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Quadri M, Bonetti LR, Panini R, Tiso N, Morasso M, Lotti R, Marconi A, Pincelli C, Palazzo E. 438 CD271 modulates cutaneous squamous cell carcinoma growth and invasion in patient-derived spheroids and zebrafish avatar. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.452] [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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Quadri M, Bonetti LR, Vaschieri C, Lotti R, Campanini L, Canossa M, Morasso M, Pincelli C, Marconi A, Palazzo E. 186 Dissecting the role of the common neurotrophin receptor CD271 in the skin: generation and characterization of a novel mouse model with keratinocyte-specific conditional deletion. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.197] [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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Borradori L, Van Beek N, Feliciani C, Tedbirt B, Antiga E, Bergman R, Böckle BC, Caproni M, Caux F, Chandran NS, Cianchini G, Daneshpazhooh M, De D, Didona D, Di Zenzo GM, Dmochowski M, Drenovska K, Ehrchen J, Goebeler M, Groves R, Günther C, Horvath B, Hertl M, Hofmann S, Ioannides D, Itzlinger-Monshi B, Jedličková J, Kowalewski C, Kridin K, Lim YL, Marinovic B, Marzano AV, Mascaro JM, Meijer JM, Murrell D, Patsatsi K, Pincelli C, Prost C, Rappersberger K, Sárdy M, Setterfield J, Shahid M, Sprecher E, Tasanen K, Uzun S, Vassileva S, Vestergaard K, Vorobyev A, Vujic I, Wang G, Wozniak K, Yayli S, Zambruno G, Zillikens D, Schmidt E, Joly P. Updated S2 K guidelines for the management of bullous pemphigoid initiated by the European Academy of Dermatology and Venereology (EADV). J Eur Acad Dermatol Venereol 2022; 36:1689-1704. [PMID: 35766904 DOI: 10.1111/jdv.18220] [Citation(s) in RCA: 50] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 05/04/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND Bullous pemphigoid (BP) is the most common autoimmune subepidermal blistering disease of the skin and mucous membranes. This disease typically affects the elderly and presents with itch and localized or, most frequently, generalized bullous lesions. A subset of patients only develops excoriations, prurigo-like lesions, and eczematous and/or urticarial erythematous lesions. The disease, which is significantly associated with neurological disorders, has high morbidity and severely impacts the quality of life. OBJECTIVES AND METHODOLOGY The Autoimmune blistering diseases Task Force of the European Academy of Dermatology and Venereology sought to update the guidelines for the management of BP based on new clinical information, and new evidence on diagnostic tools and interventions. The recommendations are either evidence-based or rely on expert opinion. The degree of consent among all task force members was included. RESULTS Treatment depends on the severity of BP and patients' comorbidities. High-potency topical corticosteroids are recommended as the mainstay of treatment whenever possible. Oral prednisone at a dose of 0.5 mg/kg/day is a recommended alternative. In case of contraindications or resistance to corticosteroids, immunosuppressive therapies, such as methotrexate, azathioprine, mycophenolate mofetil or mycophenolate acid, may be recommended. The use of doxycycline and dapsone is controversial. They may be recommended, in particular, in patients with contraindications to oral corticosteroids. B-cell-depleting therapy and intravenous immunoglobulins may be considered in treatment-resistant cases. Omalizumab and dupilumab have recently shown promising results. The final version of the guideline was consented to by several patient organizations. CONCLUSIONS The guidelines for the management of BP were updated. They summarize evidence- and expert-based recommendations useful in clinical practice.
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Affiliation(s)
- L Borradori
- Department of Dermatology, Inselspital, Bern University Hospital, Bern, Switzerland
| | - N Van Beek
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | - C Feliciani
- Dermatology Unit, Department of Medicine and Surgery, University Hospital, University of Parma, Italy
| | - B Tedbirt
- Department of Dermatology, Rouen University Hospital, Referral Center for Autoimmune Bullous Diseases, Referral Center for Autoimmune Bullous Diseases, Rouen University Hospital, INSERM U1234, Normandie University, Rouen, France
| | - E Antiga
- Section of Dermatology, Department of Health Sciences, University of Florence, Florence, Italy
| | - R Bergman
- Department of Dermatology, Rambam Health Care Campus, Haifa, Israel.,Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - B C Böckle
- Department of Dermatology, Venereology & Allergology, Innsbruck Medical University, Innsbruck, Austria
| | - M Caproni
- Department of Health Sciences, Section of Dermatology, AUSL Toscana Centro, Rare Diseases Unit, European Reference Network-Skin Member, University of Florence, Italy
| | - F Caux
- Department of Dermatology and Referral Center for Autoimmune Bullous Diseases, Groupe Hospitalier Paris Seine-Saint-Denis, AP-HP and University Paris 13, Bobigny, France
| | - N S Chandran
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - G Cianchini
- Department of Dermatology, Ospedale Classificato Cristo Re, Rome, Italy
| | - M Daneshpazhooh
- Department of Dermatology, Autoimmune Bullous Diseases Research Center, Razi Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - D De
- Department of Dermatology, Venereology and Leprology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - D Didona
- Department of Dermatology and Allergology, Philipps University, Marburg, Germany
| | - G M Di Zenzo
- Laboratory of Molecular and Cell Biology, Istituto Dermopatico dell'Immacolata, IDI-IRCCS, Rome, Italy
| | - M Dmochowski
- Autoimmune Blistering Dermatoses Section, Department of Dermatology, Poznan University of Medical Sciences, Poznan, Poland
| | - K Drenovska
- Department of Dermatology, Medical University of Sofia, Sofia, Bulgaria
| | - J Ehrchen
- Department of Dermatology, University of Münster, Münster, Germany
| | - M Goebeler
- Department of Dermatology, Venereology and Allergology, University Hospital Würzburg, Würzburg, Germany
| | - R Groves
- St. John's Institute of Dermatology, Viapath Analytics LLP, St. Thomas' Hospital, London, UK.,Division of Genetics and Molecular Medicine, King's College London, Guy's Hospital, London, UK
| | - C Günther
- Department of Dermatology, Carl Gustav Carus University Hospital, Technische Universität Dresden, Dresden, Germany
| | - B Horvath
- Department of Dermatology, Center for Blistering Diseases, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - M Hertl
- Department of Dermatology and Allergology, Philipps University, Marburg, Germany
| | - S Hofmann
- Department of Dermatology, Allergy and Dermatosurgery, Helios University Hospital Wuppertal, University Witten, Herdecke, Germany
| | - D Ioannides
- 1st Department of Dermatology-Venereology, Hospital of Skin and Venereal Diseases, Aristotle University Medical School, Thessaloniki, Greece
| | - B Itzlinger-Monshi
- Department of Dermatology, Venereology and Allergy, Clinical Center Landstrasse, Academic Teaching Hospital of the Medical University of Vienna, Vienna, Austria.,Medical Faculty, The Sigmund Freud Private University, Vienna, Austria
| | - J Jedličková
- Department of Dermatovenereology, Masaryk University, University Hospital St. Anna, Brno.,Department of Dermatovenereology, University Hospital Brno, Brno, Czech Republic
| | - C Kowalewski
- Department Dermatology and Immunodermatology, Medical University of Warsaw, Warsaw, Poland
| | - K Kridin
- National Skin Centre, Singapore, Singapore
| | - Y L Lim
- Department of Dermatology and Venereology, School of Medicine, University Hospital Centre Zagreb, University of Zagreb, Zagreb, Croatia
| | - B Marinovic
- Dermatology Unit, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - A V Marzano
- Dermatology Unit, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy.,Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - J-M Mascaro
- Department of Dermatology, Hospital Clínic de Barcelona, Universitat de Barcelona, Barcelona, Spain
| | - J M Meijer
- Department of Dermatology, Center for Blistering Diseases, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - D Murrell
- Department of Dermatology, St George Hospital, University of New South Wales, Sydney, New South Wales, Australia
| | - K Patsatsi
- 2nd Department of Dermatology, Autoimmune Bullous Diseases Unit, Aristotle University School of Medicine, Papageorgiou General Hospital, Thessaloniki, Greece
| | - C Pincelli
- DermoLab, Institute of Dermatology, University of Modena and Reggio Emilia, Modena, Italy
| | - C Prost
- Department of Dermatology and Referral Center for Autoimmune Bullous Diseases, Groupe Hospitalier Paris Seine-Saint-Denis, AP-HP and University Paris 13, Bobigny, France
| | - K Rappersberger
- Department of Dermatology, Venereology and Allergy, Clinical Center Landstrasse, Academic Teaching Hospital of the Medical University of Vienna, Vienna, Austria.,Medical Faculty, The Sigmund Freud Private University, Vienna, Austria.,Abteilung Dermatologie, Venerologie und Allergologie, Lehrkrankenhaus der Medizinischen Universität Wien, Austria
| | - M Sárdy
- Department of Dermatology and Allergology, Ludwig Maximilian University, Munich, Germany.,Department of Dermatology, Venereology and Dermatooncology, Semmelweis University, Budapest, Hungary
| | - J Setterfield
- Department of Oral Medicine, St John's Institute of Dermatology, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - M Shahid
- Department of Dermatology, Medical University, Sofia, Bulgaria
| | - E Sprecher
- Division of Dermatology, Tel Aviv Sourasky Medical Center and Department of Human Molecular Genetics & Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - K Tasanen
- Department of Dermatology, the PEDEGO Research Unit, University of Oulu and Medical Research Center Oulu, Oulu University Hospital, Oulu, Finland
| | - S Uzun
- Department of Dermatology and Venereology, Akdeniz University Faculty of Medicine, Antalya, Turkey
| | - S Vassileva
- Department of Dermatology, Medical University, Sofia, Bulgaria
| | - K Vestergaard
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| | - A Vorobyev
- Department of Dermatology, University of Lübeck, Lübeck, Germany.,Center for Research on Inflammation of the Skin, University of Lübeck, Lübeck, Germany
| | - I Vujic
- Department of Dermatology, Venereology and Allergy, Clinical Center Landstrasse, Academic Teaching Hospital of the Medical University of Vienna, Vienna, Austria.,Medical Faculty, The Sigmund Freud Private University, Vienna, Austria
| | - G Wang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - K Wozniak
- National Skin Centre, Singapore, Singapore
| | - S Yayli
- Department of Dermatology, School of Medicine, Koç University, Istanbul, Turkey
| | - G Zambruno
- Genetics and Rare Diseases Research Division, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - D Zillikens
- Department of Dermatology, University of Lübeck, Lübeck, Germany.,Center for Research on Inflammation of the Skin, University of Lübeck, Lübeck, Germany
| | - E Schmidt
- Department of Dermatology, University of Lübeck, Lübeck, Germany.,Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany
| | - P Joly
- Department of Dermatology, Rouen University Hospital, Referral Center for Autoimmune Bullous Diseases, Referral Center for Autoimmune Bullous Diseases, Rouen University Hospital, INSERM U1234, Normandie University, Rouen, France
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Lotti R, Marconi A, Hundt J, Hammers C, Zagari F, Camboni M, Bennett B, Ludwig R, Pincelli C. 028 PC111, a monoclonal anti-Fas Ligand antibody, blocks blister formation in human pemphigus. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.08.030] [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: 11/27/2022]
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Quadri M, Baudouin C, Lotti R, Palazzo E, Campanini L, Bernard F, Bellemère G, Pincelli C, Marconi A. 331 Characterisation of interfollicular stem cells and early TA cells during the transition from infant to child skin. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.08.339] [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: 11/25/2022]
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Garbe C, Peris K, Soura E, Forsea AM, Hauschild A, Arenbergerova M, Bylaite M, Del Marmol V, Bataille V, Samimi M, Gandini S, Saiag P, Eigentler TK, Lallas A, Zalaudek I, Lebbe C, Grob JJ, Hoeller C, Robert C, Dréno B, Arenberger P, Kandolf-Sekulovic L, Kaufmann R, Malvehy J, Puig S, Leiter U, Ribero S, Papadavid E, Quaglino P, Bagot M, John SM, Richard MA, Trakatelli M, Salavastru C, Borradori L, Marinovic B, Enk A, Pincelli C, Ioannides D, Paul C, Stratigos AJ. The evolving field of Dermato-oncology and the role of dermatologists: Position Paper of the EADO, EADV and Task Forces, EDF, IDS, EBDV-UEMS and EORTC Cutaneous Lymphoma Task Force. J Eur Acad Dermatol Venereol 2020; 34:2183-2197. [PMID: 32840022 DOI: 10.1111/jdv.16849] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 07/13/2020] [Indexed: 12/17/2022]
Abstract
BACKGROUND The incidence of skin cancers has been increasing steadily over the last decades. Although there have been significant breakthroughs in the management of skin cancers with the introduction of novel diagnostic tools and innovative therapies, skin cancer mortality, morbidity and costs heavily burden the society. OBJECTIVE Members of the European Association of Dermato-Oncology, European Academy of Dermatology and Venereology, International Dermoscopy Society, European Dermatology Forum, European Board of Dermatovenereology of the European Union of Medical Specialists and EORTC Cutaneous Lymphoma Task Force have joined this effort to emphasize the fundamental role that the specialist in Dermatology-Venereology has in the diagnosis and management of different types of skin cancer. We review the role of dermatologists in the prevention, diagnosis, treatment and follow-up of patients with melanoma, non-melanoma skin cancers and cutaneous lymphomas, and discuss approaches to optimize their involvement in effectively addressing the current needs and priorities of dermato-oncology. DISCUSSION Dermatologists play a crucial role in virtually all aspects of skin cancer management including the implementation of primary and secondary prevention, the formation of standardized pathways of care for patients, the establishment of specialized skin cancer treatment centres, the coordination of an efficient multidisciplinary team and the setting up of specific follow-up plans for patients. CONCLUSION Skin cancers represent an important health issue for modern societies. The role of dermatologists is central to improving patient care and outcomes. In view of the emerging diagnostic methods and treatments for early and advanced skin cancer, and considering the increasingly diverse skills, knowledge and expertise needed for managing this heterogeneous group of diseases, dermato-oncology should be considered as a specific subspecialty of Dermatology-Venereology.
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Affiliation(s)
- C Garbe
- Center for Dermato-oncology, Department of Dermatology, Eberhard Karls University of Tuebingen, Tuebingen, Germany
| | - K Peris
- Dermatologia, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.,Dermatologia, Università Cattolica del Sacro Cuore, Rome, Italy
| | - E Soura
- 1st Department of Dermatology-Venereology, Andreas Sygros Hospital, National and Kapodestrian University of Athens, Athens, Greece
| | - A M Forsea
- Department of Oncologic Dermatology, University Hospital Elias, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | - A Hauschild
- Department of Dermatology, University of Kiel, Kiel, Germany
| | - M Arenbergerova
- Department of Dermatovenereology, Third Faculty of Medicine, Charles University, University Hospital of Kralovske Vinohrady, Prague, Czech Republic
| | - M Bylaite
- Faculty of Medicine, Centre of Dermatovenereology, Clinic of Infectious Diseases and Dermatovenereology, Vilnius University, Vilnius, Lithuania
| | - V Del Marmol
- Dermatology Department, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - V Bataille
- Dermatology Department, West Herts NHS Trust, London, UK.,Twin Research and Genetic Epidemiology Department, Kings College London, London, UK
| | - M Samimi
- Departments of Dermatology, University Hospital of Tours, Tours, France
| | - S Gandini
- Molecular and Pharmaco-Epidemiology Unit, Department of Experimental Oncology, IEO, European Institute of Oncology IRCCS, Milan, Italy
| | - P Saiag
- Department of General and Oncologic Dermatology, Ambroise-Paré Hospital, APHP, & EA 4340, 'Biomarkers in Cancerology and Hemato-Oncology', UVSQ, Université Paris-Saclay, Boulogne-Billancourt, France
| | - T K Eigentler
- Departments of Dermatology, University Hospital Tübingen, Tubingen, Germany
| | - A Lallas
- First Dermatology Department, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - I Zalaudek
- Department of Dermatology, University of Trieste, Trieste, Italy
| | - C Lebbe
- Department of Dermatology, AP-HP Saint Louis Hospital, Paris, France
| | - J-J Grob
- Timone Hospital, Aix-Marseille University, Marseille, France
| | - C Hoeller
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - C Robert
- Department of Cancer Medicine, Gustave Roussy Cancer Campus, Villejuif, France.,Paris-Saclay University, Le Kremlin Bicêtre, France
| | - B Dréno
- Department of Dermatolo-Cancerology, CHU Nantes, CIC 1413, CRCINA, University Nantes, Nantes, France
| | - P Arenberger
- Department of Dermatovenereology, Third Faculty of Medicine, Charles University, University Hospital of Kralovske Vinohrady, Prague, Czech Republic
| | - L Kandolf-Sekulovic
- Department of Dermatology, Faculty of Medicine, Military Medical Academy, University of Defense, Belgrade, Serbia
| | - R Kaufmann
- Department of Dermatology, Venerology and Allergology, University Hospital Frankfurt, Frankfurt am Main, Germany
| | - J Malvehy
- Dermatology Department, Hospital Clinic of Barcelona, University of Barcelona, Spain.,Institut d'Investigacions Biomédiques August Pi i Sunyer (IDIBAPS), Biomedical Research Networking Centre on rarae disease (CIBERER), ISCIII, Barcelona, Spain
| | - S Puig
- Dermatology Department, Hospital Clinic of Barcelona, University of Barcelona, Spain.,Institut d'Investigacions Biomédiques August Pi i Sunyer (IDIBAPS), Biomedical Research Networking Centre on rarae disease (CIBERER), ISCIII, Barcelona, Spain
| | - U Leiter
- Center for Dermato-oncology, Department of Dermatology, Eberhard Karls University of Tuebingen, Tuebingen, Germany
| | - S Ribero
- Dermatology Clinic, Department of Medical Sciences, University of Turin, Turin, Italy
| | - E Papadavid
- 2nd Department of Dermatology-Venereology, ATTIKON Hospital, National and Kapodistrian Univeristy of Athens, Athens, Greece
| | - P Quaglino
- Dermatology Clinic, Department of Medical Sciences, University of Turin, Turin, Italy
| | - M Bagot
- Department of Dermatology, AP-HP Saint Louis Hospital, Paris, France
| | - S M John
- Department Dermatology, Environmental Medicine, Health Theory, University of Osnabrueck, Osnabrueck, Germany
| | - M-A Richard
- Timone Hospital, Aix-Marseille University, Marseille, France
| | - M Trakatelli
- 2nd Department of Dermatology-Venerology, Papageorgiou Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - C Salavastru
- Pediatric Dermatology Discipline, Dermato-oncology Research Facility, Colentina Clinical Hospital, Bucharest, Romania
| | - L Borradori
- Department of Dermatology, University Hospital of Bern, Inselspital, Bern, Switzerland
| | - B Marinovic
- Department of Dermatology and Venereology, University Hospital Center Zagreb, School of Medicine University of Zagreb, Zagreb, Croatia
| | - A Enk
- Department of Dermatology, University Hospital of Heidelberg, Heidelberg, Germany
| | - C Pincelli
- DermoLab, Dermatology, University of Modena and Reggio Emilia, Modena, Italy
| | - D Ioannides
- First Dermatology Department, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - C Paul
- Department of Dermatology, Toulouse University, Toulouse, France
| | - A J Stratigos
- 1st Department of Dermatology-Venereology, Andreas Sygros Hospital, National and Kapodestrian University of Athens, Athens, Greece
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Joly P, Horvath B, Patsatsi Α, Uzun S, Bech R, Beissert S, Bergman R, Bernard P, Borradori L, Caproni M, Caux F, Cianchini G, Daneshpazhooh M, De D, Dmochowski M, Drenovska K, Ehrchen J, Feliciani C, Goebeler M, Groves R, Guenther C, Hofmann S, Ioannides D, Kowalewski C, Ludwig R, Lim Y, Marinovic B, Marzano A, Mascaró J, Mimouni D, Murrell D, Pincelli C, Squarcioni C, Sárdy M, Setterfield J, Sprecher E, Vassileva S, Wozniak K, Yayli S, Zambruno G, Zillikens D, Hertl M, Schmidt E. Updated S2K guidelines on the management of pemphigus vulgaris and foliaceus initiated by the european academy of dermatology and venereology (EADV). J Eur Acad Dermatol Venereol 2020; 34:1900-1913. [DOI: 10.1111/jdv.16752] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 05/29/2020] [Indexed: 01/21/2023]
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Pincelli C, Quadri M, Lotti R, Palazzo E, Marconi A. 1088 Efficacy of AD-DER emollient in an in vitro atopic dermatitis model. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.1101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Marconi A, Quadri M, Lotti R, Palazzo E, Farnetani F, Pincelli C, Pellacani G. 1211 Bio-molecular profile of melanoma subtypes selected by reflectance confocal microscopy. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.1226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Lotti R, Atene C, Palazzo E, Quadri M, Marconi A, Zanocco-Marani T, Pincelli C. 049 Development of active mouse models to recapitulate pemphigus subtypes and to evaluate response to therapy. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Quadri M, Marconi A, Francesca T, Lotti R, Palazzo E, Farnetani F, Pincelli C, Pellacani G. 585 Aggressiveness of melanoma subtypes selected by reflectance confocal microscopy. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.07.782] [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: 11/28/2022]
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Quadri M, Saltari A, Truzzi F, Lotti R, Palazzo E, Tiso N, Marconi A, Pincelli C. 457 The lack of CD271 favors melanoma metastasis in zebrafish and is associated with a reduced cell-cell adhesion. J Invest Dermatol 2016. [DOI: 10.1016/j.jid.2016.06.479] [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: 11/26/2022]
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Marconi A, Truzzi F, Saltari A, Lotti R, Palazzo E, Quadri M, Schafer P, Pincelli C. 142 CD271 regulates human keratinocyte functions through Phosphodiesterase 4 binding. J Invest Dermatol 2016. [DOI: 10.1016/j.jid.2016.06.160] [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: 11/26/2022]
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Cavazza A, Cocchiarella F, Bartholomae C, Schmidt M, Pincelli C, Larcher F, Mavilio F. Self-inactivating MLV vectors have a reduced genotoxic profile in human epidermal keratinocytes. Gene Ther 2013; 20:949-57. [PMID: 23615186 DOI: 10.1038/gt.2013.18] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Revised: 03/18/2013] [Accepted: 03/25/2013] [Indexed: 02/07/2023]
Abstract
Transplantation of epithelia derived from keratinocyte stem cells transduced by retroviral vectors is a potential therapy for epidermolysis bullosa (EB), a family of inherited skin adhesion defects. The biosafety characteristics of retroviral vectors in keratinocytes are, however, poorly defined. We developed self-inactivating (SIN) vectors derived from the Moloney murine leukemia (MLV) and the human immunodeficiency (HIV) viruses expressing therapeutic levels of LAMB3, a transgene defective in junctional EB, and tested their integration profile in human primary keratinocytes. The SIN-HIV vector showed the expected preference for transcribed genes while the SIN-MLV vector integrated preferentially in regulatory elements, but showed a significantly lower tendency to target cell growth-related genes, transcription start sites and epigenetically defined promoters compared with a wild-type MLV vector in an epithelial cell context. A quantitative gene expression assay in individual keratinocyte clones showed that MLV-derived vectors deregulate expression of targeted genes at a lower frequency than in hematopoietic cells, and that the SIN-MLV design has the lowest activity compared to both MLV and SIN-HIV vectors. This study indicates that SIN-MLV vectors may have a better safety profile in keratinocyte than in hematopoietic cells, and be a reasonable alternative to lentiviral vectors for gene therapy of inherited skin disorders.
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Affiliation(s)
- A Cavazza
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
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15
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Pincelli C. Nerve growth factor and its role in epidermal homeostasis. Exp Dermatol 2008. [DOI: 10.1111/j.0906-6705.2004.0212ah.x] [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: 11/29/2022]
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16
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17
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Peters EMJ, Raap U, Welker P, Tanaka A, Matsuda H, Pavlovic-Masnicosa S, Hendrix S, Pincelli C. Neurotrophins act as neuroendocrine regulators of skin homeostasis in health and disease. Horm Metab Res 2007; 39:110-24. [PMID: 17326007 DOI: 10.1055/s-2007-961812] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Neurotrophins regulate cutaneous innervation, act as growth and motility factors on structural skin cells such as keratinocytes and fibroblasts, modulate cutaneous immune function and even serve as stress mediators in skin biology. The multilayered neurotrophin interaction with skin biology through high affinity specific tyrosinekinase receptors and the Janus-faced p75 receptor, which depending on ligand and co-receptor expression can serve as a low-affinity pan-neurotrophin receptor or a high affinity proneurotrophin receptor, guaranties this neuroendocrine peptide family a central position in the control of skin homeostasis in health and disease. It is a challenging task for future research efforts to integrate our knowledge on differential neurotrophin expression patterns and signaling pathways into complex concepts of neuroendocrine tissue remodeling and pathogenetic processes. In addition, we need to improve our understanding of the role of neurotrophin processing enzymes, associated co-receptors and intracellular adaptor molecules in specific cutaneous cell populations to design precise interaction tools for research and treatment. Such tools will allow us to utilize this ancient growth factor family in the management of neurotrophin responsive pathogenetic pathways and cutaneous diseases such as neurogenic inflammation, peripheral nerve degeneration, wound healing, atopic dermatitis or psoriasis.
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Affiliation(s)
- E M J Peters
- Cutaneous Psychoneuroimmunology, Internal Medicine - Psychosomatics, Charité - Universitätsmedizin Berlin, Berlin, Germany.
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18
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Abstract
The skin is the most densely innervated organ in the body and there is a close relationship between the skin and the nervous system. Most skin cells express receptors for neuromediators (NM) and skin cells themselves are an important source of NM. In particular, human keratinocytes synthesize neurotrophins and endorphins and express their receptors. In addition to neurotrophic activity, NM are involved in skin homeostasis, trophism and stress responses. NM released from keratinocytes also function in a paracrine fashion on other skin cells, such as Langerhans cells, melanocytes and fibroblasts. We discuss the influence of NM on these cells, which may be involved in major cosmetic problems like ageing, baldness and dyspigmentation. Based on this correlation, it seems reasonable to target neural factors for cosmetic purposes.
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Affiliation(s)
- C Pincelli
- Department of Internal Medicine, Section of Dermatology, University of Modena and Reggio Emilia, Modena, Italy.
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Amagai M, Ahmed AR, Kitajima Y, Bystryn JC, Milner Y, Gniadecki R, Hertl M, Pincelli C, Kurzen H, Fridkis-Hareli M, Aoyama Y, Frusić-Zlotkin M, Müller E, David M, Mimouni D, Vind-Kezunovic D, Michel B, Mahoney M, Grando S. Are desmoglein autoantibodies essential for the immunopathogenesis of pemphigus vulgaris, or just ‘witnesses of disease'? Exp Dermatol 2006; 15:815-31. [PMID: 16984264 DOI: 10.1111/j.1600-0625.2006.00499_1.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Pemphigus vulgaris (PV) is fascinating to dermatologists, epithelial biologists and immunologists alike, as its pathogenesis has been clarified to a much greater extent than that of most other organ-specific autoimmune diseases, and as it has provided abundant novel insights into desmoglein biology and pathology along the way. Historically, the most influential PV pathogenesis concept is that of Stanley and Amagai. This concept holds that autoantibodies against desmogleins are both essential and sufficient for epidermal blister formation (acantholysis) by impeding the normal functioning of these major adhesion proteins. However, as with most good theories, this landmark concept has left a number of intriguing and important questions open (or at least has not managed to answer these to everyone's satisfaction). Moreover, selected dissenting voices in the literature have increasingly called attention to what may or may not be construed as inconsistencies in this dominant PV pathogenesis paradigm of the recent past. The present debate feature therefore bravely rises to the challenge of re-examining the entire currently available evidence, as rationally and as undogmatically as possible, by provocatively asking a carefully selected congregation of experts (who have never before jointly published on this controversial topic!) to discuss how essential anti-desmoglein autoantibodies really are in the immunopathogenesis of PV. Not surprisingly, some of our expert "witnesses" in this animated debate propose diametrically opposed answers to this question. While doing so, incisive additional questions are raised that relate to the central one posed, and our attention is called to facts that may deserve more careful consideration than they have received so far. Together with the intriguing (often still very speculative) complementary or alternative pathogenesis scenarios proposed in the following pages, this offers welcome "food for thought" as well as very specific suggestions for important future research directions--within and beyond the camp of PV aficionados. The editors trust that this attempt at a rational public debate of the full evidence that is currently at hand will constructively contribute to further dissecting the exciting--and clinically very relevant!--immunopathogenesis of PV in all its complexity.
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Paus R, Amagai M, Ahmed AR, Kitajima Y, Bystryn JC, Milner Y, Gniadecki R, Hertl M, Pincelli C, Fridkis-Hareli M, Aoyama Y, Frušić-Zlotkin M, Müller E, David M, Mimouni D, Vind-Kezunovic D, Michel B, Mahoney M, Grando S. Are desmoglein autoantibodies essential for the immunopathogenesis of pemphigus vulgaris, or just ‘witnesses of disease'? Exp Dermatol 2006. [DOI: 10.1111/j.1600-0625.2006.00499.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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21
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Marconi A, Panza MC, Bonnet-Duquennoy M, Lazou K, Kurfurst R, Truzzi F, Lotti R, De Santis G, Dumas M, Bonte F, Pincelli C. Expression and function of neurotrophins and their receptors in human melanocytes. Int J Cosmet Sci 2006; 28:255-61. [DOI: 10.1111/j.1467-2494.2006.00321.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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22
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Marconi A, Terracina M, Fila C, Franchi J, Bonté F, Romagnoli G, Maurelli R, Failla CM, Dumas M, Pincelli C. Expression and function of neurotrophins and their receptors in cultured human keratinocytes. J Invest Dermatol 2004; 121:1515-21. [PMID: 14675204 DOI: 10.1111/j.1523-1747.2003.12624.x] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Whereas nerve growth factor has been extensively studied in human keratinocytes, little is known on the role of other members of the neurotrophin family. We investigated the expression and function of neurotrophins and neurotrophin receptors in cultured human keratinocytes. We demonstrated by reverse transcription-polymerase chain reaction that keratinocytes synthesize neurotrophin-3, brain-derived neurotrophic factor, and neurotrophin-4/5. These cells also express tyrosinase kinase A and C, the nerve growth factor and neuro-trophin-3 high-affinity receptors, respectively. On the other hand, only the truncated extracellular isoform of tyrosinase kinase B, the high-affinity brain-derived neurotrophic factor and neurotrophin-4/5 receptor, is detected in keratinocytes. Moreover, neurotrophin-3, brain-derived neurotrophic factor, and neurotrophin-4/5 proteins are secreted by human keratinocytes at low levels. Keratinocyte stem cells synthesize the highest amounts of nerve growth factor, while they secrete higher levels of nerve growth factor as compared with transit amplifying cells. Neurotrophin-3 stimulates keratinocyte proliferation, where brain-derived neurotrophic factor or neurotrophin-4/5 does not exert any effect on keratinocyte proliferation. Addition of neurotrophin-3 slightly upregulates the secretion of nerve growth factor, whereas nerve growth factor strongly augments neurotrophin-3 release. Ultraviolet B irradiation downregulates nerve growth factor, whereas it augments neurotrophin-3 and neurotrophin-4/5 protein levels. Ultraviolet A irradiation increases the level of neurotrophin-3, whereas it does not exert any effect on the other neurotrophins. Finally, neurotrophins other than nerve growth factor fail to protect human keratinocytes from ultraviolet B-induced apoptosis. This work delineates a functional neurotrophin network, which may contribute to epidermal homeostasis.
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Affiliation(s)
- A Marconi
- Institute of Dermatology, University of Modena and Reggio Emilia, Modena, Italy
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23
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Monti D, Moretti L, Salvioli S, Straface E, Malorni W, Pellicciari R, Schettini G, Bisaglia M, Pincelli C, Fumelli C, Bonafè M, Franceschi C. C60 carboxyfullerene exerts a protective activity against oxidative stress-induced apoptosis in human peripheral blood mononuclear cells. Biochem Biophys Res Commun 2000; 277:711-7. [PMID: 11062018 DOI: 10.1006/bbrc.2000.3715] [Citation(s) in RCA: 82] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
C60 carboxyfullerene is a novel buckminsterfullerene-derived compound that behaves as a free-radical scavenger. In the present report, we investigated whether this drug exerts a protective activity against oxidative stress-induced apoptosis. Human peripheral blood mononuclear cells (PBMCs) were challenged by 2-deoxy-d-ribose (dRib) or TNF-alpha plus cycloheximide as agents that trigger apoptosis by interfering with the redox status of cell and mitochondrial membrane potential. We found that carboxyfullerene was able to protect quiescent PBMCs from apoptosis caused either by 2-deoxy-d-ribose or TNF-alpha plus cycloheximide by a mechanism partially involving the mitochondrial membrane potential integrity, known to be associated with early stages of apoptosis. These results represent the first indication for a target activity of buckminsterfullerenes on cells of the immune system and their mitochondria.
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Affiliation(s)
- D Monti
- Department of Experimental Pathology and Oncology, University of Florence, Florence, Italy.
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24
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Fumelli C, Marconi A, Salvioli S, Straface E, Malorni W, Offidani AM, Pellicciari R, Schettini G, Giannetti A, Monti D, Franceschi C, Pincelli C. Carboxyfullerenes protect human keratinocytes from ultraviolet-B-induced apoptosis. J Invest Dermatol 2000; 115:835-41. [PMID: 11069621 DOI: 10.1046/j.1523-1747.2000.00140.x] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Carboxyfullerene, a water-soluble carboxylic acid derivative of a fullerene, which acts as a free-radical scavenger, was investigated as a protective agent against ultraviolet-light-induced damage in human keratinocytes. First, we demonstrate that carboxyfullerene is not cytotoxic for these cells. In addition, this compound significantly reduces the ultraviolet-B-induced inhibition of keratinocyte proliferation and protects keratinocytes from apoptosis caused by ultraviolet B irradiation in a time- and dose-dependent fashion. Furthermore, the percentage of cells with depolarized mitochondria is significantly lower in ultraviolet-B-irradiated keratinocytes pretreated with carboxyfullerene than in cells provided with diluent alone. Carboxyfullerene also protects human keratinocytes from apoptosis induced by exposure to deoxy-D-ribose, a sugar that causes cell death through a pathway involving oxidative stress. On the other hand, ultraviolet B downregulates bcl-2 levels in human keratinocytes, and carboxyfullerene fails to prevent this effect. These results suggest that carboxy- fullerene protects human keratinocytes from ultraviolet B damage possibly via a mechanism interfering with the generation of reactive oxygen species from depolarized mitochondria without the involvement of bcl-2.
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Affiliation(s)
- C Fumelli
- Department of Neuropsychosensorial Pathology, Section of Dermatology, University of Modena and Reggio Emilia, Italy
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25
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Pincelli C. Nerve growth factor and keratinocytes: a role in psoriasis. Eur J Dermatol 2000; 10:85-90. [PMID: 10694304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
Nerve growth factor (NGF) is synthesized and released by human keratinocytes. NGF acts as a neurotrophic molecule at the skin level, as it stimulates the sprouting of nerve fibers and regulates the synthesis and expression of neuropeptides. NGF can thus take part in neurogenic inflammation which in turn is involved in the pathogenesis of several inflammatory dermatoses. Human keratinocytes also synthesize and express the low (p75)-and the high-affinity (trk) NGF-receptor (NGF-R). NGF stimulates keratinocyte proliferation which is blocked by the natural alcaloid K252, a specific inhibitor of trk phosphorylation. K252 inhibits keratinocyte proliferation and induces keratinocyte apoptosis, in the absence of exogenous NGF, indicating the existence of an autocrine loop where NGF and trk act as key players. Finally, NGF protein levels are increased in psoriatic as compared to non-lesional and normal skin, and psoriatic keratinocytes express higher amounts of NGF than normal keratinocytes. This review will discuss the above findings in view of a possible involvement of NGF in the pathomechanisms associated with the development of the psoriatic lesion.
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Affiliation(s)
- C Pincelli
- Department of Neuropsychosensorial Pathology, Section of Dermatology, University of Modena and Reggio Emilia, Via del Porro 71, 41100 Modena, Italy.
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26
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Abstract
Biologically active nerve growth factor (NGF) is synthesised and released by proliferating normal human keratinocytes. NGF up-regulates the expression of NGF mRNA in keratinocytes. Keratinocytes express both the low (p75)- and the high-affinity (TrkA) NGF-receptors, which are located in the basal layer of the epidermis. K252, a specific inhibitor of trk phosphorylation, blocks NGF-induced keratinocyte proliferation, in absence of exogenous NGF. Normal keratinocytes over-expressing TrkA proliferate better than control transfectants, while the NGF mimicking anti-Trk antibody induces an increased keratinocyte proliferation in Trk over-expressing cells as compared to mock transfected keratinocytes. In addition, NGF over-expressing keratinocytes proliferate better than mock transfected cells. K252, by blocking TrkA phosphorylation, induces apoptosis in normal keratinocytes, but not in keratinocytes over-expressing bcl-2. Furthermore, NGF transfected keratinocytes are protected from UV-B-induced keratinocyte apoptosis, by maintaining constant levels of Bcl-2 and Bcl-xL . Taken together these results support the concept of an autocrine survival system sustained by NGF and its high-affinity receptor in human keratinocytes. Because NGF and Trk levels are highly expressed in psoriasis. one could speculate that NGF autocrine system plays a role in the mechanisms associated with this and other hyperproliferative skin conditions, including cancer.
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Affiliation(s)
- C Pincelli
- Department of Neuropsychosensorial Pathology, University of Modena and Reggio Emilia, Italy.
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27
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Abstract
Ultraviolet radiation is a potent inducer of apoptosis, whereas autocrine nerve growth factor protects human keratinocytes from programmed cell death. To evaluate the role of nerve growth factor in the mechanisms of ultraviolet B-induced apoptosis, cultured human keratinocytes were ultraviolet B irradiated following pretreatment with K252, a specific inhibitor of the tyrosine kinase high-affinity nerve growth factor receptor. Here we report that the addition of K252 significantly enhanced keratinocyte apoptosis. We then transfected normal human keratinocytes with pNUT-hNGF. Nerve growth factor overexpressing keratinocytes secreted the highest amounts of nerve growth factor in culture supernatants, were more viable, and had a higher rate of proliferation than mock-transfected cells. Whereas ultraviolet B radiation downregulated nerve growth factor mRNA and protein as well as the tyrosine kinase high-affinity nerve growth factor receptor in normal keratinocytes, it failed to do so in nerve growth factor-transfected cells. Moreover, nerve growth factor overexpressing keratinocytes were partially resistant to apoptosis induced by increasing doses of ultraviolet B at 24 and 48 h. These results indicate that downregulation of nerve growth factor function plays an important part in the mechanisms of ultraviolet B-induced apoptosis in human keratinocytes. In addition, ultraviolet B caused a decrease in BCL-2 and BCL-xL expression in mock-transfected keratinocytes, but not in nerve growth factor overexpressing cells. Finally, nerve growth factor prevented the cleavage of the enzyme poly(ADP-ribose) polymerase induced in human keratinocytes by ultraviolet B. These results are consistent with a model whereby the autocrine nerve growth factor protects human keratinocytes from ultraviolet B-induced apoptosis by maintaining constant levels of BCL-2 and BCL-xL, which in turn might block caspase activation.
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Affiliation(s)
- A Marconi
- Department of Neuropsychosensorial Pathology, Section of Dermatology, University of Modena and Reggion Emilia, Modena, Italy
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28
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Chiodino C, Cesinaro AM, Ottani D, Fantini F, Giannetti A, Trentini GP, Pincelli C. Communication: expression of the novel inhibitor of apoptosis survivin in normal and neoplastic skin. J Invest Dermatol 1999; 113:415-8. [PMID: 10469343 DOI: 10.1046/j.1523-1747.1999.00711.x] [Citation(s) in RCA: 91] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Apoptosis plays a fundamental part in epidermal homeostasis, and apoptotic cells have been detected in normal and diseased skin. Little is known, however, on the inhibitory mechanisms of apoptosis at the skin level. In addition to bcl-2, a novel inhibitor of apoptosis designated survivin and structurally analogous to IAP apoptosis inhibitors has been recently identified. The expression of survivin in normal and pathologic skin was investigated. Immunohistochemical studies revealed that survivin is expressed in basal keratinocytes, but not in suprabasal epidermal layers, with a pattern similar to bcl-2. In western blots, the anti-survivin antibody recognized a single band of 16.5 kDa in protein extracts from normal human keratinocytes in culture, in agreement with the predicted size of survivin. In addition, survivin immunoreactivity was detected in benign and malignant melanocytic lesions, with strong expression in invasive lesions of melanomas. Whereas survivin staining was undetectable in benign epithelial tumors, such as seborrheic keratoses, it was observed in all epidermal layers in Bowen's disease. Interestingly, at variance with bcl-2, survivin was markedly expressed in squamous cell carcinoma, but virtually lacking in basal cell carcinoma, suggesting that these two apoptosis inhibitors may act through different anti-apoptotic pathways. Deregulation of survivin may influence both epidermal homeostasis and the development of melanoma and nonmelanoma skin cancer.
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Affiliation(s)
- C Chiodino
- Department of Neuropsychosensorial Pathology, Section of Dermatology, University of Modena and Reggio Emilia, Modena, Italy
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29
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Straface E, Natalini B, Monti D, Franceschi C, Schettini G, Bisaglia M, Fumelli C, Pincelli C, Pellicciari R, Malorni W. C3-fullero-tris-methanodicarboxylic acid protects epithelial cells from radiation-induced anoikia by influencing cell adhesion ability. FEBS Lett 1999; 454:335-40. [PMID: 10431834 DOI: 10.1016/s0014-5793(99)00812-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Anoikia is a type of apoptotic cell death that occurs in cells that are substrate-restricted in their growth. Buckminsterfullerenes represent a new class of chemical compounds with wide potential pharmacological antioxidant activity. In this report we provide the first demonstration that a water-soluble fullerene derivative, C3-fullero-tris-methanodicarboxylic acid, synthesized in our laboratories, is capable of inducing anoikia resistance in epithelial cells by a mechanism involving a 'trophic' effect on cell spreading-associated cytoskeletal components, i.e. on actin microfilaments.
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Affiliation(s)
- E Straface
- Department of Ultrastructures, Istituto Superiore di Sanità, Rome, Italy
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Folgaresi M, Ferdani G, Coppini M, Pincelli C. Primary cutaneous nocardiosis. Eur J Dermatol 1998; 8:430-1. [PMID: 9729051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A 37-year-old patient with systemic lupus erythematosus, who had been treated with oral corticosteroids for 10 years, developed primary cutaneous nocardiosis. Brown-violaceous, suppurative nodules and plaques arose on her right leg. Cultures of multiple biopsies on blood agar medium grew Nocardia. The patient received 500 mg of imipenem three times a day which resulted in complete regression of the lesions within two months. No relapse was observed 6 months later.
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Affiliation(s)
- M Folgaresi
- Department of Dermatology, University of Modena, Via del Pozzo 71, 41100, Modena, Italy
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31
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Di Nardo A, Benassi L, Magnoni C, Pincelli C, Giannetti A. C2-ceramide triggers a BCL-2 mediated apoptosis in normal human keratinocytes. J Dermatol Sci 1998. [DOI: 10.1016/s0923-1811(98)83444-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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32
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Pincelli C, Haake AR, Benassi L, Grassilli E, Magnoni C, Ottani D, Polakowska R, Franceschi C, Giannetti A. Autocrine nerve growth factor protects human keratinocytes from apoptosis through its high affinity receptor (TRK): a role for BCL-2. J Invest Dermatol 1997; 109:757-64. [PMID: 9406817 DOI: 10.1111/1523-1747.ep12340768] [Citation(s) in RCA: 85] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Normal human keratinocytes synthesize and release nerve growth factor (NGF) and express both the low- and the high-affinity NGF receptor. Because NGF has been shown to rescue certain cell types from programmed cell death, we investigated the role of endogenous NGF in preventing keratinocyte apoptosis. We report here that apoptosis is induced in normal human keratinocytes in culture by blocking endogenous NGF signaling with either anti-NGF neutralizing antibody or K252, a specific inhibitor of the tyrosine kinase high-affinity NGF receptor. Apoptosis was assessed by DNA laddering, electron microscopy, and in situ nick end labeling technique. In anti-NGF-treated keratinocytes, the apoptotic process starts at 96 h, and is maximal at 120 h. After K252 treatment, apoptosis starts at 48 h and peaks at 120 h. Because the product of the bcl-2 proto-oncogene protects many cell types from apoptosis, we measured the levels of this protein in apoptotic keratinocytes. We found that both K252 and anti-NGF antibody strikingly downregulate bcl-2 expression, starting at 72 h. Furthermore, HaCat keratinocytes stably transfected with a plasmid containing bcl-2 cDNA fail to undergo apoptosis when treated with K252. These findings show that autocrine NGF acts as a survival factor for human keratinocytes in vitro through its high-affinity NGF receptor, possibly by maintaining constant levels of Bcl-2.
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Affiliation(s)
- C Pincelli
- Department of Dermatology, University of Modena, Italy
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33
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Benassi L, Ottani D, Fantini F, Marconi A, Chiodino C, Giannetti A, Pincelli C. 1,25-dihydroxyvitamin D3, transforming growth factor beta1, calcium, and ultraviolet B radiation induce apoptosis in cultured human keratinocytes. J Invest Dermatol 1997; 109:276-82. [PMID: 9284090 DOI: 10.1111/1523-1747.ep12335756] [Citation(s) in RCA: 68] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Apoptosis is a cellular process of self-directed suicide that plays a key role during morphogenesis and in the maintenance of homeostasis in continuously renewing tissues. Currently, apoptosis is detected mainly by gel electrophoresis of fragmented DNA and by typical ultrastructural features such as cell shrinkage and chromatin condensation. Recently, an in situ technique was developed that allows the detection of the apoptotic process in cells and the quantitation of apoptosis in cell populations. We applied this technique to evaluate the apoptotic process in cultured normal human keratinocytes under basic conditions and after stimulation with factors and agents that are presumed but have never been proved to induce apoptosis in these cells. Apoptosis was analyzed after stimulation with 1,25-dihydroxyvitamin D3 [1,25(OH)2D3], transforming growth factor beta1 (TGFbeta1), calcium, UVB, or tumor necrosis factor alpha (TNFalpha). All these factors except TNFalpha induced apoptosis in human keratinocytes. Whereas UVB and calcium were good apoptogenic stimuli at 6 and 24 h, respectively, the vitamin D derivative and TGFbeta1 induced apoptosis after 5 and 6 d in culture. Apoptosis was also established by DNA fragmentation and electron microscopy. Finally, TUNEL technique showed that the number of apoptotic cells increases slightly (5-10%) from 24 to 144 h even in untreated keratinocytes. Our studies indicate that factors normally involved in the regulation of cell growth and differentiation can also control apoptosis.
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Affiliation(s)
- L Benassi
- Department of Dermatology, University of Modena, Italy
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Abstract
Work in the past 10 y has greatly expanded our knowledge regarding the role of neurotrophins and, in particular, nerve growth factor, in skin. During fetal development, neurotrophins are expressed both in the mesenchyme and the epithelium of developing skin, and they play a trophic role supporting the survival of innervating neurons. Nerve growth factor appears to have an important role also in the adult organism. It serves as a regulatory molecule during skin inflammation and repair, affecting both the neuronal and the immune systems. Recent studies also suggest that nerve growth factor is an important autrocrine growth factor and survival factor for keratinocytes, cells that express both high- and low-affinity receptors for nerve growth factor. Neural crest-derived melanocytes also express receptors for nerve growth factor. Nerve growth factor appears to have a major role during skin injury, e.g., preventing melanocyte apoptotic cell death following UV irradiation. Thus, epidermal events interact to maintain the number and function of both melanocytes and keratinocytes in skin. These recent insights into the mechanisms underlying nerve growth factor effects in skin may eventually result in the development of novel therapeutic modalities.
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Affiliation(s)
- C Pincelli
- Department of Dermatology, University of Modena, Italy
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35
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Pincelli C, Fantini F, Giannetti A. Neuropeptides, nerve growth factor and the skin. Pathol Biol (Paris) 1996; 44:856-9. [PMID: 9157364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Cutaneous nerve fibers can modulate inflammatory reactions through local release of neuro-peptides (NP). In fact, NP are able to regulate both acute and chronic aspects of cutaneous inflammatory processes, such as vascular motility, cellular traffic-king, activation and trophism. Several experimental evidences suggest a participation of NP to the pathogenesis of inflammatory dermatoses: in particular, modulation of inflammatory reactions in the skin can be obtained through pharmacologic manipulation of the neuropeptidergic system. Furthermore, evidence of local alterations of NP levels in inflamed skin has been obtained. It has been hypothesized that the inflammatory process induces reactive changes in the neuronal NP content. The primary candidate as mediator of this neuronal recruitment in the course of inflammatory reactions is the neurotrophin nerve growth factor, that is produced in the skin in increased amounts during inflammatory processes and may regulate peptidergic synthesis at a neuronal level.
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Affiliation(s)
- C Pincelli
- Department of Dermatology, University of Modena, Italy
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36
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Fantini F, Giannetti A, Benassi L, Cattaneo V, Magnoni C, Pincelli C. Nerve growth factor receptor and neurochemical markers in human oral mucosa: an immunohistochemical study. Dermatology 1995; 190:186-91. [PMID: 7541261 DOI: 10.1159/000246682] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND The innervation of the oral mucosa has so far been studied mainly by histochemical and ultrastructural techniques. Only few studies have investigated the presence of neural proteins and neurotransmitters in human gingival mucosa. OBJECTIVE The purpose of the present study was to evaluate the presence and distribution of neural structural and transmitter proteins in different areas of normal human oral mucosa. METHOD Indirect immunofluorescence was employed on specimens taken from different mucosal regions (gingiva, lips, gums, palate). Both structural (low-affinity nerve growth factor receptor, NGFr; protein gene product 9.5, PGP 9.5) and neuropeptide markers (substance P; calcitonin gene-related peptide; vasoactive intestinal peptide, neuropeptide Y) were used. RESULTS NGFr and PGP 9.5 intensely labelled both nerve fibres and selected epithelial cells, while neuropeptide immunoreactivity was scarcely expressed and exclusively localized in nerve fibres. CONCLUSIONS Similarly in the distribution pattern and neurochemistry between oral and cutaneous innervation is apparent. Expression of NGFr could be relevant to the trophism of both the oral innervation and epithelium.
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Affiliation(s)
- F Fantini
- Division of Dermatology, Ospedale Civile di Venezia, Italy
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37
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Pincelli C, Sevignani C, Manfredini R, Grande A, Fantini F, Bracci-Laudiero L, Aloe L, Ferrari S, Cossarizza A, Giannetti A. Expression and function of nerve growth factor and nerve growth factor receptor on cultured keratinocytes. J Invest Dermatol 1994; 103:13-8. [PMID: 8027574 DOI: 10.1111/1523-1747.ep12388914] [Citation(s) in RCA: 147] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Keratinocytes, a key cellular component both for homeostasis and pathophysiologic processes of the skin, secrete a number of cytokines and are stimulated by several growth factors. Nerve growth factor (NGF) is synthesized in the skin and basal keratinocytes express the low-affinity nerve growth factor receptor (NGF-R). We present evidence that normal human keratinocytes in culture express the low- and the high-affinity NGF-R both at the mRNA level, as determined by reverse-transcription polymerase chain reaction and at the protein level, as shown by cytofluorimetric analysis. NGF significantly stimulates the proliferation of normal human keratinocytes in culture in a dose-dependent manner. This effect can be prevented by the addition of both an anti-NGF neutralizing antibody and a high-affinity NGF-R (trk) specific inhibitor, the natural alkaloid K252a. By contrast, keratinocyte proliferation is not inhibited by an anti-low-affinity NGF-R monoclonal antibody, thus suggesting that NGF effect on human keratinocytes is mediated by the high-affinity NGF-R. Moreover, NGF mRNA is expressed in normal human keratinocytes and NGF is secreted by keratinocytes in increasing amounts during growth, as detected by enzyme-linked immunosorbent assay. These results suggest that NGF could act as a cytokine in human skin and take part in disorders of keratinocyte proliferation.
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Affiliation(s)
- C Pincelli
- Department of Hematology, University of Modena, Italy
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38
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Affiliation(s)
- C Pincelli
- Institute of Dermatology, University of Modena, Italy
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39
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Pincelli C, Fantini F, Giardino L, Zanni M, Calzá L, Sevignani C, Giannetti A. Autoradiographic detection of substance P receptors in normal and psoriatic skin. J Invest Dermatol 1993; 101:301-4. [PMID: 7690377 DOI: 10.1111/1523-1747.ep12365423] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Substance P has been detected in human skin and has been implicated in the pathogenesis of certain inflammatory cutaneous disorders. However, little is known about the number and distribution of substance P binding sites in the skin. Receptor autoradiography was employed to detect and quantitate substance P receptors in normal as well as psoriatic skin. Substance P binding sites were distributed in the epidermis and dermis both in normal and psoriatic skin. In the dermis, the highest densities of SP binding sites were found in the areas corresponding to the dermal papillae and the adnexal structures. Quantitative analysis revealed that saturable binding was obtained both in the epidermis and in the labeled dermal areas. Rosenthal plot values were consistent with a single population of binding sites. No difference in the binding measurements was observed between normal and psoriatic skin. The presence of substance P receptors in the epidermis and in the dermal papillae raises interesting issues on the possible targets of this peptide in human skin both under physiologic and pathologic conditions.
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Affiliation(s)
- C Pincelli
- Institute of Dermatology, University of Modena, Italy
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40
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Affiliation(s)
- C Pincelli
- Institute of Dermatology, University of Modena, Italy
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41
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Abstract
Neuropeptides (NP) are protein compounds contained both in the central and peripheral nervous system. They can be antidromically released from sensory nerves and are implicated in the so-called neurogenic inflammation. They also exert a number of functions within the immune system and are thought to act as trophic as well as mitogenic substances. Several NP have been detected in human skin by immunohistochemical and radioimmunological techniques, and recent reports have demonstrated that NP could be involved in the mechanisms of certain dermatoses. The involvement of NP in either physiological or pathophysiological skin conditions is discussed. Moreover, a few questions, which still need to be addressed, are raised, and future directions this field of research should take are outlined.
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Affiliation(s)
- C Pincelli
- Institute of Dermatology, University of Modena, Italy
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42
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Abstract
There is increasing evidence that neuropeptides (NP) such as substance P (SP) and vasoactive intestinal polypeptide (VIP) are involved in the pathogenesis of atopic dermatitis (AD). Vasoactive intestinal polypeptide levels were found to be significantly elevated in lesional skin of AD as compared to controls. We evaluated by radioimmunoassay the SP content in whole skin homogenates from chronic lichenified lesions of patients with AD. The levels of SP were significantly decreased in lesional skin from AD patients as compared to control skin (0.25 +/- 0.03 vs. 0.97 +/- 0.24 pmol/g tissue, p < 0.01). The diminished SP levels as opposed to increased VIP concentrations could be consistent with different roles of these NP as modulatory agents in the mechanisms associated with AD.
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Affiliation(s)
- F Fantini
- Institute of Dermatology, University of Modena, Italy
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43
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Fantini F, Baraldi A, Sevignani C, Spattini A, Pincelli C, Giannetti A. Cutaneous innervation in chronic renal failure patients. An immunohistochemical study. Acta Derm Venereol 1992; 72:102-5. [PMID: 1350391 DOI: 102340/0001555572102105] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Most chronic renal failure patients suffer from generalized pruritus. An involvement of cutaneous nerve terminals in the pathogenesis of uremic pruritus has been suggested. Skin specimens from 24 uremic patients and 10 healthy subjects were processed with an indirect immunofluorescence method to investigate the presence and distribution of a number of neuronal markers and neuropeptides. No difference was found between the two groups in the distribution pattern of the positive nerve fibres. However, a reduction in the total number of skin nerve terminals in the uremic patients was detected. No correlation could be found between the immunohistochemical findings and the clinical features. Our results suggest that the skin innervation is altered in most chronic renal failure patients, possibly as a consequence of neuropathy.
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Affiliation(s)
- F Fantini
- Institute of Dermatology, University of Modena, Italy
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44
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Pincelli C, Fantini F, Romualdi P, Sevignani C, Lesa G, Benassi L, Giannetti A. Substance P Is Diminished and Vasoactive Intestinal Peptide Is Augmented in Psoriatic Lesions and These Peptides Exert Disparate Effects on the Proliferation of Cultured Human Keratinocytes. J Invest Dermatol 1992; 98:421-7. [PMID: 1372339 DOI: 10.1111/1523-1747.ep12499846] [Citation(s) in RCA: 98] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
An involvement of neurogenic components in the pathogenesis of psoriatic lesions has been suggested and neuropeptides are thought to play a modulatory role in cutaneous inflammation. In this study, we evaluated the immunoreactivity of the neuropeptides vasoactive intestinal polypeptide (VIP) and substance P (SP) in the skin of patients with chronic plaque psoriasis, by immunohistochemistry and radioimmunoassay. No differences were observed, by immunohistochemistry, in the expression and localization of VIP and SP between psoriatic and normal skin. Using the radioimmunologic technique on whole skin homogenates, VIP levels were significantly increased in psoriatic lesions as compared to normal skin. By contrast, SP levels were significantly lower in lesional and non-lesional psoriatic skin than in normal skin. In addition, we examined the effect of VIP and SP on the proliferation of cultured normal human keratinocytes. VIP (1-28) (1 nM-1 microM) as well as VIP fragments (10-28) (1 nM-1 microM) and (22-28) (1 nM-1 microM) stimulated the proliferation of keratinocytes in a dose-dependent manner, whereas the VIP fragment (1-12) (1 nM-1 microM) was ineffective. The VIP antagonist (N-Ac-Tyr1, D-Phe2)-GRF (1-29)-NH2 (0.1 microM) significantly inhibited the VIP effect on keratinocytes. On the other hand, SP (0.1 microM) not only failed to stimulate keratinocyte growth, but also blocked the VIP-induced stimulation of these cells. The imbalance of cutaneous VIP and SP and their disparate effects on the proliferation of normal human keratinocytes in culture would suggest that these peptides are involved in the pathogenesis of psoriasis and may exert different modulatory activities in the mechanisms underlying the psoriatic lesion.
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Affiliation(s)
- C Pincelli
- Institute of Dermatology, University of Modena, Modena, Italy
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45
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Girolomoni G, Pincelli C, Zambruno G, Andreani M, Giardini C, Lucarelli G, Giannetti A. Immunohistochemistry of cutaneous graft-versus-host disease after allogeneic bone marrow transplantation. J Dermatol 1991; 18:314-23. [PMID: 1939860 DOI: 10.1111/j.1346-8138.1991.tb03091.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Graft-versus-host disease (GVHD) is an immunologically mediated disease occurring most frequently after allogeneic bone marrow transplantation. The aim of this study was to evaluate the contribution of immunohistochemistry in the diagnosis of cutaneous GVHD. Patients transplanted for either leukemia or beta-thalassemia were included in the study. Skin lesions of acute and chronic GVHD were examined both by direct immunofluorescence to detect immunoglobulin deposits and by an avidin-biotin-peroxidase complex technique to evaluate the inflammatory cell infiltrate. Epidermal and dermal fluorescent bodies (IgG and IgM) were frequently found in both acute and chronic GVHD. Most of the infiltrating cells were CD3+ T lymphocytes, with CD8+ cells representing the major cell population invading the epidermis both in acute GVHD and in chronic lichenoid GVHD. A small proportion of the dermal cells were CD14+ macrophages; no B cells were detected. HLA-DR, but not HLA-DQ antigens, were variably expressed by keratinocytes in all cases of acute GVHD and in chronic lichenoid GVHD. KL-1, a monoclonal antikeratin antibody specific for the 56.5 KD acidic polypeptide usually present in suprabasal keratinocytes, stained all epidermal layers, including the basal layer. Langerhans cells were dramatically reduced in number in the epidermis of both acute and chronic lichenoid GVHD. It is concluded that immunohistologic analysis may be supportive in the diagnosis of acute and early chronic lichenoid cutaneous GVHD.
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Affiliation(s)
- G Girolomoni
- Clinica Dermatologica, Università di Modena, Italy
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46
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Kanitakis J, Fantini F, Pincelli C, Hermier C, Schmitt D, Thivolet J. Neuron-specific enolase is a marker of cutaneous Langerhans' cell histiocytosis ("X")-a comparative study with S100 protein. Anticancer Res 1991; 11:635-9. [PMID: 1648331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The immunohistochemical expression of neuron-specific enolase (gamma/gamma) (NSE) was studied comparatively with S100 protein in a group of Langerhans-cell-type ("X") (n = 8) and non-Langerhans-cell-type ("non X") (n = 24) cutaneous histiocytoses. NSE was expressed by the majority (70-90%) of histiocytic cells in all cases of Langerhans-cell histiocytoses, whereas it was absent from non-Langerhans-cell histiocytoses. S100 protein was expressed by the majority of Langerhans-cell histiocytosis cells but also by a small percentage (1-5%) of cells in non Langerhans-cell histiocytoses. These results show that NSE is almost as sensitive as, but more specific than, S100 protein in discriminating Langerhans-cell from non-Langerhans cell cutaneous histiocytoses, and that it consequently represents a useful adjunct in the immunohistochemical diagnosis of histiocytic skin diseases.
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Affiliation(s)
- J Kanitakis
- Laboratory of Dermatopathology/INSERM U209, Ed. Herriot Hospital, Lyon, France
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47
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Abstract
Atopic dermatitis (AD) can be exacerbated by various factors, including emotional stress, scratching and sweating. The aim of the present study was to evaluate the hypothesis that the inflammatory reaction in AD is also neurogenic. For this purpose, the levels of vasoactive intestinal polypeptide were measured radioimmunologically in whole-tissue homogenates of lesional skin of 13 patients with atopic dermatitis. Radioimmunoassay was performed using an antiserum, AH78, recognizing the carboxy-terminal fragment vasoactive intestinal polypeptide (22-28). Vasoactive intestinal polypeptide immunoreactivity was detected in relatively low amounts in control skin (0.428 +/- 0.08 pmol/g tissue), whereas a marked increase in the peptide was observed in lesional skin of patients with atopic dermatitis (5.62 +/- 1.25 pmol/g tissue). These results seem to suggest that vasoactive intestinal polypeptide could have a pathogenetic relevance in skin lesions of atopic dermatitis.
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Affiliation(s)
- C Pincelli
- Institute of Dermatology, University of Modena, Italy
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48
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Affiliation(s)
- F Fantini
- Institute of Dermatology, University of Modena, Italy
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49
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Hashimoto A, Pincelli C, Fujioka A, Fukuyama K, Epstein WL. Relationship between NK cells and granulomatous inflammation in mice. J Clin Lab Immunol 1990; 33:41-7. [PMID: 1966942] [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] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The relationship between natural killer (NK) cells and granulomatous inflammation was investigated using two experimental granuloma models in C57BL/6 mice. The hepatic granuloma model was produced by infection with Schistosoma mansoni (S. mansoni), and the skin granuloma model was established by subcutaneous inoculation of the isolated hepatic granulomas. NK cell activity in lymph nodes and spleen, measured by 51Cr-release assay against YAC-1 cells, was compared to that in age-matched control mice. The activity decreased progressively as granulomas developed without changing the number of NK-1.1+ cells. The reduced NK cell activity was not reversed by administration of indomethacin. In order to further substantiate whether NK cells contribute to granulomatous inflammation, NK cells were depleted in the mice by injection of anti-NK-1.1 mAb. Reduction of NK cell activity (70-90%) was achieved during granuloma formation. An increase of about 20% in the mean granuloma diameter was detected in the mAb-treated mice in both models. Moreover, the percentage of granuloma takes in the skin model was enhanced (65% increase). The mAb treatment did not alter T cell counts in granulomas, T cell subset numbers or proliferative response in spleen. These findings indicate that NK cells directly play a regulatory role in granulomatous inflammation.
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Affiliation(s)
- A Hashimoto
- Department of Dermatology, University of California, San Francisco 94143-0536
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50
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Pincelli C, Fantini F, Massimi P, Girolomoni G, Seidenari S, Giannetti A. Neuropeptides in skin from patients with atopic dermatitis: an immunohistochemical study. Br J Dermatol 1990; 122:745-50. [PMID: 1695105 DOI: 10.1111/j.1365-2133.1990.tb06261.x] [Citation(s) in RCA: 121] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The distribution and localization of several neuropeptides were investigated in the lichenified lesions of 11 patients with atopic dermatitis using indirect immunofluorescence. Substance P-positive nerve fibres were observed in most of the cases of atopic dermatitis, but not in normal controls. Somatostatin immunoreactive nerves were not found in the skin of atopic dermatitis, whereas a normal pattern of immunoreactivity could be detected in most of the healthy subjects. Neuropeptide Y-positive dendritic epidermal cells were observed in lesional skin from patients with atopic dermatitis, but not in controls. Calcitonin gene-related peptide and vasoactive intestinal polypeptide immunoreactivity in patients with atopic dermatitis did not differ from that in healthy subjects. With galanin antiserum a diffuse intracellular staining was observed in the epidermis of both atopic patients and controls, while no positive staining was found with either neurotensin or neurokinin A antibodies in either group. These findings suggest a possible involvement of some neuropeptides in the pathomechanisms of atopic dermatitis.
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Affiliation(s)
- C Pincelli
- Department of Dermatology, University of Modena, Italy
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