Omar Ammar
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omarammar.bsky.social
Omar Ammar
@omarammar.bsky.social
C. Embryologist | TEDx speaker | #ESHREjc editor & @theESHRE5 | Alum @CheveningFCDO, @Dundeeuni, @UniofOxford | Views own
Reposted by Omar Ammar
🔥 Thank you everyone for attending the #ESHREjc and the first one hosted on Bluesky

Many thanks to our experts for the insightful discussion on the multifaceted role of the oocyte cortex @rvassena.bsky.social @paolavigano.bsky.social

And the # ESHREjc team 💫

Until next time! 👋🏻
Many thanks to all participants, experts, authors and to @gliperis.bsky.social and his team for leading this great first Bluesky edition of the #ESHREjc 🦋
See you next time! 🙌
January 31, 2026 at 4:05 PM
Reposted by Omar Ammar
What have we been discussing during the #ESHREjc discussion on the oocyte cortex? Have a look at the summaries starting with q1 on its role in maturation 👇🏻
Here’s the summary for Q1 on structural components of the oocyte cortex and GV to MII remodeling #ESHREJC @eshre.bsky.social
January 31, 2026 at 3:04 PM
Reposted by Omar Ammar
Almost over for this session of the #ESHREjc

Summary for #Q2 👇🏼
@eshre.bsky.social
January 31, 2026 at 2:09 PM
Here’s the summary for Q1 on structural components of the oocyte cortex and GV to MII remodeling #ESHREJC @eshre.bsky.social
January 31, 2026 at 2:02 PM
Reposted by Omar Ammar
Q3. Coticchio et al suggest cortical properties (stiffness, viscoelasticity) could be biomarkers of oocyte developmental competence. Which technologies 🧫🔬🤖could realistically be applied in an IVF lab 👩🏻‍🔬 to measure cortex mechanics and what are the major barriers to clinical 🧑🏻‍⚕️ translation? #ESHREjc
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January 30, 2026 at 4:49 PM
Reposted by Omar Ammar
Q4:Given that the cortex is a part of the interface between the oocyte and cumulus cells, how might abnormalities in the follicular environment alter cortical signaling or architecture, and how could these changes be detected through non-invasive follicular fluid or cumulus cell biomarkers?
#ESHREjc
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January 30, 2026 at 5:03 PM
Reposted by Omar Ammar
Q2: The paper proposed that cortical dysregulation can lead to blastomeri fragmentation and reduced blastocyst quality. What are the proposed mechanisms by which ectopic chromosomal signaling or cortical instability leads to abnormal cleavage patterns in early embryos? #ESHREjc
January 30, 2026 at 4:25 PM
Reposted by Omar Ammar
The discussion is open for the next 24h until 17:00 CET tomorrow Saturday

Join the discussion 💫
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January 30, 2026 at 4:11 PM
Reposted by Omar Ammar
Housekeeping rules

Always use the #ESHREjc for all relevant discussion points
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January 30, 2026 at 4:10 PM
Q1. How do the structural components of the oocyte cortex (e.g., actin, myosin-!, pERM, Arp2/3, Fyn kinases) dynamically remodel during the transitions from GV to MIl and how do these changes mechanistically support spindle positioning and polar body extrusion? #ESHREjc
a picture of a woman with the words i 'm just an egg
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January 30, 2026 at 4:11 PM
Reposted by Omar Ammar
Housekeeping essentials 👇
1. Use the hashtag #ESHREjc in all your posts
2. The #ESHREjc will take place over the weekend starting now until tomorrow 31 January 17.00 CET 🕔
3. Please always comment in the thread of the questions (they will be identified with Q1, Q2, …)
January 30, 2026 at 4:02 PM
Reposted by Omar Ammar
For those who have not had the chance to read the paper our moderators have created a great Skytorial 👉 bsky.app/profile/glip...
#ESHREjc
January 30, 2026 at 4:02 PM
Reposted by Omar Ammar
Welcome everyone, we are back for the 51st edition of the #ESHREjc and the very first one on Bluesky! 🙌 🦋
January 30, 2026 at 4:01 PM
Reposted by Omar Ammar
This edition’s paper is “The emerging role of the oocyte cortical domain in maturation, fertilization, and development” published in our academic journal Human Reproduction 👩‍🎓
🔗 doi.org/10.1093/humr...

#ESHREjc
The emerging role of the oocyte cortical domain in maturation, fertilization, and development
Abstract. The cell cortex, a cytoskeletal network with regulatory signalling pathways, is localized beneath the cell membrane: it is especially prominent i
doi.org
January 30, 2026 at 4:02 PM
Reposted by Omar Ammar
🧬 The Oocyte Cortex: Fertility’s Hidden Control Layer

To find out join #ESHREjc on Friday 29/1 starting 17:00 CET.
@paolavigano.bsky.social @rvassena.bsky.social @enricabianchi.bsky.social&authors Giovanni Cotichio and Danilo Cimadomo

Paper ➡️ pubmed.ncbi.nlm.nih.gov/41206604/

🧵 #bluetorial 👇🏻
The emerging role of the oocyte cortical domain in maturation, fertilization, and development - PubMed
The cell cortex, a cytoskeletal network with regulatory signalling pathways, is localized beneath the cell membrane: it is especially prominent in mammalian oocytes. As in other cells, the cortex ensures appropriate shape and robustness of oocytes. It is also involved in other key and more specific …
pubmed.ncbi.nlm.nih.gov
January 23, 2026 at 5:38 AM
Reposted by Omar Ammar
🚨 The #ESHRE journal club is now on Bluesky!

Is the oocyte cortex the hidden key to egg quality, fertilisation, and embryo development?

Join us for the next #ESHREjc
🗓 30–31 January
⏰ 17:00 CET start-stop

academic.oup.com/humrep/artic...

Experts 👉🏻 RitaVassena @paolavigano.bsky.social
January 5, 2026 at 10:40 AM
Welcome @eshre.bsky.social

Let’s revive the good old days of science communication here!!
Hello Bluesky Community 👋
Fresh platform - same mission! We’re officially on Bluesky and looking forward to connecting with the community here! ✨ Let’s keep pushing the boundaries of reproductive science together.
Follow us @eshre.bsky.social and be part of what’s next. 💙
#ESHRE #ReproductiveHealth
December 1, 2025 at 11:03 AM
Dear connections, any expert I have here that has good understanding of the current drought situation of Tigris river in Iraq? Science and geopolitics wise. I wanna do a short interview for my instagram.
November 7, 2025 at 1:20 PM
Whatever you’re offering as an in intervention whether big or small in the MAR world if it doesn’t tick one of these then it’s unnecessary especially if it comes with a fee to pay.

Ticking these requires evidence not a claim.
June 7, 2025 at 1:21 PM
Hi everyone, anyone aware of universities accepting researchers to do PhDs by publications (retrospective)? @academic-chatter.bsky.social
May 1, 2025 at 9:01 PM
Our new #ESHREjc piece on genomics in POI diagnosis:

•VUS & their clinical challenges
•AI tools for pathogenicity prediction
•Missing genotype–phenotype links
•Equity in genetic testing access
•Personalized genetic counseling

doi.org/10.1093/humr...
April 29, 2025 at 7:48 PM
1-Instead of pushing for equity in science and access to space, this trip risks turning a powerful symbol into a hollow performance. It follows a familiar script: elite women are put on display as signs of “progress” while the women most impacted by systemic barriers remain shut out.
April 15, 2025 at 7:37 AM