Quinoxalines Derived from Disaccharides withO-Phenylenediamine under Weakly Acidic Reflux Conditions
نویسندگان
چکیده
منابع مشابه
Systematic review: role of acid, weakly acidic and weakly alkaline reflux in gastro-oesophageal reflux disease.
BACKGROUND The importance of weakly acidic and weakly alkaline reflux in gastro-oesophageal reflux disease (GERD) is gaining recognition. AIM To quantify the proportions of reflux episodes that are acidic (pH <4), weakly acidic (pH 4-7) and weakly alkaline (pH >7) in adult patients with GERD, and to evaluate their correlation with symptoms. METHODS Studies were identified by systematic PubM...
متن کاملCapillary electrophoresis of o-phenylenediamine derivatives (quinoxalines) of dicarbonyl sugars
Dicarbonyl sugars were separated by capillary electrophoresis as o-phenylenediamine derivatives (quinoxalines). Tetrabutylammonium bromide was used as a modifier; n-arabino-2-hexosulose (n-glucosone), D-lyxo-2-hexostdose (D-gdaCtOSOnC), 7-deoxy-L-galacto-2-hexosulose and 5-hydroxy-2,3dioxohexanal served as standards. The separation procedure was optimized with respect to pH, buffer and solute c...
متن کاملEffects of anti-reflux surgery on weakly acidic reflux and belching.
BACKGROUND Laparoscopic Nissen fundoplication (LNF) is the most frequently performed operation for gastro-oesophageal reflux disease (GORD). However, 12% of the patients have persistent reflux symptoms and 19% develop gas-related symptoms after LNF. Weakly acidic reflux and inability to belch have been alleged to cause these symptoms, respectively. The effect of LNF on weakly acidic reflux and ...
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BACKGROUND/AIMS Available data about reflux patterns and symptom determinants in the gastroesophageal reflux disease (GERD) subtypes off proton pump inhibitor (PPI) therapy are lacking. We aimed to evaluate reflux patterns and determinants of symptom perception in patients with GERD off PPI therapy by impedance-pH monitoring. METHODS We retrospectively reviewed the impedance-pH data in patien...
متن کاملFluoride release from fluoride varnishes under acidic conditions.
OBJECTIVE The aim was to investigate the in vitro fluoride release from fluoride varnishes under acidic conditions. STUDY DESIGN Poly(methyl methacrylate) blocks (Perspex, n=3 per group) were painted with 80 ± 5 mg fluoride varnish (n=10) and placed into artificial saliva for 30 min. Then, blocks were placed into either 1% citric acid (pH 2.27) or 0.3% citric acid (pH 3.75) solutions (n=3 per...
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ژورنال
عنوان ژورنال: Agricultural and Biological Chemistry
سال: 1985
ISSN: 0002-1369
DOI: 10.1080/00021369.1985.10867231