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English E, Bell S, Kamdar N, Swenson C, Wiese H, Rothman E, Morgan D. 07: Estimated blood loss as a predictor of morbidity following benign hysterectomy. Am J Obstet Gynecol 2018. [DOI: 10.1016/j.ajog.2017.12.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Nebel K, Stude P, Lüdecke C, Wiese H, Diener HC, Keidel M. Prospective PC-interactive Pressure Algesimetry of Post-Traumatic Neck pain after Whiplash Injury. Cephalalgia 2016; 25:205-13. [PMID: 15689196 DOI: 10.1111/j.1468-2982.2004.00842.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Cervical pain is a prominent symptom in both acute whiplash injury and late whiplash syndrome. However, no systematic analysis of post-traumatic pain development covering several weeks has yet been performed in whiplash patients. It was the aim of the present study to analyse the duration and course of post-traumatic muscle pain due to whiplash injury in a prospective follow-up examination with short investigation intervals. A recovery of initially increased muscle pain after whiplash injury within 1 month was hypothesized. Pressure pain of the splenius and trapezius muscles was recorded using PC-interactive pressure algesimetry. Whiplash patients were investigated during the acute injury stage and after 3, 4, and 6 weeks and compared with matched controls. We found significantly increased pressure pain of the splenius and trapezius muscles in the acute stage of whiplash injury. After 4 weeks patients' scores of pain parameters were comparable to those of healthy control subjects. Within the patient group the first changes of pressure pain were observed within 3 (splenius) and 4 weeks (trapezius). For most patients the recovery dynamics lasted 4-6 weeks. A minority of patients did not show any improvement after 6 weeks. The present study shows that the dynamics of pressure pain due to whiplash injury can be quantified by means of PC-interactive pressure algesimetry. Our results confirm the clinical experience that the acute post-traumatic cervical syndrome normally subsides within weeks.
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Affiliation(s)
- K Nebel
- Department of Neurology, University of Essen, Essen, Germany.
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Stude P, Nebel K, Lüdecke C, Wiese H, Diener HC, Keidel M. Quantification of Acute Neck Pain Following Whiplash Injury by Computer-Aided Pressure Algesimetry. Cephalalgia 2016; 24:1067-75. [PMID: 15566421 DOI: 10.1111/j.1468-2982.2004.00787.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Until now the clinical investigation of cervical pain due to whiplash injury is mainly based on finger palpation. The present study introduces a PC-interactive pressure algesimetry to standardize cervical pain measurement. Pressure pain scores of the splenius and trapezius muscles of 23 patients with an acute cervical syndrome after whiplash injury were compared to those of 24 healthy subjects. The pressure painfulness of neck and shoulder muscles was significantly increased in whiplash patients. The splenii muscles showed an equally increased muscle pain whereas the trapezii muscles showed a left-sided preponderance of painfulness, possibly due to the seat belt position in this group of motor vehicle drivers. The computer-interactive pressure algesimetry enables a standardized and rater-independent quantification of the cervical syndrome with neck and shoulder pain caused by whiplash injury.
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Affiliation(s)
- P Stude
- Department of Neurology, University of Essen, Essen, Germany.
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Komes J, Schweinberger SR, Wiese H. Contact affects the own-age bias and neural correlates of face memory in elderly participants. J Vis 2012. [DOI: 10.1167/12.9.25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Wiese H, Kaufmann JM, Schweinberger SR. Neural correlates of the own-race bias in face recognition memory: Evidence from event-related potentials. J Vis 2012. [DOI: 10.1167/12.9.786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Wiese H. A. W. Adamson: “Physical Chemistry of Surfaces”, 5. Auflage, John Wiley & Sons Inc., New York, Chichester, Brisbane, Toronto, Singapore 1990. 777 Seiten, Preis: £ 47.50. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19910950629] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Wiese H, Horn D. Fiber-Optic Quasielastic Light Scattering in Concentrated Latex Dispersions: The Performance of Single-Mode vs. Multimode Fibers. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19920961206] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Wiese H, Horn D. Fiber-Optic Quasielastic Light Scattering in Concentrated Dispersions: The On-Line Process Control of Carotenoid Micronization. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19930971215] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Mauth C, Bono E, Haas S, Paesold G, Wiese H, Maier G, Boos N, Graf-Hausner U, Graf-Hausner U. Cell-seeded polyurethane-fibrin structures--a possible system for intervertebral disc regeneration. Eur Cell Mater 2009; 18:27-38; discussion 38-9. [PMID: 19802794 DOI: 10.22203/ecm.v018a03] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Nowadays, intervertebral disc (IVD) degeneration is one of the principal causes of low back pain involving high expense within the health care system. The long-term goal is the development of a medical treatment modality focused on a more biological regeneration of the inner nucleus pulposus (NP). Hence, interest in the endoscopic implantation of an injectable material took center stage in the recent past. We report on the development of a novel polyurethane (PU) scaffold as a mechanically stable carrier system for the reimplantation of expanded autologous IVD-derived cells (disc cells) to stimulate regenerative processes and restore the chondrocyte-like tissue within the NP. Primary human disc cells were seeded into newly developed PU spheroids which were subsequently encapsulated in fibrin hydrogel. The study aims to analyze adhesion properties, proliferation capacity and phenotypic characterization of these cells. Polymerase chain reaction was carried out to detect the expression of genes specifically expressed by native IVD cells. Biochemical analyses showed an increased DNA content, and a progressive enhancement of total collagen and glycosaminoglycans (GAG) was observed during cell culture. The results suggest the synthesis of an appropriate extracellular matrix as well as a stable mRNA expression of chondrogenic and/or NP specific markers. In conclusion, the data presented indicate an alternative medical approach to current treatment options of degenerated IVD tissue.
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Affiliation(s)
- C Mauth
- School of Life Sciences and Facility Management, Institute of Chemistry and Biological Chemistry, Campus Reidbach, Einsiedlerstrasse 31, CH-8820 Waedenswil/Zurich, Switzerland
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Ochsenfeld W, Petrich G, Schmidt HJ, Stollenwerk AH, Wiese H. Neptunium Decontamination in a Uranium Purification Cycle of a Spent Fuel Reprocessing Plant. SEP SCI TECHNOL 2006. [DOI: 10.1080/01496398308056121] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Wiese H, Tönnes C, de Greiff A, Nebel K, Gizewski E, Diener H, Stude P. Self-initiated movements in chronic prefrontal traumatic brain injury: an event-related functional MRI study. Akt Neurol 2005. [DOI: 10.1055/s-2005-919580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Nebel K, Stude P, Wiese H, Seyfarth J, Gizewski E, Diener H, Limmroth V. Aktivierung von aufmerksamkeitsassoziierten Strukturen bei MS-Patienten in Abhängigkeit von Aufmerksamkeitsdefiziten: eine fMRT-Studie. Akt Neurol 2005. [DOI: 10.1055/s-2005-919388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Wiese H, Toennes C, Nebel K, de Greiff A, Gizewski E, Forsting M, Stude P. Missing SMA Activation in Self-Initiated Movements after Chronic Prefrontal Traumatic Brain Injury: An Event-Related fMRI Study. KLIN NEUROPHYSIOL 2004. [DOI: 10.1055/s-2004-832230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Wiese H, Stude P, Sarge R, Nebel K, Diener HC, Keidel M. Korrelation ipsilateral erhöhter bewegungsbezogener Potentiale mit reduziertem funktionellen Outcome nach kontralateralem MCA-Infarkt. Akt Neurol 2004. [DOI: 10.1055/s-2004-833225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Nebel K, Wiese H, Stude P, Seyfarth J, Gizewski ER, Forsting M, Diener HC, Limmroth V. Verminderte Aktivierung aufmerksamkeitsassoziierter Strukturen bei Multipler Sklerose. Akt Neurol 2004. [DOI: 10.1055/s-2004-833099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Wiese H, Stude P, Nebel K, de Greiff A, Forsting M, Diener HC, Keidel M. Zeitlicher Verlauf der Hirnaktivierung während Präparation und Ausführung selbstinitiierter Fingerbewegungen: Eine ereigniskorrelierte fMRT-Studie. KLIN NEUROPHYSIOL 2003. [DOI: 10.1055/s-2003-816559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Percy MJ, Amalvy JI, Barthet C, Armes SP, Greaves SJ, Watts JF, Wiese H. Surface characterization of vinyl polymer–silica colloidal nanocomposites using X-ray photoelectron spectroscopy. ACTA ACUST UNITED AC 2002. [DOI: 10.1039/b109044p] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Wang SJ, Typel S, Weiguny A, Wiese H. Response of a quantum system to a time-dependent external field and dynamical symmetry of the system. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/0305-4470/31/25/009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Hultborn H, Illert M, Nielsen J, Paul A, Ballegaard M, Wiese H. On the mechanism of the post-activation depression of the H-reflex in human subjects. Exp Brain Res 1996; 108:450-62. [PMID: 8801125 DOI: 10.1007/bf00227268] [Citation(s) in RCA: 333] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
It was demonstrated that the soleus H-reflex was depressed for more than 10 s following a preceding passive dorsiflexion of the ankle joint. This depression was caused by activation of large-diameter afferents with receptors located in the leg muscles, as an ischaemic block of large-diameter fibres just below the knee joint abolished the depression, whereas a similar block just proximal to the ankle joint was ineffective. The depression of the H-reflex was not caused by changes in motoneuronal excitability, as motor-evoked potentials by magnetic brain stimulation were not depressed by the same passive dorsiflexion. Therefore it was concluded that the long-lasting depression is due to mechanisms acting at presynaptic level. The transmission of the monosynaptic Ia excitation from the femoral nerve to soleus motoneurones was not depressed by the ankle dorsiflexion. The depression thus seems to be confined to those afferents that were activated by the conditioning dorsiflexion. In parallel experiments on decerebrate cats, more invasive methods have complemented the indirect techniques used in the experiments on human subjects. A similar long-lasting depression of triceps surae monosynaptic reflexes was evoked by a preceding conditioning stimulation of the triceps surae Ia afferents. This depression was accompanied by a reduction of the monosynaptic Ia excitatory postsynaptic potential recorded intracellularly in triceps surae motoneurones, but not by changes in the input resistance or membrane potential in the motoneurones. Stimulation of separate branches within the triceps surae nerve demonstrated that the depression is confined to those afferents that were activated by the conditioning stimulus. This long-lasting depression was not accompanied by a dorsal root potential. It is concluded that the long-lasting depression is probably caused by a presynaptic effect, but different from the "classical" GABAergic presynaptic inhibition which is widely distributed among afferent fibres and accompanied by dorsal root potentials. It is more probably related to the phenomenon of a reduced transmitter release from previously activated fibres, i.e. a homosynaptic post-activation depression. The consequences of this post-activation depression for the interpretation of results on spinal mechanisms during voluntary movements in man are discussed.
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Affiliation(s)
- H Hultborn
- Department of Medical Physiology, Panum Institute, University of Copenhagen, Denmark
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Wiese H, Taconis WK. Ovarian benign dermoid cyst. J Belge Radiol 1994; 77:231. [PMID: 7961388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- H Wiese
- Department of Radiology, Onze Lieve Vrouw Gasthuis, Amsterdam, The Netherlands
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Abstract
X-ray kinematography was used to investigate the kinematics of cat distal forelimb joints during motor behaviour. These joints are not accessible for instrumentation with external markers normally used in conventional motion analysis systems. To trace the movements in space two X-ray systems positioned rectangularly to each other illuminated the forelimb quasi-simultaneously with pulsed X-ray shots (time resolution: 20 ms). A mathematical model was developed for 3-dimensional reconstruction of the object and includes procedures for correction of image distortions, e.g., pincushion distortions and rotation of the image due to interaction of the earth's magnetic field with the electron optics of the image amplifiers. Accuracy of image correction and object reconstruction is +/- 1 pixel, corresponding to +/- 0.5 mm in space which is sufficient for investigation of the kinematics of cat distal forelimb joints. The approach described is of general relevance and useful in kinematic investigations where the structures under study are not directly accessible to external instrumentation with markers.
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Affiliation(s)
- A Boczek-Funcke
- Department of Physiology, Christian-Albrechts-Universität zu Kiel, Germany
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Keuren E, Wiese H, Horn D. Diffusing-wave spectroscopy in concentrated latex dispersions: An investigation using single-mode fibers. Colloids Surf A Physicochem Eng Asp 1993. [DOI: 10.1016/0927-7757(93)80096-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Kotzerke J, von der Hardt H, Wiese H, Seidenberg J, Beyer R, Hundeshagen H. [Mucociliary clearance in childhood]. Monatsschr Kinderheilkd 1992; 140:227-32. [PMID: 1614449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
AIM OF THE STUDY A new, nearly monodisperse human serum albumin particle produced by air-pressure-nebulization was inhaled by children and lung-transplant patients. METHOD After inhalation of the particles obtained with an air-pressure nebulizer, the initial deposition pattern showed a marked tracheobronchial deposition which could be reproducibly obtained without a special breathing technique, the alveolar deposition being not higher than 10%. With the use of 99mTc, the radiation exposure is limited to a level which is low enough for children, but images can be taken up to 24 hrs later. Further parameters for in vivo characterization of the mucociliary function are the 24 h retention pattern and the velocity of particle motion in the trachea. RESULTS Within the first 45 minutes, the global clearance rate was 51% in healthy children, which is rather high in comparison with the literature, most likely due to size of particles and the selection of patients with a mean age of 10.7 years. In ciliary dysfunction, the initial clearance rate was 16% and 46% within 24 h. CONCLUSIONS With simplification of the preparation, application, and examination technique, this method is to be used in children, so that a wider use can be anticipated. The normally fast initial elimination of particles allows quick differentiation of normal and impaired ciliary function.
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Affiliation(s)
- J Kotzerke
- Abteilung Nuklearmedizin und spezielle Biophysik, Medizinischen Hochschule Hannover
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Kotzerke J, Burchert W, Wiese H, von Smekal U, Hundeshagen H. Limitations of clearance determination using the single sample distribution volume method. An error analysis on the basis of compartment models. Eur J Nucl Med 1992; 19:19-24. [PMID: 1547803 DOI: 10.1007/bf00178303] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
To investigate the error possibly contained in the single sample distribution volume method for the determination of renal clearance, a mathematical model was applied to describe the effect of changes in distribution volume, clearance, intravascular space, intracompartmental exchange and the time point of blood sampling. The method was found to be valid only under well-defined circumstances (Topt = 45 +/- 5 min, Cl = 390 +/- 50 ml/min, Vd = 16.7 +/- 4 l, alpha = 0.05.V1 ml/min, V1/Vd = 0.5 +/- 0.05) as shown in sample calculations. Two-compartment model-based error calculations demonstrate that this technique implies at best an uncertainty of +/- 10% or more. Whilst it can be used preferably in healthy, normal-weight adults, it is not applicable, without error, under all other circumstances.
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Affiliation(s)
- J Kotzerke
- Department of Nuclear Medicine, Medical School Hannover, Federal Republic of Germany
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Wiese H. [Morita Panex-AC panoramic radiography with autofocus system and automatic exposure]. ZWR 1991; 100:526-8. [PMID: 1817390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Wiese H, Horn D. Single‐mode fibers in fiber‐optic quasielastic light scattering: A study of the dynamics of concentrated latex dispersions. J Chem Phys 1991. [DOI: 10.1063/1.460272] [Citation(s) in RCA: 85] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Wiese H. [Morita Panex-AC panoramic radiograph with autofocus system and automatic lighting]. Zahnarztl Prax 1990; 41:325-6, 328. [PMID: 2238951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- H Wiese
- Morita Europe GmbH, Frankfurt am Main
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Affiliation(s)
- H Wiese
- Department of Radiology, Onze Lieve Vrouwe Gasthuis, Amsterdam, The Netherlands
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Ortmann O, Wiese H, Knuppen R, Emons G. Acute facilitory action of progesterone on gonadotropin secretion of perifused rat pituitary cells. Acta Endocrinol (Copenh) 1989; 121:426-34. [PMID: 2508387 DOI: 10.1530/acta.0.1210426] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The purpose of this study was to investigate the kinetics and estrogen dependence of the facilitory progesterone action on LH and FSH secretion from pituitary cells under dynamic culture conditions. Anterior pituitary cells obtained from ovariectomized or intact adult Wistar rats were cultivated on Cytodex 1 microcarrier beads. The perifusion experiments were performed with four separate perfusion chambers. The cells of chambers I + II had been pretreated with medium containing vehicle (0.1% ethanol), those of chambers III + IV with medium containing 1 nmol/l estradiol for 48 h. After perfusion was started, each of the chambers was challenged with an initial 2-min GnRH (1 nmol/l) pulse. Chamber I was further perifused with medium containing vehicle, chamber II with medium containing vehicle + 100 nmol/l progesterone, chamber III with medium containing 1 nmol/l estradiol, and chamber IV with medium containing 1 nmol/l estradiol + 100 nmol/l progesterone. Three further GnRH pulses were administered at 50-min intervals to each of the chambers. In estradiol-primed cells from intact rats, progesterone induced a positive effect on LH and FSH secretion after 50 min of exposure to progesterone. After 100 min of progesterone treatment, LH and FSH release were enhanced to 420 and 500 per cent, respectively. When such cells were not primed with estradiol, a slight though insignificant positive action of progesterone on LH release was present after 50 and 100 min of treatment, whereas FSH secretion was not influenced. The facilitory effect of progesterone occurred only after 100 min when estradiol-primed cells from ovariectomized rats were used.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- O Ortmann
- Klinik für Frauenheilkunde und Geburtshilfe, Medizinische Universität zu Lübeck, FRG
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Kotzerke J, Schwarzrock R, Krischek O, Wiese H, Hundeshagen H. Technetium-99m DISIDA hepatobiliary agent in diagnosis of hepatocellular carcinoma, adenoma, and focal nodular hyperplasia. J Nucl Med 1989; 30:1278-80. [PMID: 2544700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
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Häussler JM, Illert D, Nath, Wiese H. Bewegungsanalyse bei der Katze — die Verwendung von Röntgentechniken zur Beschreibung der Bewegungen der distalen Extremitäten im Raum. BIOMED ENG-BIOMED TE 1989. [DOI: 10.1515/bmte.1989.34.s1.148] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Dannemann J, Hultborn H, Illert M, Krause H, Wiese H. Computergesteuerter Versuchsaufbau zur Messung von H-Reflexen am Menschen. BIOMED ENG-BIOMED TE 1989. [DOI: 10.1515/bmte.1989.34.s1.233] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Wiese H, Weil K. An efficient Fourier transform algorithm for frequency domains of several decades using logarithmically spaced time samples. ACTA ACUST UNITED AC 1988. [DOI: 10.1109/29.1636] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Wiese H, Koppenhöfer E. Minimizing the influence of the series resistance in potential clamped Ranvier nodes. Gen Physiol Biophys 1988; 7:143-56. [PMID: 3391397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Series resistance artifacts in ionic current measurements on single myelinated nerve fibres are commonly minimized by reducing sodium currents. Doing this some deviations from the predictions of the Hodgkin-Huxley-Frankenhaeuser formalism become evident. In the present investigation two methods to reduce sodium currents were used with and without compensated feedback to examine the influence of the nodal series resistance. Changing the availability of sodium permeability by appropriate prepulses peak sodium current-voltage relations obeyed the Hodgkin-Huxley-Frankenhaeuser formalism only provided the amount of compensated feedback was set to give minimum of the current-voltage relation near E = 0. For reduced sodium concentration in the bathing fluid the so-called independence principle predicts a shift of the minimum of the current-voltage relation on the potential axis in negative direction as compared to ordinary Ringer solution, if the effective series resistance is sufficiently small. This was confirmed by experiments only if the above mentioned amount of compensated feedback was used. The results suggest that the "E = 0"-criterion indicates optimum compensation of the influence of the series resistance.
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Affiliation(s)
- H Wiese
- Institute of Physiology, University of Kiel, Federal Republic of Germany
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Abstract
Based on 5000 ultrasound studies of infantile hips, Graf's classification and diagnostic criteria are reviewed with regard to their ability to discriminate between normal and pathological conditions. Additional criteria (delta angle and vector line) are presented, and the results compared. The proposed approach via visual analysis is explained as a flow chart. The consequences of the methodical limitations for use as a screening procedure are discussed.
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Zieger M, Wiese H, Schulz RD. [Value of angle measurements in hip sonography. Methodological and technical analysis]. Radiologe 1986; 26:253-6. [PMID: 3523589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The Graf classification of sonographic hip-studies is based upon angle-measurements. 167 patients have been examined and evaluated in a double-blind study of the reproducibility of these measurements and the resulting classification. The resulting ranges for the different types were compared with the values given by Graf. The influence of the investigator, the interpreter and of the chosen section plane were analysed and compared with the difference in classifying based upon visual impression. The global impression of the operator proves to be the most reliable basis for interpreting the ultrasound study (variation of 6%), while the measured angle beta (+/- 35% deviation) seems not to be as useful.
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Wiese H, Duchâteau R. Measurement of absolute membrane potential with the potential clamp system of nonner. Gen Physiol Biophys 1984; 3:511-2. [PMID: 6530138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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42
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Schumann H, Koppenhöfer E, Wiese H. Compensation of the low-pass filter properties of the current measuring internode in potential-clamped myelinated nerve fibres. Gen Physiol Biophys 1983; 2:287-95. [PMID: 6678771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The bandwidth of membrane current measurements in potential-clamped Ranvier nodes is limited by the low-pass filter properties of the internodes. If about 35% of the current measuring internode is grounded via an additional electrode, the bandwidth of this internode increases by a factor of about 40. Consequently, in potential clamp experiments the measured time course of the early ionic currents changes markedly, while the duration of the capacity current is shortened.
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Wiese H, Koppenhöfer E. On the capacity current in myelinated nerve fibres. Gen Physiol Biophys 1983; 2:297-312. [PMID: 6678772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Different equivalent circuits are presented to describe the capacity current, Ic, of potential-clamped Ranvier nodes. The corresponding transfer functions are discussed in examining the influence of the involved parameters on size and time course of Ic. The following results were obtained: i. The duration and the amplitude of Ic increased with increasing membrane capacity. ii. The amplitude of Ic increased with increasing gain or decreasing time constant of the clamp amplifier while its duration was shortened. iii. Similar effects were seen with decreasing resistance in series with the nodal membrane. iv. Qualitatively identical but stronger effects were seen with increasing bandwidth of the current measuring internode. Measurements were carried out under experimental conditions close to the calculated ones. They resembled the calculated curves satisfactorily.
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Abstract
The dynamic computed tomography (CT) densitometry is defined as the combination of rapid bolus injection of urographic contrast medium and timed sequential computed tomography scan permitting recognition of different patterns of enhancement. The results of this method on fifty patients with histologically proofed hepatic tumors (focal nodular hyperplasia n = 12, cavernous hemangioma n = 13, liver cell carcinoma in cirrhotic liver n = 10, primary liver cell carcinoma n = 6, bile duct carcinoma n = 4, others n = 5) are demonstrated. CT-densitometry offers valuable aid for the differential diagnosis of focal liver lesions, i.e. cavernous hemangioma, focal nodular hyperplasia of the liver.
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45
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Stüning D, Wiese H, Koppenhöfer E. Effects of unisotonic solutions on the ionic currents of isolated myelinated nerve fibres in the toad. Pflugers Arch 1982. [DOI: 10.1007/bf02580762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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46
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47
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Abstract
For all the 121 municipalities in Southern Norway where 60% or more of the inhabitants get water from registered water supplies, the municipal average concentration of natural fluoride in the water has been determined and the municipalities divided into three groups with fluoride level 0--0.05 mg/1, 0.06--0.10 mg/1, and 0.11--0.50 mg/1, respectively. The average, age-adjusted municipal mortality rate of cancer in the mouth and throat was then determined for each of these groups by sex. The resulting figures show that the mortality rate declines for both sexes with increasing fluoride level: For males from 4.7 deaths per 100 000 per year on the low fluoride level, to 3.9 deaths per 100 000 per year on the medium fluoride level, and to 3.1 deaths per 100 000 per year on the high fluoride level. For females the corresponding figures are 1.5, 1.3 and 0.5. Arguments to show that these figures are unbiased from different tobacco consumption habits, differences between urban and rural municipalities, and differences in population size are presented. Possible, explicatory models are discussed.
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Elbers R, Heldt HW, Schmucker P, Soboll S, Wiese H. Measurement of the ATP/ADP ratio in mitochondria and in the extramitochondrial compartment by fractionation of freeze-stopped liver tissue in non-aqueous media. Hoppe Seylers Z Physiol Chem 1974; 355:378-93. [PMID: 4154892 DOI: 10.1515/bchm2.1974.355.1.378] [Citation(s) in RCA: 106] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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49
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Elbers R, Heldt HW, Schmucker P, Wiese H. [Measurement of the ATP-ADP quotients in mitochondria and extramitochondrial space by fractionation of freeze stopped liver tissue using nonliquid media]. Hoppe Seylers Z Physiol Chem 1972; 353:702-3. [PMID: 5069274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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50
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Loeckell H, Wiese H. [Mastocytosis as a cause of generalized osteosclerosis]. Fortschr Geb Rontgenstr Nuklearmed 1967; 106:271-5. [PMID: 5626684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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