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Koch R, Haßlmeyer E, Tantinger D, Rulsch M, Weigand C, Struck M. Track J. Image Processing. BIOMED ENG-BIOMED TE 2015; 60 Suppl 1:s182-92. [DOI: 10.1515/bmt-2015-5008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Huber A, Koch R, Haßlmeyer E, Rulsch M, Weigand C, Struck M, Hofmann C. Track P. Prevention and Rehabilitation Engineering. BIOMED ENG-BIOMED TE 2015; 60 Suppl 1:s345-60. [DOI: 10.1515/bmt-2015-5014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Kammerer S, Höink AJ, Wessling J, Heinzow H, Koch R, Schuelke C, Heindel W, Buerke B. Abdominal and pelvic CT: is positive enteric contrast still necessary? Results of a retrospective observational study. Eur Radiol 2014; 25:669-78. [PMID: 25316055 DOI: 10.1007/s00330-014-3446-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Revised: 08/05/2014] [Accepted: 09/16/2014] [Indexed: 11/24/2022]
Abstract
PURPOSE Evaluation of diagnostic accuracy of abdominal CT depending on the type of enteric contrast agent. METHODS AND MATERIALS Multislice CTs of 2,008 patients with different types of oral preparation (positive with barium, n = 576; neutral with water, n = 716; and no enteric contrast, n = 716) were retrospectively evaluated by two radiologists including delineation of intestinal segments and influence on diagnosis and diagnostic reliability exerted by the enteric contrast, using a three-point scale. Furthermore, diagnostic reliability of the delineation of selected enteric pathologies was noted. CT data were assigned into groups: oncology, inflammation, vascular, pathology, trauma and gastrointestinal pathology. RESULTS Delineation of the bowel was clearly practicable across all segments irrespective of the type of enteric contrast, though a slight impairment was observed without enteric contrast. Although delineation of intestinal pathologies was mostly classified "clearly delimitable" more difficulties occurred without oral contrast (neutral/positive/no contrast, 0.8 %/3.8 %/6.5 %). Compared to examinations without enteric contrast, there was a significant improvement in diagnosis that was even increased regarding the reader's diagnostic reliability. Positive opacification impaired detection of mucosal enhancement or intestinal bleeding. CONCLUSION Water can replace positive enteric contrast agents in abdominal CTs. However, selected clinical questions require individual enteric contrast preparations. Pathology detection is noticeably impaired without any enteric contrast.
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Uhlig CE, Koch R, Promesberger J, Hirschfeld G, Schmidt H, Seitz B, Reinhard T, Böhringer D. Attitudes toward postmortem cornea donation in Germany: a multicenter survey. Graefes Arch Clin Exp Ophthalmol 2014; 252:1955-62. [DOI: 10.1007/s00417-014-2796-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 07/29/2014] [Accepted: 08/27/2014] [Indexed: 11/28/2022] Open
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Weber N, Koch R, Reilmann R. G02 Longitudinal Development Of Cognitive Test Scores In Premanifest And Manifest Patients Of The Registry-cohort. Journal of Neurology, Neurosurgery and Psychiatry 2014. [DOI: 10.1136/jnnp-2014-309032.142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Barlinn K, Seibt J, Engellandt K, Gerber J, Puetz V, Kepplinger J, Wunderlich O, Pallesen LP, Bodechtel U, Koch R, von Kummer R, Dzialowski I. Multimodal Computed Tomography Based Definition of Cerebral Imaging Profiles for Acute Stroke Reperfusion Therapy (CT-DEFINE): Results of a Prospective Observational Study. Clin Neuroradiol 2014; 25:403-10. [PMID: 25150187 DOI: 10.1007/s00062-014-0320-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Accepted: 06/17/2014] [Indexed: 11/24/2022]
Abstract
PURPOSE To prospectively evaluate the prognostic impact of multimodal computed tomography-based imaging in ischemic stroke patients potentially eligible for reperfusion therapy. METHODS Anterior circulation stroke patients underwent non-contrast CT (NCCT), CT-angiography, and CT-perfusion within 12 h from symptom-onset. Patients could be treated with intravenous-tissue plasminogen activator (IV-tPA), endovascular or combined reperfusion therapies. Cerebral imaging profiles (IP) were NCCT-Alberta Stroke Program Early CT Score (ASPECTS) > 7 (IP1); NCCT-ASPECTS > 5 and proximal occlusion on CT-angiography (IP2); CT-perfusion mismatch between cerebral blood volume (CBV)-ASPECTS, and cerebral blood flow (CBF)-ASPECTS ≥ 2 (IP3). Favorable outcome was defined as modified Rankin Scale ≤ 2 at 3 months. RESULTS Of 102 included patients, 62 (61%) received any reperfusion therapy. In IP2 and IP3, favorable outcome was more frequent in patients with reperfusion therapy than in those without; however, this did not reach statistical significance (IP2: 39% vs 15%, p = 0.26; IP3: 50% vs 17 %; p = 0.31). No difference was seen in IP1 (58% vs 58%, p = 1.0). In IP2, patients with IV-tPA alone achieved better functional outcome (50% vs 11%, p = 0.03) and lower mortality (0% vs 28%, p = 0.045) than those without. CONCLUSIONS Our results suggest a benefit with imaging profile selection based upon the combination of a small-to-moderate-sized infarction and a visible intracranial occlusion in patients receiving IV-tPA. Reperfusion therapy may be futile in patients without proven vessel occlusion.
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Lang A, Koch R, Rohn K, Gasse H. Histomorphometric analysis of collagen and elastic fibres in the cranial and caudal fold of the porcine glottis. Anat Histol Embryol 2014; 44:186-99. [PMID: 24995486 DOI: 10.1111/ahe.12125] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Accepted: 05/05/2014] [Indexed: 11/28/2022]
Abstract
The porcine glottis differs from the human glottis in its cranial and caudal vocal folds (CraF, CauF). The fibre apparatus of these folds was studied histomorphometrically in adult minipigs. For object definition and quantification, the colour-selection tools of the Adobe-Photoshop program were used. Another key feature was the subdivision of the cross-sections of the folds into proportional subunits. This allowed a statistical analysis irrespective of differences in thickness of the folds. Both folds had a distinct, dense subepithelial layer equivalent to the basement membrane zone in humans. The subsequent, loose layer was interpreted - in principle - as being equivalent to Reinke's space of the human vocal fold. The next two layers were not clearly separated. Due to this, the concept of a true vocal ligament did not appear applicable to neither CauF nor CraF. Instead, the body-cover model was emphasized by our findings. The missing vocalis muscle in the CraF is substituted by large collagen fibre bundles in a proportional depth corresponding to the position of the muscle of the CauF. The distribution of elastic fibres made the CraF rather than the CauF more similar to the human vocal fold. We suggest that these data are useful for those wishing to use the porcine glottis as a model for studying oscillatory properties during phonation.
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Frerichs H, Koch R, Tappe M, Wagner HG. Investigation of the Reaction of Naphthalene with 0(3P) in the Gas Phase. ACTA ACUST UNITED AC 2014. [DOI: 10.1515/zna-1989-1114] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The rate of the reaction between naphthalene and atomic oxygen in the electronic ground state was determined in a discharge flow system with mass spectrometric detection for temperatures between 362 and 773 K. All measurements were performed in an excess of O atoms over hydrocarbon. The second order rate constant was determined to be
Kinetic data are compared with data about the reactions of other aromatic substances and atomic oxygen in the ground state. Some possible reaction channels are discussed
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Gruber U, Koch R, Maier BP, Schult OWB. Energie- und Intensitätsmessung der während des Ta182- und Ta183-Zerfalls von W182 und W183 ausgesandten γ-Strahlung. ACTA ACUST UNITED AC 2014. [DOI: 10.1515/zna-1965-0709] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
17 γ-lines were measured in the decay of Ta182 and 31 γ-transitions have been observed during the decay of Ta183 using the Risö bent crystal spectrometer. The consistency of the energies found was tested by means of the combination principle. The best set of states was determined for the level scheme of W182 and W183. Some discrepancies between earlier intensity measurements are removed.
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Hagen U, Koch R. Zum Wirkungsmechanismus organischer Sulfhydryl-Verbindungen als Strahlenschutzstoffe. ACTA ACUST UNITED AC 2014. [DOI: 10.1515/znb-1957-0406] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Es wurde die chemische Reaktionsfähigkeit der SH-Gruppe einer Reihe von organischen SH-Verbindungen geprüft und mit ihrer Strahlen-Schutzwirkung im Tierversuch verglichen.
Einen Strahlenschutz geben nur SH-Verbindungen der Konstitution
Geringe Änderungen können zur Strahlen-Sensibilisierung führen, wie an β-Homocystein, Isocystein, Penicillamin und Thioglykol in Tierversuchen gezeigt werden konnte.
Die Reaktionsfähigkeit der SH-Gruppe betrachteten wir an folgenden Reaktionen: Redoxpotential, Autoxydation unter Schwermetall-Katalyse, Additionsreaktion an Monojodessigsäure und Aktivierungsfähigkeit eines inaktiven Kathepsinpräparates.
Eine eindeutige Parallele zwischen Reaktionsfähigkeit der SH-Gruppe und Strahlen-Schutzwirkung ergab sich nur bei der Aktivierung des verwendeten Fermentpräparates, d. h. alle Schutzkörper aktivieren das Kathepsin ebensogut wie Cystein. während die unwirksamen die Fermentaktivität kaum beeinflussen.
Es ist wahrscheinlich, daß der zum Strahlenschutz führende Vorgang der Kathepsin-Aktivierung sehr ähnlich ist. Hierfür kommt neben einer Reduktionswirkung des SH-Körpers vor allem seine Fähigkeit, gemischte Disulfide zu bilden. in Betracht.
Die Ergebnisse werden zusammen mit bereits bestehenden Vorstellungen über den Wirkungsmechanismus der SH-haltigen Strahlenschutz-Verbindungen diskutiert. Dabei muß an eine Affinität der Schutzkörper zu bestimmten körpereigenen SH-Gruppen gedacht werden.
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Koch R, Markau K. Elektronenspin-Resonanzspektren des Schwefels in bestrahlten Sulfhydrylkörpern und ihre Nachweisbarkeit im niederen Strahlendosisbereich. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2014. [DOI: 10.1515/znb-1961-0905] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Die Sulfhydrylkörper Cystein, Homocystein, 5-Mercaptopyridoxin oder Methionin weisen nach Röntgenbestrahlung verschiedene Elektronenspin-Resonanzspektren (ESR-Spektren) auf. Am Beispiel des Cysteins wird nachgewiesen, daß noch Radikalkonzentrationen nach Bestrahlung mit 100 r festzustellen sind. Die Bedeutung der Beobachtungen für die Biologie der primären Strahlenwirkung wird diskutiert.
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Klingelhöfer L, Mucha D, Geiger K, Koch R, von Kummer R. Prognostic Value of Conventional Magnetic Resonance Imaging for Adult Patients with Brain Tumors. Clin Neuroradiol 2014; 25:281-9. [PMID: 24828225 DOI: 10.1007/s00062-014-0309-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Accepted: 04/21/2014] [Indexed: 01/17/2023]
Abstract
PURPOSE Magnetic resonance imaging (MRI) is the pivotal diagnostic step in patients with brain tumors, and is performed before histological diagnosis is available. We hypothesized that conventional MRI is as accurate as tumor histology in differentiating malignant from benign clinical course. METHODS Two neuroradiologists blinded to any clinical information evaluated the first diagnostic MRI of 244 brain tumor patients before any treatment, using a self-developed standardized list of image criteria and prospectively determined world health organization (WHO) tumor grade and tumor entity. All patients were examined with at least T1- and T2-weighted spin echo sequences before and after contrast injection on 1 and 1.5-T MRI scanners. Following the patients prospectively for 8-13 years after diagnosis, we were able to use nonsurvival at 5 years as a criterion for malignity and reference for the prognostic accuracy of both MRI and tumor tissue histology. RESULTS The accuracy for predicting nonsurvival at 5 years was 91% (95% confidence interval (CI): 87-94%) for MRI and 92% (95% CI: 88-95%) for histology. The Kaplan-Meier survival curves of patients with benign and malignant brain tumors as diagnosed by MRI or histology differed significantly (p < 0.001). Histology confirmed benignity or malignity in 201 patients (82%, 95% CI: 77-87%). Sources of misdiagnosis were metastases diagnosed as astrocytoma WHO IV, atypical meningiomas, and low-grade astrocytoma with malignant transformation. CONCLUSION MRI appears as accurate as histology in predicting survival at 5 years after diagnosis. Histological diagnosis may be more specific, however, and is needed to assess the tumor's specific biology.
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Weßling J, Schülke C, Koch R, Kohlhase N, Wassenaar L, Mesters R, Höink AJ, D Anastasi M, Karpitschka M, Fabel M, Wulff AM, Pinto dos Santos D, Kiessling A, Graser A, Bornemann L, Dicken V, Heindel W, Buerke B. Therapy response evaluation of malignant lymphoma in a multicenter study: comparison of manual and semiautomatic measurements in CT. ROFO-FORTSCHR RONTG 2014; 186:768-79. [PMID: 24497088 DOI: 10.1055/s-0033-1356424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
PURPOSE Comparison of manual one-/bi-dimensional measurements versus semi-automatically derived one-/bi-dimensional and volumetric measurements for therapy response evaluation of malignant lymphoma during CT follow-up examinations in a multicenter setting. MATERIALS AND METHODS MSCT data sets of patients with malignant lymphoma were evaluated before (baseline) and after two cycles of chemotherapy (follow-up) at radiological centers of five university hospitals. The long axis diameter (LAD), the short axis diameter (SAD) and the bi-dimensional WHO of 307 target lymph nodes were measured manually and semi-automatically using dedicated software. Lymph node volumetry was performed semi-automatically only. The therapeutic response was evaluated according to lymphoma-adapted RECIST. RESULTS Based on a single lymph node, semi-automatically derived multidimensional parameters allowed for significantly more accurate therapy response classification than the manual or the semi-automatic unidimensional parameters. Incorrect classifications were reduced by up to 9.6%. Compared to the manual approach, the influence of the study center on correct therapy classification is significantly less relevant when using semi-automatic measurements. CONCLUSION Semi-automatic volumetry and bi-dimensional WHO significantly reduce the number of incorrectly classified lymphoma patients by approximately 9.6% in the multicenter setting in comparison to linear parameters. Semi-automatic quantitative software tools may help to significantly reduce wrong classifications that are associated with the manual assessment approach. KEY POINTS ► Semi-automatic volumetry and bi-dimensional WHO significantly reduce the number of incorrectly classified lymphoma patients ► Manual lymph node evaluation with uni-dimensional parameters is inferior to semi-automatic analysis in a multicenter setting ► Semi-automatic quantitative software tools should be introduced in clinical study evaluation.
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Koch R, Lang A. Der Bindegewebsapparat der Glottis beim Schwein unter besonderer Berücksichtigung des Alters. Pneumologie 2013. [DOI: 10.1055/s-0033-1343965] [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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Kammerer S, Knauer A, Buerke B, Heindel W, Koch R, Wessling J. Brauchen wir noch eine orale Kontrastierung für abdominelle MSCT-Untersuchungen? Erste Studienergebnisse. ROFO-FORTSCHR RONTG 2013. [DOI: 10.1055/s-0033-1346301] [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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Koch R. The Combating of Tuberculosis in the Light of the Experience that has been Gained in the Successful Combating of Other Infectious Diseases. J Comp Pathol 2013; 148:107-14. [DOI: 10.1016/j.jcpa.2013.01.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Mehl A, Koch R, Zaruba M, Ender A. 3D monitoring and quality control using intraoral optical camera systems. INTERNATIONAL JOURNAL OF COMPUTERIZED DENTISTRY 2013; 16:23-36. [PMID: 23641662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The quality of intraoral scanning systems is steadily improving, and they are becoming easier and more reliable to operate. This opens up possibilities for routine clinical applications. A special aspect is that overlaying (superimposing) situations recorded at different times facilitates an accurate three-dimensional difference analysis. Such difference analyses can also be used to advantage in other areas of dentistry where target/actual comparisons are required. This article presents potential indications using a newly developed software, explaining the functionality of the evaluation process and the prerequisites and limitations of 3D monitoring.
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Weber N, Koch R, Reilmann R. J04 Measuring cognitive decline in Huntington's disease: a longitudinal analysis of the UHDRS cognitive battery. Journal of Neurology, Neurosurgery and Psychiatry 2012. [DOI: 10.1136/jnnp-2012-303524.114] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Burtscher M, Gatterer H, Dünnwald T, Pesta D, Faulhaber M, Netzer N, Koch R, König K, Ulmer H. Effects of supervised exercise on gamma-glutamyl transferase levels in patients with isolated impaired fasting glucose and those with impaired fasting glucose plus impaired glucose tolerance. Exp Clin Endocrinol Diabetes 2012; 120:445-50. [PMID: 22639399 DOI: 10.1055/s-0032-1311642] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
AIM To study the effects of a supervised exercise program on serum gamma-glutamyl transferase (GGT), glycemic control and cardiovascular risk factors in pre-diabetic patients with isolated impaired fasting glucose (IFG) and those with IFG plus impaired glucose tolerance (IGT). METHODS Out of 60 pre-diabetic patients (30 with isolated IFG and 30 with IFG + IGT) 24 were randomly assigned to the supervised exercise program (1 h twice a week) and 36 only obtained counselling on the risk of diabetes and its prevention. Patients have been followed over a 12-month period. RESULTS The main findings were that patients with IFG + IGT had increased GGT levels at baseline (49.2±27.4 U/L) compared to subjects with isolated IFG (28.1±21.9 U/L) (p<0.01), and that GGT levels improved only after the supervised exercise intervention within the IFG + IGT subjects ( - 17.7±19.6 U/L). Similarly, baseline triglyceride levels were also higher in IFG + IGT patients (p<0.001) and there was a decrease through exercise intervention in these patients only (p<0.05). CONCLUSION GGT is an unspecific marker of oxidative stress and both high plasma glucose and triglycerides levels may produce oxidative stress. Thus, patients with IFG + IGT seem to have higher levels of oxidative stress than those with isolated IFG. Based on the known association between GGT levels and cardiovascular risk factors, IFG + IGT patients may be at higher risk for the development of cardiovascular diseases. The specific effect of regular exercise on GGT in pre-diabetic patients may contribute to the understanding of the preventive effects related to exercise.
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Weßling J, Puesken M, Koch R, Kohlhase N, Persigehl T, Mesters R, Heindel W, Buerke B. MSCT Follow-Up in Malignant Lymphoma: Comparison of Manual Linear Measurements with Semi-Automated Lymph Node Analysis for Therapy Response Classification. ROFO-FORTSCHR RONTG 2012; 184:795-804. [DOI: 10.1055/s-0032-1312751] [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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Koch R. The Coupling of Electromagnetic Power to Plasmas. FUSION SCIENCE AND TECHNOLOGY 2012. [DOI: 10.13182/fst12-a13515] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Grine D, Messiaen A, Vervier M, Dumortier P, Koch R. Summary and results of the study of the hybrid matching option implementation of the ITER ICRH system. FUSION ENGINEERING AND DESIGN 2012. [DOI: 10.1016/j.fusengdes.2011.12.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Paul MK, Lyssoivan A, Koch R, Wauters T, Douai D, Bobkov V, Van Eester D, Lerche E, Ongena J, Rohde V, Noterdaeme JM, Graham M, Mayoral ML, Monakhov I, Nightingale M, Plyusnin V. Plasma and antenna coupling characterization in ICRF-wall conditioning experiments. FUSION ENGINEERING AND DESIGN 2012. [DOI: 10.1016/j.fusengdes.2011.10.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Hamann CH, Koch R, Pleus S. NEW RESULTS ON THE BENZYLATION OF SATURATED MONO- AND DISACCHARIDES—A SEMIEMPIRICAL STUDY. J Carbohydr Chem 2011. [DOI: 10.1081/car-120003737] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Kraft-Neumärker M, Lorenz K, Koch R, Hoffmann T, Mäntylä P, Sorsa T, Netuschil L. Full-mouth profile of active MMP-8 in periodontitis patients. J Periodontal Res 2011; 47:121-8. [PMID: 21958332 DOI: 10.1111/j.1600-0765.2011.01416.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND OBJECTIVE MMP-8 in gingival crevicular fluid is considered as a protease with high destructive potential because of its ability to degrade collagen in periodontitis-affected patients. The aim of this study was to investigate whether there was a relationship between clinical diagnostic parameters and the concentration of active MMP-8 (aMMP-8) in gingival crevicular fluid in a site-level full-mouth analysis. Based on these data, the prognostic value of aMMP-8 levels in relation to pocket depth may be evaluated. MATERIAL AND METHODS Clinical measurements of pocket depth, bleeding on probing (BOP), plaque index (PlI) and gingival index (GI), as well as samples of gingival crevicular fluid, were obtained from four sites of each tooth of nine healthy female patients with chronic generalized periodontitis. The aMMP-8 concentration in gingival crevicular fluid was quantified by ELISA using specific monoclonal antibodies. Multiple linear regression models for the single measures of aMMP-8 and pocket depth were calculated with GI and BOP as additional variables. RESULTS Between 92 and 112 recordings were obtained for each parameter in each patient. Mean values of between 31.5 and 88.8% were calculated for pocket depths of ≥ 4 mm. Mean pocket depths ranged from 3.11 to 4.73 mm, the mean BOP values ranged from 34.0 to 96.7% and the mean full-mouth gingival crevicular fluid aMMP-8 concentration ranged from 3.2 to 23.7 ng/mL. CONCLUSION In this sample of female periodontitis patients, a broad range of intra-individual and interindividual aMMP-8 values was found. Although the explained variance was rather weak, a statistically significant relationship between aMMP-8 and pocket depth was proven.
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Froehner M, Schober R, Koch R, Lossnitzer A, Wirth M. UP-03.001 Adult Urological Sarcomas: 20-Year Experience. Urology 2011. [DOI: 10.1016/j.urology.2011.07.1091] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Korneli N, Hempel U, Koch R, Hannig C, Klimm W. P42-influence of TGF-ß1 and culturing medium on ALP expression in human pulp fibroblasts with different root development. BULLETIN DU GROUPEMENT INTERNATIONAL POUR LA RECHERCHE SCIENTIFIQUE EN STOMATOLOGIE & ODONTOLOGIE 2011; 49:108. [PMID: 22750374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Received: 04/11/2011] [Accepted: 04/11/2011] [Indexed: 06/01/2023]
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Koch R. An Address on the Fight against Tuberculosis in the Light of the Experience that has been Gained in the Successful Combat of other Infectious Diseases. BRITISH MEDICAL JOURNAL 2011; 2:189-93. [PMID: 20759758 DOI: 10.1136/bmj.2.2117.189] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Koch R. A Further Communication on a Remedy for Tuberculosis. BRITISH MEDICAL JOURNAL 2011; 1:125-7. [PMID: 20753227 DOI: 10.1136/bmj.1.1568.125] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Rumpf S, Bohlen S, Bechtel N, Koch R, Lange H, Reilmann R. Postural assessement in dynamic posturography - a useful motor phenotype measure for presymptomatic and manifest Huntington disease? KLIN NEUROPHYSIOL 2011. [DOI: 10.1055/s-0031-1272714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Ashraf T, Gusenbauer C, Stangl J, Hesser G, Wegscheider M, Koch R. Stress and interdiffusion during molecular beam epitaxy of Fe on As-rich GaAs(001). JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2011; 23:042001. [PMID: 21406874 DOI: 10.1088/0953-8984/23/4/042001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Interdiffusion during growth of Fe on As-rich GaAs(001) substrates has been investigated by real time stress measurements. Compared to Ga-rich GaAs(001), interdiffusion processes are decisively reduced. The optimum growth temperature (characterized by abrupt interfaces, pseudomorphic growth and negligible intermixing) is found to lie below 50 °C. At higher growth temperatures interdiffusion effects increase and eventually lead to the formation of a compact crystalline alloy layer of presumably Fe(2 + x)Ga(1 - x), as evidenced by transmission electron microscopy and x-ray diffraction.
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Puesken M, Buerke B, Fortkamp R, Koch R, Seifarth H, Heindel W, Weßling J. Liver Lesion Segmentation in MSCT: Effect of Slice Thickness on Segmentation Quality, Measurement Precision and Interobserver Variability. ROFO-FORTSCHR RONTG 2011; 183:372-80. [DOI: 10.1055/s-0029-1245983] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Böhm MRR, Prokosch V, Merté RL, Koch R, Busse H, Stupp T. [Microbiological analysis in contact lens-associated keratits]. Klin Monbl Augenheilkd 2010; 228:808-14. [PMID: 21132625 DOI: 10.1055/s-0029-1245840] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
INTRODUCTION More than 125 million (2 %) people worldwide wear contact lenses (CL). 0.011 - 0.2 % of the wearers develop keratitis per year. The aim of this study was to explore and analyse the spectrum of germs in different microbiological analysis techniques to optimize the strategy of antiobiotic therapy. PATIENTS AND METHODS A retrospective study about 65 eyes with CL induced keratitis or corneal ulceration who were treated in our hospital between 2005 - 2010. We analysed and compared the development of best-corrected visual acuity (BCVA) under single and combined antibiotic therapy and microbiological analysis of conjunctiva (CS) and CL and CL-container swabs (CLS). RESULTS Of the patients 96.9 % were soft contact lenses wearers. 48.8 % had microbiological findings in the CS, 81.3 % in CLS. 19.6 % (n = 9) coagulase-negative Stapyhlococcus and 17.3 (n = 8) Pseudomonas species were found. Different spectra of germs in CS and CLS were found. Gram-positive bacteria in CS (54.5 %) were dominant, whereas Gram-negative bacteria were dominant in CLS. No significant difference of mean BCVA changes between single (0.09 ± 0.2) and double (0.14 ± 0.29) topical antibiotic therapy (p = 0.16) were seen, but significant differences between the groups of "gentamicin & ofloxacin" (0.2 ± 0.2) and "moxifloxacin & tobramycin" (0.1 ± 0.43) (p < 0.05) were found. No significant differences of BCVA change between patients with positive (0.12 ± 0.23) and negative (0.20 ± 0.37) microbiological results of conjunctival swabs were observed (p = 0.5). CONCLUSIONS A strong association between keratitis among wearers of soft lenses and typical spectra of germs was found. Different microbiological findings in different swabs, a lack of findings in around 51.2 % of CS combined with the comparable clinical outcomes between sterile and "microbial" disease means the findings from CS are less important. No differences in development of BCVA between single and double antibiotical therapy were found. There was a better outcome of BCVA with ofloxacin with gentamicin compared to newer generation agents. To improve current treatment strategies in future we recommend increasing the microbiological analysis of CL and CL containers.
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Rapp J, Koppers W, van Eck H, van Rooij G, Goedheer W, de Groot B, Al R, Graswinckel M, van den Berg M, Kruyt O, Smeets P, van der Meiden H, Vijvers W, Scholten J, van de Pol M, Brons S, Melissen W, van der Grift T, Koch R, Schweer B, Samm U, Philipps V, Engeln R, Schram D, Lopes Cardozo N, Kleyn A. Construction of the plasma-wall experiment Magnum-PSI. FUSION ENGINEERING AND DESIGN 2010. [DOI: 10.1016/j.fusengdes.2010.04.009] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Koch R, Sander C. Primär nodales follikuläres Lymphom mit sekundärer kutaner Manifestation. Hautarzt 2010; 61:976-9. [DOI: 10.1007/s00105-009-1902-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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91
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Enns GM, Koch R, Brumm V, Blakely E, Suter R, Jurecki E. Suboptimal outcomes in patients with PKU treated early with diet alone: revisiting the evidence. Mol Genet Metab 2010; 101:99-109. [PMID: 20678948 DOI: 10.1016/j.ymgme.2010.05.017] [Citation(s) in RCA: 128] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2010] [Revised: 05/27/2010] [Accepted: 05/28/2010] [Indexed: 11/22/2022]
Abstract
BACKGROUND The National Institute of Health (NIH) published a Consensus Statement on the screening and management of Phenylketonuria (PKU) in 2000. The panel involved in the development of this consensus statement acknowledged the lack of data regarding the potential for more subtle suboptimal outcomes and the need for further research into treatment options. In subsequent years, the approval of new treatment options for PKU and outcome data for patients treated from the newborn period by dietary therapy alone have become available. We hypothesized that a review of the PKU literature since 2000 would provide further evidence related to neurocognitive, psychosocial, and physical outcomes that could serve as a basis for reassessment of the 2000 NIH Consensus Statement. METHODS A systematic review of literature residing in PubMed, Scopus and PsychInfo was performed in order to assess the outcome data over the last decade in diet-alone early-treated PKU patients to assess the need for new recommendations and validity of older recommendations in light of new evidence. RESULTS The majority of publications (140/150) that contained primary outcome data presented at least one suboptimal outcome compared to control groups or standardized norms/reference values in at least one of the following areas: neurocognitive/psychosocial (N=60; 58 reporting suboptimal outcomes); quality of life (N=6; 4 reporting suboptimal outcomes); brain pathology (N=32; 30 reporting suboptimal outcomes); growth/nutrition (N=34; 29 reporting suboptimal outcomes); bone pathology (N=9; 9 reporting suboptimal outcomes); and/or maternal PKU (N=19; 19 reporting suboptimal outcomes). CONCLUSIONS Despite the remarkable success of public health programs that have instituted newborn screening and early introduction of dietary therapy for PKU, there is a growing body of evidence that suggests that neurocognitive, psychosocial, quality of life, growth, nutrition, bone pathology and maternal PKU outcomes are suboptimal. The time may be right for revisiting the 2000 NIH Consensus Statement in order to address a number of important issues related to PKU management, including treatment advancements for metabolic control in PKU, blood Phe variability, neurocognitive and psychological assessments, routine screening measures for nutritional biomarkers, and bone pathology.
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Rumpf S, Bohlen S, Bechtel N, Koch R, Lange H, Reilmann R. F15 Balance control in Huntington's disease: is the berg balance scale a useful test for clinical and quantitative motor assessment? Journal of Neurology, Neurosurgery and Psychiatry 2010. [DOI: 10.1136/jnnp.2010.222620.15] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Rumpf S, Bohlen S, Bechtel N, Koch R, Lange H, Reilmann R. F16 Postural assessment in dynamic posturography—a useful motor phenotype measure for presymptomatic and manifest Huntington's disease? Journal of Neurology, Neurosurgery and Psychiatry 2010. [DOI: 10.1136/jnnp.2010.222620.16] [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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95
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Reinhold P, Grützenmache S, Pabst R, Koch R, Schulz R, Kirschvink N, Oechtering GU, Lippert JP, Fey K, Rosenbruch M. [Species-specific comparison of upper airways]. Pneumologie 2010; 64:442. [PMID: 20632235 DOI: 10.1055/s-0030-1255517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Koch R, Hennig-Pauka I, Gasse H. Prinzipielle Unterschiede am Stimmapparat von Mensch und Schwein: Einige wesentliche morphologische Kriterien. Pneumologie 2010; 64:446-7. [DOI: 10.1055/s-0030-1255510] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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97
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Hennig-Pauka I, Höltig D, Ganter M, Koch R, Gasse H, Blecha F, Waldmann KH, Gerlach G. Reaktionen des angeborenen Immunsystems beim Schwein nach Aerosolinfektion mit Actinobacillus pleuropneumoniae. Pneumologie 2010. [DOI: 10.1055/s-0030-1251450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Koch R, Hennig-Pauka I, Gasse H. Prinzipielle Unterschiede am Stimmapparat von Mensch und Schwein: Einige wesentliche morphologische Kriterien. Pneumologie 2010. [DOI: 10.1055/s-0030-1251448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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99
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Püsken M, Fortkamp R, Buerke B, Koch R, Seifarth H, Heindel W, Wessling J. Semiautomatische Segmentierung von Leberherden in der MSCT: Bestimmung von Segmentierungsqualität, Messgenauigkeit und Interobservervariabilität in Abhängigkeit von der Schichtdicke. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1252865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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100
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Koch R. The Ion Cyclotron, Lower Hybrid and Alfven Wave Heating Methods. FUSION SCIENCE AND TECHNOLOGY 2010. [DOI: 10.13182/fst10-a9411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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