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Chummun Phul I, Gómez-Llonín A, Bhaw-Luximon A. From traditional medicine to nanomedicine: potential of Ginkgo biloba extracts in treating inflammatory skin diseases. RSC Med Chem 2024; 15:2643-2656. [PMID: 39149101 PMCID: PMC11324057 DOI: 10.1039/d4md00194j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Accepted: 06/10/2024] [Indexed: 08/17/2024] Open
Abstract
The use of plant extracts as a potential cure for various conditions has moved from traditional medicine to evidence-based medicine. Skin diseases have been addressed since time immemorial using plant extracts through observational and traditional knowledge and passed on through generations. With the advent of modern techniques, the molecular mechanisms of action of plant extracts/isolates are being deciphered with more precision, and more nanomedicine-based therapies are being studied to improve their therapeutic efficacy and stability. The leaves and seeds of Ginkgo biloba (G. biloba), an ancient medicinal tree species, have been used in Chinese herbal medicine for thousands of years. G. biloba extracts have been widely studied as a neuroprotective and anti-ischaemic drug for ischaemia-reperfusion injuries in the heart, lungs, brain, kidneys, and other organs. However, the use of G. biloba can be accompanied with side effects and drug interactions. Although, there is now a growing interest for its use in skincare, the mechanisms of action of the extract are not fully understood and vital aspects of G. biloba, such as its neuroprotective and angiogenic properties contributing to the treatment of inflammatory skin diseases and skin ageing, are yet to be investigated. This review critically discusses the mechanisms of action of different constituents of G. biloba extracts linked to their potential interference in the molecular mechanisms underlying the pathogenesis of inflammatory skin diseases. In addition to its ability to act on oxidative stress, G. biloba can regulate angiogenesis through its compounds such as ginkgetin or ginkgolide K, which either inhibit aberrant angiogenesis in eczema/psoriasis or increase microcirculation during skin ageing. G. biloba may also contribute to the control of pruritus in atopic dermatitis via a neuroprotective and anti-inflammatory mechanism by suppressing JAK2/STAT3 signalling pathways. This review also highlights nanomedicine strategies to decrease the side effects and enhance the efficacy of the extracts. Similar strategies have been successfully used for anticancer molecules in targeted chemotherapy and iron delivery in anaemia treatment.
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Affiliation(s)
- Itisha Chummun Phul
- Biomaterials, Drug Delivery & Nanotechnology Unit, Centre for Biomedical & Biomaterials Research (CBBR), University of Mauritius 80837 Réduit Mauritius
| | - Andrea Gómez-Llonín
- Biomaterials, Drug Delivery & Nanotechnology Unit, Centre for Biomedical & Biomaterials Research (CBBR), University of Mauritius 80837 Réduit Mauritius
| | - Archana Bhaw-Luximon
- Biomaterials, Drug Delivery & Nanotechnology Unit, Centre for Biomedical & Biomaterials Research (CBBR), University of Mauritius 80837 Réduit Mauritius
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Pocino K, Carnazzo V, Stefanile A, Basile V, Guerriero C, Marino M, Rigante D, Basile U. Tumor Necrosis Factor-Alpha: Ally and Enemy in Protean Cutaneous Sceneries. Int J Mol Sci 2024; 25:7762. [PMID: 39063004 PMCID: PMC11276697 DOI: 10.3390/ijms25147762] [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: 06/13/2024] [Revised: 07/12/2024] [Accepted: 07/14/2024] [Indexed: 07/28/2024] Open
Abstract
Skin is the forestage for a series of many-sided functions of tumor necrosis factor-alpha (TNF-α), a proinflammatory cytokine with staggering versatility and sizable implications for tissue homeostasis, immune responses, angiogenesis, apoptosis, local and systemic inflammation. An aberrant TNF-α-mediated crosstalk has been linked to the pathogenesis of acute and chronic skin inflammatory diseases, and indeed, TNF-α dysregulation can contribute to the development and progression of psoriasis, vitiligo, local damage following exposition to ultraviolet light radiations, cutaneous lupus erythematosus, and acne vulgaris. Therapies that target TNF-α are conspicuously used in the treatment of different skin disorders, aiming to modulate the in vivo immune functions triggered by many cutaneous cells, including keratinocytes, mast cells, or Langerhans cells, and reduce inflammation taking place within the skin. Herein, we focus on the key relationships between TNF-α and distinct skin non-neoplastic inflammatory or physiologic conditions, showing that a natural induction of TNF-α may have a protective significance but that TNF-α overproduction may be harmful or even lethal. Many questions remain unraveled in the therapeutic practice, and caution should be exercised due to eventual backlashes exerted by TNF-α in maintaining skin health or in provoking skin disease.
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Affiliation(s)
- Krizia Pocino
- Unità Operativa Complessa di Patologia Clinica, Ospedale San Pietro Fatebenefratelli, 00189 Rome, Italy; (K.P.); (A.S.)
| | - Valeria Carnazzo
- Department of Clinical Pathology, Santa Maria Goretti Hospital, 04100 Latina, Italy; (V.C.); (U.B.)
| | - Annunziata Stefanile
- Unità Operativa Complessa di Patologia Clinica, Ospedale San Pietro Fatebenefratelli, 00189 Rome, Italy; (K.P.); (A.S.)
| | - Valerio Basile
- Clinical Pathology Unit and Cancer Biobank, Department of Research and Advanced Technologies, Regina Elena National Cancer Institute IRCCS, 00144 Rome, Italy;
| | - Cristina Guerriero
- Department of Dermatology, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy;
| | - Mariapaola Marino
- Dipartimento di Medicina e Chirurgia Traslazionale, Università Cattolica Sacro Cuore, 00168 Rome, Italy
- Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy;
| | - Donato Rigante
- Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy;
- Department of Life Sciences and Public Health, Università Cattolica Sacro Cuore, 00168 Rome, Italy
| | - Umberto Basile
- Department of Clinical Pathology, Santa Maria Goretti Hospital, 04100 Latina, Italy; (V.C.); (U.B.)
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Atefi N, Ziaeifar E, Seirafianpour F, Sadeghzadeh-Bazargan A, Amin NG, Mozafarpoor S, Abouie A, Jafari MA, Goodarzi A. Evaluation of efficacy and safety of vitiligo treatment with micro-needling combined with N-Acetylcysteine and micro-needling alone: A double-blinded randomized controlled clinical trial. J Cosmet Dermatol 2024; 23:2220-2230. [PMID: 38470079 DOI: 10.1111/jocd.16274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 02/20/2024] [Accepted: 02/29/2024] [Indexed: 03/13/2024]
Abstract
INTRODUCTION Vitiligo is a skin pigmentation disorder caused by the selective degradation of melanocytes. This study investigates the therapeutic effects of microneedling with and without N-acetylcysteine (NAC) in patients with persistent and limited vitiligo. METHOD This research employed a clinical trial design with double-blind randomization. Individuals affected by vitiligo and seeking treatment at Rasool Akram Medical Complex were divided into two separate treatment groups. In the intervention group, 24 affected areas underwent meso-microneedling using 5% NAC ampoules over six sessions, in addition to the application of 4.7% NAC cream once daily on the specified area. Conversely, the control group, consisting of 22 lesions, underwent microneedling using distilled water during six sessions. The severity of lesions and the extent of repigmentation were gauged using the Modified VETI Score. Assessment of treatment efficacy was determined through both physician evaluations and patient feedback. RESULTS Twenty patients with a mean age of 36.4 years were recruited. The mean percentage of lesions and their intensity were significantly improved 2 weeks after the third session and 1 month after the end of the treatment (p < 0.01). There was no statistically significant difference between the intervention and control groups. Gender, age, family history, duration of disease, duration of disease stability, and history of hypothyroidism had no statistically significant relationship with patients' treatment outcomes (p > 0.05). CONCLUSION Microneedling with or without the application of NAC appears to be an effective treatment option for persistent vitiligo lesions. However, despite the higher improvement rate with the application of NAC, the difference was not significant.
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Affiliation(s)
- Najmolsadat Atefi
- Department of Dermatology, Rasool Akram Medical Complex Clinical Research Development Center (RCRDC), School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Elham Ziaeifar
- Department of Dermatology, Rasool Akram Medical Complex Clinical Research Development Center (RCRDC), School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | | | - Afsaneh Sadeghzadeh-Bazargan
- Department of Dermatology, Rasool Akram Medical Complex Clinical Research Development Center (RCRDC), School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Nazila Ghoreishi Amin
- Department of Radiology, University of Southern California (USC), Los Angeles, California, USA
| | - Samaneh Mozafarpoor
- Department of Dermatology, Skin Diseases and Leishmaniasis Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Abolfazl Abouie
- Department of Radiology, Iran University of Medical Sciences (IUMS), Tehran, Iran
| | - Mohammad Amin Jafari
- Department of Dermatology, Rasool Akram Medical Complex Clinical Research Development Center (RCRDC), School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Azadeh Goodarzi
- Department of Dermatology, Rasool Akram Medical Complex Clinical Research Development Center (RCRDC), School of Medicine, Iran University of Medical Sciences, Tehran, Iran
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Hirobe T. Role of Dermal Factors Involved in Regulating the Melanin and Melanogenesis of Mammalian Melanocytes in Normal and Abnormal Skin. Int J Mol Sci 2024; 25:4560. [PMID: 38674144 PMCID: PMC11049857 DOI: 10.3390/ijms25084560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Revised: 04/13/2024] [Accepted: 04/14/2024] [Indexed: 04/28/2024] Open
Abstract
Mammalian melanin is produced in melanocytes and accumulated in melanosomes. Melanogenesis is supported by many factors derived from the surrounding tissue environment, such as the epidermis, dermis, and subcutaneous tissue, in addition to numerous melanogenesis-related genes. The roles of these genes have been fully investigated and the molecular analysis has been performed. Moreover, the role of paracrine factors derived from epidermis has also been studied. However, the role of dermis has not been fully studied. Thus, in this review, dermis-derived factors including soluble and insoluble components were overviewed and discussed in normal and abnormal circumstances. Dermal factors play an important role in the regulation of melanogenesis in the normal and abnormal mammalian skin.
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Affiliation(s)
- Tomohisa Hirobe
- Department of Molecular Imaging and Theranostics, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
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Jin R, Hu W, Zhou M, Lin F, Xu A. Caffeic acid derivative WSY6 protects melanocytes from oxidative stress by reducing ROS production and MAPK activation. Heliyon 2024; 10:e24843. [PMID: 38304822 PMCID: PMC10831733 DOI: 10.1016/j.heliyon.2024.e24843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 01/15/2024] [Accepted: 01/15/2024] [Indexed: 02/03/2024] Open
Abstract
Purpose Vitiligo is a chronic depigmentation disease caused by a loss of functioning melanocytes and melanin from the epidermis. Oxidative stress-induced damage to melanocytes is key in the pathogenesis of vitiligo. WSY6 is a caffeic acid derivative synthesized from epigallocatechin-3-gallate (EGCG). This study is to investigate whether the new chemical WSY6 protected melanocytes from H2O2-induced cell damage and to elucidate the underlying molecular mechanism. Patients and methods The present study compared the antioxidative potential of WSY6 with EGCG in hydrogen peroxide (H2O2)-treated PIG1 cells. Western blotting was used to study the protein expression of cyto-c, cleaved-caspase3, cleaved-caspase9, and the activation of MAPK family members, including p38, ERK1/2, JNK and their phosphorylation in melanocytes. ROS assay kit to detect intracellular reactive oxygen species production; CCK8 and lactate dehydrogenase leak assay to detect cytotoxicity. Results EGCG and WSY6 ameliorated H2O2-induced oxidative stress damage in PIG1 cells in a does-dependent manner, while WSY6 was much more effective. WSY6 reduced cellular ROS production, cytochrome c release, downregulated caspase-3 and caspase-9 activation. MAPK pathway signaling including phosphorylated p38, ERK and JNK were observed under oxidative stress and can be much protected by pre-treatment of WSY6. Conclusion These results indicated that WSY6 could be a more powerful antioxidant than EGCG and protect melanocytes against oxidative cytotoxicity.
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Affiliation(s)
| | | | - Miaoni Zhou
- Department of Dermatology, Hangzhou Third People's Hospital, Hangzhou, 310009, PR China
| | - Fuquan Lin
- Department of Dermatology, Hangzhou Third People's Hospital, Hangzhou, 310009, PR China
| | - Aie Xu
- Department of Dermatology, Hangzhou Third People's Hospital, Hangzhou, 310009, PR China
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Ni Y, Zhang Y, Sun J, Zhao L, Wu B, Ye J. The effect of antioxidant dietary supplements and diet-derived circulating antioxidants on vitiligo outcome: evidence from genetic association and comprehensive Mendelian randomization. Front Nutr 2024; 10:1280162. [PMID: 38274214 PMCID: PMC10808665 DOI: 10.3389/fnut.2023.1280162] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 12/27/2023] [Indexed: 01/27/2024] Open
Abstract
Background Previous studies have indicated that antioxidant diets may have a positive impact on vitiligo by interfering with oxidative stress mechanisms. However, there has been a lack of research utilizing the Mendelian randomization (MR) method to analyze the relationship between antioxidant diet intake and vitiligo. Methods In this study, we employed both univariate Mendelian randomization (UVMR) and multivariate Mendelian randomization (MVMR) approaches. The specific antioxidant dietary supplements (such as coffee intake, green tea intake, herbal tea intake, standard tea intake, and average weekly red wine intake) as well as diet-derived circulating antioxidants, including Vit. C (ascorbate), Vit. E (α-tocopherol), Vit. E (γ-tocopherol), Carotene, Vit. A (retinol), Zinc, and Selenium (N = 2,603-428,860) were significantly associated with independent single-nucleotide polymorphisms (SNPs). We obtained pooled statistics on vitiligo from a meta-analysis of three genome-wide association studies (GWASs) of European ancestry, including 4,680 cases and 39,586 controls. Inverse variance weighted (IVW) was employed as the primary analytical method, and sensitivity analysis was conducted to assess the robustness of the main findings. Results Genetically, coffee intake [odds ratio (OR) = 0.17, 95% confidence interval (CI) 0.07-0.37, p = 1.57 × 10-5], average weekly red wine intake (OR = 0.28, 95% CI 0.08-1.00, p = 0.049), and standard tea intake (OR = 0.99, 95% CI 0.98-0.99, p = 5.66 × 10-7) were identified as protective factors against vitiligo. However, no causal effect between the intake of other antioxidant diets and vitiligo was found. Moreover, no instances of pleiotropy or heterogeneity were observed in this study. Conclusion Our study indicates that coffee, standard tea, and red wine consumption can potentially reduce the risk of vitiligo. However, there is insufficient evidence to support that other antioxidant diets have a significant effect on vitiligo.
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Affiliation(s)
- Yao Ni
- Nanjing University of Traditional Chinese Medicine, Nanjing, Jiangsu, China
- Department of Dermatovenereology, Chengdu Second People’s Hospital, Chengdu, Sichuan, China
| | - Youqian Zhang
- Health Science Center, Yangtze University, Jingzhou, Hubei, China
| | - Jingying Sun
- Department of Dermatovenereology, Chengdu Second People’s Hospital, Chengdu, Sichuan, China
| | - Lingyi Zhao
- Department of Dermatovenereology, Chengdu Second People’s Hospital, Chengdu, Sichuan, China
| | - Bo Wu
- Department of Dermatovenereology, Chengdu Second People’s Hospital, Chengdu, Sichuan, China
| | - Jianzhou Ye
- Nanjing University of Traditional Chinese Medicine, Nanjing, Jiangsu, China
- Department of Dermatovenereology, The First Affiliated Hospital of Yunnan University of Traditional Chinese Medicine, Kunming, Yunnan, China
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Winkie MJ, Sakunchotpanit G, Salazar CE, Gunasekera NS, Buzney EA, Nambudiri VE. A focused review of visible light therapies for vitiligo. PHOTODERMATOLOGY, PHOTOIMMUNOLOGY & PHOTOMEDICINE 2024; 40:e12939. [PMID: 38084061 DOI: 10.1111/phpp.12939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 11/16/2023] [Accepted: 11/28/2023] [Indexed: 01/31/2024]
Abstract
BACKGROUND Vitiligo can be challenging to treat and exhibit an unpredictable clinical course. Phototherapy in the form of visible light can achieve both repigmentation and depigmentation outcomes in vitiligo, with minimal associated adverse events. This review focuses on the mechanistic understandings and clinical outcomes of visible light-based treatments for vitiligo. METHODS Articles were retrieved from PubMed starting from May 1965 until August 2023, yielding 496 unique articles. We conducted title, abstract, and full-text screening to identify articles describing the use of visible light (380-750 nm), either as part of combination therapy or as monotherapy, for repigmentation or depigmentation treatment in vitiligo. RESULTS Twenty-seven articles met inclusion criteria, offering preclinical and clinical data regarding the utilization of helium-neon laser (red light) and blue light-emitting diodes (LEDs) as methods of repigmentation therapy in vitiligo. Preclinical and clinical data on the utilization of Q-switched ruby laser (694 nm) and frequency-doubled (FD) Nd:YAG laser (532 nm) for vitiligo depigmentation therapy were also identified. CONCLUSION While limited by small studies and a lack of standardized administration of phototherapy, the evidence for visible light's effectiveness in managing vitiligo is encouraging. Red light therapy using He-Ne lasers and blue light therapy via LEDs can stimulate repigmentation in patients with vitiligo with minimal adverse events. Q-switched ruby and FD Nd:YAG lasers provide viable, visible light depigmentation options, either alone or with topical agents. With limited clinical data, larger studies are needed to validate the efficacy of visible light therapy in treating vitiligo and to better understand its long-term outcomes.
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Affiliation(s)
- Mitchell J Winkie
- Department of Dermatology, Brigham and Women's Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
| | - Goranit Sakunchotpanit
- Department of Dermatology, Brigham and Women's Hospital, Boston, Massachusetts, USA
- Tufts University School of Medicine, Boston, Massachusetts, USA
| | - Carlos E Salazar
- Department of Dermatology, Brigham and Women's Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
| | - Nicole S Gunasekera
- Department of Dermatology, Brigham and Women's Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
| | - Elizabeth A Buzney
- Department of Dermatology, Brigham and Women's Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
| | - Vinod E Nambudiri
- Department of Dermatology, Brigham and Women's Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
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Kim NH, Lee CH, Lee AY. Extraciliary OFD1 Is Involved in Melanocyte Survival through Cell Adhesion to ECM via Paxillin. Int J Mol Sci 2023; 24:17528. [PMID: 38139355 PMCID: PMC10743763 DOI: 10.3390/ijms242417528] [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: 11/09/2023] [Revised: 12/13/2023] [Accepted: 12/14/2023] [Indexed: 12/24/2023] Open
Abstract
Primary cilia play a significant role in influencing cell fate, including apoptosis in multiple cell types. In the lesional epidermis of vitiligo patients, a reduced number of ciliated cells was observed. Our study also revealed a downregulation of oral-facial digital syndrome type 1 (OFD1) in the affected skin of vitiligo patients. However, it remains unknown whether primary cilia are involved in the control of melanocyte apoptosis. While both intraflagellar transport 88 (IFT88) and retinitis pigmentosa GTPase regulator-interacting protein-1 like (RPGRIP1L) are associated with ciliogenesis in melanocytes, only the knockdown of OFD1, but not IFT88 and RPGRIP1L, resulted in increased melanocyte apoptosis. OFD1 knockdown led to a decrease in the expression of proteins involved in cell-extracellular matrix (ECM) interactions, including paxillin. The OFD1 amino acid residues 601-1012 interacted with paxillin, while the amino acid residues 1-601 were associated with ciliogenesis, suggesting that the OFD1 domains responsible for paxillin binding are distinct from those involved in ciliogenesis. OFD1 knockdown, but not IFT88 knockdown, inhibited melanocyte adhesion to the ECM, a defect that was restored by paxillin overexpression. In summary, our findings indicate that the downregulation of OFD1 induces melanocyte apoptosis, independent of any impairment in ciliogenesis, by reducing melanocyte adhesion to the ECM via paxillin.
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Affiliation(s)
- Nan-Hyung Kim
- Department of Dermatology, Dongguk University Ilsan Hospital, 814 Siksa-dong, Ilsandong-gu, Goyang-si 10326, Republic of Korea
| | - Chang Hoon Lee
- College of Pharmacy, Dongguk University, Seoul 04620, Republic of Korea;
| | - Ai-Young Lee
- Department of Dermatology, Dongguk University Ilsan Hospital, 814 Siksa-dong, Ilsandong-gu, Goyang-si 10326, Republic of Korea
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Liang X, Guo F, Cai X, Wang J, Chen J, Liu L, Chen Y, Liu F, Du Y, Li L, Li X. Association between vitiligo and sexual dysfunction: current evidence. Ann Med 2023; 55:946-953. [PMID: 36892992 PMCID: PMC10795651 DOI: 10.1080/07853890.2023.2182906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Accepted: 02/10/2023] [Indexed: 03/10/2023] Open
Abstract
BACKGROUND We discovered that vitiligo was associated with sexual dysfunction in clinical diagnosis and treatment; however, no further analysis had been performed due to a lack of data. OBJECTIVE This study aimed to clarify the relationship between vitiligo and sexual dysfunction. METHODS We searched six databases (PubMed, Embase, Cochrane, China National Knowledge Infrastructure, China Science and Technology Journal, and Wanfang Data Knowledge Service Platform) for nearly 40 years. RESULTS According to the search strategy, 91 relevant studies were retrieved, of which 4 were included in the analysis. The Arizona Sexual Experience Scale (ASEX) score (mean difference [MD] 4.96, 95% confidence interval [CI] 2.78-7.13, p < 0.00001) was higher in the vitiligo group than in the control group. The Arabic version of the Female Sexual Function Index (AVFSFI) score (mean difference [MD] - 3.40, 95% confidence interval [CI] - 5.49 to -1.31, p = 0.001) was lower in the vitiligo group than in the control group. CONCLUSIONS Patients with vitiligo were found to be at greater risk of sexual dysfunction. Moreover, the association between vitiligo and sexual dysfunction was stronger in women than in men.Key MessagesPatients with vitiligo were found to be at greater risk of sexual dysfunction.The association between vitiligo and sexual dysfunction was stronger in women than in men.
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Affiliation(s)
- Xin Liang
- Chinese medicine department, Songnan Town Community Health Service Center, Shanghai, China
| | - Fei Guo
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xiaoce Cai
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Institute of Dermatology, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Jiao Wang
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Institute of Dermatology, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Jiale Chen
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Institute of Dermatology, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Li Liu
- Chinese medicine department, Songnan Town Community Health Service Center, Shanghai, China
| | - Yan Chen
- Chinese medicine department, Songnan Town Community Health Service Center, Shanghai, China
| | - Fang Liu
- Chinese medicine department, Songnan Town Community Health Service Center, Shanghai, China
| | - Yuhua Du
- Chinese medicine department, Songnan Town Community Health Service Center, Shanghai, China
| | - Lei Li
- Chinese medicine department, Songnan Town Community Health Service Center, Shanghai, China
| | - Xin Li
- Chinese medicine department, Songnan Town Community Health Service Center, Shanghai, China
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Institute of Dermatology, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
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10
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Kim NH, Kim HJ, Lee AY. Aquaporin-3 Downregulation in Vitiligo Keratinocytes Increases Oxidative Stress of Melanocytes. Biomol Ther (Seoul) 2023; 31:648-654. [PMID: 37818624 PMCID: PMC10616513 DOI: 10.4062/biomolther.2023.112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 07/25/2023] [Accepted: 08/08/2023] [Indexed: 10/12/2023] Open
Abstract
Oxidative stress-induced melanocyte apoptosis is linked to the immune system and plays a critical role in the pathogenesis of vitiligo. Aquaporin-3 (AQP3), which is downregulated in vitiligo keratinocytes, regulates intracellular H2O2 accumulation. However, the role of AQP3 in oxidative stress is uncertain in vitiligo. This study investigated the effect of downregulated AQP3 on oxidative stress in vitiligo using lesional and non-lesional skin specimen sets from vitiligo patients and primary cultured adult normal human epidermal keratinocytes, with or without downregulation and overexpression of AQP3 in the presence or absence of H2O2 treatment. The levels of nuclear factor E2-related factor 2 (NRF2) and/or its main target, NAD(P)H quinone dehydrogenase 1 (NQO-1), were lower in the lesional keratinocytes and cultured keratinocytes with AQP3 knockdown, but were increased in keratinocytes upon AQP3 overexpression. Ratios of NRF2 nuclear translocation and NQO-1 expression levels were further reduced in AQP3-knockdown keratinocytes following H2O2 treatment. The conditioned media from AQP3-knockdown keratinocytes treated with H2O2 contained higher concentrations of reactive oxygen species (ROS). Moreover, the number of viable melanocytes was reduced when the conditioned media were added to the culture media. Overall, AQP3 downregulation in the keratinocytes of patients with vitiligo can induce oxidative stress in neighboring melanocytes, leading to melanocyte death.
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Affiliation(s)
- Nan-Hyung Kim
- Department of Dermatology, Dongguk University School of Medicine, Goyang 10326, Republic of Korea
| | - Ha Jung Kim
- Department of Dermatology, Dongguk University School of Medicine, Goyang 10326, Republic of Korea
| | - Ai-Young Lee
- Department of Dermatology, Dongguk University School of Medicine, Goyang 10326, Republic of Korea
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Kaushik H, Kumar V, Parsad D. Mitochondria-Melanocyte cellular interactions: An emerging mechanism of vitiligo pathogenesis. J Eur Acad Dermatol Venereol 2023; 37:2196-2207. [PMID: 36897230 DOI: 10.1111/jdv.19019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Accepted: 02/07/2023] [Indexed: 03/11/2023]
Abstract
Mitochondria has emerged as a potential modulator of melanocyte function other than just meeting its cellular ATP demands. Mitochondrial DNA defects are now an established cause of maternal inheritance diseases. Recent cellular studies have highlighted the mitochondrial interaction with other cellular organelles that lead to disease conditions such as in Duchenne muscular dystrophy, where defective mitochondria was found in melanocytes of these patients. Vitiligo, a depigmentory ailment of the skin, is another such disorder whose pathogenesis is now found to be associated with mitochondria. The complete absence of melanocytes at the lesioned site in vitiligo is a fact; however, the precise mechanism of this destruction is still undefined. In this review we have tried to discuss and link the emerging facts of mitochondrial function or its inter- and intra-organellar communications in vitiligo pathogenesis. Mitochondrial close association with melanosomes, molecular involvement in melanocyte-keratinocyte communication and melanocyte survival are new paradigm of melanogenesis that could ultimately account for vitiligo. This definitely adds the new dimensions to our understanding of vitiligo, its management and designing of future mitochondrial targeted therapy for vitiligo.
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Affiliation(s)
- Hitaishi Kaushik
- Department of Dermatology, Venereology & Leprology, PGIMER, Chandigarh, 160012, India
| | - Vinod Kumar
- Department of Dermatology, Venereology & Leprology, PGIMER, Chandigarh, 160012, India
| | - Davinder Parsad
- Department of Dermatology, Venereology & Leprology, PGIMER, Chandigarh, 160012, India
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12
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Ainiwaer P, Li Z, Zang D, Jiang L, Zou G, Aisa HA. Ruta graveolens: Boost Melanogenic Effects and Protection against Oxidative Damage in Melanocytes. Antioxidants (Basel) 2023; 12:1580. [PMID: 37627575 PMCID: PMC10451875 DOI: 10.3390/antiox12081580] [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: 07/15/2023] [Revised: 08/02/2023] [Accepted: 08/05/2023] [Indexed: 08/27/2023] Open
Abstract
Vitiligo, an acquired depigmentation disorder, is characterized by the loss of functional melanocytes and epidermal melanin. In recent years, research has focused on promoting melanin biosynthesis and protecting melanocytes to reduce stress-related damage for the purpose of applying it to vitiligo treatment. Ruta graveolens L. has been utilized as a medicinal herb in diverse traditional medicine systems to address conditions like vitiligo. In this investigation, we isolated and purified 16 unique alkaloid compounds from the chloroform extracts of R. graveolens, encompassing a new quinoline alkaloid and several recognized compounds. Bioactivity analysis showed that compound 13, an alkaloid derived from R. graveolens, promotes melanin production while protecting PIG3V melanocytes against 4-tert-butylphenol (4-TBP)-induced oxidative damage by downregulating endoplasmic reticulum (ER) stress and pro-inflammatory cytokines through interleukin-6 (IL-6) regulation. Additionally, the compound suppressed the expression of Bip, IRE1, p-IRE1, and XBP-1 proteins, suggesting a potential antioxidant function. These findings suggest that compound 13 isolated from R. graveolens can augment melanogenesis in melanocytes, reduce endoplasmic reticulum (ER) stress, and ameliorate vitiligo exacerbation. The melanogenic activity observed in the chloroform fraction emphasizes R. graveolens's potential as a novel therapeutic target for vitiligo treatment, warranting further exploration in future studies.
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Affiliation(s)
- Pazilaiti Ainiwaer
- State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization, Key Laboratory of Plants Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, South Beijing Road 40-1, Urumqi 830011, China; (P.A.); (Z.L.); (D.Z.); (L.J.); (G.Z.)
- University of Chinese Academy of Sciences, No.19(A) Yuquan Road, Beijing 100049, China
| | - Zuopeng Li
- State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization, Key Laboratory of Plants Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, South Beijing Road 40-1, Urumqi 830011, China; (P.A.); (Z.L.); (D.Z.); (L.J.); (G.Z.)
| | - Deng Zang
- State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization, Key Laboratory of Plants Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, South Beijing Road 40-1, Urumqi 830011, China; (P.A.); (Z.L.); (D.Z.); (L.J.); (G.Z.)
| | - Lan Jiang
- State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization, Key Laboratory of Plants Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, South Beijing Road 40-1, Urumqi 830011, China; (P.A.); (Z.L.); (D.Z.); (L.J.); (G.Z.)
| | - Guoan Zou
- State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization, Key Laboratory of Plants Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, South Beijing Road 40-1, Urumqi 830011, China; (P.A.); (Z.L.); (D.Z.); (L.J.); (G.Z.)
- University of Chinese Academy of Sciences, No.19(A) Yuquan Road, Beijing 100049, China
| | - Haji Akber Aisa
- State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization, Key Laboratory of Plants Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, South Beijing Road 40-1, Urumqi 830011, China; (P.A.); (Z.L.); (D.Z.); (L.J.); (G.Z.)
- University of Chinese Academy of Sciences, No.19(A) Yuquan Road, Beijing 100049, China
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13
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Luo L, Zhu J, Guo Y, Li C. Mitophagy and immune infiltration in vitiligo: evidence from bioinformatics analysis. Front Immunol 2023; 14:1164124. [PMID: 37287971 PMCID: PMC10242039 DOI: 10.3389/fimmu.2023.1164124] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 05/11/2023] [Indexed: 06/09/2023] Open
Abstract
Background Vitiligo is an acquired, autoimmune, depigmented skin disease with unclear pathogenesis. Mitochondrial dysfunction contributes significantly to vitiligo, and mitophagy is vital for removing damaged mitochondria. Herein, using bioinformatic analysis, we sought to determine the possible role of mitophagy-associated genes in vitiligo and immune infiltration. Methods Microarrays GSE53146 and GSE75819 were used to identify differentially expressed genes (DEGs) in vitiligo. By crossing vitiligo DEGs with mitophagy-related genes, the mitophagy-related DEGs were identified. Functional enrichment and protein-protein intersection (PPI) analyses were conducted. Then, the hub genes were identified using two machine algorithms, and receiver operating characteristic (ROC) curves were generated. Next, the immune infiltration and its connection with hub genes in vitiligo were investigated. Finally, the Regnetwork database and NetworkAnalyst were used to predict the upstream transcriptional factors (TFs), microRNAs (miRNAs), and the protein-compound network. Results A total of 24 mitophagy-related genes were screened. Then, five mitophagy hub genes (GABARAPL2, SP1, USP8, RELA, and TBC1D17) were identified using two machine learning algorithms, and these genes showed high diagnostic specificity for vitiligo. The PPI network showed that hub genes interacted with each other. The mRNA expression levels of five hub genes were validated in vitiligo lesions by qRT-PCR and were compatible with the bioinformatic results. Compared with controls, the abundance of activated CD4+ T cells, CD8+ T cells, immature dendritic cells and B cells, myeloid-derived suppressor cells (MDSCs), gamma delta T cells, mast cells, regulatory T cells (Tregs), and T helper 2 (Th2) cells was higher. However, the abundance of CD56 bright natural killer (NK) cells, monocytes, and NK cells was lower. Correlation analysis revealed a link between hub genes and immune infiltration. Meanwhile, we predicted the upstream TFs and miRNAs and the target compounds of hub genes. Conclusion Five hub mitophagy-related genes were identified and correlated with immune infiltration in vitiligo. These findings suggested that mitophagy may promote the development of vitiligo by activating immune infiltration. Our study might enhance our comprehension of the pathogenic mechanism of vitiligo and offer a treatment option for vitiligo.
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Affiliation(s)
- Lingling Luo
- Department of Dermatology, Hospital for Skin Disease, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, Jiangsu, China
| | - Jing Zhu
- Department of Dermatology, Hospital for Skin Disease, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, Jiangsu, China
| | - Youming Guo
- Department of Dermatology, Hospital for Skin Disease, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, Jiangsu, China
| | - Chengrang Li
- Department of Dermatology, Hospital for Skin Disease, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, Jiangsu, China
- Department of Dermatology, Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and Sexually Transmitted Infections, Nanjing, Jiangsu, China
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Ishaq R, Ilyas M, Habiba U, Amin MNU, Saeed S, Raja GK, Shaiq PA, Ahmed ZM. Whole Exome Sequencing Reveals Clustering of Variants of Known Vitiligo Genes in Multiplex Consanguineous Pakistani Families. Genes (Basel) 2023; 14:genes14051118. [PMID: 37239478 DOI: 10.3390/genes14051118] [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: 04/13/2023] [Revised: 05/12/2023] [Accepted: 05/18/2023] [Indexed: 05/28/2023] Open
Abstract
Vitiligo is an autoimmune complex pigmentation disease characterized by non-pigmented patches on the surface of the skin that affect approximately 0.5-2% population worldwide. The exact etiology is still unknown; however, vitiligo is hypothesized to be a multifactorial and genetically heterogeneous condition. Therefore, the current study is designed to investigate the anthropometric presentation and genetic spectrum of vitiligo in fifteen consanguineous Pakistani families. The clinical evaluation of participating individuals revealed varying degrees of disease severity, with 23 years as the average age of disease onset. The majority of the affected individuals had non-segmental vitiligo (NSV). Whole exome sequencing analysis revealed clustering of rare variants of known vitiligo-associated genes. For instance, in the affected individuals of family VF-12, we identified three novel rare variants of PTPN22 (c.1108C>A), NRROS (c.197C>T) and HERC2 (c.10969G>A) genes. All three variants replaced evolutionarily conserved amino acid residues in encoded proteins, which are predicted to impact the ionic interactions in the secondary structure. Although various in silico algorithms predicted low effect sizes for these variants individually, the clustering of them in affected individuals increases the polygenic burden of risk alleles. To our knowledge, this is the first study that highlights the complex etiology of vitiligo and genetic heterogeneity in multiplex consanguineous Pakistani families.
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Affiliation(s)
- Rafaqat Ishaq
- University Institute of Biochemistry and Biotechnology, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi 46300, Pakistan
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, University of Maryland, Baltimore, MD 20742, USA
| | - Muhammad Ilyas
- University Institute of Biochemistry and Biotechnology, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi 46300, Pakistan
- Department of Medical Laboratory Technology, Riphah International University, Malakand Campus, Malakand 23010, Pakistan
| | - Umme Habiba
- University Institute of Biochemistry and Biotechnology, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi 46300, Pakistan
| | - Muhammad Noor Ul Amin
- University Institute of Biochemistry and Biotechnology, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi 46300, Pakistan
| | - Sadia Saeed
- University Institute of Biochemistry and Biotechnology, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi 46300, Pakistan
- Department of Clinical Molecular Biology, EpiGen, Institute of Clinical Medicine, University of Oslo, 0313 Oslo, Norway
| | - Ghazala Kaukab Raja
- University Institute of Biochemistry and Biotechnology, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi 46300, Pakistan
| | - Pakeeza Arzoo Shaiq
- University Institute of Biochemistry and Biotechnology, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi 46300, Pakistan
| | - Zubair M Ahmed
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, University of Maryland, Baltimore, MD 20742, USA
- Department of Biochemistry and Molecular Biology, School of Medicine, University of Maryland, Baltimore, MD 20742, USA
- Department of Ophthalmology and Visual Sciences, School of Medicine, University of Maryland, Baltimore, MD 20742, USA
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15
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Chong S, Wei C, Feng L, Guo R. Silk Fibroin-Based Hydrogel Microneedles Deliver α-MSH to Promote Melanosome Delivery for Vitiligo Treatment. ACS Biomater Sci Eng 2023. [PMID: 37115665 DOI: 10.1021/acsbiomaterials.3c00284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
Microneedles have shown great advantages in subcutaneous drug delivery and skin disease treatment. Vitiligo is a difficult-to-cure skin disease characterized by the depigmentation of the epidermis. Melanosomes produced in melanocytes are transported through dendrites to adjacent keratinocytes, where they accumulate, resulting in skin pigmentation. However, melanocytes in vitiligo patients are functionally disrupted. Silk fibroin (SF) methacrylate hydrogel microneedle can deliver α-MSH to the epidermis directly, where α-MSH helps the protection of melanocytes, extension of melanocytic dendrites, and transfer of melanosomes. In addition, the expression of melanogenesis-related melanocyte-inducing transcription factor and tyrosinase-related protein 1 (TRP1) was up-regulated, and the number of hair follicle stem cells increased with good proliferative activity. This slow release α-MSH SF-based hydrogel microneedles provides a new idea for the treatment of vitiligo.
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Affiliation(s)
- Shubin Chong
- Department of Dermatology, Sixth Affiliated Hospital of South China University of Technology, Foshan 528200, China
| | - Chengxiu Wei
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Guangdong Provincial Engineering and Technological Research Centre for Drug Carrier Development, Department of Biomedical Engineering, Jinan University, Guangzhou 510632, China
| | - Longbao Feng
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Guangdong Provincial Engineering and Technological Research Centre for Drug Carrier Development, Department of Biomedical Engineering, Jinan University, Guangzhou 510632, China
| | - Rui Guo
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Guangdong Provincial Engineering and Technological Research Centre for Drug Carrier Development, Department of Biomedical Engineering, Jinan University, Guangzhou 510632, China
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16
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Chen Z, Li Y, Xie Y, Nie S, Chen B, Wu Z. Roflumilast enhances the melanogenesis and attenuates oxidative stress-triggered damage in melanocytes. J Dermatol Sci 2023:S0923-1811(23)00080-4. [PMID: 37069030 DOI: 10.1016/j.jdermsci.2023.04.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/28/2023] [Accepted: 04/02/2023] [Indexed: 04/05/2023]
Abstract
BACKGROUND The management of vitiligo is challenging due to limited treatment options, and therapeutic strategy varies according to the active or stable stage of vitiligo. PDE4 inhibitor has been used to treat various skin diseases, but the efficacy in vitiligo treatment is mixed. OBJECTIVE In this study, we aimed to investigate whether roflumilast, a PDE4 inhibitor, induces melanogenesis and attenuates oxidative stress-triggered damage in melanocytes, and if so, what is the mechanism. METHODS Melanin content assay, qRT-PCR, western blotting, ELISA, immunofluorescence assays, immunohistochemistry, small interfering RNA, flow cytometry, and transmission electron microscopy were employed. RESULTS Our results demonstrated that roflumilast alone only slightly increased melanogenesis, however, the combination of roflumilast and forskolin could boost cAMP levels, hence promoting melanogenesis more significantly. Moreover, roflumilast attenuated H2O2-induced apoptosis and mitochondrial morphological changes in melanocytes by reducing ROS levels. Furthermore, roflumilast activated AhR/Nrf2 pathway via cAMP whereas AhR silencing blocked roflumilast-induced Nrf2 nuclear translocation and reversed the inhibitory effect of roflumilast on H2O2-induced ROS production. Finally, we observed that the lesional skin of active vitiligo patients exhibited higher PDE4 expression levels. CONCLUSION roflumilast enhances the melanogenesis effect of forskolin and protects melanocytes from H2O2-induced apoptosis by cAMP/AhR/Nrf2-activated ROS inhibition, highlighting its therapeutic potential in vitiligo treatment.
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17
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Castillo E, González-Rosende ME, Martínez-Solís I. The Use of Herbal Medicine in the Treatment of Vitiligo: An Updated Review. PLANTA MEDICA 2023; 89:468-483. [PMID: 36379447 DOI: 10.1055/a-1855-1839] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Vitiligo is a chronic disease of unknown etiology that causes progressive cutaneous depigmentation. Current pharmacological treatments have limited success and present significant risks. Many efforts have been made in recent years to explore new anti-vitiligo therapeutic strategies, including herbal-based therapies. The objective of the present review is to provide an updated overview on the most frequently used medicinal plants in the treatment of vitiligo. A bibliographical search was carried out in scientific databases Pubmed, Scifinder, Scopus, Google Scholar, and Medline up to October 2021 using the descriptors vitiligo, herbal, medicinal plants, and alternative therapies. In our search, the highest number of published studies comprise plants commonly used in traditional herbal medicine, highlighting the usefulness of ethnopharmacology in the discovery of new therapeutic agents. The review outlines current understanding and provides an insight into the role of psoralens and khellin (photosensitizing agents obtained from plants such as Cullen corylifolium or Ammi visnaga). The paper also describes other traditional herbs such as Ginkgo biloba, Phlebodium aureum, Piper nigrum, Picrorhiza kurroa, and Baccharoides anthelmintica that can likewise act as potential therapeutical agents. Based on our findings, photosensitizing agents in combination with phototherapy, the association of oral Phebodium aureum with phototherapies as well as oral G. biloba in monotherapy showed greater scientific evidence as therapeutic options. The research results emphasize that further investigation in this area is merited. More long-term follow up clinical trials and higher quality randomized trials are needed.
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Affiliation(s)
- Encarna Castillo
- Department of Pharmacy, Faculty of Health Sciences, University CEU-Cardenal Herrera, CEU Universities, Alfara del Patriarca, Valencia (Spain)
| | - María Eugenia González-Rosende
- Department of Pharmacy, Faculty of Health Sciences, University CEU-Cardenal Herrera, CEU Universities, Alfara del Patriarca, Valencia (Spain)
| | - Isabel Martínez-Solís
- Department of Pharmacy, Faculty of Health Sciences, University CEU-Cardenal Herrera, CEU Universities, Alfara del Patriarca, Valencia (Spain)
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18
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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: 20] [Impact Index Per Article: 20.0] [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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19
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Xie Y, Mei X, Shi W. Kaempferol promotes melanogenesis and reduces oxidative stress in PIG1 normal human skin melanocytes. J Cell Mol Med 2023; 27:982-990. [PMID: 36924030 PMCID: PMC10064034 DOI: 10.1111/jcmm.17711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Revised: 02/19/2023] [Accepted: 02/24/2023] [Indexed: 03/18/2023] Open
Abstract
Vitiligo is an autoimmune disease characterized by depigmentation. Kaempferol is a flavonoid compound with broad anti-inflammatory and antioxidant properties. The purpose of this study was to investigate the effect of kaempferol on melanogenesis in PIG1 normal human skin melanocytes and its response to oxidative stress. The effect of kaempferol on melanin synthesis in PIG1 normal human skin melanocytes was explored by measuring tyrosinase activity, melanin content, mRNA and protein expression of key enzymes and expression of related pathway proteins. The effects of kaempferol pretreatment on cell viability, apoptosis, ROS level and HO-1 protein level under H2 O2 stimulation were explored. When treated with kaempferol, the tyrosinase activity and melanin content of PIG1 cells increased, the mRNA and protein expressions of TYR, TRP1, TRP2 and MITF increased, and the phosphorylation level of ERK1/2 increased. Upon the stimulation of H2 O2 , kaempferol reduced the production of ROS, decreased apoptosis and increased the protein expression of HO-1 in PIG1 cells. In addition, kaempferol inhibited oxidative stress-induced melanin reduction and promoted melanin synthesis in PIG1 cells and protected against H2 O2 -induced oxidative stress damage.
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Affiliation(s)
- Yihui Xie
- Department of Dermatology, The Affiliated Hospital of Jiaxing University, The First Hospital of Jiaxing, Jiaxing, China
| | - Xingyu Mei
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Weimin Shi
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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20
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Gamil H, Assaf M, Khater M, Fawzy M. Abnormal nuclear expression of aquaporin-3 in lesional and perilesional skin of vitiligo patients: A novel immunohistochemical finding. J Cosmet Dermatol 2023; 22:1063-1070. [PMID: 36437598 DOI: 10.1111/jocd.15518] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/31/2022] [Accepted: 11/07/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND Vitiligo is a skin disease characterized by a complex etiopathogenesis. Keratinocyte apoptosis may play a role in vitiligo pathogenesis. Aquaporin-3 (AQP-3) is an aqua-glyceroporin that controls keratinocyte proliferation and differentiation. AIM To assess the immunohistochemical expression of AQP-3 in lesional and perilesional skin of vitiligo patients compared to healthy control skin. METHODS A total of 20 patients with generalized non-segmental vitiligo and 20 age- and sex-matched healthy controls were included. Lesional and perilesional skin of vitiligo patients, as well as normal skin of control subjects, were biopsied. The immunohistochemical expression of AQP3 in the epidermis was examined. RESULTS Compared to control skin, both lesional and perilesional skin showed a significant reduction in the intensity of membranous staining of AQP-3 (p < 0.001, p = 0.002, respectively). Moreover, the membrano-cytoplasmic pattern of AQP-3 staining was significantly detected in 80% of lesions and 85% of perilesional biopsies, while it was absent in control skin (p < 0.001). Additionally, nuclear AQP-3 expression was significantly detected in 35% of lesions and 55% of perilesional biopsies, while it was not detected in control skin (p = 0.012, p < 0.001, respectively). No statistically significant difference was detected between lesional and perilesional skin. CONCLUSIONS To our knowledge, this is the first immunohistochemical research to show a significant abnormal nuclear expression of AQP-3 in lesional and perilesional skin of vitiligo patients. This abnormality may reflect impaired functions of AQP-3, leading to keratinocyte apoptosis with subsequent melanocyte death and development of vitiligo.
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Affiliation(s)
- Hend Gamil
- Department of Dermatology, Venereology & Andrology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Magda Assaf
- Department of Pathology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Mohamad Khater
- Department of Dermatology, Venereology & Andrology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Manal Fawzy
- Department of Dermatology, Venereology & Andrology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
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21
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Hu W, Zhang J, Wang H, Guan M, Dai L, Li J, Kang X. Protective effects of isorhamnetin against H 2O 2-induced oxidative damage in HaCaT cells and comprehensive analysis of key genes. Sci Rep 2023; 13:2498. [PMID: 36781904 PMCID: PMC9925802 DOI: 10.1038/s41598-023-27575-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Accepted: 01/04/2023] [Indexed: 02/15/2023] Open
Abstract
Isorhamnetin (ISO) is a methylated flavonol present in the leaves, flowers, and fruits of many plants with antitumour, anti-inflammatory, antioxidant, and anti-apoptotic properties. ISO has been suggested as the active substance in Vernonia anthelmintica (L.) to treat vitiligo. However, the mechanisms underlying its effects remain unclear. In this study, human keratinocytes (HaCaT cells) were pre-treated with or without ISO and then stimulated with hydrogen peroxide (H2O2) to generate oxidative damage. Pre-treatment with ISO increased HaCaT cell viability, reduced malondialdehyde content, and enhanced superoxide dismutase activity, resulting in a reduction in the loss of mitochondrial membrane potential, improved cell morphological damage, and apoptosis inhibition. Furthermore, we identified 51 significantly dysregulated differentially expressed genes (DEGs) of HaCaT cells treated with ISO using RNA-sequencing. Enrichment analysis using Gene Ontology and Kyoto Encyclopedia of Genes and Genomes databases indicated that the protective effect of ISO could be related to its effects on the Wnt signalling pathway. Our study provides novel insights into key gene regulation in the progression of oxidative damage and the mechanisms of action of ISO.
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Affiliation(s)
- Wen Hu
- Department of Dermatology and Venereology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang, China
- Xinjiang Clinical Research Center for Dermatologic Diseases, Urumqi, Xinjiang, China
- Xinjiang Key Laboratory of Dermatology Research (XJYS1707), Urumqi, 830000, Xinjiang, China
| | - Jingzhan Zhang
- Department of Dermatology and Venereology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang, China
- Xinjiang Clinical Research Center for Dermatologic Diseases, Urumqi, Xinjiang, China
- Xinjiang Key Laboratory of Dermatology Research (XJYS1707), Urumqi, 830000, Xinjiang, China
| | - Hongjuan Wang
- Department of Dermatology and Venereology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang, China
- Xinjiang Clinical Research Center for Dermatologic Diseases, Urumqi, Xinjiang, China
- Xinjiang Key Laboratory of Dermatology Research (XJYS1707), Urumqi, 830000, Xinjiang, China
| | - Mengmeng Guan
- Department of Dermatology and Venereology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang, China
- Xinjiang Clinical Research Center for Dermatologic Diseases, Urumqi, Xinjiang, China
- Xinjiang Key Laboratory of Dermatology Research (XJYS1707), Urumqi, 830000, Xinjiang, China
| | - Leheng Dai
- Department of Dermatology and Venereology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang, China
- Xinjiang Clinical Research Center for Dermatologic Diseases, Urumqi, Xinjiang, China
- Xinjiang Key Laboratory of Dermatology Research (XJYS1707), Urumqi, 830000, Xinjiang, China
| | - Jun Li
- Department of Dermatology and Venereology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang, China
- Xinjiang Clinical Research Center for Dermatologic Diseases, Urumqi, Xinjiang, China
- Xinjiang Key Laboratory of Dermatology Research (XJYS1707), Urumqi, 830000, Xinjiang, China
| | - Xiaojing Kang
- Department of Dermatology and Venereology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang, China.
- Xinjiang Clinical Research Center for Dermatologic Diseases, Urumqi, Xinjiang, China.
- Xinjiang Key Laboratory of Dermatology Research (XJYS1707), Urumqi, 830000, Xinjiang, China.
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22
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Sengupta R, Mitra S, Dighal A, Moulik S, Chaudhuri SJ, Das NK, Chatterjee U, Chatterjee M. Does immune dysregulation contribute towards development of hypopigmentation in Indian post kala-azar dermal leishmaniasis? Exp Dermatol 2023. [PMID: 36760064 DOI: 10.1111/exd.14760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 01/05/2023] [Accepted: 02/07/2023] [Indexed: 02/11/2023]
Abstract
Post kala-azar dermal leishmaniasis (PKDL), a sequel of apparently cured visceral leishmaniasis (VL) presents with papulonodular (polymorphic) or hypopigmented lesions (macular) and is the proposed disease reservoir. As hypopigmentation appears consistently in PKDL, especially the macular form, this study aimed to delineate immune factors that singly or in combination could contribute towards this hypopigmentation. At lesional sites, the presence of melanocytes and CD8+ T-cells was assessed by immunohistochemistry and mRNA expression of melanogenic markers (tyrosinase, tyrosinase-related protein-1 and MITF) by droplet digital PCR, while plasma levels of cytokines and chemokines were measured by a multiplex assay. In comparison with skin from healthy individuals, macular PKDL demonstrated a near total absence of Melan-A+ cells at dermal sites, while the polymorphic cases demonstrated a 3.2-fold decrease, along with a dramatic reduction in the expression of key enzymes related to the melanogenesis signalling pathway in both forms. The levels of circulating IFN-γ, IL-6, IL-2, IL-1β, TNF-α and IFN-γ-inducible chemokines (CXCL9/10/11) were elevated and was accompanied by an increased lesional infiltration of CD8+ T-cells. The proportion of CD8+ T-cells correlated strongly with plasma levels of IFN-γ (r = 0.8), IL-6 (r = 0.9, p < 0.05), IL-2 (r = 0.7), TNF-α (r = 0.9, p < 0.05) and IL-1β (r = 0.7), as also with CXCL9 (r = 0.5) and CXCL10 (r = 0.6). Taken together, the absence/reduction in Melan-A suggested hypopigmentation in PKDL was associated with the destruction of melanocytes, following the impairment of the melanogenesis pathway. Furthermore, the presence of CD8+ T-cells and an enhanced IFN-γ-associated immune milieu suggested the generation of a pro-inflammatory landscape that facilitated melanocyte dysfunction/destruction.
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Affiliation(s)
- Ritika Sengupta
- Department of Pharmacology, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - Sneha Mitra
- Department of Pharmacology, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - Aishwarya Dighal
- Department of Pharmacology, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - Srija Moulik
- Department of Pharmacology, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | | | - Nilay Kanti Das
- Department of Dermatology, College of Medicine & Sagore Dutta Hospital, Kolkata, India
| | - Uttara Chatterjee
- Department of Pathology, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - Mitali Chatterjee
- Department of Pharmacology, Institute of Post Graduate Medical Education and Research, Kolkata, India
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23
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Zhang M, Xia T, Lin F, Yu J, Yang Y, Lei W, Zhang T. Vitiligo: An immune disease and its emerging mesenchymal stem cell therapy paradigm. Transpl Immunol 2023; 76:101766. [PMID: 36464219 DOI: 10.1016/j.trim.2022.101766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 08/31/2022] [Accepted: 11/28/2022] [Indexed: 12/02/2022]
Abstract
Melanocyte damage, innate immune response, adaptive immune response, and immune inflammatory microenvironment disorders are involved in the development of the immunological pathogenic mechanism of vitiligo. Mesenchymal stem cells are considered an ideal type of cells for the treatment of vitiligo owing to their low immunogenicity, lower rates of transplant rejection, and ability to secrete numerous growth factors, exosomes, and cytokines in vivo. The regulation of signaling pathways related to oxidative stress and immune imbalance in the immunological pathogenesis of vitiligo can improve the immune microenvironment of tissue injury sites. In addition, co-transplantation with melanocytes can reverse the progression of vitiligo. Therefore, continuous in-depth research on the immunopathogenic mechanism involved in this disease and mesenchymal stem cell-based therapy is warranted for the treatment of vitiligo in the future.
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Affiliation(s)
- Meng Zhang
- Key Laboratory of Cell Engineering of Guizhou Province, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
| | - Tingting Xia
- Department of Dermatology, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
| | - Fengqin Lin
- Key Laboratory of Cell Engineering of Guizhou Province, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
| | - Jiang Yu
- Key Laboratory of Cell Engineering of Guizhou Province, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China; The Clinical Stem Cell Research Institute, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
| | - Ying Yang
- Department of Dermatology, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
| | - Wei Lei
- Department of Dermatology, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
| | - Tao Zhang
- Key Laboratory of Cell Engineering of Guizhou Province, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China; The Clinical Stem Cell Research Institute, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China; Department of Dermatology, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China.
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24
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Md Jaffri J. Reactive Oxygen Species and Antioxidant System in Selected Skin Disorders. Malays J Med Sci 2023; 30:7-20. [PMID: 36875194 PMCID: PMC9984103 DOI: 10.21315/mjms2023.30.1.2] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 10/07/2021] [Indexed: 03/06/2023] Open
Abstract
The skin has a solid protective system that includes the stratum corneum as the primary barrier and a complete antioxidant defence system to maintain the skin's normal redox homeostasis. The epidermal and dermal cells are continuously exposed to physiological levels of reactive oxygen species (ROS) originating from cellular metabolic activities. Environmental insults, such as ultraviolet (UV) rays and air pollutants, also generate ROS that can contribute to structural damage of the skin. The antioxidant defence system ensures that the ROS level remains within the safe limit. In certain skin disorders, oxidative stress plays an important role, and there is an established interplay between oxidative stress and inflammation in the development of the condition. Lower levels of skin antioxidants indicate that oxidative stress may mediate the pathogenesis of the disorder. Accordingly, the total antioxidant level was also found to be lower in individuals with skin disorders in individuals with normal skin conditions. This review attempts to summarise the skin oxidant sources and antioxidant system. In addition, both skin and total antioxidant status of individuals with psoriasis, acne vulgaris, vitiligo and atopic dermatitis (AD), as well as their associations with the progression of these disorders will be reviewed.
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Affiliation(s)
- Juliana Md Jaffri
- Kulliyyah of Pharmacy, International Islamic University Malaysia, Pahang, Malaysia
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25
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Ogawa T, Ishitsuka Y. NRF2 in the Epidermal Pigmentary System. Biomolecules 2022; 13:biom13010020. [PMID: 36671405 PMCID: PMC9855619 DOI: 10.3390/biom13010020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 12/20/2022] [Accepted: 12/21/2022] [Indexed: 12/25/2022] Open
Abstract
Melanogenesis is a major part of the environmental responses and tissue development of the integumentary system. The balance between reduction and oxidation (redox) governs pigmentary responses, for which coordination among epidermal resident cells is indispensable. Here, we review the current understanding of melanocyte biology with a particular focus on the "master regulator" of oxidative stress responses (i.e., the Kelch-like erythroid cell-derived protein with cap'n'collar homology-associated protein 1-nuclear factor erythroid-2-related factor 2 system) and the autoimmune pigment disorder vitiligo. Our investigation revealed that the former is essential in pigmentogenesis, whereas the latter results from unbalanced redox homeostasis and/or defective intercellular communication in the interfollicular epidermis (IFE). Finally, we propose a model in which keratinocytes provide a "niche" for differentiated melanocytes and may "imprint" IFE pigmentation.
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Affiliation(s)
- Tatsuya Ogawa
- Department of Dermatology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Japan
| | - Yosuke Ishitsuka
- Department of Dermatology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita 565-0871, Japan
- Correspondence: ; Tel.: +81-66-879-3031; Fax: +81-66-879-3039
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26
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Zhao Y, Hu Y, Shen Q, Xiong R, Song X, Guan C. DCUN1D1, a new molecule involved in depigmentation via upregulating CXCL10. Exp Dermatol 2022; 32:457-468. [PMID: 36541112 DOI: 10.1111/exd.14732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/18/2022] [Accepted: 12/12/2022] [Indexed: 12/24/2022]
Abstract
CD8+ T cells in the lesioned site play a crucial role in the pathogenesis of vitiligo. The chemokine CXCL10 secreted by keratinocytes regulates the migration of CD8+ T cells into the skin. In our previous study, we found that DCUN1D1 expression in vitiligo lesions positively correlates with Cxcl10 expression. In this study, the regulatory effect of DCUN1D1 on CXCL10 and cell function was investigated. DCUN1D1 protein expression was significantly higher in the skin tissue from vitiligo lesions compared with samples from healthy controls. High expression of DCUN1D1 in keratinocytes caused local hair depigmentation in mice, reduced melanin content, high infiltration of CD8+ T cells and increased CXCL10 expression. This suggested that DCUN1D1 may regulate CD8+ T-cell infiltration and depigmentation through CXCL10. Inhibition of DCUN1D1 expression in HaCaT cells abolished the IFN-γ-induced upregulation of p-JAK1, p-STAT1 and CXCL10, suppressed the H2 O2 -induced ROS generation and apoptosis, and upregulated tyrosinase expression in melanocytes. Collectively, these results show that DCUN1D1 is an important regulator of CXCL10 and may be a new target for the treatment of vitiligo.
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Affiliation(s)
- Yan Zhao
- School of Basic Med ical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yebei Hu
- Department of Dermatology, Hangzhou Third Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, China.,Department of Dermatology, Affiliated Hangzhou Dermatology Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Qingmei Shen
- School of Basic Med ical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Renxue Xiong
- Department of Dermatology, Hangzhou Third Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, China.,Department of Dermatology, Affiliated Hangzhou Dermatology Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xiuzu Song
- Department of Dermatology, Hangzhou Third Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, China.,Department of Dermatology, Affiliated Hangzhou Dermatology Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Zhejiang Chinese Medical University, Hangzhou, China
| | - Cuiping Guan
- Department of Dermatology, Hangzhou Third Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, China.,Department of Dermatology, Affiliated Hangzhou Dermatology Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Zhejiang Chinese Medical University, Hangzhou, China
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27
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Paraoxonase 1 (PON1) gene Q192R polymorphism in patients with vitiligo. JOURNAL OF SURGERY AND MEDICINE 2022. [DOI: 10.28982/josam.1060981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Background/Aim: Vitiligo is a prevalent inflammatory illness that can affect the skin and mucosal surfaces and is characterized by patchy loss of skin pigmentation. Paraoxonase1 (PON1) is an esterase enzyme with antioxidant properties that binds to high-density lipoproteins. We examined whether the PON1 gene Q192R polymorphism is a risk factor for vitiligo among Turkish people.
Methods: The study included 70 controls and 60 vitiligo cases. Polymerase chain reaction and the restriction fragment length polymorphism technique were used to genotype the PON1 gene Q192R polymorphism.
Results: PON1 gene Q192R genotype distribution was 66.7% QQ, 33.3% QR, and 0% RR in the vitiligo and 81.4% QQ, 18.6% QR, and 0% RR in the control (P = 0.05). When vitiligo patients were compared with controls, the prevalence of the PON1 QR genotype was substantially higher and was linked to a 2.19-fold greater risk of developing vitiligo (odds ratio: 2.19, 95% confidence interval (CI): 0.97–4.91).
Conclusion: These findings imply that Q192R polymorphisms in the PON-1 gene may be linked to vitiligo in the Turkish population. The PON1 QR genotype may be a major genetic risk factor for vitiligo susceptibility and progression. Further studies with larger populations should more thoroughly clarify the association.
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28
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Nieradko-Iwanicka B, Przybylska D, Borzęcki A. A case-control study on immunologic markers of patients with vitiligo. Biomed Pharmacother 2022; 156:113785. [DOI: 10.1016/j.biopha.2022.113785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 09/27/2022] [Accepted: 09/28/2022] [Indexed: 11/15/2022] Open
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29
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Chaudhary A, Patel M, Singh S. Current Debates on Etiopathogenesis and Treatment Strategies for Vitiligo. Curr Drug Targets 2022; 23:1219-1238. [PMID: 35388753 DOI: 10.2174/1389450123666220406125645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 12/12/2021] [Accepted: 12/31/2021] [Indexed: 01/25/2023]
Abstract
Vitiligo is an acquired, chronic, and progressive depigmentation or hypopigmentation characterized by the destruction of melanocytes and the occurrence of white patches or macules in the skin, mucosal surface of eyes, and ears. Melanocytes are the melanin pigment-producing cells of the skin which are destroyed in pathological conditions called vitiligo. Approximately 0.5 - 2.0% of the population is suffering from vitiligo, and a higher prevalence rate of up to 8.8% has been reported in India. It is caused by various pathogenic factors like genetic predisposition, hyperimmune activation, increased oxidative stress, and alteration in neuropeptides level. Genetic research has revealed a multi- genetic inheritance that exhibits an overlap with other autoimmune disorders. However, melanocytes specific genes are also affected (such as DDR1, XBP1, NLRP1, PTPN22, COMT, FOXP3, ACE, APE, GSTP1, TLR, SOD, and CTLA-4). A number of therapeutic options are employed for the treatment of vitiligo. The topical corticosteroids and immunomodulators are currently in practice for the management of vitiligo. Phototherapies alone and in combinations with other approaches are used in those patients who do not respond to the topical treatment. The main focus of this review is on the etiopathological factors, pharmacological management (phototherapy, topical, systemic, and surgical therapy), and herbal drugs used to treat vitiligo.
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Affiliation(s)
- Ankit Chaudhary
- Department of Pharmacology, Neuropharmacology Division, ISF College of Pharmacy, Moga, Punjab 142001, India
| | - Mayank Patel
- Department of Pharmacology, Neuropharmacology Division, ISF College of Pharmacy, Moga, Punjab 142001, India
| | - Shamsher Singh
- Department of Pharmacology, Neuropharmacology Division, ISF College of Pharmacy, Moga, Punjab 142001, India
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30
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Zhang X, Ivantsova E, Perez-Rodriguez V, Cao F, Souders CL, Martyniuk CJ. Investigating mitochondria-immune responses in zebrafish, Danio rerio (Hamilton, 1822): A case study with the herbicide dinoseb. Comp Biochem Physiol C Toxicol Pharmacol 2022; 257:109357. [PMID: 35500749 DOI: 10.1016/j.cbpc.2022.109357] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 04/12/2022] [Accepted: 04/22/2022] [Indexed: 12/17/2022]
Abstract
The dinitrophenol herbicide dinoseb is an uncoupler of mitochondrial oxidative phosphorylation (OXPHOS). Studies in fish demonstrate impaired OXPHOS is associated with altered immune system responses and locomotor activity in fish. The objective of this study was to determine the effect of dinoseb on zebrafish (Danio rerio) during early stages of development. We measured oxygen consumption rates of embryos, transcripts related to OXPHOS, growth, and the immune system (cytokines and immune-signaling transcripts), and locomotor activity. We hypothesized that OXPHOS of fish would be impaired in vivo, leading to altered basal immune system expression and locomotor activity. Oxidative respiration assessments in embryos revealed that dinoseb decreased both mean basal respiration and oligomycin-induced ATP-linked respiration. Expression levels of cytochrome c oxidase complex IV, 3-hydroxyacyl-COA dehydrogenase and superoxide dismutase 1 were decreased in larvae following exposure to dinoseb while succinate dehydrogenase complex flavoprotein subunit A, insulin growth factor 1 (igf1) and igf2a mRNA were increased in abundance. Immune-related transcripts chemokine (C-X-C motif) ligand 1 and matrix metallopeptidase 9 (MMP-9) were decreased in expression levels while toll-like receptor 5a and 5b were increased in expression. In addition, a visual motor response test was conducted on both 6 and 7 dpf larvae to determine if dinoseb impaired locomotor activity. Dinoseb decreased locomotor activity in 7 dpf larvae but not 6 dpf. This study improves knowledge of toxicity mechanisms for dinoseb in early stages of fish development and demonstrates that mitochondrial toxicants may disrupt immune signaling in zebrafish.
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Affiliation(s)
- Xujia Zhang
- College of Geographical Sciences, Harbin Normal University, Harbin 150025, China
| | - Emma Ivantsova
- Department of Physiological Sciences and Center for Environmental and Human Toxicology, College of Veterinary Medicine, University of Florida, Gainesville, FL 32611, USA
| | - Veronica Perez-Rodriguez
- Department of Physiological Sciences and Center for Environmental and Human Toxicology, College of Veterinary Medicine, University of Florida, Gainesville, FL 32611, USA
| | - Fangjie Cao
- School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Christopher L Souders
- Department of Physiological Sciences and Center for Environmental and Human Toxicology, College of Veterinary Medicine, University of Florida, Gainesville, FL 32611, USA
| | - Christopher J Martyniuk
- Department of Physiological Sciences and Center for Environmental and Human Toxicology, College of Veterinary Medicine, University of Florida, Gainesville, FL 32611, USA; University of Florida Genetics Institute, University of Florida, Gainesville, FL 32611, USA; Interdisciplinary Program in Biomedical Sciences, Neuroscience, University of Florida, Gainesville, FL 32611, USA.
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31
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Peng L, Lu Y, Zhong J, Ke Y, Li Y, Liang B, Li H, Zhu H, Li Z. Lycium barbarum polysaccharide promotes proliferation of human melanocytes via activating the Nrf2/p62 signaling pathway by inducing autophagy in vitro. J Food Biochem 2022; 46:e14301. [PMID: 35765891 DOI: 10.1111/jfbc.14301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Revised: 05/19/2022] [Accepted: 05/27/2022] [Indexed: 11/27/2022]
Abstract
Vitiligo is a skin disease characterized by lack of functional melanocytes. Lycium barbarum polysaccharide (LBP) has been demonstrated to preserve keratinocytes and fibroblasts against oxidative stress. This study aimed to explore the efficacy and underlying mechanisms of LBP on autophagy in H2 O2 -damaged human melanocytes. Cellular viability was measured by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay and annexin V-fluorescein isothiocyanate/propidium iodide double staining. Reverse transcription-polymerase chain reaction, western blotting and electron microscopy were performed to detect autophagy. The protein expression level of Nrf2 and p62 were assessed by western blotting. Plasmid transfection and lentiviral infection were used to overexpress and silence Nrf2 in PIG1 cells. LBP promoted the proliferation and inhibited apoptosis of H2 O2 -damaged PIG1 cells. LBP increased the proliferation of H2 O2 -damaged PIG1 cells via induction of autophagy, and Nrf2 shRNA experiment confirmed that LBP activated the Nrf2/p62 signal pathway. These results suggest that LBP may be used for the treatment of vitiligo. PRACTICAL APPLICATIONS: Goji berry is the mature and dried fruit of Lycium barbarum L., which is a common food with a long history in China, as well as a Traditional Chinese Medicine. Our previous research found that LBP could activated the Nrf2/ARE pathway in an ultraviolet (UV)-induced photodamage model of keratinocytes, and increase the levels of phase II detoxification and antioxidant enzymes. We firstly confirmed the anti-vitiligo effects of L. barbarum polysaccharide (LBP) by inducing autophagy and promoted proliferation of human melanocytes, and LBP induced autophagy via activating the Nrf2/p62 signaling pathway in this study. These results proved that LBP can be an effective therapy for vitiligo treatment.
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Affiliation(s)
- Liqian Peng
- Department of Dermatology, Guangzhou Institute of Dermatology, Guangzhou, P.R. China.,Institute of Dermatology, Guangzhou Medical University, Guangzhou, P.R. China
| | - Yue Lu
- Academy of Chinese Medical Sciences, The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, P.R. China
| | - Jinyao Zhong
- Academy of Chinese Medical Sciences, The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, P.R. China
| | - Yanan Ke
- Department of Dermatology, Guangzhou Institute of Dermatology, Guangzhou, P.R. China.,Institute of Dermatology, Guangzhou Medical University, Guangzhou, P.R. China
| | - Yanhong Li
- Department of Dermatology, Guangzhou Institute of Dermatology, Guangzhou, P.R. China.,Institute of Dermatology, Guangzhou Medical University, Guangzhou, P.R. China
| | - Bihua Liang
- Department of Dermatology, Guangzhou Institute of Dermatology, Guangzhou, P.R. China.,Institute of Dermatology, Guangzhou Medical University, Guangzhou, P.R. China
| | - Huaping Li
- Department of Dermatology, Guangzhou Institute of Dermatology, Guangzhou, P.R. China.,Institute of Dermatology, Guangzhou Medical University, Guangzhou, P.R. China
| | - Huilan Zhu
- Department of Dermatology, Guangzhou Institute of Dermatology, Guangzhou, P.R. China.,Institute of Dermatology, Guangzhou Medical University, Guangzhou, P.R. China
| | - Zhenjie Li
- Department of Dermatology, Guangzhou Institute of Dermatology, Guangzhou, P.R. China.,Institute of Dermatology, Guangzhou Medical University, Guangzhou, P.R. China
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32
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Mohamed NM, elfatah AHA. Receptor of advanced glycation end product (RAGE) polymorphism and oxidative status in Hashimoto’s thyroiditis in Egyptian female patients: case control study. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2022. [DOI: 10.1186/s43042-022-00311-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Hashimoto's thyroiditis is the most widespread autoimmune illness targeting a specific organ. "Redox homeostasis" is achieved when the production of Reactive Oxygen Species and their elimination are in balance. Advanced glycation end products (AGEs) are formed when glucose and/or α-oxaloaldehydes react non-enzymatically with the amino groups of lipids, proteins, and DNA. Nowadays, many studies are concerned with AGEs, the polymorphisms of their receptors, and their association with increased risk of HT. However, few studies investigated the role of receptors of advanced glycation end product (RAGE) SNP in Egyptian females.
Objective
The goals of this investigation were to ascertain whether oxidative stress plasma malondialdehyde (MDA) and total antioxidant capacity (TAC) were associated with HT, in addition, to assess the association of RAGE polymorphisms (− 374 T > A and the − 429 T > C and Gly82Ser) with HT.
Subject and methods.
Our case–control study has 80 patients enrolled who have newly been diagnosed with HT and 80 age and sex-matched healthy female controls. Each participant underwent a thorough medical history, physical examination, and laboratory investigations, which included Genotyping of RAGE Gly82Ser, − 374 T > A and − 429 T > C using polymerase chain reaction-restriction fragment length polymorphisms (PCR–RFLP).
Results
Chi-square revealed a significant association regarding the distribution of RAGE (− 374 T < C) genotypes TT and CC between patients and control (P = 0.04). Non-significant associations regarding the distribution of Gly82Ser genotypes Gly/Gly, Gly/Ser, Ser/Ser were found between patients and control (P = 0.5), and non-significant associations related to − 429 T > C gene polymorphism were revealed. In addition, patients with HT had higher MDA and lower TCA compared with controls.
Conclusion
The elevated MDA and decreased TAC as an antioxidant may be one of several risk factors associated with the prevalence of HT in individuals with the − 429 T > C RAGE mutation polymorphism that is associated with an increased risk of HT in Egyptian females.
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33
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Erdoğan A, Mutlu HS, Solakoğlu S. Autologously transplanted dermis-derived cells alleviated monobenzone-induced vitiligo in mouse. Exp Dermatol 2022; 31:1355-1363. [PMID: 35538739 DOI: 10.1111/exd.14603] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 04/26/2022] [Accepted: 05/08/2022] [Indexed: 12/01/2022]
Abstract
Vitiligo is a depigmentation disease which affects skin and hair follicles with a prevalence of 0.5-1% worldwide. In this study, we aimed to investigate treatmental potential of dermis-derived cells in monobenzone (MBEH)-induced mouse vitiligo model with light and electron microscopy. MBEH (40%) cream was topically applied to C57BL/6 mice until depigmentation occured in vitiligo and experimental groups. In experimental groups, dermis-derived cells obtained from back skin biopsy samples before induction of vitiligo, were injected intradermally to vitiligo mice. On day 3 and 15 after cell transplantation to experimental groups, skin biopsies were compared with biopsies of control and vitiligo groups. Dermis-derived cells obtained from back skin biopsy samples of experimental groups showed nestin and versican immunoreactivity. Melanin in hair follicles of control group was detected by histochemical stainings (Hematoxylin&Eosin and Fontana-Masson) whereas sparse melanin granules were observed in hair follicles of vitiligo group. In experimental groups, there was an increase in the number of hair follicles with melanin compared to vitiligo group. We observed MART-1 immunoreactive cells mostly around the hair follicles in control group and within dermis in vitiligo group. Electron microscopic investigation showed presence of melanosomes in hair follicles of control group and lacking in vitiligo group. In experimental groups, both type of hair follicles were observed with electron microscope. Our data suggest that autologously transplanted dermis-derived cells may be effective in vitiligo treatment by contrubuting to melanin production.
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Affiliation(s)
- Aslı Erdoğan
- İstanbul University, İstanbul Faculty of Medicine, Department of Histology and Embryology, İstanbul, Turkey.,İstanbul University, Graduate School of Health Sciences, İstanbul, Turkey.,İzmir Kȃtip Çelebi University, Faculty of Medicine, Department of Histology and Embryology, İzmir, Turkey
| | - Hasan Serdar Mutlu
- İstanbul University, İstanbul Faculty of Medicine, Department of Histology and Embryology, İstanbul, Turkey.,Giresun University, Faculty of Medicine, Department of Histology and Embryology, Giresun, Turkey
| | - Seyhun Solakoğlu
- İstanbul University, İstanbul Faculty of Medicine, Department of Histology and Embryology, İstanbul, Turkey
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OZCAN Y, KARAGÜN E, ALPAY M. Interplay Between Vitiligo And Oxidative Stress: Evaluation Of The Mechanisms Of Autoımmune Diseases. KONURALP TIP DERGISI 2022. [DOI: 10.18521/ktd.880577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Song JW, Choi S, Kim G, Lee HB, Rao PS, Shin J, Kim EK, Cho DG. Isolation of a Melanoblast Stimulator from Dimocarpus longan, Its Structural Modification, and Structure-Activity Relationships for Vitiligo. Molecules 2022; 27:molecules27072135. [PMID: 35408531 PMCID: PMC9000856 DOI: 10.3390/molecules27072135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 03/22/2022] [Accepted: 03/24/2022] [Indexed: 01/27/2023] Open
Abstract
A novel melanoblast stimulator (1) was isolated from Dimocarpus longan. Its analogs were also synthesized to support a new furan-based melanoblast stimulator scaffold for treating vitiligo. Isolated 5-(hydroxymethyl)furfural (HMF, 1) is a well-known compound in the food industry. Surprisingly, the melanogenic activity of HMF (1) was discovered here for the first time. Both HMF and its synthetic analog (16) promote the differentiation and migration of melanoblasts in vitro. Typically, stimulator (1) upregulated MMP2 expression, which promoted the migration of melanoblasts in vitro.
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Affiliation(s)
- Jae-Won Song
- Department of Chemistry and Chemical Engineering, Inha University, Incheon 22212, Korea; (J.-W.S.); (P.S.R.)
| | - Sunju Choi
- Department of Biological Engineering, Inha University, Incheon 22212, Korea; (S.C.); (G.K.); (H.B.L.); (E.K.K.)
| | - Gayeong Kim
- Department of Biological Engineering, Inha University, Incheon 22212, Korea; (S.C.); (G.K.); (H.B.L.); (E.K.K.)
| | - Hyang Bok Lee
- Department of Biological Engineering, Inha University, Incheon 22212, Korea; (S.C.); (G.K.); (H.B.L.); (E.K.K.)
| | - P. Sankara Rao
- Department of Chemistry and Chemical Engineering, Inha University, Incheon 22212, Korea; (J.-W.S.); (P.S.R.)
| | - Jeonghyun Shin
- Department of Dermatology, School of Medicine, Inha University, Incheon 22212, Korea;
| | - Eun Ki Kim
- Department of Biological Engineering, Inha University, Incheon 22212, Korea; (S.C.); (G.K.); (H.B.L.); (E.K.K.)
| | - Dong-Gyu Cho
- Department of Chemistry and Chemical Engineering, Inha University, Incheon 22212, Korea; (J.-W.S.); (P.S.R.)
- Correspondence: ; Tel.: +82-32-860-7686
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Liu JW, Tan Y, Chen T, Liu W, Qian YT, Ma DL. Post-Traumatic Stress in Vitiligo Patients: A Neglected but Real-Existing Psychological Impairment. Clin Cosmet Investig Dermatol 2022; 15:373-382. [PMID: 35283640 PMCID: PMC8906700 DOI: 10.2147/ccid.s350000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 01/20/2022] [Indexed: 11/23/2022]
Abstract
Background Vitiligo is the most common depigmentation disorder. This disease causes disfiguration and induces psychological burdens, leading to significantly impaired quality of life. Limited research about disease-related post-traumatic stress (PTS) has been conducted in vitiligo patients. Objective To evaluate the prevalence, severity, and risk factors of post-traumatic stress in vitiligo patients. Methods This case-control study was performed from January 2021 to April 2021. A survey questionnaire including baseline information, post-traumatic stress symptoms evaluation, life quality evaluation was conducted. According to the severity of post-traumatic stress symptoms, patients were grouped and compared. The logistic regression model was conducted to analyze the risk factors for post-traumatic stress disorder (PTSD). Results A total of 337 patients were included. A 30.3% of vitiligo patients (102/337) in present cohort had PTS and 12.5% patients (42/337) were confirmed for developing into PTSD. The multivariate logistic regression revealed educational level<university (OR=2.32, 95% CI=1.97–2.93, P=0.003), vitiligo in face and neck (OR=2.65, 95% CI=2.08–3.12, P=0.008), vitiligo in feet and hands (OR=1.86, 95% CI=1.54–2.12, P<0.001) and surgical treatment (OR=3.53, 95% CI=3.12–4.02, P<0.001) were risk factors for PTSD. PTS severity was significantly associated with vitiligo disease activity score (rho=0.54, R2=0.29, P=0.002), vitiligo area scoring index score (r=0.55, R2=0.30, P=0.012), and dermatology life quality index score (r=0.61, R2=0.37, P=0.004). Conclusion Vitiligo-related PTS is prevalent in vitiligo patients and causes psychological impairment. Dermatologists should realize and identify this condition carefully and offer proactive intervention to improve patients’ quality of life.
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Affiliation(s)
- Jia-Wei Liu
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Clinical Research Center for Skin and Immune Diseases, Beijing, 100730, People's Republic of China
| | - Yan Tan
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Clinical Research Center for Skin and Immune Diseases, Beijing, 100730, People's Republic of China
| | - Tian Chen
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Clinical Research Center for Skin and Immune Diseases, Beijing, 100730, People's Republic of China
| | - Wei Liu
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Clinical Research Center for Skin and Immune Diseases, Beijing, 100730, People's Republic of China
| | - Yue-Tong Qian
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Clinical Research Center for Skin and Immune Diseases, Beijing, 100730, People's Republic of China
| | - Dong-Lai Ma
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Clinical Research Center for Skin and Immune Diseases, Beijing, 100730, People's Republic of China
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Research Progress on Targeted Antioxidant Therapy and Vitiligo. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:1821780. [PMID: 35320978 PMCID: PMC8938057 DOI: 10.1155/2022/1821780] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 12/19/2021] [Accepted: 01/22/2022] [Indexed: 12/14/2022]
Abstract
Vitiligo is a common acquired depigmenting disease characterized by the loss of functional melanocytes and epidermal melanin. Vitiligo has a long treatment cycle and slow results, which is one of the most difficult challenges for skin diseases. Oxidative stress plays an important role as an initiating and driving factor in the pathogenesis of vitiligo. Antioxidant therapy has recently become a research hotspot in vitiligo treatment. A series of antioxidants has been discovered and applied to the treatment of vitiligo, which has returned satisfactory results. This article briefly reviews the relationship between oxidative stress and vitiligo. We also describe the progress of targeted antioxidant therapy in vitiligo, with the aim of providing a reference for new drug development and treatment options for this condition.
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Georgescu SR, Mitran CI, Mitran MI, Matei C, Popa GL, Erel O, Tampa M. Thiol-Disulfide Homeostasis in Skin Diseases. J Clin Med 2022; 11:jcm11061507. [PMID: 35329832 PMCID: PMC8954849 DOI: 10.3390/jcm11061507] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/06/2022] [Accepted: 03/07/2022] [Indexed: 12/22/2022] Open
Abstract
Oxidative stress represents the imbalance between oxidants and antioxidants and has been associated with a wide range of diseases. Thiols are the most important compounds in antioxidant defense. There is an equilibrium between thiols and their oxidized forms, disulfides, known as dynamic thiol-disulfide homeostasis (TDH). In 2014, Erel and Neselioglu developed a novel automated assay to measure thiol and disulfide levels. Subsequently, many researchers have used this simple, inexpensive and fast method for evaluating TDH in various disorders. We have reviewed the literature on the role of TDH in skin diseases. We identified 26 studies that evaluated TDH in inflammatory diseases (psoriasis, seborrheic dermatitis, atopic dermatitis, vitiligo, acne vulgaris and rosacea), allergic diseases (acute and chronic urticaria) and infectious diseases (warts, pityriasis rosea and tinea versicolor). The results are heterogeneous, but in most cases indicate changes in TDH that shifted toward disulfides or toward thiols, depending on the extent of oxidative damage.
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Affiliation(s)
- Simona Roxana Georgescu
- Department of Dermatology, ‘Carol Davila’ University of Medicine and Pharmacy, 020021 Bucharest, Romania; (S.R.G.); (C.M.); (M.T.)
- Department of Dermatology, ‘Victor Babes’ Clinical Hospital for Infectious Diseases, 030303 Bucharest, Romania
| | - Cristina Iulia Mitran
- Department of Microbiology, ‘Carol Davila’ University of Medicine and Pharmacy, 020021 Bucharest, Romania;
| | - Madalina Irina Mitran
- Department of Microbiology, ‘Carol Davila’ University of Medicine and Pharmacy, 020021 Bucharest, Romania;
- Correspondence: (M.I.M.); (G.L.P.)
| | - Clara Matei
- Department of Dermatology, ‘Carol Davila’ University of Medicine and Pharmacy, 020021 Bucharest, Romania; (S.R.G.); (C.M.); (M.T.)
| | - Gabriela Loredana Popa
- Department of Parasitology, ‘Carol Davila’ University of Medicine and Pharmacy, 020021 Bucharest, Romania
- Correspondence: (M.I.M.); (G.L.P.)
| | - Ozcan Erel
- Biochemistry Laboratory, Ankara City Hospital, Ankara 06800, Turkey;
- Faculty of Medicine, Ankara Yildirim Beyazit University, Ankara 06010, Turkey
| | - Mircea Tampa
- Department of Dermatology, ‘Carol Davila’ University of Medicine and Pharmacy, 020021 Bucharest, Romania; (S.R.G.); (C.M.); (M.T.)
- Department of Dermatology, ‘Victor Babes’ Clinical Hospital for Infectious Diseases, 030303 Bucharest, Romania
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Occludin Promotes Adhesion of CD8+ T Cells and Melanocytes in Vitiligo via the HIF-1α Signaling Pathway. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:6732972. [PMID: 35222802 PMCID: PMC8865978 DOI: 10.1155/2022/6732972] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 12/23/2021] [Accepted: 01/11/2022] [Indexed: 11/17/2022]
Abstract
Loss of melanocytes induced by activated CD8+ T cells is the pathological hallmark of vitiligo. Melanocyte-specific CD8+ T cells are recruited to the skin via chemokines, thereby releasing perforin, granzyme, and other cytotoxic substances that destroy the melanocytes. However, the mechanism of CD8+ T cells to adhere to melanocytes is unknown. Previous transcriptome sequencing results published by our group showed that the occluding (OCLN) gene was significantly upregulated in CD8+ T cells from skin lesions of vitiligo. Occludin is a crucial component of the tight junction between cells; in cells without tight junction, occludin mediates the adhesion of two cells in the form of a self-ligand. This study demonstrated that OCLN gene expression was elevated in the CD8+ T cells of vitiligo patients, and occludin mediates the adherence of CD8+ T cells to melanocytes. Besides, pathological changes in vitiligo skin lesions reveal that CD8+ T cells continuously persist in the skin lesions, which is related to the persistence of the disease. In this regard, we found that fibroblasts from vitiligo patients significantly express occludin, which may participate in the continuous retention of CD8+ T cells in the skin lesions. The pathogenesis of vitiligo is closely related to oxidative stress, and our data suggest that overexpression of hypoxia-inducible factor-1α (HIF-1α) increases the expression of occludin. Besides, ChIP-qPCR of CD8+ T cells revealed that HIF-1α directly binds to the OCLN promoter. Thus, occludin upregulation promotes the adhesion of CD8+ T cells and melanocytes via the HIF-1α signaling pathway. Our study results suggested a critical role for OCLN in the occurrence, progression, and maintenance of vitiligo. Therefore, inhibiting the expression of OCLN gene may be a potential targeted treatment strategy.
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Jadeja SD, Vaishnav J, Bharti AH, Begum R. Elevated X-Box Binding Protein1 Splicing and Interleukin-17A Expression Are Associated With Active Generalized Vitiligo in Gujarat Population. Front Immunol 2022; 12:801724. [PMID: 35046957 PMCID: PMC8761938 DOI: 10.3389/fimmu.2021.801724] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 12/13/2021] [Indexed: 11/18/2022] Open
Abstract
Vitiligo is an autoimmune skin disorder defined by the destruction of functional epidermal melanocytes. It is a multifactorial and polygenic disorder caused due to oxidative stress, endoplasmic reticulum (ER) stress, and autoimmunity, among other factors. In the present study, we aimed to investigate the association of X-box Binding Protein 1 (XBP1) and Interleukin-17A (IL-17A) polymorphisms and monitor their systemic as well as skin expression levels in vitiligo patients from Gujarat population in India. XBP1 rs2269577 G/C, IL17A rs2275913 G/A and IL17A rs8193036 C/T polymorphisms were genotyped by Polymerase Chain Reaction-Restriction Fragment Length Polymorphism (PCR-RFLP) method in 312 controls and 276 vitiligo patients. Transcript levels of spliced (sXBP1), unspliced XBP1 (uXBP1) and IL17A from peripheral blood mononuclear cells (PBMCs) as well as spliced and unspliced XBP1 from skin samples were analyzed by qPCR. IL-17A protein levels in suction-induced blister fluid (SBF) from the skin of study subjects were estimated by ELISA. The results revealed that genotype (p=0.010) and allele (p=0.014) frequencies of XBP1 rs2269577 G/C polymorphism were significantly different, however, no significant difference was observed in frequencies of IL17A rs2275913 G/A and IL17A rs8193036 C/T polymorphisms in control and patient population. Gene expression analysis revealed that sXBP1 and IL17A levels were significantly higher in PBMCs of generalized (p=0.030 and p=0.039, respectively) and active (p=0.024 and p=0.017, respectively) vitiligo patients. Moreover, we observed a significantly elevated sXBP1 expression (p=0.037) as well as IL-17A protein levels (p=0.009) in perilesional skin of vitiligo patients as compared to controls. Overall, these findings suggest XBP1 and IL17A play an important role in vitiligo and further substantiate the involvement of ER stress in exacerbating immune-mediated vitiligo pathogenesis.
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Affiliation(s)
- Shahnawaz D Jadeja
- Department of Biochemistry, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara, India
| | - Jayvadan Vaishnav
- Department of Biochemistry, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara, India
| | - Ankit H Bharti
- Dermatology Department, Dr. Ankit's Dermatopathology Research Centre, Vyara, India
| | - Rasheedunnisa Begum
- Department of Biochemistry, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara, India
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Giri PS, Begum R, Dwivedi M. Meta-analysis for association of TNFA-308(G > A) SNP with vitiligo susceptibility. Gene 2022; 809:146027. [PMID: 34673212 DOI: 10.1016/j.gene.2021.146027] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 10/09/2021] [Accepted: 10/14/2021] [Indexed: 02/07/2023]
Abstract
Vitiligo is an autoimmune progressive skin depigmenting disease. Tumor necrosis factor alpha (TNF-α) is a pro-inflammatory cytokine and plays a crucial role in vitiligo development. Since there are conflicting results and consensus is lacking for the association of the TNFA gene -308 G > A polymorphism with vitiligo susceptibility; we performed a meta-analysis of all the available studies to investigate the association of TNFA -308 G > A polymorphism with vitiligo risk. 11 studies involving 2199 vitiligo patients and 3083 controls were included in the meta-analysis. The meta-analysis revealed an increased vitiligo risk with "AA", "GA" and "AA" + "GA" genotypes and 'A' allele in the overall (p = 0.006, p = 0.003, p = 0.001 & p = 0.003) and Egyptian populations (p = 0.001, p < 0.00001, p < 0.00001 & p = 0.002). Moreover, we found association for "GA" and "AA" + "GA" genotypes in Asian population (p = 0.0009 & p = 0.005) and for 'A' allele in Asian and middle eastern populations (p = 0.04 & p = 0.0002). Interestingly the disease activity based analysis revealed significant association for "GA", "AA" + "GA" genotypes and 'A' allele with active vitiligo patients in the North American population (p = 0.02). Moreover, we found significant association for "GA", "AA" + "GA" genotypes and 'A' allele with localized vitiligo in overall (p = 0.02, p = 0.02 & p = 0.04) and Asian (p = 0.004, p = 0.003 & p = 0.01) populations. Overall, our meta-analysis suggests the involvement of susceptible 'A' allele with: i) vitiligo susceptibility in overall population and specifically with Asian, Middle Eastern and Egyptian populations; ii) vitiligo disease activity in North American population and iii) localized vitiligo in overall population and specifically in Asian population.
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Affiliation(s)
- Prashant S Giri
- C. G. Bhakta Institute of Biotechnology, Faculty of Science, Uka Tarsadia University, Bardoli, Surat 394 350, Gujarat, India
| | - Rasheedunnisa Begum
- Department of Biochemistry, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara 390 002, Gujarat, India
| | - Mitesh Dwivedi
- C. G. Bhakta Institute of Biotechnology, Faculty of Science, Uka Tarsadia University, Bardoli, Surat 394 350, Gujarat, India.
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Dwivedi M, Laddha NC, Begum R. The Immunogenetics of Vitiligo: An Approach Toward Revealing the Secret of Depigmentation. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022; 1367:61-103. [PMID: 35286692 DOI: 10.1007/978-3-030-92616-8_3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Vitiligo is a hypomelanotic skin disease and considered to be of autoimmune origin due to breaching of immunological self-tolerance, resulting in inappropriate immune responses against melanocytes. The development of vitiligo includes a strong heritable component. Different strategies ranging from linkage studies to genome-wide association studies are used to explore the genetic factors responsible for the disease. Several vitiligo loci containing the respective genes have been identified which contribute to vitiligo and genetic variants for some of the genes are still unknown. These genes include mainly the proteins that play a role in immune regulation and a few other genes important for apoptosis and regulation of melanocyte functions. Despite the available data on genetic variants and risk alleles which influence the biological processes, only few immunological pathways have been found responsible for all ranges of severity and clinical manifestations of vitiligo. However, studies have concluded that vitiligo is of autoimmune origin and manifests due to complex interactions in immune components and their inappropriate response toward melanocytes. The genes involved in the immune regulation and processing the melanocytes antigen and its presentation can serve as effective immune-therapeutics that can target specific immunological pathways involved in vitiligo. This chapter highlights those immune-regulatory genes involved in vitiligo susceptibility and loci identified to date and their implications in vitiligo pathogenesis.
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Affiliation(s)
- Mitesh Dwivedi
- C. G. Bhakta Institute of Biotechnology, Uka Tarsadia University, Tarsadi, Surat, 394350, Gujarat, India.
| | - Naresh C Laddha
- In Vitro Specialty Lab Pvt. Ltd, 205-210, Golden Triangle, Navrangpura, Ahmedabad, 380009, Gujarat, India
| | - Rasheedunnisa Begum
- Department of Biochemistry, The Maharaja Sayajirao University of Baroda, Vadodara, 390002, Gujarat, India
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Singh M, Vaishnav J, Shah A, Begum R. Expression analysis of candidate genes in vitiligo patients & effect of oxidative stress on melanocytes. GENE REPORTS 2021. [DOI: 10.1016/j.genrep.2021.101389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Cetin Z, Kosem A, Catak M, Can B, Baser O, Guler S. The Relationship of Thyroid Functions With ADMA, IMA, and Metabolic Laboratory Parameters in Euthyroid Adults With and Without Autoimmune Thyroiditis. Lab Med 2021; 53:290-295. [PMID: 34792122 DOI: 10.1093/labmed/lmab098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
OBJECTIVE To investigate the relationship between thyroid functions and asymmetric dimethylarginine (ADMA), ischemia-modified albumin (IMA), and other metabolic laboratory markers in euthyroid adults and whether narrower thyroidal targets are required for lower metabolic risk. MATERIALS AND METHODS Thyroid functions, antithyroid autoantibodies, and metabolic parameters were measured for 115 patients. Forty-seven had autoimmune thyroiditis (AIT). Analyses were performed according to cutoff values of 1, 2, 2.5, and 3 mIU/L for thyrotropin, 0.84 ng/dL for free thyroxine (fT4), and 3.59 ng/dL for free tri-iodothyronine (fT3). RESULTS There was no relationship between thyrotropin and fT3 cutoff values and metabolic parameters. Only C-reactive protein was lower in the group with thyrotropin ≤2.5 μIU/L. A weak positive correlation was found between fT4 with IMA and IMA corrected for albumin (r = 0.187, P = .05; r = 0.204, P = .034, respectively). There was no difference between AIT and the metabolic laboratory parameters examined in the study. CONCLUSION This study is the first to evaluate ADMA in AIT. Narrower thyroid function targets are not required for better metabolic control in euthyroid adults.
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Affiliation(s)
- Zeynep Cetin
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Amasya University Medicine Faculty, Amasya, Turkey
| | - Arzu Kosem
- Department of Clinical Biochemistry, University of Health Sciences, Ankara City Hospital, Ankara, Turkey (current affiliation: University of Health Sciences, Diskapi Education and Research Hospital, Ankara, Turkey)
| | - Merve Catak
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Gaziosmanpaşa University Medicine Faculty, Tokat, Turkey
| | - Bulent Can
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Medeniyet University Medicine Faculty, Istanbul, Turkey
| | - Ozden Baser
- Department of Endocrinology and Metabolism, Yozgat City Hospital, Yozgat, Turkey
| | - Serdar Guler
- Department of Endocrinology and Metabolism, Liv Hospital, Ankara, Turkey
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Cui T, Wang Y, Song P, Yi X, Chen J, Yang Y, Wang H, Kang P, Guo S, Liu L, Li K, Jian Z, Li S, Li C. HSF1-Dependent Autophagy Activation Contributes to the Survival of Melanocytes Under Oxidative Stress in Vitiligo. J Invest Dermatol 2021; 142:1659-1669.e4. [PMID: 34780715 DOI: 10.1016/j.jid.2021.11.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 10/27/2021] [Accepted: 11/02/2021] [Indexed: 02/08/2023]
Abstract
Autophagy plays a protective role in oxidative stress‒induced melanocyte death. Dysregulated autophagy increases the sensitivity of melanocytes in response to oxidative damage and promotes melanocyte degeneration in vitiligo. However, the molecular mechanism underlying this process is not fully understood. In this study, using RNA-sequencing technology, we compared the transcriptome change between normal and vitiligo melanocytes with or without treatment of oxidative stress. We found that ATG5 and ATG12, the critical components for autophagosome formation, were significantly reduced in vitiligo melanocytes under oxidative stress. Mechanistically, HSF1 is the prime transcription factor for both ATG5 and ATG12, accounting for the reduced level of ATG5 and ATG12 in vitiligo melanocytes. Deficiency of HSF1 led to accumulation of intracellular ROS, imbalance of mitochondrion membrane potential, and apoptosis in melanocytes exposure to oxidative stress. Furthermore, overexpression of HSF1 could ameliorate oxidative stress‒induced melanocytes death through the activation of autophagy by upregulating ATG5 and ATG12. These findings suggested that targeting HSF1-ATG5/12 axis could prevent oxidative stress‒induced melanocyte death and may be used as a therapeutic strategy for vitiligo treatment.
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Affiliation(s)
- Tingting Cui
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Yinghan Wang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Pu Song
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Xiuli Yi
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Jiaxi Chen
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Yuqi Yang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Huina Wang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Pan Kang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Sen Guo
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Ling Liu
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Kai Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Zhe Jian
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Shuli Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Chunying Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China.
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Seebacher NA, Krchniakova M, Stacy AE, Skoda J, Jansson PJ. Tumour Microenvironment Stress Promotes the Development of Drug Resistance. Antioxidants (Basel) 2021; 10:1801. [PMID: 34829672 PMCID: PMC8615091 DOI: 10.3390/antiox10111801] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 10/29/2021] [Accepted: 11/08/2021] [Indexed: 01/18/2023] Open
Abstract
Multi-drug resistance (MDR) is a leading cause of cancer-related death, and it continues to be a major barrier to cancer treatment. The tumour microenvironment (TME) has proven to play an essential role in not only cancer progression and metastasis, but also the development of resistance to chemotherapy. Despite the significant advances in the efficacy of anti-cancer therapies, the development of drug resistance remains a major impediment to therapeutic success. This review highlights the interplay between various factors within the TME that collectively initiate or propagate MDR. The key TME-mediated mechanisms of MDR regulation that will be discussed herein include (1) altered metabolic processing and the reactive oxygen species (ROS)-hypoxia inducible factor (HIF) axis; (2) changes in stromal cells; (3) increased cancer cell survival via autophagy and failure of apoptosis; (4) altered drug delivery, uptake, or efflux and (5) the induction of a cancer stem cell (CSC) phenotype. The review also discusses thought-provoking ideas that may assist in overcoming the TME-induced MDR. We conclude that stressors from the TME and exposure to chemotherapeutic agents are strongly linked to the development of MDR in cancer cells. Therefore, there remains a vast area for potential research to further elicit the interplay between factors existing both within and outside the TME. Elucidating the mechanisms within this network is essential for developing new therapeutic strategies that are less prone to failure due to the development of resistance in cancer cells.
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Affiliation(s)
| | - Maria Krchniakova
- Department of Experimental Biology, Faculty of Science, Masaryk University, 62500 Brno, Czech Republic;
- International Clinical Research Center, St. Anne’s University Hospital, 65691 Brno, Czech Republic
| | - Alexandra E. Stacy
- Cancer Drug Resistance & Stem Cell Program, School of Medical Science, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW 2006, Australia;
| | - Jan Skoda
- Department of Experimental Biology, Faculty of Science, Masaryk University, 62500 Brno, Czech Republic;
- International Clinical Research Center, St. Anne’s University Hospital, 65691 Brno, Czech Republic
| | - Patric J. Jansson
- Cancer Drug Resistance & Stem Cell Program, School of Medical Science, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW 2006, Australia;
- Bill Walsh Translational Cancer Research Laboratory, Kolling Institute, Faculty of Medicine and Health, The University of Sydney, St. Leonards, NSW 2065, Australia
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The Formation of Melanocyte Apoptotic Bodies in Vitiligo and the Relocation of Vitiligo Autoantigens under Oxidative Stress. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:7617839. [PMID: 34745423 PMCID: PMC8568525 DOI: 10.1155/2021/7617839] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 09/24/2021] [Accepted: 09/27/2021] [Indexed: 11/17/2022]
Abstract
Background Oxidative stress has a vital role in the early stages of vitiligo. Autoantigens released from apoptotic melanocytes (MC) under oxidative stress are involved in the presentation and recognition of antigens. However, the transport of autoantigens to the cell surface and their release to the extracellular environment are still unclear. Apoptotic bodies (ABs) have always been considered as a key source of immunomodulators and autoantigens. Yet, the role of ABs in the immune mechanism of vitiligo is still unknown. Purpose To explore whether MC's autoantigens translocate into ABs during oxidative stress-induced apoptosis and study the molecular mechanisms underlying autoantigen migration and AB formation. Methods PIG3V (an immortalized human vitiligo melanocyte cell line) were treated with H2O2, and ABs were separated. Transmission electron microscopy, flow cytometry, Western blot, mass spectrometry, and other methods were used to determine the relocation of specific antigens in PIG3V cells to ABs. After pretreatment with specific inhibitors (Rho kinase (Y-27632), myosin light chain kinase (MLCK, ML-9), pan-caspase (zVAD-FMK), and JNK (SP600125)), the pathway of autoantigen translocation into ABs and the formation of apoptotic bodies were determined. Results When treated with 0.8 mM H2O2, ABs were released from these cells. Autoantigens such as tyrosinase-related protein 1 (TYRP-1) and cleavage nuclear membrane antigen Lamin A/C (Asp230) were concentrated in ABs. The expression of autoantigens and the formation of ABs increased in a time- and dose-dependent manner after treatment with H2O2, while the application of specific inhibitors inhibited the formation of apoptotic bodies, i.e., the expression of antigens. Conclusion Vitiligo autoantigens translocate into ABs in the process of apoptosis induced by oxidative stress. The cytoskeletal protein activation pathway and the JNK-related apoptosis pathway are involved in the transport of autoantigens and the formation of ABs. ABs may be the key bridge between MC cell apoptosis and cellular immunity.
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Xu P, Xue YN, Ji HH, Tan C, Guo S. H 2 O 2 -induced oxidative stress disrupts mitochondrial functions and impairs migratory potential of human epidermal melanocytes. Exp Dermatol 2021; 29:733-741. [PMID: 32580253 DOI: 10.1111/exd.14134] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 05/23/2020] [Accepted: 06/17/2020] [Indexed: 12/14/2022]
Abstract
Reactive oxygen species (ROS) have already been demonstrated to impede the migratory ability in non-melanocytic cell lines by depleting mitochondrial ATP production. Therefore, understanding the mitochondrial metabolic response to migration in the presence of ROS should be a key to understanding repigmentation in vitiligo. This study aimed to investigate the energy mechanism associated with the ROS-mediated attenuation of melanocyte migration. After melanocytes were pretreated with H2 O2 , their ATP production, migratory ability, ultrastructural changes and Mitochondrial Permeability Potential were analysed. The results showed that, in parallel with the decreased ATP production, the migratory ability of melanocytes was significantly inhibited by oxidative stress. Supplementation with exogenous ATP reversed the suppressed ATP-dependent migration of melanocytes. Melanocytes were then stressed with H2 O2 and Agilent Whole Human Genome microarray analysis identified 763 up-regulated mRNAs and 1117 down-regulated mRNAs. Among them, 11 of the encoded proteins were involved in mitochondrial ATP production and their expression levels were verified. The decreased expression of NADH dehydrogenase 2(ND2) , cytochrome c oxidase 1(COX1) and cytochrome c oxidase 3(COX3) was shown to be involved in the depletion of mitochondrial ATP production, which was coupled with the impaired migratory potential. These results indicate that the migration of melanocytes relies heavily on an inexhaustible supply of ATP from mitochondria.
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Affiliation(s)
- Ping Xu
- Department of Dermatology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.,First Clinical College, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yan-Ning Xue
- Department of Dermatology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Hui-Hui Ji
- Department of Dermatology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Cheng Tan
- Department of Dermatology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Shun Guo
- Department of Dermatology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
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Shah F, Patel S, Begum R, Dwivedi M. Emerging role of Tissue Resident Memory T cells in vitiligo: From pathogenesis to therapeutics. Autoimmun Rev 2021; 20:102868. [PMID: 34118458 DOI: 10.1016/j.autrev.2021.102868] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 03/20/2021] [Indexed: 02/07/2023]
Abstract
Vitiligo is an acquired depigmenting disorder which affects both skin and mucous membranes and autoimmunity has been strongly suggested to play a role in loss of melanocytes. The recurrence of skin macules at the same sites where they were observed prior to the treatment, suggests the existence of Tissue Resident Memory T cells (TRMs) that persist within the skin or peripheral tissues with a longer survivability. Emerging studies have shown that reactivation of these skin TRMs results into autoreactive TRM cells in various autoimmune diseases including vitiligo. This review focuses on different subsets (CD8+ TRMs and CD4+ TRMs) of TRM cells, their retention and survivability in the skin along with their pathomechanisms leading to melanocyte death and progression of vitiligo. In addition, the review describes the TRM cells as potential targets for developing effective therapeutics of vitiligo.
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Affiliation(s)
- Firdosh Shah
- C. G. Bhakta Institute of Biotechnology, Uka Tarsadia University, Tarsadi, Surat 394350, Gujarat, India
| | - Shivani Patel
- C. G. Bhakta Institute of Biotechnology, Uka Tarsadia University, Tarsadi, Surat 394350, Gujarat, India
| | - Rasheedunnisa Begum
- Department of Biochemistry, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara 390 002, Gujarat, India
| | - Mitesh Dwivedi
- C. G. Bhakta Institute of Biotechnology, Uka Tarsadia University, Tarsadi, Surat 394350, Gujarat, India.
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The Great Capacity on Promoting Melanogenesis of Three Compatible Components in Vernonia anthelmintica (L.) Willd.. Int J Mol Sci 2021; 22:ijms22084073. [PMID: 33920793 PMCID: PMC8071200 DOI: 10.3390/ijms22084073] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 04/05/2021] [Accepted: 04/07/2021] [Indexed: 01/08/2023] Open
Abstract
To investigate a possible methodology of exploiting herbal medicine and design polytherapy for the treatment of skin depigmentation disorder, we have made use of Vernonia anthelmintica (L.) Willd., a traditional Chinese herbal medicine that has been proven to be effective in treating vitiligo. Here, we report that the extract of Vernonia anthelmintica (L.) Willd. effectively enhances melanogenesis responses in B16F10. In its compound library, we found three ingredients (butin, caffeic acid and luteolin) also have the activity of promoting melanogenesis in vivo and in vitro. They can reduce the accumulation of ROS induced by hydrogen peroxide and inflammatory response induced by sublethal concentrations of copper sulfate in wild type and green fluorescent protein (GFP)-labeled leukocytes zebrafish larvae. The overall objective of the present study aims to identify which compatibility proportions of the medicines may be more effective in promoting pigmentation. We utilized the D-optimal response surface methodology to optimize the ratio among three molecules. Combining three indicators of promoting melanogenesis, anti-inflammatory and antioxidant capacities, we get the best effect of butin, caffeic acid and luteolin at the ratio (butin:caffeic acid:luteolin = 7.38:28.30:64.32) on zebrafish. Moreover, the effect of melanin content recovery in the best combination is stronger than that of the monomer, which suggests that the three compounds have a synergistic effect on inducing melanogenesis. After simply verifying the result, we performed in situ hybridization on whole-mount zebrafish embryos to further explore the effects of multi-drugs combination on the proliferation and differentiation of melanocytes and the expression of genes (tyr, mitfa, dct, kit) related to melanin synthesis. In conclusion, the above three compatible compounds can significantly enhance melanogenesis and improve depigmentation in vivo.
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