CiatUsac

14/11/2025

La enfermedad renal crónica (ERC) es una creciente crisis de salud mundial. Aunque gran parte de su impacto es prevenible, no recibe la atención política que merece.

14/11/2025

14/11/2025

📣Extendemos la cordial invitación a nuestra próxima actividad de actualización profesional, última del año 2025‼️

👉Inscríbete en el link: https://forms.gle/BDUGRWa9uaVe9TxB6
🗓️ Fecha: jueves 20 de noviembre del 2025
🕙 Hora: 10:00 horas (Ciudad de Guatemala)
💻 Medio: Plataforma Zoom para Videoconferencias
💡 Tema: "Farmacogenómica en la seguridad y eficacia del tratamiento del cáncer"
🧑‍🏫 Conferencista: MSc. Susan Calfunao Caro, desde Chile
¡Actividad sin costo, se brindará constancia de participación!

14/11/2025

13/11/2025

El Global Carbon Budget 2025 alerta de que las emisiones fósiles crecen un 1,1 %, impulsadas por el uso persistente de carbón, petróleo y gas. Los científicos advierten que el presupuesto de carbono compatible con el objetivo de 1,5 °C se agotará antes de 2030.

13/11/2025

The November 2025 issue of Toxicological Sciences includes a Contemporary Review that explains how new approach methodologies (NAMs) are gaining increased popularity for toxicological testing and even mechanistic research. An In-Depth Review underscores the need for targeted studies that address how common co-exposures to PFAS and alcohol may intensify liver pathology, the value of a systems biology approach for future investigations, and the importance of implementing strategies to mitigate these synergistic hazards. A Forum article shows how toxicology is shifting toward predictive, mechanism-based approaches that support quicker, more human-relevant risk assessments and reduce reliance on animal testing. Two ToxPoint articles talk about the case for equilibrative nucleoside transporters in current regulatory guidance and the indispensable role of zebrafish as a NAM. Additionally, one article’s findings provide a foundation for understanding the reproductive toxicity of PFAS across exposure scenarios, while another suggests that PAD4 affects liver injury uniquely, depending on the stage of disease and that mechanisms of NET formation may occur independent of PAD4 in chronic liver injury. Discover the latest impactful research in toxicology in the November 2025 issue of ToxSci: Your science. Your journal. https://academic.oup.com/toxsci/issue/208/1

10/11/2025

La evidencia científica apunta a que la contaminación atmosférica no solo afecta al corazón y los pulmones. También se vincula con alteraciones en el metabolismo que incrementan el riesgo de diabetes, obesidad y síndrome metabólico.

10/11/2025

At each end of our chromosomes lies a protective "cap" called a telomere – its function was discovered by Nobel Prize laureates Elizabeth Blackburn and Jack Szostak.

Blackburn used early DNA-sequencing techniques to show that telomeres were made up of short, repeated pieces of DNA. She and Szostak performed an experiment showing that telomeres from one species, a pond-dwelling single-celled organism called tetrahymena, could protect DNA molecules, or mini-chromosomes, from a very distant organism, yeast (see figure).

As telomere DNA from one organism, tetrahymena, protected chromosomes in an entirely different one, yeast, this demonstrated the existence of a previously unrecognised fundamental mechanism. Later on, it became evident that telomere DNA with its characteristic sequence is present in most plants and animals, from amoeba to humans.

Elizabeth Blackburn and Jack Szostak were the first to show that the unique DNA sequence contained in the telomeres serves to protect the chromosomes. They were awarded the Nobel Prize in Physiology or Medicine in 2009 alongside Carol Greider.

Read more: https://bit.ly/2HBe6Yh

06/11/2025

🌿 ¡Conoce la Política Ambiental de la USAC! 🌿

Estudiantes del 10º ciclo de la carrera de Química Farmacéutica elaboraron esta infografía con el objetivo de dar a conocer la Política Ambiental de la Universidad de San Carlos de Guatemala, aprobada por el Consejo Superior Universitario el 30 de julio de 2014.

04/11/2025

Put your smarts to the test! Every Tuesday, we’ll drop a new trivia question to challenge your knowledge and spark some curiosity.

Leave your guesses in the comments and check back tomorrow to see if you guessed correctly!

This week's question:

04/11/2025

Investigadoras del Instituto de Agroquímica y Tecnología de Alimentos del CSIC demuestra en ensayos ‘in vitro’ que esta bebida elaborada a partir de leche fermentada regula distintas vías de señalización inmune a nivel intestinal.

04/11/2025

Each month, SOT provides an update on activities and events of importance to the toxicology community through the release of the “Around the World of Toxicology” blog. View the November 2025 release: https://toxchange.toxicology.org/blogs/matthew-campen/2025/10/30/around-the-world-of-toxicology-november-2025-partn?utm_source=SOT%20Website&utm_medium=Referrels&utm_campaign=ToXchange&_zs=kEppm&_zl=6blW3