Abbreviations: LDL-C: Low-density-lipoprotein cholesterol; HDL-C: High-density lipoprotein cholesterol; BPH: Benign prostatic hypertrophy; PARP: ADP ribose polymerase; H2O2: Hydrogen peroxide; X: Xanthine; XO: Xanthine oxidase; BDNF: Brain-derived neurotrophic factor; pCREB: Phosphorylated cAMP response element binding-protein; pERK: Phosphorylated extracellular signal-regulated kinase; NO: Nit...

The proposed method determines the activity of cholesterol esterase (CEH) and takes advantage of its ability to catalyze the hydrolysis of cholesterol esters naturally present in human serum. The assay is based on Allain's method of spectrophotometric determination of cholesterol by means of cholesterol oxidase, peroxidase, but using 3,5-dichloro-dihydroxybenzenesulfonic acid (DHBS) as phenolic...

Non-esterified cholesterol was determined enzymatically with the cholesterol oxidase-peroxidase reaction using phenol and 4-aminophenazone as chromogens. This assay as done in the supernatant containing the lipoprotein-X. Other serum lipoproteins were removed by precipitation with heparin and zinc acetate followed by centrifugation. No standardization was required, the lipoprotein-X concentrati...

Smith, R. D., E. Babiychuk, K. Noble, A. Draeger, and Susan Wray. Increased cholesterol decreases uterine activity: functional effects of cholesterol alteration in pregnant rat myometrium. Am J Physiol Cell Physiol 288: C982–C988, 2005. First published December 22, 2004; doi:10.1152/ajpcell.00120.2004.—Uterine quiescence is essential for successful pregnancy. Cholesterol and triglycerides are m...

A rapid and accurate method is described for the assay of cholesterol ester hydrolase (CEH) activity. Aliquots of the enzyme-substrate incubation mixture are extracted into isopropanol. The free cholesterol concentration in each extract is determined enzymatically using a single aqueous reagent containing cholesterol oxidase and peroxidase. The free cholesterol remaining after the cholesterol e...

Background: Dyslipidemia constitutes a serious public health concern globally. It has been established that excessive fructose intake results in dyslipidemia; however, whether dexamethasone aggravates or alleviates fructose-induced dyslipidemia is unknown. Thus, we examined the effects of dexamethasone on dyslipidemia and hyperuricemia in high fructose-taking Wister rats. Methods: Twenty male...

The cholesterol oxidase-catalyzed oxidation of cholesterol in native low density (LDL) and high density lipoproteins (HDL3) as well as in monolayers prepared from surface lipids of these particles, has been examined. The objective of the study was to compare the oxidizability of cholesterol, and to examine the effects of lipid packing on oxidation rates. When [3H]cholesterol-labeled lipoprotein...

OBJECTIVE Angiotensin II contributes to atherogenesis, mainly through oxidative stress and inflammation. Recent data suggest that aldosterone is implicated in some effects of angiotensin II. We hypothesized that aldosterone could directly contribute to oxidative stress and atherosclerotic lesion formation. METHODS AND RESULTS Male apolipoprotein E-deficient mice 6 weeks of age were placed on ...

A reusable and mediator-free cholesterol biosensor based on cholesterol oxidase (ChOx) was fabricated based on self-assembled monolayer (SAM) of thioglycolic acid (TGA) (covalent enzyme immobilization by dropping method) using bio-chips. Cholesterol was detected with modified bio-chip (Gold/Thioglycolic-acid/Cholesterol-oxidase i.e., Au/TGA/ChOx) by reliable cyclic voltammetric (CV) technique a...

The preparation of a cholesterol amperometric biosensor using a platinized Pt electrode as a support for the electropolymerization of a polypyrrole film, in which cholesterol oxidase and ferrocene monocarboxylic acid (electron-transfer mediator) were co-entrapped, is described. All the biosensor preparation steps (platinization and electropolymerization) and the cholesterol determination take p...