RESUMO
The aim of this work was to study the estrogen receptor alpha (ERS1) PvuII and XbaI gene polymorphisms prevalence in randomly selected women population from Rio de Janeiro and Espírito Santo states in Brazil by polymerase chain reaction restriction fragment lengths polymorphism (PCR_RFLP) methodology. It was shown that Rio de Janeiro women exhibited a significantly different prevalence of XbaI polymorphism comparing to Espirito Santo women. Nonetheless, similar prevalence of PvuII polymorphism was found in both women´s populations. Moreover, a strong linkage disequilibrium was observed between these SNPs reinforcing the hypothesis of differential pattern of inheritance observed on such populations.
RESUMO
Inorganic phosphate (Pi) presents a crucial role in cellular metabolism, with the kidney and intestine as the principal regulating organs of the homeostasis of this nutrient. Maintaining phosphate balance results from the activity of different subtype of transporters of sodium-dependent phosphate that use the electrochemical gradient of sodium ions to carry out cotransport. Several diseases have been related to dysfunctions of phosphate cotransporters, including in the area of oncology. A study using the SAGE technique pointed to a possible role of the type IIb sodium-phosphate cotransporter (NaPi-IIb), encoded by the SLC34A2 gene, in ovarian carcinogenesis. More recently, such protein was associated with the development of other carcinomas and some of the components that regulate its function were determined. It is believed that in the future, the analysis of SLC34A2 expression in tumor samples will help in the choice of treatment, evaluation of prognosis and be a possible target for new therapeutic strategies.