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pancreatic Transplant

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https://www.readbyqxmd.com/read/29159905/autologous-mesenchymal-stem-cell-and-islet-cotransplantation-safety-and-efficacy
#1
Hongjun Wang, Charlie Strange, Paul J Nietert, Jingjing Wang, Taylor L Turnbull, Colleen Cloud, Stefanie Owczarski, Betsy Shuford, Tara Duke, Gary Gilkeson, Louis Luttrell, Kathie Hermayer, Jyotika Fernandes, David B Adams, Katherine A Morgan
Islet engraftment after transplantation is impaired by high rates of islet/β cell death caused by cellular stressors and poor graft vascularization. We studied whether cotransplantation of ex vivo expanded autologous bone marrow-derived mesenchymal stem cells (MSCs) with islets is safe and beneficial in chronic pancreatitis patients undergoing total pancreatectomy with islet autotransplantation. MSCs were harvested from the bone marrow of three islet autotransplantation patients and expanded at our current Good Manufacturing Practices (cGMP) facility...
November 21, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/29158477/sirolimus-induces-depletion-of-intracellular-calcium-stores-and-mitochondrial-dysfunction-in-pancreatic-beta-cells
#2
Angela Lombardi, Jessica Gambardella, Xue-Liang Du, Daniela Sorriento, Maurizio Mauro, Guido Iaccarino, Bruno Trimarco, Gaetano Santulli
Sirolimus (rapamycin) is an immunosuppressive drug used in transplantation. One of its major side effects is the increased risk of diabetes mellitus; however, the exact mechanisms underlying such association have not been elucidated. Here we show that sirolimus impairs glucose-stimulated insulin secretion both in human and murine pancreatic islets and in clonal β cells in a dose- and time-dependent manner. Importantly, we demonstrate that sirolimus markedly depletes calcium (Ca(2+)) content in the endoplasmic reticulum and significantly decreases glucose-stimulated mitochondrial Ca(2+) uptake...
November 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29157981/foxo1-inhibition-promotes-differentiation-of-human-embryonic-stem-cells-into-insulin-producing-cells
#3
Fei Yu, Rui Wei, Jin Yang, Junling Liu, Kun Yang, Haining Wang, Yiming Mu, Tianpei Hong
Insulin-producing cells (IPCs) derived from human embryonic stem cells (hESCs) hold great potential for cell transplantation therapy in diabetes. Tremendous progress has been made in inducing differentiation of hESCs into IPCs in vitro, of which definitive endoderm (DE) protocol mimicking foetal pancreatic development has been widely used. However, immaturity of the obtained IPCs limits their further applications in treating diabetes. Forkhead box O1 (FoxO1) is involved in the differentiation and functional maintenance of murine pancreatic β cells, but its role in human β cell differentiation is under elucidation...
November 17, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/29156810/psc-derived-galectin-1-inducing-epithelial-mesenchymal-transition-of-pancreatic-ductal-adenocarcinoma-cells-by-activating-the-nf-%C3%AE%C2%BAb-pathway
#4
Dong Tang, Jingqiu Zhang, Zhongxu Yuan, Hongpeng Zhang, Yang Chong, Yuqin Huang, Jie Wang, Qingquan Xiong, Sen Wang, Qi Wu, Ying Tian, Yongdie Lu, Xiao Ge, Wenjing Shen, Daorong Wang
Galectin-1 has previously been shown to be strongly expressed in activated pancreatic stellate cells (PSCs) and promote the development and metastasis of pancreatic ductal adenocarcinoma (PDAC). However, the molecular mechanisms by which Galectin-1 promotes the malignant behavior of pancreatic cancer cells remain unclear. In this study, we examined the effects of Galectin-1 knockdown or overexpression in PSCs co-cultured with pancreatic cancer (PANC-1) cells. Immunohistochemical analysis showed expression of epithelial-mesenchymal transition (EMT) markers and MMP9 were positively associated with the expression of Galectin-1 in 66 human PDAC tissues...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29151502/isolated-pancreatic-myeloid-sarcoma-associated-with-t-8-21-runx1-runx1t1-rearrangement
#5
Kenji Tokunaga, Ayako Yamamura, Shikiko Ueno, Yoshitaka Kikukawa, Shunichiro Yamaguchi, Michihiro Hidaka, Naofumi Matsuno, Tatsuya Kawaguchi, Masao Matsuoka, Yutaka Okuno
No valid treatment for isolated myeloid sarcoma (IMS) has yet been established, and no thorough genetic examinations have been performed because of its low incidence and unique manner of development. We herein report a 34-year-old man with pancreatic IMS with t(8;21)/RUNX1-RUNX1T1 rearrangement. He was treated with high-dose cytarabine followed by allogeneic hematopoietic stem cell transplantation (allo-HSCT). This is the first report of pancreatic IMS with t(8;21). Positron emission tomography/computed tomography and genetic study are useful for the diagnosis, and allo-HSCT achieved complete remission in this patient...
November 20, 2017: Internal Medicine
https://www.readbyqxmd.com/read/29149952/financial-impact-of-incidental-radiologic-findings-during-living-kidney-donor-evaluation
#6
A Mutneja, L Saling, M Yano, A Vijayan
Living kidney donor (LKD) transplantation is an important alternative for the end-stage renal disease population and is preferred due to superior outcomes when compared with dialysis or deceased donor transplantation. LKD evaluation includes a computed tomography angiogram (CTA) for assessment of renal and renovascular anatomy. Incidental nonrenal findings are frequently noted during the CTAs, and these may have variable clinical significance. These incidental findings lead to further testing, procedures, and referrals, which incur additional cost...
November 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/29143337/intraductal-papillary-mucinous-neoplasm-of-the-pancreas-rapidly-xenografts-in-chicken-eggs-and-predicts-aggressiveness
#7
Zhefu Zhao, Nathalie Bauer, Ewa Aleksandrowicz, Libo Yin, Jury Gladkich, Wolfgang Gross, Jörg Kaiser, Thilo Hackert, Oliver Strobel, Ingrid Herr
Intraductal papillary mucinous neoplasm (IPMN) of the pancreas has a high risk of progressing to invasive pancreatic ductal adenocarcinoma (PDA), but experimental models for IPMN are largely missing. New experimental systems for the molecular characterization of IPMN and for personalized prognosis and treatment options for IPMN are urgently needed. We analyzed the potential use of fertilized chicken eggs for the culture of freshly resected IPMN tissue. We transplanted 49 freshly resected IPMN tissues into eggs and compared the growth characteristics to IPMN tissues transplanted into mice; this was followed by an analysis of histology, morphology and marker expression...
November 16, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29141929/septic-arthritis-of-knee-joint-due-to-parvimonas-micra
#8
Moni Roy, Ashish Kumar Roy, Sharjeel Ahmad
Parvimonas species are anaerobic, Gram-positive cocci that are a constituent of normal oral and gastrointestinal flora. We present a case of right knee joint septic arthritis due to Parvimonas micra in an immunocompromised patient. A 61-year-old male renal and pancreatic transplant recipient on immunosuppressive therapy was admitted to our hospital due to intense pain, joint swelling and inability to move his right knee over the past 9 months. After synovial fluid was drawn, cultures were positive for P. micra, an anaerobic pathogen that is part of the flora of the oral cavity...
November 14, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29138633/influence-of-spk-with-enteric-drainage-on-the-pancreatic-exocrine-function-in-diabetic-patients-with-uremia
#9
Guanghui Pei, Wu Lv, Xiaohang Li, Guoqing Zhang, Jialin Zhang
Objective: This study aimed to determine the use of fecal elastase in evaluating the effect of simultaneous pancreas-kidney transplantation with enteric drainage on the pancreatic exocrine function of diabetic patients with uremia. Methods: A total of 19 patients with simultaneous pancreas-kidney transplantation (SPK) with enteric drainage, 31 diabetic patients with uremia (chronic renal failure (CRF)), 22 diabetic patients with uremia who underwent renal transplantation (RT), and 20 normal individuals (CON) were included in the study...
2017: International Journal of Endocrinology
https://www.readbyqxmd.com/read/29128846/tissue-adhesive-fk506-loaded-polymeric-nanoparticles-for-multi-layered-nano-shielding-of-pancreatic-islets-to-enhance-xenograft-survival-in-a-diabetic-mouse-model
#10
Tung Thanh Pham, Tiep Tien Nguyen, Shiva Pathak, Shobha Regmi, Hanh Thuy Nguyen, Tuan Hiep Tran, Chul Soon Yong, Jong Oh Kim, Pil-Hoon Park, Min Hui Park, Young Kyung Bae, Jeong Uk Choi, Youngro Byun, Cheol-Hee Ahn, Simmyung Yook, Jee-Heon Jeong
This study aims to develop a novel surface modification technology to prolong the survival time of pancreatic islets in a xenogenic transplantation model, using 3,4-dihydroxyphenethylamine (DOPA) conjugated poly(lactide-co-glycolide)-poly(ethylene glycol) (PLGA-PEG) nanoparticles (DOPA-NPs) carrying immunosuppressant FK506 (FK506/DOPA-NPs). The functionalized DOPA-NPs formed a versatile coating layer for antigen camouflage without interfering the viability and functionality of islets. The coating layer effectively preserved the morphology and viability of islets in a co-culture condition with xenogenic lymphocytes for 7 days...
November 1, 2017: Biomaterials
https://www.readbyqxmd.com/read/29123178/a-nanobody-based-tracer-targeting-dpp6-for-non-invasive-imaging-of-human-pancreatic-endocrine-cells
#11
Alexander Balhuizen, Sam Massa, Iris Mathijs, Jean-Valery Turatsinze, Jens De Vos, Stéphane Demine, Catarina Xavier, Olatz Villate, Isabelle Millard, Dominique Egrise, Carmen Capito, Raphaël Scharfmann, Pieter In't Veld, Piero Marchetti, Serge Muyldermans, Serge Goldman, Tony Lahoutte, Luc Bouwens, Decio L Eizirik, Nick Devoogdt
There are presently no reliable ways to quantify endocrine cell mass (ECM) in vivo, which prevents an accurate understanding of the progressive beta cell loss in diabetes or following islet transplantation. To address this unmet need, we coupled RNA sequencing of human pancreatic islets to a systems biology approach to identify new biomarkers of the endocrine pancreas. Dipeptidyl-Peptidase 6 (DPP6) was identified as a target whose mRNA expression is at least 25-fold higher in human pancreatic islets as compared to surrounding tissues and is not changed by proinflammatory cytokines...
November 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29110621/functional-germ-cells-from-non-testicular-adult-stem-cells-a-dream-or-reality
#12
Mohammad Ghasemzadeh-Hasankolaei, Mohammadreza Baghaban Eslaminejad, Maryam Ghasemzadeh-Hasankolaei
BACKGROUND: Some research studies provided evidence for the differentiation capacity of adult stem cells (ASCs) into germ cells (GCs). Since the generation of GCs from stem cells (SCs) has been proposed as a potential way for treatment of infertility, many research groups, have begun their creative studies on generation of new GCs both in vitro and in vivo, and utilized different ASC types such as bone marrow mesenchymal stem cells (BM-MSCs), skin stem cells, pancreatic stem cells, and adipose tissue MSCs...
November 6, 2017: Current Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29108345/mri-based-evaluation-of-multiorgan-iron-overload-is-a-predictor-of-adverse-outcomes-in-pediatric-patients-undergoing-allogeneic-hematopoietic-stem-cell-transplantation
#13
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...
October 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/29106286/duodenal-lengthening-in-an-adult-with-ultra-short-bowel-syndrome-a-case-report
#14
Javier Bueno, Rosa Burgos, Susana Redecillas, Manuel López, Joaquin Balsells
BACKGROUND: We have recently demonstrated the feasibility of lengthening the duodenum in children with short bowel syndrome and a dilated duodenum. This procedure gains additional intestinal length in a challenging area of autologous gut reconstruction. Herein, we report the successful application of this technique in an adult with ultra-short bowel syndrome. METHODS: A 25-year-old man with a history of mid-gut volvulus was referred to our center for intestinal transplant evaluation...
November 6, 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/29089105/simultaneous-pancreas-kidney-transplantation-experience-of-the-doce-de-octubre-hospital
#15
Carlos Jiménez-Romero, Alberto Marcacuzco Quinto, Alejandro Manrique Municio, Iago Justo Alonso, Jorge Calvo Pulido, Félix Cambra Molero, Óscar Caso Maestro, Álvaro García-Sesma, Enrique Moreno González
INTRODUCTION: Simultaneous pancreas-kidney transplantation (SPKT) constitutes the therapy of choice for diabetes type1 or type2 associated with end-stage renal disease, because is the only proven method to restore normo-glicemic control in the diabetic patient. METHODS: Retrospective and descriptive study of a series of 175 patients who underwent SPKT from March 1995 to April 2016. We analyze donor and recipient characteristics, perioperative variables and immunosuppression, post-transplant morbi-mortality, patient and graft survival, and risk factors related with patient and graft survival...
October 28, 2017: Cirugía Española
https://www.readbyqxmd.com/read/29078330/favorable-outcome-of-experimental-islet-xenotransplantation-without-immunosuppression-in-a-nonhuman-primate-model-of-diabetes
#16
Barbara Ludwig, Stefan Ludwig, Anja Steffen, Yvonne Knauf, Baruch Zimerman, Sophie Heinke, Susann Lehmann, Undine Schubert, Janine Schmid, Martina Bleyer, Uwe Schönmann, Clark K Colton, Ezio Bonifacio, Michele Solimena, Andreas Reichel, Andrew V Schally, Avi Rotem, Uriel Barkai, Helena Grinberg-Rashi, Franz-Josef Kaup, Yuval Avni, Peter Jones, Stefan R Bornstein
Transplantation of pancreatic islets for treating type 1 diabetes is restricted to patients with critical metabolic lability resulting from the need for immunosuppression and the shortage of donor organs. To overcome these barriers, we developed a strategy to macroencapsulate islets from different sources that allow their survival and function without immunosuppression. Here we report successful and safe transplantation of porcine islets with a bioartificial pancreas device in diabetic primates without any immune suppression...
October 31, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29073244/resveratrol-controlled-the-fate-of-porcine-pancreatic-stem-cells-through-the-wnt-%C3%AE-catenin-signaling-pathway-mediated-by-sirt1
#17
Shuanshuan Xu, Fen Sun, Lipeng Ren, Hong Yang, Na Tian, Sha Peng
Porcine pancreatic stem cells (PSCs) are considered promising transplant materials that may be used to treat diabetes, but some problems, such as insufficient cell number and low differentiation efficiency, should be solved before its clinical application. Resveratrol is a natural polyphenolic compound that can alleviate the complications of diabetes. In this study, we aimed to explore the specific effect of resveratrol on porcine PSCs. We treated porcine PSCs with 10 μM, 25 μM resveratrol to explore the effect of resveratrol on porcine PSCs...
2017: PloS One
https://www.readbyqxmd.com/read/29073149/intrapancreatic-injection-of-human-bone-marrow-derived-mesenchymal-stem-stromal-cells-alleviates-hyperglycemia-and-modulates-the-macrophage-state-in-streptozotocin-induced-type-1-diabetic-mice
#18
Norimitsu Murai, Hirokazu Ohtaki, Jun Watanabe, Zhifang Xu, Shun Sasaki, Kazumichi Yagura, Seiji Shioda, Shoichiro Nagasaka, Kazuho Honda, Masahiko Izumizaki
Type 1 diabetes mellitus is a progressive disease caused by the destruction of pancreatic β-cells, resulting in insulin dependency and hyperglycemia. While transplanted bone marrow-derived mesenchymal stem/stromal cells (BMMSCs) have been explored as an alternative therapeutic approach for diseases, the choice of delivery route may be a critical factor determining their sustainability. This study evaluated the effects of intrapancreatic and intravenous injection of human BMMSCs (hBMMSCs) in streptozotocin (STZ)-induced type 1 diabetic mouse model...
2017: PloS One
https://www.readbyqxmd.com/read/29069604/duct-and-acinar-derived-pancreatic-ductal-adenocarcinomas-show-distinct-tumor-progression-and-marker-expression
#19
Rute M M Ferreira, Rocio Sancho, Hendrik A Messal, Emma Nye, Bradley Spencer-Dene, Richard K Stone, Gordon Stamp, Ian Rosewell, Alberto Quaglia, Axel Behrens
The cell of origin of pancreatic ductal adenocarcinoma (PDAC) has been controversial. Here, we show that identical oncogenic drivers trigger PDAC originating from both ductal and acinar cells with similar histology but with distinct pathophysiology and marker expression dependent on cell of origin. Whereas acinar-derived tumors exhibited low AGR2 expression and were preceded by pancreatic intraepithelial neoplasias (PanINs), duct-derived tumors displayed high AGR2 and developed independently of a PanIN stage via non-mucinous lesions...
October 24, 2017: Cell Reports
https://www.readbyqxmd.com/read/29067525/hypernatremia-and-acute-pancreatitis-in-chronic-kidney-disease-back-to-the-salt-mines-questions
#20
Marie de Tersant, Thérésa Kwon, Marie-Alice Macher, Anne Maisin, Georges Deschênes, Olivier Niel
BACKGROUND: Acute pancreatitis can be a life-threatening complication in patients with chronic kidney disease (CKD), especially in kidney transplant recipients. CASE DIAGNOSIS/TREATMENT: The patient was 7 years old when he received renal transplantation for CKD secondary to posterior urethral valves. Two years later, he presented with severe necrotizing pancreatitis (Ranson's score 5, Balthazar's score 8). Viral and genetic testing came back negative; pancreatitis was attributed to the patient's treatments (prednisone, trimethoprim-sulfamethoxazole, and everolimus)...
October 24, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
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