Faqja 1 nga 255 rezultatet
Spinach (Spinacia oleracea) chloroplasts were aged at 4 degrees C under red light and in the dark. The electron transport activity was monitored together with the thylakoid polypeptide patterns in sodium dodecyl sulfate-polyacrylamide gel electrophoresis. The light-induced decay of photosystem II
Renal albumin handling is of major interest because albuminuria is an important risk factor for reno-cardiovascular diseases. In this issue a challenging study attempts to shift the paradigm of very low fractional albumin filtration and degradation in proximal tubule cells. The conclusions are of
Twenty five patients with primary biliary cirrhosis were studied for vitamin A state. In nine patients found to have low circulating vitamin A concentrations no abnormality was found on electro-oculography or in dark adaptation. A positive correlation was found between retinol binding protein and
OBJECTIVE
To compare continuous and intermittent light exposure in the presence of bilirubin with respect to cellular damage. Furthermore, it was of interest to characterize the nature of cellular toxicity of bilirubin in the dark.
METHODS
A murine lymphoma cell line, L5178Y-R (LY-R), was exposed to
A randomized, double-blind, controlled study was conducted to determine whether the consumption of leafy vegetables by preschool children would enhance their serum vitamin A concentration to acceptable levels. Preschool children (n = 519; 2.5-6 y) in Saboba, northern Ghana, were randomly assigned to
An acyl-CoA hydrolase from dark-grown Euglena gracilis Z was purified 700-fold by subjecting the 105,000g supernatant of the cell-free extract to (NH4)2SO4 precipitation, acid precipitation, calcium phosphate gel treatment, gel filtration on Sephadex G-100, and chromatography on QAE-Sephadex,
Determinations of plant or algal cell density (cell mass divided by volume) have rarely accounted for the extracellular matrix or shrinkage during isolation. Three techniques were used to indirectly estimate the density of intact apical cells from protonemata of the moss Ceratodon purpureus. First,
Development of sensitive methods for the determination of E. coli bacteria contamination in water distribution systems is of paramount importance to ensure the microbial safety of drinking water. This work presents a new sensing platform enabling the fast detection of bacteria in field
In veterinary medicine, assay performance is often affected by the lack of species-specific diagnostic tools. Reliable biomarkers might be identified by investigating biological fluids of the species of interest, but protein sequence databases are often incomplete and human-specific devices for
We elucidated associations between metabolic disorders and the environmental light-dark (LD) cycle that entrains the circadian clock located in the suprachiasmatic nucleus of mammals. Mice were fed with a high-fat/high-sucrose diet for eight weeks under a normal 12h light-12h dark cycle (LD 12:12)
Melatonin contents in eyed-stage embryos of rainbow trout (Oncorhynchus mykiss) were measured by a newly developed, highly sensitive, and nonisotopic immunoassay method: time-resolved fluoroimmunoassay (TR-FIA). The melatonin-bovine serum albumin (BSA) conjugate was immobilized by physical
Propranolol binding to rat serum samples was studied after 7 days of phenobarbital (PB) administration to induce alpha-1-acid glycoprotein (AAG). In male Sprague-Dawley rats, serum AAG concentrations and the bound/free propranolol ratio (B/F) were increased slightly after enzyme-inducing drug
1. Both galactolipase treatment of tomato chloroplasts and the cold and dark storage of leaves induce a large degradation of chloroplast monogalactosyl diacylglycerol and digalactosyl diacylglycerol as well as an accumulatwon of free fatty acids accompanied by the inhibition of Hill reaction
After i.v. injection of Evans blue solution (EB), the postmortal diffusion of plasma albumin and its relationship to the postmortal interval (0 to 48 h) were studied in rat brain. A decrease in intravascular plasma albumin with increasing evidence of the same fraction in relation to the length of
Bovine serum albumin (BSA) was exposed to hydroxyl radicals generated by the Fenton reaction. The reaction of the BSA solution with hydroxyl radicals resulted in a colour change from clear transparent to dark brown. The reaction was followed spectrophometrically. It was observed that during the