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Spinazzè A, Campagnolo D, Cattaneo A, Urso P, Sakellaris IA, Saraga DE, Mandin C, Canha N, Mabilia R, Perreca E, Mihucz VG, Szigeti T, Ventura G, de Oliveira Fernandes E, de Kluizenaar Y, Cornelissen E, Hänninen O, Carrer P, Wolkoff P, Cavallo DM, Bartzis JG. Indoor gaseous air pollutants determinants in office buildings-The OFFICAIR project. Indoor Air 2020; 30:76-87. [PMID: 31593610 DOI: 10.1111/ina.12609] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 09/06/2019] [Accepted: 09/29/2019] [Indexed: 06/10/2023]
Abstract
The aim of this study was to identify determinants of aldehyde and volatile organic compound (VOC) indoor air concentrations in a sample of more than 140 office rooms, in the framework of the European OFFICAIR research project. A large field campaign was performed, which included (a) the air sampling of aldehydes and VOCs in 37 newly built or recently retrofitted office buildings across 8 European countries in summer and winter and (b) the collection of information on building and offices' characteristics using checklists. Linear mixed models for repeated measurements were applied to identify the main factors affecting the measured concentrations of selected indoor air pollutants (IAPs). Several associations between aldehydes and VOCs concentrations and buildings' structural characteristic or occupants' activity patterns were identified. The aldehyde and VOC determinants in office buildings include building and furnishing materials, indoor climate characteristics (room temperature and relative humidity), the use of consumer products (eg, cleaning and personal care products, office equipment), as well as the presence of outdoor sources in the proximity of the buildings (ie, vehicular traffic). Results also showed that determinants of indoor air concentrations varied considerably among different type of pollutants.
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Affiliation(s)
- Andrea Spinazzè
- Department of Science and High Technology, University of Insubria, Como, Italy
| | - Davide Campagnolo
- Department of Science and High Technology, University of Insubria, Como, Italy
| | - Andrea Cattaneo
- Department of Science and High Technology, University of Insubria, Como, Italy
| | - Patrizia Urso
- Department of Biomedical and Clinical Sciences-Hospital "L. Sacco", University of Milan, Milano, Italy
- Radiotherapy Department, Clinica Luganese Moncucco, Lugano, Switzerland
| | - Ioannis A Sakellaris
- Department of Mechanical Engineering, University of Western Macedonia, Kozani, Greece
| | - Dikaia E Saraga
- Department of Mechanical Engineering, University of Western Macedonia, Kozani, Greece
| | - Corinne Mandin
- Scientific and Technical Centre for Building, University Paris Est, Marne-la-Vallée, France
| | - Nuno Canha
- Instituto Superior Técnico, Centro de Ciências e Tecnologias Nucleares, Universidade de Lisboa, Bobadela, Portugal
| | - Rosanna Mabilia
- Department of Biology, Agriculture and Food Science, National Research Council, Roma, Italy
| | - Erica Perreca
- Department of Biology, Agriculture and Food Science, National Research Council, Roma, Italy
| | - Victor G Mihucz
- Cooperative Research Centre for Environmental Sciences, Eötvös Loránd University, Budapest, Hungary
| | | | - Gabriela Ventura
- Institute of Science and Innovation in Mechanical Engineering and Industrial Management, Porto, Portugal
| | | | - Yvonne de Kluizenaar
- The Netherlands Organization for Applied Scientific Research (TNO), The Hague, The Netherlands
| | - Eric Cornelissen
- The Netherlands Organization for Applied Scientific Research (TNO), The Hague, The Netherlands
| | - Otto Hänninen
- Department of Health Protection, National Institute for Health and Welfare, Kuopio, Finland
| | - Paolo Carrer
- Department of Biomedical and Clinical Sciences-Hospital "L. Sacco", University of Milan, Milano, Italy
| | - Peder Wolkoff
- National Research Centre for the Working Environment, Copenhagen, Denmark
| | - Domenico M Cavallo
- Department of Science and High Technology, University of Insubria, Como, Italy
| | - John G Bartzis
- Department of Mechanical Engineering, University of Western Macedonia, Kozani, Greece
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Urquhart R, Kendell C, Cornelissen E, Madden L, Powell B, Kissmann G, Richmond S, Willis C, Bender J. Identifying Determinants of Intervention Sustainability in Cancer Survivorship Care. J Glob Oncol 2018. [DOI: 10.1200/jgo.18.28200] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Background: Substantial gains could be made in reducing the cancer burden if current scientific evidence was applied in practice. The World Health Organization estimates that, worldwide, one-third of cancer cases could be prevented and another one-third cured if evidence was consistently implemented and sustained in cancer care. However, moving evidence-based interventions into care has proven a significant challenge. Even when interventions are put into practice, they often fail to become integrated into the long-term routines of organizations. This poor sustainability means many patients do not benefit from the best care possible. There is little empirical data on the factors that influence the sustainability of interventions in clinical settings. Aim: To identify the determinants of, and explore the processes that facilitate, sustainability of interventions in cancer care survivorship. Sustainability was defined as the continued use of an intervention and its associated components and/or the continued achievement of the intended benefits after the initial funding or support period. Methods: We first conducted an environmental scan to identify interventions in cancer survivorship care implemented in Canada. This was followed by a literature review to ascertain the evidence base for each intervention and identify those meeting the US National Cancer Institute's criteria for evidence-based interventions. We then recruited key individuals relevant to the evidence-based interventions for semistructured in-depth interviews to explore issues related to their sustainability. Interview data are being analyzed through an inductive grounded theory approach using constant comparative analysis. Results: Twenty-seven individuals participated in the interviews. Preliminary findings reveal five factors that influenced whether, and the extent to which, interventions were sustained in cancer survivorship care. Participants emphasized (1) access to sufficient resources and funding is critical to sustaining interventions after the initial funding period. The ability of a team or organization to (2) evaluate a new intervention and demonstrate its quality and usefulness was often perceived as necessary to obtain continued funding as well as ongoing buy in and support from key stakeholders. In addition, the (3) extent to which the intervention can be adapted, (4) support of senior management, and (5) existence of an on-the-ground champion to continuously promote, adapt, lead, and spread the intervention were perceived as important factors that contribute to an intervention's sustained use. Conclusion: Research into determinants and processes of sustainability is critical to ensure we plan and act in ways that maximize the sustained use of interventions shown to benefit patients and our cancer systems. Issues related to evaluation, adaptability, and ongoing moral and material supports should be considered before, during, and after implementation efforts.
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Affiliation(s)
| | | | | | | | | | | | | | - C. Willis
- Dalhousie University, Halifax, Canada
| | - J. Bender
- Dalhousie University, Halifax, Canada
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Szigeti T, Dunster C, Cattaneo A, Spinazzè A, Mandin C, Le Ponner E, de Oliveira Fernandes E, Ventura G, Saraga DE, Sakellaris IA, de Kluizenaar Y, Cornelissen E, Bartzis JG, Kelly FJ. Spatial and temporal variation of particulate matter characteristics within office buildings - The OFFICAIR study. Sci Total Environ 2017; 587-588:59-67. [PMID: 28228238 DOI: 10.1016/j.scitotenv.2017.01.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2016] [Revised: 12/17/2016] [Accepted: 01/02/2017] [Indexed: 06/06/2023]
Abstract
In the frame of the OFFICAIR project, office buildings were investigated across Europe to assess how the office workers are exposed to different particulate matter (PM) characteristics (i.e. PM2.5 mass concentration, particulate oxidative potential (OP) based on ascorbate and reduced glutathione depletion, trace element concentration and total particle number concentration (PNC)) within the buildings. Two offices per building were investigated during the working hours (5 consecutive days; 8h per day) in two campaigns. Differences were observed for all parameters across the office buildings. Our results indicate that the monitoring of the PM2.5 mass concentration in different offices within a building might not reflect the spatial variation of the health relevant PM characteristics such as particulate OP or the concentration of certain trace elements (e.g., Cu, Fe), since larger differences were apparent within a building for these parameters compared to that obtained for the PM2.5 mass concentration in many cases. The temporal variation was larger for almost all PM characteristics (except for the concentration of Mn) than the spatial differences within the office buildings. These findings indicate that repeated or long-term monitoring campaigns are necessary to have information about the temporal variation of the PM characteristics. However, spatial variation in exposure levels within an office building may cause substantial differences in total exposure in the long term. We did not find strong associations between the investigated indoor activities such as printing or windows opening and the PNC values. This might be caused by the large number of factors affecting PNC indoors and outdoors.
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Affiliation(s)
- Tamás Szigeti
- Cooperative Research Centre for Environmental Sciences, Eötvös Loránd University, Pázmány Péter stny. 1/A, H-1117 Budapest, Hungary.
| | - Christina Dunster
- MRC-PHE Centre for Environment and Health, National Institute for Health Research Health Protection Research Unit in Health Impact of Environmental Hazards, King's College London, 150 Stamford Street, SE1 9NH London, United Kingdom
| | - Andrea Cattaneo
- Department of Science and High Technology, University of Insubria, via Valleggio 11, 22100 Como, Italy
| | - Andrea Spinazzè
- Department of Science and High Technology, University of Insubria, via Valleggio 11, 22100 Como, Italy
| | - Corinne Mandin
- Centre Scientifique et Technique du Bâtiment (CSTB), Université Paris Est, 84 avenue Jean Jaurés, Champs-sur-Marne, F-77447 Marne-la-Vallée Cedex 2, France
| | - Eline Le Ponner
- Centre Scientifique et Technique du Bâtiment (CSTB), Université Paris Est, 84 avenue Jean Jaurés, Champs-sur-Marne, F-77447 Marne-la-Vallée Cedex 2, France
| | - Eduardo de Oliveira Fernandes
- Institute of Science and Innovation in Mechanical Engineering and Industrial Management, Rua Dr. Roberto Frias s/n, 4200-465 Porto, Portugal
| | - Gabriela Ventura
- Institute of Science and Innovation in Mechanical Engineering and Industrial Management, Rua Dr. Roberto Frias s/n, 4200-465 Porto, Portugal
| | - Dikaia E Saraga
- Department of Mechanical Engineering, University of Western Macedonia, Sialvera & Bakola Street, 50100 Kozani, Greece
| | - Ioannis A Sakellaris
- Department of Mechanical Engineering, University of Western Macedonia, Sialvera & Bakola Street, 50100 Kozani, Greece
| | - Yvonne de Kluizenaar
- The Netherlands Organization for Applied Scientific Research (TNO), P.O. Box 49, 2600 AA Delft, The Netherlands
| | - Eric Cornelissen
- The Netherlands Organization for Applied Scientific Research (TNO), P.O. Box 49, 2600 AA Delft, The Netherlands
| | - John G Bartzis
- Department of Mechanical Engineering, University of Western Macedonia, Sialvera & Bakola Street, 50100 Kozani, Greece
| | - Frank J Kelly
- MRC-PHE Centre for Environment and Health, National Institute for Health Research Health Protection Research Unit in Health Impact of Environmental Hazards, King's College London, 150 Stamford Street, SE1 9NH London, United Kingdom.
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Mandin C, Trantallidi M, Cattaneo A, Canha N, Mihucz VG, Szigeti T, Mabilia R, Perreca E, Spinazzè A, Fossati S, De Kluizenaar Y, Cornelissen E, Sakellaris I, Saraga D, Hänninen O, De Oliveira Fernandes E, Ventura G, Wolkoff P, Carrer P, Bartzis J. Assessment of indoor air quality in office buildings across Europe - The OFFICAIR study. Sci Total Environ 2017; 579:169-178. [PMID: 27866741 DOI: 10.1016/j.scitotenv.2016.10.238] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2016] [Revised: 09/27/2016] [Accepted: 10/25/2016] [Indexed: 05/27/2023]
Abstract
The European project OFFICAIR aimed to broaden the existing knowledge regarding indoor air quality (IAQ) in modern office buildings, i.e., recently built or refurbished buildings. Thirty-seven office buildings participated in the summer campaign (2012), and thirty-five participated in the winter campaign (2012-2013). Four rooms were investigated per building. The target pollutants were twelve volatile organic compounds, seven aldehydes, ozone, nitrogen dioxide and particulate matter with aerodynamic diameter <2.5μm (PM2.5). Compared to other studies in office buildings, the benzene, toluene, ethylbenzene, and xylene concentrations were lower in OFFICAIR buildings, while the α-pinene and d-limonene concentrations were higher, and the aldehyde, nitrogen dioxide and PM2.5 concentrations were of the same order of magnitude. When comparing summer and winter, significantly higher concentrations were measured in summer for formaldehyde and ozone, and in winter for benzene, α-pinene, d-limonene, and nitrogen dioxide. The terpene and 2-ethylhexanol concentrations showed heterogeneity within buildings regardless of the season. Considering the average of the summer and winter concentrations, the acetaldehyde and hexanal concentrations tended to increase by 4-5% on average with every floor level increase, and the nitrogen dioxide concentration tended to decrease by 3% on average with every floor level increase. A preliminary evaluation of IAQ in terms of potential irritative and respiratory health effects was performed. The 5-day median and maximum indoor air concentrations of formaldehyde and ozone did not exceed their respective WHO air quality guidelines, and those of acrolein, α-pinene, and d-limonene were lower than their estimated thresholds for irritative and respiratory effects. PM2.5 indoor concentrations were higher than the 24-h and annual WHO ambient air quality guidelines.
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Affiliation(s)
- Corinne Mandin
- Scientific and Technical Centre for Building (CSTB), Marne-la-Vallée, France.
| | | | | | - Nuno Canha
- Scientific and Technical Centre for Building (CSTB), Marne-la-Vallée, France
| | | | | | - Rosanna Mabilia
- National Research Council, Institute of Atmospheric Pollution Research, Rome, Italy
| | - Erica Perreca
- National Research Council, Institute of Atmospheric Pollution Research, Rome, Italy
| | | | | | - Yvonne De Kluizenaar
- The Netherlands Organization for Applied Scientific Research (TNO), Delft, The Netherlands
| | - Eric Cornelissen
- The Netherlands Organization for Applied Scientific Research (TNO), Delft, The Netherlands
| | | | | | - Otto Hänninen
- National Institute for Health and Welfare (THL), Kuopio, Finland
| | | | - Gabriela Ventura
- Institute of Science and Innovation in Mechanical Engineering and Industrial Management (INEGI), Porto, Portugal
| | - Peder Wolkoff
- National Research Centre for the Working Environment, Copenhagen, Denmark
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Buntinx L, Voets T, Morlion B, Vangeel L, Janssen M, Cornelissen E, Vriens J, de Hoon J, Levtchenko E. TRPV1 dysfunction in cystinosis patients harboring the homozygous 57 kb deletion. Sci Rep 2016; 6:35395. [PMID: 27734949 PMCID: PMC5062165 DOI: 10.1038/srep35395] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Accepted: 09/27/2016] [Indexed: 11/12/2022] Open
Abstract
Cystinosis is a rare autosomal recessive disorder characterized by lysosomal cystine accumulation due to loss of function of the lysosomal cystine transporter (CTNS). The most common mutation in cystinosis patients of Northern Europe consists of a 57-kb deletion. This deletion not only inactivates the CTNS gene but also extends into the non-coding region upstream of the start codon of the TRPV1 gene, encoding the capsaicin- and heat-sensitive ion channel TRPV1. To evaluate the consequences of the 57-kb deletion on functional TRPV1 expression, we compared thermal, mechanical and chemical sensitivity of cystinosis patients with matched healthy controls. Whereas patients heterozygous for the 57-kb deletion showed normal sensory responses, homozygous subjects exhibited a 60% reduction in vasodilation and pain evoked by capsaicin, as well as an increase in heat detection threshold. Responses to cold, mechanical stimuli or cinnamaldehyde, an agonist of the related nociceptor channel TRPA1, were unaltered. We conclude that cystinosis patients homozygous for the 57-kb deletion exhibit a strong reduction of TRPV1 function, leading to sensory deficiencies akin to the phenotype of TRPV1-deficient mice. These deficits may account for the reported sensory alterations and thermoregulatory deficits in these patients, and provide a paradigm for life-long TRPV1 deficiency in humans.
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Affiliation(s)
- L Buntinx
- Center for Clinical Pharmacology, Department of Pharmaceutical and Pharmacological Sciences, KULeuven, Herestraat 49, 3000 Leuven, Belgium
| | - T Voets
- Department of Cellular and Molecular Medicine, KULeuven, Herestraat 49, 3000 Leuven, Belgium
| | - B Morlion
- Center for algology and pain management, Department of Cardiovascular Sciences, KULeuven, Weligerveld 1, 3212 Pellenberg, Belgium
| | - L Vangeel
- Department of Cellular and Molecular Medicine, KULeuven, Herestraat 49, 3000 Leuven, Belgium
| | - M Janssen
- Department of internal medicine, Radboud UMC Nijmegen, Geert Grooteplein-Zuid 22, 6525 GA Nijmegen, The Netherlands
| | - E Cornelissen
- Department of Pediatric Nephrology, Radboud UMC Nijmegen, Geert Grooteplein-Zuid 22, 6525 GA Nijmegen, The Netherlands
| | - J Vriens
- Department of Development and Regeneration, KULeuven, Herestraat 49, 3000 Leuven, Belgium
| | - J de Hoon
- Center for Clinical Pharmacology, Department of Pharmaceutical and Pharmacological Sciences, KULeuven, Herestraat 49, 3000 Leuven, Belgium
| | - E Levtchenko
- Department of Development and Regeneration, KULeuven, Herestraat 49, 3000 Leuven, Belgium
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Crevecoeur I, Brooks A, Ribot I, Cornelissen E, Semal P. Late Stone Age human remains from Ishango (Democratic Republic of Congo): New insights on Late Pleistocene modern human diversity in Africa. J Hum Evol 2016; 96:35-57. [PMID: 27343771 DOI: 10.1016/j.jhevol.2016.04.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [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: 10/22/2015] [Revised: 04/08/2016] [Accepted: 04/19/2016] [Indexed: 12/11/2022]
Abstract
Although questions of modern human origins and dispersal are subject to intense research within and outside Africa, the processes of modern human diversification during the Late Pleistocene are most often discussed within the context of recent human genetic data. This situation is due largely to the dearth of human fossil remains dating to the final Pleistocene in Africa and their almost total absence from West and Central Africa, thus limiting our perception of modern human diversification within Africa before the Holocene. Here, we present a morphometric comparative analysis of the earliest Late Pleistocene modern human remains from the Central African site of Ishango in the Democratic Republic of Congo. The early Late Stone Age layer (eLSA) of this site, dated to the Last Glacial Maximum (25-20 Ky), contains more than one hundred fragmentary human remains. The exceptional associated archaeological context suggests these remains derived from a community of hunter-fisher-gatherers exhibiting complex social and cognitive behaviors including substantial reliance on aquatic resources, development of fishing technology, possible mathematical notations and repetitive use of space, likely on a seasonal basis. Comparisons with large samples of Late Pleistocene and early Holocene modern human fossils from Africa and Eurasia show that the Ishango human remains exhibit distinctive characteristics and a higher phenotypic diversity in contrast to recent African populations. In many aspects, as is true for the inner ear conformation, these eLSA human remains have more affinities with Middle to early Late Pleistocene fossils worldwide than with extant local African populations. In addition, cross-sectional geometric properties of the long bones are consistent with archaeological evidence suggesting reduced terrestrial mobility resulting from greater investment in and use of aquatic resources. Our results on the Ishango human remains provide insights into past African modern human diversity and adaptation that are consistent with genetic theories about the deep sub-structure of Late Pleistocene African populations and their complex evolutionary history of isolation and diversification.
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Affiliation(s)
- I Crevecoeur
- UMR 5199 PACEA, CNRS, Université de Bordeaux, Pessac, France.
| | - A Brooks
- Department of Anthropology, George Washington University, Washington DC, USA
| | - I Ribot
- Département d'Anthropologie, Université de Montréal, Montréal, Canada
| | - E Cornelissen
- Culturele Antropologie/Prehistorie en Archeologie, Koninklijk Museum voor Midden-Afrika (KMMA), Tervuren, Belgium
| | - P Semal
- Scientific Service of Heritage, Royal Belgian Institute of Natural Sciences (RBINS), Brussels, Belgium
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Lugtenberg D, Arts H, Reeuwijk JV, Cornelissen E, Deegens J, Hofstra J, Wetzels J, Gilissen C, Roepman R, Kamsteeg E, Bongers E. Multidisciplinary nephrogenetic outpatient clinic combined with diagnostic exome sequencing for improved diagnostics and treatment. Cilia 2015. [PMCID: PMC4519149 DOI: 10.1186/2046-2530-4-s1-p53] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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8
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Cornelissen E, Dewerchin HL, Van Hamme E, Nauwynck HJ. Absence of antibody-dependent, complement-mediated lysis of feline infectious peritonitis virus-infected cells. Virus Res 2009; 144:285-9. [PMID: 19720244 PMCID: PMC7114424 DOI: 10.1016/j.virusres.2009.03.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [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: 12/23/2008] [Revised: 03/23/2009] [Accepted: 03/31/2009] [Indexed: 11/25/2022]
Abstract
Cats infected with virulent feline coronavirus which causes feline infectious peritonitis (FIP) usually succumb to disease despite high antibody concentrations. One of the mechanisms that can help resolving infection is antibody-dependent, complement-mediated lysis (ADCML) of infected cells. ADCML consists of virus-specific antibodies that bind to cell surface expressed viral proteins which result in complement activation and cell lysis. The objective of this study was to determine the sensitivity of FIP-virus (FIPV) infected cells towards ADCML and to examine the role of the accessory proteins 3abc and 7ab in this process. ADCML assays, using FIPV strain 79-1146 and its deletion mutant strain Δ3abc/Δ7ab, were performed on: (i) CrFK cells that show surface-expressed viral antigens, (ii) monocytes without surface-expressed viral proteins due to retention and (iii) monocytes with surface-expressed viral proteins since the antibody-mediated internalization of these proteins was blocked. As expected, no ADCML was detected of the monocytes without surface-expressed viral antigens. Surprisingly, no lysis was observed in the CrFK cells and the monocytes that do show surface-expressed viral proteins, while controls showed that the ADCML assay was functional. These experiments proof that FIPV can employ another immune evasion strategy against ADCML (besides preventing surface expression): the inhibition of complement-mediated lysis. This new evasion strategy is not attributed to the group-specific proteins since lysis of cells infected with FIPV Δ3abc/Δ7ab was not detected.
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Affiliation(s)
- E Cornelissen
- Laboratory of Virology, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
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Cornelissen E, Dewerchin H, Van Hamme E, Nauwynck H. Absence of surface expression of feline infectious peritonitis virus (FIPV) antigens on infected cells isolated from cats with FIP. Vet Microbiol 2006; 121:131-7. [PMID: 17188823 PMCID: PMC7127496 DOI: 10.1016/j.vetmic.2006.11.026] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2006] [Revised: 11/16/2006] [Accepted: 11/28/2006] [Indexed: 12/04/2022]
Abstract
Feline infectious peritonitis virus (FIPV) positive cells are present in pyogranulomas and exudates from cats with FIP. These cells belong mainly to the monocyte/macrophage lineage. How these cells survive in immune cats is not known. In this study, FIPV positive cells were isolated from pyogranulomas and exudates of 12 naturally FIPV-infected cats and the presence of two immunologic targets, viral antigens and MHC I, on their surface was determined. The majority of the infected cells were confirmed to be cells from the monocyte/macrophage lineage. No surface expression of viral antigens was detected on FIPV positive cells. MHC I molecules were present on all the FIPV positive cells. After cultivation of the isolated infected cells, 52 ± 10% of the infected cells re-expressed viral antigens on the plasma membrane. In conclusion, it can be stated that in FIP cats, FIPV replicates in cells of the monocyte/macrophage lineage without carrying viral antigens in their plasma membrane, which could allow them to escape from antibody-dependent cell lysis.
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Affiliation(s)
| | | | | | - H.J. Nauwynck
- Corresponding author. Tel.: +32 9 264 73 73; fax: +32 9 264 74 95.
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11
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Dewerchin HL, Cornelissen E, Nauwynck HJ. Replication of feline coronaviruses in peripheral blood monocytes. Arch Virol 2005; 150:2483-500. [PMID: 16052283 PMCID: PMC7086860 DOI: 10.1007/s00705-005-0598-6] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2005] [Accepted: 05/23/2005] [Indexed: 10/25/2022]
Abstract
Feline infectious peritonitis virus (FIPV) (Coronaviridae) causes the most lethal viral infection in cats: FIP. The related feline enteric coronavirus (FECV) causes mild enteritis. Why these feline coronaviruses manifest so differently in vivo is not known. In this study, infection kinetics (titres and antigen expression) of FIPV 79-1146, and FECV 79-1683, were determined in peripheral blood monocytes from 3 donor cats and compared to those in Crandell feline kidney (CrFK) cells. The infection kinetics in monocytes were host dependent. Monocytes from 1 cat were resistant to both FIPV- and FECV-infection. Monocytes from the other 2 cats could initially be infected by both FIPV and FECV but FIPV infection was sustained in monocytes of only one cat. FECV-infection was never sustained and viral production was up to 100 times lower than in FIPV-infected monocytes. In CrFK cells, FIPV and FECV infection kinetics did not differ. In monocytes of a larger cat population (n = 19) the 3 infection patterns were also found. Considering all 22 investigated cats, 3/22 were not susceptible for FIPV and FECV. The rest could be infected with FECV and FIPV but 10/22 cats had monocytes that only sustained FIPV infection and 9/22 sustained neither FIPV nor FECV infection.
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Affiliation(s)
- H L Dewerchin
- Laboratory of Virology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
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12
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Van der Bruggen B, Hawrijk I, Cornelissen E, Vandecasteele C. Direct nanofiltration of surface water using capillary membranes: comparison with flat sheet membranes. Sep Purif Technol 2003. [DOI: 10.1016/s1383-5866(02)00184-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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13
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Abstract
Three archaeological sites at Katanda on the Upper Semliki River in the Western Rift Valley of Zaire have provided evidence for a well-developed bone industry in a Middle Stone Age context. Artifacts include both barbed and unbarbed points as well as a daggerlike object. Dating by both direct and indirect means indicate an age of approximately 90,000 years or older. Together with abundant fish (primarily catfish) remains, the bone technology indicates that a complex subsistence specialization had developed in Africa by this time. The level of behavioral competence required is consistent with that of upper Paleolithic Homo sapiens sapiens. These data support an African origin of behaviorally as well as biologically modern humans.
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Affiliation(s)
- J E Yellen
- Archaeology Program, National Science Foundation, Arlington, VA 22230, USA
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Abstract
This study examined the relation between WAIS and Wilson predictor of premorbid intelligence scores of 27 depressed and 34 nondepressed psychiatric patients. No significant difference was found between the WAIS and Wilson predictor of premorbid intelligence scores nor between the Verbal and Performance IQs.
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Affiliation(s)
- W W Hale
- Academic Medical Center, Amsterdam, The Netherlands
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Fortan L, Cornelissen E, De Neve W, Beeckmans S, van den Berge D, Storme G, Kanarek L. Not the presence but the synthesis of HSPS correlates with thermotolerance in a fibrosarcoma MO4 cell-line. Anticancer Res 1989; 9:1207-11. [PMID: 2817804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
This study reports the induction of heat shock proteins (hsps) and thermotolerance in a MO4 cell line. An enhanced synthesis of hsp68, hsp70 and hsp90 was observed. After 6 hrs, the synthesis of hsp68 and hsp70 decreased to the control value. Hsp90 synthesis was absent after 10 hrs. However, hsps were found to be stable for longer periods of time (more than 48 hrs). A coupled study of hsps and SF demonstrated that an induction of hsps were followed by a change in the slope of the survival curve. Thermotolerance, as expressed by the observed SF after a second heating, is only present during the first 4 hrs and decayed between 4 and 8 hrs. We could not find a correlation between the presence of hsps and thermotolerance, but only between the synthesis of hsps and thermotolerance in MO4 cells.
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Affiliation(s)
- L Fortan
- Oncologic Center V.U.B., Department of Radiotherapy, Brussels, Belgium
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