Protein profile study of clinical samples of ovarian cancer using high-performance liquid chromatography-laser induced fluorescence (HPLC-LIF)

2006 ◽  
Author(s):  
Sameer Kumar Singh ◽  
Remila L. Martis ◽  
Sujatha ◽  
Rani A. Bhat ◽  
Pralhad Kushtagi ◽  
...  
Keyword(s):  
Ovarian Cancer ◽  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
High Performance ◽  
Protein Profile ◽  
Laser Induced Fluorescence ◽  
Clinical Samples ◽  
Profile Study

scholarly journals PHARMACOKINETIC PROFILE AND INCURRED ESOMEPRAZOLE SAMPLE STABILITY IN PLASMA USING HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY - PHOTODIODE ARRAY

2019 ◽  
pp. 214-219
Author(s):  
YAHDIANA HARAHAP ◽  
AHMAD FARIS ◽  
SUNARSIH .
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
High Performance ◽  
Pharmacokinetic Profile ◽  
Clinical Samples ◽  
Plasma Samples ◽  
Elimination Phase ◽  
Sample Stability ◽  
Photodiode Array

Objective: Esomeprazole (ESO) is one of the proton-pump inhibitors and is used to treat gastroesophageal reflux. It is sensitive to low pH, heat,moisture, and oxidation, which often means that ESO in clinical samples is degraded at the time of storage, affecting analysis results. This study aimedto analyze the in vivo stability of ESO in subjects’ plasma samples by testing the incurred sample stability (ISS) of ESO in plasma following 7, 14, and28 days of storage at two concentrations close to Cmax and one concentration in the elimination phase.Methods: Samples were analyzed using high-performance liquid chromatography with a C18 column with detection at 300 nm using a photodiodearray detector. Lansoprazole was used as an internal standard.Results: The ESO pharmacokinetics profile in the plasma samples yielded the values of Cmax 704.57–1425.85 ng/mL; tmax is 2.25 h; and AUC0-t is2444 ng.h/mL. ISS testing of plasma samples values were 6.50%, 5.73%, and 4.57% on first Cmax concentration; 3.55%, 4.84%, and 3.68% on 2nd Cmaxconcentration; and 4.04%, 4.80%, and 4.98% on elimination phase concentration.Conclusion: ISS testing results of plasma samples from six healthy subjects who were administered doses of 40 mg of ESO stored for 28 days showedthat it fulfilled the acceptance criteria (<20%) of the 2011 EMEA Bioanalytical Guidelines with a %diff value in all incurred samples of 6.5%.

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