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Dr Petra de Graaf

@petradegraaf.bsky.social
92 followers 124 following 39 posts

Regenerative Medicine in Urology | Group leader | Assistant Professor | UMC Utrecht | 🍆👩‍🔬 | #phallusthursday

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Reposted by Dr Petra de Graaf
STRONG-UR @strong-ur.bsky.social · 23/06/2026
📩 Our latest newsletter is out! Catch up on the latest STRONG-UR news, upcoming events, and recent activities in regenerative medicine and 3D bioprinting. 👀 Discover: ➡️ Project updates ➡️ Upcoming events ➡️ And more! 🔗 www.linkedin.com/feed/update/...
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Reposted by Dr Petra de Graaf
STRONG-UR @strong-ur.bsky.social · 18/06/2026
We are advancing regenerative medicine by moving 3D bioprinting for urethral strictures from lab to clinic—studying tissue biology, validating biogels/bioprinting, and addressing regulatory requirements. 🩺💡 #RegenerativeMedicine #Bioprinting
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Dr Petra de Graaf @petradegraaf.bsky.social · 20/05/2026
Yesterday I was presenting at @pintofsciencenl.bsky.social explaining urethral strictures and the approach of @strong-ur.bsky.social Thank you for inviting me @isabellemartinier.bsky.social
Petra with slide with urethral stricture and cross section of urethra

In a pub so lights and projection are bad
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Reposted by Dr Petra de Graaf
Mark Chadbourn @chadbourn.bsky.social · 15/05/2026
The Trump era is the world’s most bizarre headline generator. Remember when things were normal?
apple.news
Hantavirus Response Official Is a Right-Wing Penile Implant Expert — Rolling Stone
Urologist Dr. Brian Christine is delivering news on the hantavirus cruise, but his medical expertise is pretty below the belt
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Dr Petra de Graaf @petradegraaf.bsky.social · 14/05/2026
Next Tuesday I’ll be speaking at Pint of Science Utrecht pintofscience.nl/event/grow-y...
pintofscience.nl
Grow your body back? From axolotls to human tissues
Join us for an evening full with regenerative medicine - the first drink is included in the price!
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Dr Petra de Graaf @petradegraaf.bsky.social · 13/05/2026
Here we go! #education #bachelor #medschool
Slide saying Regenetive medicine and Urology and course code

Beautiful picture of endothelial cells in green, reaching out to each other
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Reposted by Dr Petra de Graaf
Oz Wiltshire. @ozwiltshire.bsky.social · 10/05/2026
Happy Mother's Day to all the wonderful mothers out there, you look fahhhhbulous darhhling.
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Dr Petra de Graaf @petradegraaf.bsky.social · 09/05/2026
Happy Europe day to those celebrating 🥳 We will be in the library in Utrecht to pitch @strong-ur.bsky.social and other bioprinting projects with Utrecht members 🇪🇺
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Dr Petra de Graaf @petradegraaf.bsky.social · 23/04/2026
Great talk by @isabellemartinier.bsky.social at TERMIS26
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Reposted by Dr Petra de Graaf
STRONG-UR @strong-ur.bsky.social · 06/01/2026
Although urethral stricture mainly affects men, our impact goes further. The project advances male urethral reconstruction while enabling future female and tubular organ applications, aligned with Horizon Europe’s gender equality and inclusive research goals. 🔗 www.strong-ur.eu/about-us/the...
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Dr Petra de Graaf @petradegraaf.bsky.social · 23/12/2025
4/4 abstracts accepted, @eutermis.bsky.social here we come!
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The Partial Historians 🏺 @partialhistorians.bsky.social · 13/11/2025
✨Bring on the good fortune✨ This #PhallusThursday we celebrate with this tuff stele from Pompeii that depicts a large phallus inside a temple. If you ever wondered if the Romans attributed divine power to the phallus, wonder no more! #AncientRome
This artefact is now held in the MAN Napoli. Photo credit: James Heath via Flickr. The stele is shaped as a temple with supporting columns. Between the columns inside the temple is a phallus which is almost as tall as the columns themselves.
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Dr Petra de Graaf @petradegraaf.bsky.social · 13/11/2025
Want to know more about urethral diseases and how biofabrication may generate solutions for patients? Check out post below!
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Dr Petra de Graaf @petradegraaf.bsky.social · 09/11/2025
Fresh paper! www.jpedsurg.org/article/S002...
jpedsurg.org
Androgen Receptor Localization in Human Oral Mucosa: Implications for Hypospadias Surgery
Hypospadias is a congenital defect of the urethra that often requires surgical correction. Oral mucosa (OM) is commonly used as a graft material in adult and pediatric urethroplasties (revised as sugg...
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Dr Petra de Graaf @petradegraaf.bsky.social · 30/10/2025
It was a true pleasure to host this meeting.
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Reposted by Dr Petra de Graaf
Science Magazine @science.org · 27/10/2025
Talk about an in-flight meal. For the first time, researchers have captured rats hunting bats by grabbing them from the sky. Learn more: scim.ag/3Jqldmn
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Reposted by Dr Petra de Graaf
RedPen/BlackPen @redpenblackpen.bsky.social · 26/10/2025
Sigh. We're gonna need a bigger story...
Two panel comic:
Left: a mostly completed puzzle with a regular-looking piece missing labeled "My Story So Far"
Right: a blobby and irregular shape, with an arrow pointing at the missing piece (it obviously does not fit) labeled "My Latest Experiment"
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Dr Petra de Graaf @petradegraaf.bsky.social · 27/10/2025
Proud to host the @strong-ur.bsky.social consortium in our institute, stay tuned for more cool pictures
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Cell Stem Cell @cp-cellstemcell.bsky.social · 05/09/2025
Targeting ECM-producing cells with CAR-T therapy alleviates fibrosis in chronic kidney disease
dlvr.it
Targeting ECM-producing cells with CAR-T therapy alleviates fibrosis in chronic kidney disease
Zhao et al. identify PDGFRβ as a common surface antigen for the major ECM-producing cells including fibroblasts, pericytes, and myofibroblasts in the kidney. They further demonstrate that PDGFRβ CAR-T cells significantly alleviate fibrosis-associated pathologies in multiple CKD models, evoking an integrated therapeutic strategy for CKD and its cardiovascular complications.
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Dr Petra de Graaf @petradegraaf.bsky.social · 06/09/2025
Great paper from our institute, congrats @riclevato.bsky.social and team #biofabrication #3Dprinting #regenerativemedicine
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STRONG-UR @strong-ur.bsky.social · 19/08/2025
🔎 Urethral strictures can vary significantly in severity, and understanding this, is key to improving diagnosis and treatment. Read all about it in the @uroweb.org ’s Urethral Strictures Guidelines classifying strictures 👉 uroweb.org/guidelines/u... #Urology #MedicalResearch #EUscience
uroweb.org
EAU Guidelines on Urethral Strictures - Uroweb
The EAU Urethral Strictures Guidelines aim to provide an overview of the aspects relating to urethral strictures.
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Dr Petra de Graaf @petradegraaf.bsky.social · 05/08/2025
Fresh paper! Thanks to @erneurogen.bsky.social for funding the meeting and ofcourse all the co-authors. www.liebertpub.com/doi/abs/10.1...
liebertpub.com
Lessons Learned from Tissue Engineering in Urethral Reconstruction and Pelvic Organ Prolapse | Tissue Engineering Part B: Reviews
Urogenital diseases, such as hypospadias, incontinence, urethral obstruction, and pelvic organ prolapse, are common conditions that often require treatments at specialized health care providers. All t...
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Dr Petra de Graaf @petradegraaf.bsky.social · 06/07/2025
www.linkedin.com/posts/drpetr...
linkedin.com
Last week we celebrated 10 years Regenerative Medicine Utrecht, so proud to be part of this community! | Petra De Graaf
Last week we celebrated 10 years Regenerative Medicine Utrecht, so proud to be part of this community! I enthusiastically joined in organization of the symposium, inviting old and new friends for le...
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Dr Petra de Graaf @petradegraaf.bsky.social · 17/06/2025
Fresh publication, check out our news and views article in Nature Biomedical Engineering First manuscript (of many I hope) with @isabellemartinier.bsky.social #biofabrication #diseasemodeling #peniledisease #urology rdcu.be/erlM6
rdcu.be
Biomimetic model to study penile dysfunctions
Nature Biomedical Engineering - A multi-layered penis model can be 3D printed with a complex vessel architecture for the study of penile physiology and for restoring erectile functions in vivo.
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American Sexual Health Association @ashasexualhealth.bsky.social · 14/06/2025
Happy Cucumber Day 🥒🎉 Cucumbers (and other things 😉) come in all shapes and sizes. Big ones, small ones, straight ones, curved ones. Because just like cucumbers, condoms also come in all shapes and sizes. #safesexysummer #cucumber #condoms #cukes #pickles #STIprevention
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Chemical Society Reviews @chemsocrev.rsc.org · 03/03/2025
This review is from @isabellemartinier.bsky.social, @fm-fernandes.bsky.social and Léa Trichet: 'Biomimetic tubular materials: from native tissues to a unifying view of new vascular, tracheal, gastrointestinal, oesophageal, and urinary grafts' pubs.rsc.org/en/content/a...
pubs.rsc.org
Biomimetic tubular materials: from native tissues to a unifying view of new vascular, tracheal, gastrointestinal, oesophageal, and urinary grafts
Repairing tubular tissues—the trachea, the esophagus, urinary and gastrointestinal tracts, and the circulatory system—from trauma or severe pathologies that require resection, calls for new, more effe...
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Dr Petra de Graaf @petradegraaf.bsky.social · 29/05/2025
Check out the RMU Symposium in Tivoli Vredenburg on June 30th! Registration is open for all those interested in Regenerative Medicine We celebrate our 10 year anniversary with key note lectures, workshops, posters, and more! Get a sneak peak of our program below. www.uu.nl/en/research/...
uu.nl
RMU Symposium
Regenerative Medicine Utrecht 10-Year Anniversary Symposium
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Reposted by Dr Petra de Graaf
STRONG-UR @strong-ur.bsky.social · 15/05/2025
🚨 Join the upcoming @erneurogen.bsky.social webinar about the latest evidence on tissue engineering in the urinary tract. 🗓️ 28 May 🕙 18-19h 📍 Online Our project will be presented as an example of ongoing research in this field! 👉 All info: shorturl.at/M1pCd #TissueEngineering #EUproject
strong-ur.eu
eUROGEN webinar: Tissue engineering as applied to the urinary tract - is it a reality? - STRONG-UR
STRONG-UR will be presented during the webinar “Tissue engineering as applied to the urinary tract – is it a reality?” by Dr. Christopher Chapple. The is organised by the ERN eUROGEN. The term ‘tissue...
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Reposted by Dr Petra de Graaf
Science Magazine @science.org · 20/05/2025
Lab-kept bumble bees roll small wooden balls around for no apparent purpose other than fun, a 2022 study reveals. Learn more on #WorldBeeDay: scim.ag/4dAwCuD
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Dr Petra de Graaf @petradegraaf.bsky.social · 20/05/2025
Don’t forget penis cancer! Have your sons vaccinated too #GetVaccinated
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TERMIS-EU @eutermis.bsky.social · 08/05/2025
TERMIS-EU 2025 is coming to Freiburg! 🇩🇪 Join hosts Bernd Rolauffs, Melanie Hart, Günther Schlunck & Thorsten Steinberg, May 20–23. Workshops, cross-disciplinary science & big ideas. #TermisEU2025 #TissueEngineering #RegenerativeMedicine
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Dr Petra de Graaf @petradegraaf.bsky.social · 20/05/2025
Proud of my colleague in @strong-ur.bsky.social Prof. Sandra van Vlierberghe received her @eutermis.bsky.social Mid Term Career Award #TERMISEU2025
Picture of Sandra van Vlierberghe on a podium next to her slide.
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Nature @nature.com · 16/05/2025
These are the striking winners of our 2025 Scientist At Work photo competition, taking viewers on a voyage of discovery that includes the Arctic and Antarctic circles, and a shot from atop a Greek mountain. Read the full stories of these images: go.nature.com/4dqQK2s
Two small figures pose for a photo on top of a large telescope dish which reflects the colours of the aurora in the sky over an Antarctic landscapeIn a wood, surrounded by trees and tall grass, a researcher wearing outdoor gear and a cap, crouches in shallow water next to a large white box and holds several tiny frogs in open handsA figure wearing red overalls illuminated in a doorway that appears to open from a black area of trees and buildings, silhouetted by a starry night skyA researcher wearing high vis jacket and head torch sits in a small boat holding a wide-barrelled air gun. Behind, a fishing trawler surrounded by flocks of sea birds, and snow covered hills on the horizon
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David Grimm @david-grimm.bsky.social · 16/05/2025
"Dolphins call each other’s signature whistles if they get separated. Once, we played one of those whistles while the pair was still together. They responded with a totally different whistle. We call it the 'WTF whistle,' because it really did seem like that’s what they were asking." @science.org
science.org
‘About as close to aliens as we’ll ever get.’ Can AI crack animal language?
Dolittle Prize recognizes breakthroughs in translating “speech” of dolphins, cuttlefish, and other creatures
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Erotic Mythology @aimeemaroux.bsky.social · 01/05/2025
Give it up for these hard working entertainers on Labour Day! #PhallusThursday
Figure group in soft white limestone of a woman and a man with an oversized phallus, dated 305-330 BCE. The nude man is seated, his enlarged phallus extended on ground. A smaller figure of a nude woman playing her harp is seated on the far end of his phallus. The man holds a curious object in front of him – a musical instrument? Some detail are outlined in black paint.
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STRONG-UR @strong-ur.bsky.social · 24/04/2025
🧬 This short video offers a clear and insightful look at how 3D bioprinting works, a key technology driving innovation in regenerative medicine! 📺 Check it out: www.youtube.com/watch?v=uHbn... #3Dprinting #Biotechnology
youtube.com
How to 3D print human tissue - Taneka Jones
YouTube video by TED-Ed
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American Sexual Health Association @ashasexualhealth.bsky.social · 19/04/2025
It's Testicular Cancer Awareness Month 🐿️ 🥜 🌰 Self-exams are important to familiarize yourself with what is normal for you. If you notice any changes or something feels off, take action & see a doctor. #KnowThyNuts #TCisNoJoke #TesticularCancerAwarenessMonth #nuts #cancer @tcsociety.bsky.social
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Jason Moore @moorejh.bsky.social · 20/04/2025
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Dr Petra de Graaf @petradegraaf.bsky.social · 17/04/2025
Great talk with beautiful microscopy pictures yesterday of PhD student Xiaohe #regenativemedicine #TEforUrethroplasty
Lecturehal, presenter Xiaohe just started, Petra sitting front row
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ERN eUROGEN @erneurogen.bsky.social · 02/04/2025
🚨 TONIGHT! Join an ERN eUROGEN webinar: 🖥 Proximal Hypospadias with a Short Urethral Plate 👥 Radim Kočvara, Josef Sedláček, and Marcel Drlík 📅 Wednesday 2 April, 18:00 CET 🔗 bit.ly/eUROGEN02Apr25 #EUfunded #HealthUnion #EU4Health #RareDisease #UroSoMe #Urology #PedUro #SoMe4PedSurg #Hypospadias
bit.ly
All-in-one virtual event platform | Zoom Events
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Alexis Verger 🧬🧫🧪 @alexis-verger.cpesr.fr · 02/04/2025
[Review] Assembly and Dynamics of Transcription Initiation Complexes in @annualreviews.bsky.social www.annualreviews.org/content/jour...
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Dr Petra de Graaf @petradegraaf.bsky.social · 02/04/2025
Our team, proud to be part of this #urology #regenerativemedicine
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Nature @nature.com · 28/03/2025
Biologists have built one of the most detailed pictures of pregnancy's true toll on the body. Read the full story: go.nature.com/4iKaWxZ
A graphic titled "the body's slow recovery from childbirth"
"Researchers examined 76 physiological markers in hundreds of thousands of pregnancies, looking at how look it took for each marker to settle following delivery"
~47% test results stabilished within 1 month of delivery
12% results settle in 4-10 weeks
~41% results take more than 10 weeks to settle
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Dafne Campigli Di Giammartino @dafnecdg.bsky.social · 27/02/2025
To all chromatin and RNA enthusiasts 🧬 🧬 🧬 Our lab 3d-chrom.iit.it has several openings! Looking for a well-paid position in a stimulating environment? Apply here 👇 Senior Bioinformatician iit.taleo.net/careersectio... Senior Molecular Biology Researcher iit.taleo.net/careersectio...
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Jess McLaughlin, PhD (they/them) @jfmclaughlin92.bsky.social · 20/03/2025
"Why don't you buy a new centrifuge" Because everyone knows that any appliances in that shade of yellow will outlive you and your entire family, look at it
An eppendorf centrifuge in that specific nicotine-yellow color from the 80s. It's the exact color as the old fridge in your garage that you keep sodas in that your parents replaced in 1997, and which has outlived a half-dozen of its replacements.
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al-boo @captainacabairbud.myatproto.social · 14/03/2025
idk but this condom tutorial seems to be setting some unrealistic standards
a man standing at a counter with an absolutely enormous chocolate penis
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Dr Petra de Graaf @petradegraaf.bsky.social · 15/03/2025
I never thought I could be here today, still in science, leading a group, in the center of regenerative urology #LongCovidAwarenessDay #LongCovid #PACS
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The Partial Historians 🏺 @partialhistorians.bsky.social · 06/03/2025
It wasn’t just the Romans who were keen on the symbolism of the phallus, here the Egyptian god Osiris reveals maybe more than anyone was expecting! #PhallusThursday #AncientBluesky🏺
Description from the Egypt Museum, Cairo: “This baked clay statuette depicts the god Osiris naked, wears a tripartite wig and a divine beard. The penis and testicles are shaped separately and inserted into an oval recess. The black stone pupils are placed in a white stucco eyeball. The eye framing and eyebrows are inlaid sheet gold. Within the mummy case were 12 amulets. Originally, this statuette was wrapped in bituminous canvas. Ptolemaic Period, reign of Ptolemy VI Philometor, ca. 180-145 BCE. Now in the Kunsthistorisches Museum, Vienna. Inv. 10077.”
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Erotic Mythology @aimeemaroux.bsky.social · 06/03/2025
When tasteful sophrosyne is not your thing. #PhallusThursday
Red-figure vase painting of a naked woman standing upright and holding a large dildo with scrotum, pointing the tip towards her rear.
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