1
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Ingen-Housz-Oro S, Schmidt V, Ameri MM, Abe R, Brassard A, Mostaghimi A, Paller AS, Romano A, Didona B, Kaffenberger BH, Ben Said B, Thong BYH, Ramsay B, Brezinova E, Milpied B, Mortz CG, Chu CY, Sotozono C, Gueudry J, Fortune DG, Dridi SM, Tartar D, Do-Pham G, Gabison E, Phillips EJ, Lewis F, Salavastru C, Horvath B, Dart J, Setterfield J, Newman J, Schulz JT, Delcampe A, Brockow K, Seminario-Vidal L, Jörg L, Watson MP, Gonçalo M, Lucas M, Torres M, Noe MH, Hama N, Shear NH, O’Reilly P, Wolkenstein P, Romanelli P, Dodiuk-Gad RP, Micheletti RG, Tiplica GS, Sheridan R, Rauz S, Ahmad S, Chua SL, Flynn TH, Pichler W, Le ST, Maverakis E, Walsh S, French LE, Brüggen MC. Post-acute phase and sequelae management of epidermal necrolysis: an international, multidisciplinary DELPHI-based consensus. Orphanet J Rare Dis 2023; 18:33. [PMID: 36814255 PMCID: PMC9945700 DOI: 10.1186/s13023-023-02631-7] [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: 08/22/2022] [Accepted: 02/06/2023] [Indexed: 02/24/2023] Open
Abstract
BACKGROUND Long-term sequelae are frequent and often disabling after epidermal necrolysis (Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN)). However, consensus on the modalities of management of these sequelae is lacking. OBJECTIVES We conducted an international multicentric DELPHI exercise to establish a multidisciplinary expert consensus to standardize recommendations regarding management of SJS/TEN sequelae. METHODS Participants were sent a survey via the online tool "Survey Monkey" consisting of 54 statements organized into 8 topics: general recommendations, professionals involved, skin, oral mucosa and teeth, eyes, genital area, mental health, and allergy workup. Participants evaluated the level of appropriateness of each statement on a scale of 1 (extremely inappropriate) to 9 (extremely appropriate). Results were analyzed according to the RAND/UCLA Appropriateness Method. RESULTS Fifty-two healthcare professionals participated. After the first round, a consensus was obtained for 100% of 54 initially proposed statements (disagreement index < 1). Among them, 50 statements were agreed upon as 'appropriate'; four statements were considered 'uncertain', and ultimately finally discarded. CONCLUSIONS Our DELPHI-based expert consensus should help guide physicians in conducting a prolonged multidisciplinary follow-up of sequelae in SJS-TEN.
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Affiliation(s)
- S. Ingen-Housz-Oro
- grid.412116.10000 0004 1799 3934Department of Dermatology, AP-HP, Henri Mondor Hospital, 1 Rue Gustave Eiffel, 94000 Créteil, France ,ToxiTEN Group, European Reference Network for Rare Skin Diseases, Paris, France ,Reference Center for Toxic Bullous Dermatoses and Severe Drug Reactions TOXIBUL, Créteil, France ,grid.410511.00000 0001 2149 7878EpiDermE, Université Paris Est Créteil, Créteil, France
| | - V. Schmidt
- grid.410567.1University Hospital Basel, Basel, Switzerland ,grid.7400.30000 0004 1937 0650Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - M. M. Ameri
- grid.7400.30000 0004 1937 0650Faculty of Medicine, University of Zurich, Zurich, Switzerland ,grid.412004.30000 0004 0478 9977Department of Dermatology, University Hospital Zurich, Zurich, Switzerland ,grid.507894.70000 0004 4700 6354Christine Kühne-Center for Allergy Research and Education, Davos, Switzerland
| | - R. Abe
- grid.260975.f0000 0001 0671 5144Division of Dermatology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - A. Brassard
- grid.413079.80000 0000 9752 8549Department of Dermatology, UC Davis Medical Center, Sacramento, CA USA
| | - A. Mostaghimi
- grid.62560.370000 0004 0378 8294Department of Dermatology, Brigham and Women’s Hospital, Boston, MA USA
| | - A. S. Paller
- grid.16753.360000 0001 2299 3507Department of Dermatology, Northwestern University Feinberg School of Medicine, Chicago, IL USA
| | - A. Romano
- grid.419843.30000 0001 1250 7659Oasi Research Institute-IRCCS, Troina, Italy
| | - B. Didona
- ToxiTEN Group, European Reference Network for Rare Skin Diseases, Paris, France ,grid.419457.a0000 0004 1758 0179Rare Disease Unit, I Dermatology Division, Istituto Dermopatico Dell’Immacolata, IRCCS, Rome, Italy
| | - B. H. Kaffenberger
- ToxiTEN Group, European Reference Network for Rare Skin Diseases, Paris, France ,grid.412332.50000 0001 1545 0811The Ohio State University Wexner Medical Center Division of Dermatology, Upper Arlington, OH USA
| | - B. Ben Said
- ToxiTEN Group, European Reference Network for Rare Skin Diseases, Paris, France ,Reference Center for Toxic Bullous Dermatoses and Severe Drug Reactions TOXIBUL, Créteil, France ,Department of Dermatology, CHU Edouard Herriot, Lyon, France
| | - B. Y. H. Thong
- grid.240988.f0000 0001 0298 8161Department of Rheumatology, Allergy and Immunology, Tan Tock Seng Hospital, Singapore, Singapore
| | - B. Ramsay
- grid.415522.50000 0004 0617 6840Department of Dermatology, University Hospital Limerick, Limerick, Ireland
| | - E. Brezinova
- ToxiTEN Group, European Reference Network for Rare Skin Diseases, Paris, France ,grid.10267.320000 0001 2194 0956First Department of Dermatovenereology, Masaryk University Faculty of Medicine, St. Ann’s Faculty Hospital in Brno, Brno, Czech Republic
| | - B. Milpied
- ToxiTEN Group, European Reference Network for Rare Skin Diseases, Paris, France ,Reference Center for Toxic Bullous Dermatoses and Severe Drug Reactions TOXIBUL, Créteil, France ,grid.412041.20000 0001 2106 639XDepartment of Adult and Pediatric Dermatology, Bordeaux University Hospitals, Bordeaux, France
| | - C. G. Mortz
- grid.7143.10000 0004 0512 5013Department of Dermatology and Allergy Center, Odense Research Center for Anaphylaxis (ORCA), Odense University Hospital, Odense, Denmark
| | - C. Y. Chu
- grid.19188.390000 0004 0546 0241Department of Dermatology, National Taiwan University Hospital, National Taiwan University College of Medicine, No. 7, Chung-Shan South Road, Taipei, 10002 Taiwan
| | - C. Sotozono
- grid.272458.e0000 0001 0667 4960Department of Ophthalmology, Kyoto Prefectural University of Medicine, 465 Kajii-Cho, Hirokoji-Agaru, Kawaramach-Dori, Kamigyo-Ku, Kyoto, 602-0841 Japan
| | - J. Gueudry
- Reference Center for Toxic Bullous Dermatoses and Severe Drug Reactions TOXIBUL, Créteil, France ,grid.417615.0Department of Ophthalmology, CHU Charles-Nicolle, Rouen, France
| | - D. G. Fortune
- grid.10049.3c0000 0004 1936 9692Department of Psychology, University of Limerick, Limerick, Ireland
| | - S. M. Dridi
- Reference Center for Toxic Bullous Dermatoses and Severe Drug Reactions TOXIBUL, Créteil, France ,grid.416670.2MICORALIS Laboratory, Department of Periodontology, Faculty of Dentistry, Côte d’Azur University, Saint Roch Hospital, Nice, France
| | - D. Tartar
- grid.27860.3b0000 0004 1936 9684Department of Dermatology, University of California Davis, Sacramento, CA USA
| | - G. Do-Pham
- Reference Center for Toxic Bullous Dermatoses and Severe Drug Reactions TOXIBUL, Créteil, France ,grid.414145.10000 0004 1765 2136Department of Internal Medicine, Centre Hospitalier Intercommunal de Créteil, Créteil, France
| | - E. Gabison
- grid.417888.a0000 0001 2177 525XFondation Ophtalmologique Adolphe de Rothschild, Paris, France
| | - E. J. Phillips
- grid.1025.60000 0004 0436 6763Institute for Immunology and Infectious Diseases, Murdoch University, Murdoch, WA Australia ,grid.412807.80000 0004 1936 9916Department of Medicine, Vanderbilt University Medical Center, Nashville, TN USA
| | - F. Lewis
- grid.425213.3St John’s Institute of Dermatology, Guy’s and St Thomas’ Hospital, London, UK
| | - C. Salavastru
- ToxiTEN Group, European Reference Network for Rare Skin Diseases, Paris, France ,Department of Paediatric Dermatology, Colentina Clinical Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | - B. Horvath
- ToxiTEN Group, European Reference Network for Rare Skin Diseases, Paris, France ,grid.4830.f0000 0004 0407 1981Department of Dermatology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9700 RB Groningen, The Netherlands
| | - J. Dart
- grid.83440.3b0000000121901201Moorfields Eye Hospital NHS Foundation Trust, The UCL Institute of Ophthalmology, London, UK
| | - J. Setterfield
- ToxiTEN Group, European Reference Network for Rare Skin Diseases, Paris, France ,grid.420545.20000 0004 0489 3985Department of Oral Medicine, Guy’s and St Thomas’ NHS Foundation Trust, London, UK
| | - J. Newman
- grid.429705.d0000 0004 0489 4320Department of Dermatology, King’s College Hospital NHS Foundation Trust, London, UK
| | - J. T. Schulz
- grid.32224.350000 0004 0386 9924Division of Burns, Massachusetts General Hospital, Boston, 02114 USA
| | - A. Delcampe
- Reference Center for Toxic Bullous Dermatoses and Severe Drug Reactions TOXIBUL, Créteil, France ,grid.417615.0Department of Ophthalmology, CHU Charles-Nicolle, Rouen, France ,grid.417888.a0000 0001 2177 525XFondation Ophtalmologique Adolphe de Rothschild, Paris, France ,grid.411119.d0000 0000 8588 831XDepartment of Ophthalmology, CHU Bichat-Claude Bernard, Paris, France
| | - K. Brockow
- grid.6936.a0000000123222966Department of Dermatology and Allergy Biederstein, School of Medicine, Technical University of Munich, Munich, Germany
| | - L. Seminario-Vidal
- grid.170693.a0000 0001 2353 285XDepartment of Dermatology and Cutaneous Surgery, University of South Florida, Tampa, FL USA
| | - L. Jörg
- grid.412004.30000 0004 0478 9977Department of Dermatology, University Hospital Zurich, Zurich, Switzerland ,grid.5734.50000 0001 0726 5157Division of Allergology and Clinical Immunology, Department of Pneumology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - M. P. Watson
- grid.439257.e0000 0000 8726 5837Cornea and External Eye Disease Service, Moorfields Eye Hospital, London, UK
| | - M. Gonçalo
- grid.28911.330000000106861985Department of Dermatology, Coimbra University Hospital Center, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - M. Lucas
- grid.1012.20000 0004 1936 7910Medical School, University of Western Australia, Perth, WA 6009 Australia ,grid.3521.50000 0004 0437 5942Department of Immunology, Sir Charles Gairdner Hospital, Pathwest Laboratory Medicine, Perth, WA 6009 Australia
| | - M. Torres
- grid.452525.1Allergy Unit, IBIMA-Regional University Hospital of Malaga-UMA, Málaga, Spain
| | - M. H. Noe
- grid.62560.370000 0004 0378 8294Department of Dermatology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA USA
| | - N. Hama
- grid.260975.f0000 0001 0671 5144Division of Dermatology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - N. H. Shear
- grid.17063.330000 0001 2157 2938Department of Dermatology, University of Toronto, Toronto, ON Canada ,grid.413104.30000 0000 9743 1587Sunnybrook Health Sciences Centre, Toronto, ON Canada
| | - P. O’Reilly
- grid.10049.3c0000 0004 1936 9692Department of Nursing and Midwifery, University of Limerick, Limerick, Ireland
| | - P. Wolkenstein
- grid.412116.10000 0004 1799 3934Department of Dermatology, AP-HP, Henri Mondor Hospital, 1 Rue Gustave Eiffel, 94000 Créteil, France ,ToxiTEN Group, European Reference Network for Rare Skin Diseases, Paris, France ,Reference Center for Toxic Bullous Dermatoses and Severe Drug Reactions TOXIBUL, Créteil, France
| | - P. Romanelli
- grid.26790.3a0000 0004 1936 8606Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, University of Miami, Miller School of Medicine, Miami, FL USA
| | - R. P. Dodiuk-Gad
- grid.6451.60000000121102151Dermatology Department, Emek Medical Center, Bruce Rappaport Faculty of Medicine, Technion - Institute of Technology, Haifa, Israel ,grid.17063.330000 0001 2157 2938Department of Medicine, University of Toronto, Toronto, Canada
| | - R. G. Micheletti
- grid.25879.310000 0004 1936 8972Department of Dermatology and Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA USA
| | - G. S. Tiplica
- ToxiTEN Group, European Reference Network for Rare Skin Diseases, Paris, France ,2Nd Department of Dermatology, Colentina Clinical Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | - R. Sheridan
- grid.415829.30000 0004 0449 5362Burn Service, Boston Shriners Hospital for Children, Boston, MA USA ,grid.32224.350000 0004 0386 9924Division of Burns, Massachusetts General Hospital, Boston, MA USA ,grid.38142.3c000000041936754XDepartment of Surgery, Harvard Medical School, Boston, MA USA
| | - S. Rauz
- grid.6572.60000 0004 1936 7486Academic Unit of Ophthalmology, Birmingham and Midland Eye Centre, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
| | - S. Ahmad
- grid.83440.3b0000000121901201Moorfields Eye Hospital NHS Foundation Trust, The UCL Institute of Ophthalmology, London, UK
| | - S. L. Chua
- ToxiTEN Group, European Reference Network for Rare Skin Diseases, Paris, France ,grid.412563.70000 0004 0376 6589Department of Dermatology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - T. H. Flynn
- grid.460892.10000 0004 0389 5639Ophthalmology, Bon Secours Hospital, Cork, Ireland
| | - W. Pichler
- grid.482939.dADR-AC GmbH, Bern, Switzerland
| | - S. T. Le
- grid.413079.80000 0000 9752 8549Department of Dermatology, UC Davis Medical Center, Sacramento, CA USA
| | - E. Maverakis
- grid.413079.80000 0000 9752 8549Department of Dermatology, UC Davis Medical Center, Sacramento, CA USA
| | - S. Walsh
- ToxiTEN Group, European Reference Network for Rare Skin Diseases, Paris, France ,grid.429705.d0000 0004 0489 4320Department of Dermatology, King’s College Hospital NHS Foundation Trust, London, UK
| | - L. E. French
- ToxiTEN Group, European Reference Network for Rare Skin Diseases, Paris, France ,grid.411095.80000 0004 0477 2585Department of Dermatology, University Hospital, Munich University of Ludwig Maximilian, Munich, Germany ,grid.26790.3a0000 0004 1936 8606Dr Phillip Frost Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL USA
| | - M. C. Brüggen
- ToxiTEN Group, European Reference Network for Rare Skin Diseases, Paris, France ,grid.7400.30000 0004 1937 0650Faculty of Medicine, University of Zurich, Zurich, Switzerland ,grid.412004.30000 0004 0478 9977Department of Dermatology, University Hospital Zurich, Zurich, Switzerland ,grid.507894.70000 0004 4700 6354Christine Kühne-Center for Allergy Research and Education, Davos, Switzerland
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Drucker AM, Shear NH. Bruton tyrosine kinase inhibition warrants further study for pemphigus. Br J Dermatol 2021; 185:691-692. [PMID: 34318490 DOI: 10.1111/bjd.20623] [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: 06/09/2021] [Accepted: 06/10/2021] [Indexed: 11/29/2022]
Affiliation(s)
- A M Drucker
- Division of Dermatology, Department of Medicine, University of Toronto, Toronto, ON, Canada.,Department of Medicine and Women's College Research Institute, Women's College Hospital, Toronto, ON, Canada
| | - N H Shear
- Division of Dermatology, Department of Medicine, University of Toronto, Toronto, ON, Canada
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3
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Ramien ML, Bahubeshi A, Lara-Corrales I, Pope E, Levy ML, Nopper AJ, Shear NH, Eichenfield L. Blistering severe cutaneous adverse reactions in children: proposal for paediatric-focused clinical criteria. Br J Dermatol 2021; 185:447-449. [PMID: 33730370 DOI: 10.1111/bjd.20063] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 02/23/2021] [Accepted: 03/14/2021] [Indexed: 11/29/2022]
Affiliation(s)
- M L Ramien
- Division of Community Pediatrics, Department of Pediatrics, Alberta Children's Hospital, University of Calgary, Calgary, AB, Canada.,Division of Dermatology, Department of Medicine, University of Calgary, Calgary, AB, Canada.,University of Ottawa, Ottawa, ON, Canada
| | | | - I Lara-Corrales
- Section of Paediatric Dermatology, The Hospital for Sick Children and University of Toronto, Toronto, ON, Canada
| | - E Pope
- Section of Paediatric Dermatology, The Hospital for Sick Children and University of Toronto, Toronto, ON, Canada
| | - M L Levy
- Department of Pediatrics and Medicine (Dermatology), Dell Medical School, University of Texas, Austin, TX, USA.,Pediatric/Adolescent Dermatology, Dell Children's Medical Center, Austin, TX, USA
| | - A J Nopper
- Division of Dermatology, Children's Mercy-Kansas City, Kansas City, MO, USA
| | - N H Shear
- Division of Dermatology, Department of Medicine, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - L Eichenfield
- Division of Pediatric and Adolescent Dermatology, Rady Children's Hospital, San Diego, CA, USA.,Departments of Dermatology and Pediatrics, University of California, San Diego School of Medicine, University of California, San Diego, CA, USA
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4
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Brüggen MC, Le ST, Walsh S, Toussi A, de Prost N, Ranki A, Didona B, Colin A, Horváth B, Brezinova E, Milpied B, Moss C, Bodemer C, Meyersburg D, Salavastru C, Tiplica GS, Howard E, Bequignon E, Bouwes Bavinck JN, Newman J, Gueudry J, Nägeli M, Zaghbib K, Pallesen K, Bygum A, Joly P, Wolkenstein P, Chua SL, Le Floch R, Shear NH, Chu CY, Hama N, Abe R, Chung WH, Shiohara T, Ardern-Jones M, Romanelli P, Phillips EJ, Stern RS, Cotliar J, Micheletti RG, Brassard A, Schulz JT, Dodiuk-Gad RP, Dominguez AR, Paller AS, Seminario-Vidal L, Mostaghimi A, Noe MH, Worswick S, Tartar D, Sheridan R, Kaffenberger BH, Shinkai K, Maverakis E, French LE, Ingen-Housz-Oro S. Supportive care in the acute phase of Stevens-Johnson syndrome and toxic epidermal necrolysis: an international, multidisciplinary Delphi-based consensus. Br J Dermatol 2021; 185:616-626. [PMID: 33657677 DOI: 10.1111/bjd.19893] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/25/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND Supportive care is the cornerstone of management of adult and paediatric Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN). However, consensus on the modalities of supportive care is lacking. OBJECTIVES Our aim in this international multicentric Delphi exercise was to establish a multidisciplinary expert consensus to standardize recommendations regarding supportive care in the acute phase of SJS/TEN. METHODS Participants were sent a survey via the online tool SurveyMonkey, consisting of 103 statements organized into 11 topics: multidisciplinary team composition, suspect drug management, infection prevention, fluid resuscitation and prevention of hypothermia, nutritional support, pain and psychological distress management, management of acute respiratory failure, local skincare, ophthalmological management, management of other mucosa, and additional measures. Participants evaluated the level of appropriateness of each statement on a scale of 1 (extremely inappropriate) to 9 (extremely appropriate). The results were analysed according to the RAND/UCLA Appropriateness Method. RESULTS Forty-five participants from 13 countries (on three continents) participated. After the first round, a consensus was obtained for 82.5% of the 103 initially proposed statements. After the second round, a final consensus was obtained for 102 statements. CONCLUSIONS We have reached an international Delphi-based consensus on best supportive care practice for SJS/TEN. Our expert consensus should help guide physicians in treating patients with SJS/TEN and thereby improve short-term prognosis and the risk of sequelae.
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Affiliation(s)
- M-C Brüggen
- Department of Dermatology, University Hospital Zurich, Zurich, Switzerland.,Faculty of Medicine, University of Zurich, Zurich, Switzerland.,Christine Kühne Center for Allergy Research and Education, Davos, Switzerland.,ToxiTEN Group, European Reference Network for Rare Skin Diseases (ERN-skin), Paris, France
| | - S T Le
- Department of Dermatology, University of California, Davis, Sacramento, CA, USA
| | - S Walsh
- ToxiTEN Group, European Reference Network for Rare Skin Diseases (ERN-skin), Paris, France.,Department of Dermatology, King's College Hospital, London, UK
| | - A Toussi
- Department of Dermatology, University of California, Davis, Sacramento, CA, USA
| | - N de Prost
- Intensive Care Unit, AP-HP, Henri Mondor Hospital, Créteil, France.,Toxic Bullous Dermatoses TOXIBUL Reference Centre, Filière FIMARAD, AP-HP, Henri Mondor Hospital, Créteil, France
| | - A Ranki
- ToxiTEN Group, European Reference Network for Rare Skin Diseases (ERN-skin), Paris, France.,Department of Skin and Allergic Diseases, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland
| | - B Didona
- ToxiTEN Group, European Reference Network for Rare Skin Diseases (ERN-skin), Paris, France.,First Dermatology Division, Institute Dermopatico dell'Immacolata (I.D.I.) - IRCCS, Via Monti di Creta 104, Rome, 00167, Italy
| | - A Colin
- ToxiTEN Group, European Reference Network for Rare Skin Diseases (ERN-skin), Paris, France.,Toxic Bullous Dermatoses TOXIBUL Reference Centre, Filière FIMARAD, AP-HP, Henri Mondor Hospital, Créteil, France.,Dermatology Department, AP-HP, Henri Mondor Hospital, Créteil, France
| | - B Horváth
- ToxiTEN Group, European Reference Network for Rare Skin Diseases (ERN-skin), Paris, France.,Department of Dermatology, Center for Blistering Diseases, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - E Brezinova
- ToxiTEN Group, European Reference Network for Rare Skin Diseases (ERN-skin), Paris, France.,Department of Dermatovenereology, St Ann's University Hospital, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - B Milpied
- ToxiTEN Group, European Reference Network for Rare Skin Diseases (ERN-skin), Paris, France.,Toxic Bullous Dermatoses TOXIBUL Reference Centre, Filière FIMARAD, AP-HP, Henri Mondor Hospital, Créteil, France.,Department of Dermatology, CHU Bordeaux, Bordeaux, France
| | - C Moss
- ToxiTEN Group, European Reference Network for Rare Skin Diseases (ERN-skin), Paris, France.,Birmingham Children's Hospital and University of Birmingham, Birmingham, UK
| | - C Bodemer
- ToxiTEN Group, European Reference Network for Rare Skin Diseases (ERN-skin), Paris, France.,Toxic Bullous Dermatoses TOXIBUL Reference Centre, Filière FIMARAD, AP-HP, Henri Mondor Hospital, Créteil, France.,Department of Dermatology, AP-HP, Necker Hospital, Paris, France
| | - D Meyersburg
- ToxiTEN Group, European Reference Network for Rare Skin Diseases (ERN-skin), Paris, France.,Department of Dermatology and Allergology, University Hospital Salzburg of the Paracelsus Medical University Salzburg, Salzburg, Austria
| | - C Salavastru
- ToxiTEN Group, European Reference Network for Rare Skin Diseases (ERN-skin), Paris, France.,Department of Paediatric Dermatology, Colentina Clinical Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | - G-S Tiplica
- ToxiTEN Group, European Reference Network for Rare Skin Diseases (ERN-skin), Paris, France.,Department of Dermatology II, Colentina Clinical Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | - E Howard
- ToxiTEN Group, European Reference Network for Rare Skin Diseases (ERN-skin), Paris, France.,Birmingham Children's Hospital and University of Birmingham, Birmingham, UK
| | - E Bequignon
- ToxiTEN Group, European Reference Network for Rare Skin Diseases (ERN-skin), Paris, France.,Department of Otorhinolaryngology and Head and Neck Surgery, AP-HP, Henri Mondor Hospital, Créteil, France
| | - J N Bouwes Bavinck
- Department of Dermatology, Leiden University Medical Center, Leiden, the Netherlands
| | - J Newman
- Macmillan Skin Cancer CNS, Normanby Building, Denmark Hill, London, UK
| | - J Gueudry
- Toxic Bullous Dermatoses TOXIBUL Reference Centre, Filière FIMARAD, AP-HP, Henri Mondor Hospital, Créteil, France.,Ophthalmology Department, Hospital Charles Nicolle, EA7510, UFR Santé, Rouen University, Rouen, France
| | - M Nägeli
- Department of Dermatology, University Hospital Zurich, Zurich, Switzerland
| | - K Zaghbib
- Toxic Bullous Dermatoses TOXIBUL Reference Centre, Filière FIMARAD, AP-HP, Henri Mondor Hospital, Créteil, France.,Department of Psychiatry, AP-HP, Henri Mondor-Albert Chenevier Hospitals, Cr, France
| | - K Pallesen
- ToxiTEN Group, European Reference Network for Rare Skin Diseases (ERN-skin), Paris, France.,Department of Dermatology, Aarhus University Hospital, Palle Juul-Jensens, Aarhus, Denmark
| | - A Bygum
- ToxiTEN Group, European Reference Network for Rare Skin Diseases (ERN-skin), Paris, France.,Clinical Institute, University of Southern Denmark, Department of Clinical Genetics, Odense University Hospital, Odense, Denmark
| | - P Joly
- ToxiTEN Group, European Reference Network for Rare Skin Diseases (ERN-skin), Paris, France.,Toxic Bullous Dermatoses TOXIBUL Reference Centre, Filière FIMARAD, AP-HP, Henri Mondor Hospital, Créteil, France.,Department of Dermatology, CHU Charles, Nicolle, Rouen, France
| | - P Wolkenstein
- ToxiTEN Group, European Reference Network for Rare Skin Diseases (ERN-skin), Paris, France.,Toxic Bullous Dermatoses TOXIBUL Reference Centre, Filière FIMARAD, AP-HP, Henri Mondor Hospital, Créteil, France.,Dermatology Department, AP-HP, Henri Mondor Hospital, Créteil, France
| | - S-L Chua
- ToxiTEN Group, European Reference Network for Rare Skin Diseases (ERN-skin), Paris, France.,Queen Elizabeth Hospital Birmingham, University Hospital Birmingham NHS Foundation Trust, Birmingham, UK
| | - R Le Floch
- Toxic Bullous Dermatoses TOXIBUL Reference Centre, Filière FIMARAD, AP-HP, Henri Mondor Hospital, Créteil, France.,Réanimation Chirurgicale et des Brûlés, PTMC, CHU Nantes, Nantes, France
| | - N H Shear
- Division of Clinical Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada.,Division of Dermatology, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - C-Y Chu
- Department of Dermatology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - N Hama
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - R Abe
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - W-H Chung
- Department of Dermatology, Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - T Shiohara
- Department of Dermatology, Kyorin University School of Medicine, Tokyo, Japan
| | - M Ardern-Jones
- Clinical Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, UK
| | - P Romanelli
- Department of Dermatology and Cutaneous Surgery, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - E J Phillips
- Department of Medicine & Pharmacology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - R S Stern
- Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | | | - R G Micheletti
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - A Brassard
- Department of Dermatology, University of California, Davis, Sacramento, CA, USA
| | - J T Schulz
- Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - R P Dodiuk-Gad
- Division of Dermatology, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - A R Dominguez
- Department of Dermatology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - A S Paller
- Departments of Dermatology and Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - L Seminario-Vidal
- Department of Dermatology, University of South Florida, Cutaneous Oncology Program, Moffitt Cancer Center, Tampa, FL, USA
| | - A Mostaghimi
- Department of Dermatology, Brigham & Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - M H Noe
- Department of Dermatology, Brigham & Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - S Worswick
- Keck-USC School of Medicine, Los Angeles, CA, USA
| | - D Tartar
- Department of Dermatology, University of California, Davis, Sacramento, CA, USA
| | - R Sheridan
- Burn Surgery Service, Shriners Burns Hospital, Sumner Redstone Burn Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - B H Kaffenberger
- Division of Dermatology, Department of Internal Medicine, Ohio State University, Columbus, OH, USA
| | - K Shinkai
- Department of Dermatology, University of California, San Francisco, CA, USA
| | - E Maverakis
- Department of Dermatology, University of California, Davis, Sacramento, CA, USA
| | - L E French
- ToxiTEN Group, European Reference Network for Rare Skin Diseases (ERN-skin), Paris, France.,Clinical Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, UK.,Department of Dermatology and Allergy, University Hospital of Munich, LMU, Munich, Germany
| | - S Ingen-Housz-Oro
- ToxiTEN Group, European Reference Network for Rare Skin Diseases (ERN-skin), Paris, France.,Toxic Bullous Dermatoses TOXIBUL Reference Centre, Filière FIMARAD, AP-HP, Henri Mondor Hospital, Créteil, France.,Dermatology Department, AP-HP, Henri Mondor Hospital, Créteil, France.,Universit, EpiDermE, Créteil, France
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5
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Sachdeva M, Kinoshita-Ise M, Shear NH. Pseudotrichoscopic findings from colour product use: a retrospective analysis and a test to reproduce findings. Clin Exp Dermatol 2020; 46:360-362. [PMID: 33448450 DOI: 10.1111/ced.14382] [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: 06/28/2020] [Accepted: 07/15/2020] [Indexed: 11/30/2022]
Affiliation(s)
- M Sachdeva
- Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - M Kinoshita-Ise
- Division of Dermatology, Department of Medicine, Sunnybrook Health Sciences Centre, Toronto, ON, Canada.,Department of Dermatology, Kyorin University School of Medicine, Tokyo, Japan
| | - N H Shear
- Division of Dermatology, Department of Medicine, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
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6
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Gupta AK, Stec N, Bamimore MA, Foley KA, Shear NH, Piguet V. The efficacy and safety of pulse vs. continuous therapy for dermatophyte toenail onychomycosis. J Eur Acad Dermatol Venereol 2019; 34:580-588. [PMID: 31746067 DOI: 10.1111/jdv.16101] [Citation(s) in RCA: 7] [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] [Received: 07/17/2019] [Accepted: 11/11/2019] [Indexed: 12/12/2022]
Abstract
BACKGROUND Onychomycosis is a chronic, fungal infection of the nails. Complete cure remains challenging, but oral antifungal medications have been successful in managing the fungus for a significant proportion of patients. Treatment with these drugs can be continuous or intermittent, albeit the evidence on their relative efficacies remains unclear. OBJECTIVE To determine the relative effectiveness and safety of pulse versus continuous administration, of three common oral therapies for dermatophyte onychomycosis, by conducting multiple-treatment meta-analysis. METHODS This systematic review and network meta-analysis compared the efficacy (as per mycological cure) and adverse event rates of three oral antifungal medications in the treatment of dermatophyte toenail onychomycosis, namely terbinafine, itraconazole and fluconazole. A total of 30 studies were included in the systematic review, while 22 were included in the network meta-analysis. RESULTS The likelihood of mycological cure was not significantly different between continuous and pulse regimens for each of terbinafine and itraconazole. Use of continuous terbinafine for 24 weeks - but not 12 weeks - was significantly more likely to result in mycological cure than continuous itraconazole for 12 weeks or weekly fluconazole for 9-12 months. Rank probabilities demonstrated that 24-week continuous treatment of terbinafine was the most effective. There were no significant differences in the likelihood of adverse events between any continuous and pulse regimens of terbinafine, itraconazole and fluconazole. Drug treatments were similar to placebo in terms of their likelihood of producing adverse events. CONCLUSION More knowledge about the fungal life cycle and drugs' pharmacokinetics in nail and plasma could further explain the relative efficacy and safety of the pulse and continuous treatment regimens. Our results indicate that in the treatment of dermatophyte toenail onychomycosis, the continuous and pulse regimens for terbinafine and itraconazole have similar efficacies and rates of adverse events.
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Affiliation(s)
- A K Gupta
- Mediprobe Research Inc., London, ON, Canada
- Division of Dermatology, Department of Medicine, University of Toronto School of Medicine, Toronto, ON, Canada
| | - N Stec
- Mediprobe Research Inc., London, ON, Canada
| | | | - K A Foley
- Mediprobe Research Inc., London, ON, Canada
| | - N H Shear
- Division of Dermatology, Department of Medicine, University of Toronto School of Medicine, Toronto, ON, Canada
- Division of Dermatology, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - V Piguet
- Division of Dermatology, Department of Medicine, University of Toronto School of Medicine, Toronto, ON, Canada
- Division of Dermatology, Women's College Hospital, Toronto, ON, Canada
- Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, UK
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7
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Martinez-Cabriales SA, Walsh S, Sade S, Shear NH. Lymphomatoid papulosis: an update and review. J Eur Acad Dermatol Venereol 2019; 34:59-73. [PMID: 31494989 DOI: 10.1111/jdv.15931] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 08/08/2019] [Indexed: 12/13/2022]
Abstract
Lymphomatoid papulosis (LyP) is a benign chronic often relapsing skin condition that belongs to the CD30-positive cutaneous lymphoproliferative disorders. LyP typically presents as crops of lesions with a tendency to self-resolve, and morphology can range from solitary to agminated or diffuse papules and plaques to nodules or tumours. The clinical-histological spectrum can range from borderline cases to overlap with primary cutaneous anaplastic cell lymphoma (pcALCL). Histology and immunophenotype commonly show overlap with other CD30-positive disorders and sometimes may be identical to pcALCL, making its diagnosis more difficult. Patients with LyP have an increased risk of developing a second neoplasm such as mycosis fungoides, pcALCL and/or Hodgkin lymphoma. Clinical correlation allows its proper classification and diagnosis, which is fundamental for treatment and prognosis. This review focuses on the clinical appearance, histopathological features, diagnosis, differential diagnosis and management of LyP.
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Affiliation(s)
- S A Martinez-Cabriales
- Department of Medicine, University of Toronto, Toronto, ON, Canada.,Department of Dermatology, Sunnybrook Health Sciences Centre, Toronto, ON, Canada.,Department of Dermatology, Autonomous University of Nuevo Leon, San Nicolas de los Garza, Mexico
| | - S Walsh
- Department of Medicine, University of Toronto, Toronto, ON, Canada.,Department of Dermatology, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - S Sade
- Department of Pathology, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - N H Shear
- Department of Medicine, University of Toronto, Toronto, ON, Canada.,Department of Dermatology, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
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8
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Gupta AK, Versteeg SG, Shear NH. A practical application of onychomycosis cure - combining patient, physician and regulatory body perspectives. J Eur Acad Dermatol Venereol 2018; 33:281-287. [PMID: 30005134 DOI: 10.1111/jdv.15181] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 07/10/2018] [Indexed: 11/28/2022]
Abstract
Due to the high relapse rates and the rise of predisposing factors, the need for curing onychomycosis is paramount. To effectively address onychomycosis, the definition of cure used in a clinical setting should be agreed upon and applied homogeneously across therapies (e.g. oral, topical and laser treatments). In order to determine what is or what should be used to define cure in a clinical setting, a literature search was conducted to identify methods used to evaluate treatment success. The limitations, strengths, prevalence and utility of each outcome measure were investigated. Seven ways to measure treatment success were identified; mycological cure, patient/investigator assessments, complete cure, quality of life instruments, severity indexes, clinical cure and temporary clearance. Despite its shortcomings, mycological cure is the most objective and consistent outcome measure used across onychomycosis studies. It is suggested that diagnostic goals of onychomycosis should be used to define cure in a clinical setting. Modifications to outcome measures such as incorporating molecular-based techniques could be a future avenue to explore.
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Affiliation(s)
- A K Gupta
- Divison of Dermatology, Department of Medicine, University of Toronto School of Medicine, Toronto, ON, Canada.,Mediprobe Research Inc., London, ON, Canada
| | | | - N H Shear
- Department of Medicine (Dermatology, Clinical Pharmacology and Toxicology), Department of Pharmacology, Sunnybrook Health Science Centre and the University of Toronto, Toronto, ON, Canada
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9
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Gupta AK, Mays RR, Dotzert MS, Versteeg SG, Shear NH, Piguet V. Efficacy of non-surgical treatments for androgenetic alopecia: a systematic review and network meta-analysis. J Eur Acad Dermatol Venereol 2018; 32:2112-2125. [PMID: 29797431 DOI: 10.1111/jdv.15081] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 04/13/2018] [Indexed: 01/03/2023]
Abstract
Androgenetic alopecia, or male/female pattern baldness, is the most common type of progressive hair loss disorder. The aim of this study was to review recent advances in non-surgical treatments for androgenetic alopecia and identify the most effective treatments. A network meta-analysis (NMA) was conducted of the available literature of the six most common non-surgical treatment options for treating androgenetic alopecia in both men and women; dutasteride 0.5 mg, finasteride 1 mg, low-level laser therapy (LLLT), minoxidil 2%, minoxidil 5% and platelet-rich plasma (PRP). Seventy-eight studies met the inclusion criteria, and 22 studies had the data necessary for a network meta-analysis. Relative effects show LLLT as the superior treatment. Relative effects show PRP, finasteride 1 mg (male), finasteride 1 mg (female), minoxidil 5%, minoxidil 2% and dutasteride (male) are approximately equivalent in mean change hair count following treatment. Minoxidil 5% and minoxidil 2% reported the most drug-related adverse events (n = 45 and n = 23, respectively). The quality of evidence of minoxidil 2% vs. minoxidil 5% was high; minoxidil 5% vs. placebo was moderate; dutasteride (male) vs. placebo, finasteride (female) vs. placebo, minoxidil 2% vs. placebo and minoxidil 5% vs. LLLT was low; and finasteride (male) vs. placebo, LLLT vs. sham, PRP vs. placebo and finasteride vs. minoxidil 2% was very low. Results of this NMA indicate the emergence of novel, non-hormonal therapies as effective treatments for hair loss; however, the quality of evidence is generally low. High-quality randomized controlled trials and head-to-head trials are required to support these findings and aid in the development of more standardized protocols, particularly for PRP. Regardless, this analysis may aid physicians in clinical decision-making and highlight the variety of non-surgical hair restoration options for patients.
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Affiliation(s)
- A K Gupta
- Mediprobe Research Inc., London, Canada.,Division of Dermatology, Department of Medicine, University of Toronto, Toronto, Canada
| | - R R Mays
- Mediprobe Research Inc., London, Canada
| | | | | | - N H Shear
- Division of Dermatology, Department of Medicine, University of Toronto, Toronto, Canada.,Division of Dermatology, Sunnybrook Health Sciences Centre, Toronto, Canada
| | - V Piguet
- Division of Dermatology, Department of Medicine, University of Toronto, Toronto, Canada.,Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom.,Division of Dermatology, Women's College Hospital, Toronto, Canada
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10
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Kuehl B, Shear NH. The Evolution of Topical Formulations in Psoriasis. Skin Therapy Lett 2018; 23:5-9. [PMID: 30086183] [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] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Most people with mild-to-moderate psoriasis manage their disease with topical therapies. However, adherence to topical treatment remains a challenge, as the daily application creates a significant treatment burden. New topical therapeutic options need to offer higher efficacy and better patient acceptability, including easier application, to reduce treatment burden and enhance patient adherence. Topical foam vehicles are innovative alternatives to creams and ointments, addressing many patient challenges with traditional vehicles. Well-designed foam vehicles are easily spread over large areas of the skin, while importantly not leaving a greasy or oily film on the skin after application. Calcipotriol/betamethasone diproprionate aerosol foam is a new psoriasis treatment option that is rapidly effective, offers greater efficacy versus ointment and gel formulations, and has been shown to increase patient treatment satisfaction. Hence, by addressing the several crucial unmet clinical needs in patients with mild-to-moderate psoriasis, this optimized foam formulation is poised to improve treatment follow-through.
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Affiliation(s)
- B Kuehl
- Scientific Insights Consulting Group Inc., Mississauga, ON, Canada
| | - N H Shear
- Sunnybrook Health Sciences Centre, Toronto, ON, Canada; University of Toronto, Toronto, ON, Canada
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11
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Bawazir MA, Almohideb M, Walsh S, Shear NH, Alhusayen R. Early-stage mycosis fungoides screening investigations: a retrospective analysis of 440 cases. J Eur Acad Dermatol Venereol 2017; 32:e217-e218. [PMID: 29220538 DOI: 10.1111/jdv.14735] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- M A Bawazir
- Division of Dermatology, Department of Medicine, University of Toronto, 2075 Bayview Ave, Toronto, ON M4N 3M5, Canada
| | - M Almohideb
- Division of Dermatology, Department of Medicine, University of Toronto, 2075 Bayview Ave, Toronto, ON M4N 3M5, Canada
| | - S Walsh
- Division of Dermatology, Department of Medicine, University of Toronto, 2075 Bayview Ave, Toronto, ON M4N 3M5, Canada
| | - N H Shear
- Division of Dermatology, Department of Medicine, University of Toronto, 2075 Bayview Ave, Toronto, ON M4N 3M5, Canada
| | - R Alhusayen
- Division of Dermatology, Department of Medicine, University of Toronto, 2075 Bayview Ave, Toronto, ON M4N 3M5, Canada
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12
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Kanwar AJ, Vinay K, Sawatkar GU, Dogra S, Minz RW, Shear NH, Koga H, Ishii N, Hashimoto T. Clinical and immunological outcomes of high- and low-dose rituximab treatments in patients with pemphigus: a randomized, comparative, observer-blinded study. Br J Dermatol 2016; 170:1341-9. [PMID: 24640990 DOI: 10.1111/bjd.12972] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/11/2014] [Indexed: 10/25/2022]
Abstract
BACKGROUND Rituximab is a promising therapy in pemphigus. However, there is no consensus on optimum dose. OBJECTIVES To compare the efficacy, in terms of clinical and immunological outcomes in patients with pemphigus, of a high (2 × 1000 mg) vs. a low dose (2 × 500 mg) of rituximab. METHODS This was a randomized, observer-blinded trial wherein 22 patients with pemphigus were randomized into two treatment groups. Patients received either two doses (day 0 and day 15) of 1000 mg rituximab or 500 mg rituximab, and were followed up for 48 weeks. Clinical activity was assessed by a blinded investigator. Indices of enzyme-linked immunosorbent assays (ELISAs) for desmoglein (Dsg)1 and Dsg3, and CD19 cell count were examined at regular intervals. RESULTS There was no statistically significant difference in early and late clinical end points, and total cumulative dose of corticosteroids between the two groups. At week 40, the fall in Ikeda severity score was significantly more in the 2 × 1000 mg group than in 2 × 500 mg group (P = 0·049). Patients in the 2 × 500 mg group received a significantly higher cumulative dose of azathioprine (P = 0·018). The ELISA indices of Dsg1 and Dsg3 showed a statistically significant decline in the 2 × 1000 mg group only. B cell repopulation occurred earlier in the 2 × 500 mg group by 8 weeks. CONCLUSIONS A few clinical and immunological study parameters have suggested improved outcomes in patients receiving high-dose (2 × 1000 mg) rituximab.
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Affiliation(s)
- A J Kanwar
- Department of Dermatology, Venereology and Leprology
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13
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Shear NH, Hartmann M, Toledo-Bahena ME, Gilbert M, Katsambas A, Yao R, Popmihajlov Z. Health-related quality-of-life improvements during 98 weeks of infliximab therapy in patients with plaque-type psoriasis in real-world practice. Qual Life Res 2016; 25:2031-40. [DOI: 10.1007/s11136-015-1224-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/24/2015] [Indexed: 11/28/2022]
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14
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Heelan K, Hitzig SL, Knowles S, Drucker AM, Mittmann N, Walsh S, Shear NH. Loss of Work Productivity and Quality of Life in Patients With Autoimmune Bullous Dermatoses. J Cutan Med Surg 2015; 19:546-54. [DOI: 10.1177/1203475415582317] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background: Little is known about quality of life and work productivity in autoimmune bullous dermatoses (AIBDs). Objective: To determine the impact of AIBDs on quality of life and work productivity. Methods: An observational cross-sectional study took place between February and May 2013 at an AIBD tertiary referral centre. Ninety-four patients were included. All participants completed the Dermatology Life Quality Index and the Work Productivity and Activity Impairment–Specific Health Problem questionnaires. Results: Responders to treatment had less impairment ( P < .001) than nonresponders. Patients with severe AIBD had significantly more impairment that those with mild ( P < .001) and moderate ( P = .002) AIBD. Greater impairment was associated with higher percentage of work missed. Those with a higher Dermatology Life Quality Index score had greater work impairment and overall activity impairment ( P = .041, P = .024). Nonresponders had increased impairment while working ( P < .001), overall work impairment ( P < .001), and activity impairment ( P < .001). Severely affected patients had worse impairment in all Work Productivity and Activity Impairment Questionnaire domains. Conclusions: AIBD has the potential to be a large burden on ability to work and quality of life. Larger studies are needed to clarify how these domains change over time and whether or not they improve with treatment.
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Affiliation(s)
- K. Heelan
- Division of Dermatology, Department of Medicine, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON, Canada
| | - S. L. Hitzig
- Institute for Life Course and Aging, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - S. Knowles
- Division of Clinical Pharmacology and Toxicology, Department of Medicine, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON, Canada
- Department of Pharmacology, University of Toronto, Toronto, ON, Canada
| | - A. M. Drucker
- Division of Dermatology, University Health Network, Toronto, ON, Canada
| | - N. Mittmann
- Division of Clinical Pharmacology and Toxicology, Department of Medicine, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON, Canada
- Department of Pharmacology, University of Toronto, Toronto, ON, Canada
- Health Outcomes and PharmacoEconomics (HOPE) Research Centre, Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON, Canada
| | - S. Walsh
- Division of Dermatology, Department of Medicine, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON, Canada
| | - N. H. Shear
- Division of Dermatology, Department of Medicine, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON, Canada
- Division of Clinical Pharmacology and Toxicology, Department of Medicine, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON, Canada
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15
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Abstract
BACKGROUND Pemphigus is a rare autoimmune blistering disease, reported to be associated with other coexisting and autoimmune diseases, including thyroid diseases, rheumatoid arthritis, alopecia areata, vitiligo, systemic lupus erythematosus, scleroderma and rare entities such as myasthenia gravis. AIM To identify and describe patients with pemphigus with a diagnosed comorbidity, and to quantify the risk of additional comorbidities. METHODS This was a cross-sectional study of patients with pemphigus treated at a tertiary referral centre. Prevalence rates of 15 comorbid diseases were calculated. Age-standardized prevalence ratio (SPR) and 95% CI were calculated in comparison with prevalence rates in the general Canadian population using data from the Canadian Community Health Survey. Data were analysed using SAS software. RESULTS In total, 295 patients were identified. An increased risk of hypothyroidism (n = 38, SPR = 1.53, 95% CI 1.08-2.10) and inflammatory bowel disease (IBD) (SPR = 1.48, 95% CI 0.40-3.80), and a two-fold increased risk of diabetes (SPR = 2.20, 95% CI 1.64-2.87) were observed. CONCLUSIONS Patients with pemphigus have a higher incidence of hypothyroidism, IBD and diabetes compared with the general population. As part of pemphigus investigations and surveillance, investigating for these conditions may be considered.
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Affiliation(s)
- K Heelan
- Division of Dermatology, ON, Canada
| | - A L Mahar
- Department of Public Health Sciences, Queen's University , Kingston, ON, Canada
| | - S Walsh
- Division of Dermatology, ON, Canada
| | - N H Shear
- Division of Dermatology, ON, Canada.,Division of Clinical Pharmacology and Toxicology at Sunnybrook, Department of Medicine, Sunnybrook Health Sciences Centre, University of Toronto, ON, Canada
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16
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Shear NH, Hartmann M, Toledo-Bahena M, Katsambas A, Connors L, Chang Q, Yao R, Nograles K, Popmihajlov Z. Long-term efficacy and safety of infliximab maintenance therapy in patients with plaque-type psoriasis in real-world practice. Br J Dermatol 2014; 171:631-41. [PMID: 24673357 DOI: 10.1111/bjd.13004] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/24/2014] [Indexed: 11/26/2022]
Abstract
BACKGROUND Tumour necrosis factor-α inhibitors, including infliximab (IFX), can improve disease control of plaque-type psoriasis. OBJECTIVES The Real-World Assessment of Long-Term Infliximab Therapy for Psoriasis (REALITY) study evaluated the efficacy and safety of maintenance IFX therapy in typical clinical settings. METHODS In this prospective, observational, open-label, multicentre study in patients with plaque-type psoriasis, IFX 5 mg kg was infused at weeks 0, 2 and 6, and every 8 weeks thereafter during a 50-week treatment phase. The primary outcome was ≥ 75% Psoriasis Area and Severity Index (PASI) improvement from baseline to week 50. Patients with ≥ 25% PASI improvement from baseline to the end of the treatment phase were potentially eligible to enter a 48-week extended treatment phase. Response maintenance and other efficacy measures were evaluated. Adverse events (AEs) were collected. RESULTS In total 660 patients enrolled. Of 521 efficacy-evaluable treatment phase patients (66% male, mean age 46·5 years, mean PASI 18·1), 56·8% achieved PASI 75 at the end of the treatment phase. Response was maintained at week 50 by 64·7% (205/317) of patients who achieved PASI 75 at week 14. During extended treatment, 66·3% (112/169) of patients attained PASI 75 at week 98; response was maintained at week 98 by 71·6% (101/141) of those who achieved PASI 75 at week 50. IFX was generally well tolerated. During treatment, 7·6% (50/659) of patients had serious AEs. During extended treatment, 4·1% (eight of 193) of patients had serious AEs. CONCLUSIONS PASI 75 response was achieved by 56·8% and 66·3% of patients at weeks 50 and 98, respectively. The AE pattern was consistent with previous reports.
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Affiliation(s)
- N H Shear
- University of Toronto and Sunnybrook Health Sciences Centre, 2075 Bayview Ave. Room M1-737, Toronto, ON, Canada, M4N 3M5
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17
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Guha RA, Shear NH, Papini M. Ballistic impact of single particles into gelatin: experiments and modeling with application to transdermal pharmaceutical delivery. J Biomech Eng 2011; 132:101003. [PMID: 20887013 DOI: 10.1115/1.4002428] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The impact and penetration of high speed particles with the human skin is of interest for targeted drug delivery by transdermal powder injection. However, it is often difficult to perform penetration experiments on dermal tissue using micron scale particles. To address this, a finite element model of the impact and penetration of a 2 μm gold particle into the human dermis was developed and calibrated using experiments found in the literature. Using dimensional analysis, the model was linked to a larger scale steel ball-gelatin system in order to extract key material parameters for both systems and perform impact studies. In this manner, an elastic modulus of 2.25 MPa was found for skin, in good agreement with reported values from the literature. Further gelatin experiments were performed with steel, polymethyl methacrylate, titanium, and tungsten carbide balls in order to determine the effects of particle size and density on penetration depth. Both the finite element model and the steel-gelatin experiments were able to predict the penetration behavior that was found by other investigators in the study of the impact of typical particles used for vaccine delivery into the human dermis. It can therefore be concluded that scaled up systems utilizing ballistic gelatins can be used to investigate the performance of transdermal powder injection technology.
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Affiliation(s)
- R A Guha
- Department of Mechanical and Industrial Engineering, Ryerson University, 350 Victoria St., Toronto, ON, Canada
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Gupta AK, Maddin S, Arlette J, Giroux JM, Shear NH. Itraconazole pulse therapy is effective in dermatophyte onychomycosis of the toenail: a double-blind placebo-controlled study. J DERMATOL TREAT 2009. [DOI: 10.1080/09546630050517658] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [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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Luger TA, Cambazard F, Larsen FG, Bourcier M, Gupta G, Clonier F, Kidson P, Shear NH. A study of the safety and efficacy of calcipotriol and betamethasone dipropionate scalp formulation in the long-term management of scalp psoriasis. Dermatology 2008; 217:321-8. [PMID: 18787325 DOI: 10.1159/000155642] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2008] [Accepted: 07/11/2008] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Effective and safe products are needed for long-term management of scalp psoriasis. This study investigated the long-term safety and efficacy of a two-compound formulation (calcipotriol 50 microg/g plus betamethasone dipropionate 0.5 mg/g) for scalp psoriasis. METHODS In this 52-week, international, double-blind study, 869 patients with moderate-to-severe scalp psoriasis were randomized to either a two-compound scalp formulation (n = 429) or calcipotriol (n = 440). RESULTS Adverse drug reactions were less frequent in the two-compound group compared with the calcipotriol group (17.2 vs. 29.5%; p < 0.001). Incidences of adverse events possibly associated with long-term corticosteroid use were low in both the two-compound (2.6%) and the calcipotriol (3.0%) groups. Disease was satisfactorily controlled in 92.3% of visits in the two-compound group versus 80.0% in the calcipotriol group (p < 0.001). CONCLUSION The two-compound scalp formulation demonstrated a high level of safety and efficacy in long-term management of scalp psoriasis.
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Affiliation(s)
- T A Luger
- Department of Dermatology, University Clinic Münster, Münster, Germany.
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20
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Papp K, Bissonnette R, Rosoph L, Wasel N, Lynde CW, Searles G, Shear NH, Huizinga RB, Maksymowych WP. Efficacy of ISA247 in plaque psoriasis: a randomised, multicentre, double-blind, placebo-controlled phase III study. Lancet 2008; 371:1337-42. [PMID: 18424323 DOI: 10.1016/s0140-6736(08)60593-0] [Citation(s) in RCA: 54] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND The use of systemic calcineurin inhibitors for the treatment of patients with psoriasis is limited by toxicity, particularly nephrotoxicity. ISA247, a novel inhibitor, was effective and well tolerated in a phase II study of patients with plaque psoriasis. Therefore its efficacy was assessed in this phase III study. METHODS 451 patients aged 18-65 years with plaque psoriasis involving at least 10% of the body surface area were randomly assigned in equal proportions to receive placebo or ISA247 at 0.2 mg/kg, 0.3 mg/kg, or 0.4 mg/kg orally twice a day in dermatology clinics. The primary endpoint was a 75% reduction in the psoriasis area and severity index (PASI 75) score at week 12. Treatment allocation was concealed from patient and physicians doing the assessments by use of sealed envelopes. The method of analysis was by modified intention to treat. The trial is registered at ClinicalTrials.gov, number NCT00244842. FINDINGS 107, 113, and 116 patients were assigned to the ISA247 0.2 mg/kg, 0.3 mg/kg, and 0.4 mg/kg groups, respectively, and 115 to the placebo group. At week 12, PASI 75 scores were achieved in the ISA247 0.2 mg/kg, 0.3 mg/kg, and 0.4 mg/kg groups by 14 (16%; 95% CI 9-24) of 105, 26 (25%; 17-24) of 111, and 44 (47%; 27-57) of 113 patients, respectively, and in the placebo group by 4 (4%; 0-8) of 113 patients. Efficacy was maintained during 24 weeks. Mild to moderate glomerular filtration rate reductions were noted in seven patients in the ISA247 0.4 mg/kg group and in one in the ISA247 0.3 mg/kg group. ISA247 blood concentrations showed a strong correlation with mean percentage reduction in PASI. INTERPRETATION ISA247 was safe and effective in the treatment of patients with moderate to severe psoriasis during 24 weeks, with the highest dose providing the best efficacy. The strong correlation between ISA247 concentrations and efficacy might allow for accurate dosing of patients compared with existing calcineurin inhibitors.
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Affiliation(s)
- K Papp
- Probity Medical Research, Waterloo, ON, Canada.
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21
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Tohyama M, Hashimoto K, Yasukawa M, Kimura H, Horikawa T, Nakajima K, Urano Y, Matsumoto K, Iijima M, Shear NH. Association of human herpesvirus 6 reactivation with the flaring and severity of drug-induced hypersensitivity syndrome. Br J Dermatol 2007; 157:934-40. [PMID: 17854362 DOI: 10.1111/j.1365-2133.2007.08167.x] [Citation(s) in RCA: 242] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND Drug-induced hypersensitivity syndrome (DIHS) is an adverse reaction with clinical signs of fever, rash and internal organ involvement. In the vast majority of patients in Japan, the causative drugs for DIHS are limited to the following eight: carbamazepine, phenytoin, phenobarbital, zonisamide, mexiletine, dapsone, salazosulfapyridine and allopurinol. The association of human herpesvirus (HHV)-6 reactivation with DIHS has been reported by various groups. OBJECTIVES To confirm the relationship between the flaring and severity of DIHS and HHV-6 reactivation. METHODS We evaluated 100 patients with drug rash and systemic symptom(s) caused by the drugs associated with DIHS. HHV-6 reactivation was examined by serological antibody assay and quantitative real-time polymerase chain reaction assay of serial serum samples. RESULTS Anti-HHV-6 IgG titres increased in 62 of 100 patients, 14-28 days after the onset of symptoms. These patients suffered from severe organ involvement and a prolonged course compared with 38 patients showing no reactivation of HHV-6. Significant amounts of HHV-6 DNA were detected in serum samples from 18 of the 62 patients. Flaring of symptoms such as fever and hepatitis was closely related to HHV-6 reactivation in these 18 patients. It should be emphasized that all five patients with fatal outcome and 10 patients with renal failure were in the HHV-6 reactivation group. CONCLUSIONS A combination of immunological reaction to a drug and HHV-6 reactivation results in the severe course of DIHS. The demonstration of HHV-6 reactivation is a useful marker of diagnosis as well as prognosis in DIHS.
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Affiliation(s)
- M Tohyama
- Department of Dermatology, Ehime University School of Medicine, Toon-city, Ehime 791-0295, Japan.
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22
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Mittmann N, Chan BC, Knowles S, Shear NH. IVIG for the treatment of toxic epidermal necrolysis. Skin Therapy Lett 2007; 12:7-9. [PMID: 17361314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Intravenous immunoglobulin (IVIG) has been proposed as a treatment for toxic epidermal necrolysis (TEN) and Stevens-Johnson Syndrome (SJS). A number of retrospective and prospective studies have been conducted, with varying levels of evidence for the efficacy of IVIG. Recent publications provide opposing conclusions. A multi-center, comparative, long-term analysis needs to be conducted to determine the role of IVIG in the management of patients with SJS/TEN.
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Affiliation(s)
- N Mittmann
- Division of Clinical Pharmacology, University of Toronto, Ontario, Canada
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23
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Dubertret L, Sterry W, Bos JD, Chimenti S, Shumack S, Larsen CG, Shear NH, Papp KA. CLinical experience acquired with the efalizumab (Raptiva®
) (CLEAR) trial in patients with moderate-to-severe plaque psoriasis: results from a phase III international randomized, placebo-controlled trial. Br J Dermatol 2006; 155:170-81. [PMID: 16792770 DOI: 10.1111/j.1365-2133.2006.07344.x] [Citation(s) in RCA: 119] [Impact Index Per Article: 6.6] [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: 11/27/2022]
Abstract
BACKGROUND Efalizumab (anti-CD11a), a humanized monoclonal antibody, blocks multiple T-cell-dependent functions implicated in the pathogenesis of psoriasis, including T-cell activation, migration to the skin, reactivation in psoriatic skin and interactions with keratinocytes. OBJECTIVES This multinational, randomized, double-blind, placebo-controlled, parallel-group trial was designed to evaluate the safety and efficacy of subcutaneous efalizumab 1.0 mg kg-1 once weekly for 12 weeks compared with placebo in a population that included high-need patients, defined as those for whom at least two systemic therapies were unsuitable because of lack of efficacy, intolerance or contraindication. PATIENTS/METHODS Patients with moderate-to-severe plaque psoriasis [involvement of >or=10% of total body surface area and Psoriasis Area and Severity Index (PASI)>or=12.0 at screening] were randomized in a 2:1 ratio to receive efalizumab or placebo. The primary efficacy endpoint was the proportion of patients achieving >or=75% PASI improvement (PASI-75 response) at week 12 in the intention-to-treat population; secondary endpoints included changes in PASI, static Physician's Global Assessment, Physician's Global Assessment of change from baseline and percentage of body surface area affected. Results We enrolled 793 patients (529 received efalizumab and 264 placebo), including 526 high-need patients (342 received efalizumab and 184 placebo). Week 12 PASI-75 rates were 29.5% for efalizumab compared with 2.7% for placebo among high-need patients (P<0.0001) and 31.4% for efalizumab compared with 4.2% for placebo in the full study population (P<0.0001). RESULTS for all secondary efficacy endpoints showed superiority of efalizumab over placebo in both the high-need and the full populations. Efalizumab demonstrated a favourable safety profile, without evidence of systemic toxicity, in both the high-need group and the overall study population. CONCLUSIONS The efficacy and safety of efalizumab therapy were comparable between high-need patients and the more general moderate-to-severe psoriasis patient population. In view of its demonstrated efficacy and safety profile, efalizumab represents a valuable option for the treatment of adult patients with moderate-to-severe plaque psoriasis, including high-need patients.
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Affiliation(s)
- L Dubertret
- Hôpital Saint Louis, Paris, France, and University Hospital Charite, Berlin, Germany.
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Mydlarski PR, Mittmann N, Shear NH. Intravenous immunoglobulin: use in dermatology. Skin Therapy Lett 2004; 9:1-6. [PMID: 15146260] [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: 04/29/2023]
Abstract
A manufactured blood product derived from fractionated human plasma, intravenous immunoglobulin (i.v.Ig) contains supra-physiologic levels of IgG. i.v.Ig is currently used in the treatment of immunodeficiency syndromes, inflammatory disorders and infections diseases. Uncontrolled clinical studies and anecdotal case reports recommend its use in dermatology, but randomized clinical trials are lacking. In selecting the most appropriate i.v.Ig for the patient, convenience, efficacy, safety and tolerability of the different products should be considered. With several measures in place to ensure its safety, i.v.Ig offers new hope for the treatment of many severe dermatologic conditions.
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Affiliation(s)
- P R Mydlarski
- Division of Dermatology, Department of Medicine, University of Toronto, Toronto, ON, Canada
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25
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Kuehl BL, Fyfe KS, Shear NH. Cutaneous cleansers. Skin Therapy Lett 2003; 8:1-4. [PMID: 12858234] [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: 03/03/2023]
Abstract
Skin cleansers may be an important adjunct to the regimen of those who use cosmetics, have sensitive or compromised skin, or utilize topical therapies. Cleansers emulsify dirt, oil and microorganisms on the skin surface so that they can be easily removed. During cleansing, there is a complex interaction between the cleanser, the moisture skin barrier, and skin pH. Cleansing, with water soap or a liquid cleanser, will affect the moisture skin barrier. Soap will bring about the greatest changes to the barrier and increase skin pH. Liquid facial cleansers are gentler, effecting less disruption of the barrier, with minimal change to skin pH, and can provide people with a cleanser that is a combination of surfactant classes, moisturizers and acidic pH in order to minimize disruption to the skin barrier.
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Affiliation(s)
- B L Kuehl
- Department of Medicine, University of Toronto Medical School, Ontario, Canada
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26
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Neuman MG, Benhamou JP, Malkiewicz IM, Ibrahim A, Valla DC, Martinot-Peignoux M, Asselah T, Bourliere M, Katz GG, Shear NH, Marcellin P. Kinetics of serum cytokines reflect changes in the severity of chronic hepatitis C presenting minimal fibrosis. J Viral Hepat 2002. [PMID: 11876796 DOI: 10.1046/j.1365-2893.2002.00343] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Our aims were to measure the kinetics of serum tumour necrosis alpha (TNF-alpha) and transforming growth factor beta (TGF-beta) levels as markers of progression of disease in nontreated chronic hepatitis C virus (HCV)-infected patients with minimal or no fibrosis and minimal histology activity index (HAI) scores. Our study group consisted of 56 patients diagnosed with minimal (1) or no fibrosis (0) and minimal HAI (0-1) on their first biopsy as defined by Knodell and METAVIR scores. We compared their initial (entry of study) cytokine levels with a group of 103 HCV controls with minimal (0-1) to mild fibrosis (0-3) and mild HAI (5.5). Serum TNF-alpha and TGF-beta levels were measured by enzyme-linked-immunosorbent-assay. A significant difference was seen in TNF-alpha levels at baseline in the study group vs. controls. Regardless of their HAI, there was a correlation between TGF-beta and degree of fibrosis. As shown by their biopsies, during the 3 years (from entry to follow up), many of the patients that initially had minimal fibrosis progressed to higher degree of fibrosis. This progression is paralleled by an increase in TGF-beta levels when comparing initial and follow-up levels. In conclusion, serum TNF-alpha reflects the progression of inflammation as seen in liver biopsies and TGF-beta reflects the degree of fibrosis in HCV patients.
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Affiliation(s)
- Manuela G Neuman
- Division of Clinical Pharmacology, Sunnybrook and Women's College Health Sciences Centre, University of Toronto, 2075 Bayview Avenue, Toronto, Ontario, M4N 3M5, Canada.
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27
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Neuman MG, Benhamou JP, Malkiewicz IM, Ibrahim A, Valla DC, Martinot-Peignoux M, Asselah T, Bourliere M, Katz GG, Shear NH, Marcellin P. Kinetics of serum cytokines reflect changes in the severity of chronic hepatitis C presenting minimal fibrosis. J Viral Hepat 2002; 9:134-40. [PMID: 11876796 DOI: 10.1046/j.1365-2893.2002.00343.x] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
Our aims were to measure the kinetics of serum tumour necrosis alpha (TNF-alpha) and transforming growth factor beta (TGF-beta) levels as markers of progression of disease in nontreated chronic hepatitis C virus (HCV)-infected patients with minimal or no fibrosis and minimal histology activity index (HAI) scores. Our study group consisted of 56 patients diagnosed with minimal (1) or no fibrosis (0) and minimal HAI (0-1) on their first biopsy as defined by Knodell and METAVIR scores. We compared their initial (entry of study) cytokine levels with a group of 103 HCV controls with minimal (0-1) to mild fibrosis (0-3) and mild HAI (5.5). Serum TNF-alpha and TGF-beta levels were measured by enzyme-linked-immunosorbent-assay. A significant difference was seen in TNF-alpha levels at baseline in the study group vs. controls. Regardless of their HAI, there was a correlation between TGF-beta and degree of fibrosis. As shown by their biopsies, during the 3 years (from entry to follow up), many of the patients that initially had minimal fibrosis progressed to higher degree of fibrosis. This progression is paralleled by an increase in TGF-beta levels when comparing initial and follow-up levels. In conclusion, serum TNF-alpha reflects the progression of inflammation as seen in liver biopsies and TGF-beta reflects the degree of fibrosis in HCV patients.
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Affiliation(s)
- Manuela G Neuman
- Division of Clinical Pharmacology, Sunnybrook and Women's College Health Sciences Centre, University of Toronto, 2075 Bayview Avenue, Toronto, Ontario, M4N 3M5, Canada.
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Shear NH. The science of health technology assessment: the safety perspective. Can J Clin Pharmacol 2002; 8 Suppl A:24A-28A. [PMID: 11586375] [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: 02/21/2023]
Abstract
Efforts to enhance the reporting and analysis of drug reactions have increased over recent years. Research into the pathogenesis, diagnosis and epidemiology has yielded important insights, yet major gaps in our management of drug safety still exist. Drug-induced diseases are an important cause of morbidity and mortality. Current ad hoc reporting systems fail to collect more than 10% of even the most serious of reactions. Drug reaction syndromes lack universally accepted definitions and names. Effective therapies for drug-induced diseases are few and poorly studied. Information about how to diagnose and treat drug-induced diseases is not reaching practitioners. Stakeholders, including regulatory agencies, funding agencies, the pharmaceutical industry, physicians, pharmacists and patient advocacy groups, need to work together to improve the systematic approach to drug safety and to make all stakeholders aware of advances in the technology surrounding drug-induced disease. The technology is available to make major strides in improving the overall management of drug-induced disease. The major barrier to progress is the lack of leadership from any of the powerful sectors involved in drug use.
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Affiliation(s)
- N H Shear
- Sunnybrook & Women's College Health Sciences Centre, University of Toronto Medical School, Toronto, Ontario, Canada.
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Papp K, Bissonnette R, Krueger JG, Carey W, Gratton D, Gulliver WP, Lui H, Lynde CW, Magee A, Minier D, Ouellet JP, Patel P, Shapiro J, Shear NH, Kramer S, Walicke P, Bauer R, Dedrick RL, Kim SS, White M, Garovoy MR. The treatment of moderate to severe psoriasis with a new anti-CD11a monoclonal antibody. J Am Acad Dermatol 2001; 45:665-74. [PMID: 11606914 DOI: 10.1067/mjd.2001.117850] [Citation(s) in RCA: 131] [Impact Index Per Article: 5.7] [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
BACKGROUND Anti-CD11a (hu1124) is a humanized monoclonal antibody directed against the CD11a subunit of LFA-1. This study investigated whether treatment with anti-CD11a antibody provides clinical benefit to patients with moderate to severe plaque psoriasis. METHODS This was a double-blind, placebo-controlled, phase II, multicenter study. In total, 145 patients with minimum Psoriasis Area and Severity Index scores of 12 and affected body surface area of 10% or more were sequentially enrolled into low-dose (0.1 mg/kg, n = 22) or high-dose (0.3 mg/kg, n = 75) groups. Within groups, patients were randomized to treatment or placebo (n = 48) in a 2:1 ratio. Drug was administered intravenously at weekly intervals for 8 weeks. RESULTS The percentage of subjects achieving more than 50% improvement in physician's global assessment at day 56 (1 week after final dose) was 15% and 48% for placebo and 0.3 mg/kg of drug, respectively (P =.002). A physician's global assessment of excellent (>75% improvement) was greater in the 0.3 mg/kg group versus placebo (25% vs 2%, P =.0003). Average Psoriasis Area and Severity Index scores at day 56 were 13.9 +/- 7.5 (placebo) and 10.9 +/- 8.4 (0.3 mg/kg) (P <.0001). Epidermal thickness was reduced in the 0.3 mg/kg group compared with the placebo group (37% vs 19%, P =.004). Treatment was well tolerated; mild to moderate flu-like complaints were the most common adverse events. White blood cell counts and lymphocyte counts transiently increased. Depletion of circulating lymphocytes did not occur. CONCLUSIONS Anti-CD11a antibody administered intravenously in 8 weekly doses of 0.3 mg/kg was well tolerated and induced clinical and histologic improvements in psoriasis.
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Affiliation(s)
- K Papp
- Probity Medical Research, 30 Union St. East, Waterloo, Ontario N2J 1B7, Canada.
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30
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Affiliation(s)
- L E Shapiro
- Division of Clinical Pharmacology, Department of Medicine, Sunnybrook & Women's College Health Sciences Centre, the University of Toronto, Ontario, Canada
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31
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Affiliation(s)
- M H Lowitt
- Department of Dermatology, University of Maryland School of Medicine, 405 W Redwood St, Sixth Floor, Baltimore, MD 21201, USA
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Abstract
Celecoxib, a selective cyclo-oxygenase-2 inhibitor, is a diaryl-substituted pyrazole derivative containing a sulfonamide substituent. Because of this structural component, celecoxib is contraindicated for use in patients who have demonstrated allergic reactions to sulfonamides. However, there is a lack of data demonstrating cross-reactivity among sulfonamide medications. A sulfonamide is any compound with an SO2NH2 moiety. The major difference between sulfonamide antimicrobials and other sulfonamide-containing medications such as furosemide, thiazide diuretics and celecoxib, is that sulfonamide antimicrobials contain an aromatic amine group at the N4 position. This allows for division of the sulfonamides into 2 groups: aromatic amines (i.e., sulfonamide antimicrobials) and nonaromatic amines. In addition, sulfonamide antimicrobials contain a substituted ring at the N1-position; this group is not found with nonaromatic amine-containing sulfonamides. Adverse reactions to sulfonamide antimicrobials include type I, or immunoglobulin (Ig) E-mediated reactions, hypersensitivity syndrome reactions, and severe skin reactions such as toxic epidermal necrolysis. The aromatic amine portion of the sulfonamide antimicrobial is considered to be critical in the development of latter 2 reactions. In susceptible individuals, the hydroxylamine metabolite is unable to be detoxified leading to a cascade of cytotoxic and immunological events that eventually results in the adverse reaction. Since celecoxib does not contain the aromatic amine, adverse reactions such as hypersensitivity syndrome reactions and toxic epidermal necrolysis would not be expected to occur at the same frequency as they do with sulfonamide antimicrobials. Similarly, for IgE-mediated reactions, the N1-substituent and not the sulphonamide moiety is important in determining specificity to antibodies. Celecoxib and other nonaromatic amine-containing sulfonamide medications do not contain the N1-substituent. Cross-reactivity among the various sulfonamide-containing medications has also not been substantiated by published case reports. In fact, conflicting information exists in the literature. Reports showing lack of cross-reactivity balance the few case reports suggesting cross-reactivity. Cross-reactivity between sulfonamide medications should be based on scientific data, including chemistry, metabolism, immune responses and clinical data. Based on the current information, there is no documentation for cross-reactivity between sulfonamide antimicrobials and other sulfonamide medications, such as celecoxib.
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Affiliation(s)
- S Knowles
- Clinical Pharmacology, Department of Medicine, Sunnybrook & Women's Health Sciences Centre, Toronto, Canada
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Shear NH. Q & A about this issue. Can J Clin Pharmacol 2001; 8:59. [PMID: 11493930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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Abstract
In the US, adverse drug reactions (ADRs) rank between the fourth to sixth leading cause of death, ahead of pneumonia and diabetes mellitus. An important reason for the high incidence of serious and fatal ADRs is that the existing drug development paradigms do not generate adequate information on the mechanistic sources of marked variability in pharmacokinetics and pharmacodynamics of new therapeutic candidates, precluding treatments from being tailored for individual patients. Pharmacogenetics is the study of the hereditary basis of person-to-person variations in drug response. The focus of pharmacogenetic investigations has traditionally been unusual and extreme drug responses resulting from a single gene effect. The Human Genome Project and recent advancements in molecular genetics now present an unprecedented opportunity to study all genes in the human genome, including genes for drug metabolism, drug targets and postreceptor second messenger machinery, in relation to variability in drug safety and efficacy. In addition to sequence variations in the genome, high throughput and genome-wide transcript profiling for differentially regulated mRNA species before and during drug treatment will serve as important tools to uncover novel mechanisms of drug action. Pharmacogenetic-guided drug discovery and development represent a departure from the conventional approach which markets drugs for broad patient populations, rather than smaller groups of patients in whom drugs may work more optimally. Pharmacogenetics provides a rational framework to minimise the uncertainty in outcome of drug therapy and clinical trials and thereby should significantly reduce the risk of drug toxicity.
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Affiliation(s)
- V Ozdemir
- Department of Pharmacology, University of Toronto, Ontario, Canada
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35
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Trakas K, Oh PI, Singh S, Risebrough N, Shear NH. The health status of obese individuals in Canada. Int J Obes (Lond) 2001; 25:662-8. [PMID: 11360148 DOI: 10.1038/sj.ijo.0801591] [Citation(s) in RCA: 49] [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] [Received: 03/31/2000] [Revised: 12/01/2000] [Accepted: 12/08/2000] [Indexed: 11/09/2022]
Abstract
OBJECTIVE To determine whether there is a clinically relevant difference in the health state utilities of obese and non-obese individuals as measured by the Health Utility Index Mark III. METHODS Secondary analysis of the population-based, cross-sectional, interviewer-administered National Population Health Survey (NPHS), 1996-1997. A probability sample of house-dwelling Canadians, excluding populations on First Nations Reserves, Canadian Armed Forces Bases, the Yukon and Northwest Territories, and long-term residents of hospitals or residential care facilities. The sub-sample used in this analysis consisted of 38 151 respondents (52.4% male) between the ages of 20 and 64 y, excluding pregnant women. Health Utilities Index-Mark III (HUI3) scores were used to define normal weight (body mass index (BMI) 19-24.9 kg/m(2)), overweight (BMI 25-29.9 kg/m(2)), obese (BMI 30-34.9 kg/m(2)), and morbidly obese (BMI> or =35 kg/m(2)) individuals. HUI3 scores were age- and gender-standardized. RESULTS The overall prevalence of obesity (BMI> or =30 kg/m(2)) in this Canadian population was 13.3%. The average difference in HUI3 scores between normal weight and morbidly obese respondents was 0.04 (P<0.001). Statistically significant (P<0.05) differences across BMI categories were found in each of the eight component attributes of the HUI3. The attributes with the most substantial difference between normal and obese patients were cognition, mobility and pain. All demonstrated a > or =2-fold increase in the proportion of individuals in poorer classifications of health when normal weight respondents were compared with the morbidly obese. The magnitude of the decrement in utility ratings associated with obesity was comparable with other chronic non-cardiovascular conditions such as migraine or colitis. CONCLUSION The results indicate that changes in self-rated health status appear to be due to significant changes across several relevant domain attributes. Obesity has a significant impact on both quality of life and health.
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Affiliation(s)
- K Trakas
- HOPE Research Centre, Sunnybrook and Women's College Health Sciences Centre, Toronto, Ontario, Canada.
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Abstract
OBJECTIVES To evaluate whether caspases are involved in ethanol (EtOH)-induced apoptosis and if polyenylphosphatidylcholine (PPC) affects apoptosis, in vitro in Hep G2 cells. METHODS Cells were treated with 100 mmol/L EtOH for 24 h and with 2 doses of 100 mmol/L EtOH (1/24 h) in the presence of absence of 20 mmol/L of PPC or 50 micromol/L caspase 3 inhibitor (IDN). Cells were analyzed for apoptosis by transmission electron microscopy (TEM) 6000 cells/treatment, DNA fragmentation by ELISA and terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate (T dt-mediated d-UTP) nick-end-labeling, TUNEL. RESULTS 100 mmol/L dose of EtOH resulted in 22 +/- 2.5% (p < 0.001) apoptosis (vs. control). Two consecutive doses of 100 mmol/L EtOH for 24 h each caused 36 +/- 3.0% (p < 0.001 vs. control and p < 0.05 vs. one dose). PPC significantly reduced apoptosis (vs. non exposed to PPC): 100 mmol/L -12 +/- 1.5% (p < 0.05) and 2 x 10(-)(0) mmol/L -20 +/- 2.0% (p < 0.001). Pretreatment with 50 micromol caspase inhibitor reduced EtOH-induced apoptosis in a similar proportion. CONCLUSIONS PPC downregulates EtOH-apoptosis by a mechanism similar to caspase inhibition.
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Affiliation(s)
- G G Katz
- Division of Clinical Pharmacology, Sunnybrook & Women's College Health Sciences Centre, Toronto, Canada
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Popat A, Shear NH, Malkiewicz I, Stewart MJ, Steenkamp V, Thomson S, Neuman MG. The toxicity of Callilepis laureola, a South African traditional herbal medicine. Clin Biochem 2001; 34:229-36. [PMID: 11408021 DOI: 10.1016/s0009-9120(01)00219-3] [Citation(s) in RCA: 72] [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: 11/25/2022]
Abstract
OBJECTIVES To review the literature on the toxicity of Callilepis laureola, and to assess the cytotoxicity of C. laureola in human hepatoblastoma Hep G2 cells in vitro. DESIGN AND METHODS Cells were incubated for up to 48 h in the presence of increasing concentrations of an aqueous extract of C. laureola (0.3-13.3 mg/mL). Cytotoxicity was quantitated spectrophotometrically by the metabolism of the tetrazolium dye MTT. Cytoviability of the control cells was considered to be 100%. RESULTS C. laureola produced cytotoxicity in a concentration-dependent manner. Cytotoxicity was significant at all concentrations tested (0.3-2.5 mg/mL, p < 0.05 vs. controls and 3.3-13.3 mg/mL, p < 0.0001 vs. controls). After 6 h, 100% toxicity was observed at a concentration of 6.7 mg/mL. CONCLUSION C. laureola causes significant cytotoxicity in Hep G2 cells in vitro. These findings are in accordance with the observed hepatotoxicity in clinical cases of C. laureola poisoning.
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Affiliation(s)
- A Popat
- Division of Clinical Pharmacology, E240, Sunnybrook and Women's College Health Sciences Centre, 2075 Bayview Avenue, Toronto, Ontario, Canada
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Neuman MG, Blendis LM, Shear NH, Malkiewicz IM, Ibrahim A, Katz GG, Sapir D, Halpern Z, Brill S, Peretz H, Magazinik S, Konikoff FM. Cytokine network in nonresponding chronic hepatitis C patients with genotype 1: role of triple therapy with interferon alpha, ribavirin, and ursodeoxycholate. Clin Biochem 2001; 34:183-8. [PMID: 11408015 DOI: 10.1016/s0009-9120(01)00213-2] [Citation(s) in RCA: 12] [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: 12/24/2022]
Abstract
OBJECTIVE (i) to characterize the profile of tumor necrosis factor alpha (TNF alpha), interleukin-6 (IL-6), IL 10, Fas-ligand and transforming growth factor beta (TGF beta), chronic hepatitis C (HCV) patients with genotype 1; (ii) to determine the influence of triple therapy (TT) with interferon alpha (IFN alpha) + ribavirin + ursodeoxycholic acid on these cytokines and (iii) to establish the relationship between the pro-inflammatory cytokines and the outcome of treatment. DESIGN AND METHODS 22 patients infected with HCV-genotype 1 a/b and non responsive to IFN-alpha monotherapy were enrolled in the TT. The controls were 49 HCV naïve patients with genotype 1 a/b. Cytokine levels were measured using enzyme-linked immunosorbent assay (ELISA). RESULTS The baseline TNF alpha values (pg/mL) in the sustained responders (SRs) (63+/-3) were significantly lower than non-responders (NRs) (140+/-16) (p < 0.001). Baseline Fas (ng/mL) levels were also lower in SRs (4.3+/-0.2) than NRs (5.4+/-0.4) (p < 0.05). CONCLUSIONS Fas and TNF alpha may be used as serological markers of inflammation and effectiveness of therapy.
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Affiliation(s)
- M G Neuman
- Division of Clinical Pharmacology, E-240, Sunnybrook & Women's College Health Sciences Centre, Department of Pharmacology and Medicine, University of Toronto, 2075 Bayview Avenue, Toronto, Ontario, M4N 3M5, Canada.
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Neuman MG, Benhamou JP, Malkiewicz IM, Akremi R, Shear NH, Asselah T, Ibrahim A, Boyer N, Martinot-Peignoux M, Jacobson-Brown P, Katz GG, Le Breton V, Le Guludec G, Suneja A, Marcellin P. Cytokines as predictors for sustained response and as markers for immunomodulation in patients with chronic hepatitis C. Clin Biochem 2001; 34:173-82. [PMID: 11408014 DOI: 10.1016/s0009-9120(01)00212-0] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
OBJECTIVES (i) To characterize serum cytokine levels of tumor necrosis factor alpha (TNF alpha), interleukin 6 (IL 6), IL 8 and IL 12 in non-cirrhotic patients with chronic hepatitis C, (ii) to correlate the levels of these cytokines with the degree of the disease at the basal level, (iii) to correlate these levels with the response to therapy, (iv) to compare profiles of cytokines in monotherapy (MT) versus combination therapy (CT), and (v) to compare the immunomodulatory effects of MT versus CT. DESIGN AND METHODS 47 patients were enrolled in the study. The controls were 120 volunteers (recruited from students and staff) that did not present HCV RNA positive and were not known to suffer any other metabolic disease. Thirty patients formed the other group of controls, with alcoholic liver disease (ALD). Serum cytokine levels were assessed using enzyme-linked immunosorbent assay (ELISA). RESULTS The sustained responders (SRs) have basal values much lower than relapsed responders (RRs) and non-responders (NRs) regardless of the therapy. CONCLUSIONS Cytokines can be used as non-invasive markers for sustained response and as monitors for the outcome of therapy.
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Affiliation(s)
- M G Neuman
- Division of Clinical Pharmacology, E-240, Sunnybrook and Women's Health Sciences Centre, Department of Pharmacology, University of Toronto, 2075 Bayview Avenue, Toronto, M4N 3M5, Canada.
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Neuman MG, Brenner DA, Rehermann B, Taieb J, Chollet-Martin S, Cohard M, Garaud JJ, Poynard T, Katz GG, Cameron RG, Shear NH, Gao B, Takamatsu M, Yamauchi M, Ohata M, Saito S, Maeyama S, Uchikoshi T, Toda G, Kumagi T, Akbar SMF, Abe M, Michitaka K, Horiike N, Onji M. Mechanisms of Alcoholic Liver Disease: Cytokines. Alcohol Clin Exp Res 2001. [DOI: 10.1111/j.1530-0277.2001.tb02404.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [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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Neuman MG, Shear NH, Jacobson-Brown PM, Katz GG, Neilson HK, Malkiewicz IM, Cameron RG, Abbott F. CYP2E1-mediated modulation of valproic acid-induced hepatocytotoxicity. Clin Biochem 2001; 34:211-8. [PMID: 11408019 DOI: 10.1016/s0009-9120(01)00217-x] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To determine the cytotoxicity of valproic acid (VPA) and its metabolite, 4-ene-valproic acid (4-ene-VPA) in human hepatoblastoma cells (Hep G2), and to study the modulatory effect of cytochrome P450 2E1 induction in this model. METHODS Cells were exposed to VPA or 4-ene-VPA in the presence of either ethanol (EtOH), or EtOH combined with disulphiram (DS). Some cells were exposed to alpha-fluoro-VPA or to alpha-fluoro-4-ene-VPA in the absence of CYP2E1 inducers. Apoptosis and necrosis were measured by analyzing 6000 cells per sample using transmission electron microscopy, while cytokine release and apoptosis were quantitated by ELISA. RESULTS VPA + EtOH increased VPA cytotoxicity. 4-ene-VPA + EtOH significantly increased toxicity, while DS + EtOH significantly reduced this toxicity. Alpha-fluorinated analogues reduced cytotoxicity compared to the corresponding VPA compounds. Neither VPA nor alpha-fluorinated VPA increased the release of IL-6 or TNF-alpha in media. A significant increase in the release of TNF-alpha was observed in cells exposed to 4-ene-VPA that further increased with EtOH exposure. CONCLUSIONS Cells exposed to 4-ene-VPA experience greater cytotoxicity than those treated with VPA. Cytochrome P450 2E1 inducers enhance toxicity in VPA-exposed cells, while alpha-fluorination of VPA diminishes cytotoxicity by directly interfering with the beta-oxidation of the 4-ene-VPA metabolite.
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Affiliation(s)
- M G Neuman
- Division of Clinical Pharmacology, Sunnybrook & Women's College Health Sciences Centre and Department of Pathology, Toronto Health Network, Canada.
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Neuman MG, Brenner DA, Rehermann B, Taieb J, Chollet-Martin S, Cohard M, Garaud JJ, Poynard T, Katz GG, Cameron RG, Shear NH, Gao B, Takamatsu M, Yamauchi M, Ohata M, Saito S, Maeyama S, Uchikoshi T, Toda G, Kumagi T, Akbar SM, Abe M, Michitaka K, Horiike N, Onji M. Mechanisms of alcoholic liver disease: cytokines. Alcohol Clin Exp Res 2001; 25:251S-253S. [PMID: 11391079 DOI: 10.1097/00000374-200105051-00040] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
This article represents the proceedings of a workshop at the 2000 ISBRA Meeting in Yokohama, Japan. The chair was Manuela G. Neuman. The presentations were (1) New aspects of hepatic fibrosis, by D. A. Brenner; (2) Cellular immune response in hepatitis C models, by B. Rehermann; (3) The role of interleukin-10 in acute alcoholic hepatitis, by J. Taieb, S. Chollet-Martin, M. Cohard, J. J. Garaud, and T. Poynard; (4) Cytokine-mediated apoptosis in vitro, by M. G. Neuman; (5) Signaling for apoptosis and repair in vitro, by G. G. Katz, R. G. Cameron, N. H. Shear, and M. G. Neuman; (6) Interferons activate the P42/44 mitogen-activated protein kinase and Janus Kinase signal transducers and activation of transcription (JAK-STAT) signaling pathways in hepatocytes: Differential regulation by acute ethanol via a protein kinase C-dependent mechanism, by B. Gao; (7) Genetic polymorphisms of interleukin-1 in association with the development of Japanese alcoholic liver disease, by M. Takamatsu, M. Yamauchi, M. Ohata, S. Saito, S. Maeyama, T. Uchikoshi, and G. Toda; and (8) Increased levels of macrophage migration inhibitory factor in sera from patients with alcoholic liver diseases, by T. Kumagi, S. M. F. Akbar, M. Abe, K. Michitaka, N. Horiike, and M. Onji.
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Affiliation(s)
- M G Neuman
- Sunnybrook and Women's College Health Sciences Centre, University of Toronto, Ontario, Canada.
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Trakas K, Shear NH. Serotonin syndrome risk with antiobesity drug. Can J Clin Pharmacol 2001; 7:216. [PMID: 11221780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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Sullivan JR, Shear NH. The drug hypersensitivity syndrome: what is the pathogenesis? Arch Dermatol 2001; 137:357-64. [PMID: 11255340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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Trakas K, Leiter L, Shear NH. Does drug therapy of obesity have a future? Can J Clin Pharmacol 2001; 7:133-4. [PMID: 11044757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
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Liu BA, Knowles SR, Mittmann N, Einarson T, Shear NH. Reporting of fatal adverse drug reactions. Can J Clin Pharmacol 2001; 8:84-8. [PMID: 11493936] [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: 04/16/2023]
Abstract
OBJECTIVES To review the reports of fatal adverse drug reactions (ADRs) submitted to the Ontario Medical Association Adverse Drug Reactions Monitoring Program between 1990 and 1994; to identify drugs associated with fatal outcomes; and to assess the causative role of the drug in these events and the completeness of the data in these reports. METHODS Drug(s) identified on each ADR report as being responsible for the reaction were considered. Agents were classified by the Anatomical Therapeutic and Chemical classification system. The causality of each ADR report was evaluated by using an algorithmic rating scale. RESULTS From the Ontario Medical Association database, 97 cases of ADRs that resulted in death were reviewed. One hundred fourteen medications were implicated as "suspect" drugs in the 97 deaths. The most commonly implicated drug classes were musculoskeletal agents, blood and blood-forming organ agents, and nervous system agents. Patients over 65 years of age comprised 60% of this series. After independent assessment as to causality, 13% of the cases were rated as probable, 86% were rated as possible and 1% were rated as doubtful. Seventy per cent of reports did not include information regarding medical history. Forty-two per cent of cases failed to provide adequate information to evaluate the feasibility of the time to onset of the ADR. The use of concomitant drugs was not reported in 12% of cases. CONCLUSIONS The drugs most frequently implicated in fatal ADRs were consistent with those reported in other studies. Algorithmic causality assessments were of limited value in these reports. The completeness of the reports and adequacy of the information were poor. The type of reporting forms and information provided were not homogenous. There is a need to improve quality of reporting and harmonize reporting forms between monitoring bodies. The feasibility of unique data collection forms and obligatory reporting for fatal ADRs should be considered.
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Affiliation(s)
- B A Liu
- Division of Geriatric Medicine and Clinical Pharmacology, Baycrest Centre for Geriatric Care, Toronto, Ontario, Canada.
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Abstract
Idiosyncratic drug reactions are unpredictable reactions that can result in significant morbidity and mortality. Severe reactions are often characterised by fever and internal organ involvement. Despite progress in the identification of reactive metabolites believed to be the cause of idiosyncratic reactions, the basic mechanisms remain elusive. Furthermore, because of the lack of consensus regarding definition of these syndromes, reporting, and therefore epidemiological data, are often unreliable. Research is needed to explore further the pathophysiology of these reactions, so that better diagnostic tests and treatment methods can be developed.
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Affiliation(s)
- S R Knowles
- Department of Medicine, Sunnybrook & Women's College Health Sciences Centre, University of Toronto, Ontario, Canada
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Abstract
OBJECTIVES To validate the novel lymphocyte toxicity assay (LTA) based on the mitochondrial succinate dehydrogenase (SDH) activity vs. the LTA by using trypan blue exclusion and to determine the utility of the assay to confirm drug hypersensitivity syndrome (DHS) to sulphonamides (SMX) and aromatic anticonvulsants. METHODS Incubation of patient lymphocytes, with or without murine hepatic microsomes with anticonvulsants or SMX. The viability of lymphocytes was based on SDH activity that can be measured spectrophotometrically. The percentage of cells displaying cytotoxicity compared to controls (cells treated only with drug) was calculated. Seventy-two immunocompetent and 16 immunocompromised (HIV) patients with DHS to SMX were sampled. The results were validated vs. 26 controls that had not experienced DHS to SMX. Sixty-two patients who had DHS to anticonvulsants were compared with 24 controls that did not have any DHS to the same anticonvulsants. RESULTS The results showed a very good percentage of sensitivity 98 and specificity 96 with a kappa-score of 0.96. LTA higher than 13.5% was considered positive for the immunocompetent population and LTA higher than 22% was positive for the immunocompromised population. In two of the 26 controls, LTA was positive. CONCLUSION The high quantitative kappa-value 0.96 emphasizes that the novel LTA is at least as good as the trypan blue assay. The latter is labor intensive, time consuming, and prone to human error. The new assay is objective, faster, and has been reproducible in assessing cytotoxicity.
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Affiliation(s)
- M G Neuman
- Division of Clinical Pharmacology, Sunnybrook & Women's College Health Sciences Centre, Toronto, Ontario M4N 3M5, Canada.
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Knowles S, Shapiro L, Shear NH. Drug eruptions in children. Adv Dermatol 2000; 14:399-415; discussion 416. [PMID: 10643505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Affiliation(s)
- S Knowles
- Glaxo Wellcome-Sunnybrook Drug Safety Clinic, Toronto, Canada
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