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Nascimento NS, Torres-Obreque KM, Oliveira CA, Rabelo J, Baby AR, Long PF, Young AR, Rangel-Yagui CDO. Enzymes for dermatological use. Exp Dermatol 2024; 33:e15008. [PMID: 38284197 DOI: 10.1111/exd.15008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 10/18/2023] [Accepted: 12/15/2023] [Indexed: 01/30/2024]
Abstract
Skin is the ultimate barrier between body and environment and prevents water loss and penetration of pathogens and toxins. Internal and external stressors, such as ultraviolet radiation (UVR), can damage skin integrity and lead to disorders. Therefore, skin health and skin ageing are important concerns and increased research from cosmetic and pharmaceutical sectors aims to improve skin conditions and provide new anti-ageing treatments. Biomolecules, compared to low molecular weight drugs and cosmetic ingredients, can offer high levels of specificity. Topically applied enzymes have been investigated to treat the adverse effects of sunlight, pollution and other external agents. Enzymes, with a diverse range of targets, present potential for dermatological use such as antioxidant enzymes, proteases and repairing enzymes. In this review, we discuss enzymes for dermatological applications and the challenges associated in this growing field.
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Affiliation(s)
- Natália Santos Nascimento
- Department of Biochemical and Pharmaceutical Technology, School of Pharmaceutical Sciences, University of São Paulo (USP), São Paulo, Brazil
| | - Karin Mariana Torres-Obreque
- Department of Biochemical and Pharmaceutical Technology, School of Pharmaceutical Sciences, University of São Paulo (USP), São Paulo, Brazil
| | - Camila Areias Oliveira
- Laboratory of Analytical Validation and Development, Fundação Oswaldo Cruz - FIOCRUZ, Rio de Janeiro, Brazil
| | - Jheniffer Rabelo
- Department of Biochemical and Pharmaceutical Technology, School of Pharmaceutical Sciences, University of São Paulo (USP), São Paulo, Brazil
| | - André Rolim Baby
- Department of Pharmacy, School of Pharmaceutical Sciences, University of São Paulo (USP), São Paulo, Brazil
| | - Paul F Long
- Institute of Pharmaceutical Science, King's College London, London, UK
| | - Antony R Young
- St John's Institute of Dermatology, King's College London, London, UK
| | - Carlota de Oliveira Rangel-Yagui
- Department of Biochemical and Pharmaceutical Technology, School of Pharmaceutical Sciences, University of São Paulo (USP), São Paulo, Brazil
- Institute of Pharmaceutical Science, King's College London, London, UK
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Speeckaert R, Bulat V, Speeckaert MM, van Geel N. The Impact of Antioxidants on Vitiligo and Melasma: A Scoping Review and Meta-Analysis. Antioxidants (Basel) 2023; 12:2082. [PMID: 38136202 PMCID: PMC10740621 DOI: 10.3390/antiox12122082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 11/14/2023] [Accepted: 11/20/2023] [Indexed: 12/24/2023] Open
Abstract
Reactive oxygen species (ROS) generated during melanogenesis make melanocytes particularly vulnerable to oxidative stress, influencing their survival and melanin synthesis. Oxidative stress, significantly present in vitiligo and recently also detected in melasma, triggers inflammatory cascades and melanogenesis, making antioxidants a promising therapeutic avenue. A systematic search was conducted on Embase and Pubmed to study the efficacy of antioxidants for treating vitiligo and/or melasma. Meta-analysis was performed to assess the difference in Melasma Severity Index (MASI) scores between baseline and follow-up. Various antioxidants like polypodium leucotomos, ginkgo biloba, catalase/superoxide dismutase, and vitamin E have potential in vitiligo. For melasma, vitamin C, silymarin, and niacinamide were among those showing promise in reducing pigmentation, with vitamin C displaying significant effects in meta-analysis. Different antioxidants improve both vitiligo and melasma, with an increased minimal erythema dose (MED) following UV exposure being significant for vitiligo and tyrosinase inhibition being crucial for melasma. However, the efficacy of individual antioxidants varies, and their exact mechanisms, especially in stimulating melanocyte proliferation and anti-inflammatory pathways, require further investigation to understand better and optimize their use.
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Affiliation(s)
- Reinhart Speeckaert
- Department of Dermatology, Ghent University Hospital, Corneel Heymanslaan 10, 9000 Ghent, Belgium
| | - Vedrana Bulat
- Department of Dermatology, University Hospital Centre Zagreb, 10000 Zagreb, Croatia
| | | | - Nanja van Geel
- Department of Dermatology, Ghent University Hospital, Corneel Heymanslaan 10, 9000 Ghent, Belgium
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Chang WL, Ko CH. The Role of Oxidative Stress in Vitiligo: An Update on Its Pathogenesis and Therapeutic Implications. Cells 2023; 12:cells12060936. [PMID: 36980277 PMCID: PMC10047323 DOI: 10.3390/cells12060936] [Citation(s) in RCA: 29] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 03/13/2023] [Accepted: 03/16/2023] [Indexed: 03/30/2023] Open
Abstract
Vitiligo is an autoimmune skin disorder caused by dysfunctional pigment-producing melanocytes which are attacked by immune cells. Oxidative stress is considered to play a crucial role in activating consequent autoimmune responses related to vitiligo. Melanin synthesis by melanocytes is the main intracellular stressor, producing reactive oxygen species (ROS). Under normal physiological conditions, the antioxidative nuclear factor erythroid 2-related factor 2 (Nrf2) pathway functions as a crucial mediator for cells to resist oxidative stress. In pathological situations, such as with antioxidant defects or under inflammation, ROS accumulate and cause cell damage. Herein, we summarize events at the cellular level under excessive ROS in vitiligo and highlight exposure to melanocyte-specific antigens that trigger immune responses. Such responses lead to functional impairment and the death of melanocytes, which sequentially increase melanocyte cytotoxicity through both innate and adaptive immunity. This report provides new perspectives and advances our understanding of interrelationships between oxidative stress and autoimmunity in the pathogenesis of vitiligo. We describe progress with targeted antioxidant therapy, with the aim of providing potential therapeutic approaches.
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Affiliation(s)
- Wei-Ling Chang
- International Ph.D. Program for Cell Therapy and Regeneration Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan
| | - Chi-Hsiang Ko
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei 110, Taiwan
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Investigation of optimal energy or density of a fractional CO2 laser system in the treatment of stable non-segmental vitiligo. Complement Ther Clin Pract 2022; 49:101684. [DOI: 10.1016/j.ctcp.2022.101684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 10/13/2022] [Accepted: 10/29/2022] [Indexed: 11/06/2022]
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Rosmarin D, Passeron T, Pandya AG, Grimes P, Harris JE, Desai SR, Lebwohl M, Ruer-Mulard M, Seneschal J, Wolkerstorfer A, Kornacki D, Sun K, Butler K, Ezzedine K. Two Phase 3, Randomized, Controlled Trials of Ruxolitinib Cream for Vitiligo. N Engl J Med 2022; 387:1445-1455. [PMID: 36260792 DOI: 10.1056/nejmoa2118828] [Citation(s) in RCA: 57] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
BACKGROUND Vitiligo is a chronic autoimmune disease that causes skin depigmentation. A cream formulation of ruxolitinib (an inhibitor of Janus kinase 1 and 2) resulted in repigmentation in a phase 2 trial involving adults with vitiligo. METHODS We conducted two phase 3, double-blind, vehicle-controlled trials (Topical Ruxolitinib Evaluation in Vitiligo Study 1 [TRuE-V1] and 2 [TRuE-V2]) in North America and Europe that involved patients 12 years of age or older who had nonsegmental vitiligo with depigmentation covering 10% or less of total body-surface area. Patients were randomly assigned in a 2:1 ratio to apply 1.5% ruxolitinib cream or vehicle control twice daily for 24 weeks to all vitiligo areas on the face and body, after which all patients could apply 1.5% ruxolitinib cream through week 52. The primary end point was a decrease (improvement) of at least 75% from baseline in the facial Vitiligo Area Scoring Index (F-VASI; range, 0 to 3, with higher scores indicating a greater area of facial depigmentation), or F-VASI75 response, at week 24. There were five key secondary end points, including improved responses on the Vitiligo Noticeability Scale. RESULTS A total of 674 patients were enrolled, 330 in TRuE-V1 and 344 in TRuE-V2. In TRuE-V1, the percentage of patients with an F-VASI75 response at week 24 was 29.8% in the ruxolitinib-cream group and 7.4% in the vehicle group (relative risk, 4.0; 95% confidence interval [CI], 1.9 to 8.4; P<0.001). In TRuE-V2, the percentages were 30.9% and 11.4%, respectively (relative risk, 2.7; 95% CI, 1.5 to 4.9; P<0.001). The results for key secondary end points showed superiority of ruxolitinib cream over vehicle control. Among patients who applied ruxolitinib cream throughout 52 weeks, adverse events occurred in 54.8% in TRuE-V1 and 62.3% in TRuE-V2; the most common adverse events were application-site acne (6.3% and 6.6%, respectively), nasopharyngitis (5.4% and 6.1%), and application-site pruritus (5.4% and 5.3%). CONCLUSIONS In two phase 3 trials, application of ruxolitinib cream resulted in greater repigmentation of vitiligo lesions than vehicle control through 52 weeks, but it was associated with acne and pruritus at the application site. Larger and longer trials are required to determine the effect and safety of ruxolitinib cream in patients with vitiligo. (Funded by Incyte; TRuE-V1 and TRuE-V2 ClinicalTrials.gov numbers, NCT04052425 and NCT04057573.).
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Affiliation(s)
- David Rosmarin
- From Tufts Medical Center, Boston (D.R.); Centre Hospitalier Universitaire de Nice and Centre Méditerranéen de Médecine Moléculaire, Université Côte d'Azur, Nice (T.P.), the Office of Mireille Ruer-Mulard, M.D., Martiques (M.R.-M.), the Department of Dermatology and Pediatric Dermatology, National Reference Center for Rare Skin Disorders, Hôpital Saint-André, and Centre National de la Recherche Scientifique Unité Mixte de Recherche 5164, ImmunoConcept, Université de Bordeaux, Bordeaux (J.S.), and Henri Mondor University Hospital and Université Paris-Est Créteil Val de Marne, Paris (K.E.) - all in France; Palo Alto Foundation Medical Group, Sunnyvale (A.G.P.), and the Vitiligo and Pigmentation Institute of Southern California, Los Angeles (P.G.) - both in California; the University of Texas Southwestern Medical Center, Dallas (A.G.P., S.R.D.), and Innovative Dermatology, Plano (S.R.D.) - both in Texas; the University of Massachusetts Chan Medical School, Worcester (J.E.H.); Icahn School of Medicine at Mount Sinai, New York (M.L.); Amsterdam University Medical Center, Amsterdam (A.W.); and Incyte, Wilmington, DE (D.K., K.S., K.B.)
| | - Thierry Passeron
- From Tufts Medical Center, Boston (D.R.); Centre Hospitalier Universitaire de Nice and Centre Méditerranéen de Médecine Moléculaire, Université Côte d'Azur, Nice (T.P.), the Office of Mireille Ruer-Mulard, M.D., Martiques (M.R.-M.), the Department of Dermatology and Pediatric Dermatology, National Reference Center for Rare Skin Disorders, Hôpital Saint-André, and Centre National de la Recherche Scientifique Unité Mixte de Recherche 5164, ImmunoConcept, Université de Bordeaux, Bordeaux (J.S.), and Henri Mondor University Hospital and Université Paris-Est Créteil Val de Marne, Paris (K.E.) - all in France; Palo Alto Foundation Medical Group, Sunnyvale (A.G.P.), and the Vitiligo and Pigmentation Institute of Southern California, Los Angeles (P.G.) - both in California; the University of Texas Southwestern Medical Center, Dallas (A.G.P., S.R.D.), and Innovative Dermatology, Plano (S.R.D.) - both in Texas; the University of Massachusetts Chan Medical School, Worcester (J.E.H.); Icahn School of Medicine at Mount Sinai, New York (M.L.); Amsterdam University Medical Center, Amsterdam (A.W.); and Incyte, Wilmington, DE (D.K., K.S., K.B.)
| | - Amit G Pandya
- From Tufts Medical Center, Boston (D.R.); Centre Hospitalier Universitaire de Nice and Centre Méditerranéen de Médecine Moléculaire, Université Côte d'Azur, Nice (T.P.), the Office of Mireille Ruer-Mulard, M.D., Martiques (M.R.-M.), the Department of Dermatology and Pediatric Dermatology, National Reference Center for Rare Skin Disorders, Hôpital Saint-André, and Centre National de la Recherche Scientifique Unité Mixte de Recherche 5164, ImmunoConcept, Université de Bordeaux, Bordeaux (J.S.), and Henri Mondor University Hospital and Université Paris-Est Créteil Val de Marne, Paris (K.E.) - all in France; Palo Alto Foundation Medical Group, Sunnyvale (A.G.P.), and the Vitiligo and Pigmentation Institute of Southern California, Los Angeles (P.G.) - both in California; the University of Texas Southwestern Medical Center, Dallas (A.G.P., S.R.D.), and Innovative Dermatology, Plano (S.R.D.) - both in Texas; the University of Massachusetts Chan Medical School, Worcester (J.E.H.); Icahn School of Medicine at Mount Sinai, New York (M.L.); Amsterdam University Medical Center, Amsterdam (A.W.); and Incyte, Wilmington, DE (D.K., K.S., K.B.)
| | - Pearl Grimes
- From Tufts Medical Center, Boston (D.R.); Centre Hospitalier Universitaire de Nice and Centre Méditerranéen de Médecine Moléculaire, Université Côte d'Azur, Nice (T.P.), the Office of Mireille Ruer-Mulard, M.D., Martiques (M.R.-M.), the Department of Dermatology and Pediatric Dermatology, National Reference Center for Rare Skin Disorders, Hôpital Saint-André, and Centre National de la Recherche Scientifique Unité Mixte de Recherche 5164, ImmunoConcept, Université de Bordeaux, Bordeaux (J.S.), and Henri Mondor University Hospital and Université Paris-Est Créteil Val de Marne, Paris (K.E.) - all in France; Palo Alto Foundation Medical Group, Sunnyvale (A.G.P.), and the Vitiligo and Pigmentation Institute of Southern California, Los Angeles (P.G.) - both in California; the University of Texas Southwestern Medical Center, Dallas (A.G.P., S.R.D.), and Innovative Dermatology, Plano (S.R.D.) - both in Texas; the University of Massachusetts Chan Medical School, Worcester (J.E.H.); Icahn School of Medicine at Mount Sinai, New York (M.L.); Amsterdam University Medical Center, Amsterdam (A.W.); and Incyte, Wilmington, DE (D.K., K.S., K.B.)
| | - John E Harris
- From Tufts Medical Center, Boston (D.R.); Centre Hospitalier Universitaire de Nice and Centre Méditerranéen de Médecine Moléculaire, Université Côte d'Azur, Nice (T.P.), the Office of Mireille Ruer-Mulard, M.D., Martiques (M.R.-M.), the Department of Dermatology and Pediatric Dermatology, National Reference Center for Rare Skin Disorders, Hôpital Saint-André, and Centre National de la Recherche Scientifique Unité Mixte de Recherche 5164, ImmunoConcept, Université de Bordeaux, Bordeaux (J.S.), and Henri Mondor University Hospital and Université Paris-Est Créteil Val de Marne, Paris (K.E.) - all in France; Palo Alto Foundation Medical Group, Sunnyvale (A.G.P.), and the Vitiligo and Pigmentation Institute of Southern California, Los Angeles (P.G.) - both in California; the University of Texas Southwestern Medical Center, Dallas (A.G.P., S.R.D.), and Innovative Dermatology, Plano (S.R.D.) - both in Texas; the University of Massachusetts Chan Medical School, Worcester (J.E.H.); Icahn School of Medicine at Mount Sinai, New York (M.L.); Amsterdam University Medical Center, Amsterdam (A.W.); and Incyte, Wilmington, DE (D.K., K.S., K.B.)
| | - Seemal R Desai
- From Tufts Medical Center, Boston (D.R.); Centre Hospitalier Universitaire de Nice and Centre Méditerranéen de Médecine Moléculaire, Université Côte d'Azur, Nice (T.P.), the Office of Mireille Ruer-Mulard, M.D., Martiques (M.R.-M.), the Department of Dermatology and Pediatric Dermatology, National Reference Center for Rare Skin Disorders, Hôpital Saint-André, and Centre National de la Recherche Scientifique Unité Mixte de Recherche 5164, ImmunoConcept, Université de Bordeaux, Bordeaux (J.S.), and Henri Mondor University Hospital and Université Paris-Est Créteil Val de Marne, Paris (K.E.) - all in France; Palo Alto Foundation Medical Group, Sunnyvale (A.G.P.), and the Vitiligo and Pigmentation Institute of Southern California, Los Angeles (P.G.) - both in California; the University of Texas Southwestern Medical Center, Dallas (A.G.P., S.R.D.), and Innovative Dermatology, Plano (S.R.D.) - both in Texas; the University of Massachusetts Chan Medical School, Worcester (J.E.H.); Icahn School of Medicine at Mount Sinai, New York (M.L.); Amsterdam University Medical Center, Amsterdam (A.W.); and Incyte, Wilmington, DE (D.K., K.S., K.B.)
| | - Mark Lebwohl
- From Tufts Medical Center, Boston (D.R.); Centre Hospitalier Universitaire de Nice and Centre Méditerranéen de Médecine Moléculaire, Université Côte d'Azur, Nice (T.P.), the Office of Mireille Ruer-Mulard, M.D., Martiques (M.R.-M.), the Department of Dermatology and Pediatric Dermatology, National Reference Center for Rare Skin Disorders, Hôpital Saint-André, and Centre National de la Recherche Scientifique Unité Mixte de Recherche 5164, ImmunoConcept, Université de Bordeaux, Bordeaux (J.S.), and Henri Mondor University Hospital and Université Paris-Est Créteil Val de Marne, Paris (K.E.) - all in France; Palo Alto Foundation Medical Group, Sunnyvale (A.G.P.), and the Vitiligo and Pigmentation Institute of Southern California, Los Angeles (P.G.) - both in California; the University of Texas Southwestern Medical Center, Dallas (A.G.P., S.R.D.), and Innovative Dermatology, Plano (S.R.D.) - both in Texas; the University of Massachusetts Chan Medical School, Worcester (J.E.H.); Icahn School of Medicine at Mount Sinai, New York (M.L.); Amsterdam University Medical Center, Amsterdam (A.W.); and Incyte, Wilmington, DE (D.K., K.S., K.B.)
| | - Mireille Ruer-Mulard
- From Tufts Medical Center, Boston (D.R.); Centre Hospitalier Universitaire de Nice and Centre Méditerranéen de Médecine Moléculaire, Université Côte d'Azur, Nice (T.P.), the Office of Mireille Ruer-Mulard, M.D., Martiques (M.R.-M.), the Department of Dermatology and Pediatric Dermatology, National Reference Center for Rare Skin Disorders, Hôpital Saint-André, and Centre National de la Recherche Scientifique Unité Mixte de Recherche 5164, ImmunoConcept, Université de Bordeaux, Bordeaux (J.S.), and Henri Mondor University Hospital and Université Paris-Est Créteil Val de Marne, Paris (K.E.) - all in France; Palo Alto Foundation Medical Group, Sunnyvale (A.G.P.), and the Vitiligo and Pigmentation Institute of Southern California, Los Angeles (P.G.) - both in California; the University of Texas Southwestern Medical Center, Dallas (A.G.P., S.R.D.), and Innovative Dermatology, Plano (S.R.D.) - both in Texas; the University of Massachusetts Chan Medical School, Worcester (J.E.H.); Icahn School of Medicine at Mount Sinai, New York (M.L.); Amsterdam University Medical Center, Amsterdam (A.W.); and Incyte, Wilmington, DE (D.K., K.S., K.B.)
| | - Julien Seneschal
- From Tufts Medical Center, Boston (D.R.); Centre Hospitalier Universitaire de Nice and Centre Méditerranéen de Médecine Moléculaire, Université Côte d'Azur, Nice (T.P.), the Office of Mireille Ruer-Mulard, M.D., Martiques (M.R.-M.), the Department of Dermatology and Pediatric Dermatology, National Reference Center for Rare Skin Disorders, Hôpital Saint-André, and Centre National de la Recherche Scientifique Unité Mixte de Recherche 5164, ImmunoConcept, Université de Bordeaux, Bordeaux (J.S.), and Henri Mondor University Hospital and Université Paris-Est Créteil Val de Marne, Paris (K.E.) - all in France; Palo Alto Foundation Medical Group, Sunnyvale (A.G.P.), and the Vitiligo and Pigmentation Institute of Southern California, Los Angeles (P.G.) - both in California; the University of Texas Southwestern Medical Center, Dallas (A.G.P., S.R.D.), and Innovative Dermatology, Plano (S.R.D.) - both in Texas; the University of Massachusetts Chan Medical School, Worcester (J.E.H.); Icahn School of Medicine at Mount Sinai, New York (M.L.); Amsterdam University Medical Center, Amsterdam (A.W.); and Incyte, Wilmington, DE (D.K., K.S., K.B.)
| | - Albert Wolkerstorfer
- From Tufts Medical Center, Boston (D.R.); Centre Hospitalier Universitaire de Nice and Centre Méditerranéen de Médecine Moléculaire, Université Côte d'Azur, Nice (T.P.), the Office of Mireille Ruer-Mulard, M.D., Martiques (M.R.-M.), the Department of Dermatology and Pediatric Dermatology, National Reference Center for Rare Skin Disorders, Hôpital Saint-André, and Centre National de la Recherche Scientifique Unité Mixte de Recherche 5164, ImmunoConcept, Université de Bordeaux, Bordeaux (J.S.), and Henri Mondor University Hospital and Université Paris-Est Créteil Val de Marne, Paris (K.E.) - all in France; Palo Alto Foundation Medical Group, Sunnyvale (A.G.P.), and the Vitiligo and Pigmentation Institute of Southern California, Los Angeles (P.G.) - both in California; the University of Texas Southwestern Medical Center, Dallas (A.G.P., S.R.D.), and Innovative Dermatology, Plano (S.R.D.) - both in Texas; the University of Massachusetts Chan Medical School, Worcester (J.E.H.); Icahn School of Medicine at Mount Sinai, New York (M.L.); Amsterdam University Medical Center, Amsterdam (A.W.); and Incyte, Wilmington, DE (D.K., K.S., K.B.)
| | - Deanna Kornacki
- From Tufts Medical Center, Boston (D.R.); Centre Hospitalier Universitaire de Nice and Centre Méditerranéen de Médecine Moléculaire, Université Côte d'Azur, Nice (T.P.), the Office of Mireille Ruer-Mulard, M.D., Martiques (M.R.-M.), the Department of Dermatology and Pediatric Dermatology, National Reference Center for Rare Skin Disorders, Hôpital Saint-André, and Centre National de la Recherche Scientifique Unité Mixte de Recherche 5164, ImmunoConcept, Université de Bordeaux, Bordeaux (J.S.), and Henri Mondor University Hospital and Université Paris-Est Créteil Val de Marne, Paris (K.E.) - all in France; Palo Alto Foundation Medical Group, Sunnyvale (A.G.P.), and the Vitiligo and Pigmentation Institute of Southern California, Los Angeles (P.G.) - both in California; the University of Texas Southwestern Medical Center, Dallas (A.G.P., S.R.D.), and Innovative Dermatology, Plano (S.R.D.) - both in Texas; the University of Massachusetts Chan Medical School, Worcester (J.E.H.); Icahn School of Medicine at Mount Sinai, New York (M.L.); Amsterdam University Medical Center, Amsterdam (A.W.); and Incyte, Wilmington, DE (D.K., K.S., K.B.)
| | - Kang Sun
- From Tufts Medical Center, Boston (D.R.); Centre Hospitalier Universitaire de Nice and Centre Méditerranéen de Médecine Moléculaire, Université Côte d'Azur, Nice (T.P.), the Office of Mireille Ruer-Mulard, M.D., Martiques (M.R.-M.), the Department of Dermatology and Pediatric Dermatology, National Reference Center for Rare Skin Disorders, Hôpital Saint-André, and Centre National de la Recherche Scientifique Unité Mixte de Recherche 5164, ImmunoConcept, Université de Bordeaux, Bordeaux (J.S.), and Henri Mondor University Hospital and Université Paris-Est Créteil Val de Marne, Paris (K.E.) - all in France; Palo Alto Foundation Medical Group, Sunnyvale (A.G.P.), and the Vitiligo and Pigmentation Institute of Southern California, Los Angeles (P.G.) - both in California; the University of Texas Southwestern Medical Center, Dallas (A.G.P., S.R.D.), and Innovative Dermatology, Plano (S.R.D.) - both in Texas; the University of Massachusetts Chan Medical School, Worcester (J.E.H.); Icahn School of Medicine at Mount Sinai, New York (M.L.); Amsterdam University Medical Center, Amsterdam (A.W.); and Incyte, Wilmington, DE (D.K., K.S., K.B.)
| | - Kathleen Butler
- From Tufts Medical Center, Boston (D.R.); Centre Hospitalier Universitaire de Nice and Centre Méditerranéen de Médecine Moléculaire, Université Côte d'Azur, Nice (T.P.), the Office of Mireille Ruer-Mulard, M.D., Martiques (M.R.-M.), the Department of Dermatology and Pediatric Dermatology, National Reference Center for Rare Skin Disorders, Hôpital Saint-André, and Centre National de la Recherche Scientifique Unité Mixte de Recherche 5164, ImmunoConcept, Université de Bordeaux, Bordeaux (J.S.), and Henri Mondor University Hospital and Université Paris-Est Créteil Val de Marne, Paris (K.E.) - all in France; Palo Alto Foundation Medical Group, Sunnyvale (A.G.P.), and the Vitiligo and Pigmentation Institute of Southern California, Los Angeles (P.G.) - both in California; the University of Texas Southwestern Medical Center, Dallas (A.G.P., S.R.D.), and Innovative Dermatology, Plano (S.R.D.) - both in Texas; the University of Massachusetts Chan Medical School, Worcester (J.E.H.); Icahn School of Medicine at Mount Sinai, New York (M.L.); Amsterdam University Medical Center, Amsterdam (A.W.); and Incyte, Wilmington, DE (D.K., K.S., K.B.)
| | - Khaled Ezzedine
- From Tufts Medical Center, Boston (D.R.); Centre Hospitalier Universitaire de Nice and Centre Méditerranéen de Médecine Moléculaire, Université Côte d'Azur, Nice (T.P.), the Office of Mireille Ruer-Mulard, M.D., Martiques (M.R.-M.), the Department of Dermatology and Pediatric Dermatology, National Reference Center for Rare Skin Disorders, Hôpital Saint-André, and Centre National de la Recherche Scientifique Unité Mixte de Recherche 5164, ImmunoConcept, Université de Bordeaux, Bordeaux (J.S.), and Henri Mondor University Hospital and Université Paris-Est Créteil Val de Marne, Paris (K.E.) - all in France; Palo Alto Foundation Medical Group, Sunnyvale (A.G.P.), and the Vitiligo and Pigmentation Institute of Southern California, Los Angeles (P.G.) - both in California; the University of Texas Southwestern Medical Center, Dallas (A.G.P., S.R.D.), and Innovative Dermatology, Plano (S.R.D.) - both in Texas; the University of Massachusetts Chan Medical School, Worcester (J.E.H.); Icahn School of Medicine at Mount Sinai, New York (M.L.); Amsterdam University Medical Center, Amsterdam (A.W.); and Incyte, Wilmington, DE (D.K., K.S., K.B.)
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Therapies with Antioxidant Potential in Psoriasis, Vitiligo, and Lichen Planus. Antioxidants (Basel) 2021; 10:antiox10071087. [PMID: 34356320 PMCID: PMC8301010 DOI: 10.3390/antiox10071087] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 07/02/2021] [Accepted: 07/05/2021] [Indexed: 12/17/2022] Open
Abstract
Oxidative stress plays an important pathogenetic role in many chronic inflammatory diseases, including those of dermatological interest. In particular, regarding psoriasis, vitiligo, and lichen planus, excess reactive oxygen species and a decline in endogenous antioxidant systems are observed. In this regard, treatments with antioxidant properties could be appropriate therapeutic options. To date, clinical trials in dermatology on these treatments are limited. We reviewed the available studies on the efficacy of antioxidant therapies in psoriasis, vitiligo, and lichen planus. The role of herbal derivatives, vitamins, and trace elements was analyzed. The antioxidant properties of conventional therapies were also evaluated. Data from the literature suggest that antioxidants might be useful, but available studies on this topic are limited, heterogeneous, not completely standardized, and on small populations. Furthermore, in most cases, antioxidants alone are unable to induce significant clinical changes, except perhaps in mild forms, and must be used in conjunction with standard drug treatments to achieve measurable results. Further studies need to be conducted, considering larger populations and using internationally validated scales, in order to compare the results and clinical efficacy.
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Awad SS. Seven strategies for the management of depigmented skin according to the etiopathogenesis. J Cosmet Dermatol 2021. [DOI: 10.1111/jocd.13631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sherif S. Awad
- Dermatology & Venereology Department Faculty of Medicine Minia University Minia Egypt
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8
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Bergqvist C, Ezzedine K. Vitiligo: A Review. Dermatology 2020; 236:571-592. [DOI: 10.1159/000506103] [Citation(s) in RCA: 125] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 01/23/2020] [Indexed: 11/19/2022] Open
Abstract
Vitiligo, a common depigmenting skin disorder, has an estimated prevalence of 0.5–2% of the population worldwide. The disease is characterized by the selective loss of melanocytes which results in typical nonscaly, chalky-white macules. In recent years, considerable progress has been made in our understanding of the pathogenesis of vitiligo which is now clearly classified as an autoimmune disease. Vitiligo is often dismissed as a cosmetic problem, although its effects can be psychologically devastating, often with a considerable burden on daily life. In 2011, an international consensus classified segmental vitiligo separately from all other forms of vitiligo, and the term vitiligo was defined to designate all forms of nonsegmental vitiligo. This review summarizes the current knowledge on vitiligo and attempts to give an overview of the future in vitiligo treatment.
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Alshiyab DM, Al-qarqaz FA, Muhaidat JM, Alkhader YS, Al-sheyab RF, Jafaar SI. Comparison of the efficacy of Tacrolimus 0.1% ointment and Tacrolimus 0.1% plus topical pseudocatalase/superoxide dismutase gel in children with limited vitiligo: a randomized controlled trial. J DERMATOL TREAT 2020; 33:146-149. [DOI: 10.1080/09546634.2020.1729952] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Diala M. Alshiyab
- Department of Dermatology, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
| | - Firas A. Al-qarqaz
- Department of Dermatology, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
| | - Jihan M. Muhaidat
- Department of Dermatology, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
| | - Yousef S. Alkhader
- Department of Public Health, Community Medicine, Jordan University of Science and Technology, Irbid, Jordan
| | - Ruba F. Al-sheyab
- Department of Dermatology, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
| | - Sala I. Jafaar
- Department of Dermatology, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
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Yang EJ, Hendricks AJ, Beck KM, Shi VY. Bioactive: A new era of bioactive ingredients in topical formulations for inflammatory dermatoses. Dermatol Ther 2019; 32:e13101. [DOI: 10.1111/dth.13101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 09/23/2019] [Accepted: 09/25/2019] [Indexed: 11/30/2022]
Affiliation(s)
- Eric J. Yang
- Department of DermatologyUniversity of California San Francisco San Francisco California
- Chicago Medical School, Rosalind Franklin University of Medicine and Science North Chicago Illinois
| | | | - Kristen M. Beck
- Department of DermatologyUniversity of California San Francisco San Francisco California
| | - Vivian Y. Shi
- Department of Medicine, Division of DermatologyUniversity of Arizona Tucson Arizona
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11
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Sendrasoa FA, Ranaivo IM, Sata M, Andrianarison M, Raharolahy O, Rakotoarisaona MF, Razanakoto NH, Ramarozatovo LS, Rapelanoro Rabenja F. Treatment responses in patients with vitiligo to very potent topical corticosteroids combined with vitaminotherapy in Madagascar. Int J Dermatol 2019; 58:908-911. [PMID: 31148154 DOI: 10.1111/ijd.14510] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 03/22/2019] [Accepted: 04/30/2019] [Indexed: 11/29/2022]
Abstract
INTRODUCTION Vitiligo is a refractory disease in which treatment modalities are not yet established. We aim to assess results obtained 10 years after the initiation of a therapeutic protocol which combines very potent topical corticosteroids (TCS), vitaminotherapy (B12 and C), and suppression of microtraumas in the management of nonsegmental vitiligo in Madagascar. METHODS It was a prospective and descriptive study over a period of 6 years (2011-2016) in the Department of Dermatology, Joseph Raseta Befelatanana, Antananarivo, Madagascar. The diagnosis of vitiligo was based on clinical data. Patients who agreed to follow the treatment protocol, which combined very potent TCS (two applications/day for 10 days, and then one application/day for the following 10 days), oral vitamin C 500 mg/day for 20 days, and oral vitamin B12 100 mg/day for 20 days, were included in the study. Two successive courses of treatment were made 10 days apart. RESULTS The details of 308 vitiligo patients were analyzed. The mean age of patients was 33.3 years. There was a female preponderance (sex ratio: 0.6). The duration of treatment in our patients varied from 3 to 18 months. Two hundred and thirty-nine patients had good therapeutic compliance and attended regular follow-up. Excellent repigmentation (more than 76% area repigmented) was noted in 50 patients (65.7%) less than 14 years of age. Lesions evolving in less than 1 year in 31 patients (36.9%) had excellent response to treatment. Localized lesions responded favorably to treatment with excellent repigmentation in 108 patients. CONCLUSION These results show that therapeutic response is better in young people, lesions less than 1 year of evolution, and for localization of vitiligo in the face and neck.
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Affiliation(s)
- Fandresena A Sendrasoa
- Department of Dermatology, University Hospital Joseph Raseta Befelatanana, Antananarivo, Madagascar
| | - Irina M Ranaivo
- Department of Dermatology, University Hospital Morafeno, Toamasina, Madagascar
| | - Moril Sata
- Department of Dermatology, University Hospital Joseph Raseta Befelatanana, Antananarivo, Madagascar
| | | | - Onivola Raharolahy
- Department of Dermatology, University Hospital Joseph Raseta Befelatanana, Antananarivo, Madagascar
| | | | - Naina H Razanakoto
- Department of Dermatology, University Hospital Joseph Raseta Befelatanana, Antananarivo, Madagascar
| | - Lala S Ramarozatovo
- Department of Dermatology, University Hospital Joseph Raseta Befelatanana, Antananarivo, Madagascar
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12
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Speeckaert R, Dugardin J, Lambert J, Lapeere H, Verhaeghe E, Speeckaert MM, van Geel N. Critical appraisal of the oxidative stress pathway in vitiligo: a systematic review and meta-analysis. J Eur Acad Dermatol Venereol 2018; 32:1089-1098. [PMID: 29341310 DOI: 10.1111/jdv.14792] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 12/13/2017] [Indexed: 12/17/2022]
Abstract
BACKGROUND The pathogenesis of vitiligo remains a topic of extensive debate. This is partly due to the moderate efficacy of current treatments. The role of the oxidative stress pathway in vitiligo is a popular although controversial research topic. OBJECTIVE To clarify the role of the oxidative stress pathway in vitiligo compared to other inflammatory skin disorders and to assess the therapeutic role of antioxidants. METHODS We conducted a systematic search of the existing literature on the aberrancies of the oxidative stress pathway in vitiligo. Subsequently, the efficacy of both topical and oral antioxidants in clinical trials was investigated. RESULTS A deregulated oxidative pathway is clearly evident with elevated superoxide dismutase, decreased catalase and increased lipid peroxidation. However, similar results have been obtained in other inflammatory skin diseases such as psoriasis, atopic dermatitis, lichen planus and urticaria. This questions the unique role of oxidative stress in the development of vitiligo. Some isolated successes have been reported with oral ginkgo biloba, polypodium leucotomos and vitamin C and E preparations, while other clinical trials have failed to show reproducible results. The use of topical antioxidants delivers in general no beneficial results. CONCLUSION The oxidative pathway is affected in vitiligo, but its unique initiating or contributory role in the pathogenesis is less evident. Interesting data support the added value of oral antioxidants in vitiligo although confirmatory studies are missing.
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Affiliation(s)
- R Speeckaert
- Department of Dermatology, Ghent University Hospital, Ghent, Belgium
| | - J Dugardin
- Department of Dermatology, Ghent University Hospital, Ghent, Belgium
| | - J Lambert
- Department of Dermatology, Ghent University Hospital, Ghent, Belgium
| | - H Lapeere
- Department of Dermatology, Ghent University Hospital, Ghent, Belgium
| | - E Verhaeghe
- Department of Dermatology, Ghent University Hospital, Ghent, Belgium
| | - M M Speeckaert
- Department of Internal Medicine, Ghent University Hospital, Ghent, Belgium
| | - N van Geel
- Department of Dermatology, Ghent University Hospital, Ghent, Belgium
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13
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Li Y, Kong X, Chen J, Liu H, Zhang H. Characteristics of the Copper,Zinc Superoxide Dismutase of a Hadal Sea Cucumber ( Paelopatides sp.) from the Mariana Trench. Mar Drugs 2018; 16:md16050169. [PMID: 29783627 PMCID: PMC5983300 DOI: 10.3390/md16050169] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 05/11/2018] [Accepted: 05/15/2018] [Indexed: 01/06/2023] Open
Abstract
Superoxide dismutases (SODs) are among the most important antioxidant enzymes and show great potential in preventing adverse effects during therapeutic trials. In the present study, cloning, expression, and characterization of a novel Cu,Zn superoxide dismutase (Ps-Cu,Zn-SOD) from a hadal sea cucumber (Paelopatides sp.) were reported. Phylogenetic analysis showed that Ps-Cu,Zn-SOD belonged to a class of intracellular SOD. Its Km and Vmax were 0.0258 ± 0.0048 mM and 925.1816 ± 28.0430 units/mg, respectively. The low Km value of this enzyme represents a high substrate affinity and can adapt to the low metabolic rate of deep sea organisms. The enzyme functioned from 0 °C to 80 °C with an optimal temperature of 40 °C. Moreover, the enzyme activity was maintained up to 87.12% at 5 °C. The enzyme was active at pH 4 to 12 with an optimal pH of 8.5. Furthermore, Ps-Cu,Zn-SOD tolerated high concentration of urea and GuHCl, resisted hydrolysis by proteases, and maintained stability at high pressure. All these features demonstrated that the deep sea Ps-Cu,Zn-SOD is a potential candidate for application to the biopharmaceutical field.
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Affiliation(s)
- Yanan Li
- Institute of Deep-Sea Science and Engineering, Chinese Academy of Sciences, Sanya 572000, China.
- College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100039, China.
| | - Xue Kong
- Institute of Deep-Sea Science and Engineering, Chinese Academy of Sciences, Sanya 572000, China.
- College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100039, China.
| | - Jiawei Chen
- Institute of Deep-Sea Science and Engineering, Chinese Academy of Sciences, Sanya 572000, China.
- College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100039, China.
| | - Helu Liu
- Institute of Deep-Sea Science and Engineering, Chinese Academy of Sciences, Sanya 572000, China.
| | - Haibin Zhang
- Institute of Deep-Sea Science and Engineering, Chinese Academy of Sciences, Sanya 572000, China.
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Abstract
Medical treatments alone, or in combination with phototherapy, are key approaches for treating nonsegmental vitiligo and, to a lesser extent, segmental vitiligo. The treatments are useful for halting disease progression and have been proven effective for inducing repigmentation and decreasing risk of relapses. Although the treatments have side effects and limitations, vitiligo often induces a marked decrease in quality of life and in most cases the risk:benefit ratio is in favor of an active approach. Systemic and topical agents targeting the pathways involved in loss of melanocytes and in differentiation of melanocyte stem cells should provide more effective approaches in the near future.
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Affiliation(s)
- Thierry Passeron
- Department of Dermatology and INSERM U1065, Team 12, C3M, Archet 2 Hospital, University Hospital of Nice, 150 Route de Ginestière, Nice 06200, France.
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15
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Srivastava S, Singh D, Patel S, Singh MR. Role of enzymatic free radical scavengers in management of oxidative stress in autoimmune disorders. Int J Biol Macromol 2017; 101:502-517. [PMID: 28342757 DOI: 10.1016/j.ijbiomac.2017.03.100] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 03/17/2017] [Accepted: 03/18/2017] [Indexed: 02/03/2023]
Abstract
Autoimmune disorders are distinct with over production and accumulation of free radicals due to its undisclosed genesis. The cause of numerous disorders as cancer, arthritis, psoriasis, diabetes, alzheimer's, cardiovascular disease, Parkinson's, respiratory distress syndrome, colitis, crohn's, pulmonary fibrosis, obesity and ageing have been associated with immune dysfunction and oxidative stress. In an oxidative stress, reactive oxygen species generally provoke the series of oxidation at cellular level. The buildup of free radicals in turn triggers various inflammatory cells causing release of various inflammatory interleukins, cytokines, chemokines, and tumor necrosis factors which mediate signal transduction and transcription pathways as nuclear factor- kappa B (NF-κB), signal transducer and activator of transcription 3 (STAT3), hypoxia-inducible factor-1 (HIF-1α) and nuclear factor-erythroid 2-related factor (Nrf2). The imbalance could only be combat by supplementing natural defensive antioxidant enzymes such as superoxide dismutase and catalase. The efficiency of these enzymes is enhanced by use of colloidal carriers which include cellular carriers, vesicular and particulate systems like erythrocytes, leukocytes, platelets, liposomes, transferosomes, solid lipid nanoparticles, microspheres, emulsions. Thus this review provides a platform for understanding importance of antioxidant enzymes and its therapeutic applications in treatment of various autoimmune disorders.
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Affiliation(s)
- Shikha Srivastava
- University Institute of Pharmacy, Pt. Ravishankar Shukla University, Raipur, Chattissgarh, 492010, India
| | - Deependra Singh
- University Institute of Pharmacy, Pt. Ravishankar Shukla University, Raipur, Chattissgarh, 492010, India
| | - Satish Patel
- University Institute of Pharmacy, Pt. Ravishankar Shukla University, Raipur, Chattissgarh, 492010, India
| | - Manju R Singh
- University Institute of Pharmacy, Pt. Ravishankar Shukla University, Raipur, Chattissgarh, 492010, India.
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16
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Tian T, Zhang RZ, Yang YH, Liu Q, Li D, Pan XR. Muse Cells Derived from Dermal Tissues Can Differentiate into Melanocytes. Cell Reprogram 2017; 19:116-122. [PMID: 28170296 DOI: 10.1089/cell.2016.0032] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
The objective of the authors has been to obtain multilineage-differentiating stress-enduring cells (Muse cells) from primary cultures of dermal fibroblasts, identify their pluripotency, and detect their ability to differentiate into melanocytes. The distribution of SSEA-3-positive cells in human scalp skin was assessed by immunohistochemistry, and the distribution of Oct4, Sox2, Nanog, and SSEA-3-positive cells was determined by immunofluorescence staining. The expression levels of Sox2, Oct4, hKlf4, and Nanog mRNAs and proteins in Muse cells were determined by reverse transcription polymerase chain reaction (RT-PCR) analyses and Western blots, respectively. These Muse cells differentiated into melanocytes in differentiation medium. The SSEA-3-positive cells were scattered in the basement membrane zone and the dermis, with comparatively more in the sebaceous glands, vascular and sweat glands, as well as the outer root sheath of hair follicles, the dermal papillae, and the hair bulbs. Muse cells, which have the ability to self-renew, were obtained from scalp dermal fibroblasts by flow cytometry sorting with an anti-SSEA-3 antibody. The results of RT-PCR, Western blot, and immunofluorescence staining showed that the expression levels of Oct4, Nanog, Sox2, and Klf4 mRNAs and proteins in Muse cells were significantly different from their parental dermal fibroblasts. Muse cells differentiated into melanocytes when cultured in melanocyte differentiation medium, and the Muse cell-derived melanocytes expressed the melanocyte-specific marker HMB45. Muse cells could be obtained by flow cytometry from primary cultures of scalp dermal fibroblasts, which possessed the ability of pluripotency and self-renewal, and could differentiate into melanocytes in vitro.
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Affiliation(s)
- Ting Tian
- 1 The Dermal and Venereal Department, The Third Affiliated Hospital of Suzhou University , Changzhou, China
| | - Ru-Zhi Zhang
- 1 The Dermal and Venereal Department, The Third Affiliated Hospital of Suzhou University , Changzhou, China
| | - Yu-Hua Yang
- 1 The Dermal and Venereal Department, The Third Affiliated Hospital of Suzhou University , Changzhou, China
| | - Qi Liu
- 1 The Dermal and Venereal Department, The Third Affiliated Hospital of Suzhou University , Changzhou, China
| | - Di Li
- 1 The Dermal and Venereal Department, The Third Affiliated Hospital of Suzhou University , Changzhou, China
| | - Xiao-Ru Pan
- 2 The Dermal and Venereal Department, Bengbu Medical College , Bengbu, China
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Thomas KS, Batchelor JM, Bath-Hextall F, Chalmers JR, Clarke T, Crowe S, Delamere FM, Eleftheriadou V, Evans N, Firkins L, Greenlaw N, Lansbury L, Lawton S, Layfield C, Leonardi-Bee J, Mason J, Mitchell E, Nankervis H, Norrie J, Nunn A, Ormerod AD, Patel R, Perkins W, Ravenscroft JC, Schmitt J, Simpson E, Whitton ME, Williams HC. A programme of research to set priorities and reduce uncertainties for the prevention and treatment of skin disease. PROGRAMME GRANTS FOR APPLIED RESEARCH 2016. [DOI: 10.3310/pgfar04180] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BackgroundSkin diseases are very common and can have a large impact on the quality of life of patients and caregivers. This programme addressed four diseases: (1) eczema, (2) vitiligo, (3) squamous cell skin cancer (SCC) and (4) pyoderma gangrenosum (PG).ObjectiveTo set priorities and reduce uncertainties for the treatment and prevention of skin disease in our four chosen diseases.DesignMixed methods including eight systematic reviews, three prioritisation exercises, two pilot randomised controlled trials (RCTs), three feasibility studies, two core outcome initiatives, four funding proposals for national RCTs and one completed national RCT.SettingSecondary care, primary care and the general population.ParticipantsPatients (and their caregivers) with eczema, vitiligo, SCC and PG, plus health-care professionals with an interest in skin disease.InterventionsOur three intervention studies included (1) barrier enhancement using emollients from birth to prevent eczema (pilot RCT); (2) handheld narrowband ultraviolet light B therapy for treating vitiligo (pilot RCT); and (3) oral ciclosporin (Neoral®, Novartis Pharmaceuticals) compared with oral prednisolone for managing PG (pragmatic national RCT).ResultsSystematic reviews included two overarching systematic reviews of RCTs of treatments for eczema and vitiligo, an umbrella review of systematic reviews of interventions for the prevention of eczema, two reviews of treatments for SCC (one included RCTs and the second included observational studies), and three reviews of outcome measures and outcome reporting. Three prioritisation partnership exercises identified 26 priority areas for future research in eczema, vitiligo and SCC. Two international consensus initiatives identified four core domains for future eczema trials and seven core domains for vitiligo trials. Two pilot RCTs and three feasibility studies critically informed development of four trial proposals for external funding, three of which are now funded and one is pending consideration by funders. Our pragmatic RCT tested the two commonly used systemic treatments for PG (prednisolone vs. ciclosporin) and found no difference in their clinical effectiveness or cost-effectiveness. Both drugs showed limited benefit. Only half of the participants’ ulcers had healed by 6 months. For those with healed ulcers, recurrence was common (30%). Different side effect profiles were noted for each drug, which can inform clinical decisions on an individual patient basis. Three researchers were trained to PhD level and a dermatology patient panel was established to ensure patient involvement in all aspects of the programme.ConclusionsFindings from this programme of work have already informed clinical guidelines and patient information resources. Feasibility studies have ensured that large national pragmatic trials will now be conducted on important areas of treatment uncertainty that address the needs of patients and the NHS. There is scope for considerable improvement in terms of trial design, conduct and reporting for RCTs of skin disease, which can be improved through wider collaboration, registration of trial protocols and complete reporting and international consensus over core outcome sets. Three national trials have now been funded as a result of this work. Two international initiatives to establish how best to measure the core outcome domains for eczema and vitiligo are ongoing.Trial registrationCurrent Controlled Trials Barrier Enhancement for Eczema Prevention (BEEP) (ISRCTN84854178 and NCT01142999), Study of Treatments fOr Pyoderma GAngrenosum Patients (STOP GAP) (ISRCTN35898459) and Hand Held NB-UVB for Early or Focal Vitiligo at Home (HI-Light Pilot Trial) (NCT01478945).FundingThis project was funded by the National Institute for Health Research (NIHR) Programme Grants for Applied Research programme and will be published in full inProgramme Grants for Applied Research; Vol. 4, No. 18. See the NIHR Journals Library website for further project information.
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Affiliation(s)
- Kim S Thomas
- Centre of Evidence Based Dermatology, University of Nottingham, Nottingham, UK
| | | | | | - Joanne R Chalmers
- Centre of Evidence Based Dermatology, University of Nottingham, Nottingham, UK
| | - Tessa Clarke
- Centre of Evidence Based Dermatology, University of Nottingham, Nottingham, UK
| | | | - Finola M Delamere
- Centre of Evidence Based Dermatology, University of Nottingham, Nottingham, UK
| | | | - Nicholas Evans
- Trust Headquarters, West Hertfordshire Hospital NHS Trust, Hemel Hempstead, UK
| | - Lester Firkins
- Strategy and Development Group, James Lind Alliance, Oxford, UK
| | - Nicola Greenlaw
- Robertson Centre for Biostatistics, University of Glasgow, Glasgow, UK
| | - Louise Lansbury
- Centre of Evidence Based Dermatology, University of Nottingham, Nottingham, UK
| | - Sandra Lawton
- Dermatology Department, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - Carron Layfield
- Centre of Evidence Based Dermatology, University of Nottingham, Nottingham, UK
| | - Jo Leonardi-Bee
- Division of Epidemiology and Public Health, University of Nottingham, Nottingham, UK
| | - James Mason
- School of Medicine, Pharmacy and Health, Durham University, Durham, UK
| | - Eleanor Mitchell
- Nottingham Clinical Trials Unit, University of Nottingham, Nottingham, UK
| | - Helen Nankervis
- Centre of Evidence Based Dermatology, University of Nottingham, Nottingham, UK
| | - John Norrie
- Health Services Research Unit, University of Aberdeen, Aberdeen, UK
| | - Andrew Nunn
- Medical Research Council (MRC) Clinical Trials Unit, University College London, London, UK
| | | | - Ramesh Patel
- Radcliffe-on-Trent Health Centre, Nottingham, UK
| | - William Perkins
- Dermatology Department, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - Jane C Ravenscroft
- Dermatology Department, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - Jochen Schmitt
- Centre for Evidence-based Healthcare, Medical Faculty Carl Gustav Carus, Dresden, Germany
| | - Eric Simpson
- Oregon Health and Science University, Portland, OR, USA
| | - Maxine E Whitton
- Centre of Evidence Based Dermatology, University of Nottingham, Nottingham, UK
| | - Hywel C Williams
- Centre of Evidence Based Dermatology, University of Nottingham, Nottingham, UK
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Hussain I, Hussain N, Manan A, Rashid A, Khan B, Bakhsh S. Fabrication of anti-vitiligo ointment containing Psoralea corylifolia: in vitro and in vivo characterization. Drug Des Devel Ther 2016; 10:3805-3816. [PMID: 27920496 PMCID: PMC5125804 DOI: 10.2147/dddt.s114328] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Vitiligo is a repugnant and odious dermatological malady of the time. It has an detrimental impact on the pigmentation of the human skin as a result of the destruction of cutaneous melanocytes. It affects 1%-2% of the population worldwide. Different therapeutic regimens have been deployed to treat vitiligo, but none of them could stand alone to be stated as a perfect cure. Recently, a change has been observed through novel experimental-designed optimization leading to the development of an anti-vitiligo ointment containing Psoralea corylifolia (PC) seed powder. AIM The aim of this study was to explore the clinical outcomes of ointment containing powdered seeds of PC. MATERIALS AND METHODS Guided by the protocol Response Surface Methodology, 13 formulations of concentration variance of permeation enhancers were prepared. The formulation fulfilling the required criteria (pH; temperature stability tests at 8°C±0.1°C, 25°C±0.1°C and 40°C±0.1°C; and the physical properties such as color, bleeding and rheology) was selected for clinical trials. Fourier transform infrared spectroscopy studies of seed powder of PC and selected formulation of the seed powder were performed. After obtaining informed consents and with prior approval of university and hospital ethical review boards, 20 patients (age range 25-65 years) were included in the present study. Formulations were applied on the affected body parts of patients, and some affected portion of the same patient was taken as control (self-control study design). The pigmentation of white spots of vitiligo was photographically evaluated before, during and after 12 weeks of treatment. Analysis of the measured values was performed using GraphPad Prism version 5 statistical software. A paired sample t-test was performed to observe variation between repigmented patches and white patches of self-control. RESULTS Hydrophilic ointment (10% w/w) prepared with seed powder of PC was fabricated. The ointment was found effective for small circular white lesions of vitiligo as compared to self-control. Pre- and post-treatment differences in the levels of pigmentation were statistically significant (P≤0.05). CONCLUSION Ointment containing seed powder of PC could be an effective monotherapy for small circular white lesions of vitiligo.
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Affiliation(s)
- Irshad Hussain
- Department of Dermatology
- Department of Pharmacy, SMBB Medical University, Larkana
| | - Nisar Hussain
- Faculty of Pharmacy, Bahauddin Zakariya University, Multan
| | - Abdul Manan
- Department of Dermatology
- Department of Pharmacy, SMBB Medical University, Larkana
| | - Abdur Rashid
- Drug Regulatory Authority of Pakistan, Islamabad
| | - Barkat Khan
- Faculty of Pharmacy, Gomal University, D.I.Khan, Pakistan
| | - Sattar Bakhsh
- Faculty of Pharmacy, Gomal University, D.I.Khan, Pakistan
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Bapur Erduran F, Adışen E. Comparison of the efficacy of 308-nm excimer lamp monotherapy with topical tacrolimus or clobetasol 17-propionate combination therapies in localized vitiligo. PHOTODERMATOLOGY PHOTOIMMUNOLOGY & PHOTOMEDICINE 2016; 32:247-253. [PMID: 27552312 DOI: 10.1111/phpp.12266] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 08/18/2016] [Indexed: 11/27/2022]
Abstract
BACKGROUND In recent years, excimer light treatments have come to the fore in localized vitiligo because of their high efficacy and safety. OBJECTIVE We aimed to evaluate the efficacy of 308-nm excimer lamp as a monotherapy and its combination with tacrolimus 0.1% or clobetasol 17-propionate 0.05% ointment in localized vitiligo. METHODS We performed a retrospective study including a total of 82 patients who were treated with excimer lamp monotherapy (EL group) (n = 30), excimer lamp + topical tacrolimus (EL + T group) (n = 29), or excimer lamp + topical clobetasol 17-propionate (EL + CS group) (n = 23). We used digital morphometric analysis for the evaluation of repigmentation. RESULTS Median healing rate after 24 sessions was significantly higher in EL + T group (69%) than EL (42.5%) and EL + CS (44%) groups (P = 0.008 and P = 0.032). There were not any patients with face lesions in EL + CS group, so when these patients were excluded, EL + T and EL + CS groups had higher healing rates than EL group (P = 0.037 and P = 0.043). It was confirmed that combination with tacrolimus was superior to clobetasol-17 propionate (P = 0.048) with multivariate regression analysis. CONCLUSION We noted that 308-nm excimer lamp therapy was efficacious; adding topical tacrolimus or topical clobetasol-17 propionate could increase response to treatment.
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Affiliation(s)
| | - Esra Adışen
- Department of Dermatology, Gazi University Hospital, Ankara, Turkey
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Namazi MR, Shotorbani AK. Evaluation of the Efficacy of Topical Ethyl Vanillate in Enhancing the Effect of Narrow Band Ultraviolet B against Vitiligo: A Double Blind Randomized, Placebo-Controlled Clinical Trial. IRANIAN JOURNAL OF MEDICAL SCIENCES 2015; 40:478-84. [PMID: 26538775 PMCID: PMC4628137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
BACKGROUND Vitiligo is an acquired disease of skin that presents with depigmented patches due to lack of melanocytes in the epidermis. Accumulation of toxic free radicals like hydrogen peroxide in the epidermis may be responsible for melanocytes death. Since ethyl vanillate (vanillic acid ethyl ester) is a strong hydrogen peroxide scavenger, it may be effective against vitiligo. This study was carried out to evaluate the effect of ethyl vanillate cream on vitiligo patients receiving phototherapy. METHODS A double-blind placebo-controlled clinical trial using ethyl vanillate cream 20% was performed on 30 cases of generalized stable vitiligo (randomly selected) who were receiving phototherapy in the outpatient clinic of Faghihi Hospital (Shiraz, Iran). The patients randomly applied ethyl vanillate on an assigned lesion (left or right side of the body) and placebo on the opposite side lesion (almost the same size and location) twice a day for 3 months, while receiving a narrow band ultraviolet B (NB-UVB) 2-3 times weekly. Photos were taken at the beginning of the trial and at the end of 4(th), 8(th), and 12(th) weeks. Then, images were compared with the photos from the beginning of the trial based on VASI score. RESULTS There was a significant change in pigmentation after applying ethyl vanillate compared with baseline in medication side (P=0.002), but no significant change in placebo side (P=0.066). Additionally, there was a significant difference between medication and placebo sides in pigmentation (P=0.005). CONCLUSION Ethyl vanillate may serve as an adjunct therapy for the treatment of vitiligo, although changes in pigmentation are mild clinically.
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Affiliation(s)
- Mohammad Reza Namazi
- Molecular Dermatology Research Center, Department of Dermatology, Shiraz University of Medical Sciences, Shiraz, Iran,Skin and Stem Cell Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Amir Kalafi Shotorbani
- Molecular Dermatology Research Center, Department of Dermatology, Shiraz University of Medical Sciences, Shiraz, Iran,Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran,Correspondence: Amir Kalafi Shotorbani, MD; Department of Dermatology, Faghihi Hospital, Zand Street, Shiraz, Iran Tel/Fax: +98 71 32319049
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Whitton ME, Pinart M, Batchelor J, Leonardi-Bee J, González U, Jiyad Z, Eleftheriadou V, Ezzedine K. Interventions for vitiligo. Cochrane Database Syst Rev 2015; 2015:CD003263. [PMID: 25710794 PMCID: PMC10887429 DOI: 10.1002/14651858.cd003263.pub5] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Vitiligo is a chronic skin disorder characterised by patchy loss of skin colour. Some people experience itching before the appearance of a new patch. It affects people of any age or ethnicity, more than half of whom develop it before the age of 20 years. There are two main types: generalised vitiligo, the common symmetrical form, and segmental, affecting only one side of the body. Around 1% of the world's population has vitiligo, a disease causing white patches on the skin. Several treatments are available. Some can restore pigment but none can cure the disease. OBJECTIVES To assess the effects of all therapeutic interventions used in the management of vitiligo. SEARCH METHODS We updated our searches of the following databases to October 2013: the Cochrane Skin Group Specialised Register, CENTRAL in The Cochrane Library (2013, Issue 10), MEDLINE, Embase, AMED, PsycINFO, CINAHL and LILACS. We also searched five trials databases, and checked the reference lists of included studies for further references to relevant randomised controlled trials (RCTs). SELECTION CRITERIA Randomised controlled trials (RCTs) assessing the effects of treatments for vitiligo. DATA COLLECTION AND ANALYSIS At least two review authors independently assessed study eligibility and methodological quality, and extracted data. MAIN RESULTS This update of the 2010 review includes 96 studies, 57 from the previous update and 39 new studies, totalling 4512 participants. Most of the studies, covering a wide range of interventions, had fewer than 50 participants. All of the studies assessed repigmentation, however only five reported on all of our three primary outcomes which were quality of life, > 75% repigmentation and adverse effects. Of our secondary outcomes, six studies measured cessation of spread but none assessed long-term permanence of repigmentation resulting from treatment at two years follow-up.Most of the studies assessed combination therapies which generally reported better results. New interventions include seven new surgical interventions.We analysed the data from 25 studies which assessed our primary outcomes. We used the effect measures risk ratio (RR), and odds ratio (OR) with their 95% confidence intervals (CI) and where N is the number of participants in the study.We were only able to analyse one of nine studies assessing quality of life and this showed no statistically significant improvement between the comparators.Nine analyses from eight studies reported >75% repigmentation. In the following studies the repigmentation was better in the combination therapy group: calcipotriol plus PUVA (psoralen with UVA light) versus PUVA (paired OR 4.25, 95% CI 1.43 to 12.64, one study, N = 27); hydrocortisone-17-butyrate plus excimer laser versus excimer laser alone (RR 2.57, 95% CI 1.20 to 5.50, one study, N = 84); oral minipulse of prednisolone (OMP) plus NB-UVB (narrowband UVB) versus OMP alone (RR 7.41, 95% CI 1.03 to 53.26, one study, N = 47); azathioprine with PUVA versus PUVA alone (RR 17.77, 95% CI 1.08 to 291.82, one study, N = 58) and 8-Methoxypsoralen (8-MOP ) plus sunlight versus psoralen (RR 2.50, 95% CI 1.06 to 5.91, one study, N = 168). In these three studies ginkgo biloba was better than placebo (RR 4.40, 95% CI 1.08 to 17.95, one study, N = 47); clobetasol propionate was better than PUVAsol (PUVA with sunlight) (RR 4.70, 95% CI 1.14 to 19.39, one study, N = 45); split skin grafts with PUVAsol was better than minipunch grafts with PUVAsol (RR 1.89, 95% CI 1.25 to 2.85, one study, N = 64).We performed one meta-analysis of three studies, in which we found a non-significant 60% increase in the proportion of participants achieving >75% repigmentation in favour of NB-UVB compared to PUVA (RR 1.60, 95% CI 0.74 to 3.45; I² = 0%).Studies assessing topical preparations, in particular topical corticosteroids, reported most adverse effects. However, in combination studies it was difficult to ascertain which treatment caused these effects. We performed two analyses from a pooled analysis of three studies on adverse effects. Where NB-UVB was compared to PUVA, the NB-UVB group reported less observations of nausea in three studies (RR 0.13, 95% CI 0.02 to 0.69; I² = 0% three studies, N = 156) and erythema in two studies (RR 0.73, 95% CI 0.55 to 0.98; I² = 0%, two studies, N = 106), but not itching in two studies (RR 0.57, 95% CI 0.20 to 1.60; I² = 0%, two studies, N = 106).Very few studies only assessed children or included segmental vitiligo. We found one study of psychological interventions but we could not include the outcomes in our statistical analyses. We found no studies evaluating micropigmentation, depigmentation, or cosmetic camouflage. AUTHORS' CONCLUSIONS This review has found some evidence from individual studies to support existing therapies for vitiligo, but the usefulness of the findings is limited by the different designs and outcome measurements and lack of quality of life measures. There is a need for follow-up studies to assess permanence of repigmentation as well as high- quality randomised trials using standardised measures and which also address quality of life.
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Affiliation(s)
- Maxine E Whitton
- c/o Cochrane Skin Group, The University of Nottingham, Room A103, King's Meadow Campus, Lenton Lane, Nottingham, UK, NG7 2NR. .
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Daniel BS, Wittal R. Vitiligo treatment update. Australas J Dermatol 2014; 56:85-92. [DOI: 10.1111/ajd.12256] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Accepted: 08/16/2014] [Indexed: 11/30/2022]
Affiliation(s)
| | - Richard Wittal
- University of New South Wales; Sydney New South Wales Australia
- Skin and Cancer Foundation; Sydney New South Wales Australia
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Zhang Y, Mooneyan-Ramchurn JS, Zuo N, Feng Y, Xiao S. Vitiligo nonsurgical treatment: a review of latest treatment researches. Dermatol Ther 2014; 27:298-303. [PMID: 25041437 DOI: 10.1111/dth.12143] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Yanfei Zhang
- Department of Dermatology, The Second Affiliated Hospital, College of Medicine; Xi'an Jiaotong University; Xi'an Shaanxi Province China
| | | | - Nan Zuo
- Department of Dermatology, The Second Affiliated Hospital, College of Medicine; Xi'an Jiaotong University; Xi'an Shaanxi Province China
| | - Yiguo Feng
- Department of Dermatology, The Second Affiliated Hospital, College of Medicine; Xi'an Jiaotong University; Xi'an Shaanxi Province China
| | - Shengxiang Xiao
- Department of Dermatology, The Second Affiliated Hospital, College of Medicine; Xi'an Jiaotong University; Xi'an Shaanxi Province China
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Naini FF, Shooshtari AV, Ebrahimi B, Molaei R. The effect of pseudocatalase/superoxide dismutase in the treatment of vitiligo: A pilot study. J Res Pharm Pract 2014; 1:77-80. [PMID: 24991594 PMCID: PMC4076862 DOI: 10.4103/2279-042x.108375] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Objective: Pseudocatalase/superoxide dismutase (PSD) is a topical gel considered having therapeutic effects in vitiligo. This study was designed to evaluate the efficacy of this combination in vitiligo. Methods: This was a pilot randomized, double-blind, placebo-controlled trial on 46 symmetrical vitiligo lesions of limbs in 23 patients referring to dermatology clinics, Isfahan, Iran in 2010. Patients were received this formula or placebo gels for the right and left lesions. Lesion area and degree of pigmentation were assessed at baseline, 2, 4, and 6 months. Findings: There were no significant changes in lesion area and perifollicular pigmentation in each group (P > 0.05). Conclusion: The results indicated no significant therapeutic effect for PSD in vitiligo.
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Affiliation(s)
- Farahnaz Fatemi Naini
- Skin and Stem Cell Research Center, Tehran University of Medical Sciences, Tehran, Iran ; Skin Diseases and Leishmaniasis Research Center, Isfahan University of Medical Sciences, Isfahan, Iran ; Department of Dermatology, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Alireza Vaez Shooshtari
- Skin Diseases and Leishmaniasis Research Center, Isfahan University of Medical Sciences, Isfahan, Iran ; Department of Dermatology, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Bahareh Ebrahimi
- Skin Diseases and Leishmaniasis Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Razieh Molaei
- Cell and Molecular Research Center, Shahrekord University of Medical Sciences, Shahrekord, Iran
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Allam M, Riad H. Concise review of recent studies in vitiligo. Qatar Med J 2013; 2013:1-19. [PMID: 25003059 PMCID: PMC4080492 DOI: 10.5339/qmj.2013.10] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2012] [Accepted: 10/20/2013] [Indexed: 12/12/2022] Open
Abstract
Vitiligo is an acquired pigmentry disorder of the skin and mucous membranes which manifests as white macules and patches due to selective loss of melanocytes. Etiological hypotheses of vitiligo include genetic, immunological, neurohormonal, cytotoxic, biochemical, oxidative stress and newer theories of melanocytorrhagy and decreased melanocytes survival. There are several types of vitiligo which are usually diagnosed clinically and by using a Wood's lamp; also vitiligo may be associated with autoimmune diseases, audiological and ophthalmological findings or it can be a part of polyendocrinopathy syndromes. Several interventions are available for the treatment for vitiligo to stop disease progression and/or to attain repigmentation or even depigmentation. In this article, we will present an overall view of current standing of vitiligo research work especially in the etiological factors most notably the genetic components, also, types and associations and various and newer treatment modalities.
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Affiliation(s)
- Mohamed Allam
- Dermatology Department, Hamad Medical Corporation, Doha, Qatar
| | - Hassan Riad
- Dermatology Department, Rumailah Hospital, Hamad Medical Corporation, Doha, Qatar
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Lee BW, Schwartz RA, Hercogová J, Valle Y, Lotti TM. Vitiligo road map. Dermatol Ther 2013; 25 Suppl 1:S44-56. [PMID: 23237038 DOI: 10.1111/dth.12006] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Vitiligo is a depigmenting disorder stemming from melanocyte loss or dysfunction. It has a complex, multifaceted etiology. We constructed a "vitiligo road map," consisting of basic science, clinical, and treatment components, in order to better portray our current understanding of vitiligo pathogenesis and reflect upon novel biomarkers and therapeutic targets for future research. The melanocyte map elaborates on the molecular processes and intracellular signaling pathways initiated by various external autocrine/paracrine factors in representing normal melanocyte homeostatic functions modulating its viability, proliferation, differentiation, dendricity, migration, and melanogenic processes. This vitiligo map identifies known inducers/triggers of vitiligo onset and progression that cultivate a microenvironment for melanocyte disappearance, real or functional. This map describes the molecular mechanisms of currently utilized clinical and experimental treatments of vitiligo that facilitate repigmentation.
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Affiliation(s)
- Brian W Lee
- Dermatology and Pathology, New Jersey Medical School, Newark, New Jersey 07103-2714, USA
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27
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Eleftheriadou V, Thomas KS, Whitton ME, Batchelor JM, Ravenscroft JC. Which outcomes should we measure in vitiligo? Results of a systematic review and a survey among patients and clinicians on outcomes in vitiligo trials. Br J Dermatol 2013; 167:804-14. [PMID: 22591025 DOI: 10.1111/j.1365-2133.2012.11056.x] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Relevant and reliable outcomes play a crucial role in the correct interpretation and comparison of the results of clinical trials. There is a lack of consensus around methods of assessment and outcome measures for vitiligo, which makes it difficult to compare results of randomized controlled trials (RCTs) and perform meta-analysis. OBJECTIVES To describe the heterogeneity in outcome measures used in published RCTs of vitiligo treatments, and to report the most desirable outcomes from patients' and clinicians' perspectives. METHODS We conducted a systematic review of outcome measures used in RCTs as well as a survey of the most desirable outcomes identified by patients and clinicians as part of a Vitiligo Priority Setting Partnership. RESULTS Outcomes from 54 eligible trials were analysed and compared with outcomes suggested by patients and clinicians. In the systematic review, 25 different outcomes were reported. Only 22% of trials had clearly stated primary outcome measures. Repigmentation was the most frequently reported outcome in 96% of trials and was measured using 48 different scales. Only 9% of trials assessed quality of life. Thirteen per cent measured cessation of spreading of the disease and 17% of studies reported patients' opinions and satisfaction with the treatment. In contrast, out of 438 suggestions made by patients and clinicians, cosmetically acceptable repigmentation (rather than percentage of repigmentation) was the most desirable outcome (68%), followed by cessation of spread of vitiligo (15%), quality of life (8%) and maintenance of repigmentation (4%). CONCLUSIONS We propose that future vitiligo trials should include repigmentation, cosmetic acceptability of results, global assessment of the disease, quality of life, maintenance of repigmentation, stabilization of vitiligo and side-effects. International consensus among clinicians, researchers and patients is needed to establish an agreed core outcome set for future vitiligo trials.
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Affiliation(s)
- V Eleftheriadou
- Centre of Evidence Based Dermatology, University of Nottingham, Nottingham NG7 2NR, UK.
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Taieb A, Alomar A, Böhm M, Dell'anna ML, De Pase A, Eleftheriadou V, Ezzedine K, Gauthier Y, Gawkrodger DJ, Jouary T, Leone G, Moretti S, Nieuweboer-Krobotova L, Olsson MJ, Parsad D, Passeron T, Tanew A, van der Veen W, van Geel N, Whitton M, Wolkerstorfer A, Picardo M. Guidelines for the management of vitiligo: the European Dermatology Forum consensus. Br J Dermatol 2012; 168:5-19. [PMID: 22860621 DOI: 10.1111/j.1365-2133.2012.11197.x] [Citation(s) in RCA: 246] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The aetiopathogenic mechanisms of vitiligo are still poorly understood, and this has held back progress in diagnosis and treatment. Up until now, treatment guidelines have existed at national levels, but no common European viewpoint has emerged. This guideline for the treatment of segmental and nonsegmental vitiligo has been developed by the members of the Vitiligo European Task Force and other colleagues. It summarizes evidence-based and expert-based recommendations (S1 level).
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Affiliation(s)
- A Taieb
- Service de Dermatologie, CHU de Bordeaux, Bordeaux Cedex, France
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Bacigalupi RM, Postolova A, Davis RS. Evidence-based, non-surgical treatments for vitiligo: a review. Am J Clin Dermatol 2012; 13:217-37. [PMID: 22423621 DOI: 10.2165/11630540-000000000-00000] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Vitiligo is an acquired pigmentary disorder characterized by depigmented macules and patches secondary to the loss of functional melanocytes. It is a chronic disease that affects between 0.1% and 2% of the general population, affecting both sexes and all races. The appearance and the unpredictable course are psychologically and socially devastating. The success of current therapeutic options is limited. The objective of this review was to assess non-surgical treatments of vitiligo and to determine if comparing these studies can lead to (1) practical applications in the clinical setting and (2) recommendations for future research including study design and topics to be investigated further. Combination therapies were found to be more effective than monotherapy, and most combinations included a form of phototherapy, of which narrow-band-UVB was found to be most effective with the least adverse effects. Topical treatment with corticosteroids, immunomodulators, vitamin D analogs, and psoralens had mixed outcomes. Oral therapies including antioxidants were helpful adjuvants to treatment. Studies lacked consistent design, mechanism of disease assessment, and long-term follow-up. Sample size was also frequently limited. This review found that while several non-surgical therapies exist for the treatment of vitiligo, their usefulness, especially in the long term, is not well understood. Those studies that were able to elicit repigmentation often lacked an assessment on quality of life and/or patient satisfaction. More standardized methods of study design and assessment are needed to compare outcomes and make definitive conclusions on treatment effectiveness.
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Affiliation(s)
- Robert M Bacigalupi
- Department of Dermatology, Tulane University Health Sciences Center, New Orleans, LA 70118, USA
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Alghamdi KM, Kumar A, Taïeb A, Ezzedine K. Assessment methods for the evaluation of vitiligo. J Eur Acad Dermatol Venereol 2012; 26:1463-71. [PMID: 22416879 DOI: 10.1111/j.1468-3083.2012.04505.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
There is no standardized method for assessing vitiligo. In this article, we review the literature from 1981 to 2011 on different vitiligo assessment methods. We aim to classify the techniques available for vitiligo assessment as subjective, semi-objective or objective; microscopic or macroscopic; and as based on morphometry or colorimetry. Macroscopic morphological measurements include visual assessment, photography in natural or ultraviolet light, photography with computerized image analysis and tristimulus colorimetry or spectrophotometry. Non-invasive micromorphological methods include confocal laser microscopy (CLM). Subjective methods include clinical evaluation by a dermatologist and a vitiligo disease activity score. Semi-objective methods include the Vitiligo Area Scoring Index (VASI) and point-counting methods. Objective methods include software-based image analysis, tristimulus colorimetry, spectrophotometry and CLM. Morphometry is the measurement of the vitiliginous surface area, whereas colorimetry quantitatively analyses skin colour changes caused by erythema or pigment. Most methods involve morphometry, except for the chromameter method, which assesses colorimetry. Some image analysis software programs can assess both morphometry and colorimetry. The details of these programs (Corel Draw, Image Pro Plus, AutoCad and Photoshop) are discussed in the review. Reflectance confocal microscopy provides real-time images and has great potential for the non-invasive assessment of pigmentary lesions. In conclusion, there is no single best method for assessing vitiligo. This review revealed that VASI, the rule of nine and Wood's lamp are likely to be the best techniques available for assessing the degree of pigmentary lesions and measuring the extent and progression of vitiligo in the clinic and in clinical trials.
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Affiliation(s)
- K M Alghamdi
- Dermatology Department, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
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Vitiligo: a comprehensive overview Part II: treatment options and approach to treatment. J Am Acad Dermatol 2011; 65:493-514. [PMID: 21839316 DOI: 10.1016/j.jaad.2010.10.043] [Citation(s) in RCA: 96] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2010] [Revised: 09/17/2010] [Accepted: 10/01/2010] [Indexed: 02/04/2023]
Abstract
Vitiligo is a common skin disorder that results in depigmentation. With the appropriate management, many patients can minimize disease progression, attain repigmentation, and achieve cosmetically pleasing results. There are numerous medical and surgical treatments aimed at repigmentation; therapies for depigmentation are available for patients with recalcitrant or advanced disease. The use of cosmetics at all stages of treatment may be vital to the patient's quality of life. Understanding all the available options helps choose the appropriate treatment plan and tailor it to your patient. Part II of this two-part series on vitiligo discusses the indications for, evidence behind, and adverse effects associated with many of the therapies used for vitiligo. Both conventional medical and surgical options are discussed in addition to several alternative and promising new therapies.
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Bafana A, Dutt S, Kumar A, Kumar S, Ahuja PS. The basic and applied aspects of superoxide dismutase. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.molcatb.2010.11.007] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Garg BJ, Saraswat A, Bhatia A, Katare OP. Topical treatment in vitiligo and the potential uses of new drug delivery systems. Indian J Dermatol Venereol Leprol 2011; 76:231-8. [PMID: 20445292 DOI: 10.4103/0378-6323.62961] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Vitiligo is a psychologically devastating condition. Topical therapy is employed as first-line treatment in localized vitiligo. Currently, several topical agents are available in many forms viz. methoxsalen (solution and cream), trioxsalen (solution), corticosteroids (gel, cream, ointment and solution) and calcineurin inhibitors (ointment and cream). Although topical therapy has an important position in vitiligo treatment, side-effects or poor efficacy affect their utility and patient compliance. Novel drug delivery strategies can play a pivotal role in improving the topical delivery of various drugs by enhancing their epidermal localization with a concomitant reduction in their side-effects and improving their effectiveness. The current review emphasizes the potential of various phospholipid based carriers viz. liposomes, transferosomes, ethosomes, lipid emulsions, solid lipid nanoparticles and organogels in optimizing and enhancing the topical delivery of anti-vitiligo agents, whilst reducing the side effects of drugs commonly used in its topical treatment.
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Affiliation(s)
- Bhawna Jain Garg
- University Institute of Pharmaceutical, Sciences-UGC Center of Advanced Studies, Panjab University, Chandigarh, India
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Syed ZU, Hamzavi IH. Photomedicine and phototherapy considerations for patients with skin of color. PHOTODERMATOLOGY PHOTOIMMUNOLOGY & PHOTOMEDICINE 2011; 27:10-6. [DOI: 10.1111/j.1600-0781.2010.00554.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
The acquired depigmenting disorder of vitiligo affects an estimated 1% of the world population and constitutes one of the commonest dermatoses. Although essentially asymptomatic, the psychosocial impact of vitiligo can be severe. The cause of vitiligo remains enigmatic, hampering efforts at successful therapy. The underlying pathogenesis of the pigment loss has, however, been clarified to some extent in recent years, offering the prospect of effective treatment, accurate prognosis and rational preventative strategies. Vitiligo occurs when functioning melanocytes disappear from the epidermis. A single dominant pathway is unlikely to account for all cases of melanocyte loss in vitiligo; rather, it is the result of complex interactions of biochemical, environmental and immunological events, in a permissive genetic milieu. ROS (reactive oxygen species) and H2O2 in excess can damage biological processes, and this situation has been documented in active vitiligo skin. Tyrosinase activity is impaired by excess H2O2 through oxidation of methionine residues in this key melanogenic enzyme. Mechanisms for repairing this oxidant damage are also damaged by H2O2, compounding the effect. Numerous proteins and peptides, in addition to tyrosinase, are similarly affected. It is possible that oxidant stress is the principal cause of vitiligo. However, there is also ample evidence of immunological phenomena in vitiligo, particularly in established chronic and progressive disease. Both innate and adaptive arms of the immune system are involved, with a dominant role for T-cells. Sensitized CD8+ T-cells are targeted to melanocyte differentiation antigens and destroy melanocytes either as the primary event in vitiligo or as a secondary promotive consequence. There is speculation on the interplay, if any, between ROS and the immune system in the pathogenesis of vitiligo. The present review focuses on the scientific evidence linking alterations in ROS and/or T-cells to vitiligo.
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Abstract
BACKGROUND Around one per cent of the world's population has vitiligo, a disease which causes white patches on the skin. There are a variety of treatments available, most of which are unsatisfactory. OBJECTIVES To assess all interventions used to manage vitiligo. SEARCH STRATEGY In November 2009 we updated searches of the Cochrane Skin Group Specialised Register, the Cochrane Central Register of Controlled Trials in The Cochrane Library (Issue 4, 2009), MEDLINE, EMBASE, AMED, PsycINFO, LILACS and ongoing trials databases. SELECTION CRITERIA Randomised controlled trials (RCTs). DATA COLLECTION AND ANALYSIS At least 2 review authors independently assessed study eligibility and methodological quality, and carried out data extraction. Two of the 57 included studies could be combined for meta-analysis. MAIN RESULTS In this update, 57 trials, including 19 from the original review, were assessed with 3139 participants. Most of the RCTs, which covered a wide range of interventions, had fewer than 50 participants. All of the studies assessed repigmentation, 6 measured cessation of spread, and 5 investigated the effect of treatment on quality of life.Most of the studies assessed combination therapies which generally reported better results. New interventions include monochromatic excimer light (MEL), Polypodium leucotomos, melanocyte transplantation, oral antioxidants, Chinese zengse pill, and pimecrolimus. We analysed the data from 28 studies that met our outcome criteria of improvement in quality of life and greater than 75% repigmentation.Fifteen analyses from studies comparing various interventions showed a statistically significant difference between the proportions of participants achieving more than 75% repigmentation. The majority of analyses showing statistically significant differences were from studies that assessed combination interventions which generally included some form of light treatment.Topical preparations, in particular corticosteroids, reported most adverse effects. However, in the combination studies it was difficult to ascertain which treatment caused these effects. None of the studies was able to demonstrate long-term benefits. Very few studies were conducted on children or included segmental vitiligo. We found one study of psychological interventions and none evaluating micropigmentation, depigmentation, or cosmetic camouflage. AUTHORS' CONCLUSIONS This review has found some evidence from individual studies to support existing therapies for vitiligo, but the usefulness of the findings is limited by the different designs and outcome measurements and lack of quality of life measures. There is a need for follow-up studies to assess permanence of repigmentation as well as high quality randomised trials using standardised measures and which also address quality of life.
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Affiliation(s)
- Maxine E Whitton
- c/o Cochrane Skin Group, The University of Nottingham, Room A103, King's Meadow Campus, Lenton Lane, Nottingham, UK, NG7 2NR
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