Iodixanol-UWS Purification and Culture of Pig Islets Xeno Transplants • Cell Transplant Society 1999 • @1MEMO 20250202


Iodixanol-UWS Purification and Culture of Pig Islets Xeno Transplants • Cell Transplant Society 1999 • Michel van der Burg • Miracles.Media • @1MEMO 20250202

Slideshow (digitally remastered) oral presentation Michel van der Burg, Cell Transplant Society congress 1999 in Montreux, Switzerland (1)

The Leiden Islet Laboratory developed a novel Iodixanol-UWS density gradient for purification of the islets of Langerhans from the pancreas in the difficult pig model.

Pig islet isolation from the pancreas of slaughterhouse sows was markedly improved by keeping the islets in the UW donor organ preservation solution (UWS) both during the isolation of islets (using the Liberase enzyme blend) and purification of the islets using our novel Iodixanol-UWS density gradient.

Xeno transplantation of these 1-day-cultured pig islets restored normal blood sugar levels in diabetic mice.

PDF slideshow oral presentation Michel van der Burg, Cell Transplant Society congress 1999 in Montreux, Switzerland

Iodixanol-UWS Purification and Culture of Pig Islets Xeno Transplants • Cell Transplant Society 1999 • Michel van der Burg • Miracles.Media • @1MEMO 20250202_2 • TakeNode 8bd79256-78b2-4d8e-8d48-6da41102dc2d • Download file available below 1MEMO_20250202_2

Notes

1) Van der Burg MPM, Rijkelijkhuizen JKRA, Zwaan RP, Bouwman E. Adult pig islet recovery during Liberase isolation, OptiPrep purification and culture for transplantation in nude mice. 4th International congress of the Cell Transplant Society, Montreux (Switzerland) March 21–24, 1999 .

2) Van der Burg MPM, Rijkelijkhuizen JKRA, Zwaan RP, Bouwman E. Adult pig islet recovery during Liberase isolation, OptiPrep purification and culture for transplantation in nude mice (Abstract). Cell Transplant 1999; 8: 185. Download abstract, available below 1MEMO_20250202_3

Citation info : Iodixanol-UWS Purification and Culture of Pig Islets Xeno Transplants • Cell Transplant Society 1999 • Michel van der Burg • Miracles.Media • @1MEMO 20250202 • TakeNode f9d1fdc5-21e4-4932-b995-4c97639945fe • URL michelvanderburg.com/2025/02/02/

Viability of Fresh vs Cultured Pig Islets for Transplants • Cell Transplant Society 1999 Montreux • 20241204


Oral presentation Michel van der Burg, Cell Transplant Society congress 1999 in Montreux, Switzerland

A novel iodixanol density gradient for purification of pancreatic islets was developed in the difficult pig model of islet isolation. Viability of freshly isolated islets is not guaranteed.
After short-term storage of the islets in culture, pig islets restored normal blood sugar levels after xeno transplantation in diabetic mice.

1-Day Cultered Islets (extra slide) • @1MEMO 20241204_1

Slideshow (pdf)

Viability of Fresh vs Cultured Pig Islets for Transplants • Montreux Cell Transplant Society 1999 • Michel van der Burg • Miracles.Media • @1MEMO 20241204_2 • TakeNode e745d625-27c2-4eb8-b4c2-4300623c3303 • File 1MEMO_20241204_2

Rijkelijkhuizen JKRA, Bouwman E, Van der Burg MPM. Viability of fresh vs cultured pig islets for transplants. 4th International congress of the Cell Transplant Society, Montreux (Switzerland) March 21–24, 1999

Other Presentations in Montreux

Van der Burg MPM, Rijkelijkhuizen JKRA, Zwaan RP, Bouwman E. Adult pig islet recovery during Liberase isolation, OptiPrep purification and culture for transplantation in nude mice. 4th International congress of the Cell Transplant Society, Montreux (Switzerland) March 21–24, 1999 . The Sydney 1999 presentation of this work has been posted – @1MEMO 20241203

Van der Burg MPM, Ranuncoli A, Molano R, Kirlew T, Ringers J, Bouwman E, Terpstra OT, Ricordi C. Optiprep for human islet purification. 4th International congress of the Cell Transplant Society, Montreux (Switzerland) March 21–24, 1999 . The Igls 1999 presentation of this work has been posted – @1MEMO 20241202

Citation info : Viability of Fresh vs Cultured Pig Islets for Transplants • Cell Transplant Society 1999 Montreux • Michel van der Burg • Miracles.Media • @1MEMO 20241204 • TakeNode 3ba1c894-eb71-4c3f-89aa-198c48cd480c • URL michelvanderburg.com/2024/12/04/

Iodixanol Purification of Porcine Islets • Sydney IPITA 1999 • 20241203

Slides oral presentation Michel van der Burg, IPITA congress 1999 in Sydney, Australia

A novel iodixanol density gradient for purification of pancreatic islets was developed in the difficult pig model. The pig islets restored normal blood sugar levels after xeno transplantation in diabetic mice.


Slideshow (pdf) oral presentation Michel van der Burg, IPITA congress 1999 in Sydney, Australia

Recovery of adult pig islets during isolation using Liberase vs collagenase-P, purification in OptiPrep-UWS, and culture for transplantation in nude mice • Sydney IPITA 1999 • Michel van der Burg • Miracles.Media • @1MEMO 20241203_2 • TakeNode 5f53ae49-6fb8-4bef-a434-ac2ce8151c2a • File 1MEMO_20241203_2

Van der Burg MPM, Rijkelijkhuizen JKRA, Zwaan RP, Bouwman E. Recovery of adult pig islets during isolation using Liberase vs collagenase-P, purification in OptiPrep-UWS, and culture for transplantation in nude mice. 7th World congress of the International Pancreas & Islet Transplant Association, Sydney (Australia) August 22–25, 1999

Citation info : Iodixanol Purification of Porcine Islets • Sydney IPITA 1999 • Michel van der Burg • Miracles.Media • 1MEMO 20241203 • TakeNode ea1f1abd-6227-4ae6-985b-f8188310cd24 • URL michelvanderburg.com/2024/12/03/

Efficacy of the novel iodixanol-UWS density gradient for human islet purification • Igls Aidspit 1999 • 20241202

Efficacy of the novel iodixanol-UWS density gradient for human islet purification • Igls Aidspit 1999 • Michel van der Burg • Miracles.Media • 20241202_1

I started an archive at Archive.org November 11, 2010 with this slideshow (pdf) of my January 1999 oral presentation in Igls (Innsbruck), Austria, at the 18th Workshop of the AIDSPIT (Artificial Insulin Delivery Systems, Pancreas and Islet Transplantation) Study Group. (Now known as AIDPIT).

The presented results of this innovative islet purification method — developed over nearly 10 years (from 1989) in our Leiden islet laboratory (LUMC) — were the outcome of work I had done spring 1998 with the human islet transplantation group of Camillo Ricordi at the Diabetes Research Institute in Miami , Florida, USA.

Slideshow (pdf) Archive.org

Description

Efficacy of the novel iodixanol-UWS density gradient for human islet purification • Igls Aidspit 1999

Slides oral presentation Michel van der Burg, Aidspit meeting 25 Jan 1999, in Igls, Austria

Van der Burg MPM, Ranuncoli A, Molano R, Kirlew T, Ringers J, Bouwman E, Ricordi C. Efficacy of the novel iodixanol-UWS density gradient for human islet purification. 18th Workshop Aidspit, Igls (Austria) Jan. 24-26, 1999

Program :
18TH WORKSHOP OF THE AIDSPIT STUDY GROUP – JANUARY 24-26, 1999 – IGLS/AUSTRIA . MONDAY, JAN 25, 1999 – KONGRESSHAUS IGLS, MAIN LECTURE HALL
SESSION 2 – ISLET ISOLATION AND TRANSPLANTATION
CHAIRMEN:K. FEDERLIN, GIESSEN, GERMANY – G. POZZA, MILAN, ITALY 9.00 – 10.30 FREE COMMUNICATIONS
9.45- Efficacy of the novel iodixanol-UWS density gradient for human islet purification.
Van der Burg MPM, Ranuncoli A, Molano R, Kirlew T, Ringers J, Bouwman E, Ricordi C; Leiden, The Netherlands and Miami, USA

File : mvdb19990118_1534_AIDSPIT.pdf | Uploaded 20101111 and replaced by the same pdf with updated metadata of the document on 20101112 (see Notes section).

Citation info (Archive file) : Efficacy of the novel iodixanol-UWS density gradient for human islet purification • Igls Aidspit 1999 • Michel van der Burg • Miracles.Media • 20241202 • URL https://archive.org/details/EfficacyOfTheNovelIodixanol-uwsDensityGradientForHumanIslet • TakeNode 54cc8b66-672e-4b13-913c-449038ed0521

Video Slideshow

The slideshow video embedded below, was first posted at 1-memo.com in 2018 as Human Islet Purification Miami 1998 • @1MEMO 20181102

Notes

The slideshow pdf file is available for download at Archive.org. I advise against the other download options presented by Archive.org , which do not correctly represent the slideshow.

The file was also uploaded to Scribd at the same time – URL https://www.scribd.com/document/42197150/Efficacy-of-the-novel-iodixanol-UWS-density-gradient-for-human-islet-purification-michelvanderburg-19990125

Abstract

Van der Burg MPM, Ranuncoli A, Molano R, Kirlew T, Ringers J, Bouwman E, Ricordi C. Efficacy of the novel iodixanol-UWS density gradient for human islet purification (Abstract). Acta Diabetol 1998; 35: 247. View or download abstract below .

Updates

20251101 – Vimeo video replaced by YouTube copy

20251101 – Added PDF copy abstract – file 1MEMO_20251102_1.pdf

Citation info (this post) : Efficacy of the novel iodixanol-UWS density gradient for human islet purification • Igls Aidspit 1999 • Michel van der Burg • Miracles.Media • 20241202 • URL michelvanderburg.com/2024/12/02/

Isolation of Islets of Langerhans for Transplantation in Type-1 Diabetic Patients


Isolation of Islets of Langerhans for Transplantation in Type-1 Diabetic Patients.
Here a film made of my ‘powerpoint’ presentation Feb 22, 2000 – on behalf of our Surgical Department – at the Opening Symposium of the Interdivisional GMP (‘Good Manufacturing Practice’) facility of the Leiden University Medical Centre – the LUMC in Leiden, Holland.

Background
I first started – with a background in biochemistry and philosophy – some 20 years earlier (from 1981) research at the Department of Surgery of the Leiden University Hospital (AZL) in the field of transplantation of the pancreas organ to cure diabetes.

Succesful Experiment Islet Transplantation
From 1986 my focus shifted to innovative procedures for the isolation out of the pancreas organ, of the ca 1 million islets of Langerhans – the insulin producing cell clumps with a size between ca 0.1 to 1 mm , that is 0.004 to 0,04 inch.
In 1989 we performed the first successful autologous transplantations in Holland (in collaboration with the Minneapolis Islet Lab with Jane Field and David Sutherland) – for the first time world-wide with pure islets using our novel procedure of using the organ preservation UW solution (University of Wisconsin / collaboration with dr Robert Carter , Du Pont, UK) during isolation in a pre-clinical large animal diabetes model – with long term transplant functioning with near-normal blood sugar regulation.

First series of human islet isolations , 1989-1990
Next in 1989-1990 we performed a first series of islet isolations from human donor pancreases using our novel techniques of isolation and purification in UW organ preservation solution – in association with a European Concerted Action for the Treatment of Diabetes – the Brussels headed (Daniel Pipeleers) ‘Multicenter program on the treatment of diabetes by islet cell transplantation’.

Exploring human islet work
Subsequently – after some years of exploring options for animal to human islet transplantation , using pig pancreas islets – so-called xenotransplantation – I was asked in 1997 to explore the requirements for operationalization of clinical islet transplantation in the LUMC. December 1997 our Surgical Department decided to go for it.

Establishing the human islet isolation laboratory in Leiden.
In 1998 after a month working in dr Camillo Ricordi’s Diabetes Research Institute in Miami, I started a large series of human islet isolation procedures in Leiden, and from september 1998 documenting the detailed GMP (‘Good Manufacturing Practice’) standard operating procedures, as well as ‘building’ our clinical islet isolation clean room with help from the Miami team in close cooperation with dr. Amon Wafelman (department of Clinical Pharmacy & Toxicology) managing the building of our brand new Interdivisional GMP-facility LUMC (IGFL) of six clean rooms and two chemical product laboratories – that was opened officially Feb 22, 2000 with the symposium, a film, and a tour in the GMP facility.
One year later the GMP islet facility was fully operational and summer 2001 we got a cautious green light (GMP license) for clinical transplantation of any high quality – approved – islet preparations.
Around the same time islet transplantation suddenly became very promising with ‘The Edmonton protocol’. However with the fast increase of logistic and financial demands, and reorganization between LUMC divisions it took till 2007 to finally start first transplants by an expanded islet team in the LUMC clinical islet center in Leiden.
Worldwide since 2000 several hundred people have received islet transplants that generally do not result in long term insulin independence , but do help sugar regulation in the transplant recipients.

Notes :
Links to some publications, news paper reports etc will follow later.

Updates:

Post updated with more details 20191215

Presentation ‘Isolation of Islets of Langerhans for Transplantation in Type-1 Diabetic Patients’ by Michel van der Burg, Feb 22, 2000 – Opening Symposium of the Interdivisional GMP facility of the Leiden University Medical Centre, Leiden, Netherlands. Film : 20191213 Michel van der Burg | miracles.media

Human Islet Purification Miami 1998 • @1MEMO 20181102

Efficacy of the novel iodixanol-UWS density gradient for human islet purification

Slideshow (video) of my January 1999 oral presentation in Igls (Innsbruck), Austria, at the 18th Workshop of the AIDSPIT (Artificial Insulin Delivery Systems, Pancreas and Islet Transplantation) Study Group. (Now known as AIDPIT).

These results of this innovative islet purification method developed in our Leiden islet laboratory (LUMC) were the outcome of work I had done spring 1998 with the islet group of Camillo Ricordi in the “fast track” center for diabetes research at the Diabetes Research Institute in Miami , Florida, USA.

Notes

The slideshow (pdf) was first uploaded Nov. 11, 2010 at at Scribd , and Archive.org • URL http://archive.org/details/EfficacyOfTheNovelIodixanol-uwsDensityGradientForHumanIslet

Original video title (file name) : 20181102 ~ Human Islet Purification Miami 1998

Updates:


20241202 – Text updated with extra info. Youtube video in post replaced by Vimeo edition. Copied 1-memo post to michelvanderburg.com .

20251101 – Vimeo video replaced with Youtube copy . Added @1MEMO in post title and citation info

Citation info : Human Islet Purification Miami 1998 • Michel van der Burg • Miracles.Media • @1MEMO 20181102 • URL michelvanderburg.com/2018/11/02/ • TakeNode 3f2ec4d2-afe0-4580-b055-92a2f231a4fa