The study of sexual differences in the regulation of exocrine liver function is one of the topical areas in hepatology. After all, the liver serves as a mediator in a number of systemic effects of sex hormones on the body and is a key organ of their metabolism. In particular, the correlation between the concentration of steroid hormones can determine the direction of physiological processes and their possible distortions. Methods: physiological, biochemical, methods of mathematical statistics. Cholesecretion increased in female rats under the influence of testosterone. Testosterone raised the concentration of taurocholic acid and at the end of the acute experiment the level of taurohenodeoxycholic and taurodeoxycholic acids significantly increased. By comparison, the content of glycocholates decreased significantly immediately after the administration of the hormone but at the end of the experiment, the content of glycocholic acid increased significantly. The level of free bile acids increased under the testosterone. Testosterone affected the bile lipid composition, in particular, it raised the concentrations of phospholipids, cholesterol and its ethers, while the content of free fatty acids decreased under the studied hormone. Testosterone when administered intraperitoneally to female rats significantly affects the concentration of conjugated and free cholate, which may indicate its involvement in metabolic transformations and transport of bile acids to the primary bile ducts. The studied hormone raised the concentration of phospholipids, cholesterol and its ethers, but reduced the content of free fatty acids in the liver secretion of the studied animals.
This work presents the results of long-term complex study of acaridid mites’ fauna and ecology in different biotopes (agricultural and industrial objects) in Zhytomyr Polissia. There were 30 species identified, which belong to five families: Suidasidae, Acaridae, Glycyphagidae, Chortoglyphidae, Aeroglyphidae. The results showed that acarocomplex of industrial objects, like mills, granaries and warehouses, includes the 11 Acaridae species, and that of compound fodder factories — three species. Acarofauna of agricultural objects was shown to consist of 30 species: 21 in barns with animal feed (grains, compound feeds, hay and straw), 12 in outbuildings with livestock and poultry, 9 in beehives, 13 in vegetable storages. The qualitative differences of mentioned acarocomplexes were established, and the factors to possibly influence their dynamics were discussed.
Among the various functions of the liver, the formation of bile plays an important role. The optimal physiological ratio of bile components and the content of testosterone in the blood depend on various factors that can cause biliary system dysfunction and secretion. In experiments on different-sex rats, changes in bile acid contents of bile under the influence of testosterone propionate, which was injected intramuscularly 0.7 mg/kg, for 5 days were investigated. With the method of thin-layer chromatography, the basic fractions of bile acids conjugated in the bile were defined – taurocholic, taurochenodeoxycholic and taurodeoxycholic, glycocholic, glycochenodeoxycholic and glycodeoxycholic and free – cholic, chenodeoxycholic and deoxycholic acids. Conjugation rates were calculated (the ratio of the sum of conjugated cholates to the amount of free ones) and hydroxylation (ratio of the sum of trihydroxycholate bile acids to the sum of dihydroxycholanic) bile acids. In the bile of female rats almost all concentrations of cholates increased, except glycochenodeoxycholic and glycodeoxycholic acids. The calculated conjugation index on the whole did not undergo significant changes, but the hydroxylation factor increased, which may indicate an intensification of bile acid biosynthesis by neutral means, which is realized by 7α-hydroxylation of cholesterol. Under the influence of the hormone in male rats, the content of conjugated bile acids increased, and as for the free ones – a multidirectional effect of testosterone is observed, in particular, the concentration of cholic acid significantly decreased, indicating the activation of the poly-enzyme systems providing its conjugation with glycine and taurine. In connection with the wide use of the drug testosterone propionate and in view of its identified effects on the bile acid contents of the course of intramuscular administration, it is advisable to investigate the effect of this drug on the productive capacity of the liver.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.