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Luan M, Niu M, Yang P, Han D, Zhang Y, Li W, He Q, Zhao Y, Mao B, Chen J, Mou K, Li P. Metagenomic sequencing reveals altered gut microbial compositions and gene functions in patients with non-segmental vitiligo. BMC Microbiol 2023; 23:265. [PMID: 37737154 PMCID: PMC10515041 DOI: 10.1186/s12866-023-03020-7] [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: 11/15/2022] [Accepted: 09/13/2023] [Indexed: 09/23/2023] Open
Abstract
BACKGROUND Vitiligo has been correlated with an abnormal gut microbiota. We aimed to systematically identify characteristics of the gut microbial compositions, genetic functions, and potential metabolic features in patients with non-segmental vitiligo. METHODS Twenty-five patients with non-segmental vitiligo and 25 matched healthy controls (HCs) were enrolled. Metagenomic sequencing and bioinformatic analysis were performed to determine the gut microbiota profiles. Differences in gut microbiota diversity and composition between patients with vitiligo and HCs were analyzed. Gene functions and gut metabolic modules were predicted with the Kyoto Encyclopedia of Gene and Genomes (KEGG) and MetaCyc databases. RESULTS Compared with HCs, alpha diversity of intestinal microbiome in vitiligo patients was significantly reduced. At the species level, the relative abundance of Staphylococcus thermophiles was decreased, and that of Bacteroides fragilis was increased in patients with vitiligo compared with those of the HCs. Linear discriminant analysis (LDA) effect size (LEfSe) analysis revealed representative microbial markers of Lachnospiraceae_bacterium_BX3, Massilioclostridium_coli, TM7_phylum_sp_oral_taxon_348 and Bacteroides_fragilis for patients with vitiligo. KEGG gene function analysis showed that the NOD-like receptor signaling pathway was significantly enriched in patients with vitiligo. Gut metabolic modules (GMMs) analysis showed that cysteine degradation was significantly down-regulated, and galactose degradation was up-regulated in patients with vitiligo. A panel of 28 microbial features was constructed to distinguish patients with vitiligo from HCs. CONCLUSIONS The gut microbial profiles and genetic functions of patients with vitiligo were distinct from those of the HCs. The identified gut microbial markers may potentially be used for earlier diagnosis and treatment targets.
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Affiliation(s)
- Mei Luan
- Department of Dermatology, the Frist Affiliated Hospital of Xi'an Jiaotong University, 277 West Yanta Road, 710061, Xi'an, Shaanxi, People's Republic of China
| | - Mengtian Niu
- Department of Dermatology, the Frist Affiliated Hospital of Xi'an Jiaotong University, 277 West Yanta Road, 710061, Xi'an, Shaanxi, People's Republic of China
| | - Pengju Yang
- Department of Dermatology, the Frist Affiliated Hospital of Xi'an Jiaotong University, 277 West Yanta Road, 710061, Xi'an, Shaanxi, People's Republic of China
| | - Dan Han
- Department of Dermatology, the Frist Affiliated Hospital of Xi'an Jiaotong University, 277 West Yanta Road, 710061, Xi'an, Shaanxi, People's Republic of China
| | - Yudan Zhang
- Center for Translational Medicine, the Frist Affiliated Hospital of Xi'an Jiaotong University, 277 West Yanta Road, 710061, Xi'an, Shaanxi, People's Republic of China
| | - Weizhe Li
- Department of Dermatology, the Frist Affiliated Hospital of Xi'an Jiaotong University, 277 West Yanta Road, 710061, Xi'an, Shaanxi, People's Republic of China
| | - Qiannan He
- Department of Dermatology, the Frist Affiliated Hospital of Xi'an Jiaotong University, 277 West Yanta Road, 710061, Xi'an, Shaanxi, People's Republic of China
| | - Yixin Zhao
- Department of Dermatology, the Frist Affiliated Hospital of Xi'an Jiaotong University, 277 West Yanta Road, 710061, Xi'an, Shaanxi, People's Republic of China
| | - Binyue Mao
- Department of Dermatology, the Frist Affiliated Hospital of Xi'an Jiaotong University, 277 West Yanta Road, 710061, Xi'an, Shaanxi, People's Republic of China
| | - Jianan Chen
- Department of Dermatology, the Frist Affiliated Hospital of Xi'an Jiaotong University, 277 West Yanta Road, 710061, Xi'an, Shaanxi, People's Republic of China
| | - Kuanhou Mou
- Department of Dermatology, the Frist Affiliated Hospital of Xi'an Jiaotong University, 277 West Yanta Road, 710061, Xi'an, Shaanxi, People's Republic of China.
| | - Pan Li
- Center for Translational Medicine, the Frist Affiliated Hospital of Xi'an Jiaotong University, 277 West Yanta Road, 710061, Xi'an, Shaanxi, People's Republic of China.
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Yang H, Song J, Li A, Lv L, Sun X, Mao Y, Ye D. Genetically predicted levels of folate, vitamin B12, and risk of autoimmune diseases: A Mendelian randomization study. Front Immunol 2023; 14:1139799. [PMID: 36969181 PMCID: PMC10038229 DOI: 10.3389/fimmu.2023.1139799] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Accepted: 02/24/2023] [Indexed: 03/12/2023] Open
Abstract
BackgroundEvidence from observational studies on the association of folate and vitamin B12 with autoimmune diseases are conflicting.ObjectiveWe aimed to investigate the relationship of folate and vitamin B12 with autoimmune diseases using Mendelian randomization (MR).Materials and methodsWe selected single-nucleotide polymorphisms associated with folate and vitamin B12 at the genome-wide significance level. Summary-level data for four common autoimmune diseases (vitiligo, inflammatory bowel disease, rheumatoid arthritis, and systemic lupus erythematosus) were obtained from large-scale genome-wide association studies, with a sample size of 44,266, 86,640, 58,284, and 23,210, respectively. MR analyses were conducted using the inverse variance weighted (IVW) approach, and sensitivity analyses were further performed to test the robustness.ResultsWe found that a higher genetically determined serum folate level per one standard deviation (SD) was associated with a decreased risk of vitiligo by the IVW method [odds ratios (OR) = 0.47; 95% confidence interval (CI): 0.32–0.69; P = 1.33 × 10-4]. Sensitivity analyses using alternative methods showed similar associations, and no evidence of pleiotropy was detected by MR-Egger regression (P = 0.919). In addition, we observed that vitamin B12 per one SD was positively associated with IBD (IVW: OR = 1.14, 95% CI: 1.03–1.26, P = 0.010; maximum likelihood: OR = 1.14, 95% CI: 1.01–1.29, P = 0.035; MR-PRESSO: OR = 1.14, 95% CI:1.01–1.28, P =0.037), while the association was not significant after Bonferroni correction.ConclusionThe study provides convincing evidence for an inverse association between serum folate level and risk of vitiligo. Further studies are warranted to elucidate the possible association between vitamin B12 and risk of IBD.
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Affiliation(s)
- Hong Yang
- Department of Epidemiology, School of Public Health, Zhejiang Chinese Medical University, Hangzhou, China
| | - Jie Song
- Department of Epidemiology, School of Public Health, Zhejiang Chinese Medical University, Hangzhou, China
| | - Aole Li
- The Fourth College of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou, China
| | - Linshuoshuo Lv
- Department of Epidemiology, School of Public Health, Zhejiang Chinese Medical University, Hangzhou, China
| | - Xiaohui Sun
- Department of Epidemiology, School of Public Health, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yingying Mao
- Department of Epidemiology, School of Public Health, Zhejiang Chinese Medical University, Hangzhou, China
- *Correspondence: Ding Ye, ; Yingying Mao,
| | - Ding Ye
- Department of Epidemiology, School of Public Health, Zhejiang Chinese Medical University, Hangzhou, China
- *Correspondence: Ding Ye, ; Yingying Mao,
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Lee JH, Ju HJ, Seo JM, Almurayshid A, Kim GM, Ezzedine K, Bae JM. Comorbidities in Patients with Vitiligo: A Systematic Review and Meta-Analysis. J Invest Dermatol 2022; 143:777-789.e6. [PMID: 36574529 DOI: 10.1016/j.jid.2022.10.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 10/18/2022] [Accepted: 10/22/2022] [Indexed: 11/29/2022]
Abstract
Vitiligo has been reported to be associated with a variety of diseases, but it has not been systematically reviewed. Therefore, we aimed to identify prevalent diseases in patients with vitiligo and quantify their associations compared with those in healthy controls. A comprehensive search of MEDLINE and EMBASE from the inception to June 2022 was conducted. Observational studies on prevalent diseases in patients with vitiligo compared with those in healthy controls were included, whereas studies limited to pediatrics or providing only laboratory results were excluded. A total of 78 studies were eligible for analyses. Patients with vitiligo showed higher risks of having comorbid autoimmune and connective tissue diseases, including alopecia areata (OR = 2.63, 95% confidence interval [CI] = 2.50‒2.78), discoid lupus erythematosus (OR = 2.54, 95% CI = 1.74‒3.72), Sjogren's syndrome (OR = 2.50, 95% CI = 1.98‒3.16), myasthenia gravis (OR = 2.30, 95% CI = 1.74‒3.02), systemic lupus erythematosus (OR = 1.96, 95% CI = 1.52‒2.52), and rheumatoid arthritis (OR = 1.82, 95% CI = 1.55‒2.15). Thyroid diseases, diabetes mellitus, metabolic syndrome, sensorineural hypoacusis, and ophthalmic abnormalities were also more prevalent in patients with vitiligo. In conclusion, vitiligo is associated with various systemic diseases. Physicians should evaluate and manage potential comorbid conditions in patients with vitiligo.
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Affiliation(s)
- Ji Hae Lee
- Department of Dermatology, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea
| | - Hyun Jeong Ju
- Department of Dermatology, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea
| | - Ji Min Seo
- Department of Dermatology, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu, Korea
| | - Abdurrahman Almurayshid
- Department of Medicine, College of Medicine, Prince Sattam Bin Abdulaziz University, Al-Kharj City, Saudi Arabia
| | - Gyong Moon Kim
- Department of Dermatology, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea
| | - Khaled Ezzedine
- Department of Dermatology, Henry Mondor Hospital, Paris Est Créteil University, Créteil, France
| | - Jung Min Bae
- Department of Dermatology, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea.
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Kang P, Zhang WG, Ji ZH, Shao ZJ, Li CY. Zusammenhang zwischen Vitiligo und wichtigen Komponenten des metabolischen Syndroms: eine systematische Übersicht und Metaanalyse. J Dtsch Dermatol Ges 2022; 20:629-642. [PMID: 35578427 DOI: 10.1111/ddg.14717_g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 12/05/2021] [Indexed: 01/10/2023]
Abstract
HINTERGRUND UND ZIELE Ziel dieser Studie war die Untersuchung des Zusammenhangs zwischen Vitiligo und dem metabolischen Syndrom (MetS) sowie dessen relevanten Komponenten. MATERIAL UND METHODEN Die Datenbanken PubMed, Web of Science, Cochrane Library und Embase wurden von deren Beginn bis zum 30. März 2021 nach relevanten Studien durchsucht. Querschnitts- und Fall-Kontroll-Studien, die entweder die Prävalenz oder die Odds-Ratio [OR] des MetS oder seiner Komponenten bei Vitiligo-Patienten berichteten, wurden eingeschlossen. Die Daten wurden entsprechend der Heterogenität entweder mit einem Zufallseffektmodell oder einem Modell mit festen Effekten gepoolt. ERGEBNISSE Es wurden 30 Studien mit insgesamt 28.325 Vitiligo-Patienten eingeschlossen. Signifikante Zusammenhänge wurden zwischen Vitiligo und Diabetes mellitus (gepoolte OR, 3,30; 95 %-Konfidenzintervall [KI], 2,10-5,17) sowie zwischen Vitiligo und Adipositas (gepoolte OR, 2,08; 95 %-KI, 1,40-3,11) ermittelt. Die Gesamtprävalenz der Hypertonie bei Patienten mit Vitiligo betrug 19,0 % (95 %-KI, 2,0 %-36,0 %). SCHLUSSFOLGERUNGEN Unserer Ergebnisse lassen auf einen Zusammenhang zwischen Vitiligo und Diabetes mellitus sowie Hypertonie schließen. Dermatologen wird empfohlen diese Zusammenhänge zu berücksichtigen, um potenzielle Begleiterkrankungen bei Vitiligo-Patienten zeitnah zu identifizieren. Zudem wird Vitiligo-Patienten empfohlen, Parameter wie BMI, Blutzuckerspiegel und Blutdruck zu überwachen und bei auffälligen Veränderungen dieser Parameter unverzüglich einen Spezialisten zu konsultieren.
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Affiliation(s)
- Pan Kang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China.,Department of Epidemiology, School of Public Health, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Wei-Gang Zhang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Zhao-Hua Ji
- Department of Epidemiology, School of Public Health, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Zhong-Jun Shao
- Department of Epidemiology, School of Public Health, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Chun-Ying Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
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Kang P, Zhang WG, Ji ZH, Shao ZJ, Li CY. Association between vitiligo and relevant components of metabolic syndrome: a systematic review and meta-analysis. J Dtsch Dermatol Ges 2022; 20:629-641. [PMID: 35499212 DOI: 10.1111/ddg.14717] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 12/05/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND OBJECTIVES This study aimed to investigate the association of vitiligo with metabolic syndrome (MetS) and its relevant components. MATERIAL AND METHODS We searched PubMed, Web of Science, Cochrane Library and Embase databases from inception to March 30, 2021, for relevant studies. Cross-sectional and case-control studies that reported either the prevalence or odds ratio [OR] of MetS or its components in vitiligo patients were included. Data were pooled using either random-effects model or fixed-effects model according to the heterogeneity. RESULTS Thirty studies with a total of 28,325 vitiligo patients were included. Significant associations were found between vitiligo and diabetes mellitus (pooled OR, 3.30; 95 % confidence interval [CI], 2.10-5.17) and between vitiligo and obesity (pooled OR, 2.08; 95 % CI, 1.40-3.11). The overall prevalence of hypertension in the patients with vitiligo was 19.0 % (95 % CI, 2.0 %-36.0 %). CONCLUSIONS Our findings suggest the association of vitiligo with diabetes mellitus, obesity, and hypertension. It is recommended for dermatologists to take these associations into account so as to identify potential comorbidities promptly in vitiligo patients. Additionally, vitiligo patients are advised to monitor the indexes including BMI, blood glucose, and blood pressure levels and the consultation with specialists is necessary upon abnormal changes of these indexes.
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Affiliation(s)
- Pan Kang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China.,Department of Epidemiology, School of Public Health, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Wei-Gang Zhang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Zhao-Hua Ji
- Department of Epidemiology, School of Public Health, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Zhong-Jun Shao
- Department of Epidemiology, School of Public Health, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Chun-Ying Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
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Boo YC. Metabolic Basis and Clinical Evidence for Skin Lightening Effects of Thiol Compounds. Antioxidants (Basel) 2022; 11:antiox11030503. [PMID: 35326153 PMCID: PMC8944565 DOI: 10.3390/antiox11030503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 03/03/2022] [Accepted: 03/03/2022] [Indexed: 12/17/2022] Open
Abstract
Melanin pigment is a major factor in determining the color of the skin, and its abnormal increase or decrease can cause serious pigmentation disorders. The melanin pigment of the skin is divided into light pheomelanin and dark eumelanin, and a big difference between them is whether they contain sulfur. Melanin synthesis starts from a common reaction in which tyrosine or dihydroxyphenylalanine (DOPA) is oxidized by tyrosinase (TYR) to produce dopaquinone (DQ). DQ is spontaneously converted to leukodopachrome and then oxidized to dopachrome, which enters the eumelanin synthesis pathway. When DQ reacts with cysteine, cysteinyl dopa is generated, which is oxidized to cysteinyl DQ and enters the pheomelanin synthesis pathway. Therefore, thiol compounds can influence the relative synthesis of eumelanin and pheomelanin. In addition, thiol compounds can inhibit enzymatic activity by binding to copper ions at the active site of TYR, and act as an antioxidant scavenging reactive oxygen species and free radicals or as a modulator of redox balance, thereby inhibiting overall melanin synthesis. This review will cover the metabolic aspects of thiol compounds, the role of thiol compounds in melanin synthesis, comparison of the antimelanogenic effects of various thiol compounds, and clinical trials on the skin lightening efficacy of thiol compounds. We hope that this review will help identify the advantages and disadvantages of various thiol compounds as modulators of skin pigmentation and contribute to the development of safer and more effective strategies for the treatment of pigmentation disorders.
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Affiliation(s)
- Yong Chool Boo
- Department of Molecular Medicine, School of Medicine, Kyungpook National University, 680 Gukchaebosang-ro, Jung-gu, Daegu 41944, Korea;
- BK21 Plus KNU Biomedical Convergence Program, Kyungpook National University, 680 Gukchaebosang-ro, Jung-gu, Daegu 41944, Korea
- Cell and Matrix Research Institute, Kyungpook National University, 680 Gukchaebosang-ro, Jung-gu, Daegu 41944, Korea
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Xie Y, Liu B, Wu Z. Identification of Serum Biomarkers and Pathways of Systemic Lupus Erythematosus with Skin Involvement Through GC/MS-Based Metabolomics Analysis. Clin Cosmet Investig Dermatol 2022; 15:77-86. [PMID: 35082507 PMCID: PMC8784912 DOI: 10.2147/ccid.s345372] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 12/23/2021] [Indexed: 12/19/2022]
Abstract
Purpose Skin involvement is the second most common symptom of systemic lupus erythematosus (SLE), and the prevention of skin lesion development might benefit to lessen the system inflammation burden in SLE. However, the mechanisms of skin lesion in SLE remain unclear. Patients and Methods Metabolome based on gas chromatography-mass spectrometry (GC-MS) was used for comparison of serum metabolism among 11 SLE patients with skin lesion (SL), 10 SLE patients without skin lesion (SNL), and 16 healthy controls (HC). The analysis of metabolism profiles was through LUG database, Human Metabolome Database (HMDB) as well as Kyoto Encyclopedia of Genes and Genomes (KEGG). Results A total of 14 most meaningful metabolites were found in SL patients compared to SNL patients, and 19 metabolic pathways were enriched. Meanwhile, L-alpha-aminobutyric acid, dehydroascorbic acid, glycine, and L-tyrosine achieved an area under receiver-operating characteristic (ROC) curve of 0.8636, 0.8091, 0.7727, and 0.7636, respectively, indicating their diagnostic potential for SL patients. In addition, the combined model of L-alpha-aminobutyric acid and dehydroascorbic acid provided better diagnostic accuracy. Conclusion The metabolomic features of SLE patients with skin lesion could be detected by GC/MS assay. Our study tried to provide new insights into the mechanism of SLE skin injury. Further validation of these findings through larger sample size studies may contribute to the use of metabolic profile analysis.
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Affiliation(s)
- Yongyi Xie
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, People's Republic of China
| | - Baoyi Liu
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, People's Republic of China
| | - Zhouwei Wu
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, People's Republic of China
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Folic Acid Protects Melanocytes from Oxidative Stress via Activation of Nrf2 and Inhibition of HMGB1. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:1608586. [PMID: 34917229 PMCID: PMC8670940 DOI: 10.1155/2021/1608586] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 11/13/2021] [Accepted: 11/13/2021] [Indexed: 12/21/2022]
Abstract
Vitiligo is a cutaneous depigmentation disease due to loss of epidermal melanocytes. Accumulating evidence has indicated that oxidative stress plays a vital role in vitiligo via directly destructing melanocytes and triggering inflammatory response that ultimately undermines melanocytes. Folic acid (FA), an oxidized form of folate with high bioavailability, exhibits potent antioxidant properties and shows therapeutic potential in multiple oxidative stress-related diseases. However, whether FA safeguards melanocytes from oxidative damages remains unknown. In this study, we first found that FA relieved melanocytes from H2O2-induced abnormal growth and apoptosis. Furthermore, FA enhanced the activity of antioxidative enzymes and remarkably reduced intracellular ROS levels in melanocytes. Subsequently, FA effectively activated nuclear factor E2-related factor 2 (Nrf2) pathway, and Nrf2 knockdown blocked the protective effects of FA on H2O2-treated melanocytes. Additionally, FA inhibited the production of proinflammatory HMGB1 in melanocytes under oxidative stress. Taken together, our findings support the protective effects of FA on human melanocytes against oxidative injury via the activation of Nrf2 and the inhibition of HMGB1, thus indicating FA as a potential therapeutic agent for the treatment of vitiligo.
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Li S, Dai W, Wang S, Kang P, Ye Z, Han P, Zeng K, Li C. Clinical Significance of Serum Oxidative Stress Markers to Assess Disease Activity and Severity in Patients With Non-Segmental Vitiligo. Front Cell Dev Biol 2021; 9:739413. [PMID: 34977005 PMCID: PMC8716723 DOI: 10.3389/fcell.2021.739413] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Accepted: 11/16/2021] [Indexed: 11/13/2022] Open
Abstract
Non-segmental vitiligo (NSV) is a chronic autoimmune disease characterized by progressive depigmentation of the skin. Oxidative stress (OS) has been proposed as one among the main principal causes in the development and establishment of a sustained autoimmune state in patients with NSV. However, the disease-associated OS biomarkers in clinical practice are not well studied. In this study, we found significantly reduced antioxidant enzymes [catalase (CAT) and superoxide dismutase (SOD)], total antioxidant capacity (TAC), and increased levels of lipid oxidation product malondialdehyde (MDA) and oxidative DNA damage byproduct [8-hydroxy-2-deoxyguanosine (8-OHdG)] in serum of NSV patients compared with healthy controls (HC). Serum TAC, MDA, and 8-OHdG levels were correlated with disease activity in all patients with NSV and much lower in patients receiving conventional treatment in the past 1 year compared to that without treatment. In addition, both serum MDA and 8-OHdG levels were significantly correlated with CXCL10 expression in patients with NSV. And the serum TAC, MDA, and 8-OHdG levels were also correlated with affected body surface area and Vitiligo Area Scoring Index score in patients with NSV. This study demonstrates dysregulated OS status in patients with NSV and provides the evidence that the serum TAC, MDA, and 8-OHdG have a capacity to indicate the activity and severity in patients with NSV.
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Affiliation(s)
- Shuli Li
- Department of Dermatology and Venereology, Nanfang Hospital, Southern Medical University, Guangdong, China
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi’an, China
| | - Wei Dai
- Department of Dermatology and Venereology, Nanfang Hospital, Southern Medical University, Guangdong, China
| | - Sijia Wang
- Department of Dermatology and Venereology, Nanfang Hospital, Southern Medical University, Guangdong, China
| | - Pan Kang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi’an, China
| | - Zhubiao Ye
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi’an, China
| | - Peng Han
- Department of Dermatology and Venereology, Nanfang Hospital, Southern Medical University, Guangdong, China
- Department of Otolaryngology, First Affiliated Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Kang Zeng
- Department of Dermatology and Venereology, Nanfang Hospital, Southern Medical University, Guangdong, China
| | - Chunying Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi’an, China
- *Correspondence: Chunying Li,
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Clinical Features, Immunopathogenesis, and Therapeutic Strategies in Vitiligo. Clin Rev Allergy Immunol 2021; 61:299-323. [PMID: 34283349 DOI: 10.1007/s12016-021-08868-z] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/31/2021] [Indexed: 12/19/2022]
Abstract
Vitiligo is an autoimmune disease of the skin characterized by epidermal melanocyte loss resulting in white patches, with an approximate prevalence of 0.5-2% worldwide. Several precipitating factors by chemical exposure and skin injury present commonly in patients with vitiligo. Although the diagnosis appears to be straightforward for the distinct clinical phenotype and specific histological features, vitiligo provides many challenges including chronicity, treatment resistance, frequent relapse, associated profound psychosocial effect, and negative impact on quality of life. Multiple mechanisms are involved in melanocyte disappearance, including genetics, environmental factors, and immune-mediated inflammation. Compelling evidence supports the melanocyte intrinsic abnormalities with poor adaptation to stressors leading to instability and release of danger signals, which will activate dendritic cells, natural killer cells, and innate lymphoid cells to initiate innate immunity, ultimately resulting in T-cell mediated adaptive immune response and melanocyte destruction. Importantly, the cross- talk between keratinocytes, melanocytes, and immune cells, such as interferon (IFN)-γ signaling pathway, builds inflammatory loops that give rise to the disease deterioration. Improved understanding of the immune pathogenesis of vitiligo has led to the development of new therapeutic options including Janus kinase (JAK) inhibitors targeting IFN-γ signaling pathways, which can effectively reverse depigmentation. Furthermore, definition of treatment goals and integration of comorbid diseases into vitiligo management have revolutionized the way vitiligo is treated. In this review, we highlight recent developments in vitiligo clinical aspects and immune pathogenesis. Our key objective is to raise awareness of the complexity of this disease, the potential of prospective therapy strategies, and the need for early and comprehensive management.
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Saafan FA, Elsamanoudy AZ, Shaalan D, Zeidan N, Gaballah MA. MTHFR C677T Polymorphism and Serum Homocysteine Level as Risk Factors of Coronary Heart Disease in Patients with Androgenetic Alopecia: A Case Control Study. Am J Med Sci 2021; 362:375-380. [PMID: 34192512 DOI: 10.1016/j.amjms.2021.06.013] [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: 05/02/2020] [Revised: 10/21/2020] [Accepted: 06/08/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Androgenetic alopecia (AGA) is associated with a risk of coronary heart disease (CHD), although the causes underlying this association are not clear. Serum homocysteine (SH) is a known risk factor for CHD, and methylene tetrahydrofolate reductase enzyme (MTHFR) plays a crucial role in the remethylation of homocysteine to methionine. The polymorphism C677T that affects the catalytic domain of the MTHFR protein leads to a high levels of SH. Our hypothesis was that this polymorphism and SH level are risk factors for CHD in Patients with AGA. METHODS A total of 106 patients with AGA and 100 well-matched healthy controls were enrolled in the study. SH levels were estimated. DNA was extracted and polymerase chain reaction amplification, followed by restriction enzyme digestion for MTHFR (C677T) gene, was conducted. RESULTS SH levels were significantly higher in the patient group and highest in those with the TT genotype. The mutant T allele was associated with hyperhomocysteinemia and an increased risk of CHD in patients with AGA. CONCLUSIONS AGA is associated with a higher risk of developing CHD due to the associated higher level of SH that, in turn, depends on and is correlated with mutant MTHFR genotypes. Cardiac evaluation and follow-up of patients with AGA is recommended for early detection and treatment of CHD to avoid an overall detrimental course.
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Affiliation(s)
- Fawzia A Saafan
- Department of Dermatology, Andrology and STDs, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Ayman Z Elsamanoudy
- Department of Medical Biochemistry and Molecular Biology Department Faculty of Medicine, Mansoura University, Mansoura, Egypt; Department of Clinical Biochemistry Department, Faculty of Medicine, King Abdulaziz University, Saudi Arabia
| | - Dalia Shaalan
- Department of Medical Biochemistry and Molecular Biology Department Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Nanees Zeidan
- Department of Dermatology, Andrology and STDs, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Mohammad A Gaballah
- Department of Dermatology, Andrology and STDs, Faculty of Medicine, Mansoura University, Mansoura, Egypt.
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Verma D, Hussain K, Namiq KS, Firoz A, Bouchama M, Raza M, Haris M, Khan S. Vitiligo: The Association With Metabolic Syndrome and the Role of Simvastatin as an Immunomodulator. Cureus 2021; 13:e14029. [PMID: 33898117 PMCID: PMC8059484 DOI: 10.7759/cureus.14029] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 03/21/2021] [Indexed: 12/17/2022] Open
Abstract
Vitiligo is an autoimmune condition primarily affecting the skin where there is destruction of melanocytes characterized by pinkish-white patches on the skin. It is associated with other autoimmune diseases such as thyroid disease, rheumatoid arthritis, diabetes mellitus, and metabolic syndrome. Metabolic syndrome is a constellation of disorders including insulin resistance, hypertension, dyslipidemia, and obesity, and is considered a leading cause of cardiovascular morbidity. Simvastatin is a potent hypolipidemic drug that also possesses immunomodulating properties and is a common drug used in dyslipidemia and cardiovascular diseases. This study aimed to assess the association between vitiligo and metabolic syndrome and explore the immunomodulating properties of simvastatin for use in vitiligo. We reviewed various articles from PubMed, ResearchGate, and Google Scholar using different keywords and Medical Subject Headings and finalized 33 studies to be used in our review. The articles selected showed a positive association between vitiligo and metabolic syndrome or one of the component diseases of metabolic syndrome. The benefits of using simvastatin were also addressed by few articles attributing to its antioxidant and immunomodulating effect. However, there was no concrete explanation justifying the association between vitiligo and metabolic syndrome due to a limited number of studies and smaller sample size. Large-scale clinical trials should be conducted to evaluate the use of simvastatin as an immunomodulator in vitiligo to prevent possible metabolic complications.
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Affiliation(s)
- Deepak Verma
- Internal Medicine/Family Medicine, California Institute of Behavioral Neurosciences & Psychology, Fairfield, USA
| | - Khadija Hussain
- Radiology, California Institute of Behavioral Neurosciences & Psychology, Fairfield, USA
| | - Karez S Namiq
- Oncology, California Institute of Behavioral Neurosciences & Psychology, Fairfield, USA
| | - Amena Firoz
- Pediatrics, California Institute of Behavioral Neurosciences & Psychology, Fairfield, USA
| | - Manel Bouchama
- Internal Medicine, California Institute of Behavioral Neurosciences & Psychology, Fairfield, USA
| | - Maham Raza
- Internal Medicine, California Institute of Behavioral Neurosciences & Psychology, Fairfield, USA
| | - Muhammad Haris
- Internal Medicine, Royal Lancaster Infirmary, Lancaster, GBR
- Internal Medicine, California Institute of Behavioral Neurosciences & Psychology, Fairfield, USA
| | - Safeera Khan
- Internal Medicine, California Institute of Behavioral Neurosciences & Psychology, Fairfield, USA
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Jadeja SD, Mayatra JM, Vaishnav J, Shukla N, Begum R. A Concise Review on the Role of Endoplasmic Reticulum Stress in the Development of Autoimmunity in Vitiligo Pathogenesis. Front Immunol 2021; 11:624566. [PMID: 33613564 PMCID: PMC7890234 DOI: 10.3389/fimmu.2020.624566] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Accepted: 12/22/2020] [Indexed: 12/13/2022] Open
Abstract
Vitiligo is characterized by circumscribed depigmented macules in the skin resulting due to the autoimmune destruction of melanocytes from the epidermis. Both humoral as well as cell-mediated autoimmune responses are involved in melanocyte destruction. Several studies including ours have established that oxidative stress is involved in vitiligo onset, while autoimmunity contributes to the disease progression. However, the underlying mechanism involved in programing the onset and progression of the disease remains a conundrum. Based on several direct and indirect evidences, we suggested that endoplasmic reticulum (ER) stress might act as a connecting link between oxidative stress and autoimmunity in vitiligo pathogenesis. Oxidative stress disrupts cellular redox potential that extends to the ER causing the accumulation of misfolded proteins, which activates the unfolded protein response (UPR). The primary aim of UPR is to resolve the stress and restore cellular homeostasis for cell survival. Growing evidences suggest a vital role of UPR in immune regulation. Moreover, defective UPR has been implicated in the development of autoimmunity in several autoimmune disorders. ER stress-activated UPR plays an essential role in the regulation and maintenance of innate as well as adaptive immunity, and a defective UPR may result in systemic/tissue level/organ-specific autoimmunity. This review emphasizes on understanding the role of ER stress-induced UPR in the development of systemic and tissue level autoimmunity in vitiligo pathogenesis and its therapeutics.
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Affiliation(s)
| | | | | | | | - Rasheedunnisa Begum
- Department of Biochemistry, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara, India
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14
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Abstract
Urinary metabolomics is a useful non-invasive tool for large-scale screening of disease-related metabolites. However, no comprehensive urinary metabolomic analysis of vitiligo is presently available. To investigate the urine metabolic pattern of vitiligo patients, we conducted a combined cross-sectional and prospective self-control cohort study and an untargeted urinary metabolomic analysis. In the cross-sectional study, 295 vitiligo patients and 192 age‐ and sex‐matched controls were enrolled, and 71 differential metabolites between two groups were identified. Pathway enrichment analysis revealed that drug metabolism-cytochrome P450, biopterin metabolism, vitamin B9 (folate) metabolism, selenoamino acid metabolism, and methionine and cysteine metabolism showed significant enrichment in vitiligo patients compared with the status in healthy controls. In the self-control cohort, 46 active vitiligo patients were recruited to analyse the urinary metabolic signatures after treatment. All of these patients were asked to undertake follow-up visits every 2 months three times after first consulting and the disease stage was evaluated compared with that at the last visit. Folate metabolism, linoleate metabolism, leukotriene metabolism, alkaloid biosynthesis, and tyrosine metabolism were predicted to be involved in vitiligo activity. Our study is the first attempt to reveal urinary metabolic signatures of vitiligo patients and provides new insights into the metabolic mechanisms of vitiligo.
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15
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Homocysteine induces melanocytes apoptosis via PERK-eIF2α-CHOP pathway in vitiligo. Clin Sci (Lond) 2020; 134:1127-1141. [PMID: 32400851 DOI: 10.1042/cs20200218] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 05/03/2020] [Accepted: 05/13/2020] [Indexed: 12/20/2022]
Abstract
Vitiligo is a depigmentation disorder that develops as a result of the progressive disappearance of epidermal melanocytes. The elevated level of amino acid metabolite homocysteine (Hcy) has been identified as circulating marker of oxidative stress and known as a risk factor for vitiligo. However, the mechanism underlying Hcy-regulated melanocytic destruction is currently unknown. The present study aims to elucidate the effect of Hcy on melanocytic destruction and its involvement in the pathogenesis of vitiligo. Our results showed that Hcy level was significantly elevated in the serum of progressive vitiligo patients. Notably, Hcy induced cell apoptosis in melanocytes via activating reactive oxygen species (ROS) and endoplasmic reticulum (ER) stress protein kinase RNA-like ER kinase (PERK)-eukaryotic translation initiation factor 2α (eIF2α)-C/EBP homologous protein (CHOP) pathway. More importantly, folic acid, functioning in the transformation of Hcy, could lower the intracellular Hcy level and further reverse the apoptotic effect of Hcy on melanocytes. Additionally, Hcy disrupted melanogenesis whereas folic acid supplementation could reverse the melanogenesis defect induced by Hcy in melanocytes. Taken together, Hcy is highly increased in vitiligo patients at progressive stage, and our in vitro studies revealed that folic acid could protect melanocytes from Hcy-induced apoptosis and melanin synthesis inhibition, indicating folic acid as a potential benefit agent for patients with progressive vitiligo.
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16
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Rehman T, Shabbir MA, Inam‐Ur‐Raheem M, Manzoor MF, Ahmad N, Liu Z, Ahmad MH, Siddeeg A, Abid M, Aadil RM. Cysteine and homocysteine as biomarker of various diseases. Food Sci Nutr 2020; 8:4696-4707. [PMID: 32994931 PMCID: PMC7500767 DOI: 10.1002/fsn3.1818] [Citation(s) in RCA: 102] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 07/03/2020] [Accepted: 07/18/2020] [Indexed: 12/16/2022] Open
Abstract
Cysteine and homocysteine (Hcy), both sulfur-containing amino acids (AAs), produced from methionine another sulfur-containing amino acid, which is converted to Hcy and further converted to cysteine. This article aims to highlight the link between cysteine and Hcy, and their mechanisms, important functions, play in the body and their role as a biomarker for various types of diseases. So that using cysteine and Hcy as a biomarker, we can prevent and diagnose many diseases. This review concluded that hyperhomocysteinemia (elevated levels of homocysteine) is considered as toxic for cells and is associated with different health problems. Hyperhomocysteinemia and low levels of cysteine associated with various diseases like cardiovascular diseases (CVD), ischemic stroke, neurological disorders, diabetes, cancer like lung and colorectal cancer, renal dysfunction-linked conditions, and vitiligo.
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Affiliation(s)
- Tahniat Rehman
- National Institute of Food Science and TechnologyUniversity of AgricultureFaisalabadPakistan
| | - Muhammad Asim Shabbir
- National Institute of Food Science and TechnologyUniversity of AgricultureFaisalabadPakistan
| | - Muhammad Inam‐Ur‐Raheem
- National Institute of Food Science and TechnologyUniversity of AgricultureFaisalabadPakistan
| | | | - Nazir Ahmad
- Institute of Home and Food SciencesGovernment College UniversityFaisalabadPakistan
| | - Zhi‐Wei Liu
- College of Food Science and TechnologyHunan Agricultural UniversityChangshaChina
| | | | - Azhari Siddeeg
- Department of Food Engineering and TechnologyFaculty of Engineering and TechnologyUniversity GeziraWad MedaniSudan
| | - Muhammad Abid
- Institute of Food and Nutritional SciencesPir Mehr Ali Shah Arid Agriculture UniversityRawalpindiPakistan
| | - Rana Muhammad Aadil
- National Institute of Food Science and TechnologyUniversity of AgricultureFaisalabadPakistan
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17
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Bagheri Hamidi A, Namazi N, Mohammad Amoli M, Amani M, Gholami M, Youssefian L, Vahidnezhad H, Abdollahimajd F, Uitto J. Association of MTHFR C677T polymorphism with elevated homocysteine level and disease development in vitiligo. Int J Immunogenet 2020; 47:342-350. [PMID: 32064757 DOI: 10.1111/iji.12476] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Revised: 01/07/2020] [Accepted: 01/10/2020] [Indexed: 12/12/2022]
Abstract
Increasing evidence on the association of MTHFR gene polymorphism and serum homocysteine levels with autoimmune diseases such as vitiligo has made the MTHFR gene a very interesting candidate to be evaluated in different ethnicities and populations. We aimed to evaluate the levels of serum homocysteine and vitamin B12 and their associations with MTHFR C677T polymorphism in the Iranian population. This case-control study included 104 patients with vitiligo and 100 age- and sex-matched healthy control subjects. Serum vitamin B12 and homocysteine levels were measured by a chemiluminescence assay. Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) analysis was used for genotyping the polymorphism. The mean serum homocysteine levels were significantly higher in cases than controls and associated with disease activity (p < .001). Furthermore, the homozygous MTHFR C677T variant genotype was associated with vitiligo development (adjusted OR: 3.52, 95% CI: 1.09-11.32, p = .02) and elevated homocysteine level (p < .001). There was no association between serum vitamin B12 levels and the MTHFR C677T genotype. The homozygous variant MTHFR C677T may be considered as a risk factor for both elevated homocysteine levels and the development of vitiligo in the Iranian population. Although these results are not conclusive, they could elucidate the contribution of genetic and immune-mediated inflammatory factors to the pathogenesis of vitiligo.
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Affiliation(s)
- Arash Bagheri Hamidi
- Skin Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Nastaran Namazi
- Skin Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mahsa Mohammad Amoli
- Endocrinology and Metabolism Research Institute (EMRI), Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Maliheh Amani
- Skin Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Morteza Gholami
- Endocrinology and Metabolism Research Institute (EMRI), Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Leila Youssefian
- Genetics, Genomics and Cancer Biology PhD Program, Thomas Jefferson University, Philadelphia, PA, USA.,Department of Dermatology and Cutaneous Biology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA.,Jefferson Institute of Molecular Medicine, Thomas Jefferson University, Philadelphia, PA, USA
| | - Hassan Vahidnezhad
- Department of Dermatology and Cutaneous Biology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA.,Jefferson Institute of Molecular Medicine, Thomas Jefferson University, Philadelphia, PA, USA
| | - Fahimeh Abdollahimajd
- Skin Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Clinical Research Development Unit, Shohada-e Tajrish Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Jouni Uitto
- Department of Dermatology and Cutaneous Biology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA.,Jefferson Institute of Molecular Medicine, Thomas Jefferson University, Philadelphia, PA, USA
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