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Tulen CBM, Duistermaat E, Cremers JWJM, Klerx WNM, Fokkens PHB, Weibolt N, Kloosterboer N, Dentener MA, Gremmer ER, Jessen PJJ, Koene EJC, Maas L, Opperhuizen A, van Schooten FJ, Staal YCM, Remels AHV. Smoking-Associated Exposure of Human Primary Bronchial Epithelial Cells to Aldehydes: Impact on Molecular Mechanisms Controlling Mitochondrial Content and Function. Cells 2022; 11:3481. [PMID: 36359877 PMCID: PMC9655975 DOI: 10.3390/cells11213481] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 10/27/2022] [Accepted: 10/28/2022] [Indexed: 09/21/2023] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a devastating lung disease primarily caused by exposure to cigarette smoke (CS). During the pyrolysis and combustion of tobacco, reactive aldehydes such as acetaldehyde, acrolein, and formaldehyde are formed, which are known to be involved in respiratory toxicity. Although CS-induced mitochondrial dysfunction has been implicated in the pathophysiology of COPD, the role of aldehydes therein is incompletely understood. To investigate this, we used a physiologically relevant in vitro exposure model of differentiated human primary bronchial epithelial cells (PBEC) exposed to CS (one cigarette) or a mixture of acetaldehyde, acrolein, and formaldehyde (at relevant concentrations of one cigarette) or air, in a continuous flow system using a puff-like exposure protocol. Exposure of PBEC to CS resulted in elevated IL-8 cytokine and mRNA levels, increased abundance of constituents associated with autophagy, decreased protein levels of molecules associated with the mitophagy machinery, and alterations in the abundance of regulators of mitochondrial biogenesis. Furthermore, decreased transcript levels of basal epithelial cell marker KRT5 were reported after CS exposure. Only parts of these changes were replicated in PBEC upon exposure to a combination of acetaldehyde, acrolein, and formaldehyde. More specifically, aldehydes decreased MAP1LC3A mRNA (autophagy) and BNIP3 protein (mitophagy) and increased ESRRA protein (mitochondrial biogenesis). These data suggest that other compounds in addition to aldehydes in CS contribute to CS-induced dysregulation of constituents controlling mitochondrial content and function in airway epithelial cells.
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Affiliation(s)
- Christy B. M. Tulen
- School of Nutrition and Translational Research in Metabolism (NUTRIM), Department of Pharmacology and Toxicology, Maastricht University Medical Center+, 6200 MD Maastricht, The Netherlands
| | - Evert Duistermaat
- National Institute for Public Health and the Environment (RIVM), 3721 MA Bilthoven, The Netherlands
| | | | - Walther N. M. Klerx
- National Institute for Public Health and the Environment (RIVM), 3721 MA Bilthoven, The Netherlands
| | - Paul H. B. Fokkens
- National Institute for Public Health and the Environment (RIVM), 3721 MA Bilthoven, The Netherlands
| | - Naömi Weibolt
- National Institute for Public Health and the Environment (RIVM), 3721 MA Bilthoven, The Netherlands
| | - Nico Kloosterboer
- Department of Pediatrics, Maastricht University Medical Center+, 6229 HX Maastricht, The Netherlands
- Primary Lung Culture (PLUC) Facility, Maastricht University Medical Center+, 6200 MD Maastricht, The Netherlands
| | - Mieke A. Dentener
- Primary Lung Culture (PLUC) Facility, Maastricht University Medical Center+, 6200 MD Maastricht, The Netherlands
- School of Nutrition and Translational Research in Metabolism (NUTRIM), Department of Respiratory Medicine, Maastricht University Medical Center+, 6200 MD Maastricht, The Netherlands
| | - Eric R. Gremmer
- National Institute for Public Health and the Environment (RIVM), 3721 MA Bilthoven, The Netherlands
| | - Phyllis J. J. Jessen
- School of Nutrition and Translational Research in Metabolism (NUTRIM), Department of Pharmacology and Toxicology, Maastricht University Medical Center+, 6200 MD Maastricht, The Netherlands
| | - Evi J. C. Koene
- School of Nutrition and Translational Research in Metabolism (NUTRIM), Department of Pharmacology and Toxicology, Maastricht University Medical Center+, 6200 MD Maastricht, The Netherlands
| | - Lou Maas
- School of Nutrition and Translational Research in Metabolism (NUTRIM), Department of Pharmacology and Toxicology, Maastricht University Medical Center+, 6200 MD Maastricht, The Netherlands
| | - Antoon Opperhuizen
- School of Nutrition and Translational Research in Metabolism (NUTRIM), Department of Pharmacology and Toxicology, Maastricht University Medical Center+, 6200 MD Maastricht, The Netherlands
- Office of Risk Assessment and Research, Netherlands Food and Consumer Product Safety Authority (NVWA), 3511 GG Utrecht, The Netherlands
| | - Frederik-Jan van Schooten
- School of Nutrition and Translational Research in Metabolism (NUTRIM), Department of Pharmacology and Toxicology, Maastricht University Medical Center+, 6200 MD Maastricht, The Netherlands
| | - Yvonne C. M. Staal
- National Institute for Public Health and the Environment (RIVM), 3721 MA Bilthoven, The Netherlands
| | - Alexander H. V. Remels
- School of Nutrition and Translational Research in Metabolism (NUTRIM), Department of Pharmacology and Toxicology, Maastricht University Medical Center+, 6200 MD Maastricht, The Netherlands
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Engel M, Nowacki RME, Jonker EM, Ophelders D, Nikiforou M, Kloosterboer N, Zimmermann LJI, van Waardenburg DA, Kramer BW. A comparison of four different models of acute respiratory distress syndrome in sheep. Respir Res 2020; 21:209. [PMID: 32771010 PMCID: PMC7414721 DOI: 10.1186/s12931-020-01475-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Accepted: 07/28/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Acute respiratory distress syndrome (ARDS) can have various causes. The study objective was to investigate whether different pathophysiologic models of ARDS would show different respiratory, cardiovascular and inflammatory outcomes. METHODS We performed a prospective, randomized study in 27 ventilated ewes inducing ARDS using three different techniques to mimic the pulmonary causes of ARDS (ARDSp): warm saline lavage (n = 6), intratracheal hydrochloric acid (HCl; n = 6), intratracheal albumin (n = 10), and one technique to mimic an extrapulmonary cause of ARDS (ARDSexp): intravenous lipopolysaccharide (LPS iv; n = 5). ARDS was defined when PaO2 was < 15 kPa (112 mmHg) when ventilated with PEEP 10 cm H2O and FiO2 = 1.0. The effects on gas exchange were investigated by calculating the oxygenation index (OI) and the ventilation efficacy index (VEI) every 30 min for a period of 4 h. Post mortem lung lavage was performed to obtain broncho-alveolar lavage fluid (BALF) to assess lung injury and inflammation. Lung injury and inflammation were assessed by measuring the total number and differentiation of leukocytes, the concentration of protein and disaturated phospholipids, and interleukine-6 and -8 in the BALF. Histology of the lung was evaluated by measuring the mean alveolar size, alveolar wall thickness and the lung injury score system by Matute-Bello et al., as markers of lung injury. The concentration of interleukin-6 was determined in plasma, as a marker of systematic inflammation. RESULTS The OI and VEI were most affected in the LPS iv group and thereafter the HCl group, after meeting the ARDS criteria. Diastolic blood pressure was lowest in the LPS iv group. There were no significant differences found in the total number and differentiation of leukocytes, the concentration of protein and disaturated phospholipids, or interleukin-8 in the BALF, histology of the lung and the lung injury score. IL-6 in BALF and plasma was highest in the LPS iv group, but no significant differences were found between the other groups. It took a significantly longer period of time to meet the ARDS criteria in the LPS iv group. CONCLUSIONS The LPS model caused the most severe pulmonary and cardiovascular insufficiency. Surprisingly, there were limited significant differences in lung injury and inflammatory markers, despite the different pathophysiological models, when the clinical definition of ARDS was applied.
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Affiliation(s)
- Monique Engel
- Department of Pediatrics, School for Oncology and Developmental Biology - GROW, Maastricht University Medical Centre (MUMC+), P. Debyelaan 25, PO Box 5800, NL-6202, AZ, Maastricht, The Netherlands.
| | - Relana M E Nowacki
- Department of Pediatrics, School for Oncology and Developmental Biology - GROW, Maastricht University Medical Centre (MUMC+), P. Debyelaan 25, PO Box 5800, NL-6202, AZ, Maastricht, The Netherlands
| | - Elly M Jonker
- Department of Pediatrics, School for Oncology and Developmental Biology - GROW, Maastricht University Medical Centre (MUMC+), P. Debyelaan 25, PO Box 5800, NL-6202, AZ, Maastricht, The Netherlands
| | - Daan Ophelders
- Department of Pediatrics, School for Oncology and Developmental Biology - GROW, Maastricht University Medical Centre (MUMC+), P. Debyelaan 25, PO Box 5800, NL-6202, AZ, Maastricht, The Netherlands
| | - Maria Nikiforou
- Department of Pediatrics, School for Oncology and Developmental Biology - GROW, Maastricht University Medical Centre (MUMC+), P. Debyelaan 25, PO Box 5800, NL-6202, AZ, Maastricht, The Netherlands
| | - Nico Kloosterboer
- Department of Pediatrics, School for Oncology and Developmental Biology - GROW, Maastricht University Medical Centre (MUMC+), P. Debyelaan 25, PO Box 5800, NL-6202, AZ, Maastricht, The Netherlands
| | - Luc J I Zimmermann
- Department of Pediatrics, School for Oncology and Developmental Biology - GROW, Maastricht University Medical Centre (MUMC+), P. Debyelaan 25, PO Box 5800, NL-6202, AZ, Maastricht, The Netherlands
| | - Dick A van Waardenburg
- Department of Pediatrics, School of Nutrition and Translational Research in Metabolism - NUTRIM, Maastricht University Medical Centre (MUMC+), Maastricht, The Netherlands
| | - Boris W Kramer
- Department of Pediatrics, School for Oncology and Developmental Biology - GROW, Maastricht University Medical Centre (MUMC+), P. Debyelaan 25, PO Box 5800, NL-6202, AZ, Maastricht, The Netherlands
- Department of Pediatrics, School of Mental Health and Neuroscience, Maastricht University Medical Centre (MUMC+), Maastricht, The Netherlands
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3
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van Gorp C, de Lange IH, Spiller OB, Dewez F, Cillero Pastor B, Heeren RMA, Kessels L, Kloosterboer N, van Gemert WG, Beeton ML, Stock SJ, Jobe AH, Payne MS, Kemp MW, Zimmermann LJ, Kramer BW, Plat J, Wolfs TGAM. Protection of the Ovine Fetal Gut against Ureaplasma-Induced Chorioamnionitis: A Potential Role for Plant Sterols. Nutrients 2019; 11:E968. [PMID: 31035616 PMCID: PMC6566982 DOI: 10.3390/nu11050968] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 04/23/2019] [Accepted: 04/25/2019] [Indexed: 01/29/2023] Open
Abstract
Chorioamnionitis, clinically most frequently associated with Ureaplasma, is linked to intestinal inflammation and subsequent gut injury. No treatment is available to prevent chorioamnionitis-driven adverse intestinal outcomes. Evidence is increasing that plant sterols possess immune-modulatory properties. Therefore, we investigated the potential therapeutic effects of plant sterols in lambs intra-amniotically (IA) exposed to Ureaplasma. Fetal lambs were IA exposed to Ureaplasma parvum (U. parvum, UP) for six days from 127 d-133 d of gestational age (GA). The plant sterols β-sitosterol and campesterol, dissolved with β-cyclodextrin (carrier), were given IA every two days from 122 d-131 d GA. Fetal circulatory cytokine levels, gut inflammation, intestinal injury, enterocyte maturation, and mucosal phospholipid and bile acid profiles were measured at 133 d GA (term 150 d). IA plant sterol administration blocked a fetal inflammatory response syndrome. Plant sterols reduced intestinal accumulation of proinflammatory phospholipids and tended to prevent mucosal myeloperoxidase-positive (MPO) cell influx, indicating an inhibition of gut inflammation. IA administration of plant sterols and carrier diminished intestinal mucosal damage, stimulated maturation of the immature epithelium, and partially prevented U. parvum-driven reduction of mucosal bile acids. In conclusion, we show that β-sitosterol and campesterol administration protected the fetus against adverse gut outcomes following UP-driven chorioamnionitis by preventing intestinal and systemic inflammation.
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Affiliation(s)
- Charlotte van Gorp
- Department of Pediatrics, School of Oncology and Developmental Biology (GROW), Maastricht University, 6202 AZ Maastricht, The Netherlands.
| | - Ilse H de Lange
- Department of Pediatrics, School of Oncology and Developmental Biology (GROW), Maastricht University, 6202 AZ Maastricht, The Netherlands.
- Department of Surgery, School for Nutrition, Toxicology and Metabolism (NUTRIM), Maastricht University, 6202 AZ Maastricht, The Netherlands.
| | - Owen B Spiller
- Cardiff University School of Medicine, Cardiff CF10 3AT, Wales, UK.
| | - Frédéric Dewez
- Maastricht Multimodal Molecular Imaging Institute (M4I), Maastricht University, 6202 AZ Maastricht, The Netherlands.
| | - Berta Cillero Pastor
- Maastricht Multimodal Molecular Imaging Institute (M4I), Maastricht University, 6202 AZ Maastricht, The Netherlands.
| | - Ron M A Heeren
- Maastricht Multimodal Molecular Imaging Institute (M4I), Maastricht University, 6202 AZ Maastricht, The Netherlands.
| | - Lilian Kessels
- Department of Pediatrics, School of Oncology and Developmental Biology (GROW), Maastricht University, 6202 AZ Maastricht, The Netherlands.
| | - Nico Kloosterboer
- Department of Pediatrics, School of Oncology and Developmental Biology (GROW), Maastricht University, 6202 AZ Maastricht, The Netherlands.
| | - Wim G van Gemert
- Department of Surgery, School for Nutrition, Toxicology and Metabolism (NUTRIM), Maastricht University, 6202 AZ Maastricht, The Netherlands.
| | - Michael L Beeton
- Cardiff School of Health Sciences, Cardiff Metropolitan University, Cardiff CF14 4XN, UK.
| | - Sarah J Stock
- MRC Centre for Reproductive Health, Queen's Medical Research Institute, University of Edinburgh, Edinburgh EH16 4TJ, UK.
| | - Alan H Jobe
- Division of Neonatology/Pulmonary Biology, The Perinatal Institute, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, OH 45229, USA.
| | - Matthew S Payne
- Division of Obstetrics and Gynecology, School of Medicine, The University of Western Australia, Crawley WA 6009, Australia.
| | - Matthew W Kemp
- School of Women's and Infant's Health, The University of Western Australia, Crawley WA 6009, Australia.
| | - Luc J Zimmermann
- Department of Pediatrics, School of Oncology and Developmental Biology (GROW), Maastricht University, 6202 AZ Maastricht, The Netherlands.
| | - Boris W Kramer
- Department of Pediatrics, School of Oncology and Developmental Biology (GROW), Maastricht University, 6202 AZ Maastricht, The Netherlands.
| | - Jogchum Plat
- Department of Nutrition and Movement Sciences, School for Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, 6202 AZ Maastricht, The Netherlands.
| | - Tim G A M Wolfs
- Department of Pediatrics, School of Oncology and Developmental Biology (GROW), Maastricht University, 6202 AZ Maastricht, The Netherlands.
- Department of Biomedical Engineering (BMT), School for Cardiovascular Diseases (CARIM), Maastricht University, 6202 AZ Maastricht, The Netherlands.
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Nikiforou M, Willburger C, de Jong AE, Kloosterboer N, Jellema RK, Ophelders DRMG, Steinbusch HWM, Kramer BW, Wolfs T. Global hypoxia-ischemia induced inflammation and structural changes in the preterm ovine gut which were not ameliorated by mesenchymal stem cell treatment. Mol Med 2016; 22:244-257. [PMID: 27257938 DOI: 10.2119/molmed.2015.00252] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Accepted: 04/11/2016] [Indexed: 12/13/2022] Open
Abstract
Perinatal asphyxia, a condition of impaired gas exchange during birth, leads to fetal hypoxia-ischemia (HI) and is associated with postnatal adverse outcomes including intestinal dysmotility and necrotizing enterocolitis (NEC). Evidence from adult animal models of transient, locally-induced intestinal HI has shown that inflammation is essential in HI-induced injury of the gut. Importantly, mesenchymal stem cell (MSC) treatment prevented this HI-induced intestinal damage. We therefore assessed whether fetal global HI induced inflammation, injury and developmental changes in the gut and whether intravenous MSC administration ameliorated these HI-induced adverse intestinal effects. In a preclinical ovine model, fetuses were subjected to umbilical cord occlusion (UCO), with or without MSC treatment, and sacrificed 7 days after UCO. Global HI increased the number of myeloperoxidase positive cells in the mucosa, upregulated mRNA levels of interleukin (IL)-1β and IL-17 in gut tissue and caused T-cell invasion in the intestinal muscle layer. Intestinal inflammation following global HI was associated with increased Ki67+ cells in the muscularis and subsequent muscle hyperplasia. Global HI caused distortion of glial fibrillary acidic protein immunoreactivity in the enteric glial cells and increased synaptophysin and serotonin expression in the myenteric ganglia. Intravenous MSC treatment did not ameliorate these HI-induced adverse intestinal events. Global HI resulted in intestinal inflammation and enteric nervous system abnormalities which are clinically associated with postnatal complications including feeding intolerance, altered gastrointestinal transit and NEC. The intestinal histopathological changes were not prevented by intravenous MSC treatment directly after HI, indicating that alternative treatment regimens for cell-based therapies should be explored.
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Affiliation(s)
- Maria Nikiforou
- Department of Pediatrics, Maastricht University Medical Center (MUMC), Maastricht, The Netherlands.,School for Mental Health and Neuroscience, Maastricht University, Maastricht, The Netherlands
| | - Carolin Willburger
- Department of Pediatrics, Maastricht University Medical Center (MUMC), Maastricht, The Netherlands
| | - Anja E de Jong
- Department of Pediatrics, Maastricht University Medical Center (MUMC), Maastricht, The Netherlands
| | - Nico Kloosterboer
- Department of Pediatrics, Maastricht University Medical Center (MUMC), Maastricht, The Netherlands
| | - Reint K Jellema
- Department of Pediatrics, Maastricht University Medical Center (MUMC), Maastricht, The Netherlands.,School for Mental Health and Neuroscience, Maastricht University, Maastricht, The Netherlands
| | - Daan R M G Ophelders
- Department of Pediatrics, Maastricht University Medical Center (MUMC), Maastricht, The Netherlands.,School for Mental Health and Neuroscience, Maastricht University, Maastricht, The Netherlands
| | - Harry W M Steinbusch
- School for Mental Health and Neuroscience, Maastricht University, Maastricht, The Netherlands
| | - Boris W Kramer
- Department of Pediatrics, Maastricht University Medical Center (MUMC), Maastricht, The Netherlands.,School for Mental Health and Neuroscience, Maastricht University, Maastricht, The Netherlands.,School of Oncology and Developmental Biology (GROW), Maastricht University, Maastricht, The Netherlands
| | - Tim Wolfs
- Department of Pediatrics, Maastricht University Medical Center (MUMC), Maastricht, The Netherlands.,School of Oncology and Developmental Biology (GROW), Maastricht University, Maastricht, The Netherlands
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Engel M, Nowacki RME, Boden P, Reiss LK, Uhlig S, Reynaert NL, Gopal P, Wouters EFM, Willems CHMP, Kloosterboer N, Wolfs TGAM, Zimmermann LJI, Vos GD, Kramer BW. The Effects of Dexamethasone and Oxygen in Ventilated Adult Sheep with Early Phase Acute Respiratory Distress Syndrome. Lung 2014; 193:97-103. [DOI: 10.1007/s00408-014-9670-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2014] [Accepted: 12/01/2014] [Indexed: 02/06/2023]
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Willems CHMP, Zimmermann LJI, Kloosterboer N, Kramer BW, van Iwaarden JF. Surfactant protein A binds TGF-β1 with high affinity and stimulates the TGF-β pathway. Innate Immun 2013; 20:192-9. [DOI: 10.1177/1753425913488012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We were able to demonstrate reversible, specific and high-affinity binding of radioactively-labelled TGF-β1 (125I-TGF-β1) to immobilized surfactant protein A (SP-A), with an apparent dissociation constant of 53 picomolar at ∼21℃. Addition of a 200-fold molar excess of the latency associated peptide (LAP) prevented and dissociated the binding of 125I-TGF-β1 to SP-A, whereas latent TGF-β1 had no effect. Using a bioassay for TGF-β1 activity—a luciferase reporter assay—we were able to show that SP-A in the presence of TGF-β1 stimulated the TGF-β1 pathway, whereas SP-A alone had no effect. Studies with structural analogues of the distinct SP-A tail domain and head domain indicated that stimulatory activity of SP-A resided in the head domain. No activation of latent TGF-β1 by SP-A was observed. In addition, we observed that SP-A inhibited TGF-β1 inactivation by LAP. These results indicate that SP-A may have a regulatory role in the TGF-β1-mediated processes in the lung.
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Affiliation(s)
- Coen HMP Willems
- Department of Paediatrics, School for Oncology and Developmental Biology (GROW), Maastricht University Medical Centre, Maastricht, the Netherlands
| | - Luc JI Zimmermann
- Department of Paediatrics, School for Oncology and Developmental Biology (GROW), Maastricht University Medical Centre, Maastricht, the Netherlands
| | - Nico Kloosterboer
- Department of Paediatrics, School for Oncology and Developmental Biology (GROW), Maastricht University Medical Centre, Maastricht, the Netherlands
| | - Boris W Kramer
- Department of Paediatrics, School for Oncology and Developmental Biology (GROW), Maastricht University Medical Centre, Maastricht, the Netherlands
| | - J Freek van Iwaarden
- Department of Paediatrics, School for Oncology and Developmental Biology (GROW), Maastricht University Medical Centre, Maastricht, the Netherlands
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Engel M, Nowacki RME, Reiss LK, Uhlig S, Willems CHMP, Kloosterboer N, van Iwaarden JF, Sewing ACP, Seehase M, Lambermont VAC, Collins JJP, Zimmermann LJI, Vos GD, Kramer BW. Comparison of recruitment manoeuvres in ventilated sheep with acute respiratory distress syndrome. Lung 2012; 191:77-86. [PMID: 23117276 DOI: 10.1007/s00408-012-9428-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2012] [Accepted: 09/24/2012] [Indexed: 01/05/2023]
Abstract
BACKGROUND Recruitment manoeuvres are widely used in clinical practice to open the lung and prevent lung injury by derecruitment, although the evidence is still discussed. In this study two different recruitment manoeuvres were compared to no recruitment manoeuvres (control) in ventilated sheep with acute respiratory distress syndrome (ARDS), induced by lung lavage. METHODS We performed a prospective, randomised study in 26 ventilated sheep with ARDS, to evaluate the effect of two different recruitment manoeuvres on gas exchange, blood pressure and lung injury. The two different recruitment manoeuvres, the high pressure recruitment manoeuvre (HPRM), with high peak pressure, and the smooth and moderate recruitment manoeuvre (SMRM), with lower peak pressure, were compared to controls (no recruitment) after disconnection. Oxygenation index and ventilation efficacy index were calculated to evaluate gas exchange. Lung injury was assessed by inflammatory response in broncho-alveolar lavage fluid (BALF) and blood and histology of the lung. RESULTS Oxygenation index improved significantly after both recruitment manoeuvres compared with controls, but no significant difference was found between the recruitment manoeuvres. Blood pressure decreased after HPRM but not after SMRM. HPRM induced a higher number of total cells and more neutrophils in the BALF. In the histology of the lung, mean alveolar size was increased in the dorsocranial region of the lung of SMRM compared to controls. CONCLUSION Recruitment manoeuvres improved oxygenation, but SMRM was superior, with respect to hemodynamics and pulmonary inflammation, in ventilated sheep suffering from ARDS induced by lung lavage.
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Affiliation(s)
- Monique Engel
- Department of Paediatrics, School for Oncology and Developmental Biology-GROW, Maastricht University Medical Centre (MUMC+), P. Debyelaan 25, P.O. Box 5800, 6202 AZ, Maastricht, The Netherlands.
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Willems CHMP, Zimmermann LJI, Langen RMR, van den Bosch MJA, Kloosterboer N, Kramer BW, van Iwaarden JF. Surfactant Protein A Influences Reepithelialization in an Alveolocapillary Model System. Lung 2012; 190:661-9. [DOI: 10.1007/s00408-012-9424-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2012] [Accepted: 09/21/2012] [Indexed: 10/27/2022]
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9
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Willems CH, Kloosterboer N, Kunzmann S, Kramer BW, Zimmermann LJ, van Iwaarden JF. Dissociation of transforming growth factors β1 and β2 from surfactant protein A (SP-A) by deglycosylation or deoxycholate treatment. J Immunol Methods 2012; 375:111-7. [DOI: 10.1016/j.jim.2011.09.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2011] [Revised: 09/14/2011] [Accepted: 09/26/2011] [Indexed: 10/17/2022]
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Been JV, Zoer B, Kloosterboer N, Kessels CGA, Zimmermann LJI, van Iwaarden JF, Villamor E. Pulmonary vascular endothelial growth factor expression and disaturated phospholipid content in a chicken model of hypoxia-induced fetal growth restriction. Neonatology 2010; 97:183-9. [PMID: 19864924 DOI: 10.1159/000252970] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2008] [Accepted: 02/13/2009] [Indexed: 11/19/2022]
Abstract
BACKGROUND Prenatal hypoxia is an important cause of intrauterine growth retardation that affects fetal lung maturation, although previous studies have rendered conflicting results. The fetal chicken model allows the study of the isolated effects of hypoxia during development. OBJECTIVES We hypothesized that prenatal hypoxia would differentially affect surfactant synthesis, depending on timing and duration of hypoxia. Pulmonary vascular endothelial growth factor (VEGF) expression was analyzed as a possible link between oxygen sensing and surfactant production. METHODS Fertilized White Leghorn eggs were incubated in normoxia, hyperoxia (60% O(2)) from day 15 or hypoxia (15% O(2)) from either day 6 or day 15 of incubation. Whole lung disaturated phospholipids (DSPL) and mRNA expression of VEGF isoforms were quantified at day 16 and 19. RESULTS Lung DSPL content increased approximately threefold between day 16 and 19 in control animals. Both hypoxia and hyperoxia from day 15 significantly increased DSPL content at day 19 versus control (103 +/- 22 and 116 +/- 18 vs. 81 +/- 15 microg/mg protein, p < 0.01 and p < 0.001, respectively), while long-term hypoxia tended to decrease DSPL content (65 +/- 17 microg/mg protein, p = 0.056). No differences in DSPL content were observed at day 16. Short-term hypoxia transiently up-regulated VEGF146 1.5-fold at day 16 (p < 0.05). A similar trend was observed for VEGF122 (p = 0.058) and VEGF190 (p = 0.08), while no differences were present at day 19. CONCLUSIONS Both prenatal hypoxia and hyperoxia induced during critical windows of lung development differentially modulate surfactant synthesis. Our data support the concept that fetal oxygen tension is a key signal in the regulation of the surfactant system.
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Affiliation(s)
- Jasper V Been
- Department of Paediatrics, School for Oncology and Developmental Biology (GROW), Maastricht University Medical Centre, NL-6202 AZ Maastricht, The Netherlands
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Been JV, Debeer A, van Iwaarden JF, Kloosterboer N, Passos VL, Naulaers G, Zimmermann LJ. Early alterations of growth factor patterns in bronchoalveolar lavage fluid from preterm infants developing bronchopulmonary dysplasia. Pediatr Res 2010; 67:83-9. [PMID: 19770691 DOI: 10.1203/pdr.0b013e3181c13276] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Chronic lung disease of prematurity (bronchopulmonary dysplasia; BPD) is characterized by an arrest in lung development. We hypothesized that early alterations in pulmonary expression of growth factors important for normal lung development would precede development of BPD. Bronchoalveolar lavage fluid (BALF) was obtained from ventilated preterm infants (n = 62) on postnatal d 0, 1, 3, and 7 and analyzed for total phospholipids (PL), VEGF, PDGF-BB, TGF-alpha and -beta1, granulocyte macrophage colony stimulating factor (GM-CSF), and keratinocyte growth factor (KGF). Levels (Ln transformed) were compared between infants developing BPD and BPD-free survivors, adjusted for potential confounders. BPD was associated with higher overall GM-CSF (beta (95% CI) = 0.69 (0.13;1.25); p < 0.05), lower overall latent TGF-beta1 (beta (95% CI) = -1.19 (-1.87, -0.39); p < 0.01) and total PL (beta (95% CI) = -0.64 (-1.23, -0.05); p < 0.05), and lower d 0 and 3 levels of VEGF (mean difference (95% CI) = -1.75 (-2.72, -0.77), p < 0.001; and -1.18 (-2.30, -0.06), p < 0.05, respectively) and TGF-alpha (mean difference (95% CI) = -0.73 (-1.42, -0.04), p < 0.05; and -1.01 (-1.64, -0.38), p < 0.01, respectively). Day 0 VEGF levels had the highest predictive value for BPD (area under receiver operating characteristic curve = 0.87; p < 0.01). In conclusion, substantial alterations in BALF growth factor levels are present in infants developing BPD. An early imbalance in pulmonary growth factors may contribute to the developmental arrest of the lung seen in BPD.
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Affiliation(s)
- Jasper V Been
- Department of Paediatrics, Maastricht University Medical Centre, Maastricht 6202 AZ, The Netherlands.
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Been JV, Zimmermann LJI, Debeer A, Kloosterboer N, van Iwaarden JF. Bronchoalveolar lavage fluid from preterm infants with chorioamnionitis inhibits alveolar epithelial repair. Respir Res 2009; 10:116. [PMID: 19930634 PMCID: PMC2784455 DOI: 10.1186/1465-9921-10-116] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2009] [Accepted: 11/23/2009] [Indexed: 11/24/2022] Open
Abstract
Background Preterm infants are highly susceptible to lung injury. While both chorioamnionitis and antenatal steroids induce lung maturation, chorioamnionitis is also associated with adverse lung development. We investigated the ability of bronchoalveolar lavage fluid (BALF) from ventilated preterm infants to restore alveolar epithelial integrity after injury in vitro, depending on whether or not they were exposed to chorioamnionitis or antenatal steroids. For this purpose, a translational model for alveolar epithelial repair was developed and characterised. Methods BALF was added to mechanically wounded monolayers of A549 cells. Wound closure was quantified over time and compared between preterm infants (gestational age < 32 wks) exposed or not exposed to chorioamnionitis and antenatal steroids (≥ 1 dose). Furthermore, keratinocyte growth factor (KGF) and vascular endothelial growth factor (VEGF) were quantified in BALF, and their ability to induce alveolar epithelial repair was evaluated in the model. Results On day 0/1, BALF from infants exposed to antenatal steroids significantly increased epithelial repair (40.3 ± 35.5 vs. -6.3 ± 75.0% above control/mg protein), while chorioamnionitis decreased wound-healing capacity of BALF (-2.9 ± 87.1 vs. 40.2 ± 36.9% above control/mg protein). BALF from patients with chorioamnionitis contained less KGF (11 (0-27) vs. 0 (0-4) pg/ml) and less detectable VEGF (66 vs. 95%) on day 0. BALF levels of VEGF and KGF correlated with its ability to induce wound repair. Moreover, KGF stimulated epithelial repair dose-dependently, although the low levels in BALF suggest KGF is not a major modulator of BALF-induced wound repair. VEGF also stimulated alveolar epithelial repair, an effect that was blocked by addition of soluble VEGF receptor-1 (sVEGFr1/Flt-1). However, BALF-induced wound repair was not significantly affected by addition of sVEGFr1. Conclusion Antenatal steroids improve the ability of BALF derived from preterm infants to stimulate alveolar epithelial repair in vitro. Conversely, chorioamnionitis is associated with decreased wound-healing capacity of BALF. A definite role for KGF and VEGF in either process could not be established. Decreased ability to induce alveolar epithelial repair after injury may contribute to the association between chorioamnionitis and adverse lung development in mechanically ventilated preterm infants.
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Affiliation(s)
- Jasper V Been
- Department of Paediatrics, School for Oncology and Developmental Biology (GROW), Maastricht University Medical Centre, PO Box 5800, 6202 AZ Maastricht, the Netherlands.
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Sweet DG, Huggett MT, Warner JA, Moss TJM, Kloosterboer N, Halliday HL, Newnham JP, Kallapur SG, Jobe AH, Kramer BW. Maternal betamethasone and chorioamnionitis induce different collagenases during lung maturation in fetal sheep. Neonatology 2008; 94:79-86. [PMID: 18264025 DOI: 10.1159/000115949] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2007] [Accepted: 10/29/2007] [Indexed: 11/19/2022]
Abstract
BACKGROUND Fetal lung maturation occurs after both maternal corticosteroid administration and chorioamnionitis. The effectors of this antenatally-induced lung maturation are not understood. Matrix metalloproteinases (MMPs) 2 and 9 are type-IV collagenases that can degrade alveolar basement membranes. OBJECTIVES We hypothesized that the structural changes of lung maturation by both antenatal corticosteroid treatment and chorioamnionitis would be associated with increases in these MMPs. METHODS 64 pregnant ewes were randomly assigned to one of four treatment groups: intra-amniotic injection of 10 mg endotoxin, maternal intramuscular injection of 0.5 mg/kg betamethasone, both treatments combined or saline-treated controls. We quantified MMP-2 which is derived from connective tissue and MMP-9 which is predominantly derived from neutrophils in fetal lung fluid of lambs after maternal corticosteroid therapy and induction of chorioamnionitis and the combination of both therapies given at 109-111 days' gestational age with delivery 1, 5 or 15 days later. RESULTS Betamethasone, endotoxin and the combined treatments increased both surfactant pool size, lung gas volume and reduced alveolar wall thickness at 15 days. MMP-2 concentration was increased after betamethasone. MMP-9 concentration increased after endotoxin-induced chorioamnionitis but decreased by the combined treatments. CONCLUSION Lung maturation via different pathways may use different forms of collagenases for remodelling lung structure.
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Affiliation(s)
- David G Sweet
- Department of Child Health, The Queen's University of Belfast, UK
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Sankatsing SUC, Cornelissen M, Kloosterboer N, Crommentuyn KML, Bosch TM, Mul FP, Jurriaans S, Huitema ADR, Beijnen JH, Lange JMA, Prins JM, Schuitemaker H. Antiviral activity of HIV type 1 protease inhibitors nelfinavir and indinavir in vivo is not influenced by P-glycoprotein activity on CD4+ T cells. AIDS Res Hum Retroviruses 2007; 23:19-27. [PMID: 17263628 DOI: 10.1089/aid.2006.0027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
P-glycoprotein (P-gp) can compromise the antiretroviral effect of a protease inhibitor (PI)-containing regimen for HIV-1, but can also reduce HIV-1 replication. We studied the net effect of P-gp on the intracellular HIV-1 RNA and DNA load in vivo. CD4(+) T cells were isolated from 27 HIV-1 patients (13 without and 14 with a PI-containing regimen) and subsequently sorted in CD45RO(-) (naive) and CD45RO(+) (memory) subsets with either high (P-gp(high)) or low (P-gp(low)) P-gp activity. Unspliced HIV-1 RNA and HIV-1 DNA load were determined. For each patient P-gp(high) and P-gp(low) subsets were compared. In patients on a PI-containing regimen, intracellular unspliced HIV-1 RNA was significantly lower in P-gp(high)-naive CD4(+) cells compared to P-gp(low)-naive CD4(+) cells (p = 0.04). The same trend was seen in naive CD4(+) cells of treatment naive patients. In both treated and untreated patients HIV-1 DNA levels were significantly lower in P-gp(high) than in P-gp(low) memory CD4(+) cells (p = 0.02 and p = 0.04). High cellular P-gp activity coincided with a reduced intracellular HIV-1 load in vivo, both in therapy-naive and in PI-treated patients. Therefore we conclude that the potential efflux function of P-gp on PIs may be clinically less relevant than the effect of P-gp on intracellular HIV-1 replication.
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Kloosterboer N, Groeneveld PHP, Jansen CA, van der Vorst TJK, Koning F, Winkel CN, Duits AJ, Miedema F, van Baarle D, van Rij RP, Brinkman K, Schuitemaker H. Natural controlled HIV infection: preserved HIV-specific immunity despite undetectable replication competent virus. Virology 2005; 339:70-80. [PMID: 15987650 DOI: 10.1016/j.virol.2005.06.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2005] [Revised: 03/11/2005] [Accepted: 06/01/2005] [Indexed: 11/15/2022]
Abstract
Long-term non-progressive HIV infection, characterized by low but detectable viral load and stable CD4 counts in the absence of antiviral therapy, is observed in about 5% of HIV-infected patients. Here we identified four therapy naïve individuals who are strongly seropositive for HIV-1 but who lack evidence of detectable HIV p24 antigen, plasma RNA, and proviral DNA in routine diagnostic testing. With an ultrasensitive PCR, we established that frequencies of pol proviral DNA sequences were as low as 0.2-0.5 copies/10(6) PBMC. HIV could not be isolated using up to 30x10(6) patient PBMC. One individual was heterozygous for CCR5 Delta32, but CCR5 expression on CD4+ T cells was normal to high in all four individuals. In vitro R5 and X4 HIV-1 susceptibility of CD8-depleted PBMC of all study subjects was significantly lower than the susceptibility of CD8-depleted PBMC of healthy blood donors. All individuals expressed protective HLA-B*58s alleles and showed evidence of HIV-specific cellular immunity either by staining with HLA-B*57 tetramers folded with an HIV RT or gag peptide or after stimulation with HIV-1 p24 gag, RT, or nef peptides in ELIspot analysis. HIV-specific CD4+ T helper cells were demonstrated by proliferation of CD4+ T cells and intracellular staining for IL-2 and IFNgamma after stimulation with an HIV-gag peptide pool. Sera of all individuals showed antibody-mediated neutralization of both R5 and X4 HIV-1 variants. These data implicate that very low-level antigen exposure is sufficient for sustained HIV-specific immunity and suggest the possibility of a multi-factorial control of HIV infection.
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Affiliation(s)
- Nico Kloosterboer
- Sanquin Research at CLB, Landsteiner Laboratory at the Academic Medical Center, Department of Clinical Viro Immunology, Plesmanlaan 125, University of Amsterdam, 1066 CX Amsterdam, The Netherlands
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Van der Bij A, Kloosterboer N, Prins M, Boeser‐Nunnink B, Geskus R, Lange J, Coutinho R, Schuitemaker H. Reply to George and to Stapleton et al. J Infect Dis 2005. [DOI: 10.1086/430506] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Van der Bij AK, Kloosterboer N, Prins M, Boeser-Nunnink B, Geskus RB, Lange JMA, Coutinho RA, Schuitemaker H. GB virus C coinfection and HIV-1 disease progression: The Amsterdam Cohort Study. J Infect Dis 2005; 191:678-85. [PMID: 15688280 DOI: 10.1086/427559] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2004] [Accepted: 09/14/2004] [Indexed: 11/03/2022] Open
Abstract
BACKGROUND The effect that GB virus C (GBV-C) coinfection has on human immunodeficiency virus type 1 (HIV-1) disease progression is controversial and therefore was studied in 326 homosexual men from the prospective Amsterdam Cohort Studies who had an accurately estimated date of HIV-1 seroconversion and were followed up for a median period of 8 years. METHODS A first plasma sample, obtained shortly after HIV-1 seroconversion, and a last plasma sample, obtained before 1996, were tested for GBV-C RNA and envelope protein-2 antibodies. The effect that GBV-C has on HIV-1 disease progression was studied by use of time-dependent Cox proportional-hazards models with adjustment for baseline variables and time-updated HIV-1 RNA and CD4(+) cell count. RESULTS Men who lost GBV-C RNA between collection of the first sample and collection of the last sample had a nearly 3-fold-higher risk of HIV-1 disease progression than did men who had never had GBV-C RNA. This effect became much smaller after adjustment for time-updated CD4(+) cell count. CONCLUSION Rather than a positive effect of GBV-C RNA presence, a negative effect of GBV-C RNA loss on HIV-1 disease progression was found, which disappeared after adjustment for time-updated CD4(+) cell count. We therefore hypothesize that GBV-C RNA persistence depends on the presence of a sufficient number of CD4(+) cells--and that the CD4(+) cell decrease associated with HIV-1 disease progression is a cause, not a consequence, of GBV-C RNA loss.
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Affiliation(s)
- Akke K Van der Bij
- Department of HIV and STD Research, Cluster of Infectious Diseases, Municipal Health Service of Amsterdam, The Netherlands
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van Hulten MC, Witteveldt J, Peters S, Kloosterboer N, Tarchini R, Fiers M, Sandbrink H, Lankhorst RK, Vlak JM. The white spot syndrome virus DNA genome sequence. Virology 2001; 286:7-22. [PMID: 11448154 DOI: 10.1006/viro.2001.1002] [Citation(s) in RCA: 344] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
White spot syndrome virus (WSSV) is at present a major scourge to worldwide shrimp cultivation. We have determined the entire sequence of the double-stranded, circular DNA genome of WSSV, which contains 292,967 nucleotides encompassing 184 major open reading frames (ORFs). Only 6% of the WSSV ORFs have putative homologues in databases, mainly representing genes encoding enzymes for nucleotide metabolism, DNA replication, and protein modification. The remaining ORFs are mostly unassigned, except for five, which encode structural virion proteins. Unique features of WSSV are the presence of a very long ORF of 18,234 nucleotides, with unknown function, a collagen-like ORF, and nine regions, dispersed along the genome, each containing a variable number of 250-bp tandem repeats. The collective information on WSSV and the phylogenetic analysis on the viral DNA polymerase suggest that WSSV differs profoundly from all presently known viruses and that it is a representative of a new virus family.
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Affiliation(s)
- M C van Hulten
- Laboratory of Virology, Wageningen University, Binnenhaven 11, Wageningen, 6709 PD, The Netherlands
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