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Pontiggia L, Michalak-Micka K, Hürlimann N, Yosef HK, Böni R, Klar AS, Ehrbar M, Ochsenbein-Kölble N, Biedermann T, Moehrlen U. Raman Spectroscopy Analysis of Human Amniotic Fluid Cells from fetuses with Myelomeningocele. Exp Cell Res 2024:114048. [PMID: 38697275 DOI: 10.1016/j.yexcr.2024.114048] [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] [Received: 02/15/2024] [Revised: 04/11/2024] [Accepted: 04/13/2024] [Indexed: 05/04/2024]
Abstract
Prenatal surgery for the treatment of spina bifida (myelomeningocele, MMC) significantly enhances the neurological prognosis of the patient. To ensure better protection of the spinal cord by large defects, the application of skin grafts produced with cells gained from the amniotic fluid is presently studied. In order to determine the most appropriate cells for this purpose, we tried to shed light on the extremely complex amniotic fluid cellular composition in healthy and MMC pregnancies. We exploited the potential of micro-Raman spectroscopy to analyse and characterize human amniotic fluid cells in total and putative (cKit/CD117-positive) stem cells of fetuses with MMC in comparison with amniotic fluid cells from healthy individuals, human fetal dermal fibroblasts and adult adipose derived stem cells. We found that (i) the differences between healthy and MMC amniocytes can be attributed to specific spectral regions involving collagen, lipids, sugars, tryptophan, aspartate, glutamate, and carotenoids, (ii) MMC amniotic fluid contains two particular cell populations which are absent or reduced in normal pregnancies, (iii) the cKit-negative healthy amniocyte subpopulation shares molecular features with human fetal fibroblasts. On the one hand we demonstrate a different amniotic fluid cellular composition in healthy and MMC pregnancies, on the other our work confirms micro-Raman spectroscopy to be a valuable tool for discriminating cell populations in unknown mixtures of cells.
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Affiliation(s)
- Luca Pontiggia
- Tissue Biology Research Unit, Department of Pediatric Surgery, University Children's Hospital Zurich, 8032 Zurich, Switzerland; Children's Research Center, University Children's Hospital Zurich, 8032 Zurich, Switzerland
| | - Katarzyna Michalak-Micka
- Tissue Biology Research Unit, Department of Pediatric Surgery, University Children's Hospital Zurich, 8032 Zurich, Switzerland; Children's Research Center, University Children's Hospital Zurich, 8032 Zurich, Switzerland
| | - Nadine Hürlimann
- Tissue Biology Research Unit, Department of Pediatric Surgery, University Children's Hospital Zurich, 8032 Zurich, Switzerland; Children's Research Center, University Children's Hospital Zurich, 8032 Zurich, Switzerland
| | | | - Roland Böni
- White House Center for Liposuction, Zurich, Switzerland
| | - Agnes S Klar
- Tissue Biology Research Unit, Department of Pediatric Surgery, University Children's Hospital Zurich, 8032 Zurich, Switzerland; Children's Research Center, University Children's Hospital Zurich, 8032 Zurich, Switzerland; University of Zurich, 8091 Zurich, Switzerland
| | - Martin Ehrbar
- Zurich Center for Fetal Diagnosis and Treatment, 8032 Zurich, Switzerland; University of Zurich, 8091 Zurich, Switzerland; Department of Obstetrics, University Hospital of Zurich, Zurich, Switzerland
| | - Nicole Ochsenbein-Kölble
- Zurich Center for Fetal Diagnosis and Treatment, 8032 Zurich, Switzerland; Department of Obstetrics, University Hospital of Zurich, Zurich, Switzerland
| | - Thomas Biedermann
- Tissue Biology Research Unit, Department of Pediatric Surgery, University Children's Hospital Zurich, 8032 Zurich, Switzerland; Children's Research Center, University Children's Hospital Zurich, 8032 Zurich, Switzerland; University of Zurich, 8091 Zurich, Switzerland
| | - Ueli Moehrlen
- Tissue Biology Research Unit, Department of Pediatric Surgery, University Children's Hospital Zurich, 8032 Zurich, Switzerland; Spina Bifida Center, University Children's Hospital Zurich, Zurich, Switzerland; Zurich Center for Fetal Diagnosis and Treatment, 8032 Zurich, Switzerland; Children's Research Center, University Children's Hospital Zurich, 8032 Zurich, Switzerland; University of Zurich, 8091 Zurich, Switzerland.
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2
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Rogner D, Heimerl L, Heyer S, Biedermann T, Sattler E, Zink A. Patients' perspective, quality of life and treatment goals in Hailey-Hailey disease: Lessons learned from the German National Registry. J Eur Acad Dermatol Venereol 2024; 38:419-429. [PMID: 37863661 DOI: 10.1111/jdv.19583] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 09/06/2023] [Indexed: 10/22/2023]
Abstract
BACKGROUND Hailey-Hailey disease (HHD) remains a difficult-to-treat dermatosis and little is known about the patient's perception of the disease activity, the treatment success and its impact on quality-of-life (QoL). OBJECTIVE To obtain better understanding of HHD patients' needs regarding their medical condition, financial burden, QoL, subjective well-being and treatment thereof as well as satisfaction to evaluate common treatments' 'real-life' relevance. METHODS With initiation of the national registry for Darier's disease (DD; Morbus Darier, MD) and Hailey-Hailey disease (HH) MDHHgermany, patients with HHD diagnosis were included starting June 2020. To assess subjective symptoms, patients filled out questionnaires such as the DLQI (dermatological life quality index), numeric rating scale (NRS) for itch, pain and burning sensation, as well as the SWLS (satisfaction with life scale) questionnaire to quantify overall satisfaction in life. Additionally, data on therapies were collected along with the patients' satisfaction of those and their medical care. Furthermore, patients assessed financial aspects and work ability. RESULTS One hundred and two patients were recruited from dermatology clinics, office-based dermatologists and self-help platforms across Germany between June 2020 and February 2023, 90 were eligible and analysed (mean: 49.91 years, 73.33% females, 26.67% males). 39.77% stated according to the DLQI their life is severely/very severely affected. Satisfaction with life was mediocre. Burning sensation was most pronounced among subjective symptoms (NRS 5.85 ± 2.80). Systemic treatments were rated as ineffective according to 56.92%, 25.56% had never received one. Most prescribed systemic treatments were corticosteroids (73.8%), followed by low-dose naltrexone (LDN) (26.2%), retinoids (15.4%) and antibiotics (13.8%). Satisfaction with medical care was generally low. CONCLUSION Our 'real-life' data state a major disease burden and impact on the QoL for affected individuals, as well as limited disease control due to inadequate therapies. MDHHgermany can provide insights into improvement of healthcare support with this debilitating disease and improve QoL. In the long term, it aims to provide basis for further clinical trials, epidemiological studies and immunological investigations.
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Affiliation(s)
- D Rogner
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany
| | - L Heimerl
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany
- Department of Pharmacology and Toxicology, Rheinische Friedrich-Wilhelms-University Bonn, Bonn, Germany
| | - S Heyer
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany
| | - T Biedermann
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany
| | - E Sattler
- Department of Dermatology and Allergy, University Hospital, LMU Munich, Munich, Germany
| | - A Zink
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany
- Division of Dermatology and Venereology, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
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3
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Michalak-Micka K, Tenini C, Böttcher-Haberzeth S, Mazzone L, Pontiggia L, Klar AS, Moehrlen U, Biedermann T. The expression pattern of cytokeratin 6a in epithelial cells of different origin in dermo-epidermal skin substitutes in vivo. Biotechnol J 2024; 19:e2300246. [PMID: 37766482 DOI: 10.1002/biot.202300246] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 08/30/2023] [Accepted: 09/25/2023] [Indexed: 09/29/2023]
Abstract
Keratinocytes are the predominant cell type of skin epidermis. Through the programmed process of differentiation, they form a cornified envelope that provides a physical protective barrier against harmful external environment. Keratins are major structural proteins of keratinocytes that together with actin filaments and microtubules form the cytoskeleton of these cells. In this study, we examined the expression pattern and distribution of cytokeratin 6a (CK6a) in healthy human skin samples of different body locations, in fetal and scar skin samples, as well as in dermo-epidermal skin substitutes (DESSs). We observed that CK6a expression is significantly upregulated in fetal skin and scar tissue as well as in skin grafts after short-term transplantation. Importantly, the abundance of CK6a corresponds directly to the expression pattern of wound healing marker CK16. We postulate that CK6a is a useful marker to accurately evaluate the homeostatic state of DESSs.
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Affiliation(s)
- Katarzyna Michalak-Micka
- Tissue Biology Research Unit, Department of Surgery, University Children's Hospital Zurich, Zurich, Switzerland
- Children's Research Center (CRC), University Children's Hospital Zurich, Zurich, Switzerland
| | - Celina Tenini
- Tissue Biology Research Unit, Department of Surgery, University Children's Hospital Zurich, Zurich, Switzerland
- Children's Research Center (CRC), University Children's Hospital Zurich, Zurich, Switzerland
| | - Sophie Böttcher-Haberzeth
- Tissue Biology Research Unit, Department of Surgery, University Children's Hospital Zurich, Zurich, Switzerland
- Children's Research Center (CRC), University Children's Hospital Zurich, Zurich, Switzerland
- University of Zurich, Zurich, Switzerland
| | - Luca Mazzone
- Children's Research Center (CRC), University Children's Hospital Zurich, Zurich, Switzerland
- Spina Bifida Center, University Children's Hospital Zurich, Zurich, Switzerland
- The Zurich Center for Fetal Diagnosis and Therapy, University of Zurich, Zurich, Switzerland
| | - Luca Pontiggia
- Tissue Biology Research Unit, Department of Surgery, University Children's Hospital Zurich, Zurich, Switzerland
- Children's Research Center (CRC), University Children's Hospital Zurich, Zurich, Switzerland
| | - Agnes S Klar
- Tissue Biology Research Unit, Department of Surgery, University Children's Hospital Zurich, Zurich, Switzerland
- Children's Research Center (CRC), University Children's Hospital Zurich, Zurich, Switzerland
| | - Ueli Moehrlen
- Children's Research Center (CRC), University Children's Hospital Zurich, Zurich, Switzerland
- University of Zurich, Zurich, Switzerland
- Spina Bifida Center, University Children's Hospital Zurich, Zurich, Switzerland
- The Zurich Center for Fetal Diagnosis and Therapy, University of Zurich, Zurich, Switzerland
| | - Thomas Biedermann
- Tissue Biology Research Unit, Department of Surgery, University Children's Hospital Zurich, Zurich, Switzerland
- Children's Research Center (CRC), University Children's Hospital Zurich, Zurich, Switzerland
- University of Zurich, Zurich, Switzerland
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Zielinska D, Fisch P, Moehrlen U, Finkielsztein S, Linder T, Zenobi-Wong M, Biedermann T, Klar AS. Combining bioengineered human skin with bioprinted cartilage for ear reconstruction. Sci Adv 2023; 9:eadh1890. [PMID: 37792948 PMCID: PMC10550230 DOI: 10.1126/sciadv.adh1890] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 09/01/2023] [Indexed: 10/06/2023]
Abstract
Microtia is a congenital disorder that manifests as a malformation of the external ear leading to psychosocial problems in affected children. Here, we present a tissue-engineered treatment approach based on a bioprinted autologous auricular cartilage construct (EarCartilage) combined with a bioengineered human pigmented and prevascularized dermo-epidermal skin substitute (EarSkin) tested in immunocompromised rats. We confirmed that human-engineered blood capillaries of EarSkin connected to the recipient's vasculature within 1 week, enabling rapid blood perfusion and epidermal maturation. Bioengineered EarSkin displayed a stratified epidermis containing mature keratinocytes and melanocytes. The latter resided within the basal layer of the epidermis and efficiently restored the skin color. Further, in vivo tests demonstrated favorable mechanical stability of EarCartilage along with enhanced extracellular matrix deposition. In conclusion, EarCartilage combined with EarSkin represents a novel approach for the treatment of microtia with the potential to circumvent existing limitations and improve the aesthetic outcome of microtia reconstruction.
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Affiliation(s)
- Dominika Zielinska
- Tissue Biology Research Unit, University Children’s Hospital Zurich, University of Zurich, Zurich, Switzerland
- Children’s Research Center, University Children’s Hospital Zurich, Zurich, Switzerland
- University of Zurich, Zurich, Switzerland
| | - Philipp Fisch
- Tissue Engineering and Biofabrication Laboratory, Department of Health Sciences and Technology, ETH Zurich, Switzerland
| | - Ueli Moehrlen
- Tissue Biology Research Unit, University Children’s Hospital Zurich, University of Zurich, Zurich, Switzerland
- Children’s Research Center, University Children’s Hospital Zurich, Zurich, Switzerland
- University of Zurich, Zurich, Switzerland
| | | | - Thomas Linder
- Klinik für Hals-, Nasen-, Ohren- und Gesichtschirurgie, Luzerner Kantonsspital, Luzern, Switzerland
| | - Marcy Zenobi-Wong
- Tissue Engineering and Biofabrication Laboratory, Department of Health Sciences and Technology, ETH Zurich, Switzerland
| | - Thomas Biedermann
- Tissue Biology Research Unit, University Children’s Hospital Zurich, University of Zurich, Zurich, Switzerland
- Children’s Research Center, University Children’s Hospital Zurich, Zurich, Switzerland
- University of Zurich, Zurich, Switzerland
| | - Agnes S. Klar
- Tissue Biology Research Unit, University Children’s Hospital Zurich, University of Zurich, Zurich, Switzerland
- Children’s Research Center, University Children’s Hospital Zurich, Zurich, Switzerland
- University of Zurich, Zurich, Switzerland
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5
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Ademi H, Michalak-Micka K, Moehrlen U, Biedermann T, Klar AS. Effects of an Adipose Mesenchymal Stem Cell-Derived Conditioned medium and TGF-β1 on Human Keratinocytes In Vitro. Int J Mol Sci 2023; 24:14726. [PMID: 37834173 PMCID: PMC10572767 DOI: 10.3390/ijms241914726] [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: 08/16/2023] [Revised: 09/06/2023] [Accepted: 09/27/2023] [Indexed: 10/15/2023] Open
Abstract
Human keratinocytes play a crucial role during skin wound healing and in skin replacement therapies. The secretome of adipose-derived stem cells (ASCs) has been shown to secrete pro-healing factors, among which include TGF-β1, which is essential for keratinocyte migration and the re-epithelialization of cutaneous wounds during skin wound healing. The benefits of an ASC conditioned medium (ASC-CM) are primarily orchestrated by trophic factors that mediate autocrine and paracrine effects in keratinocytes. Here, we evaluated the composition and the innate characteristics of the ASC secretome and its biological effects on keratinocyte maturation and wound healing in vitro. In particular, we detected high levels of different growth factors, such as HGF, FGFb, and VEGF, and other factors, such as TIMP1 and 4, IL8, PAI-1, uPA, and IGFBP-3, in the ASC-CM. Further, we investigated, using immunofluorescence and flow cytometry, the distinct effects of a human ASC-CM and/or synthetic TGF-β1 on human keratinocyte proliferation, migration, and cell apoptosis suppression. We demonstrated that the ASC-CM increased keratinocyte proliferation as compared to TGF-β1 treatment. Further, we found that the ASC-CM exerted cell cycle progression in keratinocytes via regulating the phases G1, S, and G2/M. In particular, cells subjected to the ASC-CM demonstrated increased DNA synthesis (S phase) compared to the TGF-β1-treated KCs, which showed a pronounced G0/G1 phase. Furthermore, both the ASC-CM and TGF-β1 conditions resulted in a decreased expression of the late differentiation marker CK10 in human keratinocytes in vitro, whereas both treatments enhanced transglutaminase 3 and loricrin expression. Interestingly, the ASC-CM promoted significantly increased numbers of keratinocytes expressing epidermal basal keratinocyte markers, such DLL1 and Jagged2 Notch ligands, whereas those ligands were significantly decreased in TGF-β1-treated keratinocytes. In conclusion, our findings suggest that the ASC-CM is a potent stimulator of human keratinocyte proliferation in vitro, particularly supporting basal keratinocytes, which are crucial for a successful skin coverage after transplantation. In contrast, TGF-β1 treatment decreased keratinocyte proliferation and specifically increased the expression of differentiation markers in vitro.
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Affiliation(s)
- Hyrije Ademi
- Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital Zurich, 8952 Schlieren, Switzerland
- Children’s Research Center, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- Faculty of Medicine, University of Zurich, 8032 Zurich, Switzerland
| | - Katarzyna Michalak-Micka
- Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital Zurich, 8952 Schlieren, Switzerland
- Children’s Research Center, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- Faculty of Medicine, University of Zurich, 8032 Zurich, Switzerland
| | - Ueli Moehrlen
- Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital Zurich, 8952 Schlieren, Switzerland
- Children’s Research Center, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- Faculty of Medicine, University of Zurich, 8032 Zurich, Switzerland
- Department of Surgery, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
| | - Thomas Biedermann
- Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital Zurich, 8952 Schlieren, Switzerland
- Children’s Research Center, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- Faculty of Medicine, University of Zurich, 8032 Zurich, Switzerland
| | - Agnes S. Klar
- Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital Zurich, 8952 Schlieren, Switzerland
- Children’s Research Center, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- Faculty of Medicine, University of Zurich, 8032 Zurich, Switzerland
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6
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Zielinska D, Yosef HK, Zollitsch T, Kern J, Jakob Y, Gvaramia D, Rotter N, Pontiggia L, Moehrlen U, Biedermann T, Klar AS. Characterization of Distinct Chondrogenic Cell Populations of Patients Suffering from Microtia Using Single-Cell Micro-Raman Spectroscopy. Biomedicines 2023; 11:2588. [PMID: 37761029 PMCID: PMC10526501 DOI: 10.3390/biomedicines11092588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 08/29/2023] [Accepted: 09/04/2023] [Indexed: 09/29/2023] Open
Abstract
Microtia is a congenital condition of abnormal development of the outer ear. Tissue engineering of the ear is an alternative treatment option for microtia patients. However, for this approach, the identification of high regenerative cartilage progenitor cells is of vital importance. Raman analysis provides a novel, non-invasive, label-free diagnostic tool to detect distinctive biochemical features of single cells or tissues. Using micro-Raman spectroscopy, we were able to distinguish and characterize the particular molecular fingerprints of differentiated chondrocytes and perichondrocytes and their respective progenitors isolated from healthy individuals and microtia patients. We found that microtia chondrocytes exhibited lower lipid concentrations in comparison to healthy cells, thus indicating the importance of fat storage. Moreover, we suggest that collagen is a useful biomarker for distinguishing between populations obtained from the cartilage and perichondrium because of the higher spectral contributions of collagen in the chondrocytes compared to perichondrocytes from healthy individuals and microtia patients. Our results represent a contribution to the identification of cell markers that may allow the selection of specific cell populations for cartilage tissue engineering. Moreover, the observed differences between microtia and healthy cells are essential for gaining better knowledge of the cause of microtia. It can be useful for designing novel treatment options based on further investigations of the discovered biochemical substrate alterations.
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Affiliation(s)
- Dominika Zielinska
- Tissue Biology Research Unit, University Children’s Hospital Zurich, 8952 Schlieren, Switzerland
- Children’s Research Center, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- Faculty of Medicine, University of Zurich, 8032 Zurich, Switzerland
| | - Hesham K. Yosef
- Faculty of Medicine, University of Zurich, 8032 Zurich, Switzerland
- microphotonXGmbH, 82327 Tutzing, Germany
| | | | - Johann Kern
- Department of Otorhinolaryngology, Head and Neck Surgery, Medical Faculty Mannheim, University of Heidelberg, 68167 Mannheim, Germany
| | - Yvonne Jakob
- Department of Otorhinolaryngology, Head and Neck Surgery, Medical Faculty Mannheim, University of Heidelberg, 68167 Mannheim, Germany
| | - David Gvaramia
- Department of Otorhinolaryngology, Head and Neck Surgery, Medical Faculty Mannheim, University of Heidelberg, 68167 Mannheim, Germany
| | - Nicole Rotter
- Department of Otorhinolaryngology, Head and Neck Surgery, Medical Faculty Mannheim, University of Heidelberg, 68167 Mannheim, Germany
| | - Luca Pontiggia
- Tissue Biology Research Unit, University Children’s Hospital Zurich, 8952 Schlieren, Switzerland
- Children’s Research Center, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- Faculty of Medicine, University of Zurich, 8032 Zurich, Switzerland
| | - Ueli Moehrlen
- Tissue Biology Research Unit, University Children’s Hospital Zurich, 8952 Schlieren, Switzerland
- Children’s Research Center, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- Faculty of Medicine, University of Zurich, 8032 Zurich, Switzerland
- Department of Surgery, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
| | - Thomas Biedermann
- Tissue Biology Research Unit, University Children’s Hospital Zurich, 8952 Schlieren, Switzerland
- Children’s Research Center, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- Faculty of Medicine, University of Zurich, 8032 Zurich, Switzerland
| | - Agnes S. Klar
- Tissue Biology Research Unit, University Children’s Hospital Zurich, 8952 Schlieren, Switzerland
- Children’s Research Center, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- Faculty of Medicine, University of Zurich, 8032 Zurich, Switzerland
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7
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Dasargyri A, González Rodríguez D, Rehrauer H, Reichmann E, Biedermann T, Moehrlen U. scRNA-Seq of Cultured Human Amniotic Fluid from Fetuses with Spina Bifida Reveals the Origin and Heterogeneity of the Cellular Content. Cells 2023; 12:1577. [PMID: 37371048 DOI: 10.3390/cells12121577] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 05/15/2023] [Accepted: 05/25/2023] [Indexed: 06/29/2023] Open
Abstract
Amniotic fluid has been proposed as an easily available source of cells for numerous applications in regenerative medicine and tissue engineering. The use of amniotic fluid cells in biomedical applications necessitates their unequivocal characterization; however, the exact cellular composition of amniotic fluid and the precise tissue origins of these cells remain largely unclear. Using cells cultured from the human amniotic fluid of fetuses with spina bifida aperta and of a healthy fetus, we performed single-cell RNA sequencing to characterize the tissue origin and marker expression of cultured amniotic fluid cells at the single-cell level. Our analysis revealed nine different cell types of stromal, epithelial and immune cell phenotypes, and from various fetal tissue origins, demonstrating the heterogeneity of the cultured amniotic fluid cell population at a single-cell resolution. It also identified cell types of neural origin in amniotic fluid from fetuses with spina bifida aperta. Our data provide a comprehensive list of markers for the characterization of the various progenitor and terminally differentiated cell types in cultured amniotic fluid. This study highlights the relevance of single-cell analysis approaches for the characterization of amniotic fluid cells in order to harness their full potential in biomedical research and clinical applications.
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Affiliation(s)
- Athanasia Dasargyri
- Tissue Biology Research Unit, Department of Surgery, University Children's Hospital Zurich, 8032 Zurich, Switzerland
| | - Daymé González Rodríguez
- Functional Genomics Center Zurich, ETH Zurich and University of Zurich, 8057 Zurich, Switzerland
| | - Hubert Rehrauer
- Functional Genomics Center Zurich, ETH Zurich and University of Zurich, 8057 Zurich, Switzerland
| | - Ernst Reichmann
- Tissue Biology Research Unit, Department of Surgery, University Children's Hospital Zurich, 8032 Zurich, Switzerland
| | - Thomas Biedermann
- Tissue Biology Research Unit, Department of Surgery, University Children's Hospital Zurich, 8032 Zurich, Switzerland
- Faculty of Medicine, University of Zurich, 8006 Zurich, Switzerland
| | - Ueli Moehrlen
- Tissue Biology Research Unit, Department of Surgery, University Children's Hospital Zurich, 8032 Zurich, Switzerland
- Faculty of Medicine, University of Zurich, 8006 Zurich, Switzerland
- Zurich Center for Fetal Diagnosis and Therapy, University of Zurich, 8006 Zurich, Switzerland
- Pediatric Surgery, University Children's Hospital Zurich, 8032 Zurich, Switzerland
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8
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Nau T, Schönmann C, Hindelang B, Riobo L, Doll A, Schneider S, Englert L, He H, Biedermann T, Darsow U, Lauffer F, Ntziachristos V, Aguirre J. Raster-scanning optoacoustic mesoscopy biomarkers for atopic dermatitis skin lesions. Photoacoustics 2023; 31:100513. [PMID: 37275325 PMCID: PMC10236218 DOI: 10.1016/j.pacs.2023.100513] [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] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 05/10/2023] [Accepted: 05/19/2023] [Indexed: 06/07/2023]
Abstract
Atopic dermatitis (AD) is the most common chronic inflammatory skin disease worldwide. Its severity is assessed using scores that rely on visual observation of the affected body surface area, the morphology of the lesions and subjective symptoms, like pruritus or insomnia. Ideally, such scores should be complemented by objective and accurate measurements of disease severity to standardize disease scoring in routine care and clinical trials. Recently, it was shown that raster-scanning optoacoustic mesoscopy (RSOM) can provide detailed three-dimensional images of skin inflammation processes that capture the most relevant features of their pathology. Moreover, precise RSOM biomarkers of inflammation have been identified for psoriasis. However, the objectivity and validity of such biomarkers in repeated measurements have not yet been assessed for AD. Here, we report the results of a study on the repeatability of RSOM inflammation biomarkers in AD to estimate their precision. Optoacoustic imaging analysis revealed morphological inflammation biomarkers with precision well beyond standard clinical severity metrics. Our findings suggest that optoacoustic mesoscopy may be a good choice for quantitative evaluations of AD that are inaccessible by other methods. This could potentially enable the optimization of disease scoring and drug development.
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Affiliation(s)
- T. Nau
- Department of Dermatology and Allergology, Technical University of Munich, Munich, Germany
- Chair of Biological Imaging, Technical University of Munich, 81675 Munich, Germany
- Institute of Biological and Medical Imaging, Helmholtz Zentrum Munich, 85764 Neuherberg, Germany
| | - C. Schönmann
- Department of Dermatology and Allergology, Technical University of Munich, Munich, Germany
- Chair of Biological Imaging, Technical University of Munich, 81675 Munich, Germany
- Institute of Biological and Medical Imaging, Helmholtz Zentrum Munich, 85764 Neuherberg, Germany
| | - B. Hindelang
- Department of Dermatology and Allergology, Technical University of Munich, Munich, Germany
- Chair of Biological Imaging, Technical University of Munich, 81675 Munich, Germany
- Institute of Biological and Medical Imaging, Helmholtz Zentrum Munich, 85764 Neuherberg, Germany
| | - L. Riobo
- Chair of Biological Imaging, Technical University of Munich, 81675 Munich, Germany
- Institute of Biological and Medical Imaging, Helmholtz Zentrum Munich, 85764 Neuherberg, Germany
| | - A. Doll
- Department of Dermatology and Allergology, Technical University of Munich, Munich, Germany
| | - S. Schneider
- Department of Dermatology and Allergology, Technical University of Munich, Munich, Germany
- Chair of Biological Imaging, Technical University of Munich, 81675 Munich, Germany
- Institute of Biological and Medical Imaging, Helmholtz Zentrum Munich, 85764 Neuherberg, Germany
| | - L. Englert
- Chair of Biological Imaging, Technical University of Munich, 81675 Munich, Germany
- Institute of Biological and Medical Imaging, Helmholtz Zentrum Munich, 85764 Neuherberg, Germany
| | - H. He
- Chair of Biological Imaging, Technical University of Munich, 81675 Munich, Germany
- Institute of Biological and Medical Imaging, Helmholtz Zentrum Munich, 85764 Neuherberg, Germany
| | - T. Biedermann
- Department of Dermatology and Allergology, Technical University of Munich, Munich, Germany
| | - U. Darsow
- Department of Dermatology and Allergology, Technical University of Munich, Munich, Germany
| | - F. Lauffer
- Department of Dermatology and Allergology, Technical University of Munich, Munich, Germany
| | - V. Ntziachristos
- Chair of Biological Imaging, Technical University of Munich, 81675 Munich, Germany
- Institute of Biological and Medical Imaging, Helmholtz Zentrum Munich, 85764 Neuherberg, Germany
- Munich Institute of Robotics and Machine Intelligence (MIRMI), Technical University of Munich, 81675 Munich, Germany
| | - J. Aguirre
- Chair of Biological Imaging, Technical University of Munich, 81675 Munich, Germany
- Institute of Biological and Medical Imaging, Helmholtz Zentrum Munich, 85764 Neuherberg, Germany
- Departamento de Tecnología Electrónica y de las Comunicaciones, Universidad Autonoma de Madrid, Madrid, Spain
- Instituto de Investigacion Sanitaria de la Fundacion Jimenez Diaz, Madrid, Spain
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9
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Rütsche D, Nanni M, Rüdisser S, Biedermann T, Zenobi-Wong M. Enzymatically Crosslinked Collagen as a Versatile Matrix for In Vitro and In Vivo Co-Engineering of Blood and Lymphatic Vasculature. Adv Mater 2023; 35:e2209476. [PMID: 36724374 DOI: 10.1002/adma.202209476] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 12/30/2022] [Indexed: 06/18/2023]
Abstract
Adequate vascularization is required for the successful translation of many in vitro engineered tissues. This study presents a novel collagen derivative that harbors multiple recognition peptides for orthogonal enzymatic crosslinking based on sortase A (SrtA) and Factor XIII (FXIII). SrtA-mediated crosslinking enables the rapid co-engineering of human blood and lymphatic microcapillaries and mesoscale capillaries in bulk hydrogels. Whereas tuning of gel stiffness determines the extent of neovascularization, the relative number of blood and lymphatic capillaries recapitulates the ratio of blood and lymphatic endothelial cells originally seeded into the hydrogel. Bioengineered capillaries readily form luminal structures and exhibit typical maturation markers both in vitro and in vivo. The secondary crosslinking enzyme Factor XIII is used for in situ tethering of the VEGF mimetic QK peptide to collagen. This approach supports the formation of blood and lymphatic capillaries in the absence of exogenous VEGF. Orthogonal enzymatic crosslinking is further used to bioengineer hydrogels with spatially defined polymer compositions with pro- and anti-angiogenic properties. Finally, macroporous scaffolds based on secondary crosslinking of microgels enable vascularization independent from supporting fibroblasts. Overall, this work demonstrates for the first time the co-engineering of mature micro- and meso-sized blood and lymphatic capillaries using a highly versatile collagen derivative.
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Affiliation(s)
- Dominic Rütsche
- Tissue Engineering + Biofabrication Laboratory, Department of Health Sciences & Technology, ETH Zurich, Otto-Stern-Weg 7, Zurich, 8093, Switzerland
- Tissue Biology Research Unit, Department of Surgery, University Children's Hospital Zurich, Wagistrasse 12, Schlieren, 8952, Switzerland
| | - Monica Nanni
- Tissue Biology Research Unit, Department of Surgery, University Children's Hospital Zurich, Wagistrasse 12, Schlieren, 8952, Switzerland
- Institute for Mechanical Systems, Department of Mechanical and Process Engineering, ETH Zurich, Leonhardstrasse 21, Zurich, 8092, Switzerland
| | - Simon Rüdisser
- Biomolecular NMR Spectroscopy Platform, Department of Biology, ETH Zurich, Hönggerbergring 64, Zurich, 8093, Switzerland
| | - Thomas Biedermann
- Tissue Biology Research Unit, Department of Surgery, University Children's Hospital Zurich, Wagistrasse 12, Schlieren, 8952, Switzerland
| | - Marcy Zenobi-Wong
- Tissue Engineering + Biofabrication Laboratory, Department of Health Sciences & Technology, ETH Zurich, Otto-Stern-Weg 7, Zurich, 8093, Switzerland
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10
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Bent RK, Weinbrenner J, Faihs V, Steffens S, Nau T, Vitus M, Mathes S, Darsow U, Biedermann T, Brockow K. Increasing the COVID-19 immunization rate through allergy testing. J Eur Acad Dermatol Venereol 2023; 37:1228-1235. [PMID: 36808753 DOI: 10.1111/jdv.18979] [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] [Received: 10/10/2022] [Accepted: 02/01/2023] [Indexed: 02/20/2023]
Abstract
BACKGROUND Vaccination of the population is required to combat the COVID-19 pandemic. Allergy testing could reduce anxiety towards COVID-19 vaccination and thereby may increase vaccination rate, however, its effectiveness remains unclear. METHODS One hundred and thirty prospective real-life patients in need of but not daring to get vaccinated asked for allergy workup for COVID-19 vaccine hypersensitivity in 2021/2022. Characterization of patients, identification of anxieties, decrease of patient's anxiety levels, overall vaccination rate and adverse reactions after vaccination were assessed. RESULTS Tested patients were characterized by being female (91.5%) and having a high rate of previous allergies (e.g. to food 55.4%, drugs 54.6%, or previous vaccinations 50%) and dermatological disease (29.2%) but not always had medical contraindications for COVID-19 vaccination. Sixty one patients (49.6%) were highly concerned (4-6, Likert scale 0-6) about vaccination and 47 (37.6%) expressed resolving thoughts about vaccinaion anaphylaxis (3-6, Likert scale 0-6). However only 35 patients (28.5%) were scared of getting COVID-19 within 2 months (4-6, Likert scale 0-6) and only 11 (9%) patients had high expectations of getting COVID-19 (4-6, Likert scale 0-6). Allergy testing significantly (p < 0.01 to p < 0.05 respectively) reduced the median anxiety of allergic symptoms following vaccination: dyspnoea (4.2-3.1), to faint (3.7-2.7), long-term consequences (3.6-2.2), pruritus (3.4-2.6), skin rash (3.3-2.6) and death (3.2-2.6). After allergy testing, most patients (108/122, 88.5%) let themselves be vaccinated within 60 days. Revaccinated patients with previous symptoms experienced a reduction of symptoms (p < 0.05) upon revaccination. CONCLUSIONS Patients not daring to get vaccinated have more anxiety towards vaccination than to acquire COVID-19. For those, allergy testing excludes vaccine allergy, and is a tool to increase vaccination willingness and thereby helps to combat vaccination hesitancy.
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Affiliation(s)
- R K Bent
- Department of Dermatology and Allergy Biederstein, Faculty of Medicine, Technical University of Munich, Munich, Germany
| | - J Weinbrenner
- Department of Dermatology and Allergy Biederstein, Faculty of Medicine, Technical University of Munich, Munich, Germany
| | - V Faihs
- Department of Dermatology and Allergy Biederstein, Faculty of Medicine, Technical University of Munich, Munich, Germany
| | - S Steffens
- Department of Dermatology and Allergy Biederstein, Faculty of Medicine, Technical University of Munich, Munich, Germany
| | - T Nau
- Department of Dermatology and Allergy Biederstein, Faculty of Medicine, Technical University of Munich, Munich, Germany
| | - M Vitus
- Department of Dermatology and Allergy Biederstein, Faculty of Medicine, Technical University of Munich, Munich, Germany
| | - S Mathes
- Department of Dermatology and Allergy Biederstein, Faculty of Medicine, Technical University of Munich, Munich, Germany
| | - U Darsow
- Department of Dermatology and Allergy Biederstein, Faculty of Medicine, Technical University of Munich, Munich, Germany
| | - T Biedermann
- Department of Dermatology and Allergy Biederstein, Faculty of Medicine, Technical University of Munich, Munich, Germany
| | - K Brockow
- Department of Dermatology and Allergy Biederstein, Faculty of Medicine, Technical University of Munich, Munich, Germany
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11
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Nanni M, Rütsche D, Bächler C, Pontiggia L, Klar AS, Moehrlen U, Biedermann T. CD146 expression profile in human skin and pre-vascularized dermo-epidermal skin substitutes in vivo. J Biol Eng 2023; 17:9. [PMID: 36721239 PMCID: PMC9890844 DOI: 10.1186/s13036-023-00327-x] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 01/20/2023] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND CD146 is a cell adhesion molecule whose expression profile in human skin has not yet been elucidated. Here, we characterize CD146 expression pattern in human skin, in particular in blood endothelial cells (BECs) and lymphatic endothelial cells (LECs), which constitute human dermal microvascular endothelial cells (HDMECs), as well as in perivascular cells. RESULTS We demonstrated that CD146 is a specific marker of BECs, but not of LECs. Moreover, we found CD146 expression also in human pericytes surrounding blood capillaries in human skin. In addition, we demonstrated that CD146 expression is up-regulated by the TNFα-IL-1β/NF-kB axis in both BECs and pericytes. Finally, we engineered 3D collagen hydrogels composed of HDMECs, CD146+ pericytes, and fibroblasts which developed, in vitro and in vivo, a complete microvasculature network composed of blood and lymphatic capillaries with pericytes investing blood capillaries. CONCLUSIONS Overall, our results proved that CD146 is a specific marker of BECs and pericytes, but not LECs in human skin. Further, the combination of CD146+ pericytes with HDMECs in skin substitutes allowed to bioengineer a comprehensive 3D in vitro and in vivo model of the human dermal microvasculature.
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Affiliation(s)
- Monica Nanni
- grid.412341.10000 0001 0726 4330Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital Zurich, Wagistrasse 12, 8952 Zurich, Switzerland ,grid.412341.10000 0001 0726 4330Children’s Research Center, University Children’s Hospital Zurich, Zurich, Switzerland ,grid.5801.c0000 0001 2156 2780Department of Mechanical and Process Engineering, Institute for Mechanical Systems, ETH Zurich, Leonhardstrasse 21, 8092 Zurich, Switzerland
| | - Dominic Rütsche
- grid.412341.10000 0001 0726 4330Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital Zurich, Wagistrasse 12, 8952 Zurich, Switzerland ,grid.412341.10000 0001 0726 4330Children’s Research Center, University Children’s Hospital Zurich, Zurich, Switzerland ,grid.5801.c0000 0001 2156 2780Department of Mechanical and Process Engineering, Institute for Mechanical Systems, ETH Zurich, Leonhardstrasse 21, 8092 Zurich, Switzerland
| | - Curdin Bächler
- grid.412341.10000 0001 0726 4330Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital Zurich, Wagistrasse 12, 8952 Zurich, Switzerland ,grid.412341.10000 0001 0726 4330Children’s Research Center, University Children’s Hospital Zurich, Zurich, Switzerland
| | - Luca Pontiggia
- grid.412341.10000 0001 0726 4330Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital Zurich, Wagistrasse 12, 8952 Zurich, Switzerland ,grid.412341.10000 0001 0726 4330Children’s Research Center, University Children’s Hospital Zurich, Zurich, Switzerland
| | - Agnes S. Klar
- grid.412341.10000 0001 0726 4330Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital Zurich, Wagistrasse 12, 8952 Zurich, Switzerland ,grid.412341.10000 0001 0726 4330Children’s Research Center, University Children’s Hospital Zurich, Zurich, Switzerland
| | - Ueli Moehrlen
- grid.412341.10000 0001 0726 4330Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital Zurich, Wagistrasse 12, 8952 Zurich, Switzerland ,grid.412341.10000 0001 0726 4330Children’s Research Center, University Children’s Hospital Zurich, Zurich, Switzerland ,grid.412341.10000 0001 0726 4330Department of Surgery, University Children’s Hospital Zurich, Zurich, Switzerland ,grid.7400.30000 0004 1937 0650University of Zurich, Zurich, Switzerland
| | - Thomas Biedermann
- grid.412341.10000 0001 0726 4330Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital Zurich, Wagistrasse 12, 8952 Zurich, Switzerland ,grid.412341.10000 0001 0726 4330Children’s Research Center, University Children’s Hospital Zurich, Zurich, Switzerland ,grid.7400.30000 0004 1937 0650University of Zurich, Zurich, Switzerland
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12
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Schäbitz A, Hillig C, Mubarak M, Jargosch M, Farnoud A, Scala E, Kurzen N, Pilz AC, Bhalla N, Thomas J, Stahle M, Biedermann T, Schmidt-Weber CB, Theis F, Garzorz-Stark N, Eyerich K, Menden MP, Eyerich S. Spatial transcriptomics landscape of lesions from non-communicable inflammatory skin diseases. Nat Commun 2022; 13:7729. [PMID: 36513651 PMCID: PMC9747967 DOI: 10.1038/s41467-022-35319-w] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 11/28/2022] [Indexed: 12/15/2022] Open
Abstract
Abundant heterogeneous immune cells infiltrate lesions in chronic inflammatory diseases and characterization of these cells is needed to distinguish disease-promoting from bystander immune cells. Here, we investigate the landscape of non-communicable inflammatory skin diseases (ncISD) by spatial transcriptomics resulting in a large repository of 62,000 spatially defined human cutaneous transcriptomes from 31 patients. Despite the expected immune cell infiltration, we observe rather low numbers of pathogenic disease promoting cytokine transcripts (IFNG, IL13 and IL17A), i.e. >125 times less compared to the mean expression of all other genes over lesional skin sections. Nevertheless, cytokine expression is limited to lesional skin and presented in a disease-specific pattern. Leveraging a density-based spatial clustering method, we identify specific responder gene signatures in direct proximity of cytokines, and confirm that detected cytokine transcripts initiate amplification cascades of up to thousands of specific responder transcripts forming localized epidermal clusters. Thus, within the abundant and heterogeneous infiltrates of ncISD, only a low number of cytokine transcripts and their translated proteins promote disease by initiating an inflammatory amplification cascade in their local microenvironment.
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Affiliation(s)
- A. Schäbitz
- grid.4714.60000 0004 1937 0626Division of Dermatology and Venereology, Department of Medicine Solna, and Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - C. Hillig
- grid.4567.00000 0004 0483 2525Institute of Computational Biology, Helmholtz Zentrum München—German Research Centre for Environmental Health, Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany
| | - M. Mubarak
- grid.6936.a0000000123222966Center for Allergy and Environment (ZAUM), Technical University and Helmholtz Center Munich, Biedersteinerstrasse 29, 80802 Munich, Germany
| | - M. Jargosch
- grid.6936.a0000000123222966Center for Allergy and Environment (ZAUM), Technical University and Helmholtz Center Munich, Biedersteinerstrasse 29, 80802 Munich, Germany ,grid.6936.a0000000123222966Department of Dermatology and Allergy, Technical University of Munich, Biedersteinerstrasse 29, 80802 Munich, Germany
| | - A. Farnoud
- grid.4567.00000 0004 0483 2525Institute of Computational Biology, Helmholtz Zentrum München—German Research Centre for Environmental Health, Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany
| | - E. Scala
- grid.4714.60000 0004 1937 0626Division of Dermatology and Venereology, Department of Medicine Solna, and Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden ,grid.5963.9Department of Dermatology and Venerology, Medical Center—University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - N. Kurzen
- grid.6936.a0000000123222966Center for Allergy and Environment (ZAUM), Technical University and Helmholtz Center Munich, Biedersteinerstrasse 29, 80802 Munich, Germany
| | - A. C. Pilz
- grid.6936.a0000000123222966Department of Dermatology and Allergy, Technical University of Munich, Biedersteinerstrasse 29, 80802 Munich, Germany ,grid.5963.9Department of Dermatology and Venerology, Medical Center—University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - N. Bhalla
- grid.5037.10000000121581746Department of Gene Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm, Sweden
| | - J. Thomas
- grid.6936.a0000000123222966Center for Allergy and Environment (ZAUM), Technical University and Helmholtz Center Munich, Biedersteinerstrasse 29, 80802 Munich, Germany
| | - M. Stahle
- grid.4714.60000 0004 1937 0626Division of Dermatology and Venereology, Department of Medicine Solna, and Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - T. Biedermann
- grid.6936.a0000000123222966Department of Dermatology and Allergy, Technical University of Munich, Biedersteinerstrasse 29, 80802 Munich, Germany
| | - C. B. Schmidt-Weber
- grid.6936.a0000000123222966Center for Allergy and Environment (ZAUM), Technical University and Helmholtz Center Munich, Biedersteinerstrasse 29, 80802 Munich, Germany
| | - F. Theis
- grid.4567.00000 0004 0483 2525Institute of Computational Biology, Helmholtz Zentrum München—German Research Centre for Environmental Health, Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany
| | - N. Garzorz-Stark
- grid.4714.60000 0004 1937 0626Division of Dermatology and Venereology, Department of Medicine Solna, and Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden ,grid.6936.a0000000123222966Department of Dermatology and Allergy, Technical University of Munich, Biedersteinerstrasse 29, 80802 Munich, Germany
| | - K. Eyerich
- grid.4714.60000 0004 1937 0626Division of Dermatology and Venereology, Department of Medicine Solna, and Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden ,grid.5963.9Department of Dermatology and Venerology, Medical Center—University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany ,grid.24381.3c0000 0000 9241 5705Department of Dermatology and Venereology, Unit of Dermatology, Karolinska University Hospital, Stockholm, Sweden
| | - M. P. Menden
- grid.4567.00000 0004 0483 2525Institute of Computational Biology, Helmholtz Zentrum München—German Research Centre for Environmental Health, Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany ,grid.5252.00000 0004 1936 973XDepartment of Biology, Ludwig-Maximilians University, Goßhadernerstrasse 2, Martinsried, 82152 Germany ,grid.452622.5German Center for Diabetes Research (DZD e.V.), Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany
| | - S. Eyerich
- grid.6936.a0000000123222966Center for Allergy and Environment (ZAUM), Technical University and Helmholtz Center Munich, Biedersteinerstrasse 29, 80802 Munich, Germany
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13
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Rauca V, Iuliano C, Mayer K, Kaesler S, Biedermann T. 487 Mast cells alter the invasive properties of melanoma cells in vitro. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.501] [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: 11/19/2022]
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14
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Hölge I, Kaesler S, Hils M, Amar Y, Biedermann T. 371 Dissecting key features of early-stage atopic dermatitis in pre-clinical models. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.384] [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: 11/19/2022]
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15
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Seiringer P, Hillig C, Schäbitz A, Eyerich S, Fazekas F, Zouboulis C, Biedermann T, Eyerich K, Töröcsik D. 032 Sebaceous glands are actively and differentially involved in the pathogenesis of atopic dermatitis and psoriasis as revealed by spatial transcriptomics. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.041] [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: 11/19/2022]
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16
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Kurgyis Z, Vornholz L, Kemény L, Kranen K, Mellett M, French L, Biedermann T, Ruland J. 333 Keratinocyte-intrinsic BCL10/MALT1 activity initiates and amplifies psoriasiform skin inflammation. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.346] [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: 11/19/2022]
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17
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Iuliano C, Kaesler S, Biedermann T. 429 Targeting mast-cell plasticity re-shapes the tumor microenvironment of melanoma. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.443] [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: 11/19/2022]
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18
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Michalak-Micka K, Rütsche D, Mazzone L, Büchler VL, Moehrlen U, Klar AS, Biedermann T. Human fetal skin derived merkel cells display distinctive characteristics in vitro and in bio-engineered skin substitutes in vivo. Front Bioeng Biotechnol 2022; 10:983870. [PMID: 36185452 PMCID: PMC9520781 DOI: 10.3389/fbioe.2022.983870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 08/30/2022] [Indexed: 11/16/2022] Open
Abstract
Human skin contains specialized neuroendocrine Merkel cells responsible for fine touch sensation. In the present study, we performed in-depth analysis of Merkel cells in human fetal back skin. We revealed that these Merkel cells expressed cytokeratin 20 (CK20), were positive for the neuroendocrine markers synaptophysin and chromogranin A, and the mechanosensitive ion channel Piezo2. Further, we demonstrated that Merkel cells were present in freshly isolated human fetal epidermal cells in vitro, and in tissue-engineered human dermo-epidermal skin substitutes 4 weeks after transplantation on immune-compromised rats. Merkel cells retained the expression of CK20, synaptophysin, chromogranin A, and Piezo2 after isolation and in culture, and in the skin substitutes after transplantation. Interestingly, we observed that in fetal skin and in skin substitutes, only Merkel cells were positive for CK8, while in culture, also non-Merkel cells showed positivity for CK8. In summary, human fetal Merkel cells showed phenotypical features confirming their cell identity. This findings are of pivotal importance for the future application of fetal tissue-engineered skin in clinics.
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Affiliation(s)
- Katarzyna Michalak-Micka
- Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital Zurich, Zurich, Switzerland
- Children’s Research Center (CRC), University Children’s Hospital Zurich, Zurich, Switzerland
| | - Dominic Rütsche
- Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital Zurich, Zurich, Switzerland
- Children’s Research Center (CRC), University Children’s Hospital Zurich, Zurich, Switzerland
| | - Luca Mazzone
- Children’s Research Center (CRC), University Children’s Hospital Zurich, Zurich, Switzerland
- Spina Bifida Center, University Children’s Hospital Zurich, Zurich, Switzerland
- The Zurich Center for Fetal Diagnosis and Therapy, University of Zurich, Zurich, Switzerland
| | - Vanessa L. Büchler
- Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital Zurich, Zurich, Switzerland
- Children’s Research Center (CRC), University Children’s Hospital Zurich, Zurich, Switzerland
| | - Ueli Moehrlen
- Children’s Research Center (CRC), University Children’s Hospital Zurich, Zurich, Switzerland
- Spina Bifida Center, University Children’s Hospital Zurich, Zurich, Switzerland
- The Zurich Center for Fetal Diagnosis and Therapy, University of Zurich, Zurich, Switzerland
- Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Agnes S. Klar
- Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital Zurich, Zurich, Switzerland
- Children’s Research Center (CRC), University Children’s Hospital Zurich, Zurich, Switzerland
| | - Thomas Biedermann
- Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital Zurich, Zurich, Switzerland
- Children’s Research Center (CRC), University Children’s Hospital Zurich, Zurich, Switzerland
- Faculty of Medicine, University of Zurich, Zurich, Switzerland
- *Correspondence: Thomas Biedermann,
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19
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Claussen CS, Mathes S, Li L, Evers B, Keshmiri M, Biedermann T, Posch C, Eberlein B. Phototesting in a case of encorafenib-related photosensitivity. J Eur Acad Dermatol Venereol 2022; 36:e934-e935. [PMID: 35771082 DOI: 10.1111/jdv.18383] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- C S Claussen
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Germany
| | - S Mathes
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Germany
| | | | - B Evers
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Germany
| | - M Keshmiri
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Germany
| | - T Biedermann
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Germany
| | - C Posch
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Germany.,Vienna Health Association Hietzing Clinic, Department of Dermatology, Venereology and Allergology, Vienna, Austria.,Sigmund Freud Private University Vienna, Faculty of Medicine, Vienna, Austria
| | - B Eberlein
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Germany
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20
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Ahuja AK, Pontiggia L, Moehrlen U, Biedermann T. The Dynamic Nature of Human Dermal Fibroblasts Is Defined by Marked Variation in the Gene Expression of Specific Cytoskeletal Markers. Life (Basel) 2022; 12:life12070935. [PMID: 35888024 PMCID: PMC9319478 DOI: 10.3390/life12070935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 06/13/2022] [Indexed: 11/16/2022]
Abstract
The evidence for fibroblast heterogeneity is continuously increasing, and recent work has shed some light on the existence of different sub-populations of fibroblasts in the human skin. Although we now have a more precise understanding of their distribution in the human body, we do not know whether their properties are predictive of where these cells derive from or whether these sub-types have functional consequences. In this study, we employed single-cell transcriptomics (10X Genomics) to study gene expression and segregate fibroblast sub-populations based on their genetic signature. We report the differential expression of a defined set of genes in fibroblasts from human skin, which may contribute to their dynamicity in vivo and in vitro. We show that the sub-population of fibroblasts expressing cytoskeletal markers, such as ANXA2, VIM, ACTB, are enriched in an adult skin sample. Interestingly, this sub-population of fibroblasts is not enriched in a neonatal skin sample but becomes predominant when neonatal fibroblasts are cultivated. On the other hand, the fibroblast sub-populations expressing COL1A1 and ELN are enriched in neonatal skin but are reduced in the adult skin and in fibroblasts from neonatal skin that are cultured in vitro. Our results indicate that fibroblasts are a dynamic cell type, and while their genetic make-up changes markedly, only a handful of genes belonging to the same functional pathway govern this alteration. The gene expression pattern of cytoskeletal markers may help in identifying whether the fibroblasts were isolated from an adult or an infant or whether they were cultivated, and this information could be useful for quality control in clinics and in cell banking. Furthermore, this study opens additional avenues to investigate the role of these markers in defining the complexity of human dermal fibroblasts.
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Affiliation(s)
- Akshay Kumar Ahuja
- Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital, University of Zurich, 8057 Zurich, Switzerland; (L.P.); (U.M.)
- Children’s Research Center, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- Correspondence: (A.K.A.); (T.B.)
| | - Luca Pontiggia
- Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital, University of Zurich, 8057 Zurich, Switzerland; (L.P.); (U.M.)
- Children’s Research Center, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- Faculty of Medicine, University of Zurich, 8057 Zurich, Switzerland
| | - Ueli Moehrlen
- Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital, University of Zurich, 8057 Zurich, Switzerland; (L.P.); (U.M.)
- Children’s Research Center, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- Faculty of Medicine, University of Zurich, 8057 Zurich, Switzerland
| | - Thomas Biedermann
- Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital, University of Zurich, 8057 Zurich, Switzerland; (L.P.); (U.M.)
- Children’s Research Center, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- Faculty of Medicine, University of Zurich, 8057 Zurich, Switzerland
- Correspondence: (A.K.A.); (T.B.)
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21
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Faihs V, Bent R, Darsow U, Biedermann T, Brockow K. Tolerance to SARS-CoV-2 mRNA vaccination in a patient with challenge-confirmed PEG 2000 allergy. J Investig Allergol Clin Immunol 2022; 33:149-150. [PMID: 35638391 DOI: 10.18176/jiaci.0829] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- V Faihs
- Department of Dermatology and Allergy Biederstein, School of Medicine, Technical University of Munich, Munich, Germany
| | - R Bent
- Department of Dermatology and Allergy Biederstein, School of Medicine, Technical University of Munich, Munich, Germany
| | - U Darsow
- Department of Dermatology and Allergy Biederstein, School of Medicine, Technical University of Munich, Munich, Germany
| | - T Biedermann
- Department of Dermatology and Allergy Biederstein, School of Medicine, Technical University of Munich, Munich, Germany
| | - K Brockow
- Department of Dermatology and Allergy Biederstein, School of Medicine, Technical University of Munich, Munich, Germany
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22
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Brockow K, K R, C K, Biedermann T. Wheat-dependent exercise-induced anaphylaxis caused by percutaneous sensitisation to hydrolysed wheat protein in cosmetics. Contact Dermatitis 2022; 87:296-297. [PMID: 35524944 DOI: 10.1111/cod.14144] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 04/30/2022] [Indexed: 11/30/2022]
Affiliation(s)
- K Brockow
- Department of Dermatology and Allergy Biederstein, School of Medicine, Technical University of Munich, Germany
| | - Reidenbach K
- Department of Dermatology and Allergy Biederstein, School of Medicine, Technical University of Munich, Germany
| | - Kugler C
- Department of Dermatology and Allergy Biederstein, School of Medicine, Technical University of Munich, Germany
| | - T Biedermann
- Department of Dermatology and Allergy Biederstein, School of Medicine, Technical University of Munich, Germany
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23
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Mayer KE, Biedermann T, Posch C. European scabies challenge: What about permethrin-resistant mites? J Eur Acad Dermatol Venereol 2022; 36:e712-e713. [PMID: 35470925 DOI: 10.1111/jdv.18181] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 04/20/2022] [Indexed: 11/28/2022]
Affiliation(s)
- K E Mayer
- Klinik und Poliklinik für Dermatologie und Allergologie, Klinikum rechts der Isar, Technical University Munich, Biedersteiner Str. 29, 80802 München, GER
| | - T Biedermann
- Klinik und Poliklinik für Dermatologie und Allergologie, Klinikum rechts der Isar, Technical University Munich, Biedersteiner Str. 29, 80802 München, GER
| | - C Posch
- Klinik und Poliklinik für Dermatologie und Allergologie, Klinikum rechts der Isar, Technical University Munich, Biedersteiner Str. 29, 80802 München, GER.,Faculty of Medicine, Sigmund Freud University Vienna, Freudplatz 3, 1020, Vienna, AUT
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24
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Pontiggia L, Van Hengel IAJ, Klar A, Rütsche D, Nanni M, Scheidegger A, Figi S, Reichmann E, Moehrlen U, Biedermann T. Bioprinting and plastic compression of large pigmented and vascularized human dermo-epidermal skin substitutes by means of a new robotic platform. J Tissue Eng 2022; 13:20417314221088513. [PMID: 35495096 PMCID: PMC9044789 DOI: 10.1177/20417314221088513] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Indexed: 12/19/2022] Open
Abstract
Extensive availability of engineered autologous dermo-epidermal skin substitutes (DESS) with functional and structural properties of normal human skin represents a goal for the treatment of large skin defects such as severe burns. Recently, a clinical phase I trial with this type of DESS was successfully completed, which included patients own keratinocytes and fibroblasts. Yet, two important features of natural skin were missing: pigmentation and vascularization. The first has important physiological and psychological implications for the patient, the second impacts survival and quality of the graft. Additionally, accurate reproduction of large amounts of patient’s skin in an automated way is essential for upscaling DESS production. Therefore, in the present study, we implemented a new robotic unit (called SkinFactory) for 3D bioprinting of pigmented and pre-vascularized DESS using normal human skin derived fibroblasts, blood- and lymphatic endothelial cells, keratinocytes, and melanocytes. We show the feasibility of our approach by demonstrating the viability of all the cells after printing in vitro, the integrity of the reconstituted capillary network in vivo after transplantation to immunodeficient rats and the anastomosis to the vascular plexus of the host. Our work has to be considered as a proof of concept in view of the implementation of an extended platform, which fully automatize the process of skin substitution: this would be a considerable improvement of the treatment of burn victims and patients with severe skin lesions based on patients own skin derived cells.
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Affiliation(s)
- Luca Pontiggia
- Tissue Biology Research Unit, Department of Pediatric Surgery, University Children’s Hospital Zurich, University of Zurich, Zurich, Switzerland
- Children’s Research Center, University Children’s Hospital Zurich, Zurich, Switzerland
| | - Ingmar AJ Van Hengel
- Tissue Biology Research Unit, Department of Pediatric Surgery, University Children’s Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Agnes Klar
- Tissue Biology Research Unit, Department of Pediatric Surgery, University Children’s Hospital Zurich, University of Zurich, Zurich, Switzerland
- Children’s Research Center, University Children’s Hospital Zurich, Zurich, Switzerland
| | - Dominic Rütsche
- Tissue Biology Research Unit, Department of Pediatric Surgery, University Children’s Hospital Zurich, University of Zurich, Zurich, Switzerland
- Children’s Research Center, University Children’s Hospital Zurich, Zurich, Switzerland
| | - Monica Nanni
- Tissue Biology Research Unit, Department of Pediatric Surgery, University Children’s Hospital Zurich, University of Zurich, Zurich, Switzerland
- Children’s Research Center, University Children’s Hospital Zurich, Zurich, Switzerland
- Institute for Mechanical Systems, Department of Mechanical and Process Engineering, ETH Zurich, Zurich, Switzerland
| | | | | | - Ernst Reichmann
- Tissue Biology Research Unit, Department of Pediatric Surgery, University Children’s Hospital Zurich, University of Zurich, Zurich, Switzerland
- Children’s Research Center, University Children’s Hospital Zurich, Zurich, Switzerland
| | - Ueli Moehrlen
- Tissue Biology Research Unit, Department of Pediatric Surgery, University Children’s Hospital Zurich, University of Zurich, Zurich, Switzerland
- Department of Pediatric Surgery, University Children’s Hospital Zurich, University of Zurich, Zurich, Switzerland
- Zurich Center for Fetal Diagnosis and Treatment, Zurich, Switzerland
- Children’s Research Center, University Children’s Hospital Zurich, Zurich, Switzerland
- University of Zurich, Zurich, Switzerland
| | - Thomas Biedermann
- Tissue Biology Research Unit, Department of Pediatric Surgery, University Children’s Hospital Zurich, University of Zurich, Zurich, Switzerland
- Children’s Research Center, University Children’s Hospital Zurich, Zurich, Switzerland
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25
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Rütsche D, Michalak-Micka K, Zielinska D, Moll H, Moehrlen U, Biedermann T, Klar AS. The Role of CD200-CD200 Receptor in Human Blood and Lymphatic Endothelial Cells in the Regulation of Skin Tissue Inflammation. Cells 2022; 11:cells11061055. [PMID: 35326506 PMCID: PMC8947338 DOI: 10.3390/cells11061055] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Revised: 03/15/2022] [Accepted: 03/16/2022] [Indexed: 12/10/2022] Open
Abstract
CD200 is a cell membrane glycoprotein that interacts with its structurally related receptor (CD200R) expressed on immune cells. We characterized CD200–CD200R interactions in human adult/juvenile (j/a) and fetal (f) skin and in in vivo prevascularized skin substitutes (vascDESS) prepared by co-culturing human dermal microvascular endothelial cells (HDMEC), containing both blood (BEC) and lymphatic (LEC) EC. We detected the highest expression of CD200 on lymphatic capillaries in j/a and f skin as well as in vascDESS in vivo, whereas it was only weakly expressed on blood capillaries. Notably, the highest CD200 levels were detected on LEC with enhanced Podoplanin expression, while reduced expression was observed on Podoplanin-low LEC. Further, qRT-PCR analysis revealed upregulated expression of some chemokines, including CC-chemokine ligand 21 (CCL21) in j/aCD200+ LEC, as compared to j/aCD200− LEC. The expression of CD200R was mainly detected on myeloid cells such as granulocytes, monocytes/macrophages, T cells in human peripheral blood, and human and rat skin. Functional immunoassays demonstrated specific binding of skin-derived CD200+ HDMEC to myeloid CD200R+ cells in vitro. Importantly, we confirmed enhanced CD200–CD200R interaction in vascDESS in vivo. We concluded that the CD200–CD200R axis plays a crucial role in regulating tissue inflammation during skin wound healing.
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Affiliation(s)
- Dominic Rütsche
- Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital Zurich, 8032 Zurich, Switzerland; (D.R.); (K.M.-M.); (D.Z.); (H.M.); (U.M.); (T.B.)
- Children’s Research Center, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- Faculty of Medicine, University of Zurich, 8032 Zurich, Switzerland
| | - Katarzyna Michalak-Micka
- Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital Zurich, 8032 Zurich, Switzerland; (D.R.); (K.M.-M.); (D.Z.); (H.M.); (U.M.); (T.B.)
- Children’s Research Center, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- Faculty of Medicine, University of Zurich, 8032 Zurich, Switzerland
| | - Dominika Zielinska
- Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital Zurich, 8032 Zurich, Switzerland; (D.R.); (K.M.-M.); (D.Z.); (H.M.); (U.M.); (T.B.)
- Children’s Research Center, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- Faculty of Medicine, University of Zurich, 8032 Zurich, Switzerland
| | - Hannah Moll
- Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital Zurich, 8032 Zurich, Switzerland; (D.R.); (K.M.-M.); (D.Z.); (H.M.); (U.M.); (T.B.)
- Children’s Research Center, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- Faculty of Medicine, University of Zurich, 8032 Zurich, Switzerland
| | - Ueli Moehrlen
- Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital Zurich, 8032 Zurich, Switzerland; (D.R.); (K.M.-M.); (D.Z.); (H.M.); (U.M.); (T.B.)
- Children’s Research Center, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- Faculty of Medicine, University of Zurich, 8032 Zurich, Switzerland
- Department of Pediatric Surgery, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
| | - Thomas Biedermann
- Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital Zurich, 8032 Zurich, Switzerland; (D.R.); (K.M.-M.); (D.Z.); (H.M.); (U.M.); (T.B.)
- Children’s Research Center, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- Faculty of Medicine, University of Zurich, 8032 Zurich, Switzerland
| | - Agnes S. Klar
- Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital Zurich, 8032 Zurich, Switzerland; (D.R.); (K.M.-M.); (D.Z.); (H.M.); (U.M.); (T.B.)
- Children’s Research Center, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- Faculty of Medicine, University of Zurich, 8032 Zurich, Switzerland
- Correspondence: ; Tel.: +41-446348819
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26
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Michalak-Micka K, Rütsche D, Johner L, Moehrlen U, Biedermann T, Klar AS. Expression Profile of CD157 Reveals Functional Heterogeneity of Capillaries in Human Dermal Skin. Biomedicines 2022; 10:biomedicines10030676. [PMID: 35327478 PMCID: PMC8945771 DOI: 10.3390/biomedicines10030676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 03/08/2022] [Accepted: 03/11/2022] [Indexed: 11/16/2022] Open
Abstract
CD157 acts as a receptor, regulating leukocyte trafficking and the binding of extracellular matrix components. However, the expression pattern and the role of CD157 in human blood (BEC) and the lymphatic endothelial cells (LEC) of human dermal microvascular cells (HDMEC), remain elusive. We demonstrated constitutive expression of CD157 on BEC and LEC, in fetal and juvenile/adult skin, in situ, as well as in isolated HDMEC. Interestingly, CD157 epitopes were mostly localized on BEC, co-expressing high levels of CD31 (CD31High), as compared to CD31Low BEC, whereas the podoplanin expression level on LEC did not affect CD157. Cultured HDMEC exhibited significantly higher numbers of CD157-positive LEC, as compared to BEC. Interestingly, separated CD157− and CD157+ HDMEC demonstrated no significant differences in clonal expansion in vitro, but they showed distinct expression levels of cell adhesion molecules, before and after cytokine stimulation in vitro. In particular, we proved the enhanced and specific adherence of CD11b-expressing human blood myeloid cells to CD157+ HDMEC fraction, using an in vitro immune-binding assay. Indeed, CD157 was also involved in chemotaxis and adhesion of CD11b/c monocytes/neutrophils in prevascularized dermo–epidermal skin substitutes (vascDESS) in vivo. Thus, our data attribute specific roles to endothelial CD157, in the regulation of innate immunity during inflammation.
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Affiliation(s)
- Katarzyna Michalak-Micka
- Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital Zurich, 8032 Zurich, Switzerland; (K.M.-M.); (D.R.); (L.J.); (U.M.); (T.B.)
- Children’s Research Center, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- University of Zurich, 8006 Zurich, Switzerland
| | - Dominic Rütsche
- Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital Zurich, 8032 Zurich, Switzerland; (K.M.-M.); (D.R.); (L.J.); (U.M.); (T.B.)
- Children’s Research Center, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- University of Zurich, 8006 Zurich, Switzerland
| | - Lukas Johner
- Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital Zurich, 8032 Zurich, Switzerland; (K.M.-M.); (D.R.); (L.J.); (U.M.); (T.B.)
- Children’s Research Center, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- University of Zurich, 8006 Zurich, Switzerland
| | - Ueli Moehrlen
- Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital Zurich, 8032 Zurich, Switzerland; (K.M.-M.); (D.R.); (L.J.); (U.M.); (T.B.)
- Children’s Research Center, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- University of Zurich, 8006 Zurich, Switzerland
- Department of Surgery, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
| | - Thomas Biedermann
- Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital Zurich, 8032 Zurich, Switzerland; (K.M.-M.); (D.R.); (L.J.); (U.M.); (T.B.)
- Children’s Research Center, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- University of Zurich, 8006 Zurich, Switzerland
| | - Agnes S. Klar
- Tissue Biology Research Unit, Department of Surgery, University Children’s Hospital Zurich, 8032 Zurich, Switzerland; (K.M.-M.); (D.R.); (L.J.); (U.M.); (T.B.)
- Children’s Research Center, University Children’s Hospital Zurich, 8032 Zurich, Switzerland
- University of Zurich, 8006 Zurich, Switzerland
- Correspondence:
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27
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Michalak-Micka K, Klar AS, Dasargyri A, Biedermann T, Reichmann E, Moehrlen U. The influence of CD26 + and CD26 - fibroblasts on the regeneration of human dermo-epidermal skin substitutes. Sci Rep 2022; 12:1944. [PMID: 35121765 PMCID: PMC8816920 DOI: 10.1038/s41598-022-05309-5] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 01/04/2022] [Indexed: 11/15/2022] Open
Abstract
CD26, also known as dipeptidyl peptidase IV (DPPIV), is a multifunctional transmembrane protein playing a significant role in the cutaneous wound healing processes in the mouse skin. However, only scarce data are available regarding the distribution and function of this protein in the human skin. Therefore, the aim of this study was to investigate the impact of CD26 deficiency in human primary fibroblasts on the regeneration of human tissue-engineered skin substitutes in vivo. Dermo-epidermal skin analogs, based on collagen type I hydrogels, were populated either with human CD26+ or CD26knockout fibroblasts and seeded with human epidermal keratinocytes. These skin substitutes were transplanted onto the back of immune-incompetent rodents. Three weeks post-transplantation, the grafts were excised and analyzed with respect to specific epidermal and dermal maturation markers. For the first time, we show here that the expression of CD26 protein in human dermis is age-dependent. Furthermore, we prove that CD26+ fibroblasts are more active in the production of extracellular matrix (ECM) both in vitro and in vivo and are necessary to achieve rapid epidermal and dermal homeostasis after transplantation.
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Affiliation(s)
- Katarzyna Michalak-Micka
- Tissue Biology Research Unit, Department of Surgery, University Children's Hospital Zurich, University of Zurich, Steinwiesstrasse 75, 8032, Zurich, Switzerland
- Children's Research Center, University Children's Hospital Zurich, Zurich, Switzerland
| | - Agnes S Klar
- Tissue Biology Research Unit, Department of Surgery, University Children's Hospital Zurich, University of Zurich, Steinwiesstrasse 75, 8032, Zurich, Switzerland
- Children's Research Center, University Children's Hospital Zurich, Zurich, Switzerland
| | - Athanasia Dasargyri
- Tissue Biology Research Unit, Department of Surgery, University Children's Hospital Zurich, University of Zurich, Steinwiesstrasse 75, 8032, Zurich, Switzerland
- Children's Research Center, University Children's Hospital Zurich, Zurich, Switzerland
| | - Thomas Biedermann
- Tissue Biology Research Unit, Department of Surgery, University Children's Hospital Zurich, University of Zurich, Steinwiesstrasse 75, 8032, Zurich, Switzerland
- Children's Research Center, University Children's Hospital Zurich, Zurich, Switzerland
| | - Ernst Reichmann
- Tissue Biology Research Unit, Department of Surgery, University Children's Hospital Zurich, University of Zurich, Steinwiesstrasse 75, 8032, Zurich, Switzerland
- Children's Research Center, University Children's Hospital Zurich, Zurich, Switzerland
| | - Ueli Moehrlen
- Tissue Biology Research Unit, Department of Surgery, University Children's Hospital Zurich, University of Zurich, Steinwiesstrasse 75, 8032, Zurich, Switzerland.
- Children's Research Center, University Children's Hospital Zurich, Zurich, Switzerland.
- Department of Surgery, University Children's Hospital Zurich, University of Zurich, Zurich, Switzerland.
- University of Zurich, Zurich, Switzerland.
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28
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Amar Y, Schneider E, Köberle M, Seeholzer T, Musiol S, Hölge IM, Gschwendtner S, Krappmann D, Steiger K, Biedermann T, Schmidt-Weber CB, Alessandrini F. Microbial dysbiosis in a mouse model of atopic dermatitis mimics shifts in human microbiome and correlates with the key pro-inflammatory cytokines IL-4, IL-33 and TSLP. J Eur Acad Dermatol Venereol 2022; 36:705-716. [PMID: 35015907 DOI: 10.1111/jdv.17911] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [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: 08/17/2021] [Accepted: 12/03/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Cutaneous bacterial dysbiosis is a characteristic hallmark of atopic dermatitis (AD) and it decisively influences the severity of the disease. Despite this, frequently used murine models of AD have not been characterized regarding the changes in skin microbiome communities. OBJECTIVE To analyze the skin microbiome of two frequently used murine models for AD for assessing their applicability in translational research. METHODS AD was induced in mice by topical application of calcipotriol, or oxazolone. Following comparable elicitation of AD-like dermatitis, including IgE induction, the skin microbial communities were analyzed and compared with human AD. RESULTS We detected critical differences in the microbiota composition of diseased skin. In contrast to calcipotriol treatment, application of oxazolone induced significant changes of the cutaneous microbiota and a drastic drop of bacterial richness. Furthermore, an expansion of Staphylococci, particularly S. xylosus was observed in the oxazolone group, also displaying positive correlations with AD key markers including pH, TEWL, IL-4, TSLP and IL-33. CONCLUSIONS In this article we show that i) the model of choice to investigate AD needs to be characterized for the cutaneous microbiota if applicable and ii) the oxazolone-mediated mixed Th1-Th2 immune response triggers microbiota-induced alterations which share similarities to dysbiosis in human AD and represents therefore a suitable model for translational research on AD if alterations of the microbiome are in the focus of the investigation.
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Affiliation(s)
- Y Amar
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany
| | - E Schneider
- Center of Allergy & Environment (ZAUM), Technical University of Munich (TUM) and Helmholtz Zentrum München, German Research Center for Environmental Health, Member of the German Center of Lung Research (DZL), Munich, Germany
| | - M Köberle
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany
| | - T Seeholzer
- Research Unit Cellular Signal Integration, Institute of Molecular Toxicology and Pharmacology, Helmholtz Center München, German Research Center for Environmental Health, Neuherberg, Germany
| | - S Musiol
- Center of Allergy & Environment (ZAUM), Technical University of Munich (TUM) and Helmholtz Zentrum München, German Research Center for Environmental Health, Member of the German Center of Lung Research (DZL), Munich, Germany.,Eurofins BioPharma Product Testing Munich GmbH, Planegg, Germany
| | - I M Hölge
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany
| | - S Gschwendtner
- Research Unit for Comparative Microbiome Analysis, Helmholtz Center München, German Research Center for Environmental Health, Neuherberg, Germany
| | - D Krappmann
- Research Unit Cellular Signal Integration, Institute of Molecular Toxicology and Pharmacology, Helmholtz Center München, German Research Center for Environmental Health, Neuherberg, Germany
| | - K Steiger
- Institute of Pathology, School of Medicine, Technical University of Munich, Munich, Germany
| | - T Biedermann
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany
| | - C B Schmidt-Weber
- Center of Allergy & Environment (ZAUM), Technical University of Munich (TUM) and Helmholtz Zentrum München, German Research Center for Environmental Health, Member of the German Center of Lung Research (DZL), Munich, Germany
| | - F Alessandrini
- Center of Allergy & Environment (ZAUM), Technical University of Munich (TUM) and Helmholtz Zentrum München, German Research Center for Environmental Health, Member of the German Center of Lung Research (DZL), Munich, Germany
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29
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Pilz AC, Schielein MC, Schuster B, Heinrich L, Haufe E, Abraham S, Heratizadeh A, Harder I, Kleinheinz A, Wollenberg A, Wiemers F, Weisshaar E, Augustin M, von Kiedrowski R, Pawlak M, Schäkel K, Wildberger J, Hilgers M, Werfel T, Weidinger S, Schmitt J, Biedermann T, Zink A. Atopic Dermatitis: Disease Characteristics and Comorbidities in Smoking and Nonsmoking Patients from the TREATgermany Registry. J Eur Acad Dermatol Venereol 2021; 36:413-421. [PMID: 34743344 DOI: 10.1111/jdv.17789] [Citation(s) in RCA: 3] [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] [Received: 07/08/2021] [Revised: 09/15/2021] [Accepted: 10/22/2021] [Indexed: 11/27/2022]
Abstract
BACKGROUND Atopic dermatitis (AD) is a chronic inflammatory skin disease with a multifactorial genesis including genetic predispositions and environmental risk and trigger factors. One of the latter possibly is smoking, indicated by an increased prevalence of AD in adults and children that are actively or passively exposed to cigarette smoke. OBJECTIVES In this study AD characteristics and its atopic comorbidities are compared in smoking and nonsmoking AD patients. METHODS TREATgermany is a non-interventional clinical registry which includes patients with moderate to severe AD in Germany. Baseline data of patients included into TREATgermany from inception in June 2016 to April 2020 in 39 sites across Germany was analyzed comparing AD disease characteristics and comorbidities in smokers versus non-smokers. RESULTS Of 921 patients, 908 (male: 58.7%) with a mean age of 41.9 ± 14.4 reported their smoking status. The objective Scoring of Atopic Dermatitis (oSCORAD) did not differ between smokers (n=352; 38.8%) and nonsmokers, however lesions' intensity of oozing/crusts and excoriations as well as patient global assessment scores (PGA) of AD severity were higher in smoking as opposed to nonsmoking patients. Smokers reported a lower number of weeks with well-controlled AD and more severe pruritus than nonsmokers. Total IgE levels were more elevated in smokers and they displayed a younger age at initial diagnosis of bronchial asthma. After adjustment for potential confounders, the increased intensity of oozing/crusts, the reduced number of weeks with well-controlled AD and the greater pruritus remained different in smokers compared to nonsmokers. In addition, smoking patients with adult-onset AD showed a 2.5 times higher chance of involvement of the feet. CONCLUSIONS German registry data indicate that AD patients who smoke have a higher disease burden with a different distribution pattern of lesions in adult-onset AD.
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Affiliation(s)
- A C Pilz
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany
| | - M C Schielein
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany
| | - B Schuster
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany
| | - L Heinrich
- Center of Evidence-Based Healthcare, University Hospital Carl Gustav Carus and Carl Gustav Carus, Faculty of Medicine, Technische Universität Dresden
| | - E Haufe
- Center of Evidence-Based Healthcare, University Hospital Carl Gustav Carus and Carl Gustav Carus, Faculty of Medicine, Technische Universität Dresden
| | - S Abraham
- Department of Dermatology, University Allergy Center, Carl Gustav Carus Faculty of Medicine, Technische Universität Dresden
| | - A Heratizadeh
- Division of Immunodermatology and Allergy Research, Department of Dermatology and Allergy, Hannover Medical School, Hannover
| | - I Harder
- Center for Inflammatory Skin Diseases, Department of Dermatology and Allergy, University Hospital Schleswig-Holstein, Campus Kiel
| | - A Kleinheinz
- Clinics for Dermatology, Elbe Klinikum Buxtehude
| | - A Wollenberg
- Clinics and Outpatient Clinics for Dermatology and Allergy, LMU Munich
| | - F Wiemers
- Practice Dr. med. Franca Wiemers, Leipzig
| | - E Weisshaar
- Occupational Dermatology, Department of Dermatology, University of Heidelberg
| | - M Augustin
- Institute for Health Services Research in Dermatology Hamburg, University Medical Center Hamburg Eppendorf
| | | | - M Pawlak
- Practice Dr. med, Anika Hünermund and Mario Pawlak, Heilbad Heiligenstadt
| | - K Schäkel
- Department of Dermatology, Ruprecht-Karls University Heidelberg
| | | | - M Hilgers
- Clinics for Dermatology and Allergy, University Hospital Aachen
| | - T Werfel
- Division of Immunodermatology and Allergy Research, Department of Dermatology and Allergy, Hannover Medical School, Hannover
| | - S Weidinger
- Center for Inflammatory Skin Diseases, Department of Dermatology and Allergy, University Hospital Schleswig-Holstein, Campus Kiel
| | - J Schmitt
- Center of Evidence-Based Healthcare, University Hospital Carl Gustav Carus and Carl Gustav Carus, Faculty of Medicine, Technische Universität Dresden
| | - T Biedermann
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany
| | - A Zink
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany
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Iuliano C, Kaesler S, Biedermann T. 276 Targeting Mast-Cell Plasticity Re-Shapes the Tumor Microenvironment of Melanoma. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.08.282] [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: 11/16/2022]
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31
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Pilz AC, Durner V, Schielein MC, Schuster B, Beckmann J, Biedermann T, Eyerich K, Zink A. Addictions in patients with atopic dermatitis: a cross-sectional pilot study in Germany. J Eur Acad Dermatol Venereol 2021; 36:84-90. [PMID: 34585798 DOI: 10.1111/jdv.17708] [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] [Received: 04/15/2021] [Accepted: 08/26/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND Atopic dermatitis (AD) is the most common chronic inflammatory skin disease worldwide and displays many atopic, but also non-atopic comorbidities. Among the latter, mental health disorders such as depression have been extensively studied. However, data on addictions are still rare. OBJECTIVES The aim of this study was to assess the prevalence of different kinds of addictions in adult AD patients using a single-centre approach. METHODS This non-interventional cross-sectional study was performed from 03/2020 to 05/2020 at the Department of Dermatology of a large German university hospital. Participants with a diagnosis of AD confirmed by a dermatologist answered questions about disease severity (patient-oriented eczema measure, POEM), quality of life (Dermatology Life Quality Index, DLQI) and smoking habits. They were screened for problematic alcohol consumption, drug abuse, internet addiction and pathological gambling using internationally established and validated questionnaires. RESULTS 157 patients (56.1% female; mean age of 49.9 ± 20.4) with an average POEM of 13.7 ± 7.5 and DLQI of 6.1 ± 5.4 were evaluated. 14.1% were identified as regular smokers, 12.1% screened positive for alcohol dependency, 6.4% for drug use disorders, 4.5% for Internet addiction and 3.2% for pathological gambling. Co-occurrences of different addictions were observed, and a positive correlation was noted between DLQI scores and smoking. CONCLUSIONS In summary, this study hints at elevated positive screening rates for problematic alcohol consumption, drug use disorders, Internet addiction and problem gambling compared with the general population. Screening routinely for addictions may improve patient-centred health care of AD patients.
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Affiliation(s)
- A C Pilz
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany
| | - V Durner
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany.,Department of Sport and Health Sciences, Chair of Sport Psychology, Technical University of Munich, Munich, Germany
| | - M C Schielein
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany.,Division of Dermatology and Venereology, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
| | - B Schuster
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany
| | - J Beckmann
- Department of Sport and Health Sciences, Chair of Sport Psychology, Technical University of Munich, Munich, Germany.,School of Human Movement and Nutrition Sciences, The University of Queensland, St Lucia, Qld, Australia
| | - T Biedermann
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany
| | - K Eyerich
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany.,Division of Dermatology and Venereology, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
| | - A Zink
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany.,Division of Dermatology and Venereology, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
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32
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Tomsitz D, Biedermann T. Successful treatment of disseminated superficial actinic porokeratosis with topical 2% cholesterol/ 2% lovastatin cream: a case series with 7 patients. J Eur Acad Dermatol Venereol 2021; 36:e52-e54. [PMID: 34418182 DOI: 10.1111/jdv.17619] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 08/11/2021] [Indexed: 11/30/2022]
Affiliation(s)
- D Tomsitz
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany
| | - T Biedermann
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany
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Wahlsten A, Rütsche D, Nanni M, Giampietro C, Biedermann T, Reichmann E, Mazza E. Mechanical stimulation induces rapid fibroblast proliferation and accelerates the early maturation of human skin substitutes. Biomaterials 2021; 273:120779. [PMID: 33932701 DOI: 10.1016/j.biomaterials.2021.120779] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [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: 07/08/2020] [Revised: 02/28/2021] [Accepted: 03/20/2021] [Indexed: 11/19/2022]
Abstract
The clinical treatment of large, full-thickness skin injuries with tissue-engineered autologous dermo-epidermal skin substitutes is an emerging alternative to split-thickness skin grafting. However, their production requires about one month of in vitro cell and tissue culture, which is a significant drawback for the treatment of patients with severe skin defects. With the aim to reduce the production time, we developed a new dynamic bioreactor setup that applies cyclic biaxial tension to collagen hydrogels for skin tissue engineering. By reliably controlling the time history of mechanical loading, the dynamic culturing results in a three-fold increase in collagen hydrogel stiffness and stimulates the embedded fibroblasts to enter the cell cycle. As a result, the number of fibroblasts is increased by 75% compared to under corresponding static culturing. Enhanced fibroblast proliferation promotes expression of dermal extracellular matrix proteins, keratinocyte proliferation, and the early establishment of the epidermis. The time required for early tissue maturation can therefore be reduced by one week. Analysis of the separate effects of cyclic loading, matrix stiffening, and interstitial fluid flow indicates that cyclic deformation is the dominant biophysical factor determining fibroblast proliferation, while tissue stiffening plays a lesser role. Local differences in the direction of deformation (in-plane equibiaxial vs. uniaxial strain) influence fibroblast orientation but not proliferation, nor the resulting tissue properties. Importantly, dynamic culturing does not activate fibroblast differentiation into myofibroblasts. The present work demonstrates that control of mechanobiological cues can be very effective in driving cell response toward a shorter production time for human skin substitutes.
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Affiliation(s)
- Adam Wahlsten
- Institute for Mechanical Systems, Department of Mechanical and Process Engineering, ETH Zurich, Leonhardstrasse 21, 8092 Zurich, Switzerland
| | - Dominic Rütsche
- Tissue Biology Research Unit, Department of Surgery, University Children's Hospital Zurich, Wagistrasse 12, 8952 Schlieren, Switzerland; Children's Research Center, University Children's Hospital Zurich, Steinwiesstrasse 75, 8032 Zurich, Switzerland
| | - Monica Nanni
- Institute for Mechanical Systems, Department of Mechanical and Process Engineering, ETH Zurich, Leonhardstrasse 21, 8092 Zurich, Switzerland; Tissue Biology Research Unit, Department of Surgery, University Children's Hospital Zurich, Wagistrasse 12, 8952 Schlieren, Switzerland; Children's Research Center, University Children's Hospital Zurich, Steinwiesstrasse 75, 8032 Zurich, Switzerland
| | - Costanza Giampietro
- Institute for Mechanical Systems, Department of Mechanical and Process Engineering, ETH Zurich, Leonhardstrasse 21, 8092 Zurich, Switzerland; Empa, Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 Dübendorf, Switzerland
| | - Thomas Biedermann
- Tissue Biology Research Unit, Department of Surgery, University Children's Hospital Zurich, Wagistrasse 12, 8952 Schlieren, Switzerland; Children's Research Center, University Children's Hospital Zurich, Steinwiesstrasse 75, 8032 Zurich, Switzerland
| | - Ernst Reichmann
- Tissue Biology Research Unit, Department of Surgery, University Children's Hospital Zurich, Wagistrasse 12, 8952 Schlieren, Switzerland; Children's Research Center, University Children's Hospital Zurich, Steinwiesstrasse 75, 8032 Zurich, Switzerland.
| | - Edoardo Mazza
- Institute for Mechanical Systems, Department of Mechanical and Process Engineering, ETH Zurich, Leonhardstrasse 21, 8092 Zurich, Switzerland; Empa, Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 Dübendorf, Switzerland.
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Hindelang B, Aguirre J, Berezhnoi A, Biedermann T, Darsow U, Eberlein B, Ntziachristos V. Quantification of skin sensitivity to ultraviolet radiation using ultrawideband optoacoustic mesoscopy. Br J Dermatol 2020; 184:352-354. [PMID: 32762054 DOI: 10.1111/bjd.19463] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 07/31/2020] [Accepted: 07/31/2020] [Indexed: 11/29/2022]
Affiliation(s)
- B Hindelang
- Clinic for Dermatology and Allergology at Biderstein, Technical University of Munich, Munich, Germany.,Chair of Biological Imaging, School of Medicine, Technical University of Munich, Munich, Germany.,Institute of Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Germany
| | - J Aguirre
- Chair of Biological Imaging, School of Medicine, Technical University of Munich, Munich, Germany.,Institute of Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Germany
| | - A Berezhnoi
- Chair of Biological Imaging, School of Medicine, Technical University of Munich, Munich, Germany.,Institute of Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Germany
| | - T Biedermann
- Clinic for Dermatology and Allergology at Biderstein, Technical University of Munich, Munich, Germany
| | - U Darsow
- Clinic for Dermatology and Allergology at Biderstein, Technical University of Munich, Munich, Germany
| | - B Eberlein
- Clinic for Dermatology and Allergology at Biderstein, Technical University of Munich, Munich, Germany
| | - V Ntziachristos
- Chair of Biological Imaging, School of Medicine, Technical University of Munich, Munich, Germany.,Institute of Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Germany
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35
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de Wijs LEM, Thyssen JP, Vestergaard C, Thio HB, Kunkeler ACM, Biedermann T, Hijnen DJ. An approach for the transition from systemic immunosuppressants to dupilumab. J Eur Acad Dermatol Venereol 2020; 35:e221-e223. [PMID: 32920932 DOI: 10.1111/jdv.16941] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- L E M de Wijs
- Department of Dermatology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - J P Thyssen
- Department of Dermatology and Allergy, Herlev-Gentofte Hospital, University of Copenhagen, Denmark
| | - C Vestergaard
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| | - H B Thio
- Department of Dermatology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - A C M Kunkeler
- Department of Dermatology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - T Biedermann
- Department of Dermatology and Allergy, Technical University of Munich, Munich, Germany
| | - D J Hijnen
- Department of Dermatology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
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Pfaar O, Klimek L, Worm M, Bergmann KC, Bieber T, Buhl R, Buters J, Darsow U, Keil T, Kleine-Tebbe J, Lau S, Maurer M, Merk H, Mösges R, Saloga J, Staubach P, Stute P, Rabe K, Rabe U, Vogelmeier C, Biedermann T, Jung K, Schlenter W, Ring J, Chaker A, Wehrmann W, Becker S, Mülleneisen N, Nemat K, Czech W, Wrede H, Brehler R, Fuchs T, Tomazic PV, Aberer W, Fink-Wagner A, Horak F, Wöhrl S, Niederberger-Leppin V, Pali-Schöll I, Pohl W, Roller-Wirnsberger R, Spranger O, Valenta R, Akdis M, Akdis C, Hoffmann-Sommergruber K, Jutel M, Matricardi P, Spertini F, Khaltaev N, Michel JP, Nicod L, Schmid-Grendelmeier P, Hamelmann E, Jakob T, Werfel T, Wagenmann M, Taube C, Gerstlauer M, Vogelberg C, Bousquet J, Zuberbier T. [Handling of allergen immunotherapy in the COVID-19 pandemic: An ARIA-EAACI-AeDA-GPA-DGAKI Position Paper (Pocket-Guide)]. Laryngorhinootologie 2020; 99:676-679. [PMID: 32823368 DOI: 10.1055/a-1170-8426] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- O Pfaar
- Sektion Rhinologie und Allergologie, Klinik für Hals-, Nasen- und Ohrenheilkunde, Universitätsklinikum Gießen und Marburg, Philipps-Universität Marburg
| | - L Klimek
- Zentrum für Rhinologie und Allergologie, Wiesbaden
| | - M Worm
- Comprehensive Allergy Centre Charité, Klinik für Dermatologie, Venerologie und Allergologie, Charité-Universitätsmedizin Berlin
| | - K-C Bergmann
- Comprehensive Allergy Centre Charité, Klinik für Dermatologie, Venerologie und Allergologie, Charité-Universitätsmedizin Berlin
| | - T Bieber
- Klinik und Poliklinik für Dermatologie und Allergologie, Universitätsklinikum Bonn
| | - R Buhl
- III. Medizinische Klinik und Poliklinik Hämatologie, Internistische Onkologie und Pneumologie, Universitätsmedizin Mainz
| | - J Buters
- Zentrum Allergie und Umwelt (ZAUM), Technische Universität und Helmholtz-Zentrum München
| | - U Darsow
- Klinik und Poliklinik für Dermatologie und Allergologie der Technischen Universität München
| | - T Keil
- Institut für klinische Epidemiologie und Biometrie, Julius-Maximilian-Universität, Würzburg
| | | | - S Lau
- Klinik für Pädiatrie m. S. Pneumologie, Immunologie und Intensivmedizin, Charité-Universitätsmedizin Berlin
| | - M Maurer
- Dermatologische Allergologie, Allergie-Centrum Charité, Klinik für Dermatologie, Venerologie und Allergologie, Charité-Universitätsmedizin Berlin
| | - H Merk
- Abteilung Dermatologie & Allergologie, RWTH Aachen Universität
| | - R Mösges
- Medizinische Fakultät der Universität zu Köln.,CRI - Clinical Research International Ltd., Hamburg.,ClinCompetence Cologne GmbH, Köln
| | - J Saloga
- Hautklinik, Universitätsmedizin, Johannes-Gutenberg-Universität, Mainz
| | - P Staubach
- Hautklinik, Universitätsmedizin, Johannes-Gutenberg-Universität, Mainz
| | - P Stute
- Europäische Vereinigung für Vitalität und Aktives Altern, Leipzig
| | - K Rabe
- Abteilung für Pneumologie, LungenClinic Grosshansdorf
| | - U Rabe
- Klinik für Allergologie, Johanniter-Krankenhaus im Fläming Treuenbrietzen GmbH, Treuenbrietzen
| | - C Vogelmeier
- Klinik für Innere Medizin Schwerpunkt Pneumologie, Philipps-Universität Marburg
| | - T Biedermann
- Klinik und Poliklinik für Dermatologie und Allergologie der Technischen Universität München.,Einheit für Klinische Allergologie (EKA), Helmholtz-Zentrum München, Deutsches Forschungszentrum für Gesundheit und Umwelt (GmbH), Neuherberg
| | - K Jung
- Praxis für Dermatologie, Immunologie und Allergologie, Erfurt
| | - W Schlenter
- Ärzteverband Deutscher Allergologen, Dreieich
| | - J Ring
- Haut- und Laserzentrum an der Oper, München.,Academia, München
| | - A Chaker
- HNO-Klinik des Klinikums rechts der Isar, Technische Universität München.,Zentrum Allergie und Umwelt, München (ZAUM); Helmholtz-Zentrum München
| | - W Wehrmann
- Praxis für Dermatologie und Allergologie, Münster
| | - S Becker
- Klinik für Hals-, Nasen- und Ohrenheilkunde, Universität Tübingen
| | | | - K Nemat
- Universitäts AllergieCentrum (UAC), Universitätsklinikum Carl Gustav Carus, Dresden.,Praxis für Kinderpneumologie/Allergologie am Kinderzentrum Dresden (Kid), Dresden
| | - W Czech
- Praxis für Dermatologie, Allergologie, Phlebologie, Villingen-Schwenningen
| | - H Wrede
- HNO- und Allergiezentrum Herford
| | - R Brehler
- Klinik für Allergologie, Berufsdermatologie und Umweltmedizin, Universitätsklinikum Münster
| | - T Fuchs
- Klinik für Dermatologie, Venerologie und Allergologie, Universitätsklinikum, Georg-August-Universität, Göttingen
| | - P-V Tomazic
- Klinische Abteilung für Allgemeine HNO, Medizinische Universität Graz, Österreich
| | - W Aberer
- Universitätsklinik für Dermatologie und Venerologie, Medizinische Universität Graz, Österreich
| | - A Fink-Wagner
- Global Allergy and Airways Patient Platform GAAPP, Wien, Österreich
| | - F Horak
- Praxis für Hals-, Nasen- und Ohrenkrankheiten, Wien, Österreich
| | - S Wöhrl
- Floridsdorfer Allergiezentrum, Wien, Österreich
| | - V Niederberger-Leppin
- Universitätsklinik für Hals-, Nasen- und Ohrenkrankheiten, Medizinische Universität Wien, Österreich
| | - I Pali-Schöll
- Institut für Komparative Medizin, Interdisziplinäres Messerli Forschungsinstitut, Veterinärmedizinische Universität Wien und Medizinische Universität Wien, Österreich.,Institut für Pathophysiologie und Allergieforschung, Medizinische Universität Wien, Österreich
| | - W Pohl
- Abteilung für Atmungs- und Lungenkrankheiten, Krankenhaus Hietzing, Wien, Österreich
| | - R Roller-Wirnsberger
- Universitätsklinik für Innere Medizin, Medizinische Universität Graz, Österreich
| | - O Spranger
- Global Allergy and Airways Patient Platform GAAPP, Wien, Österreich
| | - R Valenta
- Institut für Pathophysiologie, Medizinische Universität Wien, Österreich
| | - M Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Schweiz
| | - C Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Schweiz
| | - K Hoffmann-Sommergruber
- Institut für Pathophysiologie und Allergieforschung, Medizinische Universität Wien, Österreich
| | - M Jutel
- Department of Clinical Immunology, Medizinische Universität Breslau, Polen
| | | | - F Spertini
- Division of Allergy and Immunology, Centre Hospitalier Universitaire Vaudois, Lausanne, Schweiz
| | | | - J-P Michel
- Department of Rehabilitation and Geriatrics, University of Geneva, Genf, Schweiz
| | - L Nicod
- Clinique Cecil, Hirslanden-Gruppe, Lausanne, Schweiz.,Abteilung Pneumologie, Centre hospitalier universitaire vaudois, Lausanne, Schweiz
| | | | - E Hamelmann
- Kinderzentrum Bethel, Evangelisches Klinikum Bethel, Universitätsmedizin OWL der Universität Bielefeld
| | - T Jakob
- Klinik für Dermatologie, Allergologie, Universitätsklinikum Gießen, UKGM, Justus-Liebig-Universität Gießen
| | - T Werfel
- Klinik für Dermatologie, Allergologie und Venerologie, Medizinische Hochschule Hannover
| | | | - C Taube
- Klinik für Pneumologie, Ruhrlandklinik, Universitätsmedizin Essen
| | - M Gerstlauer
- Abteilung für Kinderpneumologie und Allergologie, Medizinische Universität Augsburg
| | - C Vogelberg
- Universitäts AllergieCentrum (UAC), Universitätsklinikum Carl Gustav Carus, Dresden.,Fachbereich Kinderpneumologie und Allergologie, Universitätsklinikum Carl Gustav Carus, Technische Universität Dresden
| | - J Bousquet
- MACVIA-France, Fondation partenariale FMC VIA-LR, Montpellier, Frankreich.,INSERM U 1168, VIMA: Ageing and Chronic Diseases Epidemiological and Public Health Approaches, Villejuif.,Université Versailles St-Quentin-en-Yvelines, UMR-S 1168, Montigny le Bretonneux, Frankreich.,Euforea, Brussels, Belgien.,Charité-Universitätsmedizin Berlin, Humboldt-Universität zu Berlin.,Berlin Institute of Health, Comprehensive Allergy Center, Department of Dermatology and Allergy, Berlin
| | - T Zuberbier
- Comprehensive Allergy Centre Charité, Klinik für Dermatologie, Venerologie und Allergologie, Charité-Universitätsmedizin Berlin
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37
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Wang R, Uretzki M, Boehmer D, Hein R, Biedermann T, Posch C. Severe thrombocytopenia and excellent response following combined immune checkpoint inhibition for metastatic malignant melanoma. J Eur Acad Dermatol Venereol 2020; 35:e89-e92. [PMID: 32701189 DOI: 10.1111/jdv.16829] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- R Wang
- Department of Dermatology and Allergy Biederstein, Technical University Munich, Munich, Germany
| | - M Uretzki
- Department of Dermatology and Allergy Biederstein, Technical University Munich, Munich, Germany
| | - D Boehmer
- Department of Dermatology and Allergy Biederstein, Technical University Munich, Munich, Germany
| | - R Hein
- Department of Dermatology and Allergy Biederstein, Technical University Munich, Munich, Germany
| | - T Biedermann
- Department of Dermatology and Allergy Biederstein, Technical University Munich, Munich, Germany
| | - C Posch
- Department of Dermatology and Allergy Biederstein, Technical University Munich, Munich, Germany
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Affiliation(s)
- P Schmidle
- Department of Dermatology and Allergy, School of Medicine, German Cancer Consortium (DKTK), Technical University of Munich, Munich, Germany
| | - T Biedermann
- Department of Dermatology and Allergy, School of Medicine, German Cancer Consortium (DKTK), Technical University of Munich, Munich, Germany
| | - C Posch
- Department of Dermatology and Allergy, School of Medicine, German Cancer Consortium (DKTK), Technical University of Munich, Munich, Germany.,Faculty of Medicine, Sigmund Freud Universität Wien, Wien, Austria
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39
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Kaczmarczyk R, Bauerdorf F, Tizek L, Biedermann T, Zink A. A network analysis of the EADV 2019 conference. J Eur Acad Dermatol Venereol 2020; 34:e820-e822. [PMID: 32485060 DOI: 10.1111/jdv.16700] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 05/15/2020] [Accepted: 05/22/2020] [Indexed: 01/08/2023]
Affiliation(s)
- R Kaczmarczyk
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany
| | - F Bauerdorf
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany
| | - L Tizek
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany
| | - T Biedermann
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany
| | - A Zink
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany
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40
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Eberlein B, Mehlich J, Reidenbach K, Pilz C, Hilger C, Darsow U, Brockow K, Biedermann T. Negative Oral Provocation Test With Porcine Pancreatic Enzyme Plus Cofactors Despite Confirmed α-Gal Syndrome. J Investig Allergol Clin Immunol 2020; 30:468-469. [PMID: 32490824 DOI: 10.18176/jiaci.0513] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- B Eberlein
- Department of Dermatology and Allergy Biederstein, School of Medicine, Technische Universität München, Munich, Germany
| | - J Mehlich
- Department of Dermatology and Allergy Biederstein, School of Medicine, Technische Universität München, Munich, Germany
| | - K Reidenbach
- Department of Dermatology and Allergy Biederstein, School of Medicine, Technische Universität München, Munich, Germany
| | - C Pilz
- Department of Dermatology and Allergy Biederstein, School of Medicine, Technische Universität München, Munich, Germany
| | - C Hilger
- Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
| | - U Darsow
- Department of Dermatology and Allergy Biederstein, School of Medicine, Technische Universität München, Munich, Germany
| | - K Brockow
- Department of Dermatology and Allergy Biederstein, School of Medicine, Technische Universität München, Munich, Germany
| | - T Biedermann
- Department of Dermatology and Allergy Biederstein, School of Medicine, Technische Universität München, Munich, Germany
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Heratizadeh A, Haufe E, Stölzl D, Abraham S, Heinrich L, Kleinheinz A, Wollenberg A, Weisshaar E, Augustin M, Wiemers F, Zink A, von Kiedrowski R, Hilgers M, Worm M, Pawlak M, Sticherling M, Fell I, Handrick C, Schäkel K, Staubach-Renz P, Asmussen A, Schwarz B, Bell M, Effendy I, Bieber T, Homey B, Gerlach B, Tchitcherina E, Stahl M, Schwichtenberg U, Rossbacher J, Buck P, Mempel M, Beissert S, Biedermann T, Weidinger S, Schmitt J, Werfel T. Baseline characteristics, disease severity and treatment history of patients with atopic dermatitis included in the German AD Registry TREATgermany. J Eur Acad Dermatol Venereol 2020; 34:1263-1272. [PMID: 31721316 DOI: 10.1111/jdv.16078] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 10/17/2019] [Indexed: 01/26/2023]
Abstract
BACKGROUND The Atopic Dermatitis (AD) TREATgermany registry was initiated by the German Society for Dermatology (DDG) in 2011 to evaluate the 'real-life' situation of health care for patients with AD. OBJECTIVES Interim data analysis on baseline characteristics as well as current and prescribed systemic treatments of the TREATgermany registry patients. METHODS Patients (≥18 years) with moderate-to-severe AD [objective (o)SCORAD > 20], or with current or previous anti-inflammatory systemic treatment for AD within 24 months, were included and are followed up over at least 24 months. To assess clinical signs, the eczema area severity index (EASI, 0-72), the oSCORAD (0-83) and the Investigator Global Assessment (IGA; 6-point scale) were used. The disease severity was globally scored by the patients [Patient Global Assessment (PGA); six-step Likert scale]. Disease symptoms were assessed by the patient-oriented eczema measure (POEM, 0-28) and numeric rating scales (NRS, 0-10). Health-related quality of life was measured using the dermatological life quality index (DLQI, 0-30). RESULTS A total of 612 patients were recruited across 32 sites between 06/2016 and 01/2019 (mean age: 42.6 ± 14.2 years; mean oSCORAD: 40.8 ± 16.3). The mean POEM score was 16.3 ± 7.5. Pruritus was rated highest among subjective symptoms (NRS: 5.4 ± 2.7). The mean DLQI value was 11.3 ± 7.5. The frequency of arterial hypertension was lower (20.8%) compared with the general population, whilst this was higher for depression (10%). More than 60% of the patients had received systemic glucocorticosteroids, and 36.8% had received cyclosporine A prior to inclusion. Dupilumab was the leading substance documented as either 'current' (12.1%) or 'prescribed' (31.4%) at baseline. CONCLUSIONS These 'real-life' data clearly demonstrate the substantial disease burden. Most of TREATgermany patients were already treated with or prescribed dupilumab at baseline. Moreover, current findings indicate the urgent need for further alternative agents in order to achieve a perceptible improvement of quality of life of patients with moderate-to-severe AD.
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Affiliation(s)
- A Heratizadeh
- Division of Immunodermatology and Allergy Research, Department of Dermatology and Allergy, Hannover Medical School, Hannover, Germany
| | - E Haufe
- Center of Evidence-based Healthcare, University Hospital and Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - D Stölzl
- Department of Dermatology and Allergy, Center for Inflammatory Skin Diseases, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - S Abraham
- Department of Dermatology, University Allergy Center, Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - L Heinrich
- Center of Evidence-based Healthcare, University Hospital and Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - A Kleinheinz
- Clinics for Dermatology, Elbe Klinikum Buxtehude, Buxtehude, Germany
| | - A Wollenberg
- Clinics and Outpatient Clinics for Dermatology and Allergy, LMU Munich, Munich, Germany
| | - E Weisshaar
- Occupational Dermatology, Department of Dermatology, University Hospital Heidelberg, Heidelberg, Germany
| | - M Augustin
- Insitute for Health Services Research in Dermatology Hamburg, University Medical Center Hamburg Eppendorf, Hamburg, Germany
| | - F Wiemers
- Practice Dr. med. Franca Wiemers, Leipzig, Germany
| | - A Zink
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany.,Clinical Unit Allergology, Helmholtz Zentrum München, German Research Center for Environmental Health GmbH, Munich, Germany
| | - R von Kiedrowski
- CMSS - Company for Medical Study and Service, Selters/Westerwald, Germany
| | - M Hilgers
- Clinics for Dermatology and Allergy, University Hospital Aachen, Aachen, Germany
| | - M Worm
- Division of Allergy and Immunology, Department of Dermatology, Venerology and Allergy, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - M Pawlak
- Practice Dr. med. Anika Hünermund and Mario Pawlak, Heilbad Heiligenstadt, Germany
| | - M Sticherling
- Department of Dermatology, University Hospital, Friedrich Alexander University Erlangen-Nurnberg, Erlangen, Germany
| | - I Fell
- Hautmedizin Bad Soden, Bad Soden, Germany
| | - C Handrick
- Practice Dr. med. Christiane Handrick, Berlin, Germany
| | - K Schäkel
- Department of Dermatology, Ruprecht-Karls University Heidelberg, Heidelberg, Germany
| | - P Staubach-Renz
- Department of Dermatology and Allergy, University Medical Center Mainz, Mainz, Germany
| | - A Asmussen
- Practice Dermatologie an der Lesum, Bremen, Germany
| | - B Schwarz
- Practice Dr. med. Beate Schwarz, Langenau, Germany
| | - M Bell
- Practice Dr. Magnus Bell, Thomas Kaiser, Andernach, Germany
| | - I Effendy
- Department of Dermatology, Hospital Rosenhoehe, Bielefeld, Germany
| | - T Bieber
- Department of Dermatology and Allergy, Rheinische Friedrich-Wilhelms-University Bonn, Bonn, Germany
| | - B Homey
- Department of Dermatology, Heinrich-Heine-University Duesseldorf, Düsseldorf, Germany
| | - B Gerlach
- Practice Dr. med. Beatrice Gerlach, Dresden, Germany
| | - E Tchitcherina
- Practice Dr. med. Ekaterina Tchitcherina, Friedberg/Hessen, Germany
| | - M Stahl
- Practice Dr. med. Maren Stahl, Osterode, Germany
| | | | | | - P Buck
- Goldbek Medical, Hamburg, Germany
| | - M Mempel
- Practice Prof. Dr. med. Martin Mempel, Elmshorn, Germany
| | - S Beissert
- Department of Dermatology, University Allergy Center, Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - T Biedermann
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany.,Clinical Unit Allergology, Helmholtz Zentrum München, German Research Center for Environmental Health GmbH, Munich, Germany
| | - S Weidinger
- Department of Dermatology and Allergy, Center for Inflammatory Skin Diseases, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - J Schmitt
- Center of Evidence-based Healthcare, University Hospital and Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - T Werfel
- Division of Immunodermatology and Allergy Research, Department of Dermatology and Allergy, Hannover Medical School, Hannover, Germany
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Abraham S, Haufe E, Harder I, Heratizadeh A, Kleinheinz A, Wollenberg A, Weisshaar E, Augustin M, Wiemers F, Zink A, Biedermann T, von Kiedrowski R, Hilgers M, Worm M, Pawlak M, Sticherling M, Fell I, Handrick C, Schäkel K, Staubach P, Asmussen A, Schwarz B, Bell M, Neubert K, Effendy I, Bieber T, Homey B, Gerlach B, Tchitcherina E, Stahl M, Schwichtenberg U, Rossbacher J, Buck P, Mempel M, Beissert S, Werfel T, Weidinger S, Schmitt J. Implementation of dupilumab in routine care of atopic eczema: results from the German national registry TREATgermany. Br J Dermatol 2020; 183:382-384. [PMID: 32068242 DOI: 10.1111/bjd.18958] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- S Abraham
- Department of Dermatology, University Allergy Center, Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - E Haufe
- Center of Evidence-Based Healthcare, University Hospital and Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - I Harder
- Center for Inflammatory Skin Diseases, Department of Dermatology and Allergy, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - A Heratizadeh
- Division of Immunodermatology and Allergy Research, Department of Dermatology and Allergy, Hannover Medical School, Hannover, Germany
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - S Beissert
- Department of Dermatology, University Allergy Center, Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - T Werfel
- Division of Immunodermatology and Allergy Research, Department of Dermatology and Allergy, Hannover Medical School, Hannover, Germany
| | - S Weidinger
- Center for Inflammatory Skin Diseases, Department of Dermatology and Allergy, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - J Schmitt
- Center of Evidence-Based Healthcare, University Hospital and Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
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Lauffer F, Jargosch M, Baghin V, Krause L, Kempf W, Absmaier‐Kijak M, Morelli M, Madonna S, Marsais F, Lepescheux L, Albanesi C, Müller N, Theis F, Schmidt‐Weber C, Eyerich S, Biedermann T, Vandeghinste N, Steidl S, Eyerich K. IL‐17C amplifies epithelial inflammation in human psoriasis and atopic eczema. J Eur Acad Dermatol Venereol 2020; 34:800-809. [DOI: 10.1111/jdv.16126] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Accepted: 11/19/2019] [Indexed: 12/11/2022]
Affiliation(s)
- F. Lauffer
- Department of Dermatology and Allergy Technical University of Munich Munich Germany
| | - M. Jargosch
- Department of Dermatology and Allergy Technical University of Munich Munich Germany
| | - V. Baghin
- Department of Dermatology and Allergy Technical University of Munich Munich Germany
| | - L. Krause
- Institute of Computational Biology Helmholtz Center Munich Neuherberg Germany
| | - W. Kempf
- Department of Dermatology and Allergy Technical University of Munich Munich Germany
| | - M. Absmaier‐Kijak
- Department of Dermatology and Allergy Technical University of Munich Munich Germany
| | - M. Morelli
- Laboratory of Experimental Immunology IDI‐IRCCS Rome Italy
| | - S. Madonna
- Laboratory of Experimental Immunology IDI‐IRCCS Rome Italy
| | | | | | - C. Albanesi
- Laboratory of Experimental Immunology IDI‐IRCCS Rome Italy
| | - N.S. Müller
- Institute of Computational Biology Helmholtz Center Munich Neuherberg Germany
| | - F.J. Theis
- Institute of Computational Biology Helmholtz Center Munich Neuherberg Germany
- Department of Mathematics Technical University of Munich Garching Germany
| | - C. Schmidt‐Weber
- Center of Allergy and Environment (ZAUM) Helmholtzzentrum Munich Technical University of Munich Munich Germany
- German Center of Lung Research (DZL) Gießen Germany
| | - S. Eyerich
- Center of Allergy and Environment (ZAUM) Helmholtzzentrum Munich Technical University of Munich Munich Germany
| | - T. Biedermann
- Department of Dermatology and Allergy Technical University of Munich Munich Germany
| | | | | | - K. Eyerich
- Department of Dermatology and Allergy Technical University of Munich Munich Germany
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Hindelang B, Schönmann C, Aguirre J, Ntziachristos V, Biedermann T, Darsow U. Optoakustische Bildgebung – Licht rein, Schall raus? Akt Dermatol 2020. [DOI: 10.1055/a-1072-7195] [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: 10/24/2022]
Abstract
ZusammenfassungDie optoakustische Bildgebung ist eine neuartige Bildgebungsmodalität, welche auf der Aufzeichnung und Verarbeitung von Ultraschallsignalen basiert, die im Gewebe durch Absorption von Laserlicht entstehen. Die Methode vereint guten, auf Lichtabsorption beruhenden Kontrast mit hoher Eindringtiefe und ermöglicht sowohl morphologische als auch molekulare und funktionelle Bildgebung. Sie kann mit oder ohne Kontrastmittel eingesetzt werden und ist frei von ionisierender Strahlung. Darüber hinaus ist die Technik skalierbar und kann somit zur makroskopischen, mesoskopischen und mikroskopischen Bildgebung verwendet werden.In den letzten Jahren wurden eine Reihe verschiedener Systeme zur optoakustischen Bildgebung entwickelt und in vielfältigen Bereichen der präklinischen und klinischen Forschung eingesetzt. In der Dermatologie zeigten sich vielversprechende Anwendungsgebiete der Optoakustik insbesondere in der Untersuchung von Melanomen, Wächterlymphknoten und nicht-melanozytärem Hautkrebs sowie in der Charakterisierung von entzündlichen Hauterkrankungen.In diesem Review sollen die technischen Grundlagen der optoakustischen Bildgebung erläutert sowie der derzeitige Stand der Forschung hinsichtlich Anwendungsbereiche makroskopischer, mesoskopischer und mikroskopischer optoakustischer Systeme beschrieben und diskutiert werden.
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Affiliation(s)
- B. Hindelang
- Klinik und Poliklinik für Dermatologie und Allergologie am Biederstein, Technische Universität München
| | - C. Schönmann
- Klinik und Poliklinik für Dermatologie und Allergologie am Biederstein, Technische Universität München
- Lehrstuhl für biologische Bildgebung, Technische Universität München
- Institute of Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg
| | - J. Aguirre
- Lehrstuhl für biologische Bildgebung, Technische Universität München
- Institute of Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg
| | - V. Ntziachristos
- Lehrstuhl für biologische Bildgebung, Technische Universität München
- Institute of Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg
| | - T. Biedermann
- Klinik und Poliklinik für Dermatologie und Allergologie am Biederstein, Technische Universität München
| | - U. Darsow
- Klinik und Poliklinik für Dermatologie und Allergologie am Biederstein, Technische Universität München
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45
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Schuster B, Ziehfreund S, Albrecht H, Spinner CD, Biedermann T, Peifer C, Zink A. Happiness in dermatology: a holistic evaluation of the mental burden of skin diseases. J Eur Acad Dermatol Venereol 2020; 34:1331-1339. [PMID: 31838769 DOI: 10.1111/jdv.16146] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 11/20/2019] [Indexed: 12/19/2022]
Abstract
BACKGROUND According to the World Health Organization, mental health is a state of well-being and not merely the absence of disease. However, studies exploring subjective well-being in patients with skin diseases are very rare. OBJECTIVES To assess subjective well-being, i.e. 'happiness', in patients with different skin diseases and to compare them to other patient groups and healthy controls. METHODS A cross-sectional study was conducted from 12/2017 to 04/2019. Patients receiving in- or outpatient care for psoriasis, atopic eczema, nummular eczema, mastocytosis, skin cancer (malignant melanoma and keratinocyte carcinoma), human immunodeficiency virus (HIV) or chronic inflammatory bowel diseases (Crohn's disease and ulcerative colitis) were recruited at two hospitals in Bavaria, Germany. Healthy individuals living in or near Munich served as a control group. All participants filled in a questionnaire assessing happiness, measured as positive affect (PA), negative affect and satisfaction with life (SWL; together representing subjective well-being) and a heuristic evaluation of one's own happiness. RESULTS Data from 229 dermatologic patients (53.3 ± 18.5 years, 48% women), 49 patients with inflammatory bowel diseases (48.9 ± 18.7 years, 43% women), 49 patients with HIV (46 ± 10.1 years, 10% women) and 106 healthy controls (38.4 ± 13.4 years, 49% women) were analysed. Compared to the controls, dermatologic patients reported lower heuristic happiness (P = 0.023) and PA (P = 0.001) but higher SWL (P = 0.043). Patients with psoriasis and atopic eczema reported the lowest happiness, as they reported significantly lower PA (P = 0.032 and P < 0.001) and heuristic happiness (P = 0.002 and P = 0.015) than the control group. Patients with skin cancer reported higher SWL than the control group (P = 0.003). Dermatologic patients reported lower happiness than patients with HIV but reported greater happiness than patients with IBD. CONCLUSIONS Dermatologic patients experience lower levels of happiness, especially PA, compared to healthy controls. As PA is linked to desirable health outcomes, targeting PA could be a promising holistic approach for the treatment of skin diseases.
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Affiliation(s)
- B Schuster
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany.,Institute for Medical Information Processing, Biometry, and Epidemiology (IBE), Pettenkofer School of Public Health, LMU Munich, Munich, Germany
| | - S Ziehfreund
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany.,Institute for Medical Information Processing, Biometry, and Epidemiology (IBE), Pettenkofer School of Public Health, LMU Munich, Munich, Germany
| | - H Albrecht
- Department of Internal Medicine II, Hospital Neumarkt i.d.Opf., Neumarkt in der Oberpfalz, Germany
| | - C D Spinner
- Department of Medicine II, School of Medicine, Technical University of Munich, Munich, Germany
| | - T Biedermann
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany
| | - C Peifer
- Unit Applied Psychology in Work, Health, and Development, Faculty of Psychology, Ruhr University Bochum, Bochum, Germany
| | - A Zink
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany
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46
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Mazzone L, Moehrlen U, Ochsenbein‐Kölble N, Pontiggia L, Biedermann T, Reichmann E, Meuli M. Cover Image. J Tissue Eng Regen Med 2020. [DOI: 10.1002/term.3010] [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: 11/08/2022]
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47
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Thomas J, Küpper M, Batra R, Jargosch M, Atenhan A, Baghin V, Krause L, Lauffer F, Biedermann T, Theis FJ, Eyerich K, Schmidt-Weber CB, Eyerich S, Garzorz-Stark N. Corrigendum: Is the humoral immunity dispensable for the pathogenesis of psoriasis? J Eur Acad Dermatol Venereol 2019; 33:2380. [PMID: 31779039 DOI: 10.1111/jdv.16019] [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: 11/28/2022]
Affiliation(s)
- J Thomas
- ZAUM-Center of Allergy and Environment, Technical University and Helmholtz Munich, Munich, Germany
| | - M Küpper
- Department of Dermatology and Allergy, Technical University of Munich, Munich, Germany
| | - R Batra
- Department of Dermatology and Allergy, Technical University of Munich, Munich, Germany.,Institute of Computational Biology, Helmholtz Center Munich, Neuherberg, Germany
| | - M Jargosch
- Department of Dermatology and Allergy, Technical University of Munich, Munich, Germany
| | - A Atenhan
- ZAUM-Center of Allergy and Environment, Technical University and Helmholtz Munich, Munich, Germany
| | - V Baghin
- Department of Dermatology and Allergy, Technical University of Munich, Munich, Germany
| | - L Krause
- Institute of Computational Biology, Helmholtz Center Munich, Neuherberg, Germany
| | - F Lauffer
- Department of Dermatology and Allergy, Technical University of Munich, Munich, Germany
| | - T Biedermann
- Department of Dermatology and Allergy, Technical University of Munich, Munich, Germany
| | - F J Theis
- Institute of Computational Biology, Helmholtz Center Munich, Neuherberg, Germany.,Institute of Mathematics, Technical University of Munich, Garching, Germany
| | - K Eyerich
- Department of Dermatology and Allergy, Technical University of Munich, Munich, Germany
| | - C B Schmidt-Weber
- ZAUM-Center of Allergy and Environment, Technical University and Helmholtz Munich, Munich, Germany
| | - S Eyerich
- ZAUM-Center of Allergy and Environment, Technical University and Helmholtz Munich, Munich, Germany
| | - N Garzorz-Stark
- Department of Dermatology and Allergy, Technical University of Munich, Munich, Germany
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48
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Mazzone L, Moehrlen U, Ochsenbein-Kölble N, Pontiggia L, Biedermann T, Reichmann E, Meuli M. Bioengineering and in utero transplantation of fetal skin in the sheep model: A crucial step towards clinical application in human fetal spina bifida repair. J Tissue Eng Regen Med 2019; 14:58-65. [PMID: 31595702 DOI: 10.1002/term.2963] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 03/10/2019] [Revised: 08/02/2019] [Accepted: 09/05/2019] [Indexed: 11/09/2022]
Abstract
An intricate problem during open human fetal surgery for spina bifida regards back skin closure, particularly in those cases where the skin defect is much too large for primary closure. We hypothesize that tissue engineering of fetal skin might provide an adequate autologous skin substitute for in utero application in such situations. Eight sheep fetuses of four time-mated ewes underwent fetoscopic skin biopsy at 65 days of gestation. Fibroblasts and keratinocytes isolated from the biopsy were used to create fetal dermo-epidermal skin substitutes. These were transplanted on the fetuses by open fetal surgery at 90 days of gestation on skin defects (excisional wounds) created during the same procedure. Pregnancy was allowed to continue until euthanasia at 120 days of gestation. The graft area was analyzed macroscopically and microscopically. The transplanted fetal dermo-epidermal skin substitutes was well discernable in situ in three of the four fetuses available for analysis. Histology confirmed healed grafts with a close to natural histological skin architecture four weeks after in utero transplantation. This experimental study generates evidence that laboratory grown autologous fetal skin analogues can successfully be transplanted in utero. These results have clinical implications as an analogous procedure might be applied in human fetuses undergoing prenatal repair to facilitate primary skin closure. Finally, this study may also fertilize the field of fetal tissue engineering in general, particularly when more interventional, minimally invasive, and open fetal surgical procedures become available.
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Affiliation(s)
- Luca Mazzone
- Department of Pediatric Surgery, University Children's Hospital Zurich, Zurich, Switzerland.,Zurich Center for Fetal Diagnosis and Treatment, Zurich, Switzerland.,Tissue Biology Research Unit, Department of Pediatric Surgery, University Children's Hospital Zurich, Zurich, Switzerland.,Children's Research Center, University Children's Hospital Zurich, Zurich, Switzerland
| | - Ueli Moehrlen
- Department of Pediatric Surgery, University Children's Hospital Zurich, Zurich, Switzerland.,Zurich Center for Fetal Diagnosis and Treatment, Zurich, Switzerland.,Children's Research Center, University Children's Hospital Zurich, Zurich, Switzerland
| | - Nicole Ochsenbein-Kölble
- Zurich Center for Fetal Diagnosis and Treatment, Zurich, Switzerland.,Department of Obstetrics, University Hospital Zurich, Zurich, Switzerland
| | - Luca Pontiggia
- Tissue Biology Research Unit, Department of Pediatric Surgery, University Children's Hospital Zurich, Zurich, Switzerland.,Children's Research Center, University Children's Hospital Zurich, Zurich, Switzerland
| | - Thomas Biedermann
- Tissue Biology Research Unit, Department of Pediatric Surgery, University Children's Hospital Zurich, Zurich, Switzerland.,Children's Research Center, University Children's Hospital Zurich, Zurich, Switzerland
| | - Ernst Reichmann
- Tissue Biology Research Unit, Department of Pediatric Surgery, University Children's Hospital Zurich, Zurich, Switzerland.,Children's Research Center, University Children's Hospital Zurich, Zurich, Switzerland
| | - Martin Meuli
- Department of Pediatric Surgery, University Children's Hospital Zurich, Zurich, Switzerland.,Zurich Center for Fetal Diagnosis and Treatment, Zurich, Switzerland.,Tissue Biology Research Unit, Department of Pediatric Surgery, University Children's Hospital Zurich, Zurich, Switzerland.,Children's Research Center, University Children's Hospital Zurich, Zurich, Switzerland
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Tizek L, Schielein M, Seifert F, Biedermann T, Böhner A, Zink A. Response to ‘Letter to the editor’ by Wienholtz et al. entitled ‘The many faces of rosacea: liberal diagnostic criteria have ramifications on disease prevalence and accuracy’. J Eur Acad Dermatol Venereol 2019; 33:e428. [DOI: 10.1111/jdv.15747] [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] [Received: 05/07/2019] [Accepted: 05/24/2019] [Indexed: 11/29/2022]
Affiliation(s)
- L. Tizek
- Department of Dermatology and Allergy, School of Medicine Technical University of Munich Munich Germany
- Institute for Medical Information Processing, Biometry and Epidemiology (IBE) LMU Munich Munich Germany
| | - M.C. Schielein
- Department of Dermatology and Allergy, School of Medicine Technical University of Munich Munich Germany
- Institute for Medical Information Processing, Biometry and Epidemiology (IBE) LMU Munich Munich Germany
| | | | - T. Biedermann
- Department of Dermatology and Allergy, School of Medicine Technical University of Munich Munich Germany
| | - A. Böhner
- Department of Dermatology and Allergy, School of Medicine Technical University of Munich Munich Germany
| | - A. Zink
- Department of Dermatology and Allergy, School of Medicine Technical University of Munich Munich Germany
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50
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