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in urine
Direct determination of reserpine in urine using excitation-emission fluorescence combined with three-way chemometric calibratio
      
The concentration of reserpine in urine was directly and quantitatively measured by using the excitation-emission fluorescence (EEM) combined with three-way calibration methodologies.
      
It has proved that the three-way calibration methodologies based on ATLD and SWATLD can be feasible to directly quantify the medical content of reserpine in urine.
      
Diurnal fluctuations of protein contents and the pH dependence of β2-microglobulin stability in urine
      
The goal of this research was to measure in vitro the inhibitory constants of the antioxidants ascorbic and uric acid in urine, with lucigenin enhanced chemiluminescence (CL) in Fenton's system.
      
Maximum CL emission is registered in urine containing H2O2 (5·10-4 M), Fe2+ (5·10-5 M), EDTA (5·10-5 M), and chemical enhancer lucigenin (10-4 M) at pH 5.5 and 36°C.
      
The constants of antioxidant inhibition in urine were measured at concentrations 10-3 and 10-4 M: for ascorbic acid, 5.92 ± 0.04 and 24.05 ± 1.82 μmol·sec-1; for uric acid, 1.60 ± 0.02 and 21.45 ± 0.97 μmol·sec-1, respectively.
      
Bound forms of metabolites and the initial medicinal preparations excreted as complexes with glucuronic acid and other acids were also determined in urine.
      
Electrothermal Atomic Absorption Determination of Trace Lead and Cadmium in Urine after Preconcentration and Separation from the
      
The developed procedure was applied to the determination of magnesium in urine.
      
Determination of zopiclone in urine by gas chromatography-mass spectrometry
      
A simple and robust HPLC method with electrochemical detection was developed for the quantitative determination of 8-hydroxy-2'-deoxyguanosine (8-OHdG), a DNA damage product excreted in urine.
      
This newly-proposed method was successfully used to detect 8-OHdG in urine samples.
      
The decrease was aggravated with prolongation of carbon disulphide intoxication due to loss of appetite, formation of chelating compounds with carbon disulphide metabolites and increased loss of copper in urine.
      
Recent findings indicate that hepatic depletion of vitamin A is accompanied by an increase in serum and renal vitamin A content and enhanced excretion of vitamin A metabolites in urine and feces.
      
In urine, the main metabolites observed were the 6H-dibenzo[b,d]pyran-6-one derivatives, as aglycones or glucuronides.
      
Conclusion: As only 3-6 % of the ingested punicalagin was detected as such or as metabolites in urine and faeces, the majority of this ellagitannin has to be converted to undetectable metabolites (i.
      
When atrial pressure is increased (and the atria distended) atrial receptor discharge is increased leading to an increase in urine flow and, depending upon the experimental condition, a less consistent increase in sodium excretion.
      
Control renal excretory function did not differ between the two groups, and both groups had similar increases in urine flow, sodium excretion, osmolar clearance, free water clearance and renal plasma flow after volume expansion.
      
This was associated with significant and paradoxicalincreases in urine flow (+35%), sodium excretion (+63%), osmolar clearance (+32%), and free water clearance (+33%).
      
 

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