Publications by authors named "Luis D Boada"

Volcanic eruptions pose significant health risks to inhabitants of affected regions, with volcanic gases, including carbon dioxide (CO), being a notable concern. This review examines the implications of long-term exposure to volcanic CO emissions on public health, highlighting the shift in understanding from acute to chronic health effects. Recent studies have underscored the need to reevaluate the adverse health impacts of CO beyond acute toxicity symptoms.

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Background: The eruption of the Tajogaite volcano began on the island of La Palma on September 19, 2021, lasting for 85 days. This study aims to present the design and methodology of the ISVOLCAN (Health Impact on the Population of La Palma due to the Volcanic Eruption) cohort, as well as the preliminary findings from the first 1002 enrolled participants.

Methods: A prospective cohort study was conducted with random selection of adult participants from the general population, with an estimated sample size of 2600 individuals.

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Background: The infant population is particularly sensitive, so the risk posed by their diet must be analyzed. The aims of the present study were (i) to determine the contents of 38 elements in 159 samples of ready-to-eat baby food sold in Spain and (ii) to estimate the dietary intakes and risk assessments of these elements in name brands and store brands in infants ranging between 6 and 12 months of age.

Methods: A list of essential, non-essential/toxic elements, rare earth elements (REEs), and other hi-tech-related elements that are currently considered as emerging environmental pollutants were measured in ready-to-eat baby foods by ICP-MS.

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Article Synopsis
  • The study analyzed the blood concentrations of 49 inorganic elements in 401 participants from Cape Verde, focusing on heavy metals and rare earth elements, as part of the PERVEMAC-II project.
  • Findings revealed that 20 out of 49 elements were detected in over 20% of participants, with arsenic, copper, mercury, lead, selenium, strontium, and zinc being the most frequently found.
  • Demographics such as age and lifestyle factors, like water source and food purchasing habits, significantly influenced the levels of these toxic elements, highlighting the need for targeted public health measures.
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Animals and humans are exposed to various residues that can have a detrimental impact on health, including carcinogenic potential, endocrine disruption, or fatal toxicity. The toxic burden can be evaluated in several biological samples, with serum being one of the preferred and most convenient options. In this study, we have applied and validated a method for detecting several hundred toxins in serum samples.

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Several studies have examined the association between prenatal exposure to organophosphate and pyrethroid pesticides and their impact on foetal growth and newborn anthropometry; however, the available evidence is limited and inconclusive. This study examined whether prenatal organophosphate and pyrethroid pesticide exposure was associated with anthropometric measures at birth (weight, length, head circumference), ponderal index, gestational age, and prematurity in 537 mother-child pairs. These were randomly selected from the 800 pairs participating in the prospective birth cohort GENEIDA (Genetics, early life environmental exposures and infant development in Andalusia).

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  • A study examined 47 elements in leafy green vegetables to assess daily intake amounts and health risks for different age groups in the Canary Islands population.
  • Spinach, arugula, watercress, and chard were found to be the top contributors of essential elements like iron and zinc, while spinach had the highest levels of potentially toxic elements such as aluminum and chromium.
  • Overall, consuming leafy vegetables can meet nutritional needs for essential elements without posing significant health risks from toxic metals, although monitoring is suggested for certain elements like thallium.
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Objective: The set of exposures to chemical substances and their role as a cause of disease gives rise to the concept of the exposome, partially made up of chemical pollutants to which an individual is exposed, which is why, unlike the genome, it is an a priori modifiable factor, its study being crucial in terms of Public Health. The population of the Canary Islands has been studied in terms of its levels of chemical contamination, with numerous biomonitoring studies, which makes it necessary to characterise its exposome and its consequences in terms of disease, in order to implement specific corrective measures to minimize the impact on its health.

Methods: A review of scientific literature (MEDLINE and Scopus) was made, according to PRISMA criteria and PICO methodology, to include studies on biomonitoring of pollutants, or evaluating the effect of pollutants on diseases prevalent in the archipelago.

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Ethanol and medical psychotropics (MPs) are legal psychoactive substances widely consumed in Western countries that are routinely detected in standard toxicological analyses at compulsory autopsies, and toxicokinetic interactions between these drugs have been described. However, studies assessing the consequences of this co-consumption are scarce in Europe. We performed a retrospective study on toxicological results from compulsory autopsies in Spain.

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Medical psychotropics are widely used and prescribed in developed countries. These medications may have an impairing effect on mood or perception and may induce harmful behaviors. Nevertheless, in Europe, studies on their importance from a medico-legal perspective are scarce.

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The occurrence of organic pollutants in soil is a major environmental concern. These compounds can reach the soil in different ways. Point sources, related to pesticides that are used intentionally, can be applied directly to the soil, or reach the soil indirectly due to application to the aerial parts of crops.

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The recent volcanic eruption on the island of La Palma has aroused the concern of banana producers and consumers, given that in its area of influence there are thousands of hectares of banana plantations with an annual production of about 100 million kilos for export. Since volcanoes are one of the main natural sources of heavy metal contamination, we sampled bananas from the affected area and determined the concentrations of 50 elements (Ag, Al, As, Au, Ba, Be, Bi, Cd, Ce, Co, Cr, Cu, Cu, Dy, Er, Eu, Fe, Ga, Gd, Hg, Ho, In, La, Lu, Mn, Mo, Nb, Nd, Ni, Os, Pb, Pd, Pm, Pr, Pt, Sb, Sc, Se, Sm, Sn, Sr, Ta, Tb, Th, Ti, Tl, Tm, U, Y, Yb and Zn). The levels of 36 elements were elevated but the washing implemented after the eruption can remove a good part.

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Article Synopsis
  • Animal poisoning poses a significant threat to wildlife, particularly in the Canary Islands, where the risk is higher than in other parts of Europe.
  • A study from 2014 to 2021 analyzed 961 animals and 84 baits, revealing that 251 animals and 61 baits were poisoned, with carbofuran being the most common poison used.
  • The introduction of canine patrols has improved the detection of poisoned animals, with higher rates of poison positivity found in rural areas and regions with intensive agricultural and livestock activities.
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  • The study adapted a QuEChERS-based method for analyzing hundreds of contaminants in liver samples, crucial for food safety and biomonitoring.
  • The validated method can detect 351 contaminants, with 80% having a limit of quantification (LOQ) under 2 ng/g, and revealed that 29 contaminants were found in 42 consumer liver samples, predominantly 4,4'-DDE and various persistent organic pollutants (POPs).
  • In a pilot biomonitoring study of 151 wild bird livers in the Canary Islands, the method detected 52 contaminants, highlighting elevated levels of anticoagulant rodenticides and agricultural pesticides, particularly in terrestrial and nocturnal birds.
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Dry feed for pets lacks specific legislation regarding maximum residue limits for inorganic elements. The aim of the present study was to determine the content of 43 inorganic elements in dog and cat feed, studying whether there were differences according to the supposed quality of the food and performing the risk assessment for health. Thirty-one and thirty packages of pelleted dry food for cats and dogs, respectively, were analyzed.

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  • The article focuses on a study examining how intensive livestock farming affects the exposure of raptors in the Canary Islands to anticoagulant rodenticides.
  • It includes a GIS analysis that maps the locations of raptors (308 total) and measures the concentrations of rodenticides found in their livers.
  • The dataset also provides additional insights into how farming activity impacts rodenticide exposure across different islands and raptor species.
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  • The Canary Islands are rich in biodiversity with over 4500 endemic species, but face threats from human activity, particularly through the use of anticoagulant rodenticides (AR) that have been found in wildlife carcasses.
  • A forensic study of 831 animal carcasses from 2011 to 2020 revealed that most non-raptor mammals and reptiles tested positive for AR, indicating intentional poisoning, although many were poisoned by other methods.
  • Raptors showed a significantly higher incidence of AR exposure (nearly 60%), with certain falcon species, previously under-researched, also showing contamination; however, after regulations limiting AR concentrations, there was a noted decrease in liver toxin concentrations in raptors.
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The major purpose of human biomonitoring is the mapping and assessment of human exposure to chemicals. The European initiative HBM4EU has prioritized seven substance groups and two metals relevant for human exposure: Phthalates and substitutes (1,2-cyclohexane dicarboxylic acid diisononyl ester, DINCH), bisphenols, per- and polyfluoroalkyl substances (PFASs), halogenated and organophosphorous flame retardants (HFRs and OPFRs), polycyclic aromatic hydrocarbons (PAHs), arylamines, cadmium and chromium. As a first step towards comparable European-wide data, the most suitable biomarkers, human matrices and analytical methods for each substance group or metal were selected from the scientific literature, based on a set of selection criteria.

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  • - A study investigated the relationship between 45 inorganic elements and stroke risk in 92 patients compared to 83 healthy controls.
  • - Results indicated higher blood levels of lead in stroke patients, while gold and cerium levels were significantly higher in the controls, suggesting a potential protective effect.
  • - The findings showed that lead is positively associated with stroke risk, whereas gold and cerium are inversely associated, highlighting the need for further research on their sources and mechanisms.
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Persistent organic pollutants (POPs) have been banned over the last decades for being damaged to the environment and to the health of humans and animals. However, due to their lipophilic nature and resistance to degradation, they are frequently detected in biological samples. Its presence has been associated with the increased risk of suffering from different diseases in human series, being newborns and children especially sensitive.

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  • Many dry dog and cat foods in Europe are made with cereals, raising concerns about mycotoxin contamination that could harm pets.
  • A study of popular pet food brands in Spain found various mycotoxins, especially high levels of fumonisins in cat food, though most toxins were at low levels overall.
  • While no immediate health risks were identified, potential long-term issues exist, especially due to high fumonisins and possible combined effects of multiple toxins, highlighting the need for further research.
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  • * All 47 elements were found in brain tumor tissue, with 22 detected in over 80% of samples, indicating their ability to cross the blood-brain barrier.
  • * Notably, higher median blood levels of cadmium, lead, and nickel, along with significant concentrations of gadolinium and tantalum in patients, suggest that various elements used in tech devices may influence brain tumor development.
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Biomonitoring studies are important for quantifying the body burden of pollutants and their possible effects on health. Serum concentration of 42 elements was assessed by ICP-MS in 89 children (7.2 ± 3.

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  • The study analyzed 43 elements in fresh, preserved, and frozen mussels to assess their nutritional value and health risks for consumers in Spain.
  • Mussels significantly contribute to essential element intake, providing nearly 70% of daily selenium, 30-35% of molybdenum, zinc, cobolt, and about 15% of iron.
  • While average mussel consumption poses no major risk for toxic elements, high consumers should be cautious of potentially high exposure to cadmium and arsenic, especially from fresh and frozen types; moderate consumption is recommended for safety and nutrition.
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Despite the fact that many of persistent organic pollutants (POPs) have been banned for decades, they still constitute a group of harmful substances to human health. Prenatal exposure can have adverse effects on one's health as well as on their newborns. The present cross-sectional study, which includes 87% of the births registered in La Palma Island (Canary Islands, Spain) during 2016 (n = 447), aims to evaluate the potential adverse health effects exerted by a wide range of POPs on newborns.

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