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Seyfried S, Hasenberg T, Otto M. Letter to the Editor for the Manuscript the Complex Interplay of Physical Fitness, Protein Intake and Vitamin D Supplementation After Bariatric Surgery. Obes Surg 2017; 27:3010. [PMID: 28918512 DOI: 10.1007/s11695-017-2918-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Otto M. Therapeutic approaches in frontotemporal lobar degeneration – anti-tau therapy strategy in primary progressive aphasia. PHARMACOPSYCHIATRY 2017. [DOI: 10.1055/s-0037-1606419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Otto M, Markvardsen L, Tankisi H, Jakobsen J, Fuglsang-Frederiksen A. The electrophysiological response to immunoglobulin therapy in chronic inflammatory demyelinating polyneuropathy. Acta Neurol Scand 2017; 135:656-662. [PMID: 27546708 DOI: 10.1111/ane.12663] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/01/2016] [Indexed: 12/14/2022]
Abstract
OBJECTIVE To characterize changes in motor nerve conduction studies (MNCS) and motor unit number index (MUNIX) following treatment with subcutaneous immunoglobulin and to assess whether these changes are related to muscle strength. METHODS Data from 23 patients participating in a randomized, controlled trial were analyzed. MNCS and MUNIX were performed before and after 12 weeks of treatment. Isokinetic strength (IMS) was measured in various muscles together with grip strength (GS). RESULTS Proximally evoked compound muscle action potential (CMAP) amplitudes and MUNIX tended to be better preserved in treated patients (P=.049 and .045). Changes in other parameters did not differ between groups. There was no correlation between changes in electrophysiological parameters and IMS. Changes in GS were related to median nerve motor conduction velocity, distal motor latency, CMAP amplitudes, and distally evoked CMAP duration (P=.013-.035). CONCLUSION Proximally evoked CMAP amplitudes appear to be the best MNCS parameter to assess treatment outcome in chronic inflammatory demyelinating polyneuropathy.
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Elrefai M, Hasenberg T, Diouf S, Weiß C, Kienle P, Otto M. Quality of Life After Bariatric Surgery: Comparison of Four Different Surgical Procedures. Bariatr Surg Pract Patient Care 2017. [DOI: 10.1089/bari.2016.0050] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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Wiltfang J, Lewczuk P, Otto M. [Biomarkers for dementia and other neurodegenerative diseases : Current developments]. DER NERVENARZT 2017; 87:1305-1309. [PMID: 27844089 DOI: 10.1007/s00115-016-0238-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Cerebrospinal fluid-based neurochemical dementia diagnostics (CSF-NDD) support the early and differential diagnosis of dementia, most importantly the diagnosis of early or preclinical Alzheimer's dementia (AD). Meanwhile CSF-NDD are now recommended for improved exclusion and positive diagnostics of AD by the German national neuropsychiatry S3 dementia guidelines ( www.DGPPN.de ). Meta-analyses of independent international multicenter studies have shown that a combined CSF analysis of amyloid-beta 1-42 (Aβ 1-42, decreased), total tau proteins (increased) and phospho-tau proteins (increased) offers a sensitivity and specificity of 80-90 % for the early and differential diagnosis of AD (AD versus all other). Generally, CSF-NDD should be combined with blood-based routine diagnostics and should be part of routine CSF diagnostics, e. g. cell count and cell differentiation (if applicable), intrathecal antibody synthesis and blood-CSF barrier analysis. The CSF-NDD are most valuable for the improved differentiation between reversible dementia syndromes and irreversible neurodegenerative dementia, e. g. cognitive deficits due to late onset depression (pseudodementia due to depression) or AD. Combined with extended psychometric neuropsychological evaluation and neuroimaging methods, such as magnetic resonance imaging (MRI), dopamine transporter scanning (DaTscan) by single photon emission computed tomography (SPECT), 18F-fluorodeoxyglucose positron emission tomography (glucose-PET) and amyloid-PET, CSF-NDD also significantly improve the differential diagnostics within the heterogeneous group of primary neurodegenerative dementias. Meanwhile, several independent studies have indicated that the Aβ 1-42:Aβ 1-40 ratio is superior to the determination of Aβ 1-42 alone. Currently, several international research initiatives have been launched to further harmonize and optimize preanalytical procedures and CSF-NDD biomarker assays.
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Mattern J, Lammert A, Otto M, Hammes HP. Retinopathy in an obesity WHO III cohort: prevalence and risk factors. Br J Ophthalmol 2017; 101:1550-1554. [DOI: 10.1136/bjophthalmol-2016-309566] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 01/31/2017] [Accepted: 02/20/2017] [Indexed: 11/03/2022]
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Ververs C, Hostens M, van Zijll Langhout M, Otto M, Govaere J, Van Soom A. 109 REPRODUCTIVE PERFORMANCE PARAMETERS IN A LARGE HERD OF CONFINED FREE-ROAMING WHITE RHINOCEROSES (CERATOTHERIUM SIMUM). Reprod Fertil Dev 2017. [DOI: 10.1071/rdv29n1ab109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
During the last decade, the population of wild white rhinoceroses has been in steady decline, mainly because of increased poaching incidents and habitat loss. Therefore, more data are necessary on reproduction of this endangered species in order to improve captive breeding, which is at present not very successful. Currently, ~20,000 Southern white rhinoceroses are remaining of which the majority are privately owned. The aim of this study was to create reference values of several reproductive parameters for future white rhinoceros breeding. In previous studies, only low numbers of animals have been observed, often in captive settings. In this study performed between 2008 and 2016, reproductive performance was analysed in 1300 animals kept in a geographically identical, confined free-roaming environment. Analyses were performed in R (R Development Core Team, 2008) using the lme4 and fixed package to model the number of animals born (family = Poisson) and sex ratio (family = binomial). Females had a median age of 83.2 months at first calving (interquartile range: 72.9–110.7) and intercalving intervals of 29.2 (interquartile range: 24.6–34.8) months. Fertility records were excellent with 38% adult females calving per year when compared to previous research, in which first reproduction occurred between 78 and 138 months of age with an intercalving period of 3 years average. A clear seasonal calving pattern was seen with a significant increase of calvings during December–April when compared to April–December. In contrast to the Trivers-Willard hypothesis, our results did not show any significant skewed progeny sex ratios. Weather observations showed no significant influence of rain or season on sex ratios of the calves. Furthermore, translocations of animals did not seem to interfere with reproductive success when looking at intercalving periods or age at first calving. In the free roaming environment of over 10,000 ha, this captive population showed an average annual population growth (%) of 18 ± 0.07 (minimum 5 to maximum 26). As such, comparable breeding management systems can increase population numbers and contribute to increase dwindling population numbers of the wild white rhinoceros. This is the first study to describe reproductive performances in the white rhinoceros at such large scale, indicating that confined free-roaming populations can be used for captive breeding of white rhinoceros to contribute to white rhinoceros conservation.
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Sorianello V, De Angelis G, Cassese T, Midrio M, Romagnoli M, Moshin M, Otto M, Neumaier D, Asselberghs I, Van Campenhout J, Huyghebaert C. Complex effective index in graphene-silicon waveguides. OPTICS EXPRESS 2016; 24:29984-29993. [PMID: 28059383 DOI: 10.1364/oe.24.029984] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We report for the first time and characterize experimentally the complex optical conductivity of graphene on silicon photonic waveguides. This permits us to predict accurately the behavior of photonic integrated devices encompassing graphene layers. Exploiting a Si microring add/drop resonator, we show the effect of electrical gating of graphene on the complex effective index of the waveguide by measuring both the wavelength shift of the resonance and the change in the drop peak transmission. Due to electro-refractive effect of graphene a giant (>10-3) change in the effective index is demonstrated for the first time on Si photonics waveguides and this large effect will crucially impact performances and consumption of Si photonics devices. We confirmed the results by two independent experiments involving two different gating schemes: Si gating through the ridge waveguide, and polymer-electrolyte gating. Both the experiments demonstrate a very large phase effect in good agreement with numerical calculations. The reported results validate the Kubo model for the case of graphene-Si photonics interfaces and for propagation in this type of waveguide. This is fundamental for the next design and fabrication of future graphene-silicon photonics devices.
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Hoellen F, Rody A, Kostara A, Karn T, Holtrich U, El-Balat A, Otto M, Hanker L. Expression and impact of TFF3 in epithelial ovarian cancer. Geburtshilfe Frauenheilkd 2016. [DOI: 10.1055/s-0036-1592960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Müller HP, Schroeter M, Anderl-Straub S, Uttner I, Tredici KD, Otto M, Ludolph A, Kassubek J. EPV 2. Spreading patterns of behavioral variant frontotemporal dementia: Analysis of longitudinal in vivo diffusion tensor imaging data. Clin Neurophysiol 2016. [DOI: 10.1016/j.clinph.2016.05.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Otto M. Reply for the Letter to the Editor for the Manuscript "Sleeve Gastrectomy and Roux-y-Gastric Bypass Lead to Comparable Changes in Body Composition After Adjustment for Initial Body Mass Index". Obes Surg 2016; 26:1934. [PMID: 27272507 DOI: 10.1007/s11695-016-2239-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Zibrandtsen I, Kidmose P, Otto M, Ibsen J, Kjaer TW. Case comparison of sleep features from ear-EEG and scalp-EEG. ACTA ACUST UNITED AC 2016; 9:69-72. [PMID: 27656268 PMCID: PMC5021956 DOI: 10.1016/j.slsci.2016.05.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 05/18/2016] [Accepted: 05/25/2016] [Indexed: 11/30/2022]
Abstract
Background We investigate the potential usability of a novel in-the-ear electroencephalography recording device for sleep staging. Methods In one healthy subject we compare simultaneous earelectroencephalography to standard scalp EEG visually and using power spectrograms. Hypnograms independently derived from the records are compared. Results We find that alpha activity, K complexes, sleep spindles and slow wave sleep can be visually distinguished using earelectroencephalography. Spectral peaks are shared between the two records. Hypnograms are 90.9% similar. Conclusion The results indicate that ear-electroencephalography can be used for sleep staging.
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Marsh I, Otto M, Weichert J, Baiu D, Bednarz B. SU-G-TeP3-08: Pre-Clinical Radionuclide Therapy Dosimetry in Several Pediatric Cancer Xenografts. Med Phys 2016. [DOI: 10.1118/1.4957088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Ferdinand D, Otto M, Weiss C. Get the most from your data: a propensity score model comparison on real-life data. Int J Gen Med 2016; 9:123-31. [PMID: 27274306 PMCID: PMC4876794 DOI: 10.2147/ijgm.s104313] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Purpose In the past, the propensity score has been in the middle of several discussions in terms of its abilities and limitations. With a comprehensive review and a practical example, this study examines the effect of propensity score analysis of real-life data and introduces a simple and effective clinical approach. Materials and methods After the authors reviewed current publications, they applied their insights to the data of a nonrandomized clinical trial in bariatric surgery. This study examined weight loss in 173 patients where 127 patients received Roux-en-Y gastric bypass surgery and 46 patients sleeve gastrectomy. Both groups underwent analysis in terms of their covariate distribution using Mann–Whitney U and χ2 testing. Mean differences within excess weight loss in native data were examined with Student’s t-test. Three propensity score models were defined and matching was performed. Covariate distribution and mean differences in excess weight loss were checked with Mann–Whitney U and χ2 testing. Results Native data implied a significant difference in excess weight loss. The propensity score models did not confirm this difference. All models proved that both surgical procedures were equal, due to their weight-loss induction. Covariate distribution improved after the matching procedure in terms of an equal distribution. Conclusion It seemed that a practical clinical approach with outcome-related covariates as a propensity score base is the ideal midpoint between an equal distribution in covariates and an acceptable loss of data. Nevertheless, propensity score models designed with clinical intent seemed to be absolutely suitable for overcoming heterogeneity in covariate distribution.
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Trost E, Otto M, Hasenberg T, Lammert A, Hammes HP. Beeinflusst die Art der Gewichtszunahme die Entstehung des metabolischen Syndroms bei Adipositas WHO Grad 3? DIABETOL STOFFWECHS 2016. [DOI: 10.1055/s-0036-1580952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Lammert A, Nittka S, Otto M, Schneider-Lindner V, Kemmer A, Krämer BK, Birck R, Hammes HP, Benck U. Performance of the 1 mg dexamethasone suppression test in patients with severe obesity. Obesity (Silver Spring) 2016; 24:850-5. [PMID: 26948683 DOI: 10.1002/oby.21442] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Accepted: 12/01/2015] [Indexed: 01/08/2023]
Abstract
OBJECTIVE To analyze the performance of the 1 mg dexamethasone suppression test (DST) in patients with obesity. Special attention was paid to the influence of interfering medication on DST. METHODS In this prospective cohort study (Mannheim Obesity Study), patients with obesity were evaluated before bariatric surgery. For evaluation of hypercortisolism, a 1 mg dexamethasone-suppression test (DST) in all subjects was performed. Medication was assessed for possible interference. RESULTS Two hundred seventy-eight patients with a mean age of 42.3 years (68.8% women) and a mean BMI of 47.9 ± 8.4 kg/m(2) were screened. Insufficient suppression of cortisol after DST was found in 24 patients (8.6%). In two patients hypercortisolism was confirmed. The specificity for DST was calculated at 92.0%. Only CYP3A4 inducers (n = 22, 7.9%) and estrogen therapy (n = 17, 6.1%) were significantly associated with falsely elevated cortisol after DST. Regression analysis excluded any interrelation between DST and anthropometry. CONCLUSIONS Low prevalence of hypercortisolism (0.7 or <1.8%) was found. Specificity of DST in this cohort typically screened for hypercortisolism was 92.0% (≤ 50 nmol/L). DST should be avoided in patients taking CYP3A4 inducers or estrogen therapy, due to their significant interaction. In summary, the 1 mg DST is an adequate test for screening for hypercortisolism even in patients with extreme obesity.
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Strobel A, Fuglsang-Frederiksen A, Otto M, Murtuzova A, Tankisi H. Sural sensory nerve conduction studies in demyelinating polyneuropathies. Clin Neurophysiol 2016. [DOI: 10.1016/j.clinph.2015.11.112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Fuchs S, Otto M, Qerama E, Beniczky S, Johnsen B, Fuglsang-Frederiksen A, Tankisi H. ID 80 – Comparison of surface recording and near nerve technique in diagnosis and localization of ulnar nerve entrapment neuropathy. Clin Neurophysiol 2016. [DOI: 10.1016/j.clinph.2015.11.435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Otto M, Ronellenfitsch U, Tröndle S, Kienle P, Kähler G, Hasenberg T. Is Preoperative Esophagoduodenoscopy Required in all Patients Prior to Bariatric Surgery? Bariatr Surg Pract Patient Care 2015. [DOI: 10.1089/bari.2015.0024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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Otto M, Färber J, Haneder S, Michaely H, Kienle P, Hasenberg T. Postoperative changes in body composition--comparison of bioelectrical impedance analysis and magnetic resonance imaging in bariatric patients. Obes Surg 2015; 25:302-9. [PMID: 25096342 DOI: 10.1007/s11695-014-1382-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND Roux-en-Y gastric bypass (RYGB) result in a marked reduction of body fat and also visceral fat (VF) decrease up to 36 % in 16 weeks. This leads to positive effects on cardiometabolic risks, which are known to be correlated with the occurrence of VF. This study analyzed the validity of bioelectrical impedance analysis (BIA) for determining VF in the postoperative course. In addition, magnetic resonance imaging (MRI) was performed for prediction of whole VF in bariatric patients on the basis of a single slice. METHODS Eighteen patients, who underwent RYGB (18), were included in this study. MRI and BIA measurements were performed 1 day before surgery, as well as 6, 12, and 24 weeks after surgery. RESULTS During the postoperative observation period, we found a significant decrease of both subcutaneous fat (SF) and VF. SF measured by MRI was highly correlated with the level of body fat shown by BIA. In contrast, the VF volume, as determined by MRI, showed no correlation with the body fat measured by BIA. In addition, we were able to show a significant correlation between MRI measured VF volume and the particular single-layer fat area. CONCLUSIONS Compared to the widely used bioelectrical impedance analysis to measure changes in body composition after bariatric procedures, a single-layer MRI was superior in determining VF. Single-layer MRI may be a better tool to recognize changes of VF after bariatric procedures.
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Otto M, Kautt S, Kremer M, Kienle P, Post S, Hasenberg T. Handgrip strength as a predictor for post bariatric body composition. Obes Surg 2015; 24:2082-8. [PMID: 24902652 DOI: 10.1007/s11695-014-1299-6] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND After bariatric surgery, the postoperative quality of weight loss is variable. The aim of weight loss treatment is to reduce fat mass while keeping fat free mass, in particular body cell mass (BCM), constant. Detection of low BCM is an important aspect of surgical follow up. Handgrip dynamometry is a rapid and inexpensive test to measure static muscle strength, which is an independent outcome indicator of various medical conditions. The objective of this study is to examine the change in handgrip strength after bariatric surgery and its predictive value for postoperative body composition. Furthermore, this study was carried out at the University Hospital, Germany. METHODS Twenty-five patients who underwent a bariatric procedure (laparoskopic Roux-Y gastric bypass n=16 or sleeve resection n=9) were included in this study. Bioelectrical impedance analysis and hand-grip strength were measured preoperatively and repeated every 6 weeks for 4 months. An analysis of variance was performed to observe the changes in these individual parameters. RESULTS Postoperatively, all patients showed a significant decrease in the body mass index and body fat. The extracellular mass, BCM, and the lean mass of the patients remained constant. Handgrip strength showed no significant changes during the postoperative course. Nevertheless, the preoperative hand-grip strength showed a strong positive correlation with the postoperative body composition. CONCLUSIONS This study showed no changes in the static muscle force after bariatric surgery. The preoperative handgrip strength was strongly correlated with postoperative body composition and may be used to identify patients who need more attention before surgery and in the early postoperative phase.
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Kraus I, Kraus I, Kraus I, Besong-Agbo D, Otto M, Klafki H, Klafki H, Wiltfang J, Wiltfang J. Measurement of ERK1/2 Isoform distribution in peripheral blood mononuclear cells derived from whole blood from patients with different neuropsychiatric disorders. PHARMACOPSYCHIATRY 2015. [DOI: 10.1055/s-0035-1557965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Kraus I, Besong Agbo D, Otto M, Klafki H, Wiltfang J. Measurement of ERK1/2 isoform distribution in peripheral blood mononuclear cells derived from whole blood from patients with different neuropsychiatric disorders. PHARMACOPSYCHIATRY 2015. [DOI: 10.1055/s-0035-1558049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Kriegsmann M, Casadonte R, Randau T, Gravius S, Pennekamp P, Strauss A, Oldenburg J, Wieczorek K, Deininger SO, Otto M, Kriegsmann J. MALDI imaging of predictive ferritin, fibrinogen and proteases in haemophilic arthropathy. Haemophilia 2015; 20:446-53. [PMID: 24847521 DOI: 10.1111/hae.12377] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Arthropathy as a result of repeated joint bleeding is a severe complication in patients with haemophilia. In the evaluation of synovial tissue specimens, histology alone is non-specific and there is considerable morphological overlap with other joint diseases. Formalin-fixed paraffin-embedded specimens are available in pathological institutes and can be studied to understand the pathogenesis of haemophilic arthropathy. A powerful technique to identify hundreds of proteins in a tissue section combining proteomics with morphology is imaging mass spectrometry (IMS). We determined whether matrix-assisted laser desorption/ionization (MALDI) IMS can be used to identify and map protein signatures in the synovial tissue of patients with haemophilic arthropathy. MALDI IMS was applied to synovial tissue of six patients with haemophilic arthropathy. We detected several peaks predictive in mass with ferritin light (m/z 1608) and heavy chain (m/z 1345), alpha- (m/z 1071) and beta (m/z 1274) haemoglobin subunits, truncated coagulation factor VIII peptide (m/z 1502, 1176), beta- and gamma fibrinogen peptides (m/z 980, 1032, 1117 and 1683), and annexin A2 (m/z 1111, 1268, 1460, 2164). In addition, the distribution of these proteins in synovial tissue sections was demonstrated. MALDI IMS identified and mapped specific proteins in the synovial membrane of patients with haemophilic arthropathy known to be involved in the pathogenesis of other joint diseases. This technique is a powerful tool to analyse the distribution of proteins in synovial tissue sections.
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Bertheau S, Aghdassi A, Otto M, Hegenscheid K, Runge S, Lerch M, Simon P. 53-jährige Urlauberin auf Hiddensee mit Schlangenbiss. Internist (Berl) 2015; 56:189-90, 192-4. [DOI: 10.1007/s00108-015-3653-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Becker D, Otto M, Ammann P, Keller I, Drögemüller C, Leeb T. The brown coat colour of Coppernecked goats is associated with a non-synonymous variant at the TYRP1 locus on chromosome 8. Anim Genet 2014; 46:50-4. [PMID: 25392961 DOI: 10.1111/age.12240] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/09/2014] [Indexed: 12/26/2022]
Abstract
The recent development of a goat SNP genotyping microarray enables genome-wide association studies in this important livestock species. We investigated the genetic basis of the black and brown coat colour in Valais Blacknecked and Coppernecked goats. A genome-wide association analysis using goat SNP50 BeadChip genotypes of 22 cases and 23 controls allowed us to map the locus for the brown coat colour to goat chromosome 8. The TYRP1 gene is located within the associated chromosomal region, and TYRP1 variants cause similar coat colour phenotypes in different species. We thus considered TYRP1 as a strong positional and functional candidate. We resequenced the caprine TYRP1 gene by Sanger and Illumina sequencing and identified two non-synonymous variants, p.Ile478Thr and p.Gly496Asp, that might have a functional impact on the TYRP1 protein. However, based on the obtained pedigree and genotype data, the brown coat colour in these goats is not due to a single recessive loss-of-function allele. Surprisingly, the genotype distribution and the pedigree data suggest that the (496) Asp allele might possibly act in a dominant manner. The (496) Asp allele was present in 77 of 81 investigated Coppernecked goats and did not occur in black goats. This strongly suggests heterogeneity underlying the brown coat colour in Coppernecked goats. Functional experiments or targeted matings will be required to verify the unexpected preliminary findings.
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Petzold J, Casadonte R, Otto M, Kriegsmann M, Granrath M, Baltzer A, Vogel J, Drees P, Deininger S, Becker M, Kriegsmann J. MALDI-Massenspektrometrie am Meniskus. Z Rheumatol 2014; 74:438-46. [DOI: 10.1007/s00393-014-1468-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Barth E, Fleischer C, Lenk T, Lehnert S, Jahn O, Otto M, Calzia E, Landwehrmeyer G, Lindenberg K. B32 Alterations in Mitochondrial Proteome of Brain and Skeletal Muscle in Two Transgenic HD Mouse Models do not Reflect Mitochondrial Respiratory Activity. Journal of Neurology, Neurosurgery and Psychiatry 2014. [DOI: 10.1136/jnnp-2014-309032.60] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Otto M, Tankisi H, Markvardsen L, Fuglsang-Frederiksen A. P236: Neurophysiological changes in CIDP patients treated with subcutaneous immunoglobulin. Clin Neurophysiol 2014. [DOI: 10.1016/s1388-2457(14)50364-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Feneberg E, Hübers A, Weishaupt J, Ludolph A, Otto M. Genetik und Neurochemische Biomarker bei Amyotropher Lateralsklerose und Frontotemporaler Lobärdegeneration. AKTUELLE NEUROLOGIE 2014. [DOI: 10.1055/s-0034-1374583] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Kriegsmann J, Casadonte R, Zweynert F, Kriegsmann M, Otto M, Deininger S. [MALDI-TOF imaging]. Z Rheumatol 2014; 72:724-8. [PMID: 23949199 DOI: 10.1007/s00393-013-1239-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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82
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Smesny S, Milleit B, Hipler UC, Milleit C, Schäfer MR, Klier CM, Holub M, Holzer I, Berger GE, Otto M, Nenadic I, Berk M, McGorry PD, Sauer H, Amminger GP. Omega-3 fatty acid supplementation changes intracellular phospholipase A2 activity and membrane fatty acid profiles in individuals at ultra-high risk for psychosis. Mol Psychiatry 2014; 19:317-24. [PMID: 23478748 DOI: 10.1038/mp.2013.7] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2011] [Revised: 12/10/2012] [Accepted: 01/02/2013] [Indexed: 02/07/2023]
Abstract
The identification of an ultra-high risk (UHR) profile for psychosis and a greater understanding of its prodrome have led to increasing interest in early intervention to delay or prevent the onset of psychotic illness. In a randomized placebo-controlled trial, we have identified long-chain ω-3 (ω-3) polyunsaturated fatty acid (PUFA) supplementation as potentially useful, as it reduced the rate of transition to psychosis by 22.6% 1 year after baseline in a cohort of 81 young people at UHR of transition to psychosis. However, the mechanisms whereby the ω-3 PUFAs might be neuroprotective are incompletely understood. Here, we report on the effects of ω-3 PUFA supplementation on intracellular phospholipase A2 (inPLA(2)) activity, the main enzymes regulating phospholipid metabolism, as well as on peripheral membrane lipid profiles in the individuals who participated in this randomized placebo-controlled trial. Patients were studied cross-sectionally (n=80) and longitudinally (n=65) before and after a 12-week intervention with 1.2 g per day ω-3 PUFAs or placebo, followed by a 40-week observation period to establish the rates of transition to psychosis. We investigated inPLA(2) and erythrocyte membrane FAs in the treatment groups (ω-3 PUFAs vs placebo) and the outcome groups (psychotic vs non-psychotic). The levels of membrane ω-3 and ω-6 PUFAs and inPLA(2) were significantly related. Some of the significant associations (that is, long-chain ω-6 PUFAs, arachidonic acid) with inPLA(2) activity were in opposite directions in individuals who did (a positive correlation) and who did not (a negative correlation) transition to psychosis. Supplementation with ω-3 PUFA resulted in a significant decrease in inPLA(2) activity. We conclude that ω-3 PUFA supplementation may act by normalizing inPLA(2) activity and δ-6-desaturase-mediated metabolism of ω-3 and ω-6 PUFAs, suggesting their role in neuroprogression of psychosis.
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Haase A, Fallet S, Otto M, Schlageter V, Krogh K. Gastrointestinal motility and sleep patterns assessed by ambulatory tracking of telemetric capsules combined with polysomnography. Sleep Med 2013. [DOI: 10.1016/j.sleep.2013.11.088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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84
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Steinacker P, Weidehaas K, Cepek L, Feneberg E, Kretzschmar HA, Otto M. Influence of the blood-CSF-barrier function on S100B in neurodegenerative diseases. Acta Neurol Scand 2013; 128:249-56. [PMID: 23510454 DOI: 10.1111/ane.12113] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/22/2013] [Indexed: 11/29/2022]
Abstract
OBJECTIVES S100B was proposed to be a CSF and blood biomarker in a number of neurological diseases. The route of S100B to the CSF and the blood in neurodegenerative diseases is unclear. To assess the impact of the physiological or impaired blood-CSF-barrier (BCSFB) function on S100B concentrations in CSF and serum, we analysed S100B in correlation of the albumin quotient. MATERIALS AND METHODS S100Bserum and S100BCSF were quantified in samples from patients with a variety of neurological diseases using an immunoluminometric assay (Sangtec LIA-mat). Measures were analysed for a potential relation to the CSF/serum-albumin quotient (Qalb ), which indicates the BCSFB functionality. RESULTS We reasserted increased S100B concentrations in CSF and serum of CJD patients. Elevated S100Bserum correlated with elevated S100BCSF in all diagnoses but with exceptions. Neither S100BCSF nor S100Bserum did correlate with Qalb , even when the BCSFB function was progressively impaired as demonstrated by increased Qalb . CONCLUSIONS The lack of correlation between Qalb and S100BCSF is typically seen for proteins which are brain derived. Therefore, we propose that S100B enters the blood with the bulk flow via Pacchioni's granules and along the spinal nerve sheaths.
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Fedders M, Grünewald G, Burkhardt J, Otto M, Wirth D, Schlachter F, Weimann A. PP138-SUN NUTRITIONAL RISK SCREENING FROM A HOSPITAL ECONOMY POINT OF VIEW. Clin Nutr 2013. [DOI: 10.1016/s0261-5614(13)60183-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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86
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Surewaard BGJ, de Haas CJC, Vervoort F, Rigby KM, DeLeo FR, Otto M, van Strijp JAG, Nijland R. Staphylococcal alpha-phenol soluble modulins contribute to neutrophil lysis after phagocytosis. Cell Microbiol 2013; 15:1427-37. [PMID: 23470014 PMCID: PMC4784422 DOI: 10.1111/cmi.12130] [Citation(s) in RCA: 131] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Revised: 02/07/2013] [Accepted: 02/20/2013] [Indexed: 01/01/2023]
Abstract
Staphylococcus aureus community-acquired (CA) MRSA strains are highly virulent and can cause infections in otherwise healthy individuals. The most important mechanism of the host for clearing S. aureus is phagocytosis by neutrophils and subsequent killing of the pathogen. Especially CA-MRSA strains are very efficient in circumventing this neutrophil killing. Interestingly, only a relative small number of virulence factors have been associated with CA-MRSA, one of which are the phenol soluble modulins (PSMs). We have recently shown that the PSMs are functionally inhibited by serum lipoproteins, indicating that PSMs may exert their cytolytic function primarily in the intracellular environment. To further investigate the intracellular role of the PSMs we measured the effect of the α-type and β-type PSMs on neutrophil killing after phagocytosis. Using fluorescently labelled S. aureus, we measured bacterial survival after phagocytosis in a plate reader, which was employed next to flow cytometry and time-lapse microscopy. Phagocytosis of the CA-MRSA strain MW2 by human neutrophils resulted in rapid host cell death. Using mutant strains of MW2, we demonstrated that in the presence of serum, the intracellular expression of only the psmα operon is both necessary and sufficient for both increased neutrophil cell death and increased survival of S. aureus. Our results identify PSMα peptides as prominent contributors to killing of neutrophils after phagocytosis, a finding with major implications for our understanding of S. aureus pathogenesis and strategies for S. aureus vaccine development.
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Süssmuth S, Brettschneider J, Spreer A, Wick M, Jesse S, Lewerenz J, Otto M, Tumani H. [Current cerebrospinal fluid diagnostics for pathogen-related diseases]. DER NERVENARZT 2013; 84:229-44. [PMID: 23371378 PMCID: PMC7095826 DOI: 10.1007/s00115-012-3701-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Cerebrospinal fluid (CSF) analysis is of utmost importance to establish an early diagnosis of central nervous system (CNS) infections and to start appropriate therapy. The CSF white cell count, lactate concentration and total protein levels are usually available very quickly even from non-specialized laboratories and the combination of these parameters often provides sufficient information for decision-making in emergency cases. It is, however, not always possible to identify the underlying infective agent despite further CSF analyses, such as bacterial and fungal staining, evaluation of the blood-CSF barrier function, intrathecal immunoglobulin synthesis and oligoclonal IgG bands. Therefore, close communication between the laboratory and the clinician is an important prerequisite to specify additional pathogen-related diagnostic measures for successful confirmation of the diagnosis.
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Bönninghoff R, Schwenke K, Keese M, Magdeburg R, Bitter-Suermann H, Otto M, Hasenberg T, Post S, Sturm J. Effect of different liver resection methods on liver damage and regeneration factors VEGF and FGF-2 in mice. Can J Surg 2013; 55:389-93. [PMID: 22992401 DOI: 10.1503/cjs.007911] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND Different approaches to study liver regeneration in murine models have been proposed. We investigated the effect of different liver resection models on liver damage and regeneration parameters in mice. METHODS We compared the technical aspect of the 2 most commonly used techniques of 50% and 70% liver resection. Liver damage, as determined by the change in serum alanine aminotransferase and aspartate aminotransferase, as well as the regeneration parameters VEGF and FGF-2 were analyzed at 6 time points. A postoperative vitality score was introduced. RESULTS Cholestasis was not observed for either technique. Both resection techniques resulted in full weight recovery of the liver after 240 hours, with no significant difference between sham and resection groups. Postoperative animal morbidity and total protein levels did not differ significantly for either method, indicating early and full functional recovery. However, comparing the mitogenic growth factors FGF-2 and VEGF, a significant increase in serum levels and, therefore, increased growth stimulus, was shown in the extended resection group. CONCLUSION Extended resection led to a greater response in growth factor expression. This finding is important since it shows that growth factor response differs acdording to the extent of resection. We have demonstrated the need to standardize murine hepatic resection models to adequately compare the resulting liver damage.
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Markvardsen LH, Debost JC, Harbo T, Sindrup SH, Andersen H, Christiansen I, Otto M, Olsen NK, Lassen LL, Jakobsen J. Subcutaneous immunoglobulin in responders to intravenous therapy with chronic inflammatory demyelinating polyradiculoneuropathy. Eur J Neurol 2013; 20:836-42. [DOI: 10.1111/ene.12080] [Citation(s) in RCA: 104] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2012] [Accepted: 11/16/2012] [Indexed: 01/15/2023]
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Lukas A, Kilian R, Hay B, Muche R, von Arnim CAF, Otto M, Riepe M, Jamour M, Denkinger MD, Nikolaus T. [Maintenance of health and relief for caregivers of elderly with dementia by using "initial case management": experiences from the Lighthouse Project on Dementia, Ulm, ULTDEM-study]. Z Gerontol Geriatr 2012; 45:298-309. [PMID: 22538793 DOI: 10.1007/s00391-012-0337-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
BACKGROUND When facing the well-known demographic development with an increasing number of people suffering from dementia, there is a need of programmes to support nursing relatives and care at home. Many support services have been established in the past few years but they are rarely used by the relatives and the patients. The purpose of the Lighthouse Project Ulm (ULTDEM Study) was to prove the effectiveness of a single advisory approach in order to provide support services after care level classification and to relieve the burden placed on relatives caring for family members suffering from dementia ("initial case management"). METHODS The ULTDEM Study is a prospective, open, randomized, controlled, interventional study with different parallel outcome measures (burden of caring, quality of life and mood). After the randomization, the interventional group was given comprehensive, individual advice about available treatment possibilities for dementia patients. Control group participants received standard treatment. Inclusion criteria were application of a care level (0 or 1) as well as dementia diagnosis. All participants (patients/relatives) underwent an initial and a 6 month comprehensive assessment. RESULTS Our results show that a single advisory approach does not lead to a significant difference in outcome measures in interventional and control groups. Those tendencies described have to be interpreted as clinically not relevant. Although utilization of support services increases, it remains similar in both study groups. A confirmatory interpretation has not been possible due to a lack of adjustment to the findings regarding multiple testing and an insufficient degree of recruitment. Possible causes will be discussed such as premature intervention during the course of the disease, a lack of intervention blinding, recruitment bias and lack of an influence on adherence with regard to the use of support services. IMPLICATIONS The study demonstrates that there is a substantial information deficit for persons affected by dementia and their relatives. Innovative ways still have to be developed to ensure that this information actually reaches the target audience.
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Kriegsmann M, Seeley EH, Schwarting A, Kriegsmann J, Otto M, Thabe H, Dierkes B, Biehl C, Sack U, Wellmann A, Kahaly GJ, Schwamborn K, Caprioli RM. MALDI MS imaging as a powerful tool for investigating synovial tissue. Scand J Rheumatol 2012; 41:305-9. [PMID: 22639849 DOI: 10.3109/03009742.2011.647925] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE To identify and image protein biomarker candidates in the synovial tissue of patients with rheumatoid arthritis (RA) and patients with osteoarthritis (OA). METHODS A novel matrix-assisted laser desorption/ionization (MALDI) imaging mass spectrometry (IMS) technique was applied to the analysis of synovial tissue. Patients were classified according to the American College of Rheumatology (ACR) criteria for RA. Frozen sections were stained to obtain morphological data. Serial sections were desiccated, and spotted with matrix for MALDI analysis. Ions generated by laser irradiation of the tissue were separated in time, based on their m/z ratio, and were subsequently detected. IMS was used in a 'profiling' mode to detect discrete spots for rapid evaluation of proteomic patterns in various tissue compartments. Photomicrographs of the stained tissue images were reviewed by a pathologist. Areas of interest (10 discrete areas/compartment) were marked digitally and the histology-annotated images were merged to form a photomicrograph of the section taken before the MALDI measurement. Pixel coordinates of these areas were transferred to a robotic spotter, the matrix was spotted, and the coordinates of the spots were transferred to a mass spectrometer for spectral acquisition. The data generated were then subjected to biocomputation analysis to reveal the biomarker candidates. RESULTS Several peaks (m/z) consistent in mass with calgranulins, defensins, and thymosins were detected and their distribution in various synovial compartments (synovial lining and sublining layer) was demonstrated. CONCLUSION MALDI IMS is a powerful tool for the rapid detection of numerous proteins (in situ proteomics) and was applied here for the analysis of the distribution of proteins in synovial tissue sections.
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von Mühlendahl KE, Otto M. Risikokommunikation in der Umweltmedizin. Monatsschr Kinderheilkd 2012. [DOI: 10.1007/s00112-011-2575-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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93
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von Mühlendahl K, Otto M, Kerbl R. Kinderumwelt. Monatsschr Kinderheilkd 2012. [DOI: 10.1007/s00112-011-2571-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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94
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Puls R, Hegenscheid K, Bülow R, Laquar R, Otto M, Langner S, Kirsch M, Seipel R, Kühn JP, Mensel B, Hosten N. Populationsbasierte Ganzkörper-Magnetresonanztomographie. Fortlaufende prospektive, epidemiologische Bevölkerungsstudie - „Study of Health in Pomerania” (SHIP). ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1311308] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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95
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96
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Schiessl C, Gärtner J, Wildfeuer S, Voltz R, Breuer G, Otto M. Schmerztherapeutische Inhalte internationaler Curricula für die studentische Lehre in der Palliativmedizin. Schmerz 2012; 26:200-5. [DOI: 10.1007/s00482-012-1155-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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97
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Hidestrand M, Zangwill S, Tomita-Mitchell A, Oliphant A, Hidestrand P, Castleberry C, Stendahl G, Otto M, Liang H, Goetsch M, Ellis T, Shames B, Simpson P, Berger S, Tweddell J, Mitchell M. 254 Highly Sensitive Transplant Rejection Surveillance Using Targeted Detection of Donor Specific Cell Free DNA. J Heart Lung Transplant 2012. [DOI: 10.1016/j.healun.2012.01.261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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98
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Tumani H, Otto M. Kritische Auseinandersetzung mit den neuen diagnostischen Kriterien zur Multiplen Sklerose: Liquorchemischer Grundbefund-MS. KLIN NEUROPHYSIOL 2012. [DOI: 10.1055/s-0032-1301549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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99
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Watabe-Rudolph M, Song Z, Lausser L, Schnack C, Begus-Nahrmann Y, Scheithauer MO, Rettinger G, Otto M, Tumani H, Thal DR, Attems J, Jellinger KA, Kestler HA, von Arnim CAF, Rudolph KL. Chitinase enzyme activity in CSF is a powerful biomarker of Alzheimer disease. Neurology 2012; 78:569-77. [DOI: 10.1212/wnl.0b013e318247caa1] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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100
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Naumann V, Otto M, Wehrspohn R, Werner M, Hagendorf C. Interface and Material Characterization of Thin ALD-Al2O3 Layers on Crystalline Silicon. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.egypro.2012.07.069] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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