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Hämmerle G, Ascher S, Gebhardt L. Positive effects of cold atmospheric plasma on pH in wounds: a pilot study. J Wound Care 2023; 32:530-536. [PMID: 37682787 DOI: 10.12968/jowc.2023.32.9.530] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/10/2023]
Abstract
OBJECTIVE Cold atmospheric plasma (CAP) is a promising new option for the treatment of hard-to-heal (chronic) wounds. The aim of this study was to observe the effect of CAP on wound pH, as a correlation between the pH of a wound and its healing tendency has been established in the literature. METHOD Patients with hard-to-heal wounds were treated with CAP in addition to standard treatment. Treatment was performed with the aid of a small, mobile plasma device, which was used for one minute at a time during dressing changes. The pH value, wound size, and other parameters, such as exudate and signs of infection, were recorded for each treatment. RESULTS A total of 10 patients took part in the study. During the observation period, there was a significant reduction in pH from a markedly alkaline pH of 9.6 to a neutral pH of 7. This was accompanied by a marked reduction in wound size by an average of 76% with seven applications of CAP within 28 days. The evaluation of tissue granulation, exudate and signs of infection showed a positive trend. CONCLUSION The number of patients in the present study is not sufficient to prove the relationship between the pH value of the wound and the treatment with CAP. However, there are clear indications that the positive effects of CAP on wound healing, which are recognised in several publications, are also due to its influence on wound pH value.
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Bayer F, Ascher S, Kiouptsi K, Kittner JM, Stauber RH, Reinhardt C. Colonization with Altered Schaedler Flora Impacts Leukocyte Adhesion in Mesenteric Ischemia-Reperfusion Injury. Microorganisms 2021; 9:1601. [PMID: 34442681 PMCID: PMC8401286 DOI: 10.3390/microorganisms9081601] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/23/2021] [Accepted: 07/26/2021] [Indexed: 12/12/2022] Open
Abstract
The microbiota impacts mesenteric ischemia-reperfusion injury, aggravating the interaction of leukocytes with endothelial cells in mesenteric venules. The role of defined gut microbiomes in this life-threatening pathology is unknown. To investigate how a defined model microbiome affects the adhesion of leukocytes in mesenteric ischemia-reperfusion, we took advantage of gnotobiotic isolator technology and transferred altered Schaedler flora (ASF) from C3H/HeNTac to germ-free C57BL/6J mice. We were able to detect all eight bacterial taxa of ASF in fecal samples of colonized C57BL/6J mice by PCR. Applying qRT-PCR for quantification of species-specific 16S rDNA sequences of ASF bacteria, we found a major shift in the abundance of ASF 500, which was greater in C57BL/6J mice relative to the C3H/HeNTac founder breeding pair. Using high-speed epifluorescence intravital microscopy to visualize the venules of the small bowel mesentery, we found that gnotobiotic ASF-colonized mice showed reduced leukocyte adherence, both pre- and post-ischemia. Relative to germ-free mice, the counts of adhering leukocytes were increased pre-ischemia but did not significantly increase in ASF-colonized mice in the post-ischemic state. Collectively, our results suggest a protective role of the minimal microbial consortium ASF in mesenteric ischemia-reperfusion injury.
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Affiliation(s)
- Franziska Bayer
- Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Johannes Gutenberg-University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; (F.B.); (S.A.); (K.K.)
| | - Stefanie Ascher
- Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Johannes Gutenberg-University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; (F.B.); (S.A.); (K.K.)
- Department of Chemistry, Biochemistry, Johannes Gutenberg-University Mainz, 55128 Mainz, Germany
| | - Klytaimnistra Kiouptsi
- Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Johannes Gutenberg-University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; (F.B.); (S.A.); (K.K.)
| | - Jens M. Kittner
- Department of Medicine, University Medical Center Mainz, Johannes Gutenberg-University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany;
- Diakonie Klinikum Neunkirchen, Brunnenstraße 20, 66538 Neunkirchen, Germany
| | - Roland H. Stauber
- Department of Nanobiomedicine/ENT, University Medical Center Mainz, Johannes Gutenberg-University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany;
| | - Christoph Reinhardt
- Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Johannes Gutenberg-University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; (F.B.); (S.A.); (K.K.)
- German Center for Cardiovascular Research (DZHK), Partner Site RheinMain, 55131 Mainz, Germany
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Ascher S, Wilms E, Pontarollo G, Kiouptsi K, Malinarich F, Kittner JM, Bosmann M, Jurk K, Reinhardt C. Response by Ascher et al to Letter Regarding Article, "Gut Microbiota Restricts NETosis in Acute Mesenteric Ischemia-Reperfusion Injury". Arterioscler Thromb Vasc Biol 2020; 41:e74-e75. [PMID: 33356371 DOI: 10.1161/atvbaha.120.315541] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Stefanie Ascher
- Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg-University of Mainz (S.A., E.W., G.P., K.K., F.M., M.B., K.J., C.R.), Johannes Gutenberg University of Mainz, Germany.,Department of Chemistry, Biochemistry (S.A.), Johannes Gutenberg University of Mainz, Germany
| | - Eivor Wilms
- Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg-University of Mainz (S.A., E.W., G.P., K.K., F.M., M.B., K.J., C.R.), Johannes Gutenberg University of Mainz, Germany
| | - Giulia Pontarollo
- Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg-University of Mainz (S.A., E.W., G.P., K.K., F.M., M.B., K.J., C.R.), Johannes Gutenberg University of Mainz, Germany
| | - Klytaimnistra Kiouptsi
- Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg-University of Mainz (S.A., E.W., G.P., K.K., F.M., M.B., K.J., C.R.), Johannes Gutenberg University of Mainz, Germany
| | - Frano Malinarich
- Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg-University of Mainz (S.A., E.W., G.P., K.K., F.M., M.B., K.J., C.R.), Johannes Gutenberg University of Mainz, Germany
| | - Jens M Kittner
- First Department of Medicine, University Medical Center Mainz (J.M.K.), Johannes Gutenberg University of Mainz, Germany
| | - Markus Bosmann
- Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg-University of Mainz (S.A., E.W., G.P., K.K., F.M., M.B., K.J., C.R.), Johannes Gutenberg University of Mainz, Germany.,Department of Medicine, Pulmonary Center, Boston University School of Medicine, MA (M.B.)
| | - Kerstin Jurk
- Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg-University of Mainz (S.A., E.W., G.P., K.K., F.M., M.B., K.J., C.R.), Johannes Gutenberg University of Mainz, Germany.,German Center for Cardiovascular Research, Partner Site RheinMain, Mainz, Germany (K.J., C.R.)
| | - Christoph Reinhardt
- Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg-University of Mainz (S.A., E.W., G.P., K.K., F.M., M.B., K.J., C.R.), Johannes Gutenberg University of Mainz, Germany.,German Center for Cardiovascular Research, Partner Site RheinMain, Mainz, Germany (K.J., C.R.)
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Ballesteros I, Rubio-Ponce A, Genua M, Lusito E, Kwok I, Fernández-Calvo G, Khoyratty TE, van Grinsven E, González-Hernández S, Nicolás-Ávila JÁ, Vicanolo T, Maccataio A, Benguría A, Li JL, Adrover JM, Aroca-Crevillen A, Quintana JA, Martín-Salamanca S, Mayo F, Ascher S, Barbiera G, Soehnlein O, Gunzer M, Ginhoux F, Sánchez-Cabo F, Nistal-Villán E, Schulz C, Dopazo A, Reinhardt C, Udalova IA, Ng LG, Ostuni R, Hidalgo A. Co-option of Neutrophil Fates by Tissue Environments. Cell 2020; 183:1282-1297.e18. [PMID: 33098771 DOI: 10.1016/j.cell.2020.10.003] [Citation(s) in RCA: 221] [Impact Index Per Article: 55.3] [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: 01/10/2020] [Revised: 08/10/2020] [Accepted: 10/01/2020] [Indexed: 02/09/2023]
Abstract
Classically considered short-lived and purely defensive leukocytes, neutrophils are unique in their fast and moldable response to stimulation. This plastic behavior may underlie variable and even antagonistic functions during inflammation or cancer, yet the full spectrum of neutrophil properties as they enter healthy tissues remains unexplored. Using a new model to track neutrophil fates, we found short but variable lifetimes across multiple tissues. Through analysis of the receptor, transcriptional, and chromatin accessibility landscapes, we identify varying neutrophil states and assign non-canonical functions, including vascular repair and hematopoietic homeostasis. Accordingly, depletion of neutrophils compromised angiogenesis during early age, genotoxic injury, and viral infection, and impaired hematopoietic recovery after irradiation. Neutrophils acquired these properties in target tissues, a process that, in the lungs, occurred in CXCL12-rich areas and relied on CXCR4. Our results reveal that tissues co-opt neutrophils en route for elimination to induce programs that support their physiological demands.
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Affiliation(s)
- Iván Ballesteros
- Area of Cell & Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid 28029, Spain.
| | - Andrea Rubio-Ponce
- Area of Cell & Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid 28029, Spain; Bioinformatics Unit, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid 28029, Spain
| | - Marco Genua
- Vita-Salute San Raffaele University and San Raffaele-Telethon Institute for Gene Therapy (SR-Tiget), IRCCS San Raffaele Scientific Institute, Milan 20132, Italy
| | - Eleonora Lusito
- Vita-Salute San Raffaele University and San Raffaele-Telethon Institute for Gene Therapy (SR-Tiget), IRCCS San Raffaele Scientific Institute, Milan 20132, Italy
| | - Immanuel Kwok
- Singapore Immunology Nework (SIgN), A(∗)STAR, Biopolis, Singapore 138648, Singapore
| | - Gabriel Fernández-Calvo
- Department of Mathematics & MOLAB-Mathematical Oncology Laboratory, University of Castilla-La Mancha, Ciudad Real 13001, Spain
| | - Tariq E Khoyratty
- Kennedy Institute of Rheumatology, University of Oxford, OX3 7FY, UK
| | | | - Sara González-Hernández
- Area of Cell & Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid 28029, Spain
| | - José Ángel Nicolás-Ávila
- Area of Cell & Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid 28029, Spain
| | - Tommaso Vicanolo
- Area of Cell & Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid 28029, Spain
| | - Antonio Maccataio
- Area of Cell & Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid 28029, Spain
| | - Alberto Benguría
- Genomic Unit, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid 28029, Spain
| | - Jackson LiangYao Li
- Area of Cell & Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid 28029, Spain; Singapore Immunology Nework (SIgN), A(∗)STAR, Biopolis, Singapore 138648, Singapore
| | - José M Adrover
- Area of Cell & Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid 28029, Spain
| | - Alejandra Aroca-Crevillen
- Area of Cell & Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid 28029, Spain
| | - Juan A Quintana
- Area of Cell & Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid 28029, Spain
| | - Sandra Martín-Salamanca
- Area of Cell & Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid 28029, Spain
| | - Francisco Mayo
- Area of Cell & Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid 28029, Spain
| | - Stefanie Ascher
- Institute for Pharmacy & Biochemistry, Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 30, Mainz 55128, Germany
| | - Giulia Barbiera
- Vita-Salute San Raffaele University and San Raffaele-Telethon Institute for Gene Therapy (SR-Tiget), IRCCS San Raffaele Scientific Institute, Milan 20132, Italy
| | - Oliver Soehnlein
- Institute for Cardiovascular Prevention (IPEK), Ludwig-Maximillians-Universitat, Munich 80802, Germany
| | - Matthias Gunzer
- Institute for Experimental Immunology and Imaging, University Hospital, University Duisburg-Essen, Essen 445141, Germany
| | - Florent Ginhoux
- Singapore Immunology Nework (SIgN), A(∗)STAR, Biopolis, Singapore 138648, Singapore
| | - Fátima Sánchez-Cabo
- Bioinformatics Unit, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid 28029, Spain
| | - Estanislao Nistal-Villán
- Microbiology Section, Department Pharmacological and Health Sciences, Facultad de Farmacia, Universidad CEU San Pablo, Madrid 28668, Spain
| | - Christian Schulz
- Medizinische Klinik und Poliklinik I, LMU Klinikum, Ludwig-Maximilians-Universität, Munich 80336, Germany; DZHK (German Centre for Cardiovascular Research), Munich 80802, Germany
| | - Ana Dopazo
- Genomic Unit, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid 28029, Spain
| | - Christoph Reinhardt
- Center for Thrombosis and Hemostasis Mainz (CTH), University Medical Center Mainz, Johannes Gutenberg University of Mainz, Mainz 55131, Germany
| | - Irina A Udalova
- Kennedy Institute of Rheumatology, University of Oxford, OX3 7FY, UK
| | - Lai Guan Ng
- Singapore Immunology Nework (SIgN), A(∗)STAR, Biopolis, Singapore 138648, Singapore
| | - Renato Ostuni
- Vita-Salute San Raffaele University and San Raffaele-Telethon Institute for Gene Therapy (SR-Tiget), IRCCS San Raffaele Scientific Institute, Milan 20132, Italy
| | - Andrés Hidalgo
- Area of Cell & Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid 28029, Spain; Institute for Cardiovascular Prevention (IPEK), Ludwig-Maximillians-Universitat, Munich 80802, Germany.
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Ascher S, Wilms E, Pontarollo G, Formes H, Bayer F, Müller M, Malinarich F, Grill A, Bosmann M, Saffarzadeh M, Brandão I, Groß K, Kiouptsi K, Kittner JM, Lackner KJ, Jurk K, Reinhardt C. Gut Microbiota Restricts NETosis in Acute Mesenteric Ischemia-Reperfusion Injury. Arterioscler Thromb Vasc Biol 2020; 40:2279-2292. [PMID: 32611241 DOI: 10.1161/atvbaha.120.314491] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
OBJECTIVE Recruitment of neutrophils and formation of neutrophil extracellular traps (NETs) contribute to lethality in acute mesenteric infarction. To study the impact of the gut microbiota in acute mesenteric infarction, we used gnotobiotic mouse models to investigate whether gut commensals prime the reactivity of neutrophils towards formation of neutrophil extracellular traps (NETosis). Approach and Results: We applied a mesenteric ischemia-reperfusion (I/R) injury model to germ-free (GF) and colonized C57BL/6J mice. By intravital imaging, we quantified leukocyte adherence and NET formation in I/R-injured mesenteric venules. Colonization with gut microbiota or monocolonization with Escherichia coli augmented the adhesion of leukocytes, which was dependent on the TLR4 (Toll-like receptor-4)/TRIF (TIR-domain-containing adapter-inducing interferon-β) pathway. Although neutrophil accumulation was decreased in I/R-injured venules of GF mice, NETosis following I/R injury was significantly enhanced compared with conventionally raised mice or mice colonized with the minimal microbial consortium altered Schaedler flora. Also ex vivo, neutrophils from GF and antibiotic-treated mice showed increased LPS (lipopolysaccharide)-induced NETosis. Enhanced TLR4 signaling in GF neutrophils was due to elevated TLR4 expression and augmented IRF3 (interferon regulatory factor-3) phosphorylation. Likewise, neutrophils from antibiotic-treated conventionally raised mice had increased NET formation before and after ischemia. Increased NETosis in I/R injury was abolished in conventionally raised mice deficient in the TLR adaptor TRIF. In support of the desensitizing influence of enteric LPS, treatment of GF mice with LPS via drinking water diminished LPS-induced NETosis in vitro and in the mesenteric I/R injury model. CONCLUSIONS Collectively, our results identified that the gut microbiota suppresses NETing neutrophil hyperreactivity in mesenteric I/R injury, while ensuring immunovigilance by enhancing neutrophil recruitment.
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Affiliation(s)
- Stefanie Ascher
- From the Center for Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg University of Mainz (JGU), Germany (S.A., E.W., G.P., H.F., F.B., M.M., F.M., A.G., M.B., M.S., I.B., K.G., K.K., K.J., C.R.).,Institute for Pharmacy & Biochemistry, Johannes Gutenberg University of Mainz, Germany (S.A.)
| | - Eivor Wilms
- From the Center for Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg University of Mainz (JGU), Germany (S.A., E.W., G.P., H.F., F.B., M.M., F.M., A.G., M.B., M.S., I.B., K.G., K.K., K.J., C.R.)
| | - Giulia Pontarollo
- From the Center for Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg University of Mainz (JGU), Germany (S.A., E.W., G.P., H.F., F.B., M.M., F.M., A.G., M.B., M.S., I.B., K.G., K.K., K.J., C.R.)
| | - Henning Formes
- From the Center for Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg University of Mainz (JGU), Germany (S.A., E.W., G.P., H.F., F.B., M.M., F.M., A.G., M.B., M.S., I.B., K.G., K.K., K.J., C.R.)
| | - Franziska Bayer
- From the Center for Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg University of Mainz (JGU), Germany (S.A., E.W., G.P., H.F., F.B., M.M., F.M., A.G., M.B., M.S., I.B., K.G., K.K., K.J., C.R.)
| | - Maria Müller
- From the Center for Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg University of Mainz (JGU), Germany (S.A., E.W., G.P., H.F., F.B., M.M., F.M., A.G., M.B., M.S., I.B., K.G., K.K., K.J., C.R.)
| | - Frano Malinarich
- From the Center for Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg University of Mainz (JGU), Germany (S.A., E.W., G.P., H.F., F.B., M.M., F.M., A.G., M.B., M.S., I.B., K.G., K.K., K.J., C.R.)
| | - Alexandra Grill
- From the Center for Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg University of Mainz (JGU), Germany (S.A., E.W., G.P., H.F., F.B., M.M., F.M., A.G., M.B., M.S., I.B., K.G., K.K., K.J., C.R.).,German Center for Cardiovascular Research, Partner Site RheinMain, Mainz, Germany (A.G., C.R.)
| | - Markus Bosmann
- From the Center for Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg University of Mainz (JGU), Germany (S.A., E.W., G.P., H.F., F.B., M.M., F.M., A.G., M.B., M.S., I.B., K.G., K.K., K.J., C.R.).,Pulmonary Center, Department of Medicine, Boston University School of Medicine, MA (M.B.)
| | - Mona Saffarzadeh
- From the Center for Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg University of Mainz (JGU), Germany (S.A., E.W., G.P., H.F., F.B., M.M., F.M., A.G., M.B., M.S., I.B., K.G., K.K., K.J., C.R.)
| | - Inês Brandão
- From the Center for Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg University of Mainz (JGU), Germany (S.A., E.W., G.P., H.F., F.B., M.M., F.M., A.G., M.B., M.S., I.B., K.G., K.K., K.J., C.R.).,Centro de Apoio Tecnológico Agro Alimentar (CATAA), Zona Industrial de Castelo Branco, Portugal (I.B.)
| | - Kathrin Groß
- From the Center for Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg University of Mainz (JGU), Germany (S.A., E.W., G.P., H.F., F.B., M.M., F.M., A.G., M.B., M.S., I.B., K.G., K.K., K.J., C.R.)
| | - Klytaimnistra Kiouptsi
- From the Center for Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg University of Mainz (JGU), Germany (S.A., E.W., G.P., H.F., F.B., M.M., F.M., A.G., M.B., M.S., I.B., K.G., K.K., K.J., C.R.)
| | - Jens M Kittner
- I. Department of Medicine, University Medical Center of the Johannes Gutenberg University of Mainz, Germany (J.M.K.)
| | - Karl J Lackner
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Mainz, Germany (K.J.L.)
| | - Kerstin Jurk
- From the Center for Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg University of Mainz (JGU), Germany (S.A., E.W., G.P., H.F., F.B., M.M., F.M., A.G., M.B., M.S., I.B., K.G., K.K., K.J., C.R.)
| | - Christoph Reinhardt
- From the Center for Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg University of Mainz (JGU), Germany (S.A., E.W., G.P., H.F., F.B., M.M., F.M., A.G., M.B., M.S., I.B., K.G., K.K., K.J., C.R.).,German Center for Cardiovascular Research, Partner Site RheinMain, Mainz, Germany (A.G., C.R.)
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Bayer F, Ascher S, Pontarollo G, Reinhardt C. Antibiotic Treatment Protocols and Germ-Free Mouse Models in Vascular Research. Front Immunol 2019; 10:2174. [PMID: 31572384 PMCID: PMC6751252 DOI: 10.3389/fimmu.2019.02174] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 08/28/2019] [Indexed: 12/13/2022] Open
Abstract
The gut microbiota influence host vascular physiology locally in the intestine, but also evoke remote effects that impact distant organ functions. Amongst others, the microbiota affect intestinal vascular remodeling, lymphatic development, cardiac output and vascular function, myelopoiesis, prothrombotic platelet function, and immunovigilance of the host. Experimentally, host-microbiota interactions are investigated by working with animals devoid of symbiotic bacteria, i.e., by the decimation of gut commensals by antibiotic administration, or by taking advantage of germ-free mouse isolator technology. Remarkably, some of the vascular effects that were unraveled following antibiotic treatment were not observed in the germ-free animal models and vice versa. In this review, we will dissect the manifold influences that antibiotics have on the cardiovascular system and their effects on thromboinflammation.
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Affiliation(s)
- Franziska Bayer
- Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Johannes Gutenberg University Mainz, Mainz, Germany
| | - Stefanie Ascher
- Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Johannes Gutenberg University Mainz, Mainz, Germany
| | - Giulia Pontarollo
- Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Johannes Gutenberg University Mainz, Mainz, Germany
| | - Christoph Reinhardt
- Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Johannes Gutenberg University Mainz, Mainz, Germany.,German Center for Cardiovascular Research (DZHK), Partner Site RheinMain, Mainz, Germany
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Khandagale A, Kittner JM, Mann A, Ascher S, Kollar B, Reinhardt C. Coagulation factor 9-deficient mice are protected against dextran sulfate sodium-induced colitis. Biol Open 2018; 7:bio.034140. [PMID: 29945876 PMCID: PMC6078354 DOI: 10.1242/bio.034140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Patients with inflammatory bowel disease (IBD) are susceptible to thromboembolism. Interestingly, IBD occurs less frequently in patients with inherited bleeding disorders. Therefore, we analyzed whether F9-deficiency is protective against the onset of acute colitis in a genetic hemophilia B mouse model. In the 3.5% dextran sulfate sodium (DSS)-induced colitis model, F9-deficient mice were protected from body-weight loss and had a reduced disease activity score. We detected decreased colonic myeloperoxidase activity and decreased CXCL1 levels in DSS-treated F9-deficient mice compared with wild-type (WT) littermate controls, indicating decreased neutrophil infiltration. Remarkably, we identified expression of coagulation factor IX (FIX) protein in small intestinal epithelial cells (MODE-K). In epithelial cell cultures, cellular FIX protein expression was increased following stimulation with the bacterial Toll-like receptor agonists lipopolysaccharide, macrophage-activating lipopeptide-2 and Pam3CSK4. Thus, we revealed a protective role of F9-deficiency in DSS-induced colitis and identified the intestinal epithelium as a site of ectopic FIX. This article has an associated First Person interview with the first author of the paper. Summary: Since IBD incidence is less frequent in patients with inherited bleeding disorders, we explored and demonstrated that F9-deficiency is protective against DSS-induced acute colitis in a hemophilia B mouse model.
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Affiliation(s)
- Avinash Khandagale
- Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany.,Institute of Environmental Medicine, Karolinska Institutet, SE-171 77 Stockholm, Sweden
| | - Jens M Kittner
- I. Department of Medicine, University Medical Center Mainz, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Amrit Mann
- Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Stefanie Ascher
- Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Bettina Kollar
- Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Christoph Reinhardt
- Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany .,German Center for Cardiovascular Research (DZHK), Partner Site RheinMain, Mainz, Germany
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Ascher S, Reinhardt C. The gut microbiota: An emerging risk factor for cardiovascular and cerebrovascular disease. Eur J Immunol 2018; 48:564-575. [DOI: 10.1002/eji.201646879] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 11/24/2017] [Accepted: 12/08/2017] [Indexed: 12/13/2022]
Affiliation(s)
- Stefanie Ascher
- Center for Thrombosis and Hemostasis; University Medical Center Mainz, Johannes Gutenberg University of Mainz; Mainz Germany
| | - Christoph Reinhardt
- Center for Thrombosis and Hemostasis; University Medical Center Mainz, Johannes Gutenberg University of Mainz; Mainz Germany
- German Center for Cardiovascular Research (DZHK); Partner Site RheinMain; Mainz Germany
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Diener HC, Dodick DW, Goadsby PJ, Bigal ME, Bussone G, Silberstein SD, Mathew N, Ascher S, Morein J, Hulihan JF, Biondi DM, Greenberg SJ. Utility of Topiramate for the Treatment of Patients with Chronic Migraine in the Presence or Absence of Acute Medication Overuse. Cephalalgia 2009; 29:1021-7. [PMID: 19735529 DOI: 10.1111/j.1468-2982.2009.01859.x] [Citation(s) in RCA: 98] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Chronic migraine has been linked to the excessive use of acute headache medications. Medication overuse (MO) is commonly considered the most significant risk factor for the progression of migraine from an episodic to a chronic condition. Managing MO is a challenge. Discontinuation of the acute medication can result in withdrawal headache, nausea, vomiting and sleep disturbances. This review summarizes the results from two similarly designed, randomized, placebo- controlled, multicentre studies of chronic migraine conducted in the USA and European Union. Both studies demonstrate the efficacy and safety of the migraine preventive medication, topiramate, for the treatment of chronic migraine in patient populations both with and without MO. These studies may have important implications for the future of chronic migraine management, suggesting that detoxification prior to initiating prophylactic therapy may not be required in all patients if MO is present.
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Affiliation(s)
- H-C Diener
- Department of Neurology, University of Duisburg-Essen, Essen, Germany
| | | | - PJ Goadsby
- Department of Neurology, University of California, San Francisco, CA
| | - ME Bigal
- Merck Scientific Affairs—Neuroscience, Whitehouse Station
| | - G Bussone
- Department of Neurology, ‘C. Besta’ Neurological Institute, Milan, Italy
| | | | - N Mathew
- Houston Headache Clinic, Houston, TX
| | - S Ascher
- Ortho-McNeil Janssen Scientific Affairs, LLC, Titusville, NJ
| | - J Morein
- Ortho-McNeil Janssen Scientific Affairs, LLC, Titusville, NJ
| | - JF Hulihan
- Ortho-McNeil Janssen Scientific Affairs, LLC, Titusville, NJ
| | - DM Biondi
- Ortho-McNeil Janssen Scientific Affairs, LLC, Titusville, NJ
| | - SJ Greenberg
- Neurology, Global Clinical Development EMD Serono, Inc., Rockland, MA, USA
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Láinez MJA, Freitag FG, Pfeil J, Ascher S, Olson WH, Schwalen S. Time course of adverse events most commonly associated with topiramate for migraine prevention. Eur J Neurol 2007; 14:900-6. [PMID: 17662012 DOI: 10.1111/j.1468-1331.2007.01869.x] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [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: 11/28/2022]
Abstract
The efficacy, safety and tolerability of topiramate has been demonstrated in three large multicenter, randomized, double-blind, placebo-controlled trials. To characterize the time course of adverse events (AEs) that led to treatment discontinuation in >/=2% of patients who received topiramate 100 mg/day during three pivotal, multicenter, randomized, double-blind, placebo-controlled, and 26-week trials. The pooled population comprised all randomized patients who reported safety data during the double-blind phase (topiramate 100 mg/day, n = 386; placebo n = 372), which consisted of a 4-week titration period and a 22-week maintenance period. Incidence, time to onset, and cumulative mean rate of AEs were assessed. Overall, AEs led to treatment discontinuation in 24.9% of patients receiving topiramate 100 mg/day and 11.0% receiving placebo (P < 0.001). AEs leading to discontinuation during the double-blind phase in > or =2% of patients included paresthesia (8.0% discontinued), any cognitive symptoms (7.3% discontinued), fatigue (4.7% discontinued), insomnia (3.4% discontinued), nausea (2.3% discontinued), loss of appetite, anxiety, and dizziness (2.1% discontinued because each AE). Most AEs began during the titration period. Paresthesia, any cognitive symptoms, nausea, and loss of appetite occurred at a higher rate in the topiramate group than in the placebo group (P < 0.01). AEs leading to discontinuation of topiramate are probably to occur during dose titration. If a patient has not experienced one of these AEs within the first 6 weeks of initiating topiramate 100 mg/day, these AEs are unlikely to occur.
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Affiliation(s)
- M J A Láinez
- University Clinic Hospital, University of Valencia, Valencia, Spain.
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Lehman C, Gatsonis C, Isaacs C, Pisano E, Ascher S, Weatherall P, Bluemke D, Schnall M. Cancer yield of mammography, MRI, and ultrasound in high-risk women enrolled in a prospective multi-institution breast cancer screening trial. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.9626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- C. Lehman
- University of Washington, Seattle, WA; Brown University, Providence, RI; Georgetown University, Washington, DC; University of North Carolina, Chapel Hill, NC; University of Texas Southwestern, Dallas, TX; Johns Hopkins University, Baltimore, MD; University of Pennsylvania, Philadelphia, PA
| | - C. Gatsonis
- University of Washington, Seattle, WA; Brown University, Providence, RI; Georgetown University, Washington, DC; University of North Carolina, Chapel Hill, NC; University of Texas Southwestern, Dallas, TX; Johns Hopkins University, Baltimore, MD; University of Pennsylvania, Philadelphia, PA
| | - C. Isaacs
- University of Washington, Seattle, WA; Brown University, Providence, RI; Georgetown University, Washington, DC; University of North Carolina, Chapel Hill, NC; University of Texas Southwestern, Dallas, TX; Johns Hopkins University, Baltimore, MD; University of Pennsylvania, Philadelphia, PA
| | - E. Pisano
- University of Washington, Seattle, WA; Brown University, Providence, RI; Georgetown University, Washington, DC; University of North Carolina, Chapel Hill, NC; University of Texas Southwestern, Dallas, TX; Johns Hopkins University, Baltimore, MD; University of Pennsylvania, Philadelphia, PA
| | - S. Ascher
- University of Washington, Seattle, WA; Brown University, Providence, RI; Georgetown University, Washington, DC; University of North Carolina, Chapel Hill, NC; University of Texas Southwestern, Dallas, TX; Johns Hopkins University, Baltimore, MD; University of Pennsylvania, Philadelphia, PA
| | - P. Weatherall
- University of Washington, Seattle, WA; Brown University, Providence, RI; Georgetown University, Washington, DC; University of North Carolina, Chapel Hill, NC; University of Texas Southwestern, Dallas, TX; Johns Hopkins University, Baltimore, MD; University of Pennsylvania, Philadelphia, PA
| | - D. Bluemke
- University of Washington, Seattle, WA; Brown University, Providence, RI; Georgetown University, Washington, DC; University of North Carolina, Chapel Hill, NC; University of Texas Southwestern, Dallas, TX; Johns Hopkins University, Baltimore, MD; University of Pennsylvania, Philadelphia, PA
| | - M. Schnall
- University of Washington, Seattle, WA; Brown University, Providence, RI; Georgetown University, Washington, DC; University of North Carolina, Chapel Hill, NC; University of Texas Southwestern, Dallas, TX; Johns Hopkins University, Baltimore, MD; University of Pennsylvania, Philadelphia, PA
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Fenton BW, Lin CS, Macedonia C, Schellinger D, Ascher S. The fetus at term: in utero volume-selected proton MR spectroscopy with a breath-hold technique--a feasibility study. Radiology 2001; 219:563-6. [PMID: 11323489 DOI: 10.1148/radiology.219.2.r01ma29563] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [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: 11/11/2022]
Abstract
In three healthy gravidas at 38 and 39 weeks gestation, fetal MR spectroscopy was performed with a breath-hold technique by using the following pulse sequences: single voxel point-resolved spectroscopy, or PRESS, for liver and heart studies and stimulated-echo acquisition mode, or STEAM, for brain studies. Signal peaks of lipid from heart and liver were detected, as were the signal peaks of choline, creatine, and N-acetylaspartate from fetal brain. Findings demonstrated the feasibility of performing proton MR spectroscopy to assess mobile fetal structures.
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Affiliation(s)
- B W Fenton
- Department of Obstetrics and Gynecology, Georgetown University Medical Center, Washington, DC, USA.
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Abstract
BACKGROUND Proton magnetic resonance spectroscopy is a noninvasive technique that detects molecules within a specified region in vivo. Lecithin, the major component of surfactant, has a characteristic magnetic resonance signal, but to our knowledge, it has never been reported in fetal lung or amniotic fluid (AF). The objective of this study was to characterize the lecithin signal in utero, which could lead to a noninvasive fetal lung maturity test. METHOD Human fetal lung and AF pockets can be identified and studied with magnetic resonance spectroscopy with the use of a 1.5-tesla Vision whole-body magnetic resonance scanner (Siemens Medical Systems; Erlangen, Germany). Spectroscopy data are collected with a single-voxel-point-resolved spectroscopy sequence. After identification of fetal anatomy with the use of scout magnetic resonance images, magnetic resonance spectroscopy of human fetal lung and AF identifies a lecithin peak. EXPERIENCE Three healthy gravidas near term were studied and lecithin peaks were identified in all. CONCLUSION Lecithin can be identified in vivo with the use of volume-selected proton magnetic resonance spectroscopy. Patient comfort and extremely short scan times suggest that refined magnetic resonance spectroscopy might be a safe, quick, and comfortable test of fetal lung maturity.
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Affiliation(s)
- B W Fenton
- Department of Obstetrics and Gynecology, Georgetown University Medical Center, Washington, DC 20007, USA.
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Ascher S. MR a catalyst for improving women's health. Diagn Imaging (San Franc) 1999; 21:199-203. [PMID: 10724838] [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: 02/15/2023]
Affiliation(s)
- S Ascher
- Georgetown University in Washington, DC, USA
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Garra BS, Krasner BH, Horii SC, Ascher S, Mun SK, Zeman RK. Improving the distinction between benign and malignant breast lesions: the value of sonographic texture analysis. Ultrason Imaging 1993; 15:267-285. [PMID: 8171752 DOI: 10.1177/016173469301500401] [Citation(s) in RCA: 75] [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] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
To improve the ability of ultrasound to distinguish benign from malignant breast lesions, we used quantitative analysis of ultrasound image texture. Eight cancers, 22 cysts, 28 fibroadenomata, and 22 fibrocystic nodules were studied. The true nature of each lesion was determined by aspiration (for some cysts) or by open biopsy. Analysis of image texture was performed on digitized video output from the ultrasound scanner using fractal analysis and statistical texture analysis methods. The most useful features were those derived from co-occurrence matrices of the images. Using two features together (contrast of a co-occurrence matrix taken in an oblique direction, and correlation of a co-occurrence matrix taken in the horizontal direction), it was possible to exclude 78% of fibroadenomata, 73% of cysts, and 91% of fibrocystic nodules while maintaining 100% sensitivity for cancer. These findings suggest that ultrasonic image texture analysis is a simple way to markedly reduce the number of benign lesion biopsies without missing additional cancers.
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Affiliation(s)
- B S Garra
- Department of Radiology, Georgetown University Medical Center, Washington, DC 20007-2197
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Ascher S. Professional advertising: where is it today? Mod Dent Pract 1988; 1:17-21. [PMID: 3210941] [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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Ascher S. External marketing. How it can build a dental practice. Dent Clin North Am 1988; 32:59-71. [PMID: 3422203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
This article gives a general introduction to external marketing as it befits the image of the dental professional. Research and various media opportunities are discussed, highlighting their advantages and pointing out the pros and cons of each. The latest trends in advertising philosophy are intertwined with concrete advice regarding cost effectiveness. This article is helpful to solo as well as group practitioners.
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Affiliation(s)
- S Ascher
- Mitchell Ascher Advertising Inc., New York, New York
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Ascher S. How to develop a practice-building office brochure. Dent Manage 1987; 27:55-7. [PMID: 3467997] [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: 01/05/2023]
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Ascher S. Direct approach: get the most out of your mailings. Dent Manage 1986; 26:34-7. [PMID: 3460870] [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: 01/05/2023]
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Ascher S. PR for the dental office: turning the public into patients. Dent Manage 1985; 25:50-1, 54-5. [PMID: 3858129] [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: 01/07/2023]
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Ascher S. Smile! When you say advertising. Dent Stud 1984; 62:49-52. [PMID: 6586547] [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: 01/20/2023]
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Ascher S, Ridgeway K. Promotion for the professional. Dent Econ 1984; 74:75-6, 78. [PMID: 6589192] [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: 01/20/2023]
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Ascher S. Incentive marketing can attract patients to your practice. Dent Manage 1984; 24:48-9, 53. [PMID: 6585325] [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: 01/20/2023]
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Ascher S. Fear of flyers or why advertising is here to stay. Dent Manage 1982; 22:55, 57. [PMID: 6951732] [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: 01/22/2023]
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Ascher S. How to use P.R. tools to boost practice growth. Dent Econ 1981; 71:99-100, 102. [PMID: 6949839] [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: 01/22/2023]
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Müller OA, Ascher S, Fahlbusch R, Hirsch F, Kluge F, Moll HC, Scriba PC. [Diagnosis of diabetes insipidus with special reference to hypophysectomized patients]. Acta Neurochir (Wien) 1972; 26:179-90. [PMID: 4654069 DOI: 10.1007/bf01406555] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [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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Ascher S, Moll H. [On the differential diagnosis of chronic arsenical poisoning]. Munch Med Wochenschr 1969; 111:1334-6. [PMID: 5819841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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