Stran 1 iz 79 rezultatov
The galactose elimination kinetics was examined in five perfused pig livers of 1.2 kg during hypoxia induced by administration of 2, 4 or 7% oxygen in the oxygenator instead of 20% as used in nine control experiments, previously published. Galactose was given as four to five successive constant
Age-related hearing loss (ARHL) is the most common sensory disorder among the elderly, associated with aging and auditory hair cell death due to oxidative-stress-induced mitochondrial dysfunction. Although transgenic mice and long-term aging induction cultures have been used to study ARHL, there are
2-Nitroimidazole was silylated using hexaethyldisilazane and then reacted with 1-O-acetyl derivatives of D-arabinose, D-ribose, and D-galactose in acetonitrile at mild temperatures (-20 °C to rt), catalyzed by triethylsilyl triflate (Vorbrüggen conditions). The α-anomer was formed in the former case
Crude water-soluble polysaccharides (BRP) were extracted from the root of Brassica rapa L. using boiling-water. The polysaccharides were successively purified by chromatography on DEAE-cellulose and Sephadex G-100 column, giving three major polysaccharide fractions termed BRP1-1, BRP2-1, BRP3-1. The
Feeding galactose to rats induces nerve conduction abnormalities, increased levels of nerve galactitol, endoneurial edema, elevated pressure and hypoxia of endoneurial fluid, and pathological abnormalities of nerve fibers. To investigate the cellular mechanisms of the fiber lesions and their
Patients suffering from chronic obstructive airway disease often have arterial hypoxemia, which is more or less severe. If hypoxemia deteriorates the function of the liver is still unknown. The aim of this study was to determine, if a mostly oxygen dependent process of liver metabolism (galactose
The effects of hypoxaemia and ischaemia were compared in the perfused pig liver. Decreased hepatic oxygen uptake, galactose elimination, ATP phosphorylation and increased lactate output occurred when the oxygen supply was diminished below 55% of the mean of controls. Below the control limits for
Rhizoma Dioscoreae polysaccharides (RDPS) are the primary active ingredient of Rhizoma Dioscoreae, which is a traditional Chinese medicine. RDPS have previously been shown to scavenge reactive oxygen species, and protect against D-galactose-induced mimetic aging. The present study aimed to
The protective effect of fructose with regard to hypoxia-induced cell injury in overnight cold preserved hepatocytes (20 hr at 4 degrees C) was investigated. The addition of fructose (at 10 and 20 mM) resulted in an improved survival of hepatocytes during their normothermic (37 degrees C)
Unilateral cerebral hypoxia-oligemia was produced in anesthetized mice using carotid artery occlusion combined with systemic hypoxia (10% O2). In the cerebral cortex ipsilateral to the carotid occlusion, ATP levels were depleted during a 30-min insult, but were restored to 64% of control during 60
This study examined sciatic motor nerve conduction velocity (MNCV) and the accumulation of 6-phosphofructokinase (PFK) activity proximal and distal to a sciatic nerve ligature in rats fed a diet containing 20% galactose for 4 weeks. MNCV was reduced in the galactose-fed rats to 94% of controls, (P
Hypoxia was induced by exposing rats to an atmosphere of 93% N2, 7% O2 for 4-48 hr. The animals became hypoxic as indicated by a decreased blood PaO2 (mean +/- SEM: 48 +/- 10 mm Hg). Hypoxia was accompanied by metabolic acidosis (pH 7.22 +/- 0.02) and decreased serum bicarbonate levels (9.0 +/- 4.0
In this study, galactose-based nanogels were prepared by reversible addition-fragmentation chain transfer process to facilitate the targeted delivery of iodoazomycin arabinofuranoside (IAZA), a clinical drug for imaging solid hypoxic tumors, and evaluate its role in hypoxia-selective
Three kinds of new water-soluble polysaccharides (FA, FB and FC) were isolated from wild mushroom Agaricus bitorquis (Quél.) Sacc. Chaidam by the classical method "water extraction and alcohol precipitation" and purified by column chromatography. The Mw of FA, FB and FC ranged from