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https://www.readbyqxmd.com/read/28183349/hif-1%C3%AE-inhibitor-echinomycin-reduces-acute-graft-versus-host-disease-and-preserves-graft-versus-leukemia-effect
#1
Yushi Yao, Lei Wang, Jihao Zhou, Xinyou Zhang
BACKGROUND: Acute graft-versus-host disease (aGVHD) remains a major obstacle against favorable clinical outcomes following allogeneic hematopoietic stem cell transplantation (allo-HSCT). T helper cells including Th17 play key roles in aGVHD pathogenesis. Donor regulatory T cell (Tregs) adoptive therapy reduces aGVHD without weakening graft-versus-leukemia effect (GVL) in both mouse and human, although the purification and ex vivo expansion of Tregs in clinical scenarios remain costly and technically demanding...
February 10, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28168228/changes-in-the-first-pass-success-rate-with-the-glidescope-video-laryngoscope-and-direct-laryngoscope-a-ten-year-observational-study-in-two-academic-emergency-departments
#2
Joon Ki Lee, Hyunggu Kang, Hyuk Joong Choi
OBJECTIVE: The aim of this study was to assess the success rate of the GlideScope video laryngoscope (GVL) and direct laryngoscope (DL) over ten years in two academic emergency departments. METHODS: We used adult intubation data using DL and GVL collected from airway management registries at two academic emergency departments. We analyzed changes in first-pass success (FPS) rate by device and operator training level. We conducted a multivariate logistic regression analysis to predict the FPS according to time period...
December 2016: Clinical and Experimental Emergency Medicine
https://www.readbyqxmd.com/read/28161625/valorization-of-bamboo-by-%C3%AE-valerolactone-acid-water-to-produce-digestible-cellulose-degraded-sugars-and-lignin
#3
Shu-Xian Li, Ming-Fei Li, Ping Yu, Yong-Ming Fan, Jia-Nan Shou, Run-Cang Sun
A novel pretreatment process was developed to achieve valorization of bamboo components into digestible cellulose, degraded sugars and lignin. In this case, bamboo was pretreated with 60% γ-valerolactone (GVL)/40% water containing 0.05mol/L H2SO4, yielding solid fraction rich in cellulose. The resulting liquor was further treated with the addition of NaCl and ultrasound, resulting in water phase rich in degraded sugars and GVL phase containing lignin, which was easy to recover. Results showed that the enzymatic hydrolysis was enhanced by 6...
January 26, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28139337/graft-versus-leukemia-effect-with-a-wt1-specific-t-cell-response-induced-by-azacitidine-and-donor-lymphocyte-infusions-after-allogeneic-hematopoietic-stem-cell-transplantation
#4
Tatsunori Ishikawa, Nobuharu Fujii, Masahide Imada, Michinori Aoe, Yusuke Meguri, Tomoko Inomata, Hiromi Nakashima, Keiko Fujii, Shohei Yoshida, Hisakazu Nishimori, Ken-Ichi Matsuoka, Eisei Kondo, Yoshinobu Maeda, Mitsune Tanimoto
BACKGROUND: Azacitidine (Aza) and donor lymphocyte infusion (DLI) therapy has recently been reported as an effective salvage therapy for relapsed acute myeloid leukemia (AML) and myelodysplastic syndrome (MDS). Despite the high response rate and relatively long period of remission, most patients relapse again. The immunologic mechanism of the response and limited efficacy remain unknown. CASE REPORT: Aza + DLI therapy was performed for a patient with therapy-related MDS (t-MDS), who had relapsed after allogeneic peripheral blood stem cell transplantation...
January 27, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28105353/isolated-extramedullary-cutaneous-relapse-despite-concomitant-severe-graft-vs-host-disease-and-tissue-chimerism-analysis-in-a-patient-with-acute-lymphoblastic-leukemia-after-allogeneic-hematopoietic-stem-cell-transplantation-a-case-report
#5
Bulent Kantarcioglu, Huseyin Saffet Bekoz, Yeliz Duvarci Ogret, Asli Cakir, Demet Kivanc, Fatma Savran Oguz, Deniz Sargin
Allogeneic hematopoietic stem cell transplantation (allo-HSCT) is a potentially curative treatment option for patients with acute lymphoblastic leukemia (ALL). The curative potential of allo-HSCT for ALL is, in part, due to the graft-vs.-leukemia (GVL) effect, in addition to the intensive conditioning chemo-radiotherapy. However, relapse remains the major cause of treatment failure following allo-HSCT for ALL. In the allo-HSCT setting, testing for genetic markers of hematopoietic chimerism has become a part of the routine diagnostic program...
December 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28067665/selective-graft-versus-leukemia-depends-on-magnitude-and-diversity-of-the-alloreactive-t-cell-response
#6
Cornelis A M van Bergen, Simone A P van Luxemburg-Heijs, Liesbeth C de Wreede, Matthijs Eefting, Peter A von dem Borne, Peter van Balen, Mirjam H M Heemskerk, Arend Mulder, Fransiscus H J Claas, Marcelo A Navarrete, Wilhelmina M Honders, Caroline E Rutten, Hendrik Veelken, Inge Jedema, Constantijn J M Halkes, Marieke Griffioen, J H Frederik Falkenburg
Patients with leukemia who receive a T cell-depleted allogeneic stem cell graft followed by postponed donor lymphocyte infusion (DLI) can experience graft-versus-leukemia (GVL) reactivity, with a lower risk of graft-versus-host disease (GVHD). Here, we have investigated the magnitude, diversity, and specificity of alloreactive CD8 T cells in patients who developed GVL reactivity after DLI in the absence or presence of GVHD. We observed a lower magnitude and diversity of CD8 T cells for minor histocompatibility antigens (MiHAs) in patients with selective GVL reactivity without GVHD...
February 1, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/27982520/efficient-hydrogenation-of-biomass-oxoacids-to-lactones-by-using-nhc-iridium-coordination-polymers-as-solid-molecular-catalysts
#7
Yaoqi Liu, Zheming Sun, Changyu Huang, Tao Tu
A series of NHC-iridium coordination polymers have proven to be robust, efficient and recyclable solid molecular catalysts toward the hydrogenation of biomass levulinic acid (LA) to γ-valerolactone. Along with quantitative yields attained at 0.01 mol % catalyst loading under 50 atm of H2 , the solid molecular catalyst was readily recovered and reused for 12 runs without obvious loss of the selectivity and activity. Remarkably, up to 1.2×10(5)  TON, an unprecedented value could be achieved in this important transformation...
December 16, 2016: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/27941777/gvl-effects-in-t-prolymphocytic-leukemia-evidence-from-mrd-kinetics-and-tcr-repertoire-analyses
#8
L Sellner, M Brüggemann, M Schlitt, H Knecht, D Herrmann, T Reigl, A Krejci, V Bystry, N Darzentas, M Rieger, S Dietrich, T Luft, A D Ho, M Kneba, P Dreger
Allogeneic stem cell transplantation (alloSCT) is used for treating patients with T-prolymphocytic leukemia (T-PLL). However, direct evidence of GvL activity in T-PLL is lacking. We correlated minimal residual disease (MRD) kinetics with immune interventions and T-cell receptor (TCR) repertoire diversity alterations in patients after alloSCT for T-PLL. Longitudinal quantitative MRD monitoring was performed by clone-specific real-time PCR of TCR rearrangements (n=7), and TCR repertoire diversity assessment by next-generation sequencing (NGS; n=3) Although post-transplant immunomodulation (immunosuppression tapering or donor lymphocyte infusions) resulted in significant reduction (>1 log) of MRD levels in 7 of 10 occasions, durable MRD clearance was observed in only two patients...
December 12, 2016: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/27913172/efficient-catalytic-system-for-the-direct-transformation-of-lignocellulosic-biomass-to-furfural-and-5-hydroxymethylfurfural
#9
Luxin Zhang, Guoyun Xi, Jiaxin Zhang, Hongbing Yu, Xiaochang Wang
A feasible approach was developed for the co-production of 5-hydroxymethylfurfural (5-HMF) and furfural from corncob via a new porous polytriphenylamine-SO3H (SPTPA) solid acid catalyst in lactone solvents. XRD, SEM, XPS, N2 adsorption-desorption, elemental analysis, TG-DTA, acid-base titration and FTIR spectroscopy techniques were used to characterize the catalyst. This study demonstrates and optimizes the catalytic performance of SPTPA and solvent selection. SPTPA was found to exhibit superior catalytic ability in γ-valerolactone (GVL)...
January 2017: Bioresource Technology
https://www.readbyqxmd.com/read/27890259/how-important-is-nk-alloreactivity-and-kir-in-allogeneic-transplantation
#10
REVIEW
Brian C Shaffer, Katharine C Hsu
Relapse of acute myelogenous leukemia (AML) after allogeneic hematopoietic cell transplantation (allo HCT) is a major cause of death in transplant recipients. Efforts to control relapse by promoting donor T-cell alloreactivity, such as withdrawal of immune suppression or donor lymphocyte infusions, are limited by the propensity to induce graft versus host disease (GVHD) and by inadequate efficacy. Therefore, options for AML patients who have relapsed AML after allo HCT are few and outcomes are poor. Similar to T-cells, natural killer (NK) cells have potent anti-leukemia effector capacity, and yet unlike T-cells, NK cells do not mediate GVHD...
December 2016: Best Practice & Research. Clinical Haematology
https://www.readbyqxmd.com/read/27881982/milestones-of-hematopoietic-stem-cell-transplantation-from-first-human-studies-to-current-developments
#11
REVIEW
Mateja Kralj Juric, Sakhila Ghimire, Justyna Ogonek, Eva M Weissinger, Ernst Holler, Jon J van Rood, Machteld Oudshoorn, Anne Dickinson, Hildegard T Greinix
Since the early beginnings, in the 1950s, hematopoietic stem cell transplantation (HSCT) has become an established curative treatment for an increasing number of patients with life-threatening hematological, oncological, hereditary, and immunological diseases. This has become possible due to worldwide efforts of preclinical and clinical research focusing on issues of transplant immunology, reduction of transplant-associated morbidity, and mortality and efficient malignant disease eradication. The latter has been accomplished by potent graft-versus-leukemia (GvL) effector cells contained in the stem cell graft...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27871543/soft-palate-trauma-induced-during-glidescope-intubation
#12
Joseph P Allencherril, Linda Joseph
The GlideScope (GVL; Saturn Biomedical Systems, Burnaby, British Columbia, Canada) is a rigid indirect video laryngoscope device that facilitates exposure of the larynx for placement of the endotracheal tube. This blade also reduces the requirement for anterior displacement of the tongue. A unique feature is the acutely angled blade which provides an improved glottic view. Herein, we present 2 instances of soft palate trauma, a rare oropharyngeal complication linked to GlideScope use. In the first case, the GlideScope was used for pedagogical purposes for intubation in a knee surgery...
December 2016: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/27802969/ibrutinib-efficacy-and-tolerability-in-patients-with-relapsed-chronic-lymphocytic-leukemia-following-allogeneic-hct
#13
Christine E Ryan, Bita Sahaf, Aaron C Logan, Susan O'Brien, John C Byrd, Peter Hillmen, Jennifer R Brown, Martin J S Dyer, Anthony R Mato, Michael J Keating, Samantha Jaglowski, Fong Clow, Andrew R Rezvani, Lori Styles, Steven E Coutre, David B Miklos
Ibrutinib, a potent and irreversible small-molecule inhibitor of both Bruton's tyrosine kinase and interleukin-2 inducible kinase (ITK), has been used to treat relapsed/refractory chronic lymphocytic leukemia (CLL) with prolongation of progression-free and overall survival. Here, we present 27 patients with relapsed CLL following allogeneic hematopoietic cell transplant (HCT) who subsequently received ibrutinib salvage therapy. Sixteen of these patients were part of multi-institutional clinical trials and achieved an overall response rate of 87...
December 22, 2016: Blood
https://www.readbyqxmd.com/read/27797983/efficacy-of-various-types-of-laryngoscope-direct-pentax-airway-scope-and-glidescope-for-endotracheal-intubation-in-various-cervical-immobilisation-scenarios-a-randomised-cross-over-simulation-study
#14
Jong Won Kim, Kyeong Ryong Lee, Dae Young Hong, Kwang Je Baek, Young Hwan Lee, Sang O Park
OBJECTIVE: To compare the efficacy of direct laryngoscopy (DL), Pentax Airway Scope (PAWS) and GlideScope video laryngoscope (GVL) systems for endotracheal intubation (ETI) in various cervical immobilisation scenarios: manual in-line stabilisation (MILS), Philadelphia neck collar (PNC) (moderate limit of mouth opening) and Stifneck collar (SNC) (severe limit of mouth opening). DESIGN: Randomised cross-over simulation study. SETTING AND PARTICIPANTS: 35 physicians who had >30 successful ETI experiences at a tertiary hospital in Seoul, Korea...
October 24, 2016: BMJ Open
https://www.readbyqxmd.com/read/27795533/update-on-stem-cell-transplantation-for-acute-leukemias
#15
Shin Mineishi
The treatment strategies for acute leukemia are undergoing very rapid change. Particularly for last 10 years, due to the rapid development of molecular targeted therapy and cell/gene therapies, the role of HSCT in the treatment scheme of acute leukemia has been changing. In the author's view, these recent changes should secure the role of HSCT in the comprehensive treatment scheme of acute leukemia. By appropriately combining the new agents with HSCT, therapy for acute leukemia is anticipated to become more effective...
2016: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/27788764/haploidentical-cord-transplantation-the-best-of-both-worlds
#16
REVIEW
Koen van Besien, Richard Childs
Haploidentical (haplo)-cord transplantation combines infusion of an umbilical cord blood (UCB) unit with CD34-selected cells usually from human leukocyte antigen (HLA) mismatched donors. Initial rapid count recovery from the haplo-hematopoietic progenitors, is gradually replaced by durable engraftment from UCB progenitors. UCB grafts used for haplo-cord are smaller, but better matched than those required for single or double UCB stem cell transplant (SCT). More than 200 patients with hematological malignancies have been transplanted...
October 2016: Seminars in Hematology
https://www.readbyqxmd.com/read/27788763/haploidentical-transplants-using-ex-vivo-t-cell-depletion
#17
REVIEW
Massimo F Martelli, Franco Aversa
Allogeneic hematopoietic stem cell transplantation (HSCT) is the best post-remission therapy for patients with acute leukemia (AL) at high risk of relapse. Advantages of having a family member as donor include: no undue delay in obtaining the graft; choice of best donor with regards to natural killer (NK) alloreactivity and cytomegalovirus (CMV) status from a panel of candidate family members; easy access to post-transplant cellular therapies like donor lymphocyte infusions and opportunity for a second graft from the original donor, or another family member in case of graft failure...
October 2016: Seminars in Hematology
https://www.readbyqxmd.com/read/27784742/allogeneic-stem-cell-transplantation-a-historical-and-scientific-overview
#18
REVIEW
Anurag K Singh, Joseph P McGuirk
The field of hematopoietic stem cell transplant (HSCT) has made ground-breaking progress in the treatment of many malignant and nonmalignant conditions. It has also pioneered the concepts of stem cell therapy and immunotherapy as a tool against cancer. The success of transplant for hematologic malignancies derives both from the ability to treat patients with intensive chemoradiotherapy and from potent graft-versus-leukemia (GVL) effects mediated by donor immunity. Additionally, HSCT has been a curative therapy for several nonmalignant hematologic disorders through the provision of donor-derived hematopoiesis and immunity...
October 26, 2016: Cancer Research
https://www.readbyqxmd.com/read/27777140/unrelated-cord-blood-transplantation-for-acute-leukemia-diagnosed-in-the-first-year-of-life-outcomes-and-risk-factor-analysis
#19
Annalisa Ruggeri, Fernanda Volt, Franco Locatelli, Gerard Michel, Cristina Diaz de Heredia, Manuel Abecasis, Marco Zecca, Ajay Vora, Karima Yakouben, Tracey A O'Brien, Stefano Giardino, Jacqueline Cornish, Vanderson Rocha, Christina Peters, Peter Bader, Eliane Gluckman, Jean Hugues Dalle
Infant acute leukemia still has a poor prognosis, and allogeneic hematopoietic stem cell transplantation is indicated in selected patients. Umbilical cord blood (UCB) is an attractive cell source for this population because of the low risk of chronic graft-versus-host disease (GVHD), the strong graft-versus-leukemia effect, and prompt donor availability. This retrospective, registry-based study reported UCB transplantation (UCBT) outcomes in 252 children with acute lymphoblastic leukemia (ALL; n = 157) or acute myelogenous leukemia (AML; n = 95) diagnosed before 1 year of age who received a single-unit UCBT after myeloablative conditioning between 1996 and 2012 in European Society for Blood and Marrow Transplantation centers...
January 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/27740636/pre-transplant-donor-cd4-invariant-nkt-cell-expansion-capacity-predicts-the-occurrence-of-acute-graft-versus-host-disease
#20
M-T Rubio, M Bouillié, N Bouazza, T Coman, H Trebeden-Nègre, A Gomez, F Suarez, D Sibon, A Brignier, E Paubelle, S Nguyen-Khoc, M Cavazzana, O Lantz, M Mohty, S Urien, O Hermine
Clinically useful pre-transplant predictive factors of acute graft-versus-host-disease (aGVHD) after allogeneic hematopoietic stem cell transplantation (allo-SCT) are lacking. We prospectively analyzed HSC graft content in CD34(+), NK, conventional T, regulatory T and invariant NKT (iNKT) cells in 117 adult patients before allo-SCT. Results were correlated with occurrence of aGVHD and relapse. In univariate analysis, iNKT cells were the only graft cell populations associated with occurrence of aGVHD. In multivariate analysis, CD4(-) iNKT/T cell frequency could predict grade II-IV aGVHD in bone marrow and peripheral blood stem cell (PBSC) grafts, while CD4(-) iNKT expansion capacity was predictive in PBSC grafts...
October 14, 2016: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
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