(1-4). These facts suggest that vitamin E may affect not only on blood coagulation but also on the platelet function. Recently, we found that ƒ¿-tocopheryl ace tate (referred as Toc-ac) inhibited time depen dant decrease of platelet number in the preser ved blood with EDTA-K2 as anticoagulant (5). In the present paper, the effect of Toc ac and ƒ¿-tocopheryl acetophosphate (Toc-acp) on the ADP i...

We evaluated the inducibility of nitrate-dependent Fe(II)-EDTA oxidation (NDFO) in non-growth, chloramphenicol-amended, resting-cell suspensions of Dechloromonas sp. strain UWNR4 and Acidovorax sp. strain 2AN. Cells previously incubated with Fe(II)-EDTA oxidized ca. 6-fold more Fe(II)-EDTA than cells previously incubated with Fe(III)-EDTA. This is the first report of induction of NDFO by Fe(II).

FTIR and EXAFS spectroscopic measurements were performed on Pb(II)EDTA adsorbed on goethite as functions of pH (4-6), Pb(II)EDTA concentration (0.11 μM 72 μM), and ionic strength (16 μM 0.5M). FTIR measurements show no evidence for carboxylate-Fe(III) bonding or protonation of EDTA at Pb:EDTA = 1:1. Both FTIR and EXAFS measurements suggest that EDTA acts as a hexadentate ligand, with all four o...

UNLABELLED Dental roots that have been exposed to the oral cavity and periodontal pocket environment present superficial changes, which can prevent connective tissue reattachment. Demineralizing agents have been used as an adjunct to the periodontal treatment aiming at restoring the biocompatibility of roots. OBJECTIVE This study compared four commonly used demineralizing agents for their cap...

Phosphopeptide pTyr-Glu-Glu-Ile (pYEEI) has been introduced as an optimal Src SH2 domain ligand. Peptides, Ac-K(IDA)pYEEIEK(IDA) (1), Ac-KpYEEIEK (2), Ac-K(IDA)pYEEIEK (3), and Ac-KpYEEIEK(IDA) (4), containing 0-2 iminodiacetate (IDA) groups at the N- and C-terminal lysine residues were synthesized and evaluated as the Src SH2 domain binding ligands. Fluorescence polarization assays showed that...

Background/Aim: This study aimed to evaluate the precision of Raypex 6 apex locator in locating apical constriction (AC) and major foramen (MF) during a root canal treatment compared with microscopic evaluation. Another aim present was accuracy presence different irrigating solutions (NaOCl, saline, EDTA, etidronic acid-HEBP). Material Methods: One hundred nine patients were included this rando...