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https://www.readbyqxmd.com/read/28641354/-acute-liver-failure-acute-on-chronic-liver-failure-hepatorenal-syndrome-hepatopulmonary-syndrome-and-portopulmonary-hypertension-artificial-liver-support-on-the-icu
#1
Uwe Lodes, David Jacob, Frank Meyer
Background Acute hepatic dysfunction in the form of acute liver failure (ALF) or acute-on-chronic liver failure (ACLF) is a disease with a high risk of mortality and requires interdisciplinary intensive care. Aim This article explains the nomenclature, pathophysiology, prognosis and possible treatment options of ALF and ACLF, including the possibilities of extracorporeal liver support therapy at the point of liver transplantation (LTx). Method Narrative review with a selective literature review and representative case studies...
June 2017: Zentralblatt Für Chirurgie
https://www.readbyqxmd.com/read/28641323/ischaemia-reperfusion-injury-and-hyperbaric-oxygen-pathways-a-review-of-cellular-mechanisms
#2
REVIEW
Ashish Francis, Richard Baynosa
Ischaemia-induced tissue injury has wide-ranging clinical implications including myocardial infarction, stroke, compartment syndrome, ischaemic renal failure and replantation and revascularization. However, the restoration of blood flow produces a 'second hit' phenomenon, the effect of which is greater than the initial ischaemic event and characterizes ischaemia-reperfusion (IR) injury. Some examples of potential settings of IR injury include: following thrombolytic therapy for stroke, invasive cardiovascular procedures, solid organ transplantation, and major trauma resuscitation...
June 2017: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
https://www.readbyqxmd.com/read/28641308/detection-of-phosphatidylserine-positive-exosomes-for-the-diagnosis-of-early-stage-malignancies
#3
Raghava Sharma, Xianming Huang, Rolf A Brekken, Alan J Schroit
BACKGROUND: There has been increasing interest in the detection of tumour exosomes in blood for cancer diagnostics. Most studies have focussed on miRNA and protein signatures that are surrogate markers for specific tumour types. Because tumour cells and tumour-derived exosomes display phosphatidylserine (PS) in their outer membrane leaflet, we developed a highly sensitive ELISA-based system that detects picogram amounts of exosomal phospholipid in plasma as a cancer biomarker. METHODS: This report describes the development of a highly specific and sensitive ELISA for the capture of PS-expressing tumour exosomes in the blood of tumour-bearing mice...
June 22, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28641235/computer-aided-training-sensorimotor-cortex-functions-in-humans-before-the-upper-limb-transplantation-using-virtual-reality-and-sensory-feedback
#4
Marek Kurzynski, Anna Jaskolska, Jaroslaw Marusiak, Andrzej Wolczowski, Przemyslaw Bierut, Lukasz Szumowski, Jerzy Witkowski, Katarzyna Kisiel-Sajewicz
One of the biggest problems of upper limb transplantation is lack of certainty as to whether a patient will be able to control voluntary movements of transplanted hands. Based on findings of the recent research on brain cortex plasticity, a premise can be drawn that mental training supported with visual and sensory feedback can cause structural and functional reorganization of the sensorimotor cortex, which leads to recovery of function associated with the control of movements performed by the upper limbs. In this study, authors - based on the above observations - propose the computer-aided training (CAT) system, which generating visual and sensory stimuli, should enhance the effectiveness of mental training applied to humans before upper limb transplantation...
June 15, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28641099/reduced-intensity-versus-myeloablative-allogeneic-transplantation
#5
REVIEW
Daniel J Weisdorf
Allotransplantation cures patients by cytoreduction and the graft-versus-tumor (leukemia; graft-versus-leukemia [GVL]) alloresponse; both eliminate residual disease. The spectrum of conditioning intensity influences toxicities and non-relapse mortality. The spectrum of tumor sensitivity to the GVL response influences relapse. Balancing tolerable toxicities (influenced by patients' performance status and comorbidities) is also influenced by the graft. Intense immunosuppression (for engraftment and graft-versus-host disease prevention) may constrain the immunologic potency of the graft and limit the antineoplastic capacity of the transplant, thus requiring more intense or more effective conditioning regimens to limit the risks of relapse and permit satisfactory disease-free survival...
June 14, 2017: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/28641098/trends-in-hematopoietic-stem-cell-transplant-activity-in-lebanon
#6
REVIEW
Ali Bazarbachi, Ammar Zahreddine, Radwan Massoud, Jean Cheikh, Colette Hanna, Fadi Nasr, Miguel Abboud, Ahmad Ibrahim
Hematopoietic stem cell transplantation (HSCT) has been accessible to the population residing in Lebanon and surrounding countries since 1997. HSCT programs were developed in two major hospitals in Beirut: American University of Beirut Medical Center (AUBMC) and Makassed General Hospital. Mount Lebanon Hospital initiated an autologous HSCT activity later. Between 2012 and 2016, the HSCT activity in Lebanon reached a total of 897 transplants, among which 303 (33.8%) were allogeneic HSCT and 594 (66.2%) were autologous HSCT...
June 13, 2017: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/28641097/long-term-complications-after-hematopoietic-cell-transplantation
#7
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
#8
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/28641095/high-dose-chemotherapy-and-autologous-stem-cell-transplantation-in-relapsed-or-refractory-hodgkin-lymphoma-emerging-questions-newer-agents-and-changing-paradigm
#9
REVIEW
Saad Akhtar
Primary treatment for adult and pediatric patients with Hodgkin lymphoma (HL) using current multiagent anthracycline-based chemotherapy with or without radiation therapy will cure approximately >70% of the patients; >95% for early stage with a favorable risk profile and 70-75% with advanced stage and high risk features. Managing refractory and relapsed disease, however, remains a challenge. High dose chemotherapy (HDC) and autologous stem cell transplantation (auto-SCT) can salvage 40-70% of patients with relapsed or refractory HL...
June 13, 2017: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/28641094/emerging-concepts-in-cytomegalovirus-infection-following-hematopoietic-stem-cell-transplantation
#10
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/28640957/restoration-of-cutaneous-pigmentation-by-transplantation-to-mice-of-isogeneic-human-melanocytes-in-dermal-epidermal-engineered-skin-substitutes
#11
Steven T Boyce, Christopher M Lloyd, Mark C Kleiner, Viki B Swope, Zalfa Abdel-Malek, Dorothy M Supp
Autologous engineered skin substitutes (ESS) containing melanocytes (hM) may restore pigmentation, and photoprotection after grafting to full-thickness skin wounds. In the current study, normal hM were isolated from discard skin, propagated with or without tyrosinase inhibitors, cryopreserved, recovered into culture, and added to ESS (ESS-P) before transplantation. ESS-P were incubated in either UCMC160/161 or UCDM1 medium, scored for hM densities, and grafted to mice. The results showed that: sufficient hM can be propagated to expand donor tissue by 100-fold; incubation of hM in tyrosinase inhibitors reduced pigment levels but did not change hM recovery after cryopreservation; hM densities in ESS-P were greater after incubation in UCDM1 than UCMC160 medium; hM were localized to the dermal-epidermal junction of ESS-P; and UCDM1 medium promoted earlier pigment distribution and density...
June 22, 2017: Pigment Cell & Melanoma Research
https://www.readbyqxmd.com/read/28640894/characterization-and-analysis-of-long-non-coding-rna-lncrna-in-in-vitro-and-ex-vivo-derived-cardiac-progenitor-cells
#12
Baron Arnone, Jake Y Chen, Gangjian Qin
Recent advancements in cell-based therapies for the treatment of cardiovascular disease (CVD) show continuing promise for the use of transplanted stem and cardiac progenitor cells (CPCs) to promote cardiac restitution. However, a detailed understanding of the molecular mechanisms that control the development of these cells remains incomplete and is critical for optimizing their use in such therapy. Long non-coding (lnc) RNA has recently emerged as a crucial class of regulatory molecules involved in directing a variety of critical biological processes including development, homeostasis and disease...
2017: PloS One
https://www.readbyqxmd.com/read/28640792/alloimmunization-after-cryopreserved-arterial-allografts-in-a-patient-on-a-kidney-transplantation-waiting-list
#13
Cyril Garrouste, Eugenio Rosset, Fabienne Quainon, Julien Aniort, Anne Elisabeth Heng
No abstract text is available yet for this article.
July 2017: Transplantation
https://www.readbyqxmd.com/read/28640791/octogenarian-liver-grafts-reaching-centennial-age-after-transplantation
#14
Luis Carlos Jiménez-Romero, Oscar Caso Maestro, Félix Cambra Molero, Alejandro Manrique Municio, Jorge Calvo Pulido, Alberto Marcacuzco Quinto, Iago Justo Alonso
No abstract text is available yet for this article.
July 2017: Transplantation
https://www.readbyqxmd.com/read/28640790/microrna-155-deficiency-in-kupffer-cells-ameliorates-liver-ischemia-reperfusion-injury-in-mice
#15
Yakun Li, Dongxia Ma, Zhimin Wang, Jun Yang
BACKGROUND: MicroRNA-155 (miR-155) is known to be involved in autoimmune diseases, inflammation, and transplantation. However, its role in a warm hepatic ischemia-reperfusion (IR) model has not been fully elucidated. METHODS: Partial hepatic IR was performed in wild-type and miR-155-deficient mice treated with or without GdCl3, and then the serum transaminase concentration and histology were analyzed. Kupffer cells (KCs) were isolated from the liver after IR, and immunohistochemistry was used to evaluate activation and polarization...
July 2017: Transplantation
https://www.readbyqxmd.com/read/28640788/the-use-of-continuous-extended-criteria-graft-perfusion-will-lead-to-an-increase-in-transplantable-organs
#16
Dmitri Bezinover
No abstract text is available yet for this article.
July 2017: Transplantation
https://www.readbyqxmd.com/read/28638610/looking-for-the-needle-in-the-kidney-transplantation-haystack
#17
Josep M Cruzado, Edoardo Melilli
The diagnosis of acute rejection still relies on renal allograft biopsy. In fact, histological features including C4d staining can be useful to differentiate cellular and antibody-mediated acute rejection. However, the pathogenic mechanism to define the type of rejection is usually assessed by anti-HLA donor specific antibodies (DSA) monitoring. Suspicion of acute rejection is usually based on renal function deterioration. This method has low sensitivity. Moreover, creatinine increase follows graft injury and therefore the diagnosis is performed when there is an ongoing acute rejection...
February 2017: Clinical Kidney Journal
https://www.readbyqxmd.com/read/28637347/mechanisms-underlying-the-long-term-survival-of-the-monocot-dracaena-marginata-under-drought-conditions
#18
Radek Jupa, Roman Plichta, Zuzana Paschová, Nadezhda Nadezhdina, Roman Gebauer
Efficient water management is essential for the survival of vascular plants under drought stress. While interrelations among drought stress, plant anatomy and physiological functions have been described in woody dicots, similar research is very limited for non-palm arborescent and shrubby monocots despite their generally high drought tolerance. In this study, potted transplants of Dracaena marginata Lam. in primary growth stage were exposed to several short- and long-term drought periods. Continuous measurements of sap flow and stem diameter, the evaluation of capacitance and leaf conductance, the quantification of non-structural carbohydrates (NSC), and organ-specific anatomical analyses were performed to reveal the mechanisms promoting plant resistance to limited soil moisture...
June 14, 2017: Tree Physiology
https://www.readbyqxmd.com/read/28637095/selective-cd28-blockade-results-in-superior-inhibition-of-donor-specific-t-follicular-helper-cell-and-antibody-responses-relative-to-ctla-4-ig
#19
I R Badell, G M La Muraglia, D Liu, M E Wagener, G Ding, M L Ford
Donor-specific antibodies (DSA) are a barrier to improved long-term outcomes following kidney transplantation. Costimulation blockade with CTLA-4-Ig has shown promise as a potential therapeutic strategy to control DSA. T follicular helper (Tfh) cells, a subset of CD4(+) T cells required for optimum antibody production, are reliant on the CD28 costimulatory pathway. We have previously shown that selective CD28 blockade leads to superior allograft survival through improved control of CD8(+) T cells relative to CTLA-4-Ig, but the impact of CD28-specific blockade on CD4(+) Tfh cells is unknown...
June 21, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28637093/intra-abdominal-cooling-system-limits-ischemia-reperfusion-injury-during-robot-assisted-renal-transplantation
#20
Raphael P H Meier, Vincent Piller, Monika E Hagen, Charles Joliat, Jean-Bernard Buchs, Antonio Nastasi, Raphael Ruttimann, Nicolas C Buchs, Solange Moll, Jean-Paul Vallée, François Lazeyras, Philippe Morel, Leo Bühler
Robot-assisted kidney transplantation is feasible; however, concerns have been raised about possible increases in warm ischemia times. We describe a novel intra-abdominal cooling system to continuously cool the kidney during the procedure. Porcine kidneys were procured by standard open technique. Groups were as follow: Robotic renal transplantation with (n=11) and without (n=6) continuous intra-abdominal cooling and conventional open technique with intermittent 4°C saline cooling (n=6). Renal cortex temperature, magnetic resonance imaging and histology were analyzed...
June 21, 2017: American Journal of Transplantation
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