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16 resultados, página 1 de 2

Environmental Nanoparticles Reach Human Fetal Brains

LILIAN OFELIA CALDERON GARCIDUEÑAS ANGEL AUGUSTO PEREZ CALATAYUD ANGELICA GONZALEZ MACIEL RAFAEL REYNOSO ROBLES Héctor Gabriel Silva Pereyra Andrea Ramos Morales RICARDO TORRES JARDON Candelario de Jesús Soberanes Cerino Raúl Carrillo Esper JESÚS CARLOS BRIONES GARDUÑO Yazmin del Socorro Conde Gutiérrez (2022, [Artículo])

"Anthropogenic ultrafine particulate matter (UFPM) and industrial and natural nanoparticles (NPs) are ubiquitous. Normal term, preeclamptic, and postconceptional weeks(PCW) 8–15 human placentas and brains from polluted Mexican cities were analyzed by TEM and energy-dispersive X-ray spectroscopy. We documented NPs in maternal erythrocytes, early syncytiotrophoblast, Hofbauer cells, and fetal endothelium (ECs). Fetal ECs exhibited caveolar NP activity and widespread erythroblast contact. Brain ECs displayed micropodial extensions reaching luminal NP-loaded erythroblasts. Neurons and primitive glia displayed nuclear, organelle, and cytoplasmic NPs in both singles and conglomerates. Nanoscale Fe, Ti, and Al alloys, Hg, Cu, Ca, Sn, and Si were detected in placentas and fetal brains. Preeclamptic fetal blood NP vesicles are prospective neonate UFPM exposure biomarkers. NPs are reaching brain tissues at the early developmental PCW 8–15 stage, and NPs in maternal and fetal placental tissue compartments strongly suggests the placental barrier is not limiting the access of environmental NPs. Erythroblasts are the main early NP carriers to fetal tissues. The passage of UFPM/NPs from mothers to fetuses is documented and fingerprinting placental single particle composition could be useful for postnatal risk assessments. Fetal brain combustion and industrial NPs raise medical concerns about prenatal and postnatal health, including neurological and neurodegenerative lifelong consequences."

Environmental medicine Placental impairment Neurodevelopmental disorders Fetal brains Erythroblasts Preeclampsia Nanoparticles NPs extracellular vesicles Petrochemical pollution Villahermosa Tabasco BIOLOGÍA Y QUÍMICA QUÍMICA BIOQUÍMICA BIOQUÍMICA

Los médicos costarricenses formados en México durante el cardenismo: retorno e inserción laboral (1934-1961)

Costa Rican doctors trained in Mexico during the Cardenismo: return and labor insertion (1934-1961)

Marco Calderón-Blanco (2021, [Artículo])

El presente trabajo analiza el retorno de los estudiantes costarricenses que viajaron a México durante el cardenismo para cursar la carrera de medicina, con el fin de determinar su inserción laboral en el sistema de salud costarricense entre las décadas de 1940 y 1960. Se exploran las circunstancias que giraron alrededor del retorno y la inserción laboral de dichos profesionales. Al respecto, se evidencia que la integración a la fuerza de trabajo en el Hospital San Juan de Dios permitió un rápido ascenso en el escalafón médico. Esta dinámica posibilitó que un número considerable de los médicos tratados en el presente estudio ocupara puestos de poder en instituciones de salud costarricenses, situación que llevó a que se integraran al proceso de creación de la Escuela de Medicina de la Universidad de Costa Rica, la cual entró en funciones en el año de 1961.

The present work analyzes the return of Costa Rican students who traveled to Mexico during the cardenismo period to study medicine, in order to determine their labor insertion in the Costa Rican health system between the 1940s and 1960s. The circumstances surrounding the return and work insertion of these professionals are explored. In this regard, it is evident that the integration to the workforce of the San Juan de Dios Hospital allowed a rapid ascent in the medical ladder. This dynamic made it possible for a considerable number of the doctors treated in this study to hold positions of power in Costa Rican health institutions, a situation that led to their integration into the process of creating the University of Costa Rica’s School of Medicine, which became operational in 1961.

HUMANIDADES Y CIENCIAS DE LA CONDUCTA Medicina social Médicos costarricenses Cardenismo Retorno Inserción laboral Social medicine Costa Rican doctors Lázaro Cardenas government Return Labor insertion

Disruptive approach to integrate data in a digital environment: progress report CIMMYT-Bluenumber 2023

Andrea Gardeazabal (2023, [Documento de trabajo])

This report describes the process carried out a pilot project to evaluate a scalable disruptive approach to integrating data for agronomy research that also incentivizes sustainable production and enables traceability using open data sharing protocol with self-sovereign identity (SSI).

CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA DIGITAL TECHNOLOGY DATA AGRICULTURAL RESEARCH