Abstract:
BACKGROUND:UV radiation is the major environmental factor related to development of cutaneous melanoma. Besides sun exposure and the influence of latitude, some host characteristics such as skin phototype and hair and eye color are also risk factors for melanoma. Polymorphisms in DNA repair genes could be good candidates for susceptibility genes, mainly in geographical regions exposed to high solar radiation. OBJECTIVE:Evaluate the role of host characteristics and DNA repair polymorphism in melanoma risk in Brazil. METHODS:We carried out a hospital-based case-control study in Brazil to evaluate the contribution of host factors and polymorphisms in DNA repair to melanoma risk. A total of 412 patients (202 with melanoma and 210 controls) were analyzed regarding host characteristics for melanoma risk as well as for 11 polymorphisms in DNA repair genes. RESULTS:We found an association of host characteristics with melanoma development, such as eye and hair color, fair skin, history of pigmented lesions removed, sunburns in childhood and adolescence, and also European ancestry. Regarding DNA repair gene polymorphisms, we found protection for the XPG 1104 His/His genotype (OR 0.32; 95% CI 0.13-0.75), and increased risk for three polymorphisms in the XPC gene (PAT+; IV-6A and 939Gln), which represent a haplotype for XPC. Melanoma risk was higher in individuals carrying the complete XPC haplotype than each individual polymorphism (OR 3.64; 95% CI 1.77-7.48). CONCLUSIONS:Our data indicate that the host factors European ancestry and XPC polymorphisms contributed to melanoma risk in a region exposed to high sun radiation.
journal_name
J Dermatol Scijournal_title
Journal of dermatological scienceauthors
Gonçalves FT,Francisco G,de Souza SP,Luiz OC,Festa-Neto C,Sanches JA,Chammas R,Gattas GJ,Eluf-Neto Jdoi
10.1016/j.jdermsci.2011.06.003subject
Has Abstractpub_date
2011-10-01 00:00:00pages
59-66issue
1eissn
0923-1811issn
1873-569Xpii
S0923-1811(11)00177-0journal_volume
64pub_type
杂志文章abstract::Crude enzyme solutions of prolidase were extracted from cultured human skin fibroblasts derived from control and prolidase-deficient sisters. Two forms of prolidases (prolidase-I and II) were partially purified by high performance liquid chromatography equipped with an ion exchange column. On gel filtration, the relat...
journal_title:Journal of dermatological science
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abstract:BACKGROUND:Ustekinumab has been evaluated in Caucasian patients with psoriasis, but no studies have been conducted in Asian patients. OBJECTIVE:To assess the efficacy and safety of ustekinumab in Taiwanese and Korean patients with moderate-to-severe psoriasis. METHODS:In this 36-week, multicenter, double-blind, place...
journal_title:Journal of dermatological science
pub_type: 杂志文章,多中心研究,随机对照试验
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abstract::p53, A tumor suppressor gene, has been documented as the most frequently mutated gene in human cancers including non-melanoma skin tumors. It has been controversial whether the p53 gene mutation plays a major role for melanoma genesis. To examine the role of p53 in human malignant melanoma carcinogenesis, we performed...
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journal_title:Journal of dermatological science
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journal_title:Journal of dermatological science
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journal_title:Journal of dermatological science
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journal_title:Journal of dermatological science
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abstract:BACKGROUND:Hydroquinone (HQ) and salicylic acid (SA) are drugs for treating melasma through the mechanisms of tyrosinase inhibition and chemical peeling, respectively. Their high frequency of causing skin irritation has led to limited use of both drugs. OBJECTIVES:We designed the new conjugates obtained by joining HQ ...
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journal_title:Journal of dermatological science
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journal_title:Journal of dermatological science
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journal_title:Journal of dermatological science
pub_type: 杂志文章
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journal_title:Journal of dermatological science
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journal_title:Journal of dermatological science
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