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https://www.readbyqxmd.com/read/28741738/aspergillus-calidoustus-case-series-and-review-of-the-literature
#1
Justin Seroy, Philip Antiporta, Shellee A Grim, Laurie A Proia, Kamaljit Singh, Nina M Clark
Aspergillus calidoustus, previously classified as Aspergillus ustus, is an emerging pathogen in immunocompromised persons. We describe four recent cases of A. calidoustus and review 37 additional cases of A. calidoustus (n=16) or A. ustus (n=25) published through June 2016. Twenty (49%) cases occurred in patients with hematologic malignancy and/or receipt of hematopoietic cell transplantation, and 13 (32%) occurred in solid organ transplant recipients. Antifungal susceptibility was reported in 49% of cases and in 42% treatment failed...
July 25, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28741129/overexpression-of-ghpfn2-enhances-protection-against-verticillium-dahliae-invasion-in-cotton
#2
Wenyan Wang, Yongduo Sun, Libo Han, Lei Su, Guixian Xia, Haiyun Wang
Growing evidence indicates that actin cytoskeleton is involved in plant innate immune responses, but the functional mechanism remains largely unknown. Here, we investigated the behavior of a cotton profilin gene (GhPFN2) in response to Verticillium dahliae invasion, and evaluated its contribution to plant defense against this soil-borne fungal pathogen. GhPFN2 expression was up-regulated when cotton root was inoculated with V. dahliae, and the actin architecture was reorganized in the infected root cells, with a clear increase in the density of filamentous actin and the extent of actin bundling...
July 21, 2017: Science China. Life Sciences
https://www.readbyqxmd.com/read/28739424/respiratory-viruses-in-transplant-recipients-more-than-just-a-cold-clinical-syndromes-and-infection-prevention-principles
#3
REVIEW
Salma Abbas, Jillian E Raybould, Sangeeta Sastry, Oveimar de la Cruz
OBJECTIVES: The aim of this review is to provide updated information on the clinical spectrum, treatment options, and infection prevention strategies for respiratory viral infections (RVI) in both solid organ (SOT) and hematopoietic stem cell transplant (HSCT) patients. METHODS: We searched the MEDLINE and Pubmed databases for literature regarding the aforementioned aspects of RVIs, with focus on respiratory syncytial virus, adenovirus, influenza, parainfluenza, human metapneumovirus and rhinovirus...
July 21, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28735028/protein-only-antimicrobial-peptide-containing-recombinant-nanoparticles-with-inherent-built-in-antibacterial-activity
#4
Naroa Serna, Laura Sánchez-García, Alejandro Sánchez-Chardi, Ugutz Unzueta, Mónica Roldán, Ramón Mangues, Esther Vázquez, Antonio Villaverde
The emergence of bacterial antibiotic resistances is a serious concern in human and animal health. In this context, naturally occurring cationic antimicrobial peptides (AMPs) might play a main role in a next generation of drugs against bacterial infections. Taking an innovative approach to design self-organizing functional proteins, we have generated here protein-only nanoparticles with intrinsic AMP microbicide activity. Using a recombinant version of the GWH1 antimicrobial peptide as building block, these materials show a wide antibacterial activity spectrum in absence of detectable toxicity on mammalian cells...
July 19, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28734784/drug-delivery-innovations-to-address-global-health-challenges-for-pediatric-and-geriatric-populations-through-improvements-in-patient-compliance
#5
Joshua Boateng
Despite significant advances in pharmaceutical and biotechnological drug discovery, the global population is plagued with many challenging diseases. These are further compounded by anticipated explosion in an ageing population, which presents several problems such as polypharmacy, dysphagia and neurological conditions, resulting in non-compliance and disease complications. For antibiotics, poor compliance, can result in development of drug resistant infections which can be fatal. Further, children, especially, in developing countries die unnecessarily from easily treatable diseases (e...
July 19, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28731920/eye-movement-disorders-following-allogeneic-bone-marrow-transplantation-on-fk506-tacrolimus-and-ganciclovir
#6
Barbaros S Karagun, Tugana Akbas, Taner Arpaci, Bulent Antmen
FK506 (tacrolimus) is an immunosuppressive drug and more potent than cyclosporine. FK506 is widely used for immunosuppression in the prevention and treatment of graft-versus-host disease after allogeneic bone marrow transplantation and solid organ transplantation. Neurotoxicity is a recognized complication of FK506 therapy, but ptosis and weakness of eye abduction unilaterally has not been reported in association with FK506 administration to date. We discuss a 13-year-old male patient who developed ptosis and weakness of eye abduction unilaterally 90 days after transplantation with bone marrow from an unrelated donor, for acute lymphoblastic leukemia in this case report...
July 20, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28724761/isg15-modulates-type-i-interferon-signaling-and-antiviral-response-during-hepatitis-e-virus-replication
#7
Harini Sooryanarain, Adam J Rogers, Dianjun Cao, Mary Etna R Haac, Yogesh A Karpe, Xiang-Jin Meng
Hepatitis E virus (HEV), a single-stranded positive-sense RNA virus, generally causes a self-limiting acute viral hepatitis, although chronic HEV infection has recently become a significant clinical problem in immunocompromised individuals especially in solid organ transplant recipients. Innate immunity, via type-I interferon (IFN) response, plays an important role during initial stages of a viral infection. ISG15, an IFN-induced ubiquitin-like protein, is known to have an immunomodulatory role, as well as can impart a direct antiviral effect against a wide spectrum of virus families...
July 19, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28722255/drug-drug-interactions-between-triazole-antifungal-agents-used-to-treat-invasive-aspergillosis-and-immunosuppressants-metabolized-by-cytochrome-p450-3a4
#8
REVIEW
Andreas H Groll, Robert Townsend, Amit Desai, Nkechi Azie, Mark Jones, Marc Engelhardt, Anne-Hortense Schmitt-Hoffman, Robert J Brüggemann
Patients undergoing treatment with immunosuppressant drugs following solid organ or hematopoietic stem cell transplantation are at particular risk for development of serious infections such as invasive aspergillosis. Four triazole antifungal drugs, voriconazole, posaconazole, itraconazole, and isavuconazole, are approved to treat invasive aspergillosis either as first- or second-line therapy. All of these agents are inhibitors of cytochrome P450 3A4, which plays a key role in metabolizing immunosuppressant drugs such as cyclosporine, tacrolimus, and sirolimus...
July 19, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28716027/cytomegalovirus-viraemia-and-mortality-in-renal-transplant-recipients-in-the-era-of-antiviral-prophylaxis-lessons-from-the-western-australian-experience
#9
Linda A Selvey, Wai H Lim, Peter Boan, Ramyasuda Swaminathan, Claudia Slimings, Amy E Harrison, Aron Chakera
BACKGROUND: Cytomegalovirus (CMV) establishes a lifelong infection that is efficiently controlled by the immune system; this infection can be reactivated in case of immunosuppression such as following solid organ transplantation. CMV viraemia has been associated with CMV disease, as well as increased mortality and allograft failure. Prophylactic antiviral medication is routinely given to renal transplant recipients, but reactivation during and following cessation of antiviral prophylaxis is known to occur...
July 17, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28706972/fever-and-pancytopenia-in-a-liver-transplant-recipient-going-against-the-rules-of-occam-s-razor
#10
Lionel Hon Wai Lum, Fei Wen Chen, Louise Jackett, Simone I Strasser, Rebecca J Davis
The syndrome of fever and pancytopenia is not infrequently encountered postliver transplant, and a broad differential list of infectious and noninfectious aetiologies can be invoked. A transplant patient is susceptible to more than 1 opportunistic infection or disease process. We described the diagnostic conundrums in managing our patient who ran a complex protracted course postliver transplant. He was diagnosed to have both disseminated tuberculosis and graft-versus-host disease, a rare complication after solid organ transplantation...
July 2017: Transplantation Direct
https://www.readbyqxmd.com/read/28699311/ganciclovir-resistant-cytomegalovirus-infection-in-abdominal-solid-organ-transplant-recipients-case-series-and-review-of-the-literature
#11
K E Rolling, M R Jorgenson, J L Fose, D A Mandelbrot, R R Redfield, J A Smith
Ganciclovir-resistant cytomegalovirus (GR-CMV) is emerging as a significant infection in the abdominal transplant population. GR-CMV is difficult to manage, and treatment options are limited. We report a descriptive case series of 15 patients who had documented GR-CMV at our center and review the literature on treatment of GR-CMV. The first case in this series was detected in 2012; the majority of cases occurred after January 1, 2014, with approximately 50% occurring in 2015. UL97 and UL54 viral genome mutations were present in 100% and 40% of CMV-infected patients, respectively...
July 12, 2017: Pharmacotherapy
https://www.readbyqxmd.com/read/28696077/legionnaires-disease-in-transplant-recipients-a-15-year-retrospective-study-in-a-tertiary-referral-center
#12
Shobini Sivagnanam, Sara Podczervinski, Susan M Butler-Wu, Vivian Hawkins, Zach Stednick, Lois A Helbert, William A Glover, Estella Whimbey, Jeffrey Duchin, Guang-Shing Cheng, Steven A Pergam
Legionnaires' disease (LD) can be fatal among high-risk transplant recipients. To understand the epidemiology of LD, we reviewed 15-year, longitudinal data from a center in Seattle, Washington that cares for both solid organ transplant (SOT) and hematopoietic cell transplant (HCT) recipients. We identified all laboratory-confirmed LD and extracted data on species, diagnostic modalities, clinical presentation, management, and outcomes from medical records. Among 32 patients with LD, transplant recipients made up the majority of diagnoses (22, 69%; SOT 10, HCT 12)...
July 11, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28695649/single-center-experience-of-antifungal-prophylaxis-for-coccidioidomycosis-in-heart-transplant-recipients-within-an-endemic-area
#13
Graham M Lohrmann, Darko Vucicevic, Romy Lawrence, D Eric Steidley, Robert L Scott, Shimon Kusne, Janis E Blair
In endemic regions, coccidioidomycosis causes substantial morbidity and mortality for patients receiving solid organ transplants. We aimed to demonstrate the effect of antifungal coccidioidal prophylaxis in heart transplant (HT) recipients. We retrospectively reviewed the electronic health records of all patients who received HTs between October 19, 2005, and December 13, 2014. We collected information regarding antifungal regimens and determined whether patients subsequently developed infections. Our 174-person cohort all received antifungal prophylaxis for at least 6 months (mean follow-up, 53...
July 11, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28694422/development-of-graft-site-candidiasis-in-3-solid-organ-transplant-recipients-from-the-same-donor
#14
Nasrin El-Bandar, Daniela C Kroy, Tom Florian Fuller, Jürgen Kramer, Lutz Liefeldt, Klemens Budde, Conrad Blobel, Kurt Miller, Frank Friedersdorff
BACKGROUND Graft-site candidiasis rarely develops in solid organ transplant recipients; however, severe life-threatening complications can occur. We report the course of 3 solid organ transplant recipients developing graft-site candidiasis. CASE REPORT All grafts, consisting of 2 kidneys and 1 liver, were procured from a single donor. Patient data were collected from our database. Candida albicans was isolated from a swab taken during multiple-organ recovery. Complications associated with candidiasis occurred in all 3 recipients with preservation of the liver transplant...
July 11, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28691772/successful-liver-transplantation-despite-donor-transmitted-esbl-producing-klebsiella-pneumoniae-infection-case-report-and-review-of-the-literature
#15
Laura Escolà-Vergé, Ibal Los-Arcos, Junajo González, Mayli Lung, Itxarone Bilbao, Mercè Farré, Teresa Pont, Alberto Sandiumenge, Joan Gavalda, Oscar Len
Donor-derived bacterial infection is a recognized complication of solid organ transplantation. Patients admitted to the intensive care unit are increasingly exposed to infection with multidrug-resistant microorganisms. However, no specific recommendations are available about their suitability as donors. We report a case of donor-transmitted extended-spectrum beta-lactamase-producing Klebsiella pneumoniae infection in a liver recipient, and review the related literature. This article is protected by copyright...
July 10, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28687212/sepsis-and-challenging-infections-in-the-immunosuppressed-patient-in-the-intensive-care-unit
#16
REVIEW
Diana F Florescu, Uriel Sandkovsky, Andre C Kalil
In 2017, most intensive care units (ICU) worldwide are admitting a growing population of immunosuppressed patients. The most common causes of pre-ICU immunosuppression are solid organ transplantation, hematopoietic stem cell transplantation, and infection due to human immunodeficiency virus. In this article, we review the most frequent infections that cause critical care illness in each of these 3 immunosuppressed patient populations.
July 5, 2017: Infectious Disease Clinics of North America
https://www.readbyqxmd.com/read/28681316/donor-derived-candida-stellimalicola-in-a-clinical-specimen-preservation-fluid-contamination-during-pancreas-procurement
#17
Damien Dupont, Antoine Huguenin, Elodie Tisserand, Véronique Reiter, Emmanuel Morelon, Lionel Badet, Isabelle Villena, Martine Wallon, Dominique Toubas
We report here a case of possible donor-derived Candida stellimalicola infection after pancreas transplantation. Candida stellimalicola, an environmental non-filamentous yeast, was isolated from both the peritoneal fluid of the graft donor and the preservation fluid of the transplanted pancreas. Interestingly, this strain exhibited high minimum inhibitory concentrations to azoles. These results justified the use of echinocandins as therapy instead of fluconazole. This switch permitted a favorable outcome. To our knowledge, this is the first report of C...
July 5, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28677367/neurologic-complications-in-kidney-transplant-recipients
#18
Piotr C Piotrowski, Anna Lutkowska, Alexander Tsibulski, Marek Karczewski, Paweł P Jagodziński
<i>Transplantology experiences continuous growth and kidney transplantation is the most frequently transplanted solid organ. Metabolic, cardiovascular, infectious or kidney function-related aspects are widely recognised and are of key interest for transplant doctors. Neurological complications seen in these patients, although known, are less covered in the literature. According to some reports, neurologic symptoms are experienced by almost 9 per 10 transplant recipients. The intensity, severity and type of abnormalities may vary, and most frequently the complications seem to be associated with a direct or indirect effect of immunosuppressive medications, including their direct effect on cells, on blood vessels, and susceptibility to infections...
2017: Folia Neuropathologica
https://www.readbyqxmd.com/read/28661055/evaluation-the-architect-ebv-vca-igm-vca-igg-and-ebna-1-igg-chemiluminescent-immunoassays-to-assess-ebv-serostatus-prior-transplantation
#19
Sarah Maylin, Linda Feghoul, Maud Salmona, Adel Herda, Séverine Mercier-Delarue, François Simon, Jérôme Legoff
Prior to transplantation of hematopoietic stem cells or solid organ, donor and recipient EBV serostatus has to be determined to assess risks of post-transplant lymphoproliferative disorders. Sensitivity of EBV Viral capsid antigens (VCA) IgG and EBV nuclear antigen-1 (EBNA-1) is critical to define past infection and a good specificity of VCA IgM is required to avoid any disqualification of cord blood (CB) units. Architect™ EBV antibody panel (Architect assay) providing a high throughput was compared to a semi-automated ELISA (Etimax assays Diasorin) to assess sensitivities and specificities of VCA and EBNA-1 IgG and VCA IgM on 419 sera collected from immunocompromised patients (n=184) and from pregnant women who agreed to give CB cells (n=235)...
June 29, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28660464/respiratory-tract-infection-caused-by-fonsecaea-monophora-after-kidney-transplantation
#20
Isabella Barbosa Cleinman, Sarah Santos Gonçalves, Marcio Nucci, Danielle Carvalho Quintella, Márcia Halpern, Tiyomi Akiti, Glória Barreiros, Arnaldo Lopes Colombo, Guilherme Santoro-Lopes
Fonsecaea spp. are melanized fungi which cause most cases of chromoblastomycosis. The taxonomy of this genus has been revised, now encompassing four species, with different pathogenic potential: F. pedrosoi, F. nubica, F. pugnacius, and F. monophora. The latter two species present wider clinical spectrum and have been associated with cases of visceral infection, most often affecting the brain. To our knowledge, this is the first report of proven case of F. monophora respiratory tract infection. A Brazilian 57-year-old-female patient underwent kidney transplantation on January 12, 2013...
June 28, 2017: Mycopathologia
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