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Kazimierska M, Leśniewska A, Bakker A, Diepstra A, Kasprzyk ME, Podralska M, Rassek K, Kluiver J, van den Berg A, Rozwadowska N, Dzikiewicz-Krawczyk A. Inhibition of the glutamate-cysteine ligase catalytic subunit with buthionine sulfoximine enhances the cytotoxic effect of doxorubicin and cyclophosphamide in Burkitt lymphoma cells. J Appl Genet 2024; 65:95-101. [PMID: 37917375 PMCID: PMC10789666 DOI: 10.1007/s13353-023-00797-1] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 10/13/2023] [Indexed: 11/04/2023]
Abstract
Burkitt lymphoma (BL) is a highly aggressive lymphoma that mainly affects children and young adults. Chemotherapy is effective in young BL patients but the outcome in adults is less satisfactory. Therefore, there is a need to enhance the cytotoxic effect of drugs used in BL treatment. Glutathione (GSH) is an important antioxidant involved in processes such as regulation of oxidative stress and drug detoxification. Elevated GSH levels have been observed in many cancers and were associated with chemoresistance. We previously identified GCLC, encoding an enzyme involved in GSH biosynthesis, as an essential gene in BL. We now confirm that knockout of GCLC decreases viability of BL cells and that the GCLC protein is overexpressed in BL tissues. Moreover, we demonstrate that buthionine sulfoximine (BSO), a known inhibitor of GCLC, decreases growth of BL cells but does not affect control B cells. Furthermore, we show for the first time that BSO enhances the cytotoxicity of compounds commonly used in BL treatment, doxorubicin, and cyclophosphamide. Given the fact that BSO itself was not toxic to control cells and well-tolerated in clinical trials, combination of chemotherapy with BSO may allow reduction of the doses of cytotoxic drugs required to obtain effective responses in BL patients.
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Affiliation(s)
- Marta Kazimierska
- Institute of Human Genetics, Polish Academy of Sciences, Poznań, Poland
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznań, Poland
| | | | - Anja Bakker
- Department of Pathology & Medical Biology, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Arjan Diepstra
- Department of Pathology & Medical Biology, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | | | - Marta Podralska
- Institute of Human Genetics, Polish Academy of Sciences, Poznań, Poland
| | - Karolina Rassek
- Institute of Human Genetics, Polish Academy of Sciences, Poznań, Poland
| | - Joost Kluiver
- Department of Pathology & Medical Biology, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Anke van den Berg
- Department of Pathology & Medical Biology, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
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Canada K, Mazloum-Farzaghi N, Rådman G, Adams J, Bakker A, Baumeister H, Berron D, Bocchetta M, Carr V, Dalton M, de Flores R, Keresztes A, La Joie R, Mueller S, Raz N, Santini T, Shaw T, Stark C, Tran T, Wang L, Wisse L, Wuestefeld A, Yushkevich P, Olsen R, Daugherty A. A (Sub)field Guide to Quality Control in Hippocampal Subfield Segmentation on Highresolution T 2-weighted MRI. bioRxiv 2023:2023.11.29.568895. [PMID: 38076964 PMCID: PMC10705396 DOI: 10.1101/2023.11.29.568895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
Inquiries into properties of brain structure and function have progressed due to developments in magnetic resonance imaging (MRI). To sustain progress in investigating and quantifying neuroanatomical details in vivo, the reliability and validity of brain measurements are paramount. Quality control (QC) is a set of procedures for mitigating errors and ensuring the validity and reliability of brain measurements. Despite its importance, there is little guidance on best QC practices and reporting procedures. The study of hippocampal subfields in vivo is a critical case for QC because of their small size, inter-dependent boundary definitions, and common artifacts in the MRI data used for subfield measurements. We addressed this gap by surveying the broader scientific community studying hippocampal subfields on their views and approaches to QC. We received responses from 37 investigators spanning 10 countries, covering different career stages, and studying both healthy and pathological development and aging. In this sample, 81% of researchers considered QC to be very important or important, and 19% viewed it as fairly important. Despite this, only 46% of researchers reported on their QC processes in prior publications. In many instances, lack of reporting appeared due to ambiguous guidance on relevant details and guidance for reporting, rather than absence of QC. Here, we provide recommendations for correcting errors to maximize reliability and minimize bias. We also summarize threats to segmentation accuracy, review common QC methods, and make recommendations for best practices and reporting in publications. Implementing the recommended QC practices will collectively improve inferences to the larger population, as well as have implications for clinical practice and public health.
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Affiliation(s)
- K.L. Canada
- Institute of Gerontology, Wayne State University, Detroit, MI 48202
| | - N. Mazloum-Farzaghi
- Department of Psychology, University of Toronto, Toronto, Ontario, Canada
- Rotman Research Institute, Baycrest Health Sciences, Toronto, Ontario, Canada
| | - G. Rådman
- Department of Clinical Sciences Lund, Lund University, Lund, Sweden
| | - J.N. Adams
- Department of Neurobiology and Behavior, University of California, Irvine, CA 92697
| | - A. Bakker
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21287
| | - H. Baumeister
- German Center for Neurodegenerative Diseases (DZNE), Magdeburg, Germany
| | - D. Berron
- German Center for Neurodegenerative Diseases (DZNE), Magdeburg, Germany
| | - M. Bocchetta
- Dementia Research Centre, Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, University College London, London, UK
- Centre for Cognitive and Clinical Neuroscience, Division of Psychology, Department of Life Sciences, College of Health, Medicine and Life Sciences, Brunel University London, London, UK
| | - V. Carr
- Department of Psychology, San Jose State University, San Jose, CA 95192
| | - M.A. Dalton
- School of Psychology, University of Sydney, Sydney, Australia
| | - R. de Flores
- INSERM UMR-S U1237, Physiopathology and Imaging of Neurological Disorders (PhIND), Institut Blood and Brain @ Caen-Normandie, Caen-Normandie University, GIP Cyceron, France
| | - A. Keresztes
- Brain Imaging Centre, Research Centre for Natural Sciences, Eötvös Loránd Research Network (ELKH), Budapest, Hungary
- Institute of Psychology, ELTE Eötvös Loránd University, Budapest, Hungary
- Center for Lifespan Psychology, Max Planck Institute for Human Development, Berlin, Germany
| | - R. La Joie
- Memory and Aging Center, Department of Neurology, Weill Institute for Neurosciences, University of California, San Francisco, CA 94158
| | - S.G. Mueller
- Department of Radiology, University of California, San Francisco, CA 94143
- Center for Imaging of Neurodegenerative Diseases, San Francisco VA Medical Center, San Francisco, California 94121
| | - N. Raz
- Center for Lifespan Psychology, Max Planck Institute for Human Development, Berlin, Germany
- Department of Psychology, Stony Brook University, Stony Brook, NY 11794
| | - T. Santini
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15213
| | - T. Shaw
- School of Electrical Engineering and Computer Science, The University of Queensland, Brisbane, Australia
| | - C.E.L. Stark
- Department of Neurobiology and Behavior, University of California, Irvine, CA 92697
| | - T.T. Tran
- Department of Psychology, Stanford University, Stanford, CA 94305
| | - L. Wang
- Department of Psychiatry and Behavioral Health, The Ohio State University Wexner Medical Center, Columbus, OH 43210
| | - L.E.M. Wisse
- Department of Clinical Sciences Lund, Lund University, Lund, Sweden
| | - A. Wuestefeld
- Clinical Memory Research Unit, Department of Clinical Sciences, Malmö, Lund University, Sweden
| | - P.A. Yushkevich
- Penn Image, Computing and Science Laboratory, Department of Radiology, University of Pennsylvania, Philadelphia, PA 19104
| | - R.K. Olsen
- Department of Psychology, University of Toronto, Toronto, Ontario, Canada
- Rotman Research Institute, Baycrest Health Sciences, Toronto, Ontario, Canada
| | - A.M. Daugherty
- Institute of Gerontology, Wayne State University, Detroit, MI 48202
- Department of Psychology, Wayne State University, Detroit, MI 48202
- Michigan Alzheimer’s Disease Research Center, Ann Arbor, MI 48105
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3
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Kok HP, van der Zee J, Guirado FN, Bakker A, Datta NR, Abdel-Rahman S, Schmidt M, Wust P, Crezee J. Treatment planning facilitates clinical decision making for hyperthermia treatments. Int J Hyperthermia 2021; 38:532-551. [PMID: 33784914 DOI: 10.1080/02656736.2021.1903583] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
Background: Treatment quality is important in clinical hyperthermia. Guideline-based treatment protocols are used to determine system settings and treatment strategies to ensure effective tumor heating and prevent unwanted treatment-limiting normal tissue hot spots. Realizing both these goals can prove challenging using generic guideline-based and operator-dependent treatment strategies. Hyperthermia treatment planning (HTP) can be very useful to support treatment strategies. Although HTP is increasingly integrated into the standard clinical workflow, active clinical application is still limited to a small number of hyperthermia centers and should be further stimulated.Purpose: This paper aims to serve as a practical guide, demonstrating how HTP can be applied in clinical decision making for both superficial and locoregional hyperthermia treatments.HTP in clinical decision making: Seven problems that occur in daily clinical practice are described and we show how HTP can enhance insight to formulate an adequate treatment strategy. Examples use representative commercially available hyperthermia devices and cover all stages during the clinical workflow. Problems include selecting adequate phase settings, heating ability analysis, hot spot suppression, applicator selection, evaluation of target coverage and heating depth, and predicting possible thermal toxicity in case of an implant. Since we aim to promote a general use of HTP in daily practice, basic simulation strategies are used in these problems, avoiding a need for the application of dedicated advanced optimization routines that are not generally available.Conclusion: Even fairly basic HTP can facilitate clinical decision making, providing a meaningful and clinically relevant contribution to maintaining and improving treatment quality.
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Affiliation(s)
- H P Kok
- Department of Radiation Oncology, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - J van der Zee
- Department of Radiation Oncology, Erasmus MC, Rotterdam, The Netherlands
| | - F Navarro Guirado
- Department of Medical Physics, Regional University Hospital of Málaga, Malaga, Spain
| | - A Bakker
- Department of Radiation Oncology, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - N R Datta
- Kantonsspital Aarau, Centre for Radiation Oncology KSA-KSB, Aarau, Switzerland
| | - S Abdel-Rahman
- Department of Medicine III, University Hospital LMU Munich, Munich, Germany
| | - M Schmidt
- Department of Radiation Oncology, University Hospital Erlangen, Erlangen, Germany
| | - P Wust
- Department of Radiation Oncology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - J Crezee
- Department of Radiation Oncology, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
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Bakker A, Mathijssen H, Balt J, Van Dijk V, Veltkamp M, Swaans M, Akdim F, Grutters J, Post M. Long-term monitoring of arrhythmias in cardiac sarcoidosis. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
Screening for cardiac sarcoidosis (CS) is recommended since it can manifest with ventricular arrhythmias (VA), atrioventricular conduction block (AVB) and sudden cardiac death (SCD). However, risk stratification for SCD is challenging, in particular in patients without overt cardiac symptoms.
Purpose
This study reports the practice-based risk stratification for SCD and the incidence of arrhythmias and mortality in CS patients by long-term monitoring of arrhythmias.
Methods
A retrospective, single center cohort study was performed in 537 patients with sarcoidosis screened for cardiac involvement with cardiac MRI and fluorodeoxyglucose PET in an hospital, a Dutch tertiary referral center. CS was diagnosed in 115 of 537 patients (21%), complete follow up was available in 108 patients (94%). After risk assessment for SCD (figure 1) an ICD was implanted in 16 high-risk patients. Within the92 low-risk patients, 80 had an internal loop recorder (ILR) implanted and 12 patients received no device. Chart review was performed to assess the occurrence of VA, AVB, death, ICD therapy and device related complications.
Results
During a mean follow-up of 31±15 months, 9 out of 80 ILR patients (11.3%) received an ICD of whom 7 (8.8%) based on recorded arrhythmias (VA in 5 and AVB in 2 patients).
Five out of the total 25 ICD patients (20%) experienced sustained VA successfully treated with anti-tachycardia pacing in 2 (8%) and terminated spontaneously in all other patients. Two ICD patients experienced a mild pocket infection, treated with antibiotics. Two deaths occurred in the low-risk patients: 1 non-cardiac death and 1 SCD due to asystole.
Conclusion
The practice-based risk stratification supported an ICD implantation in up to 5% of sarcoidosis patients screened for CS. Sustained VA occurred in 20% of ICD patients.Early detection of important arrhythmias with an ILR can optimize risk assessment for SCD in CS.
Practise-based risk stratification
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- A Bakker
- St Antonius Hospital, Cardiology, Nieuwegein, Netherlands (The)
| | - H Mathijssen
- St Antonius Hospital, Cardiology, Nieuwegein, Netherlands (The)
| | - J Balt
- St Antonius Hospital, Cardiology, Nieuwegein, Netherlands (The)
| | - V.F Van Dijk
- St Antonius Hospital, Cardiology, Nieuwegein, Netherlands (The)
| | - M Veltkamp
- St Antonius Hospital, Pulmonology, Nieuwegein, Netherlands (The)
| | - M Swaans
- St Antonius Hospital, Cardiology, Nieuwegein, Netherlands (The)
| | - F Akdim
- St Antonius Hospital, Cardiology, Nieuwegein, Netherlands (The)
| | - J.C Grutters
- St Antonius Hospital, Pulmonology, Nieuwegein, Netherlands (The)
| | - M.C Post
- St Antonius Hospital, Cardiology, Nieuwegein, Netherlands (The)
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Hinault T, Kraut M, Bakker A, Dagher A, Courtney SM. Disrupted Neural Synchrony Mediates the Relationship between White Matter Integrity and Cognitive Performance in Older Adults. Cereb Cortex 2020; 30:5570-5582. [DOI: 10.1093/cercor/bhaa141] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 04/14/2020] [Accepted: 05/06/2020] [Indexed: 12/16/2022] Open
Abstract
Abstract
Our main goal was to determine the influence of white matter integrity on the dynamic coupling between brain regions and the individual variability of cognitive performance in older adults. Electroencephalography was recorded while participants performed a task specifically designed to engage working memory and inhibitory processes, and the associations among functional activity, structural integrity, and cognitive performance were assessed. We found that the association between white matter microstructural integrity and cognitive functioning with aging is mediated by time-varying alpha and gamma phase-locking value. Specifically, better preservation of the inferior fronto-occipital fasciculus in older individuals drives faster task-related modulations of alpha and gamma long-range phase-locking value between the inferior frontal gyrus and occipital lobe and lower local phase-amplitude coupling in occipital lobes, which in turn drives better cognitive control performance. Our results help delineate the role of individual variability of white matter microstructure in dynamic synchrony and cognitive performance during normal aging.
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Affiliation(s)
- T Hinault
- U1077 INSERM-EPHE-UNICAEN, Caen, 14000, France
- Department of Psychological and Brain Sciences, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - M Kraut
- Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
| | - A Bakker
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
- F.M. Kirby Research Center, Kennedy Krieger Institute, Baltimore, MD 21205, USA
| | - A Dagher
- McConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University, Montréal QC, H3A 2B4, Canada
| | - S M Courtney
- Department of Psychological and Brain Sciences, Johns Hopkins University, Baltimore, MD, 21218, USA
- F.M. Kirby Research Center, Kennedy Krieger Institute, Baltimore, MD 21205, USA
- Department of Neuroscience, Johns Hopkins University, Baltimore, MD 21205, USA
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Habes EV, Jepma P, Parlevliet JL, Bakker A, Buurman BM. Video-based tools to enhance nurses' geriatric knowledge: A development and pilot study. Nurse Educ Today 2020; 90:104425. [PMID: 32311666 DOI: 10.1016/j.nedt.2020.104425] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 01/15/2020] [Accepted: 03/28/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND The need for health care professionals with geriatric knowledge is expected to increase due to aging of society. Educational tools that fit the specific learning styles of nurses and nursing students might be useful for this. Serioussoap.nl (available in Dutch and English) is an educational tool that integrates video-based gaming and storytelling, and it might be an effective way to improve the geriatric knowledge of nurses or nursing students. OBJECTIVES To investigate the effect of Serioussoap.nl on the geriatric knowledge of nurses and nursing students, and to evaluate its usability. DESIGN We conducted a development and an explorative pilot study, using a pretest posttest quantitative design to investigate the effect of Serioussoap.nl on geriatric knowledge. A qualitative approach was used to evaluate its usability. PARTICIPANTS AND SETTING Three vocational nursing schools (n = 119 second/third year students), one baccalaureate nursing university (n = 77 first year vocational nurses) and one home-care organization (n = 44 vocational nurses) in the Netherlands participated in the quantitative study, and 94 vocational students participated in the qualitative study. METHODS We measured the effect on geriatric knowledge with the Knowledge of Older People Questionnaire (KOP-Q, score 0-30). The qualitative study included observations of 94 participants while they played Serioussoap.nl, four semi-structured focus groups and eleven individual interviews. RESULTS The study demonstrated a significant increase of geriatric knowledge of 7.8% (+2.3 score on the KOP-Q, 95% Confidence Interval (1.4-3.2, p < 0.001). The qualitative data showed that Serioussoap.nl contributed to the reflective learning-style and enhanced meaningful learning. CONCLUSION Serioussoap.nl increased the students' geriatric knowledge and was perceived as a suitable and effective educational tool for vocational nursing students and nurses.
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Affiliation(s)
- E V Habes
- Faculty of Health Care, University of Applied Sciences Utrecht, Utrecht, the Netherlands.
| | - P Jepma
- ACHIEVE Centre for Applied Research, Faculty of Health, Amsterdam University of Applied Sciences, Amsterdam, the Netherlands.
| | - J L Parlevliet
- Faculty of Health Care, University of Applied Sciences Utrecht, Utrecht, the Netherlands; Department of Internal Medicine, Section of Geriatric Medicine, Amsterdam University Medical Center, Amsterdam, the Netherlands.
| | - A Bakker
- Faculty of Nursing, MBO College Almere - ROC van Flevoland, Almere, the Netherlands.
| | - B M Buurman
- Faculty of Health Care, University of Applied Sciences Utrecht, Utrecht, the Netherlands; Department of Internal Medicine, Section of Geriatric Medicine, Amsterdam University Medical Center, Amsterdam, the Netherlands.
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7
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Suurmond J, Bakker A, Van Loey N. Psychological distress in ethnic minority parents of preschool children with burns. Burns 2020; 46:407-415. [DOI: 10.1016/j.burns.2019.07.036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 07/05/2019] [Accepted: 07/27/2019] [Indexed: 10/26/2022]
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Verma S, Gosline S, Peltonen S, Peltonen J, Soragni A, Wallace P, Le L, Topilko P, Gutmann D, Anastasaki C, Mattingly R, Serra E, Lee G, Knight P, LaRosa S, Bakker A, Blakeley J. LB1084 Developing uniform datasets for tissue based studies of cutaneous neurofibromas. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.06.047] [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: 11/17/2022]
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Schooneveldt G, Kok HP, Bakker A, Geijsen ED, Hulshof MCCM, Reijke TMD, Crezee J. The effect of air pockets in the urinary bladder on the temperature distribution during loco-regional hyperthermia treatment of bladder cancer patients. Int J Hyperthermia 2018; 35:441-449. [PMID: 30303415 DOI: 10.1080/02656736.2018.1506890] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Abstract
PURPOSE Loco-regional hyperthermia combined with mitomycin C is used for treatment of nonmuscle invasive bladder cancer (NMIBC). Air pockets may be present in the bladder during treatment. The aim of this study is to quantify the effect of air pockets on the thermal dose of the bladder. METHODS We analysed 16 patients treated for NMIBC. Loco-regional hyperthermia was performed with the in-house developed 70 MHz AMC-4 hyperthermia device. We simulated treatments with the clinically applied device settings using Plan2Heat (developed in-house) including the air pockets delineated on CT scans made following treatment, and with the same volume filled with urine. Temperature distributions simulated with and without air pockets were compared. RESULTS The average air and fluid volumes in the bladder were 6.0 ml (range 0.8 - 19.3 ml) and 183 ml (range 47-322 ml), respectively. The effect of these air pockets varied strongly between patients. Averaged over all patients, the median bladder wall temperature (T50) remained unchanged when an air pocket was present. Temperature changes exceeded ±0.2 °C in, on average, 23% of the bladder wall volume (range 1.3-59%), in 6.0% (range 0.6-20%) changes exceeded ±0.5 °C and in 3.2% (range 0.0-7.4%) changes exceeded ±1.0 °C. There was no correlation between the differences in temperature and the air pocket or bladder volume. There was a positive correlation between air pocket surface and temperature heterogeneity. CONCLUSION Presence of air causes more heterogeneous bladder wall temperatures and lower T90, particularly for larger air pockets. The size of air pockets must therefore be minimized during bladder hyperthermia treatments.
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Affiliation(s)
- G Schooneveldt
- a Department of Radiation Oncology , Academic Medical Center , Amsterdam , The Netherlands
| | - H P Kok
- a Department of Radiation Oncology , Academic Medical Center , Amsterdam , The Netherlands
| | - A Bakker
- a Department of Radiation Oncology , Academic Medical Center , Amsterdam , The Netherlands
| | - E D Geijsen
- a Department of Radiation Oncology , Academic Medical Center , Amsterdam , The Netherlands
| | - M C C M Hulshof
- a Department of Radiation Oncology , Academic Medical Center , Amsterdam , The Netherlands
| | - T M de Reijke
- b Department of Urology , Academic Medical Center , Amsterdam , The Netherlands
| | - J Crezee
- a Department of Radiation Oncology , Academic Medical Center , Amsterdam , The Netherlands
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Kok HP, Schooneveldt G, Bakker A, de Kroon-Oldenhof R, Korshuize-van Straten L, de Jong CE, Steggerda-Carvalho E, Geijsen ED, Stalpers LJA, Crezee J. Predictive value of simulated SAR and temperature for changes in measured temperature after phase-amplitude steering during locoregional hyperthermia treatments. Int J Hyperthermia 2018; 35:330-339. [DOI: 10.1080/02656736.2018.1500720] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Affiliation(s)
- H. P. Kok
- Department of Radiation Oncology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - G. Schooneveldt
- Department of Radiation Oncology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - A. Bakker
- Department of Radiation Oncology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - R. de Kroon-Oldenhof
- Department of Radiation Oncology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - L. Korshuize-van Straten
- Department of Radiation Oncology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - C. E. de Jong
- Department of Radiation Oncology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - E. Steggerda-Carvalho
- Department of Radiation Oncology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - E. D. Geijsen
- Department of Radiation Oncology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - L. J. A. Stalpers
- Department of Radiation Oncology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - J. Crezee
- Department of Radiation Oncology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
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Schotte R, Wagner K, Fatamawati C, Go D, Claassen Y, Bakker A, Spits H, Pos W. PO-402 Establishment of human monoclonal anti tumour antibodies with high affinity to CD9 using an in vitro B cell affinity maturation platform. ESMO Open 2018. [DOI: 10.1136/esmoopen-2018-eacr25.428] [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] Open
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Bakker A, Siegel JA, Mendell MJ, Peccia J. Building and environmental factors that influence bacterial and fungal loading on air conditioning cooling coils. Indoor Air 2018; 28:689-696. [PMID: 29846963 DOI: 10.1111/ina.12474] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 05/08/2018] [Indexed: 06/08/2023]
Abstract
We investigated bacterial and fungal concentrations on cooling coils of commercial AC units and quantified associations between microbial loads and AC unit or building operational parameters. A field campaign was conducted to sample 25 AC units in the humid, subtropical climate of Southern CT, USA and 15 AC units in the hot-summer Mediterranean climate of Sacramento, CA, USA. Median concentrations (with interquartile range) of bacteria and fungi on the cooling coils were 1.2 × 107 (5.1 × 106 -3.9 × 107 ) cells/m2 and 7.6 × 105 (5.6 × 104 -4.4 × 106 ) spore equivalents (SE)/m2 , respectively. Concentrations varied among units with median unit concentrations ranging three orders of magnitude for bacteria and seven orders of magnitude for fungi. Controlled comparisons and multivariable regressions indicate that dominant factors associated with AC coil loading include the nominal efficiency of upstream filters (P = .008 for bacteria and P < .001 for fungi) and coil moisture, which was reflected in fungal loading differences between top and bottom halves of the AC coils in Southern CT (P = .05) and the dew points of the two climates considered (P = .04). Environmental and building characteristics explained 42% (P < .001) of bacterial concentration variability and 66% (P < .001) of fungal concentration variability among samples.
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Affiliation(s)
- A Bakker
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT, USA
| | - J A Siegel
- Department of Civil Engineering, The University of Toronto, Toronto, ON, Canada
- Dalla Lana School of Public Health, The University of Toronto, Toronto, ON, Canada
| | - M J Mendell
- California Department of Public Health, Environmental Health Laboratory Branch, Richmond, CA, USA
| | - J Peccia
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT, USA
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Abstract
OBJECTIVE The aim of this work was to investigate marker profiles for proposed anxiety subtypes in Parkinson disease (PD). METHODS We used the persistent anxiety, episodic anxiety, and avoidance behavior subscales of the Parkinson Anxiety Scale as dependent variables in multivariable linear regression analyses using a cross-sectional data set of 311 patients with PD. Independent variables consisted of a range of demographic, psychiatric, and disease-specific markers. RESULTS In the most parsimonious model of persistent anxiety, higher Hamilton Depression Rating Scale scores, a history of anxiety, fewer years of education, lower Mini-Mental State Examination scores, lower Lawton Instrumental Activities of Daily Living scores, female sex, and complications of therapy (higher Unified Parkinson Disease Rating Scale part IV scores) were all associated with more severe persistent anxiety. Markers associated with more severe episodic anxiety included PD-specific disturbances of activities of daily living, complications of therapy, higher Hamilton Depression Rating Scale scores, female sex, and a history of anxiety. Finally, higher Hamilton Depression Rating Scale scores, a history of anxiety, complications of therapy, and longer disease duration were associated with avoidance behavior. After excluding clinically depressed patients with PD, disease severity and longer disease duration were significantly associated with episodic anxiety, but not with persistent anxiety. CONCLUSION Persistent anxiety is mainly influenced by nonspecific markers, while episodic anxiety seems to be more PD-specific compared to persistent anxiety and may be more situational or contextual. These results provide support for possible distinct underlying constructs for anxiety subtypes in PD.
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Affiliation(s)
- Martinus P. G. Broen
- Department of Neurology, Maastricht University Medical Center, Maastricht, the Netherlands
| | - A. F. G. Leentjens
- Department of Psychiatry, Maastricht University Medical Center, Maastricht, the Netherlands
| | - J. T. Hinkle
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - A. J. H. Moonen
- Department of Psychiatry, Maastricht University Medical Center, Maastricht, the Netherlands
| | - M. L. Kuijf
- Department of Neurology, Maastricht University Medical Center, Maastricht, the Netherlands
| | - N. M. Fischer
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - K. Perepezko
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - A. Bakker
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - G. M. Pontone
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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Kok HP, Korshuize-van Straten L, Bakker A, de Kroon – Oldenhof R, Westerveld GH, Versteijne E, Stalpers LJA, Crezee J. Feasibility of on-line temperature-based hyperthermia treatment planning to improve tumour temperatures during locoregional hyperthermia. Int J Hyperthermia 2017; 34:1082-1091. [DOI: 10.1080/02656736.2017.1400120] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Affiliation(s)
- H. P. Kok
- Department of Radiation Oncology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - L. Korshuize-van Straten
- Department of Radiation Oncology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - A. Bakker
- Department of Radiation Oncology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - R. de Kroon – Oldenhof
- Department of Radiation Oncology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - G. H. Westerveld
- Department of Radiation Oncology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - E. Versteijne
- Department of Radiation Oncology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - L. J. A. Stalpers
- Department of Radiation Oncology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - J. Crezee
- Department of Radiation Oncology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
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Schooneveldt G, Kok HP, Balidemaj E, Geijsen ED, van Ommen F, Sijbrands J, Bakker A, de la Rosette JJMCH, Hulshof MCCM, de Reijke TM, Crezee J. Improving hyperthermia treatment planning for the pelvis by accurate fluid modeling. Med Phys 2016; 43:5442. [DOI: 10.1118/1.4961741] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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Schooneveldt G, Kok H, Bakker A, Geijsen E, de Reijke T, Crezee J. SU-F-J-05: The Effect of Air Pockets in the Urinary Bladder During Bladder Hyperthermia Treatment. Med Phys 2016. [DOI: 10.1118/1.4955913] [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: 11/07/2022] Open
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Schooneveldt G, Kok H, Geijsen E, Bakker A, Balidemaj E, De la Rosette J, Hulshof M, De Reijke T, Crezee J. OC-0548: Hyperthermia treatment planning in the pelvis using thermophysical fluid modelling of the bladder. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)31798-4] [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]
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Schooneveldt G, Geijsen E, Van Ommen F, Bakker A, Kok H, Westendarp Zanartu M, De la Rosette J, Hulshof M, De Reijke T, Crezee J. PO-0727: Thermophysical fluid modelling for loco-regional hyperthermia treatment of Non-Muscle Invasive Bladder Cancer. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)40719-4] [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: 10/23/2022]
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Willie CK, Smith KJ, Day TA, Ray LA, Lewis NCS, Bakker A, Macleod DB, Ainslie PN. Regional cerebral blood flow in humans at high altitude: gradual ascent and 2 wk at 5,050 m. J Appl Physiol (1985) 2013; 116:905-10. [PMID: 23813533 DOI: 10.1152/japplphysiol.00594.2013] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The interindividual variation in ventilatory acclimatization to high altitude is likely reflected in variability in the cerebrovascular responses to high altitude, particularly between brain regions displaying disparate hypoxic sensitivity. We assessed regional differences in cerebral blood flow (CBF) measured with Duplex ultrasound of the left internal carotid and vertebral arteries. End-tidal Pco2, oxyhemoglobin saturation (SpO2), blood pressure, and heart rate were measured during a trekking ascent to, and during the first 2 wk at, 5,050 m. Transcranial color-coded Duplex ultrasound (TCCD) was employed to measure flow and diameter of the middle cerebral artery (MCA). Measures were collected at 344 m (TCCD-baseline), 1,338 m (CBF-baseline), 3,440 m, and 4,371 m. Following arrival to 5,050 m, regional CBF was measured every 12 h during the first 3 days, once at 5-9 days, and once at 12-16 days. Total CBF was calculated as twice the sum of internal carotid and vertebral flow and increased steadily with ascent, reaching a maximum of 842 ± 110 ml/min (+53 ± 7.6% vs. 1,338 m; mean ± SE) at ∼ 60 h after arrival at 5,050 m. These changes returned to +15 ± 12% after 12-16 days at 5,050 m and were related to changes in SpO2 (R(2) = 0.36; P < 0.0001). TCCD-measured MCA flow paralleled the temporal changes in total CBF. Dilation of the MCA was sustained on days 2 (+12.6 ± 4.6%) and 8 (+12.9 ± 2.9%) after arrival at 5,050 m. We observed no significant differences in regional CBF at any time point. In conclusion, the variability in CBF during ascent and acclimatization is related to ventilatory acclimatization, as reflected in changes in SpO2.
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Affiliation(s)
- C K Willie
- Centre for Heart, Lung and Vascular Health, School of Health and Exercise Sciences, University of British Columbia-Okanagan, Kelowna, British Columbia, Canada
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Mulders T, Bogaard BV, Bakker A, Trip M, Stroes E, Born BV, Pinto-Sietsma S. 853 ARTERIAL STIFFNESS IN FAMILIES WITH PREMATURE CORONARY ARTERY DISEASE. ATHEROSCLEROSIS SUPP 2011. [DOI: 10.1016/s1567-5688(11)70854-6] [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]
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Sondermeijer B, Bakker A, Halliani A, Maiwald S, Sivapalaratnam S, Mulders T, de Ronde M, Tijsen A, Marquart J, Moerland P, Trip M, Meijers J, Creemers E, Pinto-Sietsma S. 449 MICRORNAS 340* AND 624* ARE UPREGULATED IN PLATELETS IN PATIENTS WITH CORONARY ARTERY DISEASE. ATHEROSCLEROSIS SUPP 2011. [DOI: 10.1016/s1567-5688(11)70450-0] [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: 10/18/2022]
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Jensen RL, Gilliespie D, Ajewung N, Faure R, Kamnasaran D, Ajewung N, Poirier D, Kamnasaran D, Tamura K, Wakimoto H, Rabkin SD, Martuza RL, Shah K, Hashizume R, Aoki Y, Serwer LP, Drummond D, Noble C, Park J, Bankiewicz K, James DC, Gupta N, Agerholm-Larsen B, Iversen HK, Jensen KS, Moller J, Ibsen P, Mahmood F, Gehl J, Corem E, Ram Z, Daniels D, Last D, Shneor R, Salomon S, Perlstein B, Margel S, Mardor Y, Charest G, Fortin D, Mathieu D, Sanche L, Paquette B, Li HF, Hashizume R, Aoki Y, Hariono S, Dasgupta T, Kim JS, Haas-Kogan D, Weiss WA, Gupta N, James CD, Waldman T, Nicolaides T, Ozawa T, Rao S, Sun H, Ng C, De La Torre J, Santos R, Prados M, James CD, Butowski N, Michaud K, Solomon DA, Li HF, Kim JS, Prados MD, Ozawa T, Waldman T, James CD, Pandya H, Gibo D, Debinski W, Vinchon-Petit S, Jarnet D, Jadaud E, Feuvret L, Garcion E, Menei P, Chen R, Yu JC, Liu C, Jaffer ZM, Chabala JC, Winssinger N, Rubenstein AE, Emdad L, Kothari H, Qadeer Z, Binello E, Germano I, Hirschberg H, Baek SK, Kwon YJ, Sun CH, Li SC, Madsen S, Debinski W, Liu T, Wang SW, Gibo DM, Fan QW, Cheng C, Hackett C, Feldman M, Houseman BT, Houseman BT, Nicolaides T, James CD, Haas-Kogan D, Oakes SA, Debnath J, Shokat KM, Weiss WA, Sai K, Chen F, Qiu Z, Mou Y, Zhang X, Yang Q, Chen Z, Patel TR, Zhou J, Piepmeier JM, Saltzman WM, Banerjee S, Kaul A, Gianino SM, Christians U, Gutmann DH, Wu J, Shen R, Puduvalli V, Koul D, Alfred Yung WK, Yun J, Sonabend A, Stuart M, Yanagihara T, Dashnaw S, Brown T, McCormick P, Romanov A, Sebastian M, Canoll P, Bruce JN, Piao L, Joshi K, Lee RJ, Nakano I, Madsen SJ, Chou CC, Blickenstaff JW, Sun CH, Zhou YH, Hirschberg H, Tome CML, Wykosky J, Palma E, Debinski W, Nduom E, Machaidze R, Kaluzova M, Wang Y, Nie S, Hadjipanayis C, Saito R, Nakamura T, Sonoda Y, Kumabe T, Tominaga T, Lun X, Zemp F, Zhou H, Stechishin O, Kelly JJ, Weiss S, Hamilton MG, Cairncross G, Rabinovich BA, Bell J, McFadden G, Senger DL, Forsyth PA, Kang P, Jane EP, Premkumar DR, Pollack IF, Yoo JY, Haseley A, Bratasz A, Powell K, Chiocca EA, Kaur B, Johns TG, Ferruzzi P, Mennillo F, De Rosa A, Rossi M, Giordano C, Magrini R, Benedetti G, Pericot GL, Magnoni L, Mori E, Thomas R, Tunici P, Bakker A, Yoo JY, Pradarelli J, Kaka A, Alvarez-Breckenridge C, Pan Q, Teknos T, Chiocca EA, Kaur B, Cen L, Ostrem JL, Schroeder MA, Mladek AC, Fink SR, Jenkins RB, Sarkaria JN, Madhankumar AB, Slagle-Webb B, Park A, Pang M, Klinger M, Harbaugh KS, Sheehan JM, Connor JR, Chen TC, Wang W, Hofman FM, Serwer LP, Michaud K, Drummond DC, Noble CO, Park JW, Ozawa T, James CD, Serwer LP, Noble CO, Michaud K, Drummond DC, Ozawa T, Zhou Y, Marks JD, Bankiewicz K, Park JW, James CD, Alonso MM, Gomez-Manzano C, Cortes-Santiago N, Roche FP, Fueyo J, Johannessen TCA, Grudic A, Tysnes BB, Nigro J, Bjerkvig R, Joshi AD, Parsons W, Velculescu VE, Riggins GJ, Bindra RS, Jasin M, Powell SN, Fu J, Koul D, Shen RJ, Colman H, Lang FF, Jensen MR, Alfred Yung WK, Friedman GK, Haas M, Cassady KA, Gillespie GY, Nguyen V, Murphy LT, Beauchamp AS, Hollingsworth CK, Debinski W, Mintz A, Pandya H, Garg S, Gibo D, Kridel S, Debinski W, Conrad CA, Madden T, Ji Y, Colman H, Priebe W, Seleverstov O, Purow BW, Grant GA, Wilson C, Campbell M, Humphries P, Li S, Li J, Johnson A, Bigner D, Dewhirst M, Sarkaria JN, Cen L, Pokorny JL, Mladek AC, Kitange GJ, Schroeder MA, Carlson BL, Suphangul M, Petro B, Mukhtar L, Baig MS, Villano J, Mahmud N, Keir ST, Reardon DA, Watson M, Shore GC, Bigner DD, Friedman HS, Keir ST, Gururangan S, Reardon DA, Bigner DD, Friedman HS. Pre-clinical Experimental Therapeutics and Pharmacology. Neuro Oncol 2010. [DOI: 10.1093/neuonc/noq116.s13] [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: 11/13/2022] Open
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Gallagher M, Bakker A, Yassa MA, Stark CEL. Bridging neurocognitive aging and disease modification: targeting functional mechanisms of memory impairment. Curr Alzheimer Res 2010; 7:197-9. [PMID: 20088811 DOI: 10.2174/156720510791050867] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2009] [Accepted: 11/24/2009] [Indexed: 11/22/2022]
Abstract
Risk for Alzheimer's disease escalates dramatically with increasing age in the later decades of life. It is widely recognized that a preclinical condition in which memory loss is greater than would be expected for a person's age, referred to as amnestic mild cognitive impairment, may offer the best opportunity for intervention to treat symptoms and modify disease progression. Here we discuss a basis for age-related memory impairment, first discovered in animal models and recently isolated in the medial temporal lobe system of man, that offers a novel entry point for restoring memory function with the possible benefit in slowing progression to Alzheimer's disease.
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Affiliation(s)
- M Gallagher
- Department of Psychological and Brain Science, Johns Hopkins University, Baltimore, MD 21218, USA.
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Abstract
Abstract
Objective
To explore patients' satisfaction with their community pharmacy's services and to evaluate the effects of an intervention programme in which a trained technician organised patient education activities in the pharmacy.
Method
We surveyed patients visiting the participating pharmacies at three stages: at the start of the intervention period (0 months, T0), at the end (after 12 months, T1), and 12 months after the intervention had been completed (24 months from baseline, T2). At each stage, 500 questionnaires were distributed by each pharmacy.
Setting
28 Dutch community pharmacies: 14 intervention and 14 controls.
Key findings
The response rates were 54%, 44% and 43% at T0, T1 and T2, respectively. Baseline data showed that patients reported satisfaction with helpfulness, waiting time, ease of asking questions, answers to questions, and patient leaflets provided. Around two thirds (59.5%) of the patients said they would ask a pharmacy employee questions if they were concerned about side effects of their medication. Asking questions was not reported to be difficult for most patients (88.9%). The reasons most often given for experiencing difficulties with asking questions were related to lack of privacy (16.9% of all patients), waiting time of other patients (8.8%) and busy pharmacy employees (6.7%). The most frequently reported reason for being less satisfied with the answers to questions was receiving too little information (7.5%). Our analyses showed a significant improvement only on the outcome variable “helpfulness” experienced by patients between 0 (T0) and 12 months (T1), and this was found to be sustained one year later (T2).
Conclusion
The overall findings on patient satisfaction showed that almost two-thirds of the respondents saw the pharmacy as a source of information about medication. Community pharmacies clearly have an important role in providing such information. Lack of privacy was the most common reason for patients reporting difficulties in asking questions about medicines and this needs pharmacists' attention. Our analysis showed that the intervention had an effect on “helpfulness” experienced by patients, which slightly increased in the intervention period (T0-T1 differences) and appeared to have remained at the higher level one year later (T2).
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Affiliation(s)
- M C M Pronk
- Department of Pharmacoepidemiology and Pharmacotherapy, Utrecht Institute for Pharmaceutical Sciences (UIPS), The Netherlands
| | - A Th G Blom
- Department of Pharmacoepidemiology and Pharmacotherapy, Utrecht Institute for Pharmaceutical Sciences (UIPS), The Netherlands
| | | | - A Bakker
- Department of Pharmacoepidemiology and Pharmacotherapy, Utrecht Institute for Pharmaceutical Sciences (UIPS), The Netherlands
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Redgrave GW, Bakker A, Bello NT, Caffo BS, Coughlin JW, Guarda AS, McEntee JE, Pekar JJ, Reading SA, Reinblatt SP, Verduzco G, Moran TH. Imaging The Iowa Gambling Task In Anorexia Nervosa: Differential Activation in Patients and Controls While Making and Anticipating Results Of High- Versus Low-Risk Decisions. Neuroimage 2009. [DOI: 10.1016/s1053-8119(09)71365-5] [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: 11/28/2022] Open
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Reading S, McEntee J, Tennis R, Bakker A, Yoritomo N, Pekar J, Mori S, van Zijl P, Margolis RL, Ross CA. Relationship of frontal lobe bold signal and fractional anisotropy in subjects with schizophrenia during a Stroop interference task. Neuroimage 2009. [DOI: 10.1016/s1053-8119(09)71655-6] [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: 10/20/2022] Open
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Bakker A, Pinto-Sietsma SJ. Abstract: P774 MICRORNA'S: PROMISING BIOMARKERS IN CARDIOVASCULAR DISEASE. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)70930-4] [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: 10/20/2022]
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Abstract
We describe a late complication in a 75-year-old man 50 years after repair of a coarctation of the aorta (CoA). Two years after an aortic valve replacement, mitral valve repair and radiofrequency MAZE the patient presented with dyspnoea and right-sided heart failure, based on a large pseudoaneurysm of the descending aorta, compressing the main bronchus and possibly temporarily the pulmonary arterial system. After sealing the aneurysm with an endovascular stent the patient recovered uneventfully. Recommendations are made for follow-up in patients after repair of CoA. (Neth Heart J 2008;16:260-3.).
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Affiliation(s)
- B.E. Groenemeijer
- Department of Cardiology, Gelre Hospitals, Apeldoorn, the Netherlands
| | - A. Bakker
- Department of Cardiology, Gelre Hospitals, Apeldoorn, the Netherlands
| | - H.W. Slis
- Department of Radiology, Gelre Hospitals, Apeldoorn, the Netherlands
| | - R.A. Waalewijn
- Department of Cardiology, Gelre Hospitals, Apeldoorn, the Netherlands
| | - R.H. Heijmen
- Department of Thoracic Surgery, St. Antonius Hospital, Nieuwegein, the Netherlands
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Tack F, Noppe M, Van Dijck A, Dekeyzer N, Van Der Leede BJ, Bakker A, Wouters W, Janicot M, Brewster ME. Delivery of a DNAzyme targeting c-myc to HT29 colon carcinoma cells using a gold nanoparticulate approach. Pharmazie 2008; 63:221-225. [PMID: 18444511] [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: 05/26/2023]
Abstract
The objective of the current study was to develop cellular delivery approaches for catalytic DNA enzymes (DNAzymes) which cleave targeted messenger RNA, using vectors based on colloidal gold. The model DNAzyme was a 32mer oligonucleotide designed to specifically interact with and cleave c-myc mRNA. Colloidal gold particles were prepared by reduction of tetrachlororauric [III] acid with sodium citrate. Particles could be produced in the 1-90 nm range. A cationic substrate linked to transferrin was electrostatically/hydrophobically bound to the gold particle. These vectors were then treated with the DNAzyme to yield the condensed DNA-cationic polymer-particulate product. The pH (4-11.5), the quantity of the DNAzymes (0.079-0.567 microg/probe), the cationic polymer (polylysine (PL) or polyethylenimine (PEI)) as well as the surfactant (PVP) concentration (0-0.5%) were varied to give stable constructs which decomplexed under the desired conditions (i.e., in lysosomes and at lower pH values). Cellular uptake of the FITC-labelled c-myc DNAzyme incorporated in this vector was measured using FACS analysis in human HT29 colon carcinoma cells. Data suggested that PEI gave better delivery efficiencies than PL. The use of PVP to stabilize the formed dispersions was detrimental to DNAzyme delivery when PL was used but had little effect in the PEI systems. In the best cases, delivery to 77% of the cells was possible using PEI with the PVP stabilizer and completing the DNA condensation at pH 5.5 with 0.118 microg of DNAzyme/probe. In contrast, the best conditions for PL gave only transfection to 43% of the cells (no PVP, condensed at pH 5.7 and with a loading of 0.079 microg DNAzyme/probe). The PL probe tended to be more toxic than the PEI-based systems (65% cell death in PL transfected cells compared to 22% for PEI). These results suggest that cellular targeting using colloidal gold appears feasible for DNAzyme delivery.
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Affiliation(s)
- F Tack
- Department of Molecular Cell Biology, Research Institute of Growth and Development, University of Maastricht, Maastricht, The Netherlands
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Nowak K, Ravenscroft G, Jackaman C, Lim E, Squire S, Potter A, Fisher R, Morling P, Griffiths L, Papadimitriou J, Sewry C, Fabian V, Lessard J, Crawford K, Bakker A, Davies K, Laing N. T.O.3 Transgenic expression of cardiac actin rescues skeletal actin-null mice. Neuromuscul Disord 2007. [DOI: 10.1016/j.nmd.2007.06.458] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Tack F, Bakker A, Maes S, Dekeyser N, Bruining M, Elissen-Roman C, Janicot M, Janssen HM, De Waal BFM, Fransen PM, Lou X, Meijer EW, Arien A, Brewster ME. Dendrimeric poly(propylene-imines) as effective delivery agents for DNAzymes: dendrimer synthesis, stability and oligonucleotide complexation. J Control Release 2007; 116:e24-6. [PMID: 17718950 DOI: 10.1016/j.jconrel.2006.09.030] [Citation(s) in RCA: 5] [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: 11/30/2022]
Affiliation(s)
- F Tack
- Oncology Discovery Research and Early Development, Johnson and Johnson Pharmaceutical Research and Development, Beerse, Belgium
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Sharma A, Goh HL, Asokananthan N, Bakker A, Stewart GA, Mitchell HW. Delayed and persistent suppression of bronchoconstriction by trypsin in the airway lumen. Eur Respir J 2006; 27:20-8. [PMID: 16387931 DOI: 10.1183/09031936.06.00041605] [Citation(s) in RCA: 2] [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: 11/05/2022]
Abstract
Mucosal trypsin, a protease-activated receptor (PAR) stimulant, may have an endogenous bronchoprotective role on airway smooth muscle. To test this possibility the effects of lumenal trypsin on airway tone in segments of pig bronchus were tested. Bronchial segments from pigs were mounted in an organ chamber containing Kreb's solution. Contractions were assessed from isovolumetric lumen pressure induced by acetylcholine (ACh) or carbachol added to the adventitia. Trypsin, added to the airway lumen (300 microg x mL(-1)), had no immediate effect on smooth muscle tone but suppressed ACh-induced contractions after 60 min, for at least 3 h. Synthetic activating peptides (AP) for PAR1, PAR2 or PAR3 were without effect, but PAR4 AP caused rapid, weak suppression of contractions. Lumenal thrombin was without effect and did not prevent the effects of trypsin. Effects of trypsin were reduced by N(omega)-nitro-L-arginine methyl ester but not indomethacin. Trypsin, thrombin and PAR4 AP released prostaglandin E2. Adventitially, trypsin, thrombin and PAR4 AP (but not PAR2 AP) relaxed carbachol-toned airways after <3 min. The findings of this study show that trypsin causes delayed and persistent bronchoprotection by interacting with airway cells accessible from the lumen. The signalling mechanism may involve nitric oxide synthase but not prostanoids or protease-activated receptors.
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Affiliation(s)
- A Sharma
- Discipline of Physiology, School of Biomedical, Biomolecular and Chemical Sciences, University of Western Australia, Perth, Western Australia
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Caricasole A, Bakker A, Copani A, Nicoletti F, Gaviraghi G, Terstappen GC. Two Sides of the Same Coin: Wnt Signaling in Neurodegeneration and Neuro-Oncology. Biosci Rep 2005; 25:309-27. [PMID: 16307379 DOI: 10.1007/s10540-005-2893-6] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.1] [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: 12/21/2022] Open
Abstract
Wnts function through the activation of at least three intracellular signal transduction pathways, of which the canonical β-catenin mediated pathway is the best understood. Aberrant canonical Wnt signaling has been involved in both neurodegeneration and cancer. An impairment of Wnt signals appears to be associated with aspects of neurodegenerative pathologies while overactivation of Wnt signaling is a common theme in several types of human tumors. Therefore, although therapeutic approaches aimed at modulating Wnt signaling in neurodegenerative and hyperproliferative diseases might impinge on the same molecular mechanisms, different pharmacological outcomes are required. Here we review recent developments on the understanding of the role of Wnt signaling in Alzheimer's disease and CNS tumors, and identify possible avenues for therapeutic intervention within a complex and multi-faceted signaling pathway.
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Affiliation(s)
- A Caricasole
- Sienabiotech S.p.A., Via Fiorentina 1, 53100, Siena, Italy
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Kuipers NB, Riemslag AC, Lange RFM, Janssen M, Bakker A, Marissen R. Environmental stress cracking of a chemical nature in a PBT/PBA co-poly(ester ester). POLYM ENG SCI 2004. [DOI: 10.1002/pen.20127] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Abstract
In this chapter the main issues discussed at the IMIA working conference "Realising Security of the Electronic Health Record (EHR) "31 May-3 June, Varenna Italy are presented together with conclusions and recommendations. In total there were eight discussion group sessions.
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Affiliation(s)
- A Bakker
- Addabit BV, Atjehweg 10, AP Noordwijk 2202, The Netherlands
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Abstract
Reported studies show that the systemic form of Langerhans cell histiocytosis (LCH) is a clonal expansion of Langerhans cells (LC) associated with aberrant expression of several oncogenes or tumor-suppressor genes. LCH of the lung is a heterogenous group of lesions thought to be a reactive rather than neoplastic process. The histogenesis of the LCH of the lung is uncertain, and to date there are no studies investigating its underlying molecular abnormalities. We performed comparative genotypic analysis by using allelic loss (LOH) of polymorphic microsatellite markers associated with tumor suppressor genes. Fourteen cases of formalin-fixed, paraffin-embedded LCH of the lung were studied. Microdissection of a total of 26 nodules from 14 patients and paired reference lung tissue was performed under stereomicroscopic visualization. To evaluate allelic loss, we used a panel of 11 polymorphic microsatellite markers that were situated at or near tumor suppressor genes on chromosomes 1p, 1q, 3p, 5p, 9p, 17p, and 22q. The PCR products were analyzed by using capillary electrophoresis to identify germline heterozygous alleles and LOH. Allelic loss at 1 or more tumor suppressor gene loci was identified in 19 of 24 nodules. The total fractional allelic loss (FAL) ranged from 6% (1q) to 41% (22q), with a mean of 22%. The FAL in individual cases ranged from 0 (7 nodules) to 57% (1 nodule). Fifteen discordant allelic losses at 1 to 3 chromosomal loci were identified in 8 patients with multiple synchronous nodules. Our results show that LOH of tumor suppressor genes is present in the LCH of the lung, and they indicate that the putative tumor suppressor genes situated on chromosomes 9p and 22q may play a role in the development of a subset of the LCH of the lung.
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Affiliation(s)
- S Dacic
- Department of Pathology, Division of Anatomic Pathology, University of Pittsburgh Medical Center, PA 15213, USA
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Bakker A. The need for a time-machine in the distributed HER. Stud Health Technol Inform 2004; 107:834-7. [PMID: 15360929] [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: 04/30/2023]
Abstract
It is widely expected that the Electronic Health Record (EHR) will become an important tool for healthcare professionals when delivering care. The use of this tool will not for long be optional, it will become a professional responsibility to use this tool when appropriate. Until now the focus in the design and implementation of the EHR is on its real-time behaviour. In this paper it is argued that there is a need to be able to reproduce the EHR as it would have presented itself to a specified health care professional at a specified point of time in the past (a "time-machine"). This to be able to assess whether the behaviour of the health care professional was appropriate in view of the data he did retrieve or could have retrieved from the EHR at that point in time. Next the consequences of the implementation of such functionality are explored, these are found to be huge. It would require substantial investments to implement this functionality. So it is important that clarity is created on the need for this time-machine. The professional associations involved and the bodies responsible for the quality of care have to be involved in further discussion on this issue. IMIA might take the lead. Because implementation of the time-machine would have consequences for any information system that contributes in real-time to the EHR, it may well be that the need for this functionality will affect the current common opinion that medical patient data should remain stored in the information systems of the health care establishments where the data were generated and be requested from these systems by the virtual EHR when needed. Uploading medical patient data from the operational systems in the health care establishments to medical data repositories could reduce the number of systems affected considerably.
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Pinelli D, Bakker A, Myers K, Reeder M, Fasano J, Magelli F. Some Features of a Novel Gas Dispersion Impeller in a Dual-Impeller Configuration. Chem Eng Res Des 2003. [DOI: 10.1205/026387603765173709] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Abstract
OBJECTIVE To compare the short-term efficacy of selective serotonin reuptake inhibitors (SSRIs) vs. tricyclic antidepressants (TCAs) in the treatment of panic disorder (PD) a meta-analysis was conducted. METHOD Included were 43 studies (34 randomized, nine open), pertaining to 53 treatment conditions, 2367 patients at pretest and 1804 at post-test. Outcome was measured with the proportion of patients becoming panic-free, and with pre/post Cohen's d effect sizes, calculated for four clinical variables: panic, agoraphobia, depression, and general anxiety. RESULTS There were no differences between SSRIs and TCAs on any of the effect sizes, indicating that both groups of antidepressants are equally effective in reducing panic symptoms, agoraphobic avoidance, depressive symptomatology and general anxiety. Also the percentage of patients free of panic attacks at post-test did not differ. The number of drop-outs, however, was significantly lower in the group of patients treated with SSRIs (18%) vs. TCAs (31%). CONCLUSION SSRIs and TCAs are equal in efficacy in the treatment of panic disorder, but SSRIs are tolerated better.
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Affiliation(s)
- A Bakker
- Sint Lucas Andreas Hospital, Amsterdam, The Netherlands.
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Verweij CL, Bayley JP, Bakker A, Kaijzel EL. Allele specific regulation of cytokine genes: monoallelic expression of the IL-1A gene. Adv Exp Med Biol 2002; 495:129-39. [PMID: 11774556 DOI: 10.1007/978-1-4615-0685-0_17] [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] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Affiliation(s)
- C L Verweij
- Department of Rheumatology, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, The Netherlands.
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Vergouwen ACM, Bakker A. [Adverse effects after switching to a different generic form of paroxetine: paroxetine mesylate instead of paroxetine HCl hemihydrate]. Ned Tijdschr Geneeskd 2002; 146:811-2. [PMID: 12014241] [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: 02/25/2023]
Abstract
Two patients, a 29-year-old man and a 32-year-old woman who were being treated with paroxetine HCl hemihydrate for depression and panic disorder with agoraphobia, respectively, unexpectedly developed complaints after switching to paroxetine mesylate. The symptoms were generalised itching with relapse of the depressive disorder in the man, and nausea with diarrhoea in the woman. The symptoms disappeared after the original treatment with paroxetine HCl hemihydrate was resumed. In the first patient, a rechallenge with the mesylate form of paroxetine led to the same complaints which subsided again after using the first product. Those treating such patients, and the patients themselves, should be informed if the delivery form of paroxetine is changed.
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Affiliation(s)
- A C M Vergouwen
- Sint Lucas Andreas Ziekenhuis, locatie Lucas, afd. Psychiatrie, Postbus 9243, 1006 AE Amsterdam.
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Vergouwen ACM, van Hout HPJ, Bakker A. [Methods to improve patient compliance in the use of antidepressants]. Ned Tijdschr Geneeskd 2002; 146:204-7. [PMID: 11851079] [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: 02/23/2023]
Abstract
Compliance during treatment with antidepressants is important, yet about half of the patients stop using antidepressive medication within 3 months. A structured treatment programme, in which the patient actively participates, with extensive education, surveillance of side effects and compliance, simple regimes, improving problem-solving behaviour and eventually engaging and educating family members and friends can improve compliance. This has been demonstrated in published studies. Research has shown that interventions that enhance compliance can lead to a better outcome of the depression.
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Affiliation(s)
- A C M Vergouwen
- Sint Lucas Andreas Ziekenhuis, afd. Psychiatrie, Postbus 9243, 1006 AE Amsterdam.
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