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by Claudia Jaramillo-Mazo, Daniel Bravo, Diego Fernando Villanueva-Mejía, Javier Correa-Alvarez
Cadmium (Cd), a toxic heavy metal found in agricultural landscapes worldwide, has been pointed out in cropped soils with Theobroma cacao L., as one of the main contaminants that translocate into plant tissues. Among the factors linked to cadmium translocation into plants, the role of soil bacterial communities in chemical transformation in soils has been poorly investigated. Overall, soil bacterial communities are shaped by diverse environmental and anthropogenic factors that influence crop yield and health. Cadmium alters soil microbial communities and increases the risk to human health through plant uptake. Although the impacts of cadmium on soil bacteria have been studied in other crops, there is limited information on cacao. Thus, this study aimed to assess the responses of soil bacterial communities in cacao farms to cadmium exposure, both natural and spiked. A total of 225 rhizosphere soil samples were collected from 16 plots across five cacao farms in two Colombian departments. The complementary approaches used were: (i) 16S rDNA amplicon sequencing to assess the composition of the bacterial community in soils with natural Cd concentrations, and (ii) isothermal microcalorimetry (IMC) to measure the temporal metabolic responses of bacteria to Cd in closed systems for 80 hours at 25 °C. The findings suggest that nearly 28% of the bacterial community responds to high cadmium concentrations in soils, both in natural and experimental conditions. Field-based observations revealed that Cd-responsive taxa detected under natural soil conditions included several unculturable bacterial groups, whereas laboratory experiments with Cd spiking predominantly selected for previously characterized cadmium-tolerant bacteria (CdtB). Significant variation in natural Cd-bacterial community composition and Cd-related metabolic activity was observed across the farms. Moreover, Cd-responsive bacterial taxa exhibited increased abundance during Cd spikes. As expected, contrasting patterns were revealed by the activity-response measured by IMC and taxonomic analyses of 16S rRNA gene sequences.First Nations, Inuit and Métis Peoples in Canada continue to face significant disparities in healthcare access compared with non-Indigenous populations. Understanding their experiences in accessing healthcare is essential for addressing systemic barriers and promoting equitable, patient-centred care. Although existing studies have identified various barriers and facilitators to accessing healthcare, a lack of synthesised qualitative evidence delves into the intricacies of patients’ experiences. This systematic review aims to investigate Indigenous patients’ experiences with mainstream Canadian healthcare services and their recommendations for service improvement through a meta-synthesis of qualitative literature.
Meta-aggregation will be used to conduct a systematic review of qualitative studies and qualitative components of mixed-methods studies exploring experiences of Indigenous patients accessing mainstream healthcare services in Canada. Papers published in English will be searched using electronic databases, including MEDLINE, APA PsycINFO, CINAHL, Global Health, the Bibliography of Indigenous Peoples in North America and Web of Science. A comprehensive list of non-indexed and grey literature will also be searched to ensure the inclusion of community-based and non-peer-reviewed evidence. Studies meeting the inclusion criteria will be assessed for methodological quality using the Joanna Briggs Institute (JBI) Critical Appraisal Checklist for Qualitative Research and the Aboriginal and Torres Strait Islander Quality Appraisal Tool. The review will involve the extraction of findings, categorisation into themes and synthesis into broader insights guided by the JBI meta-aggregation approach. An Indigenous advisory committee will guide the process, including interpretation of findings and ensuring alignment with Indigenous health research principles.
Ethics approval is not required for this study as it is based on a secondary analysis of publicly available primary studies. The completed review will be published in a peer-reviewed manuscript. Findings will also be shared with relevant Indigenous organisations and community partners through plain-language summaries and community-engaged knowledge-sharing activities.
CRD420250656486.
Objetivo y Metodología: Este trabajo engloba una completa revisión de la literatura crítica sobre las investigaciones más relevantes y actuales en la evolución y postura de las diferentes estrategias en la reanimación neonatal. Resultados principales: Es necesario instaurar un soporte de transición al neonato en el periodo de adaptación, la demora en el pinzamiento del cordón umbilical será de al menos 1 minuto, la temperatura óptima en el neonato oscila entre 36,5-37,5ºC. El soporte ventilatorio en los prematuros, debería utilizarse inicialmente o bien aire o bien concentraciones bajas de oxígeno (hasta 30%). Si a pesar de una ventilación efectiva la oxigenación, siguiera siendo inaceptable, debería considerarse la utilización de concentraciones de oxígeno más elevadas. Conclusión principal: Los esfuerzos para mejorar la secuencia en la actuación ante una reanimación en los diferentes hospitales de forma consensuada y reducción de la incidencia de asfixia perinatal y morbi-mortalidad neonatal.
Rev Enferm;41(2): 96-100, feb. 2018. tab, ilus. [Artículo]
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