Antioxidant activity of ethanolic fractions of Polish propolis.

There is a great variation in the chemical composition of propolis of different origins. Likewise, the method of its extraction has significant impact on the content of biologically active compounds. Here we compared methods of propolis extraction for optimal antioxidant activities which were measured by means of beta-carotene discolouration, 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging, and 2,2'-azinobis-3-ethylbenzothiazoline-6-sulfonic acid (ABTS*+) radical cation decolouration assays.

The influence of small doses of paracetamol on rabbit liver.

Paracetamol has properties that make it useful in many kinds of drugs that are readily available to users. These drugs are often used for extensive periods of time without a doctor's supervision, which might lead to unexpected overdose. The aim of this work was to assess the extent of liver damage in rabbits after administering them with paracetamol for approximately 2 months.

Influence of liver's oxide-reductive homeostasis disorder for AKBR values in rabbit's arterial blood.

The keton bodies are created generally in a liver, but this organ has no enzymatic system able to metabolize them. A dependence exists between the molar acetoacetate concentration and the molar beta-hydroxybutyrate concentration, and it can be an indicator of quantitive relations between NAD and NADH. Metabolic reserve can be estimated on the basis of the molar concentration of keton bodies in the arterial blood--of the AKBR value.

[Effect of sodium fluoride in the presence of vitamin C on isolated rat hepatocytes].

Physiologically, prooxidants coexist in a dynamic equilibrium with factors that have antioxidant properties and so form an integrated antioxidant defence system of the organism. By determining the total antioxidant status (TAS) in the biological material it is possible to evaluate the influence of various factors on the organism's antioxidant properties. The aim of this study was to assess the influence of sodium fluoride and ascorbic acid on TAS.

Glycosoaminoglycans in nasal polyps.

Conclusion: The qualitative and quantitative compositions of GAGs were comparable in all the polyps examined.

Objective: Glycosoaminoglycans (GAGs) are an integral component of proteoglycans, which are constituents of connective tissue. The qualitative and quantitative compositions of GAGs occurring in proteoglycans determine their biological role.