title: [An imbalance in the natural cation ratio in the water as a factor affecting the synthesis of lipids and fatty acids in fish eggs].
abstract: The effects on the lipid status of developing embryos of a disturbed natural ratio of cations in water as a result of the pollution of water bodies by waste with a high potassium content (130-140 mg/I) were studied in the laboratory. The results obtained confirm the indication of reduced lipid synthesis and altered formation of phospholipids in embryos developing in a medium with a disturbed natural ratio of cations. In addition, the lysophospholipid fraction increased in these embryos, which indicates activation of phospholipid hydrolysis. It was also found that changes in the salt regime lead to a decreased content of cholesterol, the main membrane thickener. It was proposed that the changes discovered lead to disturbed stability and permeability of the membranes of fish eggs, with the subsequent death of embryos.
authors.affiliation: Institute of Aquatic Problems of the North, Karelian Scientific Center, Russian Academy of Sciences, Petrozavodsk, Russia.
authors.forename: T I
authors.initials: TI
authors.lastname: Regerand
authors.forename: N V
authors.initials: NV
authors.lastname: Fedorova
mesh_terms: D000818:Animals; D002122:Calcium Chloride / Q000494:pharmacology*; D002412:Cations; D002849:Chromatography, Gas; D005227:Fatty Acids / Q000032:analysis / Q000096:biosynthesis*; D005260:Female; D005399:Fishes / Q000378:metabolism*; D005618:Fresh Water; D008055:Lipids / Q000032:analysis / Q000096:biosynthesis*; D010063:Ovum / Q000737:chemistry / Q000187:drug effects / Q000378:metabolism*; D012722:Sewage / Q000009:adverse effects; D012965:Sodium Chloride / Q000494:pharmacology*; D014874:Water Pollutants, Chemical / Q000009:adverse effects*
chemical_list: D002412:Cations; D005227:Fatty Acids; D008055:Lipids; D012722:Sewage; D014874:Water Pollutants, Chemical; D012965:Sodium Chloride; D002122:Calcium Chloride