianna Palmieri
- Institute of Biosciences and BioResources, National Research Council (CNR-IBBR), 80131 Napoli, Italy; (M.G.); (C.F.); (E.C.)
- Correspondence: (M.R.); (G.P.)
| | - Ennio Cocca
- Institute of Biosciences and BioResources, National Research Council (CNR-IBBR), 80131 Napoli, Italy; (M.G.); (C.F.); (E.C.)
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Lindsay A, Hickman D, Srinivasan M. A nuclear factor-kappa B inhibiting peptide suppresses innate immune receptors and gliosis in a transgenic mouse model of Alzheimer's disease. Biomed Pharmacother 2021; 138:111405. [PMID: 33756153 DOI: 10.1016/j.biopha.2021.111405] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 02/05/2021] [Accepted: 02/10/2021] [Indexed: 12/17/2022] Open
Abstract
A disproportionate increase in activated nuclear factor-kappa B (NF-κB) has been shown to drive the Aβ deposition, neuroinflammation and neurodegeneration in Alzheimer's disease (AD). Hence, selective targeting of activated p65 represents an attractive therapeutic approach for AD. Glucocorticoid induced leucine zipper (GILZ) is a NF-κB interactant that binds and sequesters the activated p65 in the cytoplasm. The p65 binding domain of GILZ adopts a polyproline type II helical conformation, a motif that acts as an adaptable glove in the interface with the binding partner and constitutes an excellent template for drug design. Previously, peptide analogs of the p65 binding domain of GILZ, referred to as GA have been shown to suppress pathology in the lipopolysaccharide induced model of neuroinflammation. In this study, we investigated the CNS delivery of labeled GA administered intraperitoneally in adult mice for a period of upto 24 h. Further, we evaluated the suppressive potential of GA in 5xFAD mice, an aggressive model with five genetic mutations closely associated with human AD. Groups of 5xFAD mice administered GA or control peptide intraperitoneally on alternate days for six weeks were evaluated for Aβ deposition, microglia, inflammation and innate immune responses by immunohistochemistry and real time polymerase reaction. GA was observed in proximity with NeuN positive neurons suggesting that the compound crossed the blood brain barrier to reach the brain parenchyma. Further, GA treatment decreased Aβ load, reduced Iba1 + microglia and glial fibrillary acidic protein (GFAP)+ astrocytes, inhibited inflammatory cytokines and suppressed toll like receptor (TLR-2, TLR-4) expressions in 5xFAD mice.
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Affiliation(s)
- Alison Lindsay
- Department of Oral Pathology, Medicine and Radiology, Indiana University School of Dentistry, United States
| | - Deborah Hickman
- Laboratory of Animal Care and Research, Indiana University School of Medicine, Indiana University-Purdue University Indianapolis, United States
| | - Mythily Srinivasan
- Department of Oral Pathology, Medicine and Radiology, Indiana University School of Dentistry, United States; Provaidya LLC, Indianapolis, IN, United States.
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Walczak M, Chryplewicz A, Olewińska S, Psurski M, Winiarski Ł, Torzyk K, Oleksyszyn J, Sieńczyk M. Phosphonic Analogs of Alanine as Acylpeptide Hydrolase Inhibitors. Chem Biodivers 2021; 18:e2001004. [PMID: 33427376 DOI: 10.1002/cbdv.202001004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 01/08/2021] [Indexed: 11/12/2022]
Abstract
Acylpeptide hydrolase is a serine protease, which, together with prolyl oligopeptidase, dipeptidyl peptidase IV and oligopeptidase B, belongs to the prolyl oligopeptidase family. Its primary function is associated with the removal of N-acetylated amino acid residues from proteins and peptides. Although the N-acylation occurs in 50-90 % of eukaryotic proteins, the precise functions of this modification remains unclear. Recent findings have indicated that acylpeptide hydrolase participates in various events including oxidized proteins degradation, amyloid β-peptide cleavage, and response to DNA damage. Considering the protein degradation cycle cross-talk between acylpeptide hydrolase and proteasome, inhibition of the first enzyme resulted in down-regulation of the ubiquitin-proteasome system and induction of cancer cell apoptosis. Acylpeptide hydrolase has been proposed as an interesting target for the development of new potential anticancer agents. Here, we present the synthesis of simple derivatives of (1-aminoethyl)phosphonic acid diaryl esters, phosphonic analogs of alanine diversified at the N-terminus and ester rings, as inhibitors of acylpeptide hydrolase and discuss the ability of the title compounds to induce apoptosis of U937 and MV-4-11 tumor cell lines.
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Affiliation(s)
- Maciej Walczak
- Wroclaw University of Science and Technology, Department of Organic and Medicinal Chemistry, Faculty of Chemistry, Wybrzeze Wyspianskiego 27, 50-370, Wroclaw, Poland
| | - Agnieszka Chryplewicz
- Wroclaw University of Science and Technology, Department of Organic and Medicinal Chemistry, Faculty of Chemistry, Wybrzeze Wyspianskiego 27, 50-370, Wroclaw, Poland
| | - Sandra Olewińska
- Wroclaw University of Science and Technology, Department of Organic and Medicinal Chemistry, Faculty of Chemistry, Wybrzeze Wyspianskiego 27, 50-370, Wroclaw, Poland
| | - Mateusz Psurski
- Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114, Wroclaw, Poland
| | - Łukasz Winiarski
- Wroclaw University of Science and Technology, Department of Organic and Medicinal Chemistry, Faculty of Chemistry, Wybrzeze Wyspianskiego 27, 50-370, Wroclaw, Poland
| | - Karolina Torzyk
- Wroclaw University of Science and Technology, Department of Organic and Medicinal Chemistry, Faculty of Chemistry, Wybrzeze Wyspianskiego 27, 50-370, Wroclaw, Poland
| | - Józef Oleksyszyn
- Wroclaw University of Science and Technology, Department of Organic and Medicinal Chemistry, Faculty of Chemistry, Wybrzeze Wyspianskiego 27, 50-370, Wroclaw, Poland
| | - Marcin Sieńczyk
- Wroclaw University of Science and Technology, Department of Organic and Medicinal Chemistry, Faculty of Chemistry, Wybrzeze Wyspianskiego 27, 50-370, Wroclaw, Poland
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Self- assembled lactoferrin-conjugated linoleic acid micelles as an orally active targeted nanoplatform for Alzheimer's disease. Int J Biol Macromol 2020; 162:246-261. [DOI: 10.1016/j.ijbiomac.2020.06.058] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Revised: 04/22/2020] [Accepted: 06/07/2020] [Indexed: 12/29/2022]
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8
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Li Z, Gong X, Li D, Yang X, Shi Q, Ju X. Intratracheal Transplantation of Amnion-Derived Mesenchymal Stem Cells Ameliorates Hyperoxia-Induced Neonatal Hyperoxic Lung Injury via Aminoacyl-Peptide Hydrolase. Int J Stem Cells 2020; 13:221-236. [PMID: 32323511 PMCID: PMC7378897 DOI: 10.15283/ijsc19110] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 03/02/2020] [Accepted: 03/30/2020] [Indexed: 12/20/2022] Open
Abstract
Background and Objectives Bronchopulmonary dysplasia (BPD) has major effects in premature infants. Although previous literature has indicated that mesenchymal stem cells (MSCs) can alleviate lung pathology in BPD newborns and improve the survival rate, few research have been done investigating significantly differentially expressed genes in the lungs before and after MSCs therapy. The aim of this study is to identify differentially expressed genes in lung tissues before and after hAD-MSC treatment. Methods and Results Human amnion-derived MSCs (hAD-MSCs) were cultured and met the MSCs criteria for cell phenotype and multidirectional differentiation. Then we confirmed the size of hAD-MSCs-EXOs and their expressed markers. An intratracheal drip of living cells showed the strongest effect on NHLI compared to cellular secretions or exosomes, both in terms of ameliorating pulmonary edema and reducing inflammatory cell infiltration. Through gene chip hybridization, PCR, and western blotting, acylaminoacyl-peptide hydrolase (APEH) expression was found to be significantly decreased under hyperoxia, and significantly increased after hAD-MSC treatment. Conclusions The intratracheal transplantation of hAD-MSCs ameliorated NHLI in neonatal rats through APEH.
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Affiliation(s)
- Zhenghao Li
- Department of Pediatrics, Qilu Hospital of Shandong University, Ji'nan, China.,Department of Pediatrics, Yidu Central Hospital of Weifang, Qingzhou, China
| | - Xiangcui Gong
- Department of Pediatrics, Qingdao Women and Children's Hospital, Qingdao, China
| | - Dong Li
- Stem Cell and Regenerative Medicine Research Center of Shandong University, Ji'nan, China
| | - Xiaofei Yang
- Department of Pediatrics, Yidu Central Hospital of Weifang, Qingzhou, China
| | - Qing Shi
- Stem Cell and Regenerative Medicine Research Center of Shandong University, Ji'nan, China
| | - Xiuli Ju
- Department of Pediatrics, Qilu Hospital of Shandong University, Ji'nan, China.,Stem Cell and Regenerative Medicine Research Center of Shandong University, Ji'nan, China
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9
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Ramírez-Santana M, Zúñiga-Venegas L, Corral S, Roeleveld N, Groenewoud H, Van der Velden K, Scheepers PTJ, Pancetti F. Reduced neurobehavioral functioning in agricultural workers and rural inhabitants exposed to pesticides in northern Chile and its association with blood biomarkers inhibition. Environ Health 2020; 19:84. [PMID: 32698901 PMCID: PMC7374955 DOI: 10.1186/s12940-020-00634-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 07/03/2020] [Indexed: 05/16/2023]
Abstract
BACKGROUND Previous biomonitoring studies have shown that people in the rural population of Coquimbo, the major agricultural area in northern Chile are being occupationally and environmentally exposed to organophosphate/carbamate (OP/CB) pesticides. Given their harmful effects, this study had two aims; first, to evaluate the effect of cumulative or chronic exposure to OP/CB pesticides on the neurobehavioral performance of agricultural workers and rural inhabitants; second, to determine if changes in the neurobehavioral performance are associated to changes in blood biomarkers of OP/CB pesticides during the spray season, when exposure is higher. METHODS For the first aim, a cross sectional study of neurobehavioral performance in adult volunteers (men and women, 18-50 years-old, right-handed) was carried out in the pre-spray season. Sampling was done by convenience and a questionnaire was used to categorize participants depending on their level of chronic exposure, as either: occupationally exposed (OE, n = 87), environmentally exposed (EE, n = 81), or non-exposed controls or reference group (RG, n = 100). A neurobehavioral test battery consisting of 21 tests to measure cognitive, motor and emotional state was applied. For the second aim, neurobehavioral measures were taken a second time from EE and OE groups during the spray season, and their exposure corroborated by blood-based biomarker inhibition. RESULTS Lower neurobehavioral performance was observed in the pre-spray evaluation of EE and OE groups compared to the non-exposed, OE being the worst performing group. Seasonal exposure impaired performance in both exposure groups on all tests except those on attention and mood. Data modeling of the basal (pre-spray) measurements showed that the level of exposure was the best predictor of performance. During spraying, inhibition of BChE activity in the EE group was the best predictor of low performance in tests measuring logical, auditory and visual memory, inhibitory control of cognitive interference, constructional and planning abilities, executive functions, and motor speed and coordination. CONCLUSION Long-term occupational or environmental exposure to pesticides caused impairment in neurobehavioral functioning, which worsened during the spraying season, mainly in EE. BChE inhibition was the best predictor for seasonal neurobehavioral changes in EE.
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Affiliation(s)
- Muriel Ramírez-Santana
- Departemento de Salud Pública, Facultad de Medicina, Universidad Católica del Norte, Coquimbo, Chile
- Radboud university medical center, Nijmegen, The Netherlands
- Department for Health Evidence, Radboud Institute for Health Sciences, Radboud university medical center, Nijmegen, The Netherlands
| | - Liliana Zúñiga-Venegas
- Centro de Investigaciones y Estudios Avanzados de Maule (CIEAM), Universidad Católica del Maule, Talca, Chile
- Centro de Investigación en Neuropsicología y Neurociencias Cognitivas (CINPSI), Universidad Católica del Maule, Talca, Chile
- Laboratorio de Neurotoxicología Ambiental, Facultad de Medicina, Universidad Católica del Norte, Larrondo 1281, 1780000, Coquimbo, Chile
| | - Sebastián Corral
- Laboratorio de Neurotoxicología Ambiental, Facultad de Medicina, Universidad Católica del Norte, Larrondo 1281, 1780000, Coquimbo, Chile
- Laboratorio de Psiquiatría Translacional, Departamento de Psiquiatría y Salud Mental, Facultad de Medicina, Universidad de Chile, Santiago, Chile
- Escuela de Psicología, Facultad de Ciencias Sociales, Universidad Central de Chile, Santiago, Chile
| | - Nel Roeleveld
- Department for Health Evidence, Radboud Institute for Health Sciences, Radboud university medical center, Nijmegen, The Netherlands
| | - Hans Groenewoud
- Department for Health Evidence, Radboud Institute for Health Sciences, Radboud university medical center, Nijmegen, The Netherlands
| | - Koos Van der Velden
- Department of Primary and Community Care, Radboud university medical center, Nijmegen, The Netherlands
| | - Paul T J Scheepers
- Department for Health Evidence, Radboud Institute for Health Sciences, Radboud university medical center, Nijmegen, The Netherlands
| | - Floria Pancetti
- Laboratorio de Neurotoxicología Ambiental, Facultad de Medicina, Universidad Católica del Norte, Larrondo 1281, 1780000, Coquimbo, Chile.
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10
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Canet G, Pineau F, Zussy C, Hernandez C, Hunt H, Chevallier N, Perrier V, Torrent J, Belanoff JK, Meijer OC, Desrumaux C, Givalois L. Glucocorticoid receptors signaling impairment potentiates amyloid-β oligomers-induced pathology in an acute model of Alzheimer's disease. FASEB J 2019; 34:1150-1168. [PMID: 31914623 DOI: 10.1096/fj.201900723rrr] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 11/05/2019] [Accepted: 11/07/2019] [Indexed: 02/01/2023]
Abstract
Dysregulation of the hypothalamic-pituitary-adrenal (HPA) axis occurs early in Alzheimer's disease (AD), associated with elevated circulating glucocorticoids (GC) and glucocorticoid receptors (GR) signaling impairment. However, the precise role of GR in the pathophysiology of AD remains unclear. Using an acute model of AD induced by the intracerebroventricular injection of amyloid-β oligomers (oAβ), we analyzed cellular and behavioral hallmarks of AD, GR signaling pathways, processing of amyloid precursor protein, and enzymes involved in Tau phosphorylation. We focused on the prefrontal cortex (PFC), particularly rich in GR, early altered in AD and involved in HPA axis control and cognitive functions. We found that oAβ impaired cognitive and emotional behaviors, increased plasma GC levels, synaptic deficits, apoptosis and neuroinflammatory processes. Moreover, oAβ potentiated the amyloidogenic pathway and enzymes involved both in Tau hyperphosphorylation and GR activation. Treatment with a selective GR modulator (sGRm) normalized plasma GC levels and all behavioral and biochemical parameters analyzed. GR seems to occupy a central position in the pathophysiology of AD. Deregulation of the HPA axis and a feed-forward effect on PFC GR sensitivity could participate in the etiology of AD, in perturbing Aβ and Tau homeostasis. These results also reinforce the therapeutic potential of sGRm in AD.
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Affiliation(s)
- Geoffrey Canet
- Molecular Mechanisms in Neurodegenerative Dementia (MMDN) Laboratory, INSERM U1198, Team Environmental Impact in Alzheimer's Disease and Related Disorders (EiAlz), Montpellier, France.,University of Montpellier, Montpellier, France.,EPHE, Paris, France
| | - Fanny Pineau
- Molecular Mechanisms in Neurodegenerative Dementia (MMDN) Laboratory, INSERM U1198, Team Environmental Impact in Alzheimer's Disease and Related Disorders (EiAlz), Montpellier, France.,University of Montpellier, Montpellier, France.,EPHE, Paris, France
| | - Charleine Zussy
- Molecular Mechanisms in Neurodegenerative Dementia (MMDN) Laboratory, INSERM U1198, Team Environmental Impact in Alzheimer's Disease and Related Disorders (EiAlz), Montpellier, France.,University of Montpellier, Montpellier, France.,EPHE, Paris, France
| | - Célia Hernandez
- Molecular Mechanisms in Neurodegenerative Dementia (MMDN) Laboratory, INSERM U1198, Team Environmental Impact in Alzheimer's Disease and Related Disorders (EiAlz), Montpellier, France.,University of Montpellier, Montpellier, France.,EPHE, Paris, France
| | - Hazel Hunt
- Corcept Therapeutics, Menlo Park, CA, USA
| | - Nathalie Chevallier
- Molecular Mechanisms in Neurodegenerative Dementia (MMDN) Laboratory, INSERM U1198, Team Environmental Impact in Alzheimer's Disease and Related Disorders (EiAlz), Montpellier, France.,University of Montpellier, Montpellier, France.,EPHE, Paris, France
| | - Véronique Perrier
- Molecular Mechanisms in Neurodegenerative Dementia (MMDN) Laboratory, INSERM U1198, Team Environmental Impact in Alzheimer's Disease and Related Disorders (EiAlz), Montpellier, France.,University of Montpellier, Montpellier, France.,EPHE, Paris, France
| | - Joan Torrent
- Molecular Mechanisms in Neurodegenerative Dementia (MMDN) Laboratory, INSERM U1198, Team Environmental Impact in Alzheimer's Disease and Related Disorders (EiAlz), Montpellier, France.,University of Montpellier, Montpellier, France.,EPHE, Paris, France
| | | | - Onno C Meijer
- Einthoven Laboratory, Department of Medicine, Division of Endocrinology, Leiden University Medical Center, Leiden, The Netherlands
| | - Catherine Desrumaux
- Molecular Mechanisms in Neurodegenerative Dementia (MMDN) Laboratory, INSERM U1198, Team Environmental Impact in Alzheimer's Disease and Related Disorders (EiAlz), Montpellier, France.,University of Montpellier, Montpellier, France.,EPHE, Paris, France
| | - Laurent Givalois
- Molecular Mechanisms in Neurodegenerative Dementia (MMDN) Laboratory, INSERM U1198, Team Environmental Impact in Alzheimer's Disease and Related Disorders (EiAlz), Montpellier, France.,University of Montpellier, Montpellier, France.,EPHE, Paris, France
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11
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Ramírez-Santana M, Farías-Gómez C, Zúñiga-Venegas L, Sandoval R, Roeleveld N, Van der Velden K, Scheepers PTJ, Pancetti F. Biomonitoring of blood cholinesterases and acylpeptide hydrolase activities in rural inhabitants exposed to pesticides in the Coquimbo Region of Chile. PLoS One 2018; 13:e0196084. [PMID: 29718943 PMCID: PMC5931667 DOI: 10.1371/journal.pone.0196084] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 04/05/2018] [Indexed: 11/18/2022] Open
Abstract
In Chile, agriculture is a relevant economic activity and is concomitant with the use of pesticides to improve the yields. Acute intoxications of agricultural workers occur with some frequency and they must be reported to the surveillance system of the Ministry of Health. However the impacts of chronic and environmental pesticide exposure have been less studied. Among pesticides frequently used in Chile for insects control are organophosphates (OP) and carbamates (CB). They are inhibitors of acetylcholinesterase (AChE) and butyrylcholinesterase (BChE). In this study we determined the pattern of both biomarkers activity in three populations with different type of chronic exposure to OP/CB: environmentally exposed (EE), occupationally exposed (OE) and a reference group (RG) without exposure. Besides this, we also measured the activity of acylpeptide hydrolase (APEH), an enzyme involved in relevant functions in the central synapses that is also expressed in erythrocytes and previously reported to be highly inhibited by some OP. A baseline measurement was done in both exposure groups and then a second measurement was done during the spraying season. The RG was measured only once at any time of the year. Our results indicate that people under chronic OP/CB exposure showed an adaptive response through an increase of basal BChE activity. During the spray season only BChE activity was decreased in the EE and OE groups (p<0.05 and p<0.01, respectively) and the higher magnitude of BChE inhibition was observed in the EE group. The analysis of the frequencies of inhibition above 30% (biological tolerance limit declared by Chilean legislation) indicated that BChE was most frequently inhibited in the EE group (53% of the individuals displayed inhibition) and AChE in the OE group (55% of the individuals displayed AChE inhibition). APEH activity showed the highest frequency of inhibition in the EE group independent of its magnitude (64%). Our results demonstrate that the rural population living nearby agricultural settings displays high levels of environmental exposure. APEH activity seems to be a sensitive biomarker for acute low-level exposure and its usefulness as a routine biomarker must to be explored in future studies. Systematic biomonitoring and health outcomes studies are necessary as well as obtaining the baseline for BChE and AChE activity levels with the aim to improve environmental and occupational health policies in Chile.
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Affiliation(s)
- Muriel Ramírez-Santana
- Department of Public Health, Faculty of Medicine, Universidad Católica del Norte, Coquimbo, Chile
- Department of Primary and Community Care, Radboud university medical center, Nijmegen, The Netherlands
| | - Cristián Farías-Gómez
- Laboratory of Environmental Neurotoxicology, Faculty of Medicine, Universidad Católica del Norte, Coquimbo, Chile
| | - Liliana Zúñiga-Venegas
- Laboratory of Biomedical Research, Faculty of Medicine, Universidad Católica del Maule, Talca, Chile
| | - Rodrigo Sandoval
- Laboratory of Environmental Neurotoxicology, Faculty of Medicine, Universidad Católica del Norte, Coquimbo, Chile
| | - Nel Roeleveld
- Radboud Institute for Health Sciences, Radboud university medical center, Nijmegen, The Netherlands
| | - Koos Van der Velden
- Department of Primary and Community Care, Radboud university medical center, Nijmegen, The Netherlands
| | - Paul T. J. Scheepers
- Radboud Institute for Health Sciences, Radboud university medical center, Nijmegen, The Netherlands
| | - Floria Pancetti
- Laboratory of Environmental Neurotoxicology, Faculty of Medicine, Universidad Católica del Norte, Coquimbo, Chile
- * E-mail:
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