results under the above chromatography condition, biuret compound (peqb) and the internal standard were detected at 4.5 and 13.5 minutes, respectively. limit of quantitation of the peqb was 0.1 µg/ml. accuracy of the method over the concentration range of 0.1-100 µg/ml was between 88-109%. inter- and intraday precisions were 4-19% and 6-8%, respectively. a good relationship in the form of a pow...

Objective(s): To investigate the effects of paeoniflorin (PEF) on the hypothalamic-pituitary-adrenal (HPA) axis feedback function of post-traumatic stress disorder (PTSD). cSingle-prolonged stress (SPS) was used to establish a PTSD-like rat model. The contents of plasma corticosterone (CORT), adrenocorticotropin hormone (ACTH) and cortic...

it has been hypothesized that elevated plasma homocysteine (hcy) plays a role in the pathogenesis of alzheimer’s disease (ad) and age-related cognitive decline. the mechanism of hcy neurotoxicity in the brain is controversial as well hcy is a ligand of nmda receptor. memantine, an uncompetitive antagonist of n-methyl-d-aspartate (nmda) receptors approved for the treatment of moderate to severe ...

The disc electrophoresis of lipoproteins of unfractionated rat plasma is described. The plasma was prestained with Sudan black B and electrophoretically separated at polyacrylamide gel concentrations of 7.5, 5, and 3.75%. At least four lipoprotein components were observed, and an additional 2-3 components in the main gel and 2-5 components in the spacer gel possibly were present. Densitometry o...

Abstract A reliable LC-MS/MS method for the determination of five bioactive constituents (bilobalide, BLL; ginkgolide A, GLA; B, GLB; C, GLC; rutin) Ginkgo biloba leaf extracts (GBE) in rat plasma was established, fully validated and applied to an intragastric pharmacokinetic study a preparation GBE rat. Samples were extracted with ethyl acetate. C18 column selected as analytical this method. M...

Circulating digitalislike compounds have been proposed to be involved in some Na+-dependent types of experimental hypertension and in human essential hypertension. The level of circulating Na+-K+ pump inhibitor(s) was investigated in the spontaneously hypertensive rat of the Okamoto strain (SHR), its normotensive control, Wistar-Kyoto rat (WKY), and the regular Wistar rat using the following cr...

background: s-methyl cysteine (smc) is a hydrophilic cysteine-containing compound naturally found in garlic and onion. the purpose of the present study was to investigate the protective effect of smc on oxidative stress, inflammation and insulin resistance in an experiment of metabolic syndrome. methods: male wistar rats were divided into five groups (6 rats in each group), namely; control, con...

Objective: A simple, precise, accurate, robust, and reliable RP-HPLC technique for detecting cilnidipine in Wistar rat plasma was developed validated. Methods: The chromatographic separation performed using the C-18 reverse phase column Oyster BDS Premium C18 (4.6 × 150 mm, 5 µm particle size). flow rate set to 1.2 ml/min, chromatogram recorded at 240 nm. proposed method validated compliance wi...