RESUMEN
Folate metabolism is essential for DNA synthesis and repair. Alterations in genes that participate in folate metabolism can be associated with several types of malignant neoplasms, including thyroid and breast cancer. In the present case-control study, we examined the association between methylenetetrahydrofolate reductase (MTHFR C677T, rs1801133) and methionine synthase (MTR A2756G, rs1805087) polymorphisms and risk for thyroid and breast cancer. Polymerase chain reaction-restriction fragment length technique was used to determine the specific genotypes in the genes of interest. Statistical analysis was performed by multiple logistic regression test. We found an association between MTHFR C677T polymorphism and risks to both thyroid (OR = 2.50; 95%CI = 1.15-5.46; P = 0.02) and breast cancer (OR = 2.53; 95%CI = 1.08-5.93; P = 0.03). Tobacco consumption and high body mass index were also associated with thyroid cancer. In addition, increased age (≥50 years) and alcohol consumption were found to be associated with breast cancer. Our results indicated that MTHFR C677T is significantly associated with thyroid and breast cancer risks. Thus, these factors may be used as potential prognostic markers for thyroid and breast cancers.
Asunto(s)
5-Metiltetrahidrofolato-Homocisteína S-Metiltransferasa/genética , Neoplasias de la Mama/genética , Metilenotetrahidrofolato Reductasa (NADPH2)/genética , Neoplasias de la Tiroides/genética , 5-Metiltetrahidrofolato-Homocisteína S-Metiltransferasa/metabolismo , Adulto , Anciano , Brasil , Estudios de Casos y Controles , Femenino , Ferredoxina-NADP Reductasa/genética , Ácido Fólico/metabolismo , Predisposición Genética a la Enfermedad , Humanos , Metilenotetrahidrofolato Reductasa (NADPH2)/metabolismo , Persona de Mediana Edad , Polimorfismo de Nucleótido SimpleRESUMEN
Introduction: Currently, two types of atlas provide anatomical studies: those with two-dimensional images, and those compiled by interactive pictures; mostly drawn virtually. In recent decades, the development of virtual anatomical atlases has been encouraged and prioritized by both the technological advances and the need to facilitate and complement medical education. The aim of this study was to develop an interactive virtual atlas of the upper limbs. Material and Methods: A systematic dissection of three upper limbs (shoulder, arm, forearm and hand) of legally preserved cadavers in Anatomy Laboratory of São José do Rio Preto Medical School, SP (FAMERP) has been carried out. Results: A website has been developed to facilitate the learning of superficial and deep structures of the limbs comprising ten pictures showing the steps and the various structures and display devices (naming demarcated structures and text with relevant information about these). In addition, the website includes a photo gallery with subtitled images of the dissected upper limbs. Conclusion: In conclusion, virtual study of Anatomy by means of interactive-image display of dissected parts can facilitate and enhance the learning of the upper limbs.(AU)