Decreasing mercury concentrations in beaks of the giant warty squid Moroteuthopsis longimana in the Scotia Sea (Southern Ocean) since the 1970s.

The giant warty squid Moroteuthopsis longimana is an important prey of top predators in the Southern Ocean. It is therefore a major link in the pathway of contaminants like mercury (Hg) to higher levels in food webs. In this study, we evaluated changes in Hg concentrations in beaks of adult M.

Interactive effects of Titanium-based compounds with Gadolinium and Mercury in Mytilus galloprovincialis.

The combined toxicity of metals in aquatic environments is a critical concern due to the complex interactions between different metal contaminants, as well as their interactions with other environmental factors. These combined effects often result in synergistic, antagonistic, or additive toxic responses, leading to heightened risks for aquatic organisms and ecosystems. This study investigates the toxicity of titanium in its bulk form (Ti) and as nanoparticles (nTi) when combined with other elements like gadolinium (Gd) and mercury (Hg), focusing on their effects on the mussel Mytilus galloprovincialis.

Does time matter? Organ-specific stress responses to cobalt in Mytilus galloprovincialis across salinities.

Cobalt (Co) pollution in aquatic ecosystems is rising due to its increased use in battery production. This study examines organ-specific biochemical responses of the mussel Mytilus galloprovincialis to Co exposure under three different salinities (20, 30, and 40) over 14 and 28 days. Mussels were exposed to 100 μg/L Co, and biomarkers of metabolism, oxidative stress, detoxification, and neurotoxicity were analyzed in the digestive gland, gills, mantle, and muscle.

Spatial and interspecific differences of trace element concentrations in the feathers of pelagic and coastal seabirds from the Northeast Atlantic Ocean and the Western Mediterranean Sea.

Coastal ecosystems face increasing contamination threats due to urbanisation and consequent human pressure worldwide. This study assessed exposure to 15 trace elements (Al, Cd, Co, Cr, Cu, Fe, Hg, Mn, Ni, Pb, Se, Sr, Ti, V, Zn) across the Northeast Atlantic and the western Mediterranean in pelagic shearwaters (Calonectris borealis and C. diomedea) and coastal gulls (Ichthyaetus audouinii and Larus michahellis).

Salt pan brine water sulphated polysaccharides retrieved at pilot scale: ability to stimulate in vitro human macrophages and salmon head kidney cells.

Marine environments are the warehouse of a variety of novel bioactive compounds prone to be explored by food and feed industry. The growing interest in sulphated polysaccharides has led to the search for new sustainable sources, such as seawater. These compounds are naturally concentrated in salt pan brine water due to their evaporation by wind and sunlight.

Gadolinium: a review on concentrations and impacts in marine and coastal systems.

This review synthesizes current knowledge on gadolinium (Gd) contamination in marine and coastal environments from 209 scientific publications. Of these, 83 studies were selected for detailed analysis, focusing specifically on marine invertebrate taxa to ensure a targeted examination of Gd's effects on key sentinel species within this group, with 69 papers (83.1 %) focusing on Gd concentrations in marine and coastal ecosystems, reporting concentrations ranging from 0.

Warfarin Pharmacogenomics: Designing Electrochemical DNA-Based Sensors to Detect *2 Gene Variation.

Background/objectives: The CYP2C9 enzyme is involved in the metabolism of warfarin. The gene harbors several single-nucleotide polymorphisms (SNPs), including (rs1799853), which is known to affect warfarin's therapeutic response. So, it is important to develop analytical tools capable of genotyping these SNPs to adjust warfarin's therapeutic outcomes.

From High-Tech To High-Risk? Unveiling the Acute Ecotoxicological Effects of Rare Earth Elements on Daphnia magna.

Technological advancement has brought significant environmental challenges, as its associated waste is difficult to manage and its long-term effects on ecosystems and biota remains uncertain. This study aimed to evaluate the acute toxicity of rare earth elements (REEs): lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, scandium, and yttrium on the standard aquatic species Daphnia magna through a toxicity screening approach. Based on EC values, the most toxic element was yttrium (EC = 7.

Application of Box-Behnken design to optimize the phosphorus removal from industrial wastewaters using magnetic nanoparticles.

Phosphorus is essential for all living organisms and limits aquatic plant growth. Pulp mill effluents, particularly from Eucalyptus bleached kraft pulp mills, contain phosphorus concentrations that vary with operational conditions. This variability poses challenges for effective treatment and phosphorus removal.

Calonectris shearwaters reveal a gradient of mercury contamination along the Atlantic and Mediterranean waters of the Iberian Peninsula.

This study examines blood mercury (Hg) concentrations in Calonectris spp. shearwaters from three colonies along the Atlantic and Mediterranean waters of the Iberian Peninsula (southwestern Europe), investigating their relationship with foraging ecology through GPS tracking and stable isotopes (δN and δC) data during the breeding season. Hg levels exhibited a spatial gradient, increasing from the Atlantic Ocean (1.

Investigating the effects of anthropogenic yttrium contamination: Biochemical alterations in the gills and digestive gland of exposed mussels (Mytilus galloprovincialis).

The rapid growth of electronic waste, including fluorescent lamp waste (FLW), has led to an increase in elements like yttrium (Y) and other rare earth elements (REE) in aquatic environments due to improper waste management. However, there are no guidelines for permissible concentrations of these elements in the environment. This study examines the biochemical impacts of varying Y concentrations (50, 100, and 200 µg L), mimicking a FLW discharge, on the gills and digestive gland of Mytilus galloprovincialis exposed for 14 days.

Effects of the Interaction of Salinity and Rare Earth Elements on the Health of : The Case of Praseodymium and Europium.

The growing use of products containing rare earth elements (REEs) may lead to higher environmental emissions of these elements, which can potentially enter aquatic systems. Praseodymium (Pr) and europium (Eu) are widely used REEs with various applications. However, their ecotoxicological impacts remain largely unexplored, with poorly understood risks to wildlife.

Salinity modulation of neodymium and dysprosium toxicity in mussels: A comprehensive analysis of adult and sperm responses.

Neodymium (Nd) and dysprosium (Dy) are among the most commonly used rare earth elements (REEs) worldwide, leading to their increased concentrations in aquatic environments, with potential impacts on organisms. Additionally, organisms are also subjected to environmental stressors, such as salinity shifts, which can not only directly impact their health but also modulate the impacts of contaminants. Therefore, this study aimed to evaluate the effects of Nd and Dy on adult mussels and sperm of the species Mytilus galloprovincialis after 28 days and 30 min of exposure, respectively.

Valorisation of acid mine drainage: Studying biosorption and bioaccumulation of rare earth elements by seaweeds.

Acid mine drainage (AMD) nature, persistence and the considerable amount of toxic elements cause significant environmental damage. Traditional passive treatment systems typically focus on neutralizing AMD using limestone and removing common toxic metal(loid)s, and often overlook the recovery of economic and strategic elements (e.g.

Squid beaks as a proxy for mercury concentrations in muscle of the giant warty squid Moroteuthopsis longimana.

Cephalopods play a major role in marine food webs as both predators and prey. Although most of the Hg in cephalopods is present in the muscle, most studies on its accumulation by predators are based on concentrations in beaks. Here, using upper and lower beaks and buccal masses of Moroteuthopsis longimana, we evaluated the relationship between Hg concentrations in different cephalopod tissues.

Complex interactions of rare earth elements in aquatic systems: Comparing observed and predicted cellular responses on Mytilus galloprovincialis.

Recent societal and technological developments have led to new sources of contamination, particularly from electronic waste (e-waste). The rapid increase in e-waste, combined with inadequate disposal and recycling practices has resulted in rising levels of hazardous substances in aquatic systems, including rare-earth elements (REEs). However, the effects of REEs on aquatic organisms remain poorly understood.

Removal of Rare Earth Elements from complex mixtures by using manganese ferrite nanoparticles: Optimization through surface response methodology.

The crucial role of Rare Earth Elements (REEs) in the development of hi-tech in addition to their limited availability have urged countries to develop sustainable alternatives to their conventional primary sources (ore mining). Sorption technologies using magnetic materials such as spinel ferrite nanoparticles provide efficient removal of REEs from contaminated solutions and ease of separation through application of an external magnetic field. However, there is still limited knowledge available regarding the optimal operational conditions in which to use these materials, especially in complex aqueous mixtures with different REEs.

Burnout syndrome and job satisfaction in community health workers.

Introduction: Community health workers play a prominent role in the primary care context in Brazil. Burnout syndrome is an important work-related condition whose consequences affect job satisfaction.

Objectives: To evaluate the extent of burnout syndrome and job satisfaction among community health workers in a city in southern Santa Catarina.

Optimizing the Recovery of Rare Earth Elements from Spent Fluorescent Lamps by Living sp.

Given the significant industrial applications of rare earth elements (REEs), supply chain constraints, and negative environmental impacts associated with their extraction, finding alternative sources has become a critical challenge. Previously, we highlighted the potential of living sp. in the removal and pre-concentration of Y from a solution obtained by sequential acid leaching of spent fluorescent lamps (SFLs).

Praseodymium and warming interactions in mussels: Comparison between observed and predicted results.

Being a crucial element for technological development, praseodymium (Pr) has been increasingly used, leading to a rise in its concentration in aquatic systems. However, its potential threats to organisms remain poorly understood. Besides contamination, organisms are also threatened by climate change-related factors, including warming.

The role of warming in modulating neodymium effects on adults and sperm of Mytilus galloprovincialis.

The use of rare earth elements (REEs) has been increasing and one of the most used is neodymium (Nd). Being an emergent contaminant, its negative impacts are poorly understood. Aquatic organisms are also threatened by climate change-related factors, as is the case of warming, which can change the effects of REEs.

Enhanced removal of rare earth elements from aqueous media: exploring the potential of AM-3 and AM-4 titanosilicates.

This study investigates the impact of three key variables on the performance of nanoporous AM-3 and layered AM-4 titanosilicates in removing nine REEs (Y, La, Ce, Pr, Nd, Eu, Gd, Tb, and Dy) from natural mineral water and identifies optimal operational conditions using Response Surface Methodology (RSM). The experimental conditions were determined by a Box-Behnken Design of 3 factors-3 levels (pH 4, 6, and 8; sorbent dose 20, 100, and 180 mg/L; and element concentration 1, 3, and 5 μmol/L). Three-dimensional response surfaces were used to assess the linear, quadratic, and interaction influences of each factor on the REEs' removal percentage.