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Ebert CL, Söder L, Kubinski M, Glanz J, Gregersen E, Dümmer K, Grund D, Wöhler AS, Könenkamp L, Liebig K, Knoll S, Hellhammer F, Topp AK, Becher P, Springer A, Strube C, Nagel-Kohl U, Nordhoff M, Steffen I, Bauer BU, Ganter M, Feige K, Becker SC, Boelke M. Detection and Characterization of Alongshan Virus in Ticks and Tick Saliva from Lower Saxony, Germany with Serological Evidence for Viral Transmission to Game and Domestic Animals. Microorganisms 2023; 11:microorganisms11030543. [PMID: 36985117 PMCID: PMC10055853 DOI: 10.3390/microorganisms11030543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 02/15/2023] [Accepted: 02/17/2023] [Indexed: 02/25/2023] Open
Abstract
The newly discovered group of Jingmenviruses has been shown to infect a wide range of hosts and has been associated with febrile illness in humans. During a survey for Jingmenviruses in ticks from Lower Saxony, Germany, Alongshan virus (ALSV) was identified in Ixodes spp. ticks. Additional virus screenings revealed the presence of ALSV in the bodies and saliva of ticks collected at several locations in Lower Saxony. Vector competence studies that included Ixodes ricinus and Dermacentor reticulatus validated the replication of ALSV within those tick species. In vitro feeding experiments with ALSV-injected Ixodes ricinus demonstrated effective viral transmission during blood feeding. To evaluate the potential viral transmission during a natural blood meal, sera from wild game and domestic animals were investigated. One serum sample from a red deer was found to be positive for ALSV RNA, while serological screenings in game and domestic animals revealed the presence of ALSV-specific antibodies at different locations in Lower Saxony. Overall, those results demonstrate the broad distribution of ALSV in ticks in Lower Saxony and hypothesize frequent exposure to animals based on serological investigations. Hence, its potential risk to human and animal health requires further investigation.
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Affiliation(s)
- Cara Leonie Ebert
- Institute for Parasitology, Centre for Infection Medicine, University of Veterinary Medicine Hannover, Buenteweg 17, 30559 Hanover, Germany
- Research Center for Emerging Infections and Zoonoses, Buenteweg 17, 30559 Hanover, Germany
| | - Lars Söder
- Institute of Virology, Department of Infectious Diseases, University of Veterinary Medicine Hannover, Buenteweg 17, 30559 Hanover, Germany
| | - Mareike Kubinski
- Research Center for Emerging Infections and Zoonoses, Buenteweg 17, 30559 Hanover, Germany
| | - Julien Glanz
- Institute for Parasitology, Centre for Infection Medicine, University of Veterinary Medicine Hannover, Buenteweg 17, 30559 Hanover, Germany
- Research Center for Emerging Infections and Zoonoses, Buenteweg 17, 30559 Hanover, Germany
| | - Eva Gregersen
- Institute of Virology, Department of Infectious Diseases, University of Veterinary Medicine Hannover, Buenteweg 17, 30559 Hanover, Germany
| | - Katrin Dümmer
- Research Center for Emerging Infections and Zoonoses, Buenteweg 17, 30559 Hanover, Germany
| | - Domenic Grund
- Institute for Parasitology, Centre for Infection Medicine, University of Veterinary Medicine Hannover, Buenteweg 17, 30559 Hanover, Germany
- Research Center for Emerging Infections and Zoonoses, Buenteweg 17, 30559 Hanover, Germany
| | - Ann-Sophie Wöhler
- Institute for Parasitology, Centre for Infection Medicine, University of Veterinary Medicine Hannover, Buenteweg 17, 30559 Hanover, Germany
- Research Center for Emerging Infections and Zoonoses, Buenteweg 17, 30559 Hanover, Germany
| | - Laura Könenkamp
- Research Center for Emerging Infections and Zoonoses, Buenteweg 17, 30559 Hanover, Germany
- Institute for Biochemistry, University of Veterinary Medicine Hannover, Buenteweg 17, 30559 Hanover, Germany
| | - Katrin Liebig
- Institute for Parasitology, Centre for Infection Medicine, University of Veterinary Medicine Hannover, Buenteweg 17, 30559 Hanover, Germany
- Research Center for Emerging Infections and Zoonoses, Buenteweg 17, 30559 Hanover, Germany
| | - Steffen Knoll
- Institute for Parasitology, Centre for Infection Medicine, University of Veterinary Medicine Hannover, Buenteweg 17, 30559 Hanover, Germany
| | - Fanny Hellhammer
- Institute for Parasitology, Centre for Infection Medicine, University of Veterinary Medicine Hannover, Buenteweg 17, 30559 Hanover, Germany
- Research Center for Emerging Infections and Zoonoses, Buenteweg 17, 30559 Hanover, Germany
| | - Anna-Katharina Topp
- Institute for Parasitology, Centre for Infection Medicine, University of Veterinary Medicine Hannover, Buenteweg 17, 30559 Hanover, Germany
| | - Paul Becher
- Institute of Virology, Department of Infectious Diseases, University of Veterinary Medicine Hannover, Buenteweg 17, 30559 Hanover, Germany
| | - Andrea Springer
- Institute for Parasitology, Centre for Infection Medicine, University of Veterinary Medicine Hannover, Buenteweg 17, 30559 Hanover, Germany
| | - Christina Strube
- Institute for Parasitology, Centre for Infection Medicine, University of Veterinary Medicine Hannover, Buenteweg 17, 30559 Hanover, Germany
| | - Uschi Nagel-Kohl
- Lower Saxony State Office for Consumer Protection and Food Safety (LAVES), Food and Veterinary Institute Braunschweig/Hannover, Eintrachtweg 17, 30173 Hanover, Germany
| | - Marcel Nordhoff
- Lower Saxony State Office for Consumer Protection and Food Safety (LAVES), Food and Veterinary Institute Oldenburg, Philosophenweg 38, 26121 Oldenburg, Germany
| | - Imke Steffen
- Institute for Biochemistry, University of Veterinary Medicine Hannover, Buenteweg 17, 30559 Hanover, Germany
| | - Benjamin Ulrich Bauer
- Clinic for Swine and Small Ruminants, University of Veterinary Medicine Hannover, Bischofsholer Damm 15, 30173 Hanover, Germany
| | - Martin Ganter
- Clinic for Swine and Small Ruminants, University of Veterinary Medicine Hannover, Bischofsholer Damm 15, 30173 Hanover, Germany
| | - Karsten Feige
- Clinic for Horses, University of Veterinary Medicine Hannover, Buenteweg 9, 30559 Hanover, Germany
| | - Stefanie C. Becker
- Institute for Parasitology, Centre for Infection Medicine, University of Veterinary Medicine Hannover, Buenteweg 17, 30559 Hanover, Germany
- Research Center for Emerging Infections and Zoonoses, Buenteweg 17, 30559 Hanover, Germany
- Correspondence: (S.C.B.); (M.B.); Tel.: +49-511-953-8717 (S.C.B.)
| | - Mathias Boelke
- Institute for Parasitology, Centre for Infection Medicine, University of Veterinary Medicine Hannover, Buenteweg 17, 30559 Hanover, Germany
- Research Center for Emerging Infections and Zoonoses, Buenteweg 17, 30559 Hanover, Germany
- Correspondence: (S.C.B.); (M.B.); Tel.: +49-511-953-8717 (S.C.B.)
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Knoll S, Springer A, Hauck D, Schunack B, Pachnicke S, Fingerle V, Strube C. Distribution of Borrelia burgdorferi s.l. and Borrelia miyamotoi in Ixodes tick populations in Northern Germany, co-infections with Rickettsiales and assessment of potential influencing factors. Med Vet Entomol 2021; 35:595-606. [PMID: 34180074 DOI: 10.1111/mve.12537] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 04/30/2021] [Accepted: 06/03/2021] [Indexed: 06/13/2023]
Abstract
To determine Borrelia spp. (Spirochaetales: Spirochaetaceae) prevalence and species distribution in Northern Germany, Ixodes ticks were sampled from April to October in 2018 and 2019 by the flagging method at three locations each in five regions. Analysis by quantitative real-time PCR of 3150 individual ticks revealed an overall prevalence of 30.6%, without significant differences between tick stages (31.7% positive adults, 28.6% positive nymphs). Significant differences were observed in seasonal infection rates, but not between regions, landscape types or sampling years. Analysis of co-infections with Rickettsiales indicated a negative association between Borrelia and Anaplasma phagocytophilum infection. The most frequent Borrelia species differentiated by Reverse Line Blot were B. afzelii and B. garinii/B. bavariensis, followed by B. valaisiana, B. burgdorferi sensu stricto, B. spielmanii and B. lusitaniae. Furthermore, B. miyamotoi was identified in 12.9% of differentiable samples. No effect of region nor landscape type on species composition was found, but significant variations in the distribution at the different sampling sites within a region were observed. The detected monthly fluctuations in prevalence and the differences in intra-regional Borrelia species distribution underline the importance of long-term and multi-location monitoring of Borrelia spp. in ticks as an essential part of public health assessment.
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Affiliation(s)
- S Knoll
- Institute for Parasitology, Centre for Infection Medicine, University of Veterinary Medicine Hannover, Hanover, Germany
| | - A Springer
- Institute for Parasitology, Centre for Infection Medicine, University of Veterinary Medicine Hannover, Hanover, Germany
| | - D Hauck
- Institute for Parasitology, Centre for Infection Medicine, University of Veterinary Medicine Hannover, Hanover, Germany
| | - B Schunack
- Bayer Animal Health GmbH (part of Elanco Animal Health), Leverkusen, Germany
| | - S Pachnicke
- Bayer Vital GmbH, Leverkusen, Germany
- Elanco Deutschland GmbH, Monheim, Germany
| | - V Fingerle
- National Reference Centre for Borrelia, Oberschleißheim, Germany
| | - C Strube
- Institute for Parasitology, Centre for Infection Medicine, University of Veterinary Medicine Hannover, Hanover, Germany
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Smith T, Knoll S, Martinalbo J, Ye F, Kolaei F. P10.07 Real-World US Treatment Patterns and Clinical Outcomes in Advanced NSCLC After Prior Platinum Chemotherapy and Immunotherapy. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.312] [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: 11/30/2022]
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Knoll S, Springer A, Hauck D, Schunack B, Pachnicke S, Strube C. Regional, seasonal, biennial and landscape-associated distribution of Anaplasma phagocytophilum and Rickettsia spp. infections in Ixodes ticks in northern Germany and implications for risk assessment at larger spatial scales. Ticks Tick Borne Dis 2021; 12:101657. [PMID: 33524939 DOI: 10.1016/j.ttbdis.2021.101657] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 01/07/2021] [Accepted: 01/11/2021] [Indexed: 01/03/2023]
Abstract
Tick-associated Rickettsiales are important pathogens with relevance for public and animal health; therefore, knowledge regarding their distribution is essential for risk assessment and disease prevention. To investigate the prevalence of Anaplasma phagocytophilum and Rickettsia spp. in northern Germany, Ixodes ticks were flagged monthly from April to October in 2018 and 2019 at three collection sites each in the regions of Bremen, Emsland, Hanover, Kassel and Uelzen. A total of 3150 ticks (1052 females, 1048 males and 1050 nymphs) were individually examined for rickettsial infections using probe-based quantitative real-time PCR. Overall prevalence of A. phagocytophilum was 6.4 % (202/3150; 6.7 % [71/1052] in females, 7.5 % [79/1048] in males and 5.0 % [52/1050] in nymphs). For Rickettsia spp., the overall prevalence was 29.6 % (931/3150; 33.4 % [351/1052] in females, 28.3 % [297/1048] in males and 27.0 % [283/1050] in nymphs). Rickettsia species identification by real-time pyrosequencing on a subset of 409 positive samples was successful in 407 cases (99.5 %). Rickettsia helvetica was the predominant species with a detection rate of 99.8 % (406/407). Additionally, Rickettsia monacensis was detected in one tick (0.2 %). Generalized linear mixed models showed significant regional as well as monthly differences regarding the prevalence of both pathogens. In addition, the prevalence of both pathogens was significantly higher in 2018 (A. phagocytophilum: 8.0 % [126/1575], Rickettsia spp.: 35.4 % [558/1575]) than in 2019 (A. phagocytophilum: 4.8 % [76/1575], Rickettsia spp.: 23.9 % [373/1575]). In contrast, no effect of landscape type on pathogen prevalence was found. As Rickettsia spp.-detection was based on the single-copy gene gltA, it was possible to calculate the individual pathogen load per tick, which was significantly higher in female ticks than in nymphs (mean values: 8.19 × 104 vs. 9.58 × 103). Regional, seasonal and biennial prevalence differences of tick-transmitted Rickettsiales show the necessity to investigate ticks from multiple locations, over several months and in more than one year to reliably assess the infection risk on a larger geographical scale.
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Affiliation(s)
- Steffen Knoll
- Institute for Parasitology, Centre for Infection Medicine, University of Veterinary Medicine Hannover, Buenteweg 17, 30559, Hanover, Germany
| | - Andrea Springer
- Institute for Parasitology, Centre for Infection Medicine, University of Veterinary Medicine Hannover, Buenteweg 17, 30559, Hanover, Germany
| | - Daniela Hauck
- Institute for Parasitology, Centre for Infection Medicine, University of Veterinary Medicine Hannover, Buenteweg 17, 30559, Hanover, Germany
| | - Bettina Schunack
- Bayer Animal Health GmbH (Part of Elanco Animal Health), 51373, Leverkusen, Germany
| | | | - Christina Strube
- Institute for Parasitology, Centre for Infection Medicine, University of Veterinary Medicine Hannover, Buenteweg 17, 30559, Hanover, Germany.
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Mazieres J, Ahn M, Chouaid C, Kron A, Wolf J, Goyal R, Davis K, Perrinjaquet M, Pham T, Knoll S. P1.16-46 Genetic Testing Patterns, Treatment Characteristics, and Overall Survival in ALK-Positive Metastatic NSCLC Patients Treated with Ceritinib. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1272] [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: 10/25/2022]
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Drehmann M, Chitimia-Dobler L, Lindau A, Frank A, Mai S, Fachet K, Hauck D, Knoll S, Strube C, Lühken R, Fischer D, Ziegler L, Mackenstedt U. Ixodes frontalis: a neglected but ubiquitous tick species in Germany. Exp Appl Acarol 2019; 78:79-91. [PMID: 31093856 DOI: 10.1007/s10493-019-00375-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 05/07/2019] [Indexed: 05/10/2023]
Abstract
The ornithophilic tick species Ixodes frontalis (Panzer) is spatially distributed in Europe, Asia and northern Africa. It can serve as a carrier of different bacteria and viruses, but little is known of its actual vector competence. In addition, adult females of this species are associated with the avian "tick-related syndrome" (TRS). Like most ornithophilic tick species, I. frontalis is usually collected from bird nests or directly from their hosts. Reports of I. frontalis being collected with the flagging method are scarce. In Germany, the species is considered as very rare. In the few reports that are available, the majority of ticks has been discovered on migrating birds. Therefore, knowledge of the actual distribution of this species in Germany was strictly limited. In this study, we report the finding of 1084 individuals of I. frontalis collected with the flagging method in urban areas and gardens in several regions of Germany. Furthermore, the species was discovered on 35 dead Eurasian blackbirds (Turdus merula) from all over Germany. Finally, we report of five new possible cases of TRS, three in free-ranging birds and two in captive birds, including a Harris's hawk (Parabuteo unicinctus) kept for falconry.
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Affiliation(s)
- Marco Drehmann
- Parasitology Unit, Institute of Zoology, University of Hohenheim, Stuttgart, Germany.
| | - Lidia Chitimia-Dobler
- Parasitology Unit, Institute of Zoology, University of Hohenheim, Stuttgart, Germany
- Bundeswehr Institute of Microbiology, Munich, Germany
| | - Alexander Lindau
- Parasitology Unit, Institute of Zoology, University of Hohenheim, Stuttgart, Germany
| | - Alisa Frank
- Parasitology Unit, Institute of Zoology, University of Hohenheim, Stuttgart, Germany
| | - Sabrina Mai
- Parasitology Unit, Institute of Zoology, University of Hohenheim, Stuttgart, Germany
| | - Katrin Fachet
- Parasitology Unit, Institute of Zoology, University of Hohenheim, Stuttgart, Germany
| | - Daniela Hauck
- Institute for Parasitology, Centre for Infection Medicine, University of Veterinary Medicine Hannover, Hanover, Germany
| | - Steffen Knoll
- Institute for Parasitology, Centre for Infection Medicine, University of Veterinary Medicine Hannover, Hanover, Germany
| | - Christina Strube
- Institute for Parasitology, Centre for Infection Medicine, University of Veterinary Medicine Hannover, Hanover, Germany
| | - Renke Lühken
- Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
| | - Dominik Fischer
- Clinic for Birds, Reptiles, Amphibians and Fish, Justus Liebig University Giessen, Giessen, Germany
| | - Luisa Ziegler
- Clinic for Birds, Reptiles, Amphibians and Fish, Justus Liebig University Giessen, Giessen, Germany
| | - Ute Mackenstedt
- Parasitology Unit, Institute of Zoology, University of Hohenheim, Stuttgart, Germany
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Chan C, Li J, Knoll S, Tang W, Bocharova I, Signorovitch J. Comparative efficacy of first-line ceritinib and alectinib in advanced ALK+ NSCLC: A cross-study indirect comparison. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy425.040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Stubert J, Szewczyk M, Spitschak A, Knoll S, Richter DU, Pützer B. Endotheliale ICAM-Expression in Abhängigkeit der plazentaren Progranulinsynthese. Geburtshilfe Frauenheilkd 2018. [DOI: 10.1055/s-0038-1671462] [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] Open
Affiliation(s)
- J Stubert
- Universitätsfrauenklinik Rostock, Rostock, Deutschland
| | - M Szewczyk
- Universitätsfrauenklinik Rostock, Rostock, Deutschland
| | - A Spitschak
- Institut für Experimentelle Gentherapie und Tumorforschung (IEGT), Rostock, Deutschland
| | - S Knoll
- Institut für Experimentelle Gentherapie und Tumorforschung (IEGT), Rostock, Deutschland
| | - DU Richter
- Universitätsfrauenklinik Rostock, Rostock, Deutschland
| | - B Pützer
- Institut für Experimentelle Gentherapie und Tumorforschung (IEGT), Rostock, Deutschland
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Goyal R, Kron A, Wolf J, Mazieres J, Chouaid C, Davis K, Perrinjaquet M, Knoll S. Treatment patterns and overall survival in patients with BRAF-mutated metastatic non-small cell lung cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy292.110] [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: 11/12/2022] Open
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Knoll S, Decostere A, Declercq AM. Microplastics: minuscule partikels met grote gevolgen? VLAAMS DIERGEN TIJDS 2017. [DOI: 10.21825/vdt.v86i4.16181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Sinds het begin van de massaproductie van plastics vormt de contaminatie van het mariene milieu met deze persisterende synthetische stoffen een alsmaar groter probleem. De laatste decennia wordt aangenomen dat microplastics hierbij een grote rol spelen. Deze kleine plastic partikels (< 5mm) komen voor in het mariene milieu en kennen diverse bronnen, waaronder fragmentatie van macroplastics en de afvoer van primaire microplasticscrubs via afvalwater. Recent onderzoek heeft uitgewezen dat microplastics door talrijke mariene organismen opgenomen worden. Dit zou kunnen leiden tot gezondheidsproblemen, onder meer door mechanische schade en door cellulaire toxiciteit. Hiernaast wordt de microplasticproblematiek gecompliceerd door de contaminatie van deze partikels met toxische chemicaliën. Bovendien zouden microplastics en microplastic-gebonden contaminanten kunnen accumuleren in de voedselketen en uiteindelijk bij de mens terechtkomen. Ondanks het toenemend aantal publicaties omtrent microplastics zijn er nog veel onbeantwoorde vragen. In dit artikel wordt de actuele kennis besproken aangaande microplastics in het mariene milieu.
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Szewczyk M, Spitschak A, Knoll S, Richter DU, Reimer T, Pützer BM, Stubert J. Parakrine Effekte der trophoblastären Progranulinexpression auf humane umbilikale Endothelzellen in-vitro. Geburtshilfe Frauenheilkd 2017. [DOI: 10.1055/s-0037-1600075] [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] Open
Affiliation(s)
- M Szewczyk
- Universitätsfrauenklinik Rostock, Forschung, Rostock, Deutschland
| | - A Spitschak
- Universitätsmedizin Rostock, Institut für Experimentelle Gentherapie und Tumorforschung, Rostock, Deutschland
| | - S Knoll
- Universitätsmedizin Rostock, Institut für Experimentelle Gentherapie und Tumorforschung, Rostock, Deutschland
| | - DU Richter
- Universitätsfrauenklinik Rostock, Forschung, Rostock, Deutschland
| | - T Reimer
- Universitätsfrauenklinik Rostock, Forschung, Rostock, Deutschland
| | - BM Pützer
- Universitätsmedizin Rostock, Institut für Experimentelle Gentherapie und Tumorforschung, Rostock, Deutschland
| | - J Stubert
- Universitätsfrauenklinik Rostock, Forschung, Rostock, Deutschland
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Szewczyk M, Knoll S, Pützer BM, Richter DU, Reimer T, Stubert J. Bedeutung der Sauerstoffkonzentration für die plazentare Progranulinexpression im ersten Trimenon. Geburtshilfe Frauenheilkd 2017. [DOI: 10.1055/s-0037-1600074] [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] Open
Affiliation(s)
- M Szewczyk
- Universitätsfrauenklinik Rostock, Forschung, Rostock, Deutschland
| | - S Knoll
- Universitätsmedizin Rostock, Institut für Experimentelle Gentherapie und Tumorforschung, Rostock, Deutschland
| | - BM Pützer
- Universitätsmedizin Rostock, Institut für Experimentelle Gentherapie und Tumorforschung, Rostock, Deutschland
| | - DU Richter
- Universitätsfrauenklinik Rostock, Forschung, Rostock, Deutschland
| | - T Reimer
- Universitätsfrauenklinik Rostock, Forschung, Rostock, Deutschland
| | - J Stubert
- Universitätsfrauenklinik Rostock, Forschung, Rostock, Deutschland
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Schönweiz S, Knoll S, Anjass M, Braumüller M, Rau S, Streb C. “CLICKable” azide-functionalized phosphonates for the surface-modification of molecular and solid-state metal oxides. Dalton Trans 2016; 45:16121-16124. [DOI: 10.1039/c6dt03370a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A bifunctional phosphonate azide tether is reported which enables surface modification of molecular and solid state metal oxides as well as subsequent modification by CLICK chemistry.
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Affiliation(s)
- S. Schönweiz
- Institute of Inorganic Chemistry I
- Ulm University
- 89081 Ulm
- Germany
| | - S. Knoll
- Institute of Inorganic Chemistry I
- Ulm University
- 89081 Ulm
- Germany
| | - M. Anjass
- Institute of Inorganic Chemistry I
- Ulm University
- 89081 Ulm
- Germany
| | - M. Braumüller
- Institute of Inorganic Chemistry I
- Ulm University
- 89081 Ulm
- Germany
| | - S. Rau
- Institute of Inorganic Chemistry I
- Ulm University
- 89081 Ulm
- Germany
| | - C. Streb
- Institute of Inorganic Chemistry I
- Ulm University
- 89081 Ulm
- Germany
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Szewczyk M, Knoll S, Pützer B, Richter DU, Reimer T, Stubert J. Projektvorstellung: Untersuchungen zu Funktion und Regulation von Progranulin an humanen villösen Trophoblastzellen und deren Einfluss auf die Endothelzellfunktion. Geburtshilfe Frauenheilkd 2015. [DOI: 10.1055/s-0035-1548709] [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] Open
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15
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Knoll S, Jochum D, Talbird S. Vergleichende Kostennutzwertanalyse zweier neuer Pneumokokkenkonjugatimpfstoffe (PHiD-CV und PCV-13). Klin Padiatr 2010. [DOI: 10.1055/s-0030-1261445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Abstract
AIMS Development of a fast, sensitive and easy to handle method for the detection of Fusarium graminearum contamination in cereal samples by PCR. METHODS AND RESULTS DNA Detection Test Strips were used for PCR-product detection and the method was compared to agarose gel electrophoresis. A minimum of 0.26 ng of purified target DNA was detectable with the Test Strip Detection limit in less contaminated samples was slightly lower when gel electrophoresis was used for amplicon detection. In highly contaminated samples, detection limits of both methods were similar. CONCLUSIONS Detection of PCR products was performed in 20 min without the need of special technical equipment or hazardous fluorescent DNA dyes. SIGNIFICANCE AND IMPACT OF THE STUDY The new method described is useful for the screening of cereals in industrial quality control.
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Affiliation(s)
- S Knoll
- Technische Universität München, Lehrstuhl für Technische Mikrobiologie, Weihenstephaner Steig 16, D-85350 Freising, Weihenstephan, Germany
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Knoll S, Niessen L, Vogel RF. Application of a PCR protocol for the diagnosis of trichothecene producingFusarium species in deoxynivalenol contaminated wheat. Mycotoxin Res 2000; 16 Suppl 2:240-3. [DOI: 10.1007/bf02940048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Abstract
A previous study on furosemide-induced nephrocalcinosis (NC) showed only partial resolution of the calcifications after discontinuation of the diuretic. We investigated whether treatment with chlorothiazide (CTZ) will expedite the resolution of established furosemide-induced NC. Seventy-eight weanling male Sprague-Dawley rats were divided into eight groups. Three groups were studied for 1 week: A, control; B, furosemide 40 mg/kg per 24 h; C, CTZ 100 mg/kg per 24 h. Five groups were studied for 5 weeks: D, control; E, F, G, furosemide 40 mg/kg per 24 h for 1 week followed by 4 weeks of observation (E), CTZ 50 mg/kg per 24 h (F), and CTZ 100 mg/kg per 24 h (G) and; and CTZ 100 mg/kg per 24 h (H) for 5 weeks. At the end of each study period urine and blood were collected, one kidney was studied histologically and the contralateral ashed for quantitative calcium (Ca) analysis. Animals in group B developed NC with a kidney Ca content of 1,844 +/- 203 micrograms/g dry tissue compared with group A 248 +/- 86 (P < 0.05) and group C 256 +/- 56 (P < 0.05). There were no differences among the three groups with regard to creatinine clearance, urine phosphate (P) or Ca excretion, although the latter tended to be lower in group C. Animals in group E showed a reduction in the magnitude of NC, with kidney Ca of 550 +/- 398 micrograms/g dry tissue, which was lower than in group B (P < 0.05) but still higher than in groups D (140 +/- 27) (P < 0.05) or H (162 +/- 63) (P < 0.05). Kidney Ca content in groups F (497 +/- 142) and G (489 +/- 271 micrograms/g dry tissue) was similar to that in group E. There were no differences among the five groups with regard to creatinine clearance or urine P excretion. Urine Ca excretion was significantly lower in groups F and G than groups D and E. We conclude that once established, NC caused by furosemide is not affected by CTZ therapy in spite of the anticalciuric property of the latter.
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Affiliation(s)
- S Knoll
- Section of Pediatric Nephrology, Children's Mercy Hospital, University of Missouri at Kansas City 64108, USA
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Feng MR, Atherton J, Knoll S, Strenkoski CA, Wright DS. Determination of two CI-1007 sulfate metabolites in monkey plasma and urine. J Chromatogr B Biomed Sci Appl 1997; 693:159-66. [PMID: 9200530 DOI: 10.1016/s0378-4347(97)00015-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Two HPLC assays were developed and validated for simultaneous quantitation of two sulfate metabolites, PD 163637 (VI) and PD 163639 (VIII), of an investigational antipsychotic drug CI-1007 (I) in monkey plasma and urine. VI and VIII were identified as major metabolites in monkey plasma, and both were excreted in urine. Monkey plasma samples were directly injected after deproteinization, and urine samples were analyzed after a clean-up procedure using methyl-tert.-butyl ether. Liquid chromatographic separation was achieved on a Zorbax RX C8 analytical column using gradient elution. Column effluent was monitored using fluorescence detection with excitation and emission wavelengths of 254 and 330 nm, respectively. Minimum quantitation limit was 50 ng/ml in plasma and 100 ng/ml in urine. Linearity was demonstrated up to 3000 ng/ml in plasma and urine. Recoveries of the analytes from plasma and urine were greater than 85%. The assay has been applied to the determination of VI and VIII in plasma and urine samples from monkeys receiving oral administration of I.
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MESH Headings
- 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine/analogs & derivatives
- 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine/analysis
- 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine/blood
- 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine/urine
- Animals
- Antipsychotic Agents/analysis
- Antipsychotic Agents/blood
- Antipsychotic Agents/urine
- Benzenesulfonates/analysis
- Benzenesulfonates/blood
- Benzenesulfonates/urine
- Chromatography, High Pressure Liquid
- Drug Stability
- Haplorhini
- Pyridines/analysis
- Pyridines/blood
- Pyridines/urine
- Sensitivity and Specificity
- Spectrometry, Fluorescence
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Affiliation(s)
- M R Feng
- Parke-Davis Pharmaceutical Research, Division of Warner-Lambert Company, Ann Arbor, MI 48105, USA
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Abstract
Phosphorus is a major component of proteins, phospholipids, and nucleotides. The increased uptake of phosphorus by cells during erythropoiesis can result in severe hypophosphatemia. A case of severe hypophosphatemia due to accelerated erythropoiesis in response to Cefotetan-induced hemolytic anemia is described. The hypophosphatemia seen during hemolysis may be the result, rather than the cause, of the hemolysis.
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Affiliation(s)
- S Mohammed
- Division of Gastroenterology, Brown University, School of Medicine, Providence, Rhode Island
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Knoll S. Infection control strategies in the operating room. Can Oper Room Nurs J 1986; 4:13-8. [PMID: 3639763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Knoll S. Hawaiian facility is burgeoning. Same Day Surg 1978; 2:161-2. [PMID: 10238906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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