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Cassiano DP, Espósito ACC, da Silva CN, Lima PB, Dias JAF, Hassun K, Miot LDB, Miot HA, Bagatin E. Update on Melasma-Part II: Treatment. Dermatol Ther (Heidelb) 2022; 12:1989-2012. [PMID: 35906506 PMCID: PMC9464276 DOI: 10.1007/s13555-022-00780-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 07/13/2022] [Indexed: 01/10/2023] Open
Abstract
Melasma is a prevalent chronic relapsing pigmentary disorder that affects photoexposed areas, especially in women of childbearing age. Although there is currently no curative treatment available for melasma, this manuscript critically reviews the knowledge regarding photoprotection, topical and oral therapies, and procedures such as peelings, laser, and microneedling that represent the main strategies for control and prevention of this disease. As the pathogenesis of melasma is not entirely understood, there are prospects for the development of new therapeutic strategies that might act on the pathways that promote sustained pigmentation rather than merely decreasing melanin synthesis and removing melanin from the epidermis.
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Affiliation(s)
| | - Ana Cláudia C. Espósito
- Departamento de Dermatologia e Radioterapia, FMB-Unesp, Campus de Rubião Jr., Botucatu, SP Brazil
| | - Carolina N. da Silva
- Departamento de Dermatologia e Radioterapia, FMB-Unesp, Campus de Rubião Jr., Botucatu, SP Brazil
| | - Paula B. Lima
- Departamento de Dermatologia e Radioterapia, FMB-Unesp, Campus de Rubião Jr., Botucatu, SP Brazil
| | - Joana A. F. Dias
- Departamento de Dermatologia, UNIFESP, São Paulo, SP Brazil
- Departamento de Dermatologia e Radioterapia, FMB-Unesp, Campus de Rubião Jr., Botucatu, SP Brazil
| | - Karime Hassun
- Departamento de Dermatologia, UNIFESP, São Paulo, SP Brazil
| | - Luciane D. B. Miot
- Departamento de Dermatologia, UNIFESP, São Paulo, SP Brazil
- Departamento de Dermatologia e Radioterapia, FMB-Unesp, Campus de Rubião Jr., Botucatu, SP Brazil
| | - Hélio A. Miot
- Departamento de Dermatologia e Radioterapia, FMB-Unesp, Campus de Rubião Jr., Botucatu, SP Brazil
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Cassiano DP, Espósito ACC, Hassun KM, Lima MMDDA, Lima EVDA, Miot LDB, Miot HA, Bagatin E. Histological changes in facial melasma after treatment with triple combination cream with or without oral tranexamic acid and/or microneedling, a randomised clinical trial. Indian J Dermatol Venereol Leprol 2022; 88:761-770. [PMID: 35389028 DOI: 10.25259/ijdvl_126_2021] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 09/01/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND Melasma is an acquired dyschromia with several histologic alterations in the epidermis, basement membrane and upper dermis. The treatment of melasma is challenging due to the irregular response and chronicity of the disease. To date, there are no curative strategies, largely due to the limited understanding of the intrinsic effects of each treatment. OBJECTIVES The objective of the study was to evaluate the histological changes promoted by triple combination cream, with or without complementary treatment with microneedling and oral tranexamic acid, in the treatment of melasma. METHODS A factorial, randomised, controlled and evaluator-blinded clinical trial was performed involving 64 women with facial melasma, divided in four groups, who underwent 60 days of treatment with triple combination cream alone (control group) or combined with two monthly microneedling sessions (microneedling group), TA 250 mg twice daily (tranexamic acid group), or both tranexamic acid group and microneedling group. The participants underwent biopsy of the area with melasma at inclusion (D1) and D60. The primary outcomes were the variation (D1 × D60) between the variables: Thickness of the epidermis and stratum corneum, stratum corneum compaction and solar elastosis; melanin density in the epidermis and upper dermis; proportion between the extension of the nonintact and intact basement membrane zone; mast cell count in the upper dermis; melanocyte count in the basal layer, pendulum melanocyte count and melanocyte area; immunostaining density of vascular endothelial growth factor; stem cell factor and keratinocyte growth factor. RESULTS One participant in the TG discontinued tranexamic acid due persistent headache; and herpes simplex occurred in three patients after microneedling. The groups showed a 24% (CI95%: 17-35%; P < 0.01) reduction in epidermal melanin density. There was no change in dermal melanin density or the area of melanocytes after treatment. There was an overall 25% (CI95%: 7-42%; P < 0.01) reduction in the number of pendulum melanocytes, especially in the microneedling and tranexamic acid group, that presented a 41% (CI95%: 7-73%; P < 0.01) reduction. The extension of the nonintact basal membrane relative to the intact basal membrane decreased after treatment, especially in microneedling group and microneedling and tranexamic acid group. There was an increase of 13% (CI95%: 5-21%; P = 0.02) in epidermal thickness and 6% (CI95%: 0-22%; P = 0.04) thinning of the stratum corneum in the groups. All groups showed stratum corneum compaction. Solar elastosis improved only in the microneedling group and microneedling and tranexamic acid group. Vascular endothelial growth factor immunostaining increased 14% (CI95%: 4-24%; P = 0.03) in the groups; and stem cell factor increased only in microneedling group. There was no change in the number of mast cells, CD34 and keratinocyte growth factor immunostaining. LIMITATIONS The site of biopsy may not represent all of the facial melasma and the immunohistochemical sensitivity of the cytokines does not have a stoichiometric relationship with proteins. CONCLUSION A greater thickness of the epidermis is associated with melasma bleaching. Dermal melanin seems to have no impact on melasma prognosis. Damage to the skin barrier and stimulus of angiogenesis should be avoided in the treatment of melasma. Microneedling complements the topical treatment of melasma by improving patterns of skin photoaging. Oral tranexamic acid complements the topical treatment of melasma by inhibiting the stem cell factor.
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Affiliation(s)
| | | | | | | | | | | | - Hélio Amante Miot
- Departamento de Dermatologia e Radioterapia, Botucatu, São Paulo, Brazil
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Artzi O, Horovitz T, Bar-Ilan E, Shehadeh W, Koren A, Zusmanovitch L, Mehrabi JN, Salameh F, Isman Nelkenbaum G, Zur E, Sprecher E, Mashiah J. The pathogenesis of melasma and implications for treatment. J Cosmet Dermatol 2021; 20:3432-3445. [PMID: 34411403 DOI: 10.1111/jocd.14382] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 06/28/2021] [Accepted: 07/28/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Melasma is a complex and poorly understood disorder, with high rates of treatment failure and recurrences. OBJECTIVES We aimed to review the current knowledge of the pathogenesis of melasma and apply this knowledge to clinical implications on relevant therapeutic interventions. METHODS A systematic PubMed search was performed using the search term "((melasma[Text Word]) OR facial melanosis[Text Word]) AND (pathogenesis OR causality[MeSH Terms])" for articles published between 1990 and 2020. Included articles were then evaluated by two authors and assessed for relevant pathomechanistic pathways, after which they were divided into groups with minimal overlap. We then reviewed current treatment modalities for melasma and divided them according to the involved pathomechanistic pathway. RESULTS A total of 309 search results were retrieved among which 76 relevant articles were identified and reviewed. Five main pathomechanisms observed in melasma were identified: (1) melanocyte inappropriate activation; (2) aggregation of melanin and melanosomes in dermis and epidermis; (3a) increased mast cell count and (3b) solar elastosis; (4) altered basement membrane; and (5) increased vascularization. Treatment modalities were then divided based on these five pathways and detailed in 6 relevant tables. CONCLUSION The pathophysiology of melasma is multifactorial, resulting in treatment resistance and high recurrence rates. This wide variety of pathomechanisms should ideally be addressed separately in the treatment regimen in order to maximize results.
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Affiliation(s)
- Ofir Artzi
- Division of Dermatology and Venereology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Tamir Horovitz
- Division of Dermatology and Venereology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Efrat Bar-Ilan
- Division of Dermatology and Venereology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Waseem Shehadeh
- Division of Dermatology and Venereology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Amir Koren
- Division of Dermatology and Venereology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Lior Zusmanovitch
- Division of Dermatology and Venereology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Joseph N Mehrabi
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Fares Salameh
- Division of Dermatology and Venereology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Gila Isman Nelkenbaum
- Division of Dermatology and Venereology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Eyal Zur
- Compounding Solutions, a Pharmaceutical Consultancy Company, Tel-Mond, Israel
| | - Eli Sprecher
- Division of Dermatology and Venereology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Jacob Mashiah
- Division of Dermatology and Venereology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Pediatric Dermatology Unit, Dana Children's Hospital, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
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4
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Searle T, Al-Niaimi F, Ali FR. Hydroquinone: myths and reality. Clin Exp Dermatol 2020; 46:636-640. [PMID: 33159818 DOI: 10.1111/ced.14480] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 09/21/2020] [Accepted: 09/26/2020] [Indexed: 11/28/2022]
Abstract
Hydroquinone has pharmacological uses in disorders of pigmentation because of its ability to competitively inhibit the enzyme tyrosinase. Our contemporary review presents the strongest evidence supporting the use of hydroquinone with the most effective and tolerable formulations combining hydroquinone, retinoid and corticosteroid (modified Kligman formula or 'triple combination cream'). The risk of exogenous ochronosis is low if prescribed concentrations of ≤ 5 for a limited period with regular monitoring. Dermatologists should reassure patients that with controlled use, hydroquinone can be well-tolerated and safe for a range of hyperpigmentary conditions.
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Affiliation(s)
- T Searle
- University of Birmingham Medical School, Birmingham, UK
| | - F Al-Niaimi
- Department of Dermatology, Aalborg University Hospital, Aalborg, Denmark
| | - F R Ali
- St John's Institute of Dermatology, Guy's and St Thomas' NHS Foundation Trust, London, UK.,Vernova Healthcare CIC, Macclesfield, UK
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Lima P, Dias J, Esposito A, Miot L, Miot H. French maritime pine bark extract (pycnogenol) in association with triple combination cream for the treatment of facial melasma in women: a double‐blind, randomized, placebo‐controlled trial. J Eur Acad Dermatol Venereol 2020; 35:502-508. [DOI: 10.1111/jdv.16896] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 08/13/2020] [Indexed: 12/31/2022]
Affiliation(s)
- P.B. Lima
- Departamento de Dermatologia e Radioterapia FMB‐Unesp Botucatu Brazil
| | - J.A.F. Dias
- Departamento de Dermatologia e Radioterapia FMB‐Unesp Botucatu Brazil
| | - A.C.C. Esposito
- Departamento de Dermatologia e Radioterapia FMB‐Unesp Botucatu Brazil
| | - L.D.B. Miot
- Departamento de Dermatologia e Radioterapia FMB‐Unesp Botucatu Brazil
| | - H.A. Miot
- Departamento de Dermatologia e Radioterapia FMB‐Unesp Botucatu Brazil
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6
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Vallini V, Rinaldi E, Mangano L, Modesti L, Ghelardini P, Roberts AT, Grazi G. Multiple subcutaneous haematomas of the legs causing skin necrosis in an elderly patient affected by corticosteroid-induced skin atrophy: Case report and review of literature. Int Wound J 2020; 17:540-546. [PMID: 31972900 DOI: 10.1111/iwj.13312] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 03/16/2018] [Indexed: 12/19/2022] Open
Abstract
Corticosteroid-induced skin atrophy (CISA) consists of a thinning of the skin and subcutaneous tissues, representing the natural consequence of a prolonged glucocorticosteroids use, both systemic as well as topical. It is characterised by the loss of elasticity and skin thickness, associated with an increased skin fragility leading to ecchymoses, haematomas, and steroid purpura. The management of CISA is a challenge for physicians, as the pathology is reversible in a minimal percentage of cases and only after a short topical steroid or low-dose course therapy. Often wounds with large loss of substance represent the more common complication, after a surgical drainage which is often necessary. Skin necrosis with compartment syndrome of a leg is another potential risk for these patients. Here, we report a case of an elderly patient affected by multiple subcutaneous haematomas of the legs causing skin necrosis, arisen after the use of anticoagulants for a deep venous thrombosis. The patient was successfully treated with surgical drainage, negative pressure wound therapy (NPWT), and porcine xenograft with no complications. Finally, we discuss the evidence of the current literature on topic.
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Affiliation(s)
- Valerio Vallini
- Azienda USL Toscana nord ovest, U.O. Medicina Interna, Ospedale Santa Maria Maddalena, Pisa, Italy
| | - Elisabetta Rinaldi
- Azienda USL Toscana nord ovest, U.O. Medicina Interna, Ospedale Santa Maria Maddalena, Pisa, Italy
| | - Luciana Mangano
- Azienda USL Toscana nord ovest, U.O. Medicina Interna, Ospedale Santa Maria Maddalena, Pisa, Italy
| | - Luca Modesti
- Azienda USL Toscana nord ovest, U.O. Ortopedia, Ospedale Felice Lotti, Pisa, Italy
| | - Piero Ghelardini
- Azienda USL Toscana nord ovest, U.O. Medicina Interna, Ospedale Santa Maria Maddalena, Pisa, Italy
| | - Anna Theresa Roberts
- Azienda USL Toscana nord ovest, U.O. Medicina Interna, Ospedale Santa Maria Maddalena, Pisa, Italy
| | - Giovanni Grazi
- Azienda USL Toscana nord ovest, U.O. Medicina Interna, Ospedale Santa Maria Maddalena, Pisa, Italy
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7
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Dong S, Ding LG, Cao JF, Liu X, Xu HY, Meng KF, Yu YY, Wang Q, Xu Z. Viral-Infected Change of the Digestive Tract Microbiota Associated With Mucosal Immunity in Teleost Fish. Front Immunol 2019; 10:2878. [PMID: 31921142 PMCID: PMC6930168 DOI: 10.3389/fimmu.2019.02878] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 11/25/2019] [Indexed: 12/24/2022] Open
Abstract
The digestive tract is a unique series of organs that is inhabited by a range of commensal microbes while also exposed to an overwhelming load of dietary antigens. It is widely known that mammals have evolved complex and efficient immune strategies to protect the mucosa of the digestive tract. However, in the early vertebrates, the roles of mucosal immune defense and microbial communities in the different segments of the digestive tract are not well-understood. Here, we constructed a bath infection model with infectious hematopoietic necrosis virus (IHNV) in rainbow trout (Oncorhynchus mykiss). Importantly, following viral infection, we found that the IHNV distribution and the reactions of immune-related genes had similar trends that decreased across the digestive tract. Hematoxylin and eosin (H & E) and alcian blue (A & B) staining of the trout digestive tract showed that the pathological changes only occurred in the buccal and pharyngeal mucosal tissues. Moreover, the increased diversity of the microbial community was only detected in the buccal mucosa through 16S rRNA gene sequencing, suggesting that the magnitude of the immune response and microbial community changes are related to the IHNV load and the original microbial diversity. In addition, the loss of digestive tract dominant species and increased colonization of opportunistic bacteria were discovered in the buccal mucosal surface indicating that a secondary bacterial infection occurred in this mucosal tissue.
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Affiliation(s)
- Shuai Dong
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, China
| | - Li-guo Ding
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, China
| | - Jia-feng Cao
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, China
| | - Xia Liu
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, China
| | - Hao-yue Xu
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, China
| | - Kai-feng Meng
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, China
| | - Yong-yao Yu
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, China
| | - Qingchao Wang
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, China
| | - Zhen Xu
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
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8
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Ahmad Nasrollahi S, Sabet Nematzadeh M, Samadi A, Ayatollahi A, Yadangi S, Abels C, Firooz A. Evaluation of the safety and efficacy of a triple combination cream (hydroquinone, tretinoin, and fluocinolone) for treatment of melasma in Middle Eastern skin. Clin Cosmet Investig Dermatol 2019; 12:437-444. [PMID: 31354327 PMCID: PMC6580938 DOI: 10.2147/ccid.s202285] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Accepted: 05/01/2019] [Indexed: 12/04/2022]
Abstract
Background: Melasma is the most common pigmentary skin disorder, especially in females and those with darker complexion. The current study evaluated the safety and efficacy of a triple combination cream containing hydroquinone 4%+tretinoin 0.05%+fluocinolone acetonide 0.01% (Januluma® cream produced by Janus Pharmaceutical Co, Tehran, Iran) in the treatment of melasma. Patients and methods: Twenty-two female volunteers (mean±standard deviation of age: 39.20±4.16 years) who fulfilled the eligibility criteria participated in this study after signing the informed consent. They were requested to apply the Januluma®cream every night for 8 weeks. Modified melasma area and severity index (mMASI), skin lightness (L value), and severity of pigmentation (E value) by Visio Face, and skin biophysical parameters including pH, melanin index, erythema index, sebum, hydration, trans epidermal water loss, thickness and density of epidermis, and dermis (using 22 MHz ultrasonography) were measured before and 4 and 8 weeks after treatment. Also patients’ satisfaction was assessed 4 and 8 weeks after treatment using visual analog score. Results: mMASI decreased significantly from 3.37 to 2.60 at week 4, and to 2.40 at week 8 (P-values=0.00 and 0.01, respectively). Also, E and L values improved significantly after 8 weeks of treatment (P=0.01 and 0.00, respectively). Skin melanin index decreased from 237.49 AU to 196.30 AU at week 8 (P=0.01). Also echo density of dermis increased significantly after 8 weeks of treatment (P=0.029). Almost all participants experienced some degrees of pruritus, scaling, and erythema, esspecially during the first month of application, which were generally mild and tolerable. The mean satisfaction of patients with the treatment was 6.77. Conclusion: The triple combination formula was reasonably safe and effective for treatment of melasma in Middle Eastern patients.
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Affiliation(s)
- Saman Ahmad Nasrollahi
- Center for Research & Training in Skin Diseases & Leprosy, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Aniseh Samadi
- Center for Research & Training in Skin Diseases & Leprosy, Tehran University of Medical Sciences, Tehran, Iran
| | - Azin Ayatollahi
- Center for Research & Training in Skin Diseases & Leprosy, Tehran University of Medical Sciences, Tehran, Iran
| | - Somayeh Yadangi
- Center for Research & Training in Skin Diseases & Leprosy, Tehran University of Medical Sciences, Tehran, Iran
| | - Christoph Abels
- Dr. August Wolff GmbH & Co. KG Arzneimittel , Bielefeld, Germany
| | - Alireza Firooz
- Center for Research & Training in Skin Diseases & Leprosy, Tehran University of Medical Sciences, Tehran, Iran
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9
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Luo Y, Yu W, Yu Y, Dong S, Yin Y, Huang Z, Wan X, Zhang L, Yu Y, Ai T, Wang Q, Xu Z. Molecular characterization and expression analysis of T cell receptor (TCR) γ and δ genes in dojo loach (Misgurnus anguillicaudatus) in response to bacterial, parasitic and fungal challenge. FISH & SHELLFISH IMMUNOLOGY 2019; 86:641-652. [PMID: 30485793 DOI: 10.1016/j.fsi.2018.11.045] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 11/11/2018] [Accepted: 11/16/2018] [Indexed: 06/09/2023]
Abstract
In mammalian, T-cell receptors (TCRs) play a key role in recognizing the presented antigen from external to protect organisms against environmental pathogens. To understand the potential roles of TCRγ and TCRδ in dojo loach (Misgurnus anguillicaudatus), Ma-TCRγ and Ma-TCRδ cDNAs were cloned and their gene expression profiles were investigated after bacterial, parasitic and fungal challenge. The open reading frame (ORF) of Ma-TCRγ and Ma-TCRδ cDNAs contained 948 and 867 bp, encoding 316 and 288 amino acid residues, respectively. Structurally, Ma-TCRγ and Ma-TCRδ were consisted of a signal peptide, a variable region, a constant region (IgC), a connecting peptide (CPS), a transmembrane region (TM) and a cytoplasmic domain (CYT), which were similar to those of other vertebrates. Multiple sequence alignment and phylogenetic analysis showed Ma-TCRγ and Ma-TCRδ were closely related to fish of Cyprinidae family. Ma-TCRγ and Ma-TCRδ were widely expressed in all tested organs/tissues, as the highest expressions of Ma-TCRγ and Ma-TCRδ were detected in kidney and gill, respectively. In addition, three infection models of dojo loach with bacteria (F. columnare G4), parasite (Ichthyophthirius multifiliis) and fungus (Saprolegnia sp.) were constructed. The morphological changes of gills and skin after challenged with F. columnare G4 and Ichthyophthirius multifiliis were investigated. Compared to F. columnare G4 infection, mRNA expression of both TCRγ and TCRδ showed higher sensitivity in classical immune organs (kidney and spleen) and mucosal tissues (skin and gill) after challenge with Ichthyophthirius multifiliis and Saprolegnia sp. Our results first indicated that TCRγ and TCRδ of dojo loach might function differently in response to challenge with different pathogens.
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Affiliation(s)
- Yanzhi Luo
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Hubei Engineering Technology Research Center for Aquatic Animal Diseases Control and Prevention, Wuhan, Hubei, 430070, China
| | - Wei Yu
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Hubei Engineering Technology Research Center for Aquatic Animal Diseases Control and Prevention, Wuhan, Hubei, 430070, China
| | - Yongyao Yu
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Hubei Engineering Technology Research Center for Aquatic Animal Diseases Control and Prevention, Wuhan, Hubei, 430070, China
| | - Shuai Dong
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Hubei Engineering Technology Research Center for Aquatic Animal Diseases Control and Prevention, Wuhan, Hubei, 430070, China
| | - Yaxing Yin
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Hubei Engineering Technology Research Center for Aquatic Animal Diseases Control and Prevention, Wuhan, Hubei, 430070, China
| | - Zhenyu Huang
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Hubei Engineering Technology Research Center for Aquatic Animal Diseases Control and Prevention, Wuhan, Hubei, 430070, China
| | - Xinyu Wan
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Hubei Engineering Technology Research Center for Aquatic Animal Diseases Control and Prevention, Wuhan, Hubei, 430070, China
| | - Liqiang Zhang
- Wuhan Academy of Agricultural Sciences, Wuhan, Hubei, 430207, China
| | - Yunzhen Yu
- Wuhan Academy of Agricultural Sciences, Wuhan, Hubei, 430207, China
| | - Taoshan Ai
- Wuhan Academy of Agricultural Sciences, Wuhan, Hubei, 430207, China
| | - Qingchao Wang
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Hubei Engineering Technology Research Center for Aquatic Animal Diseases Control and Prevention, Wuhan, Hubei, 430070, China
| | - Zhen Xu
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Hubei Engineering Technology Research Center for Aquatic Animal Diseases Control and Prevention, Wuhan, Hubei, 430070, China; Collaborative Innovation Center for Efficient and Health Production of Fisheries in Hunan Province, Changde, 415000, China.
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10
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Yu Y, Liu Y, Li H, Dong S, Wang Q, Huang Z, Kong W, Zhang X, Xu Y, Chen X, Xu Z. Polymeric immunoglobulin receptor in dojo loach (Misgurnus anguillicaudatus): Molecular characterization and expression analysis in response to bacterial and parasitic challenge. FISH & SHELLFISH IMMUNOLOGY 2018; 73:175-184. [PMID: 29248629 DOI: 10.1016/j.fsi.2017.12.019] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 11/13/2017] [Accepted: 12/13/2017] [Indexed: 06/07/2023]
Abstract
The polymeric immunoglobulin receptor (pIgR) is an essential component of the mucosal immune system in jawed vertebrates including teleost fish, which mediate transepithelial transport of secretory immunoglobulins (sIgs) to protect organisms against environmental pathogens. In this study, we firstly cloned and identified the pIgR from dojo loach (Misgurnus anguillicaudatus). The full-length cDNA of Ma-pIgR was of 1145 bp, containing an open reading frame (ORF) of 1101 bp encoded a predicted protein of 336 amino acids. The structure of Ma-pIgR is comprised of a signal peptide, a transmembrane region, an intracellular region and an extracellular region with two Ig-like domains (ILDs), which are similar to their counterparts described in other teleosts. Multiple sequence alignment and phylogenetic analysis showed the dojo loach is closely related to the fish family Cyprinidae. The transcriptional level of Ma-pIgR was detected by quantitative real-time PCR (qRT-PCR) in different tissues and high expression was found in liver, skin, kidney, eye, fin and gills. Two infection models of the loach with bacteria (Aeromonas hydrophila) and parasite (Ichthyophthirius multifiliis) were constructed for the first time. Histological studies showed the goblet cells in skin significantly increased and the ratio of gill length to width also significantly changed after challenged with A.hydrophila. Both challenge experiments resulted in the significant up-regulated expression of Ma-pIgR not only in kidney and spleen, but also in skin and gills. Our results suggest that pIgR may play an important role in skin and gill mucosal immunity to protect the loach against bacteria and parasite.
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Affiliation(s)
- Yongyao Yu
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Yangzhou Liu
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Huili Li
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Shuai Dong
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Qingchao Wang
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Zhenyu Huang
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Weiguang Kong
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Xiaoting Zhang
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Yongshen Xu
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Xiaoyao Chen
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Zhen Xu
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China; Collaborative Innovation Center for Efficient and Health Production of Fisheries in Hunan Province, Changde, 415000, China.
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Xu Y, Yu Y, Zhang X, Huang Z, Li H, Dong S, Liu Y, Dong F, Xu Z. Molecular characterization and expression analysis of complement component 3 in dojo loach (Misgurnus anguillicaudatus). FISH & SHELLFISH IMMUNOLOGY 2018; 72:484-493. [PMID: 29155029 DOI: 10.1016/j.fsi.2017.11.022] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 11/06/2017] [Accepted: 11/10/2017] [Indexed: 06/07/2023]
Abstract
The complement component 3 (C3) is a central component of complement system. All three pathways converge at formation of C3 convertases and share the terminal pathways of membrane attack complex (MAC) formation. In this study, three isoforms of C3 were discovered in Misgurnus anguillicaudatus, named "C3-1", "C3-2" and "C3-3", respectively. The full-length of C3-1 cDNA sequence was firstly identified and analyzed from dojo loach (Misgurnus anguillicaudatus). The Ma-C3-1 cDNA sequence comprised of 4509 bp encoding 1454 amino acids with a putative signal peptide of 20 amino acid residues. The deduced amino acid sequence showed that Ma-C3-1 has conserved residues and domain, which are known to be crucial for C3 function. Interestingly, an amino acid substitution of the highly conserved GCGEQ was discovered in Ma-C3-1. Phylogenetic analysis showed that Ma-C3-1 was closely related to Cyprinidae. The mRNA expression levels of three isoforms of C3 were detected in kidney, eye, spleen, gonad, heart, fin ray, gut, muscle, brain, gill, skin, blood and liver. The expression of Ma-C3-1 and Ma-C3-3 were mainly detected in liver, followed by spleen, gonad. However, the high expression of Ma-C3-2 was found in kidney, followed by blood and gonad. The morphological changes of gill and skin, and the expression pattern of these three isoforms C3 molecular following the infection with Aeromonas hydrophila were investigated. The mRNA expression levels of three C3 isoforms were up-regulated in the gill, skin, liver and spleen after infection with A.hydrophila. Similarly, challenge experiments resulted in significant up-regulated expression of other complement-relevant genes in gill, liver and skin, such as C4, C5, C8b, especially at 24 h and 36 h. These results suggest that complement system might play an important role not only in liver, but also in the mucosal tissues as gill and skin of teleost fish.
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Affiliation(s)
- Yongsheng Xu
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Yongyao Yu
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Xiaoting Zhang
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Zhenyu Huang
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Huili Li
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Shuai Dong
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Yangzhou Liu
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Fen Dong
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Zhen Xu
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China; Collaborative Innovation Center for Efficient and Health Production of Fisheries in Hunan Province, Changde, 415000, China.
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12
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Lima EVA, Lima MMDA, Paixão MP, Miot HA. Assessment of the effects of skin microneedling as adjuvant therapy for facial melasma: a pilot study. BMC DERMATOLOGY 2017; 17:14. [PMID: 29183309 PMCID: PMC5706369 DOI: 10.1186/s12895-017-0066-5] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Accepted: 11/21/2017] [Indexed: 01/09/2023]
Abstract
BACKGROUND Melasma is a common chronic and relapsing acquired dyschromia. Skin microneedling was reported resulting sustained long-term improvement of recalcitrant melasma, however, the exact mechanism that promotes this skin lightening is not known. This study aimed to investigate clinical and histologic alterations promoted by skin microneedling in facial melasma. METHODS Open pilot trial including six women with facial refractory melasma submitted to two sessions of microneedling (1.5 mm) each 30 days followed by daily triple combination and broad-spectrum sunscreen. Comparison of pretreatment (T0) and 15 days after last microneedling procedure (T45) was made by standardized pictures, skin colorimetry, MASI, MELASQoL and histological parameters (haematoxylin-eosin, picrosirius-red, periodic acid Schiff and Fontana-Masson staining). RESULTS The age of the subjects varied from 34 to 46 years-old, the phototypes were III and IV (Fitzpatrick), and age of melasma onset was 20 to 38 years. Improvement of melasma was perceived in all subjects. There was a significant reduction of MASI score (-70%), MELASQoL (-55%) and increase in L* (+13%) colorimetric value (p < 0.03). All cases evidenced epithelium thickening, decrease in melanin pigmentation and densification of upper dermis collagen (p = 0.03). Patients were followed by 6 months under broad-spectrum sunscreen and triple combination without relapse. CONCLUSION In addition to classic treatment (broad-spectrum sunscreen and triple combination), skin microneedling promoted clinical and histological improvement of refractory facial melasma.
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Affiliation(s)
- Emerson V A Lima
- Santa Casa de Misericórdia, Praça Fleming, 35/1201 Jaqueira, Recife, PE, 52050-180, Brazil
| | | | | | - Hélio Amante Miot
- Unesp Medical School, Botucatu, SP, Brazil. .,Departamento de Dermatologia, SN, Campus da Unesp, Botucatu, SP, 18618-000, Brazil.
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Coman G, Holliday A, Mazloom S, Chavan R, Kolodney M. A randomized, split-face, controlled, double-blind, single-centre clinical study: transient addition of a topical corticosteroid to a topical retinoid in patients with acne to reduce initial irritation. Br J Dermatol 2017; 177:567-569. [DOI: 10.1111/bjd.15150] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- G.C. Coman
- Division of Dermatology; Department of Medicine; Virginia Tech Carilion School of Medicine; Suite 300, 1 Riverside Circle Roanoke VA 24016 U.S.A
| | - A.C. Holliday
- Division of Dermatology; Department of Medicine; Virginia Tech Carilion School of Medicine; Suite 300, 1 Riverside Circle Roanoke VA 24016 U.S.A
| | - S.E. Mazloom
- Division of Dermatology; Department of Medicine; Virginia Tech Carilion School of Medicine; Suite 300, 1 Riverside Circle Roanoke VA 24016 U.S.A
| | - R.N. Chavan
- Division of Dermatology; Department of Medicine; Virginia Tech Carilion School of Medicine; Suite 300, 1 Riverside Circle Roanoke VA 24016 U.S.A
| | - M.S. Kolodney
- Department of Dermatology; West Virginia University; P.O. Box 9158 Morgantown WV 26506-9158 U.S.A
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Padhi T, Pradhan S. Oral Tranexamic Acid with Fluocinolone-Based Triple Combination Cream Versus Fluocinolone-Based Triple Combination Cream Alone in Melasma: An Open Labeled Randomized Comparative Trial. Indian J Dermatol 2015; 60:520. [PMID: 26538719 PMCID: PMC4601440 DOI: 10.4103/0019-5154.164416] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background: Melasma is a common acquired cause of facial hyperpigmentation with no definitive therapy. Tranexamic acid, a plasmin inhibitor, has demonstrated depigmenting properties and combining this oral drug with other modalities of treatment has shown promising results. Objectives: To compare the efficacy of a combination of oral tranexamic acid and fluocinolone-based triple combination cream with that of fluocinolone-based triple combination cream alone in melasma among Indian patients. Materials and Methods: 40 patients of melasma of either sex attending to dermatology OPD were enrolled in this study. Participants were randomly divided into two groups with 20 patients in each group. Group A patients were asked to apply the cream only and Group B patients received oral tranexamic acid 250 mg twice daily and applied a triple combination cream containing fluocinolone acetonide 0.01%, tretinoin 0.05%, and hydroquinone 2% once daily for 8 weeks. Response was evaluated using melasma area severity index (MASI) at baseline, 4 weeks, and 8 weeks. Results: 40 patients completed the study. The MASI scores at baseline, 4 weeks and 8 weeks in group A were 15.425 + 1.09, 11.075 + 9.167 and 6.995 + 6.056 respectively and in group B 18.243 + 1.05, 6.135 + 4.94 and 2.19 + 3.38. Intergroup comparison showed a faster reduction in pigmentation in Group B as compared to Group A and the results were statistically significant at 4 weeks (P value 0.014) and 8 weeks (P value 0.000). The efficacy was maintained throughout the 6-month follow-up period. Conclusion: Addition of oral tranexamic acid to fluocinolone-based triple combination cream results in a faster and sustained improvement in the treatment of melasma.
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Affiliation(s)
- Tanmay Padhi
- Department of Dermatology and Venereology, VSS Medical College, Sambalpur, Odisha, India
| | - Swetalina Pradhan
- Department of Dermatology and Venereology, VSS Medical College, Sambalpur, Odisha, India
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15
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Rodrigues M, Pandya AG. Melasma: clinical diagnosis and management options. Australas J Dermatol 2015; 56:151-63. [DOI: 10.1111/ajd.12290] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2014] [Accepted: 11/19/2014] [Indexed: 12/01/2022]
Affiliation(s)
- Michelle Rodrigues
- Department of Dermatology; St Vincent's Hospital; Melbourne Victoria
- Department of Dermatology; The Royal Children's Hospital; Melbourne
- The Skin and Cancer Foundation; Inc
| | - Amit G Pandya
- Department of Dermatology; University of Texas; Southwestern Medical Centre; Dallas Texas USA
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16
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Affiliation(s)
- Kiran V Godse
- Shree Skin Centre, 22, L market, Sector 8, Nerul, Navi Mumbai, India.
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17
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Arellano I, Cestari T, Ocampo-Candiani J, Azulay-Abulafia L, Bezerra Trindade Neto P, Hexsel D, Machado-Pinto J, Muñoz H, Rivitti-Machado M, Sittart J, Trindade de Almeida A, Rego V, Paliargues F, Marques-Hassun K. Preventing melasma recurrence: prescribing a maintenance regimen with an effective triple combination cream based on long-standing clinical severity. J Eur Acad Dermatol Venereol 2011; 26:611-8. [DOI: 10.1111/j.1468-3083.2011.04135.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Tan S. Exogenous ochronosis in ethnic Chinese Asians: a clinicopathological study, diagnosis and treatment. J Eur Acad Dermatol Venereol 2010; 25:842-50. [DOI: 10.1111/j.1468-3083.2010.03904.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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