Conjugated Dienoic Acid Peroxides as Substrates in Bioluminescence System.

Biochemistry of bioluminescence of the marine parchment tubeworm has been in research focus for over a century; however, the results obtained by various groups contradict each other. Here, we report the isolation and structural elucidation of three compounds from algae, which demonstrate bioluminescence activity with luciferase in the presence of Fe ions. These compounds are derivatives of polyunsaturated fatty acid peroxides.

Distribution of Ferrihydrite Nanoparticles in the Body and Possibility of Controlling Them in an Isolated Organ by a Permanent Magnetic Field.

We studied the distribution of ferrihydrite nanoparticles isolated from bacteria Klebsiella oxytoca in the whole body in vivo and in a cultured isolated organ (liver). The possibility of controlling these nanoparticles in the body using a magnetic field was assessed. One hour after intravenous injection of ferrihydrite nanoparticles to mice, their accumulation was observed in the liver, lungs, and kidneys.

Luciferin-Luciferase System of Marine Polychaete Chaetopterus variopedatus.

This paper presents the preliminary results of the separation of the Chaetopterus variopedatus bioluminescent system into luciferin and luciferase and a brief description of some of their properties.

[Zinc status in children and adolescents with growth hormone deficiency].

The objective was to study blood Zinc levels and hair Zinc content in three subsets of 40 naive patients (29 boys) with childhood onset GH deficiency (isolated total GHD, partial GHD, syndrome biological inactive GH). Our data showed that GHD in children and adolescents, independently of GHD severity and etiology, is associated with significant decrease of blood zinc level (P < 0.05).