1
|
Jonker M, Engelsma C, Visser A. [Decision-making concerning involuntary oral care in older individuals with dementia]. Ned Tijdschr Tandheelkd 2024; 131:21-27. [PMID: 38193354 DOI: 10.5177/ntvt.2024.01.23072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
Many older individuals with dementia show care-resistant behavior for oral care. Providing care despite resistance is considered to be involuntary care. The Dutch law, 'Wet zorg en dwang' (care and coercion), states that care must be ceased in the presence of resistance, unless there is (a risk of) serious harm. This study was conducted to gain insight into the attitudes of healthcare providers with regard to involuntary oral care in older individuals with dementia. An online questionnaire consisting of general questions, case specific questions and knowledge questions about the Dutch law was filled out by 392 care providers. In all cases, a discrepancy was seen between the assessment of oral health problems as potentially harmful and the willingness to provide involuntary oral care. Hence, many healthcare providers are aware of the subsequent potential health risks related to not providing care, but are still reluctant to provide involuntary oral care. A large part of the healthcare providers also has a low level of knowledge with regard to the Dutch law 'Wet zorg en Dwang'.
Collapse
|
2
|
Jonker M, Engelsma C, Manton DJ, Visser A. Decision-Making concerning Involuntary Oral Care for Older Individuals with Dementia. Int J Environ Res Public Health 2022; 19:16655. [PMID: 36554537 PMCID: PMC9779801 DOI: 10.3390/ijerph192416655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/06/2022] [Accepted: 12/09/2022] [Indexed: 06/17/2023]
Abstract
Many older individuals with dementia (OIWD) show care-resistant behavior for oral care. Providing care despite resistance is considered to be involuntary care. Although involuntary care should be minimized, in some OIWD it may be necessary to avoid health risks. This study aims to assess the attitudes of healthcare providers with regard to involuntary oral care provision for OIWD who show care-resistant behavior. An online questionnaire consisting of general questions and case specific questions was administered via social media and networking to individuals involved in the oral care of OIWD. A total of 309 participants were included in this study. The outcomes of the questionnaires were categorized per case. In all cases, a discrepancy was seen between the assessment of oral health problems as potentially harmful (range: 73.1-93.5%) and the willingness to provide involuntary care (range: 31.1-63.4%). Hence, many healthcare providers are aware of the subsequent potential health risks related to not providing care, but are still reluctant to provide involuntary oral care. Therefore, many OIWD who show care-resistant behavior potentially do not receive the necessary oral care they require.
Collapse
Affiliation(s)
- Maud Jonker
- Department of Gerodontology, Center for Dentistry and Oral Hygiene, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, The Netherlands
| | - Coos Engelsma
- Medical Ethics and Decision Making, Department of Ethics, Center for Dentistry and Oral Hygiene, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, The Netherlands
| | - David J. Manton
- Department of Cariology, Center for Dentistry and Oral Hygiene, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, The Netherlands
- Department of Paediatric Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), Vrije Universiteit Amsterdam and University of Amsterdam, 1081 LA Amsterdam, The Netherlands
| | - Anita Visser
- Department of Gerodontology, Center for Dentistry and Oral Hygiene, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, The Netherlands
- Department of Gerodontology, Faculty for Dentistry, Radboud University Medical Center, Radboud University Nijmegen, 6525 EX Nijmegen, The Netherlands
| |
Collapse
|
3
|
Osanto S, Alvarez C, Bloem H, van der Hulle T, Jonker M, Ozdemir M, Goossens K, Wijffelman M, Pelger R, Van Poppel H, Burggraaf K. Efficacy of enzalutamide in hormone-sensitive metastatic prostate cancer: Clinical utility of 18F-choline PET and whole body MRI. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz248.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
4
|
De Gussem V, Schuijt L, van den Brink P, van Dijk J, Jonker M, Kramer N, van Wezel A. Effect-directed monitoring tools as a toxicological fingerprint for ecological and human risk assessment of water bodies. Toxicol Lett 2018. [DOI: 10.1016/j.toxlet.2018.06.794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
5
|
Barranguet C, Jonker M, Sinke J, Admiraal W. Effects of acute copper contamination on photosynthesis and biomass of periphyton determined with pulse amplitude modulated fluorescence. ACTA ACUST UNITED AC 2017. [DOI: 10.1080/03680770.1998.11898268] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
6
|
Hamming-Vrieze O, Kraaijenga S, Verheijen S, Jonker M, Van der Molen L, Van de Kamer J, Van de Brekel M, Heemsbergen W. PO-0849: Trismus after chemoradiation in head & neck cancer: relation with medial pterygoid and masseter dose. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)31286-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
7
|
Serjeant GR, Serjeant BE, Mason KP, Gibson F, Gardner R, Warren L, Jonker M. Voluntary premarital screening to prevent sickle cell disease in Jamaica: does it work? J Community Genet 2017; 8:133-139. [PMID: 28251585 DOI: 10.1007/s12687-017-0294-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 01/17/2017] [Indexed: 02/04/2023] Open
Abstract
To determine whether identifying haemoglobin genotype, and providing education and counselling to senior school students will influence their choice of partner and reduce the frequency of births with sickle cell disease. The Manchester Project provided free voluntary blood tests to determine haemoglobin genotype to the fifth and sixth forms (grades 11-13), median age of 16.7 years, of all 15 secondary schools in the parish of Manchester in south central Jamaica. A total of 16,636 students complied, and counselling was offered to carriers of abnormal genes over 6 years (2008-2013). The genotypes of their offspring were determined by newborn screening of 66,892 deliveries in 12 regional hospitals over 8 years (2008-2015). The study focused on the genotypes of live deliveries to female students with the four most common haemoglobin genotypes: 7905 with an AA genotype, 898 with the sickle cell trait, 326 with the HbC trait and 78 with the beta thalassaemia trait. A total of 2442 live deliveries were identified by the end of 2015 in mothers screened at school. Eleven babies had clinically significant genotypes, and the prevalence of SS and SC disease did not differ from that predicted by random mating. First pregnancy was not delayed in AS or AC mothers. There was no evidence that knowledge of maternal haemoglobin genotype influenced choice of partner. On an interview, mothers of affected babies correctly recalled their genotype, but either did not discuss this with their partners or the latter refused to be tested. Subjects delaying child bearing for tertiary education would be largely excluded from the present study of first pregnancies and may make greater use of this information. Future options are a greater role for prenatal diagnosis.
Collapse
Affiliation(s)
- G R Serjeant
- Sickle Cell Trust (Jamaica), Southern Regional Health Authority, Mandeville, Jamaica.
- Sickle Cell Trust (Jamaica), 14 Milverton Crescent, Kingston 6, Jamaica, West Indies.
| | - B E Serjeant
- Sickle Cell Trust (Jamaica), Southern Regional Health Authority, Mandeville, Jamaica
- Sickle Cell Trust (Jamaica), 14 Milverton Crescent, Kingston 6, Jamaica, West Indies
| | - K P Mason
- Sickle Cell Trust (Jamaica), Southern Regional Health Authority, Mandeville, Jamaica
- Sickle Cell Trust (Jamaica), 14 Milverton Crescent, Kingston 6, Jamaica, West Indies
| | - F Gibson
- Sickle Cell Trust (Jamaica), Southern Regional Health Authority, Mandeville, Jamaica
| | - R Gardner
- Sickle Cell Trust (Jamaica), Southern Regional Health Authority, Mandeville, Jamaica
| | - L Warren
- Sickle Cell Trust (Jamaica), Southern Regional Health Authority, Mandeville, Jamaica
| | - M Jonker
- Department of Epidemiology and Biostatistics, VU University Medical Center, Amsterdam, The Netherlands
- Department Health Evidence, Radboud University Medical Center, Nijmegen, The Netherlands
| |
Collapse
|
8
|
Verheijen S, Hamming-Vrieze O, Jonker M, Lamers E, Kraaijenga S, Van der Molen L, Van de Kamer J, Van den Brekel M, Heemsbergen W. PO-0635: Dose to the masseter muscle and risk of trismus after chemoradiation for advanced head & neck cancer. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)31885-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
9
|
Kuijper T, Folmer H, Stolk E, Jonker M, Hazes J, Luime J. AB0430 Doctor's Preferences with Respect to Tapering of Disease Modifying Anti-Rheumatic Drugs: A Discrete Choice Experiment. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.5035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
10
|
Shephard G, Berthiller F, Burdaspal P, Crews C, Jonker M, Krska R, MacDonald S, Malone R, Maragos C, Sabino M, Solfrizzo M, Van Egmond H, Whitaker T. Developments in mycotoxin analysis: an update for 2010-2011. WORLD MYCOTOXIN J 2012. [DOI: 10.3920/wmj2011.1338] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
This review highlights developments in mycotoxin analysis and sampling over a period between mid-2010 and mid-2011. It covers the major mycotoxins: aflatoxins, Alternaria toxins, ergot alkaloids, fumonisins, ochratoxin, patulin, trichothecenes, and zearalenone. Analytical methods for mycotoxins continue to be developed and published. Despite much interest in immunochemical methods and in the rapid development of LC-MS methodology, more conventional methods, sometimes linked to novel clean-up protocols, have also been the subject of research publications over the above period. Occurrence of mycotoxins falls outside the main focus of this review; however, where relevant to analytical method development, this has been mentioned.
Collapse
Affiliation(s)
- G. Shephard
- PROMEC Unit, Medical Research Council, P.O. Box 19070, Tygerberg 7505, South Africa
| | - F. Berthiller
- Department for Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences Vienna, Center for Analytical Chemistry, Konrad Lorenz Str. 20, 3430 Tulln, Austria
| | - P. Burdaspal
- National Centre for Food, Spanish Food Safety and Nutrition Agency, Ctra. Pozuelo a Majadahonda km 5.100, 28220 Majadahonda (Madrid), Spain
| | - C. Crews
- The Food and Environment Research Agency, Sand Hutton, York YO41 1LZ, United Kingdom
| | - M. Jonker
- RIKILT Institute of Food Safety, Wageningen University and Research Centre, Cluster Natural Toxins and Pesticides, P.O. Box 230, 6700 AE Wageningen, the Netherlands
| | - R. Krska
- Department for Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences Vienna, Center for Analytical Chemistry, Konrad Lorenz Str. 20, 3430 Tulln, Austria
| | - S. MacDonald
- The Food and Environment Research Agency, Sand Hutton, York YO41 1LZ, United Kingdom
| | - R. Malone
- Trilogy Analytical Laboratory, 870 Vossbrink Drive, Washington, MO 63090, USA
| | - C. Maragos
- USDA, ARS National Center for Agricultural Utilization Research, 1815 N. University St., Peoria, IL 61604, USA
| | - M. Sabino
- Instituto Adolfo Lutz, Av. Dr Arnaldo 355, 01246-902, São Paulo/SP, Brazil
| | - M. Solfrizzo
- Institute of Sciences of Food Production, National Research Council, Via Amendola 122/o, 700126 Bari, Italy
| | - H. Van Egmond
- RIKILT Institute of Food Safety, Wageningen University and Research Centre, Cluster Natural Toxins and Pesticides, P.O. Box 230, 6700 AE Wageningen, the Netherlands
| | - T. Whitaker
- Biological and Agricultural Engineering Department, N.C. State University, P.O. Box 7625, Raleigh, NC 27695-7625 USA
| |
Collapse
|
11
|
Jonker H, Jansen W, Jonker M, Scholten A, Marijnen C. 483 poster POSITIONING IN BREAST RADIOTHERAPY; SMALLER SETUP ERRORS IN SUPINE COMPARED TO PRONE POSITIONING. Radiother Oncol 2011. [DOI: 10.1016/s0167-8140(11)70605-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
12
|
Shephard G, Berthiller F, Burdaspal P, Crews C, Jonker M, Krska R, MacDonald S, Malone B, Maragos C, Sabino M, Solfrizzo M, van Egmond H, Whitaker T. Developments in mycotoxin analysis: an update for 2009-2010. WORLD MYCOTOXIN J 2011. [DOI: 10.3920/wmj2010.1249] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
This review highlights developments in mycotoxin analysis and sampling over a period between mid-2009 and mid-2010. It covers the major mycotoxins aflatoxins, Alternaria toxins, ergot alkaloids, fumonisins, ochratoxin, patulin, trichothecenes, and zearalenone. New and improved methods for mycotoxins continue to be published. Immunological-based method developments continue to be of wide interest in a broad range of formats. Multimycotoxin determination by LC-MS/MS is now being targeted at the specific ranges of mycotoxins and matrices of interest or concern to the individual laboratory. Although falling outside the main emphasis of the review, some aspects of natural occurrence have been mentioned, especially if linked to novel method developments.
Collapse
Affiliation(s)
- G. Shephard
- PROMEC Unit, Medical Research Council, P.O. Box 19070, Tygerberg 7505, South Africa
| | - F. Berthiller
- Department for Agrobiotechnology (IFA-Tulln), University of Natural Resources and Applied Life Sciences Vienna, Center for Analytical Chemistry, Christian Doppler Laboratory for Mycotoxin Research, Konrad Lorenz Str. 20, 3430 Tulln, Austria
| | - P. Burdaspal
- National Centre for Food, Spanish Food Safety and Nutrition Agency, Carretera a Pozuelo Km 5.1, 28220 Majadahonda (Madrid), Spain
| | - C. Crews
- The Food and Environment Research Agency, Sand Hutton, York YO41 1LZ, United Kingdom
| | - M. Jonker
- RIKILT Institute of Food Safety, Cluster Natural Toxins & Pesticides, P.O. Box 230, 6700 AE Wageningen, The Netherlands
| | - R. Krska
- Department for Agrobiotechnology (IFA-Tulln), University of Natural Resources and Applied Life Sciences Vienna, Center for Analytical Chemistry, Christian Doppler Laboratory for Mycotoxin Research, Konrad Lorenz Str. 20, 3430 Tulln, Austria
| | - S. MacDonald
- The Food and Environment Research Agency, Sand Hutton, York YO41 1LZ, United Kingdom
| | - B. Malone
- Trilogy Analytical Laboratory, 870 Vossbrink Drive, Washington, MO 63090, USA
| | - C. Maragos
- USDA, ARS, National Center for Agricultural Utilization Research, 1815 N. University St, Peoria, IL 61604, USA
| | - M. Sabino
- Instituto Adolfo Lutz, Av Dr Arnaldo 355, 01246-902 São Paulo/SP, Brazil
| | - M. Solfrizzo
- Institute of Sciences of Food Production, National Research Council, Via Amendola 122/o, 70126 Bari, Italy
| | - H. van Egmond
- RIKILT Institute of Food Safety, Cluster Natural Toxins & Pesticides, P.O. Box 230, 6700 AE Wageningen, The Netherlands
| | - T. Whitaker
- Biological and Agricultural Engineering Department, N.C. State University, P.O. Box 7625, Raleigh, NC 27695-7625, USA
| |
Collapse
|
13
|
Haanstra KG, Endell J, Estévâo D, Kondova I, Jonker M. Blocking T cell co-stimulation using a CD80 blocking small molecule reduces delayed type hypersensitivity responses in rhesus monkeys. Clin Exp Immunol 2009; 158:91-8. [PMID: 19737235 DOI: 10.1111/j.1365-2249.2009.03994.x] [Citation(s) in RCA: 8] [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: 12/29/2022] Open
Abstract
Blockade of co-stimulation signals between T cells and antigen-presenting cells could be an important approach for treatment of autoimmune diseases and transplant rejection. Recently a series of small compound inhibitors which bind human CD80 (B7-1) and inhibit T cell co-stimulation has been described. To investigate their potency for clinical use, one of these compounds, RhuDex, was evaluated for reactivity with rhesus monkey CD80. The in vitro biological effect on rhesus monkey lymphocytes, the potency for suppression of an inflammatory recall response and the protein-induced delayed type hypersensitivity (DTH) response in the skin were studied. In a rhesus monkey T cell co-stimulation assay RhuDex inhibited proinflammatory cytokine release and cellular proliferation with micromolar potency. Systemic administration of RhuDex to rhesus monkeys inhibited the DTH response significantly, indicating that this compound may inhibit autoimmune mediated inflammatory processes where the target, CD80, is up-regulated.
Collapse
Affiliation(s)
- K G Haanstra
- Biomedical Primate Research Centre, Rijswijk, the Netherlands.
| | | | | | | | | |
Collapse
|
14
|
Haanstra KG, Wubben JAM, Korevaar SS, Kondova I, Baan CC, Jonker M. Expression patterns of regulatory T-cell markers in accepted and rejected nonhuman primate kidney allografts. Am J Transplant 2007; 7:2236-46. [PMID: 17845559 DOI: 10.1111/j.1600-6143.2007.01917.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [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: 01/25/2023]
Abstract
The identification of FOXP3 expressing cells in recipients of an allograft, in particular inside the graft itself, may help to define criteria for immunosuppressive drug withdrawal. We therefore examined expression patterns of several regulatory T-cell (Treg) markers in kidney biopsies and kidney tissues taken at the time of graft rejection from monkeys treated with alpha CD40, alpha CD86, CsA, a combination of these or after drug withdrawal. In advanced stages of rejection, organized multifocal nodular infiltrates, with mature dendritic cells, T cells and B cells could be found. In contrast, interstitial infiltrates contain more macrophages, less T cells and few B cells. Cells expressing FOXP3, CD25 and CTLA-4 were mainly found in nodular infiltrates of rejected tissue samples. A significant correlation was found between the percentage FOXP3(+) cells and markers for rejection, i.e. creatinine levels and Banff interstitial and tubular infiltrate scores. The type of immunosuppression did not influence the percentage of cells expressing Treg markers. Three animals with prolonged drug-free survival showed low numbers of FOXP3(+) cells. We conclude that the presence of intragraft FOXP3(+) cells is not confined to tolerated grafts, but should be considered as part of the normal immune response during rejection.
Collapse
Affiliation(s)
- K G Haanstra
- Biomedical Primate Research Centre, Rijswijk, The Netherlands.
| | | | | | | | | | | |
Collapse
|
15
|
Schielen PCJI, van Leeuwen-Spruijt M, Belmouden I, Elvers LH, Jonker M, Loeber JG. Multi-centre first-trimester screening for Down syndrome in the Netherlands in routine clinical practice. Prenat Diagn 2006; 26:711-8. [PMID: 16752435 DOI: 10.1002/pd.1486] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [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: 11/10/2022]
Abstract
OBJECTIVES This is the first report on the results of a first-trimester combined-test screening programme in the Netherlands in a multi-centre routine clinical setting. METHODS Between July 2002 and May 2004, blood samples were taken from subjects in 44 centres in the Netherlands and sent to our laboratory to assay for maternal serum concentrations of fbeta-hCG and PAPP-A. Fetal nuchal translucency (NT) was measured in the participating centres at a gestational age (GA) of 10-14 weeks. Results of those pregnancies for which a combined biochemical and NT risk was calculated were included in the epidemiological analysis of this study. RESULTS A total of 4033 singleton pregnancies were included in the analysis. The median maternal age of the analysed group was 36.5 years. The distribution of GA was biphasic, with median GA of 10.3 and 12.1 weeks, respectively. The detection rate using the combined ultrasound and serum screening at a cut-off level of 1 in 250 was 71% (15/21), with a screen-positive rate of 4.7%. CONCLUSION The results of this study show that the first-trimester combined test is suitable as a prenatal screening test in a multi-centre routine clinical setting in the Netherlands. Strict performance evaluation should identify weaknesses in the organisation that impair the performance of the test. Here, the performance of NT was especially identified as a candidate for improvement.
Collapse
Affiliation(s)
- P C J I Schielen
- Diagnostic Laboratory for Infectious Diseases and Perinatal Screening, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands.
| | | | | | | | | | | |
Collapse
|
16
|
Haanstra K, Sick E, Vierboom M, Boon L, Jonker M. ATG PRE-TREATMENT INTERFERES WITH COSTIMULATION BLOCKADE IN A MONKEY KIDNEY ALLOGRAFT MODEL BY PREVENTING TREG DEVELOPMENT. Transplantation 2004. [DOI: 10.1097/00007890-200407271-00195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
17
|
Haegel-Kronenberger H, Haanstra K, Ziller-Remy C, Ortiz Buijsse AP, Vermeiren J, Stoeckel F, Van Gool SW, Ceuppens JL, Mehtali M, De Boer M, Jonker M, Boon L. Inhibition of costimulation allows for repeated systemic administration of adenoviral vector in rhesus monkeys. Gene Ther 2004; 11:241-52. [PMID: 14737083 DOI: 10.1038/sj.gt.3302152] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [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: 11/08/2022]
Abstract
Immunogenicity of recombinant adenoviral (Ad) vectors severely hampers the clinical development of gene therapy protocols using repeated vector administrations. Inhibition of costimulation by APCs was explored as a strategy to circumvent the immune response against Ad particles. This strategy was tested in rhesus monkeys, treated transiently with chimeric anti-human CD40 and anti-human CD86 antagonist monoclonal antibodies (MAbs) at the time of systemic administration of a recombinant Ad vector. After Ad vector administration in the absence of immunosuppressive treatment, transgene expression in the serum lasted about 3-4 weeks. All control animals developed a strong neutralizing antibody (NAb) response to the Ad particles, which totally prevented efficient administration of a second vector, as shown by the lack of transgene expression. Treatment with anti-CD40 and anti-CD86 chimeric MAbs delayed or blocked the development of a humoral response against Ad and the infiltration of CD8(+) lymphocytes into the liver. This resulted in (i) increased persistence of Ad-transduced cells after injection of a first vector encoding a nonimmunogenic transgene, and (ii) the possibility of readministering a second Ad vector with significant efficacy. In both respects, the combined blockade of CD40 and CD86 was more efficient than treatment with anti-CD40 alone. This study shows for the first time in non-human primates that blocking CD40 and CD86 costimulatory molecules represents a promising strategy to inhibit immune responses against an Ad vector injected systemically.
Collapse
|
18
|
Stevens HP, Holterman L, Haaksma AG, Jonker M, Heeney JL. Lymphoproliferative disorders developing after transplantation and their relation to simian T-cell leukemia virus infection. Transpl Int 2003; 5 Suppl 1:S450-3. [PMID: 14621843 DOI: 10.1007/978-3-642-77423-2_131] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [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: 02/20/2023]
Abstract
In this report the role of the HTLV-1-like simian T-cell leukemia virus (STLV) during the development of posttransplantation lymphoproliferative disorders (PTLPD) is described. To prevent rejection of an allogeneic transplant in 12 rhesus monkeys cyclosporin A (CyA), prednisone, and/or lymphocyte-specific monoclonal antibodies were used for immunosuppression. Seven monkeys died during the experiment between 22 and 179 days postoperatively. At autopsy in 4 monkeys PTLPD were found. In each case, STLV provirus was acquired during the experiment, either from the blood transfusions or allograft donors. Seroconversion of anti-STLV titers occurred in 3 monkeys. However, Southern blot analysis showed the presence of STLV provirus at the DNA level in all PTLP tissues. PTLPD morphology and phenotype varied significantly. In conclusion, for the first time the oncogenic potential of STLV is identified in a rhesus monkey transplantation model. Moreover, the importance of screening blood and organ donors for HTLV-1 must be emphasized.
Collapse
Affiliation(s)
- H P Stevens
- Department of Plastic and Reconstructive Surgery, University Hospital Dijkzigt, Rotterdam, The Netherlands
| | | | | | | | | |
Collapse
|
19
|
Ringers J, Haanstra KG, Kroczek RA, Kliem K, Kuhn EM, Wubben J, Ossevoort MA, Volk HD, Jonker M, Thomas FT, Thomas JM. The preclinical model of choice. Transplantation 2002. [DOI: 10.1097/00007890-200203270-00001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
20
|
Verbakel CA, de Bruin RW, Bonthuis F, Jonker M, Dekker S, Marquet RL, IJzermans JN. Contrast in the efficacy of hDAF mouse hearts between ex vivo perfusion and transplantation into primates. Xenotransplantation 2001; 8:284-91. [PMID: 11737854 DOI: 10.1034/j.1399-3089.2001.00132.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
In recent experiments, in which we compared hDAF transgenic rat hearts perfused with 15% human serum in the Langendorff device and hDAF rat hearts transplanted into cynomolgus monkeys, we demonstrated that in the ex vivo heart perfusion model both homozygous and heterozygous hDAF hearts survived longer as nontransgenic controls. Surprisingly, we found that only homozygous hDAF hearts were protected against hyperacute rejection in vivo. The first aim of this study was to determine whether perfusion of mouse hearts with higher human serum concentrations or human blood might explain some of the differences found in survival time of the recently performed experiments with rat heart xenografts. Secondly, we investigated whether the observed differences in survival times of rat xenografts between in vivo and ex vivo transplantation would also hold for mouse hearts transgenic for hDAF. An ex vivo model was used to perfuse hDAF mouse hearts and controls with human serum or blood, and hDAF transgenic hearts and controls were transplanted into cynomolgus monkeys. hDAF transgenic mouse hearts survived significantly longer than their controls when perfused with 15% human serum, but no difference was found when 30% human serum was used, or when these hearts were transplanted into cynomolgus monkeys. However, in both the in vivo and ex vivo models the amount of PMNs adhering to the vascular endothelium was significantly lower in hDAF transgenes as compared with their controls. In conclusion, in the ex vivo situation, the efficacy of hDAF transgenesis in preventing HAR is limited by serum complement concentration.
Collapse
Affiliation(s)
- C A Verbakel
- Laboratory for Experimental Surgery & Oncology, Erasmus University Medical Center Rotterdam, Room Ee 102c, PO Box 1738, 3000 DR, Rotterdam, The Netherlands.
| | | | | | | | | | | | | |
Collapse
|
21
|
Jonker M, van den Hout Y, Noort RC, Versteeg-van der Voort Maarschalk MF, Claas FH, Woude FJ, Hollander D, Perico N, Remuzzi G. Immunomodulation by intrathymic injection of donor leukocytes in rhesus monkeys. Transplantation 2001; 72:1432-6. [PMID: 11685116 DOI: 10.1097/00007890-200110270-00017] [Citation(s) in RCA: 7] [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: 11/26/2022]
Abstract
BACKGROUND Several studies have demonstrated that intrathymic injection of donor cells into adult rodents can result in long-term allograft survival. The rationale for using the intrathymic route of donor cell administration is that in the thymic environment immature T cells are educated to discriminate between self and non-self antigens. The validity of this approach was tested in non-human primates. METHODS The effect of the intrathymic injection of allogeneic donor cells was investigated in rhesus monkeys and compared with IV and intracutaneous administration of donor cells. Intrathymic injections were carried out without and with antithymocyte globulin. All animals received subsequently an allogeneic skin graft of the same donor and no immunosuppression post transplantation. RESULTS Skin graft survival was slightly shorter in animals treated with IC donor cell injections (mean survival time [MST]=8.9+/-0.52) than untreated control animals (MST=10.0+/-0.44), indicating that this route caused sensitisation. Intravenous donor cell injection showed prolongation of graft survival times (MST=11.6+/-1.69). Intrathymic donor cell injection resulted in a graft survival of 9.2+/-1.44 days although addition of antithymocyte globulin slightly prolonged graft survival to 10.3+/-2.84 (not significant). Whereas the cellular responses after intrathymic and intravenous donor cell injections increased, antithymocyte globulin treated animals did not show an increased cellular response. Recipients of intrathymic donor cells showed a significantly decreased humoral anti-donor response as compared to other groups. CONCLUSIONS Donor cell pretreatment alters the subsequent response to an allogeneic skin graft in monkeys and is dependent on the route of donor cell administration. This is also reflected in the alloantibody response and the in vitro cellular reactivity. Intrathymic administration of donor cells does not lead to prolonged skin graft acceptance.
Collapse
Affiliation(s)
- M Jonker
- Biomedical Primate Research Centre, Department of Immunobiology, Rijswijk, The Netherlands
| | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Prévill X, Sick E, Beauchard S, Ossevoort M, Tiollier J, Revillard JP, Jonker M. 6-Methylprednisolone does not impair anti-thymocyte globulin (ATG) immunosuppressive activity in non-human primates. Transpl Immunol 2001; 9:57-61. [PMID: 11680573 DOI: 10.1016/s0966-3274(01)00039-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
BACKGROUND Induction treatments with anti-thymocyte globulin (ATG) in solid organ transplantation may enhance the efficacy of maintenance immunosuppressive therapy. Since ATG can trigger Fas (CD95) mediated T cell apoptosis, a process antagonized in vitro by corticosteroids, an important issue is whether corticosteroids could interfere with T cell depleting and immunosuppressive activities of ATG. METHODS MHC mismatched skin allografts were performed on cynomolgus and rhesus monkeys treated with ATG (20 mg/kg) associated or not with 6-methylprednisolone (10 mg/kg). RESULTS There was no difference between the two immunosuppressive regimens as regards the intensity and duration of peripheral T lymphocyte depletion and the appearance of anti-ATG antibodies. Skin graft survival was increased in monkeys treated with 6-methylprednisolone as compared with ATG alone. CONCLUSIONS In vivo, corticosteroids do not interfere with ATG ability to induce massive T cell depletion and to delay skin allograft rejection in non-human primates.
Collapse
|
23
|
Abstract
The phylogenetic proximity between non-human primate species and humans is reflected by a high degree of immunological similarity. Non-human primates therefore provide important experimental models for disorders in the human population that are caused by the immune system, such as autoimmune diseases. In this paper we describe non-human primate models of multiple sclerosis, a chronic inflammatory and demyelinating disease of the human central nervous system. While reviewing data from the literature and our own research we will discuss the unique role of such models in the research of basic disease mechanisms and the development of new therapies.
Collapse
Affiliation(s)
- H P Brok
- Dept. of Immunobiology, Biomedical Primate Research Centre, The Netherlands
| | | | | | | | | | | | | | | |
Collapse
|
24
|
Schuurman HJ, Slingerland W, Mennninger K, Ossevoort M, Hengy JC, Dorobek B, Vonderscher J, Ringers J, Odeh M, Jonker M. Pharmacokinetics of cyclosporine in monkeys after oral and intramuscular administration: relation to efficacy in kidney allografting. Transpl Int 2001; 14:320-8. [PMID: 11692216 DOI: 10.1007/s001470100336] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [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: 11/30/2022]
Abstract
In cynomolgus and rhesus monkeys, the dose-normalized exposure of cyclosporine administered orally as microemulsion preconcentrate (Neoral) was lower than that upon intramuscular administration. For oral administration, mean values ( +/- SD) of Cmax, 24-h area-under-the curve (AUC) and 24-h trough level, all normalized for a 1 mg/kg dose, were 20 +/- 9 ng x kg/mg x ml, 210 +/- 70 ng x h x kg/mg x ml and 2.6 +/- 0.9 ng x kg/mg x ml, respectively. For intramuscular administration, levels were about 5.5-fold, 9-fold and 22-fold higher. Based on pharmacokinetic data, the efficacy of oral cyclosporine treatment (without any other immunosuppressant) was evaluated in life-supporting cynomolgus monkey kidney allotransplantation. Rejection-free kidney allograft survival could be achieved using oral cyclosporine monotherapy with average 24-h trough concentrations above 100 ng/ml during maintenance treatment. Typically, daily oral doses of 100 mg/kg-150 mg/kg during the first two weeks post-transplantation, followed by daily 30 mg/kg-100 mg/kg dose levels during subsequent maintenance can result in long-term allograft survival, with 24-h average trough levels in individual animals during maintenance between 110 ng/ml and 700 ng/ml.
Collapse
Affiliation(s)
- H J Schuurman
- Transplantation Research, Novartis Pharma AG, 4002 Basel, Switzerland.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
25
|
Schuurman HJ, Mennninger K, Odeh M, Slingerland W, Ossevoort M, Jonker M, Hengy JC, Dorobek B, Vonderscher J, Ringers J, Schuurman HJ. Pharmacokinetics of cyclosporine in monkeys after oral and intramuscular administration: relation to efficacy in kidney allografting. Transpl Int 2001. [DOI: 10.1111/j.1432-2277.2001.tb00066.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
26
|
Ringers J, Ossevoort M, Haanstra K, Kroczek R, Volk D, Jonker M. Blockade of CD154 at the time of donor-specific blood transfusion does not improve kidney graft survival in rhesus monkeys. Transplant Proc 2001; 33:524. [PMID: 11266938 DOI: 10.1016/s0041-1345(00)02122-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- J Ringers
- Department of Surgery, LUMC, Leiden, The Netherlands
| | | | | | | | | | | |
Collapse
|
27
|
Jonker M, Rijkelijkhuizen JK, Haanstra KG, Kuhn EM, Ringers J, Bouwman E. T-cell-directed immunosuppression allows prolonged survival of xenogeneic pig islets in monkeys. Transplant Proc 2001; 33:726. [PMID: 11267041 DOI: 10.1016/s0041-1345(00)02225-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- M Jonker
- Biomedical Primate Research Centre, Rijswijk, The Netherlands
| | | | | | | | | | | |
Collapse
|
28
|
Rijkelijkhuizen JK, Bouwman E, van der Burg MP, Ringers J, Ossevoort MA, Kuhn EM, Frost P, Jonker M. Successful suppression of the early rejection of pig islets in monkeys. Cell Transplant 2000; 9:909-12. [PMID: 11202577 DOI: 10.1177/096368970000900618] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [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: 11/17/2022] Open
Abstract
Primary nonfunction (PNF) is seen very frequently after xenogeneic transplantation of islets of Langerhans. In a pig-to-rat model we recently observed that no PNF occurs when the islets are kept in culture at 37 degrees C for 1-2 weeks prior to transplantation. In order to investigate the rejection mechanisms in a preclinical model, we transplanted cultured porcine islets under the capsule of both kidneys in four cynomolgous monkeys. Islets were isolated from adult sows by means of digestion with Liberase in University of Wisconsin solution (UWS). The digest was purified by a density gradient of OptiPrep in UWS. Highly purified (>95%) islets were cultured 1-2 weeks in RPMI. All monkeys showed significant titers of preformed anti-pig antibodies. The immunosuppression of the monkeys consisted of cyclophosphamide (Cy) (2 days), cyclosporin A (CsA), and prednisolone. Anticipating a fast rejection we carried out nephrectomies at different time points within 2 weeks after transplantation. Following unilateral nephrectomy, well-preserved islets with no signs of rejection were observed between 3 and 7 days posttransplant. Later, between days 11 and 15 posttransplant, histology in the first three animals demonstrated no islets. In the fourth monkey histology on day 11 showed islets with excellent morphology and some small focal infiltrates. The highest CsA blood levels (around 1000 ng/ml) were found in animals with the best graft survival. We conclude that cultured porcine islets can be grafted without hyperacute rejection in monkeys with preformed anti-pig antibodies. In the presence of high levels of CsA only marginal signs of a cellular immune response were observed 11 days after transplantation.
Collapse
|
29
|
Rijkelijkhuizen JK, Ossevoort M, Ringers J, van der Burg MP, Kuhn EM, Wubben J, Haanstra K, Bouwman E, Jonker M. Xenografting of pig islets in monkeys does not result in hyperacute rejection. Transplant Proc 2000; 32:1064. [PMID: 10936356 DOI: 10.1016/s0041-1345(00)01122-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
30
|
Schuurman HJ, Ringers J, Schuler W, Slingerland W, Jonker M. Oral efficacy of the macrolide immunosuppressant SDZ RAD and of cyclosporine microemulsion in cynomolgus monkey kidney allotransplantation. Transplantation 2000; 69:737-42. [PMID: 10755519 DOI: 10.1097/00007890-200003150-00011] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.1] [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: 11/27/2022]
Abstract
BACKGROUND 40-O-(2-Hydroxyethyl)-rapamycin (SDZ RAD) is a novel, potent, macrolide immunosuppressant. Its efficacy in rodent transplantation models provided the rationale for us to evaluate the compound in a more relevant, large animal transplantation model. METHODS Life-supporting kidney allotransplantation was performed in cynomolgus monkeys: rejection was inferred from a rise in serum creatinine or urea and was subsequently confirmed by histopathology. This model was validated with the microemulsion formulation of cyclosporine (i.e., Neoral). Two studies with a microemulsion formulation of SDZ RAD were performed. First, in a dose-finding study, the SDZ RAD dose was reduced in a stepwise fashion until rejection occurred, either with SDZ RAD as monotherapy, or in combination with a fixed, suboptimal dose of cyclosporine. Second, an efficacy study was performed in which two fixed SDZ RAD doses (0.75 and 1.50 mg/kg/ day) were evaluated in monotherapy and compared with the same doses of rapamycin (sirolimus). All immunosuppressants were administered once daily by gastric gavage. RESULTS Untreated control animals rejected their grafts between 4 and 8 days after transplantation. Cyclosporine (initially at 150 mg/kg/day, reduced to 100 mg/kg/day 2 weeks after transplantation) yielded long-term (>100 days) rejection-free allograft survival in four of five animals. A 10 mg/kg/day dose of cyclosporine led to rejection between 10 and 27 days after transplantation and was considered suboptimal. In the dose-finding study with SDZ RAD monotherapy, rejection occurred in most of the cases (four of six animals) when a dose level of 0.63 mg/kg/day had been reached. Combined with suboptimal cyclosporine, this threshold SDZ RAD dose was about 2-fold lower. In the efficacy study, median graft survival with histologically proven rejection was 32 days (range 8-91 days, n=6) for 0.75 mg(kg/day SDZ RAD and 59 days (range 28-85 days, n=6) for 1.50 mg/kg/day SDZ RAD. For sirolimus, median graft survival was 43 days (range 5-103 days, n=7) for the 0.75 mg/kg/day dose and 56 days (range 8-103 days, n=8) for the 1.50 mg/kg/day dose. There was no statistically significant difference in efficacy between SDZ RAD and sirolimus. CONCLUSION SDZ RAD, in the absence of any other immunosuppressant and at doses that do not show any overt toxicity, considerably prolongs rejection-free survival of cynomolgus monkeys after life-supporting kidney allotransplantation.
Collapse
Affiliation(s)
- H J Schuurman
- Transplantation Research, Novartis Pharma AG, Basel, Switzerland
| | | | | | | | | |
Collapse
|
31
|
Ossevoort MA, Ringers J, Kuhn EM, Boon L, Lorré K, van den Hout Y, Bruijn JA, de Boer M, Jonker M, de Waele P. Prevention of renal allograft rejection in primates by blocking the B7/CD28 pathway. Transplantation 1999; 68:1010-8. [PMID: 10532543 DOI: 10.1097/00007890-199910150-00019] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
BACKGROUND There is accumulating evidence that blockade of the costimulatory pathways offers a valid approach for immune suppression after solid organ transplantation. In this study, the efficacy of anti-CD80 and anti-CD86 monoclonal antibodies (mAbs) in combination with cyclosporine (CsA) to prevent renal allograft rejection was tested in non-human primates. METHODS Rhesus monkeys were transplanted with a partly major histocompatibility complex-matched kidney on day 0. Anti-CD80 and anti-CD86 mAbs were administered intravenously daily for 14 days starting at day - 1. CsA was given intramuscularly for 35 days starting just after transplantation. The kidney function was monitored by determining serum creatinine levels. RESULTS The combination of anti-CD80 and anti-CD86 mAbs completely abrogated the mixed lymphocyte reaction. Untreated rhesus monkeys rejected the kidney allograft in 5-7 days. Treatment with anti-CD80 plus anti-CD86 mAbs resulted in a significantly prolonged graft survival of 28+ 7 days (P=0.025). There were no clinical signs of side effects or rejection during treatment. Kidney graft rejection started after the antibody therapy was stopped. The anti-mouse antibody response was delayed from day 10 to 30 after the first injection. No difference in graft survival was observed between animals treated with CsA alone or in combination with anti-CD80 and anti-CD86 mAbs. However, treatment with anti-CD80 and anti-CD86 mAbs reduced development of vascular rejection. CONCLUSIONS In combination, anti-CD80 and antiCD86 mAbs abrogate T-cell proliferation in vitro, delay the anti-mouse antibody response in vivo, and prevent graft rejection and development of graft vascular disease in a preclinical vascularized transplant model in non-human primates.
Collapse
Affiliation(s)
- M A Ossevoort
- Department of Immunobiology, Biomedical Primate Research Centre, Rijswijk, The Netherlands
| | | | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Ossevoort MA, Lorré K, Boon L, van den Hout Y, de Boer M, De Waele P, Jonker M, VandeVoorde A. Prolonged skin graft survival by administration of anti-CD80 monoclonal antibody with cyclosporin A. J Immunother 1999; 22:381-9. [PMID: 10546153 DOI: 10.1097/00002371-199909000-00001] [Citation(s) in RCA: 20] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Costimulation via the B7/CD28 pathway is an important signal for the activation of T cells. Maximal inhibition of T-cell activation and the induction of alloantigen-specific nonresponsiveness in vitro was achieved using anti-CD80 monoclonal antibody (mAb) in combination with cyclosporin A (CsA). Based on this knowledge, the efficacy of the prophylactic treatment of anti-CD80 mAb and CsA on allogeneic skin graft survival was tested in a preclinical rhesus monkey model. No side effects have been observed. Administration of anti-CD80 mAb resulted in high mAb serum levels that decreased to undetectable values around day 7. At the same time, the anti-mouse antibody response started to develop. The anti-CD80 mAb bound to peripheral blood mononuclear cells and was detectable in lymph node and grafted skin during the treatment period. The skin graft survival time of untreated or suboptimally CsA-treated rhesus monkeys was 10 days. Treatment with CsA (blood levels of 100-160 ng/ml) in combination with anti-CD80 mAb (0.5 mg/kg) resulted in a significantly increased skin graft survival time to 14 days. Eventually, skin grafts in all rhesus monkeys were rejected, which coincided with an increase in helper and cytotoxic T-cell frequency and induction of an antibody response directed against the donor antigens. Therefore, treatment of anti-CD80 mAb in combination with CsA has significant immunosuppressive potency, but was unable to induce donor-specific nonresponsiveness in skin graft recipients.
Collapse
Affiliation(s)
- M A Ossevoort
- Department of Immunobiology, Biomedical Primate Research Centre, Rijswijk, The Netherlands
| | | | | | | | | | | | | | | |
Collapse
|
33
|
Abstract
OBJECTIVE To determine whether interferon beta (IFN-beta) therapy might have a beneficial effect on arthritis, we evaluated the effect of IFN-beta on collagen type II-induced arthritis (CIA) in rhesus monkeys and conducted a pilot study in patients with rheumatoid arthritis (RA). METHODS Four rhesus monkeys with CIA were treated with 10 x 10(6) U (MIU)/kg mammalian cell-derived recombinant IFN-beta (Rebif; Ares-Serono) s.c. daily for 1 week. Subsequently, 12 patients with active RA were treated for 12 weeks with purified natural fibroblast IFN-beta (Frone, Ares-Serono) s.c. 3 times weekly at the following dosages: 6 MIU (n = 4), 12 MIU (n = 4) and 18 MIU (n = 4). RESULTS Rapid clinical improvement during IFN-beta therapy was observed in three of the four rhesus monkeys with CIA. There was also a marked decrease in serum C-reactive protein (CRP) levels with a subsequent increase after discontinuation of the treatment in all monkeys. The 10 RA patients who completed the study exhibited on average gradual improvement of tender and swollen joint counts, patient's assessment of pain, and patient's and doctor's global assessment (all P < 0.05). The health assessment questionnaire and serum CRP levels also tended to decrease, but this was not statistically significant; 40% of the patients fulfilled the ACR criteria for 20%, improvement, whereas none fulfilled the ACR criteria for 50% improvement 12 weeks after initiation of treatment. There was no clear dose response relationship. CONCLUSION The data suggest that IFN-beta treatment has a beneficial effect on arthritis.
Collapse
Affiliation(s)
- P P Tak
- Department of Rheumatology, Leiden University Medical Centre, The Netherlands
| | | | | | | | | | | |
Collapse
|
34
|
Stuijfzand SC, Engels S, van Ammelrooy E, Jonker M. Caddisflies (Trichoptera: Hydropsychidae) used for evaluating water quality of large European rivers. Arch Environ Contam Toxicol 1999; 36:186-192. [PMID: 9888964 DOI: 10.1007/s002449900459] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
In many European rivers, biodiversity has declined dramatically, and especially riverine insects have disappeared during the past decades. It remains unclear whether poor water quality or deteriorated habitats are limiting the distribution of sensitive aquatic insects in these rivers. The aim of this study, therefore, was to find out if water quality alone is limiting the distribution of these insects in rivers that have suffered from anthropogenic disturbances. To this purpose, caddisflies of the genus Hydropsyche, which are representative riverine insect species, were incubated in two large European rivers, the Rhine and the Meuse. Survival of caddisflies in the River Rhine was fairly high, while there was almost no survival in the River Meuse in three out of five field experiments. The incubations of Hydropsyche in the River Meuse provide evidence that even adequate structural habitat would be insufficient for the reestablishment of Hydropsyche species. The factors limiting the distribution of Hydropsyche species change with the changing constitution of the water; there is not one (group of) compound(s) responsible for the poor water quality. Besides chemical factors, physical factors (like oxygen and current velocity) may be limiting in the River Meuse for Hydropsyche species.
Collapse
Affiliation(s)
- S C Stuijfzand
- Department of Aquatic Ecology and Ecotoxicology, ARISE, University of Amsterdam, Kruislaan 320, 1098 SM Amsterdam, The Netherlands
| | | | | | | |
Collapse
|
35
|
Jonker M, van de Hout Y, Neuhaus P, Ringers J, Kuhn EM, Bruijn JA, Noort R, Doxiadis G, Otting N, Bontrop RE, Claas FH, van Rood JJ. Complete withdrawal of immunosuppression in kidney allograft recipients: a prospective study in rhesus monkeys. Transplantation 1998; 66:925-7. [PMID: 9798705 DOI: 10.1097/00007890-199810150-00019] [Citation(s) in RCA: 18] [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] [Indexed: 11/26/2022]
Abstract
BACKGROUND We previously reported the successful withdrawal of immunosuppression in kidney-allografted rhesus monkeys. Recipients had received pretransplant blood transfusions and cyclosporine (CsA) immunosuppression for 6 to 12 months. One animal is still alive at more than 15 years after transplantation. Our hypothesis was that the sharing of a single DR antigen between blood donor and recipient, and the sharing of the same DR antigen with the kidney donor, may be beneficial to allograft survival. We now report on the results from a prospective study. METHODS The animals received three pretransplant blood transfusions from a single donor sharing one DR antigen with the recipient. Subsequently, a life-supporting kidney from a donor sharing the same DR antigen was transplanted. CsA was given for at least 6 months after transplantation. RESULTS Two animals rejected their graft at 5-8 weeks after cessation of CsA treatment. One animal is still alive at 700 days after transplantation. This animal showed MLR nonreactivity to its kidney donor, similar to the animal at more than 15 years after transplantation. CONCLUSION These results demonstrate that withdrawal of immunosuppression may be a realistic option in kidney graft patients under careful immunological monitoring of donor-specific immunity.
Collapse
Affiliation(s)
- M Jonker
- Department of Immunobiology, Biomedical Primate Research Centre, Rijswijk, The Netherlands
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Affiliation(s)
- H J Schuurman
- Department of Transplantation Research, Novartis Pharma AG, Basel, Switzerland
| | | | | | | |
Collapse
|
37
|
Ossevoort MA, Ringers J, Boon L, Lorré K, van den Hout Y, Kuhn EM, de Boer M, Jonker M, de Waele P. Blocking of costimulation prevents kidney graft rejection in rhesus monkeys. Transplant Proc 1998; 30:2165-6. [PMID: 9723429 DOI: 10.1016/s0041-1345(98)00576-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- M A Ossevoort
- Biomedical Primate Research Centre, Rijswijk, The Netherlands
| | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Abstract
OBJECTIVE It has been hypothesized that asymptomatic synovitis may precede clinical manifestations of arthritis in the earliest phase of rheumatoid arthritis (RA). To obtain more insight into this disease phase, we investigated the immunohistologic features of synovial tissue (ST) from the knee joints of rhesus monkeys with induced arthritis and from RA patients with both clinically involved and clinically uninvolved knee joints. METHODS Serial ST biopsy specimens from the knee joints of 4 rhesus monkeys that had been immunized with type II collagen and ST from 10 RA patients were investigated. Eight patients without inflammatory joint disease served as controls. RESULTS In ST from immunized monkeys, an influx of macrophages was observed well before the occurrence of arthritis. Signs of inflammation were also demonstrated in ST from clinically uninvolved knee joints of all RA patients evaluated. The ST was characterized in particular by infiltration with macrophages and by the expression of macrophage-derived cytokines. CONCLUSION The findings support the view that asymptomatic synovitis precedes clinically manifest arthritis in both early and established RA. This implies that the debut of RA already represents a chronic phase of the disease.
Collapse
Affiliation(s)
- M C Kraan
- Leiden University Medical Center, The Netherlands
| | | | | | | | | | | | | | | |
Collapse
|
39
|
Jonker M, Slingerland W, Ossevoort M, Kuhn E, Neville D, Friend P, Calne R. Induction of kidney graft acceptance by creating a window of opportunity for immunologic engagement (WOFIE) in rhesus monkeys. Transplant Proc 1998; 30:2441-3. [PMID: 9723530 DOI: 10.1016/s0041-1345(98)00679-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- M Jonker
- Biomedical Primate Research Centre, Rijswijk, The Netherlands
| | | | | | | | | | | | | |
Collapse
|
40
|
Jonker M, van den Hout Y, Neuhaus P, Ringers J, Kuhn EM, Bruijn JA, Schuurman HJ, Noort R, Bontrop RE, Claas FH, van Rood JJ. Complete withdrawal of immunosuppression in kidney allograft recipients: a prospective study in rhesus monkeys. Transplant Proc 1998; 30:2451-3. [PMID: 9723534 DOI: 10.1016/s0041-1345(98)00683-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- M Jonker
- Biomedical Primate Research Centre, Rijswijk, The Netherlands
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
41
|
Ossevoort MA, de Boer M, Lorré K, Van de Voorde A, Jonker M. Blocking of costimulatory pathways using monoclonal antibodies as a new strategy to prevent transplant rejection in a non-human primate model. Transplant Proc 1998; 30:1061-2. [PMID: 9636429 DOI: 10.1016/s0041-1345(98)00151-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- M A Ossevoort
- Biomedical Primate Research Centre, Rijswijk, The Netherlands
| | | | | | | | | |
Collapse
|
42
|
Doxiadis GG, Otting N, Antunes SG, de Groot NG, Harvey M, Doxiadis II, Jonker M, Bontrop RE. Characterization of the ABO blood group genes in macaques: evidence for convergent evolution. Tissue Antigens 1998; 51:321-6. [PMID: 9583803 DOI: 10.1111/j.1399-0039.1998.tb02970.x] [Citation(s) in RCA: 20] [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] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The ABO blood group system is known to act as a major transplantation barrier in primates. Different primate species share the presence of A and B antigens. The polymorphism of the macaque ABO blood group genes was analyzed by cloning and sequencing the exon 7 region. In the case of the rhesus macaque (Macaca mulatta) and cynomolgus monkey (Macaca fascicularis) we were able to identify ABO blood group gene segments which cluster into two lineages, namely: *A/*O1 and *B. In addition allelic variation was observed. The 2 amino acid replacements at positions 266 and 268, which are thought to be crucial for A or B transferase activity, could be confirmed for both macaque species. Comparison of primate sequences shows that A and B reactivity was generated independently from each other in the hominoids and Old World monkey lineages. Hence, the primate A and B blood group genes are subject to convergent evolution.
Collapse
Affiliation(s)
- G G Doxiadis
- Department of Immunobiology BPRC, Rijswijk, The Netherlands.
| | | | | | | | | | | | | | | |
Collapse
|
43
|
Hart BA, Bank RA, De Roos JA, Brok H, Jonker M, Theuns HM, Hakimi J, Te Koppele JM. Collagen-induced arthritis in rhesus monkeys: evaluation of markers for inflammation and joint degradation. Br J Rheumatol 1998; 37:314-23. [PMID: 9566674 DOI: 10.1093/rheumatology/37.3.314] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The objective of this study was to analyse parameters in rhesus monkey collagen-induced arthritis (CIA) with which the inflammation and destruction of the joints can be described in quantitative terms. CIA was induced in genetically susceptible and resistant monkeys, which can be distinguished on the basis of the dominant resistance marker Mamu-A26. The disease course was monitored daily using a semiquantitative scoring system. Plasma samples were collected once or twice weekly and analysed for C-reactive protein (CRP). Urines were collected overnight once a week and analysed for excretion rates of the collagen cross-links hydroxylysylpyridinoline (HP) and lysylpyridinoline (LP). The results show that periods of active CIA are characterized by substantial weight loss and increased plasma CRP levels, followed shortly thereafter by increased excretion rates of the collagen cross-links HP and LP. Remission of the disease can be recognized by a decline in plasma CRP levels and especially an increase in body weight. The highest CRP levels were found in the most severely arthritic monkeys, indicating a possible relationship of the absolute plasma CRP levels to the severity of inflammation. During periods of active arthritis, increased excretion rates of collagen cross-links HP and LP in the urine were found. In particular, the major collagen cross-link in articular cartilage, HP, showed a strong increase (9- to 15-fold). The excretion rates of LP, which is considered as a bone-specific degradation marker, only increased 4- to 6-fold, thus indicating predominant destruction of cartilage and less of bone. In conclusion, the severity of CIA can be monitored in a quantitative manner using plasma CRP levels, urinary excretion rates of HP and LP, and body weights, superimposed on semiquantitative clinical scores. The parameters also facilitate a more objective assessment of the effect of anti-arthritic drugs in the model than with the clinical scores alone.
Collapse
Affiliation(s)
- B A Hart
- Department of Immunobiology, Biomedical Primate Research Centre, Rijswijk, The Netherlands
| | | | | | | | | | | | | | | |
Collapse
|
44
|
|
45
|
Ozwara H, Niphuis H, Buijs L, Jonker M, Heeney JL, Bambra CS, Thomas AW, Langermans JA. Flow cytometric analysis on reactivity of human T lymphocyte-specific and cytokine-receptor-specific antibodies with peripheral blood mononuclear cells of chimpanzee (Pan troglodytes), rhesus macaque (Macaca mulatta), and squirrel monkey (Saimiri sciureus). J Med Primatol 1997; 26:164-71. [PMID: 9379483 DOI: 10.1111/j.1600-0684.1997.tb00048.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [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: 02/05/2023]
Abstract
There are relatively few monoclonal antibodies (mAb) that have been characterized for their applicability in studies on the immune system of various nonhuman primates. In the present study, we identified a large number of mAb that can be used in future immunological studies in three different nonhuman primates, i.e., chimpanzees, rhesus macaques, and squirrel monkeys. The reactivity of 161 anti-human mAb to T-cell antigens and cytokine receptors were tested on peripheral blood mononuclear cells (PBMC) from the three primate species by flow cytometric analysis. A total of 105 (65%), 73 (45%), and 68 (42%) antibodies reacted with PBMC from chimpanzees, rhesus macaques, and squirrel monkeys, respectively. Out of the 161 mAb, 38 reacted with all three species and 112 reacted with one or two of the species. No specific reaction was observed with mAb to receptors to GM-CSF, 4-1BB, FLT3, FLX2, common beta-chain, IL-1 (type I receptor), and IL-8.
Collapse
Affiliation(s)
- H Ozwara
- Department of Parasitology, Biomedical Primate Research Centre, Rijswijk, The Netherlands
| | | | | | | | | | | | | | | |
Collapse
|
46
|
Lorré K, Van De Voorde A, De Waele P, De Boer M, Boon L, Ossevoort M, Jonker M. Induction of transplantation tolerance by blockade of the B7-CD28 costimulatory pathway. Immunol Lett 1997. [DOI: 10.1016/s0165-2478(97)85200-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
47
|
Hollander A, Woude F, Waal LP, Bockel H, Jonker M, Claas FHJ, Maarschalk MFJ=, Bruijn JA. No tolerance induction with cryopreserved bone marrow cells after allogeneic kidney transplantation and antilymphocyte globulin in rhesus monkeys. Transpl Int 1997. [DOI: 10.1111/j.1432-2277.1997.tb00697.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
48
|
Ossevoort M, Boon L, Lorré K, de Boer M, Jonker M. Use of anti-B7.1 monoclonal antibody in combination with cyclosporine A to prevent skin transplant rejection in a rhesus monkey model. Immunol Lett 1997. [DOI: 10.1016/s0165-2478(97)85611-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
49
|
Jonker M, vd Hout Y, vd Woude F, Remuzzi G, Perico N. Immunomodulation by intrathymic donor leukocytes in rhesus monkeys. Immunol Lett 1997. [DOI: 10.1016/s0165-2478(97)85604-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
50
|
MeinL E, Hoch RM, Dornmair K, de Waal Malefyt R, Bontrop RE, Jonker M, Lassmann H, Hohlfeld R, Wekerle H, 't Hart BA. Encephalitogenic potential of myelin basic protein-specific T cells isolated from normal rhesus macaques. Am J Pathol 1997; 150:445-53. [PMID: 9033260 PMCID: PMC1858287] [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] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Myelin basic protein (MBP)-specific T cells are implicated in the pathogenesis of multiple sclerosis and are targets of selective immunotherapies. However, autoantigen-specific T cells can also be isolated from healthy individuals. Their functional potential is unknown and obviously cannot be tested in humans. We approached this question in a closely related primate species, the rhesus monkey. CD4+ T cell lines specific for MBP were isolated from normal rhesus monkeys using the same primary limiting dilution technique that is now widely used to generate human autoreactive T cell clones in vitro. Three different epitopes were recognized by three rhesus T cell lines isolated from three different monkeys. Upon activation, all lines produced interferon-gamma, interleukin-2, tumor necrosis factor-alpha, and granulocyte/macrophage colony-stimulating factor but neither interleukin-4 nor transforming growth factor-beta. The MBP-specific T cells were injected intravenously without adjuvant into the nonirradiated autologous monkey. One of the three rhesus monkeys developed an encephalomyelitis with a pleocytosis in the spinal fluid and perivascular infiltrates in the leptomeninges, spinal nerve roots and cerebral cortex. The data demonstrate that the normal immune repertoire of a primate species contains MBP-specific CD4+ T cells that are able to induce an autoimmune encephalomyelitis upon transfer into the nonirradiated autologous recipient.
Collapse
Affiliation(s)
- E MeinL
- Department of Neuroimmunology, Max-Planck Institute of Psychiatry, Martinsried, Germany
| | | | | | | | | | | | | | | | | | | |
Collapse
|