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Spatial and temporal variations of mercury (Hg) concentrations, enrichment, and potential ecological risks were studied in a suite of lead-210 (210Pb) dated sediment cores from 13 Wider Caribbean Region coastal environments. Broad variability of Hg concentrations (19-18761 ng g-1) was observed, encompassing even background levels (38-100 ng g-1). Most Hg concentration profiles exhibited a characteristic upward trend, reaching their peak values in the past two decades. Most of the sediment sections, showing from moderately to very severe Hg enrichment, were found in cores from Havana Bay and Sagua River Estuary (Cuba), Port-au-Prince Bay (Haiti), and Cartagena Bay (Colombia). These were also the most seriously contaminated sites, which can be considered regional Hg 'hotspots'. Both Havana Bay and Port-au-Prince Bay reportedly receive waste from large cities with populations exceeding 2 million inhabitants, and watersheds affected by high erosion rates. The records from the Sagua River Estuary and Cartagena Bay reflected historical Hg contamination associated with chloralkali plants, and these sites are of very high ecological risk. These results constitute a major contribution to the scarce regional data on contaminants in the Wider Caribbean Region and provide reference information to support the evaluation of the effectiveness of the Minamata Convention.

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Objectives. To describe the implementation of a novel disease surveillance model in Puerto Rico, the Municipal Case Investigation and Contact Tracing System for COVID-19, established during the pandemic as the primary response. Methods. We analyzed data from July 2020 to June 2021, including all COVID-19 cases reported by public and private laboratories in Puerto Rico to describe the accomplishments and limitations of the surveillance. Results. During the first year, the system was successfully implemented in all Puerto Rican municipalities, collecting data on more than 132 000 confirmed COVID-19 cases. It improved case investigation coverage, reduced laboratory reporting times, and facilitated community engagement for ongoing response enhancements. Conclusions. Surveillance systems of this scale were new to Puerto Rico's Health System, and there was a steep learning and improvement curve. This approach enabled tailored health education, equitable distribution of testing and treatments, and surveillance by educational institutions. Public Health Implications. Near-real-time epidemiological data publication promoted trust, education, and evidence-based policymaking. (Am J Public Health. 2024;114(S1):S96-S102. https://doi.org/10.2105/AJPH.2023.307493).

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Introducción: La úlcera del pie diabético representa una complicación de la diabetes mellitus. El Heberprot-P® es un medicamento para su tratamiento, cuyo principio activo resulta un factor de crecimiento humano que pudiera asociarse a la aparición de la enfermedad renal. Objetivo: Describir la evolución de la función renal posterior al tratamiento con Heberprot-P® en pacientes con úlcera del pie diabético. Métodos: Estudio descriptivo prospectivo en 90 pacientes con diagnóstico de úlcera del pie diabético tratados con Heberprot-P®. Se analizaron las variables: microalbuminuria, creatinina, ácido úrico y filtrado glomerular, al inicio, los 6 meses y el año postratamiento. Se determinaron frecuencias relativas de variables cualitativas, y media y desviación estándar de cuantitativas. Se realizaron prueba de Friedman para dos muestras independientes, U Mann Whitney y prueba de Chi cuadrado de independencia. Resultados: Las variables cuantitativas de función renal no variaron de forma significativa. Al inicio, el filtrado glomerular fue 67,1 ml/min; y tanto a los 6 meses como al año, 67,2 ml/min. La media de la creatinina a los 6 meses resultó 86,2 µmol/L; y al año, 86,1 µmol/L. El ácido úrico incrementó su valor de 331,7 mmol/L a 345,6 mmol/L a los 6 meses; y en 340 mmol/L, al año. La excreción urinaria de albúmina mejoró significativamente durante el estudio. Conclusiones: Los pacientes con úlcera de pie diabético tratados con Heberprot-P® no mostraron afectación de la función renal durante el primer año de tratamiento. La excreción urinaria de albúmina mejoró y el resto de las variables se mantuvieron estables(AU)

Introduction: Diabetic foot ulcer represents a complication of diabetes mellitus. Heberprot-P® is a medicine for its treatment, whose active substance is a human growth factor that could be associated with the onset of kidney disease. Objective: To describe the evolution of renal function after treatment with Heberprot-P® in patients with diabetic foot ulcer. Methods: Prospective descriptive study in 90 patients diagnosed with diabetic foot ulcer treated with Heberprot-P®. The variables analyzed were: microalbuminuria, creatinine, uric acid and glomerular filtration, at baseline, 6 months and post-treatment year. Relative frequencies of qualitative variables were determined, and mean and standard deviation of quantitative variables. Friedman test for two independent samples, U Mann Whitney and Chi square independence test were performed. Results: The quantitative variables of renal function did not vary significantly. At baseline, the glomerular filtrate was 67.1 ml/min; and at both 6 months and a year, 67.2 ml/min. The mean creatinine at 6 months was 86.2 µmol/L; and after a year, 86.1 µmol/L. Uric acid increased its value from 331.7 mmol/L to 345.6 mmol/L at 6 months; and at 340 mmol/L after a year. Urinary albumin excretion improved significantly during the study. Conclusions: Patients with diabetic foot ulcer treated with Heberprot-P® showed no impairment of renal function during the first year of treatment. Urinary albumin excretion improved and the rest of the variables remained stable(AU)

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BACKGROUND & AIMS: Evidence suggests that multiple-behavior interventions (with a specialist) have a greater impact on public health than single-behavior interventions, particularly in a chronic patient. However, there is little understanding of some very basic principles concerning multiple health behavior change, especially in situations such as kidney transplantation, which requires a great willingness to change negative lifestyle behaviors to achieve intermediate and long-term success. We compared healthy lifestyles and nutritional status according to the willingness to change dietary and exercise behavior in dialysis patients from a living donor kidney transplant program. METHODS: 400 dialysis patients had a dietetic, anthropometric, protein-energy wasting [subjective global assessment (SGA)] and biochemical evaluation. Lifestyle was evaluated with an adapted instrument to measure lifestyle in chronic disease. Willingness to change behaviors was evaluated by the trans-theoretical model; 2 groups were formed: willingness to change dietary and exercise behaviors and unwillingness to change. RESULTS: Willingness to change dietary behavior was 50% and exercise 25%. Patients with willingness to change dietary and exercise behaviors had better healthy lifestyle scores, and higher frequency of healthy food consumption. Healthy lifestyle score (R2 = 0.37, p < 0.0001) was predicted by older age, higher educational degree, shorter time on dialysis, and the highest willingness to change dietary and exercise behaviors. CONCLUSIONS: Willingness to change dietary and exercise behaviors was associated with healthy lifestyle, as well as with higher frequency of healthy food consumption and with lower frequency of unhealthy food consumption.

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We reconstructed the 2016-2017 Zika virus epidemic in Puerto Rico by using complete genomes to uncover the epidemic's origin, spread, and evolutionary dynamics. Our study revealed that the epidemic was propelled by multiple introductions that spread across the island, intricate evolutionary patterns, and ≈10 months of cryptic transmission.

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Caffeine is a commonly used stimulant of the central nervous system that reduces fatigue, increases alertness, and exerts positive effects on emotion through actions on various brain structures. High doses of caffeine can cause headaches, heart palpitations, hyperactivity, and anxiety symptoms. Consequently, reducing the consumption of stimulant substances, such as sugar and caffeine, is proposed to ameliorate symptoms of premenstrual syndrome in women. The administration of steroid hormones has been suggested to modulate the effects of caffeine, but unknown is whether endogenous hormone variations during the estrous cycle modulate the pharmacological effects of caffeine. The present study evaluated the effects of caffeine (10, 20, and 40 mg/kg) during metestrus-diestrus and proestrus-estrus of the ovarian cycle in rats on anxiety-like behavior using the elevated plus maze and light/dark box. During metestrus-diestrus, all doses of caffeine increased anxiety-like behavior, indicated by the main variables in both behavioral tests (i.e., higher Anxiety Index and lower percent time spent on the open arms in the elevated plus maze and less time spent in the light compartment in the light/dark box). During proestrus-estrus, only 20 and 40 mg/kg caffeine increased these parameters of anxiety-like behavior, albeit only slightly. In conclusion, caffeine increased anxiety-like behaviors in metestrus-diestrus, with an attenuation of these effects of lower doses of caffeine in proestrus-estrus. These effects that were observed in metestrus-diestrus and proestrus-estrus may be associated with low and high concentrations of steroid hormones, respectively, that naturally occur during these phases of the ovarian cycle.

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The aim of this work was to determine the in vitro antihypertensive activities of lactobacillus (L. plantarum and L. helveticus) prepared amaranth protein hydrolysates, to determine the contribution of zinc, and to identify peptides. Depending on the bacteria species and the duration of the hydrolysis, up to 45.9% inhibition of angiotensin converting enzyme (ACE) was obtained. Size separation of the most active hydrolysates to yield < 1, <3-1, <3, <10-3 and < 10 kDa fractions enhanced ACE inhibition by 2-fold. A mixed mechanism of inhibition is proposed due to low correlation of ACE and zinc chelation. Thirty-six peptides were identified in the fractions using tandem mass spectrometry. A bioinformatic analysis showed the presence of encrypted fragments such as GVSEE or VNVDDPSK with known ACE-inhibitory properties. In conclusion, lactic acid bacteria proteases released peptides from amaranth proteins with ACE-inhibitory properties that were related to the presence of peptides with known or predicted ACE-inhibitor motifs.

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Lesions caused by high glucose (HG), hypoxia/reperfusion (H/R), and the coexistence of both conditions in cardiomyocytes are linked to an overproduction of reactive oxygen species (ROS), causing irreversible damage to macromolecules in the cardiomyocyte as well as its ultrastructure. Fenofibrate, a peroxisome proliferator-activated receptor alpha (PPARα) agonist, promotes beneficial activities counteracting cardiac injury. Therefore, the objective of this work was to determine the potential protective effect of fenofibrate in cardiomyocytes exposed to HG, H/R, and HG+H/R. Cardiomyocyte cultures were divided into four main groups: (1) control (CT), (2) HG (25 mM), (3) H/R, and (4) HG+H/R. Our results indicate that cell viability decreases in cardiomyocytes undergoing HG, H/R, and both conditions, while fenofibrate improves cell viability in every case. Fenofibrate also decreases ROS production as well as nicotinamide adenine dinucleotide phosphate oxidase (NADPH) subunit expression. Regarding the antioxidant defense, superoxide dismutase (SOD Cu2+/Zn2+ and SOD Mn2+), catalase, and the antioxidant capacity were decreased in HG, H/R, and HG+H/R-exposed cardiomyocytes, while fenofibrate increased those parameters. The expression of nuclear factor erythroid 2-related factor 2 (Nrf2) increased significantly in treated cells, while pathologies increased the expression of its inhibitor Keap1. Oxidative stress-induced mitochondrial damage was lower in fenofibrate-exposed cardiomyocytes. Endothelial nitric oxide synthase was also favored in cardiomyocytes treated with fenofibrate. Our results suggest that fenofibrate preserves the antioxidant status and the ultrastructure in cardiomyocytes undergoing HG, H/R, and HG+H/R preventing damage to essential macromolecules involved in the proper functioning of the cardiomyocyte.

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Introducción: El proceso de morir se ha desplazado a lo largo de la historia desde la familia y el hogar hasta los profesionales de salud y los hospitales. Cuidar demanda actitudes, conocimientos y destrezas que se deben adquirir y perfeccionarse durante la formación disciplinar. Objetivo: Explorar las actitudes que muestra el personal de enfermería que labora en áreas hospitalarias críticas ante el proceso de la muerte de pacientes. Materiales y métodos: Estudio descriptivo de corte transversal, bajo un muestreo no probabilístico por conveniencia se obtuvo una muestra final de 71 enfermeras profesionales que laboran en áreas críticas de dos hospitales de alta especialidad en Tabasco, México. El instrumento utilizado fue "Actitudes ante la muerte" (CAM-2), traducido del original de Martin y Salovely. Resultados: Los profesionales de enfermería que participaron en el estudio tienen una edad promedio de 32.5 años (DE=7), donde el 71.8% de los participantes pertenecen al sexo femenino. El 67.6% del personal de enfermería muestra una actitud de indiferencia ante la muerte, solo un 9.9% muestra una actitud positiva. Con relación a la perspectiva de actitud de temor el 46.5% manifiesta que pensar en la muerte les genera ansiedad, mientras que el 39.4% ve la muerte de los pacientes como algo natural. Conclusiones: El personal de enfermería posee sentimientos de indiferencia ante el cuidado del paciente ante la muerte, sin embargo, consideran que aceptar su propia muerte los lleva a cuidar con más libertad.

Introduction: The dying process has historically shifted from family and home settings to healthcare professionals and hospital settings. Caring involves attitudes, knowledge and skills that should be acquired and honed through nursing training. Objective: To explore nursing staff attitudes who work in critical hospital departments when faced with the process of dying patients. Materials and Methods: A descriptive cross-sectional study was conducted using a non-probability convenience sampling, from which a final sample of 71 professional nurses who work in critical departments of higher-level specialty hospitals in Tabasco, Mexico was obtained. The CAM-2 Attitudes Towards Death instrument originally developed by Martin & Salovely was translated and applied. Results: The average age of nursing professionals participating in this study were 32.5 years (SD=7), of which 71.8% were women. 67.6% of nurses had an attitude of indifference to death and only 9.9% had a positive attitude. From an attitude of fear perspective, 46.5% of the nurses expressed that thinking about death causes them anxiety, while 39.4% considered the death of patients as something natural. Conclusions: Nursing staff feel indifferent to patient care when facing death. However, nurses believe that accepting their own death leads them to care more freely.

Introdução: O processo de morte passou ao longo da história da família e do lar para profissionais de saúde e hospitais. O cuidado exige atitudes, conhecimentos e habilidades que devem ser adquiridos e aperfeiçoados através do treinamento de enfermagem. Objetivo: Explorar as atitudes dos profissionais de enfermagem que trabalham em áreas hospitalares críticas frente ao processo de morte de pacientes. Materiais e Métodos: Estudo descritivo transversal com base em uma amostragem não-probabilística por conveniência, foi obtida uma amostra final de 71 enfermeiros profissionais que trabalham em áreas críticas de hospitais especializados em alta complexidade em Tabasco, México. O instrumento CAM-2 Atitudes frente à morte originalmente desenvolvido pela Martin & Salovely foi traduzido e aplicado. Resultados: A idade média dos profissionais de enfermagem que participaram deste estudo foi de 32,5 anos (SD=7), onde 71,8% dos participantes eram do sexo feminino. 67,6% dos enfermeiros mostraram uma atitude de indiferença em relação à morte e apenas 9,9% mostraram uma atitude positiva. Em relação à perspectiva de uma atitude de medo, 46,5% dos enfermeiros expressaram que pensar na morte gera ansiedade, enquanto 39,4% consideraram a morte dos pacientes como algo natural. Conclusões: Os profissionais de enfermagem se sentem indiferentes em relação aos cuidados do paciente frente à morte. No entanto, eles sentem que aceitar sua própria morte os leva a cuidar mais livremente.

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Systemic injections of the flavonoid chrysin (5,7-dihydroxyflavone) exert anxiolytic-like effects in ovariectomised and cycling female rats through actions on gamma-aminobutyric acid-A (GABA A ) receptors; however, it is unknown if chrysin directly acts on brain structures that are involved in regulating emotional processes, such as the hippocampus. The present study evaluated the effects of intrahippocampal microinjections of 0.25, 0.5, and 1 µg of chrysin on anxiety-like behaviour in the elevated plus maze (EPM) and locomotor activity test (LAT) in female rats in proestrus and dioestrus. Similar doses of the neurosteroid allopregnanolone were used as a reference GABAergic anxiolytic drug. The participation of the GABA A /benzodiazepine receptor complex was evaluated by administering the antagonists picrotoxin, bicuculline and flumazenil. In proestrus, 0.5 and 1 µg of chrysin and allopregnanolone induced anxiogenic-like behaviour. In dioestrus, chrysin, and allopregnanolone (0.5 µg) induced anxiolytic-like effects. Picrotoxin, bicuculline and flumazenil prevented the effects of chrysin and allopregnanolone in both proestrus and dioestrus. None of the treatments significantly affected locomotor activity. These results indicate that the GABA A /benzodiazepine receptor complex in the dorsal hippocampus regulates the effects of chrysin on anxiety-like behaviour, similar to the actions of allopregnanolone. The divergent effects of treatments across the oestrous cycle phases suggest complex interactions between GABA A receptors and compounds with an anxiolytic potential.