Experimental Evaluation of the Effectiveness of Isobornylphenols in the Model of Pathospermia and Their Effect on the Antioxidant-Prooxidant Balance of Male Germ Cells.

We studied the effect of antioxidants dibornol (2,6-diisobornyl-4-methylphenol) and its derivative (4-hydroxymethyl-2,6-diisobornylphenol), members of the alkylated phenols group, on the redox potential of male germ cells and their morphological and functional state in the rat model of pathospermia. Pharmacological effect was observed in animals treated with dibornol. The studied compounds led to the normalization of the antioxidant-prooxidant balance.

Synthesis and Antioxidant Capacity of Some Derivatives of Sesamol at the C-6 Position.

Several synthetic approaches (aminomethylation, alkylation, condensation, etc.) have been used to synthesize derivatives based on the sesamol (1), natural phenol. The set of methods, including the study of antioxidant activity (AOA) by the ability to inhibit the initiated oxidation of animal lipids, radical scavenging activity, Fe -chelation ability, as well as a comparative assessment of membrane-protective activity under the conditions of H O -induced hemolysis of mice red blood cells (RBCs), was used to analyze the antioxidant potential of the synthesized compounds.

Effectiveness of Phenolic Antioxidants in Experimental Model of Benign Prostatic Hyperplasia.

Experimental model of sulpiride-provoked benign prostatic hyperplasia was employed to comparatively assess the effect of phenolic antioxidants (dihydroquercetin, p-thyrozol, dibornol, and prostagenin) on prostate morphology. All examined agents decreased the degree of hyperplasia in acinar epithelium; the greatest efficacy was demonstrated by prostagenin. Moreover, dihydroquercetin and p-thyrozol increased the cross-section area of acinar lumina and prostate volume, which is inadmissible in this pathology.

Synthesis and Antioxidant Ability of Novel Derivatives Based on para-Coumaric Acid Containing Isobornyl Groups.

A series of novel esters and amides was synthesized on the basis of para-coumaric acid containing isobornyl groups in ortho-positions relative to the phenolic hydroxy group. Antioxidant properties of the obtained compounds were evaluated and compared on in vitro models: radical-scavenging ability, antioxidant activity on a substrate containing the lipids of animal brain, cytotoxicity of red blood cells, antioxidant and membrane-protective properties on the model of oxidative red blood cells hemolysis. Statistically significant relationship was established between the antioxidant activity of the studied compounds in model system containing animal lipids and the parameters reflecting their antioxidant properties on the model of H O -induced hemolysis of red blood cells.