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pancreatic Transplant

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https://www.readbyqxmd.com/read/28333601/simultaneous-occurrence-of-varicella-zoster-virus-induced-pancreatitis-and-hepatitis-in-a-renal-transplant-recipient-a-case-report-and-review-of-literature
#1
Puneet Chhabra, Priyadarshi Ranjan, Deepak K Bhasin
INTRODUCTION: Gastrointestinal complications are common after renal transplantation, including oral lesions, esophagitis, gastritis, diarrhea, and colon carcinoma. The differential diagnosis is difficult in this scenario because multiple factors such as drugs, infections, and preexisting gastrointestinal disease come into play. CASE PRESENTATION: We report a case of varicella zoster virus-induced pancreatitis and hepatitis in a renal transplant recipient. The patient underwent renal transplantation 3 years earlier and now presented with severe pain in the epigastrium radiating to his back and had raised serum lipase levels and skin lesions characteristic of varicella...
2017: Permanente Journal
https://www.readbyqxmd.com/read/28321468/hyperglycaemic-memory-affects-the-neurovascular-unit-of-the-retina-in-a-diabetic-mouse-model
#2
Patrick Friedrichs, Andrea Schlotterer, Carsten Sticht, Matthias Kolibabka, Paulus Wohlfart, Axel Dietrich, Thomas Linn, Grietje Molema, Hans-Peter Hammes
AIMS/HYPOTHESIS: The aim of this study was to evaluate damage to the neurovascular unit in a mouse model of hyperglycaemic memory. METHODS: A streptozotocin-induced mouse model of diabetes (C57BL/6J background) received insulin-releasing pellets and pancreatic islet-cell transplantation. Damage to the neurovascular unit was studied by quantitative retinal morphometry for microvascular changes and microarray analysis, with subsequent functional annotation clustering, for changes of the retinal genome...
March 20, 2017: Diabetologia
https://www.readbyqxmd.com/read/28321218/the-induction-and-maintenance-of-transplant-tolerance-engages-both-regulatory-and-anergic-cd4-t-cells
#3
Alix Besançon, Marije Baas, Tania Goncalves, Fabrice Valette, Herman Waldmann, Lucienne Chatenoud, Sylvaine You
Therapeutic tolerance to self-antigens or foreign antigens is thought to depend on constant vigilance by Foxp3(+) regulatory T cells (Tregs). Previous work using a pancreatic islet allograft model and a short pulse of CD3 antibody therapy has shown that CD8(+) T cells become anergic and use TGFβ and coinhibitory signaling as their contribution to the tolerance process. Here, we examine the role of CD4(+) T cells in tolerization by CD3 antibodies. We show that both Foxp3(+) Tregs and CD4(+) T cell anergy play a role in the induction of tolerance and its maintenance...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28317340/production-of-pancreatic-progenitor-cells-from-human-induced-pluripotent-stem-cells-using-a-three-dimensional-suspension-bioreactor-system
#4
Yuichiro Mihara, Katsuhisa Matsuura, Yoshihiro Sakamoto, Teruo Okano, Norihiro Kokudo, Tatsuya Shimizu
Islet replacement is a promising strategy for the treatment of patients with type 1 diabetes and patients who have undergone total pancreatectomy. Recent progress in cellular reprogramming technology may allow the transplantation of a patient's own pancreatic cells. Although many studies have reported the differentiation of pancreatic progenitor cells from mouse and human pluripotent stem cells (PSCs), obtaining sufficient cell numbers for clinical applications remains problematic. Here, we describe the mass production of human pancreatic progenitor cells from human induced (i)PSCs using a three-dimensional suspension bioreactor system...
March 20, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28294516/peri-transplant-pancreatitis-a-marker-of-high-mortality-and-graft-failure-in-liver-transplant-patients
#5
Tara A Russell, Sarah Park, Vatche G Agopian, Ali Zarrinpar, Douglas G Farmer, Sean O'Neill, Islam Korayem, Samer Ebaid, Jeffrey Gornbein, Ronald W Busuttil, Fady M Kaldas
Perioperative pancreatitis is a significant comorbid condition in surgical patients, however the degree to which pancreatitis affects graft and overall survival in liver transplant recipients has not been evaluated. This study assesses the impact of pancreatitis on graft and patient survival in adult orthotopic liver transplantation (OLT). All patients undergoing OLT at a single academic institution from 2007-2015 were reviewed. Pancreatitis was classified by method of diagnosis (intra-operative or radiographic (IO/R) versus isolated serologic (IS)) and timing (pre-operative versus post-operative)...
March 14, 2017: Liver Transplantation
https://www.readbyqxmd.com/read/28286566/gastrointestinal-manifestations-of-mitochondrial-disorders-a-systematic-review
#6
REVIEW
Josef Finsterer, Marlies Frank
Mitochondrial disorders (MIDs) due to respiratory-chain defects or nonrespiratory chain defects are usually multisystem conditions [mitochondrial multiorgan disorder syndrome (MIMODS)] affecting the central nervous system (CNS), peripheral nervous system, eyes, ears, endocrine organs, heart, kidneys, bone marrow, lungs, arteries, and also the intestinal tract. Frequent gastrointestinal (GI) manifestations of MIDs include poor appetite, gastroesophageal sphincter dysfunction, constipation, dysphagia, vomiting, gastroparesis, GI pseudo-obstruction, diarrhea, or pancreatitis and hepatopathy...
January 2017: Therapeutic Advances in Gastroenterology
https://www.readbyqxmd.com/read/28285194/islet-encapsulation-with-polyphenol-coatings-decreases-pro-inflammatory-chemokine-synthesis-and-t-cell-trafficking
#7
Dana Pham-Hua, Lindsey E Padgett, Bing Xue, Brian Anderson, Michael Zeiger, Jessie M Barra, Maigen Bethea, Chad S Hunter, Veronika Kozlovskaya, Eugenia Kharlampieva, Hubert M Tse
Type 1 Diabetes (T1D) is a chronic pro-inflammatory autoimmune disease consisting of islet-infiltrating leukocytes involved in pancreatic β-cell lysis. One promising treatment for T1D is islet transplantation; however, clinical application is constrained due to limited islet availability, adverse effects of immunosuppressants, and declining graft survival. Islet encapsulation may provide an immunoprotective barrier to preserve islet function and prevent immune-mediated rejection after transplantation. We previously demonstrated that a novel cytoprotective nanothin multilayer coating for islet encapsulation consisting of tannic acid (TA), an immunomodulatory antioxidant, and poly(N-vinylpyrrolidone) (PVPON), was efficacious in dampening in vitro immune responses involved in transplant rejection and preserving in vitro islet function...
March 6, 2017: Biomaterials
https://www.readbyqxmd.com/read/28281726/anastomotic-loop-between-common-hepatic-artery-and-gastroduodenal-artery-in-coexistence-with-an-aberrant-right-hepatic-artery
#8
Konstantinos Natsis, Maria Piagkou, Theodosis Stamatopoulos, Ioannis Spyridakis, Stylianos Apostolidis
Anatomical variations of the hepatic arteries are not uncommon. The anomalous hepatic arterial supply is of paramount importance in hepatobiliary, pancreatic or liver transplantation and in laparoscopic surgery. We describe an unusual case of a 66-year-old Greek male cadaver, where a rare anastomosis (in the form of an enlarged arterial loop, 4.84 mm in diameter) between the common hepatic artery (6.42 mm) and the gastroduodenal artery (GDA) (4.82 mm) coexisted with an aberrant right hepatic artery (ARHA) (6...
March 10, 2017: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/28272465/reconstituting-development-of-pancreatic-intraepithelial-neoplasia-from-primary-human-pancreas-duct-cells
#9
Jonghyeob Lee, Emily R Snyder, Yinghua Liu, Xueying Gu, Jing Wang, Brittany M Flowers, Yoo Jung Kim, Sangbin Park, Gregory L Szot, Ralph H Hruban, Teri A Longacre, Seung K Kim
Development of systems that reconstitute hallmark features of human pancreatic intraepithelial neoplasia (PanINs), the precursor to pancreatic ductal adenocarcinoma, could generate new strategies for early diagnosis and intervention. However, human cell-based PanIN models with defined mutations are unavailable. Here, we report that genetic modification of primary human pancreatic cells leads to development of lesions resembling native human PanINs. Primary human pancreas duct cells harbouring oncogenic KRAS and induced mutations in CDKN2A, SMAD4 and TP53 expand in vitro as epithelial spheres...
March 8, 2017: Nature Communications
https://www.readbyqxmd.com/read/28267898/laparoscopic-biopsies-in-pancreas-transplantation
#10
P D Uva, J S Odorico, A Giunippero, I C Cabrera, A Gallo, L R Leon, E Minue, F Toniolo, I Gonzalez, E Chuluyan, D H Casadei
As there is no precise laboratory test or imaging study for detection of pancreas allograft rejection, there is increasing interest in obtaining pancreas tissue for diagnosis. Pancreas allograft biopsies are most commonly performed percutaneously, transcystoscopically, or endoscopically, yet pancreas transplant surgeons often lack the skills to perform these types of biopsies. We have performed 160 laparoscopic pancreas biopsies in 95 patients. There were 146 simultaneous kidney-pancreas biopsies and 14 pancreas only biopsies due to pancreas alone, kidney loss or extraperitoneal kidney...
March 7, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28267234/a-clinical-tool-to-calculate-post-transplant-survival-using-pre-transplant-clinical-characteristics-in-adults-with-cystic-fibrosis
#11
Anne L Stephenson, Jenna Sykes, Yves Berthiaume, Lianne G Singer, Cecilia Chaparro, Shawn D Aaron, George Alex Whitmore, Sanja Stanojevic
BACKGROUND: We previously identified factors associated with a greater risk of death post-transplant. The purpose of this study was to develop a clinical tool to estimate the risk of death after transplant based on pre-transplant variables. METHODS: We utilized the Canadian CF registry to develop a nomogram that incorporates pre-transplant clinical measures to assess post-lung transplant survival. The 1-, 3-, and 5-year survival estimates were calculated using Cox proportional hazards models...
March 7, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28266044/role-and-impact-of-the-extracellular-matrix-on-integrin-mediated-pancreatic-%C3%AE-cell-functions
#12
REVIEW
Caroline Arous, Bernhard Wehrle-Haller
Understanding the organization and role of the extracellular matrix in islets of Langerhans is critical for maintaining pancreatic β-cells, and to recognize and revert the physiopathology of diabetes. Indeed, integrin-mediated adhesion signaling in response to the pancreatic extracellular matrix plays crucial roles in β-cell survival and insulin secretion, two major functions, which are affected in diabetes. Here, we would like to present an update on the major components of the pancreatic extracellular matrix, their role during integrin-mediated cell-matrix adhesions and how they are affected during diabetes...
March 7, 2017: Biology of the Cell
https://www.readbyqxmd.com/read/28263222/mtor-and-cardiovascular-diseases-diabetes-mellitus
#13
Bruno Vergès
The mammalian targets of rapamycin (mTOR) inhibitors are potent immunosuppressors used for prevention of acute rejection following transplantation and have been more recently used as anticancer drugs. mTOR inhibitors have a significant impact on glucose metabolism and induce frequently diabetes. mTOR inhibitors, when used as immunosuppressive agents (sirolimus, everolimus), can induce diabetes with an incidence which is low when used without calcineurin inhibitors (CNI) but high when used in combination with CNI (from 11...
March 4, 2017: Transplantation
https://www.readbyqxmd.com/read/28260466/leptin-levels-in-patients-with-type-1-diabetes-mellitus-after-fetal-pancreatic-stem-cell-transplant
#14
Olga Ulyanova, Abay Baigenzhin, Zhannat Taubaldieva, Saltanat Tuganbekova, Larissa Kozina, Samat Saparbayev
OBJECTIVES: Our objective was to determine leptin levels in patients with type 1 diabetes mellitus after fetal pancreatic stem cell transplant. MATERIALS AND METHODS: Seven patients, aged 20 to 42 years, with type 1 diabetes mellitus received a fetal pancreatic stem cell transplant by intravenous infusion. The quantity of fetal stem cells infused was ≥ 5 × 10⁶, and the cells were of 12 to 14 weeks of gestation. We analyzed the levels of leptin, C-peptide, and antibodies to the islets of Langerhans before and 3 months after the transplant procedure...
February 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28258614/safety-related-outcomes-of-the-japanese-society-of-hepato-biliary-pancreatic-surgery-board-certification-system-for-expert-surgeons
#15
Takehito Otsubo, Shinjiro Kobayashi, Keiji Sano, Takayuki Misawa, Takehiro Ota, Satoshi Katagiri, Katsuhiko Yanaga, Hiroki Yamaue, Norihiro Kokudo, Michiaki Unno, Jiro Fujimoto, Fumihiko Miura, Masaru Miyazaki, Masakazu Yamamoto
PURPOSE: We investigated safety-related outcomes of HBP surgeries performed after establishment of the Japanese Society of Hepato-Biliary-Pancreatic Surgery board certification system for expert surgeons. METHODS: We analyzed post-HBP surgery mortality data obtained from annual safety reports provided by board-certified training institutions between 2012 and 2015. RESULTS: The 90-day mortality rate for the 53,929 high-level HBP surgeries performed at board-certified training institutions was 1...
March 3, 2017: Journal of Hepato-biliary-pancreatic Sciences
https://www.readbyqxmd.com/read/28258588/gastrostomy-tube-placement-for-long-term-oral-drug-administration-in-non-human-primates
#16
Jong-Min Kim, Jun-Seop Shin, Byoung-Hoon Min, Jung-Sik Kim, Il-Hee Yoon, Won-Young Jeong, Ga-Eul Lee, Min-Sun Kim, Ju-Eun Kim, Chung-Gyu Park
BACKGROUND: Non-human primates (NHPs) are often used as recipients in preclinical transplantation research that in most cases involves administration of various drugs including immunosuppressants. Long-term oral drug administration, particularly tacrolimus, is challenging in the transplant recipient NHPs. Oral drug administration method using the mixture of drug and fruit juice has been used in NHPs, but this is not always effective in all monkeys. To those monkeys who are poorly compliant, oral drug administration in restraint or administration using gastrostomy tube should be necessary...
March 3, 2017: Xenotransplantation
https://www.readbyqxmd.com/read/28255157/role-of-high-mobility-group-box-1-hmgb1-in-transplantation-of-rat-pancreatic-islets
#17
Seonghee Jeong, Song Lee, Chan Mee-Lee, In Kyong Shim, Song-Cheol Kim
BACKGROUND The potential role of tissue damage factor high-mobility group box 1 (HMGB1) in islet cell transplantation is poorly understood. We investigated the role of HMGB1 in pancreatic islet cell isolation and culture in vitro and after pancreatic islet cell transplantation into diabetic nude mice in vivo. MATERIAL AND METHODS To generate damaged islets, isolated islets were treated with 1 mg/mL lipopolysaccharide (LPS). Some islets were pretreated with a neutralizing anti-HMGB1 antibody before LPS treatment to investigate the effect of HMGB1 on isolated islets damaged by LPS...
March 3, 2017: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/28253305/chitosan-assisted-differentiation-of-porcine-adipose-tissue-derived-stem-cells-into-glucose-responsive-insulin-secreting-clusters
#18
Hui-Yu Liu, Chih-Chien Chen, Yuan-Yu Lin, Yu-Jen Chen, Bing-Hsien Liu, Shiu-Chung Wong, Cheng-Yu Wu, Yun-Tsui Chang, Han-Yi E Chou, Shih-Torng Ding
The unique advantage of easy access and abundance make the adipose-derived stem cells (ADSCs) a promising system of multipotent cells for transplantation and regenerative medicine. Among the available sources, porcine ADSCs (pADSCs) deserve especial attention due to the close resemblance of human and porcine physiology, as well as for the upcoming availability of humanized porcine models. Here, we report on the isolation and conversion of pADSCs into glucose-responsive insulin-secreting cells. We used the stromal-vascular fraction of the dorsal subcutaneous adipose from 9-day-old male piglets to isolate pADSCs, and subjected the cells to an induction scheme for differentiation on chitosan-coated plates...
2017: PloS One
https://www.readbyqxmd.com/read/28252345/evidence-of-stress-in-%C3%AE-cells-obtained-with-laser-capture-microdissection-from-pancreases-of-brain-dead-donors
#19
Aref Ebrahimi, Min-Ho Jung, Jonathan M Dreyfuss, Hui Pan, Dennis Sgroi, Susan Bonner-Weir, Gordon C Weir
Isolated islets used for transplantation are known to be stressed, which can result from the circumstances of death, in particular brain death, the preservation of the pancreas with its warm and cold ischemia, from the trauma of the isolation process, and the complex events that occur during tissue culture. The current study focused upon the events that occur before the islet isolation procedure. Pancreases were obtained from brain dead donors (n = 7) with mean age 50 (11) and normal pancreatic tissue obtained at surgery done for pancreatic neoplasms (n = 7), mean age 69 (9)...
March 4, 2017: Islets
https://www.readbyqxmd.com/read/28248835/specific-etiologies-associated-with-the-multiple-organ-dysfunction-syndrome-in-children-part-2
#20
Jeffrey S Upperman, John C Bucuvalas, Felicia N Williams, Bruce A Cairns, Charles S Cox, Allan Doctor, Robert F Tamburro
OBJECTIVE: To describe a number of conditions and therapies associated with multiple organ dysfunction syndrome presented as part of the Eunice Kennedy Shriver National Institute of Child Health and Human Development Multiple Organ Dysfunction Workshop (March 26-27, 2015). In addition, the relationship between burn injuries and multiple organ dysfunction syndrome is also included although it was not discussed at the workshop. DATA SOURCES: Literature review, research data, and expert opinion...
March 2017: Pediatric Critical Care Medicine
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