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Meng F, Ronda R, Strokal M, Kroeze C, Ma L, Krol M, de Graaf I, Zhao Y, Wang Y, Du X, Liu X, Xu W, Zhang F, Wang M. Setting goals for agricultural nitrogen emission reduction to ensure safe air and groundwater quality: A case study of Quzhou, the North China Plain. J Environ Manage 2024; 351:119737. [PMID: 38064983 DOI: 10.1016/j.jenvman.2023.119737] [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] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 11/21/2023] [Accepted: 11/27/2023] [Indexed: 01/14/2024]
Abstract
Setting nitrogen (N) emission targets for agricultural systems is crucial to prevent to air and groundwater pollution, yet such targets are rarely defined at the county level. In this study, we employed a forecasting-and-back casting approach to establish human health-based nitrogen targets for air and groundwater quality in Quzhou county, located in the North China Plain. By adopting the World Health Organization (WHO) phase I standard for PM2.5 concentration (35 μg m-3) and a standard of 11.3 mg NO3--N L-1 for nitrate in drinking water, we found that ammonia (NH3) emissions from the entire county must be reduced by at least 3.2 kilotons year-1 in 2050 to meet the WHO's PM2.5 phase I standard. Additionally, controlling other pollutants such as sulfur dioxide (SO2) and nitrogen oxides (NOx) is necessary, with required reductions ranging from 16% to 64% during 2017-2050. Furthermore, to meet the groundwater quality standard, nitrate nitrogen (NO3--N) leaching to groundwater should not exceed 0.8 kilotons year-1 by 2050. Achieving this target would require a 50% reduction in NH3 emissions and a 21% reduction in NO3--N leaching from agriculture in Quzhou in 2050 compared to their respective levels in 2017 (5.0 and 2.1 kilotons, respectively). Our developed method and the resulting N emission targets can support the development of environmentally-friendly agriculture by facilitating the design of control strategies to minimize agricultural N losses.
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Affiliation(s)
- Fanlei Meng
- State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, National Observation and Research Station of Agriculture Green Development (Quzhou, Hebei), China Agricultural University, Beijing, China; Water Systems and Global Change Group, Wageningen University & Research, P.O. Box 47, 6700, AA, Wageningen, the Netherlands
| | - Reinder Ronda
- Meteorology and Air Quality Group, Wageningen University & Research, P.O. Box 47, 6700, AA, Wageningen, the Netherlands; Royal Netherlands Meteorological Institute (KNMI), Utrechtseweg 297, 3731, GA, De Bilt, the Netherlands
| | - Maryna Strokal
- Water Systems and Global Change Group, Wageningen University & Research, P.O. Box 47, 6700, AA, Wageningen, the Netherlands
| | - Carolien Kroeze
- Water Systems and Global Change Group, Wageningen University & Research, P.O. Box 47, 6700, AA, Wageningen, the Netherlands; Environmental Systems Analysis Group, Wageningen University & Research, Wageningen, 6708, PB, the Netherlands
| | - Lin Ma
- Key Laboratory of Agricultural Water Resources, Hebei Key Laboratory of Soil Ecology, Center for Agricultural Resources Research, Institute of Genetic and Developmental Biology, The Chinese Academy of Sciences, 286 Huaizhong Road, Shijiazhuang, 050021, Hebei, China
| | - Maarten Krol
- Meteorology and Air Quality Group, Wageningen University & Research, P.O. Box 47, 6700, AA, Wageningen, the Netherlands
| | - Inge de Graaf
- Water Systems and Global Change Group, Wageningen University & Research, P.O. Box 47, 6700, AA, Wageningen, the Netherlands
| | - Yuanhong Zhao
- College of Oceanic and Atmospheric Sciences, Ocean University of China, Qingdao, 266100, China
| | - Yutong Wang
- State Key Laboratory of Pollution Control and Resource Reuse and School of the Environment, Nanjing University, 163 Xianlin Ave., Nanjing, Jiangsu, 210023, China
| | - Xiaohui Du
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Xuejun Liu
- State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, National Observation and Research Station of Agriculture Green Development (Quzhou, Hebei), China Agricultural University, Beijing, China
| | - Wen Xu
- State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, National Observation and Research Station of Agriculture Green Development (Quzhou, Hebei), China Agricultural University, Beijing, China.
| | - Fusuo Zhang
- State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, National Observation and Research Station of Agriculture Green Development (Quzhou, Hebei), China Agricultural University, Beijing, China
| | - Mengru Wang
- Water Systems and Global Change Group, Wageningen University & Research, P.O. Box 47, 6700, AA, Wageningen, the Netherlands; Environmental Systems Analysis Group, Wageningen University & Research, Wageningen, 6708, PB, the Netherlands
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Hoefsloot W, Dacheva E, van der Laan R, Krol M, van Ingen J, Obradovic M, Liu X. Real-world treatment patterns in patients with nontuberculous mycobacterial lung disease in the Netherlands based on medication dispensing data. BMC Pulm Med 2023; 23:218. [PMID: 37340431 DOI: 10.1186/s12890-023-02460-1] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 04/28/2023] [Indexed: 06/22/2023] Open
Abstract
PURPOSE Real-world data on antibiotic management of nontuberculous mycobacterial lung disease (NTM-LD) is limited for many countries. This study aimed to evaluate real-world treatment practices of NTM-LD in the Netherlands using medication dispensing data. METHODS A retrospective longitudinal real-world study was conducted using IQVIA's Dutch pharmaceutical dispensing database. The data are collected monthly and include approximately 70% of all outpatient prescriptions in the Netherlands. Patients initiated on specific NTM-LD treatment regimens between October 2015 and September 2020 were included. The main areas of investigation were initial treatment regimens, persistence on treatment, treatment switching, treatment compliance in terms of medication possession rate (MPR) and restarts of treatment. RESULTS The database included 465 unique patients initiated on triple- or dual-drug regimens for the treatment of NTM-LD. Treatment switches were common and occurred approximately 1.6 per quarter throughout the treatment period. The average MPR of patients initiated on triple-drug therapy was 90%. The median time on therapy for these patients was 119 days; after six months and one year, 47% and 20% of the patients, respectively, were still on antibiotic therapy. Of 187 patients initiated on triple-drug therapy, 33 (18%) patients restarted antibiotic therapy after the initial treatment had been stopped. CONCLUSION When on therapy, patients were compliant with the NTM-LD treatment; however, many patients stopped their therapy prematurely, treatment switches often occurred, and part of patients had to restart their therapy after a longer treatment gap. NTM-LD management should be improved through greater guideline adherence and appropriate involvement of expert centers.
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Affiliation(s)
- W Hoefsloot
- Radboudumc Center for Infectious Diseases, Department of Pulmonary Diseases, Radboud University Medical Center, Nijmegen, Netherlands.
| | | | | | - M Krol
- IQVIA, Amsterdam, Netherlands
| | - J van Ingen
- Radboudumc Center for Infectious Diseases, Department of Medical Microbiology, Radboud University Medical Center, Nijmegen, Netherlands
| | - M Obradovic
- Insmed Germany GmbH, Frankfurt am Main, Germany
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Smolarska A, Pruszynska I, Wasylko W, Godlewska K, Markowska M, Rybak A, Botther J, Kucharzewska P, Nowakowska J, Szeliga J, Kubiak M, Gorczak M, Krol M. Targeted therapies for glioblastoma treatment. J Physiol Pharmacol 2023; 74. [PMID: 37661178 DOI: 10.26402/jpp.2023.3.01] [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] [Received: 01/21/2023] [Accepted: 06/30/2023] [Indexed: 09/05/2023]
Abstract
Glioblastoma, the most common and aggressive type of brain tumor in adults, poses significant challenges in terms of treatment. Conventional approaches including surgery, chemotherapy, and radiotherapy have yielded limited success, with a median survival of approximately 15 months. However, extensive research into the biology of glioblastoma has identified molecular targets that can be exploited by newly developed drugs, leading to the emergence of precise personalized therapies. Several innovative treatment strategies are currently under development, aiming to enhance effectiveness while minimizing side effects. Clinical trials are underway to evaluate the efficacy of monoclonal antibodies that target glioblastoma cells, either by blocking specific receptors or by modifying molecular interactions that impede cell proliferation. Another promising avenue involves the use of oncolytic viruses designed to selectively infect glioblastoma cells. Additionally, the review explores the utilization of nanocarriers capable of surmounting the formidable obstacle of the blood-brain barrier, enabling efficient drug delivery. Cell therapies represent another promising approach, with dendritic cells, chimeric antigen receptor-T cells, and macrophages emerging as potential treatment modalities. By summarizing recent advances in targeted therapies against glioblastoma, this review aims to provide a comprehensive overview of ongoing efforts to discover effective and safe methods for treating glioblastoma patients. The ultimate goal is to improve patient outcomes and transform the landscape of glioblastoma treatment.
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Affiliation(s)
- A Smolarska
- Department of Cancer Biology, Institute of Biology, Warsaw University of Life Sciences, Warsaw, Poland
| | - I Pruszynska
- Department of Cancer Biology, Institute of Biology, Warsaw University of Life Sciences, Warsaw, Poland
| | - W Wasylko
- Department of Cancer Biology, Institute of Biology, Warsaw University of Life Sciences, Warsaw, Poland
| | - K Godlewska
- Department of Cancer Biology, Institute of Biology, Warsaw University of Life Sciences, Warsaw, Poland
| | - M Markowska
- Department of Cancer Biology, Institute of Biology, Warsaw University of Life Sciences, Warsaw, Poland
| | - A Rybak
- Department of Cancer Biology, Institute of Biology, Warsaw University of Life Sciences, Warsaw, Poland
| | - J Botther
- Department of Cancer Biology, Institute of Biology, Warsaw University of Life Sciences, Warsaw, Poland
| | - P Kucharzewska
- Department of Cancer Biology, Institute of Biology, Warsaw University of Life Sciences, Warsaw, Poland
| | - J Nowakowska
- Department of Cancer Biology, Institute of Biology, Warsaw University of Life Sciences, Warsaw, Poland
| | - J Szeliga
- Department of Cancer Biology, Institute of Biology, Warsaw University of Life Sciences, Warsaw, Poland
| | - M Kubiak
- Department of Cancer Biology, Institute of Biology, Warsaw University of Life Sciences, Warsaw, Poland
| | - M Gorczak
- Department of Cancer Biology, Institute of Biology, Warsaw University of Life Sciences, Warsaw, Poland
| | - M Krol
- Department of Cancer Biology, Institute of Biology, Warsaw University of Life Sciences, Warsaw, Poland.
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Lwanga EH, van Roshum I, Munhoz DR, Meng K, Rezaei M, Goossens D, Bijsterbosch J, Alexandre N, Oosterwijk J, Krol M, Peters P, Geissen V, Ritsema C. Microplastic appraisal of soil, water, ditch sediment and airborne dust: The case of agricultural systems. Environ Pollut 2023; 316:120513. [PMID: 36374801 DOI: 10.1016/j.envpol.2022.120513] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 10/19/2022] [Accepted: 10/21/2022] [Indexed: 06/16/2023]
Abstract
Although microplastic pollution jeopardizes both terrestrial and aquatic ecosystems, the movement of plastic particles through terrestrial environments is still poorly understood. Agricultural soils exposed to different managements are important sites of storage and dispersal of microplastics. This study aimed to identify the abundance, distribution, and type of microplastics present in agricultural soils, water, airborne dust, and ditch sediments. Soil health was also assessed using soil macroinvertebrate abundance and diversity. Sixteen fields were evaluated, 6 of which had been exposed to more than 5 years of compost application, 5 were exposed to at least 5 years of plastic mulch use, and 5 were not exposed to any specific management (controls) within the last 5 years. We also evaluated the spread of microplastics from the farms into nearby water bodies and airborne dust. We found 11 types of microplastics in soil, among which Light Density Polyethylene (LDPE) and Light Density Polyethylene covered with pro-oxidant additives (PAC) were the most abundant. The highest concentrations of plastics were found in soils exposed to plastic mulch management (128.7 ± 320 MPs.g-1 soil and 224.84 ± 488 MPs.g-1 soil, respectively) and the particles measured from 50 to 150 μm. Nine types of microplastics were found in water, with the highest concentrations observed in systems exposed to compost. Farms applying compost had higher LDPE and PAC concentrations in ditch sediments as compared to control and mulch systems; a significant correlation between soil polypropylene (PP) microplastics with ditch sediment microplastics (r2 0.7 p < 0.05) was found. LDPE, PAC, PE (Polyethylene), and PP were the most abundant microplastics in airborne dust. Soil invertebrates were scarce in the systems using plastic mulch. A cocktail of microplastics was found in all assessed matrices.
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Affiliation(s)
- Esperanza Huerta Lwanga
- Soil Physics and Land Management Group, Wageningen University & Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands; Agroecología, El Colegio de La Frontera Sur, Unidad Campeche, Campeche, Mexico.
| | - Ilse van Roshum
- Soil Physics and Land Management Group, Wageningen University & Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands
| | - Davi R Munhoz
- Soil Physics and Land Management Group, Wageningen University & Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands
| | - Ke Meng
- Soil Physics and Land Management Group, Wageningen University & Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands
| | - Mahrooz Rezaei
- Meteorology and Air Quality Group, Wageningen University & Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands
| | - Dirk Goossens
- Soil Physics and Land Management Group, Wageningen University & Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands; KU Leuven Department of Earth and Environmental Sciences, Geo-Institute, Celestijnenlaan 200 E, 3001, Leuven, Belgium
| | - Judith Bijsterbosch
- Soil Physics and Land Management Group, Wageningen University & Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands
| | - Nuno Alexandre
- Soil Physics and Land Management Group, Wageningen University & Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands
| | - Julia Oosterwijk
- Meteorology and Air Quality Group, Wageningen University & Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands
| | - Maarten Krol
- Meteorology and Air Quality Group, Wageningen University & Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands
| | - Piet Peters
- Soil Physics and Land Management Group, Wageningen University & Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands
| | - Violette Geissen
- Soil Physics and Land Management Group, Wageningen University & Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands
| | - Coen Ritsema
- Soil Physics and Land Management Group, Wageningen University & Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands
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Bruins FM, Bronckers IMGJ, Cai R, Groenewoud JMM, Krol M, de Jong EMGJ, Seyger MMB. Treatment persistence in paediatric and adolescent patients with psoriasis followed into young adulthood. From topical to systemic treatment: a prospective, longitudinal, observational cohort study of 448 patients. Br J Dermatol 2020; 184:464-472. [PMID: 32510578 PMCID: PMC7984075 DOI: 10.1111/bjd.19301] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/03/2020] [Indexed: 12/22/2022]
Abstract
Background Although solely topical treatment often suffices, patients with psoriasis may require more intensive treatment (phototherapy and/or systemic treatments) to control their disease. However, in paediatric, adolescent and young adult patients, little is known about persistence of topical treatment and time until switch to systemic treatment. Objectives To determine the median time from psoriasis onset until (i) discontinuation of solely topical agents and (ii) switch to systemic treatment, and to identify patient characteristics associated with switching to systemic treatments. Methods Data were extracted from the Child‐CAPTURE registry, a prospective, observational cohort of patients with paediatric‐onset psoriasis followed into young adulthood from 2008 to 2018. Data prior to inclusion in the registry were collected retrospectively. Median times were determined through Kaplan–Meier survival analyses. Cox regression analysis was used to identify patient characteristics associated with switch to systemic treatment. Results Of 448 patients, 62·3% stayed on solely topical treatment until data lock; 14·3% switched from topicals to phototherapy, but not to systemic treatment; and 23·4% switched to systemic treatment. The median time from psoriasis onset until discontinuation of solely topical treatment was 7·3 years, and until switch to systemics was 10·8 years. Higher Psoriasis Area and Severity Index and (Children’s) Dermatology Life Quality Index > 5 were independently associated with switching to systemic treatment. Conclusions In a population of paediatric and adolescent patients with mild‐to‐severe psoriasis, one‐third needed more intensive treatment than solely topical therapy to control their disease. We consider the median time until switching to systemics to be long. What is already known about this topic? Psoriasis in the majority of paediatric and adolescent patients can be adequately managed with solely topical treatment. However, some patients require a switch to more intensive treatment in order to control their disease. Little is known about persistence of topical treatment and time until switch to systemic treatment.
What does this study add? In 448 paediatric patients with mild‐to‐severe psoriasis, 62·3% persisted on solely topical treatment, 14·3% switched to phototherapy, but not to systemics, and 23·4% switched to systemic treatment at data lock (total median follow‐up 4·2 years, interquartile range 1·8–7·5). The median time from psoriasis onset until discontinuation of solely topical treatment was 7·3 years, and until switch to systemic treatment 10·8 years. Higher Psoriasis Area and Severity Index and (Children’s) Dermatology Life Quality Index > 5 at switch were independent characteristics associated with switching to systemic treatment.
Linked Comment: Salman. Br J Dermatol 2021; 184:387–388. Plain language summary available online
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Affiliation(s)
- F M Bruins
- Department of Dermatology, Radboud University Medical Centre, Nijmegen, the Netherlands
| | - I M G J Bronckers
- Department of Dermatology, Radboud University Medical Centre, Nijmegen, the Netherlands
| | - R Cai
- Real-World Evidence Solutions, IQVIA, Amsterdam, the Netherlands
| | - J M M Groenewoud
- Department for Health Evidence, Radboud University, Nijmegen, the Netherlands
| | - M Krol
- Real-World Evidence Solutions, IQVIA, Amsterdam, the Netherlands
| | - E M G J de Jong
- Department of Dermatology, Radboud University Medical Centre, Nijmegen, the Netherlands
| | - M M B Seyger
- Department of Dermatology, Radboud University Medical Centre, Nijmegen, the Netherlands
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Wöhler L, Niebaum G, Krol M, Hoekstra AY. The grey water footprint of human and veterinary pharmaceuticals. Water Res X 2020; 7:100044. [PMID: 32462135 PMCID: PMC7242788 DOI: 10.1016/j.wroa.2020.100044] [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] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 01/10/2020] [Accepted: 01/12/2020] [Indexed: 05/19/2023]
Abstract
Water pollution by pharmaceuticals is widespread, causing both environmental and human health risks. We assess pharmaceutical water pollution from human and veterinary pharmaceuticals at three geographical levels: global, national (considering Germany and the Netherlands) and catchment level (with a case study for the Vecht catchment shared by Germany and the Netherlands). The grey water footprint (GWF), a measure of water pollution in volumetric terms, is estimated from pharmaceutical loads entering the aquatic environment, considering different pollutant sources and pathways. We study different substances depending on data availability, which varies across geographical levels. Results show a global per capita GWF of 1900 m3 yr-1 resulting from human consumption of ciprofloxacin. The largest GWFs in both Germany and the Netherlands were found for ethinylestradiol for human and amoxicillin for veterinary use. The estimated per capita GWF from human use of ethinylestradiol is 2300 m3 yr-1 for Germany and 11,300 m3 yr-1 for the Netherlands. The per capita GWFs of German and Dutch consumers of animal products are 12,900 and 10,600 m3 yr-1, respectively. For the Vecht catchment, we estimate the water pollution level per sub-catchment by comparing the GWF to available runoff, which enables us to identify geographic hotspots. In the basin as a whole, GWFs from human and veterinary pharmaceuticals both exceed available runoff. At all levels, pharmaceutical water pollution substantially adds to earlier water footprint studies that excluded this type of pollution, which demonstrates the importance to include pharmaceutics in water footprint studies.
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Affiliation(s)
- Lara Wöhler
- Twente Water Centre, Faculty of Engineering Technology, University of Twente, Horst Complex Z223, P.O Box 217, 7500, AE, Enschede, Netherlands
- Corresponding author.
| | - Gunnar Niebaum
- Institute of Environmental Systems Research, Osnabrück University, Barbarastraße 12, D-49076, Osnabrück, Germany
| | - Maarten Krol
- Twente Water Centre, Faculty of Engineering Technology, University of Twente, Horst Complex Z223, P.O Box 217, 7500, AE, Enschede, Netherlands
| | - Arjen Y. Hoekstra
- Twente Water Centre, Faculty of Engineering Technology, University of Twente, Horst Complex Z223, P.O Box 217, 7500, AE, Enschede, Netherlands
- Institute of Water Policy, Lee Kuan Yew School of Public Policy, National University of Singapore, 469C Bukit Timah Road, 259772, Singapore
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Bialasek M, Kubiak M, Gorczak M, Braniewska A, Kucharzewska-Siembieda P, Krol M, Taciak B. Exploiting iron-binding proteins for drug delivery. J Physiol Pharmacol 2019; 70. [PMID: 31889039 DOI: 10.26402/jpp.2019.5.03] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 10/30/2019] [Indexed: 11/03/2022]
Abstract
Currently, many therapies fail due to an insufficient drug dose reaching the target site and high systemic toxicity. Protein-based drug delivery systems that allow an increase in drug concentration at a specific location in the body or predominantly target malignant cells are promising technologies. Due to the high need for iron in many disorders including various types of cancer, iron-binding proteins: transferrin, ferritin and hemoglobin, are a promising tool as drug carriers. In this review we summarize the characteristics of human iron-binding proteins and present their use in targeted drug delivery strategies.
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Affiliation(s)
- M Bialasek
- Department of Cancer Biology, Institute of Biology, Warsaw University of Life Sciences - SGGW, Warsaw, Poland
| | - M Kubiak
- Department of Cancer Biology, Institute of Biology, Warsaw University of Life Sciences - SGGW, Warsaw, Poland
| | - M Gorczak
- Department of Cancer Biology, Institute of Biology, Warsaw University of Life Sciences - SGGW, Warsaw, Poland
| | - A Braniewska
- Department of Immunology, Centre for Biostructure Research, Medical University of Warsaw, Warsaw, Poland
| | - P Kucharzewska-Siembieda
- Department of Cancer Biology, Institute of Biology, Warsaw University of Life Sciences - SGGW, Warsaw, Poland
| | - M Krol
- Department of Cancer Biology, Institute of Biology, Warsaw University of Life Sciences - SGGW, Warsaw, Poland
| | - B Taciak
- Department of Cancer Biology, Institute of Biology, Warsaw University of Life Sciences - SGGW, Warsaw, Poland.
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Nechita-Banda N, Krol M, van der Werf GR, Kaiser JW, Pandey S, Huijnen V, Clerbaux C, Coheur P, Deeter MN, Röckmann T. Monitoring emissions from the 2015 Indonesian fires using CO satellite data. Philos Trans R Soc Lond B Biol Sci 2018; 373:rstb.2017.0307. [PMID: 30297466 PMCID: PMC6178426 DOI: 10.1098/rstb.2017.0307] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/19/2018] [Indexed: 01/17/2023] Open
Abstract
Southeast Asia, in particular Indonesia, has periodically struggled with intense fire events. These events convert substantial amounts of carbon stored as peat to atmospheric carbon dioxide (CO2) and significantly affect atmospheric composition on a regional to global scale. During the recent 2015 El Niño event, peat fires led to strong enhancements of carbon monoxide (CO), an air pollutant and well-known tracer for biomass burning. These enhancements were clearly observed from space by the Infrared Atmospheric Sounding Interferometer (IASI) and the Measurements of Pollution in the Troposphere (MOPITT) instruments. We use these satellite observations to estimate CO fire emissions within an inverse modelling framework. We find that the derived CO emissions for each sub-region of Indonesia and Papua are substantially different from emission inventories, highlighting uncertainties in bottom-up estimates. CO fire emissions based on either MOPITT or IASI have a similar spatial pattern and evolution in time, and a 10% uncertainty based on a set of sensitivity tests we performed. Thus, CO satellite data have a high potential to complement existing operational fire emission estimates based on satellite observations of fire counts, fire radiative power and burned area, in better constraining fire occurrence and the associated conversion of peat carbon to atmospheric CO2 A total carbon release to the atmosphere of 0.35-0.60 Pg C can be estimated based on our results.This article is part of a discussion meeting issue 'The impact of the 2015/2016 El Niño on the terrestrial tropical carbon cycle: patterns, mechanisms and implications'.
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Affiliation(s)
- Narcisa Nechita-Banda
- Institute for Marine and Atmospheric Research Utrecht (IMAU), University of Utrecht, 3584 CC Utrecht, The Netherlands
| | - Maarten Krol
- Institute for Marine and Atmospheric Research Utrecht (IMAU), University of Utrecht, 3584 CC Utrecht, The Netherlands.,Department of Meteorology and Air Quality (MAQ), Wageningen University and Research Centre, 6700 AA Wageningen, The Netherlands.,SRON Netherlands Institute for Space Research, 3584 CA Utrecht, The Netherlands
| | | | - Johannes W Kaiser
- Air Chemistry Department, Max Planck Institute for Chemistry, 55128 Mainz, Germany
| | - Sudhanshu Pandey
- SRON Netherlands Institute for Space Research, 3584 CA Utrecht, The Netherlands
| | - Vincent Huijnen
- Royal Netherlands Meteorological Institute (KNMI), 3731 GA De Bilt, The Netherlands
| | - Cathy Clerbaux
- LATMOS/IPSL, Sorbonne Université, Université Paris-Saclay, CNRS, 75252 Paris, France.,Spectroscopie de l'Atmosphère, Service de Chimie Quantique et Photophysique, Université Libre de Bruxelles (ULB), 1050 Brussels, Belgium
| | - Pierre Coheur
- Spectroscopie de l'Atmosphère, Service de Chimie Quantique et Photophysique, Université Libre de Bruxelles (ULB), 1050 Brussels, Belgium
| | - Merritt N Deeter
- National Center for Atmospheric Research (NCAR), Boulder, CO 80305, USA
| | - Thomas Röckmann
- Institute for Marine and Atmospheric Research Utrecht (IMAU), University of Utrecht, 3584 CC Utrecht, The Netherlands
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Wiering B, de Boer D, Krol M, Wieberneit-Tolman H, Delnoij D. Entertaining accurate treatment expectations while suffering from chronic pain: an exploration of treatment expectations and the relationship with patient- provider communication. BMC Health Serv Res 2018; 18:706. [PMID: 30200955 PMCID: PMC6131883 DOI: 10.1186/s12913-018-3497-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 08/27/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Accurate patient expectations are important to optimise treatment success, especially for complex conditions such as chronic pain. Communication may be the key to managing patient expectations. This study aimed to explore whether health care provider communication influences patient expectations and which communication aspects are most important. METHODS We conducted secondary analyses on data that had been collected between September and November 2012. 2603 patients suffering from chronic pain were invited to complete a survey. RESULTS Although 69.9% of patients achieved or surpassed their treatment goal, 30.2% of patients were unsatisfied. Even though overall health care provider communication and shared decision making were unrelated to patient expectations, several affective communication aspects were related. These aspects were attentive listening, taking enough time, building patient's trust in the physician's competence and giving patients the feeling that the physician is doing all he or she can (p's < 0.05). CONCLUSIONS Even though treatment goals are not always explicitly discussed, patients still form expectations regarding treatment outcomes. Affective communication may be more important for managing patient expectations than sharing information. Building a good therapeutic relationship by showing affective communication may be important to increase the accuracy of patient expectations.
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Affiliation(s)
- Bianca Wiering
- Tranzo (Scientific Centre for Transformation in Care and Welfare), Tilburg University, PO Box 90153, 5000 LE Tilburg, The Netherlands
| | - Dolf de Boer
- NIVEL (Netherlands institute for health services research), Utrecht, the Netherlands
| | - Maarten Krol
- NIVEL (Netherlands institute for health services research), Utrecht, the Netherlands
| | | | - Diana Delnoij
- Tranzo (Scientific Centre for Transformation in Care and Welfare), Tilburg University, PO Box 90153, 5000 LE Tilburg, The Netherlands
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10
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Janssen CA, Oude Voshaar MAH, Vonkeman HE, Krol M, van de Laar MAFJ. A retrospective analysis of medication prescription records for determining the levels of compliance and persistence to urate-lowering therapy for the treatment of gout and hyperuricemia in The Netherlands. Clin Rheumatol 2018; 37:2291-2296. [PMID: 29721712 PMCID: PMC6061072 DOI: 10.1007/s10067-018-4127-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Revised: 04/19/2018] [Accepted: 04/24/2018] [Indexed: 11/01/2022]
Abstract
Urate-lowering therapy (ULT) is a recommended life-long treatment for gout patients. However, despite these recommendations, recurrent gout attacks are commonly observed in clinical practice. The purpose of this study was to assess the levels of compliance and persistence to ULT in The Netherlands, in order to reflect on the current gout care delivered by health professionals. Anonymous prescription records were obtained from IQVIA's Dutch retrospective longitudinal prescription database, containing ULT dispensing data for allopurinol, febuxostat, and benzbromarone from November 2013 to July 2017. Compliance to ULT was determined by calculating the proportion of days covered (PDC) over 12 months. Persistence over 12 months was evaluated by determining the time to discontinuation, without surpassing a refill gap of > 30 days. Association of PDC and persistence with age, gender, and first prescriber were examined using beta regression- and cox-regression models, respectively. There were 45,654 patients who met the inclusion criteria. Overall, 51.7% of the patients had a ULT coverage of ≥ 80% of the days in 1 year (PDC ≥ 0.80), and 42.7% of the patients were still persistent after 1 year. Men, older patients, and patients whose first prescriber was a rheumatologist were more persistent and had a higher PDC. Our results show that medication adherence to ULT after 1 year is suboptimal, considering that current guidelines recommend ULT as a life-long treatment. Future studies addressing the reasons for treatment cessation and improving treatment adherence seem warranted.
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Affiliation(s)
- C A Janssen
- Department of Psychology, Health and Technology, University of Twente, PO BOX 217, 7500 AE, Enschede, The Netherlands.
| | - M A H Oude Voshaar
- Department of Psychology, Health and Technology, University of Twente, PO BOX 217, 7500 AE, Enschede, The Netherlands
| | - H E Vonkeman
- Department of Psychology, Health and Technology, University of Twente, PO BOX 217, 7500 AE, Enschede, The Netherlands
- Arthritis Center Twente, Medisch Spectrum Twente, Enschede, The Netherlands
| | - M Krol
- IQVIA, Real World Evidence Solutions, Amsterdam, The Netherlands
| | - M A F J van de Laar
- Department of Psychology, Health and Technology, University of Twente, PO BOX 217, 7500 AE, Enschede, The Netherlands
- Arthritis Center Twente, Medisch Spectrum Twente, Enschede, The Netherlands
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11
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Taciak B, Pruszynska I, Kiraga L, Bialasek M, Krol M. Wnt signaling pathway in development and cancer. J Physiol Pharmacol 2018; 69. [PMID: 29980141 DOI: 10.26402/jpp.2018.2.07] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 04/26/2018] [Indexed: 01/18/2023]
Abstract
Wnt signaling pathway is one of the most important signaling pathways. The complexity of Wnt signals and their functional role is crucial in development and growth. It is the most active during embryogenesis facilitating new organism formation by cell differentiation, polarization and migration. Its activation is also common during development of many tumors and others diseases. In this review we shortly describe a role of Wnt pathway in development in order to better understand its role in cancer progression. We also describe current anti-cancer therapies targeting Wnt pathway.
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Affiliation(s)
- B Taciak
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences - SGGW, Warsaw, Poland
| | - I Pruszynska
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences - SGGW, Warsaw, Poland
| | - L Kiraga
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences - SGGW, Warsaw, Poland
| | - M Bialasek
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences - SGGW, Warsaw, Poland
| | - M Krol
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences - SGGW, Warsaw, Poland.
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12
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Elkhouni A, Rabhi M, Ivanov AG, Krol M, Zorrig W, Smaoui A, Abdelly C, Huner NPA. Structural and functional integrity of Sulla carnosa photosynthetic apparatus under iron deficiency conditions. Plant Biol (Stuttg) 2018; 20:415-425. [PMID: 29274120 DOI: 10.1111/plb.12684] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 12/15/2017] [Indexed: 06/07/2023]
Abstract
The abundance of calcareous soils makes bicarbonate-induced iron (Fe) deficiency a major problem for plant growth and crop yield. Therefore, Fe-efficient plants may constitute a solution for use on calcareous soils. We investigated the ability of the forage legume Sulla carnosa (Desf.) to maintain integrity of its photosynthetic apparatus under Fe deficiency conditions. Three treatments were applied: control, direct Fe deficiency and bicarbonate-induced Fe deficiency. At harvest, all organs of deficient plants showed severe growth inhibition, the effect being less pronounced under indirect Fe deficiency. Pigment analysis of fully expanded leaves revealed a reduction in concentrations of chlorophyll a, chlorophyll b and carotenoids under Fe deficiency. Electron transport rate, maximum and effective quantum yield of photosystem II (PSII), photochemical quenching (qP), non-photochemical quenching (qN) as well as P700 activity also decreased significantly in plants exposed to direct Fe deficiency, while qN was not affected. The effects of indirect Fe deficiency on the same parameters were less pronounced in bicarbonate-treated plants. The relative abundances of thylakoid proteins related to PSI (PsaA, Lhca1, Lhca2) and PSII (PsbA, Lhcb1) were also more affected under direct than indirect Fe deficiency. We conclude that S. carnosa can maintain the integrity of its photosynthetic apparatus under bicarbonate-induced Fe deficiency, preventing harmful effects to both photosystems under direct Fe deficiency. This suggests a high capacity of this species not only to take up Fe in the presence of bicarbonate (HCO3- ) but also to preferentially translocate absorbed Fe towards leaves and prevent its inactivation.
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Affiliation(s)
- A Elkhouni
- Laboratory of Extremophile Plants, Centre of Biotechnology of Borj Cedria, Hammam-Lif, Tunisia
| | - M Rabhi
- Laboratory of Extremophile Plants, Centre of Biotechnology of Borj Cedria, Hammam-Lif, Tunisia
| | - A G Ivanov
- Department of Biology, University of Western Ontario, London, Canada
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - M Krol
- Department of Biology, University of Western Ontario, London, Canada
| | - W Zorrig
- Laboratory of Extremophile Plants, Centre of Biotechnology of Borj Cedria, Hammam-Lif, Tunisia
| | - A Smaoui
- Laboratory of Extremophile Plants, Centre of Biotechnology of Borj Cedria, Hammam-Lif, Tunisia
| | - C Abdelly
- Laboratory of Extremophile Plants, Centre of Biotechnology of Borj Cedria, Hammam-Lif, Tunisia
| | - N P A Huner
- Department of Biology, University of Western Ontario, London, Canada
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13
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Pingwara R, Witt-Jurkowska K, Ulewicz K, Mucha J, Tonecka K, Pilch Z, Taciak B, Zabielska-Koczywas K, Mori M, Berardozzi S, Botta B, Rygiel TP, Krol M. Interferon lambda 2 promotes mammary tumor metastasis via angiogenesis extension and stimulation of cancer cell migration. J Physiol Pharmacol 2017; 68:573-583. [PMID: 29151074] [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] [Received: 06/14/2017] [Accepted: 08/25/2017] [Indexed: 06/07/2023]
Abstract
Myeloid-derived suppressor cells (MDSCs) support tumor development by stimulation of angiogenesis and immune response inhibition. In our previous study, we showed that interferon lambda 2 (IFN-λ2), secreted by MDSCs, enhances production of pro-angiogenic factors by cancer cells via phosphorylation of STAT3 and therefore promotes blood vessels formation. In the present study IFN-λ2 level was evaluated by ELISA in serum of tumor-bearing mice, whereas its expression in MDSCs isolated from the lungs with metastatic tumors and normal lungs was assessed by qPCR. The effect of IFN-λ2 on mouse mammary cancer cells motility was tested in Boyden chamber migration assay. In order to evaluate its pro-angiogenic function we performed in vitro tubule formation assay and in ovo angiogenesis assay on chicken embryo chorioallantoic membrane (CAM). Moreover, in order to design small molecule inhibitors of IFN-λ2 and its receptor we performed molecular modeling followed by the identification of potential natural inhibitors. Then, we examined their ability to inhibit angiogenesis in vitro. Our results showed that IFN-λ2 predisposed mouse mammary cancer cells to migration in vitro. It also enhanced angiogenesis induced by mouse mammary cancer cells in vitro and in ovo. For the first time we selected potential IFN-λ2 inhibitors and we validated that they were capable to abolish pro-angiogenic effect of IFN-λ2, similarly to blocking antibodies. Therefore, IFN-λ2 and its receptor may become targets of anti-cancer therapy, but their mechanism of action requires further investigation.
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Affiliation(s)
- R Pingwara
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw, Poland
- Department of Immunology, Centre for Biostructure Research, Medical University of Warsaw, Warsaw, Poland
| | - K Witt-Jurkowska
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw, Poland
| | - K Ulewicz
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw, Poland
| | - J Mucha
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw, Poland
| | - K Tonecka
- Department of Immunology, Centre for Biostructure Research, Medical University of Warsaw, Warsaw, Poland
| | - Z Pilch
- Department of Immunology, Centre for Biostructure Research, Medical University of Warsaw, Warsaw, Poland
| | - B Taciak
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw, Poland
| | - K Zabielska-Koczywas
- Department of Small Animal Diseases with Clinic, Faculty of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw, Poland
| | - M Mori
- Center for Life Nano Science and Sapienza, Italian Institute of Technology, Rome, Italy
| | - S Berardozzi
- Center for Life Nano Science and Sapienza, Italian Institute of Technology, Rome, Italy
- Department of Chemistry and Technology of Drugs, Sapienza University of Rome, Rome, Italy
| | - B Botta
- Department of Chemistry and Technology of Drugs, Sapienza University of Rome, Rome, Italy
| | - T P Rygiel
- Department of Immunology, Centre for Biostructure Research, Medical University of Warsaw, Warsaw, Poland
| | - M Krol
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw, Poland.
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14
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Pandey S, Houweling S, Krol M, Aben I, Monteil G, Nechita-Banda N, Dlugokencky EJ, Detmers R, Hasekamp O, Xu X, Riley WJ, Poulter B, Zhang Z, McDonald KC, White JWC, Bousquet P, Röckmann T. Enhanced methane emissions from tropical wetlands during the 2011 La Niña. Sci Rep 2017; 7:45759. [PMID: 28393869 PMCID: PMC5385533 DOI: 10.1038/srep45759] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 03/03/2017] [Indexed: 11/25/2022] Open
Abstract
Year-to-year variations in the atmospheric methane (CH4) growth rate show significant correlation with climatic drivers. The second half of 2010 and the first half of 2011 experienced the strongest La Niña since the early 1980s, when global surface networks started monitoring atmospheric CH4 mole fractions. We use these surface measurements, retrievals of column-averaged CH4 mole fractions from GOSAT, new wetland inundation estimates, and atmospheric δ13C-CH4 measurements to estimate the impact of this strong La Niña on the global atmospheric CH4 budget. By performing atmospheric inversions, we find evidence of an increase in tropical CH4 emissions of ∼6–9 TgCH4 yr−1 during this event. Stable isotope data suggest that biogenic sources are the cause of this emission increase. We find a simultaneous expansion of wetland area, driven by the excess precipitation over the Tropical continents during the La Niña. Two process-based wetland models predict increases in wetland area consistent with observationally-constrained values, but substantially smaller per-area CH4 emissions, highlighting the need for improvements in such models. Overall, tropical wetland emissions during the strong La Niña were at least by 5% larger than the long-term mean.
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Affiliation(s)
- Sudhanshu Pandey
- Institute of Marine and Atmospheric Research Utrecht (IMAU), Utrecht, The Netherlands.,SRON Netherlands institute for Space Research, Utrecht, The Netherlands
| | - Sander Houweling
- Institute of Marine and Atmospheric Research Utrecht (IMAU), Utrecht, The Netherlands.,SRON Netherlands institute for Space Research, Utrecht, The Netherlands
| | - Maarten Krol
- Institute of Marine and Atmospheric Research Utrecht (IMAU), Utrecht, The Netherlands.,SRON Netherlands institute for Space Research, Utrecht, The Netherlands.,Department of Meteorology and Air Quality (MAQ), Wageningen University and Research Centre, WageningenThe Netherlands
| | - Ilse Aben
- SRON Netherlands institute for Space Research, Utrecht, The Netherlands
| | - Guillaume Monteil
- Department of Physical Geography and Ecosystem Science, Lund University, Lund, Sweden
| | | | | | - Rob Detmers
- SRON Netherlands institute for Space Research, Utrecht, The Netherlands
| | - Otto Hasekamp
- SRON Netherlands institute for Space Research, Utrecht, The Netherlands
| | - Xiyan Xu
- Earth Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA.,CAS Key Laboratory of Regional Climate-Environment for Temperate East Asia, Institute of Atmospheric Physics, Beijing, China
| | - William J Riley
- Earth Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA
| | - Benjamin Poulter
- Institute on Ecosystems and Department of Ecology, Montana State University, Bozeman, USA
| | - Zhen Zhang
- Swiss Federal Research Institute WSL, Birmensdorf, Switzerland
| | - Kyle C McDonald
- City College of New York, City University of New York, New York, NY, USA
| | | | - Philippe Bousquet
- Laboratoire des Sciences du Climatet de l'Environnement (LSCE), Gif-sur-Yvette, France
| | - Thomas Röckmann
- Institute of Marine and Atmospheric Research Utrecht (IMAU), Utrecht, The Netherlands
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15
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Aleksandrowicz R, Taciak B, Krol M. Drug delivery systems improving chemical and physical properties of anticancer drugs currently investigated for treatment of solid tumors. J Physiol Pharmacol 2017; 68:165-174. [PMID: 28614765] [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] [Received: 03/02/2017] [Accepted: 04/28/2017] [Indexed: 06/07/2023]
Abstract
Cancer is the second leading cause of death worldwide. Conventional cancer treatment like chemotherapy do not fulfil the expectations of both patients and physicians and there is a pressing need for a new kind of therapies that will increase drug delivery to the tumor mass. Standard chemotherapy does not show either specific tumor-targeting, or selective mode of action for cancer cells. Moreover, tumor microenvironments additionally disturb drug perfusion and diffusion. Currently approved anticancer drugs have many limitations and therefore special delivery systems improving their chemical and physical properties are beneficial. In the present review paper we discuss various drug delivery systems for solid tumors that are actually at various stages of pre-clinical tests or approved for therapy.
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Affiliation(s)
- R Aleksandrowicz
- Department of Physiological Sciences, Warsaw, University of Life Sciences, Warsaw, Poland
| | - B Taciak
- Department of Physiological Sciences, Warsaw, University of Life Sciences, Warsaw, Poland
| | - M Krol
- Department of Physiological Sciences, Warsaw, University of Life Sciences, Warsaw, Poland.
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16
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Rybicka A, Eyileten C, Taciak B, Mucha J, Majchrzak K, Hellmen E, Krol M. Tumour-associated macrophages influence canine mammary cancer stem-like cells enhancing their pro-angiogenic properties. J Physiol Pharmacol 2016; 67:491-500. [PMID: 27779470] [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] [Received: 04/18/2016] [Accepted: 08/18/2016] [Indexed: 06/06/2023]
Abstract
Cancer stem-like cells as cells with ability to self-renewal and potential to differentiate into various types of cells are known to be responsible for tumour initiation, recurrence and drug resistance. Hence a comprehensive research is concentrated on discovering cancer stem-like cells biology and interdependence between them and other cells. The aim of our study was to evaluate the impact of macrophages on cancer stem-like cells in canine mammary carcinomas. As recent studies indicated presence of macrophages in cancer environment stimulates cancer cells into more motile and invasive cells by acquisition of macrophage phenotypes. From two canine mammary tumour cell lines, CMT-U27 and P114 cancer stem-like cells were stained with Sca1, CD44 and EpCAM monoclonal antibodies and isolated. Those cells were next co-cultured with macrophages for 5 days and used for further experiments. Canine Gene Expression Microarray revealed 29 different expressed transcripts in cancer stem-like cells co-cultured with macrophages compared to those in mono-culture. Up-regulation of C-C motif chemokine 2 was considered as the most interesting for further investigation. Additionally, those cells showed overexpression of genes involved in non-canonical Wnt pathway. The results of 3D tubule formation in endothelial cells induced by cancer stem-like cells co-cultured with macrophages compared to cancer stem-like cells from mono-cultures and with addition of Recombinant Canine CCL2/MCP-1 revealed the same stimulating effect. Based on those results we can conclude that macrophages have an impact on cancer stem-like cells increasing secretion of pro-angiogenic factors.
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Affiliation(s)
- A Rybicka
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw, Poland
| | - C Eyileten
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw, Poland
| | - B Taciak
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw, Poland
| | - J Mucha
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw, Poland
| | - K Majchrzak
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw, Poland
| | - E Hellmen
- Swedish University of Agricultural Sciences, Department of Anatomy, Physiology and Biochemistry, Uppsala, Sweden
| | - M Krol
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw, Poland.
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17
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Levin M, Lin HM, McCormick P, Krol M, Fischer G, Reich D. Response. Br J Anaesth 2016; 117:259-60. [DOI: 10.1093/bja/aew200] [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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18
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Levin M, Fischer G, Lin HM, McCormick P, Krol M, Reich D. Intraoperative arterial blood pressure lability is associated with improved 30 day survival. Br J Anaesth 2015; 115:716-26. [DOI: 10.1093/bja/aev293] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/12/2015] [Indexed: 02/01/2023] Open
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19
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Ivanov AG, Morgan-Kiss RM, Krol M, Allakhverdiev SI, Zanev Y, Sane PV, Huner NPA. Photoinhibition of photosystem I in a pea mutant with altered LHCII organization. J Photochem Photobiol B 2015; 152:335-46. [PMID: 26321219 DOI: 10.1016/j.jphotobiol.2015.08.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Revised: 08/10/2015] [Accepted: 08/13/2015] [Indexed: 11/18/2022]
Abstract
Comparative analysis of in vivo chlorophyll fluorescence imaging revealed that photosystem II (PSII) photochemical efficiency (Fv/Fm) of leaves of the Costata 2/133 pea mutant with altered pigment composition and decreased level of oligomerization of the light harvesting chlorophyll a/b-protein complexes (LHCII) of PSII (Dobrikova et al., 2000; Ivanov et al., 2005) did not differ from that of WT. In contrast, photosystem I (PSI) activity of the Costata 2/133 mutant measured by the far-red (FR) light inducible P700 (P700(+)) signal exhibited 39% lower steady state level of P700(+), a 2.2-fold higher intersystem electron pool size (e(-)/P700) and higher rate of P700(+) re-reduction, which indicate an increased capacity for PSI cyclic electron transfer (CET) in the Costata 2/133 mutant than WT. The mutant also exhibited a limited capacity for state transitions. The lower level of oxidizable P700 (P700(+)) is consistent with a lower amount of PSI related chlorophyll protein complexes and lower abundance of the PsaA/PsaB heterodimer, PsaD and Lhca1 polypeptides in Costata 2/133 mutant. Exposure of WT and the Costata 2/133 mutant to high light stress resulted in a comparable photoinhibition of PSII measured in vivo, although the decrease of Fv/Fm was modestly higher in the mutant plants. However, under the same photoinhibitory conditions PSI photochemistry (P700(+)) measured as ΔA820-860 was inhibited to a greater extent (50%) in the Costata 2/133 mutant than in the WT (22%). This was accompanied by a 50% faster re-reduction rate of P700(+) in the dark indicating a higher capacity for CET around PSI in high light treated mutant leaves. The role of chloroplast thylakoid organization on the stability of the PSI complex and its susceptibility to high light stress is discussed.
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Affiliation(s)
- A G Ivanov
- Department of Biology and the Biotron Centre for Experimental Climate Change Research, University of Western Ontario, 1151 Richmond Street, N., London, Ontario N6A 5B7, Canada.
| | - R M Morgan-Kiss
- Department of Microbiology, Miami University, 700 E. High Street, Oxford, OH 45045, USA
| | - M Krol
- Department of Biology and the Biotron Centre for Experimental Climate Change Research, University of Western Ontario, 1151 Richmond Street, N., London, Ontario N6A 5B7, Canada
| | - S I Allakhverdiev
- Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, Moscow 127276, Russia; Institute of Basic Biological Problems, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russia; Department of Plant Physiology, Faculty of Biology, M.V. Lomonosov Moscow State University, Moscow 119991, Russia
| | - Yu Zanev
- Institute of Biophysics, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 21, 1113 Sofia, Bulgaria
| | - P V Sane
- Jain Irrigation Systems Limited, Jain Hills, Jalgaon 425001, India
| | - N P A Huner
- Department of Biology and the Biotron Centre for Experimental Climate Change Research, University of Western Ontario, 1151 Richmond Street, N., London, Ontario N6A 5B7, Canada.
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20
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Jagusiak A, Konieczny L, Krol M, Marszalek P, Piekarska B, Piwowar P, Roterman I, Rybarska J, Stopa B, Zemanek G. Intramolecular immunological signal hypothesis revived--structural background of signalling revealed by using Congo Red as a specific tool. Mini Rev Med Chem 2015; 14:1104-13. [PMID: 25429660 PMCID: PMC4440395 DOI: 10.2174/1389557514666141127150803] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 10/11/2014] [Accepted: 11/11/2014] [Indexed: 11/22/2022]
Abstract
Micellar structures formed by self-assembling Congo red molecules bind to proteins penetrating into functionrelated
unstable packing areas. Here, we have used Congo red - a supramolecular protein ligand to investigate how the
intramolecular structural changes that take place in antibodies following antigen binding lead to complement activation.
According to our findings, Congo red binding significantly enhances the formation of antigen-antibody complexes. As a
result, even low-affinity transiently binding antibodies can participate in immune complexes in the presence of Congo
red, although immune complexes formed by these antibodies fail to trigger the complement cascade. This indicates that
binding of antibodies to the antigen may not, by itself, fulfill the necessary conditions to generate the signal which
triggers effector activity. These findings, together with the results of molecular dynamics simulation studies, enable us to
conclude that, apart from the necessary assembling of antibodies, intramolecular structural changes generated by
strains which associate high- affinity bivalent antibody fitting to antigen determinants are also required to cross the
complement activation threshold.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - G Zemanek
- Department of Bioinformatics and Telemedicine, Jagiellonian University, Medical College, Lazarza 16, 31- 530 Krakow, Poland..
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21
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Rybicka A, Mucha J, Majchrzak K, Taciak B, Hellmen E, Motyl T, Krol M. Analysis of microRNA expression in canine mammary cancer stem-like cells indicates epigenetic regulation of transforming growth factor-beta signaling. J Physiol Pharmacol 2015; 66:29-37. [PMID: 25716962] [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] [Received: 08/20/2014] [Accepted: 11/25/2014] [Indexed: 06/04/2023]
Abstract
Cancer stem cells (CSCs) display both unique self-renewal ability as well as the ability to differentiate into many kinds of cancer cells. They are supposed to be responsible for cancer initiation, recurrence and drug resistance. Despite the fact that a variety of methods are currently employed in order to target CSCs, little is known about the regulation of their phenotype and biology by miRNAs. The aim of our study was to assess miRNA expression in canine mammary cancer stem-like cells (expressing stem cell antigen 1, Sca-1; CD44 and EpCAM) sorted from canine mammary tumour cell lines (CMT-U27, CMT-309 and P114). In order to prove their stem-like phenotype, we conducted a colony formation assay that confirmed their ability to form colonies from a single cell. Profiles of miRNA expression were investigated using Agilent custom-designed microarrays. The results were further validated by real-time rt-PCR analysis of expression of randomly selected miRNAs. Target genes were indicated and analysed using Kioto Encyclopedia of Genes and Genomes (KEGG) and BioCarta databases. The results revealed 24 down-regulated and nine up-regulated miRNAs in cancer stem-like cells compared to differentiated tumour cells. According to KEGG and BioCarta databases, target genes (n=240) of significantly down-regulated miRNAs were involved in transforming growth factor-beta signaling, mitogen-activated protein kinases (MAPK) signaling pathway, anaplastic lymphoma receptor tyrosine kinase (ALK) and peroxisome proliferator-activated receptor gamma, coactivator 1 alpha (PGC1A) pathways. The analysis of single-gene overlapping with different pathways showed that the most important genes were: TGFBR1, TGFBR2, SOS1, CHUK, PDGFRA, SMAD2, MEF2A, MEF2C and MEF2D. All of them are involved in tumor necrosis factor-beta signaling and may indicate its important role in cancer stem cell biology. Increased expression of TGFBR2, SMAD2, MEF2A and MEF2D in canine mammary cancer stem-like cells was further confirmed by real-time-qPCR. The results of our study point at epigenetic differences between cancer stem-like cells and differentiated tumour cells, which may be important not only for veterinary medicine but also for comparative oncology.
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Affiliation(s)
- A Rybicka
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw, Poland.
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Martikainen JA, Krol M, Rantalaiho V, Kautiainen H, Puolakka K. Long-Term Work Productivity Costs Among Subjects With Early Rheumatoid Arthritis - A Nationwide Analysis Based on 7,831 Subjects' Sickness Absence Days and Income. Value Health 2014; 17:A383. [PMID: 27200859 DOI: 10.1016/j.jval.2014.08.2628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
| | - M Krol
- Erasmus University, Rotterdam, The Netherlands
| | | | - H Kautiainen
- Helsinki University Central Hospital, Helsinki, Finland
| | - K Puolakka
- Lappeenranta Central Hospital, Lappeenranta, Finland
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Affiliation(s)
- C Bouwmans
- Erasmus University Rotterdam, Rotterdam, The Netherlands
| | - M Krol
- Erasmus University, Rotterdam, The Netherlands
| | - W Brouwer
- Erasmus University, Rotterdam, The Netherlands
| | - J L Severens
- Erasmus University Rotterdam, Rotterdam, The Netherlands
| | | | - L Hakkaart
- Erasmus University Rotterdam, Rotterdam, The Netherlands
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Riemsma R, Al M, Corro Ramos I, Deshpande SN, Armstrong N, Lee YC, Ryder S, Noake C, Krol M, Oppe M, Kleijnen J, Severens H. SeHCAT [tauroselcholic (selenium-75) acid] for the investigation of bile acid malabsorption and measurement of bile acid pool loss: a systematic review and cost-effectiveness analysis. Health Technol Assess 2014; 17:1-236. [PMID: 24351663 DOI: 10.3310/hta17610] [Citation(s) in RCA: 31] [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: 12/25/2022] Open
Abstract
BACKGROUND The principal diagnosis/indication for this assessment is chronic diarrhoea due to bile acid malabsorption (BAM). Diarrhoea can be defined as the abnormal passage of loose or liquid stools more than three times daily and/or a daily stool weight > 200 g per day and is considered to be chronic if it persists for more than 4 weeks. The cause of chronic diarrhoea in adults is often difficult to ascertain and patients may undergo several investigations without a definitive cause being identified. BAM is one of several causes of chronic diarrhoea and results from failure to absorb bile acids (which are required for the absorption of dietary fats and sterols in the intestine) in the distal ileum. OBJECTIVE For people with chronic diarrhoea with unknown cause and in people with Crohn's disease and chronic diarrhoea with unknown cause (i.e. before resection): (1) What are the effects of selenium-75-homocholic acid taurine (SeHCAT) compared with no SeHCAT in terms of chronic diarrhoea, other health outcomes and costs? (2) What are the effects of bile acid sequestrants (BASs) compared with no BASs in people with a positive or negative SeHCAT test? (3) Does a positive or negative SeHCAT test predict improvement in terms of chronic diarrhoea, other health outcomes and costs? DATA SOURCES A systematic review was conducted to summarise the evidence on the clinical effectiveness of SeHCAT for the assessment of BAM and the measurement of bile acid pool loss. Search strategies were based on target condition and intervention, as recommended in the Centre for Reviews and Dissemination (CRD) guidance for undertaking reviews in health care and the Cochrane Handbook for Diagnostic Test Accuracy Reviews. The following databases were searched up to April 2012: MEDLINE; MEDLINE In-Process & Other Non-Indexed Citations; EMBASE; the Cochrane Databases; Database of Abstracts of Reviews of Effects; Health Technology Assessment (HTA) Database; and Science Citation Index. Research registers and conference proceedings were also searched. REVIEW METHODS Systematic review methods followed the principles outlined in the CRD guidance for undertaking reviews in health care and the National Institute for Health and Care Excellence (NICE) Diagnostic Assessment Programme interim methods statement. In the health economic analysis, the cost-effectiveness of SeHCAT for the assessment of BAM, in patients with chronic diarrhoea, was estimated in two different populations. The first is the population of patients with chronic diarrhoea with unknown cause and symptoms suggestive of diarrhoea-predominant irritable bowel syndrome (IBS-D) and the second population concerns patients with Crohn's disease without ileal resection with chronic diarrhoea. For each population, three models were combined: (1) a short-term decision tree that models the diagnostic pathway and initial response to treatment (first 6 months); (2) a long-term Markov model that estimates the lifetime costs and effects for patients initially receiving BAS; and (3) a long-term Markov model that estimates the lifetime costs and effects for patients initially receiving regular treatment (IBS-D treatment in the first population and Crohn's treatment in the second population). Incremental cost-effectiveness ratios were estimated as additional cost per additional responder in the short term (first 6 months) and per additional quality-adjusted life-year (QALY) in the long term (lifetime). RESULTS We found three studies assessing the relationship between the SeHCAT test and response to treatment with cholestyramine. However, the studies had small numbers of patients with unknown cause chronic diarrhoea, and they used different cut-offs to define BAM. For the short term (first 6 months), when trial of treatment is not considered as a comparator, the optimal choice depends on the willingness to pay for an additional responder. For lower values (between £1500 and £4600) the choice will be no SeHCAT in all scenarios; for higher values either SeHCAT 10% or SeHCAT 15% becomes cost-effective. For the lifetime perspective, the various scenarios showed widely differing results: in the threshold range of £20,000-30,000 per QALY gained we found as optimal choice either no SeHCAT, SeHCAT 5% (only IBS-D) or SeHCAT 15%. When trial of treatment is considered a comparator, the analysis showed that for the short term, trial of treatment is the optimal choice across a range of scenarios. For the lifetime perspective with trial of treatment, again the various scenarios show widely differing results. Depending on the scenario, in the threshold range of £20,000-30,000 per QALY gained, we found as optimal choice either trial of treatment, no SeHCAT or SeHCAT 15%. CONCLUSIONS In conclusion, the various analyses show that for both populations considerable decision uncertainty exists and that no firm conclusions can be formulated about which strategy is optimal. Standardisation of the definition of a positive SeHCAT test should be the first step in assessing the usefulness of this test. As there is no reference standard for the diagnosis of BAM and SeHCAT testing provides a continuous measure of metabolic function, diagnostic test accuracy (DTA) studies are not the most appropriate study design. However, in studies where all patients are tested with SeHCAT and all patients are treated with BASs, response to treatment can provide a surrogate reference standard; further DTA studies of this type may provide information on the ability of SeHCAT to predict response to BASs. A potentially more informative option would be multivariate regression modelling of treatment response (dependent variable), with SeHCAT result and other candidate clinical predictors as covariates. Such a study design could also inform the definition of a positive SeHCAT result. STUDY REGISTRATION The study is registered as PROSPERO CRD42012001911. FUNDING The National Institute for Health Research Health Technology Assessment programme.
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Affiliation(s)
- R Riemsma
- Kleijnen Systematic Reviews Ltd Erasmus University Maastricht University, York Rotterdam Maastricht, UK Netherlands Netherlands
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Krol M, Sixma H, Meerdink J, Wiersma H, Rademakers J. Exploring young patients’ perspectives on rehabilitation care: methods and challenges of organizing focus groups for children and adolescents. Child Care Health Dev 2014; 40:507-14. [PMID: 25028746 DOI: 10.1111/cch.12095] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [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: 11/29/2022]
Abstract
BACKGROUND In research on quality of care, the experiences of children and (pre)adolescents are usually assessed by asking their parents. However, these young patients may have preferences of their own, and their experiences do not necessarily concur with those of their parents. Therefore, our research aimed to give young patients an opportunity to speak up for themselves. METHODS Focus group meetings and online focus groups were organized for two age groups (8–11 and 12–15 years) of young patients from two Dutch rehabilitation centres, with the use of a tailored interview technique. The feasibility and applicability of both types of focus groups were assessed. RESULTS For both types of focus groups, recruitment proved a major problem. The focus group meetings with (pre)adolescents proved both feasible and applicable in obtaining information regarding the preferences and experiences towards rehabilitation care. Regarding children's meetings, there were mixed results. The setting suited most of them, but some were more anxious. In general, online focus groups were less successful than expected for both age groups. CONCLUSIONS Possibilities for enhancing the recruitment rate should be considered, as the low participation rates limited generalizability of focus group results. The tailored design proved useful for obtaining relevant input from (pre)adolescents through meetings, but, especially for children, repeated meetings or other locations (e.g. at home) could be considered. This may make participants more at ease. For both age groups, the online focus groups proved far less useful, in terms of participation.
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Affiliation(s)
- M. Krol
- Patient Experiences and Evaluations; NIVEL; Utrecht The Netherlands
| | - H. Sixma
- Patient Experiences and Evaluations; NIVEL; Utrecht The Netherlands
| | | | - H. Wiersma
- LSR (National Organisation of Client Councils); Utrecht The Netherlands
| | - J. Rademakers
- Patient Experiences and Evaluations; NIVEL; Utrecht The Netherlands
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Vermaire JH, van Loveren C, Brouwer WBF, Krol M. Value for money: economic evaluation of two different caries prevention programmes compared with standard care in a randomized controlled trial. Caries Res 2014; 48:244-53. [PMID: 24526078 DOI: 10.1159/000356859] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2013] [Accepted: 10/21/2013] [Indexed: 11/19/2022] Open
Abstract
A cost-effectiveness analysis was conducted during a 3-year randomized controlled clinical trial in a general dental practice in the Netherlands in which 230 6-year-old children (± 3 months) were assigned to either regular dental care, an increased professional fluoride application (IPFA) programme or a non-operative caries treatment and prevention (NOCTP) programme. Information on resource use during the 3-year period was documented by the dental nurse at every patient visit, such as treatment time, travel time and travel distance. Caries increment scores (at D3MFS level) were used to assess effectiveness. Cost calculations were performed using bottom-up micro-costing. Incremental cost-effectiveness ratios (ICERs) were expressed as additional average costs per prevented DMFS. The ICERs compared with regular dental care from a health care system perspective and societal perspective were, respectively, EUR 269 and EUR 1,369 per prevented DMFS in the IPFA programme, and EUR 30 and EUR 100 in the NOCTP programme. The largest investments for the NOCTP group were made in the first year of the study; they decreased in the second and equalled the costs of control group in third year of the study. From both medical and economic points of view, the NOCTP strategy may be considered the preferred strategy for caries prevention.
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Affiliation(s)
- J H Vermaire
- TNO Life Style - Behavioural and Societal Sciences, Leiden, The Netherlands
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Krol M, de Boer D, Plass AM, Rademakers J. Health care experiences and preferences of Dutch chronic pain patients: a call for coordination and continuity. Eur J Public Health 2013. [DOI: 10.1093/eurpub/ckt123.100] [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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Trznadel S, Buszman P, Milewski K, Krol M, Gorycki B, Prokopczuk J, Zurakowski A, Wojakowski W, Buszman P. Everolimus versus paclitaxel eluting biodegradable polymer coated stents for coronary revascularisation: clinical and angiographic results from the pivotal randomised trial. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.p3050] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Millaleo R, Reyes-Díaz M, Alberdi M, Ivanov AG, Krol M, Hüner NPA. Excess manganese differentially inhibits photosystem I versus II in Arabidopsis thaliana. J Exp Bot 2013; 64:343-54. [PMID: 23183256 PMCID: PMC3528040 DOI: 10.1093/jxb/ers339] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The effects of exposure to increasing manganese concentrations (50-1500 µM) from the start of the experiment on the functional performance of photosystem II (PSII) and photosystem I (PSI) and photosynthetic apparatus composition of Arabidopsis thaliana were compared. In agreement with earlier studies, excess Mn caused minimal changes in the PSII photochemical efficiency measured as F(v)/F(m), although the characteristic peak temperature of the S(2/3)Q(B) (-) charge recombinations was shifted to lower temperatures at the highest Mn concentration. SDS-PAGE and immunoblot analyses also did not exhibit any significant change in the relative abundance of PSII-associated polypeptides: PSII reaction centre protein D1, Lhcb1 (major light-harvesting protein of LHCII complex), and PsbO (OEC33, a 33 kDa protein of the oxygen-evolving complex). In addition, the abundance of Rubisco also did not change with Mn treatments. However, plants grown under excess Mn exhibited increased susceptibility to PSII photoinhibition. In contrast, in vivo measurements of the redox transients of PSI reaction centre (P700) showed a considerable gradual decrease in the extent of P700 photooxidation (P700(+)) under increased Mn concentrations compared to control. This was accompanied by a slower rate of P700(+) re-reduction indicating a downregulation of the PSI-dependent cyclic electron flow. The abundance of PSI reaction centre polypeptides (PsaA and PsaB) in plants under the highest Mn concentration was also significantly lower compared to the control. The results demonstrate for the first time that PSI is the major target of Mn toxicity within the photosynthetic apparatus of Arabidopsis plants. The possible involvement mechanisms of Mn toxicity targeting specifically PSI are discussed.
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Affiliation(s)
- R. Millaleo
- Programa de Doctorado en Ciencias de Recursos Naturales, Universidad de La Frontera, Temuco, Chile
| | - M. Reyes-Díaz
- Departamento de Ciencias Químicas y Recursos Naturales; Facultad de Ingeniería, Ciencias y Administración, Universidad de La Frontera,Temuco, Chile
- Center of Plant, Soil Interaction and Natural Resources Biotechnology, Scientific and Technological Bioresource Nucleus (BIOREN-UFRO), Universidad de La Frontera, Temuco, Chile
| | - M. Alberdi
- Departamento de Ciencias Químicas y Recursos Naturales; Facultad de Ingeniería, Ciencias y Administración, Universidad de La Frontera,Temuco, Chile
- Center of Plant, Soil Interaction and Natural Resources Biotechnology, Scientific and Technological Bioresource Nucleus (BIOREN-UFRO), Universidad de La Frontera, Temuco, Chile
| | - A. G. Ivanov
- Department of Biology and The Biotron Centre for Experimental Climate Change Research, Western University, London, Ontario, N6A 5B7, Canada
| | - M. Krol
- Department of Biology and The Biotron Centre for Experimental Climate Change Research, Western University, London, Ontario, N6A 5B7, Canada
| | - N. P. A. Hüner
- Department of Biology and The Biotron Centre for Experimental Climate Change Research, Western University, London, Ontario, N6A 5B7, Canada
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Weiner M, Reich D, Lin H, Krol M, Fischer G. Influence of increased left ventricular myocardial mass on early and late mortality after cardiac surgery. Br J Anaesth 2013; 110:41-6. [DOI: 10.1093/bja/aes299] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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Houweling S, Badawy B, Baker DF, Basu S, Belikov D, Bergamaschi P, Bousquet P, Broquet G, Butler T, Canadell JG, Chen J, Chevallier F, Ciais P, Collatz GJ, Denning S, Engelen R, Enting IG, Fischer ML, Fraser A, Gerbig C, Gloor M, Jacobson AR, Jones DBA, Heimann M, Khalil A, Kaminski T, Kasibhatla PS, Krakauer NY, Krol M, Maki T, Maksyutov S, Manning A, Meesters A, Miller JB, Palmer PI, Patra P, Peters W, Peylin P, Poussi Z, Prather MJ, Randerson JT, Röckmann T, Rödenbeck C, Sarmiento JL, Schimel DS, Scholze M, Schuh A, Suntharalingam P, Takahashi T, Turnbull J, Yurganov L, Vermeulen A. Iconic CO
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Time Series at Risk. Science 2012; 337:1038-40. [DOI: 10.1126/science.337.6098.1038-b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- Sander Houweling
- SRON Netherlands Institute for Space Research, 3584 CA, Utrecht, Netherlands
- Institute for Marine and Atmospheric Research Utrecht, 3584 CC Utrecht, Netherlands
| | - Bakr Badawy
- Max-Planck-Institute for Biogeochemistry, 07745, Jena, Germany
| | - David F. Baker
- Cooperative Institute for Research in the Atmosphere, Colorado State University, Fort Collins, CO 80523–1375, USA
| | - Sourish Basu
- SRON Netherlands Institute for Space Research, 3584 CA, Utrecht, Netherlands
- Institute for Marine and Atmospheric Research Utrecht, 3584 CC Utrecht, Netherlands
| | - Dmitry Belikov
- National Institute for Environmental Studies, Tsukuba, 305-8506, Japan
| | | | - Philippe Bousquet
- Laboratoire des Sciences du Climat et de l'Environnement, Unité mixte CEA, UVSQ, CNRS, 91191, Gif-sur-Yvette, France
| | - Gregoire Broquet
- Laboratoire des Sciences du Climat et de l'Environnement, Unité mixte CEA, UVSQ, CNRS, 91191, Gif-sur-Yvette, France
| | - Tim Butler
- Institute for Advanced Sustainability Studies, 14467, Potsdam, Germany
| | - Josep G. Canadell
- Global Carbon Project, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Canberra, ACT 2601, Australia
| | - Jing Chen
- University of Toronto, Toronto, ON, M5S 1A7, Canada
| | - Frederic Chevallier
- Laboratoire des Sciences du Climat et de l'Environnement, Unité mixte CEA, UVSQ, CNRS, 91191, Gif-sur-Yvette, France
| | - Philippe Ciais
- Laboratoire des Sciences du Climat et de l'Environnement, Unité mixte CEA, UVSQ, CNRS, 91191, Gif-sur-Yvette, France
| | | | - Scott Denning
- Cooperative Institute for Research in the Atmosphere, Colorado State University, Fort Collins, CO 80523–1375, USA
| | - Richard Engelen
- European Centre for Medium-Range Weather Forecasts, Shinfield Park, Reading, RG2 9AX, UK
| | - Ian G. Enting
- ARC Centre of Excellence in the Mathematics and Statistics of Complex Systems, University of Melbourne, Victoria 3010, Australia
| | - Marc L. Fischer
- Lawrence Berkeley National Laboratory, Washington, DC 20024, USA
| | | | | | - Manuel Gloor
- Earth and Biosphere Institute, School of Geography, University of Leeds, Leeds LS2 9JT, UK
| | - Andrew R. Jacobson
- Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO 80309, USA
- NOAA Earth System Research Laboratory, Boulder, CO 80305, USA
| | | | - Martin Heimann
- Max-Planck-Institute for Biogeochemistry, 07745, Jena, Germany
| | - Aslam Khalil
- Portland State University, Portland, OR 97207, USA
| | | | | | - Nir Y. Krakauer
- Department of Civil Engineering, City College of New York, New York, NY 10031, USA
| | - Maarten Krol
- SRON Netherlands Institute for Space Research, 3584 CA, Utrecht, Netherlands
- Institute for Marine and Atmospheric Research Utrecht, 3584 CC Utrecht, Netherlands
- Meteorology and Air Quality, Wageningen University and Research Center, 6708 PB Wageningen, Netherlands
| | - Takashi Maki
- Environmental and Applied Meteorology Research Department, Meteorol ogical Research Institute, Tskuba, Japan
| | - Shamil Maksyutov
- National Institute for Environmental Studies, Tsukuba, 305-8506, Japan
| | - Andrew Manning
- University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, UK
| | | | - John B. Miller
- Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO 80309, USA
- NOAA Earth System Research Laboratory, Boulder, CO 80305, USA
| | | | - Prabir Patra
- Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology, Yokohama, 236-0001, Japan
| | - Wouter Peters
- Meteorology and Air Quality, Wageningen University and Research Center, 6708 PB Wageningen, Netherlands
| | - Philippe Peylin
- Laboratoire des Sciences du Climat et de l'Environnement, Unité mixte CEA, UVSQ, CNRS, 91191, Gif-sur-Yvette, France
| | | | | | | | - Thomas Röckmann
- Institute for Marine and Atmospheric Research Utrecht, 3584 CC Utrecht, Netherlands
| | | | | | | | | | - Andrew Schuh
- Cooperative Institute for Research in the Atmosphere, Colorado State University, Fort Collins, CO 80523–1375, USA
| | | | - Taro Takahashi
- Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY 10964–8000, USA
| | | | - Leonid Yurganov
- University of Maryland Baltimore County, Baltimore, MD 21250, USA
| | - Alex Vermeulen
- Energieonderzoek Centrum Nederland, 1755 ZG Petten, Netherlands
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Koffi B, Schulz M, Bréon FM, Griesfeller J, Winker D, Balkanski Y, Bauer S, Berntsen T, Chin M, Collins WD, Dentener F, Diehl T, Easter R, Ghan S, Ginoux P, Gong S, Horowitz LW, Iversen T, Kirkevåg A, Koch D, Krol M, Myhre G, Stier P, Takemura T. Application of the CALIOP layer product to evaluate the vertical distribution of aerosols estimated by global models: AeroCom phase I results. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/2011jd016858] [Citation(s) in RCA: 140] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Offman MN, Krol M, Rost B, Silman I, Sussman, JL, Futerman AH. Comparison of a molecular dynamics model with the X-ray structure of the N370S acid- -glucosidase mutant that causes Gaucher disease. Protein Eng Des Sel 2011; 24:773-5. [DOI: 10.1093/protein/gzr032] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Bergamaschi P, Krol M, Meirink JF, Dentener F, Segers A, van Aardenne J, Monni S, Vermeulen AT, Schmidt M, Ramonet M, Yver C, Meinhardt F, Nisbet EG, Fisher RE, O'Doherty S, Dlugokencky EJ. Inverse modeling of European CH4emissions 2001–2006. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2010jd014180] [Citation(s) in RCA: 106] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Bergamaschi P, Frankenberg C, Meirink JF, Krol M, Villani MG, Houweling S, Dentener F, Dlugokencky EJ, Miller JB, Gatti LV, Engel A, Levin I. Inverse modeling of global and regional CH4emissions using SCIAMACHY satellite retrievals. ACTA ACUST UNITED AC 2009. [DOI: 10.1029/2009jd012287] [Citation(s) in RCA: 247] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Rao NAS, van Wolferen ME, Gracanin A, Bhatti SFM, Krol M, Holstege FC, Mol JA. Gene expression profiles of progestin-induced canine mammary hyperplasia and spontaneous mammary tumors. J Physiol Pharmacol 2009; 60 Suppl 1:73-84. [PMID: 19609016] [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] [Received: 01/09/2009] [Accepted: 04/15/2009] [Indexed: 05/28/2023]
Abstract
Spontaneous mammary tumors are the most prevalent type of neoplasms in women as well as in female dogs. Although ovarian hormones estrogen and progesterone are known to play a key role in mammary tumorigenesis, conflicting reports have been obtained from in vivo and in vitro studies concerning the role of especially progesterone in mammary tumorigenesis. Prolonged exposure to high concentrations of progesterone during the unusually long luteal phase of the estrous cycle is suspected to be the key event in canine mammary tumorigenesis. Accordingly, previous studies have shown the development of mammary hyperplasia in dogs upon prolonged progestin administration. In this study, a dog-specific cDNA microarray was used to identify oncogenic determinants in progestin-induced canine hyperplasia (CMH) and spontaneous mammary tumors (CMC) by comparing expression profiles to those obtained from mammary glands of healthy dogs. The CMH profile showed elevated expression of genes involved in cell proliferation such as PCNA, NPY, RAN and also alterations in expression of transcription factors and cell adhesion molecules. Whereas in CMC, major alterations to the expression of genes involved in cell motility, cytoskeletal organization and extra cellular matrix production was evident besides differential expression of cell proliferation inducing genes. The overall gene expression profile of CMH was related to cell proliferation where as that of CMC was associated with both cell proliferation as well as neoplastic transformation. In conclusion, our findings support a strong cell proliferation inducing potential of progestins in the canine mammary gland. Moreover, deregulated genes identified in CMC are potentially involved in their malignant and may serve as prospective therapeutic targets.
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Affiliation(s)
- N A S Rao
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, The Netherlands
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Krol M, Pawlowski KM, Skierski J, Rao NAS, Hellmen E, Mol JA, Motyl T. Transcriptomic profile of two canine mammary cancer cell lines with different proliferative and anti-apoptotic potential. J Physiol Pharmacol 2009; 60 Suppl 1:95-106. [PMID: 19609018] [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] [Received: 01/09/2009] [Accepted: 04/15/2009] [Indexed: 05/28/2023]
Abstract
The aim of the study was to identify the genes responsible for the high growth rate and antiapoptotic potential in selected canine mammary cancer cells. cDNA canine microarrays were used to compare the transcriptome in simple carcinoma CMT-U27 and spindle-cell tumor CMT-U309 cell lines. In CMT-U27 cell line the growth rate (shorter cell cycle), anti-apoptotic potential (higher expression of Bcl-2) was higher and spontaneous and induced apoptosis was lower. Comparison of transcriptomes revealed 333 genes which expression differed similarly. We focused on genes involved in cell proliferation, adhesion and apoptosis, and selected 29 of them. The high growth rate and anti-apoptotic potential in CMT-U27 cells was associated with enhanced expression of genes (at the level of transcripts) involved in Ca(2+) signaling pathway (Calmodulin 1, 2, 3 and SPSB2) and growth hormone cellular pathway. The low-proliferative and pro-apoptotic phenotype of CMTU309 cells was more dependent on TGFbeta, neuregulin 1 pathways and adhesion-related molecules.
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Affiliation(s)
- M Krol
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences - SGGW, Poland.
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Pawlowski KM, Krol M, Majewska A, Badowska-Kozakiewicz A, Mol JA, Malicka E, Motyl T. Comparison of cellular and tissue transcriptional profiles in canine mammary tumor. J Physiol Pharmacol 2009; 60 Suppl 1:85-94. [PMID: 19609017] [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] [Received: 01/09/2009] [Accepted: 04/15/2009] [Indexed: 05/28/2023]
Abstract
Tumor-derived cell lines are widely used as in vitro cancer models. Cell lines historically served as the primary experimental model systems for exploration of tumor cell biology and pharmacology. However, their ability to accurately reflect the phenotype and genotype of the parental histology remains questionable, given the prevalence of documented cell line-specific cytogenetic changes. Sometimes cell line studies are interpreted in the context of artifacts introduced by selection and establishment of cell lines in vitro. This complication has led to difficulties in the extrapolation of biology observed in cell lines to tumor biology in vivo. The aim of our study was to compare gene expression profiles in canine mammary tumor tissue and cell cultures derived from those tumors using cDNA microarrays. Tumors of two different origins were used; chondrosarcoma and adenocarcinoma and their primary cell cultures. It has been found that cell culture gene expression profiles closely resembled those of their corresponding in vivo tumor. In adenocarcinoma and chondrosarcoma only 6.0% and 2.7% of genes respectively, have shown significant difference in expression. In the most cases the difference concerned up-regulation of gene expression in cell lines, particularly genes involved in: protein metabolism and modification, signal transduction and nucleotide, nucleoside and nucleic acid metabolism. These experiments revealed that transcriptome of our primary cell culture corresponds to transcriptome of its parental tumor tissue and for this reason cell culture represents the reliable in vitro model for oncogenomic and pharmacogenomic studies.
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Affiliation(s)
- K M Pawlowski
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences - SGGW, Poland
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Wesselink A, de Vriend H, Barneveld H, Krol M, Bijker W. Hydrology and hydraulics expertise in participatory processes for climate change adaptation in the Dutch Meuse. Water Sci Technol 2009; 60:583-595. [PMID: 19657153 DOI: 10.2166/wst.2009.412] [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] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Many scientists feel that scientific outcomes are not sufficiently taken into account in policy-making. The research reported in this paper shows what happens with scientific information during such a process. In 2001 the Dutch Ministry of Transport, Public Works and Water Management commissioned their regional office in Limburg to assess how flood management objectives could be achieved in future in the Dutch Meuse valley, assuming climate change will increase peak discharges. To ensure political support, regional discussion rounds were to help assess the measures previously identified. This paper discusses the ways in which hydrological and hydraulic expertise was input, understood and used in this assessment process. Project participants as a group had no trouble contesting assumptions and outcomes. Nevertheless, water expertise was generally accepted as providing facts, once basic choices such as starting situation had been discussed and agreed. The technical constraints determined that politically unacceptable measures would have to be selected to achieve the legally binding flood management objective. As a result, no additional space will be set aside for future flood management beyond the already reserved floodplain. In this case, political arguments clearly prevail over policy objectives, with hydraulic expertise providing decisive arbitration between the two.
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Affiliation(s)
- Anna Wesselink
- School of Earth and Environment, University of Leeds, Leeds LS2 9JT, West Yorkshire, UK. [corrected]
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Ivanov AG, Krol M, Zeinalov Y, Huner NPA, Sane PV. The lack of LHCII proteins modulates excitation energy partitioning and PSII charge recombination in Chlorina F2 mutant of barley. Physiol Mol Biol Plants 2008; 14:205-15. [PMID: 23572888 PMCID: PMC3550619 DOI: 10.1007/s12298-008-0020-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Analysis of the partitioning of absorbed light energy within PSII into fractions utilized by PSII photochemistry (ØPSII), thermally dissipated via ΔpH-and zeaxanthin-dependent energy quenching (ØNPQ) and constitutive non-photochemical energy losses (ØNO) was performed in wild type and F2 mutant of barley. The estimated energy partitioning of absorbed light to various pathways indicated that the fraction of ØPSII was slightly higher, while the proportion of thermally dissipated energy through ØNPQ was 38% lower in F2 mutant than in WT. In contrast, ØNO, i.e. the fraction of absorbed light energy dissipated by additional quenching mechanism(s) was 34% higher in F2 mutant. The increased proportion of ØNO correlated with narrowing the temperature gap (ΔT M) between S2/3QB- and S2QA- charge recombinations in F2 mutant as revealed by thermoluminescence measurements. We suggest that this would result in increased probability for an alternative non-radiative P680+QA- radical pair recombination pathway for energy dissipation within the reaction centre of PSII (reaction center quenching) and that this additional quenching mechanism might play an important role in photoprotection when the capacity for the primary, zeaxanthin-dependent non-photochemical quenching (ØNPQ) and state transitions pathways are restricted in the absence of LHCII polypeptides in F2 mutant.
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Affiliation(s)
- A. G. Ivanov
- />Department of Biology and The Biotron, University of Western Ontario, London, Ontario Canada N6A 5B7
| | - M. Krol
- />Department of Biology and The Biotron, University of Western Ontario, London, Ontario Canada N6A 5B7
| | - Y. Zeinalov
- />Institute of Biophysics, Acad. G. Bonchev Str., Bl. 21, 1113 Sofia, Bulgaria
| | - N. P. A. Huner
- />Department of Biology and The Biotron, University of Western Ontario, London, Ontario Canada N6A 5B7
| | - P. V. Sane
- />Jain Irrigation Systems Limited, Jain Hills, Jalgaon, 425 001 India
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de Laat ATJ, Gloudemans AMS, Aben I, Krol M, Meirink JF, van der Werf GR, Schrijver H. Correction to “Scanning Imaging Absorption Spectrometer for Atmospheric Chartography carbon monoxide total columns: Statistical evaluation and comparison with chemistry transport model results”. ACTA ACUST UNITED AC 2007. [DOI: 10.1029/2007jd009378] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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de Laat ATJ, Gloudemans AMS, Aben I, Krol M, Meirink JF, van der Werf GR, Schrijver H. Scanning Imaging Absorption Spectrometer for Atmospheric Chartography carbon monoxide total columns: Statistical evaluation and comparison with chemistry transport model results. ACTA ACUST UNITED AC 2007. [DOI: 10.1029/2006jd008256] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Bergamaschi P, Frankenberg C, Meirink JF, Krol M, Dentener F, Wagner T, Platt U, Kaplan JO, Körner S, Heimann M, Dlugokencky EJ, Goede A. Satellite chartography of atmospheric methane from SCIAMACHY on board ENVISAT: 2. Evaluation based on inverse model simulations. ACTA ACUST UNITED AC 2007. [DOI: 10.1029/2006jd007268] [Citation(s) in RCA: 232] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Dentener F, Stevenson D, Ellingsen K, Van Noije T, Schultz M, Amann M, Atherton C, Bell N, Bergmann D, Bey I, Bouwman L, Butler T, Cofala J, Collins B, Drevet J, Doherty R, Eickhout B, Eskes H, Fiore A, Gauss M, Hauglustaine D, Horowitz L, Isaksen ISA, Josse B, Lawrence M, Krol M, Lamarque JF, Montanaro V, Müller JF, Peuch VH, Pitari G, Pyle J, Rast S, Rodriguez I, Sanderson M, Savage NH, Shindell D, Strahan S, Szopa S, Sudo K, Van Dingenen R, Wild O, Zeng G. The global atmospheric environment for the next generation. Environ Sci Technol 2006; 40:3586-94. [PMID: 16786698 DOI: 10.1021/es0523845] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Air quality, ecosystem exposure to nitrogen deposition, and climate change are intimately coupled problems: we assess changes in the global atmospheric environment between 2000 and 2030 using 26 state-of-the-art global atmospheric chemistry models and three different emissions scenarios. The first (CLE) scenario reflects implementation of current air quality legislation around the world, while the second (MFR) represents a more optimistic case in which all currently feasible technologies are applied to achieve maximum emission reductions. We contrast these scenarios with the more pessimistic IPCC SRES A2 scenario. Ensemble simulations for the year 2000 are consistent among models and show a reasonable agreement with surface ozone, wet deposition, and NO2 satellite observations. Large parts of the world are currently exposed to high ozone concentrations and high deposition of nitrogen to ecosystems. By 2030, global surface ozone is calculated to increase globally by 1.5 +/- 1.2 ppb (CLE) and 4.3 +/- 2.2 ppb (A2), using the ensemble mean model results and associated +/-1 sigma standard deviations. Only the progressive MFR scenario will reduce ozone, by -2.3 +/- 1.1 ppb. Climate change is expected to modify surface ozone by -0.8 +/- 0.6 ppb, with larger decreases over sea than over land. Radiative forcing by ozone increases by 63 +/- 15 and 155 +/- 37 mW m(-2) for CLE and A2, respectively, and decreases by -45 +/- 15 mW m(-2) for MFR. We compute that at present 10.1% of the global natural terrestrial ecosystems are exposed to nitrogen deposition above a critical load of 1 g N m(-2) yr(-1). These percentages increase by 2030 to 15.8% (CLE), 10.5% (MFR), and 25% (A2). This study shows the importance of enforcing current worldwide air quality legislation and the major benefits of going further. Nonattainment of these air quality policy objectives, such as expressed by the SRES-A2 scenario, would further degrade the global atmospheric environment.
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Affiliation(s)
- F Dentener
- Joint Research Centre, Institute for Environment and Sustainability, via E. Fermi 1, 1-21020, Ispra, Italy.
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Ivanov AG, Sane PV, Krol M, Gray GR, Balseris A, Savitch LV, Oquist G, Hüner NPA. Acclimation to temperature and irradiance modulates PSII charge recombination. FEBS Lett 2006; 580:2797-802. [PMID: 16674953 DOI: 10.1016/j.febslet.2006.04.018] [Citation(s) in RCA: 39] [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] [Received: 03/14/2006] [Revised: 04/07/2006] [Accepted: 04/10/2006] [Indexed: 11/16/2022]
Abstract
Acclimation of wild type and the chlorina F2 mutant of barley to either high light or low temperature results in a 2- to 3-fold increase in non-photochemical quenching which occurred independently of either energy-dependent quenching (qE), xanthophyll cycle-mediated antenna quenching or state transitions. Results of in vivo thermoluminescence measurements used to address this conundrum indicated that excitation pressure regulates the temperature gap for S(2)Q(B)(-) and S(2)Q(A)(-) charge recombinations within photosystem II reaction centers. This is discussed in terms of photoprotection through non-radiative charge recombination.
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Affiliation(s)
- A G Ivanov
- Department of Biology and The Biotron, University of Western Ontario, London, Canada N6A 5B7
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Abstract
While interpretation of medical data is very often an ambiguous process, computers usually display results of recommendations, provided by both human experts and computer algorithms, as concrete data. This study proposes a visual presentation of relative degrees of uncertainty along with "standard" concrete medical data. A medical parameter (mean arterial pressure) is dynamically evaluated during surgery for being too low or too high. Fuzzy membership functions are utilized to display degrees of deviation in the form of a clear and concise pie chart. Thus, in the Operating Room the anesthesiologist can be provided with an easy statistical assessment of uncertainty of existing recommendations.
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Affiliation(s)
- M Krol
- Department of Anesthesiology, Mount Sinai School of Medicine, New York, New York 10029-6574, USA.
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Gros V, Williams J, Lawrence MG, von Kuhlmann R, van Aardenne J, Atlas E, Chuck A, Edwards DP, Stroud V, Krol M. Tracing the origin and ages of interlaced atmospheric pollution events over the tropical Atlantic Ocean with in situ measurements, satellites, trajectories, emission inventories, and global models. ACTA ACUST UNITED AC 2004. [DOI: 10.1029/2004jd004846] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- V. Gros
- Max Planck Institute for Chemistry; Mainz Germany
| | - J. Williams
- Max Planck Institute for Chemistry; Mainz Germany
| | | | | | | | - E. Atlas
- National Center for Atmospheric Research; Boulder Colorado USA
| | - A. Chuck
- School of Environmental Sciences; University of East Anglia; Norwich UK
| | - D. P. Edwards
- National Center for Atmospheric Research; Boulder Colorado USA
| | - V. Stroud
- National Center for Atmospheric Research; Boulder Colorado USA
| | - M. Krol
- Institute for Marine and Atmospheric Research Utrecht; Utrecht University; Utrecht Netherlands
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Krol M, Lelieveld J. Can the variability in tropospheric OH be deduced from measurements of 1,1,1-trichloroethane (methyl chloroform)? ACTA ACUST UNITED AC 2003. [DOI: 10.1029/2002jd002423] [Citation(s) in RCA: 94] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Maarten Krol
- Institute for Marine and Atmospheric Research Utrecht; Utrecht Netherlands
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Zhao S, Shatsman S, Ayodeji B, Geer K, Tsegaye G, Krol M, Gebregeorgis E, Shvartsbeyn A, Russell D, Overton L, Jiang L, Dimitrov G, Tran K, Shetty J, Malek JA, Feldblyum T, Nierman WC, Fraser CM. Mouse BAC ends quality assessment and sequence analyses. Genome Res 2001; 11:1736-45. [PMID: 11591651 PMCID: PMC311142 DOI: 10.1101/gr.179201] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A large-scale BAC end-sequencing project at The Institute for Genomic Research (TIGR) has generated one of the most extensive sets of sequence markers for the mouse genome to date. With a sequencing success rate of >80%, an average read length of 485 bp, and ABI3700 capillary sequencers, we have generated 449,234 nonredundant mouse BAC end sequences (mBESs) with 218 Mb total from 257,318 clones from libraries RPCI-23 and RPCI-24, representing 15x clone coverage, 7% sequence coverage, and a marker every 7 kb across the genome. A total of 191,916 BACs have sequences from both ends providing 12x genome coverage. The average Q20 length is 406 bp and 84% of the bases have phred quality scores > or = 20. RPCI-24 mBESs have more Q20 bases and longer reads on average than RPCI-23 sequences. ABI3700 sequencers and the sample tracking system ensure that > 95% of mBESs are associated with the right clone identifiers. We have found that a significant fraction of mBESs contains L1 repeats and approximately 48% of the clones have both ends with > or = 100 bp contiguous unique Q20 bases. About 3% mBESs match ESTs and > 70% of matches were conserved between the mouse and the human or the rat. Approximately 0.1% mBESs contain STSs. About 0.2% mBESs match human finished sequences and > 70% of these sequences have EST hits. The analyses indicate that our high-quality mouse BAC end sequences will be a valuable resource to the community.
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Affiliation(s)
- S Zhao
- The Institute for Genomic Research, Rockville, Maryland 20850, USA.
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