1
|
Bräuer AU, Sevecke-Rave J, Gläser A, Nahrath P, Hummel T, Witt M. Optimization of mRNA extraction from human nasal mucosa biopsies for gene expression profile analysis by qRT-PCR. Clin Anat 2023; 36:1001-1006. [PMID: 37337364 DOI: 10.1002/ca.24081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 05/28/2023] [Indexed: 06/21/2023]
Abstract
Quantitative real-time reverse transcriptase polymerase chain reaction (qRT-PCR) is the gold-standard method for analyzing modifications in gene expression in cells and tissues. However, large quantities of high-quality RNA samples are needed for analyzing the expression of multiple genes from one human tissue sample. Here, we provide an optimized protocol for extracting large amounts of RNA from human nasal mucosal biopsies. The quality and quantity of samples were sufficient for qRT-PCR analyses of the expressions of various genes, in duplicate. In contrast to other protocols, we optimized RNA isolation to increase the amount from nasal biopsy samples for analyses of multiple genes. In most previous publications, expressions of only one or a few genes, including housekeeping genes, were analyzed because the amount of biological material was small. We were able to improve our protocol with respect to the yield and quality of RNA. This is likely to produce better results from molecular analyses of very small biopsy samples of human nasal mucosa.
Collapse
Affiliation(s)
- A U Bräuer
- Research Group Anatomy, School of Medicine and Health Sciences, Carl von Ossietzky University Oldenburg, Oldenburg, Germany
- Research Center Neurosensory Science, Carl von Ossietzky University Oldenburg, Oldenburg, Germany
| | - J Sevecke-Rave
- Research Group Anatomy, School of Medicine and Health Sciences, Carl von Ossietzky University Oldenburg, Oldenburg, Germany
| | - A Gläser
- Research Group Anatomy, School of Medicine and Health Sciences, Carl von Ossietzky University Oldenburg, Oldenburg, Germany
| | - P Nahrath
- Smell and Taste Clinic, Department of Otorhinolaryngology, Medical Faculty Carl-Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - T Hummel
- Smell and Taste Clinic, Department of Otorhinolaryngology, Medical Faculty Carl-Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - M Witt
- Institute of Anatomy & Centre of Transdisciplinary Neuroscience Rostock, University Medical Center Rostock, Rostock, Germany
| |
Collapse
|
2
|
Gunder N, Dörig P, Witt M, Welge-Lüssen A, Menzel S, Hummel T. Future therapeutic strategies for olfactory disorders: electrical stimulation, stem cell therapy, and transplantation of olfactory epithelium-an overview. HNO 2023; 71:35-43. [PMID: 36734997 PMCID: PMC9897160 DOI: 10.1007/s00106-022-01249-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/19/2022] [Indexed: 02/04/2023]
Abstract
Olfactory disorders may be temporary or permanent and can have various causes. Currently, many COVID-19 patients report a reduced or complete loss of olfactory function. A wide range of treatment options have been investigated in the past, such as olfactory training, acupuncture, medical therapy, transcranial magnetic stimulation, or surgical excision of olfactory epithelium, e.g., in severe qualitative smell disorders. The development of a bioelectric nose, e.g., in connection with direct electrical stimulation or transplantation of olfactory epithelium or stem cells, represent treatment options of the future. The basis of these developments and the state of knowledge is discussed in the following work.
Collapse
Affiliation(s)
- N Gunder
- Klinik und Poliklinik für Hals-, Nasen- und Ohrenheilkunde, Universitätsklinikum Carl Gustav Carus an der Technischen Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany.
| | - P Dörig
- Universitäts-HNO Klinik Basel, Basel, Switzerland
| | - M Witt
- Institut für Anatomie, Universitätsmedizin Rostock, Rostock, Germany
| | | | - S Menzel
- Klinik und Poliklinik für Hals-, Nasen- und Ohrenheilkunde, Universitätsklinikum Carl Gustav Carus an der Technischen Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany
| | - T Hummel
- Klinik und Poliklinik für Hals-, Nasen- und Ohrenheilkunde, Universitätsklinikum Carl Gustav Carus an der Technischen Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany
| |
Collapse
|
3
|
Möbs C, Salheiser M, Bleise F, Witt M, Mayer JU. Basophils control T cell priming through soluble mediators rather than antigen presentation. Front Immunol 2023; 13:1032379. [PMID: 36846020 PMCID: PMC9950813 DOI: 10.3389/fimmu.2022.1032379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 10/10/2022] [Indexed: 02/12/2023] Open
Abstract
Basophils play an important role in the development of type 2 immunity and have been linked to protective immunity against parasites but also inflammatory responses in allergic diseases. While typically classified as degranulating effector cells, different modes of cellular activation have been identified, which together with the observation that different populations of basophils exist in the context of disease suggest a multifunctional role. In this review we aim to highlight the role of basophils play in antigen presentation of type 2 immunity and focus on the contribution basophils play in the context of antigen presentation and T cell priming. We will discuss evidence suggesting that basophils perform a direct role in antigen presentation and relate it to findings that indicate cellular cooperation with professional antigen-presenting cells, such as dendritic cells. We will also highlight tissue-specific differences in basophil phenotypes that might lead to distinct roles in cellular cooperation and how these distinct interactions might influence immunological and clinical outcomes of disease. This review thus aims to consolidate the seemingly conflicting literature on the involvement of basophils in antigen presentation and tries to find a resolution to the discussion whether basophils influence antigen presentation through direct or indirect mechanisms.
Collapse
Affiliation(s)
| | | | | | | | - Johannes U. Mayer
- Department of Dermatology and Allergology, Philipps-Universität Marburg, Marburg, Germany
| |
Collapse
|
4
|
Böker E, Janke C, Brunn S, Brock D, Jurig K, Witt M. Evaluation of the rehabilitation process after ACL rupture in childhood and adolescence. Dtsch Z Sportmed 2022. [DOI: 10.5960/dzsm.2022.545] [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] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Problem: Serious knee injuries are gaining epidemiological importance. Especially in childhood, a very significant increase in knee ligament injuries, in particular ACL ruptures, can be observed. In Saxony alone, more than 70 ruptures of the anterior cruciate ligament occur each year as a result of accidents during physical education (PE). Six months after surgery, the students are normally classified as fully fit for sports and are allowed to participate in PE without restrictions. However, the number of reinjuries is very high which limits the quality of life of those affected in the long term and places a heavy financial burden on insurance companies. Methods: Therefore the status quo in the rehabilitation of schoolchildren after ACL rupture was assessed using a multilevel test battery and taking into account known risk factors such as gender, motor competence and BMI. Results: The results show that there are large interindividual differences in the funktional outcomes as well as a large discrepancy between rehabilitation status and return to physical education. Discussion: In order to effectively manage the process of rehabilitation and return to school sports, individual information is necessary in the multimodal setting. To this end, all those involved should be sensitized and trained. Key Words: Knee Injury, Return-to-Sport, Biomechanics of Sports, Prevention, School Sports
Collapse
|
5
|
Dörig P, Gunder N, Witt M, Welge-Lüssen A, Hummel T. [Future therapeutic strategies for olfactory disorders: electrical stimulation, stem cell therapy, and transplantation of olfactory epithelium-an overview]. HNO 2021; 69:623-632. [PMID: 33988723 PMCID: PMC8120256 DOI: 10.1007/s00106-021-01060-x] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/15/2021] [Indexed: 11/08/2022]
Abstract
Passagere oder permanente Riechstörungen können verschiedene Ursachen haben. Ganz aktuell berichtet eine Vielzahl von Patienten im Rahmen von COVID-19-Infektionen über ein fehlendes oder vermindertes Riechvermögen. In der Vergangenheit wurden vielfältige Therapieoptionen untersucht, diese variieren vom Riechtraining über Akupunktur und medikamentöse Therapien bis hin zur transkraniellen Magnetstimulation oder, z. B. bei ausgeprägten qualitativen Riechstörungen, der chirurgischen Resektion der Riechschleimhaut. Die Entwicklung einer bioelektrischen Nase, z. B. in Verbindung mit direkter elektrischer Stimulation des Bulbus olfactorius, oder die Transplantation von Riechschleimhaut oder von Stammzellen stellen Behandlungsmöglichkeiten der Zukunft dar. Die Grundlagen für diese Entwicklungen sowie der Stand des Wissens werden in der vorliegenden Arbeit erläutert.
Collapse
Affiliation(s)
- P Dörig
- Universitäts-HNO Klinik Basel, Petersgraben 4, 4031, Basel, Schweiz.
| | - N Gunder
- Universitäts-HNO Klinik Dresden, Dresden, Deutschland
| | - M Witt
- Institut für Anatomie, Universitätsmedizin Rostock, Rostock, Deutschland
| | - A Welge-Lüssen
- Universitäts-HNO Klinik Basel, Petersgraben 4, 4031, Basel, Schweiz
| | - T Hummel
- Universitäts-HNO Klinik Dresden, Dresden, Deutschland
| |
Collapse
|
6
|
Kartini DA, Sokol O, Wiedemann J, Tinganelli W, Witt M, Camazzola G, Krämer M, Talabnin C, Kobdaj C, Fuss MC. Validation of a pseudo-3D phantom for radiobiological treatment plan verifications. Phys Med Biol 2020; 65:225039. [PMID: 32937608 DOI: 10.1088/1361-6560/abb92d] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Performing realistic and reliable in vitro biological dose verification with good resolution for a complex treatment plan remains a challenge in particle beam therapy. Here, a new 3D bio-phantom consisting of 96-well plates containing cells embedded into Matrigel matrix was investigated as an alternative tool for biological dose verification. Feasibility tests include cell growth in the Matrigel as well as film dosimetric experiments that rule out the appearance of field inhomogeneities due to the presence of the well plate irregular structure. The response of CHO-K1 cells in Matrigel to radiation was studied by obtaining survival curves following x-ray and monoenergetic 12C ion irradiation, which showed increased radioresistance of 3D cell cultures in Matrigel as compared to a monolayer. Finally, as a proof of concept, a 12C treatment plan was optimized using in-house treatment planning system TRiP98 for uniform cell survival in a rectangular volume and employed to irradiate the 3D phantom. Cell survival distribution in the Matrigel-based phantom was analyzed and compared to cell survival in a reference setup using cell monolayers. Results of both methods were in good agreement and followed the TRiP98 calculation. Therefore, we conclude that this 3D bio-phantom can be a suitable, accurate alternative tool for verifying the biological effect calculated by treatment planning systems, which could be applied to test novel treatment planning approaches involving multiple fields, multiple ion modalities, complex geometries, or unconventional optimization strategies.
Collapse
Affiliation(s)
- D A Kartini
- School of Physics, Suranaree University of Technology, 111 University Avenue, Muang, Nakhon Ratchasima 30000, Thailand. Thailand Center of Excellence in Physics, Ministry of Higher Education, Science, Research and Innovation, 328 Si Ayutthaya Road, Bangkok 10400, Thailand. Biophysics Department, GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstrasse 1, 64291 Darmstadt, Germany
| | | | | | | | | | | | | | | | | | | |
Collapse
|
7
|
Weigel A, Maehder K, Witt M, Löwe B. Psychotherapists' perspective on the treatment of patients with somatic symptom disorders. J Psychosom Res 2020; 138:110228. [PMID: 32896756 DOI: 10.1016/j.jpsychores.2020.110228] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 07/30/2020] [Accepted: 08/25/2020] [Indexed: 02/05/2023]
Abstract
OBJECTIVE Guidelines recommend psychotherapy in addition to primary care for patients with moderate to severe somatic symptom disorders. While general practitioners' experiences have been well studied, psychotherapists' experiences with this patient group and the explanatory models psychotherapists use in psychotherapy are unknown. METHODS Semi-structured qualitative interviews were conducted between April and July 2018 with 20 German licensed outpatient psychotherapists with either a medical or a psychological background, using the label "somatoform disorders". Interviews were analyzed applying thematic analysis. RESULTS Psychotherapists experienced management of affected patients as challenging and partly frustrating, mainly due to the difficult diagnostic process and the "somatic fixation" of some patients. Diagnostic labelling was considered a delicate issue, with some psychotherapists using the term "somatoform", while others preferred either "functional" or vague descriptions like "psychosomatic". The explanatory process was deemed essential for treatment, as was the adaptation of explanations to both a patient's biography and language. As main explanatory factors, psychotherapists referred to generic vulnerability factors, previous somatic illness and health care system influences. CONCLUSIONS Explanatory models used in psychotherapy are patient-centred, processual and constitute a major component of the psychotherapeutic process. However, this process might be impeded if patients are confronted with different diagnostic labels and explanatory models during their pathways through care.
Collapse
Affiliation(s)
- Angelika Weigel
- Department of Psychosomatic Medicine and Psychotherapy, University Medical Centre Hamburg-Eppendorf, Germany.
| | - Kerstin Maehder
- Department of Psychosomatic Medicine and Psychotherapy, University Medical Centre Hamburg-Eppendorf, Germany.
| | - Marie Witt
- Department of Psychosomatic Medicine and Psychotherapy, University Medical Centre Hamburg-Eppendorf, Germany
| | - Bernd Löwe
- Department of Psychosomatic Medicine and Psychotherapy, University Medical Centre Hamburg-Eppendorf, Germany.
| |
Collapse
|
8
|
Turco E, Witt M, Abert C, Bock-Bierbaum T, Su MY, Trapannone R, Sztacho M, Danieli A, Shi X, Zaffagnini G, Gamper A, Schuschnig M, Fracchiolla D, Bernklau D, Romanov J, Hartl M, Hurley JH, Daumke O, Martens S. How RB1CC1/FIP200 claws its way to autophagic engulfment of SQSTM1/p62-ubiquitin condensates. Autophagy 2019; 15:1475-1477. [PMID: 31066340 DOI: 10.1080/15548627.2019.1615306] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
Macroautophagy/autophagy mediates the degradation of ubiquitinated aggregated proteins within lysosomes in a process known as aggrephagy. The cargo receptor SQSTM1/p62 condenses aggregated proteins into larger structures and links them to the nascent autophagosomal membrane (phagophore). How the condensation reaction and autophagosome formation are coupled is unclear. We recently discovered that a region of SQSTM1 containing its LIR motif directly interacts with RB1CC1/FIP200, a protein acting at early stages of autophagosome formation. Determination of the structure of the C-terminal region of RB1CC1 revealed a claw-shaped domain. Using a structure-function approach, we show that the interaction of SQSTM1 with the RB1CC1 claw domain is crucial for the productive recruitment of the autophagy machinery to ubiquitin-positive condensates and their subsequent degradation by autophagy. We also found that concentrated Atg8-family proteins on the phagophore displace RB1CC1 from SQSTM1, suggesting an intrinsic directionality in the process of autophagosome formation. Ultimately, our study reveals how the interplay of SQSTM1 and RB1CC1 couples cargo condensation to autophagosome formation.
Collapse
Affiliation(s)
- Eleonora Turco
- a Department of Biochemistry and Cell Biology, Max F. Perutz Laboratories (MFPL) , University of Vienna, Vienna BioCenter , Vienna , Austria
| | - Marie Witt
- b Crystallography , Max-Delbrück-Center for Molecular Medicine , Berlin , Germany.,c Institute of Chemistry and Biochemistry , Freie Universität Berlin , Berlin , Germany
| | - Christine Abert
- a Department of Biochemistry and Cell Biology, Max F. Perutz Laboratories (MFPL) , University of Vienna, Vienna BioCenter , Vienna , Austria
| | - Tobias Bock-Bierbaum
- b Crystallography , Max-Delbrück-Center for Molecular Medicine , Berlin , Germany
| | - Ming-Yuan Su
- d Department of Molecular and Cell Biology and California Institute for Quantitative Biosciences , University of California , Berkeley , CA , USA.,e Molecular Biophysics and Integrated Bioimaging Division , Lawrence Berkeley National Laboratory , Berkeley , CA , USA
| | - Riccardo Trapannone
- a Department of Biochemistry and Cell Biology, Max F. Perutz Laboratories (MFPL) , University of Vienna, Vienna BioCenter , Vienna , Austria
| | - Martin Sztacho
- a Department of Biochemistry and Cell Biology, Max F. Perutz Laboratories (MFPL) , University of Vienna, Vienna BioCenter , Vienna , Austria
| | - Alberto Danieli
- a Department of Biochemistry and Cell Biology, Max F. Perutz Laboratories (MFPL) , University of Vienna, Vienna BioCenter , Vienna , Austria
| | - Xiaoshan Shi
- d Department of Molecular and Cell Biology and California Institute for Quantitative Biosciences , University of California , Berkeley , CA , USA
| | - Gabriele Zaffagnini
- a Department of Biochemistry and Cell Biology, Max F. Perutz Laboratories (MFPL) , University of Vienna, Vienna BioCenter , Vienna , Austria
| | - Annamaria Gamper
- a Department of Biochemistry and Cell Biology, Max F. Perutz Laboratories (MFPL) , University of Vienna, Vienna BioCenter , Vienna , Austria
| | - Martina Schuschnig
- a Department of Biochemistry and Cell Biology, Max F. Perutz Laboratories (MFPL) , University of Vienna, Vienna BioCenter , Vienna , Austria
| | - Dorotea Fracchiolla
- a Department of Biochemistry and Cell Biology, Max F. Perutz Laboratories (MFPL) , University of Vienna, Vienna BioCenter , Vienna , Austria
| | - Daniel Bernklau
- a Department of Biochemistry and Cell Biology, Max F. Perutz Laboratories (MFPL) , University of Vienna, Vienna BioCenter , Vienna , Austria
| | - Julia Romanov
- a Department of Biochemistry and Cell Biology, Max F. Perutz Laboratories (MFPL) , University of Vienna, Vienna BioCenter , Vienna , Austria
| | - Markus Hartl
- a Department of Biochemistry and Cell Biology, Max F. Perutz Laboratories (MFPL) , University of Vienna, Vienna BioCenter , Vienna , Austria
| | - James H Hurley
- d Department of Molecular and Cell Biology and California Institute for Quantitative Biosciences , University of California , Berkeley , CA , USA.,e Molecular Biophysics and Integrated Bioimaging Division , Lawrence Berkeley National Laboratory , Berkeley , CA , USA
| | - Oliver Daumke
- b Crystallography , Max-Delbrück-Center for Molecular Medicine , Berlin , Germany.,c Institute of Chemistry and Biochemistry , Freie Universität Berlin , Berlin , Germany
| | - Sascha Martens
- a Department of Biochemistry and Cell Biology, Max F. Perutz Laboratories (MFPL) , University of Vienna, Vienna BioCenter , Vienna , Austria
| |
Collapse
|
9
|
Daca-Roszak P, Swierniak M, Jaksik R, Tyszkiewicz T, Oczko-Wojciechowska M, Zebracka-Gala J, Jarzab B, Witt M, Zietkiewicz E. Transcriptomic population markers for human population discrimination. BMC Genet 2018; 19:54. [PMID: 30086702 PMCID: PMC6081795 DOI: 10.1186/s12863-018-0663-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 07/30/2018] [Indexed: 12/27/2022] Open
Abstract
Background Numerous studies have demonstrated significant differences in the expression level across continental human populations. Most of published results were performed on B-cell lines materials examined under specific laboratory conditions, without further validation in a primary biological material. The goal of our study was to identify mRNA markers characterized by a significant and stable difference in the gene expression profile in Caucasian and Chinese populations, both in the commercially available B-lymphocyte cell lines and in the primary samples of the peripheral blood. Results The preliminary selection of population-differentiating transcripts was based on Illumina expression microarray analysis of the representative group of ethnically-specified B-lymphocyte cell lines. Twenty genes with the inter-population difference in the mean expression characterized by the at least 1.5-fold change and FDR < 0.05 were identified. Subsequently, a two-step validation procedure was carried out. In the first step, a subset of selected population- differentiating transcripts was tested in the independent set of B-lymphocyte cell lines, using TLDA cards. Based on TLDA analysis, three transcripts representing Fch > 2 were chosen for validation. The differentiating status was confirmed for all of them: UTS2, UGT2B17 and SLC7A7. The mean expression of UTS2 was higher in CHB (25.8-fold change compared to CEU), while the expression of UGT2B17 and SLC7A7 was higher in CEU (3.2- and 2.2-fold change, respectively). In the next validation step, two transcripts were verified in the primary biological material. As an ultimate result of our study, two mRNA markers (UTS2 and UGT2B17) exhibiting population differences in the expression level in both B-cell line and in the blood were identified. Further statistical analysis confirmed the discriminatory potential of these two markers. Conclusions An inter-population differences on the level of gene expression were identified in both B-cell lines and peripheral blood samples. These findings may have a practical application in the field of forensic science. In particular, these transcripts, targeted by specific probes, may be used as population-specific targets in the efforts aiming to separate mixture of blood from individuals of different populations. Notwithstanding, these results have to be confirmed on extended population group. Electronic supplementary material The online version of this article (10.1186/s12863-018-0663-2) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- P Daca-Roszak
- Institute of Human Genetics, Polish Academy of Sciences, Strzeszynska 32, 60-479, Poznan, Poland
| | - M Swierniak
- Maria Sklodowska-Curie, Memorial Cancer Center and Institute of Oncology, Gliwice Branch, Gliwice, Poland.,Present address: Laboratory of Human Cancer Genetics, Center of New Technologies, CENT, University of Warsaw, Warsaw, Poland.,Genomic Medicine, Medical University of Warsaw, Warsaw, Poland
| | - R Jaksik
- Institute of Automatic Control, Silesian University of Technology, Gliwice, Poland
| | - T Tyszkiewicz
- Maria Sklodowska-Curie, Memorial Cancer Center and Institute of Oncology, Gliwice Branch, Gliwice, Poland
| | - M Oczko-Wojciechowska
- Maria Sklodowska-Curie, Memorial Cancer Center and Institute of Oncology, Gliwice Branch, Gliwice, Poland
| | - J Zebracka-Gala
- Maria Sklodowska-Curie, Memorial Cancer Center and Institute of Oncology, Gliwice Branch, Gliwice, Poland
| | - B Jarzab
- Maria Sklodowska-Curie, Memorial Cancer Center and Institute of Oncology, Gliwice Branch, Gliwice, Poland
| | - M Witt
- Institute of Human Genetics, Polish Academy of Sciences, Strzeszynska 32, 60-479, Poznan, Poland
| | - E Zietkiewicz
- Institute of Human Genetics, Polish Academy of Sciences, Strzeszynska 32, 60-479, Poznan, Poland.
| |
Collapse
|
10
|
Moog P, Eren O, Kossegg S, Valda K, Straube A, Grünke M, Schulze-Koops H, Witt M. Pupillary autonomic dysfunction in patients with ANCA-associated vasculitis. Clin Auton Res 2017; 27:385-392. [PMID: 28864843 DOI: 10.1007/s10286-017-0463-1] [Citation(s) in RCA: 2] [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: 05/16/2017] [Accepted: 08/23/2017] [Indexed: 12/30/2022]
Abstract
OBJECTIVE To assess autonomic function by infrared dynamic pupillometry in patients with ANCA-vasculitis (AAV) in correlation to autonomic symptoms, disease specific clinical parameters and cardiovascular reflex tests. METHODS Patients with AAV and healthy controls underwent pupillometry at rest and after sympathetic stimulation (cold pressor test). Three parasympathetic parameters (amplitude, relative amplitude, maximum constriction velocity) and one sympathetic parameter (late dilatation velocity) were assessed. Results were correlated with clinical parameters, symptoms of autonomic dysfunction (COMPASS31 questionnaire), heart rate variability during deep breathing test and blood pressure response to pain. RESULTS 23 patients and 18 age-matched controls were enrolled. Patients had a smaller amplitude (1.44 vs. 1.70 mm; p = 0.009) and a slower constriction velocity (4.15 vs. 4.71 mm/s; p = 0.028) at baseline and after sympathetic stimulation (1.47 vs. 1.81 mm, p = 0.001; 4.38 vs. 5.19 mm/s, p = 0.006, respectively). Relative amplitude was significantly smaller in patients after sympathetic stimulation (28.6 vs. 32.5%; p = 0.043), but not at baseline. There was no difference in sympathetic pupillary response between the groups. In patients, parasympathetic pupil response was correlated negatively with age and positively with parasympathetic cardiac response. After adjusting for age, no significant correlation was observed with clinical parameters. However, there was a trend towards a negative correlation with disease duration, vasculitis damage index and CRP. CONCLUSION Patients with AAV exhibit parasympathetic pupillary autonomic dysfunction. Although correlations were weak and not significant, pupillary autonomic dysfunction is rather linked to chronic damage than to active inflammation or symptoms of autonomic dysfunction.
Collapse
Affiliation(s)
- Philipp Moog
- Medizinische Klinik IV, Rheumaeinheit, Klinikum der Universität München, Munich, Germany. .,Abteilung für Nephrologie, Technische Universität München, Ismaninger Str. 22, 81675, Munich, Germany.
| | - O Eren
- Neurologische Klinik und Poliklinik, Klinikum der Universität München, Munich, Germany
| | - S Kossegg
- Medizinische Klinik IV, Rheumaeinheit, Klinikum der Universität München, Munich, Germany
| | - K Valda
- Medizinische Klinik IV, Rheumaeinheit, Klinikum der Universität München, Munich, Germany
| | - A Straube
- Neurologische Klinik und Poliklinik, Klinikum der Universität München, Munich, Germany
| | - M Grünke
- Medizinische Klinik IV, Rheumaeinheit, Klinikum der Universität München, Munich, Germany
| | - H Schulze-Koops
- Medizinische Klinik IV, Rheumaeinheit, Klinikum der Universität München, Munich, Germany
| | - M Witt
- Medizinische Klinik IV, Rheumaeinheit, Klinikum der Universität München, Munich, Germany
| |
Collapse
|
11
|
Proft F, Fleck M, Fiehn C, Schulze-Koops H, Witt M, Dörner T, Henes JC. Wirksamkeits- und Sicherheitsanalyse von Off-label-Biologikatherapien bei Patienten mit autoinflammatorischen Erkrankungen. Z Rheumatol 2017; 77:46-54. [DOI: 10.1007/s00393-017-0329-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
|
12
|
Henes JC, Schulze-Koops H, Witt M, Tony HP, Mueller F, Grunke M, Czihal M, Dörner T, Proft F. Off-label-Biologikatherapie bei Patienten mit Großgefäßvaskulitiden und/oder Polymyalgia rheumatica. Z Rheumatol 2017; 77:12-20. [DOI: 10.1007/s00393-017-0325-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
13
|
Witt M, Frielinghausen J, Mueller R, Mueller F, Proft F, Schulze-Koops H, Grunke M, Clevert DA. Evaluation of a Novel Semi-Automated Ultrasound System for the Detection of Synovitis: A Prospective Study involving 45 Patients with Rheumatoid Arthritis. Ultrasound Int Open 2016; 2:E117-E123. [PMID: 27921093 DOI: 10.1055/s-0042-115774] [Citation(s) in RCA: 2] [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: 04/17/2016] [Accepted: 08/04/2016] [Indexed: 10/21/2022] Open
Abstract
Background: Arthrosonography has proven to be more sensitive and reliable for the detection of synovitis than clinical examination, but a comprehensive examination of small joints is time-consuming. The automated breast volume scanner (ABVS) has been developed to allow automatic and reproducible series of consecutive B-mode pictures of the female breast. Objectives: To analyze the comparability of ABVS and conventional manual ultrasonography (mUS) for the detection of synovitis in hands and feet of patients with rheumatoid arthritis (RA). Methods: 45 patients with early and established active rheumatoid arthritis were recruited for this trial. All subjects were assessed clinically and by manual (Esaote MyLab70) and automated ultrasound (ACUSON S2000™ ABVS). The wrists, the metacarpophalangeal and proximal interphalangeal joints of the hands and the metatarsophalangeal joints of the feet were examined. Results: A total of 2 340 joint aspects were examined with both methods. ABVS detected 291 grade 1, 124 grade 2, 100 grade 3 cases of synovitis (515 in total) compared to 267, 180 and 145 cases of synovitis (592 in total) with mUS. 242 erosions and 52 cases of tenosynovitis were found by ABVS compared to 244 erosions and 99 cases of tenosynovitis found by mUS. Kappa coefficients for the agreement between both methods ranged from 0.51 in PIP joints to 0.71 in MCP joints. The correlations with clinical parameters as well as interrater agreements were comparable for both ultrasound methods. Conclusion: Based on the results, ABVS seems to be a promising technology for the comprehensive and time-saving assessment of synovitis in RA.
Collapse
Affiliation(s)
- M Witt
- Division of Rheumatology, Med. Klinik und Poliklinik IV, University of Munich, Munich, Germany
| | - J Frielinghausen
- Division of Rheumatology, Med. Klinik und Poliklinik IV, University of Munich, Munich, Germany
| | - R Mueller
- Division of Rheumatology, Kantonsspital St. Gallen, St. Gallen, Switzerland
| | - F Mueller
- Division of Rheumatology, Med. Klinik und Poliklinik IV, University of Munich, Munich, Germany
| | - F Proft
- Division of Rheumatology, Med. Klinik und Poliklinik IV, University of Munich, Munich, Germany
| | - H Schulze-Koops
- Division of Rheumatology, Med. Klinik und Poliklinik IV, University of Munich, Munich, Germany
| | - M Grunke
- Division of Rheumatology, Med. Klinik und Poliklinik IV, University of Munich, Munich, Germany
| | - D-A Clevert
- Department of Clinical Radiology, University of Munich, Munich, Germany
| |
Collapse
|
14
|
Affiliation(s)
| | | | | | - M Witt
- St Thomas' Hospital, London SE1
| |
Collapse
|
15
|
Baraliakos X, Heldmann F, van den Bosch F, Burmester G, Gaston H, van der Horst-Bruinsma IE, Krause A, Schmidt R, Schneider M, Sieper J, Andermann B, van Tubergen A, Witt M, Braun J. Long-term efficiency of infliximab in patients with ankylosing spondylitis: real life data confirm the potential for dose reduction. RMD Open 2016; 2:e000272. [PMID: 27493791 PMCID: PMC4964174 DOI: 10.1136/rmdopen-2016-000272] [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] [Received: 02/27/2016] [Revised: 04/24/2016] [Accepted: 05/03/2016] [Indexed: 01/15/2023] Open
Abstract
Objective To analyse the treatment outcome of patients with ankylosing spondylitis (AS) in the European AS infliximab cohort (EASIC) study after a total period of 8 years with specific focus on dosage and the duration of intervals between infliximab infusions. Methods EASIC included patients with AS who had received infliximab for 2 years as part of the ASSERT trial. After that period, rheumatologists were free to change the dose or the intervals of infliximab. Clinical data were status at baseline, end of ASSERT and for a total of 8 years of follow-up. Results Of the initially 71 patients with AS from EASIC, 55 patients (77.5%) had completed the 8th year of anti-tumour necrosis factor (TNF) treatment. Of those, 48 patients (87.3%) still continued on infliximab. The mean infusion interval increased slightly from 6 to 7.1±1.5 weeks, while 45.8% patients had increased the intervals up to a maximum of 12 weeks. The mean infliximab dose remained stable over time, with a minimum of 3.1 mg/kg and a maximum of 6.4 mg/kg. In patients receiving <5 mg/kg infliximab, the mean infusion interval increased to 7.0±1.2 weeks. In total, the mean cumulative dose per patient and per year decreased from 3566.30 to 2973.60 mg. Conclusions We could observe that over a follow-up of 8 years of treatment with infliximab, >85% patients still remained on the same treatment, without any major safety events. Furthermore, both the infusion intervals and also the mean infliximab dose were modestly reduced in ≥70% of the patients without the loss of clinical efficiency.
Collapse
Affiliation(s)
| | - F Heldmann
- Zeisigwaldkliniken Bethanien , Chemnitz , Germany
| | | | - G Burmester
- Charité University Medicine Berlin , Berlin , Germany
| | - H Gaston
- University of Cambridge , Cambridge , UK
| | | | - A Krause
- Immanuel Krankenhaus , Berlin , Germany
| | - R Schmidt
- Medical University Hannover , Germany
| | | | - J Sieper
- Charité Campus Benjamin Franklin , Berlin , Germany
| | - B Andermann
- Private rheumatology practice , Berlin , Germany
| | | | - M Witt
- University of Munich , Germany
| | - J Braun
- Rheumazentrum Ruhrgebiet , Herne , Germany
| |
Collapse
|
16
|
Henkemeier U, Alten R, Bannert B, Baraliakos X, Behrens F, Heldmann F, Kiltz U, Köhm M, König R, Leipe J, Müller-Ladner U, Rech J, Riechers E, Rubbert-Roth A, Schmidt RE, Schulze-Koops H, Specker C, Tausche AK, Wassenberg S, Witt M, Witte T, Zernicke J, Burkhardt H. [Do we still need clinical studies in rheumatology?]. Z Rheumatol 2015; 75:4-10. [PMID: 26680367 DOI: 10.1007/s00393-015-1687-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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] [Indexed: 11/26/2022]
Abstract
Despite a large number of approved therapies demonstrating efficacy in the treatment of rheumatic diseases, only 60-85 % of patients with the indications for rheumatoid arthritis are adequately treated in Germany. Additionally, approved therapies for other immune-mediated diseases are often entirely lacking, indicating the great medical need for the development of new innovative therapies in this specialized field. The development of new drugs is expensive due to the high costs of conducting clinical trials in all phases of development up to obtaining approval; therefore, pharmaceutical companies are looking for ways to save costs in the particular developmental stages. Although the classical regions for drug development (i.e. western Europe, the USA and Japan) offer both a high level of data quality and a good infrastructure to conduct clinical trials due to high standards of education and quality, clinical trials are expensive in these regions. Beside high costs, the comparatively low recruitment rates in these regions are one of the main reasons for the shifting of drug developmental stages from classical regions to eastern European, Latin American and Asian countries, which provide services for drug development and high recruitment rates for comparatively less money. However, there are many strong arguments for the participation of regions in western Europe, especially German sites in clinical trials. In this article these arguments are discussed and possible solutions and strategies for conducting and compensation of study centers in Germany for clinical trials in the field of rheumatology are provided.
Collapse
Affiliation(s)
- U Henkemeier
- Centrum für innovative Diagnostik und Therapie Rheumatologie/Immunologie, Sandhöfer Allee 6, 60528, Frankfurt am Main, Deutschland.
| | - R Alten
- Schlosspark-Klinik, Berlin, Deutschland
| | - B Bannert
- Medizinische Universitätsklinik Freiburg, Freiburg, Deutschland
| | | | - F Behrens
- Centrum für innovative Diagnostik und Therapie Rheumatologie/Immunologie, Sandhöfer Allee 6, 60528, Frankfurt am Main, Deutschland
| | - F Heldmann
- Zeisigwaldkliniken Bethanien, Chemnitz, Deutschland
| | - U Kiltz
- Rheumazentrum Ruhrgebiet, Herne, Deutschland
| | - M Köhm
- Centrum für innovative Diagnostik und Therapie Rheumatologie/Immunologie, Sandhöfer Allee 6, 60528, Frankfurt am Main, Deutschland
| | - R König
- Kerckhoff-Klinik, Bad Nauheim, Deutschland
| | - J Leipe
- Klinikum der Universität München, München, Deutschland
| | | | - J Rech
- Universität Erlangen-Nürnberg, Erlangen, Deutschland
| | - E Riechers
- Medizinische Hochschule Hannover, Hannover, Deutschland
| | | | - R E Schmidt
- Medizinische Hochschule Hannover, Hannover, Deutschland
| | | | - C Specker
- St. Josef Krankenhaus Essen-Werden GmbH, Essen, Deutschland
| | - A-K Tausche
- Universitätsklinikum Carl Gustav Carus, Dresden, Deutschland
| | | | - M Witt
- Klinikum der Universität München, München, Deutschland
| | - T Witte
- Medizinische Hochschule Hannover, Hannover, Deutschland
| | - J Zernicke
- Charité-Universitätsmedizin, Berlin, Deutschland
| | - H Burkhardt
- Centrum für innovative Diagnostik und Therapie Rheumatologie/Immunologie, Sandhöfer Allee 6, 60528, Frankfurt am Main, Deutschland
| |
Collapse
|
17
|
Brachat A, Feist E, Behrens F, Blank N, Nirmala NR, Specker C, Witt M, Zernicke J, Martini A, Junge G. Genes responding to Canakinumab therapy in SJIA are -inversely - disregulated in adult onset Still's disease. Pediatr Rheumatol Online J 2015. [PMCID: PMC4597022 DOI: 10.1186/1546-0096-13-s1-p4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
|
18
|
Daca-Roszak P, Pfeifer A, Żebracka-Gala J, Jarząb B, Witt M, Ziętkiewicz E. EurEAs_Gplex--A new SNaPshot assay for continental population discrimination and gender identification. Forensic Sci Int Genet 2015; 20:89-100. [PMID: 26520215 DOI: 10.1016/j.fsigen.2015.10.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 10/15/2015] [Indexed: 12/21/2022]
Abstract
Assays that allow analysis of the biogeographic origin of biological samples in a standard forensic laboratory have to target a small number of highly differentiating markers. Such markers should be easy to multiplex and the assay must perform well in the degraded and scarce biological material. SNPs localized in the genome regions, which in the past were subjected to differential selective pressure in various populations, are the most widely used markers in the studies of biogeographic affiliation. SNPs reflecting biogeographic differences not related to any phenotypic traits are not sufficiently explored. The goal of our study was to identify a small set of SNPs not related to any known pigmentation/phenotype-specific genes, which would allow efficient discrimination between populations of Europe and East Asia. The selection of SNPs was based on the comparative analysis of representative European and Chinese/Japanese samples (B-lymphocyte cell lines), genotyped using the Infinium HumanOmniExpressExome microarray (Illumina). The classifier, consisting of 24 unlinked SNPs (24-SNP classifier), was selected. The performance of a 14-SNP subset of this classifier (14-SNP subclassifier) was tested using genotype data from several populations. The 14-SNP subclassifier differentiated East Asians, Europeans and Africans with ∼100% accuracy; Palestinians, representative of the Middle East, clustered with Europeans, while Amerindians and Pakistani were placed between East Asian and European populations. Based on these results, we have developed a SNaPshot assay (EurEAs_Gplex) for genotyping SNPs from the 14-SNP subclassifier, combined with an additional marker for gender identification. Forensic utility of the EurEAs_Gplex was verified using degraded and low quantity DNA samples. The performance of the EurEAs_Gplex was satisfactory when using degraded DNA; tests using low quantity DNA samples revealed a previously not described source of genotyping errors, potentially important for any SNaPshot-based assays.
Collapse
Affiliation(s)
- P Daca-Roszak
- Institute of Human Genetics, Polish Academy of Sciences, Strzeszynska 32, 60-479 Poznan, Poland
| | - A Pfeifer
- Maria Sklodowska-Curie Memorial Cancer Centre and Institute of Oncology, Gliwice Branch, Poland; Faculty of Automatic Control, Electronics and Computer Science, Silesian University of Technology, Gliwice, Poland
| | - J Żebracka-Gala
- Maria Sklodowska-Curie Memorial Cancer Centre and Institute of Oncology, Gliwice Branch, Poland
| | - B Jarząb
- Maria Sklodowska-Curie Memorial Cancer Centre and Institute of Oncology, Gliwice Branch, Poland
| | - M Witt
- Institute of Human Genetics, Polish Academy of Sciences, Strzeszynska 32, 60-479 Poznan, Poland; International Institute of Molecular and Cell Biology, Warsaw, Poland
| | - E Ziętkiewicz
- Institute of Human Genetics, Polish Academy of Sciences, Strzeszynska 32, 60-479 Poznan, Poland.
| |
Collapse
|
19
|
|
20
|
Moog P, Witt M, Eren O, Rauschel V, Kossegg S, Straube A, Grünke M, Schulze-Koops H. FRI0274 Assessment of Autonomic Dysfunction in Anca-Associated Vasculitis: A Prospective Study of 24 Patients. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.4820] [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: 11/04/2022]
|
21
|
Baraliakos X, Heldmann F, van den Bosch F, Burmester GR, Gaston H, van der Horst-Bruinsma I, Andermann B, Krause A, Schmidt R, Schneider M, Sieper J, Witt M, Braun J. THU0234 Long-Term Efficacy of Infliximab in Patients with Ankylosing Spondylitis – Real Life Data Confirm the Potential for Dose Reduction by Stretching Infusion Intervals. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.6459] [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: 11/03/2022]
|
22
|
Witt M, Valda K, Moog P, Eren O, Schulze-Koops H, Grunke M. AB1033 Evidence for Autonomic Dysfunction in Familial Mediterranean Fever (FMF): Results from a Prospective Controlled Study Including the Compass-31 Questionnaire. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.5750] [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: 11/04/2022]
|
23
|
Brachat A, Feist E, Behrens F, Blank N, Nanguneri N, Specker C, Witt M, Zernicke J, Martini A, Junge G. AB0001 Still's Disease – Similar Gene Expression Profiles Demonstrate Presence of an IL-1 Response Signature in SJIA and AOSD. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.1589] [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: 11/03/2022]
|
24
|
Grünke M, Meier J, Witt M, Proft F, Schulze-Koops H. SAPHO-Syndrom: Ein Überblick. AKTUEL RHEUMATOL 2015. [DOI: 10.1055/s-0035-1545283] [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: 10/23/2022]
Affiliation(s)
- M. Grünke
- Rheumaeinheit, Medizinische Poliklinik, Universitätsklinikum München – Campus Innenstadt, München
| | - J. Meier
- Rheumaeinheit, Medizinische Poliklinik, Universitätsklinikum München – Campus Innenstadt, München
| | - M. Witt
- Rheumaeinheit, Medizinische Poliklinik, Universitätsklinikum München – Campus Innenstadt, München
| | - F. Proft
- Rheumaeinheit, Medizinische Poliklinik, Universitätsklinikum München – Campus Innenstadt, München
| | - H. Schulze-Koops
- Rheumaeinheit, Medizinische Poliklinik, Universitätsklinikum München – Campus Innenstadt, München
| |
Collapse
|
25
|
Popp KH, Kosilek RP, Stalla GK, Stieg M, Berr C, Reincke M, Witt M, Würtz RP, Schneider HJ. Face classification technology as a new diagnostic tool for Cushing's syndrome – preliminary results. Exp Clin Endocrinol Diabetes 2015. [DOI: 10.1055/s-0035-1549083] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
26
|
Proft F, Steinbach S, Dechant C, Witt M, Reindl C, Schulz S, Vielhauer V, Hilge R, Laubender RP, Manger K, Nüsslein H, Wendler J, Schuch F, Schulze-Koops H, Grunke M. Gustatory and olfactory function in patients with granulomatosis with polyangiitis (Wegener's). Scand J Rheumatol 2014; 43:512-8. [PMID: 25204208 DOI: 10.3109/03009742.2014.915056] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
OBJECTIVES Recent findings suggest that autoimmune disorders predispose to a diminished capacity to taste and smell. This has been shown for patients with systemic lupus erythematosus as well as for patients with rheumatoid arthritis (RA). Granulomatosis with polyangiitis (GPA), with its particular manifestations in the upper respiratory tract, may therefore have an even higher impact on these senses. The aims of this study were to evaluate the gustatory and olfactory function in patients with GPA, to compare them to sex- and age-matched healthy controls, and to correlate these findings with their GPA disease severity. METHOD Patients with established GPA were analysed by standardized assessments for gustatory and olfactory functions and examined for disease activity, stage of disease, and treatment. RESULTS Forty-four GPA patients were tested for their chemosensory functions. Compared to age- and sex-matched healthy controls, GPA patients showed significantly decreased olfactory scores along with diminished scores for their gustatory functions. The diminished sense of smell in GPA patients correlated significantly with elevated C-reactive protein (CRP) values whereas the gustatory impairment correlated with the duration and extent of the disease. CONCLUSIONS Our results indicate that olfactory and gustatory functions are significantly decreased in GPA. As the olfactory function of these patients was comparable to patients with RA, chemosensory impairment may not simply be a consequence of the involvement of the upper respiratory tract, but rather a common complication of systemic autoimmune diseases.
Collapse
Affiliation(s)
- F Proft
- Division of Rheumatology and Clinical Immunology, Medical Clinic and Polyclinic IV, Ludwig-Maximilians-University Munich , Germany
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Roesky HW, Raubold T, Noltemeyer M, Witt M, Bohra R. Reaktion von N-Trimethylsilyl-N′(N″ -trimethylsilylammodiphenylphosphoranylidenimino) sulfamid mit Wolframoxitetrachlorid und die Struktur von (Cl3WNPPh2N)2 Reaction of N-Trimethylsilyl-N′(N″ -trimethylsilylaminodiphenylphosphoranylidene)sulfamide with Tungstenoxitetrachloride and the Structure of (Cl3WNPPh2N)2. Zeitschrift für Naturforschung B 2014. [DOI: 10.1515/znb-1992-0203] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
1
The reaction of ClSO2N = PPh2Cl () with NH3 yields H2NSO2N = PPh2NH2 (2).This compound is converted to Me3Si(H)NSO2N = PPh2N(H)SiMe3 (3) by Me3SiNMe2. 3 reacts with WOCl4 under elimination of (Me3Si)2O and ClSO2NH2 to yield the eight-membered ring system (Cl3WNPPh2N)2 (4).The molecular structure of 4 was investigated by an X-ray structure analysis.
Collapse
Affiliation(s)
- H. W. Roesky
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstraße 4, D-W -3400 Göttingen
| | - T. Raubold
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstraße 4, D-W -3400 Göttingen
| | - M. Noltemeyer
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstraße 4, D-W -3400 Göttingen
| | - M. Witt
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstraße 4, D-W -3400 Göttingen
| | - R. Bohra
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstraße 4, D-W -3400 Göttingen
| |
Collapse
|
28
|
Witt M, Frielinghausen J, Clevert D, Leipe J, Schulze-koops H, Mueller R, Grünke M. AB0990 Automated Ultrasound for the Detection of Synovitis in the Feet of Patients with Rheumatoid Arthritis (RA). Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.3742] [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: 11/03/2022]
|
29
|
Witt M, Müller F, Leipe J, Proft F, Neumann C, Schulze-Koops H, Grunke M. SAT0201 The Relevance of Flexor Tendon Tenosynovitis to Small Joint Tenderness and Swelling: Data from A Prospective Early RA Cohort. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.3795] [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: 11/03/2022]
|
30
|
Witt M, Grunke M, Proft F, Baeuerle M, Aringer M, Burmester G, Chehab G, Fiehn C, Fischer-Betz R, Fleck M, Freivogel K, Haubitz M, Kötter I, Lovric S, Metzler C, Rubberth-Roth A, Schwarting A, Specker C, Tony HP, Unger L, Wassenberg S, Dörner T, Schulze-Koops H. Clinical outcomes and safety of rituximab treatment for patients with systemic lupus erythematosus (SLE) - results from a nationwide cohort in Germany (GRAID). Lupus 2014; 22:1142-9. [PMID: 24057058 DOI: 10.1177/0961203313503912] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
OBJECTIVE The objective of this article is to evaluate the safety and clinical outcome of rituximab treatment in systemic lupus erythematosus (SLE) patients refractory to standard of care therapy in a real-life setting in Germany. METHODS The GRAID registry included patients with different autoimmune diseases who were given off-label treatment with rituximab. Data on safety and clinical response were collected retrospectively. In SLE patients, clinical parameters included tender and swollen joint counts, fatigue, myalgia, general wellbeing, Raynaud's and the SLEDAI index. Laboratory tests included dsDNA antibody titres, complement factors, hematologic parameters and proteinuria. Finally, the investigators rated their patients as non-, partial or complete responders based on clinical grounds. RESULTS Data from 85 SLE patients were collected, 69 female and 16 male, with a mean disease duration of 9.8 years. The mean follow-up period was 9.6 ± 7.4 months, resulting in 66.8 patient years of observation. A complete response was reported in 37 patients (46.8%), partial response in 27 (34.2%), no response in 15 (19.0%). On average, major clinical as well as laboratory efficacy parameters improved substantially, with the SLEDAI decreasing significantly from 12.2 to 3.3 points. Concerning safety, one infusion reaction leading to discontinuation of treatment occurred. Infections were reported with a rate of 19.5 (including six severe infections) per 100 patient years. CONCLUSION With the restrictions of a retrospective data collection, the results of this study confirm data of other registries, which suggest a favourable benefit-risk ratio of rituximab in patients with treatment-refractory SLE.
Collapse
Affiliation(s)
- M Witt
- 1Division of Rheumatology, Medizinische Klinik und Poliklinik IV, University Hospital Munich, Germany
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
31
|
Plautz T, Bashkirov V, Feng V, Hurley F, Johnson R, Leary C, Macafee S, Plumb A, Rykalin V, Sadrozinski HW, Schubert K, Schulte R, Schultze B, Steinberg D, Witt M, Zatserklyaniy A. 200 MeV proton radiography studies with a hand phantom using a prototype proton CT scanner. IEEE Trans Med Imaging 2014; 33:875-81. [PMID: 24710156 PMCID: PMC3982192 DOI: 10.1109/tmi.2013.2297278] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Proton radiography has applications in patient alignment and verification procedures for proton beam radiation therapy. In this paper, we report an experiment which used 200 MeV protons to generate proton energy-loss and scattering radiographs of a hand phantom. The experiment used the first-generation proton computed tomography (CT) scanner prototype, which was installed on the research beam line of the clinical proton synchrotron at Loma Linda University Medical Center. It was found that while both radiographs displayed anatomical details of the hand phantom, the energy-loss radiograph had a noticeably higher resolution. Nonetheless, scattering radiography may yield more contrast between soft and bone tissue than energy-loss radiography, however, this requires further study. This study contributes to the optimization of the performance of the next-generation of clinical proton CT scanners. Furthermore, it demonstrates the potential of proton imaging (proton radiography and CT), which is now within reach of becoming available as a new, potentially low-dose medical imaging modality.
Collapse
Affiliation(s)
- Tia Plautz
- Santa Cruz Institute for Particle Physics, University of California Santa Cruz, Santa Cruz, CA 95064 USA
| | - V. Bashkirov
- Loma Linda University Medical Center, Loma Linda, CA 92354 USA
| | - V. Feng
- Santa Cruz Institute for Particle Physics, University of California Santa Cruz, Santa Cruz, CA 95064 USA
| | - F. Hurley
- Loma Linda University Medical Center, Loma Linda, CA 92354 USA
| | - R.P. Johnson
- Santa Cruz Institute for Particle Physics, University of California Santa Cruz, Santa Cruz, CA 95064 USA
| | - C. Leary
- Santa Cruz Institute for Particle Physics, University of California Santa Cruz, Santa Cruz, CA 95064 USA
| | - S. Macafee
- Santa Cruz Institute for Particle Physics, University of California Santa Cruz, Santa Cruz, CA 95064 USA
| | - A. Plumb
- Santa Cruz Institute for Particle Physics, University of California Santa Cruz, Santa Cruz, CA 95064 USA
| | - V. Rykalin
- Northern Illinois University, Department of Physics, DeKalb, IL 60115
| | - H.F.-W. Sadrozinski
- Santa Cruz Institute for Particle Physics, University of California Santa Cruz, Santa Cruz, CA 95064 USA
| | - K. Schubert
- CSU San Bernardino, San Bernardino, CA 92407 USA
| | - R. Schulte
- Loma Linda University Medical Center, Loma Linda, CA 92354 USA
| | - B. Schultze
- CSU San Bernardino, San Bernardino, CA 92407 USA
| | - D. Steinberg
- Santa Cruz Institute for Particle Physics, University of California Santa Cruz, Santa Cruz, CA 95064 USA
| | - M. Witt
- CSU San Bernardino, San Bernardino, CA 92407 USA
| | - A. Zatserklyaniy
- Santa Cruz Institute for Particle Physics, University of California Santa Cruz, Santa Cruz, CA 95064 USA
| |
Collapse
|
32
|
Chaudhary A, Bair R, Bair E, Partouche J, Witt M, Villaflor V, Cohen E, Seiwert T, Vokes E, Haraf D. Mandibular Osteoradionecrosis After Chemoradiation Therapy for Locoregionally Advanced Head-and-Neck Cancer: A Prospective Study of the Dose–Effect Relationship in Accelerated Fractionation by Concomitant Boost With Cisplatin and Cetuximab From the EPIC Trial. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2013.11.056] [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]
|
33
|
Hüttenrauch P, Witt M, Wolff D, Bosold S, Engenhart-Cabillic R, Sparenberg J, Vorwerk H, Zink K. Target volume coverage and dose to organs at risk in prostate cancer patients. Dose calculation on daily cone-beam CT data sets. Strahlenther Onkol 2014; 190:310-6. [PMID: 24424625 DOI: 10.1007/s00066-013-0483-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Accepted: 10/16/2013] [Indexed: 11/24/2022]
Abstract
PURPOSE On the basis of correct Hounsfield unit to electron density calibration, cone-beam computed tomography (CBCT) data provide the opportunity for retrospective dose recalculation in the patient. Therefore, the consequences of translational positioning corrections and of morphological changes in the patient anatomy can be quantified for prostate cancer patients. MATERIALS AND METHODS The organs at risk were newly contoured on the CBCT data sets of 7 patients so as to evaluate the actual applied dose. The daily dose to the planning target volume (PTV) was recalculated with and without the translation data, which result from the real patient repositioning. RESULTS A CBCT-based dose recalculation with uncertainties less than 3 % is possible. The deviations between the planning CT and the CBCT without the translational positioning correction vector show an average dose difference of - 8 % inside the PTV. An inverse proportional relation between the mean bladder dose and the actual volume of the bladder could be established. The daily applied dose to the rectum is about 1-54 % higher than predicted by the planning CT. CONCLUSION A dose calculation based on CBCT data is possible. The daily positioning correction of the patient is necessary to avoid an underdosage in the PTV. The new contouring of the organs at risk - the bladder and rectum - allows a better appraisal to be made of the total applied dose to these organs.
Collapse
Affiliation(s)
- P Hüttenrauch
- Klinik für Strahlentherapie, Universitätsklinikum Gießen-Marburg GmbH, Klinikstr. 33, 35392, Gießen, Germany,
| | | | | | | | | | | | | | | |
Collapse
|
34
|
Bair R, Chaudhary A, Bair E, Partouche J, Witt M, Villaflor V, Cohen E, Seiwert T, Vokes E, Haraf D. Dysphagia and Aspiration After Chemoradiation Therapy for Locoregionally-Advanced Head-and-Neck Cancer: A Prospective Study of the Dose–Effect Relationship in Accelerated Fractionation by Concomitant Boost With Cisplatin and Cetuximab From the EPIC Trial. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.366] [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: 10/26/2022]
|
35
|
Gaedke C, Witt M, Koene M, Berens von Rautenfeld D, Stadler P. Lymph flow determination in the equine hindlimb: Lymphoscintigraphic function studies. EQUINE VET EDUC 2013. [DOI: 10.1111/eve.12058] [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: 11/26/2022]
Affiliation(s)
- C. Gaedke
- Equine Clinic; University of Veterinary Medicine Hannover; Germany
| | - M. Witt
- Equine Clinic; University of Veterinary Medicine Hannover; Germany
| | | | | | - P. Stadler
- Equine Clinic; University of Veterinary Medicine Hannover; Germany
| |
Collapse
|
36
|
Hovakimyan M, Maass F, Petersen J, Holzmann C, Witt M, Lukas J, Frech MJ, Hübner R, Rolfs A, Wree A. Combined therapy with cyclodextrin/allopregnanolone and miglustat improves motor but not cognitive functions in Niemann-Pick Type C1 mice. Neuroscience 2013; 252:201-11. [PMID: 23948640 DOI: 10.1016/j.neuroscience.2013.08.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [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: 05/22/2013] [Revised: 07/31/2013] [Accepted: 08/01/2013] [Indexed: 12/21/2022]
Abstract
Niemann-Pick Type C1 (NPC1) is an autosomal recessive disorder characterized by the accumulation of cholesterol and glycosphingolipids. Combination-treatment utilizing cyclodextrin, allopregnanolone and miglustat (CYCLO/ALLO/miglustat) can ameliorate NPC1 disease in a mutant mouse model. The present study was designed to add behavioral analysis in NPC1 mutant mice upon CYCLO/ALLO/miglustat therapy. NPC1 mutant (BALB/cJ NPC1NIH) and control mice were used. For the combination treatment mice were injected with CYCLO/ALLO weekly, starting at P7. The miglustat injection was performed daily from P10 till P23. Starting at P23, miglustat was added to the powdered chow. For the sham treatment of control and mutant mice the same schedule was used with 0.9% NaCl injection. Locomotor activity was assessed in open field, elevated plus maze and accelerod tests. For assessment of spatial learning and memory the Morris water maze test was conducted. Electron microscopy has been performed to support the behavioral data. The sham-treated mutant mice exhibited motor impairments in all performed tests. In the water maze the sham-treated mutants exhibited impairment in remembering the location of the hidden platform. CYCLO/ALLO/miglustat treatment positively influenced motor dysfunction: total distance and number of visits significantly increased, and accelerod performance improved. The spatial learning, however, did not benefit from therapy. At the morphological level, an excessive accumulation of electron-dense material was seen in the cerebellar Purkinje cells of mutant mice. A regression of these autophagosomal inclusions was seen upon therapy. CYCLO/ALLO/miglustat therapy ameliorates motor but not cognitive deficits in NPC1 mutant mice, suggesting unequal vulnerability of different brain areas to the treatment.
Collapse
Affiliation(s)
- M Hovakimyan
- Institute of Anatomy, University of Rostock, Gertrudenstrasse 9, D-18057 Rostock, Germany.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Nigg AP, Malchus AM, Gruenke M, Witt M, Prinz J, Schulze-Koops H. SAT0277 Clinical Response in Early Psoriatic Arthritis may be Predicted by Rapid Reduction of a Semiquantitative Ultrasound Synovitis Score. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.2002] [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: 11/04/2022]
|
38
|
Reindl C, Tschernych A, Witt M, Nigg A, Laubender R, Schulze-Koops H, Grunke M. FRI0070 Evaluation of a patient reported outcome (PRO) based tool for the assessment of single joint intraarticular glucocorticosteroid injection. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.2527] [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: 11/04/2022]
|
39
|
Nigg A, Malchus A, Grünke M, Witt M, Prinz J, Schulze-Koops H. SAT0294 Monitoring disease activity in early psoriatic arthritis with ultrasound - comparison of clinical responders and nonresponders. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.3241] [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: 11/04/2022]
|
40
|
Witt M, Müller F, Nigg A, Reindl C, Schulze-Koops H, Grunke M. AB0738 Concordance of greyscale and powerdoppler modes in ultrasound assessment of ra: significantly better performance of the dorsal versus palmar approach to mcp and pip joints. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.3060] [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: 11/04/2022]
|
41
|
Stein N, Witt M, Baeuerle M, Schulze-Koops H, Gruenke M. THU0400 Inhibition of IL-6 signalling: A novel therapeutic approach for familial mediterranean fever. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.2365] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
42
|
Witt M, Mueller F, Nigg A, Reindl C, Schulze-Koops H, Gruenke M. AB1285 Ultrasound of MCP- and PIP-joints in rheumatoid arthritis: Increased value of the dorsal approach compared to the volar approach. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.1281] [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: 11/04/2022]
|
43
|
Witt M, Meier J, Proft F, Schulze-Koops H, Grunke M. SAT0535 Diagnosis, Disease Burden and Disease Manifestations of the Sapho Syndrome in Germany: Results from a Nationwide Patient Survey. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.2259] [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: 11/03/2022]
|
44
|
Krug J, Laßberg CV, Knoll K, Kerner S, Witt M. Bewegungsregulation bei schnellen Drehbewegungen im Sport – ein methodischer Ansatz. KLIN NEUROPHYSIOL 2013. [DOI: 10.1055/s-0033-1337174] [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: 10/27/2022]
|
45
|
Szczepaniak M, Loges NT, Olbrich H, Witt M, Omran H. Targeted testing for DNAI1 hot spot-mutation utilizing immunofluorescence microscopy findings. Cilia 2012. [PMCID: PMC3555735 DOI: 10.1186/2046-2530-1-s1-p104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
46
|
Golden D, Witt M, Rudra S, Nwizu T, Cohen E, Blair E, Stenson K, Vokes E, Haraf D. Outcomes of Induction Chemotherapy and Concurrent Chemoradiation for Nasopharyngeal Carcinoma. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
47
|
Witt M, Lockhart J. 113 Survivorship After Radiation to the Oral Cavity – Strategies to Promote Adherence to Dental Preservation Recommendations. Eur J Oncol Nurs 2012. [DOI: 10.1016/s1462-3889(12)70125-4] [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]
|
48
|
|
49
|
Smitka M, Puschmann S, Buschhueter D, Gerber J, Witt M, Honeycutt N, Abolmaali N, Hummel T. Is there a correlation between hippocampus and amygdala volume and olfactory function in healthy subjects? Neuroimage 2012; 59:1052-7. [DOI: 10.1016/j.neuroimage.2011.09.024] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2011] [Revised: 08/11/2011] [Accepted: 09/13/2011] [Indexed: 01/18/2023] Open
|
50
|
Hummel T, Schultz S, Witt M, Hatt H. Electrical responses to chemosensory stimulation recorded from the vomeronasal duct and the respiratory epithelium in humans. Int J Psychophysiol 2011; 81:116-20. [PMID: 21619899 DOI: 10.1016/j.ijpsycho.2011.05.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2010] [Revised: 04/15/2011] [Accepted: 05/10/2011] [Indexed: 11/18/2022]
Abstract
The physiological significance of the human vomeronasal duct (VND) is still unclear. The aim of the present study was to investigate the question whether mucosal responses obtained from the VND are different from those obtained from the respiratory epithelium. There were 15 healthy subjects (8 male, 7 female; age range 19-45 years; 14 normosmic subjects, 1 anosmic subject). All subjects participated in two sessions whereby the first session was used to acquaint them with the experimental conditions. For chemical stimulation, an olfactometer was used which delivered chemical stimulants without altering mechanical or thermal conditions at the stimulated nasal mucosa. For stimulation we used substances previously reported to produce vomeronasal activation ("estra"=estra-1,3,5(10),16-tetraen-3ol and "andro"=androsta-4,16-dien-3-on); in addition, gaseous CO(2) was used as a non-odorous, relatively specific stimulant of the trigeminal nerve. Placement of electrodes either in the VND or on the respiratory epithelium was performed under endoscopical guidance. Subjects rated the overall intensity of the stimuli, the strength of trigeminally mediated sensations, and the hedonic tone of the stimulants. Responses could not be recorded from all subjects. For the remaining 7 subjects, intensity was strongest for CO(2) stimuli (p<0.001), whereas no significant difference was observed between "andro" and "estra" (p=0.33). All three stimulants produced responses at the respiratory epithelium with largest responses obtained after stimulation with CO(2). Similar findings were made for recordings inside the VND. Due to the small sample size sexual dimorphisms could not be addressed. In summary, these results seem to indicate that the presently used stimulants produce similar responses at the respiratory epithelium and in the VND which argues against a specific responsiveness of the VND epithelium to chemosensory stimuli although it has to be kept in mind that the effective sample size was small.
Collapse
Affiliation(s)
- T Hummel
- Smell and Taste Clinic, Department of Otorhinolaryngology, Technical University of Dresden Medical School, Dresden, Germany.
| | | | | | | |
Collapse
|