The estrogen receptor β (ERβ) gene plays an important role in the regulation of fertility in both males and females. The RsaI polymorphism in ERβ is associated with male infertility in Caucasian patients. The aim of this study was to investigate the frequency of this polymorphism in the etiology of idiopathic male infertility and its correlation with smoking habits. We analyzed 287 Brazilian me...

Using a nitrocefin competition assay, I determined the relative substrate affinity index (RSAI) values of nine clinically significant beta-lactamase enzymes against a range of beta-lactams. Using selected beta-lactam substrates, I observed large differences in the RSAI values of the nine enzymes that were sufficient in many cases to positively identify specific enzymes. I made use of the unique...

Resting-state functional MRI (fMRI) could be an advantageous choice for clinical applications by virtue of its clinical convenience and non-invasiveness. Without explicit stimulus, resting-state brain activity patterns cannot be obtained using any model-driven method. In this study, we advanced a measure named resting-state activity index (RSAI) to evaluate the resting-state brain activities. U...

Analysis of DNA from the &globin gene cluster in an Albanian family identified a novel RsaI site approximately 550 base pairs 5' to the &globin gene. In this family, two chromosomes carrying otherwise identical B-globin haplotypes were found to differ at the RsaI site. Population screening demonstrated the presence and absence of the site in DNA from individuals of northern European, Mediterran...

The aim of this study was to investigate the potential correlation between polymorphisms of the estrogen receptor (ER)-β gene (RsaI and AluI) and ethnic Han Chinese human idiopathic thin endometrium. A total of 120 patients with idiopathic thin endometrium and 120 sterility patients with normal endometrium thickness (controls) were included in the study. RsaI and AluI polymorphisms of the ER-β ...

BACKGROUND Previous reports implicate CYP2E1 RsaI/PstI polymorphism as a possible risk factor for several cancers. Published studies on the relationship of CYP2E1 RsaI/PstI polymorphisms with the susceptibility to gastric cancer are controversial. This study aimed to determine this relationship accurately. METHODS Meta-analyses that assessed the association of CYP2E1 RsaI/PstI variations with...

Objective. To explore the distribution of ER RsaI genotype in children who lived in the areas with or without high fluoride in drinking water, and investigate the relationship between ER gene RsaI polymorphisms and children’s dental fluorosis. Methods. We conducted a case-control study among children aged 8 to 12 years old with (n=74) or without (n = 163) dental fluorosis in two counties in Hen...

Many public key cryptographic schemes (such a s c u b i c RSA) are based on low degree polynomials whose inverses are high degree polynomials. These functions are very easy to compute but time consuming to invert even by their legitimate users. To m a k e such s c hemes more eecient, we consider in this paper the class of birational permutations f over k-tuples of numbers, in which both f and f...