Abstract
Study of phospholipids changes peculiarities in the liver and dorsal muscles of sterlet (Acipenser ruthenus Linnaeus) may be important to determine the etiology and pathogenesis of fatty liver. We established that the content of total phospholipids in tissues of the liver and dorsal muscles of three-year-old sterlet was less than for two-year-old fish by 15% and 20% (P ≤ 0.01), respectively. The amount of phosphatidylcholine (P ≤ 0.05), phosphatidylethanolamine, phosphatidylserine (P ≤ 0.01), phosphatidylinositol (P ≤ 0.01) and cardiolipin in the liver of 3-year-old sterlet was lower than for the 2-year-old fish, while quantitative indices for lysophosphatidylcholine and sphingomyelin were slightly increased. Similarly, in the cells of the dorsal muscles, the amount of phospholipid components (except lysophosphatidylcholine) was decreased with age. A decrease in the amount of phosphatidylethanolamine and phosphatidylserine in the dorsal muscles of 3-year-old sterlet was significant. The major phospholipids respective distribution was stable, except for phosphatidylethanolamine and particularly sphingomyelin.
Highlights
Sterlet (Acipenser ruthenus) is the only sturgeon that lives in fresh water
The aim of our research was to study the age-related changes of phospholipids contents in the liver and dorsal muscles of sterlet at the age of 2 and 3 years
Phospholipids were separated by two-dimensional thin layer microchromatography on standard plates (Sorbfil, Russia) according to the method [6]
Summary
It was put on the Red List of the International Union for Conservation of Nature as a “vulnerable species”, while the Red Data Book of Ukraine treats it as “endangered species” [1] In this regard, identifying the causes and molecular mechanisms of fatty liver and early death of sterlet is valuable both in order to conserve and farm industrially the fish [2, 3]. This is most distinctly manifested in the annual cycle, during which lipid reserves may be redistributed between tissues and organs, with possible changes in dissimilation and assimilation of lipids, including phospholipids, depending on the dominant metabolic processes for this period [3, 4]. The aim of our research was to study the age-related changes of phospholipids contents in the liver and dorsal muscles of sterlet at the age of 2 and 3 years
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