Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 6 de 6
Filtrar
1.
J Am Acad Dermatol ; 75(1): 106-12, 2016 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-27067869

RESUMO

BACKGROUND: Solid organ transplant recipients are at increased risk of skin cancer, but population-based mortality data are limited. OBJECTIVE: Mortality and predictors of skin cancer death posttransplantation were investigated. METHODS: All US organ transplant recipients between 1987 and 2013, identified through the Organ Procurement and Transplantation Network Standard Transplant Analysis and Research file, were included. Mortality and hazard ratios (HR) were calculated for the overall population and patient subgroups. RESULTS: The overall mortality was 5308 per 100,000 person-years and the skin cancer-specific mortality was 35.27 per 100,000 person-years. Risk factors associated with skin cancer death included thoracic versus abdominal transplantation (HR 2.90, 95% confidence interval [CI] 2.52-3.34), age over 50 years (HR 2.86, CI 2.43-3.38), white race (HR 6.29, CI 4.63-8.53), and male sex (HR 1.85, CI 1.57-2.19). Mortality was highest for malignant melanoma (mortality of 11.48), followed by squamous cell carcinoma (mortality of 4.94) and Merkel cell carcinoma (mortality of 4.59). LIMITATIONS: Limitations of this study included potential underreporting and misclassification of death from skin cancer in the data set. CONCLUSION: Mortality from posttransplantation skin cancer is reported. Older patients, male patients, white patients, and thoracic transplant recipients had increased mortality from skin cancer.


Assuntos
Carcinoma de Célula de Merkel/mortalidade , Carcinoma de Células Escamosas/mortalidade , Melanoma/mortalidade , Transplante de Órgãos/estatística & dados numéricos , Neoplasias Cutâneas/mortalidade , Adolescente , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Mortalidade/etnologia , Mortalidade/tendências , Transplante de Órgãos/mortalidade , Fatores de Risco , Fatores Sexuais , Estados Unidos/epidemiologia , Adulto Jovem
2.
J Am Acad Dermatol ; 71(4): 731-7, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-24928709

RESUMO

BACKGROUND: Fitzpatrick skin phototype (FSPT) is the most common method used to assess sunburn risk and is an independent predictor of skin cancer risk. Because of a conventional assumption that FSPT is predictable based on pigmentary phenotypes, physicians frequently estimate FSPT based on patient appearance. OBJECTIVE: We sought to determine the degree to which self-reported race and pigmentary phenotypes are predictive of FSPT in a large, ethnically diverse population. METHODS: A cross-sectional survey collected responses from 3386 individuals regarding self-reported FSPT, pigmentary phenotypes, race, age, and sex. Univariate and multivariate logistic regression analyses were performed to determine variables that significantly predict FSPT. RESULTS: Race, sex, skin color, eye color, and hair color are significant but weak independent predictors of FSPT (P<.0001). A multivariate model constructed using all independent predictors of FSPT only accurately predicted FSPT to within 1 point on the Fitzpatrick scale with 92% accuracy (weighted kappa statistic 0.53). LIMITATIONS: Our study enriched for responses from ethnic minorities and does not fully represent the demographics of the US population. CONCLUSIONS: Patient self-reported race and pigmentary phenotypes are inaccurate predictors of sun sensitivity as defined by FSPT. There are limitations to using patient-reported race and appearance in predicting individual sunburn risk.


Assuntos
Etnicidade/genética , Predisposição Genética para Doença/epidemiologia , Grupos Raciais/genética , Autorrelato , Pigmentação da Pele/genética , Pele/efeitos da radiação , Adulto , Fatores Etários , Análise de Variância , California/epidemiologia , Estudos Transversais , Feminino , Humanos , Incidência , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Fenótipo , Transtornos de Fotossensibilidade/etnologia , Transtornos de Fotossensibilidade/genética , Valor Preditivo dos Testes , Medição de Risco , Fatores Sexuais , Neoplasias Cutâneas/etnologia , Neoplasias Cutâneas/genética , Pigmentação da Pele/fisiologia , Queimadura Solar/etnologia , Queimadura Solar/genética , Inquéritos e Questionários , Adulto Jovem
3.
JAMA Dermatol ; 152(7): 783-8, 2016 07 01.
Artigo em Inglês | MEDLINE | ID: mdl-26942548

RESUMO

IMPORTANCE: Qualitative evidence suggests that hirsutism inflicts significant negative impacts on quality of life and may be associated with depression. Quantitative research is essential to determine best practices in caring for hirsute patients. OBJECTIVE: To quantify quality-of-life impact of hirsutism and evaluate how the degree of hirsutism (as assessed by patients and clinicians) is associated with quality of life and depressive symptoms. DESIGN, SETTING, PARTICIPANTS: This study included 229 patients aged 14 to 52 years consecutively recruited from a polycystic ovarian syndrome (PCOS) clinic between May 18, 2006, and October 25, 2012, who met the Rotterdam PCOS criteria. Data analysis was completed July 2015, and alterations were completed in response to reviewer comments in January 2016. MAIN OUTCOMES AND MEASURES: Clinicians and patients rated degree of hirsutism using the modified Ferriman-Gallwey (mFG) instrument, a visual scoring method assessing androgen-dependent hair growth in 9 body areas. Hirsutism-related quality of life was assessed using the Skindex-16, a validated quality of life instrument for skin disorders. Depressive symptoms were assessed using the Beck Depression Inventory-Fast screen. RESULTS: Overall, 229 patients aged 14 to 52 years who met the Rotterdam criteria for polycystic ovarian syndrome rated themselves and were rated by clinicians for hirsutism. Total mean self-rated mFG score for patients was 13.3 out of a total 36 possible points; total mean clinician-rated mFG score for patients was 8.63 (P < .001); self-ratings for hirsutism were higher for all body areas except thigh. Hirsutism had a significant negative effect on quality of life; the mean (SD) Skindex-16 score for the emotion domain was 73.9 (29.8) and 44.3 (33.7) for the function domain. Higher degrees of hirsutism (determined by both patients and clinicians) were moderately associated with more negative quality-of-life impact; however, self-ratings (r = 0.19-0.46) were more strongly associated than clinician ratings (r = 0.14-0.32)(P < .05 for all). Only self-ratings of hirsutism were significantly associated with risk of depression (r = 0.14; P < .05). CONCLUSIONS AND RELEVANCE: There is notable discordance in the perception of hirsutism between patients and clinicians; patients view their hirsutism as more severe than clinicians do. Quality-of-life impacts of hirsutism are consistent with that reported for other serious skin conditions. This negative impact is only partially associated with the degree of hirsutism, with self-ratings being more highly associated with quality of life impact than clinician ratings. These results support guidelines recommending that treatment be guided largely by patient distress with hair growth and subjective perceptions as opposed to clinician judgment of degree. Patient self-rating is critical information for patient-centered care for hirsute patients.


Assuntos
Depressão/etiologia , Autoavaliação Diagnóstica , Hirsutismo/psicologia , Síndrome do Ovário Policístico/psicologia , Qualidade de Vida/psicologia , Adolescente , Adulto , Dermatologia , Feminino , Hirsutismo/diagnóstico , Humanos , Pessoa de Meia-Idade , Índice de Gravidade de Doença , Adulto Jovem
4.
Int J Dermatol ; 54(6): 617-25, 2015 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-25773292

RESUMO

IMPORTANCE: Cutaneous granulomas without an identifiable infectious etiology are a rare manifestation of primary immunodeficiency (ID). These cutaneous lesions can be misdiagnosed, often as sarcoidosis, when the skin findings precede the diagnosis of immunodeficiency. OBJECTIVE: We present four cases from our institution and review the literature in order to emphasize the clinical relevance of this association, discuss the histologic and immunohistochemical features, and explore possible pathogenic mechanisms of granuloma formation. EVIDENCE REVIEW: We retrospectively reviewed case reports of all patients presenting with cutaneous granulomas in the setting of primary immunodeficiency. Cases with insufficient information to confirm an immunodeficiency state were excluded. Four patients from our clinic were included, for 54 total cases. FINDINGS: The majority of cutaneous granulomas are seen in three types of immunodeficiencies: ataxia-telangiectasia, severe combined immunodeficiency, and combined variable immunodeficiency. Twenty-six percent of patients developed cutaneous granulomas prior to their immunodeficiency diagnosis. Histologically, various granulomatous patterns have been described. Immunohistochemistry revealed a CD4+/CD8+ lymphocyte ratio of less than or equal to 1 in our four patients, which may help differentiate cutaneous granulomas in primary ID from sarcoidal granulomas that typically show a CD4+ predominance. CONCLUSIONS AND RELEVANCE: Cutaneous granulomas are a rare manifestation of primary ID and occur predominantly in immunodeficiencies that affect T and B cell compartments.


Assuntos
Granuloma/imunologia , Síndromes de Imunodeficiência/complicações , Dermatopatias/imunologia , Criança , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Adulto Jovem
5.
Methods Mol Biol ; 802: 3-17, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22130870

RESUMO

DNA microarray technology has been used for genome-wide gene expression studies that incorporate molecular genetics and computer science analyses on massive levels. The availability of microarrays permit the simultaneous analysis of tens of thousands of genes for the purposes of gene discovery, disease diagnosis, improved drug development, and therapeutics tailored to specific disease processes. In this chapter, we provide an overview on the current state of common microarray technologies and platforms. Since many genes contribute to normal functioning, research efforts are moving from the search for a disease-specific gene to the understanding of the biochemical and molecular functioning of a variety of genes whose disrupted interaction in complicated networks can lead to a disease state. The field of microarrays has evolved over the past decade and is now standardized with a high level of quality control, while providing a relatively inexpensive and reliable alternative to studying various aspects of gene expression.


Assuntos
Análise de Sequência com Séries de Oligonucleotídeos/métodos , Primers do DNA , Bases de Dados de Ácidos Nucleicos , Desenho de Equipamento , Corantes Fluorescentes , Perfilação da Expressão Gênica/métodos , Humanos , Análise de Sequência com Séries de Oligonucleotídeos/instrumentação
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA