Urine p-aminophenol (PAP) concentration serves as a biological marker for occupational exposures to aniline. We report the development of a rapid, simple spectrophotometric method for quantification of urine PAP concentration using a chemical autoanalyzer (Olympus Reply). The method involves oxidative coupling of PAP with an aromatic compound, xylenol, that contains an electron-donating group, ...

Drug abuse is a serious problem causing health, economical and psycho-social negative outcomes. Methadone is commonly used drug for management of drug addiction. Exhaled breath condensate (EBC) is a promising non-invasive biological sample which attracted more attention in recent years. This work aimed to extend the applicability of a developed preconcentration – liquid chromatographic method f...

Background: Hydrazones belonging to azomethine class of compounds have attracted the attention of many chemists owing to their wide spectrum of pharmacological activity profile with structural flexibility and ligating behavior. Objectives: We aimed to synthesize a potential ligand containing both, isonicotinoylhydrazide and 3-ethoxy-2-hydroxybenzilidine moieties, linked through azomethine group...

The double sampling method for measuring gastric volumes is analysed mathematically. It is shown to cause magnification of randomly occurring analytical errors in dye concentration. The errors which arise in calculated gastric volume depend on extent of analytical error, concentration of dye initially placed in the stomach, repetition of analysis cycle, and ratio of volume of added dye to gastr...

Injection of sodium urate or calcium pyrophosphate crystals into the stifle joints of anesthetized dogs almost invariably induced an acute exudative response. This response was quantified by serial measurements of intra-articular pressure, pH and leukocyte concentration. Pressure rose progressively and reflected intra-articular volume increase. The hydrogen ion concentration increased as the re...

background periodontitis is a major problem that affects a large number of patients in the society. various treatment alternatives have been proposed to control this pathologic condition. streptococcus sanguis is one of the countless pathogens involved in periodontitis. objectives the current study aimed to assess the efficacy of pineapple extract per se and in synergy with vancomycin on the gr...

background: metronidazole is drug of choice recommended by who for treatment of trichomoniasis, however, some reports claims drug resistance in trichomonas vaginalis isolates recently. the objective of this study was to determine the minimum lethal concentration (mlc) of metronidazole in resistant and sensitive strains, as well as genetic patterns of these stains by pcr method. methods : from f...