34 results on '"Neumann, Ulrike"'
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2. Microalgae as a potential source of carotenoids: Comparative results of an in vitro digestion method and a feeding experiment with C57BL/6J mice
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Gille, Andrea, Neumann, Ulrike, Louis, Sandrine, Bischoff, Stephan C., and Briviba, Karlis
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- 2018
- Full Text
- View/download PDF
3. Lack of liver steatosis in germ-free mice following hypercaloric diets
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Kaden-Volynets, Valentina, Basic, Marijana, Neumann, Ulrike, Pretz, Dominik, Rings, Andreas, Bleich, André, and Bischoff, Stephan C.
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- 2019
- Full Text
- View/download PDF
4. Anti-inflammatory effects of Phaeodactylum tricornutum extracts on human blood mononuclear cells and murine macrophages
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Neumann, Ulrike, Louis, Sandrine, Gille, Andrea, Derwenskus, Felix, Schmid-Staiger, Ulrike, Briviba, Karlis, and Bischoff, Stephan C.
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- 2018
- Full Text
- View/download PDF
5. Neuropsychologische Aufgaben in der neurologischen Frührehabilitation
- Author
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Neumann, Ulrike, Tesar-Pelz, Natascha, Lehrner, Johann, editor, Pusswald, Gisela, editor, Fertl, Elisabeth, editor, Strubreither, Wilhelm, editor, and Kryspin-Exner, Ilse, editor
- Published
- 2011
- Full Text
- View/download PDF
6. Neuropsychologische Aufgaben in der neurologischen Frührehabilitation
- Author
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Neumann, Ulrike, Tesar, Natascha, Lehrner, Johann, editor, Pusswald, Gisela, editor, Fertl, Elisabeth, editor, Kryspin-Exner, Ilse, editor, and Strubreither, Wilhelm, editor
- Published
- 2006
- Full Text
- View/download PDF
7. The Microalgae Phaeodactylum tricornutum Is Well Suited as a Food with Positive Effects on the Intestinal Microbiota and the Generation of SCFA: Results from a Pre-Clinical Study
- Author
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Stiefvatter, Lena, primary, Neumann, Ulrike, additional, Rings, Andreas, additional, Frick, Konstantin, additional, Schmid-Staiger, Ulrike, additional, and Bischoff, Stephan C., additional
- Published
- 2022
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- View/download PDF
8. Transstadial Transmission and Replication Kinetics of West Nile Virus Lineage 1 in Laboratory Reared Ixodes ricinus Ticks
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Raileanu, Cristian, Raileanu, Cristian, Tauchmann, Oliver, Vasić, Ana, Neumann, Ulrike, Tews, Birke Andrea, Silaghi, Cornelia, Raileanu, Cristian, Raileanu, Cristian, Tauchmann, Oliver, Vasić, Ana, Neumann, Ulrike, Tews, Birke Andrea, and Silaghi, Cornelia
- Abstract
West Nile virus (WNV) is a mosquito-borne agent that has also been isolated from several tick species. Vector competence of Ixodes ricinus, one of the most common tick species in Europe, has been poorly investigated for WNV to date. As such, to evaluate the vector competence, laboratory reared Ixodes ricinus nymphs were in vitro fed with WNV lineage 1 infectious blood, allowed to molt, and the resulting females artificially fed to study the virus transmission. Furthermore, we studied the kinetics of WNV replication in ticks after infecting nymphs using an automatic injector. Active replication of WNV was detected in injected nymphs from day 7 post-infection until 28 dpi. In the nymphs infected by artificial feeding, the transstadial transmission of WNV was confirmed molecularly in 46.7% of males, while virus transmission during in vitro feeding of I. ricinus females originating from infected nymphs was not registered. The long persistence of WNV in I. ricinus ticks did not correlate with the transmission of the virus and it is unlikely that I. ricinus represents a competent vector. However, there is a potential reservoir role that this tick species can play, with hosts potentially acquiring the viral agent after ingesting the infected ticks.
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- 2020
9. Transstadial Transmission and Replication Kinetics of West Nile Virus Lineage 1 in Laboratory Reared Ixodes ricinus Ticks
- Author
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Răileanu, Cristian, primary, Tauchmann, Oliver, additional, Vasić, Ana, additional, Neumann, Ulrike, additional, Tews, Birke Andrea, additional, and Silaghi, Cornelia, additional
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- 2020
- Full Text
- View/download PDF
10. Fucoxanthin, A Carotenoid Derived from Phaeodactylum tricornutum Exerts Antiproliferative and Antioxidant Activities In Vitro
- Author
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Neumann, Ulrike, primary, Derwenskus, Felix, additional, Flaiz Flister, Verena, additional, Schmid-Staiger, Ulrike, additional, Hirth, Thomas, additional, and Bischoff, Stephan, additional
- Published
- 2019
- Full Text
- View/download PDF
11. Charakteristische Strukturen von Satzgefügen in den Zeitungen des 17. Jahrhunderts
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Demske-Neumann, Ulrike, primary
- Published
- 1990
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- View/download PDF
12. Bioavailability and Safety of Nutrients from the Microalgae Chlorella vulgaris, Nannochloropsis oceanica and Phaeodactylum tricornutum in C57BL/6 Mice
- Author
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Neumann, Ulrike, primary, Derwenskus, Felix, additional, Gille, Andrea, additional, Louis, Sandrine, additional, Schmid-Staiger, Ulrike, additional, Briviba, Karlis, additional, and Bischoff, Stephan, additional
- Published
- 2018
- Full Text
- View/download PDF
13. Lack of liver steatosis in germ-free mice following hypercaloric diets
- Author
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Kaden-Volynets, Valentina, primary, Basic, Marijana, additional, Neumann, Ulrike, additional, Pretz, Dominik, additional, Rings, Andreas, additional, Bleich, André, additional, and Bischoff, Stephan C., additional
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- 2018
- Full Text
- View/download PDF
14. Mikroalgen in der Humanernährung – eine sinnvolle Zukunftsperspektive?
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Neumann, Ulrike, additional and Bischoff, Stephan, additional
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- 2018
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- View/download PDF
15. Methods for assessment of innovative medical technologies during early stages of development
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Bartelmes, Marc, Neumann, Ulrike, Lühmann, Dagmar, Schönermark, Matthias P., and Hagen, Anja
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lcsh:R723-726 ,lcsh:Medical technology ,lcsh:R855-855.5 ,610 Medical sciences ,Medicine ,lcsh:Medical philosophy. Medical ethics ,Article - Abstract
Conventional Health Technology Assessment (HTA) is usually conducted at a point in time at which the development of the respective technology may no longer be influenced. By this time developers and/or purchasers may have misinvested resources. Thus the demand for Technology Assessment (TA) which incorporates appropriate methods during early development stages of a technology becomes apparent. Against this health political background, the present report describes methods for a development-accompanying assessment of innovative medical technologies. Furthermore, international research programmes set out to identify or apply such methods will be outlined. A systematic literature search as well as an extensive manual literature search are carried out in order to obtain literature and information. The greatest units of the identified methods consist of assessment concepts, decision support methods, modelling approaches and methods focusing on users and their knowledge. Additionally, several general-purpose concepts have been identified. The identified research programmes INNO-HTA and MATCH (Multidisciplinary-Assessment-of-Technology-Centre-for-Healthcare) are to be seen as pilot projects which so far have not been able to generate final results. MATCH focuses almost entirely on the incorporation of the user-perspective regarding the development of non-pharmaceutical technologies, whereas INNO-HTA is basically concerned with the identification and possible advancement of methods for the early, socially-oriented technology assessment. Most references offer only very vague descriptions of the respective method and the application of greatly differing methods seldom exceeds the character of a pilot implementation. A standardisation much less an institutionalisation of development-accompanying assessment cannot be recognized. It must be noted that there is no singular method with which development-accompanying assessment should be carried out. Instead, a technology and evaluation specific method selection seem to be necessary as medical innovations are diverse and none of the methods are exhaustive. Because of a variety of issues (e. g. ideal time of evaluation, lack of data and uncertainty of data) a development-accompanying assessment should not replace a comprehensive HTA, but rather form a possible preceding step in a multi-staged HTA-process. A final appraisal of the methods for development-accompanying assessment cannot be made based on the available sources. However, the present review may serve as a starting point for further development and application of these methods as well as further examination of the concept of development-accompanying assessment. There is a substantial need for further research concerning the application, validation and comparison of the various methods for development-accompanying assessment., GMS Health Technology Assessment; 5:Doc15; ISSN 1861-8863
- Published
- 2011
16. Methoden zur frühen entwicklungsbegleitenden Bewertung innovativer medizinischer Technologien
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Bartelmes, Marc, Neumann, Ulrike, Lühmann, Dagmar, Schönermark, Matthias P., and Hagen, Anja
- Subjects
kardiovaskuläre Erkrankungen ,Prognoseinstrumente ,Risiko ,610 Medical sciences ,Medicine ,systematische Übersicht - Abstract
Konventionelles Health Technology Assessment (HTA) erfolgt in der Regel zu einem Zeitpunkt, an dem die Entwicklung der Technologie nicht mehr direkt beeinflussbar ist. Möglicherweise sind dann Ressourcen von Seiten der Entwickler und/oder Kostenträger fehl investiert worden. Der Bedarf eines Technology Assessment (TA) mit entsprechenden Methoden in frühen Entwicklungsstadien der Technologien wird daher deutlich. Vor diesem gesundheitspolitischem Hintergrund beschreibt der vorliegende Bericht Methoden zur entwicklungsbegleitenden Bewertung von innovativen medizinischen Technologien und stellt internationale Forschungsprogramme zur Identifizierung oder Anwendung dieser Methoden dar. Zur Gewinnung von Literatur und Informationen werden eine systematische Literaturrecherche und eine ausgedehnte Handsuche durchgeführt. Die größten Untergruppen an identifizierten Methoden bilden dabei Bewertungskonzepte, Entscheidungsunterstützungsmethoden, Modellierungsansätze und Methoden, die Nutzer und deren Wissen in den Mittelpunkt stellen. Weiter wurden einige allgemein gefasste Konzepte zur entwicklungsbegleitenden Bewertung identifiziert. Die beiden identifizierten Forschungsprogramme INNO-HTA und MATCH (Multidisciplinary-Assessment-of-Technology-Centre-for-Healthcare) sind als Pilotprojekte zu sehen und haben bisher auch noch keine abschließenden Ergebnisse liefern können. MATCH fokussiert nahezu ausschließlich auf die Einbeziehung der Nutzerperspektive bei der Entwicklung von nichtmedikamentösen Technologien, während INNO-HTA sich vom Grundsatz her mit der Identifizierung und ggf. Weiterentwicklung von Methoden zur frühzeitigen - gesellschaftlich orientierten - Technologiebewertung beschäftigt. Die Methodenbeschreibungen in den Quellen sind meistens sehr vage und die Anwendung der sehr unterschiedlichen Methoden kommt selten über den Charakter einer Pilotanwendung hinaus. Eine Standardisierung geschweige denn eine Institutionalisierung von entwicklungsbegleitender Bewertung lässt sich nicht erkennen. Festzuhalten ist, dass es nicht die eine Methode gibt, mit der eine entwicklungsbegleitende Bewertung erfolgen sollte. Stattdessen scheint eine technologie- und bewertungsspezifische Methodenauswahl sinnvoll, da auch die medizinischen Innovationen verschieden sind und keine der Methoden erschöpfend ist. Eine entwicklungsbegleitende Bewertung sollte aufgrund einer Vielzahl von Problemen (z. B. optimaler Zeitpunkt der Evaluation, Datenmangel und unsichere Daten) ein umfassendes HTA nicht ersetzen, sondern ggf. in einem mehrstufigen HTA-Prozess eine vorgeschaltete Stufe darstellen. Eine abschließende Bewertung der Methoden zur entwicklungsbegleitenden Bewertung ist anhand der verfügbaren Quellen nicht möglich, allerdings mag die vorliegende Übersicht als Ausgangsbasis für weitere Methodenentwicklungen bzw. -anwendungen sowie für eine weiterführende Auseinandersetzung mit dem Konzept der frühzeitigen Bewertung dienen. Es besteht erheblicher Forschungsbedarf zu der Anwendung, der Validierung und dem Vergleich der verschiedenen Methoden zur entwicklungsbegleitenden Bewertung., Schriftenreihe Health Technology Assessment (HTA) in der Bundesrepublik Deutschland; 94; ISSN 1864-9645
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- 2009
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17. Procedures and Criteria for the regulation of innovative non-medicinal technologies into the benefit catalogue of solidly financed health care insurances
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Hagen, Anja, Neumann, Ulrike, and Schönermark, Matthias
- Subjects
lcsh:R723-726 ,lcsh:Medical technology ,lcsh:R855-855.5 ,lcsh:Medical philosophy. Medical ethics - Abstract
Because great interest in an efficient range of effective medicinal innovations and achievements has arisen, many countries have introduced procedures to regulate the adoption of innovative non-medicinal technologies into the benefit catalogue of solidly financed health care insurances. With this as a background, this report will describe procedures for the adoption of innovative non-medicinal technologies by solidly financed health care insurances in Germany, England, Australia and Switzerland. This report was commissioned by the German Agency for Health Technology Assessment at the German Institute for Medical Documentation and Information.In order to find the relevant literature and information, systematic literature research, a hand search and a written survey were carried out. All the selected documents (chosen according to defined criteria for inclusion and exclusion) were qualitatively evaluated, summarized and presented on a chart using a framework developed for this purpose. All the countries in this report require that some innovative non-medicinal technologies undergo evaluation by a central governing body. This evaluation is a prerequisite for adoption into the benefit catalogue. The process of evaluation can differ (e. g. the people and institutions concerned, the division of the synthesis of evidence and overall evaluation, processing the evidence). Similarities do exist, such as the size and composition of the governing bodies or the overreaching criteria according to which institutions must make their recommendations. This is how all the countries examined in this report determine how the benefits and effectiveness of the innovations, as well as their cost-effectiveness, can be chosen as criteria for the evaluation. Furthermore, there are many criteria which differ from country to country (social and ethical aspects, possible effects on the health system, etc.) and which are also relevant to an evaluation. The preferred types of clinical studies for these evaluations are randomized controlled trials. However, all institutions do allow for other types of evidence (e. g. expert opinion) when no other study types of a higher evidence level are available. In addition, all the countries are willing to allow unpublished or confidential information (e. g. from manufacturers) to be included in an evaluation. It is important to remember that the decisions made by the central governing bodies do not necessarily become conditions for the introduction of innovative non-medicinal technologies. There is a host of other requirements which determine how these innovations can be introduced. This means that a large number of non-medicinal technologies make it into the medical care system via these other decision-making processes. Often, these innovations are unevaluated and differ from region to region. Every country has established a system of observation and registration for medicinal products. These systems are meant to document any incidents with the innovations and to confer responsibility on certain organizations. All in all, no country has a central authority which systematically investigates the effects of newly introduced innovative non-medicinal technologies on medical care in general. However, Australia and England both carry out a review of innovations in some areas (e. g. by means of special commissions). In principle, the starting point for improving regulations of innovative non-medicinal technologies lies in the extension of transparency, the shortening of decision-making time (especially the central decision-making processes), the further development of evaluation methods, more flexibility and increased capacity in the governing bodies’ decision-making processes and also, if needed, in the creation of a single authority to act as contact for people who are interested in introducing an innovation into the benefit catalogue. More research is required, especially in the area of decentralized decision-makers and how they actually decide whether or not to introduce innovative technologies into the core care system (methods, criteria, etc.). In view of this, it would also be interesting to see how the application of innovations actually happens in practice once their adoption has been approved by the corresponding governing bodies.
- Published
- 2007
18. Neuropsychologische Aufgaben in der neurologischen Frührehabilitation
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Neumann, Ulrike, primary and Tesar, Natascha, additional
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19. Einfluss von Stickstoffmonoxid auf die sympathisch-vermittelte Stressreaktion
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Neumann, Ulrike, Ehmke, H., Gohlke, P., and Persson, P.
- Subjects
sympathetic nervous system ,Sympathisches Nervensystem ,610 Medizin ,hemodynamics ,Tyrosinhydroxylase ,Stickstoffmonoxid ,nervous system ,nitric oxide ,tyrosine hydroxylase ,ddc:610 ,33 Medizin ,Hämodynamik ,WD 4750 - Abstract
Stickstoffmonoxid (NO) spielt eine bedeutende Rolle in der Regulation des Blutdruckes, es ist ein starker Vasodilatator. Mäuse mit genetisch inaktivierter endothelialer Stickstoffmonoxidsynthase (eNOS-/-) haben einen Bluthochdruck. Mäuse mit fehlender neuronaler NO-Produktion (nNOS-/-) zeigen einen erniedrigten Blutdruck in Narkose. Im Gegensatz dazu konnte in der Literatur eine Hemmung der Katecholaminfreisetzung durch neuronal gebildetes NO gezeigt werden. Es war deshalb das Ziel dieser Studie, die Kreislaufparameter von eNOS-/- und nNOS-/- Mäusen im wachen Zustand in Ruhe und unter Stress zu untersuchen. Außerdem wurde untersucht, ob nNOS die Expression des Schlüsselenzyms der Katecholaminsynthese, Tyrosinhydroxylase (TH), hemmt und die hämodynamische Antwort auf Stress abschwächt. Acht nNOS-/-, neun eNOS-/- und neun Wildtypkontrollmäuse (WT) erhielten einen Femoralarterienkatheter. Blutdruck und Herzfrequenz sowie die Körperkerntemperatur wurden 24h nach der Operation unter wachen Bedingungen in Ruhe und bei Erhöhung der Umgebungstemperatur aufgezeichnet. Die Tyrosinhydroxylase-mRNA-Expression und -Proteingehalt der Nebennieren wurden mittles RT-PCR und Western Blot bestimmt. In Ruhe zeigten eNOS-/- und nNOS-/- Mäuse einen signifikant erhöhten mittleren und diastolischen Blutdruck im Vergleich zu Wildtypkontrollen. Während des Hitzestresses war der initiale Blutdruckabfall bei den eNOS-/- Mäusen signifikant vermindert. Der stressinduzierte Anstieg von Blutdruck und Herzfrequenz war deutlich verstärkt bei nNOS-/- Mäusen im Vergleich zu WT und eNOS-/- Mäusen. Die TH-mRNA-Expression war zehnfach erhöht bei nNOS-/- Mäusen im Vergleich zu WT. Auch der Proteingehalt der Nebennieren war dreifach erhöht in nNOS-/- im Vergleich zu WT. Diese Ergebnisse zeigen, dass endothelial gebildetes NO hauptsächlich an der thermoregulatorischen Vasodilatation der Hautgefäße beteiligt ist. Weiterhin konnte gezeigt werden, dass neuronal gebildetes NO die TH-Expression hemmt und die sympathisch vermittelte Stressantwort vermindert., Nitric oxide (NO) plays an important role in the circulatory regulation, it is a very potent vasodilator. Mice deficient of a functional endothelial NO synthase (eNOS-/-) exhibit hypertension. Mice lacking a functional neuronal NO production (nNOS-/-) were observed to be hypotensive under anaesthesia. In contrast, evidence from the literature suggests an inhibition of catecholamine release by NO derived from nNOS. Therefore it was the aim of this thesis to evaluate the circulatory parameters in eNOS-/- and nNOS-/- under conscious conditions at rest and in reponse to stress. Additionally, it was tested if nNOS inhibits the expression of the key enzyme of the catecholamine synthesis, tyrosine hydroxylase, and thereby reduces the hemodynamic responses to stressful stimuli. Eight nNOS-/-, nine eNOS-/-, and nine wild type controls (WT) were chronically instrumented with femoral artery catheters. 24h after surgery,resting blood pressure and heart rate were measured and then mice were exposed to an elevated ambient temperature. Arterial blood pressure together with heart rate and core temperature were recorded in conscious animals. Tyrosine hydroxylase mRNA expression and protein content in the adrenal gland were measured by RT-PCR and western blotting, respectively. At rest, eNOS-/- and nNOS-/- exhibited a significantly elevated mean and diastolic blood pressure compared to WT. During heat stress, the initial decrease in blood pressure seen in WT and nNOS-/- was significantly blunted in eNOS-/-. The stress-induced acceleration of heart rate and increase in blood pressure were much stronger in nNOS-/- compared to WT and eNOS-/- . TH mRNA expression was ten times larger in nNOS-/- than in WT. Correspondingly, protein content in the adrenal gland was increased threefold in nNOS-/- compared to WT. The results of this thesis indicate that endothelial derived NO predominantly mediates the thermoregulatory vasodilatation. Furthermore, it shows that neuronally derived NO inhibits TH expression and, therefore, limits the sympathetically-mediated responses to stressful stimuli, such as heat stress.
- Published
- 2003
20. Einfluss von Stickstoffmonoxid auf die sympathisch-vermittelte Stressreaktion
- Author
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Ehmke, H., Gohlke, P., Persson, P., Neumann, Ulrike, Ehmke, H., Gohlke, P., Persson, P., and Neumann, Ulrike
- Abstract
Stickstoffmonoxid (NO) spielt eine bedeutende Rolle in der Regulation des Blutdruckes, es ist ein starker Vasodilatator. Mäuse mit genetisch inaktivierter endothelialer Stickstoffmonoxidsynthase (eNOS-/-) haben einen Bluthochdruck. Mäuse mit fehlender neuronaler NO-Produktion (nNOS-/-) zeigen einen erniedrigten Blutdruck in Narkose. Im Gegensatz dazu konnte in der Literatur eine Hemmung der Katecholaminfreisetzung durch neuronal gebildetes NO gezeigt werden. Es war deshalb das Ziel dieser Studie, die Kreislaufparameter von eNOS-/- und nNOS-/- Mäusen im wachen Zustand in Ruhe und unter Stress zu untersuchen. Außerdem wurde untersucht, ob nNOS die Expression des Schlüsselenzyms der Katecholaminsynthese, Tyrosinhydroxylase (TH), hemmt und die hämodynamische Antwort auf Stress abschwächt. Acht nNOS-/-, neun eNOS-/- und neun Wildtypkontrollmäuse (WT) erhielten einen Femoralarterienkatheter. Blutdruck und Herzfrequenz sowie die Körperkerntemperatur wurden 24h nach der Operation unter wachen Bedingungen in Ruhe und bei Erhöhung der Umgebungstemperatur aufgezeichnet. Die Tyrosinhydroxylase-mRNA-Expression und -Proteingehalt der Nebennieren wurden mittles RT-PCR und Western Blot bestimmt. In Ruhe zeigten eNOS-/- und nNOS-/- Mäuse einen signifikant erhöhten mittleren und diastolischen Blutdruck im Vergleich zu Wildtypkontrollen. Während des Hitzestresses war der initiale Blutdruckabfall bei den eNOS-/- Mäusen signifikant vermindert. Der stressinduzierte Anstieg von Blutdruck und Herzfrequenz war deutlich verstärkt bei nNOS-/- Mäusen im Vergleich zu WT und eNOS-/- Mäusen. Die TH-mRNA-Expression war zehnfach erhöht bei nNOS-/- Mäusen im Vergleich zu WT. Auch der Proteingehalt der Nebennieren war dreifach erhöht in nNOS-/- im Vergleich zu WT. Diese Ergebnisse zeigen, dass endothelial gebildetes NO hauptsächlich an der thermoregulatorischen Vasodilatation der Hautgefäße beteiligt ist. Weiterhin konnte gezeigt werden, dass neuronal gebildetes NO die TH-Expression hemmt und die sym, Nitric oxide (NO) plays an important role in the circulatory regulation, it is a very potent vasodilator. Mice deficient of a functional endothelial NO synthase (eNOS-/-) exhibit hypertension. Mice lacking a functional neuronal NO production (nNOS-/-) were observed to be hypotensive under anaesthesia. In contrast, evidence from the literature suggests an inhibition of catecholamine release by NO derived from nNOS. Therefore it was the aim of this thesis to evaluate the circulatory parameters in eNOS-/- and nNOS-/- under conscious conditions at rest and in reponse to stress. Additionally, it was tested if nNOS inhibits the expression of the key enzyme of the catecholamine synthesis, tyrosine hydroxylase, and thereby reduces the hemodynamic responses to stressful stimuli. Eight nNOS-/-, nine eNOS-/-, and nine wild type controls (WT) were chronically instrumented with femoral artery catheters. 24h after surgery,resting blood pressure and heart rate were measured and then mice were exposed to an elevated ambient temperature. Arterial blood pressure together with heart rate and core temperature were recorded in conscious animals. Tyrosine hydroxylase mRNA expression and protein content in the adrenal gland were measured by RT-PCR and western blotting, respectively. At rest, eNOS-/- and nNOS-/- exhibited a significantly elevated mean and diastolic blood pressure compared to WT. During heat stress, the initial decrease in blood pressure seen in WT and nNOS-/- was significantly blunted in eNOS-/-. The stress-induced acceleration of heart rate and increase in blood pressure were much stronger in nNOS-/- compared to WT and eNOS-/- . TH mRNA expression was ten times larger in nNOS-/- than in WT. Correspondingly, protein content in the adrenal gland was increased threefold in nNOS-/- compared to WT. The results of this thesis indicate that endothelial derived NO predominantly mediates the thermoregulatory vasodilatation. Furthermore, it shows that neuronally derived NO inhibits
- Published
- 2003
21. Cholinergic Responses of Ophthalmic Arteries in M3and M5Muscarinic Acetylcholine Receptor Knockout Mice
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Gericke, Adrian, primary, Mayer, Veronique G. A., additional, Steege, Andreas, additional, Patzak, Andreas, additional, Neumann, Ulrike, additional, Grus, Franz H., additional, Joachim, Stephanie C., additional, Choritz, Lars, additional, Wess, Ju¨rgen, additional, and Pfeiffer, Norbert, additional
- Published
- 2009
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- View/download PDF
22. Regulation of expression of the retinoic acid metabolizing enzyme CYP26A1 in uteri of ovariectomized mice after treatment with ovarian steroid hormones
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Fritzsche, Britta, primary, Vermot, Julien, additional, Neumann, Ulrike, additional, Schmidt, Anja, additional, Schweigert, Florian J., additional, Dollé, Pascal, additional, and Rühl, Ralph, additional
- Published
- 2006
- Full Text
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23. Regulation of expression of the retinoic acid-synthesising enzymes retinaldehyde dehydrogenases in the uteri of ovariectomised mice after treatment with oestrogen, gestagen and their combination
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Rühl, Ralph, primary, Fritzsche, Britta, additional, Vermot, Julien, additional, Niederreither, Karen, additional, Neumann, Ulrike, additional, Schmidt, Anja, additional, Schweigert, Florian J., additional, and Dollé, Pascal, additional
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- 2006
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24. SPRACHWANDEL IM MODALEN PASSIV
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DEMSKE-NEUMANN, ULRIKE, primary
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- 1992
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25. Synthesis and structure-activity relationships of some milbemycin E analogues
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Scherkenbeck, Jürgen, primary and Wachendorff-Neumann, Ulrike, additional
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- 1991
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26. Annonacine und Annonastatin ausAnnona squamosa
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Lieb, Folker, primary, Nonfon, Maria, additional, Wachendorff-Neumann, Ulrike, additional, and Wendisch, Detlef, additional
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- 1990
- Full Text
- View/download PDF
27. Regulation of expression of the retinoic acid-synthesising enzymes retinaldehyde dehydrogenases in the uteri of ovariectomised mice after treatment with oestrogen, gestagen and their combination
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Rhl, Ralph, Fritzsche, Britta, Vermot, Julien, Niederreither, Karen, Neumann, Ulrike, Schmidt, Anja, Schweigert, Florian J., and Doll, Pascal
- Abstract
The active metabolite of vitamin A, retinoic acid (RA), plays an important role in the female reproductive system. The synthesis of RA is tightly regulated by the activity of retinaldehyde dehydrogenases (Raldh). Among these, Raldh1 and Raldh2 exhibit specific temporal and spatial expression patterns in the mouse uterus, both during the oestrous cycle and early pregnancy. In the present study, we have assessed whether oestradiol and progesterone directly influence the uterine expression of Raldh1 and Raldh2 in ovariectomised mice. We investigated the effect of gestagen (promegestone 0.3 mg kg-1 bodyweight), oestrogen (oestradiol 3 g kg-1 bodyweight) and their combination on the uterine expression of Raldh2. Expression was analysed using in situ hybridisation and quantified using real-time detection reverse transcription?polymerase chain reaction. The results show that the expression of Raldh2 is rapidly (within 1?4 h) induced in stromal cells by oestrogen, but not by gestagen, treatment, whereas combined oestrogen + gestagen treatment leads to a more prolonged (48 h) response. In contrast, oestrogen, but not progesterone, treatment downregulates (within 4?24 h) Raldh1 expression in the uterine glandular epithelium. We conclude that the uterine RA concentrations are regulated by oestrogens via an effect on the expression of the Raldh synthesising enzymes. Such a regulation is consistent with the natural fluctuations of Raldh expression during the oestrous cycle, early pregnancy and blastocyst implantation.
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- 2006
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28. THIAZOLYLPIPERIDINE DERIVATES AS FUNGICIDES
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BAYER CROPSCIENCE AG, CRISTAU PIERRE, RAHN NICOLA, TSUCHIYA TOMOKI, WACHENDORFF-NEUMANN ULRIKE, and BENTING JUERGEN
- Abstract
The invention relates to thiazolylpiperidine derivates of the formula (I), where the symbols A, G, Y, n, R1, R2, R3, R4, and R5 have the meanings given in the description, and to agrochemically active salts thereof, and the use thereof for treating plant pathenogenic fungi, and to the method for producing compounds of the formula (I).
29. Annonacine und Annonastatin aus Annona squamosa
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Lieb, Folker, Nonfon, Maria, Wachendorff-Neumann, Ulrike, and Wendisch, Detlef
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- 1990
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30. The Performance of Scientific Search Engines: An Experiment on the Basis of Google Scholar.
- Author
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Machill, Marcel, Beiler, Markus, and Neumann, Ulrike
- Subjects
WEB search engines ,COMPUTER software ,INFORMATION retrieval ,ONLINE information services ,TELEVISION broadcasting - Abstract
The scientific search engine Google Scholar promises its users rapid, comprehensive and high-quality access to scientific publications from various academic disciplines. The aim is to facilitate the frequently tedious and unsatisfactory search for specialist articles, papers, doctoral theses, studies, abstracts or books. An experiment with a single-factor design was performed in order to examine empirically the performance of Google Scholar in the search for scientific information. Specifically, the research topics related to the search for information, firstly according to the quality criteria for television programmes established by Winfried Schatz and Heribert Schulz (1992) and, secondly, to the media performance approach devised by Denis McQuail (1992). In the case of the three-level independent variable the general search engine Google was selected as one of the two control conditions alongside the experimental condition. Traditional research in a specialist library of relevance to the two study topics, including the search in the electronic library catalogue, served as the second control condition. The results of the experiment clearly indicate greater success using the general search engine Google in comparison with the specialized offering for scientific searches, Google Scholar, and the specialist library. It must be stated that the performance of Google Scholar at the time of the study is still unsatisfactory. This state of affairs is attributable to the index which is incomplete and unsuited to scientific research in many disciplines, to limitations placed on the result lists due to cost-incurring and password protected documents, to non-utilizable search results (citations in other publications, books that are only available offline in libraries) and to the technically imperfect operating or search-limitation options. ..PAT.-Unpublished Manuscript [ABSTRACT FROM AUTHOR]
- Published
- 2007
31. Methods for assessment of innovative medical technologies during early stages of development.
- Author
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Bartelmes M, Neumann U, Lühmann D, Schönermark MP, and Hagen A
- Abstract
Conventional Health Technology Assessment (HTA) is usually conducted at a point in time at which the development of the respective technology may no longer be influenced. By this time developers and/or purchasers may have misinvested resources. Thus the demand for Technology Assessment (TA) which incorporates appropriate methods during early development stages of a technology becomes apparent. Against this health political background, the present report describes methods for a development-accompanying assessment of innovative medical technologies. Furthermore, international research programmes set out to identify or apply such methods will be outlined. A systematic literature search as well as an extensive manual literature search are carried out in order to obtain literature and information. The greatest units of the identified methods consist of assessment concepts, decision support methods, modelling approaches and methods focusing on users and their knowledge. Additionally, several general-purpose concepts have been identified. The identified research programmes INNO-HTA and MATCH (Multidisciplinary-Assessment-of-Technology-Centre-for-Healthcare) are to be seen as pilot projects which so far have not been able to generate final results. MATCH focuses almost entirely on the incorporation of the user-perspective regarding the development of non-pharmaceutical technologies, whereas INNO-HTA is basically concerned with the identification and possible advancement of methods for the early, socially-oriented technology assessment. Most references offer only very vague descriptions of the respective method and the application of greatly differing methods seldom exceeds the character of a pilot implementation. A standardisation much less an institutionalisation of development-accompanying assessment cannot be recognized. It must be noted that there is no singular method with which development-accompanying assessment should be carried out. Instead, a technology and evaluation specific method selection seem to be necessary as medical innovations are diverse and none of the methods are exhaustive. Because of a variety of issues (e. g. ideal time of evaluation, lack of data and uncertainty of data) a development-accompanying assessment should not replace a comprehensive HTA, but rather form a possible preceding step in a multi-staged HTA-process. A final appraisal of the methods for development-accompanying assessment cannot be made based on the available sources. However, the present review may serve as a starting point for further development and application of these methods as well as further examination of the concept of development-accompanying assessment. There is a substantial need for further research concerning the application, validation and comparison of the various methods for development-accompanying assessment.
- Published
- 2009
- Full Text
- View/download PDF
32. Cholinergic responses of ophthalmic arteries in M3 and M5 muscarinic acetylcholine receptor knockout mice.
- Author
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Gericke A, Mayer VG, Steege A, Patzak A, Neumann U, Grus FH, Joachim SC, Choritz L, Wess J, and Pfeiffer N
- Subjects
- Adrenergic alpha-Agonists pharmacology, Animals, Bradykinin pharmacology, Carbachol pharmacology, Gene Expression, Male, Mice, Mice, Knockout, Nitroprusside pharmacology, Ophthalmic Artery drug effects, Phenylephrine pharmacology, RNA, Messenger metabolism, Reverse Transcriptase Polymerase Chain Reaction, Vasodilation physiology, Vasodilator Agents pharmacology, Video Recording, Acetylcholine pharmacology, Cholinergic Agents pharmacology, Ophthalmic Artery physiology, Receptor, Muscarinic M3 physiology, Receptor, Muscarinic M5 physiology
- Abstract
Purpose: To determine the functional role of M(3) and M(5) muscarinic acetylcholine receptor subtypes in ophthalmic arteries using gene-targeted mice., Methods: Muscarinic receptor gene expression was quantified in murine ophthalmic arteries using real-time PCR. To test the functional relevance of M(3) and M(5) receptors, ophthalmic arteries from mice deficient in either subtype (M3R(-/-), M5R(-/-), respectively) and wild-type controls were isolated, cannulated with micropipettes, and pressurized. Changes in luminal vessel diameter in response to muscarinic and nonmuscarinic receptor agonists were measured by video microscopy., Results: With the use of real-time PCR, all five muscarinic receptor subtypes were detected in ophthalmic arteries. However, mRNA levels of M(1), M(3), and M(5) receptors were higher than those of M(2) and M(4) receptors. In functional studies, after preconstriction with phenylephrine, acetylcholine and carbachol produced concentration-dependent dilations of ophthalmic arteries that were similar in M5R(-/-) and wild-type mice. Strikingly, cholinergic dilation of ophthalmic arteries was almost completely abolished in M3R(-/-) mice. Deletion of either M(3) or M(5) receptor did not affect responses to nonmuscarinic vasodilators such as bradykinin or nitroprusside., Conclusions: These findings provide the first evidence that M(3) receptors are critically involved in cholinergic regulation of diameter in murine ophthalmic arteries.
- Published
- 2009
- Full Text
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33. Procedures and Criteria for the regulation of innovative non-medicinal technologies into the benefit catalogue of solidly financed health care insurances.
- Author
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Neumann U, Hagen A, and Schönermark M
- Abstract
Because great interest in an efficient range of effective medicinal innovations and achievements has arisen, many countries have introduced procedures to regulate the adoption of innovative non-medicinal technologies into the benefit catalogue of solidly financed health care insurances. With this as a background, this report will describe procedures for the adoption of innovative non-medicinal technologies by solidly financed health care insurances in Germany, England, Australia and Switzerland. This report was commissioned by the German Agency for Health Technology Assessment at the German Institute for Medical Documentation and Information.In order to find the relevant literature and information, systematic literature research, a hand search and a written survey were carried out. All the selected documents (chosen according to defined criteria for inclusion and exclusion) were qualitatively evaluated, summarized and presented on a chart using a framework developed for this purpose. All the countries in this report require that some innovative non-medicinal technologies undergo evaluation by a central governing body. This evaluation is a prerequisite for adoption into the benefit catalogue. The process of evaluation can differ (e. g. the people and institutions concerned, the division of the synthesis of evidence and overall evaluation, processing the evidence). Similarities do exist, such as the size and composition of the governing bodies or the overreaching criteria according to which institutions must make their recommendations. This is how all the countries examined in this report determine how the benefits and effectiveness of the innovations, as well as their cost-effectiveness, can be chosen as criteria for the evaluation. Furthermore, there are many criteria which differ from country to country (social and ethical aspects, possible effects on the health system, etc.) and which are also relevant to an evaluation. The preferred types of clinical studies for these evaluations are randomized controlled trials. However, all institutions do allow for other types of evidence (e. g. expert opinion) when no other study types of a higher evidence level are available. In addition, all the countries are willing to allow unpublished or confidential information (e. g. from manufacturers) to be included in an evaluation. It is important to remember that the decisions made by the central governing bodies do not necessarily become conditions for the introduction of innovative non-medicinal technologies. There is a host of other requirements which determine how these innovations can be introduced. This means that a large number of non-medicinal technologies make it into the medical care system via these other decision-making processes. Often, these innovations are unevaluated and differ from region to region. Every country has established a system of observation and registration for medicinal products. These systems are meant to document any incidents with the innovations and to confer responsibility on certain organizations. All in all, no country has a central authority which systematically investigates the effects of newly introduced innovative non-medicinal technologies on medical care in general. However, Australia and England both carry out a review of innovations in some areas (e. g. by means of special commissions). In principle, the starting point for improving regulations of innovative non-medicinal technologies lies in the extension of transparency, the shortening of decision-making time (especially the central decision-making processes), the further development of evaluation methods, more flexibility and increased capacity in the governing bodies' decision-making processes and also, if needed, in the creation of a single authority to act as contact for people who are interested in introducing an innovation into the benefit catalogue.More research is required, especially in the area of decentralized decision-makers and how they actually decide whether or not to introduce innovative technologies into the core care system (methods, criteria, etc.). In view of this, it would also be interesting to see how the application of innovations actually happens in practice once their adoption has been approved by the corresponding governing bodies.
- Published
- 2008
34. Regulation of expression of the retinoic acid metabolizing enzyme CYP26A1 in uteri of ovariectomized mice after treatment with ovarian steroid hormones.
- Author
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Fritzsche B, Vermot J, Neumann U, Schmidt A, Schweigert FJ, Dollé P, and Rühl R
- Subjects
- Animals, Cytochrome P-450 Enzyme System metabolism, Endometrium cytology, Endometrium drug effects, Endometrium enzymology, Epithelial Cells cytology, Epithelial Cells enzymology, Estrogens pharmacology, Female, Gene Expression Regulation, Enzymologic, In Situ Hybridization, Mice, Ovariectomy, Pregnancy, Progesterone pharmacology, RNA, Messenger genetics, Retinoic Acid 4-Hydroxylase, Reverse Transcriptase Polymerase Chain Reaction, Transcription, Genetic, Tretinoin metabolism, Uterus cytology, Uterus drug effects, Cytochrome P-450 Enzyme System genetics, Uterus enzymology
- Abstract
The retinoic acid (RA) synthesizing enzymes, retinaldehyde dehydrogenases (RALDH), are expressed in specific spatial and temporal patterns in uterine tissues during estrous cycle and early pregnancy in mice. Expression of RALDH1 and 2 has been shown to be induced by estrogen treatment within the uterus. In this study, we determined the influence of progesterone and 17-ss-estradiol on the uterine expression of the RA-metabolizing enzyme CYP26A1 after specific time intervals (1, 4, 24, and 48 hr after treatment of ovariectomized mice). In a following experiment, we investigated the influence of gestagen (promegestone 0.3 mg/kg body weight), estrogen (estradiol 3 microg/kg), their combination, as well as the antagonizing anti-progesterone hormone (RU 486 10 mg/kg) on the uterine expression of CYP26A1. Expression of CYP26A1 was localized using in situ hybridization and quantified using RT-PCR. CYP26A1 mRNA expression was strongly--although transiently--induced in uterine endometrial epithelial and glandular cells after administration of gestagen or the combination of gestagen + estrogen, but not by estrogen alone. These observations were confirmed by semi-quantitative RT-PCR experiments on whole uteri. Thus, we show that the expression of CYP26A1 in endometrial epithelial cells is regulated by progesterone and not significantly influenced by co-administration of estrogen. These data indicate an additional level of hormonal control of endogenous RA levels in the mouse uterus, where its synthesis would rely on estrogen-dependent expression of RALDH enzymes, whereas its active metabolism would be triggered by progesterone-induced CYP26A1 expression.
- Published
- 2007
- Full Text
- View/download PDF
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