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Infection and transplantation

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https://www.readbyqxmd.com/read/28647921/proteome-profile-of-aspergillus-terreus-conidia-at-germinating-stage-identification-of-probable-virulent-factors-and-enzymes-from-mycotoxin-pathways
#1
Raman Thakur, Jata Shankar
Aspergillus terreus is an emerging opportunistic fungal pathogen that causes invasive aspergillosis in immunocompromised individuals. The main risk group of individuals for this organism is leukopenic patients, individuals having cancers, bone marrow transplant persons and those who have immunological disorders. The lack of early diagnostic marker for A. terreus and intrinsic resistance to Amphotericin B, further limits the successful therapy of A. terreus-associated infections. The germination of inhaled conidia is the key step to establish successful invasion in host tissues or organs...
June 24, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28647907/a-constant-companion-immune-recognition-and-response-to-cytomegalovirus-with-aging-and-implications-for-immune-fitness
#2
REVIEW
Aisha Souquette, Justin Frere, Megan Smithey, Delphine Sauce, Paul G Thomas
Approximately 50% of individuals aged 6-49 years in the United States are infected with cytomegalovirus (CMV), with seroprevalence increasing with age, reaching 85-90% by 75-80 years according to Bate et al. (Clin Infect Dis 50 (11): 1439-1447, 2010) and Pawelec et al. (Curr Opin Immunol 24:507-511, 2012). Following primary infection, CMV establishes lifelong latency with periodic reactivation. Immunocompetent hosts experience largely asymptomatic infection, but CMV can cause serious illness in immunocompromised populations, such as transplant patients and the elderly...
June 24, 2017: GeroScience
https://www.readbyqxmd.com/read/28647177/infectious-diseases-in-solid-organ-transplant-recipients-analysis-of-autopsied-cases-in-japan
#3
Yuhko Suzuki, Akira Kenjo, Tomiteru Togano, Natsuo Yamamoto, Hitoshi Ohto, Hikaru Kume
BACKGROUND: With the improvements in immunosuppressive agents and graft survival, infections such as mycoses have become major complications after solid organ transplantation (SOT). METHODS: Our group has continuously updated an epidemiological database of visceral mycoses (VM) among autopsy cases in Japan since 1989. Data on infectious agents and clinical information were complied using similar procedures. RESULTS: Among the all autopsied cases studied, 356 undergone SOT...
June 21, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28646951/fecal-microbiota-transplantation-for-recurrent-clostridium-difficile-infection-in-children
#4
Becky Chen, Vishal Avinashi, Simon Dobson
Fecal microbiota transplantation (FMT) is a relatively simple, promising treatment for recurrent Clostridium difficile infection. While there are a wide variety of approaches including mode of delivery, the results are nonetheless encouraging, even amongst younger children. Experience with FMT in the pediatric population is increasing, showing similar success compared to adults. This article will provide an overview of C. difficile infection along with review of the rationale, methods and complications of FMT including the current experience of FMT in children...
June 2017: Journal of Infection
https://www.readbyqxmd.com/read/28646094/immune-mediated-effects-targeting-hepatitis-c-virus-in-a-syngeneic-replicon-cell-transplantation-mouse-model
#5
Sepideh Levander, Fredrik Holmström, Lars Frelin, Gustaf Ahlén, Daniel Rupp, Gang Long, Ralf Bartenschlager, Matti Sällberg
OBJECTIVE: HCV is characterised by its ability to establish chronic infection in hepatocytes and to replicate in the presence of an inflammation. We mimicked this situation in vivo in immune-competent mice by syngeneic transplantation of HCV replicon-containing mouse hepatoma cells. DESIGN: A total of 5 million H-2(b) positive Hep56.1D cells, carrying a subgenomic genotype (gt) 2a replicon (HCV replicon cells) or stably expressing comparable levels of the HCV NS3/4A protease/helicase complex (NS3/4A hepatoma cells), were injected subcutaneously into syngeneic H-2(b)-restricted mice...
June 23, 2017: Gut
https://www.readbyqxmd.com/read/28644910/across-state-lines-fulminant-babesia-microti-infection-in-a-liver-transplant-recipient
#6
Eric G Meissner, John W McGillicuddy, Jerry Squires, Daniel Skipper, Sally Self, Dan Wray, Erin D Moritz, Susan L Stramer, Satish Nadig
The potential for transmission of Babesia microti by blood transfusion is well recognized. Physicians may be unaware that products used for transfusion may be collected from geographically diverse regions. We describe a liver transplant recipient in South Carolina who likely acquired B. microti infection from a unit of blood collected in Minnesota. This article is protected by copyright. All rights reserved.
June 23, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28643867/transfusion-transmitted-cmv-infection%C3%A2-%C3%A2-current-knowledge-and-future-perspectives
#7
REVIEW
M Ziemann, T Thiele
Transmission of human cytomegalovirus (CMV) via transfusion (TT-CMV) may still occur and remains a challenge in the treatment of immunocompromised CMV-seronegative patients, e.g. after stem cell transplantation, and for low birthweight infants. Measures to reduce the risk of TT-CMV have been evaluated in clinical studies, including leucocyte depletion of cellular blood products and/or the selection of CMV-IgG-negative donations. Studies in large blood donor cohorts indicate that donations from newly CMV-IgG-positive donors should bear the highest risk for transmitting CMV infections because they contain the highest levels of CMV-DNA, and early CMV antibodies cannot neutralise CMV...
June 23, 2017: Transfusion Medicine
https://www.readbyqxmd.com/read/28643721/surgical-treatment-of-metarhizium-anisopliae-sclerokeratitis-and-endophthalmitis
#8
Dan Derhy, Arnaud Sauer, Marcela Sabou, Jonathan Letsch, Ermanno Candolfi, Valérie Letscher-Bru, Tristan Bourcier
A 55-year-old nurse was referred with a 5-month history of right eye corneal abscess. The initial injury occurred when doing lawn work. The infection worsened despite multiple antibiotic, antiviral, and steroid treatments. Visual acuity was limited to hand motion. On examination, there was keratitis, ocular hypertension, and a secondary cataract. Corneal scrapings grew a filamentous fungus, identified as Metarhizium anisopliae (MA). Despite intensive antifungal treatment with topical, intravitreous, and systemic voriconazole, purulent corneal melting and scleritis with endophthalmitis rapidly appeared...
June 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28642760/interleukin-6-in-allogeneic-stem-cell-transplantation-its-possible-importance-for-immunoregulation-and-as-a-therapeutic-target
#9
REVIEW
Tor Henrik Anderson Tvedt, Elisabeth Ersvaer, Anders Aune Tveita, Øystein Bruserud
Allogeneic stem cell transplantation is associated with a high risk of treatment-related mortality mainly caused by infections and graft-versus-host disease (GVHD). GVHD is characterized by severe immune dysregulation and impaired regeneration of different tissues, i.e., epithelial barriers and the liver. The balance between pro- and anti-inflammatory cytokine influences the risk of GVHD. Interleukin-6 (IL-6) is a cytokine that previously has been associated with pro-inflammatory effects. However, more recent evidence from various autoimmune diseases (e...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28642130/mir-155-expression-is-downregulated-in-kidney-transplant-patients-with-human-cytomegalovirus-infection
#10
Massimiliano Bergallo, Stefano Gambarino, Paola Montanari, Valentina Daprà, Marco Rassu, Ilaria Galliano, Paolo Ravanini
MicroRNAs are small, noncoding RNAs that control expression of target genes through inhibiting protein translation or inducing degradation of mRNA transcripts of target genes. According to the latest update, 2578 unique mature miRNAs are currently annotated in the human genome and participate in the regulation of multiple events, such as cellular proliferation or apoptosis. Herpesvirus family comprehends many viruses able to control and modulate host-cell processes permitting the survival by a latency phase after primary infection...
June 19, 2017: Transplant Immunology
https://www.readbyqxmd.com/read/28642120/transfusion-challenges-in-hematology-oncology-and-hematopoietic-stem-cell-transplant-literature-review-and-local-experience
#11
REVIEW
Mohamed Elemary, Jerard Seghatchian, Julie Stakiw, Mark Bosch, Waleed Sabry, Hadi Goubran
Transfusion medicine plays a vital role in the supportive care of patients receiving therapy for hematology, oncology and hematopoietic stem cell transplants (HSCT). With advances in therapy with more intensive chemotherapy or radiotherapy, patients usually develop cytopenias and need frequent transfusion support with packed red blood cells, granulocyte transfusion or platelets to support them until they recover from the effect of therapy. HSCT poses unique challenges for transfusion medicine, since transplant recipients may require substantial transfusion support due to cytopenias associated with toxic medications, decreased marrow reserve, infection or their malignancy...
June 3, 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28641097/long-term-complications-after-hematopoietic-cell-transplantation
#12
REVIEW
Navneet S Majhail
The prevalence of autologous and allogeneic hematopoietic cell transplantation (HCT) survivors continues to increase. Among patients whose disease remains in remission for the first 2-5years after transplantation, it is estimated that approximately 80-90% will be alive over the subsequent 10years. However, the relative mortality rates of such patients continue to remain higher than those of their general population peers, with late complications contributing to significant long-term morbidity and mortality...
June 13, 2017: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/28641096/hematopoietic-stem-cell-transplantation-for-sickle-cell-anemia-the-changing-landscape
#13
REVIEW
Adetola A Kassim, Deva Sharma
Allogeneic hematopoietic stem cell transplantation (HSCT) remains the only curative therapy for sickle cell disease (SCD); however, its use is limited by lack of suitable human leukocyte antigen (HLA)-matched donors and decreased application in older patients with significant morbidity. Myeloablative, HLA-identical sibling transplantation in children with SCD offers excellent long-term survival, with overall and event-free survival rates of 95% and 92%, respectively. However, the risk of graft-versus-host-disease, infections, infertility, and other long-term transplant complications, further limits its widespread use...
June 15, 2017: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/28641094/emerging-concepts-in-cytomegalovirus-infection-following-hematopoietic-stem-cell-transplantation
#14
REVIEW
Jose F Camargo, Krishna V Komanduri
Despite the refinements in molecular methods for the detection of cytomegalovirus (CMV) and the advent of highly effective preemptive strategies, CMV remains a leading cause of morbidity and mortality in hematopoietic cell transplant (HCT) recipients. CMV can cause tissue-invasive disease including pneumonia, hepatitis, colitis, retinitis, and encephalitis. Mortality in HCT recipients with CMV disease can be as high as 60%. CMV infection has been associated with increased risk of secondary bacterial and fungal infections, increased risk of graft-versus-host disease, and high rates of nonrelapse mortality following HCT...
June 14, 2017: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/28640530/how-does-age-affect-the-outcome-of-kidney-transplantation-in-elderly-recipients
#15
Flavia Neri, Lucrezia Furian, Francesco Cavallin, Matteo Ravaioli, Cristina Silvestre, Paola Donato, Gaetano La Manna, Antonio Daniele Pinna, Paolo Rigotti
The aging of the on-dialysis population raises the issue of whether to propose elderly patients for kidney transplantation and how to manage their immunosuppression. This study aims to analyze the outcome of kidney transplantation on an Italian series of elderly recipients. We included in this retrospective study all patients over 60 years, receiving a deceased-donor kidney transplantation from January 2004 to December 2014 in two north Italian Centers. We analyzed the correlation of recipient age with graft's and patient's survival, delayed graft function (DGF), acute cellular rejection (ACR), surgical complications, infections and glomerular filtration rate (GFR)...
June 22, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28640517/hepatocellular-carcinoma-in-south-america-evaluation-of-risk-factors-demographics-and-therapy
#16
Jose D Debes, Aaron J Chan, Domingo Balderramo, Luciana Kikuchi, Esteban Gonzalez Ballerga, Jhon E Prieto, Monica Tapias, Victor Idrovo, Milagros B Davalos, Fernando Cairo, Fernando J Barreyro, Sebastian Paredes, Nelia Hernandez, Karla Avendaño, Javier Diaz Ferrer, Ju Dong Yang, Enrique Carrera, Jairo A Garcia, Angelo Z Mattos, Bruno S Hirsch, Pablo T Gonçalves, Flair J Carrilho, Lewis R Roberts
BACKGROUND AND AIMS: Hepatocellular carcinoma (HCC) is the second leading cause of cancer-related death worldwide. Most studies addressing the epidemiology of HCC originate from developed countries. This study reports the preliminary findings of a multinational approach to characterize HCC in South America. METHODS: We evaluated 1336 HCC patients seen at 14 centers in six South American countries using a retrospective study design with participating centers completing a template chart of patient characteristics...
June 22, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28640108/correlation-of-hla-dp-dq-polymorphisms-with-transplant-etiologies-and-prognosis-in-liver-transplant-recipients
#17
Yi Li, Qian Huang, Jiang-Tao Tang, Tian-Tian Wei, Lin Yan, Zhi-Qiang Yang, Yang-Juan Bai, Lan-Lan Wang, Yun-Ying Shi
Previous study has identified that the genetic variants in the human leukocyte antigen (HLA)-DP/DQ region were strongly associated with hepatitis B virus (HBV) infection. But their roles in liver function recovery after hepatic transplantation were still obscure. This study aimed to investigate whether HLA-DP/DQ polymorphisms were associated with post-transplant etiologies and prognosis in Chinese liver transplant recipients.A total of 144 liver transplant recipients were enrolled, which were divided into 2 groups according to the transplant etiology: HBV-related disease and non-HBV-related disease...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28638096/identification-of-a-flavonoid-isolated-from-plum-prunus-domestica-as-a-potent-inhibitor-of-hepatitis-c-virus-entry
#18
Mihika Bose, Mohini Kamra, Ranajoy Mullick, Santanu Bhattacharya, Saumitra Das, Anjali A Karande
Hepatitis C virus (HCV) infection is a major cause of chronic liver diseases that often requires liver transplantation. The standard therapies are limited by severe side effects, resistance development, high expense and in a substantial proportion of cases, fail to clear the infection which bespeak the need for development of well-tolerated antivirals. Since most of the drug development strategies target the replication stage of viral lifecycle, the identification of entry inhibitors might be crucial especially in case of liver-transplant recipients...
June 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28638004/modification-of-the-hcmv-specific-ifn-%C3%AE-release-test-quantiferon-cmv-and-a-novel-proposal-for-its-application
#19
Takahiro Kobayashi, Jun-Ichi Sato, Kazufumi Ikuta, Ryoko Kanno, Kyoko Nishiyama, Tetsuo Koshizuka, Ken Ishioka, Tatsuo Suzutani
Human cytomegalovirus (HCMV) is universally distributed among humans without any adverse effects; however, it induces severe diseases in immunocompromised patients such as organ transplant recipients and AIDS patients. To manage these immunocompromised patients, an easy clinical examination for the monitoring of disease risk is required. In this study, we modified the interferon-γ (IFN-γ) release test (QuantiFERON(®)-CMV) using HCMV immediate early-1 (IE-1) or pp65 whole proteins, or UV-inactivated HCMV particles as an antigen...
June 22, 2017: Fukushima Journal of Medical Science
https://www.readbyqxmd.com/read/28637877/ex-vivoexpanded-adaptive-nk-cells-effectively-kill-primary-acute-lymphoblastic-leukemia-cells
#20
Lisa L Liu, Vivien Beziat, Vincent Oei Yi Sheng, Aline Pfefferle, Marie Schaffer, Soren Lehmann, Eva Hellstrom-Lindberg, Stefan Soderhall, Mats Heyman, Dan Grander, Karl-Johan Malmberg
Manipulation of human NK cell repertoires promises more effective strategies for NK cell-based cancer immunotherapy. A subset of highly differentiated NK cells, termed adaptive NK cells, expands naturally in vivo in response to human cytomegalovirus (HCMV) infection, carries unique repertoires of inhibitory killer cell immunoglobulin-like receptors (KIRs), and displays strong cytotoxicity against tumor cells. Here, we established a robust and scalable protocol for ex vivo generation and expansion of adaptive NK cells for cell therapy against pediatric acute lymphoblastic leukemia (ALL)...
June 21, 2017: Cancer Immunology Research
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