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Vitiligo

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https://www.readbyqxmd.com/read/28321929/the-effect-of-butin-on-the-vitiligo-mouse-model-induced-by-hydroquinone
#1
Shi-Xia Huo, Qiong Wang, Xin-Min Liu, Chun-Hui Ge, Li Gao, Xiao-Ming Peng, Ming Yan
Vernonia anthelmintica (L.) Willd has been traditionally used in the treatment of vitiligo in Uyghur medicine. This study used butin, the main component of V. anthelmintica, to study the influence on hydroquinone-induced vitiligo in mice. The animals were randomly divided into six groups: control, model, 8-methoxypsoralen (8-MOP, 4.25 mg/kg), and butin (0.425, 4.25, and 42.5 mg/kg) groups. The number of melanin-containing hair follicles, basal layer melanocytes, melanin-containing epidermal cells, the expression of tyrosinase (TYR) and tyrosinase-related protein-1 (TRP-1), the malondialdehyde (MDA), and cholinesterase (CHE) activity in serum were measured...
March 21, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28320220/a-combination-of-yiqiqubai-granule-and-308-nm-excimer-laser-in-treatment-of-segmental-vitiligo-a-prospective-study-of-233-patients
#2
Chengzhong Zhang, Le Zhou, Jie Huang, Weimin Shi
OBJECTIVE: To study the effect of Yiqiqubai granule combined with 308-nm excimer laser treatment for segmental vitiligo (SV). METHODS: A prospective research was performed in 233 patients with SV treated in Shanghai General Hospital from 11 February 2015 to 25 August 2016, they were divided into group A (n = 75), group B (n = 78) and group C (n = 80) according to the random number table. Group A was treated with Yiqiqubai granule, group B treated with 308-nm excimer laser and group C treated with combined treatments...
March 21, 2017: Journal of Dermatological Treatment
https://www.readbyqxmd.com/read/28318054/efficacy-and-safety-of-targeted-high-intensity-medium-band-304-312-nm-ultraviolet-b-light-in-pediatric-vitiligo
#3
Da-Ke Dong, Zhan-Yan Pan, Juan Zhang, Xue-Fen Lu, Cheng Jin, Shi-Qin Tao, Li-Jia Yang
BACKGROUND/OBJECTIVES: Phototherapy is a commonly used treatment for vitiligo that has demonstrated safety and efficacy. High-intensity targeted ultraviolet B (UVB) light (304-312 nm) delivered using a phototherapy device is a useful therapeutic option because it can induce repigmentation in a short time without global exposure to radiation, but information regarding this device in children is limited. METHODS: We performed a retrospective analysis of 95 patches of vitiligo in 27 children treated using a targeted phototherapy device...
March 20, 2017: Pediatric Dermatology
https://www.readbyqxmd.com/read/28317535/optimizing-vitiligo-management-past-present-and-future
#4
EDITORIAL
John E Harris
No abstract text is available yet for this article.
April 2017: Dermatologic Clinics
https://www.readbyqxmd.com/read/28317534/vitiligo-pathogenesis-and-emerging-treatments
#5
REVIEW
Mehdi Rashighi, John E Harris
The pathogenesis of vitiligo involves interplay between intrinsic and extrinsic melanocyte defects, innate immune inflammation, and T-cell-mediated melanocyte destruction. The goal of treatment is to not only halt disease progression but also promote repigmentation through melanocyte regeneration, proliferation, and migration. Treatment strategies that address all aspects of disease pathogenesis and repigmentation are likely to have greatest efficacy, a strategy that may require combination therapies. Current treatments generally involve nontargeted suppression of autoimmunity, whereas emerging treatments are likely to use a more targeted approach based on in-depth understanding of disease pathogenesis, which may provide higher efficacy with a good safety profile...
April 2017: Dermatologic Clinics
https://www.readbyqxmd.com/read/28317533/genetics-of-vitiligo
#6
REVIEW
Richard A Spritz, Genevieve H L Andersen
Vitiligo reflects simultaneous contributions of multiple genetic risk factors and environmental triggers. Genomewide association studies have discovered approximately 50 genetic loci contributing to vitiligo risk. At many vitiligo susceptibility loci, the relevant genes and DNA sequence variants are identified. Many encode proteins involved in immune regulation, several play roles in cellular apoptosis, and others regulate functions of melanocytes. Although many of the specific biologic mechanisms need elucidation, it is clear that vitiligo is an autoimmune disease involving a complex relationship between immune system programming and function, aspects of the melanocyte autoimmune target, and dysregulation of the immune response...
April 2017: Dermatologic Clinics
https://www.readbyqxmd.com/read/28317532/the-role-of-diet-and-supplements-in-vitiligo-management
#7
REVIEW
Pearl E Grimes, Rama Nashawati
Vitiligo is an autoimmune disorder that involves the interplay between oxidative stress and the immune system. Preliminary observations suggest that the presence of gluten in the diet may play a role in vitiligo development in some patients, but to date vitiligo-specific diets have not been studied. The role of oral supplements, including vitamins, minerals, and botanicals, is increasingly being investigated as adjuncts to conventional medical treatment due to their antioxidant and immunomodulatory activity...
April 2017: Dermatologic Clinics
https://www.readbyqxmd.com/read/28317531/special-considerations-in-children-with-vitiligo
#8
REVIEW
Alain Taïeb, Julien Seneschal, Juliette Mazereeuw-Hautier
Childhood vitiligo differs from adult-onset vitiligo for several features including increased incidence of the segmental variant, higher prevalence of halo nevi, and more common family history for autoimmune diseases and atopic diathesis. The major differential diagnoses are the postinflammatory hypomelanoses for nonsegmental vitiligo and nevus depigmentosus for segmental vitiligo. From a therapeutic standpoint, early awareness of the diagnosis seems to correlate with a good treatment outcome in this age group...
April 2017: Dermatologic Clinics
https://www.readbyqxmd.com/read/28317530/depigmentation-therapies-for-vitiligo
#9
REVIEW
Pearl E Grimes, Rama Nashawati
The general goals of medical management of vitiligo are to repigment vitiliginous areas of skin and to stabilize the progression of depigmentation. However, for some patients with vitiligo affecting extensive body surface areas who are unresponsive to repigmentation therapies, depigmentation of the remaining normal skin may be a better choice. Candidates for depigmentation therapy should be carefully screened and patient education is essential. Permanent topical therapies used for depigmentation include monobenzyl ether of hydroquinone, 4-methoxyphenol, and 88% phenol...
April 2017: Dermatologic Clinics
https://www.readbyqxmd.com/read/28317529/repigmentation-through-melanocyte-regeneration-in-vitiligo
#10
REVIEW
Stanca A Birlea, Nathaniel B Goldstein, David A Norris
Repigmentation in vitiligo is the process that replaces, in the epidermal basal layer of vitiligo skin, the mature melanocytes that have been killed by cytotoxic T cells specific for melanocyte antigens. It consists of mobilization of melanocyte precursors in the hair follicle bulge and infundibulum to proliferate, migrate, and differentiate into mature melanocytes, moving from the hair follicle bulge to the interfollicular epidermis. The most common clinical presentation of repigmentation in vitiligo is the perifollicular pattern...
April 2017: Dermatologic Clinics
https://www.readbyqxmd.com/read/28317528/surgical-therapies-for-vitiligo
#11
REVIEW
Tasneem F Mohammad, Iltefat H Hamzavi
Surgical management is a safe and effective treatment modality for select patients with vitiligo. Many techniques of vitiligo surgery exist, each with unique advantages and disadvantages. Preoperative screening for appropriate candidates, selection of surgical technique, and postoperative management are all key elements in enabling patients to achieve maximal repigmentation.
April 2017: Dermatologic Clinics
https://www.readbyqxmd.com/read/28317527/phototherapy-and-combination-therapies-for-vitiligo
#12
REVIEW
Samia Esmat, Rehab A Hegazy, Suzan Shalaby, Stephen Chu-Sung Hu, Cheng-Che E Lan
Vitiligo is a disease characterized by disappearance of melanocytes from the skin. It can negatively influence the physical appearance of affected individuals, and may profoundly affect a person's psychosocial function and quality of life. Therefore, vitiligo should not be considered as merely a condition that affects a patient's appearance, but needs to be actively treated in patients who seek medical help. Phototherapy has been used as the main treatment modality for patients with vitiligo. Different forms of phototherapy for vitiligo include broadband UVB, narrowband UVB, excimer light and excimer laser, and psoralen plus UVA...
April 2017: Dermatologic Clinics
https://www.readbyqxmd.com/read/28317526/medical-and-maintenance-treatments-for-vitiligo
#13
REVIEW
Thierry Passeron
Medical treatments alone, or in combination with phototherapy, are key approaches for treating nonsegmental vitiligo and, to a lesser extent, segmental vitiligo. The treatments are useful for halting disease progression and have been proven effective for inducing repigmentation and decreasing risk of relapses. Although the treatments have side effects and limitations, vitiligo often induces a marked decrease in quality of life and in most cases the risk:benefit ratio is in favor of an active approach. Systemic and topical agents targeting the pathways involved in loss of melanocytes and in differentiation of melanocyte stem cells should provide more effective approaches in the near future...
April 2017: Dermatologic Clinics
https://www.readbyqxmd.com/read/28317525/chemical-induced-vitiligo
#14
REVIEW
John E Harris
Chemical-induced depigmentation of the skin has been recognized for more than 75 years, first as an occupational hazard but then extending to those using household commercial products as common as hair dyes. Since their discovery, these chemicals have been used therapeutically in patients with severe vitiligo to depigment their remaining skin and improve their appearance. Because chemical-induced depigmentation is clinically and histologically indistinguishable from nonchemically induced vitiligo, and because these chemicals appear to induce melanocyte autoimmunity, this phenomenon should be known as "chemical-induced vitiligo," rather than less accurate terms that have been previously used...
April 2017: Dermatologic Clinics
https://www.readbyqxmd.com/read/28317524/segmental-vitiligo
#15
REVIEW
Nanja van Geel, Reinhart Speeckaert
Segmental vitiligo is characterized by its early onset, rapid stabilization, and unilateral distribution. Recent evidence suggests that segmental and nonsegmental vitiligo could represent variants of the same disease spectrum. Observational studies with respect to its distribution pattern point to a possible role of cutaneous mosaicism, whereas the original stated dermatomal distribution seems to be a misnomer. Although the exact pathogenic mechanism behind the melanocyte destruction is still unknown, increasing evidence has been published on the autoimmune/inflammatory theory of segmental vitiligo...
April 2017: Dermatologic Clinics
https://www.readbyqxmd.com/read/28317523/presentations-signs-of-activity-and-differential-diagnosis-of-vitiligo
#16
REVIEW
Boon-Kee Goh, Amit G Pandya
Vitiligo has a variety of presentations, including focal, acrofacial, segmental, and generalized forms. Thorough knowledge of these presentations is important to make the correct diagnosis. Signs of activity are important to recognize so that treatment is optimized. Clinical findings of confettilike depigmentation, trichrome and inflammatory vitiligo, and the Koebner phenomenon should alert the clinician that a patient's disease is likely to worsen. These patients may require systemic treatment to stabilize their disease...
April 2017: Dermatologic Clinics
https://www.readbyqxmd.com/read/28317522/skin-cancer-risk-nonmelanoma-skin-cancers-melanoma-in-vitiligo-patients
#17
REVIEW
Michelle Rodrigues
The relative genetic and immune protection against melanoma and nonmelanoma skin cancers in those with vitiligo is reassuring. The results of recent studies allow us to be cautiously optimistic when discussing the risk of skin cancer caused by therapeutic exposure to narrow-band ultraviolet B light. However, we should continue to recommend sun protection at all other times to avoid burning in vitiliginous skin and to decrease incidental ultraviolet exposure. It is also important to perform full skin checks regularly in light of the prolonged courses of phototherapy required to repigment vitiliginous skin and maintain repigmentation thereafter...
April 2017: Dermatologic Clinics
https://www.readbyqxmd.com/read/28317521/quality-of-life-burden-of-disease-co-morbidities-and-systemic-effects-in-vitiligo%C3%A2-patients
#18
REVIEW
Nada Elbuluk, Khaled Ezzedine
Vitiligo is a complex, systemic disease associated with many autoimmune and autoinflammatory conditions. Additionally, the cutaneous changes of vitiligo have significant effects on quality of life and self-esteem. Further efforts are needed to increase our understanding of vitiligo comorbidities as well as to increase awareness of the psychological effects of vitiligo.
April 2017: Dermatologic Clinics
https://www.readbyqxmd.com/read/28317520/the-medical-treatment-of-vitiligo-an-historical-review
#19
REVIEW
James J Nordlund
Discolorations of the skin, such as vitiligo, were recognized thousands of years ago. White spots caused by vitiligo and other disorders have caused significant social opprobrium to those disfigured by these pigmentary disorders, throughout history and still in the present day. Treatments have been desperately sought with only partial success. Recent advances suggest that vitiligo and other pigmentary disorders might soon be curable.
April 2017: Dermatologic Clinics
https://www.readbyqxmd.com/read/28314912/differences-in-the-melanosome-distribution-within-the-epidermal-melanin-units-and-its-association-with-the-impairing-background-of-leukoderma-in-vitiligo-and-halo-nevi-a-retrospective-study
#20
Xi-Xi Xiong, Gao-Zhong Ding, Wen-E Zhao, Xue Li, Yu-Ting Ling, Li Sun, Qing-Li Gong, Yan Lu
Skin color is determined by the number of melanin granules produced by melanocytes that are transferred to keratinocytes. Melanin synthesis and the distribution of melanosomes to keratinocytes within the epidermal melanin unit (EMU) within the skin of vitiligo patients have been poorly studied. The ultrastructure and distribution of melanosomes in melanocytes and surrounding keratinocytes in perilesional vitiligo and normal skin were investigated using transmission electron microscopy (TEM). Furthermore, we performed a quantitative analysis of melanosome distribution within the EMUs with scatter plot...
March 17, 2017: Archives of Dermatological Research
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