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Wagner N, Håkansson E, Wahler S, Panke S, Bechtold M. Multi-objective optimization for the economic production of d-psicose using simulated moving bed chromatography. J Chromatogr A 2015; 1398:47-56. [PMID: 25943832 DOI: 10.1016/j.chroma.2015.04.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 04/01/2015] [Accepted: 04/05/2015] [Indexed: 12/31/2022]
Abstract
The biocatalytic production of rare carbohydrates from available sugar sources rapidly gains interest as a route to acquire industrial amounts of rare sugars for food and fine chemical applications. Here we present a multi-objective optimization procedure for a simulated moving bed (SMB) process for the production of the rare sugar d-psicose from enzymatically produced mixtures with its epimer d-fructose. First, model parameters were determined using the inverse method and experimentally validated on a 2-2-2-2 lab-scale SMB plant. The obtained experimental purities (PUs) were in excellent agreement with the simulated data derived from a transport-dispersive true-moving bed model demonstrating the feasibility of the proposed design. In the second part the performance of the separation was investigated in a multi-objective optimization study addressing the cost-contributing performance parameters productivity (PR) and desorbent requirement (DR) as a function of temperature. While rare sugar SMB operation under conditions of low desorbent consumption was found to be widely unaffected by temperature, SMB operation focusing on increased PR significantly benefited from high temperatures, with possible productivities increasing from 3.4kg(Lday)(-1) at 20°C to 5kg(Lday)(-1) at 70°C, indicating that decreased selectivity at higher temperatures could be fully compensated for by the higher mass transfer rates, as they translate into reduced switch times and hence higher PR. A DR/PR Pareto optimization suggested a similar but even more pronounced trend also under relaxed PU requirements, with the PR increasing from 4.3kg(Lday)(-1) to a maximum of 7.8kg(Lday)(-1) for SMB operation at 50°C when the PU of the non-product stream was reduced from 99.5% to 90%. Based on the in silico optimization results experimental SMB runs were performed yielding considerable PRs of 1.9 (30°C), 2.4 (50°C) and 2.6kg(Lday)(-1) (70°C) with rather low DR (27L per kg of rare sugar produced) on a lab-scale SMB installation.
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Cañas NA, Baltazar AL, Morais MA, Freitag T, Wagner N, Friedrich K. Fabrication of sulfur cathodes by wet-powder spraying and the understanding of degradation. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.01.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Wagner N, Wyler-Lazarevic CA, Yerly S, Samer C, Peytavin G, Posfay-Barbe KM, Calmy A, Ambrosioni J. Dolutegravir-based antiretroviral therapy in a severely overweight child with a multidrug-resistant human immunodeficiency virus infection. A case report and review. New Microbes New Infect 2015; 6:1-4. [PMID: 26082840 PMCID: PMC4430707 DOI: 10.1016/j.nmni.2015.02.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 02/02/2015] [Accepted: 02/18/2015] [Indexed: 12/03/2022] Open
Abstract
The management of multidrug-resistant human immunodeficiency virus (MDR HIV) infections in children is particularly challenging due to the lack of experience with new drugs. Dolutegravir, combined with an optimized antiretroviral background therapy, is promising for the treatment of MDR HIV and has been approved recently for adults and adolescents. Data for children are extremely limited. We describe the efficacy, safety and plasmatic levels of a dolutegravir-based, complex active antiretroviral treatment regimen in a severely overweight 11-year-old child infected with an MDR HIV strain.
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Rieger M, Wagner N. Child health, its dynamic interaction with nutrition and health memory--evidence from Senegal. ECONOMICS AND HUMAN BIOLOGY 2015; 16:135-145. [PMID: 24703960 DOI: 10.1016/j.ehb.2014.03.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Revised: 03/04/2014] [Accepted: 03/05/2014] [Indexed: 06/03/2023]
Abstract
Child malnutrition is pervasive in developing countries and anthropometric measures such as weight-for-height and height-for-age have proven reliable indicators of short term malnutrition and stunting. Rather than studying these indicators separately, we look at their interaction and carve out child health dynamics. Considering height-for-age a child's health stock and weight-for-lagged height a proxy for nutritional inputs, we develop a child health production function that features self-productivity of past health stocks and contemporaneous nutritional inputs. We test the model on a Senegalese panel of 271 children between 0 and 5 years employing dynamic panel methods to control for endogeneity in the production function. In line with previous evidence, we find that children can partially catch-up from malnutrition spells. Yet, child health stocks also deplete quickly and need constant updating in the form of nutrition. This demonstrates the importance of health memory and that malnutrition cannot be fought with snapshot interventions. Consequently, sustainable nutrition interventions have to be long term and yield higher returns the earlier they reach children.
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Benkali K, Leoni M, Rony F, Bouer R, Fernando A, Graeber M, Wagner N. Comparative pharmacokinetics and bioavailability of brimonidine following ocular and dermal administration of brimonidine tartrate ophthalmic solution and gel in patients with moderate-to-severe facial erythema associated with rosacea. Br J Dermatol 2014; 171:162-9. [PMID: 24506775 DOI: 10.1111/bjd.12881] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/01/2014] [Indexed: 12/17/2022]
Abstract
BACKGROUND Persistent facial erythema is the most common primary pathological feature of rosacea, the only treatment for which is brimonidine tartrate (BT) gel. OBJECTIVES To assess the relative bioavailability of topical BT gel in comparison with the ophthalmic BT solution. METHODS A pharmacokinetic study was conducted to compare intraindividual systemic exposures after dermal application of BT gel (0·07%, 0·18% and 0·5%) under maximal use conditions in patients with moderate-to-severe facial erythema associated with rosacea, and administration of BT ophthalmic solution 0·2%. RESULTS Patients who received BT ophthalmic solution 0·2% three times a day for 1 day had a mean Cmax of 54 ± 28 pg mL(-1) and a mean 0-24-h area under the curve (AUC0-24 h ) of 568 ± 277 pg h mL(-1) . Topical application of BT gel for 29 days resulted in quantifiable systemic exposure in 22%, 48%, 71% and 79% of patients who received BT gel 0·07% twice daily, 0·18% once daily, 0·18% twice daily and 0·5% once daily, respectively. The mean Cmax values for the BT gels ranged between 13 and 25 pg mL(-1) , and mean AUC0-24 h values ranged between 42 and 290 pg h mL(-1) . Systemic exposure increased with applied dose, with no drug accumulation for the duration of treatment. The systemic exposure observed with the highest dose of BT gel (0·5% once daily) was significantly lower than the systemic levels observed for the ophthalmic solution. 0·2% apply for all the concentrations. CONCLUSIONS The systemic safety profile of BT gel may be considered better than that of the ophthalmic solution.
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Weibel Galluzzo C, Wagner N, Michel Y, Jackson Y, Chappuis F. [Emerging parasitic diseases]. REVUE MEDICALE SUISSE 2014; 10:1008-1013. [PMID: 24908745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Travels, migration and circulation of goods facilitate the emergence of new infectious diseases often unrecognized outside endemic areas. Most of emerging infections are of viral origin. Muscular Sarcocystis infection, an acute illness acquired during short trips to Malaysia, and Chagas disease, a chronic illness with long incubation period found among Latin American migrants, are two very different examples of emerging parasitic diseases. The former requires a preventive approach for travelers going to Malaysia and must be brought forth when they return with fever, myalgia and eosinophilia, while the latter requires a proactive attitude to screen Latin American migrant populations that may face difficulties in accessing care.
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Wagner N. Zeitschrift Molecular and Cellular Pediatrics. Monatsschr Kinderheilkd 2014. [DOI: 10.1007/s00112-013-3061-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Scheithauer S, Trepels-Kottek S, Häfner H, Keller D, Ittel T, Wagner N, Heimann K, Schoberer M, Schwarz R, Haase G, Waitschies B, Orlikowsky T, Lemmen S. Healthcare worker-related MRSA cluster in a German neonatology level III ICU: A true European story. Int J Hyg Environ Health 2014; 217:307-11. [DOI: 10.1016/j.ijheh.2013.07.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Revised: 07/01/2013] [Accepted: 07/02/2013] [Indexed: 11/29/2022]
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Honke N, Ohl K, Wiener A, Wagner N, Wüller S, Tenbrock K. PReS-FINAL-2085: The p38-mediated rapid downregulation of cell surface gp130 expression impairs IL-6 signaling in the synovial fluid of juvenile idiopathic arthritis patients. Pediatr Rheumatol Online J 2013. [PMCID: PMC4044227 DOI: 10.1186/1546-0096-11-s2-p97] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Verjans E, Wiener A, Ohl K, Wagner N, Uhlig S, Martin C, Tenbrock K. PReS-FINAL-2350: Overexpression of crem alpha leads to a higher inflammatory response in lps induced acute lung injury (ali) and might therefore trigger infectious complications in patients with autoimmune diseases. Pediatr Rheumatol Online J 2013. [PMCID: PMC4044451 DOI: 10.1186/1546-0096-11-s2-p340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Wagner N. [Greetings from DGKJ]. KLINISCHE PADIATRIE 2013; 225 Suppl 1:S6. [PMID: 23700059 DOI: 10.1055/s-0033-1337955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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G. Hansen G, Kerbl R, Zepp F, Wagner N, Beddies T. Neufassung des editorischen Hinweises in der Monatsschrift Kinderheilkunde. Monatsschr Kinderheilkd 2013. [DOI: 10.1007/s00112-012-2846-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Schweiger B, Sirin S, Stein A, Hüning B, Köninger A, Wagner N, Metzelder ML. Intraabdominelle, extralobäre Lungensequestration mit kongenitaler zystisch-adenomatoider Malformation: Differenzialdiagnose einer suprarenalen Raumforderung beim Neugeborenen. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1326805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Fischer N, Wagner N, Biener R, Schwartz D. Friulimicin Production in Actinoplanes friuliensis. CHEM-ING-TECH 2012. [DOI: 10.1002/cite.201250563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Mikat B, Gellhaus A, Wagner N, Birdir C, Kimmig R, Köninger A. Early detection of maternal risk for preeclampsia. ISRN OBSTETRICS AND GYNECOLOGY 2012; 2012:172808. [PMID: 22852092 PMCID: PMC3407628 DOI: 10.5402/2012/172808] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/08/2012] [Accepted: 06/19/2012] [Indexed: 01/19/2023]
Abstract
Preeclampsia is one of the leading causes of maternal and fetal morbidity and mortality. New molecular insights offer new possibilities of early diagnosis of elevated maternal risk. Maternal risk factors, biophysical parameters like Doppler examination of the uterine arteries and biochemical parameters allow early risk calculation. Preventive and effective therapeutic agents like acetylsalicylacid can be started in the early second trimester. This article reviews the diagnostic possibilities of early risk calculation to detect women having high risk for preeclampsia and the potential benefits for them, the offspring and health care systems. We provide risk calculation for preeclampsia as an important and sensible part of first trimester screening.
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Barras G, Michel Y, Wagner N, Loutan L. [Pulmonary diseases among returning travelers]. REVUE MEDICALE SUISSE 2012; 8:1000-1005. [PMID: 22662629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Respiratory tract infections are a frequent cause of travelers' health problems. Tropical diseases are relatively rare compared to common respiratory infections. Nevertheless, due to their potential gravity, they must be systematically considered. The differential diagnosis of tropical pathogens is wide. A targeted travel history taking into account specific epidemiological, geographical and behavioral risk factors helps focusing biological exams to identify the causative diagnosis. The chest radiography remains very helpful in this context; however, more specific exams, such as serologies are often necessary to reach a final diagnosis.
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Wagner N, Posfay-Barbe KM, Chappuis F. [Management of childhood malaria in Switzerland]. REVUE MEDICALE SUISSE 2012; 8:1007-1012. [PMID: 22662630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Imported malaria is a rare condition in current paediatric practice in Switzerland but should be suspected in all febrile children returning from a malaria-endemic region. Immediate treatment is essential to decrease the risk of complications and mortality. Severity criteria must always be searched for. We suggest a diagnostic strategy based on the use of microscopy and rapid antigen-detection tests. Treatment depends on the Plasmodium species and the severity of illness. For uncomplicated malaria, a drug combination that includes an artemisinin derivative should be used in priority. Atovaquone/proguanil represents an alternative. Chloroquine can be used in most cases of malaria caused by another Plasmodium species. Severe malaria must be treated intravenously with quinine and soon with artesunate.
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Wöhrmann T, Wagner N, Krapp F, Huettel B, Weising K. Development of microsatellite markers in Fosterella rusbyi (Bromeliaceae) using 454 pyrosequencing. AMERICAN JOURNAL OF BOTANY 2012; 99:e160-e163. [PMID: 22447987 DOI: 10.3732/ajb.1100470] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
PREMISE OF THE STUDY Polymorphic microsatellite markers were developed for Fosterella rusbyi (Bromeliaceae) to evaluate the population genetic structure and genetic diversity of natural populations of F. rusbyi and other Fosterella species in Bolivia. METHODS AND RESULTS 454 pyrosequencing technology was used to generate 73027 sequence reads from F. rusbyi DNA, which together contained 2796 perfect simple sequence repeats (SSRs). Primer pairs were designed for 30 loci, of which 15 were used to genotype 30 F. rusbyi plants from two geographical areas in Bolivia. All markers were polymorphic, with two to nine alleles in the overall sample. Cross-species amplification was tested in 10 additional Fosterella species. Seven loci showed consistent amplification in six or more species. CONCLUSIONS The 15 SSR markers developed for F. rusbyi are promising candidates for population genetic analyses within F. rusbyi and other species of Fosterella.
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Wagner N, Podda M. Topische Therapieverfahren im Kindesalter. AKTUELLE DERMATOLOGIE 2012. [DOI: 10.1055/s-0031-1291457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Wagner N, Zepp F. Pädiatrische Rheumatologie. Monatsschr Kinderheilkd 2012. [DOI: 10.1007/s00112-011-2544-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Cvietusa P, Magid D, Goodrich G, Wagner N, Lowe R, Nuanes H, Shetterly S, Tacinas C, Wamboldt F, Xu S, Bender B. A Speech Recognition (SR) Reminder System Improves Adherence to ICS Among Pediatric Asthma Patients. J Allergy Clin Immunol 2012. [DOI: 10.1016/j.jaci.2011.12.476] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Penfold J, Wagner N, Schurtenberger P. Scattering techniques, 2012. Curr Opin Colloid Interface Sci 2012. [DOI: 10.1016/j.cocis.2012.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Wagner N. Pädiatrie – Aufgaben für die kommenden Jahre. Monatsschr Kinderheilkd 2012. [DOI: 10.1007/s00112-011-2589-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Wagner N, Köninger A. Fetale Anämie – Diagnostik, Therapie und Management. Geburtshilfe Frauenheilkd 2012. [DOI: 10.1055/s-0031-1280451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022] Open
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Dueckers G, Guellac N, Arbogast M, Dannecker G, Foeldvari I, Frosch M, Ganser G, Heiligenhaus A, Horneff G, Illhardt A, Kopp I, Krauspe R, Markus B, Michels H, Schneider M, Singendonk W, Sitter H, Spamer M, Wagner N, Niehues T. German evidence and consensus based guidelines 2010 for the treatment of juvenile idiopathic arthritis (JIA). Pediatr Rheumatol Online J 2011. [PMCID: PMC3194537 DOI: 10.1186/1546-0096-9-s1-p181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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