Quantification and molecular characterization of intact rotavirus species A (RVA) in municipal solid waste leachate.

AIMS: Leachate comprises a solid waste decomposition product found fresh in collection trucks or as an effluent in landfills. This study aimed to assess the occurrence, concentrations, and genetic diversity of intact rotavirus species A (RVA) in solid waste leachate. METHODS AND RESULTS: Leachate samples were concentrated by ultracentrifugation, treated with propidium monoazide (PMA), and exposed to LED photolysis. Treated and untread samples were extracted using the QIAamp Fast DNA Stool mini kit, and nucleic acids were screened for RVA employing a Taqman® Real-time PCR. The PMA RT-qPCR method detected RVA in eight out of nine truck samples and in 15.40% (2/13) of the landfill leachate samples. The RVA concentrations in the PMA-treated samples ranged from 4.57 × 103 to 2.15 × 107 genomic copies (GC) 100 mL-1 in truck leachate and from 7.83 × 103 to 1.42 × 104 GC 100 mL-1 in landfill samples. Six truck leachate samples were characterized as RVA VP6 genogroup I2 by partial nucleotide sequencing. CONCLUSIONS: The high intact RVA detection rates and concentrations in truck leachate samples indicate potential infectivity and comprise a warning for solid waste collectors concerning hand-to-mouth contact and the splash route.

[Regulation of pesticide residues in food in the MERCOSUR: a much needed discussion for health surveillanceRegulación de los residuos de productos agrotóxicos en los alimentos en el MERCOSUR: una discusión necesaria para la vigilancia de la salud]. / Regulação de resíduos de agrotóxicos em alimentos no MERCOSUL: discussão necessária para vigilância sanitária.

The objective of this descriptive and exploratory study with a qualitative basis was to identify MERCOSUR resolutions on pesticide residues in food issued between 1991 and 2022, analyzing the regional harmonization processes of these milestones and their incorporation into the regulatory framework of MERCOSUR founding Member States (Argentina, Brazil, Paraguay, and Uruguay). The analysis identified important points for the regulation and monitoring of pesticide residues in food in MERCOSUR, such as the synonyms used in the definition of pesticides and the scope of the regulatory system in each country, the marked differences in the scope of the main national regulatory frameworks, the unequal incorporation of international and regional regulations by the Member States and the challenges for harmonizing legislation on pesticide residues in food within MERCOSUR. In addition to the limited advances observed in the attempt to harmonize the relevant legislation within the bloc, there is a need to advance, nationally and regionally, in the processes to regulate pesticide residues in food, so as to ensure the quality of the products and services provided to the population and also to strengthen safer agro/food trade that relies on processes that are less harmful to the environment.

El objetivo de este estudio descriptivo y exploratorio, de base cualitativa, fue identificar las resoluciones del MERCOSUR sobre la gestión de residuos de productos agrotóxicos en los alimentos publicadas entre los años 1991 y 2022 y analizar los procesos de armonización regional de esos marcos y su incorporación al marco regulatorio de los Estados Partes fundadores del bloque (Argentina, Brasil, Paraguay y Uruguay). En el análisis se identificaron puntos importantes para la regulación y el seguimiento de la gestión de residuos de productos agrotóxicos en los alimentos en el MERCOSUR, tales como los sinónimos utilizados en la definición de productos agrotóxicos y la amplitud del sistema regulatorio de cada país, las diferencias más destacadas en el alcance de los principales marcos regulatorios nacionales, la desigualdad de la incorporación de los reglamentos regionales e internacionales por parte de los Estados Partes y los desafíos para la armonización de la legislación sobre residuos de productos agrotóxicos en los alimentos en el ámbito del MERCOSUR. Además de los limitados avances observados en el intento de armonizar la legislación pertinente dentro del bloque, existe la necesidad de avanzar, a nivel nacional y regional, en los procesos regulatorios sobre la gestión de residuos de productos agrotóxicos en los alimentos, asegurando la calidad de los productos y servicios ofrecidos a la población y fortaleciendo así el comercio de alimentos más inocuos producidos a partir de procesos menos nocivos para el medioambiente en el MERCOSUR.

Regulação de resíduos de agrotóxicos em alimentos no MERCOSUL: discussão necessária para vigilância sanitária

[RESUMO]. O objetivo deste estudo descritivo e exploratório, de base qualitativa, foi identificar as resoluções do MERCOSUL sobre resíduos de agrotóxicos em alimentos publicadas entre 1991 e 2022, analisando os processos de harmo- nização regional desses marcos e sua incorporação ao arcabouço regulatório dos Estados Partes fundadores do bloco (Argentina, Brasil, Paraguai e Uruguai). A análise identificou pontos importantes para a regulação e o monitoramento de resíduos de agrotóxicos em alimentos no MERCOSUL, como as sinonímias utilizadas na definição de agrotóxicos e a abrangência do sistema regulatório de cada país, as marcadas diferenças no alcance dos principais marcos regulatórios nacionais, a incorporação desigual de regulamentos internacionais e regionais pelos Estados Partes e os desafios para a harmonização da legislação sobre resíduos de agrotóxicos em alimentos no âmbito do MERCOSUL. Para além dos limitados avanços observados na tentativa de harmo- nizar a legislação pertinente dentro do bloco, observa-se a necessidade de avançar, nacional e regionalmente, nos processos regulatórios sobre resíduos de agrotóxicos em alimentos, garantindo a qualidade dos produtos e serviços ofertados à população e fortalecendo, assim, um comércio de alimentos mais seguros e produzidos a partir de processos menos prejudiciais ao ambiente no MERCOSUL.

[ABSTRACT]. The objective of this descriptive and exploratory study with a qualitative basis was to identify MERCOSUR resolutions on pesticide residues in food issued between 1991 and 2022, analyzing the regional harmoni- zation processes of these milestones and their incorporation into the regulatory framework of MERCOSUR founding Member States (Argentina, Brazil, Paraguay, and Uruguay). The analysis identified important points for the regulation and monitoring of pesticide residues in food in MERCOSUR, such as the synonyms used in the definition of pesticides and the scope of the regulatory system in each country, the marked differences in the scope of the main national regulatory frameworks, the unequal incorporation of international and regional regulations by the Member States and the challenges for harmonizing legislation on pesticide residues in food within MERCOSUR. In addition to the limited advances observed in the attempt to harmonize the relevant legislation within the bloc, there is a need to advance, nationally and regionally, in the processes to regulate pesticide residues in food, so as to ensure the quality of the products and services provided to the population and also to strengthen safer agro/food trade that relies on processes that are less harmful to the environment.

[RESUMEN]. El objetivo de este estudio descriptivo y exploratorio, de base cualitativa, fue identificar las resoluciones del MERCOSUR sobre la gestión de residuos de productos agrotóxicos en los alimentos publicadas entre los años 1991 y 2022 y analizar los procesos de armonización regional de esos marcos y su incorporación al marco regulatorio de los Estados Partes fundadores del bloque (Argentina, Brasil, Paraguay y Uruguay). En el análisis se identificaron puntos importantes para la regulación y el seguimiento de la gestión de residuos de productos agrotóxicos en los alimentos en el MERCOSUR, tales como los sinónimos utilizados en la definición de productos agrotóxicos y la amplitud del sistema regulatorio de cada país, las diferencias más destacadas en el alcance de los principales marcos regulatorios nacionales, la desigualdad de la incorporación de los reglamentos regionales e internacionales por parte de los Estados Partes y los desafíos para la armonización de la legislación sobre residuos de productos agrotóxicos en los alimentos en el ámbito del MERCOSUR. Además de los limitados avances observados en el intento de armonizar la legislación pertinente dentro del bloque, existe la necesidad de avanzar, a nivel nacional y regional, en los procesos regulatorios sobre la gestión de residuos de productos agrotóxicos en los alimentos, asegurando la calidad de los productos y ser- vicios ofrecidos a la población y fortaleciendo así el comercio de alimentos más inocuos producidos a partir de procesos menos nocivos para el medioambiente en el MERCOSUR.

Metals in seston from Cabo Frio Bay, a region under the influence of upwelling in SE-Brazil.

This study, performed during 2003-2005 and 2008-2009, investigated metals (Al, Fe, Ba, Zn, Mn, Cr, Cu, Ni, Cd) content in seston at Cabo Frio Bay, SE-Brazil. This study may serve as a baseline of seston metal distribution to guide biogeochemical and ecological models. The seston fractions (> 20 µm, > 64 µm, > 100 µm, and > 150 µm) were sampled in sub-surface horizontal hauls. Metals were determined by ICP-MS. The metals range: Al (62.5-56,867.6 µg g-1), Fe (23.5-25,384.0 µg g-1), Mn (2.7-336.8 µg g-1), Ba (< 0.005-356.3 µg g-1), Zn (0.5-94.2 µg g-1), Cr (0.7-35.5 µg g-1), Cu (4.3-41.7 µg g-1), Ni (< 0.005-19.1 µg g-1) and Cd (< 0.0004-2.4 µg g-1). Aluminium, Fe, Mn, Ba, and Zn showed significant differences (p < 0.05) between the seston fraction. The results obtained in this study suggest that the elements (Fe, Mn, Ba) in the seston were strongly influenced by the abiogenic source. In contrast, Zn, Cd, Cu, Cr, and Ni can be biogenic/anthropogenic sources. The significant positive linear correlation of Zn:P, Cd:P, and Cu:P can indicate an intracellular concentration higher than the external adsorption in the plankton community.

Exposure of pregnant women and their children to pyrethroid insecticides in Rio de Janeiro, Brazil.

Background: Pyrethroids are commonly used insecticides in Brazil. Gestational and early childhood exposure to pyrethroids has been linked to adverse health effects, including neurodevelopmental delays, behavioral issues, and endocrine disruption. This study evaluated the exposure of pregnant women and their children to pyrethroid insecticides in Rio de Janeiro, Brazil. Methods: Creatinine-adjusted levels of the pyrethroid metabolites 3-phenoxy benzoic acid (3-PBA) and 4-fluoro-3-phenoxybenzyl acid (4-FPBA) were measured in the urine of 142 pregnant women and their children at birth and in the first, third, and 6th months of life. Results: The geometric mean (GM) and 95% confidence interval (95% CI) of 3-PBA and 4-FPBA urinary concentrations in pregnant women were 0.50 (0.37-0.67) and 0.37 (0.05-2.90) ng/mg, detected in 47.2 and 10.6%, respectively. Urinary concentrations of 3-PBA in the children were 0.18 (0.15-0.23) ng/mg at birth, 0.36 (0.08-1.56) ng/mg at 1-month-old, 0.68 (0.36-1.27) ng/mg at 3-month-old, and 1.36 (0.77-2.42) ng/mg at 6-month-old, and the detection rates were respectively 10.8, 9.4, 20.9, and 20.7%. Discussion: This study is one of the few that has evaluated the urinary concentrations of pyrethroids in newborns and children in their 1st year of life. The results of this study show that children's exposure to pyrethroids significantly increases after birth.

Genetic variability in the neurobiology of nicotine dependence: effects on smoking behavior / A variabilidade genética na neurobiologia da adição à nicotina: reflexos no comportamento tabágico

Abstract Background Smoking dependence is a chronic disease and a public health problem. The neurobiology of nicotine addiction can explain smoking behavior. This system has genetic variability that has been associated with vulnerability to dependence. Genetic variability in the neurobiology of smoking can help to understand why individuals exposed to drugs may or may not become addicted. Objective This study aims to address genetic variability in the neurobiology of smoking addiction with a focus on polymorphic genes related to the nicotinic response and the dopaminergic reward pathway. Method This work involved a search of the main scientific research on genetic variability in the neurobiology of smoking and its effects on smoking behavior. One hundred and five studies were selected, most of which highlighted polymorphisms in the genes of nicotinic receptors, dopamine receptors, and nicotine metabolism. Results The majority of studies have focused on genes related to the activation of the dopaminergic reward system by nicotine. Combinations between different polymorphisms were also highlighted, showing that interactions can determine a genetic profile of predisposition to smoking addiction. Additionally, gender and ethnicity were identified as relevant factors. Conclusion Knowledge of the genetic bases involved in the individual response to smoking can enable a better understanding of inter-individual differences in smoking behavior, and contribute to improving the treatment of addiction.

Resumo Introdução A dependência nicotínica é uma doença crônica e um problema de saúde pública. O comportamento tabágico pode ser explicado pela neurobiologia da adição, cujas variações genéticas têm sido associadas à dependência. A variabilidade genética na neurobiologia do tabagismo pode ajudar a entender por que indivíduos expostos a drogas podem ou não se tornar viciados. Objetivo Este estudo tem como objetivo abordar a variabilidade genética na neurobiologia do tabagismo com foco em genes polimórficos relacionados à resposta nicotínica e à via de recompensa dopaminérgica. Método Uma pesquisa foi realizada nas principais bases de dados científicos sobre a variabilidade genética na neurobiologia do tabagismo e seus efeitos no comportamento do tabagismo. 105 estudos foram selecionados, em sua maioria destacando polimorfismos nos genes de receptores nicotínicos, receptores de dopamina e de metabolismo da nicotina. Resultados A maioria dos estudos concentrou-se em genes relacionados à ativação do sistema de recompensa dopaminérgico pela nicotina. Determinadas combinações entre genótipos de diferentes polimorfismos também se destacaram, mostrando que interações gênicas podem determinar um perfil genético de predisposição ao tabagismo. Além disso, gênero e etnia foram identificados como fatores relevantes. Conclusão O conhecimento das bases genéticas envolvidas na resposta individual ao tabagismo pode permitir uma melhor compreensão das diferenças interindividuais no comportamento tabágico e contribuir para melhoria dos tratamentos disponíveis para a dependência.

Regulação de resíduos de agrotóxicos em alimentos no MERCOSUL: discussão necessária para vigilância sanitária / Regulation of pesticide residues in food in the MERCOSUR: a much needed discussion for health surveillance / Regulación de los residuos de productos agrotóxicos en los alimentos en el MERCOSUR: una discusión necesaria para la vigilancia de la salud

RESUMO O objetivo deste estudo descritivo e exploratório, de base qualitativa, foi identificar as resoluções do MERCOSUL sobre resíduos de agrotóxicos em alimentos publicadas entre 1991 e 2022, analisando os processos de harmonização regional desses marcos e sua incorporação ao arcabouço regulatório dos Estados Partes fundadores do bloco (Argentina, Brasil, Paraguai e Uruguai). A análise identificou pontos importantes para a regulação e o monitoramento de resíduos de agrotóxicos em alimentos no MERCOSUL, como as sinonímias utilizadas na definição de agrotóxicos e a abrangência do sistema regulatório de cada país, as marcadas diferenças no alcance dos principais marcos regulatórios nacionais, a incorporação desigual de regulamentos internacionais e regionais pelos Estados Partes e os desafios para a harmonização da legislação sobre resíduos de agrotóxicos em alimentos no âmbito do MERCOSUL. Para além dos limitados avanços observados na tentativa de harmonizar a legislação pertinente dentro do bloco, observa-se a necessidade de avançar, nacional e regionalmente, nos processos regulatórios sobre resíduos de agrotóxicos em alimentos, garantindo a qualidade dos produtos e serviços ofertados à população e fortalecendo, assim, um comércio de alimentos mais seguros e produzidos a partir de processos menos prejudiciais ao ambiente no MERCOSUL.

ABSTRACT The objective of this descriptive and exploratory study with a qualitative basis was to identify MERCOSUR resolutions on pesticide residues in food issued between 1991 and 2022, analyzing the regional harmonization processes of these milestones and their incorporation into the regulatory framework of MERCOSUR founding Member States (Argentina, Brazil, Paraguay, and Uruguay). The analysis identified important points for the regulation and monitoring of pesticide residues in food in MERCOSUR, such as the synonyms used in the definition of pesticides and the scope of the regulatory system in each country, the marked differences in the scope of the main national regulatory frameworks, the unequal incorporation of international and regional regulations by the Member States and the challenges for harmonizing legislation on pesticide residues in food within MERCOSUR. In addition to the limited advances observed in the attempt to harmonize the relevant legislation within the bloc, there is a need to advance, nationally and regionally, in the processes to regulate pesticide residues in food, so as to ensure the quality of the products and services provided to the population and also to strengthen safer agro/food trade that relies on processes that are less harmful to the environment.

RESUMEN El objetivo de este estudio descriptivo y exploratorio, de base cualitativa, fue identificar las resoluciones del MERCOSUR sobre la gestión de residuos de productos agrotóxicos en los alimentos publicadas entre los años 1991 y 2022 y analizar los procesos de armonización regional de esos marcos y su incorporación al marco regulatorio de los Estados Partes fundadores del bloque (Argentina, Brasil, Paraguay y Uruguay). En el análisis se identificaron puntos importantes para la regulación y el seguimiento de la gestión de residuos de productos agrotóxicos en los alimentos en el MERCOSUR, tales como los sinónimos utilizados en la definición de productos agrotóxicos y la amplitud del sistema regulatorio de cada país, las diferencias más destacadas en el alcance de los principales marcos regulatorios nacionales, la desigualdad de la incorporación de los reglamentos regionales e internacionales por parte de los Estados Partes y los desafíos para la armonización de la legislación sobre residuos de productos agrotóxicos en los alimentos en el ámbito del MERCOSUR. Además de los limitados avances observados en el intento de armonizar la legislación pertinente dentro del bloque, existe la necesidad de avanzar, a nivel nacional y regional, en los procesos regulatorios sobre la gestión de residuos de productos agrotóxicos en los alimentos, asegurando la calidad de los productos y servicios ofrecidos a la población y fortaleciendo así el comercio de alimentos más inocuos producidos a partir de procesos menos nocivos para el medioambiente en el MERCOSUR.

Multibiomarker approach in fish to assess a heavily polluted Brazilian estuary, Guanabara Bay.

Brazil's Guanabara Bay (GB), located in Rio De Janeiro, is a deeply contaminated, eutrophic waterbody that challenges the understanding of the effects of pollutants on the biota. This paper presents a strategy to evaluate the impact of contamination utilizing a multibiomarker approach in two fish species: corvine (Micropogonias furnieri) and burrfish (Chilomycterus spinosus). The strategy is comprised of a general biomarker of fish' physical condition, the condition factor (CF), and specific biomarkers of pollutant exposure such as acetylcholinesterase (AChE), metallothionein (MT) activity and biliary polycyclic aromatic hydrocarbons (PAH) metabolites. Our results indicate that fish from GB are greatly affected by environmental pollution. CF values were lower in fishes from GB than in the reference site indicating that these fishes were under higher environmental stress. Lower AChE activity level in both species showed vulnerability to the presence of pesticide residues. Higher levels of MT in both species in GB reflect the consequences of heavy metal exposure in the bay, in spite of their bioavailability being restricted specially by the high organic matter content of GB. The levels of PAHs were higher in GB for both fish species, indicating exposure to these substances. However, the fish species showed different behavior regarding the origin of the PAHs. The multibiomarker approach used in this study evidently depicted effects on the health of fish in a waterbody with a complex polluted situation and further categorized the effects of anthropogenic activities in this aquatic system.

Urine proteomics as a non-invasive approach to monitor exertional rhabdomyolysis during military training.

Exertional rhabdomyolysis (ERM), a condition often associated with strenuous exercise, a common practice in the military activities, can be defined as the process of injury and rupture of muscle cell membranes, with leakage of its components into the bloodstream. Creatine kinase (CK) has been used for ERM diagnosis, albeit several studies reported the discrepancy between CK levels and clinical signs or symptoms. In this study, we analyzed the biochemical profile of the blood, and the urinary proteome of ten marine soldiers in a special training course. The samples were collected in two periods, M1 and M2, which correspond to the lowest and highest CK levels during training, respectively. Quantitative urinary proteome profile of M1 and M2 showed changes in proteins involved in immune system and cell adhesion-related pathways after strenuous physical exercise. Changes in the abundance of several proteins was observed in individuals carrying genetic polymorphisms related to greater risk for muscle damage. A panel of proteins (CTSH, PIK3IP1, DEFB1, ITGB1, BCAN, and TNFRSF10C) presented high correlation with classical blood biochemical markers of ERM and AGT MET235Thr and ACE I/D polymorphisms. These proteins represent potential urine markers of muscle damage due to intense physical conditions such as military training activities. SIGNIFICANCE: This study analyzed the blood and urine of a cohort of marine soldiers enrolled in a special training program including missions with low and high exposure to strenuous exercise. The biochemical blood profile, polymorphisms mapping and mass spectrometry-based analyses of the urinary proteome was evaluated in such a controlled samples. A total of 226 urinary proteins associated to immune system, cell adhesion and redox homeostasis were significantly changes during ERM shedding lights on the disease pathogenesis. In particular, a panel of six proteins were associated to classical ERM markers and could be used as early non invasive biomarkers.

Persistent Organic Pollutant Levels in Maternal and Cord Blood Plasma and Breast Milk: Results from the Rio Birth Cohort Pilot Study of Environmental Exposure and Childhood Development (PIPA Study).

Levels of polychlorinated biphenyls (PCB) and organochlorine pesticides (OCP) were evaluated in the breast milk and maternal and umbilical cord blood of pregnant women and their newborns in Rio de Janeiro, Brazil. The concentration of 11 PCB and 17 OCP were measured in 135 samples of maternal, and 116 samples of cord blood plasma, as well as 40, 47, and 45 samples of breast milk at 1st, 3rd, and 6th months after birth, respectively, using gas chromatography-mass spectrometry (GC-MS-MS). Women were asked to answer an enrollment questionnaire with reproductive, lifestyle, residential and sociodemographic questions. The most commonly detected OCPs and PCBs in the maternal and cord blood were 4,4'-DDE; ß-HCH; É£-HCH; and PCB 28. 4,4'-DDE was also the most commonly detected OCP in breast milk samples. Although not statistically significant, ∑DDT levels were higher among women with pregestational BMI ≥ 30, and who were non-white and older (age > 40). Newborns with an Apgar score ≤ 8 at minute 5 of life showed significantly higher levels of ∑DDT in the cord blood. Persistent OCPs and PCBs were still detected in maternal and umbilical cord blood and breast milk, even after decades of their banishment in Brazil. They may pose a risk to maternal, fetal and children's health.

As Cores do Tabagismo: Relação entre Raça e Consumo de Tabaco no Brasil / The Colors of Smoking: Relationship Between Race and Tobacco Use in Brazil / Los Colores del Fumar: Relación entre Raza y Uso de Tabaco en Brasil

A relação entre raça (e etnicidade) e adoecimento no Brasil é bastante sólida e evidente. A cor da pele de um indivíduo influencia significativamente na sua vida, no seu adoecimento e morte. Como exemplo atual sobre o tema, cabe mencionar a relação entre a mortalidade da doença pelo coronavírus 2019 (do inglês, coronavirus disease 2019 - covid-19) e a raça, cuja população de pretos tem uma taxa de mortalidade mais alta do que os brancos

Maternal consumption of ultra-processed foods and newborn exposure to perfluoroalkyl substances (PFAS).

Evolving evidence shows that ultra-processed food consumption may increase exposure to chemicals used in food packaging and production, such as per- and poly-fluoroalkyl substances, phthalates, and bisphenols. Studies suggested that these contaminants may be transferred from mother to child through placenta, increasing concerns for both maternal and child health. This study aimed to investigate the association of maternal consumption of ultra-processed foods with newborn exposure to perfluoroalkyl substances (PFAS) in the PIPA Project (The Rio Birth Cohort Study on Environmental Exposure and Childhood Development). The pilot cohort study conducted with 131 pregnant women-child pairs in a public maternity school in Rio de Janeiro, Brazil, was assessed. Maternal dietary intake in the third trimester of pregnancy was evaluated using a qualitative food frequency questionnaire. Food items were classified as non-ultra-processed food and ultra-processed food using the NOVA system and regular consumption of ultra-processed foods was estimated. Newborns of pregnant women who weekly consumed three or more subgroups of ultra-processed food presented the highest level of PFAS (2.47ng/mL; 95%CI: 1.22; 3.72), compared to non-consumption of ultra-processed food investigated (0 ultra-processed food = 1.86ng/mL; 95%CI: 1.38; 2.50). Additionally, cluster analysis grouped ultra-processed food, fish, and PFAS levels. In conclusion, we found increased levels of PFAS in newborns whose mothers were higher consumers of ultra-processed foods.

Health without filters: the health and environmental impacts of cigarette filters. / Saúde sem filtro: os impactos dos filtros dos cigarros na saúde e no meio ambiente.

Tobacco-related diseases kill eight million people worldwide ever year and are responsible for thousands of cases of cancer, cardiovascular disease and other illnesses in Brazil. Cigarette filters are believed by many to reduce the health risks of smoking. This article outlines the history of the technology of filters and discusses the impacts of these cigarette design features and their regulation. We conducted a literature review to assess the impacts of this technology. The results show that filters were initially developed for aesthetic purposes and later improved and marketed as a harm reduction technology. The most widely-used filters are those made of cellulose acetate with or without activated carbon. Despite smokers' beliefs and advertising claims, filters have no health benefits and filter tip ventilation can increase the health risks of smoking. Filters can also make cigarettes more appealing and cause significant environmental impacts. Cigarette filters have no health benefits and lull smokers into a false sense of security and should therefore be banned.

As doenças relacionadas ao tabaco matam oito milhões de pessoas anualmente no mundo e, no Brasil, são responsáveis por milhares de casos de cânceres, doenças cardiovasculares e outras enfermidades. Os filtros nos cigarros são percebidos como uma tecnologia que reduziria os danos à saúde. O objetivo deste artigo é descrever a tecnologia dos filtros, seu histórico, seus impactos e discutir formas de regulação. Foi feita uma busca na literatura para avaliar os impactos desta tecnologia. Os resultados mostram que os filtros foram inicialmente desenvolvidos para fins estéticos, e posteriomente aprimorados e promovidos como uma tecnologia para redução de danos. O filtro de cigarro mais utilizado é o de acetato de celulose, combinado ou não com carvão ativado. Apesar das propagandas e da percepção dos fumantes, os filtros não trazem nenhum benefício à saúde, e sua associação com tecnologias como a perfuração nas ponteiras podem trazer mais riscos à saúde. Os filtros também podem tornar os cigarros mais atrativos e causam impactos ao meio ambiente. Por proporcionarem uma falsa percepção de riscos e nenhum benefício, os filtros deveriam ser uma tecnologia proibida.

Risk factors and future directions for preventing and diagnosing exertional rhabdomyolysis.

Exertional rhabdomyolysis may occur when an individual is subjected to strenuous physical exercise. It is occasionally associated with myoglobinuria (i.e. "cola-colored" urine) alongside muscle pain and weakness. The pathophysiology of exertional rhabdomyolysis involves striated muscle damage and the release of cellular components into extracellular fluid and bloodstream. This can cause acute renal failure, electrolyte abnormalities, arrhythmias and potentially death. Exertional rhabdomyolysis is observed in high-performance athletes who are subjected to intense, repetitive and/or prolonged exercise but is also observed in untrained individuals and highly trained or elite groups of military personnel. Several risk factors have been reported to increase the likelihood of the condition in athletes, including: viral infection, drug and alcohol abuse, exercise in intensely hot and humid environments, genetic polymorphisms (e.g. sickle cell trait and McArdle disease) and epigenetic modifications. This article reviews several of these risk factors and proposes screening protocols to identify individual susceptibility to exertional rhabdomyolysis as well as the relevance of proteomics for the evaluation of potential biomarkers of muscle damage.

Food consumption according to the degree of processing, dietary diversity and socio-demographic factors among pregnant women in Rio de Janeiro, Brazil: The Rio Birth Cohort Study of Environmental Exposure and Childhood Development (PIPA project).

BACKGROUND: Relevant evidence has addressed the negative impact of food processing on health. However, maternal ultra-processed food consumption is poorly investigated. AIM: To analyze food consumption according to the degree of food processing, dietary diversity, and associated socio-demographic factors during pregnancy. METHODS: Cross-sectional data was taken from a birth cohort in Rio de Janeiro, Brazil, with 142 pregnant women. We assessed diet using a qualitative food frequency questionnaire and classified food items according to the NOVA classification system as non-ultra-processed-foods and ultra-processed-foods. Non-ultra-processed-food and ultra-processed-food scores were calculated, reflecting weekly intake of more than one subgroup. Dietary diversity of the non-ultra-processed-food diet fraction was described according to the Food and Agriculture Organization guidelines. The association between food consumption and socio-demographic factors were investigated using logistic regression models. RESULTS: Over 60% of the pregnant women reported consumption of at least three non-ultra-processed-food groups. However, only 25% had adequate dietary diversity. The level of education (Complete high school: odds ratio, 5.36; 95% confidence interval, 1.73-16.65) was associated with regular intake of "meat and eggs." Among the ultra-processed-food score, 27% of the participants described a weekly consumption of at least two ultra-processed-food subgroups. White women (odds ratio, 2.63; 95% confidence interval, 1.05-6.63) had a higher chance of reporting "packaged ready meals" consumption. CONCLUSIONS: This study shows a high weekly consumption of ultra-processed-food subgroups and low dietary diversity of the non-ultra-processed-food fraction of the diet of pregnant women in Brazil. Our results elucidate the influence of socio-demographic characteristics on diet quality during pregnancy.

Maternal consumption of ultra-processed foods and newborn exposure to perfluoroalkyl substances (PFAS) / O consumo materno de alimentos ultraprocessados e exposição intrauterina a compostos perfluoroalquil (PFAS) / Consumo materno de comidas ultraprocesadas y exposición de recién nacidos a sustancias perfluoroalquílicas (PFAS)

Abstract: Evolving evidence shows that ultra-processed food consumption may increase exposure to chemicals used in food packaging and production, such as per- and poly-fluoroalkyl substances, phthalates, and bisphenols. Studies suggested that these contaminants may be transferred from mother to child through placenta, increasing concerns for both maternal and child health. This study aimed to investigate the association of maternal consumption of ultra-processed foods with newborn exposure to perfluoroalkyl substances (PFAS) in the PIPA Project (The Rio Birth Cohort Study on Environmental Exposure and Childhood Development). The pilot cohort study conducted with 131 pregnant women-child pairs in a public maternity school in Rio de Janeiro, Brazil, was assessed. Maternal dietary intake in the third trimester of pregnancy was evaluated using a qualitative food frequency questionnaire. Food items were classified as non-ultra-processed food and ultra-processed food using the NOVA system and regular consumption of ultra-processed foods was estimated. Newborns of pregnant women who weekly consumed three or more subgroups of ultra-processed food presented the highest level of PFAS (2.47ng/mL; 95%CI: 1.22; 3.72), compared to non-consumption of ultra-processed food investigated (0 ultra-processed food = 1.86ng/mL; 95%CI: 1.38; 2.50). Additionally, cluster analysis grouped ultra-processed food, fish, and PFAS levels. In conclusion, we found increased levels of PFAS in newborns whose mothers were higher consumers of ultra-processed foods.

Resumo: Evidências crescentes demonstram que o consumo de alimentos ultraprocessados pode aumentar a exposição a substâncias químicas utilizadas na produção e embalagem desses alimentos, como os compostos per- e polifluoroalquil, ftalatos e bisfenóis. Os estudos sugerem que esses contaminantes podem ser transferidos da mãe para o feto pela via transplacentária, o que aumenta as preocupações em relação à saúde tanto materna quanto infantil. O estudo buscou investigar a associação entre o consumo materno de alimentos ultraprocessados e a exposição intrauterina aos compostos perfluoroalquil (PFAS) no Projeto PIPA Rio - Projeto Infância e Poluentes Ambientais. Foi avaliada a coorte-piloto com 131 pares gestante-feto em uma maternidade-escola pública no Rio de Janeiro. A ingestão materna no terceiro trimestre da gestação foi avaliada com um questionário qualitativo de frequência alimentar. Os itens alimentares foram classificados entre não ultraprocessados e ultraprocessados, usando o sistema NOVA, e foi estimado o consumo regular de ultraprocessados. Os PFAS foram medidos no sangue do cordão umbilical. Os recém-nascidos de mães que haviam consumido três ou mais subgrupos de ultraprocessados por semana apresentaram os níveis séricos mais elevados de PFAS (2,47ng/mL; IC95%: 1,22; 3,72), comparado com nenhum consumo dos subgrupos de alimentos ultraprocessados (0 alimento ultraprocessado = 1,86ng/mL; IC95%: 1,38; 2,50). Além disso, a análise de clusters agrupou ultraprocessados, peixe e níveis de PFAS. Em conclusão, o estudo mostrou níveis elevados de PFAS em neonatos de gestantes com maior consumo de alimentos ultraprocessados.

Resumen: Evidencias recientes han mostrado que el consumo de comida ultraprocesada puede incrementar la exposición a sustancias químicas usadas en el empaquetado de comida y producción, tales como las sustancias per- y poli- fluoroalquílicas, ftalatos, y bisfenoles. Los estudios han sugerido que estos contaminantes pueden transmitirse de la madre al niño, a través de la placenta, incrementando los problemas de salud de la madre y el niño. El objetivo de este estudio fue investigar la asociación del consumo materno de comidas ultraprocesadas con la exposición de los recién nacidos a las sustancias perfluoroalquílicas (PFAS) en el Proyecto PIPA (Estudio de Cohorte de Nacimiento en Río sobre la Exposición Ambiental y Desarrollo en la Infancia). El estudio de la cohorte piloto evaluó a parejas constituidas por 131 mujeres embarazadas y sus hijo/as en una escuela de maternidad pública en Río de Janeiro, Brasil. Se evaluó la ingesta alimentaria materna en el tercer trimestre de embarazo, usando un cuestionario de calidad de frecuencia de la comida. Los ítems alimentarios fueron clasificados como no-comida ultraprocesada y comida ultraprocesada usando el sistema NOVA y se estimó el consumo regular de comidas ultraprocesadas. Las PFAS se determinaron en la sangre del cordón umbilical. Los recién nacidos de mujeres embarazadas que consumieron tres o más subgrupos de comidas ultraprocesada semanalmente presentaron el nivel más alto de PFAS (2,47ng/mL; IC95%: 1,22; 3,72), comparado con ninguno consumo de comida ultraprocesada (0 comida ultraprocesada = 1,86ng/mL; IC95%: 1,38; 2,50). Asimismo, el análisis de conglomerados agrupó comida ultraprocesada, pescado y niveles de PFAS. En conclusión, se encontraron niveles elevados de PFAS en recién nacidos, cuyas madres eran grandes consumidoras de comidas ultraprocesadas.

Rio Birth Cohort Study on Environmental Exposure and Childhood Development - PIPA Project.

Background/Objective: As a developing country, Brazil presents a wide range of environmental risks that can constitute hazards to child health. The country also presents different socio-economic-cultural conditions that could be responsible for determining different vulnerability and susceptibility levels for the population, which can potentiate the effects of the environmental pollutants. The Rio Birth Cohort Study (PIPA project) is a prospective maternal-infant health study, hosted in the city of Rio de Janeiro (Southeastern Brazil), designed to investigate separate and combined effects of environmental chemical pollutants, as well as the interactions between these exposures and sociocultural environment and epigenetic patterns. This paper presents the learned lessons and strategies to address the shortcomings detected from this pilot study. Methods: The study population will be all children born at the Federal University of Rio de Janeiro Maternity Hospital from July 1st, 2020 to June 30th, 2021. The estimated population is of 2,500 children. The study will collect social, demographic, and health information from pregnant women and their children up to four years of age. Biological samples from both mothers and newborns will be collected to assess metal, pesticide and plasticizer exposure. All newborns will have their landmarks of physical, neurological, psychological, and cognitive development recorded at specific ages. Findings: A pilot study was carried out between September 2017 and August 2018, totaling 142 enrolled pregnant women, leading to 135 (95%) births and the collection of umbilical cord (126-93%,) and mother (139-98%) blood samples, as well as both mother (142-100%) and newborn (54-40%) urine samples and newborn meconium samples (117-86.7%). Conclusions: The study proposes a comprehensive assessment of pre- and postnatal exposure to environmental chemicals at multiple time points in a population living in a highly urbanized developing country. As far as we know, this is the only birth cohort in Brazil specifically designed for this purpose.

Mechanisms and individuality in chromium toxicity in humans.

With regards to health, chromium (Cr) is an ambiguous chemical element. Although it is considered to be an important micronutrient, it also is connected with several pathologies, including carcinogenicity. The mechanism of action of Cr and its compounds in humans is not yet fully understood. Currently, three possible mechanisms have been proposed for carcinogenesis: Cr(VI)-induced multistage carcinogenesis, genomic instability, and epigenetic modification. Therefore, in addition to the toxicity of this metal and its ions, human susceptibility to Cr-induced pathologies depends on external factors and individual characteristics, such as enzymatic polymorphisms, carriers, endogenous reducing system, adduct formation and stability, and efficiency of DNA repair mechanisms, among other factors. In fact, the variability of individual molecular constitutive factors, such as individual polymorphisms, creates an individualized environment for Cr toxicity. This mini-review contemplates the essential variables in this process.