comparative evaluation of efficiency of XP-endo shaper, XP-endo finisher, and XP-endo finisher-R files in terms of residual root filling material, preservation of root dentin, and time during retreatment procedures in oval canals - A cone-beam computed tomography analysis.

Background: In an oval-shaped canal, no single instrumentation systems were effective in absolute removing obturation.

Aim: The aim of the study was to evaluate the performance of ProTaper Universal Retreatment (PTUR) system, XP-endo Shaper (XPS), XP-endo Finisher (XPF), and XP-endo Finisher-R (XPF-R) in removing root-canal filling material and preservation of sound dentin during retreatment procedure.

Methodology: Root-canal preparation was performed on 60 mandibular premolars with oval-shaped canals using the ProTaper Gold file system.

Impact of catalytic iron on mortality in patients with acute coronary syndrome exposed to iodinated radiocontrast-The Iscom Study.

Background: Catalytic iron (CI) mediates vascular injury by generating reactive oxygen species. We evaluated role of CI in predicting mortality in patients with acute coronary syndrome (ACS) and studied association of contrast nephropathy with CI levels.

Methods: We investigated 806 patients with ACS undergoing contrast exposure for a cardiac procedure who were followed up for 30 days.

HLA-G has a concentration-dependent effect on the generation of an allo-CTL response.

Human leucocyte antigen (HLA) -G is expressed on trophoblast cells during pregnancy, suggesting a role in protection of the semiallogeneic fetus. Published data suggest that HLA-G protects a cell against natural killer cell lysis. It has been hypothesized that HLA-G may also protect the fetus by preventing allo-cytotoxic T lymphocyte (CTL) responses.

Variability in the expression of trophectodermal markers beta-human chorionic gonadotrophin, human leukocyte antigen-G and pregnancy specific beta-1 glycoprotein by the human blastocyst.

Improved culture conditions that support the development of human embryos to the blastocyst stage in vitro led to the prospect of blastocyst transfer to increase pregnancy rates. Thus, there is a need for characterization of possible biochemical markers able to predict the implantation potential of human blastocysts. In this study, the expression of three placental markers that are expressed prior to implantation, beta-human chorionic gonadotrophin (HCG), human leukocyte antigen (HLA)-G and pregnancy specific beta-1 glycoprotein (SP-1), was investigated.

HLA-G isoforms produced by placental cytotrophoblasts and found in amniotic fluid are due to unusual glycosylation.

The human placenta expresses HLA-G, a nonclassical (class Ib) MHC molecule that could play a central role in maternal tolerance of the semiallogeneic fetus. In this work, we report the production of a new mAb, 4H84, that specifically reacts with HLA-G in two formats: immunocytochemistry and immunoblotting. Immunolocalization experiments with 4H84 confirmed our previous finding that cytotrophoblasts within the uterine wall are the only cells in tissue sections of placenta that express the HLA-G protein.