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Goretzko J, Pauels I, Heitzig N, Thomas K, Kardell M, Naß J, Krogsaeter EK, Schloer S, Spix B, Linard Matos AL, Leser C, Wegner T, Glorius F, Bracher F, Gerke V, Rossaint J, Grimm C, Rescher U. P-selectin-dependent leukocyte adhesion is governed by endolysosomal two-pore channel 2. Cell Rep 2023; 42:113501. [PMID: 38039128 DOI: 10.1016/j.celrep.2023.113501] [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] [Received: 05/20/2022] [Revised: 09/18/2023] [Accepted: 11/10/2023] [Indexed: 12/03/2023] Open
Abstract
Upon proinflammatory challenges, endothelial cell surface presentation of the leukocyte receptor P-selectin, together with the stabilizing co-factor CD63, is needed for leukocyte capture and is mediated via demand-driven exocytosis from the Weibel-Palade bodies that fuse with the plasma membrane. We report that neutrophil recruitment to activated endothelium is significantly reduced in mice deficient for the endolysosomal cation channel TPC2 and in human primary endothelial cells with pharmacological TPC2 block. We observe less CD63 signal in whole-mount stainings of proinflammatory-activated cremaster muscles from TPC2 knockout mice. We find that TPC2 is activated and needed to ensure the transfer of CD63 from endolysosomes via Weibel-Palade bodies to the plasma membrane to retain P-selectin on the cell surface of human primary endothelial cells. Our findings establish TPC2 as a key element to leukocyte interaction with the endothelium and a potential pharmacological target in the control of inflammatory leukocyte recruitment.
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Affiliation(s)
- Jonas Goretzko
- Research Group Cellular Biochemistry - Regulatory Mechanisms of Inflammation, Institute of Molecular Virology, Center for Molecular Biology of Inflammation, University of Muenster (formerly Research Group Regulatory Mechanisms of Inflammation, Institute of Medical Biochemistry, Center for Molecular Biology of Inflammation, University of Muenster), von-Esmarch-Strasse 56, 48149 Muenster, Germany
| | - Inga Pauels
- Research Group Cellular Biochemistry - Regulatory Mechanisms of Inflammation, Institute of Molecular Virology, Center for Molecular Biology of Inflammation, University of Muenster (formerly Research Group Regulatory Mechanisms of Inflammation, Institute of Medical Biochemistry, Center for Molecular Biology of Inflammation, University of Muenster), von-Esmarch-Strasse 56, 48149 Muenster, Germany
| | - Nicole Heitzig
- Research Group Cellular Biochemistry - Regulatory Mechanisms of Inflammation, Institute of Molecular Virology, Center for Molecular Biology of Inflammation, University of Muenster (formerly Research Group Regulatory Mechanisms of Inflammation, Institute of Medical Biochemistry, Center for Molecular Biology of Inflammation, University of Muenster), von-Esmarch-Strasse 56, 48149 Muenster, Germany
| | - Katharina Thomas
- Department of Anesthesiology, Intensive Care and Pain Medicine, University Hospital Muenster, Albert Schweitzer Campus 1, A1, 48149 Muenster, Germany
| | - Marina Kardell
- Department of Anesthesiology, Intensive Care and Pain Medicine, University Hospital Muenster, Albert Schweitzer Campus 1, A1, 48149 Muenster, Germany
| | - Johannes Naß
- Institute of Medical Biochemistry, Center for Molecular Biology of Inflammation, University of Muenster, von-Esmarch-Strasse 56, 48149 Muenster, Germany
| | - Einar Kleinhans Krogsaeter
- Walther-Straub-Institute for Pharmacology and Toxicology, Ludwig-Maximilians-University, Nussbaumstrasse 26, 80336 Munich, Germany
| | - Sebastian Schloer
- Research Group Cellular Biochemistry - Regulatory Mechanisms of Inflammation, Institute of Molecular Virology, Center for Molecular Biology of Inflammation, University of Muenster (formerly Research Group Regulatory Mechanisms of Inflammation, Institute of Medical Biochemistry, Center for Molecular Biology of Inflammation, University of Muenster), von-Esmarch-Strasse 56, 48149 Muenster, Germany
| | - Barbara Spix
- Walther-Straub-Institute for Pharmacology and Toxicology, Ludwig-Maximilians-University, Nussbaumstrasse 26, 80336 Munich, Germany
| | - Anna Lívia Linard Matos
- Institute of Medical Biochemistry, Center for Molecular Biology of Inflammation, University of Muenster, von-Esmarch-Strasse 56, 48149 Muenster, Germany
| | - Charlotte Leser
- Department of Pharmacy, Center for Drug Research, Ludwig-Maximilians-University, Butenandtstrasse 5-13, 81377 Munich, Germany
| | - Tristan Wegner
- Institute of Organic Chemistry, University of Muenster, Corrensstrasse 40, 48149 Muenster, Germany
| | - Frank Glorius
- Institute of Organic Chemistry, University of Muenster, Corrensstrasse 40, 48149 Muenster, Germany
| | - Franz Bracher
- Department of Pharmacy, Center for Drug Research, Ludwig-Maximilians-University, Butenandtstrasse 5-13, 81377 Munich, Germany
| | - Volker Gerke
- Institute of Medical Biochemistry, Center for Molecular Biology of Inflammation, University of Muenster, von-Esmarch-Strasse 56, 48149 Muenster, Germany
| | - Jan Rossaint
- Department of Anesthesiology, Intensive Care and Pain Medicine, University Hospital Muenster, Albert Schweitzer Campus 1, A1, 48149 Muenster, Germany
| | - Christian Grimm
- Walther-Straub-Institute for Pharmacology and Toxicology, Ludwig-Maximilians-University, Nussbaumstrasse 26, 80336 Munich, Germany; Immunology, Infection and Pandemic Research IIP, Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, 60596 Frankfurt am Main, Germany
| | - Ursula Rescher
- Research Group Cellular Biochemistry - Regulatory Mechanisms of Inflammation, Institute of Molecular Virology, Center for Molecular Biology of Inflammation, University of Muenster (formerly Research Group Regulatory Mechanisms of Inflammation, Institute of Medical Biochemistry, Center for Molecular Biology of Inflammation, University of Muenster), von-Esmarch-Strasse 56, 48149 Muenster, Germany.
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Rautenberg S, Keller M, Leser C, Chen CC, Bracher F, Grimm C. Expanding the Toolbox: Novel Modulators of Endolysosomal Cation Channels. Handb Exp Pharmacol 2023; 278:249-276. [PMID: 35902436 DOI: 10.1007/164_2022_605] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/28/2023]
Abstract
Functional characterization of endolysosomal ion channels is challenging due to their intracellular location. With recent advances in endolysosomal patch clamp technology, it has become possible to directly measure ion channel currents across endolysosomal membranes. Members of the transient receptor potential (TRP) cation channel family, namely the endolysosomal TRPML channels (TRPML1-3), also called mucolipins, as well as the distantly related two-pore channels (TPCs) have recently been characterized in more detail with endolysosomal patch clamp techniques. However, answers to many physiological questions require work in intact cells or animal models. One major obstacle thereby is that the known endogenous ligands of TRPMLs and TPCs are anionic in nature and thus impermeable for cell membranes. Microinjection, on the other hand, is technically demanding. There is also a risk of losing essential co-factors for channel activation or inhibition in isolated preparations. Therefore, lipophilic, membrane-permeable small-molecule activators and inhibitors for TRPMLs and TPCs are urgently needed. Here, we describe and discuss the currently available small-molecule modulators of TRPMLs and TPCs.
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Affiliation(s)
- Susanne Rautenberg
- Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians-University, Munich, Germany
| | - Marco Keller
- Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians-University, Munich, Germany
| | - Charlotte Leser
- Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians-University, Munich, Germany
| | - Cheng-Chang Chen
- Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians-University, Munich, Germany
| | - Franz Bracher
- Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians-University, Munich, Germany.
| | - Christian Grimm
- Department of Pharmacology and Toxicology, Medical Faculty, Ludwig-Maximilians-University, Munich, Germany.
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Kriegler K, Leser C, Mayer P, Bracher F. Effective chiral pool synthesis of both enantiomers of the TRPML inhibitor trans-ML-SI3. Arch Pharm (Weinheim) 2021; 355:e2100362. [PMID: 34738656 DOI: 10.1002/ardp.202100362] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 09/15/2021] [Revised: 10/10/2021] [Accepted: 10/12/2021] [Indexed: 01/05/2023]
Abstract
Two independent chiral pool syntheses of both enantiomers of the TRPML inhibitor, trans-ML-SI3, were developed, starting from commercially available (1S,2R)- and (1R,2S)-configured cis-2-aminocyclohexanols. Both routes lead to the target compounds in excellent enantiomeric purity and good overall yields. For the most attractive (-)-trans-enantiomer, the R,R-configuration was identified by these unambiguous syntheses, and the results were confirmed by single-crystal X-ray structure analysis. These effective synthetic approaches further allow flexible variation of prominent residues in ML-SI3 for future in-depth analysis of structure-activity relationships as both the piperazine and the N-sulfonyl residues are introduced into the molecule at late stages of the synthesis.
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Affiliation(s)
- Katharina Kriegler
- Department of Pharmacy, Center for Drug Research, Ludwig-Maximilians University of Munich, Munich, Germany
| | - Charlotte Leser
- Department of Pharmacy, Center for Drug Research, Ludwig-Maximilians University of Munich, Munich, Germany
| | - Peter Mayer
- Department of Chemistry, Ludwig-Maximilians University of Munich, Munich, Germany
| | - Franz Bracher
- Department of Pharmacy, Center for Drug Research, Ludwig-Maximilians University of Munich, Munich, Germany
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Leser C, Keller M, Gerndt S, Urban N, Chen CC, Schaefer M, Grimm C, Bracher F. Chemical and pharmacological characterization of the TRPML calcium channel blockers ML-SI1 and ML-SI3. Eur J Med Chem 2020; 210:112966. [PMID: 33187805 DOI: 10.1016/j.ejmech.2020.112966] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [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: 08/18/2020] [Revised: 10/06/2020] [Accepted: 10/21/2020] [Indexed: 02/02/2023]
Abstract
The members of the TRPML subfamily of non-selective cation channels (TRPML1-3) are involved in the regulation of important lysosomal and endosomal functions, and mutations in TRPML1 are associated with the neurodegenerative lysosomal storage disorder mucolipidosis type IV. For in-depth investigation of functions and (patho)physiological roles of TRPMLs, membrane-permeable chemical tools are urgently needed. But hitherto only two TRPML inhibitors, ML-SI1 and ML-SI3, have been published, albeit without clear information about stereochemical details. In this investigation we developed total syntheses of both inhibitors. ML-SI1 was only obtained as a racemic mixture of inseparable diastereomers and showed activator-dependent inhibitory activity. The more promising tool is ML-SI3, hence ML-SI1 was not further investigated. For ML-SI3 we confirmed by stereoselective synthesis that the trans-isomer is significantly more active than the cis-isomer. Separation of the enantiomers of trans-ML-SI3 further revealed that the (-)-isomer is a potent inhibitor of TRPML1 and TRPML2 (IC50 values 1.6 and 2.3 μM) and a weak inhibitor (IC50 12.5 μM) of TRPML3, whereas the (+)-enantiomer is an inhibitor on TRPML1 (IC50 5.9 μM), but an activator on TRPML 2 and 3. This renders the pure (-)-trans-ML-SI3 more suitable as a chemical tool for the investigation of TRPML1 and 2 than the racemate. The analysis of 12 analogues of ML-SI3 gave first insights into structure-activity relationships in this chemotype, and showed that a broad variety of modifications in both the N-arylpiperazine and the sulfonamide moiety is tolerated. An aromatic analogue of ML-SI3 showed an interesting alternative selectivity profile (strong inhibitor of TRPML1 and strong activator of TRPML2).
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Affiliation(s)
- Charlotte Leser
- Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians University, Munich, Germany
| | - Marco Keller
- Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians University, Munich, Germany
| | - Susanne Gerndt
- Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians University, Munich, Germany
| | - Nicole Urban
- Rudolf-Boehm-Institute for Pharmacology and Toxicology, Leipzig University, Leipzig, Germany
| | - Cheng-Chang Chen
- Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians University, Munich, Germany
| | - Michael Schaefer
- Rudolf-Boehm-Institute for Pharmacology and Toxicology, Leipzig University, Leipzig, Germany
| | - Christian Grimm
- Walther-Straub-Institute of Pharmacology and Toxicology, Faculty of Medicine, Ludwig-Maximilians University, Munich, Germany
| | - Franz Bracher
- Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians University, Munich, Germany.
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Deutschmann C, Knoth J, Gschwantler-Kaulich D, Singer CF, Leser C, Kauer-Dorner D. The impact of prepectoral implant positioning in breast reconstruction on the technical delivery of postmastectomy radiotherapy. Geburtshilfe Frauenheilkd 2020. [DOI: 10.1055/s-0040-1714532] [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: 03/22/2023] Open
Affiliation(s)
| | - J Knoth
- Medizinische Universität Wien
| | | | | | - C Leser
- Medizinische Universität Wien
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Deutschmann C, Clauser P, Tan Y, Singer CF, Leser C, Gschwantler-Kaulich D. Präpektorale versus Retropektorale Implantatrekonstruktion – Überlegungen zur Implantattasche. Geburtshilfe Frauenheilkd 2020. [DOI: 10.1055/s-0039-3403409] [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: 10/24/2022] Open
Affiliation(s)
- C Deutschmann
- Medizinische Universität Wien, Universitätsklinik für Frauenheilkunde
| | - P Clauser
- Medizinische Universität Wien, Universitätsklinik für Radiologie
| | - Y Tan
- Medizinische Universität Wien, Universitätsklinik für Frauenheilkunde
| | - C F Singer
- Medizinische Universität Wien, Universitätsklinik für Frauenheilkunde
| | - C Leser
- Medizinische Universität Wien, Universitätsklinik für Frauenheilkunde
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Leser C, Reiner A, Dorffner G, Kastner MT, Igaz M, Singer C, Deutschmann C, Holzer I, Castillo DM, Gschwantler-Kaulich D. Expression von Biomarkern des Cyclin D-Cyclin dependent Kinase 4/6-Retinoblastompathways in tissue arrays von primären Brusttumoren und gematchten Lymphknotenmetastasen. Geburtshilfe Frauenheilkd 2020. [DOI: 10.1055/s-0039-3403393] [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: 10/24/2022] Open
Affiliation(s)
- C Leser
- Abteilung für Gynäkologie und geburtshilfe, Medizinische Universität Wien
| | - A Reiner
- Abteilung für Pathologie, Sozialmedizinisches Zentrum Ost, Wien
| | - G Dorffner
- Sektion für artifizielle Intelligenz, Medizinische Universität Wien
| | - M-T Kastner
- Abteilung für Gynäkologie und geburtshilfe, Medizinische Universität Wien
| | | | - C Singer
- Abteilung für Gynäkologie und geburtshilfe, Medizinische Universität Wien
| | - C Deutschmann
- Abteilung für Gynäkologie und geburtshilfe, Medizinische Universität Wien
| | - I Holzer
- Abteilung für Gynäkologie und geburtshilfe, Medizinische Universität Wien
| | - D M Castillo
- Abteilung für Gynäkologie und geburtshilfe, Medizinische Universität Wien
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Deutschmann C, Dorffner G, Singer CF, Leser C, Gschwantler-Kaulich D. Präpektorale versus retropektorale Implantatrekonstruktion – ein Vergleich der Methoden-assoziierten Komplikationsraten. Geburtshilfe Frauenheilkd 2019. [DOI: 10.1055/s-0039-1681989] [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: 10/27/2022] Open
Affiliation(s)
- C Deutschmann
- Medizinische Universität Wien, Universitätsklinik für Frauenheilkunde, Klinische Abteilung für Allgemeine Gynäkologie und gynäkologische Onkologie
| | - G Dorffner
- Medizinische Universität Wien, Zentrum für Medizinische Statistik, Informatik und Intelligente Systeme, Institut für Artificial Intelligence and Decision Support
| | - CF Singer
- Medizinische Universität Wien, Universitätsklinik für Frauenheilkunde, Klinische Abteilung für Allgemeine Gynäkologie und gynäkologische Onkologie
| | - C Leser
- Medizinische Universität Wien, Universitätsklinik für Frauenheilkunde, Klinische Abteilung für Allgemeine Gynäkologie und gynäkologische Onkologie
| | - D Gschwantler-Kaulich
- Medizinische Universität Wien, Universitätsklinik für Frauenheilkunde, Klinische Abteilung für Allgemeine Gynäkologie und gynäkologische Onkologie
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Deutschmann C, Gschwantler-Kaulich D, Dorffner G, Singer CF, Leser C, Kauer-Dorner D. Präpektorale versus retropektorale implantat-basierte Brustrekonstruktion – Die strahlentherapeutische Perspektive. Geburtshilfe Frauenheilkd 2019. [DOI: 10.1055/s-0039-1681988] [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: 10/27/2022] Open
Affiliation(s)
- C Deutschmann
- Medizinische Universität Wien, Universitätsklinik für Frauenheilkunde, Klinische Abteilung für Allgemeine Gynäkologie und gynäkologische Onkologie
| | - D Gschwantler-Kaulich
- Medizinische Universität Wien, Universitätsklinik für Frauenheilkunde, Klinische Abteilung für Allgemeine Gynäkologie und gynäkologische Onkologie
| | - G Dorffner
- Medizinische Universität Wien, Zentrum für Medizinische Statistik, Informatik und Intelligente Systeme, Institut für Artificial Intelligence and Decision Support
| | - CF Singer
- Medizinische Universität Wien, Universitätsklinik für Frauenheilkunde, Klinische Abteilung für Allgemeine Gynäkologie und gynäkologische Onkologie
| | - C Leser
- Medizinische Universität Wien, Universitätsklinik für Frauenheilkunde, Klinische Abteilung für Allgemeine Gynäkologie und gynäkologische Onkologie
| | - D Kauer-Dorner
- Medizinische Universität Wien, Universitätsklinik für Strahlentherapie
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Deutschmann C, Singer C, Leser C, Gschwantler-Kaulich D. Prepectoral versus retropectoral implant-based breast reconstruction – considerations regarding the implant pocket. Breast 2019. [DOI: 10.1016/s0960-9776(19)30404-7] [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: 10/27/2022] Open
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Deutschmann C, Gschwantler-Kaulich D, Dorffner G, Singer C, Leser C, Kauer-Dorner D. Abstract P5-16-06: Prepectoral versus retropectoral implant-based breast reconstruction - The surgical and radiotherapeutical perspective. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p5-16-06] [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: Subpectoral implant positioning has been the standard of care in breast reconstruction despite involving disadvantages owing to the detachment of the pectoralis major muscle such as disruption of the muscle function, animation deformities and prolonged postoperative pain. Refined ablative techniques as well as dermal matrices and synthetic mesh products have led to the reintroduction of subcutaneous implant-based breast reconstruction possibly avoiding the negative sequelae of pectoralis disinsertion.
Objective: The primary objective of this study was to compare procedure-related complication rates following prepectoral versus retropectoral implant-based breast reconstruction. Furthermore the effect of the implant position on the quality of post-mastectomy radiation therapy (PMRT) was analysed.
Methods: All patients who underwent an implant-based breast reconstruction after mastectomy at the Department of Obstetrics and Gynecology of the University Clinic of Vienna within the years 1.1.2013 to 31.12.2017 were included in the study. A retrospective chart review of the patients was conducted assessing parameters regarding the mastectomy, the reconstruction, complications following the reconstructive procedure, patient-associated risk factors and radiation treatment plans. Complication rates were analysed one week, one month and one year after the implant-based reconstructive operation.
Results: In total 57 patients (94 breasts) were reconstructed following a prepectoral implant-placement approach, 95 patients (149 breasts) were reconstructed with implants in a retropectoral position. The two patient cohorts did not differ significantly in the occurrence of complications including the following dehiscence, infection, seroma, secondary bleeding, necrosis, fistula, capsular contracture and rippling. No significant differences regarding reinterventions and reoperations including seroma drainage, secondary suture and reoperation following secondary hemorrhage and necrosis could be detected between the two study populations. The two surgical procedures were not associated with a different rate of implant loss.
12 (2 in the cohort of patients with prepectorally placed implants and 10 in the subgroup of patients with subpectorally positioned implants) out of 152 patients needed PMRT for oncological safety. Prepectoral versus retropectoral implant positioning did not affect breast Dmean or D90, heart Dmax or V5 or lung V20 across treatment plans.
Conclusion: The study demonstrated no inferior outcome regarding the occurrence of complications, reinterventions, reoperations and implant loss of prepectoral implant-based breast reconstruction compared to retropectoral implant positioning. Therefore, subcutaneous implant placement permits reconstruction of the breast with comparable procedure-related complication rates while avoiding disadvantages associated with the detachment of the pectoral muscle.
Regarding the radiation perspective both prepectoral and retropectoral implant positioning allow for optimal coverage of the chest wall with acceptable doses to the heart and lung.
Citation Format: Deutschmann C, Gschwantler-Kaulich D, Dorffner G, Singer C, Leser C, Kauer-Dorner D. Prepectoral versus retropectoral implant-based breast reconstruction - The surgical and radiotherapeutical perspective [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P5-16-06.
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Affiliation(s)
- C Deutschmann
- Medical University of Vienna, Vienna, Austria; Medical University of Vienna, Center for Medical Statistics, Informatics and Intelligent Systems, Section for Artificial Intelligence and Decision Support, Vienna, Austria
| | - D Gschwantler-Kaulich
- Medical University of Vienna, Vienna, Austria; Medical University of Vienna, Center for Medical Statistics, Informatics and Intelligent Systems, Section for Artificial Intelligence and Decision Support, Vienna, Austria
| | - G Dorffner
- Medical University of Vienna, Vienna, Austria; Medical University of Vienna, Center for Medical Statistics, Informatics and Intelligent Systems, Section for Artificial Intelligence and Decision Support, Vienna, Austria
| | - C Singer
- Medical University of Vienna, Vienna, Austria; Medical University of Vienna, Center for Medical Statistics, Informatics and Intelligent Systems, Section for Artificial Intelligence and Decision Support, Vienna, Austria
| | - C Leser
- Medical University of Vienna, Vienna, Austria; Medical University of Vienna, Center for Medical Statistics, Informatics and Intelligent Systems, Section for Artificial Intelligence and Decision Support, Vienna, Austria
| | - D Kauer-Dorner
- Medical University of Vienna, Vienna, Austria; Medical University of Vienna, Center for Medical Statistics, Informatics and Intelligent Systems, Section for Artificial Intelligence and Decision Support, Vienna, Austria
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Gschwantler-Kaulich D, Schrenk P, Bjelic-Radisic V, Unterrieder K, Leser C, Fink-Retter A, Salama M, Singer C. Corrigendum to "Mesh versus acellular dermal matrix in immediate implant-based breast reconstruction - A prospective randomized trial" [Eur J Surg Oncol 42 (5) (2016) 665-671]. Eur J Surg Oncol 2017; 43:1380-1381. [PMID: 28526188 DOI: 10.1016/j.ejso.2017.05.001] [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: 10/19/2022] Open
Affiliation(s)
- D Gschwantler-Kaulich
- Medical University of Vienna, Breast Cancer Center, Department of Gynaecological Oncology, Waehringer Guertel 18-20, 1090 Vienna, Austria.
| | - P Schrenk
- AKH Linz Breast Cancer Center, Krankenhausstrasse 9, 4021 Linz, Austria
| | - V Bjelic-Radisic
- Medical University of Graz, Department of Gynaecology, Auenbruggerplatz 1, 8036 Graz, Austria
| | - K Unterrieder
- Private Hospital Villach, Breast Cancer Center, Department of Gynaecology, Dr.-Walter-Hochsteiner-Straße 4, 9504 Villach, Austria
| | - C Leser
- Medical University of Vienna, Breast Cancer Center, Department of Gynaecological Oncology, Waehringer Guertel 18-20, 1090 Vienna, Austria
| | - A Fink-Retter
- Medical University of Vienna, Breast Cancer Center, Department of Gynaecological Oncology, Waehringer Guertel 18-20, 1090 Vienna, Austria
| | - M Salama
- Otto Wagner Hospital, Department of Surgery, Baumgartner Hoehe 1, 1140 Vienna, Austria
| | - C Singer
- Medical University of Vienna, Breast Cancer Center, Department of Gynaecological Oncology, Waehringer Guertel 18-20, 1090 Vienna, Austria
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Gschwantler-Kaulich E, Schrenk P, Bjelic-Radisic V, Unterrieder K, Leser C, Fink-Retter A, Salama M, Singer C. Mesh versus acellular dermal matrix in immediate implant based breast reconstruction – a prospective randomized trial. Eur J Cancer 2017. [DOI: 10.1016/s0959-8049(17)30176-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Leser C, Tisch A, Tophoven S. [Shift Work among Men and Women on the Threshold to Higher Working Age - Working Conditions and Health Status]. Gesundheitswesen 2016; 78:765-771. [PMID: 27903012 DOI: 10.1055/s-0034-1396850] [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: 10/22/2022]
Abstract
Background: The number of older employees in shift and night work has increased significantly in recent years. Furthermore, the proportion of women in shift and night work has increased markedly. This is due to the aging workforce and the expansion of shift work in the tertiary sector. Previous research shows that shift work is often associated with health risks. Against this background, the aim of the present study is to examine the situation of working men and women on the threshold to higher working age with regard to the relationship between shift work and physical health. Methods: We employed data from the study "lidA - leben in der Arbeit" German Cohort Study on Work, Age and Health, a survey of the German baby boom cohorts born in 1959 and 1965 (n=5 637). Linear regression models are used to study the effect of shift work - with and without night work - and of further work exposures on the baby boomers' physical health status. The models control for sleep and health-related behaviour and are stratified by gender. Among women, also the scope of work was taken into account. Results: The results show that male shift workers are burdened by their on average lower occupational status and by physical exposure; female shift workers additionally suffer from high personal effort and low rewards and female part-time shift workers also from overcommitment. Conclusion: Working conditions of shift workers are strongly characterised by work stress. In order to preserve aging shift workers' work ability, some organisational measures seem necessary. In this context, occupational safety and health management as well as opportunities for recovery and encouraging leadership should be considered.
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Affiliation(s)
- C Leser
- Otto-Friedrich-Universität, Bamberg
| | - A Tisch
- Institut für Arbeitmarkt- und Berufsforschung, Nürnberg
| | - S Tophoven
- Institut für Arbeitmarkt- und Berufsforschung, Nürnberg
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Gschwantler-Kaulich D, Schrenk P, Bjelic-Radisic V, Unterrieder K, Leser C, Fink-Retter A, Salama M, Singer C. Mesh versus acellular dermal matrix in immediate implant-based breast reconstruction - A prospective randomized trial. Eur J Surg Oncol 2016; 42:665-71. [PMID: 26947961 DOI: 10.1016/j.ejso.2016.02.007] [Citation(s) in RCA: 40] [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: 09/30/2015] [Revised: 01/21/2016] [Accepted: 02/02/2016] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Comparative studies on the use of meshes and acellular dermal matrices (ADM) in implant-based breast reconstruction (IBBR) have not yet been performed. METHODS This prospective, randomized, controlled, multicenter pilot study was performed at four Austrian breast cancer centers. Fifty patients with oncologic or prophylactic indication for mastectomy and IBBR were randomized to immediate IBBR with either an ADM (Protexa(®)) or a titanized mesh (TiLOOP(®) Bra). Complications, failed reconstruction, cosmetic outcome, patients' quality of life and the thickness of the overlying tissue were recorded immediately postoperatively and 3 and 6 months after surgery. RESULTS 48 patients participated in the study (Protexa(®) group: 23; TiLOOP(®) Bra group: 25 patients). The overall complication rate was 31.25% with similar rates in both groups (Protexa(®) group: 9 versus TiLOOP(®) Bra group: 6; p = 0.188). There was a higher incidence of severe complications leading to failed reconstructions with implant loss in the Protexa(®) group than in the TiLOOP(®) Bra group (7 versus 2; p < 0.0001). An inverted T-incision technique led to significantly more complications and reconstructive failure with Protexa(®) (p = 0.037, p = 0.012, respectively). There were no significant differences in patients' satisfaction with cosmetic results (p = 0.632), but surgeons and external specialists graded significantly better outcomes with TiLOOP(®) Bra (p = 0.034, p = 0.032). CONCLUSION This pilot study showed use of TiLOOP(®) Bra or Protexa(®) in IBBR is feasible leading to good cosmetic outcomes and high patient satisfaction. To validate the higher failure rates in the Protexa(®) group, data from a larger trial are required. NCT02562170.
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Affiliation(s)
- D Gschwantler-Kaulich
- Medical University of Vienna, Breast Cancer Center, Department of Gynaecological Oncology, Waehringer Guertel 18-20, 1090 Vienna, Austria.
| | - P Schrenk
- AKH Linz Breast Cancer Center, Krankenhausstrasse 9, 4021 Linz, Austria
| | - V Bjelic-Radisic
- Medical University of Graz, Department of Gynaecology, Auenbruggerplatz 1, 8036 Graz, Austria
| | - K Unterrieder
- Private Hospital Villach, Breast Cancer Center, Department of Gynaecology, Dr.-Walter-Hochsteiner-Straße 4, 9504 Villach, Austria
| | - C Leser
- Medical University of Vienna, Breast Cancer Center, Department of Gynaecological Oncology, Waehringer Guertel 18-20, 1090 Vienna, Austria
| | - A Fink-Retter
- Medical University of Vienna, Breast Cancer Center, Department of Gynaecological Oncology, Waehringer Guertel 18-20, 1090 Vienna, Austria
| | - M Salama
- Otto Wagner Hospital, Department of Surgery, Baumgartner Hoehe 1, 1140 Vienna, Austria
| | - C Singer
- Medical University of Vienna, Breast Cancer Center, Department of Gynaecological Oncology, Waehringer Guertel 18-20, 1090 Vienna, Austria
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Leser C, Hartmann AL, Praml G, Wüthrich B. The "egg-egg" syndrome: occupational respiratory allergy to airborne egg proteins with consecutive ingestive egg allergy in the bakery and confectionery industry. J Investig Allergol Clin Immunol 2002; 11:89-93. [PMID: 11642578] [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: 02/22/2023] Open
Abstract
Allergies to various inhalative allergens are a serious problem in the bakery and confectionery industry. Sensitization to wheat flour and enzymes such as alpha-amylase are a frequent cause of occupational asthma. Airborne egg allergens have been reported as another cause of respiratory allergy. We examined bakery and confectionery workers with respiratory symptoms due to egg aerosols. Skin tests (SPT), scratch tests (ST), nasal provocation tests (NPT) and serological examinations (IgE) were performed. Lung function was assessed by spirometry, and continuous registration of aerosols and particulates as well as gravimetric sampling was done at the workplace. Four bakery and two confectionery workers intensively exposed to airborne egg proteins suffered from conjunctivitis and rhinitis, four also from asthma. Subsequently, three of these four workers reported symptoms after ingestion of food that contained egg. SPT with commercial egg white and egg yolk extracts were negative in four cases. Only two employees had clearly positive SPT to commercial egg allergens and reacted also to wheat flour extracts. Scratch tests with native egg proteins were positive in four employees. Specific IgE to egg white and egg yolk were positive (CAP > or = 2) in three and in four cases, respectively, whereas they were negative in two cases. Elevated levels of specific IgE to lysozyme were detected in four employees. Two workers were sensitized to lysozyme but not to other egg proteins. The clinical relevance of egg sensitization was confirmed by continuous air sampling and by correlating the onset of the respiratory symptoms which were reflected by a significant decline (> or = 30%) of the forced one second capacity (FEV1) in two workers. Sieving of egg white powder and an inadequate spray station for liquid eggs were identified as sources of excessive allergen exposure. Bakery and confectionery workers exposed to airborne egg proteins are at risk of developing occupational asthma and subsequent nutritive egg allergy. To our knowledge, these are the first cases of inhalative egg allergy and subsequent nutritive egg allergy reported in the literature, which we refer to as the "egg-egg syndrome" in analogy to the already known "bird-egg" and "egg-bird" syndromes.
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Affiliation(s)
- C Leser
- Department of Dermatology, University Hospital, Zurich, Switzerland
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Affiliation(s)
- G Senti
- Department of Dermatology, University Hospital, Zurich, Switzerland
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Leser C, Rothe TB, Karrer WL. [Rehabilitation of cystic fibrosis in adulthood]. Praxis (Bern 1994) 1997; 86:1984-1990. [PMID: 9465725] [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] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
By the example of 2 adult patients with cystic fibrosis (CF) problems of pulmonary manifestation of CF and its complications are discussed. In both patients disease manifested late. Life expectancy of CF-patients has markedly increased over the last decades. In the adult distinct complications appear more often such as exacerbation of bronchitis due to pseudomonas aeruginosa, colonisation of air ways by Burkholderia cepacia or by atypical mycobacteria, development of allergic bronchopulmonary aspergillosis, bronchiectases and spontaneous pneumothorax. Today, even in adults with chronic bronchitis of unknown origin the possibility of CF has to be considered. Optimized treatment under clinical conditions, in combination with a physical training program and a diet rich in calories will ameliorate subjective physical performance as well as objective pulmonary function and work capacity. Regular rehabilitation programs contribute to better compliance. In patients with CF direct transition from pediatric to pneumologic/internistic treatment for adults is mandatory in order to optimize expectancy and quality of life.
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Affiliation(s)
- C Leser
- Luzerner Höhenklinik, Montana
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Leser C, Bolliger CT, Winnewisser J, Burkart F, Perruchoud AP. Pulmonary oedema and hypotension induced by hydrochlorothiazide. Monaldi Arch Chest Dis 1994; 49:308-10. [PMID: 8000416] [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: 01/28/2023] Open
Abstract
We present the case of a patient with acute onset of dyspnoea after a long-distance flight. Pulmonary embolism was suspected, but could be excluded by perfusion scintigraphy. The electrocardiogram and chest X-ray were compatible with acute myocardial infarction and pulmonary oedema, but the slightness of the elevation of pulmonary capillary wedge pressure allowed cardiogenic pulmonary oedema to be excluded. The clinical picture was then interpreted as pneumonia with sepsis and hypotension. The rapid and full clinical recovery within 48 h, together with the close temporal relationship of ingestion of hydrochlorothiazide and the onset of symptoms, allowed the diagnosis of drug-induced pulmonary oedema and anaphylactoid hypotension.
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Affiliation(s)
- C Leser
- Division of Pneumology, University Hospital of Basel, Switzerland
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Abstract
Immunoblotting, radioallergosorbent test (RAST), and enzyme-linked immunosorbent assay (ELISA) were performed to determine specific IgE and IgG responses to Aspergillus fumigatus (Af) allergens (IgE-Af; IgG-Af). Serology results were compared in patients with allergic bronchopulmonary aspergillosis (ABPA) (n = 43), patients with Aspergillus fumigatus-associated asthma (Af-asthma) (n = 26), and healthy individuals (n = 3). In patients with different clinical phases of ABPA, three specific immunopatterns were found by immunoblotting. It is proposed to classify ABPA into the active, intermediate, and remission phase with respect to the specific immunoresponse to Af-allergens and asthma symptoms. First, the active phase of ABPA is characterized by a fully developed specific immunoresponse to Af-allergens and severe asthma. Second, the intermediate phase includes patients with elevated specific immunologic findings without asthma symptoms. Third, the remission phase is characterized by a weak specific immunoresponse to Af-allergens after a long-term asymptomatic period. No correlation occurred between specific immunopatterns and irreversible brochopulmonary lesions. The IgE-Af RAST and IgG-Af ELISA titers of patients with ABPA in the active and intermediate phase were significantly higher compared with patients with ABPA in remission phase and with patients with Af-asthma. In particular, the demonstration of positive IgG-Af ELISA titer generally allows the serologic discrimination of patients with asthma and ABPA from patients with Af-asthma in clinical practice. The present study revealed that immunoblots of most patients with Af-asthma were negative. Immunoblotting demonstrated an IgG reactivity exclusively to low molecular weight (MW) Af-allergens in 8 out of 26 patients with Af-asthma and in the three healthy individuals, and this IgG response may reflect naturally occurring antibodies.
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Affiliation(s)
- C Leser
- Hochgebirgsklinik Davos-Wolfgang, Asthma- and Allergy Clinic, Switzerland
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Jones TK, Burston WA, Eikenberg S, Leser C, Miller RH, Mock ES. Use of a portable X-ray device during Operation Desert Storm. Gen Dent 1992; 40:210-1. [PMID: 1499973] [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: 12/27/2022]
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22
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Razemon P, Dascotte JC, Leser C. [Our experience with the tonometric effect of timolol]. Bull Soc Ophtalmol Fr 1979; 79:749-52. [PMID: 555367] [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: 12/23/2022]
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Razemon P, Leser C, François P. [Clinical evaluation of a 0.5% epinephrine-pilocarpine combination]. Bull Soc Ophtalmol Fr 1976; 76:717-20. [PMID: 1029563] [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: 12/25/2022]
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Corbel MM, Leser C, François P. [Notes on 0.03% phospholine iodide, with more than 4 years' experience]. Bull Soc Ophtalmol Fr 1976; 76:249-50. [PMID: 1024748] [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: 12/25/2022]
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Dhoine G, Leser C, Asseman R, Razemon P. [Unilateral capsular pseudo-exfoliation]. Bull Soc Ophtalmol Fr 1974; 74:475-6. [PMID: 4468148] [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: 01/10/2023]
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26
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Asseman R, Leser C. [Trabeculotomy during a very advanced glaucoma in the adult]. Bull Soc Ophtalmol Fr 1973; 73:1191-3. [PMID: 4803753] [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: 01/12/2023]
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27
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Corbel M, Leser C, François P, Razemon P. [Long term results of 0,03 per cent phospholin iodide in serveral ocular hypertonia]. Bull Soc Ophtalmol Fr 1973; 73:455-60. [PMID: 4792544] [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: 01/12/2023]
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Asseman R, Razemon P, Corbel M, Leser C. [Trabeculotomy in adult glaucoma. Various results]. Bull Soc Ophtalmol Fr 1973; 73:461-4. [PMID: 4792545] [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: 01/12/2023]
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29
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Razemon P, Dufour D, Leser C. [Eales' disease and multiple sclerosis. Report of new cases]. Bull Soc Ophtalmol Fr 1972; 72:1143-6. [PMID: 4667839] [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: 01/11/2023]
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30
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Corbel M, Leser C, Lemaire E. [Absence of cataractogenic effect of 0.03 percent phospholine iodide]. Bull Soc Ophtalmol Fr 1971; 71:885-9. [PMID: 5151034] [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: 01/14/2023]
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Corbel M, François P, Leser C, Lemaire E. [Tonometric stabilization with 0.03 per cent phospholine in primary hypertonia]. Bull Soc Ophtalmol Fr 1971; 71:184-90. [PMID: 5120576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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32
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Dufour D, Guilbert F, Leser C. [Segmentary periarteritis of the retina]. Bull Soc Ophtalmol Fr 1970; 70:602-6. [PMID: 5474603] [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: 01/15/2023]
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Beal F, Dufour D, Leser C. [Vogt method of radiography while disengaging the eyeball]. Bull Soc Ophtalmol Fr 1968; 68:122-124. [PMID: 5698075] [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: 05/21/2023]
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34
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Corbel M, Leser C, Gibault R. [Tonometric stabilization in combined cataract-glaucoma surgical interventions]. Bull Soc Ophtalmol Fr 1968; 68:85-9. [PMID: 5698096] [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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