Our conclusions are confirmed due to micro-tomographic three-dimensional reconstructions of the same object with a microscopic resolution. (C) 2011 American Institute of Physics. [doi:10.1063/1.3624592]“
“Ethanol extracts of brown seaweeds from Pakistan and China were isolated and compared for their antiallergenic activities. They included Sargassum tennerimum (ST) and Sargassum cervicorne (SC) from Pakistan,
and Sargassum graminifolium turn (SG), Sargassum thunbergii (STH), and Laminaria japonica (LJ) from China. The ethanol extracts of these brown seaweeds were optimized at 85% (v/v) ethanol for the maximum yield of phlorotannin, an inhibitor against hyaluronidase. Total phlorotannins contained in the crude extracts were measured as 1.71% (SG), 0.74% (STH), Sapitinib supplier 0.97% (LJ), 3.30% (SC), and 5.06% (ST). The 50% inhibitory concentrations (IC50) of Pakistani SC and ST were 109.5 and 21 mu g/ml, respectively, lower than those of Chinese SG, STH, and LJ (134, 269, and 148 mu g/ml, respectively). An antiallergic drug, disodium cromoglycate (DSCG), had an IC(50)=39 mu g/ml, and a natural inhibitor
of hyaluronidase, catechin, had an IC(50)=20 mu g/ml. The IC(50) of ST extract was found similar to that of catechin (21 vs 20 mu g/ml) and lower than that of DSCG (21 vs 39 mu g/ml). This suggests that ST is a potent inhibitor of hyaluronidase, indicating a promising future development of natural Tariquidar antiallergic medicines or functional foods.”
“This study evaluated cleaning of the dentinal
wall after removal of different calcium hydroxide pastes. Sixty-eight single-rooted teeth were prepared using the step-back technique and randomly divided into 4 groups according to medication used: Ca(OH)2 with 0.2% chlorhexidine solution (Group 1), Ca(OH)2 with propylene glycol (Group 2), Ca(OH)2 with antibiotic paste (ciprofloxacin, metronidazole) and distilled water (Group 3), and Ca(OH)2 with antibiotic paste and propylene glycol (Group 4). The samples were stored at 37 degrees C and 100% relative humidity for 21 days. The medicaments were removed using 5 mL 1% NaOCl, instrumentation with master apical file, 5 mL 1% NaOCl, patency with the K-file #10, ultrasonic instrumentation, and 10 mL 17% EDTA-T. The specimens were analyzed using scanning electron microscopy and chemical analysis. The Kruskal-Wallis (alpha = 5%) test Selleck Bafilomycin A1 showed that were no differences between the experimental groups when comparing Ca(OH)2 removal (P = .0951). The chi-square test (alpha = 5%) indicated a predominance of Ca(OH) 2 obstructing dental tubules in all groups. On the basis of the methodology applied, it was concluded that the apical dentine surface remained equally covered by Ca(OH) 2, regardless of the vehicle used. (Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2011; 111: 260-264)”
“Gastroesophageal reflux is a common condition affecting many patients in different parts of the world.