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https://www.readbyqxmd.com/read/29785085/-wet-transepithelial-phototherapeutic-keratectomy-in-the-management-of-persistent-epithelial-defects-in-the-graft
#1
Sergei V Churashov, Elena V Kudryashova, Alexei N Kulikov, Ernest V Boiko, Valerii F Chernysh, Dmitrii S Maltsev
Purpose: This study aimed to evaluate the efficacy of "wet" transepithelial phototherapeutic keratectomy (TE-PTK) for treating persistent epithelial defects (PEDs) in the corneal graft following penetrating keratoplasty (PKP). Methods: This study describes a noncomparative, prospective interventional case series. Patients with post-PKP graft epithelial defects lasting >3 months despite previous treatments with extensive wear soft contact lenses, amniotic membrane transplantation, and tarsorrhaphy were treated with wet TE-PTK...
2018: Clinical Ophthalmology
https://www.readbyqxmd.com/read/29784902/physician-practice-patterns-and-barriers-to-counselling-on-physical-activity-in-solid-organ-transplant-recipients
#2
Amy Pang, Sarangan Lingham, Weina Zhao, Stephanie Leduc, Agnès Räkel, Ruth Sapir-Pichhadze, Sunita Mathur, Tania Janaudis-Ferreira
BACKGROUND Many solid organ transplant (SOT) recipients fail to meet the recommended physical activity (PA) levels. "Physician recommendation" has previously been reported by SOT recipients as a key facilitator to being more physically active. The purpose of this study was to determine the proportion of Canadian SOT physicians providing PA counselling and identify barriers to including such counselling as part of the SOT recipients' routine care. MATERIAL AND METHODS We conducted a cross-sectional web-based survey study to evaluate physicians' PA counselling practices, including the prevalence and barriers to such practice...
May 22, 2018: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/29783767/direct-detection-of-t-and-b-memory-lymphocytes-by-immunospot%C3%A2-assays-reveals-hcmv-exposure-that-serum-antibodies-fail-to-identify
#3
Fredrik Terlutter, Richard Caspell, Tobias M Nowacki, Alexander Lehmann, Ruliang Li, Ting Zhang, Anna Przybyla, Stefanie Kuerten, Paul V Lehmann
It is essential to identify donors who have not been infected with human cytomegalovirus (HCMV) in order to avoid transmission of HCMV to recipients of blood transfusions or organ transplants. In the present study, we tested the reliability of seronegativity as an indicator for the lack of HCMV exposure in healthy human blood donors. Eighty-two HCMV seronegative individuals were identified, and their peripheral blood mononuclear cells (PBMC) were tested in ImmunoSpot® assays for the presence of HCMV-specific T- and B-memory lymphocytes...
May 19, 2018: Cells
https://www.readbyqxmd.com/read/29780073/early-lvad-implantation-in-a-patient-with-left-ventricular-failure-after-aortic-dissection-with-left-main-stem-involvement
#4
Hazem El Beyrouti, Angela Kornberger, Nancy Halloum, Andres Beiras-Fernandez, Christian-Friedrich Vahl
BACKGROUND: Coronary involvement in aortic dissection heralds a poor outcome. Involvement of the left main stem may lead to left ventricular (LV) failure requiring mechanical circulatory support. CASE REPORT: A staged approach was applied in a 24-year-old female who suffered extensive infarction due to aortic dissection with left main stem involvement. After replacement of the ascending aorta and grafting of the left internal thoracic artery to the left anterior descending artery following a failed attempt at reconstruction of the left coronary ostium, she failed to wean from cardiopulmonary bypass (CPB) and underwent implantation of an extracorporeal life support (ECLS) system as a bridge to decision...
May 21, 2018: Annals of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29774638/loss-of-sirtuin-1-and-mitofusin-2-contributes-to-enhanced-ischemia-reperfusion-injury-in-aged-livers
#5
Sung Kook Chun, Sooyeon Lee, Joseph Flores-Toro, Rebecca Y U, Ming-Jim Yang, Kristina L Go, Thomas G Biel, Catherine E Miney, Schiley Pierre Louis, Brian K Law, Mary E Law, Elizabeth M Thomas, Kevin E Behrns, Christiaan Leeuwenburgh, Jae-Sung Kim
Ischemia/reperfusion (I/R) injury is a causative factor contributing to morbidity and mortality during liver resection and transplantation. Livers from elderly patients have a poorer recovery from these surgeries, indicating reduced reparative capacity with aging. Mechanisms underlying this age-mediated hypersensitivity to I/R injury remain poorly understood. Here, we investigated how sirtuin 1 (SIRT1) and mitofusin 2 (MFN2) are affected by I/R in aged livers. Young (3 months) and old (23-26 months) male C57/BL6 mice were subjected to hepatic I/R in vivo...
May 17, 2018: Aging Cell
https://www.readbyqxmd.com/read/29774169/phase-2-study-of-everolimus-for-relapsed-or-refractory-classical-hodgkin-lymphoma
#6
Patrick B Johnston, Lauren C Pinter-Brown, Ghulam Warsi, Kristen White, Radhakrishnan Ramchandren
Background: The current standard of care for classical Hodgkin lymphoma (HL) is multiagent chemotherapy with or without radiation. In patients who relapse or fail to respond, additional high-dose chemotherapy with autologous hematopoietic stem cell transplantation (AHSCT) can improve progression-free survival (PFS). Novel therapies are required for patients refractory to chemotherapy and AHSCT. The mammalian target of rapamycin inhibitor everolimus has shown preliminary activity in preclinical models of HL and promising efficacy in patients with relapsed or refractory HL...
2018: Experimental Hematology & Oncology
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
#7
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/29766558/a-cure-rate-model-for-q-learning-estimating-an-adaptive-immunosuppressant-treatment-strategy-for-allogeneic-hematopoietic-cell-transplant-patients
#8
Erica E M Moodie, David A Stephens, Shomoita Alam, Mei-Jie Zhang, Brent Logan, Mukta Arora, Stephen Spellman, Elizabeth F Krakow
Cancers treated by transplantation are often curative, but immunosuppressive drugs are required to prevent and (if needed) to treat graft-versus-host disease. Estimation of an optimal adaptive treatment strategy when treatment at either one of two stages of treatment may lead to a cure has not yet been considered. Using a sample of 9563 patients treated for blood and bone cancers by allogeneic hematopoietic cell transplantation drawn from the Center for Blood and Marrow Transplant Research database, we provide a case study of a novel approach to Q-learning for survival data in the presence of a potentially curative treatment, and demonstrate the results differ substantially from an implementation of Q-learning that fails to account for the cure-rate...
May 16, 2018: Biometrical Journal. Biometrische Zeitschrift
https://www.readbyqxmd.com/read/29765170/bk-virus-induced-renal-allograft-nephropathy
#9
Karel Krejci, Tomas Tichy, Jana Bednarikova, Kamil Zamboch, Josef Zadrazil
BK virus nephropathy (BKVN) is a serious opportunistic infection threatening renal function especially during the first year after transplantation. Its incidence is now on the rise and is closely related to the level of the recipient's immune system inhibition. This is more intensive with current trends in transplantation medicine, where more potent immunosuppressive protocols are used and more aggressive antirejection therapy is applied. In the absence of BK virus (BKV) specific therapy and limited treatment options for advanced BKVN, active screening of BKV replication and subsequent preemptive adjustment of immunosuppression are essential measures to prevent BKVN...
May 16, 2018: Biomedical Papers of the Medical Faculty of the University Palacký, Olomouc, Czechoslovakia
https://www.readbyqxmd.com/read/29761937/-mirror-mirror-on-the-wall-%C3%A2-pediatric-liver-transplantation-in-the-case-of-situs-inversus-totalis-with-a-disrupted-inferior-vena-cava
#10
Colston A Edgerton, Megan Gross, Nagraj Kasi, Winston Hewitt, Sara Edmondson, Vinayak S Rohan, Satish N Nadig
We present the unique case of a 15-month-old male born with biliary atresia and situs inversus totalis and disrupted inferior vena cava who underwent a successful liver transplantation. The patient had previously undergone a failed Kasai procedure and presented with persistent hyperbilirubinemia. The patient was transplanted with a left lateral segment donor having standard arterial anatomy. Technical considerations included identifying completely replaced arterial anatomy in the recipient from the superior mesenteric artery and creating a branch patch between the gastroduodenal artery and HA, anastomosing the donor left hepatic vein to confluences of the donor left, middle, and right hepatic veins, using a "lazy-S" configuration of portal vein anastomosis, and suspending the allograft to the abdominal wall...
May 15, 2018: Pediatric Transplantation
https://www.readbyqxmd.com/read/29759428/atrial-fibrillation-and-pulmonary-venous-electrical-conduction-recovery-after-full-surgical-resection-and-anastomosis-of-the-pulmonary-veins-insights-from-follow-up-and-ablation-procedures-in-lung-transplant-recipients
#11
Ayman A Hussein, Tanmay S Panchabhai, Marie M Budev, Khaldoun Tarakji, Amr F Barakat, Walid Saliba, Bruce Lindsay, Oussama M Wazni
OBJECTIVES: The authors report their experience with atrial fibrillation (AF) rates and ablation findings in lung transplant recipients. BACKGROUND: Pulmonary venous (PV) conduction recovery accounts for most failed atrial fibrillation (AF) catheter ablation procedures. Lung transplantation involves full surgical resection and replacement of the recipient's PVs with donor's PVs, which may represent the ultimate PV ablation. METHODS: They followed 755 consecutive lung transplant recipients categorized based on transplant status (unilateral vs...
June 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29758112/novel-and-emerging-therapies-for-cholestatic-liver-diseases
#12
Jordan Goldstein, Cynthia Levy
While bile acids are important for both digestion and signaling, hydrophobic bile acids can be harmful especially when in high concentrations. Mechanisms for protection of cholangiocytes against bile acid cytotoxicity include negative feedback loops via farnesoid X nuclear receptor (FXR) activation, the bicarbonate umbrella, cholehepatic shunting and anti-inflammatory signaling, among others. By altering or overwhelming these defense mechanisms, cholestatic diseases such as primary biliary cholangitis (PBC) and primary sclerosing cholangitis (PSC) can further progress to biliary cirrhosis, end-stage liver disease and death or liver transplantation...
May 14, 2018: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/29757759/mechanical-circulatory-support-of-the-right-ventricle-for-adult-and-pediatric-patients-with-heart-failure
#13
Steven G Chopski, Nohra M Murad, Carson S Fox, Randy M Stevens, Amy L Throckmorton
The clinical implementation of mechanical circulatory assistance for a significantly dysfunctional or failing left ventricle as a bridge-to-transplant or bridge-to-recovery is on the rise. Thousands of patients with left-sided heart failure are readily benefitting from these life-saving technologies, and left ventricular failure often leads to severe right ventricular dysfunction or failure. Right ventricular failure (RVF) has a high rate of mortality caused by the risk of multisystem organ failure and prolonged hospitalization for patients after treatment...
May 10, 2018: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/29755641/ischemic-preconditioning-attenuates-acute-lung-injury-after-partial-liver-transplantation
#14
Qinlong Liu, Hasibur Rehman, Yasodha Krishnasamy, John J Lemasters, Zhi Zhong
Pulmonary complications frequently occur after liver transplantation and are often life-threatening. Thus, we investigated whether hepatic ischemic preconditioning (IP) attenuates acute lung injury (ALI) after small-for-size liver transplantation. Rat livers were explanted after 9-min ischemia plus 5-min reperfusion, reduced to 50% of original size ex vivo , and implanted into recipients with approximately twice the donor body weight, resulting in quarter-size liver grafts (QSG). After QSG transplantation, hepatic Toll-like receptor 4 (TLR4) and tumor necrosis factor-α (TNFα ) expression increased markedly and high mobility group box-1 (HMGB1), an endogenous damage-associated molecular pattern molecule (DAMP), was released from QSG into the blood...
2018: International Journal of Physiology, Pathophysiology and Pharmacology
https://www.readbyqxmd.com/read/29753156/antiviral-t-cells-for-adenovirus-in-the-pre-transplant-period-a-bridge-therapy-for-severe-combined-immunodeficiency
#15
Holly K Miller, Patrick J Hanley, Haili Lang, Christopher A Lazarski, Elizabeth A Chorvinsky, Sarah McCormack, Lauren Roesch, Shuroug Albihani, Marcus Dean, Fahmida Hoq, Roberta H Adams, Catherine Bollard, Michael D Keller
Viral infections can be life-threatening in patients with severe combined immunodeficiency (SCID) and other forms of profound primary immunodeficiency disorders both before and after hematopoietic stem cell transplant (HSCT). Adoptive immunotherapy with virus-specific T-cells (VST) has been utilized in many patients in the setting of HSCT, but has very rarely been attempted for treatment of viral infections before HSCT. Here we describe the use of VSTs in an infant with RAG1 SCID who had developed disseminated adenovirus which failed to improve on cidofovir...
May 9, 2018: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29749783/acute-graft-v-host-disease-developing-an-extracorporeal-photopheresis-outreach-service
#16
Tracy Maher, Peter Taylor, Arun Alfred
Acute graft v host disease (AGVHD) is the main complication and cause of non-relapse mortality following allogenic hematopoietic stem cell transplantion. It occurs when donor immune cells attack host tissues. The three main organs that AGVHD affects are skin, liver and gastrointestinal tract, with one or more organs being involved. Extracorporeal photopheresis (ECP) is a second-line treatment for AGVHD in patients who fail to respond to high-dose steroids. It is an immuno-modulatory rather than immunosuppressive therapy...
May 10, 2018: British Journal of Nursing: BJN
https://www.readbyqxmd.com/read/29749243/the-predictive-value-of-risk-indices-for-cardiac-complications-in-living-donor-liver-transplantation
#17
I P Canbolat, Y Erdogan, G Adali, O Kaplan, M Dayangac, Y Yuzer, Y Tokat
BACKGROUND AND AIMS: The American College of Surgeons' National Surgical Quality Improvement Program (NSQIP) risk tool and Revised Cardiac Risk Index (RCRI) are recommended tools for cardiovascular assessment before non-cardiac surgery to predict early postoperative cardiac morbidity and mortality. Their predictive value for postoperative cardiovascular morbidity and mortality after liver transplantation is unknown. We aimed to evaluate the validity of these two risk tools to predict early (30-day) cardiovascular complications and in-hospital all-cause mortality...
2018: Bratislavské Lekárske Listy
https://www.readbyqxmd.com/read/29746874/real-world-use-of-fidaxomicin-in-a-large-uk-tertiary-hospital-how-effective-is-it-for-treating-recurrent-disease
#18
D A Enoch, R Santos, C J Phillips, C Micallef, M Murphy, S H Aliyu, D Massey, N M Brown
We reviewed all courses of fidaxomicin use in our hospital. It was used for first recurrence (6 times), second recurrence (8) and third recurrence (once). One received fidaxomicin first-line. Eight patients initially responded to therapy. Three of these were asymptomatic at 90 days; three remained asymptomatic at 30 days and two had recurrences 5 and 9 days after stopping therapy. Four patients failed to respond; two required faecal transplantation and one required a colectomy. Two patients deteriorated and two patients died...
May 7, 2018: Journal of Hospital Infection
https://www.readbyqxmd.com/read/29746329/descemet-membrane-endothelial-keratoplasty-after-penetrating-keratoplasty-features-for-success
#19
Adi Einan-Lifshitz, Avner Belkin, Nir Sorkin, Zale Mednick, Tanguy Boutin, Ishrat Gill, Mohammad Karimi, Clara C Chan, David S Rootman
PURPOSE: To evaluate Descemet membrane endothelial keratoplasty (DMEK) in the setting of failed penetrating keratoplasty (PKP) and to identify factors associated with DMEK success and failure after PKP. METHODS: A retrospective chart review of patients who underwent DMEK for failed PKP at Toronto Western Hospital, Canada, between 2014 and 2017 was performed. Demographic characteristics, number of previous transplants, intraoperative and postoperative complications, best spectacle-corrected visual acuity (BSCVA), and endothelial cell density were analyzed...
May 8, 2018: Cornea
https://www.readbyqxmd.com/read/29743195/isovolumic-loading-of-the-failing-heart-by-intraventricular-placement-of-a-spring-expander-attenuates-cardiac-atrophy-after-heterotopic-heart-transplantation
#20
Martin Pokorný, Iveta Mrázová, Jan Šochman, Vojtěch Melenovský, Jiří Malý, Jan Pirk, Lenka Červenková, Janusz Sadowski, Zdeněk Čermák, Karel Volenec, Šárka Vacková, Hana Maxová, Luděk Červenka, Ivan Netuka
Cardiac atrophy is the most common complication of prolonged application of the left ventricle assist device in patients with advanced heart failure. Our aim was to evaluate the course of unloading-induced cardiac atrophy in rats with failing hearts, and to examine if increased isovolumic loading obtained by intraventricular implantation of an especially designed spring expander would attenuate this process. Heterotopic abdominal heart transplantation (HTx ) was used as a rat model of heart unloading. Heart failure (HF) was induced by volume overload achieved by creation of the aorto-caval fistula...
May 9, 2018: Bioscience Reports
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