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Boulton AJM, Jensen TS, Luecke T, Petersen EA, Pop-Busui R, Taylor RS, Tesfaye S, Vileikyte L, Ziegler D. Where does spinal cord stimulation fit into the international guidelines for refractory painful diabetic neuropathy? a consensus statement. Diabetes Res Clin Pract 2023; 206 Suppl 1:110763. [PMID: 38245326 DOI: 10.1016/j.diabres.2023.110763] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 05/30/2023] [Indexed: 01/22/2024]
Abstract
BACKGROUND Although pharmacotherapy with anticonvulsants and/or antidepressants can be effective for many people with painful diabetic neuropathy (PDN), albeit with frequent side-effects, a critical juncture occurs when neuropathic pain no longer responds to standard first- and second-step mono- and dual therapy and becomes refractory. Subsequent to these pharmacotherapeutic approaches, third-line treatment options for PDN may include opioids (short-term), capsaicin 8% patches, and spinal cord stimulation (SCS). AIM This document summarizes consensus recommendations regarding appropriate treatment for refractory peripheral diabetic neuropathy (PDN), based on outcomes from an expert panel convened on December 10, 2022, as part of the Worldwide Initiative for Diabetes Education Virtual Global Summit, "Advances in the Management of Painful Diabetic Neuropathy." PARTICIPANTS Nine attendees, eminent physicians and academics, comprising six diabetes specialists, two pain specialists, and one health services expert. EVIDENCE For individuals with refractory PDN, opioids are a high-risk option that do not provide a long-term solution and should not be used. For appropriately selected individuals, SCS is an effective, safe, and durable treatment option. In particular, high-frequency (HF) SCS (10 kHz) shows strong efficacy and improves quality of life. To ensure treatment success, strict screening criteria should be used to prioritize candidates for SCS. CONSENSUS PROCESS Each participant voiced their opinion after reviewing available data, and a verbal consensus was reached during the meeting. CONCLUSION Globally, the use of opioids should rarely be recommended for refractory, severe PDN. Based on increasing clinical evidence, SCS, especially HF-SCS, should be considered as a treatment for PDN that is not responsive to first- or second-line monotherapy/dual therapy.
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Affiliation(s)
| | - T S Jensen
- International Diabetic Neuropathy Consortium, Aarhus University, Aarhus, Denmark
| | - T Luecke
- Pain Center, Franziskus Hospital Linz, Vice President, German Pain Society, Linz am Rhein, Germany
| | - E A Petersen
- University of Arkansas for Medical Sciences, AR, USA
| | - R Pop-Busui
- Metabolism, Endocrinology, and Diabetes, University of Michigan, MI, USA
| | | | - S Tesfaye
- Sheffield Teaching Hospitals and the University of Sheffield, Sheffield, UK
| | | | - D Ziegler
- Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University, Düsseldorf, Germany
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Andany SH, Nievergelt AP, Kangül M, Ziegler D, Fantner GE. A high-bandwidth voltage amplifier for driving piezoelectric actuators in high-speed atomic force microscopy. Rev Sci Instrum 2023; 94:093703. [PMID: 37695116 DOI: 10.1063/5.0159728] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 08/10/2023] [Indexed: 09/12/2023]
Abstract
High-speed atomic force microscopy (HS-AFM) is a technique capable of revealing the dynamics of biomolecules and living organisms at the nanoscale with a remarkable temporal resolution. The phase delay in the feedback loop dictates the achievable speed of HS-AFM instruments that rely on fast nanopositioners operated predominantly in conjunction with piezoelectric actuators (PEAs). The high capacitance and high operating voltage of PEAs make them difficult to drive. The limited bandwidth of associated high-voltage piezo-amplifiers is one of the bottlenecks to higher scan speeds. In this study, we report a high-voltage, wideband voltage amplifier comprised of a separate amplification and novel voltage-follower power stage, requiring no global feedback. The reported amplifier can deliver a current over ±2 amps, offers a small-signal bandwidth of 1 MHz, and exhibits an exceptionally low phase lag, making it particularly well suited for the needs of next-generation HS-AFMs. We demonstrate its capabilities by reporting its achievable bandwidth under various PEA loads and showcasing its merit for HS-AFM by imaging tubulin protofilament dynamics at sub-second frame rates.
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Affiliation(s)
- Santiago H Andany
- Laboratory for Bio- and Nano-Instrumentation, School of Engineering, Swiss Federal Institute of Technology Lausanne (EPFL), Lausanne 1015, Switzerland
| | - Adrian P Nievergelt
- Laboratory for Bio- and Nano-Instrumentation, School of Engineering, Swiss Federal Institute of Technology Lausanne (EPFL), Lausanne 1015, Switzerland
| | - Mustafa Kangül
- Laboratory for Bio- and Nano-Instrumentation, School of Engineering, Swiss Federal Institute of Technology Lausanne (EPFL), Lausanne 1015, Switzerland
| | - Dominik Ziegler
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Georg E Fantner
- Laboratory for Bio- and Nano-Instrumentation, School of Engineering, Swiss Federal Institute of Technology Lausanne (EPFL), Lausanne 1015, Switzerland
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Gunstheimer H, van Schendel P, Fläschner G, Frederix P, Ziegler D, Bippes C, Adams J. Photothermally driven AFM of biological samples. Biophys J 2023; 122:548a. [PMID: 36784838 DOI: 10.1016/j.bpj.2022.11.2901] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023] Open
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Cuénod A, Aerni M, Bagutti C, Bayraktar B, Boz ES, Carneiro CB, Casanova C, Coste AT, Damborg P, van Dam DW, Demirci M, Drevinek P, Dubuis O, Fernandez J, Greub G, Hrabak J, Hürkal Yiğitler G, Hurych J, Jensen TG, Jost G, Kampinga GA, Kittl S, Lammens C, Lang C, Lienhard R, Logan J, Maffioli C, Mareković I, Marschal M, Moran-Gilad J, Nolte O, Oberle M, Pedersen M, Pflüger V, Pranghofer S, Reichl J, Rentenaar RJ, Riat A, Rodríguez-Sánchez B, Schilt C, Schlotterbeck AK, Schrenzel J, Troib S, Willems E, Wootton M, Ziegler D, Egli A. Quality of MALDI-TOF mass spectra in routine diagnostics: results from an international external quality assessment including 36 laboratories from 12 countries using 47 challenging bacterial strains. Clin Microbiol Infect 2023; 29:190-199. [PMID: 35623578 DOI: 10.1016/j.cmi.2022.05.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [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: 02/03/2022] [Revised: 04/16/2022] [Accepted: 05/11/2022] [Indexed: 02/07/2023]
Abstract
OBJECTIVES Matrix assisted laser desorption ionization-time of flight (MALDI-TOF) mass spectrometry (MS) is a widely used method for bacterial species identification. Incomplete databases and mass spectral quality (MSQ) still represent major challenges. Important proxies for MSQ are the number of detected marker masses, reproducibility, and measurement precision. We aimed to assess MSQs across diagnostic laboratories and the potential of simple workflow adaptations to improve it. METHODS For baseline MSQ assessment, 47 diverse bacterial strains, which are challenging to identify by MALDI-TOF MS, were routinely measured in 36 laboratories from 12 countries, and well-defined MSQ features were used. After an intervention consisting of detailed reported feedback and instructions on how to acquire MALDI-TOF mass spectra, measurements were repeated and MSQs were compared. RESULTS At baseline, we observed heterogeneous MSQ between the devices, considering the median number of marker masses detected (range = [2-25]), reproducibility between technical replicates (range = [55%-86%]), and measurement error (range = [147 parts per million (ppm)-588 ppm]). As a general trend, the spectral quality was improved after the intervention for devices, which yielded low MSQs in the baseline assessment as follows: for four out of five devices with a high measurement error, the measurement precision was improved (p-values <0.001, paired Wilcoxon test); for six out of ten devices, which detected a low number of marker masses, the number of detected marker masses increased (p-values <0.001, paired Wilcoxon test). DISCUSSION We have identified simple workflow adaptations, which, to some extent, improve MSQ of poorly performing devices and should be considered by laboratories yielding a low MSQ. Improving MALDI-TOF MSQ in routine diagnostics is essential for increasing the resolution of bacterial identification by MALDI-TOF MS, which is dependent on the reproducible detection of marker masses. The heterogeneity identified in this external quality assessment (EQA) requires further study.
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Affiliation(s)
- Aline Cuénod
- Applied Microbiology Research, Department of Biomedicine, University of Basel, Basel, Switzerland; Division of Clinical Bacteriology and Mycology, University Hospital Basel, Basel, Switzerland.
| | | | | | - Banu Bayraktar
- University of Health Sciences, Sisli Hamidiye Etfal Teaching and Research Hospital, Istanbul, Turkey
| | - Efe Serkan Boz
- Department of Medical Microbiology, University of Health Sciences, Haydarpasa Numune Teaching and Research Hospital, Istanbul, Turkey
| | | | - Carlo Casanova
- Institute for Infectious Diseases, University of Bern, Bern, Switzerland
| | - Alix T Coste
- Institute of Microbiology, University Hospital Lausanne, Lausanne, Switzerland
| | - Peter Damborg
- Department of Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg, Denmark
| | | | - Mehmet Demirci
- Department of Medical Microbiology, Kirklareli University, Kirklareli, Turkey
| | - Pavel Drevinek
- Department of Medical Microbiology, 2nd Faculty of Medicine, Charles University and Motol University Hospital, Prague, Czech Republic
| | | | - José Fernandez
- Division of Laboratory Medicine, Laboratory of Bacteriology, University Hospital of Geneva, Geneva, Switzerland
| | - Gilbert Greub
- Institute of Microbiology, University Hospital Lausanne, Lausanne, Switzerland
| | - Jaroslav Hrabak
- Biomedical Center, Faculty of Medicine in Pilsen, Charles University, Plzen, Czech Republic
| | - Gülen Hürkal Yiğitler
- University of Health Sciences, Sisli Hamidiye Etfal Teaching and Research Hospital, Istanbul, Turkey
| | - Jakub Hurych
- Department of Medical Microbiology, 2nd Faculty of Medicine, Charles University and Motol University Hospital, Prague, Czech Republic
| | - Thøger Gorm Jensen
- Department of Clinical Microbiology, Odense University Hospital, Odense, Denmark
| | | | - Greetje A Kampinga
- Department of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Sonja Kittl
- Institute of Veterinary Bacteriology, University of Bern, Bern, Switzerland
| | | | | | | | - Julie Logan
- Reference Services Division, UK Health Security Agency, London, United Kingdom
| | | | - Ivana Mareković
- Department of Clinical and Molecular Microbiology, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Matthias Marschal
- Institute of Medical Microbiology and Hygiene, University of Tübingen, Tübingen, Germany
| | - Jacob Moran-Gilad
- School of Public Health, Ben Gurion University of the Negev and Soroka University Medical Center, Beer Sheva, Israel
| | - Oliver Nolte
- Center for Laboratory Medicine, St. Gallen, Switzerland
| | | | - Michael Pedersen
- Department of Clinical Microbiology, Hvidovre Hospital, Hvidovre, Denmark
| | | | | | - Julia Reichl
- Austrian Agency for Health and Food Safety, Vienna, Austria
| | | | - Arnaud Riat
- Division of Laboratory Medicine, Laboratory of Bacteriology, University Hospital of Geneva, Geneva, Switzerland
| | | | | | | | - Jacques Schrenzel
- Division of Laboratory Medicine, Laboratory of Bacteriology, University Hospital of Geneva, Geneva, Switzerland
| | - Shani Troib
- School of Public Health, Ben Gurion University of the Negev and Soroka University Medical Center, Beer Sheva, Israel
| | - Elise Willems
- Clinical Laboratory AZNikolaas, Sint-Niklaas, Belgium
| | - Mandy Wootton
- University Hospital of Wales, Cardiff, United Kingdom
| | | | - Adrian Egli
- Applied Microbiology Research, Department of Biomedicine, University of Basel, Basel, Switzerland; Division of Clinical Bacteriology and Mycology, University Hospital Basel, Basel, Switzerland
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Huber K, Dreos R, Geller S, Barquissau V, Ziegler D, Tavernari D, Giralt A, Gallart-Ayala H, Ciriello G, Ivanisevic J, Pichler M, Fajas L. 57P Deciphering the role of E2F transcription factor-1 in glutamine metabolism. ESMO Open 2023. [DOI: 10.1016/j.esmoop.2023.100915] [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: 03/11/2023] Open
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6
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Vaidya S, Ziegler D, Tanase AM, Malmqvist U, Kanniess F, Hederer B, Hosoe M. Pharmacokinetics of mometasone furoate delivered via two dry powder inhalers. Pulm Pharmacol Ther 2021; 70:102019. [PMID: 33771722 DOI: 10.1016/j.pupt.2021.102019] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 04/21/2020] [Accepted: 03/18/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND QMF149 is an inhaled fixed-dose combination of indacaterol acetate and mometasone furoate (MF) delivered via Breezhaler®, under development for once-daily treatment of asthma. MF delivered via Twisthaler® is approved as Asmanex® Twisthaler® for the treatment of asthma. Bridging of MF delivered via Twisthaler® to MF delivered via Breezhaler® was undertaken as part of QMF149 development to enable dose comparisons between the devices. Pharmacokinetics (PK) of MF were characterized in two studies; a single dose PK study in healthy volunteers and a pharmacokinetic/pharmacodynamic (PK/PD) study in asthma patients. OBJECTIVES The PK study in healthy volunteers evaluated the PK of single doses of MF via Breezhaler® (50-400 μg) and compared systemic exposure of MF following administration via Breezhaler® and Twisthaler® 400 μg (2 inhalations of 200 μg). The study in patients with asthma characterized the MF PK profile following once-daily inhalation of MF via Breezhaler® and Twisthaler® devices for 4 weeks. METHODS In the open-label, single-dose, crossover study, healthy subjects sequentially received MF via Twisthaler® (400 μg, medium-dose inhaled corticosteroid [ICS]) and escalating doses via Breezhaler® (50, 100, 200, 400 μg). PK data were obtained up to 72 hours post-dose. In the double-blind, double-dummy, parallel-group study, asthma patients were randomised to receive either MF 80 μg (low-dose ICS) or 320 μg (high-dose ICS) via Breezhaler®, or 200 μg (low-dose ICS) or 800 μg (2 inhalations of 400 μg; high-dose ICS) via Twisthaler® once daily for 4 weeks. PK sampling was performed on Days 1 and 28 at pre-dose and up to 24 hours post-dose. RESULTS In the healthy volunteer PK study, 20 healthy subjects completed all treatments. Dose-normalised AUClast of MF was 1.8-1.9-fold higher when delivered via Breezhaler® versus Twisthaler®. AUC and Cmax of MF increased in a dose-proportional manner over the range of 50-400 μg via Breezhaler®. Results from this study guided dose selection of MF via Breezhaler® for the asthma study. In the asthma study, in a subset of 96 patients, mean systemic exposure (AUClast and Cmax) for MF 80 and 320 μg via Breezhaler® was comparable with MF 200 and 800 μg via Twisthaler®, respectively, on Day 28. CONCLUSION PK characterization in a healthy volunteer PK study and subsequently an asthma study enabled selection of 80 μg (low), 160 μg (medium), and 320 μg (high) delivered via Breezhaler® as MF doses comparable to the 200 μg, 400 μg and 800 μg doses delivered by Twisthaler®, respectively, as part of QMF149 formulation development.
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Affiliation(s)
- Soniya Vaidya
- Novartis Institutes for BioMedical Research, Cambridge, MA, United States
| | | | | | - Ulf Malmqvist
- Clinical Research and Trial Centre, Skane University Hospital, Lund, Sweden
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Sedighi S, Soto MA, Jderu A, Dorobantu D, Enachescu M, Ziegler D. Swelling-Based Distributed Chemical Sensing with Standard Acrylate Coated Optical Fibers. Sensors (Basel) 2021; 21:s21030718. [PMID: 33494419 PMCID: PMC7865366 DOI: 10.3390/s21030718] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 01/16/2021] [Accepted: 01/18/2021] [Indexed: 01/08/2023]
Abstract
Distributed chemical sensing is demonstrated using standard acrylate coated optical fibers. Swelling of the polymer coating induces strain in the fiber’s silica core provoking a local refractive index change which is detectable all along an optical fiber by advanced distributed sensing techniques. Thermal effects can be discriminated from strain using uncoated fiber segments, leading to more accurate strain readings. The concept has been validated by measuring strain responses of various aqueous and organic solvents and different chain length alkanes and blends thereof. Although demonstrated on a short range of two meters using optical frequency-domain reflectometry, the technique can be applied to many kilometer-long fiber installations. Low-cost and insensitive to corrosion and electromagnetic radiation, along with the possibility to interrogate thousands of independent measurement points along a single optical fiber, this novel technique is likely to find applications in environmental monitoring, food analysis, agriculture, water quality monitoring, or medical diagnostics.
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Affiliation(s)
- Sina Sedighi
- NanoPRO START S.R.L., Oltenitei, No. 388, District 4, 041337 Bucharest, Romania; (S.S.); (A.J.); (D.D.)
| | - Marcelo A. Soto
- Department of Electronic Engineering, Universidad Técnica Federico Santa María, 2390123 Valparaíso, Chile;
| | - Alin Jderu
- NanoPRO START S.R.L., Oltenitei, No. 388, District 4, 041337 Bucharest, Romania; (S.S.); (A.J.); (D.D.)
- Center for Surface Science and Nanotechnology (CSSNT), University Politehnica Bucharest, 060042 Bucharest, Romania;
| | - Dorel Dorobantu
- NanoPRO START S.R.L., Oltenitei, No. 388, District 4, 041337 Bucharest, Romania; (S.S.); (A.J.); (D.D.)
- Center for Surface Science and Nanotechnology (CSSNT), University Politehnica Bucharest, 060042 Bucharest, Romania;
| | - Marius Enachescu
- Center for Surface Science and Nanotechnology (CSSNT), University Politehnica Bucharest, 060042 Bucharest, Romania;
- Academy of Romanian Scientists, 54 Splaiul Independentei, 050094 Bucharest, Romania
| | - Dominik Ziegler
- NanoPRO START S.R.L., Oltenitei, No. 388, District 4, 041337 Bucharest, Romania; (S.S.); (A.J.); (D.D.)
- Correspondence:
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Jderu A, Soto MA, Enachescu M, Ziegler D. Liquid Flow Meter by Fiber-Optic Sensing of Heat Propagation. Sensors (Basel) 2021; 21:s21020355. [PMID: 33430229 PMCID: PMC7825713 DOI: 10.3390/s21020355] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 12/31/2020] [Accepted: 01/05/2021] [Indexed: 01/06/2023]
Abstract
Monitoring fluid flow rates is imperative for a variety of industries including biomedical engineering, chemical engineering, the food industry, and the oil and gas industries. We propose a flow meter that, unlike turbine or pressure-based sensors, is not flow intrusive, requires zero maintenance, has low risk of clogging, and is compatible with harsh conditions. Using optical fiber sensing, we monitor the temperature distribution along a fluid conduit. Pulsed heat injection locally elevates the fluid’s temperature, and from the propagation velocity of the heat downstream, the fluid’s velocity is determined. The method is experimentally validated for water and ethanol using optical frequency-domain reflectometry (OFDR) with millimetric spatial resolution over a 1.2 m-long conduit. Results demonstrate that such sensing yields accurate data with a linear response. By changing the optical fiber interrogation to time-domain distributed sensing approaches, the proposed technique can be scaled to cover sensing ranges of several tens of kilometers. On the other extreme, miniaturization for instance by using integrated optical waveguides could potentially bring this flow monitoring technique to microfluidic systems or open future avenues for novel “lab-in-a-fiber” technologies with biomedical applications.
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Affiliation(s)
- Alin Jderu
- S.C. NanoPRO START MC S.R.L., Oltenitei, No. 388, District 4, 041337 Bucharest, Romania;
- Center for Surface Science and Nanotechnology (CSSNT), University Politehnica Bucharest, 060042 Bucharest, Romania;
| | - Marcelo A. Soto
- Department of Electronic Engineering, Universidad Técnica Federico Santa María, 2390123 Valparaíso, Chile;
| | - Marius Enachescu
- Center for Surface Science and Nanotechnology (CSSNT), University Politehnica Bucharest, 060042 Bucharest, Romania;
- Academy of Romanian Scientists, 54 Splaiul Independentei, 050094 Bucharest, Romania
| | - Dominik Ziegler
- S.C. NanoPRO START MC S.R.L., Oltenitei, No. 388, District 4, 041337 Bucharest, Romania;
- Correspondence:
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Buhl R, Tanase AM, Hosoe M, Cao W, Demin I, Bartels C, Jauernig J, Ziegler D, Patalano F, Hederer B, Kanniess F, Tillmann HC. A randomized, double-blind study to compare the efficacy and safety of two doses of mometasone furoate delivered via Breezhaler® or Twisthaler® in patients with asthma. Pulm Pharmacol Ther 2020; 62:101919. [PMID: 32387408 DOI: 10.1016/j.pupt.2020.101919] [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] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 03/18/2020] [Accepted: 04/23/2020] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Mometasone furoate (MF) is the inhaled corticosteroid (ICS) component in the long-acting β2-agonist (LABA)/ICS fixed-dose combination of indacaterol/MF, delivered via Breezhaler®, in development for asthma. MF at low (80 μg) and high (320 μg) doses delivered via Breezhaler® is expected to be comparable to MF at low (200 μg) and high (800 μg) doses respectively, delivered via Twisthaler®. METHODS This was a randomized, double-blind, double-dummy, four-week, parallel-group study of 739 adolescents and adults with persistent asthma. Eligible patients were receiving ICS treatment up to the maximum dose per day on a stable regimen for at least four weeks before screening. The study population was enriched for patients who were responsive to ICS therapy. The primary objective of the present study was to show non-inferiority of these doses, i.e. the low (80 μg) and high (320 μg) doses of MF delivered via Breezhaler® once daily, compared with the corresponding low (200 μg) and high (800 μg) doses of MF delivered via Twisthaler® once daily. The primary endpoint was 24 h post-dose trough forced expiratory volume in 1 s (FEV1), after four weeks of treatment in patients with asthma. A secondary objective was to evaluate the efficacy of MF 80 μg and 320 μg delivered via Breezhaler®, and MF 200 μg and 800 μg delivered via Twisthaler® in terms of Asthma Control Questionnaire-5 (ACQ-5) after one, two, three and four weeks of treatment. RESULTS The LS mean difference in trough FEV1 after four weeks of treatment between MF low dose 80 μg (Breezhaler®) and MF low dose 200 μg (Twisthaler®) was 27 mL (95% CI -34, 89); for MF high dose 320 μg (Breezhaler®) and MF high dose 800 μg (Twisthaler®) the difference was 0 mL (95% CI -60, 61). These differences were neither clinically nor statistically significant. All treatment arms provided similar clinically relevant improvements in ACQ-5 after four weeks of treatment compared with baseline. Both treatments showed a similar safety profile with a low incidence of adverse events. CONCLUSION The similarities in effects on lung function and ACQ after four weeks of treatment demonstrate the comparability of MF at low (80 μg) and high (320 μg) doses delivered with Breezhaler® with MF at low (200 μg) and high (800 μg) doses delivered with Twisthaler®, respectively. The study formally demonstrated that MF, delivered via Breezhaler®, is non-inferior to MF, delivered via Twisthaler® at corresponding ICS doses.
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Affiliation(s)
- Roland Buhl
- Pulmonary Department, Johannes Gutenberg University Hospital, Mainz, Germany
| | | | | | - Weihua Cao
- Novartis Pharmaceuticals Corporation, East Hanover, NJ, USA
| | | | | | | | | | | | - Bettina Hederer
- Novartis Institutes for Biomedical Research, Basel, Switzerland
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Abstract
Approximately one of three people with diabetes is affected by distal symmetric sensorimotor polyneuropathy (DSPN) which is associated with marked impairment in quality of life due to partly excruciating neuropathic pain on the one hand and painless foot ulcers on the other hand. The prevalence of painful DSPN may reach up to one quarter of patients with diabetes, while DSPN may be asymptomatic in up to half of the patients affected. Regrettably, DSPN still remains underdiagnosed. Typical neuropathic symptoms include pain, paresthesias and numbness particularly in the feet and calves. The management of DSPN includes three cornerstones: (1) lifestyle modification, causal treatment aimed at near-normoglycemia and multifactorial cardiovascular risk intervention, (2) pathogenesis-derived treatment and (3) symptomatic treatment of neuropathic pain. Multimodal pain treatment should not only aim at pain relief, but also allow for improvement in quality of sleep, mobility, and general quality of life.
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Affiliation(s)
- D Ziegler
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum, Leibniz-Zentrum für Diabetesforschung an der Heinrich Heine-Universität, Auf'm Hennekamp 65, 40225, Düsseldorf, Deutschland. .,Klinik für Endokrinologie und Diabetologie, Universitätsklinikum Düsseldorf, Düsseldorf, Deutschland.
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Jderu A, Enachescu M, Ziegler D. Mass Flow Monitoring by Distributed Fiber Optical Temperature Sensing. Sensors (Basel) 2019; 19:s19194151. [PMID: 31557845 PMCID: PMC6806273 DOI: 10.3390/s19194151] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 09/17/2019] [Accepted: 09/20/2019] [Indexed: 11/16/2022]
Abstract
We developed a novel method to monitor mass flow based on distributed fiber optical temperature sensing. Examination of the temporal and spatial temperature distribution along the entire length of a locally heated fluidic conduit reveals heat flow under forced convection. Our experimental results are in good agreement with two-dimensional finite element analysis that couples fluid dynamic and heat transfer equations. Through analysis of the temperature distribution bidirectional flow rates can be measured over three orders of magnitude. The technique is not flow intrusive, works in harsh conditions, including high-temperatures, high pressures, corrosive media, and strong electromagnetic environments. We demonstrate a first experimental implementation on a short fluidic system with a length of one meter. This range covers many applications such as low volume drug delivery, diagnostics, as well as process and automation technology. Yet, the technique can, without restrictions, be applied to long range installations. Existing fiber optics infrastructures, for instance on oil pipelines or down hole installations, would only require the addition of a heat source to enable reliable flow monitoring capability.
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Affiliation(s)
- Alin Jderu
- S.C. NanoPRO START MC S.R.L., Street Oltenitei, no. 388, District 4, 041337 Bucharest, Romania.
- Center for Surface Science and Nanotechnology (CSSNT), University POLITEHNICA Bucharest, Splaiul Independentei no. 313, 060042 Bucharest, Romania.
| | - Marius Enachescu
- Center for Surface Science and Nanotechnology (CSSNT), University POLITEHNICA Bucharest, Splaiul Independentei no. 313, 060042 Bucharest, Romania.
| | - Dominik Ziegler
- S.C. NanoPRO START MC S.R.L., Street Oltenitei, no. 388, District 4, 041337 Bucharest, Romania.
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Ducroux C, Fahed R, Khoury NN, Gevry G, Kalsoum E, Labeyrie MA, Ziegler D, Sauve C, Chagnon M, Darsaut TE, Raymond J. Intravenous thrombolysis and thrombectomy decisions in acute ischemic stroke: An interrater and intrarater agreement study. Rev Neurol (Paris) 2019; 175:380-389. [PMID: 31047687 DOI: 10.1016/j.neurol.2018.10.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 09/23/2018] [Accepted: 10/19/2018] [Indexed: 11/20/2022]
Abstract
PURPOSE We aimed to assess agreement on intravenous tissue-plasminogen activator (IV tPA) and mechanical thrombectomy (MT) management decisions in acute ischemic stroke (AIS) patients. Secondary objectives were to assess agreement on Diffusion-Weighted-Imaging-Alberta-Stroke-Program-EArly-CT-Score (DWI-ASPECTS), and clinicians' willingness to recruit patients in a randomized controlled trial (RCT) comparing medical management with or without MT. MATERIALS AND METHODS Studies assessing agreement of IV tPA and MT were systematically reviewed. An electronic portfolio of 41 AIS patients was sent to randomly selected providers at French stroke centers. Raters were asked 4 questions for each case: (1) What is the DWI-ASPECTS? (2) Would you perform IV tPA? (3) Would you perform MT? (4) Would you include the patient in a RCT comparing standard medical therapy with or without MT? Twenty responders were randomly selected to study intrarater agreement. Agreement was assessed using Fleiss' Kappa statistics. RESULTS The review yielded two single center studies involving 2-5 raters, with various results. The electronic survey was answered by 86 physicians (60 vascular neurologists and 26 interventional neuroradiologists). The interrater agreement was moderate for IV tPA treatment decisions (κ=0.565 [0.420-0.680]), but only fair for MT (κ=0.383 [0.289-0.491]) and for combined treatment decisions (κ=0.399 [0.320-0.486]). The intrarater agreement was at least substantial for the majority of raters. The interrater agreement for DWI-ASPECTS was fair (κ=0.325 [0.276-0.387]). Physicians were willing to include a mean of 14±9 patients (33.1%±21.7%) in a RCT. CONCLUSION Disagreements regarding the use of IVtPA or MT in the management of AIS patients remain frequent. Further trials are needed to resolve the numerous areas of uncertainty.
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Affiliation(s)
- C Ducroux
- Interventional Neuroradiology Department-Fondation Ophtalmologique Adolphe de Rothschild Hospital, 75019 Paris, France; Radiology Department-Centre Hospitalier de l'Université de Montréal (CHUM), Notre-Dame Hospital, H2X 3E4 Montreal, Canada
| | - R Fahed
- Interventional Neuroradiology Department-Fondation Ophtalmologique Adolphe de Rothschild Hospital, 75019 Paris, France; Radiology Department-Centre Hospitalier de l'Université de Montréal (CHUM), Notre-Dame Hospital, H2X 3E4 Montreal, Canada
| | - N N Khoury
- HSHS Neuroscience Center - HSHS St. John's Hospital, 62769 Springfield, IL, USA
| | - G Gevry
- Radiology Department-Centre Hospitalier de l'Université de Montréal (CHUM), Notre-Dame Hospital, H2X 3E4 Montreal, Canada
| | - E Kalsoum
- Neuroadiology Department-Henri Mondor Hospital, 94010 Créteil, France
| | - M-A Labeyrie
- Neuroadiology Department-Lariboisière Hospital, 75010 Paris, France
| | - D Ziegler
- CHUM Library - Centre Hospitalier de l'Université de Montréal (CHUM), Notre-Dame Hospital, H2X 3E4 Montreal-Québec, Canada
| | - C Sauve
- CHUM Library - Centre Hospitalier de l'Université de Montréal (CHUM), Notre-Dame Hospital, H2X 3E4 Montreal-Québec, Canada
| | - M Chagnon
- Department of Mathematics and Statistic-Université de Montréal, H2X 3E4 Montreal-Québec, Canada
| | - T E Darsaut
- Department of Surgery, Division of Neurosurgery - University of Alberta Hospital, Mackenzie Health Sciences Centre, T6G 2B7 Edmonton-Alberta, Canada
| | - J Raymond
- Radiology Department-Centre Hospitalier de l'Université de Montréal (CHUM), Notre-Dame Hospital, H2X 3E4 Montreal, Canada.
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Rauba J, Heins B, Chester-Jones H, Diaz H, Ziegler D, Linn J, Broadwater N. Relationships between protein and energy consumed from milk replacer and starter and calf growth and first-lactation production of Holstein dairy cows. J Dairy Sci 2019; 102:301-310. [DOI: 10.3168/jds.2018-15074] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 09/08/2018] [Indexed: 11/19/2022]
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Eichhorn J, Kastl C, Cooper JK, Ziegler D, Schwartzberg AM, Sharp ID, Toma FM. Nanoscale imaging of charge carrier transport in water splitting photoanodes. Nat Commun 2018; 9:2597. [PMID: 30013111 PMCID: PMC6048052 DOI: 10.1038/s41467-018-04856-8] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [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: 04/07/2018] [Accepted: 05/23/2018] [Indexed: 11/09/2022] Open
Abstract
The performance of energy materials hinges on the presence of structural defects and heterogeneity over different length scales. Here we map the correlation between morphological and functional heterogeneity in bismuth vanadate, a promising metal oxide photoanode for photoelectrochemical water splitting, by photoconductive atomic force microscopy. We demonstrate that contrast in mapping electrical conductance depends on charge transport limitations, and on the contact at the sample/probe interface. Using temperature and illumination intensity-dependent current–voltage spectroscopy, we find that the transport mechanism in bismuth vanadate can be attributed to space charge-limited current in the presence of trap states. We observe no additional recombination sites at grain boundaries, which indicates high defect tolerance in bismuth vanadate. These findings support the fabrication of highly efficient bismuth vanadate nanostructures and provide insights into how local functionality affects the macroscopic performance. The performance of energy materials is affected by structural defects, as well as physicochemical heterogeneity over different length scales. Here the authors map nanoscale correlations between morphological and functional heterogeneity, quantifying the trap states limiting electronic transport in bismuth vanadate thin films.
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Affiliation(s)
- Johanna Eichhorn
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA
| | - Christoph Kastl
- The Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA
| | - Jason K Cooper
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA
| | - Dominik Ziegler
- Scuba Probe Technologies LLC, 255 Lina Ave, Alameda, CA, 94501, USA
| | - Adam M Schwartzberg
- The Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA
| | - Ian D Sharp
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA.,Walter Schottky Institut and Physik Department, Technische Universität München, Am Coulombwall 4, 85748, Garching, Germany
| | - Francesca M Toma
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA.
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Ndungu SM, Messmer MM, Ziegler D, Gamper HA, Mészáros É, Thuita M, Vanlauwe B, Frossard E, Thonar C. Cowpea ( Vigna unguiculata L. Walp) hosts several widespread bradyrhizobial root nodule symbionts across contrasting agro-ecological production areas in Kenya. Agric Ecosyst Environ 2018; 261:161-171. [PMID: 29970945 PMCID: PMC5946706 DOI: 10.1016/j.agee.2017.12.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 09/18/2017] [Accepted: 12/15/2017] [Indexed: 06/08/2023]
Abstract
Cowpea (Vigna unguiculata L. Walp.) is an important African food legume suitable for dry regions. It is the main legume in two contrasting agro-ecological regions of Kenya as an important component of crop rotations because of its relative tolerance to unpredictable drought events. This study was carried out in an effort to establish a collection of bacterial root nodule symbionts and determine their relationship to physicochemical soil parameters as well as any geographical distributional patterns. Bradyrhizobium spp. were found to be widespread in this study and several different types could be identified at each site. Unique but rare symbionts were recovered from the nodules of plants sampled in a drier in-land region, where there were also overall more different bradyrhizobia found. Plants raised in soil from uncultivated sites with a natural vegetation cover tended to also associate with more different bradyrizobia. The occurrence and abundance of different bradyrhizobia correlated with differences in soil texture and pH, but did neither with the agro-ecological origin, nor the origin from cultivated (n = 15) or uncultivated (n = 5) sites. The analytical method, protein profiling of isolated strains by Matrix-Assisted Laser Desorption Ionization Time-of-Flight Mass Spectrometry (MALDI-TOF MS), provided higher resolution than 16S rRNA gene sequencing and was applied in this study for the first time to isolates recovered directly from field-collected cowpea root nodules. The method thus seems suitable for screening isolate collections on the presence of different groups, which, provided an appropriate reference database, can also be assigned to known species.
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Affiliation(s)
- Samuel Mathu Ndungu
- Institute of Agricultural Sciences, ETH Zurich Plant Nutrition group Eschikon 33, CH-8315 Lindau, Switzerland
- International Institute of Tropical Agriculture (IITA), c/o ICIPE Campus, P.O. Box 30772-00100 Nairobi, Kenya
- Research Institute of Organic Agriculture (FiBL), Ackerstrasse 113, CH-5070 Frick, Switzerland
| | - Monika M. Messmer
- Research Institute of Organic Agriculture (FiBL), Ackerstrasse 113, CH-5070 Frick, Switzerland
| | - Dominik Ziegler
- Mabritec AG, Lörracherstrasse 50, CH-4125 Riehen, Switzerland
| | - Hannes A. Gamper
- Institute of Agricultural Sciences, ETH Zurich Plant Nutrition group Eschikon 33, CH-8315 Lindau, Switzerland
| | - Éva Mészáros
- Institute of Agricultural Sciences, ETH Zurich Plant Nutrition group Eschikon 33, CH-8315 Lindau, Switzerland
| | - Moses Thuita
- International Institute of Tropical Agriculture (IITA), c/o ICIPE Campus, P.O. Box 30772-00100 Nairobi, Kenya
| | - Bernard Vanlauwe
- International Institute of Tropical Agriculture (IITA), c/o ICIPE Campus, P.O. Box 30772-00100 Nairobi, Kenya
| | - Emmanuel Frossard
- Institute of Agricultural Sciences, ETH Zurich Plant Nutrition group Eschikon 33, CH-8315 Lindau, Switzerland
| | - Cécile Thonar
- Research Institute of Organic Agriculture (FiBL), Ackerstrasse 113, CH-5070 Frick, Switzerland
- Current address: AgroBioChem Department, Gembloux Agro-Bio Tech, University of Liège, B-5030 Gembloux, Belgium
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Desbiolles BXE, Furlan G, Schwartzberg AM, Ashby PD, Ziegler D. Electrostatically actuated encased cantilevers. Beilstein J Nanotechnol 2018; 9:1381-1389. [PMID: 29977672 PMCID: PMC6009399 DOI: 10.3762/bjnano.9.130] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 04/09/2018] [Indexed: 06/08/2023]
Abstract
Background: Encased cantilevers are novel force sensors that overcome major limitations of liquid scanning probe microscopy. By trapping air inside an encasement around the cantilever, they provide low damping and maintain high resonance frequencies for exquisitely low tip-sample interaction forces even when immersed in a viscous fluid. Quantitative measurements of stiffness, energy dissipation and tip-sample interactions using dynamic force sensors remain challenging due to spurious resonances of the system. Results: We demonstrate for the first time electrostatic actuation with a built-in electrode. Solely actuating the cantilever results in a frequency response free of spurious peaks. We analyze static, harmonic, and sub-harmonic actuation modes. Sub-harmonic mode results in stable amplitudes unaffected by potential offsets or fluctuations of the electrical surface potential. We present a simple plate capacitor model to describe the electrostatic actuation. The predicted deflection and amplitudes match experimental results within a few percent. Consequently, target amplitudes can be set by the drive voltage without requiring calibration of optical lever sensitivity. Furthermore, the excitation bandwidth outperforms most other excitation methods. Conclusion: Compatible with any instrument using optical beam deflection detection electrostatic actuation in encased cantilevers combines ultra-low force noise with clean and stable excitation well-suited for quantitative measurements in liquid, compatible with air, or vacuum environments.
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Affiliation(s)
- Benoit X E Desbiolles
- Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd, Berkeley, California, USA
| | - Gabriela Furlan
- Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd, Berkeley, California, USA
| | - Adam M Schwartzberg
- Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd, Berkeley, California, USA
| | - Paul D Ashby
- Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd, Berkeley, California, USA
| | - Dominik Ziegler
- Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd, Berkeley, California, USA
- Scuba Probe Technologies LLC, 255 Lina Ave, Alameda, California, USA
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17
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Ndungu SM, Messmer MM, Ziegler D, Thuita M, Vanlauwe B, Frossard E, Thonar C. Evaluation of MALDI-TOF mass spectrometry for the competitiveness analysis of selected indigenous cowpea (Vigna unguiculata L. Walp.) Bradyrhizobium strains from Kenya. Appl Microbiol Biotechnol 2018; 102:5265-5278. [PMID: 29696334 DOI: 10.1007/s00253-018-9005-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [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: 02/01/2018] [Revised: 04/03/2018] [Accepted: 04/05/2018] [Indexed: 01/21/2023]
Abstract
Cowpea N2 fixation and yield can be enhanced by selecting competitive and efficient indigenous rhizobia. Strains from contrasting agro-ecologies of Kilifi and Mbeere (Kenya) were screened. Two pot experiments were established consisting of 13 Bradyrhizobium strains; experiment 1 (11 Mbeere + CBA + BK1 from Burkina Faso), experiment 2 (12 Kilifi + CBA). Symbiotic effectiveness was assessed (shoot biomass, SPAD index and N uptake). Nodule occupancy of 13 simultaneously co-inoculated strains in each experiment was analyzed by matrix-assisted laser desorption/ionization time of flight (MALDI-TOF) mass spectrometry (MS) to assess competitiveness. Strains varied in effectiveness and competitiveness. The four most efficient strains were further evaluated in a field trial in Mbeere during the 2014 short rains. Strains from bacteroids of cowpea nodules from pot and field experiments were accurately identified as Bradyrhizobium by MALDI-TOF based on the SARAMIS™ database. In the field, abundant indigenous populations 7.10 × 103 rhizobia g-1 soil, outcompeted introduced strains. As revealed by MALDI-TOF, indigenous strains clustered into six distinct groups (I, II, III, IV, V and VI), group III were most abundant occupying 80% of nodules analyzed. MALDI-TOF was rapid, affordable and reliable to identify Bradyrhizobium strains directly from nodule suspensions in competition pot assays and in the field with abundant indigenous strains thus, its suitability for future competition assays. Evaluating strain competitiveness and then symbiotic efficacy is proposed in bioprospecting for potential cowpea inoculant strains.
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Affiliation(s)
- Samuel Mathu Ndungu
- Institute of Agricultural Sciences, ETH Zurich, Plant Nutrition group, Eschikon 33, CH-8315, Lindau, Switzerland. .,Research Institute of Organic Agriculture (FiBL), Ackerstrasse 113, CH-5070, Frick, Switzerland. .,International Institute of Tropical Agriculture (IITA), c/o ICIPE Campus, P.O. Box 30772-00100, Nairobi, Kenya.
| | - Monika M Messmer
- Research Institute of Organic Agriculture (FiBL), Ackerstrasse 113, CH-5070, Frick, Switzerland
| | - Dominik Ziegler
- Mabritec AG, Lörracherstrasse 50, CH-4125, Riehen, Switzerland
| | - Moses Thuita
- International Institute of Tropical Agriculture (IITA), c/o ICIPE Campus, P.O. Box 30772-00100, Nairobi, Kenya
| | - Bernard Vanlauwe
- International Institute of Tropical Agriculture (IITA), c/o ICIPE Campus, P.O. Box 30772-00100, Nairobi, Kenya
| | - Emmanuel Frossard
- Institute of Agricultural Sciences, ETH Zurich, Plant Nutrition group, Eschikon 33, CH-8315, Lindau, Switzerland
| | - Cécile Thonar
- Research Institute of Organic Agriculture (FiBL), Ackerstrasse 113, CH-5070, Frick, Switzerland. .,AgroBioChem Department, Gembloux Agro-Bio Tech, University of Liège, B-5030, Gembloux, Belgium.
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18
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Heins BJ, Chester-Jones H, Ziegler D, Broadwater N. 75 Relationships between Early-Life Growth and Protein and Energy Intake with First-Lactation Performance of Holstein Dairy Cows. J Anim Sci 2018. [DOI: 10.1093/jas/sky073.073] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- B J Heins
- University of Minnesota West Central Research and Outreach Center, Morris, MN
| | - H Chester-Jones
- University of Minnesota Southern Research and Outreach Center, Waseca, MN
| | - D Ziegler
- University of Minnesota Southern Research and Outreach Center, Waseca, MN
| | - N Broadwater
- University of Minnesota Extension, Rochester, MN
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Bódis K, Lundbom J, Jelenik T, Markgraf D, Strom A, Zaharia OP, Karusheva Y, Burkart V, Müssig K, Kupriyanova Y, Ouni M, Hwang JH, Ziegler D, Schürmann A, Roden M, Szendroedi J. Reduzierte Stearoyl-CoA-Desaturase-1 und hormonsensitive Lipase-Genexpression im oberflächlichen subkutanen Fettgewebe bei männlichen, aber nicht weiblichen Patienten mit Typ-2-Diabetes. DIABETOL STOFFWECHS 2018. [DOI: 10.1055/s-0038-1641829] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- K Bódis
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetes-Forschung, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
| | - J Lundbom
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetes-Forschung, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
| | - T Jelenik
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetes-Forschung, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
| | - D Markgraf
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetes-Forschung, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
| | - A Strom
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetes-Forschung, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
| | - OP Zaharia
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetes-Forschung, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
| | - Y Karusheva
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetes-Forschung, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
| | - V Burkart
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetes-Forschung, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
| | - K Müssig
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetes-Forschung, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
- Klinik für Endokrinologie und Diabetologie, Medizinische Fakultät, Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Y Kupriyanova
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetes-Forschung, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
| | - M Ouni
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
- Deutsches Institut für Ernährungsforschung (DIfE), Potsdam-Rehbrücke, Germany
| | - JH Hwang
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetes-Forschung, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
| | - D Ziegler
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetes-Forschung, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
| | - A Schürmann
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
- Deutsches Institut für Ernährungsforschung (DIfE), Potsdam-Rehbrücke, Germany
| | - M Roden
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetes-Forschung, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
- Klinik für Endokrinologie und Diabetologie, Medizinische Fakultät, Heinrich-Heine-Universität, Düsseldorf, Germany
| | - J Szendroedi
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetes-Forschung, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
- Klinik für Endokrinologie und Diabetologie, Medizinische Fakultät, Heinrich-Heine-Universität, Düsseldorf, Germany
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Bönhof G, Strom A, Rathmann W, Heier M, Meisinger C, Peters A, Roden M, Thorand B, Herder C, Ziegler D. Unterschiedliche Assoziationen von inflammatorischen Markern und Wachstumsfaktoren bei Typ-2-Diabetes und Polyneuropathie. DIABETOL STOFFWECHS 2018. [DOI: 10.1055/s-0038-1641791] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- G Bönhof
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum, Leibniz-Zentrum für Diabetesforschung an der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - A Strom
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum, Leibniz-Zentrum für Diabetesforschung an der Heinrich-Heine-Universität, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München, Germany
| | - W Rathmann
- Deutsches Zentrum für Diabetesforschung (DZD), München, Germany
- Institut für Biometrie und Epidemiologie, Deutsches Diabetes-Zentrum, Leibniz-Zentrum für Diabetesforschung an der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - M Heier
- Deutsches Zentrum für Diabetesforschung (DZD), München, Germany
- Institut für Epidemiologie, Helmholtz Zentrum München, Neuherberg, Germany
| | - C Meisinger
- Deutsches Zentrum für Diabetesforschung (DZD), München, Germany
- Institut für Epidemiologie, Helmholtz Zentrum München, Neuherberg, Germany
| | - A Peters
- Deutsches Zentrum für Diabetesforschung (DZD), München, Germany
- Institut für Epidemiologie, Helmholtz Zentrum München, Neuherberg, Germany
| | - M Roden
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum, Leibniz-Zentrum für Diabetesforschung an der Heinrich-Heine-Universität, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München, Germany
- Klinik für Endokrinologie und Diabetologie, Medizinische Fakultät, Heinrich-Heine-Universität, Düsseldorf, Germany
| | - B Thorand
- Deutsches Zentrum für Diabetesforschung (DZD), München, Germany
- Institut für Epidemiologie, Helmholtz Zentrum München, Neuherberg, Germany
| | - C Herder
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum, Leibniz-Zentrum für Diabetesforschung an der Heinrich-Heine-Universität, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München, Germany
| | - D Ziegler
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum, Leibniz-Zentrum für Diabetesforschung an der Heinrich-Heine-Universität, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München, Germany
- Klinik für Endokrinologie und Diabetologie, Medizinische Fakultät, Heinrich-Heine-Universität, Düsseldorf, Germany
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Herder C, Kannenberg JM, Huth C, Carstensen-Kirberg M, Rathmann W, Koenig W, Strom A, Bönhof GJ, Heier M, Thorand B, Peters A, Roden M, Meisinger C, Ziegler D. Assoziationen von Myeloperoxidase und Superoxid-Dismutase-3 mit sensomotorischer distal-symmetrischer Polyneuropathie: KORA F4/FF4-Studie. DIABETOL STOFFWECHS 2018. [DOI: 10.1055/s-0038-1641868] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- C Herder
- Deutsches Diabetes-Zentrum, Institut für Klinische Diabetologie, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
| | - JM Kannenberg
- Deutsches Diabetes-Zentrum, Institut für Klinische Diabetologie, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
| | - C Huth
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
- Helmholtz Zentrum München, Institut für Epidemiologie, Neuherberg, Germany
| | - M Carstensen-Kirberg
- Deutsches Diabetes-Zentrum, Institut für Klinische Diabetologie, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
| | - W Rathmann
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
- Deutsches Diabetes-Zentrum, Institut für Biometrie und Epidemiologie, Düsseldorf, Germany
| | - W Koenig
- Technische Universität München, Deutsches Herzzentrum München, München, Germany
- Deutsches Zentrum für Herz-Kreislauf-Forschung (DZHK), Standort München, München, Germany
| | - A Strom
- Deutsches Diabetes-Zentrum, Institut für Klinische Diabetologie, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
| | - GJ Bönhof
- Deutsches Diabetes-Zentrum, Institut für Klinische Diabetologie, Düsseldorf, Germany
| | - M Heier
- Helmholtz Zentrum München, Institut für Epidemiologie, Neuherberg, Germany
| | - B Thorand
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
- Helmholtz Zentrum München, Institut für Epidemiologie, Neuherberg, Germany
| | - A Peters
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
- Helmholtz Zentrum München, Institut für Epidemiologie, Neuherberg, Germany
| | - M Roden
- Deutsches Diabetes-Zentrum, Institut für Klinische Diabetologie, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
- Heinrich-Heine-Universität Düsseldorf, Klinik für Endokrinologie und Diabetologie, Düsseldorf, Germany
| | - C Meisinger
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
- Helmholtz Zentrum München, Institut für Epidemiologie, Neuherberg, Germany
- Ludwig-Maximilians-Universität München am UNIKA-T Augsburg, Augsburg, Germany
| | - D Ziegler
- Deutsches Diabetes-Zentrum, Institut für Klinische Diabetologie, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
- Heinrich-Heine-Universität Düsseldorf, Klinik für Endokrinologie und Diabetologie, Düsseldorf, Germany
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22
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De Marchi R, Koss M, Ziegler D, De Respinis S, Petrini O. Fungi in water samples of a full-scale water work. Mycol Prog 2018. [DOI: 10.1007/s11557-017-1372-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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23
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Maynou G, Migura-Garcia L, Chester-Jones H, Ziegler D, Bach A, Terré M. Effects of feeding pasteurized waste milk to dairy calves on phenotypes and genotypes of antimicrobial resistance in fecal Escherichia coli isolates before and after weaning. J Dairy Sci 2017; 100:7967-7979. [PMID: 28755935 DOI: 10.3168/jds.2017-13040] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [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: 04/18/2017] [Accepted: 05/29/2017] [Indexed: 01/19/2023]
Abstract
The aim of this study was to evaluate the effects of feeding pasteurized waste milk (pWM) to calves on antimicrobial resistance of fecal Escherichia coli at both phenotypic and genotypic levels. Fifty-two Holstein female calves (3 ± 1.3 d of age) were fed 1 of the 2 different types of milk: milk replacer (MR) without antimicrobials or pWM with β-lactam residues until weaning at 49 d of age. Fecal swabs of all calves were obtained on d 0, 35, and 56 of the study and 3 E. coli isolates per sample were studied. Phenotypic resistance was tested by the disk diffusion method against a panel of 12 antimicrobials. A total of 13 resistance genes consisting of β-lactam, sulfonamide, tetracycline, and aminoglycoside families were examined by PCR. Feeding pWM to calves increased the presence of phenotypic resistance to ampicillin, cephalotin, ceftiofur, and florfenicol in fecal E. coli compared with MR-fed calves. However, the presence of resistance to sulfonamides, tetracyclines, and aminoglycosides was common in dairy calves independent of their milk-feeding source, suggesting other factors apart from the feeding source are involved in the emergence of antimicrobial resistance.
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Affiliation(s)
- G Maynou
- Department of Ruminant Production, Institute of Agrifood Research and Technology (IRTA), 08140 Caldes de Montbui, Spain
| | - L Migura-Garcia
- Department of Bacterial and Endoparasitic Infections, Centre de Recerca en Sanitat Animal (CReSA)-IRTA, 08193 Barcelona, Spain
| | - H Chester-Jones
- Department of Animal Science, Southern Research and Outreach Center, Waseca, MN 56093
| | - D Ziegler
- Department of Animal Science, Southern Research and Outreach Center, Waseca, MN 56093
| | - A Bach
- Department of Ruminant Production, Institute of Agrifood Research and Technology (IRTA), 08140 Caldes de Montbui, Spain; Institució Catalana de Recerca i Estudis Avançats (ICREA), 08010 Barcelona, Spain
| | - M Terré
- Department of Ruminant Production, Institute of Agrifood Research and Technology (IRTA), 08140 Caldes de Montbui, Spain.
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24
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Bönhof G, Strom A, Püttgen S, Bódis K, Herder C, Müssig K, Szendroedi J, Roden M, Ziegler D. Assoziation der kardiovagalen autonomen Funktion mit Insulinsensitivität und des Sympathikotonus mit Insulinsekretion bei neu diagnostiziertem Typ 1 und Typ 2 Diabetes. DIABETOL STOFFWECHS 2017. [DOI: 10.1055/s-0037-1601600] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- G Bönhof
- Institut für klinische Diabetologie, Deutsches Diabetes-Zentrum, Leibniz-Zentrum für Diabetes-Forschung an der Heinrich-Heine-Universität Düsseldorf, Neuropathie, Düsseldorf, Germany
| | - A Strom
- Institut für klinische Diabetologie, Deutsches Diabetes-Zentrum, Leibniz-Zentrum für Diabetes-Forschung an der Heinrich-Heine-Universität Düsseldorf, Neuropathie, Düsseldorf, Germany
| | - S Püttgen
- Institut für klinische Diabetologie, Deutsches Diabetes-Zentrum, Leibniz-Zentrum für Diabetes-Forschung an der Heinrich-Heine-Universität Düsseldorf, Neuropathie, Düsseldorf, Germany
| | - K Bódis
- Institut für klinische Diabetologie, Deutsches Diabetes-Zentrum, Leibniz-Zentrum für Diabetes-Forschung an der Heinrich-Heine-Universität Düsseldorf, Neuropathie, Düsseldorf, Germany
| | - C Herder
- Institut für klinische Diabetologie, Deutsches Diabetes-Zentrum, Leibniz-Zentrum für Diabetes-Forschung an der Heinrich-Heine-Universität Düsseldorf, Neuropathie, Düsseldorf, Germany
| | - K Müssig
- Institut für klinische Diabetologie, Deutsches Diabetes-Zentrum, Leibniz-Zentrum für Diabetes-Forschung an der Heinrich-Heine-Universität Düsseldorf, Neuropathie, Düsseldorf, Germany
| | - J Szendroedi
- Institut für klinische Diabetologie, Deutsches Diabetes-Zentrum, Leibniz-Zentrum für Diabetes-Forschung an der Heinrich-Heine-Universität Düsseldorf, Neuropathie, Düsseldorf, Germany
| | - M Roden
- Institut für klinische Diabetologie, Deutsches Diabetes-Zentrum, Leibniz-Zentrum für Diabetes-Forschung an der Heinrich-Heine-Universität Düsseldorf, Neuropathie, Düsseldorf, Germany
| | - D Ziegler
- Institut für klinische Diabetologie, Deutsches Diabetes-Zentrum, Leibniz-Zentrum für Diabetes-Forschung an der Heinrich-Heine-Universität Düsseldorf, Neuropathie, Düsseldorf, Germany
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25
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Püttgen S, Bönhof G, Strom A, Bódis K, Müssig K, Szendroedi J, Roden M, Ziegler D. Zunahme der Verzweigungen von Nervenfasern in der Kornea bei schmerzhafter gegenüber schmerzloser diabetischer Polyneuropathie. DIABETOL STOFFWECHS 2017. [DOI: 10.1055/s-0037-1601755] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- S Püttgen
- Institut für klinische Diabetologie, Deutsches Diabetes-Zentrum, Leibniz-Zentrum für Diabetes-Forschung an der Heinrich-Heine-Universität Düsseldorf, Neuropathie, Düsseldorf, Germany
| | - G Bönhof
- Institut für klinische Diabetologie, Deutsches Diabetes-Zentrum, Leibniz-Zentrum für Diabetes-Forschung an der Heinrich-Heine-Universität Düsseldorf, Neuropathie, Düsseldorf, Germany
| | - A Strom
- Institut für klinische Diabetologie, Deutsches Diabetes-Zentrum, Leibniz-Zentrum für Diabetes-Forschung an der Heinrich-Heine-Universität Düsseldorf, Neuropathie, Düsseldorf, Germany
| | - K Bódis
- Institut für klinische Diabetologie, Deutsches Diabetes-Zentrum, Leibniz-Zentrum für Diabetes-Forschung an der Heinrich-Heine-Universität Düsseldorf, Neuropathie, Düsseldorf, Germany
| | - K Müssig
- Institut für klinische Diabetologie, Deutsches Diabetes-Zentrum, Leibniz-Zentrum für Diabetes-Forschung an der Heinrich-Heine-Universität Düsseldorf, Neuropathie, Düsseldorf, Germany
| | - J Szendroedi
- Institut für klinische Diabetologie, Deutsches Diabetes-Zentrum, Leibniz-Zentrum für Diabetes-Forschung an der Heinrich-Heine-Universität Düsseldorf, Neuropathie, Düsseldorf, Germany
| | - M Roden
- Institut für klinische Diabetologie, Deutsches Diabetes-Zentrum, Leibniz-Zentrum für Diabetes-Forschung an der Heinrich-Heine-Universität Düsseldorf, Neuropathie, Düsseldorf, Germany
| | - D Ziegler
- Institut für klinische Diabetologie, Deutsches Diabetes-Zentrum, Leibniz-Zentrum für Diabetes-Forschung an der Heinrich-Heine-Universität Düsseldorf, Neuropathie, Düsseldorf, Germany
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26
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Chester-Jones H, Heins B, Ziegler D, Schimek D, Schuling S, Ziegler B, de Ondarza M, Sniffen C, Broadwater N. Relationships between early-life growth, intake, and birth season with first-lactation performance of Holstein dairy cows. J Dairy Sci 2017; 100:3697-3704. [DOI: 10.3168/jds.2016-12229] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2016] [Accepted: 01/22/2017] [Indexed: 11/19/2022]
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27
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Mosimann C, Oberhänsli T, Ziegler D, Nassal D, Kandeler E, Boller T, Mäder P, Thonar C. Tracing of Two Pseudomonas Strains in the Root and Rhizoplane of Maize, as Related to Their Plant Growth-Promoting Effect in Contrasting Soils. Front Microbiol 2017; 7:2150. [PMID: 28119675 PMCID: PMC5222796 DOI: 10.3389/fmicb.2016.02150] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Accepted: 12/20/2016] [Indexed: 11/18/2022] Open
Abstract
TaqMan-based quantitative PCR (qPCR) assays were developed to study the persistence of two well-characterized strains of plant growth-promoting rhizobacteria (PGPR), Pseudomonas fluorescens Pf153 and Pseudomonas sp. DSMZ 13134, in the root and rhizoplane of inoculated maize plants. This was performed in pot experiments with three contrasting field soils (Buus, Le Caron and DOK-M). Potential cross-reactivity of the qPCR assays was assessed with indigenous Pseudomonas and related bacterial species, which had been isolated from the rhizoplane of maize roots grown in the three soils and then characterized by Matrix-Assisted Laser Desorption Ionization (MALDI) Time-of-Flight (TOF) mass spectrometry (MS). Sensitivity of the qPCR expressed as detection limit of bacterial cells spiked into a rhizoplane matrix was 1.4 × 102 CFU and 1.3 × 104 CFU per gram root fresh weight for strain Pf153 and DSMZ 13134, respectively. Four weeks after planting and inoculation, both strains could readily be detected in root and rhizoplane, whereas only Pf153 could be detected after 8 weeks. The colonization rate of maize roots by strain Pf153 was significantly influenced by the soil type, with a higher colonization rate in the well fertile and organic soil of Buus. Inoculation with strain DSMZ 13134, which colonized roots and rhizoplane to the same degree, independently of the soil type, increased yield of maize, in terms of biomass accumulation, only in the acidic soil of Le Caron, whereas inoculation with strain Pf153 reduced yield in the soil Buus, despite of its high colonization rate and persistence. These results indicate that the colonization rate and persistence of inoculated Pseudomonas strains can be quantitatively assessed by the TaqMan-based qPCR technique, but that it cannot be taken for granted that inoculation with a well-colonizing and persistent Pseudomonas strain has a positive effect on yield of maize.
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Affiliation(s)
- Carla Mosimann
- Department of Environmental Sciences, Botany, Zürich-Basel Plant Science Center, University of BaselBasel, Switzerland; Research Institute of Organic Agriculture (FIBL)Frick, Switzerland
| | | | | | - Dinah Nassal
- Institute of Soil Science and Land Evaluation, University of Hohenheim Stuttgart, Germany
| | - Ellen Kandeler
- Institute of Soil Science and Land Evaluation, University of Hohenheim Stuttgart, Germany
| | - Thomas Boller
- Department of Environmental Sciences, Botany, Zürich-Basel Plant Science Center, University of Basel Basel, Switzerland
| | - Paul Mäder
- Research Institute of Organic Agriculture (FIBL) Frick, Switzerland
| | - Cécile Thonar
- Research Institute of Organic Agriculture (FIBL) Frick, Switzerland
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Chapman CE, Chester-Jones H, Ziegler D, Clapper JA, Erickson PS. Effects of cinnamaldehyde or monensin on performance of weaned Holstein dairy heifers. J Dairy Sci 2016; 100:1712-1719. [PMID: 28041730 DOI: 10.3168/jds.2016-11893] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Accepted: 11/10/2016] [Indexed: 12/25/2022]
Abstract
The objective of this 70-d study was to determine the effects of the essential oil cinnamaldehyde compared with the ionophore monensin on performance of weaned Holstein dairy heifers. Eighty-four Holstein dairy heifers (91 ± 3.33 d of age; 109 ± 7.55 kg) were housed in a naturally ventilated curtain sidewall, straw-bedded barn in 12 pens with 7 heifers/pen (3.98 m2/head). Heifers were randomly assigned to 1 of 4 treatments in a completely randomized design: (1) control (CON; carrier, 908 g of ground corn), (2) monensin sodium [MON; 1 mg/kg of body weight (BW) + carrier], (3) cinnamaldehyde (CIN1; 1 mg/kg of BW + carrier), or (4) cinnamaldehyde (CIN2; 2 mg/kg of BW + carrier). The treatments were hand-mixed into a 20% crude protein (CP) whole shelled corn and protein pellet mix fed at 2.21 kg/heifer daily. Heifers had access to free-choice hay and water daily. Initial BW and hip heights were taken at the start of the study and every other week thereafter until calves reached 23 wk of age. Blood samples were also taken on each weigh day to determine plasma urea nitrogen, glucose, and insulin-like growth factor-1 concentrations. Fecal samples were taken from the same 3 heifers/pen initially and then at d 28, 56, and 70 of the study for coccidia counts. Cinnamaldehyde had no performance effects on growth, hay intake, hip height, or blood metabolites compared with MON or CON. Average daily gains were 0.98, 0.99, 1.01, and 1.03 kg/d, and average hay intakes per pen were 17.08, 16.34, 18.11, and 17.60 kg/d for CON, MON, CIN1, and CIN2, respectively. Fecal samples by pens indicated the presence of viable coccidia, but the counts were low and not consistent across heifers within each pen. No benefits were associated with supplementing cinnamaldehyde or monensin into grain mixes for weaned heifers.
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Affiliation(s)
- C E Chapman
- Department of Biological Sciences, University of New Hampshire, Durham 03824
| | - H Chester-Jones
- University of Minnesota Southern Research and Outreach Center, Waseca 56093
| | - D Ziegler
- University of Minnesota Southern Research and Outreach Center, Waseca 56093
| | - J A Clapper
- South Dakota State University, Brookings 57007
| | - P S Erickson
- Department of Biological Sciences, University of New Hampshire, Durham 03824.
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Fossou RK, Ziegler D, Zézé A, Barja F, Perret X. Two Major Clades of Bradyrhizobia Dominate Symbiotic Interactions with Pigeonpea in Fields of Côte d'Ivoire. Front Microbiol 2016; 7:1793. [PMID: 27891120 PMCID: PMC5104742 DOI: 10.3389/fmicb.2016.01793] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 10/25/2016] [Indexed: 12/03/2022] Open
Abstract
In smallholder farms of Côte d'Ivoire, particularly in the northeast of the country, Cajanus cajan (pigeonpea) has become an important crop because of its multiple beneficial facets. Pigeonpea seeds provide food to make ends meet, are sold on local markets, and aerial parts serve as forage for animals. Since it fixes atmospheric nitrogen in symbiosis with soil bacteria collectively known as rhizobia, C. cajan also improves soil fertility and reduces fallow time. Yet, seed yields remain low mostly because farmers cannot afford chemical fertilizers. To identify local rhizobial strains susceptible to be used as bio-inoculants to foster pigeonpea growth, root nodules were collected in six fields of three geographically distant regions of Côte d'Ivoire. Nodule bacteria were isolated and characterized using various molecular techniques including matrix-assisted laser desorption/ionization time of flight (MALDI-TOF) mass spectrometry (MS) and DNA sequencing. These molecular analyses showed that 63 out of 85 nodule isolates belonged to two major clades of bradyrhizobia, one of which is known as the Bradyrhizobium elkanii super clade. Phylogenies of housekeeping (16S-ITS-23S, rpoB) and symbiotic (nifH) genes were not always congruent suggesting that lateral transfer of nitrogen fixation genes also contributed to define the genome of these bradyrhizobial isolates. Interestingly, no field-, plant-, or cultivar-specific effect was found to shape the profiles of symbiotic strains. In addition, nodule isolates CI-1B, CI-36E, and CI-41A that belong to distinct species, showed similar symbiotic efficiencies suggesting that any of these strains might serve as a proficient inoculant for C. cajan.
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Affiliation(s)
- Romain K Fossou
- Microbiology Unit, Department of Botany and Plant Biology, University of Geneva Geneva, Switzerland
| | - Dominik Ziegler
- Microbiology Unit, Department of Botany and Plant Biology, University of GenevaGeneva, Switzerland; Mabritec AGRiehen, Switzerland
| | - Adolphe Zézé
- Laboratoire de Biotechnologies Végétale et Microbienne, Unité Mixte de Recherche et d'Innovation en Sciences Agronomiques et Génie Rural, Institut National Polytechnique Félix Houphouët-Boigny (INPHB) Yamoussoukro, Côte d'Ivoire
| | - François Barja
- Microbiology Unit, Department of Botany and Plant Biology, University of Geneva Geneva, Switzerland
| | - Xavier Perret
- Microbiology Unit, Department of Botany and Plant Biology, University of Geneva Geneva, Switzerland
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30
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Ziegler D, Keller J, Maier C, Pannek J. Diabetische Neuropathie. DIABETOL STOFFWECHS 2016. [DOI: 10.1055/s-0042-113785] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- D. Ziegler
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetesforschung; Klinik für Endokrinologie und Diabetologie, Universitätsklinikum Düsseldorf
| | - J. Keller
- Medizinische Klinik, Israelitisches Krankenhaus, Hamburg
| | - C. Maier
- Abteilung für Schmerzmedizin, Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil, Ruhr-Universität, Bochum
| | - J. Pannek
- Neuro-Urologie, Schweizer Paraplegiker-Zentrum Nottwil, Schweiz
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31
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Chapman CE, Ziegler D, Chester-Jones H, Clapper JA, Erickson PS. 1560 Effects of cinnamaldehyde on performance of postweaned Holstein dairy heifers. J Anim Sci 2016. [DOI: 10.2527/jam2016-1560] [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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32
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Chester-Jones H, Heins BJ, Ziegler D, Schimek D, Schuling SE, Ziegler B, De Ondarza MB, Sniffen CJ, Broadwater N. 1235 Relationships between early life milk replacer and starter intake and first lactation performance of Holstein dairy cows. J Anim Sci 2016. [DOI: 10.2527/jam2016-1235] [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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33
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Chester-Jones H, Ziegler D, Blome R, Wood D. 1214 Performance and health of calves pre- and post-weaning when fed milk replacers formulated with alternative protein sources. J Anim Sci 2016. [DOI: 10.2527/jam2016-1214] [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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34
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Heins BJ, Ziegler D, Schimek D, Schuling SE, Ziegler B, Chester-Jones H, De Ondarza MB, Sniffen CJ, Broadwater N. 1244 Relationships between birth season versus early life starter intake and growth and first lactation performance of Holstein dairy cows. J Anim Sci 2016. [DOI: 10.2527/jam2016-1244] [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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35
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Heins BJ, Chester-Jones H, Ziegler D, De Ondarza MB, Schuling SE, Ziegler B, Schimek D, Broadwater N, Sniffen CJ. 1243 Relationships between early life growth and first lactation performance of Holstein dairy cows. J Anim Sci 2016. [DOI: 10.2527/jam2016-1243] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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36
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Schimek D, Ziegler B, Ziegler D, Chester-Jones H. 1215 Performance and health of calves pre- and post-weaning when fed milk replacer supplemented with algae. J Anim Sci 2016. [DOI: 10.2527/jam2016-1215] [Citation(s) in RCA: 2] [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: 11/13/2022] Open
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37
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Maynou G, Migura-Garcia L, Subirats J, Chester-Jones H, Ziegler D, Bach A, Terré M. 1232 Impact of milk-feeding programs on fecal bacteria population and antimicrobial resistance genes in Escherichia coli isolated from feces in preweaned calves. J Anim Sci 2016. [DOI: 10.2527/jam2016-1232] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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38
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Ziegler D, Chester-Jones H, Cook DL, Olson JL, McCusker SM. 1213 Performance and health of calves pre- and post-weaning when fed pasteurized whole milk and whole milk supplemented with differing milk replacer protein sources. J Anim Sci 2016. [DOI: 10.2527/jam2016-1213] [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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Bönhof G, Strom A, Püttgen S, Ringel B, Brüggemann J, Bódis K, Müssig K, Szendrödi J, Roden M, Ziegler D, PROPANE DDS. Nachweis dermaler Nervenregeneration trotz vermehrtem Faserverlust bei schmerzhafter und schmerzloser diabetischer Polyneuropathie. DIABETOL STOFFWECHS 2016. [DOI: 10.1055/s-0036-1580934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Ziegler D, Keller J, Maier C, Pannek J. Diabetische Neuropathie. DIABETOL STOFFWECHS 2015. [DOI: 10.1055/s-0035-1553876] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- D. Ziegler
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetesforschung; Klinik für Endokrinologie und Diabetologie, Universitätsklinikum Düsseldorf
| | - J. Keller
- Medizinische Klinik, Israelitisches Krankenhaus, Hamburg
| | - C. Maier
- Abteilung für Schmerzmedizin, Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil, Ruhr-Universität, Bochum
| | - J. Pannek
- Neuro-Urologie, Schweizer Paraplegiker-Zentrum Nottwil, Schweiz
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Herder C, Bongaerts BWC, Ouwens DM, Rathmann W, Heier M, Carstensen-Kirberg M, Koenig W, Thorand B, Roden M, Meisinger C, Ziegler D. Low serum omentin levels in the elderly population with Type 2 diabetes and polyneuropathy. Diabet Med 2015; 32:1479-83. [PMID: 26094489 DOI: 10.1111/dme.12761] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/24/2015] [Indexed: 12/21/2022]
Abstract
AIMS To investigate the hypothesis that high serum levels of omentin, an adipokine with anti-inflammatory, insulin-sensitizing and cardioprotective properties, may be related to a lower risk of diabetic sensorimotor polyneuropathy. METHODS The association between serum omentin level and polyneuropathy was estimated in people aged 61-82 years with Type 2 diabetes (47 with and 168 without polyneuropathy) from the population-based KORA F4 study. The presence of clinical diabetic sensorimotor polyneuropathy was defined as bilateral impairment of foot vibration perception and/or foot pressure sensation. Omentin levels were determined by enzyme-linked immunosorbent assay. RESULTS Serum omentin level was inversely associated with polyneuropathy after adjustment for age, sex, height, waist circumference, hypertension, total cholesterol, smoking, alcohol intake and physical activity [odds ratio 0.45 (95% CI 0.21-0.98); P = 0.043]. Although omentin was positively correlated with adiponectin (r = 0.55, P < 0.0001) and inversely with tumour necrosis factor-α (r = -0.30, P = 0.019), additional adjustment for adiponectin and tumour necrosis factor-α had little impact on the association. CONCLUSIONS Serum levels of omentin are reduced in people with Type 2 diabetes and diabetic sensorimotor polyneuropathy, independently of established risk factors of polyneuropathy. This association is only partially explained by biomarkers of subclinical inflammation.
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Affiliation(s)
- C Herder
- Institute for Clinical Diabetology, German Diabetes Centre, Leibniz Centre for Diabetes Research at Heinrich Heine University Düsseldorf, Düsseldorf, Germany
- German Centre for Diabetes Research (DZD e.V.), Partner Düsseldorf, Germany
| | - B W C Bongaerts
- Institute for Biometrics and Epidemiology, German Diabetes Centre, Leibniz Centre for Diabetes Research at Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - D M Ouwens
- German Centre for Diabetes Research (DZD e.V.), Partner Düsseldorf, Germany
- Institute of Clinical Biochemistry and Pathobiochemistry, German Diabetes Centre, Leibniz Centre for Diabetes Research at Heinrich Heine University Düsseldorf, Düsseldorf, Germany
- Department of Endocrinology, Ghent University Hospital, Ghent, Belgium, Germany
| | - W Rathmann
- Institute for Biometrics and Epidemiology, German Diabetes Centre, Leibniz Centre for Diabetes Research at Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - M Heier
- Institute of Epidemiology II, Helmholtz Zentrum München, German Research Centre for Environmental Health, Neuherberg, Germany
| | - M Carstensen-Kirberg
- Institute for Clinical Diabetology, German Diabetes Centre, Leibniz Centre for Diabetes Research at Heinrich Heine University Düsseldorf, Düsseldorf, Germany
- German Centre for Diabetes Research (DZD e.V.), Partner Düsseldorf, Germany
| | - W Koenig
- Department of Internal Medicine II - Cardiology, University of Ulm Medical Center, Ulm, Germany
| | - B Thorand
- Institute of Epidemiology II, Helmholtz Zentrum München, German Research Centre for Environmental Health, Neuherberg, Germany
- German Centre for Diabetes Research (DZD e.V.), Partner Neuherberg, Neuherberg, Germany
| | - M Roden
- Institute for Clinical Diabetology, German Diabetes Centre, Leibniz Centre for Diabetes Research at Heinrich Heine University Düsseldorf, Düsseldorf, Germany
- German Centre for Diabetes Research (DZD e.V.), Partner Düsseldorf, Germany
- Department of Endocrinology and Diabetology, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - C Meisinger
- Institute of Epidemiology II, Helmholtz Zentrum München, German Research Centre for Environmental Health, Neuherberg, Germany
| | - D Ziegler
- Institute for Clinical Diabetology, German Diabetes Centre, Leibniz Centre for Diabetes Research at Heinrich Heine University Düsseldorf, Düsseldorf, Germany
- German Centre for Diabetes Research (DZD e.V.), Partner Düsseldorf, Germany
- Department of Endocrinology and Diabetology, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
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Kankean A, Tsoli M, Tsang J, Chitranjan A, Maleki S, McDonald K, Ziegler D. HG-16 * THE ANTI-APOPTOTIC PROTEIN ARC IS OVER-EXPRESSED IN MALIGNANT GLIOMA AND CORRELATES WITH PATIENT OUTCOME. Neuro Oncol 2015. [DOI: 10.1093/neuonc/nov061.53] [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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Biessels GJ, Bril V, Calcutt NA, Cameron NE, Cotter MA, Dobrowsky R, Feldman EL, Fernyhough P, Jakobsen J, Malik RA, Mizisin AP, Oates PJ, Obrosova IG, Pop-Busui R, Russell JW, Sima AA, Stevens MJ, Schmidt RE, Tesfaye S, Veves A, Vinik AI, Wright DE, Yagihashi S, Yorek MA, Ziegler D, Zochodne DW. Phenotyping animal models of diabetic neuropathy: a consensus statement of the diabetic neuropathy study group of the EASD (Neurodiab). J Peripher Nerv Syst 2015; 19:77-87. [PMID: 24934510 DOI: 10.1111/jns5.12072] [Citation(s) in RCA: 117] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Revised: 03/27/2014] [Accepted: 04/07/2014] [Indexed: 11/28/2022]
Abstract
NIDDK, JDRF, and the Diabetic Neuropathy Study Group of EASD sponsored a meeting to explore the current status of animal models of diabetic peripheral neuropathy. The goal of the workshop was to develop a set of consensus criteria for the phenotyping of rodent models of diabetic neuropathy. The discussion was divided into five areas: (1) status of commonly used rodent models of diabetes, (2) nerve structure, (3) electrophysiological assessments of nerve function, (4) behavioral assessments of nerve function, and (5) the role of biomarkers in disease phenotyping. Participants discussed the current understanding of each area, gold standards (if applicable) for assessments of function, improvements of existing techniques, and utility of known and exploratory biomarkers. The research opportunities in each area were outlined, providing a possible roadmap for future studies. The meeting concluded with a discussion on the merits and limitations of a unified approach to phenotyping rodent models of diabetic neuropathy and a consensus formed on the definition of the minimum criteria required for establishing the presence of the disease. A neuropathy phenotype in rodents was defined as the presence of statistically different values between diabetic and control animals in 2 of 3 assessments (nocifensive behavior, nerve conduction velocities, or nerve structure). The participants propose that this framework would allow different research groups to compare and share data, with an emphasis on data targeted toward the therapeutic efficacy of drug interventions.
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Schamarek I, Herder C, Nowotny B, Straßburger K, Carstensen-Kirberg M, Nowotny P, Strom A, Püttgen S, Müssig K, Szendroedi J, Ziegler D, Roden M. Association between interleukin-6 and motor nerve conduction in individuals with newly diagnosed diabetes: results from the German Diabetes Study. DIABETOL STOFFWECHS 2015. [DOI: 10.1055/s-0035-1549771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Kankean A, Ehteda A, Chitranjan A, Tsoli M, Ager E, Ziegler D. BT-09 * TRILEXIUM INHIBITS THE EXPRESSION OF t-NOX AND IS A NOVEL, POTENTIALLY POTENT THERAPY FOR DIFFUSE INTRINSIC PONTINE GLIOMAS. Neuro Oncol 2015. [DOI: 10.1093/neuonc/nov061.19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ziegler D, Pothier JF, Ardley J, Fossou RK, Pflüger V, de Meyer S, Vogel G, Tonolla M, Howieson J, Reeve W, Perret X. Ribosomal protein biomarkers provide root nodule bacterial identification by MALDI-TOF MS. Appl Microbiol Biotechnol 2015; 99:5547-62. [PMID: 25776061 DOI: 10.1007/s00253-015-6515-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Revised: 02/19/2015] [Accepted: 02/28/2015] [Indexed: 01/25/2023]
Abstract
Accurate identification of soil bacteria that form nitrogen-fixing associations with legume crops is challenging given the phylogenetic diversity of root nodule bacteria (RNB). The labor-intensive and time-consuming 16S ribosomal RNA (rRNA) sequencing and/or multilocus sequence analysis (MLSA) of conserved genes so far remain the favored molecular tools to characterize symbiotic bacteria. With the development of mass spectrometry (MS) as an alternative method to rapidly identify bacterial isolates, we recently showed that matrix-assisted laser desorption ionization (MALDI) time-of-flight (TOF) can accurately characterize RNB found inside plant nodules or grown in cultures. Here, we report on the development of a MALDI-TOF RNB-specific spectral database built on whole cell MS fingerprints of 116 strains representing the major rhizobial genera. In addition to this RNB-specific module, which was successfully tested on unknown field isolates, a subset of 13 ribosomal proteins extracted from genome data was found to be sufficient for the reliable identification of nodule isolates to rhizobial species as shown in the putatively ascribed ribosomal protein masses (PARPM) database. These results reveal that data gathered from genome sequences can be used to expand spectral libraries to aid the accurate identification of bacterial species by MALDI-TOF MS.
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Affiliation(s)
- Dominik Ziegler
- Department of Botany and Plant Biology, Microbiology Unit, Sciences III, University of Geneva, 30 quai Ernest-Ansermet, CH-1211, Geneva 4, Switzerland
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Ziegler D, Keller J, Maier C, Pannek J. Diabetische Neuropathie. DIABETOL STOFFWECHS 2015. [DOI: 10.1055/s-0034-1385399] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- D. Ziegler
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetesforschung; Klinik für Endokrinologie und Diabetologie, Universitätsklinikum Düsseldorf
| | - J. Keller
- Medizinische Klinik, Israelitisches Krankenhaus, Hamburg
| | - C. Maier
- Abteilung für Schmerzmedizin, Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil, Ruhr-Universität, Bochum
| | - J. Pannek
- Neuro-Urologie, Schweizer Paraplegiker-Zentrum Nottwil, Schweiz
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Bongaerts BWC, Ziegler D, Shaw JE, Heier M, Kowall B, Herder C, Roden M, Peters A, Meisinger C, Rathmann W. A clinical screening score for diabetic polyneuropathy: KORA F4 and AusDiab studies. J Diabetes Complications 2015; 29:44-9. [PMID: 25457462 DOI: 10.1016/j.jdiacomp.2014.09.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Revised: 09/29/2014] [Accepted: 09/30/2014] [Indexed: 11/21/2022]
Abstract
AIMS Since screening for distal sensorimotor polyneuropathy (DSPN) in individuals with diabetes is being underused, our aim was to develop a clinical screening score for identifying individuals with DSPN. METHODS All participants with type 2 diabetes and aged 61-82 years from the German population-based KORA F4 Study (n=177) and the Australian population-based AusDiab Study (n=244) were combined into one study sample. Risk indicators of DSPN were identified and entered into a stepwise model-selection procedure, constructing two consecutive scores with increasing complexity (a base and clinical model). RESULTS The prevalence of DSPN was 18.2% (95% confidence interval (CI): 14.7-22.3). The base model comprised age (years), height (cm), weight (kg), pain or discomfort in the feet and/or legs (yes/no), and duration of diabetes (years), yielding an area under the receiver operating characteristics curve (AUC) of 0.80 (95% CI: 0.76-0.85). The clinical model additionally included diastolic blood pressure (mmHg) and serum creatinine levels (mmol/l). The AUC increased only marginally to 0.82 (0.77-0.87) (p for AUC comparison=0.188). The internal validation of the scores produced similar AUCs. CONCLUSIONS The screening scores developed in this study are a simple tool to differentiate between a high and low likelihood of having DSPN among individuals with type 2 diabetes.
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Affiliation(s)
- B W C Bongaerts
- Institute of Biometrics and Epidemiology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Auf´m Hennekamp 65, 40225 Düsseldorf, Germany.
| | - D Ziegler
- Department of Endocrinology and Diabetology, University Hospital Düsseldorf, Moorenstrasse 5, 40225 Düsseldorf, Germany; Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Auf´m Hennekamp 65, 40225 Düsseldorf, Germany; German Center for Diabetes Research (DZD e.V.), partner Düsseldorf, Auf´m Hennekamp 65, 40225 Germany
| | - J E Shaw
- Baker IDI Heart and Diabetes Institute, 75 Commercial Road, Melbourne, Victoria 3004, Australia
| | - M Heier
- Helmholtz Zentrum München, German Research Center for Environmental Health, Institute of Epidemiology II, Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany
| | - B Kowall
- Institute of Biometrics and Epidemiology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Auf´m Hennekamp 65, 40225 Düsseldorf, Germany
| | - C Herder
- Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Auf´m Hennekamp 65, 40225 Düsseldorf, Germany; German Center for Diabetes Research (DZD e.V.), partner Düsseldorf, Auf´m Hennekamp 65, 40225 Germany
| | - M Roden
- Department of Endocrinology and Diabetology, University Hospital Düsseldorf, Moorenstrasse 5, 40225 Düsseldorf, Germany; Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Auf´m Hennekamp 65, 40225 Düsseldorf, Germany; German Center for Diabetes Research (DZD e.V.), partner Düsseldorf, Auf´m Hennekamp 65, 40225 Germany
| | - A Peters
- Helmholtz Zentrum München, German Research Center for Environmental Health, Institute of Epidemiology II, Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany
| | - C Meisinger
- Helmholtz Zentrum München, German Research Center for Environmental Health, Institute of Epidemiology II, Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany
| | - W Rathmann
- Institute of Biometrics and Epidemiology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Auf´m Hennekamp 65, 40225 Düsseldorf, Germany
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Haber M, Murray J, Gamble L, Carnegie-Clark A, Webber H, Ruhle M, Carter D, Oberthur A, Fischer M, Ziegler D, Marshall G, Gurova K, Burkhart C, Purmal A, Gudkov A, Norris M. 422 CBL0137, a novel NFkB suppressor and p53 activator, is highly effective in pre-clinical models of neuroblastoma. Eur J Cancer 2014. [DOI: 10.1016/s0959-8049(14)70548-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Saletta F, Wadham C, Byrne J, Ziegler D, McCowage G, Haber M, Marshall G, Norris M. 421 Molecular profiling for factors predicting sensitivity or resistance to therapy in relapsed child cancer. Eur J Cancer 2014. [DOI: 10.1016/s0959-8049(14)70547-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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