Accurate quantification of metal-glycinates-sulphate complexes and free metals in feed by capillary electrophoresis inductively coupled plasma mass spectrometry.

Traceability of metal-glycinate-sulphate complexes (Metal-GLY) in feed requires specific analysis to differentiate complexes from inorganic forms. A previously described method focused on the quantification of Metal-GLY at one single concentration but not on the quantification of free metal ion forms. The objective of this work was to extend the method to quantify both Metal-GLY and free metal ion forms of various metals at low inclusion levels.

Characterization of a rapid and reliable method for iodide biomonitoring in serum and urine based on ion chromatography-ICP-mass spectrometry.

An appropriate and controlled supply of thyroid hormones is vital for proper body function. In turn, an appropriate synthesis of T3 and T4 in the thyroid gland is dependent on a sufficient and balanced iodide concentration in blood serum. Due to widespread iodine deficiency or some cases of iodine over exposure, iodide biomonitoring in serum is important and it is that biomonitoring approach being closest to the bioavailable I(-) supply for the thyroid gland.

Drosophila miR-277 controls branched-chain amino acid catabolism and affects lifespan.

Development, growth and adult survival are coordinated with available metabolic resources, ascertaining that the organism responds appropriately to environmental conditions. MicroRNAs are short (21-23 nt) regulatory RNAs that confer specificity on the RNA-induced silencing complex (RISC) to inhibit a given set of mRNA targets. We profiled changes in miRNA expression during adult life in Drosophila melanogaster and determined that miR-277 is downregulated during adult life.