Laboratoire de Minéralogie & Cosmochimie du Muséum

Evolutionary dynamics and functional refinement of IGF bioavailability in the vertebrate phylum : focus on IGFBPs

In eutherians, Insulin-like Growth Factor-I (IGF-I) and IGF-II exert insulin-like activity by interacting with type-I receptor. IGF bioavailability is finely regulated by six IGF-Binding Proteins (IGFBPs), IGFBP-1 to -6, which bind IGF-I and -II with high affinity but not insulin...

Carbon solubility and liquid–liquid immiscibility in Fe–C–S ternary system up to 6 GPa: implications for the core of small planetary bodies

Abstract High-pressure, high-temperature experiments were conducted in a multi-anvil press using seven different starting compositions to investigate the phase relations of Fe–C–S liquids at pressures up to 6 GPa and temperatures up to 2000 K. Quenched samples revealed immiscible...

Vulnerable microbial communities in Atacama-Altiplano wetlands: modern analogs of ancient ecosystems with implications for sustainability and conservation

Abstract The Altiplano-Puna plateau lies at ∼4,000 m above sea level in the volcanic Andes cordillera. Together with the adjacent Atacama Desert, it forms one of the most hyperarid regions on the planet. Wetlands are rare, influenced by hydrothermalism and, due to high evaporatio...