The epithelial Na(+) channel (ENaC) functions as a pathway for Na(+) absorption in the kidney and lung, where it is crucial for Na(+) homeostasis and blood pressure regulation. However, the basic mechanisms that control ENaC gating are poorly understood. Here we define a role in gating for residues forming interfaces between the extracellular domains of the three ENaC subunits. Using cysteine s...

We present a combined study of single and double K–K electron transfer cross sections along with the single and double K-shell ionization of Ar induced by Si projectiles in the energy range 0.9–4.0 MeV u−1. The charge-state dependence of the normal and hypersatellite x-rays was used to derive the cross sections for the oneand two-electron processes, respectively. The enhancement in the fluoresc...

background : brucellosis is a major bacterial zoonosis of global importance with the causative organisms of gram-negative facultative intracellular pathogens. the aims of this study were to standardize two immunoelectrophoretic techniques, rocket and cross immunoelectrophoresis, and compare their results with other conventional serodiagnostic tests. methods : sera from 15 sheep, without any his...

background: the ultrasonography probes are cleaned by absorbent soft, dry cloth. this question arose whether linear and convex ultrasound probes coupling with gel could perform as a means for nosocomial infections transmission, and which method is economical and more efficient for cleaning the probes. this study was conducted to answer these questions. methods: one hundred – ninety two patients...

researching on the economic gains of marriage is one of the fields in family economics studies. accordingly, the aim of this paper is to investigate marriage gains as couples' income increases while the main hypothesis is based on cross-productivity effect. the resulted evidence from families of tehran suggests that the cross-productivity effect exists for both of spouses whereas this effe...

there are increasing reports of emergence of multiple drug resistant (mdr) acinetobacter spp in the world; however there are a few reports in our country. 145 a. baumannii isolates from distinct wards and children's medical center (cmc) in tehran were studied in order to find the profile of antibiotic resistance among them. 40.6% (59/145) of a. baumannii isolates were identified as mdr. overall...