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Klenk C, Clevert AD. Contrast-Enhanced Ultrasonography (CEUS) reveals active bleeding into
an abdominal hematoma in a patient with ongoing subcutaneous
injections. ROFO-FORTSCHR RONTG 2022. [DOI: 10.1055/s-0042-1756613] [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: 11/06/2022]
Affiliation(s)
- C Klenk
- Klinikum rechts der Isar der Technischen Universität
München, München
| | - A D Clevert
- Klinik und Poliklinik für Radiologie, LMU Klinikum,
München
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Frickmann H, Klenk C, Warnke P, Redanz S, Podbielski A. Influence of Probiotic Culture Supernatants on In Vitro Biofilm Formation of Staphylococci. Eur J Microbiol Immunol (Bp) 2018; 8:119-127. [PMID: 30719328 PMCID: PMC6348700 DOI: 10.1556/1886.2018.00022] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Accepted: 08/27/2018] [Indexed: 01/15/2023] Open
Abstract
Background The effects of cell-free culture supernatants of probiotic Lactobacillus rhamnosus GG and Streptococcus salivarius K12 on replication and biofilm forming of Staphylococcus aureus and S. epidermidis were assessed in vitro. Methods S. aureus and S. epidermidis strains were exposed to cell-free culture supernatants of L. rhamnosus GG and S. salivarius K12 at different concentrations starting at 0, 4, and 24 h after the onset of incubation. Bacterial amplification was measured on microplate readers, as well as biofilm growth after safranine staining. Scanning electron microscopy was performed for visualization of biofilm status. Results The S. salivarius K12 culture supernatant not only reduced or prevented the formation and maturation of fresh biofilms but even caused a reduction of preformed S. epidermidis biofilms. The L. rhamnosus GG culture supernatant did not show clear inhibitory effects regardless of concentration or time of addition of supernatant, and even concentration-depending promotional effects on the planktonic and biofilm growth of S. aureus and S. epidermidis were observed. Conclusion In particular, the inhibitory effects of the S. salivarius K12 culture supernatant on the formation of staphylococcal biofilms are of potential relevance for biofilm-associated diseases and should be further assessed by in vivo infection models.
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Affiliation(s)
- Hagen Frickmann
- Institute for Medical Microbiology, Virology and Hygiene, University Medicine Rostock, Rostock, Germany.,Department of Microbiology and Hospital Hygiene, Bundeswehr Hospital Hamburg, Hamburg, Germany
| | - Caroline Klenk
- Institute for Medical Microbiology, Virology and Hygiene, University Medicine Rostock, Rostock, Germany
| | - Philipp Warnke
- Institute for Medical Microbiology, Virology and Hygiene, University Medicine Rostock, Rostock, Germany
| | - Sylvio Redanz
- Institute for Medical Microbiology, Virology and Hygiene, University Medicine Rostock, Rostock, Germany.,Kreth Lab, Department of Restorative Dentistry, Oregon Health & Science University, Portland, OR, USA
| | - Andreas Podbielski
- Institute for Medical Microbiology, Virology and Hygiene, University Medicine Rostock, Rostock, Germany
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Klenk C, Brunner H, Nickel T, Sagmeister F, Infanger D, Billich C, Beer M, Schuetz U, Schmidt-Trucksaess A. P649Harmonic cardiac adaptation of myocardial structure and mass in the course of a multistage marathon over 4.486 km. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.p649] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- C Klenk
- University of Basel, Department of Sport, Exercise and Health, Division of Sports and Exercise Medicine, Basel, Switzerland
| | - H Brunner
- University Hospital Ulm, Department of Diagnostic and Interventional Radiology, Ulm, Germany
| | - T Nickel
- University Hospital Grosshadern, Ludwig-Maximilians-University, Department of Internal Medicine/Cardiology, Munich, Germany
| | - F Sagmeister
- University Hospital Ulm, Department of Diagnostic and Interventional Radiology, Ulm, Germany
| | - D Infanger
- University of Basel, Department of Sport, Exercise and Health, Division of Sports and Exercise Medicine, Basel, Switzerland
| | - C Billich
- University Hospital Ulm, Department of Diagnostic and Interventional Radiology, Ulm, Germany
| | - M Beer
- University Hospital Ulm, Department of Diagnostic and Interventional Radiology, Ulm, Germany
| | - U Schuetz
- University Hospital Ulm, Department of Diagnostic and Interventional Radiology, Ulm, Germany
| | - A Schmidt-Trucksaess
- University of Basel, Department of Sport, Exercise and Health, Division of Sports and Exercise Medicine, Basel, Switzerland
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Hanssen H, Minghetti A, Magon S, Rossmeissl A, Rasenack M, Papadopoulou A, Klenk C, Faude O, Zahner L, Sprenger T, Donath L. Effects of different endurance exercise modalities on migraine days and cerebrovascular health in episodic migraineurs: A randomized controlled trial. Scand J Med Sci Sports 2018; 28:1103-1112. [PMID: 29161767 DOI: 10.1111/sms.13023] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/13/2017] [Indexed: 12/12/2022]
Abstract
Aerobic exercise training is a promising complementary treatment option in migraine and can reduce migraine days and improve retinal microvascular function. Our aim was to elucidate whether different aerobic exercise programs at high vs moderate intensities distinctly affect migraine days as primary outcome and retinal vessel parameters as a secondary. In this randomized controlled trial, migraine days were recorded by a validated migraine diary in 45 migraineurs of which 36 (female: 28; age: 36 (SD:10)/BMI: 23.1 (5.3) completed the training period (dropout: 20%). Participants were assigned (Strata: age, gender, fitness and migraine symptomatology) to either high intensity interval training (HIT), moderate continuous training (MCT), or a control group (CON). Intervention groups trained twice a week over a 12-week intervention period. Static retinal vessel analysis, central retinal arteriolar (CRAE) and venular (CRVE) diameters, as well as the arteriolar-to-venular diameter ratio (AVR) were obtained for cerebrovascular health assessment. Incremental treadmill testing yielded maximal and submaximal fitness parameters. Overall, moderate migraine day reductions were observed (ηP2 = .12): HIT revealed 89% likely beneficial effects (SMD = 1.05) compared to MCT (SMD = 0.50) and CON (SMD = 0.59). Very large intervention effects on AVR improvement (ηP2 = 0.27), slightly favoring HIT (SMD=-0.43) over CON (SMD=0), were observed. HIT seems more effective for migraine day reduction and improvement of cerebrovascular health compared to MCT. Intermittent exercise programs of higher intensities may need to be considered as an additional treatment option in migraine patients.
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Affiliation(s)
- H Hanssen
- Department of Sport, Exercise and Health, University of Basel, Basel, Switzerland
| | - A Minghetti
- Department of Sport, Exercise and Health, University of Basel, Basel, Switzerland
| | - S Magon
- Department of Neurology, University Hospital Basel, Basel, Switzerland.,Medical Image Analysis Center, University Hospital Basel, Basel, Switzerland
| | - A Rossmeissl
- Department of Sport, Exercise and Health, University of Basel, Basel, Switzerland
| | - M Rasenack
- Department of Neurology, University Hospital Basel, Basel, Switzerland.,Medical Image Analysis Center, University Hospital Basel, Basel, Switzerland
| | - A Papadopoulou
- Department of Neurology, University Hospital Basel, Basel, Switzerland
| | - C Klenk
- Department of Sport, Exercise and Health, University of Basel, Basel, Switzerland
| | - O Faude
- Department of Sport, Exercise and Health, University of Basel, Basel, Switzerland
| | - L Zahner
- Department of Sport, Exercise and Health, University of Basel, Basel, Switzerland
| | - T Sprenger
- Department of Neurology, University Hospital Basel, Basel, Switzerland.,Medical Image Analysis Center, University Hospital Basel, Basel, Switzerland.,Department of Neurology, DKD HELIOS Klinik Wiesbaden, Wiesbaden, Germany
| | - L Donath
- Department of Sport, Exercise and Health, University of Basel, Basel, Switzerland.,German Sport University, Institute of Exercise Training and Computer Science in Sport, Cologne, Germany
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Klenk C, Egli B, Schlesinger T. Exploring how voluntary sports clubs implement external advisory inputs. Managing Sport and Leisure 2017. [DOI: 10.1080/23750472.2017.1386587] [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: 10/18/2022]
Affiliation(s)
- C. Klenk
- Institute of Sports Science, University of Bern, Bern, Switzerland
| | - B. Egli
- Swiss Football Association, Bern, Switzerland
| | - T. Schlesinger
- Institute of Human Movement Science, Chemnitz University of Technology, Chemnitz, Germany
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Tong S, Li M, Vincent A, Compans RW, Fritsch E, Beier R, Klenk C, Ohuchi M, Klenk HD. Regulation of fusion activity by the cytoplasmic domain of a paramyxovirus F protein. Virology 2002; 301:322-333. [PMID: 12359434 DOI: 10.1006/viro.2002.1594] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
SER virus is a member of the family Paramyxoviridae, genus Rubulavirus, which has been isolated from pigs. It is very closely related to SV5 virus serologically, in protein profile, and in nucleotide sequence. However, unlike SV5, SER induces minimal syncytium formation in infected CV-1 or BHK cells. Fluorescence transfer experiments between labeled erythrocytes and infected MDBK cells revealed that SER also induces hemifusion and pore formation with reduced efficiency. The virion polypeptide profiles of SER and SV5 are very similar, except that the SER F1 subunit shows an apparent molecular weight that is about 2 kDa higher than that of SV5. Comparison of the deduced amino acid sequences revealed the SER F (551 aa) to be longer than SV5 F (529 aa) by 22 residues in the cytoplasmic tail (CT) domain. The HN and M gene sequences of the viruses were found to be very similar. The SER F showed minimal fusion activity when coexpressed with either SV5 or SER HN. In contrast, SV5 F was highly fusogenic when coexpressed with either HN protein, indicating that the restricted fusion capacity of SER virus is a property of its F protein. Truncation in the CT of SER F by 22 residues completely rescued its ability to cause syncytium formation, whereas other truncations rescued syncytium formation partially. These results demonstrate that an elongated CT of a paramyxovirus F protein suppresses its membrane fusion activity.
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Affiliation(s)
- S Tong
- Department of Microbiology, Emory University School of Medicine, Atlanta, Georgia 30322, USA
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