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Posts by Ioanna Chatzigiannidou

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Unbinned contigs expand known diversity in the global microbiome - Nature Microbiology Re-analysis of over 92,000 metagenomes reveals hundreds of thousands of previously undescribed Bacterial and Archaeal clades hidden in plain sight.

There is a lot of undescribed prokaryotic diversity in existing whole-genome metagenomic data!
www.nature.com/articles/s41...

2 weeks ago 21 12 1 1

@amiposts.bsky.social journals have a Bluesky account! Follow for updates! 📃
#MicroSky

2 months ago 1 1 0 0
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Are you an #EarlyCareerScientist ready to showcase your work?

#LAMECS2026 is a fantastic opportunity to present your first talk or poster, build confidence and network.

Submit your abstract by 22 March 2026: appliedmicrobiology.org/ems-event-calendar/lamec...

2 months ago 4 4 1 1
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👩‍🔬On this #InternationalDayOfWomenAndGirlsInScience, we celebrate the women who opened doors and recommit to work together to ensure every girl in STEM can rise without barriers! #WomenInSTEM #WomenInScience

2 months ago 3 2 0 0
Audience attentively listening to speaker at the Women Microbiologist Network from Annual Conference 2025.

Audience attentively listening to speaker at the Women Microbiologist Network from Annual Conference 2025.

On International Day of Women and Girls in Science 🔬👩‍🔬
We’re launching the Women Microbiologists Network: a member-led networking and discussions event for women in microbiology by Dr. Enas Newire.
Read the news story and join:
🔗 https://microb.io/4ax5M5I

2 months ago 16 12 1 3
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In #Microbiome

🔍Profiling the microbial plasmidome and resistome on 78 samples across European urban water systems

🦠Bacteroides emerged as a major driver of antimicrobial resistance dynamics across different wastewater treatment processes

➡️ doi.org/qn2v #OpenAccess

2 months ago 5 2 1 0
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Early-life colonization by aromatic-lactate-producing bifidobacteria lowers the risk of allergic sensitization - Nature Microbiology Vaginal birth, exclusive breastfeeding and early contact with siblings promote colonization of the infant gut with bifidobacteria capable of producing aromatic lactates, a microbial and metabolite sig...

Gut microbiota has previously been linked to immune developement and allergies. But what is the mechanism behind? Find more about the role of Bifidobacteria 🦠, aromatic lactates and immune resilience in babies 👶 in the recent paper from our group @natmicrobiol.nature.com
shorturl.at/peaI1 #microsky

3 months ago 11 3 2 0

Very sad news 😔

3 months ago 1 0 0 0
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We’re excited to launch our 2026 grants portfolio, designed to support microbiologists at every stage of their journey.

🔎 Explore all our 2026 grants:
appliedmicrobiology.org/funding.html

3 months ago 4 3 2 0
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Ready to go! Exciting day for the postdocs at DTU Bioengineering as our first Postdoc Day is starting 🧑‍🔬 #postdoc #academiccareer

4 months ago 0 0 0 0
A graphic with the title “Test your antibiotic knowledge!” followed by a pill and question-mark icon. Below, a speech bubble labelled “False” with a red X reads: “Antibiotics are safe to use without a prescription.” Another speech bubble labelled “True” with a green checkmark reads: “Only use antibiotics if prescribed. Taking antibiotics when you don’t need them can lead to resistance and side effects.”

A graphic with the title “Test your antibiotic knowledge!” followed by a pill and question-mark icon. Below, a speech bubble labelled “False” with a red X reads: “Antibiotics are safe to use without a prescription.” Another speech bubble labelled “True” with a green checkmark reads: “Only use antibiotics if prescribed. Taking antibiotics when you don’t need them can lead to resistance and side effects.”

It’s World #AMR Awareness Week.

Did you know misusing antibiotics leads to drug resistance and side effects?

Learn about #AntimicrobialResistance (AMR) 👉bit.ly/AMRweek2025

5 months ago 158 52 2 4
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AMR is more complicated than a lack of drugs Later this month (Nov 18–24) is World AMR Awareness Week (WAAW), the annual reminder of this long smouldering crisis in modern health care. This is the first year with the new name as it was formerly ...

"Too often #AMR is framed as an immense although conceptually simple challenge: delay resistance to current drugs and produce new drugs. But we need to go beyond this, we need to pull every lever at our disposal to minimise infection even before we turn to drugs."

www.thelancet.com/journals/lan...

6 months ago 27 17 1 2
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🥛El #kéfir modula receptores intestinales implicados en la respuesta del sistema inmunitario

🔬Investigadoras del @iatacsic.bsky.social demuestran en ensayos ‘in vitro’ que esta bebida regula distintas vías de señalización inmune a nivel intestinal

👉 https://f.mtr.cool/amstnygbml

5 months ago 15 4 0 0
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Nanobody-based recombinant antivenom for cobra, mamba and rinkhals bites - Nature A recombinant antivenom composed of eight nanobodies provides broad protection against venom-induced lethality and dermonecrosis in mice challenged with venoms from cobras, mambas and rinkha...

An antivenom combining eight alpaca- and llama-derived nanobodies neutralizes toxins from a broad range of snake venoms #NBThighlight www.nature.com/articles/s41...

5 months ago 23 4 1 0
A Roadmap for equitable use of public microbiome data published in Nature Microbiology by The Data Reuse Core team @alexjprobst.bsky.social @lhug.bsky.social @environmicrobio.bsky.social Cristina Moraru @geomicrosoares.bsky.social @folker.bsky.social Anke Heyder 

and a QR code that takes you to the webpage of the manuscript

A Roadmap for equitable use of public microbiome data published in Nature Microbiology by The Data Reuse Core team @alexjprobst.bsky.social @lhug.bsky.social @environmicrobio.bsky.social Cristina Moraru @geomicrosoares.bsky.social @folker.bsky.social Anke Heyder and a QR code that takes you to the webpage of the manuscript

🧪🦠🖥️🧬🧫🔬 The Roadmap for equitable use of public microbiome data -including the Data Reuse Information Tag (DRI)- by the #DataReuseConsortium.
Must read if you use or produce microbiome data!

Kudos to the Data Reuse Core Team for their hard work!

doi.org/10.1038/s415...

6 months ago 19 9 1 1
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The #EESMicrobiome in Heildeberg has been a blast! Inspiring talks and top discussions with peers 🤩 and I got to present some of our latest research at the Disease Systems Immunology group regarding 🌱fiber and 🦠 gut microbes!
@events.embl.org

6 months ago 3 1 1 0
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🦠🌍 Welcome to Day 2 of #EESMicrobiome
We’re kicking things off with Session 2: Functional insights into microbial communities 🧬

🔹 First talk:
“Small proteins of the human microbiome and beyond”
by Luis Pedro Coelho – Queensland University of Technology

Stay tuned for more exciting science!

7 months ago 13 2 2 0

Thank you very much! Highly appreciate the positive comments from someone with your knowledge in the specific field 😁

7 months ago 1 0 0 0
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Temporal dynamics and microbial interactions shaping the gut resistome in early infancy Nature Communications - Here the authors show that antibiotic resistance genes peak in the gut at the age of 6 months, and that beneficial bifidobacteria produce aromatic lactic acids that actively...

Nice paper on the temporal dynamics of early infancy. Once again, it was shown that Escherichia & Klebsiella correlate with higher ARG load, and their abundance is in turn negatively associated with Bifidos. Kudos to the authors for the excellent paper!
rdcu.be/eDRPa

7 months ago 2 1 1 0
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Temporal dynamics and microbial interactions shaping the gut resistome in early infancy - Nature Communications Here the authors show that antibiotic resistance genes peak in the gut at the age of 6 months, and that beneficial bifidobacteria produce aromatic lactic acids that actively inhibit antimicrobial…

Temporal dynamics and #microbial interactions shaping the #gut #resistome in early infancy ...

| #antimicrobialresistance | #AMR | #antibiotic | #genes | #Ecoli | Via @nature.com

7 months ago 3 1 0 0

This sounds like a very cool project and, at the same time, very relevant research! Best of luck!

7 months ago 1 0 0 0
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Temporal dynamics and microbial interactions shaping the gut resistome in early infancy - Nature Communications Here the authors show that antibiotic resistance genes peak in the gut at the age of 6 months, and that beneficial bifidobacteria produce aromatic lactic acids that actively inhibit antimicrobial resi...

🍼 Antibiotic resistance starts early

A study of infant gut bacteria found antibiotic resistance genes appear within the first week of life, peaking at 6 months.

🔗 www.nature.com/articles/s41...

#SciComm #Microbiome 🧪

7 months ago 37 9 1 0

However, E. coli and other ARG-rich species can be controlled through 🧪 aromatic lactic acids = metabolites produced by early life associated bifidobacteria! The same bifidobacteria species that have been previously linked to health and are boosted by breastfeeding 🤱

7 months ago 0 0 0 0

We followed infants from birth till 5 years of life, and found that 🧬 antimicrobial resistance genes are most abundant at 6 months. The early life resistome was linked to the deliver mode and was largely driven by E. coli 🦠

7 months ago 0 0 1 0
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Temporal dynamics and microbial interactions shaping the gut resistome in early infancy - Nature Communications Here the authors show that antibiotic resistance genes peak in the gut at the age of 6 months, and that beneficial bifidobacteria produce aromatic lactic acids that actively inhibit antimicrobial resi...

👶 Curious about infant gut microbiota and 🧬 antimicrobial resistance? Have a look at our recent publication @natcomms.nature.com
#microbiome #infantgut #AMR
www.nature.com/articles/s41...

7 months ago 15 5 1 0

Thrilled to share our #Comment in @natmicrobiol.nature.com
A collaborative effort by a fantastic group of researchers across disciplines!

💬We explored how interdisciplinary microbiology can thrive when early-career researchers are included and supported.

📄 doi.org/10.1038/s415...

7 months ago 5 4 1 0
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Unveiling soil microbial diversity through ultra‐deep short‐read metagenomic sequencing and co‐assembly By combining ultra-deep short-read shotgun metagenomic sequencing with 5-sample co-assembly across 600 agricultural soil samples, we significantly enhanced the representation and recovery of microbia....

Soil is the most diverse microbial ecosystem, which makes microbiome studies with shotgun sequencing extremely tricky!
In our last paper @imetascience.bsky.social, we show that co-assembly increases gene and genome recovery
tinyurl.com/59t4z8fh
#soilmicrobiome #metagenomics

7 months ago 4 2 0 0
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@theipcinfo.bsky.social warns: the worst-case scenario of #famine is unfolding in #Gaza.

Mass starvation, malnutrition, and disease are driving a rise in hunger-related deaths.

@who.int calls for urgent access for food and medical aid into Gaza at scale.

Ceasefire.
Peace is the best medicine!

8 months ago 81 64 3 2

Diving into the HMO and fiber degradation potential of the infant gut microbiome during weaning 👶 great work led by Yunjeong So at Maher Abou Hachem’s lab and I am happy to be part of it! #microbiome

8 months ago 2 0 0 0
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Droplet microfluidics for single-cell studies: a frontier in ecological understanding of microbiomes Abstract. Recent advances in single-cell technologies have profoundly impacted our understanding of microbial communities—shedding light on cell-to-cell va

New Review Out!
We explore how droplet microfluidics is opening new doors in microbial ecology - enabling single-cell functional insights into growth, metabolism & interactions.
🔗 doi.org/10.1093/fems...
#MicrobialEcology #DropletMicrofluidics #Microbiology

8 months ago 18 10 0 0