Pol Jimenez-Arenas

Pol Jimenez-Arenas

@pjimenez9.bsky.social

Researcher at ISGlobal & lecturer at Blanquerna-URL, MPH, biologist... | Gut microbiota-brain axis, environmental and molecular epidemiology | Opinions are my own https://orcid.org/0009-0005-8874-9642

116 followers247 following23 posts

Pol Jimenez-Arenas reposted

Mónica García
@monicagarciag.bsky.social

Ya tenemos la sede que albergará la Agencia Estatal de Salud Pública!! Ocho candidaturas magníficas y unos criterios objetivos y concurrentes para designar a Zaragoza como la futura sede.

Pol Jimenez-Arenas
@pjimenez9.bsky.social

Excited to be co-hosting this seminar today at @prbb.org @isglobal.org. We’ll discuss with Christina Nicolaidis, Josep Antoni Ramos-Quiroga, Laura Sanmiquel Molinero, and Salvador Macip. 📅 Today, May 18 | 15:00 CET 📍 Charles Darwin Room @ PRBB (Barcelona) www.isglobal.org/ca/-/dialogu...

isglobal.orgDialogues Between Neurodiversity and Medical Frameworks - ISGLOBALInterdisciplinary seminar on neurodiversity and biomedical frameworks, exploring mental health, inclusive research practices and communication in neuroscience
Pol Jimenez-Arenas
@pjimenez9.bsky.social

🧠 How can researchers and clinicians balance scientific rigour, clinical insight and inclusive approaches on neurodevelopment? Join us: 📅 May 18, 15–17 CET 📍 @prbb.org (Barcelona) #Psychiatry #Neuroscience #PublicHealth #DisabilityResearch

Pol Jimenez-Arenas
@pjimenez9.bsky.social

👉Confounding remains a key issue, often unmeasured or poorly controlled. 👉Methodological heterogeneity is high (different microbiome profiling methods, outcome definitions, and statistical approaches), which limits comparability and prevents meta-analysis.

Pol Jimenez-Arenas
@pjimenez9.bsky.social

Where do we go next? We need: 1. Longitudinal, well-powered cohorts 2. Proper control of confounding 3. Standardized microbiome profiling protocols (STORMS) and outcome assessment 4. Multi-omics integration 🔑Only then can we move toward causal inference and clinical translation.

Pol Jimenez-Arenas
@pjimenez9.bsky.social

In neurodevelopmental disorders: - ASD: some taxa shifts reported, but findings are inconsistent. - ADHD: highly variable results. Functional/metabolomic data hint at immune & neuroactive roles. In the general pediatric population, associations remain modest & inconsistent.

Pol Jimenez-Arenas
@pjimenez9.bsky.social

🚨 Major limitation: lack of causal designs. Only ~42% of studies were longitudinal. ⚠️Most were cross-sectional, so no temporal ordering. Are microbiota changes causes, consequences, or correlates? Still unclear.

Pol Jimenez-Arenas
@pjimenez9.bsky.social

🧠 Key influences on development were captured: age, siblings, maternal education & reasoning, and breastfeeding duration. The DP-3 can detect both broad developmental trajectories and subtle subgroup differences. Fast and scalable, the DP-3 is ideal for screening large populations.

Pol Jimenez-Arenas
@pjimenez9.bsky.social

✅ The Spanish DP-3 showed good internal consistency (Cronbach’s α > 0.7), acceptable structural validity (CFI = .924, TLI = .848), and high sensitivity to developmental change across repeated assessments. It also correlates with the gold-standard BSID-III.

Pol Jimenez-Arenas reposted

Sean Gibbons 🦠💩
@gibbological.bsky.social

If you missed the 2025 @isbscience.org Virtual Microbiome Symposium (theme: how microbial metabolites influence the brain, the immune system, & metabolism), the videos of the talks and the panel discussion are now available here: youtube.com/playlist?lis... Thanks to all who helped make it happen!

youtube.com2025 ISB Microbiome Symposium - YouTubeThe 2025 ISB Microbiome Symposium was a virtual scientific event hosted by the Institute for Systems Biology (ISB) on December 12, 2025. The symposium brough...

Pol Jimenez-Arenas reposted

EMBL Events
@events.embl.org

Our scientific organisers opened ‘The human microbiome’ symposium by giving us a brief update on their most recent work 🦠 #EESMicrobiome 🔹Mani Arumugam, University of Copenhagen 🔹Ami Bhatt, Stanford University School of Medicine 🔹Peer Bork, EMBL Heidelberg 🔹Nicola Segata, University of Trento

Pol Jimenez-Arenas reposted

IrsiCaixa
@irsicaixa.es

🧬 ¿Se puede envejecer con más salud y calidad de vida? 🗞️ @elpais.com destaca el proyecto que llevamos a cabo en #IrsiCaixa junto al @crg.eu y @researchmar.bsky.social, semifinalista del reto internacional @xprize.org. 🔗👇 elpais.com/salud-y-bien...

elpais.comUn proyecto español, en el concurso del millón de euros para alargar la calidad de vida: “No hay medicamentos mágicos”Un programa sobre envejecimiento del Instituto de Investigación del Hospital del Mar pugna en una competición internacional para averiguar cómo aumentar años de vida con salud

Pol Jimenez-Arenas reposted

Jack A Gilbert
@gilbertjacka.bsky.social

Me and a few of my mates got together and wrote a review on the current state of clinical translation of microbiome research. A great summary of the state of the art for microbiome research. www.nature.com/articles/s41...

nature.comClinical translation of microbiome research - Nature MedicineThis Review summarizes recent and compelling examples of microbiome-based interventions that are ripe for clinical adoption while also discussing the challenges and opportunities facing the field.

Pol Jimenez-Arenas reposted

C40 Cities
@c40cities.bsky.social

🇫🇷🌳Paris is making way for people, bikes and greenery. The capital has voted to expand green areas, with 500 new pedestrian streets that will help reduce pollution. Congratulations @annehidalgo.bsky.social for continuing to drive forward a greener, safer future. www.bloomberg.com/news/article...

bloomberg.comParis Votes to Make 500 More Streets Car-FreeWith the passage of a referendum Sunday, Mayor Anne Hidalgo will amplify her ambitious moves to challenge car dominance and expand pedestrian access.

Pol Jimenez-Arenas reposted

Peter Tennant
@pwgtennant.bsky.social

"The golden days of just throwing three variables into the statistical software of your choice to tell an elaborate story are coming to an end" #EpiSky #CausalSky

Julia M. Rohrer@dingdingpeng.the100.ci

New blog post! In which I explain the issue with mediation analysis and sketch out one way to deal with the underlying causal inference problem -- in just a bit over 1,000 words! If you have never found the time to read up on this, now is your chance. www.the100.ci/2025/03/20/r...

the100.ciReviewer notes: That’s a very nice mediation analysis you have there. It would be a shame if something happened to it.Mediation analysis has gotten a lot of flak, including classic titles such as “Yes, but what’s the mechanism? (Don’t expect an easy answer)” (Bullock et al., 2010), “What mediation analysis can (not) ...
Pol Jimenez-Arenas
@pjimenez9.bsky.social

Spanish right-wing parties against the establishment of a National Public Health Agency - very disappointing, not at all surprising

elDiario.es@eldiario.es

‼️Un cambio de voto de última hora de PP y Junts deja caer la Agencia Estatal de Salud Pública

eldiario.esUn cambio de voto de última hora de PP y Junts deja caer la Agencia Estatal de Salud PúblicaEl Ministerio de Sanidad acudía al Congreso con todos los apoyos atados, pero un conflicto con las enmiendas de otra norma ha bajado de su postura a los conservadores durante el Pleno

Pol Jimenez-Arenas reposted

Peter Tennant
@pwgtennant.bsky.social

TODAY AT 3PM GMT (11AM EDT)! #EpiSky #CausalSky #CIIG

Peter Tennant@pwgtennant.bsky.social

"Selection bias: where are we now?" Incredibly excited to announce the next Causal Inference Interest Group seminar with @haidonglu.bsky.social will take place on 10th March 2025 at 3pm GMT (11am EDT). Don't miss this one! Register at: turing-uk.zoom.us/meeting/regi... #EpiSky #CausalSky #CIIG

Pol Jimenez-Arenas reposted

Parc de Recerca Biomèdica de Barcelona
@prbb.org

Un estudi de Mariona Bustamante i Marta Cosin-Tomàs d'@isglobal.org confirma que ser fumador passiu 🚬 durant la infància pot portar grans problemes en l’edat adulta, ja que l'ADN 🧬 de nens i nenes exposats al tabac tendeix a patir canvis epigenètics. Més info 👇

tuit.catEl tabaquisme passiu en la infància marca l’ADN - El·lipseISGlobal ha visto que el tabaquisme passiu en la infància causa alteracions en l’ADN que podrien promoure l’aparició de malalties en adults

Pol Jimenez-Arenas reposted

Franciska de Vries 🟥
@frantecol.bsky.social

Science takes time - a lot of time. Time that is more and more difficult to make available because of increased workloads. Time that exceeds the temporary contracts of postdocs and PhDs. I'll illustrate this using our paper published in Nature yesterday. 🧵 (1/x) www.nature.com/articles/s41...

nature.comSoil microbiomes show consistent and predictable responses to extreme events - NatureSoils from 30 grasslands across Europe were subjected to 4 contrasting extreme climatic events under drought, flood, freezing and heat conditions, with the results suggesting that soil microbiomes fro...
Pol Jimenez-Arenas
@pjimenez9.bsky.social

interesting reading on how climate disasters particularly hit vulnerable groups: less able to adapt to future events and the most affected in climate adaptation projects-related displacements www.eldiario.es/catalunya/is...

eldiario.esIsabelle Anguelovski: "Hay grandes empresas que hacen negocio tras los desastres climáticos. Se está viendo en Valencia"La investigadora en desigualdades ambientales alerta de que la reconstrucción tras catástrofes como el Katrina o el tsunami del Índico beneficiaron a unos pocos y castigaron a los colectivos más desfa...

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