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Kosenko D, Wetzel A, Middendorf B. Fluorescence microscopic investigation of PCE superplasticiser adsorption in calcined clay blended cement. J Microsc 2024; 294:215-224. [PMID: 38556727 DOI: 10.1111/jmi.13294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 03/14/2024] [Accepted: 03/19/2024] [Indexed: 04/02/2024]
Abstract
Global efforts to minimise carbon dioxide emissions are also leading to attempts to use calcined clays (CC) as a partial substitute for cement in concrete. While the hydration mechanism of such CC blended cements is now well understood, the range of effective admixtures like polycarboxylate ethers (PCE) is limited. There are PCE types that promise relatively high effectiveness, but the mechanisms of action are not yet sufficiently understood. For a detailed understanding of the adsorption of such PCEs, spatially resolved studies of the binder were performed using a combination of fluorescence and scanning electron microscopy. In a comparison of two superplasticisers, the investigations have shown different sites of preferred adsorption in a CC blended system and the results can be correlated with flow tests and setting behaviour. The investigations have shown that a certain PCE type has a higher adsorption on CC and other components of a blended system in comparison to other types.
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Affiliation(s)
- D Kosenko
- Department of Structural Materials and Construction Chemistry, University of Kassel, Kassel, Germany
| | - A Wetzel
- Department of Structural Materials and Construction Chemistry, University of Kassel, Kassel, Germany
| | - B Middendorf
- Department of Structural Materials and Construction Chemistry, University of Kassel, Kassel, Germany
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Szlosarek R, Teichert R, Wetzel A, Fichtner A, Reuter F, Kröger M. Design and construction of a simplified, gas-driven, pressure-controlled emergency ventilator. Afr J Emerg Med 2021; 11:175-181. [PMID: 33194539 PMCID: PMC7648187 DOI: 10.1016/j.afjem.2020.09.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 08/03/2020] [Accepted: 09/23/2020] [Indexed: 12/23/2022] Open
Abstract
INTRODUCTION Due to the COVID-19 crisis or any other mass casualty situation it might be necessary to give artificial ventilation to many affected patients. Contrarily, the worldwide availability of emergency ventilators is still a shortage, especially in developing countries. METHODS Modes of artificial ventilation were compared and the most safe, easy to use, and lung protecting principle was optimized to fit all requirements of both emergency ventilation and cost-effective mass production. RESULTS The presented research results describe a simplified device for a pressure-controlled ventilation which works without electricity according to a known principle. Just pressurized gas and a patient connection is required. The device enables the control of basic ventilator parameters such as peak inspiratory pressure, positive end-expiratory pressure and the ventilation frequency. Further, the device is semiadaptive to the patient's lung stiffness and automatically maintains minute volume through frequency adjustment. The machine can be manufactured by turning, milling and drilling and needs purchased components with costs less than 100 USD. A sterilization and thus a reuse is possible. DISCUSSION The presented development does not describe a ready-to-purchase ventilator, it rather outlines a refined working principle for emergency ventilation and its easiest methods of production with a minimum of requirements. The presented research aims on providing an open-source guideline for production of an emergency ventilator using worldwide available methods and thus should inspire local researchers to do a reverse engineering and eventually to put it into operation following country-specific regulations. For long-term ventilation exceeding emergency purposes, a monitoring of alarms for disconnection and violation of desired ventilator parameters should be established. The ventilator is limited to a fixed ratio between PIP and PEEP. Moreover, the ventilation frequency depends on two parameters, which needs some training. Nevertheless, the ventilator provides basic features to enable an emergency ventilation with minimal prerequisites.
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DeMille D, Wetzel A. The Role of the Registered Dietitian in Supportive Oncology Care. J Acad Nutr Diet 2019. [DOI: 10.1016/j.jand.2019.06.065] [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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Abi Nahed R, Reynaud D, Borg AJ, Traboulsi W, Wetzel A, Sapin V, Brouillet S, Dieudonné MN, Dakouane-Giudicelli M, Benharouga M, Murthi P, Alfaidy N. NLRP7 is increased in human idiopathic fetal growth restriction and plays a critical role in trophoblast differentiation. J Mol Med (Berl) 2019; 97:355-367. [PMID: 30617930 DOI: 10.1007/s00109-018-01737-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 12/18/2018] [Accepted: 12/21/2018] [Indexed: 12/13/2022]
Abstract
Fetal growth restriction (FGR) the leading cause of perinatal mortality and morbidity is highly related to abnormal placental development, and placentas from FGR pregnancies are often characterized by increased inflammation. However, the mechanisms of FGR-associated inflammation are far from being understood. NLRP7, a member of a family of receptors involved in the innate immune responses, has been shown to be associated with gestational trophoblastic diseases. Here, we characterized the expression and the functional role of NLRP7 in the placenta and investigated its involvement in the pathogenesis of FGR. We used primary trophoblasts and placental explants that were collected during early pregnancy, and established trophoblast-derived cell lines, human placental villi, and serum samples from early pregnancy (n = 38) and from FGR (n = 40) and age-matched controls (n = 32). Our results show that NLRP7 (i) is predominantly expressed in the trophoblasts during the hypoxic period of placental development and its expression is upregulated by hypoxia and (ii) increases trophoblast proliferation ([3H]-thymidine) and controls the precocious differentiation of trophoblasts towards syncytium (syncytin 1 and 2 and β-hCG production and xCELLigence analysis) and towards invasive extravillous trophoblast (2D and 3D cultures). We have also demonstrated that NLRP7 inflammasome activation in trophoblast cells increases IL-1β, but not IL-18 secretion. In relation to the FGR, we demonstrated that major components of NLRP7 inflammasome machinery are increased and that IL-1β but not IL-18 circulating levels are increased in FGR. Altogether, our results identified NLRP7 as a critical placental factor and provided evidence for its deregulation in FGR. NLRP7 inflammasome is abundantly expressed by trophoblast cells. It is regulated by a key parameter of placental development, hypoxia. It controls trophoblast proliferation, migration, and invasion and exhibits anti-apoptotic role. NLRP7 machinery is deregulated in FGR pregnancies. KEY MESSAGES: NLRP7 inflammasome is abundantly expressed by trophoblast cells. It is regulated by a key parameter of placental development, hypoxia. It controls trophoblast proliferation, migration, and invasion and exhibits anti-apoptotic role. NLRP7 machinery is deregulated in FGR pregnancies.
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Affiliation(s)
- R Abi Nahed
- Institut National de la Santé et de la Recherche Médicale, Unité 1036, Grenoble, France.,Université Grenoble-Alpes, 38000, Grenoble, France.,Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA), Biosciences and Biotechnology Institute of Grenoble, Grenoble, France
| | - D Reynaud
- Institut National de la Santé et de la Recherche Médicale, Unité 1036, Grenoble, France.,Université Grenoble-Alpes, 38000, Grenoble, France.,Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA), Biosciences and Biotechnology Institute of Grenoble, Grenoble, France
| | - A J Borg
- Department of Medicine, School of Clinical Sciences, Monash University and the Ritchie Centre, Hudson Institute of Medical Research, Clayton, Victoria, Australia.,Department of Maternal-Fetal Medicine, Pregnancy Research Centre, The Royal Women's Hospital, Parkville, Victoria, Australia
| | - W Traboulsi
- Institut National de la Santé et de la Recherche Médicale, Unité 1036, Grenoble, France.,Université Grenoble-Alpes, 38000, Grenoble, France.,Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA), Biosciences and Biotechnology Institute of Grenoble, Grenoble, France
| | - A Wetzel
- Université Grenoble-Alpes, 38000, Grenoble, France.,Hôpital Couple-Enfant, Centre Clinique et Biologique d'Assistance Médicale à la Procréation-CECOS, Centre Hospitalier Universitaire de Grenoble, 38700, La Tronche, France
| | - V Sapin
- GReD, UMR CNRS 6293 INSERM 1103 Université Clermont Auvergne, CRBC, UFR de Médecine et des Professions Paramédicales, 63000, Clermont-Ferrand, France
| | - S Brouillet
- Institut National de la Santé et de la Recherche Médicale, Unité 1036, Grenoble, France.,Université Grenoble-Alpes, 38000, Grenoble, France.,Hôpital Couple-Enfant, Centre Clinique et Biologique d'Assistance Médicale à la Procréation-CECOS, Centre Hospitalier Universitaire de Grenoble, 38700, La Tronche, France
| | - M N Dieudonné
- GIG - EA 7404 Université de Versailles-Saint-Quentin-en-Yvelines, Université Paris-Saclay, Unité de Formation et de Recherche des Sciences de la Santé Simone Veil, Montigny-le-Bretonneux, France
| | - M Dakouane-Giudicelli
- Institut National de la Santé et de la Recherche Médicale, Unité 1179, Montigny-Le-Bretonneux, France
| | - M Benharouga
- Université Grenoble-Alpes, 38000, Grenoble, France.,Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA), Biosciences and Biotechnology Institute of Grenoble, Grenoble, France.,Unité Mixte de Recherche 5249, Laboratoire de Chimie et Biologie des Métaux, Centre National de la Recherche Scientifique, Grenoble, France
| | - P Murthi
- Department of Medicine, School of Clinical Sciences, Monash University and the Ritchie Centre, Hudson Institute of Medical Research, Clayton, Victoria, Australia.,Department of Maternal-Fetal Medicine, Pregnancy Research Centre, The Royal Women's Hospital, Parkville, Victoria, Australia.,Department of Obstetrics and Gynaecology, The University of Melbourne, Parkville, Victoria, Australia
| | - Nadia Alfaidy
- Institut National de la Santé et de la Recherche Médicale, Unité 1036, Grenoble, France. .,Université Grenoble-Alpes, 38000, Grenoble, France. .,Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA), Biosciences and Biotechnology Institute of Grenoble, Grenoble, France. .,Unité INSERM U1036, Laboratoire BCI -BIG, CEA Grenoble 17, rue des Martyrs, 38054, Grenoble cedex 9, France.
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Chan TK, Kereš D, Wetzel A, Hopkins PF, Faucher-Giguère CA, El-Badry K, Garrison-Kimmel S, Boylan-Kolchin M. The origin of ultra diffuse galaxies: stellar feedback and quenching. Mon Not R Astron Soc 2018; 478:906-925. [PMID: 30573924 PMCID: PMC6295926 DOI: 10.1093/mnras/sty1153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We test if the cosmological zoom-in simulations of isolated galaxies from the FIRE project reproduce the properties of ultra diffuse galaxies (UDGs). We show that outflows that dynamically heat galactic stars, together with a passively aging stellar population after imposed quenching, naturally reproduce the observed population of red UDGs, without the need for high spin haloes, or dynamical influence from their host cluster. We reproduce the range of surface brightness, radius, and absolute magnitude of the observed red UDGs by quenching simulated galaxies at a range of different times. They represent a mostly uniform population of dark matter-dominated dwarf galaxies with M * ~ 108 M☉, low metallicity, and a broad range of ages; the more massive the UDGs, the older they are. The most massive red UDG in our sample(M * ~ 3 × 108 M☉) requires quenching at z ~ 3 when its halo reached M h ~ 1011M☉. Our simulated UDGs form with normal stellar-to-halo ratios and match the central enclosed masses and the velocity dispersions of the observed UDGs. Enclosed masses remain largely fixed across a broad range of quenching times because the central regions of their dark matter haloes complete their growth early. If our simulated dwarfs are not quenched, they evolve into bluer low surface brightness galaxies with M/L similar to observed field dwarfs. While our simulation sample covers a limited range of formation histories and halo masses, we predict that UDG is a common, and perhaps even dominant, galaxy type around M * ~ 108 M☉, both in the field and in clusters.
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Affiliation(s)
- T K Chan
- Department of Physics, Center for Astrophysics and Space Sciences, University of California at San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - D Kereš
- Department of Physics, Center for Astrophysics and Space Sciences, University of California at San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - A Wetzel
- TAPIR, Mailcode 350-17, California Institute of Technology, Pasadena, CA 91125, USA
- The Observatories of the Carnegie Institution for Science, Pasadena, CA 91101, USA
- Department of Physics, University of California, Davis, CA 95616, USA
| | - P F Hopkins
- TAPIR, Mailcode 350-17, California Institute of Technology, Pasadena, CA 91125, USA
| | - C-A Faucher-Giguère
- Department of Physics and Astronomy and CIERA, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA
| | - K El-Badry
- Department of Astronomy and Theoretical Astrophysics Center, University of California Berkeley, Berkeley, CA 94720, USA
| | - S Garrison-Kimmel
- TAPIR, Mailcode 350-17, California Institute of Technology, Pasadena, CA 91125, USA
| | - M Boylan-Kolchin
- Department of Astronomy, The University of Texas at Austin, 2515 Speedway, Stop C1400, Austin, TX 78712-1205, USA
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Dicke B, Hoffmann A, Stanek J, Rampp MS, Grimm-Lebsanft B, Biebl F, Rukser D, Maerz B, Göries D, Naumova M, Biednov M, Neuber G, Wetzel A, Hofmann SM, Roedig P, Meents A, Bielecki J, Andreasson J, Beyerlein KR, Chapman HN, Bressler C, Zinth W, Rübhausen M, Herres-Pawlis S. Transferring the entatic-state principle to copper photochemistry. Nat Chem 2018; 10:355-362. [DOI: 10.1038/nchem.2916] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2017] [Accepted: 11/17/2017] [Indexed: 01/10/2023]
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Simon JJ, Wetzel A, Sinno MH, Skunde M, Bendszus M, Preissl H, Enck P, Herzog W, Friederich HC. Integration of homeostatic signaling and food reward processing in the human brain. JCI Insight 2017; 2:92970. [PMID: 28768906 DOI: 10.1172/jci.insight.92970] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 06/23/2017] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Food intake is guided by homeostatic needs and by the reward value of food, yet the exact relation between the two remains unclear. The aim of this study was to investigate the influence of different metabolic states and hormonal satiety signaling on responses in neural reward networks. METHODS Twenty-three healthy participants underwent functional magnetic resonance imaging while performing a task distinguishing between the anticipation and the receipt of either food- or monetary-related reward. Every participant was scanned twice in a counterbalanced fashion, both during a fasted state (after 24 hours fasting) and satiety. A functional connectivity analysis was performed to investigate the influence of satiety signaling on activation in neural reward networks. Blood samples were collected to assess hormonal satiety signaling. RESULTS Fasting was associated with sensitization of the striatal reward system to the anticipation of food reward irrespective of reward magnitude. Furthermore, during satiety, individual ghrelin levels were associated with increased neural processing during the expectation of food-related reward. CONCLUSIONS Our findings show that physiological hunger stimulates food consumption by specifically increasing neural processing during the expectation (i.e., incentive salience) but not the receipt of food-related reward. In addition, these findings suggest that ghrelin signaling influences hedonic-driven food intake by increasing neural reactivity during the expectation of food-related reward. These results provide insights into the neurobiological underpinnings of motivational processing and hedonic evaluation of food reward. TRIAL REGISTRATION ClinicalTrials.gov NCT03081585. FUNDING This work was supported by the German Competence Network on Obesity, which is funded by the German Federal Ministry of Education and Research (FKZ 01GI1122E).
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Affiliation(s)
- Joe J Simon
- Department of General Internal Medicine and Psychosomatics, Centre for Psychosocial Medicine, University Hospital Heidelberg, Heidelberg, Germany.,Department of Psychosomatic Medicine and Psychotherapy, Medical Faculty, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Anne Wetzel
- Department of General Internal Medicine and Psychosomatics, Centre for Psychosocial Medicine, University Hospital Heidelberg, Heidelberg, Germany
| | - Maria Hamze Sinno
- Department of General Internal Medicine and Psychosomatics, Centre for Psychosocial Medicine, University Hospital Heidelberg, Heidelberg, Germany
| | - Mandy Skunde
- Department of General Internal Medicine and Psychosomatics, Centre for Psychosocial Medicine, University Hospital Heidelberg, Heidelberg, Germany
| | - Martin Bendszus
- Department of Neuroradiology, University Hospital Heidelberg, Heidelberg, Germany
| | - Hubert Preissl
- Institute for Diabetes Research and Metabolic Diseases, Helmholtz Center Munich, University of Tübingen, Tübingen, Germany; German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany; Internal Medicine VI and Institute of Pharmaceutical Sciences, Department of Pharmacy and Biochemistry, Eberhard Karls Universität Tübingen, Tübingen, Germany; Institute for Diabetes and Obesity, Helmholtz Diabetes Center, Helmholtz Center Munich, University of Tübingen, Tübingen, Germany; and German Research Center for Environmental Health GmbH, Neuherberg, Germany
| | - Paul Enck
- Department of Psychosomatic Medicine and Psychotherapy, University Medical Hospital, Tübingen, Germany
| | - Wolfgang Herzog
- Department of General Internal Medicine and Psychosomatics, Centre for Psychosocial Medicine, University Hospital Heidelberg, Heidelberg, Germany
| | - Hans-Christoph Friederich
- Department of General Internal Medicine and Psychosomatics, Centre for Psychosocial Medicine, University Hospital Heidelberg, Heidelberg, Germany.,Department of Psychosomatic Medicine and Psychotherapy, Medical Faculty, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
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Zelli P, Boussat B, Wetzel A, Ronin C, Pons JC, Sergent F. [Indications of primary cesarean deliveries in a regional teaching hospital and reasonable strategies for reducing them]. ACTA ACUST UNITED AC 2016; 45:841-848. [PMID: 27593614 DOI: 10.1016/j.jgyn.2016.06.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2016] [Revised: 05/29/2016] [Accepted: 06/07/2016] [Indexed: 12/26/2022]
Abstract
OBJECTIVES To characterize the indications of primary cesarean sections and discuss the various possibilities to reduce them. MATERIALS AND METHODS Retrospective study, carried out over a period of 1 year in a university hospital having a level 3 perinatal activity, including the 499 primary cesarean sections of 2013. Two groups were defined by parity: nulliparous patients (group 1) and multiparous patients who had never previously been delivered by cesarean section (group 2). We have assessed the indication of every primary cesarean section and health status of newborns in each group. RESULTS Groups 1 and 2 respectively included 369 and 130 patients. The cesarean section rate in 2013 was 24.7% with a primary cesarean section rate of 17%. Seventy-four percent of the primary caesarean deliveries were performed on nulliparous women and 26% on multiparous (P<0.001). Sixty-three percent of the primary caesarean deliveries were performed on nulliparous women with a singleton fetus in cephalic presentation. The most common indications for primary cesarean delivery were non-reassuring fetal heart rate tracing (47.1%), failure to progress (24.8%) for which nulliparous women were more involved (29% vs. 13%, P<0.001) and fetal malpresentation (9.6%). CONCLUSION Further analysis of fetal heart rate during labor, a larger use of second line means to evaluate the fetal status during labor, using 6cm as the cut off for active labor, and encouraging vaginal operative delivery constitute the best way to decrease the primary cesarean section rate.
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Affiliation(s)
- P Zelli
- Service de gynécologie-obstétrique et médecine de la reproduction, CHU de Grenoble, CS 10217, 38043 Grenoble cedex 09, France
| | - B Boussat
- Service de santé publique et médecine sociale, centre d'investigation clinique 003, CHU de Grenoble, CS 10217, 38043 Grenoble cedex 09, France
| | - A Wetzel
- Service de gynécologie-obstétrique et médecine de la reproduction, CHU de Grenoble, CS 10217, 38043 Grenoble cedex 09, France
| | - C Ronin
- Service de gynécologie-obstétrique et médecine de la reproduction, CHU de Grenoble, CS 10217, 38043 Grenoble cedex 09, France
| | - J-C Pons
- Service de gynécologie-obstétrique et médecine de la reproduction, CHU de Grenoble, CS 10217, 38043 Grenoble cedex 09, France; Université Joseph-Fourier, BP 53, 38041 Grenoble cedex 09, France
| | - F Sergent
- Service de gynécologie-obstétrique et médecine de la reproduction, CHU de Grenoble, CS 10217, 38043 Grenoble cedex 09, France; Université Joseph-Fourier, BP 53, 38041 Grenoble cedex 09, France.
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Schilling J, Hindenburg HJ, Klare P, Wetzel A, Klare K, Orthner P. Abstract P3-14-21: Neoadjuvant chemotherapy in gynecologic oncology practices in Germany: A real life documentation. Cancer Res 2013. [DOI: 10.1158/0008-5472.sabcs13-p3-14-21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Several clinical studies have confirmed that neoadjuvant chemotherapy (NACT) is equally effective to adjuvant chemotherapy in patients with early breast cancer. The advantages of NACT include potentially improved rates of breast conserving surgery, the possibility of measuring early, in-vivo response to systemic treatment, and potentially improved outcomes for certain subgroups of high-risk breast cancer patients. The German Professional Association of Gynecologic Oncology in Practices (BNGO) is dedicated to quality-assured outpatient treatment of patients with gynecologic tumors. This includes adjuvant and neoadjuvant chemotherapy. In this analysis, we present our data on patients treated with neoadjuvant chemotherapy in BNGO practices. One of our important goals is the standardized documentation of diagnosis and treatment of our patients in order to control and assure the quality in our practices.
Methods: From January 2004 to May 2013, 18,319 breast cancer patients have been documented in the BNGO data base registry. 2,059 breast cancer patients (11%) received neoadjuvant chemotherapy. 90 BNGO practices participate in this registry on a regular basis. For documentation, the specialized ODM QuaSi®GYN online documentation system is used. The documentation assesses demographic data of individual patients and practices as well as data regarding diagnosis, treatment and outcome.
Results: Patient characteristics: Median age at diagnosis was 52 years (range 21-95 years). Most patients (30%) were 40-49 years old. 47% of patients had a T2 tumor and 81% had no distant metastases. 37% had no lymph node involvement (N0), 35% were classified as N1. 32% of patients had an ER-negative tumor, 37% were PR-negative. 57% had a negative HER-2 status, 25% were HER2-positive. Consequently, 20% of patients received trastuzumab in addition to their neoadjuvant chemotherapy. 82% of the patients were treated with a taxane-containing regimen and 84% received anthracyclines. Efficacy: Most patients (42%) achieved a partial remission (PR) after NACT, 27% had a complete remission (CR), 16% had stable disease (SD), 6% had progressive disease. 40% had breast conserving surgery of one or both breasts after NACT. 38% received other oncoplastic surgery, so a total breast conservation rate of 78% was achieved among the NACT-patients. Only 22% underwent mastecotomy of one or both breasts.
ResponseResponse% of patientsCR (Complete Remission)27%PR (Partial Remission)42%SD (Stable Disease)16%PD (Progressive Disease)6%NE (Not Evaluable)9%
52% of patients receiving neoadjuvant chemotherapy developed grade 3-4 leucopenia. The most frequent grade 3-4 non-hematologic toxicity was alopecia (9%).
Conclusions: Since 2004, 2,059 breast cancer patients in BNGO-practices received a neoadjuvant chemotherapy for early breast cancer. Most treatment schedules contained an anthracycline and /or a taxane. The objective response rate (PR and CR) was 69%. After NACT, breast conservation surgery was possible in nearly 80% of patients. This real life documentation with non- selected breast cancer patients compares favorably to results achieved in clinical trials with a selected patient population.
Citation Information: Cancer Res 2013;73(24 Suppl): Abstract nr P3-14-21.
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Affiliation(s)
- J Schilling
- BNGO e.V., Schöneiche b. Berlin, Brandenburg, Germany; Gynäkologisch Onkologische Schwerpunktpraxis, Berlin, Germany; Praxisklinik Krebsheilkunde, Berlin, Germany; Pomme-med, Munich, Bavaria, Germany
| | - H-J Hindenburg
- BNGO e.V., Schöneiche b. Berlin, Brandenburg, Germany; Gynäkologisch Onkologische Schwerpunktpraxis, Berlin, Germany; Praxisklinik Krebsheilkunde, Berlin, Germany; Pomme-med, Munich, Bavaria, Germany
| | - P Klare
- BNGO e.V., Schöneiche b. Berlin, Brandenburg, Germany; Gynäkologisch Onkologische Schwerpunktpraxis, Berlin, Germany; Praxisklinik Krebsheilkunde, Berlin, Germany; Pomme-med, Munich, Bavaria, Germany
| | - A Wetzel
- BNGO e.V., Schöneiche b. Berlin, Brandenburg, Germany; Gynäkologisch Onkologische Schwerpunktpraxis, Berlin, Germany; Praxisklinik Krebsheilkunde, Berlin, Germany; Pomme-med, Munich, Bavaria, Germany
| | - K Klare
- BNGO e.V., Schöneiche b. Berlin, Brandenburg, Germany; Gynäkologisch Onkologische Schwerpunktpraxis, Berlin, Germany; Praxisklinik Krebsheilkunde, Berlin, Germany; Pomme-med, Munich, Bavaria, Germany
| | - P Orthner
- BNGO e.V., Schöneiche b. Berlin, Brandenburg, Germany; Gynäkologisch Onkologische Schwerpunktpraxis, Berlin, Germany; Praxisklinik Krebsheilkunde, Berlin, Germany; Pomme-med, Munich, Bavaria, Germany
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Wetzel A, Hiller Y, Seipolt B, Bergert R, Rüdiger M. Kreißsaal – der optimale Start ins Leben. Klin Padiatr 2010. [DOI: 10.1055/s-0030-1261654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Tolksdorf W, Schmitt M, Wetzel A, Singer P. Simulationsstudie zur Plexus-coeliacus-Blockade anhand computertomographischer Bilder. Anasthesiol Intensivmed Notfallmed Schmerzther 2008. [DOI: 10.1055/s-2007-1003110] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Wetzel A, Werner F, Stow D. Chapter 11 Bioturbation and Biogenic Sedimentary Structures in Contourites. Developments in Sedimentology 2008. [DOI: 10.1016/s0070-4571(08)10011-5] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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Becker G, Kruse A, Tronnier J, Roepke-Brandt B, Natus A, Theissen H, Wetzel A. Rehabilitationsverlauf und Nachhaltigkeit—. Z Gerontol Geriatr 2006; 39:365-70. [PMID: 17039292 DOI: 10.1007/s00391-006-0409-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2006] [Accepted: 08/14/2006] [Indexed: 11/28/2022]
Abstract
A rehabilitation care management oriented towards the severity of the disease, the individual competence and the patient's needs essentially improves the effectivity and the sustainability of inpatient rehabilitation. The Institute of Gerontology of the University of Heidelberg is developing an assessment for elderly stroke patients to optimize placement decision by an early rehabilitation prognosis. Data concerning functional, cognitive and psychological status were collected in 267 patients participating in a postacute rehabilitation program on admission, after two weeks and on discharge and six weeks later. In this article are presented the study design and patients' characteristics during the rehabilitation process. The first assessment at admission gives important information about the sustainability of the ADL-competence after discharge. Severe stroke, premorbid ADL-competence, cognitive impairment, communication problems, depression and higher age were found to be predictors for the outcome of the rehabilitation process.
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Affiliation(s)
- G Becker
- Institut für Gerontologie der Ruprecht-Karls-Universität Heidelberg, Bergheimer Strasse 20, 69115, Heidelberg, Germany.
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Wetzel A, Wetzig T, Haustein UF, Sticherling M, Anderegg U, Simon JC, Saalbach A. Increased Neutrophil Adherence in Psoriasis: Role of the Human Endothelial Cell Receptor Thy-1 (CD90). J Invest Dermatol 2006; 126:441-52. [PMID: 16374458 DOI: 10.1038/sj.jid.5700072] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The chronic inflammatory skin disease psoriasis is characterized by prominent skin infiltration by neutrophils and microabscess formation. The adhesion of leukocytes and subsequent transmigration through the activated endothelium is one prerequisite for the accumulation of these cells in skin. In recent studies, the human Thy-1 (CD90) was characterized as an adhesion molecule on activated endothelial cells (ECs) mediating the adhesion of neutrophils via the interaction with the beta2-integrin Mac-1. Based on these novel findings, we compared the roles of Thy-1 and ICAM-1 in the adhesion of neutrophils from patients with psoriasis to activated ECs. The adhesion of peripheral blood neutrophils of patients suffering from psoriasis to Thy-1-transfected cells as well as to activated, Thy-1-expressing human dermal microvascular ECs (HDMECs) is distinctly increased in comparison to the adhesion of neutrophils from healthy controls. In contrast, adherence of psoriatic neutrophils to ICAM-1 transfectants is, if at all, only slightly enhanced compared to healthy controls. The interaction of healthy as well as psoriatic polymorphonuclear cells to Thy-1 transfectants and HDMECs was significantly inhibited by blocking Thy-1 on ECs or its receptor Mac-1 on neutrophils, indicating the importance of this interaction for the adhesion of neutrophils to activated endothelium. In conclusion, our data indicate that the adhesion of neutrophils to activated ECs mediated by Thy-1/Mac-1 interaction is an important attachment mechanism facilitating their subsequent migration into lesional psoriatic skin.
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Affiliation(s)
- Anne Wetzel
- Department of Dermatology, Venerology and Allergy, University of Leipzig, Leipzig, Germany
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Saalbach A, Wetzel A, Haustein UF, Sticherling M, Simon JC, Anderegg U. Interaction of human Thy-1 (CD 90) with the integrin αvβ3 (CD51/CD61): an important mechanism mediating melanoma cell adhesion to activated endothelium. Oncogene 2005; 24:4710-20. [PMID: 15897908 DOI: 10.1038/sj.onc.1208559] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The expression of the alphavbeta3 integrin (CD51/CD61) on human melanoma cells has been shown to be associated most closely with tumor progression and metastases formation in melanoma. Here, we demonstrated a specific interaction of the alphavbeta3 integrin on melanoma cells with the human Thy-1, an inducible cell adhesion molecule expressed on the cell surface of activated endothelial cells (EC). The interaction was shown by the binding of purified Thy-1 protein to alpha(V)beta(3) transfected cells, to alphavbeta3-expressing melanoma cells and to purified alpha(V)beta(3) integrin. Moreover, melanoma cells adhere specifically to Thy-1 transfectants via alphavbeta3 on melanoma cells showing the functional relevance of this interaction for cell adhesion. Finally, the importance of the alphavbeta3/Thy-1 interaction for the adhesion of melanoma cells to the activated endothelium was confirmed under static and flow conditions by the inhibition of melanoma cell adhesion to and transmigration across activated EC by blocking the alphavbeta3/Thy-1 interaction. In conclusion, we have identified a new pair of adhesion molecules Thy-1 and alphavbeta3 mediating the interaction of melanoma cells and activated EC. These data explain at least in part the high tumorigenicity of alphavbeta3-expressing melanoma cells and the association of alphavbeta3-positive melanoma cells with a high risk of metastasis and poor prognosis.
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Thiele A, Kronstein R, Wetzel A, Gerth A, Nieber K, Hauschildt S. Regulation of adenosine receptor subtypes during cultivation of human monocytes: role of receptors in preventing lipopolysaccharide-triggered respiratory burst. Infect Immun 2004; 72:1349-57. [PMID: 14977938 PMCID: PMC355997 DOI: 10.1128/iai.72.3.1349-1357.2004] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.8] [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: 11/20/2022] Open
Abstract
Adenosine is a potent anti-inflammatory agent that modulates the function of cells involved in the inflammatory response. Here we show that it inhibits lipopolysaccharide (LPS)-induced formation of reactive oxygen intermediates (ROI) in both freshly isolated and cultured human monocytes. Blocking of adenosine uptake and inactivation of the adenosine-degrading enzyme adenosine deaminase enhanced the inhibitory action of adenosine, indicating that both pathways regulate the extracellular adenosine concentration. Adenosine-mediated inhibition could be reversed by XAC (xanthine amine congener), an antagonist of the adenosine receptor A(2A), and MRS 1220 [N-9-chloro-2-(2-furanyl)[1, 2, 4]-triazolo[1,5-c]quinazolin-5-benzeneacetamide], an A(3) receptor antagonist, in both cell populations, while DPCPX (1,3-dipropyl-8-cyclopentylxanthine), an A(1) receptor antagonist, had no effect. Similar to what was seen with adenosine, CGS 21680, an A(2A) and A(3) receptor agonist, and IB-MECA, a nonselective A(1) and A(3) receptor agonist, dose dependently prevented ROI formation, indicating the involvement of A(3) and probably also A(2A) in the suppressive effect of adenosine. Pretreatment of monocytes with adenosine did not lead to changes in the LPS-induced increase in intracellular calcium levels ([Ca(2+)](i)). Thus, participation of [Ca(2+)](i) in the action of adenosine seems unlikely. The adenosine-mediated suppression of ROI production was found to be more pronounced when monocytes were cultured for 18 h, a time point at which changes in the mRNA expression of adenosine receptors were observed. Most prominent was the increase in the A(2A) receptor mRNA. These data demonstrate that cultivation of monocytes is accompanied by changes in the inhibitory action of adenosine mediated by A(3) and probably also the A(2A) receptor and that regulation of adenosine receptors is an integral part of the monocyte differentiation program.
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Affiliation(s)
- Andrea Thiele
- Institute of Zoology, Department of Immunobiology, University of Leipzig, D-04103 Leipzig, Germany
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Wetzel A, Chavakis T, Preissner KT, Sticherling M, Haustein UF, Anderegg U, Saalbach A. Human Thy-1 (CD90) on Activated Endothelial Cells Is a Counterreceptor for the Leukocyte Integrin Mac-1 (CD11b/CD18). J Immunol 2004; 172:3850-9. [PMID: 15004192 DOI: 10.4049/jimmunol.172.6.3850] [Citation(s) in RCA: 102] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Leukocyte recruitment in response to inflammatory signals is in part governed by interactions between endothelial cell receptors belonging to the Ig superfamily and leukocyte integrins. In our previous work, the human Ig superfamily glycoprotein Thy-1 (CD90) was identified as an activation-associated cell adhesion molecule on human dermal microvascular endothelial cells. Furthermore, the interaction of Thy-1 with a corresponding ligand on monocytes and polymorphonuclear cells was shown to be involved in the adhesion of these leukocytes to activated Thy-1-expressing endothelial cells. In this study, we have identified the specific interaction between human Thy-1 and the leukocyte integrin Mac-1 (CD11b/CD18; alphaMbeta2) both in cellular systems and in purified form. Monocytes and polymorphonuclear cells were shown to adhere to transfectants expressing human Thy-1 as well as to primary Thy-1-expressing human dermal microvascular endothelial cells. Furthermore, leukocyte adhesion to activated endothelium as well as the subsequent transendothelial migration was mediated by the interaction between Thy-1 and Mac-1. This additional pathway in leukocyte-endothelium interaction may play an important role in the regulation of leukocyte recruitment to sites of inflammation.
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Affiliation(s)
- Anne Wetzel
- Department of Dermatology, University of Leipzig, Leipzig, Germany.
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Tiedemann C, Wetzel A. [Periodontitis as manifestation of a systemic disease. A case report]. Schweiz Monatsschr Zahnmed 2002; 111:1091-102. [PMID: 11676221] [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: 02/22/2023]
Affiliation(s)
- C Tiedemann
- Klinik für Präventivzahnmedizin, Parodontologie und Kariologie (PPK) Zentrum für Zahn-, Mund- und Kieferheilkunde (ZZMK) der Universität Zürich
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Vlassis JM, Wetzel A, Caffesse RG. Controlled subperiosteal tissue expansion to facilitate GBR for the placement of endosseous dental implants. INT J PERIODONT REST 1999; 19:289-97. [PMID: 10635175] [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: 02/15/2023]
Abstract
The success of endosseous dental implants is enhanced when sufficient bone is present to stabilize the implant. If adequate bone for full coverage of the implant is not possible, then the use of guided bone regeneration to regenerate the missing bone has been shown to be a predictable solution. Defect size can often limit the amount of soft tissue available for coverage of the membrane, which is essential in obtaining an optimal result when using regenerative and osseointegrative principles. The treatment philosophy demonstrated in this case report uses controlled subperiosteal tissue expansion to facilitate the incorporation of guided bone regeneration with the subsequent placement of endosseous dental implants. This treatment modality provided a successful treatment for an otherwise compromised case.
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Affiliation(s)
- J M Vlassis
- University Hospital, State University of New York at Syracuse, USA
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Neumann H, Bode-Kirchhoff A, Madeheim A, Wetzel A. Toxicity testing of heavy metals with the Rhizobium-legume symbiosis: High sensitivity to cadmium and arsenic compounds. Environ Sci Pollut Res Int 1998; 5:28-36. [PMID: 19002625 DOI: 10.1007/bf02986371] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/1997] [Accepted: 11/03/1997] [Indexed: 05/27/2023]
Abstract
Legume root nodules are the site of biological nitrogen fixation in the Rhizobium-legume symbiosis. Nodules are structures unique to this symbiosis and they are morphologically as well as physiologically distinct from other plant organs. Organic substances affecting the macro- or microsymbionts vitality, such as PAHs (WETZEL: et al., 1991), reduce nodulation even before visible damage to the plant can be detected. We present data that the formation of nodules (nodulation) may also serve for ecotoxicological evaluation of heavy metals in different binding states. Tests were performed in petri dishes with alfalfa (lucerne) seedlings inoculated with Rhizobium meliloti. Cultivation took place in growth cabinets with carefully standardized and documented growth conditions. Data from stressed plants was recorded after 14 days of cultivation on contaminated substrate. A dose responsive decrease in nodulation was found after application of cadmium acetate, cadmium iodide, cadmium chloride, sodium salts of arsenate and arsenite, arsenic pentoxide, and lead nitrate, whereas lead acetate showed no effect up to a concentration of 3 microM. The dose response curves were used to calculate EC10, EC50 and EC90 values. EC50 values for cadmium compounds range from 1.5 to 9.5 pM. Testing different arsenic compounds results in EC50 from 2.6 to 20.1 microM. EC50 of lead nitrate is 2.2 microM. The sensitivity, reproducibility and reliability of this test system is discussed compared to established biotests.
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Affiliation(s)
- H Neumann
- FG Zellbiologie und Angewandte Botanik, Fachbereich Biologie, Philipps-Universität Marburg, Karl-von-Frisch-Strasse, D-35032, Marburg, Germany
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Wetzel A, Parniske M, Werner D. Pleiotropic effect of fluoranthene on anthocyanin synthesis and nodulation of Medicago sativa is reversed by the plant flavone luteolin. Bull Environ Contam Toxicol 1995; 54:633-639. [PMID: 7780203 DOI: 10.1007/bf00206092] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Affiliation(s)
- A Wetzel
- University of Marburg, Department of Biology, Federal Republic of Germany
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Wetzel A, Alexander T, Brandt S, Haas R, Werner D. Reduction by fluoranthene of copper and lead accumulation in Triticum aestivum L. Bull Environ Contam Toxicol 1994; 53:856-862. [PMID: 7881214 DOI: 10.1007/bf00196215] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Affiliation(s)
- A Wetzel
- University of Marburg, Department of Biology, Germany
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Wetzel A, Sandermann H. Plant biochemistry of xenobiotics: isolation and characterization of a soybean O-glucosyltransferase of DDT metabolism. Arch Biochem Biophys 1994; 314:323-8. [PMID: 7979372 DOI: 10.1006/abbi.1994.1449] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.9] [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: 01/28/2023]
Abstract
The insecticide DDT is metabolized in soybean and wheat cell cultures to the acylglucoside of 2,2-bis-(4-chlorophenyl)-acetic acid (DDA) (M. Arjmand and H. Sandermann, 1985, Pesticide Biochem. Physiol. 23, 389-397). An enzyme catalyzing the conjugation reaction has been highly purified from the soluble enzyme fraction of cultured soybean cells. After the initial ammonium sulfate fractionation, quercetin and pentachlorophenol were preferentially glucosylated. In the course of 367-fold purification, DDA became the preferred substrate. The purified enzyme was unstable. A molecular weight of approximately 50 kDa was estimated for the native enzyme (gel permeation chromatography) as well as the denatured protein (sodium dodecyl sulfate-gel electrophoresis). The isoelectric point for the enzyme was near pH 4.9. Apparent Km values of about 170 microM were determined for UDP-glucose as well as DDA. The maximal velocity was 257 microkat/kg protein, corresponding to a conjugation capacity of 855 micrograms DDA/h/g fresh weight of cells.
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Affiliation(s)
- A Wetzel
- GSF-Forschungszentrum für Umwelt und Gesundheit GmbH, Institut für Biochemische Pflanzenpathologie, Oberschleissheim, FRG
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Mrozek M, Zillmann U, Nicklas W, Kraft V, Meyer B, Sickel E, Lehr B, Wetzel A. Efficiency of air filter sets for the prevention of airborne infections in laboratory animal houses. Lab Anim 1994; 28:347-54. [PMID: 7830375 DOI: 10.1258/002367794780745155] [Citation(s) in RCA: 3] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Air filter sets (classes EU6 and EU9, or EU6 and S) were tested for their efficiency in protecting laboratory animals against potential airborne infections. Flexible-film isolators were used as a smaller scale model. In the first experiment, lasting 7 months, it was tested whether minute virus of mice (MVM) was able to penetrate the air filters between one isolator containing experimentally infected mice and another with MVM negative mice. In the second experiment we tested whether microorganisms in the incoming air were able to penetrate air filter sets. To assess this gnotobiotic mice in an isolator were monitored for 9 months for changes of their microbial flora. In both experiments a combination of EU6 and EU9 air filters proved to be sufficient to maintain the microbiological status of the animals. The same combination of medium efficiency filters (EU6 and EU9) is used on the air supply to 4 SPF-barrier units in which infections with MVM occurred repeatedly soon after the initial stocking. After a thorough disinfection no reinfection has been detected to date. This demonstrates that the relatively low efficiency of the air filters was not the cause of the repeated infection. The procedure for disinfection is described.
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Affiliation(s)
- M Mrozek
- Central Animal Laboratories, German Cancer Research Centre, Heidelberg
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Dott W, Wetzel A. [Comparison of the bacterial population of the high- and low-power stages at a water purification plant]. Zentralbl Bakteriol Mikrobiol Hyg B Umwelthyg Krankenhaushyg Arbeitshyg Prav Med 1986; 182:196-8. [PMID: 3087101] [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: 01/04/2023]
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Tolksdorf W, Schmitt M, Wetzel A, Singer P. [Celiac plexus block. Modeling study using images of computerized tomography]. Anasth Intensivther Notfallmed 1985; 20:193-9. [PMID: 3907397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
To determine possible risks of the blind approach to the coeliac plexus, a method for simulating Bridenbaugh's "blind" coeliac plexus block by CT slices and scoutviews was employed. This mathematical simulation of the blind approach to the coeliac plexus was applied to CT images of 50 patients suspected of upper abdominal tumours. This simulation revealed that the following organs would have been punctured inadvertently: Spinal nerves, liver, kidney, aorta, aortic wall, pancreas, lymphomas. The total percentage of misdirected punctures according to this simulation would have been 41%. The importance of the coeliac plexus block in patients with chronic pain is stressed. Literature studies and the results of the present study indicate that CT-guided or ultrasound-guided techniques should be preferred in coeliac plexus block whenever the facilities are available.
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Wetzel A. Bioturbation in deep-sea fine-grained sediments: influence of sediment texture, turbidite frequency and rates of environmental change. ACTA ACUST UNITED AC 1984. [DOI: 10.1144/gsl.sp.1984.015.01.37] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Gropp J, Bomhard E, Schulz V, Busch L, Wetzel A. [The determination of vitamin K activity in a biological procedure. 3. Comparative stability studies of menadione sodium bisulfite and menadione pyrimidinole bisulfite]. Z Tierphysiol Tierernahr Futtermittelkd 1975; 34:325-41. [PMID: 1241209] [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: 12/26/2022]
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Woolsey CN, Górska T, Wetzel A, Erickson TC, Earls FJ, Allman JM. Complete unilateral section of the pyramidal tract at the medullar level in Macaca mulatta. Brain Res 1972; 40:119-23. [PMID: 4624484 DOI: 10.1016/0006-8993(72)90116-3] [Citation(s) in RCA: 37] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Wetzel A. [New progress in computed tomography: The (pantomix) C.G.R.; projection of a cinematographic film]. J Radiol Electrol Arch Electr Medicale 1956; 37:89-94. [PMID: 13320454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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