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| Masood,Nosheen; Kayani,Mahmood Akhtar. |
| CYP1A1 is the phase I enzyme that detoxifies the carcinogen or converts it into a more electrophilic form, metabolized by phase II enzymes like GSTP1. These detoxifying genes have been extensively studied in association with head and neck cancer (HNC) in different ethnic groups worldwide. The current study was aimed at screening genetic polymorphisms of genes CYP1A1 and GSTP1 in 388 Pakistani HNC patients and 150 cancer-free healthy controls, using PCR-SSCP. No already known variants of either gene were found, however a novel frameshift mutation due to insertion of T (g.2842_2843insT) was observed in the CYP1A1 gene. A statistically significant number (5.4%) of HNC cases, with the mean age of 51.75 (±15.7) years, presented this frameshift mutation in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: GSTP1; CYP1A1; Head and neck cancer; Polymorphisms; Mutations. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000400001 |
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| Leichsenring,A.; Losi-Guembarovski,R.; Maciel,M.E.; Losi-Guembarovski,A.; Oliveira,B.W.; Ramos,G.; Cavalcanti,T.C.S.; Bicalho,M.G.; Cavalli,I.J.; Cólus,I.M.S.; Ribeiro,E.M.S.F.. |
| CYP1A1 and GSTP1 polymorphisms have been associated with a higher risk to develop several cancers, including oral squamous cell carcinoma (OSCC), which is closely related to tobacco and alcohol consumption. Both genes code for enzymes that have an important role in activating or detoxifying carcinogenic elements found in tobacco and other compounds, and polymorphic variants of these genes may result in alterations of the enzymatic activity. The CYP1A1 gene codes for the enzyme aryl hydrocarbon hydroxylase, which is responsible for the metabolism of polycyclic aromatic hydrocarbons. The investigated polymorphism, Ile/Val, seems to increase the activity of the enzyme in homozygous individuals, leading to an accumulation of carcinogens. The Ile/Val... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oral carcinoma; Biometabolism genes; CYP1A1; GSTP1; Gene polymorphism. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2006001200007 |
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