A massive bloom of Karenia species (Dinophyceae) off the Kamchatka coast, Russia, in the fall of 2020.

In the fall of 2020, a long-lasting and massive harmful algal bloom (HAB) with extensive fields of yellow sea foam was observed in relatively cold waters (7-13 °C) off the coasts of the Kamchatka Peninsula, Russia. According to the estimates based on bio-optical parameters in satellite imagery, the Kamchatka bloom 2020 lasted for two months and covered a vast area of more than 300 × 100 km. An abundance of dead fish and invertebrates, including sea urchins, sea anemones, chitons, cephalopods, bivalves were found on shore during the bloom.

Effect of experimental hyperphenylalaninemia on the postnatal rat brain.

The molecular mechanism of the disturbance of brain development caused by phenylketonuria remains mostly unknown. We have studied three molecular markers that reflect the development of neurons, glia and the extracellular matrix of the postnatal rat brain in an animal model of hyperphenylalaninemia, in order to elucidate the possible mechanism by which increased phenylalanine influences brain development. The content of NCAM, GFAP and hyaluronate-binding activity were compared in cerebellum and telencephalon of normal rats and those subjected to high phenylalanine.