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Zheng Qiao et al.
Journal of chromatography. A, 1393, 18-25 (2015-03-31)
In this present study, magnetic Fe3O4@SiO2 nanoparticles (MNPs) functionalized with octadecyl groups (Fe3O4@SiO2-C18 NPs) were synthesized, characterized and employed, for the first time, as powerful nanosorbent to extract endogenous volatile organic metabolites (EVOMs) namely, hexanal, heptanal, decanal, benzaldehyde, 4-heptanone, 5-methyl-2-furfural
Petr Tůma et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 821(1), 53-59 (2005-05-19)
Capillary electrophoretic (CE) method was developed for the determination of urinary 3-methylhistidine (3MH) and 1-methylhistidine (1MH) indicating the extent of degradation of skeletal muscle proteins and thereby the state of human health. 3MH, 1MH and histidine can be separated in
Keitaro Yokoyama et al.
Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association, 17(6), 1032-1036 (2002-05-29)
Pteridine metabolism is impaired in the uraemic state. This may affect cardiovascular function and contribute to malnutrition. We wished to clarify further the impact of impaired pteridine metabolism. Using the HPLC method, the plasma concentrations of endogenous pteridines were determined
Mosciano, G.
Perfumer & Flavorist, 30, 57-57 (2005)
M Y Khuhawar et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 873(1), 15-19 (2008-09-02)
Capillary gas chromatographic (GC) determination of methylglyoxal (MGo) was developed on the basis of precolumn derivatization with 1,2-diaminopropane (DAP) at pH 3. The elution was carried out on an HP-5 (30 m x 0.32 mm i.d.) connected with FID. The
Janez Stupar et al.
Metabolism: clinical and experimental, 56(1), 94-104 (2006-12-13)
Longitudinal hair chromium (H-Cr) profiles in a group of patients with type 2 diabetes mellitus (n = 59; age, 62 +/- 9 years) and healthy elderly (control) subjects (n = 49; age, 59 +/- 10 years) matched by age and
Marcus A Bain et al.
Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association, 21(5), 1300-1304 (2006-01-13)
Trimethylamine (TMA) is a short-chain tertiary aliphatic amine that is derived from the diet either directly from the consumption of foods high in TMA or by the intake of food high in precursors to TMA, such as trimethylamine-N-oxide (TMNO), choline
H M Liebich et al.
Journal of chromatography, 239, 343-349 (1982-04-30)
The endogenous aliphatic alcohols ethanol, n-propanol, n-butanol, isobutanol and isopentanol in serum and urine were measured by gas chromatography-mass fragmentography. Whereas for the higher-molecular-weight alcohols extraction with dichloromethane is used, ethanol is determined by direct injection of serum and urine.
Thanh M Nguyen et al.
Pediatric diabetes, 8(4), 214-219 (2007-07-31)
Postprandial hyperglycemia associated with diabetes is a risk factor for cardiovascular disease. Currently, glycated hemoglobin A(1c) (HgbA(1c)) and glycated protein fructosamine are not sensitive markers for acute and short-term hyperglycemia. 1,5-Anhydroglucitol (1,5-AG) (Glycomark; Tomen America, New York, NY, USA) is
Moritz Butscheid et al.
Naunyn-Schmiedeberg's archives of pharmacology, 375(6), 401-406 (2007-06-16)
Advanced glycation end products (AGEs), e.g., carboxymethyllysine (CML) or imidazolone are involved in several age-related disorders. Concerning their accumulation, the importance of hepatic and renal function is controversially discussed. To test whether impairment of hepatic or renal function will affect
Takahiro Kawasaki et al.
Diabetes care, 25(2), 353-357 (2002-01-30)
To investigate fructose metabolic changes in patients with diabetes. Serum and urinary fructose concentrations were determined in healthy subjects (n = 23) and in nondiabetic (n = 23) and diabetic patients (n = 26). Fructose was measured using our newly
Jaime Guevara-Aguirre et al.
Diabetes technology & therapeutics, 9(4), 372-376 (2007-08-21)
The aim of this study was to compare the glucose pharmacodynamics after oral spray insulin (Oral-lyn , Generex Biotechnology, Toronto, ON, Canada) and subcutaneous (sc) injection of regular insulin in 10 subjects with type 1 diabetes mellitus (T1DM). Basal therapy
R A Burke et al.
Advances in peritoneal dialysis. Conference on Peritoneal Dialysis, 14, 120-123 (2000-01-29)
The presence of mixed disaccharides (maltose and isomaltose) in plasma from uremic patients has been previously investigated using gel-permeation chromatography. However, this method is unable to separate maltose (linked alpha-1-4) from isomaltose (linked alpha-1-6). We describe an alternative method using
J R Bales et al.
Clinical chemistry, 30(3), 426-432 (1984-03-01)
Numerous low-Mr metabolites--including creatinine, citrate, hippurate, glucose, ketone bodies, and various amino acids--have been identified in 400- and 500-MHz proton nuclear magnetic resonance (1H NMR) spectra of intact human urine. The presence of many of these was related to the
D O McGregor et al.
Kidney international, 59(6), 2267-2272 (2001-05-31)
Hyperhomocysteinemia is a risk factor for atherosclerosis that is common in chronic renal failure (CRF), but its cause is unknown. Homocysteine metabolism is linked to betaine-homocysteine methyl transferase (BHMT), a zinc metalloenzyme that converts glycine betaine (GB) to N,N dimethylglycine
Yu Song et al.
The Journal of chemical physics, 142(22), 224306-224306 (2015-06-15)
Ultraviolet (UV) photodissociation dynamics of jet-cooled n-propyl (n-C3H7) radical via the 3s Rydberg state and i-propyl (i-C3H7) radical via the 3p Rydberg states are studied in the photolysis wavelength region of 230-260 nm using high-n Rydberg atom time-of-flight and resonance
A C McLellan et al.
Analytical biochemistry, 206(1), 12-16 (1992-10-01)
A fluorimetric assay for D-lactate in human blood samples was developed using an endpoint enzymatic assay with D-lactate dehydrogenase from Staphylococcus epidermidis. The intrabatch and interbatch coefficients of variance were 8.7% (n = 4) and 16.6% (n = 4), respectively.
D S Raj et al.
Blood purification, 18(2), 97-102 (2000-06-06)
The purpose of this study was to examine the effect of nocturnal hemodialysis (NHD) on serum amino acid (AA) profile. In a cross-over trial, we studied the AA profile in 11 patients who were switched from conventional hemodialysis to NHD.
G Blomqvist et al.
American journal of physiology. Endocrinology and metabolism, 283(1), E20-E28 (2002-06-18)
Using R-beta-[1-(11)C]hydroxybutyrate and positron emission tomography, we studied the effect of acute hyperketonemia (range 0.7-1.7 micromol/ml) on cerebral ketone body utilization in six nondiabetic subjects and six insulin-dependent diabetes mellitus (IDDM) patients with average metabolic control (HbA(1c) = 8.1 +/-
Shinichiro Mine et al.
Endocrine journal, 53(6), 761-766 (2006-09-13)
Accumulation of hyaluronan (HA) around smooth muscle cells in lesions of atherosclerosis in diabetic patients suggests that this protein plays an important role in diabetic angiopathy. The aim of this study was to determine the correlation between serum HA concentrations
A Avogaro et al.
Journal of lipid research, 30(11), 1811-1817 (1989-11-01)
In this study we employed a capillary gas-liquid chromatographic-mass spectrometric (GLC-MS) method to measure the plasma concentrations of 3-hydroxybutyrate (3-OHB) and 3-hydroxyisobutyrate (3-OHIB) in overnight fasted diabetic subjects and in normal subjects. Plasma contents of 3-hydroxybutyrate measured in this fashion
Catarina L Silva et al.
Talanta, 89, 360-368 (2012-01-31)
A sensitive assay to identify volatile organic metabolites (VOMs) as biomarkers that can accurately diagnose the onset of breast cancer using non-invasively collected clinical specimens is ideal for early detection. Therefore the aim of this study was to establish the
A V Greco et al.
Nutrition (Burbank, Los Angeles County, Calif.), 14(4), 351-357 (1998-05-20)
Dodecanedioic acid (C12) is an even-numbered dicarboxylic acid (DA). Dicarboxylic acids are water-soluble substances with a metabolic pathway intermediate to those of lipids and carbohydrates. Previous studies showed that contrary to other DAs, very low amounts of C12 are lost
D S Gill et al.
Journal of clinical pathology, 44(3), 243-245 (1991-03-01)
Plasma histamine concentrations were measured using a commercially available monoclonal antibody radioimmunoassay in 38 patients with nephrotic syndrome, end stage renal failure, those receiving haemodialysis, and those receiving continuous ambulatory peritoneal dialysis to determine whether histamine may mediate damage to
Chih-Kuang Chuang et al.
Clinica chimica acta; international journal of clinical chemistry, 364(1-2), 209-216 (2005-08-10)
The high prevalence of protein-energy malnutrition is a critical issue for patients with end stage renal disease (ESRD) on hemodialysis (HD) or continuous ambulatory peritoneal dialysis (CAPD). Levels of plasma and intracellular amino acids are significant indicators of protein metabolism
C L Hoppel et al.
The American journal of physiology, 243(2), E168-E172 (1982-08-01)
The urinary excretion of acetylcarnitine was studied in patients with diabetic ketosis before and during insulin therapy and in normal-weight and obese subjects during fasting. In the diabetic ketotic patients, acetylcarnitine represented 61% of the total acylcarnitine excretion. During the
H G Wahl et al.
Journal of chromatography. A, 847(1-2), 117-125 (1999-08-04)
A multipurpose sampler (Gerstel MPS), designed for liquid large volume, gaseous and headspace samples was used for the GC-MS analysis of organic volatiles in human urine. Headspace sampling with a volume-, temperature- and speed-controlled gas-tight syringe was combined with a
E D Ehrenpreis et al.
Journal of clinical gastroenterology, 33(1), 36-40 (2001-06-22)
D-Xylose absorption testing is a simple, low-cost method of screening for small intestinal malabsorption. The optimum method to measure D-xylose absorption (serum vs. urine testing) is uncertain. We present a method of improving the accuracy of D-xylose testing. Fifty-one consecutive
Mae Sheikh-Ali et al.
Diabetes care, 31(4), 643-647 (2008-01-11)
Current criteria for the diagnosis of diabetic ketoacidosis (DKA) are limited by their nonspecificity (serum bicarbonate [HCO(3)] and pH) and qualitative nature (the presence of ketonemia/ketonuria). The present study was undertaken to determine whether quantitative measurement of a ketone body
V Walker et al.
Clinica chimica acta; international journal of clinical chemistry, 306(1-2), 51-61 (2001-04-03)
4-Heptanone is a common volatile constituent of human urine and is of unknown origin. We hypothesised that it arises from in vivo beta-oxidation of 2-ethylhexanoic acid (EHA) from plasticisers, similar to formation of 3-heptanone from valproic acid. We investigated urine
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