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https://www.readbyqxmd.com/read/28329671/trends-of-skin-cancer-incidence-following-transplantation-in-the-united-states
#1
Sarah T Arron
BackgroundSkin cancer is the most common malignancy occurring after organ transplantation. Although previous research has reported an increased risk of skin cancer in solid organ transplant recipients (OTR), no study has estimated the post-transplant population-based incidence in the US. The objective of this study is to determine the incidence and evaluate the predictors of post-transplant skin cancer, including squamous cell carcinoma (SCC), melanoma (MM), and Merkel cell carcinoma (MCC) in a cohort of US OTR receiving a primary transplant in 2003 or 2008...
September 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329030/protective-factors-in-the-intestinal-microbiome-against-clostridium-difficile-infection-in-recipients-of-allogeneic-hematopoietic-stem-cell-transplantation
#2
Yeon Joo Lee, Esther P Arguello, Robert R Jenq, Eric Littmann, Grace J Kim, Liza C Miller, Lilan Ling, Cesar Figueroa, Elizabeth Robilotti, Miguel-Angel Perales, Juliet N Barker, Sergio Giralt, Marcel R M van den Brink, Eric G Pamer, Ying Taur
Background.: Clostridium difficile infection (CDI) is a frequent complication in recipients of allogeneic hematopoietic stem cell transplantation (allo-HSCT), who receive intensive treatments that significantly disrupt the intestinal microbiota. In this study, we examined the microbiota composition of allo-HSCT recipients to identify bacterial colonizers that confer protection against CDI following engraftment. Methods.: Feces collected from adult recipients allo-HSCT at engraftment were analyzed; 16S rRNA genes were sequenced and analyzed from each sample...
January 30, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28325116/stem-cell-markers-describe-a-transition-from-somatic-to-pluripotent-cell-states-in-a-rat-model-of-endometriosis
#3
Essam Rashad Othman, Fatma Yassine Meligy, Ayat Abdel-Rahman Sayed, Mohamed Ahmed El-Mokhtar, Abeer Mohamed Refaiy
OBJECTIVE: To study Thy1 as a fibroblast marker, SSEA1 as a marker of intermediate pluripotency, and Oct4 as a marker of established pluripotency in rat model of endometriosis. DESIGN: In vivo animal study. MATERIALS AND METHODS: Endometriosis was induced in 20 albino female rats through autologous transplantation of one uterine horn to mesentery of intestine. Other 20 rats had their horn removed without transplantation (controls). Rats were sacrificed 4 weeks after induction surgery...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28324830/chitinase-3-like-1-deficient-donor-splenocytes-accentuated-the-pathogenesis-of-acute-graft-versus-host-diseases-through-regulating-t-cell-expansion-and-type-i-inflammation
#4
Zengyao Li, Jian Gu, Jing Liu, Qin Zhu, Hao Lu, Yunjie Lu, Jianhua Rao, Ling Lu, Xuehao Wang
Acute graft-versus-host disease (aGVHD) is a major complication following transplantation, limiting the success of this therapy. Chitinase 3-like-1 (CHI3L1), a member of the glycosyl hydrolase 18 family, plays a critical role in bacterial infections, allergic disease and a variety of malignancies. Here, we investigated whether CHI3L1 could affect the pathogenesis of aGVHD in a mouse allo-HCT model. In this study, we show that CHI3L1 deficiency in donor T cells increased the severity of aGVHD through enhancing systemic and local inflammation...
March 16, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28323128/fecal-microbiota-transplantation-fmt-could-reverse-the-severity-of-experimental-necrotizing-enterocolitis-nec-via-oxidative-stress-modulation
#5
Xiaomei Li, Xiaowen Li, Qingjuan Shang, Zongwei Gao, Fabao Hao, Hongjie Guo, Chunbao Guo
Fecal microbiota transplantation (FMT) has been used successfully to treat a variety of gastroenterological diseases. The alterations of microbiota in mouse models of necrotizing enterocolitis (NEC) as well as in patients suggested the possibility of treating NEC with FMT. Here we show that FMT caused an improvement in the histopathology and symptoms of NEC in WT mice, but not Grx1-/- mice. FMT eliminated O2(•)- production and promoted NO production in experimental NEC mice though the modulation of S-glutathionylation of eNOS (eNOS-SSG)...
March 16, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28322704/transmission-of-hepatitis-a-virus-through-combined-liver-small-intestine-pancreas-transplantation
#6
Monique A Foster, Lauren M Weil, Sherry Jin, Thomas Johnson, Tonya R Hayden-Mixson, Yury Khudyakov, Pallavi D Annambhotla, Sridhar V Basavaraju, Saleem Kamili, Jana M Ritter, Noele Nelson, George Mazariegos, Michael Green, Ryan W Himes, David T Kuhar, Matthew J Kuehnert, Jeffrey A Miller, Rachel Wiseman, Anne C Moorman
Although transmission of hepatitis A virus (HAV) through blood transfusion has been documented, transmission through organ transplantation has not been reported. In August 2015, state health officials in Texas, USA, were notified of 2 home health nurses with HAV infection whose only common exposure was a child who had undergone multi-visceral organ transplantation 9 months earlier. Specimens from the nurses, organ donor, and all organ recipients were tested and medical records reviewed to determine a possible infection source...
April 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28320829/tissue-engineering-functional-gastrointestinal-regions-the-importance-of-stem-and-progenitor-cells
#7
Andrew Trecartin, Tracy Grikscheit
The intestine shows extraordinary regenerative potential that might be harnessed to alleviate numerous morbid and lethal human diseases. The intestinal stem cells regenerate the epithelium every 5 days throughout an individual's lifetime. Understanding stem-cell signaling affords power to influence the niche environment for growing intestine. The manifold approaches to tissue engineering may be organized by variations of three basic components required for the transplantation and growth of stem/progenitor cells: (1) cell delivery materials or scaffolds; (2) donor cells including adult stem cells, induced pluripotent stem cells, and in vitro expansion of isolated or cocultured epithelial, smooth muscle, myofibroblasts, or nerve cells; and (3) environmental modulators or biopharmaceuticals...
March 20, 2017: Cold Spring Harbor Perspectives in Medicine
https://www.readbyqxmd.com/read/28319561/pediatric-enteric-neuropathies-diagnosis-and-current-management
#8
Maggie L Westfal, Allan M Goldstein
PURPOSE OF REVIEW: Neurointestinal diseases are increasingly recognized as causes of significant gastrointestinal morbidity in children. This review highlights the most common pediatric enteric neuropathies and their diagnosis and management, emphasizing insights and discoveries from the most recent literature available. RECENT FINDINGS: The embryologic and histopathologic causes of enteric neuropathies are varied. They range from congenital aganglionosis in Hirschsprung disease, to autoimmune-mediated loss of neuronal subtypes in esophageal achalasia and Chagas disease, to degenerative neuropathies in some cases of chronic intestinal pseudo-obstruction and gastroparesis...
March 17, 2017: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/28319059/camk2%C3%AE-in-intestinal-epithelial-cells-modulates-colitis-associated-colorectal-carcinogenesis-via-enhancing-stat3-activation
#9
X Ma, Z Meng, L Jin, Z Xiao, X Wang, W M Tsark, L Ding, Y Gu, J Zhang, B Kim, M He, X Gan, J E Shively, H Yu, R Xu, W Huang
Inflammation is one of the major risk factors for cancer. Here, we show that calcium/calmodulin-dependent protein kinase II gamma (CAMK2γ) in intestinal epithelial cells (IECs) modulates inflammatory signals and promotes colitis-associated cancer (CAC) in mice. We have identified CAMK2γ as a downstream target of colitis-induced WNT5A signaling. Furthermore, we have shown that CAMK2γ protects against intestine tissue injury by increasing IEC survival and proliferation. Calcium/calmodulin-dependent protein kinase II gamma knockout mice displayed reduced CAC...
March 20, 2017: Oncogene
https://www.readbyqxmd.com/read/28315818/sclerosing-encapsulated-peritonitis-a-devastating-and-infrequent-disease-complicating-kidney-transplantation-case-report-and-literature-review
#10
Liliana Caicedo, Alejandro Delgado, Luis A Caicedo, Juan Carlos Bravo, Laura S Thomas, Martin Rengifo, Jorge I Villegas, Oscar Serrano, Gabriel J Echeverri
INTRODUCTION: Sclerosing Encapsulating Peritonitis (SEP) is a rare condition with an incidence of up to 3% and a mortality of up to 51% among peritoneal dialysis (PD) patients (Brown et al., Korte et al. and Kawanishi et al.). In the last ten years, the incidence of SEP in kidney transplant recipients has increased (Nakamoto, de Sousa et al. and Korte et al.). PRESENTATION OF CASE: A 31-year old male with a 15 years history of PD and later kidney retransplantation was admitted to the emergency service after experiencing several weeks of diffuse abdominal pain which had escalated to include vomiting and diarrhea during the 24h previous to admission...
March 1, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28296584/intestinal-microbiota-and-relapse-after-hematopoietic-cell-transplantation
#11
Jonathan U Peled, Sean M Devlin, Anna Staffas, Melissa Lumish, Raya Khanin, Eric R Littmann, Lilan Ling, Satyajit Kosuri, Molly Maloy, John B Slingerland, Katya F Ahr, Kori A Porosnicu Rodriguez, Yusuke Shono, Ann E Slingerland, Melissa D Docampo, Anthony D Sung, Daniela Weber, Amin M Alousi, Boglarka Gyurkocza, Doris M Ponce, Juliet N Barker, Miguel-Angel Perales, Sergio A Giralt, Ying Taur, Eric G Pamer, Robert R Jenq, Marcel R M van den Brink
Purpose The major causes of mortality after allogeneic hematopoietic-cell transplantation (allo-HCT) are relapse, graft-versus-host disease (GVHD), and infection. We have reported previously that alterations in the intestinal flora are associated with GVHD, bacteremia, and reduced overall survival after allo-HCT. Because intestinal bacteria are potent modulators of systemic immune responses, including antitumor effects, we hypothesized that components of the intestinal flora could be associated with relapse after allo-HCT...
March 15, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28296583/relationship-between-intestinal-bacteria-and-the-anticancer-effect-of-hematopoietic-stem-cell-transplantation
#12
Joseph H Antin
No abstract text is available yet for this article.
March 15, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28295952/long-term-outcomes-of-living-related-small-intestinal-transplantation-in-children-a-single-center-experience
#13
Sandra Garcia Aroz, Ivo Tzvetanov, Elizabeth Anne Hetterman, Hoonbae Jeon, Jose Oberholzer, Giuliano Testa, Eunice John, Enrico Benedetti
Pediatric patients with irreversible intestinal failure present a significant challenge to meet the nutritional needs that promote growth. From 2002 to 2013, 13 living-related small intestinal transplantations were performed in 10 children, with a median age of 18 months. Grafts included isolated living-related intestinal transplantation (n=7), and living-related liver and small intestine (n=6). The immunosuppression protocol consisted of induction with thymoglobulin and maintenance therapy with tacrolimus and steroids...
March 12, 2017: Pediatric Transplantation
https://www.readbyqxmd.com/read/28295657/severe-acute-cellular-rejection-after-intestinal-transplantation-is-associated-with-poor-patient-and-graft-survival
#14
Genevieve Huard, Thomas D Schiano, Jang Moon, Kishore Iyer
BACKGROUND: Severe acute cellular rejection (ACR) occurs frequently after intestinal transplantation (ITx). AIM: To evaluate the outcomes and the risk factors for graft failure and mortality in patients with severe ACR after ITx. METHODS: Retrospective study evaluating all ITx recipients who developed severe ACR between 01/2000 and 07/2014. Demographic and histologic data were reviewed. RESULTS: 20/126 (15.9%) ITx recipients developed severe ACR...
March 10, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28294563/a-new-material-for-tissue-engineered-vagina-reconstruction-acellular-porcine-vagina-matrix
#15
Jing-Kun Zhang, Run-Xuan Du, Lin Zhang, Ya-Nan Li, Ming-le Zhang, Shuo Zhao, Xiang-Hua Huang, Yan-Fang Xu
Acellular matrix materials have been widely used to repair various tissues and organs. According to the plastic principle, when a part of the body is lost, it should be replaced with a similar material. Therefore, the use of a homologous organ-specific acellular vaginal tissue in vagina reconstruction repair surgery may show good results. However, the acellular vagina matrix (AVM) form large vertebrates is difficult to isolate. In this study, we described a multi-step method to prepare porcine AVM and evaluated the efficacy of acellularization...
March 10, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28293920/the-intriguing-link-between-the-intestinal-microbiota-and-cardiovascular-disease
#16
Giuseppe Lippi, Elisa Danese, Camilla Mattiuzzi, Emmanuel J Favaloro
Human microbiota is a term conventionally used to define the normal flora of microbes living in all of us, most of which are resident in the gastrointestinal tract. Despite it having been known for some time that the vast majority of intestinal bacteria exert a strong influence on human life, recent technologic breakthroughs have made it possible to more accurately characterize the host microbial communities and explore their relationship with many human diseases. Notably, the evidence accumulated over the past 10 years suggests that a reasonable relationship can now be established between gut microbiota composition and the risk of cardiovascular disease...
March 14, 2017: Seminars in Thrombosis and Hemostasis
https://www.readbyqxmd.com/read/28289671/encapsulating-peritoneal-sclerosis-in-liver-transplant-recipients-a-report-of-2-cases
#17
Kyo Won Lee, Chan Woo Cho, Nuri Lee, Sanghoon Lee, Jong Man Kim, Gyu-Seong Choi, Choon Hyuck David Kwon, Jae-Won Joh, Suk-Koo Lee
Encapsulating peritoneal sclerosis (EPS) is a rare cause of intestinal obstruction by a thick fibrous membrane wrapping around the small intestine. It is a possible complication after liver transplantation (LT) that can be fatal. This report describes 2 cases of EPS after LT that were successfully treated with surgery, corticosteroids, tamoxifen, and mammalian target of rapamycin inhibitor. After treatment in both cases, the patients were able to start oral feeding and have been symptom free for more than 1 year...
March 2017: Annals of Surgical Treatment and Research
https://www.readbyqxmd.com/read/28286571/we-are-not-alone-a-case-for-the-human-microbiome-in-extra-intestinal-diseases
#18
EDITORIAL
S Shivaji
BACKGROUND: "Dysbiosis" in the gut microbiome has been implicated in auto-immune diseases, in inflammatory diseases, in some cancers and mental disorders. The challenge is to unravel the cellular and molecular basis of dysbiosis so as to understand the disease manifestation. MAIN BODY: Next generation sequencing and genome enabled technologies have led to the establishment of the composition of gut microbiomes and established that "dysbiosis" is the cause of several diseases...
2017: Gut Pathogens
https://www.readbyqxmd.com/read/28286566/gastrointestinal-manifestations-of-mitochondrial-disorders-a-systematic-review
#19
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/28283650/culturing-human-intestinal-stem-cells-for-regenerative-applications-in-the-treatment-of-inflammatory-bowel-disease
#20
REVIEW
Fredrik Eo Holmberg, Jakob B Seidelin, Xiaolei Yin, Benjamin E Mead, Zhixiang Tong, Yuan Li, Jeffrey M Karp, Ole H Nielsen
Both the incidence and prevalence of inflammatory bowel disease (IBD) is increasing globally; in the industrialized world up to 0.5% of the population are affected and around 4.2 million individuals suffer from IBD in Europe and North America combined. Successful engraftment in experimental colitis models suggests that intestinal stem cell transplantation could constitute a novel treatment strategy to re-establish mucosal barrier function in patients with severe disease. Intestinal stem cells can be grown in vitro in organoid structures, though only a fraction of the cells contained are stem cells with regenerative capabilities...
March 10, 2017: EMBO Molecular Medicine
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