The intravascular metabolism of the cholesteryl ester moiety of rat plasma LDL, HDL1, and HDL2 was determined in intact male rats. Biosynthetically labeled lipoproteins were prepared by zonal ultracentrifugation from the plasma of rats injected with [3H]cholesterol. The lipoproteins were concentrated by vacuum ultrafiltration as other procedures were found to alter the biological properties of ...

background: the role of oxidative stress in endosulfan-induced reproductive toxicity has been implicated. this study was performed to evaluate the possible protective effect of vitamins e and c, against endosulfan-induced reproductive toxicity in rats. methods: fifty adult male sprague–dawley rats were randomly divided into five groups (n=10 each). the groups included a control receiving vehicl...

Quercetin-3-glucuronide (Q3GA), the main phase II metabolite of quercetin (Q) in human plasma, is considered to be a more stable form Q for transport with bloodstream tissues, where it can potentially deconjugated by β-glucuronidase (β-Gluc) aglycone, which easily enters brain. This study evaluates effect lipopolysaccharide (LPS)-induced acute inflammation on β-Gluc gene expression choroid plex...

A simple and selective liquid chromatography tandem with mass spectrometry (LC-MS/ MS) method for quantification of lobetyolin in rat plasma was developed validated. Chromatographic separation achieved on a Thermo ODS C18 reversed-phase column using 0.1% aqueous formic acid-methanol (50:50, v/v) an isocratic elution mode at flow rate 0.4 mL.min-1. LC/MS performance done positive ion ESI the MS/...

1. The foetal-specific post-albumin of rat plasma was purified by electrophoresis on a Pevicon block. 2. The sedimentation coefficient, diffusion coefficient and molecular weight were determined for this protein and found to be similar to those of adult rat plasma albumin. 3. Foetal post-albumin and adult albumin were compared immunologically and shown, with rabbit antisera, to share no antigen...

Many of our investigations involving adrenal physiology have been carried out in the rat (14). Since corticosterone is the preponderant adrenal steroid found in rat plasma, l it became essential to develop a rapid, valid method for its determination. The Silber-Porter method (5) is inadequate for studies in the rat because it is neither sensitive nor specific enough. The method of Sweat (B), al...

1. The plasma of guinea pigs treated by injections of rat sarcoma exhibits a toxic action in tissue culture preparations on the cells of both rat sarcoma and rat embryo skin. Similarly, the plasma of guinea pigs immunized by injections of rat embryo skin is toxic for cells of both types. 2. Injection of rat blood immunizes against both sarcoma and embryo skin, although not so strongly as inject...

Fetuins are among the major plasma proteins, yet their biological role has remained elusive. Here we report the molecular cloning of rat fetuin and the sequence analysis of a full-length clone, RF619 of 1456 bp with an open reading frame of 1056 bp encoding 352 amino acid residues. The coding part of RF619 was identical with the cDNA sequence of the natural inhibitor of the insulin receptor tyr...

1. Antibodies were raised in rabbits against pure rat angiotensinogen. The antisera obtained were highly specific for rat angiotensinogen and did not bind hog, dog, rabbit, monkey or human angiotensinogen. They did not cross-react with angiotensin I, angiotensin II or synthetic hog tetradecapeptide renin substrate. However, rat des-angiotensin I-angiotensinogen cross-reacted 100% with the angio...

Activities of cholesteryl ester transfer protein (CETP) and phospholipid transfer protein (PLTP) were measured in plasma of four vertebrate species: man, rabbit, pig, and rat. The activities were measured in the absence and presence of antibodies raised against purified human CETP. PLTP activities were present in all four species with highest values in pig (11.7 +/- 1.2 U/ml) and human plasma (...