1
|
Diem L, Ovchinnikov A, Friedli C, Hammer H, Kamber N, Chan A, Salmen A, Findling O, Hoepner R. Efficacy and safety of ocrelizumab in patients with relapsing multiple sclerosis: Real-world experience of two Swiss multiple sclerosis centers. Mult Scler Relat Disord 2024; 86:105570. [PMID: 38604001 DOI: 10.1016/j.msard.2024.105570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 03/07/2024] [Accepted: 03/21/2024] [Indexed: 04/13/2024]
Abstract
BACKGROUND Ocrelizumab (OCR) is a humanized monoclonal antibody directed against CD-20 positive lymphocytes, mainly B-lymphocytes. OCR is approved for treatment of primary progressive (PPMS) and relapsing multiple sclerosis (RMS). This study aims to provide real-world safety and efficacy data of people with RMS treated with OCR in two Swiss Multiple Sclerosis (MS) centers. METHODS We have conducted a retrospective data analysis using the patient cohorts from the Cantonal Hospital Aarau and Bern University Hospital (RMS: n = 235). Statistical analyses were performed with Mann-Whitney U-Test, Chi-squared test and Spearman-Rho-Correlation. Adjustment for multiple testing was performed by Bonferroni procedure. RESULTS After initiation of OCR, there was a decrease in disease activity in RMS patients. In our study, 152/190 (80.0 %) RMS patients fulfilled the criteria for NEDA-3 12 months and 88/104 (84.6 %) showed NEDA-3 24 months after OCR initiation. The most frequent adverse events (AEs) in our study were infections, taking place in 78/235 (33.2 %) RMS patients. COVID-19 was the most common infection, followed by urinary infections and other respiratory infections and infectious adverse events occurred significantly more frequent in patients with reduced IgG serum concentration. CONCLUSIONS Our real-world study showed OCR being associated with low rates of any type of MS disease activity as indicated by NEDA-3. The adverse event profile is comparable to the known events especially infections and an association between infections and reduced IgG serum concentration was found.
Collapse
Affiliation(s)
- L Diem
- Department of Neurology, Inselspital, Bern University Hospital and University of Bern, Freiburgstrasse, Bern, Switzerland; Neurocenter, Lucerne Cantonal Hospital, Lucerne, 6000, Switzerland.
| | - A Ovchinnikov
- Department of Neurology, Cantonal Hospital Aarau (Kantonsspital Aarau), Tellstrasse, Aarau, Switzerland
| | - C Friedli
- Department of Neurology, Inselspital, Bern University Hospital and University of Bern, Freiburgstrasse, Bern, Switzerland; Department of Neurology, Waikato Hospital, Hamilton, New Zealand
| | - H Hammer
- Department of Neurology, Inselspital, Bern University Hospital and University of Bern, Freiburgstrasse, Bern, Switzerland
| | - N Kamber
- Department of Neurology, Inselspital, Bern University Hospital and University of Bern, Freiburgstrasse, Bern, Switzerland
| | - A Chan
- Department of Neurology, Inselspital, Bern University Hospital and University of Bern, Freiburgstrasse, Bern, Switzerland
| | - A Salmen
- Department of Neurology, Inselspital, Bern University Hospital and University of Bern, Freiburgstrasse, Bern, Switzerland
| | - O Findling
- Department of Neurology, Cantonal Hospital Aarau (Kantonsspital Aarau), Tellstrasse, Aarau, Switzerland
| | - R Hoepner
- Department of Neurology, Inselspital, Bern University Hospital and University of Bern, Freiburgstrasse, Bern, Switzerland
| |
Collapse
|
2
|
Diem L, Evangelopoulos ME, Karathanassis D, Natsis V, Kamber N, Hammer H, Friedli C, Chan A, Helbling A, Penner IK, Salmen A, Walther S, Stegmayer K, Hoepner R. Hypogammaglobulinemia: A contributing factor to multiple sclerosis fatigue? Mult Scler Relat Disord 2022; 68:104148. [PMID: 36063730 DOI: 10.1016/j.msard.2022.104148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 08/04/2022] [Accepted: 08/25/2022] [Indexed: 12/15/2022]
Abstract
OBJECTIVE Fatigue is one of the most disabling and difficult to treat symptoms of autoimmune diseases and frequently presents in people with multiple sclerosis (PwMS). Hypogammaglobulinemia for immunoglobulin G (IgG) affects approximately 8-25% of PwMS. We performed a retrospective analysis to investigate the association of MS-fatigue and IgG hypogammaglobulinemia. METHODS PwMS, treated at Eginition University Hospital Athens or at the University Hospital Bern, were included (n = 134 patients (Bern n = 99; Athens n = 35)). Mann Whitney U-test (MWT), ANOVA test, Chi2 test and multivariable linear regression models were run. RESULTS 97/134 (72.4%) PwMS reported fatigue. In the multivariable linear regression analysis, IgG serum concentration (-1.6, 95%CI -2.7 - -0.5, p = 0.006), daytime sleepiness (0.8, 95%CI 0.2-1.4, p = 0.009), and a depressive mood (1.1, 95%CI 0.8-1.4, p < 0.001) were significantly associated with fatigue. The impact of IgG serum concentration (-2.9 95%CI -4.7 - -1.1, p = 0.002) remained significant also in the subcohort of PwMS without depressive symptoms or daytime sleepiness. CONCLUSIONS We found an association between IgG hypogammaglobulinemia and fatigue in PwMS (Level of Evidence IV), which might be translated to other autoimmune diseases. It bears a potential therapeutic consequence considering IgG supplementation strategies, if our finding can be validated prospectively.
Collapse
Affiliation(s)
- L Diem
- Department of Neurology, Inselspital, Bern University Hospital and University of Bern, Freiburgstrasse, Bern, Switzerland.
| | - M E Evangelopoulos
- Department of Neurology, Aiginitio University Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - D Karathanassis
- Department of Neurology, Aiginitio University Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - V Natsis
- Department of Neurology, Aiginitio University Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - N Kamber
- Department of Neurology, Inselspital, Bern University Hospital and University of Bern, Freiburgstrasse, Bern, Switzerland
| | - H Hammer
- Department of Neurology, Inselspital, Bern University Hospital and University of Bern, Freiburgstrasse, Bern, Switzerland
| | - C Friedli
- Department of Neurology, Inselspital, Bern University Hospital and University of Bern, Freiburgstrasse, Bern, Switzerland
| | - A Chan
- Department of Neurology, Inselspital, Bern University Hospital and University of Bern, Freiburgstrasse, Bern, Switzerland
| | - A Helbling
- Department of Pulmonary Medicine and Allergology, Inselspital, Bern University Hospital and University of Bern, Switzerland
| | - I K Penner
- Department of Neurology, Inselspital, Bern University Hospital and University of Bern, Freiburgstrasse, Bern, Switzerland
| | - A Salmen
- Department of Neurology, Inselspital, Bern University Hospital and University of Bern, Freiburgstrasse, Bern, Switzerland
| | - S Walther
- Translational Research Center, University Hospital of Psychiatry and Psychotherapy, University of Bern, Bolligenstrasse 111, Bern, Switzerland
| | - K Stegmayer
- Translational Research Center, University Hospital of Psychiatry and Psychotherapy, University of Bern, Bolligenstrasse 111, Bern, Switzerland
| | - R Hoepner
- Department of Neurology, Inselspital, Bern University Hospital and University of Bern, Freiburgstrasse, Bern, Switzerland
| |
Collapse
|
3
|
Heesen C, Mokry C, Salmen A, Hegen H, Mäurer M, Warnke C, Gehring K, Berthele A, Meier U. German guideline for diagnosis and treatment of multiple sclerosis – a survey focusing neurologists in daily practise. Mult Scler Relat Disord 2022; 63:103828. [DOI: 10.1016/j.msard.2022.103828] [Citation(s) in RCA: 1] [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] [Received: 04/05/2022] [Accepted: 04/21/2022] [Indexed: 11/29/2022]
|
4
|
Mokry C, Warnke C, Gehring K, Hegen H, Salmen A, Kraemer M, Kleiter I, Fasshauer E, Scheiderbauer J, Lühmann D, Köpke S, Berthele A, Heesen C. Implementation study of the 2021 German guideline for diagnosis and treatment of multiple sclerosis. Mult Scler Relat Disord 2021; 57:103434. [PMID: 34920249 DOI: 10.1016/j.msard.2021.103434] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 11/19/2021] [Accepted: 11/27/2021] [Indexed: 10/19/2022]
Abstract
BACKGROUND In May 2021, a new guideline on the diagnosis and treatment of multiple sclerosis and related disorders was released in Germany. Since the success of a guideline depends on how it integrates into everyday clinical practice, the German Society for Neurology (DGN) has launched a multimethod implementation project. Here we report on the results based on the consultation version of the guideline. METHODS We used qualitative and quantitative data analyses to capture the nature and extent of barriers and facilitating factors to the implementation. We centered on the guideline's chapter A on diagnosis, relapse therapy, and immunotherapy of multiple sclerosis. We performed nine online focus group discussions and a web-based survey and analyzed emails and letters with comments from stakeholders and independent parties that were sent spontaneously or by invitation. RESULTS 94 neurologists answered the survey, and ≥70% agreed with the recommendations of the guideline on each major content topic. Barriers to implementation were detected in group discussions and written input. The most controversial issues of the guideline were "early treatment", "criteria for starting or switching therapy", "stepwise escalation versus early aggressive treatment", "classification of drugs into three categories of efficacy" and the scenarios on "treatment cessation". Some appreciated the highly structured recommendations, but others felt that the guideline restricts the free choice of therapy, or they were afraid of recourse claims. Some considered the guideline as too cautious regarding treatment initiation, possibly delaying necessary therapies. Others appreciated that conflicts of interests of the guideline's authoring group were minimized and thought that the new guideline is clearer, more extensive and practical. CONCLUSION In contrast to the survey, feedback in the focus group discussions and from individuals was diverse and sometimes more critical. Based on the overall feedback rate of about 250 people in relation to the number of 6500 board-certified neurologists in Germany, the overall appreciation of the guideline can only be considered as an indicator and not proof of acceptance. Results of this analysis were incorporated into several adjustments to the final guideline of 2021. Since the guideline is to be updated regularly under the auspices of a "living guideline", active interaction with users will continue to matter and help to improve it.
Collapse
Affiliation(s)
- C Mokry
- Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; Institute of Neuroimmunology and Multiple Sclerosis (INIMS), University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - C Warnke
- Department of Neurology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - K Gehring
- Neurocentre at Klosterforst, Itzehoe, Germany
| | - H Hegen
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - A Salmen
- Department of Neurology, Inselspital, Bern University Hospital, Bern, Switzerland
| | - M Kraemer
- Department of Neurology, Alfried Krupp Hospital Essen, Essen, Germany; Department of Neurology, Medical Faculty, Heinrich Heine University Duesseldorf, Duesseldorf, Germany
| | - I Kleiter
- Marianne-Strauß-Klinik, Behandlungszentrum Kempfenhausen für Multiple Sklerose Kranke gemeinnützige GmbH, Germany
| | - E Fasshauer
- German Multiple Sclerosis Society (DMSG), Bundesverband e.V., Hannover, Germany
| | - J Scheiderbauer
- Stiftung für Selbstbestimmung und Selbstvertretung von MS-Betroffene, Trier, Germany
| | - D Lühmann
- Department of Family medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - S Köpke
- Department for Nursing Sciences, Medical Faculty, University of Cologne, Cologne, Germany
| | - A Berthele
- School of Medicine, Dept. Of Neurology, Technical University Munich, Klinikum rechts der Isar, Munich, Germany
| | - C Heesen
- Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; Institute of Neuroimmunology and Multiple Sclerosis (INIMS), University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
| |
Collapse
|
5
|
Diem L, Hoepner R, Bagnoud M, Salmen A, Chan A, Friedli C. Natalizumab induced blood eosinophilia: A retrospective pharmacovigilance cohort study and review of the literature. J Neuroimmunol 2021; 353:577505. [PMID: 33548621 DOI: 10.1016/j.jneuroim.2021.577505] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 12/03/2020] [Revised: 01/22/2021] [Accepted: 01/27/2021] [Indexed: 10/22/2022]
Abstract
OBJECTIVE To describe frequency of natalizumab related eosinophilia and clinical symptoms of eosinophilic disease in our monocentric cohort. METHODS Comparison of clinical characteristics of 115 natalizumab treated and 116 untreated RRMS patients and review of literature. RESULTS 38% of natalizumab treated patients had eosinophilia, which occurred significantly more frequently compared to untreated MS patients (3%, p-value<0.001). In symptomatic patients, mean eosinophil counts were significantly higher than in asymptomatic patients and symptoms developed within one year. DISCUSSION Eosinophilia is a side effect of natalizumab and mostly asymptomatic. However, few patients develop within one year after start of natalizumab an eosinophilic disease as severe side effect.
Collapse
Affiliation(s)
- L Diem
- Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - R Hoepner
- Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - M Bagnoud
- Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland; Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
| | - A Salmen
- Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - A Chan
- Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - C Friedli
- Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
| |
Collapse
|
6
|
Kamm CP, Barin L, Gobbi C, Pot C, Calabrese P, Salmen A, Achtnichts L, Kesselring J, Puhan MA, von Wyl V. Factors influencing patient satisfaction with the first diagnostic consultation in multiple sclerosis: a Swiss Multiple Sclerosis Registry (SMSR) study. J Neurol 2019; 267:153-161. [PMID: 31595377 DOI: 10.1007/s00415-019-09563-y] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 09/26/2019] [Accepted: 09/28/2019] [Indexed: 01/12/2023]
Abstract
BACKGROUND Patient satisfaction is predictive of adherence, malpractice litigation and doctor-switching. OBJECTIVE To investigate which factors of the first diagnostic consultation (FDC) influence patient satisfaction and which topics persons with multiple sclerosis (PwMS) thought were missing. METHODS Using retrospective patient-reported data of the Swiss Multiple Sclerosis Registry from PwMS with relapsing disease onset, we fitted ordered logistic regression models on satisfaction with FDC, with socio-demographic and FDC features as explanatory factors. RESULTS 386 PwMS diagnosed after 1995 were included. Good satisfaction with the FDC was associated with a conversation more than 20 min [multivariable odds ratio, 95% confidence interval 3.9 (2.42; 6.27)], covering many topics [1.35 (1.19; 1.54) per additional topic], the presence of a significant others [1.74 (1.03; 2.94) ], and shared decision making [3.39 (1.74; 6.59)]. Not receiving a specific diagnosis was main driver for low satisfaction [0.29 (0.15; 0.55)]. Main missing topics concerned long-term consequences (reported by 6.7%), psychological aspects (6.2%) and how to obtain support and further information (5.2%). CONCLUSIONS A conversation of more than 20 min covering many MS relevant topics, a clear communication of the diagnosis, the presence of a close relative or significant other, as well as shared decision making enhanced patient satisfaction with the FDC. ClinicalTrials.gov Identifier: NCT02980640.
Collapse
Affiliation(s)
- Christian Philipp Kamm
- Department of Neurology, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland. .,Neurocentre, Luzerner Kantonsspital, 6000, Luzern, Switzerland.
| | - L Barin
- Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland.,Research Institute for the Evaluation of Public Policies (FBK-IRVAPP), via Santa Croce 77, 38122, Trento, Italy
| | - C Gobbi
- Faculty of Biomedical Sciences, Università Della Svizzera Italiana (USI), 6900, Lugano, Switzerland.,Department of Neurology, Neurocenter of Southern Switzerland, 6900, Lugano, Switzerland
| | - C Pot
- Service of Neurology and Neuroscience Research Center, Lausanne University Hospital, and University of Lausanne, Lausanne, Switzerland
| | - P Calabrese
- Behavioral Neurology and Neuropsychology, Division of Molecular and Cognitive Neuroscience, Department of Psychology, University of Basel, Basel, Switzerland
| | - A Salmen
- Department of Neurology, Inselspital, University Hospital Bern and University of Bern, Bern, Switzerland
| | - L Achtnichts
- Department of Neurology, Cantonal Hospital Aarau, Aarau, Switzerland
| | - J Kesselring
- Rehabilitation Centre, Kliniken Valens, Valens, Switzerland
| | - M A Puhan
- Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland
| | - V von Wyl
- Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland
| | | |
Collapse
|
7
|
Achtnichts L, Chan A, Czaplinski A, Derfuss T, Du Pasquier R, Findling O, Gobbi C, Hoepner R, Kamber N, Kamm CP, Kuhle J, Lalive P, Lutterotti A, Martin R, Müller S, Papadopoulou A, Pot C, Salmen A, Schippling S, Zecca C. Specific aspects of immunotherapy for multiple sclerosis in Switzerland: A structured commentary. Clinical and Translational Neuroscience 2019. [DOI: 10.1177/2514183x18822073] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
More than a dozen substances are meanwhile available for the disease-modifying immunotherapy of multiple sclerosis (MS). However, for some substances, there is a clear difference between approval in Switzerland (Swissmedic) and neighboring countries (European Medicines Agency (EMA)). In addition, limitations imposed by the Swiss Federal Office of Public Health in the specialties list (SL) have significant effects on use in daily clinical practice. In the following, we present consensus recommendations, which were reviewed and agreed upon by the Scientific Advisory Board of the Swiss Multiple Sclerosis Society and the Swiss Neurological Society. We explicitly focus on practice-relevant differences in the approval of MS immunotherapies in Switzerland compared with the EMA area and discuss further limitations (SL) and their impact on the use in clinical practice. Immunotherapies with the same approval in Switzerland and the EMA area and symptomatic therapies are not discussed here.
Collapse
Affiliation(s)
- L Achtnichts
- Department of Neurology, Cantonal Hospital Aarau, Aarau, Switzerland
| | - A Chan
- Department of Neurology, Bern University Hospital, University of Bern, Bern, Switzerland
| | | | - T Derfuss
- Neurologic Clinic and Policlinic, Departments of Medicine, Biomedicine and Clinical Research, University Hospital Basel, University of Basel, Basel, Switzerland
| | - R Du Pasquier
- Division of Neurology, Department of Clinical Neurosciences, Lausanne University Hospital, Lausanne, Switzerland
| | - O Findling
- Department of Neurology, Cantonal Hospital Aarau, Aarau, Switzerland
| | - C Gobbi
- Division of Neurology, Multiple Sclerosis Center, Neurocenter of Southern Switzerland, Ospedale Regionale, Lugano, Switzerland
| | - R Hoepner
- Department of Neurology, Bern University Hospital, University of Bern, Bern, Switzerland
| | - N Kamber
- Department of Neurology, Bern University Hospital, University of Bern, Bern, Switzerland
| | - CP Kamm
- Department of Neurology, Bern University Hospital, University of Bern, Bern, Switzerland
- Neurology and Neurorehabilitation Center, Lucerne Cantonal Hospital, Lucerne, Switzerland
| | - J Kuhle
- Neurologic Clinic and Policlinic, Departments of Medicine, Biomedicine and Clinical Research, University Hospital Basel, University of Basel, Basel, Switzerland
| | - P Lalive
- Department of Neurosciences, Division of Neurology, Unit of Neuroimmunology and Neuromuscular Diseases, University Hospital of Geneva, Geneva, Switzerland
| | - A Lutterotti
- Neuroimmunology and Multiple Sclerosis Research (nims), Department of Neurology, University Hospital Zurich and University of Zurich, Zürich, Switzerland
| | - R Martin
- Neuroimmunology and Multiple Sclerosis Research (nims), Department of Neurology, University Hospital Zurich and University of Zurich, Zürich, Switzerland
| | - S Müller
- Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen, Switzerland
| | - A Papadopoulou
- Neurologic Clinic and Policlinic, Departments of Medicine, Biomedicine and Clinical Research, University Hospital Basel, University of Basel, Basel, Switzerland
- NeuroCure Clinical Research Center, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - C Pot
- Division of Neurology, Department of Clinical Neurosciences, Lausanne University Hospital, Lausanne, Switzerland
| | - A Salmen
- Department of Neurology, Bern University Hospital, University of Bern, Bern, Switzerland
| | - S Schippling
- Neuroimmunology and Multiple Sclerosis Research (nims), Department of Neurology, University Hospital Zurich and University of Zurich, Zürich, Switzerland
- Neuroscience Center Zurich, University of Zurich and Federal Institute of Technology (ETH) Zurich, Zürich, Switzerland
| | - C Zecca
- Division of Neurology, Multiple Sclerosis Center, Neurocenter of Southern Switzerland, Ospedale Regionale, Lugano, Switzerland
| | | |
Collapse
|
8
|
Hoepner R, Miclea A, Popovic J, Kamber N, Chan A, Salmen A. Immunoglobulin levels may aid in the prediction of treatment response in anti-CD20 treatment of multiple sclerosis. Clinical and Translational Neuroscience 2018. [DOI: 10.1177/2514183x18764792] [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: 11/16/2022] Open
Affiliation(s)
- R Hoepner
- Department of Neurology, Inselspital, University Hospital and University of Bern, Freiburgstrasse, Bern, Switzerland
| | - A Miclea
- Department of Neurology, Inselspital, University Hospital and University of Bern, Freiburgstrasse, Bern, Switzerland
| | - J Popovic
- Department of Neurology, Inselspital, University Hospital and University of Bern, Freiburgstrasse, Bern, Switzerland
- Department of Neurology, Kliniken Valens, Rehazentrum Valens, Valens, Switzerland
| | - N Kamber
- Department of Neurology, Inselspital, University Hospital and University of Bern, Freiburgstrasse, Bern, Switzerland
| | - A Chan
- Department of Neurology, Inselspital, University Hospital and University of Bern, Freiburgstrasse, Bern, Switzerland
| | - A Salmen
- Department of Neurology, Inselspital, University Hospital and University of Bern, Freiburgstrasse, Bern, Switzerland
| |
Collapse
|
9
|
Klotz L, Berthele A, Brück W, Chan A, Flachenecker P, Gold R, Haghikia A, Hellwig K, Hemmer B, Hohlfeld R, Korn T, Kümpfel T, Lang M, Limmroth V, Linker RA, Meier U, Meuth SG, Paul F, Salmen A, Stangel M, Tackenberg B, Tumani H, Warnke C, Weber MS, Ziemssen T, Zipp F, Wiendl H. [Monitoring of blood parameters under course-modified MS therapy : Substance-specific relevance and current recommendations for action]. Nervenarzt 2017; 87:645-59. [PMID: 26927677 DOI: 10.1007/s00115-016-0077-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
With the approval of various substances for the immunotherapy of multiple sclerosis (MS), treatment possibilities have improved significantly over the last few years. Indeed, the choice of individually tailored preparations and treatment monitoring for the treating doctor is becoming increasingly more complex. This is particularly applicable for monitoring for a treatment-induced compromise of the immune system. The following article by members of the German Multiple Sclerosis Skills Network (KKNMS) and the task force "Provision Structures and Therapeutics" summarizes the practical recommendations for approved immunotherapy for mild to moderate and for (highly) active courses of MS. The focus is on elucidating the substance-specific relevance of particular laboratory parameters with regard to the mechanism of action and the side effects profile. To enable appropriate action to be taken in clinical practice, any blood work changes that can be expected, in addition to any undesirable laboratory findings and their causes and relevance, should be elucidated.
Collapse
Affiliation(s)
- L Klotz
- Department für Neurologie, Universitätsklinikum Münster, Albert-Schweitzer-Campus 1, Gebäude A1, 48149, Münster, Deutschland
| | - A Berthele
- Neurologische Klinik und Poliklinik, Klinikum rechts der Isar der TU München, Ismaninger Straße 22, 81675, München, Deutschland
| | - W Brück
- Institut für Neuropathologie, Universitätsmedizin Göttingen der Georg-August-Universität, Robert-Koch-Str. 40, 37075, Göttingen, Deutschland
| | - A Chan
- Neurologische Klinik, St. Josef-Hospital, Universitätsklinikum der Ruhr-Universität Bochum, Gudrunstr. 56, 44791, Bochum, Deutschland
| | - P Flachenecker
- Neurologisches Rehabilitationszentrum Quellenhof in Bad Wildbad GmbH, Kuranlagenallee 2, 75323, Bad Wildbad, Deutschland
| | - R Gold
- Neurologische Klinik, St. Josef-Hospital, Universitätsklinikum der Ruhr-Universität Bochum, Gudrunstr. 56, 44791, Bochum, Deutschland
| | - A Haghikia
- Neurologische Klinik, St. Josef-Hospital, Universitätsklinikum der Ruhr-Universität Bochum, Gudrunstr. 56, 44791, Bochum, Deutschland
| | - K Hellwig
- Neurologische Klinik, St. Josef-Hospital, Universitätsklinikum der Ruhr-Universität Bochum, Gudrunstr. 56, 44791, Bochum, Deutschland
| | - B Hemmer
- Neurologische Klinik und Poliklinik, Klinikum rechts der Isar der TU München, Ismaninger Straße 22, 81675, München, Deutschland
| | - R Hohlfeld
- Institut für Klinische Neuroimmunologie, Klinikum der Universität München, Campus Großhadern, Marchioninistr. 15, 81377, München, Deutschland
| | - T Korn
- Neurologische Klinik und Poliklinik, Klinikum rechts der Isar der TU München, Ismaninger Straße 22, 81675, München, Deutschland
| | - T Kümpfel
- Institut für Klinische Neuroimmunologie, Klinikum der Universität München, Campus Großhadern, Marchioninistr. 15, 81377, München, Deutschland
| | - M Lang
- NeuroTransConcept GmbH, Centers of Excellence, Pfauengasse 8, 89073, Ulm, Deutschland
| | - V Limmroth
- Klinik für Neurologie und Palliativmedizin, Kliniken der Stadt Köln, Ostmerheimer Str. 200, 51109, Köln - Merheim, Deutschland
| | - R A Linker
- Neurologische Klinik, Universitätsklinikum Erlangen, Schwabachanlage 6, 91054, Erlangen, Deutschland
| | - U Meier
- Berufsverband Deutscher Neurologen BDN, Am Ziegelkamp 1f, 41515, Grevenbroich, Deutschland
| | - S G Meuth
- Department für Neurologie, Universitätsklinikum Münster, Albert-Schweitzer-Campus 1, Gebäude A1, 48149, Münster, Deutschland
| | - F Paul
- Institut für Neuroimmunologie, Universitätsklinikum Charité, Schumannstr. 20/21, 10117, Berlin, Deutschland
| | - A Salmen
- Neurologische Klinik, St. Josef-Hospital, Universitätsklinikum der Ruhr-Universität Bochum, Gudrunstr. 56, 44791, Bochum, Deutschland
| | - M Stangel
- Klinik für Neurologie, Medizinische Hochschule Hannover, Carl-Neuberg-Str. 1, 30625, Hannover, Deutschland
| | - B Tackenberg
- Klinik für Neurologie, Philipps-Universität und Universitätsklinikum Marburg, Baldingerstr. 1, 35043, Marburg, Deutschland
| | - H Tumani
- Neurologische Universitätsklinik der Universität Ulm, Oberer Eselsberg 45, 89081, Ulm, Deutschland.,Fachklinik für Neurologie Dietenbronn, Dietenbronn 7, 88477, Schwendi, Deutschland
| | - C Warnke
- Klinik für Neurologie, Universitätsklinikum Düsseldorf, Moorenstraße 5, 40225, Düsseldorf, Deutschland
| | - M S Weber
- Institut für Neuropathologie, Universitätsmedizin Göttingen der Georg-August-Universität, Robert-Koch-Str. 40, 37075, Göttingen, Deutschland
| | - T Ziemssen
- Klinik und Poliklinik für Neurologie, Universitätsklinikum Carl Gustav Carus der TU Dresden, Fetscherstr. 74, 01307, Dresden, Deutschland
| | - F Zipp
- Klinik für Neurologie, Universitätsmedizin der Johannes-Gutenberg-Universität Mainz, Langenbeckstr. 1, 55131, Mainz, Deutschland
| | - H Wiendl
- Department für Neurologie, Universitätsklinikum Münster, Albert-Schweitzer-Campus 1, Gebäude A1, 48149, Münster, Deutschland.
| |
Collapse
|
10
|
Recke A, Oei A, Hübner F, Fechner K, Graf J, Hagenah J, May C, Woitalla D, Salmen A, Zillikens D, Gold R, Schlumberger W, Schmidt E. Parkinson disease and multiple sclerosis are not associated with autoantibodies against structural proteins of the dermal-epidermal junction. Br J Dermatol 2016; 175:407-9. [PMID: 26972435 DOI: 10.1111/bjd.14538] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- A Recke
- Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | - A Oei
- Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany
| | - F Hübner
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | - K Fechner
- Institute of Experimental Immunology, Euroimmun Inc., Lübeck, Germany
| | - J Graf
- Departments of Neurology, University of Lübeck, Lübeck, Germany
| | - J Hagenah
- Departments of Neurology, University of Lübeck, Lübeck, Germany
| | - C May
- Medizinisches Proteom-Center, Ruhr-Universität Bochum, Bochum, Germany
| | - D Woitalla
- Department of Neurology, Katholische Kliniken Ruhrhalbinsel GmbH, Essen, Germany
| | - A Salmen
- Department of Neurology, Inselspital, Bern University Hospital, Bern, Switzerland
| | - D Zillikens
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | - R Gold
- Department of Neurology, St. Josef Hospital, Ruhr-University, Bochum, Germany
| | - W Schlumberger
- Institute of Experimental Immunology, Euroimmun Inc., Lübeck, Germany
| | - E Schmidt
- Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany
| |
Collapse
|
11
|
Salmen A, von Ahsen N, Trampe AK, Hoepner R, Plavina T, Subramanyam M, Kuesters G, Gold R, Chan A. Longitudinal analyses of anti-JCV antibody index for risk assessment of progressive multifocal leukoencephalopathy. Mult Scler J Exp Transl Clin 2016; 2:2055217316630008. [PMID: 28607714 PMCID: PMC5433507 DOI: 10.1177/2055217316630008] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Risk assessment for natalizumab-associated progressive multifocal leukoencephalopathy (Nat-PML) comprises the anti-JC virus (JCV) antibody index (AI). The anti-JCV AI was longitudinally determined in a natalizumab-treated MS cohort (Nat-MS, n = 468) and samples of Nat-PML patients (n = 15). In Nat-MS, the median AI was 0.8 (25th to 75th percentile, 0.2–2.8) with an intra-individual coefficient of variation (CV) of 9.8% (4.8–17.6). Patients with an AI ≤ 0.9 exhibited higher CV. The AI was higher (3.4 (3.1–3.6)) in samples before Nat-PML diagnosis than in seropositive Nat-MS (2.4 (1.0–3.4), n = 298, p = 0.010). AIs ≥ 3.0 were associated with a 14.5-fold (95% CI 2.3–90.4) increased PML risk (p = 0.002). Groups with an AI below 1.5 exhibit higher variability or even serostatus fluctuation. AI dynamics require further investigation.
Collapse
Affiliation(s)
- A Salmen
- Department of Neurology, St. Josef-Hospital, Ruhr-University Bochum, Germany
| | | | - A K Trampe
- Department of Neurology, St. Josef-Hospital, Ruhr-University Bochum, Germany
| | - R Hoepner
- Department of Neurology, St. Josef-Hospital, Ruhr-University Bochum, Germany
| | | | | | | | - R Gold
- Department of Neurology, St. Josef-Hospital, Ruhr-University Bochum, Germany
| | - A Chan
- Department of Neurology, St. Josef-Hospital, Ruhr-University Bochum, Germany; Current address: Ambulantes Neurozentrum, Inselspital, Bern University Hospital, Bern, Switzerland
| |
Collapse
|
12
|
Schrewe L, Lill CM, Liu T, Salmen A, Gerdes LA, Guillot-Noel L, Akkad DA, Blaschke P, Graetz C, Hoffjan S, Kroner A, Demir S, Böhme A, Rieckmann P, ElAli A, Hagemann N, Hermann DM, Cournu-Rebeix I, Zipp F, Kümpfel T, Buttmann M, Zettl UK, Fontaine B, Bertram L, Gold R, Chan A. Investigation of sex-specific effects of apolipoprotein E on severity of EAE and MS. J Neuroinflammation 2015; 12:234. [PMID: 26669675 PMCID: PMC4681148 DOI: 10.1186/s12974-015-0429-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [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: 04/08/2015] [Accepted: 09/04/2015] [Indexed: 12/20/2022] Open
Abstract
Background Despite pleiotropic immunomodulatory effects of apolipoprotein E (apoE) in vitro, its effects on the clinical course of experimental autoimmune encephalomyelitis (EAE) and multiple sclerosis (MS) are still controversial. As sex hormones modify immunomodulatory apoE functions, they may explain contentious findings. This study aimed to investigate sex-specific effects of apoE on disease course of EAE and MS. Methods MOG35-55 induced EAE in female and male apoE-deficient mice was assessed clinically and histopathologically. apoE expression was investigated by qPCR. The association of the MS severity score (MSSS) and APOE rs429358 and rs7412 was assessed across 3237 MS patients using linear regression analyses. Results EAE disease course was slightly attenuated in male apoE-deficient (apoE−/−) mice compared to wildtype mice (cumulative median score: apoE−/− = 2 [IQR 0.0–4.5]; wildtype = 4 [IQR 1.0–5.0]; n = 10 each group, p = 0.0002). In contrast, EAE was more severe in female apoE−/− mice compared to wildtype mice (cumulative median score: apoE−/− = 3 [IQR 2.0–4.5]; wildtype = 3 [IQR 0.0–4.0]; n = 10, p = 0.003). In wildtype animals, apoE expression during the chronic EAE phase was increased in both females and males (in comparison to naïve animals; p < 0.001). However, in MS, we did not observe a significant association between MSSS and rs429358 or rs7412, neither in the overall analyses nor upon stratification for sex. Conclusions apoE exerts moderate sex-specific effects on EAE severity. However, the results in the apoE knock-out model are not comparable to effects of polymorphic variants in the human APOE gene, thus pinpointing the challenge of translating findings from the EAE model to the human disease. Electronic supplementary material The online version of this article (doi:10.1186/s12974-015-0429-y) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- L Schrewe
- Department of Neurology, St. Josef-Hospital, Ruhr-University Bochum, Gudrunstr. 56, Bochum, 44791, Germany.
| | - C M Lill
- Platform for Genome Analytics, Institutes of Neurogenetics & Integrative and Experimental Genomics, University of Lübeck, Lübeck, Germany. .,Department of Neurology, Focus Program Translational Neuroscience, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany. .,Department of Vertebrate Genomics, Max Planck Institute for Molecular Genetics, Berlin, Germany.
| | - T Liu
- Max Planck Institute for Human Development, Berlin, Germany.
| | - A Salmen
- Department of Neurology, St. Josef-Hospital, Ruhr-University Bochum, Gudrunstr. 56, Bochum, 44791, Germany.
| | - L A Gerdes
- Institute for Clinical Neuroimmunology, Medical Campus Grosshadern, Ludwig Maximilian University, Munich, Germany.
| | - L Guillot-Noel
- Inserm U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, F-75013, Paris, France.
| | - D A Akkad
- Department of Human Genetics, Ruhr-University Bochum, Bochum, Germany.
| | - P Blaschke
- Department of Neurology, University of Rostock, Rostock, Germany.
| | - C Graetz
- Department of Neurology, Focus Program Translational Neuroscience, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany.
| | - S Hoffjan
- Department of Human Genetics, Ruhr-University Bochum, Bochum, Germany.
| | - A Kroner
- Centre for Research in Neuroscience, The Research Institute of the McGill University Health Center, 1650 Cedar Avenue, Montreal, QC, H3G 1A4, Canada. .,Department of Neurology, University of Würzburg, Würzburg, Germany.
| | - S Demir
- Department of Neurology, St. Josef-Hospital, Ruhr-University Bochum, Gudrunstr. 56, Bochum, 44791, Germany.
| | - A Böhme
- Department of Neurology, St. Josef-Hospital, Ruhr-University Bochum, Gudrunstr. 56, Bochum, 44791, Germany.
| | - P Rieckmann
- Department of Neurology, University of Würzburg, Würzburg, Germany.
| | - A ElAli
- Neuroscience Axis, Research Center of CHU de Québec-CHUL, Department of Psychiatry and Neuroscience, Faculty of Medicine, Laval University, Québec City, QC, Canada. .,Department of Vascular Neurology and Dementia, University of Duisburg-Essen, Essen, Germany.
| | - N Hagemann
- Department of Vascular Neurology and Dementia, University of Duisburg-Essen, Essen, Germany.
| | - D M Hermann
- Department of Vascular Neurology and Dementia, University of Duisburg-Essen, Essen, Germany.
| | - I Cournu-Rebeix
- Inserm U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, F-75013, Paris, France.
| | - F Zipp
- Department of Neurology, Focus Program Translational Neuroscience, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany.
| | - T Kümpfel
- Institute for Clinical Neuroimmunology, Medical Campus Grosshadern, Ludwig Maximilian University, Munich, Germany.
| | - M Buttmann
- Department of Neurology, University of Würzburg, Würzburg, Germany.
| | - U K Zettl
- Department of Neurology, University of Rostock, Rostock, Germany.
| | - B Fontaine
- Inserm U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, F-75013, Paris, France. .,AP-HP, Hôpital de la Pitié Salpêtrière, Département des maladies du système nerveux, F-75013, Paris, France.
| | - L Bertram
- Platform for Genome Analytics, Institutes of Neurogenetics & Integrative and Experimental Genomics, University of Lübeck, Lübeck, Germany. .,Department of Vertebrate Genomics, Max Planck Institute for Molecular Genetics, Berlin, Germany. .,School of Public Health, Faculty of Medicine, Imperial College of Science, Technology and Medicine, London, UK.
| | - R Gold
- Department of Neurology, St. Josef-Hospital, Ruhr-University Bochum, Gudrunstr. 56, Bochum, 44791, Germany.
| | - A Chan
- Department of Neurology, St. Josef-Hospital, Ruhr-University Bochum, Gudrunstr. 56, Bochum, 44791, Germany.
| |
Collapse
|
13
|
Abstract
Therapeutic options in the treatment of multiple sclerosis (MS) have broadened notably over the past years, especially for relapsing-remitting forms of MS. The revision of the diagnostic criteria simplified and accelerated MS diagnosis, definitions of disease courses were operationalized focussing on disease activity and progression as major determinants. The paradigm of an early treatment initiation is accepted and evidence-based. All these aspects have led to an increasing complexity of therapeutic decision making. Besides a benefit-risk-evaluation for each substance, individual patient-related factors have to be considered, e.g. life and family planning. This article reviews new and established disease-modifying drugs in the context of disease courses and stages and benefit-risk-considerations.
Collapse
|
14
|
Salmen A, Linker R, Gold R. Neue Behandlungsziele bei Multipler Sklerose: Mögliche neuroprotektive Aspekte etablierter und neuer Immuntherapeutika. Akt Neurol 2014. [DOI: 10.1055/s-0034-1384606] [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)
- A. Salmen
- Klinik für Neurologie, St. Josef-Hospital, Ruhr-Universität Bochum
| | - R. Linker
- Klinik für Neurologie, Universitätsklinikum Erlangen
| | - R. Gold
- Klinik für Neurologie, St. Josef-Hospital, Ruhr-Universität Bochum
| |
Collapse
|
15
|
Salmen A, Gold R, Chan A. Management of disease-modifying treatments in neurological autoimmune diseases of the central nervous system. Clin Exp Immunol 2014; 176:135-48. [PMID: 24358961 PMCID: PMC3992026 DOI: 10.1111/cei.12258] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [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] [Accepted: 12/19/2013] [Indexed: 12/19/2022] Open
Abstract
The therapeutic armamentarium for autoimmune diseases of the central nervous system, specifically multiple sclerosis and neuromyelitis optica, is steadily increasing, with a large spectrum of immunomodulatory and immunosuppressive agents targeting different mechanisms of the immune system. However, increasingly efficacious treatment options also entail higher potential for severe adverse drug reactions. Especially in cases failing first-line treatment, thorough evaluation of the risk-benefit profile of treatment alternatives is necessary. This argues for the need of algorithms to identify patients more likely to benefit from a specific treatment. Moreover, paradigms to stratify the risk for severe adverse drug reactions need to be established. In addition to clinical/paraclinical measures, biomarkers may aid in individualized risk-benefit assessment. A recent example is the routine testing for anti-John Cunningham virus antibodies in natalizumab-treated multiple sclerosis patients to assess the risk for the development of progressive multi-focal leucoencephalopathy. Refined algorithms for individualized risk assessment may also facilitate early initiation of induction treatment schemes in patient groups with high disease activity rather than classical escalation concepts. In this review, we will discuss approaches for individiualized risk-benefit assessment both for newly introduced agents as well as medications with established side-effect profiles. In addition to clinical parameters, we will also focus on biomarkers that may assist in patient selection.
Collapse
Affiliation(s)
- A Salmen
- Department of Neurology, St Josef-Hospital, Ruhr-University, Bochum, Germany
| | | | | |
Collapse
|
16
|
McAvin JC, Reilly PA, Roudabush RM, Barnes WJ, Salmen A, Jackson GW, Beninga KK, Astorga A, McCleskey FK, Huff WB, Niemeyer D, Lohman KL. Sensitive and specific method for rapid identification of Streptococcus pneumoniae using real-time fluorescence PCR. J Clin Microbiol 2001; 39:3446-51. [PMID: 11574554 PMCID: PMC88370 DOI: 10.1128/jcm.39.10.3446-3451.2001] [Citation(s) in RCA: 125] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Molecular surveillance of pathogens has shown the need for rapid and dependable methods for the identification of organisms of clinical and epidemiological importance. As the leading cause of community-acquired pneumonia, Streptococcus pneumoniae was used as a model organism to develop and refine a real-time fluorescence PCR assay and enhanced DNA purification method. Seventy clinical isolates of S. pneumoniae, verified by latex agglutination, were screened against 26 negative control clinical isolates employing a TaqMan assay on a thermocycler (LightCycler). The probe, constructed from the lytA gene, correctly detected all S. pneumoniae genomes without cross-reaction to negative controls. The speed and ease of this approach will make it adaptable to identification of many bacterial pathogens and provide potential for adaptation to direct detection from patient specimens.
Collapse
Affiliation(s)
- J C McAvin
- Molecular Epidemiology Branch, Air Force Institute for Environment and Occupational Health Risk Analysis/Epidemiology Surveillance Division, Brooks Air Force Base, San Antonio, Texas 78235, USA
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Redkar R, Kalns J, Butler W, Krock L, McCleskey F, Salmen A, Piepmeier E, DelVecchio V. Identification of bacteria from a non-healing diabetic foot wound by 16 S rDNA sequencing. Mol Cell Probes 2000; 14:163-9. [PMID: 10860714 DOI: 10.1006/mcpr.2000.0303] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Approximately 10-20% of diabetic foot wounds fail initial antibiotic treatment. It is generally believed that several bacterial species may be present in these types of wounds. Because some of these organisms cannot be easily cultured, proper identification is problematic and thus, appropriate treatment modalities cannot be applied. This report examined the bacterial flora present in a chronic diabetic foot wound that failed antibiotic treatment. A tissue sample was collected from the base of the wound and used for standard microbiological culturing. DNA from the sample was used to amplify bacterial 16 S rDNA gene sequences and a library of these sequences was made. The clones were placed into two major groups on the basis of their melting temperatures. Representatives of these groups were sequenced, and information was used to identify the bacteria present in the wound. The culture-based method identified a single anaerobic species, Bacteroides fragilis. The method employing rDNA sequencing identified B. fragilis as a dominant organism and Pseudomonas (Janthinobacterium) mephitica as a minor component. The results indicate that rDNA sequencing approach can be an important tool in the identification of bacteria from wounds.
Collapse
MESH Headings
- Aged
- Bacterial Infections/complications
- Bacterial Infections/diagnosis
- Bacterial Infections/drug therapy
- Bacterial Infections/microbiology
- Bacteroides fragilis/genetics
- Bacteroides fragilis/isolation & purification
- Chronic Disease
- Cloning, Molecular
- DNA, Bacterial/analysis
- DNA, Bacterial/genetics
- DNA, Ribosomal/analysis
- DNA, Ribosomal/genetics
- Diabetes Mellitus, Type 1/complications
- Diabetes Mellitus, Type 1/microbiology
- Diabetic Foot/complications
- Diabetic Foot/drug therapy
- Diabetic Foot/microbiology
- Gene Library
- Genes, rRNA/genetics
- Humans
- Male
- Nucleic Acid Denaturation
- Oligonucleotide Probes/genetics
- Phylogeny
- Polymerase Chain Reaction
- Pseudomonas/genetics
- Pseudomonas/isolation & purification
- RNA, Ribosomal, 16S/analysis
- RNA, Ribosomal, 16S/genetics
- Sequence Analysis, DNA
- Temperature
Collapse
Affiliation(s)
- R Redkar
- Institute of Molecular Biology and Medicine, University of Scranton, Scranton, PA 18510, USA
| | | | | | | | | | | | | | | |
Collapse
|
18
|
Cheng S, McCleskey FK, Gress MJ, Petroziello JM, Liu R, Namdari H, Beninga K, Salmen A, DelVecchio VG. A PCR assay for identification of Enterococcus faecium. J Clin Microbiol 1997; 35:1248-50. [PMID: 9114416 PMCID: PMC232738 DOI: 10.1128/jcm.35.5.1248-1250.1997] [Citation(s) in RCA: 79] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Enterococcus faecium has recently emerged as a serious nosocomial pathogen. The prevalence and severity of enterococcal infections, the mortality rate from such infections, and the antibiotic resistance of enterococci are often species dependent. Since conventional biochemical methods fail to differentiate E. faecium from certain newly described enterococcal species, a PCR-based assay was developed for the rapid identification of E. faecium.
Collapse
Affiliation(s)
- S Cheng
- Institute of Molecular Biology and Medicine, University of Scranton, Pennsylvania 18510, USA
| | | | | | | | | | | | | | | | | |
Collapse
|