[Meta-analysis of experimental studies of the effect of melatonin monotherapy on the levels of thyroid hormones and glucocorticoids in rats kept under standard condition].

Background: Melatonin is known to modulate circadian and seasonal rhythms in metabolism, reproduction, and behavior. However, the effect of exogenous melatonin supplementation on the functioning of the thyroid and adrenal glands in species without a clear seasonality in reproduction is still unclear.

Aim: Using a meta-analysis of publications, to investigate the effect of melatonin monotherapy on the concentrations of pituitary thyroid-stimulating hormone, thyroid hormones (TG), pituitary adrenocorticotropic hormone and corticosterone (CS) in rats kept under standard laboratory conditions.

Nitrogen-rich carbon dots as the antisolvent additive for perovskite-based photovoltaic devices.

Solution-processed perovskite solar cells (PSCs) have demonstrated a tremendous growth in power conversion efficiency (PCE). A high-quality, defect-free perovskite-based active layer is a key point to enhance PSC performance. Introduction of additives and interlayers have proved to be an effective tool to passivate surface defects, control crystal growth, and improve PSC stability.

Hormonal basis of seasonal metabolic changes in mammalian species.

Seasonal changes in external conditions (photoperiod, meteorological conditions, diet) cause adaptive changes in both energy and substrate metabolism in the animals of mammalian species. In summer, long days and a rich diet contribute to relative elevation in the levels of thyroid hormones (TH), but warmer weather lowers their levels. In winter, short days and a poor diet inhibit TH synthesis, but low temperatures increase their secretion.

Reading tea leaves worldwide: Decoupled drivers of initial litter decomposition mass-loss rate and stabilization.

The breakdown of plant material fuels soil functioning and biodiversity. Currently, process understanding of global decomposition patterns and the drivers of such patterns are hampered by the lack of coherent large-scale datasets. We buried 36,000 individual litterbags (tea bags) worldwide and found an overall negative correlation between initial mass-loss rates and stabilization factors of plant-derived carbon, using the Tea Bag Index (TBI).