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pancreatic Transplant

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https://www.readbyqxmd.com/read/28731996/-pancreatitis-genes-and-islet-cells-auto-transplant-updates-and-new-horizons
#1
Edgardo D Rivera Rivera
Pancreatitis is an inflammation of the pancreas that can progress from an acute presentation to an acute recurring presentation and eventually to chronic pancreatitis, which is characterized by irreversible morphological changes and scarring of the pancreas. The entity known as hereditary pancreatitis has been recognized in the literature for years and certainly the discovery of the PRSS1 gene in 1996 marked the beginning of a new era of genetic discoveries associated with the disease. Since then, multiple genes have been described as the causing agents of pancreatitis or disease modifiers, some of the most important ones being the PRSS1, SPINK1, CFTR, CASR, CTRC, CLDN2, and CPA1...
April 2017: Revista de Gastroenterología del Perú: órgano Oficial de la Sociedad de Gastroenterología del Perú
https://www.readbyqxmd.com/read/28719390/total-pancreatectomy-with-islet-autotransplantation-recent-updates-and-outcomes
#2
Yoshitaro Shindo, Mazhar A Kanak
PURPOSE OF REVIEW: Total pancreatectomy with islet autotransplantation (TPIAT) is a reliable therapy to retain endocrine function, to alleviate pain and improve quality of life in adult and pediatric patients suffering from refractory chronic pancreatitis and recurrent acute pancreatitis. Recently, an expansion of indications to include benign and malignant pancreatic disease has been suggested. Improved methods for evaluating the functional quality of islets and predicting transplant outcome have been discussed...
July 14, 2017: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/28719059/pancreatic-allograft-thrombosis-suggestion-for-a-ct-grading-system-and-management-algorithm
#3
Abdul Hakeem, John Chen, Satheesh Iype, Menna Clatworthy, Christopher Watson, Edmund M Godfrey, Sara Upponi, Kourosh Saeb-Parsy
Pancreatic allograft thrombosis (PAT) remains the leading cause of non-immunological graft failure. Herein we propose a new CT grading system of PAT to identify risk factors for allograft loss and outline a management algorithm by retrospective review of consecutive pancreatic transplants between 2009-2014. Triple-phase CT scans were graded independently by two radiologists as; Grade 0 - no thrombosis, Grade 1 - peripheral thrombosis, Grade 2 - intermediate non-occlusive thrombosis and Grade 3 - central occlusive thrombosis...
July 18, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28715390/mammalian-cell-encapsulation-in-alginate-beads-using-a-simple-stirred-vessel
#4
Corinne A Hoesli, Roger L J Kiang, Kamini Raghuram, René G Pedroza, Karen E Markwick, Antonio M R Colantuoni, James M Piret
Cell encapsulation in alginate beads has been used for immobilized cell culture in vitro as well as for immunoisolation in vivo. Pancreatic islet encapsulation has been studied extensively as a means to increase islet survival in allogeneic or xenogeneic transplants. Alginate encapsulation is commonly achieved by nozzle extrusion and external gelation. Using this method, cell-containing alginate droplets formed at the tip of nozzles fall into a solution containing divalent cations that cause ionotropic alginate gelation as they diffuse into the droplets...
June 29, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28708597/mri-based-evaluation-of-multiorgan-iron-overload-is-a-predictor-of-adverse-outcomes-in-pediatric-patients-undergoing-allogeneic-hematopoietic-stem-cell-transplantation
#5
Natalia Maximova, Massimo Gregori, Giulia Boz, Roberto Simeone, Davide Zanon, Giulia Schillani, Floriana Zennaro
The medical records of 44 pediatric patients who underwent allogeneic transplantation from 2011 to 2015 were retrospectively reviewed. Magnetic resonance imaging was used to measure iron concentrations in the liver, spleen, pancreas and bone. These patients were divided into two groups, 18 with non-elevated (< 100 μmol/g; Group 1) liver iron concentration before transplantation and 26 with elevated (> 100 μmol/g; Group 2) concentration . We compared transplant-related outcomes in the two groups. Iron overload was a negative prognostic risk factor for sinusoidal obstruction syndrome (OR = 17), osteoporosis (OR = 6...
July 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/28706979/the-optimization-of-short-term-hepatocyte-preservation-before-transplantation
#6
Kengo Fukuoka, Akiko Inagaki, Yasuhiro Nakamura, Muneyuki Matsumura, Satoru Yoshida, Takehiro Imura, Yasuhiro Igarashi, Shigehito Miyagi, Kazuo Ohashi, Shin Enosawa, Takashi Kamei, Michiaki Unno, Noriaki Ohuchi, Susumu Satomi, Masafumi Goto
BACKGROUND: No optimal methods for short-term hepatocyte preservation have been established. We have recently developed a prominent oxygen-permeable bag (Tohoku Device [TD]) for pancreatic islet culture and transplantation. In this study, we investigated whether TD is also effective for hepatocyte preservation and tried to optimize other conditions. METHODS: Hepatocytes were preserved in the following conditions, and their outcomes were observed. First, the effectiveness of TD was investigated...
July 2017: Transplantation Direct
https://www.readbyqxmd.com/read/28706856/disseminated-nocardia-cyriacigeorgia-causing-pancreatitis-in-a-haploidentical-stem-cell-transplant-recipient
#7
Jason Chen, Jonathan Pan, Joanne Filicko-O'Hara, Margaret Kasner, Phyllis Flomenberg
We report the first published case of acute pancreatitis secondary to disseminated nocardiosis in a hematopoietic stem cell transplant (HSCT) recipient on chronic immunosuppression for graft-versus-host disease (GVHD). Nocardiosis in the HSCT population is relatively rare, and has not yet been described in haploidentical HSCT recipients. Our patient is a 28-year-old male with a history of haploidentical HSCT and GVHD of the skin and lung who was admitted to the hospital with acute pancreatitis. The workup for the etiology of his pancreatitis was initially unrevealing...
2017: IDCases
https://www.readbyqxmd.com/read/28696022/outcomes-in-pancreas-transplantation-with-exocrine-drainage-through-a-duodenoduodenostomy-versus-duodenojejunostomy
#8
J P Lindahl, R Horneland, E Nordheim, A Hartmann, E M Aandahl, K Grzyb, H Haugaa, G Kjøsen, A Åsberg, T Jenssen
Until recently, pancreas transplantation has mostly been performed with exocrine drainage via duodenojejunostomy (DJ). Since 2012, DJ was substituted with duodenoduodenostomy (DD) in our hospital, allowing endoscopic access for biopsies. This study assessed safety profiles with DD versus DJ procedures, and clinical outcomes with the DD technique in pancreas transplantation. DD patients (n=117; 62 simultaneous pancreas and kidney [SPKDD ] and 55 pancreas transplantation alone [PTADD ] with median follow-up 2...
July 11, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28692442/current-issues-in-allogeneic-islet-transplantation
#9
Charles A Chang, Michael C Lawrence, Bashoo Naziruddin
PURPOSE OF REVIEW: Transplantation of allogenic pancreatic islets is a minimally invasive treatment option to control severe hypoglycemia and dependence on exogenous insulin among type 1 diabetes (T1D) patients. This overview summarizes the current issues and progress in islet transplantation outcomes and research. RECENT FINDINGS: Several clinical trials from North America and other countries have documented the safety and efficacy of clinical islet transplantation for T1D patients with impaired hypoglycemia awareness...
July 7, 2017: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/28691373/stromal-vascular-fraction-loaded-silk-fibroin-mats-effectively-support-the-survival-of-diabetic-mice-after-pancreatic-islet-transplantation
#10
Sara Perteghella, Barbara Vigani, Luca Mastracci, Federica Grillo, Barbara Antonioli, Marta Galuzzi, Marta Cecilia Tosca, Barbara Crivelli, Stefania Preda, Giuseppe Tripodo, Mario Marazzi, Theodora Chlapanidas, Maria Luisa Torre
The aim of this study is to assess whether stromal vascular fraction (SVF)-soaked silk fibroin nonwoven mats (silk-SVF) can preserve the functionality of encapsulated pancreatic endocrine cells (alginate-PECs) after transplantation in the subcutaneous tissue of diabetic mice. Silk scaffolds are selected to create an effective 3D microenvironment for SVF delivery in the subcutaneous tissue before diabetes induction: silk-SVF is subcutaneously implanted in the dorsal area of five healthy animals; after 15 d, mice are treated with streptozotocin to induce diabetes and then alginate-PECs are implanted on the silk-SVF...
July 10, 2017: Macromolecular Bioscience
https://www.readbyqxmd.com/read/28688516/pancreas-transplantation-advantages-of-a-retroperitoneal-graft-position
#11
Joana Ferrer, Víctor Molina, Ramón Rull, Miguel Ángel López-Boado, Santiago Sánchez, Rocío García, Ma José Ricart, Pedro Ventura-Aguiar, Ángeles García-Criado, Enric Esmatjes, Josep Fuster, Juan Carlos Garcia-Valdecasas
INTRODUCTION: In the 50 years since the first pancreas transplant performed at the University of Minnesota, the surgical techniques employed have undergone many modifications. Techniques such as retroperitoneal graft placement have further improved the ability to reproduce the physiology of the «native» pancreas. We herein present our experience of a modified technique for pancreatic transplant, with the organ placed into a fully retroperitoneal position with systemic venous and enteric drainage of the graft by duodeno-duodenostomy...
July 5, 2017: Cirugía Española
https://www.readbyqxmd.com/read/28682797/surgery-of-pancreas-transplantation
#12
Mark Reza Laftavi, Angelika Gruessner, Rainer Gruessner
PURPOSE OF REVIEW: The surgical techniques of pancreas transplantation have been evolving and significantly improved over time. This article discusses different current techniques and their modifications. RECENT FINDING: At this time, the most commonly used technique is systemic venous drainage (for venous outflow) and enteric drainage (for management of exocrine pancreatic secretions). However, new modifications of established techniques such as gastric or duodenal exocrine drainage and venous drainage to the inferior vena cava continue to be introduced...
August 2017: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/28682620/a-new-biotechnological-microencapsulating-methodology-utilising-individualized-gradient-screened-jet-laminar-flow-techniques-for-pancreatic-%C3%AE-cell-delivery-bile-acids-support-cell-energy-generating-mechanisms
#13
Armin Mooranian, Rebecca Negrulj, Ryu Takechi, Emma Jamieson, Grant Morahan, Hani Al-Salami
IIntroduction: In previous studies, we developed a new technique (Ionic Gelation Vibrational Jet Flow; IGVJF) in order to encapsulate pancreatic β-cells, for insulin in vivo delivery, and diabetes treatment. The fabricated microcapsules showed good morphology but limited cell functions. Thus, this study aimed to optimise the IGVJF technique, by utilizing integrated electrode tension, coupled with high internal vibration, jet-flow polymer stream rate, ionic bath-gelation concentrations and gelation time stay...
July 6, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28678625/use-of-additives-scaffolds-and-extracellular-matrix-components-for-improvement-of-human-pancreatic-islet-outcomes-in-vitro-a-systematic-review
#14
Natália Emerim Lemos, Letícia de Almeida Brondani, Cristine Dieter, Jaqueline Rheinheimer, Ana Paula Bouças, Cristiane Bauermann Leitão, Daisy Crispim, Andrea Carla Bauer
Pancreatic islet transplantation is an established treatment to restore insulin independence in type 1 diabetic patients. Its success rates have increased lately based on improvements in immunosuppressive therapies and on islet isolation and culture. It is known that the quality and quantity of viable transplanted islets are crucial for the achievement of insulin independence and some studies have shown that a significant number of islets are lost during culture time. Thus, in an effort to improve islet yield during culture period, researchers have tested a variety of additives in culture media as well as alternative culture devices, such as scaffolds...
July 5, 2017: Islets
https://www.readbyqxmd.com/read/28672010/fibroblasts-accelerate-islet-revascularization-and-improve-long-term-graft-survival-in-a-mouse-model-of-subcutaneous-islet-transplantation
#15
Marcos Perez-Basterrechea, Manuel Martinez Esteban, Maria Alvarez-Viejo, Tania Fontanil, Santiago Cal, Marta Sanchez Pitiot, Jesus Otero, Alvaro Jesus Obaya
Pancreatic islet transplantation has been considered for many years a promising therapy for beta-cell replacement in patients with type-1 diabetes despite that long-term clinical results are not as satisfactory. This fact points to the necessity of designing strategies to improve and accelerate islets engraftment, paying special attention to events assuring their revascularization. Fibroblasts constitute a cell population that collaborates on tissue homeostasis, keeping the equilibrium between production and degradation of structural components as well as maintaining the required amount of survival factors...
2017: PloS One
https://www.readbyqxmd.com/read/28668832/imaging-the-role-of-multinucleate-pancreatic-cancer-cells-and-cancer-associated-fibroblasts-in-peritoneal-metastasis-in-mouse-models
#16
Kosuke Hasegawa, Atsushi Suetsugu, Miki Nakamura, Takuro Matsumoto, Hitomi Aoki, Takahiro Kunisada, Masahito Shimizu, Shigetoyo Saji, Hisataka Moriwaki, Robert M Hoffman
BACKGROUND/AIM: The interaction between pancreatic-cancer cells and stromal cells in the tumor microenvironment (TME) is of particular importance in cancer progression and metastasis. The present report demonstrates the role of cancer-associated fibroblasts (CAFs) and multinucleate pancreatic-cancer cells in peritoneal metastasis. MATERIALS AND METHODS: An orthotopic mouse model of pancreatic cancer was established with the human pancreatic cancer cell line BxPC3, which stably expresses green fluorescent protein (GFP)...
July 2017: Anticancer Research
https://www.readbyqxmd.com/read/28665920/lineage-conversion-of-mouse-fibroblasts-to-pancreatic-%C3%AE-cells
#17
Tianjin Liu, Liangliang Sun, Beige Jiang, Limei Li, Jin Cen, Xiaotao Chen, Zhaoyun Zhang, Qinghua Wang, Xin Cheng, Yongquan Shi, Lijian Hui
α-cells, which synthesize glucagon, also support β-cell survival and have the capacity to transdifferentiate into β-cells. However, the role of α-cells in pathological conditions and their putative clinical applications remain elusive due in large part to the lack of mature α-cells. Here, we present a new technique to generate functional α-like cells. α-like cells (iAlpha cells) were generated from mouse fibroblasts by transduction of transcription factors, including Hhex, Foxa3, Gata4, Pdx1 and Pax4, which induce α-cell-specific gene expression and glucagon secretion in response to KCl and Arg stimulation...
June 30, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/28657136/reprogramming-mouse-embryo-fibroblasts-to-functional-islets-without-genetic-manipulation
#18
Bhawna Chandravanshi, Ramesh Bhonde
The constant quest for generation of large number of islets aimed us to explore the differentiation potential of mouse embryo fibroblast cells. Mouse embryo fibroblast cells isolated from 12-14 day old pregnant mice were characterized for their surface markers and tri-lineage differentiation potential. They were subjected to serum free media containing a cocktail of islet differentiating reagents and analysed for the expression of pancreatic lineage transcripts .The islet like cell aggregates (ICAs) was confirmed for their pancreatic properties via immunofluorecence for C-peptide, glucagon and somatostain...
June 28, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28655312/transplantation-of-human-fetal-pancreatic-progenitor-cells-ameliorates-renal-injury-in-streptozotocin-induced-diabetic-nephropathy
#19
Yongwei Jiang, Wenjian Zhang, Shiqing Xu, Hua Lin, Weiguo Sui, Honglin Liu, Liang Peng, Qing Fang, Li Chen, Jinning Lou
BACKGROUND: Diabetic nephropathy (DN) is a severe complication of diabetes mellitus (DM). Pancreas or islet transplantation has been reported to prevent the development of DN lesions and ameliorate or reverse existing glomerular lesions in animal models. Shortage of pancreas donor is a severe problem. Islets derived from stem cells may offer a potential solution to this problem. OBJECTIVE: To evaluate the effect of stem cell-derived islet transplantation on DN in a rat model of streptozotocin-induced DM...
June 27, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28650076/a-systematic-review-of-the-relationship-between-glycemic-control-and-necrobiosis-lipoidica-diabeticorum-in-patients-with-diabetes-mellitus
#20
REVIEW
Bhavik D Mistry, Afsaneh Alavi, Saima Ali, Nisha Mistry
The association of specific skin disorders with diabetes mellitus (DM) has been well established. Current literature suggests that approximately 30-91% of patients with diabetes will experience at least one cutaneous manifestation of this systemic disease in their lifetime. To date, there are limited articles summarizing the link between necrobiosis lipoidica diabeticorum (NLD) prognosis and glycemic control in patients with diabetes. The objective of the study is to summarize and appraise the available evidence assessing the relationship between glycemic control and NLD...
June 26, 2017: International Journal of Dermatology
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