keyword
MENU ▼
Read by QxMD icon Read
search

Islet transplant

keyword
https://www.readbyqxmd.com/read/29676546/alginate-catechol-cross-linking-interferes-with-insulin-secretion-capacity-in-isolated-murine-islet-cells
#1
Yu Sik Kim, Seung Woo Cho, Bomin Ko, Jisoo Shin, Chul Woo Ahn
Over the past three decades, human pancreatic islet isolation and transplantation techniques have developed as a routine clinical procedure for selected patients with type 1 diabetes mellitus. However, due to the donor shortage and required chronic systemic immunosuppression, the widespread application of islet transplantation is limited. To overcome these limitations, providing a physical barrier to transplanted islet cells with encapsulating biomaterial has emerged as a promising approach to enhance engraftment and promote islet survival post-transplantation...
April 2018: Diabetes & Metabolism Journal
https://www.readbyqxmd.com/read/29675567/human-urine-derived-stem-cells-play-a-novel-role-in-the-treatment-of-stz-induced-diabetic-mice
#2
Tianxue Zhao, Deng Luo, Yun Sun, Xin Niu, Yang Wang, Chen Wang, Weiping Jia
Human urine-derived stem cells (hUSCs) are a potential stem cell source for cell therapy. However, the effect of hUSCs on glucose metabolism regulation in type 1 diabetes was not clear. Therefore, the aim of the study was to evaluate whether hUSCs have protective effect on streptozotocin (STZ)-induced diabetes. hUSCs were extracted and cultivated with a special culture medium. Flow cytometry analysis was applied to detect cell surface markers. BALB/c male nude mice were either injected with high-dose STZ (HD-STZ) or multiple low-dose STZ (MLD-STZ)...
April 19, 2018: Journal of Molecular Histology
https://www.readbyqxmd.com/read/29675353/magnetic-particle-imaging-of-islet-transplantation-in-the-liver-and-under-the-kidney-capsule-in-mouse-models
#3
Ping Wang, Patrick W Goodwill, Prachi Pandit, Jeff Gaudet, Alana Ross, Junfeng Wang, Elaine Yu, Daniel W Hensley, Timothy C Doyle, Christopher H Contag, Steven Conolly, Anna Moore
Background: Islet transplantation (Tx) represents the most promising therapy to restore normoglycemia in type 1 diabetes (T1D) patients to date. As significant islet loss has been observed after the procedure, there is an urgent need for developing strategies for monitoring transplanted islet grafts. In this report we describe for the first time the application of magnetic particle imaging (MPI) for monitoring transplanted islets in the liver and under the kidney capsule in experimental animals...
March 2018: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/29673066/total-pancreaticoduodenectomy-with-autologous-islet-transplantation-fourteen-years-after-liver-contained-composite-visceral-transplantation
#4
Ahmed Nassar, Cristiano Quintini, Guilherme Costa, Elizabeth Lennon, Rita Bottino, Betul Hatipoglu, Koji Hashimoto, Masato Fujiki, Fouad Kandeel, R Matthew Walsh, Kareem Abu-Elmagd
Chronic pancreatitis (CP) is a severely disabling disorder with potential detrimental effects on quality of life, gut function, and glucose homeostasis. Disease progression often results in irreversible morphological and functional abnormalities with development of chronic pain, mechanical obstruction, and pancreatic insufficiency. Along with comprehensive medical management, the concept of total pancreatectomy and islet autotransplantation (TP-AIT) was introduced forty years ago for patients with intractable pain and preserved beta-cell function...
April 19, 2018: American Journal of Transplantation
https://www.readbyqxmd.com/read/29673064/successful-pregnancy-and-delivery-after-simultaneous-islet-kidney-transplantation
#5
Michela Assalino, Michele Podetta, Sandrine Demuylder-Mischler, Katyuska Francini, Nadine Pernin, Jean-Pierre Randin, Domenico Bosco, Axel Andres, Thierry Berney
Allogeneic islet of Langerhans transplantation is a recognized beta-cell replacement therapy for patients affected by type 1 diabetes mellitus. Type 1 diabetes mellitus is a condition associated with an increased risk of adverse outcomes for pregnant women and fetuses We report the case of a 29 year-old woman with type 1 diabetes mellitus, who underwent successful allogeneic islet transplantation with simultaneous kidney transplantation. She achieved durable insulin independence after two islet infusions. Pregnancy was desired and planned 2 years after last islet infusion...
April 19, 2018: American Journal of Transplantation
https://www.readbyqxmd.com/read/29671177/tri-modal-in-vivo-imaging-of-pancreatic-islets-transplanted-subcutaneously-in-mice
#6
Sayuan Liang, Karim Louchami, Bryan Holvoet, Rein Verbeke, Christophe M Deroose, Bella Manshian, Stefaan J Soenen, Ine Lentacker, Uwe Himmelreich
PURPOSE: Transplantation of pancreatic islets (PIs) is a promising therapeutic approach for type 1 diabetes. The main obstacle for this strategy is that the outcome of islet engraftment depends on the engraftment site. It was our aim to develop a strategy for using non-invasive imaging techniques to assess the location and fate of transplanted PIs longitudinally in vivo. PROCEDURES: In order to overcome the limitations of individual imaging techniques and cross-validate findings by different modalities, we have combined fluorine magnetic resonance imaging (F-19 MRI), fluorescence imaging (FLI), and bioluminescent imaging (BLI) for studying subcutaneously transplanted PIs and beta cell-like cells (INS-1E cell line) in vivo...
April 18, 2018: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
https://www.readbyqxmd.com/read/29669347/combined-pancreatic-islet-lung-liver-transplantation-in-a-pediatric-patient-with-cystic-fibrosis-related-diabetes
#7
Philippe Klee, Mirjam Dirlewanger, Vanessa Lavallard, Valerie A McLin, Anne Mornand, Nadine Pernin, Laetitia-Marie Petit, Paola M Soccal, Barbara E Wildhaber, Urs Zumsteg, Jean-Louis Blouin, Thierry Berney, Valerie M Schwitzgebel
BACKGROUND: Cystic fibrosis-related diabetes (CFRD) is the most frequent extrapulmonary complication of cystic fibrosis (CF). METHODS: We report the first combined pancreatic islet-lung-liver transplantation in a 14-year-old adolescent. CFTR was analyzed by Sanger sequencing. Further genes were analyzed by high-throughput sequencing. RESULTS: The patient was diagnosed with CF at the age of 14 months. Nine years later, after diagnosis of CFRD, the patient's BMI and lung function began to decline...
April 18, 2018: Hormone Research in Pædiatrics
https://www.readbyqxmd.com/read/29661473/silk-fibroin-preserves-beta-cell-function-under-inflammatory-stress-while-stimulating-islet-cell-surface-glut2-expression
#8
N Ashari, H W Pang, T Simon, Y Xiong, J M Coburn, J S Bromberg, D L Kaplan, J McLenithan, M J Fontaine
Silk fibroin is a novel biomaterial for enhancing transplanted islet cell function and survival. This study investigated whether silk fibroin may have unique properties that improve islet function in the face of inflammatory-mediated stress during transplantation. Murine islet function was tested in vitro with either silk fibroin or alginate and challenged with inflammatory cytokines. The glucose-stimulated insulin secretion index for all conditions decreased with inflammatory cytokines, but was better preserved for islets exposed to silk compared to those exposed to alginate or medium...
April 9, 2018: Cellular Immunology
https://www.readbyqxmd.com/read/29630119/intramuscular-islet-allotransplantation-in-type-1-diabetes-mellitus
#9
F Bertuzzi, G Colussi, A Lauterio, L De Carlis
OBJECTIVE: Alternative sites to the liver for islet transplantation have been studied for a long time. Intramuscular islet transplantation appears to be an alternative site to the liver because of the ease of access. First islet autotransplantations were reported in patients after total pancreatectomies. The transplanted islets showed a proper revascularization and their function was observed for up to 2 years after the implant. However, only a few cases of autotransplantation and no allotransplantation have been performed...
March 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29622345/early-islets-and-mesenchyme-from-an-injured-adult-pancreas-improve-syngeneic-engraftments-and-islet-graft-function-in-diabetic-rats
#10
Venant Tchokonte-Nana, Juziel Kampando Manda
A decrease in mass of isografts and a decline in islet function are major challenges in islet transplantations. Despite this, transplantation of 84 h harvested pancreatic duct ligation (PDL) tissues have been shown to have the same functional ability to foetal pancreata, but there was only 40% success in reverting hyperglycaemia. We tested the potential of early islets with mesenchymal stromal cells (MSCs) to promote isogeneic grafts survival and to restore normoglycemia in diabetic rats, in comparison with late islets...
April 2, 2018: Acta Histochemica
https://www.readbyqxmd.com/read/29621044/impact-of-oxygen-on-pancreatic-islet-survival
#11
Hirotake Komatsu, Fouad Kandeel, Yoko Mullen
Pancreatic islet transplantation is a promising treatment option for individuals with type 1 diabetes; however, maintaining islet function after transplantation remains a large challenge. Multiple factors, including hypoxia associated events, trigger pretransplant and posttransplant loss of islet function. In fact, islets are easily damaged in hypoxic conditions before transplantation including the preparation steps of pancreas procurement, islet isolation, and culture. Furthermore, after transplantation, islets are also exposed to the hypoxic environment of the transplant site until they are vascularized and engrafted...
April 4, 2018: Pancreas
https://www.readbyqxmd.com/read/29620617/pancreas-transplantation-from-pediatric-donors-a-single-center-experience
#12
Mario Spaggiari, Caterina Di Bella, Pierpaolo Di Cocco, Maya Campara, Kelly Galen, Federico Gheza, Jose Oberholzer, Enrico Benedetti, Ivo Tzvetanov
BACKGROUND: Pancreas allografts from pediatric donors are considered less suitable due to the increased risk of surgical complications and reduced islet cell mass that may compromise function. METHODS: All pancreatic transplants, procured from donors <18 years old, between January 2007 and March 2017, were included in the analysis. The grafts were subdivided into 3 groups by donor's weight: <30kg, 30-60kg, >60kg. Analysis of patient and graft survival was done between the groups, and subsequently between the pediatric cohort and the adult-donor control group...
April 3, 2018: Transplantation
https://www.readbyqxmd.com/read/29611212/design-of-bioartificial-pancreases-from-the-standpoint-of-oxygen-supply
#13
Hiroo Iwata, Yusuke Arima, Yusuke Tsutsui
A bioartificial pancreas (BAP), in which islets of Langerhans (islets) are enclosed in a semipermeable membrane, has been developed to realize islet transplantation without the use of immunosuppressive drugs. Although recent progress in induced pluripotent stem (iPS) and embryonic stem (ES) cells has attracted attention owing to the potential applications of these cells as insulin-releasing cells, concerns about the safety of implantation of these cells remain. The use of the BAP has the advantage of easy removal if insulin-releasing cells derived from iPS/ES cells undesirably proliferate and form tumors in the BAP...
April 2, 2018: Artificial Organs
https://www.readbyqxmd.com/read/29609688/pdx1-transfection-induces-human-adipose-derived-stem-cells-differentiation-into-islet-like-cells-what-is-the-benefit-for-diabetic-rats
#14
Jian Gao, Yue Yuan, Yuqing Chen
In this study, we observed the differentiation potential of human ADMSCs (hADMSCs) into functional islet-like cells and the therapeutic effect of hADMSCs transplantation in diabetic rats. Firstly, the PDX1 gene was transfected into hADMSCs by an adenovirus. Cell differentiation and insulin secretion were identified and detected by dithizone staining and ELISA, respectively. Twenty male Sprague-Dawley rats were randomly divided into control group (n=4), diabetes group (n=8) and transplantation group (n=8). Rats in the latter two groups were subjected to making diabetic models by 65 mg/kg streptozotocin injection...
April 2, 2018: Die Pharmazie
https://www.readbyqxmd.com/read/29606260/-transplantation-strategy-in-type-1-diabetic-patients
#15
Fanny Buron, Lionel Badet, Emmanuel Morelon
Beta cell replacement by pancreas or Langerhans islets transplantation is the only way to restore glucose homeostasis in type 1 diabetic patients. The counterpart is the need for long-term immunosuppression. These transplantations are therefore mainly indicated for patients candidates for kidney transplantation and for patients with poor quality of life due to unstable diabetes with life-threatening hypoglycemic events. Both beta cell replacement techniques have different benefits and risks and should be adapted to each type 1 diabetic patient...
April 2018: Néphrologie & Thérapeutique
https://www.readbyqxmd.com/read/29603910/insulin-secretion-kinetics-from-single-islets-reveals-distinct-sub-populations
#16
Rajesh Guruswamy Damodaran, Alexandre Poussard, Benoît Côté, Parker L Andersen, Patrick Vermette
Type II diabetes progresses with inadequate insulin secretion and prolonged elevated circulating glucose levels. Also, pancreatic islets isolated for transplantation or tissue engineering can be exposed to glucose over extended timeframe. We hypothesized that isolated pancreatic islets can secrete insulin over a prolonged period of time when incubated in glucose solution and that not all islets release insulin in unison. Insulin secretion kinetics was examined and modeled from single mouse islets in response to chronic glucose exposure (2...
March 31, 2018: Biotechnology Progress
https://www.readbyqxmd.com/read/29603452/pancreas-preservation-fluid-microbial-contamination-is-associated-with-poor-islet-isolation-outcomes-a-multi-centre-cohort-study
#17
Raphael P H Meier, Diego O Andrey, Pamela Sun, Nadja Niclauss, Benoît Bédat, Sandrine Demuylder-Mischler, Sophie Borot, Pierre-Yves Benhamou, Anne Wojtusciszyn, Fanny Buron, Nadine Pernin, Yannick D Muller, Domenico Bosco, Christian van Delden, Thierry Berney
BACKGROUND: The microbiological safety of islet preparations is paramount. Preservation medium contamination is frequent and its impact on islet yield and function remains unclear. METHODS: Microbiological samples collected during islet isolations from 2006 to 2016 were analyzed and correlated to isolation and allo- and auto-transplantation outcomes. RESULTS: Microbial contamination of preservation medium was found in 64.4% of processed donor pancreases (291/452)...
March 30, 2018: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/29601985/mechanical-characterization-and-numerical-simulation-of-a-subcutaneous-implantable-3d-printed-cell-encapsulation-system
#18
Federica Adamo, Marco Farina, Usha R Thekkedath, Alessandro Grattoni, Raffaella Sesana
Cell transplantation in bioengineered scaffolds and encapsulation systems has shown great promise in regenerative medicine. Depending on the site of implantation, type of cells and their expected function, these systems are designed to provide cells with a physiological-like environment while providing mechanical support and promoting long-term viability and function of the graft. A minimally invasive 3D printed system termed neovascularized implantable cell homing and encapsulation (NICHE) was developed in polylactic acid for subcutaneous transplantation of endocrine cells, including pancreatic islets...
March 21, 2018: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29601863/culturing-functional-pancreatic-islets-on-%C3%AE-5-laminins-and-curative-transplantation-to-diabetic-mice
#19
Kristmundur Sigmundsson, Juha R M Ojala, Miina K Öhman, Anne-May Österholm, Aida Moreno-Moral, Anna Domogatskaya, Li Yen Chong, Yang Sun, Xiaoran Chai, Joseph A M Steele, Benjamin George, Manuel Patarroyo, Ann-Sofie Nilsson, Sergey Rodin, Sujoy Ghosh, Molly M Stevens, Enrico Petretto, Karl Tryggvason
The efficacy of islet transplantation for diabetes treatment suffers from lack of cadaver-derived islets, islet necrosis and long transfer times prior to transplantation. Here, we developed a method for culturing mouse and human islets in vitro on α5-laminins, which are natural components of islet basement membranes. Adhering islets spread to form layers of 1-3 cells in thickness and remained normoxic and functional for at least 7 days in culture. In contrast, spherical islets kept in suspension developed hypoxia and central necrosis within 16 h...
March 27, 2018: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/29599125/establishment-of-human-pluripotent-stem-cell-derived-pancreatic-%C3%AE-like-cells-in-the-mouse-pancreas
#20
Haiting Ma, Katherine J Wert, Dmitry Shvartsman, Douglas A Melton, Rudolf Jaenisch
Type 1 diabetes is characterized by autoimmune destruction of β cells located in pancreatic islets. However, tractable in vivo models of human pancreatic β cells have been limited. Here, we generated xenogeneic human pancreatic β-like cells in the mouse pancreas by orthotopic transplantation of stem cell-derived β (SC-β) cells into the pancreas of neonatal mice. The engrafted β-like cells expressed β cell transcription factors and markers associated with functional maturity. Engrafted human cells recruited mouse endothelial cells, suggesting functional integration...
March 29, 2018: Proceedings of the National Academy of Sciences of the United States of America
keyword
keyword
10281
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"