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https://www.readbyqxmd.com/read/29782661/comparable-outcomes-in-intestinal-retransplantation-single-center-cohort-study
#1
Burcin Ekser, Chandrashekhar A Kubal, Jonathan A Fridell, Richard S Mangus
BACKGROUND: Graft loss in intestinal transplantation (ITx) is close to 25% in the first year and 50% at 5-year post-transplantation. Although technically and immunologically challenging, intestinal retransplantation is now the 4th most common indication for ITx. METHODS: The aim of this study is to review and compare the outcomes of intestinal retransplantation with primary ITx, which included isolated ITx, modified multivisceral transplantation (mMVTx), and full MVTx, between 2003-2014 at Indiana University...
May 21, 2018: Clinical Transplantation
https://www.readbyqxmd.com/read/29782007/intraportal-transplantation-of-pancreatic-islets-in-mouse-model
#2
Rahul Khatri, Birte Hussmann, Divya Rawat, Ali Osman Gürol, Thomas Linn
Pancreatic islet transplantation to reduce hyperglycemia is highly successful in rodents with chemically-induced diabetes. The most common transplantation site in experimental islet transplantation is the kidney capsule. However, as less is known about the interaction of pancreatic islets with blood constituents, it also makes sense to utilize the portal vein approach in experimental islet transplantation. This protocol demonstrates an intraportal islet transplantation technique in NMRI nude mice. Streptozotocin (180 mg/kg) is injected intraperitoneally to induce hyperglycemia in recipient mice...
May 5, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29779317/-the-expression-of-klk7-in-pancreatic-cancer-and-the-effects-on-the-biological-behavior-of-pancreatic-cancer-cells
#3
S L Zheng, M Y Feng, G Yang, G B Xiong, L F Zheng, T P Zhang, Y P Zhao
Objective: To investigate the expression of KLK7 in pancreatic cancer and its clinical significance. Methods: Immunohistochemistry was used to detect the expression of KLK7 protein in pancreatic cancer tissue microarray with 92 samples. Statistical analysis of the relationship between KLK7 and clinicopathological characteristics was finished. Pancreatic cancer cell lines were infected with lentiviuses in order to get cells with KLK7 stable overexpression.KLK7-siRNA was transfected into pancreatic cancer cells to knock down KLK7...
May 1, 2018: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/29779310/-clinical-features-diagnosis-and-treatment-of-intraductal-papillary-neoplasm-of-the-bile-duct
#4
J Y Lou, W Su, S M Wei, F B Huang, W Chen, J Wang, X Z Yu, X L Bai, T B Liang
Objective: To study the clinicopathologic features of intraductal papillary neoplasm of the bile duct(IPNB) and to analyze the diagnostic and therapeutic patterns. Methods: The data of 46 patients with IPNB undergoing surgery in Department of Hepatobiliary and Pancreatic Surgery, the Second Affiliated Hospital of Zhejiang University School of Medicine from January 2013 to November 2017 were retrospectively analyzed.There were 23 males and 23 females with age of (64±8)years.Patients were followed up by clinics and telephone inquiry...
May 1, 2018: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/29779190/therapeutic-strategies-for-modulating-the-extracellular-matrix-to-improve-pancreatic-islet-function-and-survival-after-transplantation
#5
REVIEW
Alexandra M Smink, Paul de Vos
PURPOSES OF REVIEW: Extracellular matrix (ECM) components modulate the interaction between pancreatic islet cells. During the islet isolation prior to transplantation as treatment for type 1 diabetes, the ECM is disrupted impacting functional graft survival. Recently, strategies for restoring ECM have shown to improve transplantation outcomes. This review discusses the current therapeutic strategies to modulate ECM components to improve islet engraftment. RECENT FINDINGS: Approaches applied are seeding islets in ECM of decellularized organs, supplementation of specific ECM components in polymeric scaffolds or immunoisolating capsules, and stimulating islet ECM production with specific growth factors or ECM-producing cells...
May 19, 2018: Current Diabetes Reports
https://www.readbyqxmd.com/read/29778021/the-homing-of-human-umbilical-cord-derived-mesenchymal-stem-cells-and-the-subsequent-modulation-of-macrophage-polarization-in-type-2-diabetic-mice
#6
Yaqi Yin, Haojie Hao, Yu Cheng, Jieqing Gao, Jiejie Liu, Zongyan Xie, Qi Zhang, Li Zang, Weidong Han, Yiming Mu
Umbilical cord-derived mesenchymal stem cells (UC-MSCs), with both immunomodulatory and pro-regenerative properties, are promising for the treatment of type 2 diabetes mellitus (T2DM). As efficient cell therapy largely relies on appropriate homing to target tissues, knowing where and to what extent injected UC-MSCs have homed is critically important. However, bio-distribution data for UC-MSCs in T2DM subjects are extremely limited. Beneficial effects of UC-MSCs on T2DM subjects are associated with increased M2 macrophages, but no systemic evaluation of M2 macrophages has been performed in T2DM individuals...
May 15, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29777904/axed-muc4-muc4-x-aggravates-pancreatic-malignant-phenotype-by-activating-integrin-%C3%AE-1-fak-erk-pathway
#7
Rahat Jahan, Muzafar A Macha, Satyanarayana Rachaghani, Srustidhar Das, Lynette M Smith, Sukhwinder Kaur, Surinder K Batra
Alternative splicing is evolving as an eminent player of oncogenic signaling for tumor development and progression. Mucin 4 (MUC4), a type I membrane-bound mucin, is differentially expressed in pancreatic cancer (PC) and plays a critical role in its progression and metastasis. However, the molecular implications of MUC4 splice variants during disease pathogenesis remain obscure. The present study delineates the pathological and molecular significance of a unique splice variant of MUC4, MUC4/X, which lacks the largest and polymorphic exon 2, along with exon 3...
May 16, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29770308/allo-and-auto-percutaneous-intra-portal-pancreatic-islet-transplantation-pipit-for-diabetes-cure-and-prevention-the-role-of-imaging-and-interventional-radiology
#8
REVIEW
Massimo Venturini, Claudio Sallemi, Paolo Marra, Anna Palmisano, Giulia Agostini, Carolina Lanza, Gianpaolo Balzano, Massimo Falconi, Antonio Secchi, Paolo Fiorina, Lorenzo Piemonti, Paola Maffi, Antonio Esposito, Francesco De Cobelli, Alessandro Del Maschio
Although the life expectancy of patients with type 1 diabetes mellitus (T1DM) has improved since the introduction of insulin therapy, the acute life-threatening and long-term complications from diabetes mellitus are significant causes of both mortality and morbidity. Percutaneous intra-portal pancreatic islet transplantation (PIPIT) is a minimally invasive, repeatable procedure which allows a β-cell replacement therapy through a liver islet engraftment, leading to insulin release and glycaemic control restoration in patients with diabetes...
April 2018: Gland Surgery
https://www.readbyqxmd.com/read/29769672/pancreas-regeneration
#9
REVIEW
Qiao Zhou, Douglas A Melton
The pancreas is made from two distinct components: the exocrine pancreas, a reservoir of digestive enzymes, and the endocrine islets, the source of the vital metabolic hormone insulin. Human islets possess limited regenerative ability; loss of islet β-cells in diseases such as type 1 diabetes requires therapeutic intervention. The leading strategy for restoration of β-cell mass is through the generation and transplantation of new β-cells derived from human pluripotent stem cells. Other approaches include stimulating endogenous β-cell proliferation, reprogramming non-β-cells to β-like cells, and harvesting islets from genetically engineered animals...
May 2018: Nature
https://www.readbyqxmd.com/read/29768476/treatment-with-specific-soluble-factors-promotes-the-functional-maturation-of-transcription-factor-mediated-pancreatic-transdifferentiated-cells
#10
Hiroaki Motoyama, Akira Kobayashi, Takahide Yokoyama, Akira Shimizu, Hiroshi Sakai, Tsuyoshi Notake, Kentaro Fukushima, Shin-Ichi Miyagawa
Pancreatic lineage-specific transcription factors (TFs) display instructive roles in converting adult cells to endocrine pancreatic cells through a process known as transdifferentiation. However, little is known about potential factors capable of accelerating transdifferentiation following transduction to achieve the functional maturation of transdifferentiated cells. In this study, we demonstrated, using adult liver-derived progenitor cells, that soluble factors utilized in pancreatic differentiation protocols of pluripotent stem cells promote functional maturation of TFs-mediated transdifferentiated cells...
2018: PloS One
https://www.readbyqxmd.com/read/29767474/mesenchymal-stromal-cells-from-shwachman-diamond-syndrome-patients-fail-to-recreate-a-bone-marrow-niche-in-vivo-and-exhibit-impaired-angiogenesis
#11
Donatella Bardelli, Erica Dander, Cristina Bugarin, Claudia Cappuzzello, Alice Pievani, Grazia Fazio, Paolo Pierani, Paola Corti, Piero Farruggia, Carlo Dufour, Simone Cesaro, Marco Cipolli, Andrea Biondi, Giovanna D'Amico
Shwachman-Diamond syndrome (SDS) is a rare multi-organ recessive disease mainly characterised by pancreatic insufficiency, skeletal defects, short stature and bone marrow failure (BMF). As in many other BMF syndromes, SDS patients are predisposed to develop a number of haematopoietic malignancies, particularly myelodysplastic syndrome and acute myeloid leukaemia. However, the mechanism of cancer predisposition in SDS patients is only partially understood. In light of the emerging role of mesenchymal stromal cells (MSCs) in the regulation of bone marrow homeostasis, we assessed the ability of MSCs derived from SDS patients (SDS-MSCs) to recreate a functional bone marrow niche, taking advantage of a murine heterotopic MSC transplant model...
May 16, 2018: British Journal of Haematology
https://www.readbyqxmd.com/read/29763628/whole-snake-venoms-cytotoxic-anti-metastatic-and-antiangiogenic-properties
#12
Harald Kerkkamp, Christoph Bagowski, Jeroen Kool, Babette van Soolingen, Freek Vonk, Daniëlle Vlecken
Currently, biological and organic substances are screened in order to find a new generation of therapeutics active against cancer. Previous research has identified promising candidate peptides in snake venom. In this study, venoms from different snake species (Naja annulifera, Naja kaouthia, Ophiophagus hannah and Echis carinatus) were screened for potential anti-cancer properties using pancreatic tumour cells as the assay system. The cells were incubated with venom and then subjected to the following analyses: (i) in vitro cell death (ii) in vitro migration (iii) in vivo dissemination and (iv) in vivo angiogenesis...
May 12, 2018: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/29761168/outcomes-of-surgical-management-of-familial-intrahepatic-cholestasis-1-and-bile-salt-export-protein-deficiencies
#13
Laura N Bull, Ludmila Pawlikowska, Sandra Strautnieks, Irena Jankowska, Piotr Czubkowski, Jennifer L Dodge, Karan Emerick, Catherine Wanty, Sami Wali, Samra Blanchard, Florence Lacaille, Jane A Byrne, Albertien M van Eerde, Kaija-Leena Kolho, Roderick Houwen, Steven Lobritto, Vera Hupertz, Patricia McClean, Giorgina Mieli-Vergani, Etienne Sokal, Philip Rosenthal, Peter F Whitington, Joanna Pawlowska, Richard J Thompson
Progressive familial intrahepatic cholestasis (PFIC) with normal circulating gamma-glutamyl transpeptidase levels can result from mutations in the ATP8B1 gene (encoding familial intrahepatic cholestasis 1 [FIC1] deficiency) or the ABCB11 gene (bile salt export protein [BSEP] deficiency). We investigated the outcomes of partial external biliary diversion, ileal exclusion, and liver transplantation in these two conditions. We conducted a retrospective multicenter study of 42 patients with FIC1 deficiency (FIC1 patients) and 60 patients with BSEP deficiency (BSEP patients) who had undergone one or more surgical procedures (57 diversions, 6 exclusions, and 57 transplants)...
May 2018: Hepatology Communications
https://www.readbyqxmd.com/read/29757902/differential-impact-of-t-bet-and-ifn%C3%AE-on-pancreatic-islet-allograft-rejection
#14
Alix Besançon, Zeynep Demir, Tania Goncalves, Fabrice Valette, Emilie Panafieu, Lucienne Chatenoud, Sylvaine You
BACKGROUND: T-cell-mediated graft rejection is mostly correlated with potent Th1 responses. However, since IFNγ mice reject their graft as efficiently as wild-type (WT) mice, the exact contribution of IFNγ and its transcription factor T-bet remains a matter of debate. Here, we address this question in the context of pancreatic islet allograft to better inform the molecular pathways that hampers islet survival in vivo. METHODS: Pancreatic islets from BALB/c mice were transplanted in WT, IFNγ or T-bet C57BL/6 mice...
May 2, 2018: Transplantation
https://www.readbyqxmd.com/read/29757700/adhesion-characteristics-of-porcine-pancreatic-islets-and-exocrine-tissue-to-coating-materials
#15
Yoshiki Nakashima, Chika Miyagi-Shiohira, Naoya Kobayashi, Issei Saitoh, Masami Watanabe, Hirofumi Noguchi
Since the report of the Edmonton protocol in 2000, islet transplantation has been implemented worldwide, and xenotransplantation using porcine islets has also been reported. In addition, many basic experiments using pancreatic islets and exocrine tissue after isolation have been reported. Recently, exocrine cells have been found to be essential for inducing the differentiation of pancreatic islets. Therefore, the importance of the culture conditions for pancreatic tissue when conducting experiments using pancreatic tissue is also increasing...
May 14, 2018: Islets
https://www.readbyqxmd.com/read/29756009/molecular-architecture-of-mouse-and-human-pancreatic-zymogen-granules-protein-components-and-their-copy-numbers
#16
Jin-Sook Lee, Joseph A Caruso, Garrett Hubbs, Patricia Schnepp, James Woods, Jingye Fang, Chunying Li, Kezhong Zhang, Paul M Stemmer, Bhanu P Jena, Xuequn Chen
A molecular model of pancreatic zymogen granule (ZG) is critical for understanding its functions. We have extensively characterized the composition and membrane topology of rat ZG proteins. In this study, we report the development of targeted proteomics approaches to quantify representative mouse and human ZG proteins using LC-SRM and heavy isotope-labeled synthetic peptides. The absolute quantities of mouse Rab3D and VAMP8 were determined as 1242 ± 218 and 2039 ± 151 (mean ± SEM) copies per ZG...
2018: Biophysics Reports
https://www.readbyqxmd.com/read/29755519/simulated-cholinergic-reinnervation-of-%C3%AE-ins-1-cells-antidiabetic-utility-of-heterotypic-pseudoislets-containing-%C3%AE-cell-and-cholinergic-cell
#17
Ao Jiao, Feng Li, Chengshuo Zhang, Wu Lv, Baomin Chen, Jialin Zhang
Cholinergic neurons can functionally support pancreatic islets in controlling blood sugar levels. However, in islet transplantation, the level of cholinergic reinnervation is significantly lower compared to orthotopic pancreatic islets. This abnormal reinnervation affects the survival and function of islet grafts. In this study, the cholinergic reinnervation of beta cells was simulated by 2D and 3D coculture of INS-1 and NG108-15 cells. In 2D culture conditions, 20 mM glucose induced a 1.24-fold increase ( p < 0...
2018: International Journal of Endocrinology
https://www.readbyqxmd.com/read/29753677/multicenter-phase-1-2-application-of-adenovirus-specific-t-cells-in-high-risk-pediatric-patients-after-allogeneic-stem-cell-transplantation
#18
Winnie Ip, Juliana M F Silva, Hubert Gaspar, Arindam Mitra, Shreenal Patel, Kanchan Rao, Robert Chiesa, Persis Amrolia, Kimberly Gilmour, Gul Ahsan, Mary Slatter, Andrew R Gennery, Robert F Wynn, Paul Veys, Waseem Qasim
BACKGROUND: Adenovirus (ADV) reactivation can cause significant morbidity and mortality in children after allogeneic stem cell transplantation. Antiviral drugs can control viremia, but viral clearance requires recovery of cell-mediated immunity. METHOD: This study was an open-label phase 1/2 study to investigate the feasibility of generating donor-derived ADV-specific T cells (Cytovir ADV, Cell Medica) and to assess the safety of pre-emptive administration of ADV-specific T cells in high-risk pediatric patients after allogeneic hematopoietic stem cell transplantation (HSCT) to treat adenoviremia...
May 9, 2018: Cytotherapy
https://www.readbyqxmd.com/read/29743451/-significance-of-sarcopenia-in-hepato-biliary-pancreatic-and-transplant-surgery
#19
Toshimi Kaido
No abstract text is available yet for this article.
2018: Nihon Shokakibyo Gakkai Zasshi, the Japanese Journal of Gastro-enterology
https://www.readbyqxmd.com/read/29742420/self-condensation-culture-enables-vascularization-of-tissue-fragments-for-efficient-therapeutic-transplantation
#20
Yoshinobu Takahashi, Keisuke Sekine, Tatsuya Kin, Takanori Takebe, Hideki Taniguchi
Clinical transplantation of tissue fragments, including islets, faces a critical challenge because of a lack of effective strategies that ensure efficient engraftment through the timely integration of vascular networks. We recently developed a complex organoid engineering method by "self-condensation" culture based on mesenchymal cell-dependent contraction, thereby enabling dissociated heterotypic lineages including endothelial cells to self-organize in a spatiotemporal manner. Here, we report the successful adaptation of this method for generating complex tissues from diverse tissue fragments derived from various organs, including pancreatic islets...
May 8, 2018: Cell Reports
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