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Vol. 37. Issue 5.
Pages 259-265 (May 2013)
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Vol. 37. Issue 5.
Pages 259-265 (May 2013)
Original article
Study on bladder cancer susceptibility and genetic polymorphisms of XPC, XPG, and CYP in smokers and non-smokers
Estudio sobre susceptibilidad de cáncer de vejiga y polimorfismos genéticos de XPC, XPG y CYP en fumadores y no fumadores
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H. Wena,1, C.C. Fenga,1, Z.J. Fanga, G.W. Xiaa, H.W. Jianga, G. Xua, X.D. Huangb, Q. Dinga,
Corresponding author
a Servicio de Urología, Hospital Huashan, Universidad de Fudan, Shanghai, China
b Servicio de Urología, Hospital People's of Qidong, Qidong, Jiangsu, China
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Tables (6)
Table 1. Gene polymorphisms of candidate genes.
Table 2. Characteristics of patients and bladder cancer.
Table 3. Genotypes of bladder cancer.
Table 4. Association between genotypes and smoking status.
Table 5. Associations between genotypes and tumor grade and stage.
Table 6. Associations between gene numbers and risks of bladder cancer.
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Abstract
Aim

To investigate the gene susceptibility of bladder cancer and potential relation with smoking.

Methods

An analysis of SNPs were conducted among DNA repair genes of XPC, XPG, XRCC1, and six members of metabolic enzyme gene CYP 450 via TaqMan Probe-based polymerase chain reaction. A total of 130 patients with bladder cancer and 304 healthy controls were involved.

Results

Polymorphisms of XPC gene was related to bladder cancer. It was also related to smoking status in bladder cancer patients, as well as to tumor stage, male gender and older age. The XPG gene polymorphism was also related to bladder cancer yet it was prevalent in female non-smokers. No association was acquired for XRCC1 gene. The combination of more than 2 polymorphisms in DNA repair genes was associated with bladder cancer. No association was obtained in any of the metabolic enzyme gene of CYP450 with either bladder cancer or smoking status.

Conclusion

DNA repair genes XPC and XPG could be related to carcinogenesis and tumor progression of bladder cancer. Confirmation within larger population was warranted.

Keywords:
Polymorphism
Bladder cancer
Single nucleotide
Tobacco
Resumen
Objetivo

Investigar la susceptibilidad del gen de cáncer de vejiga y la relación potencial con el tabaquismo.

Métodos

Se realizó un análisis de los SNP entre los genes de reparación del ADN de XPC, XPG, XRCC1 y seis miembros del gen de enzima metabólica CYP 450 por reacción en cadena de la polimerasa basada en sonda TaqMan. Un total de 130 pacientes con cáncer de vejiga y 304 controles sanos estuvieron involucrados.

Resultados

Los polimorfismos del gen XPC se relacionaron con el cáncer de vejiga. También se relacionaron con el hábito de fumar en pacientes con cáncer de vejiga, así como con el estadio del tumor, el sexo masculino y la edad avanzada. El polimorfismo del gen XPG también se relacionó con el cáncer de vejiga, sin embargo, era frecuente en mujeres no fumadoras. No se encontró asociación para el gen XRCC1. La combinación de más de 2 polimorfismos en genes de reparación del ADN se asoció con el cáncer de vejiga. No se obtuvo ninguna asociación en ningún gen de la enzima metabólica de CYP450 con cáncer de vejiga o hábito de fumar.

Conclusión

Los genes de reparación del ADN XPC y XPG podrían estar relacionados con la carcinogénesis y la progresión del tumor de cáncer de vejiga. Se garantizó confirmación dentro de una población más grande.

Palabras clave:
Polimorfismo
Cáncer de vejiga
Nucleótido único
Tabaco

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