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https://www.readbyqxmd.com/read/28811932/two-novel-direct-spio-labels-and-in%C3%A2-vivo-mri-detection-of-labeled-cells-after-acute-myocardial-infarct
#1
Riikka M Korpi, Kirsi Alestalo, Timo Ruuska, Eveliina Lammentausta, Ronald Borra, Fredrik Yannopoulos, Siri Lehtonen, Jarkko T Korpi, Elisa Lappi-Blanco, Vesa Anttila, Petri Lehenkari, Tatu Juvonen, Roberto Blanco Sequieros
BACKGROUND: Acute myocardial infarction (AMI) is a leading cause of morbidity and mortality worldwide. Cellular decay due hypoxia requires rapid and validated methods for possible therapeutic cell transplantation. PURPOSE: To develop direct and rapid superparamagnetic iron oxide (SPIO) cell label for a large-animal model and to assess in vivo cell targeting by magnetic resonance imaging (MRI) in an experimental AMI model. MATERIAL AND METHODS: Bone marrow mononuclear cells (BMMNCs) were labeled with SPIO particles using two novel direct labeling methods (rotating incubation method and electroporation)...
August 2017: Acta Radiologica Open
https://www.readbyqxmd.com/read/28805792/immune-reconstitution-in-patients-with-acquired-severe-aplastic-anemia-after-haploidentical-stem-cell-transplantation
#2
X-Y Pei, X-Y Zhao, L-P Xu, Y Wang, X-H Zhang, Y-J Chang, X-J Huang
Immune recovery (IR) after haploidentical stem cell transplantation (haplo-SCT) in severe aplastic anemia (SAA) patients remains relatively unknown. In this study, we examined immune cell subset counts and immunoglobulins in 81 SAA patients from day 30 to day 365 after haplo-SCT. Simultaneously, we determined which factors influence IR and analyzed the effects of immune cell subsets on transplant outcomes. We found that: (i) The reconstitution of different immune cell subsets occurred at different rates after haplo-SCT...
August 14, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28802587/pre-transplant-infusion-of-donor-derived-dendritic-cells-maintained-at-the-immature-stage-by-sinomenine-increases-splenic-foxp3-tregs-in-recipient-rats-after-renal-allotransplantation
#3
Lian Li, Zhigang Luo, Zhe Song, Liwen Zheng, Tuo Chen
OBJECTIVE: The immunosuppressive mechanism of sinomenine in organ allotransplantation was investigated, especially its effect of blocking dendritic cell (DC) maturation, which might influence the frequency of regulatory T cells (Tregs). METHODS: Bone marrow cells from male donor Wistar rats were induced to differentiate into DCs in vitro in the presence or absence of sinomenine, and characterized by flow cytometry. These two groups of DCs were respectively injected into male recipient Sprague-Dawley rats via the tail vein, at both high and low doses...
August 9, 2017: Transplant Immunology
https://www.readbyqxmd.com/read/28798321/crispr-cas9-mediated-deletion-of-foxn1-in-nod-scid-il2rg-mice-results-in-severe-immunodeficiency
#4
Xinru Wei, Yunxin Lai, Baiheng Li, Le Qin, Youdi Xu, Simiao Lin, Suna Wang, Qiting Wu, Qiubin Liang, Guohua Huang, Qiuhua Deng, Pentao Liu, Donghai Wu, Liangxue Lai, Yao Yao, Peng Li
Immunodeficient mice engrafted with either normal or cancerous human cells are widely used in basic and translational research. In particular, NOD/SCID/IL2rg(-/-) mice can support the growth of various types of human cancer cells. However, the hairs of these mice interfere with the observation and imaging of engrafted tissues. Therefore, novel hairless strains exhibiting comparable immunodeficiency would be beneficial. Recently, the CRISPR/Cas9 system has been used for efficient multiplexed genome editing. In the present study, we generated a novel strain of nude NOD/SCID/IL2rg(-/-) (NSIN) mice by knocking out Foxn1 from NOD/SCID/IL2rg(-/-) (NSI) mice using the CRISPR/Cas9 system...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28792474/the-effects-of-selective-hematopoietic-expression-of-human-il-37-on-systemic-inflammation-and-atherosclerosis-in-ldlr-deficient-mice
#5
Geerte Hoeke, P Padmini S J Khedoe, Janna A van Diepen, Karin Pike-Overzet, Britt van de Ven, Nadia Vazirpanah, Isabel Mol, Pieter S Hiemstra, Frank J T Staal, Rinke Stienstra, Mihai G Netea, Charles A Dinarello, Patrick C N Rensen, Jimmy F P Berbée
The human cytokine interleukin (IL)-37 has potent anti-inflammatory capacities, and hematopoietic cell-specific transgenic overexpression of IL-37 in mice protects against septic shock and colitis. In the present study we investigated the effect of hematopoietic expression of IL-37 on atherosclerosis development under low-grade inflammatory conditions. Low-density lipoprotein receptor (LDLr)-deficient mice were lethally irradiated and transplanted with bone marrow from IL-37-transgenic or control wild-type mice and fed a Western-type diet (WTD; 1% cholesterol) for eight weeks...
August 9, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28783148/clinical-characteristics-and-outcome-of-human-herpesvirus-6-encephalitis-after-allogeneic-hematopoietic-stem-cell-transplantation
#6
M Ogata, K Oshima, T Ikebe, K Takano, H Kanamori, T Kondo, Y Ueda, T Mori, H Hashimoto, H Ogawa, T Eto, T Ueki, T Miyamoto, T Ichinohe, Y Atsuta, T Fukuda
In this retrospective analysis using the Transplant Registry Unified Management Program, we identified 145 patients with human herpesvirus (HHV)-6 encephalitis among 6593 recipients. The cumulative incidences of HHV-6 encephalitis at 100 days after transplantation in all patients, recipients of bone marrow or PBSCs and recipients of cord blood were 2.3%, 1.6% and 5.0%, respectively. Risk factors identified in multivariate analysis were male sex, type of transplanted cells (relative risk in cord blood transplantation, 11...
August 7, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28769930/anti-interleukin-6-promotes-allogeneic-bone-marrow-engraftment-and-prolonged-graft-survival-in-an-irradiation-free-murine-transplant-model
#7
Nicolas Granofszky, Andreas M Farkas, Moritz Muckenhuber, Benedikt Mahr, Lukas Unger, Svenja Maschke, Nina Pilat, Raimund Holly, Mario Wiletel, Heinz Regele, Thomas Wekerle
Transfer of recipient regulatory T cells (Tregs) induces mixed chimerism and tolerance in an irradiation-free bone marrow (BM) transplantation (BMT) model involving short-course co-stimulation blockade and mTOR inhibition. Boosting endogenous Tregs pharmacologically in vivo would be an attractive alternative avoiding the current limitations of performing adoptive cell therapy in the routine clinical setting. Interleukin-6 (IL-6) potently inhibits Treg differentiation and its blockade was shown to increase Treg numbers in vivo...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28767666/mismatch-repair-deficient-hematopoietic-stem-cells-are-preleukemic-stem-cells
#8
Yulan Qing, Stanton L Gerson
Whereas transformation events in hematopoietic malignancies may occur at different developmental stages, the initial mutation originates in hematopoietic stem cells (HSCs), creating a preleukemic stem cell (PLSC). Subsequent mutations at either stem cell or progenitor cell levels transform the PLSC into lymphoma/leukemia initiating cells (LIC). Thymic lymphomas have been thought to develop from developing thymocytes. T cell progenitors are generated from HSCs in the bone marrow (BM), but maturation and proliferation of T cells as well as T-lymphomagenesis depends on both regulatory mechanisms and microenvironment within the thymus...
2017: PloS One
https://www.readbyqxmd.com/read/28766890/inkt-cell-activation-plus-t-cell-transfer-establishes-complete-chimerism-in-a-murine-sublethal-bone-marrow-transplant-model
#9
Rumi Ishii, Toshihito Hirai, Satoshi Miyairi, Kazuya Omoto, Masayoshi Okumi, Yasuyuki Ishii, Kazunari Tanabe
Transplant tolerance induction makes it possible to preserve functional grafts for a lifetime without immunosuppressants. One powerful method is to generate mixed hematopoietic chimeras in recipients by adoptive transfer of donor-derived bone marrow cells (BMCs). In our murine transplantation model, we established a novel method for mixed chimera generation using sublethal irradiation, CD40-CD40L blockade, and invariant natural killer T-cell activation. However, numerous BMCs that are required to achieve stable chimerism makes it difficult to apply this model for human transplantation...
August 2, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28766543/-bone-marrow-involvement-in-primary-mediastinal-b-cell-lymphoma
#10
A U Magomedova, E A Fastova, A M Kovrigina, T N Obukhova, N I Skidan, Ya K Mangasarova, A I Vorobyev, S K Kravchenko
Primary mediastinal large B-cell lymphoma (PMBCL) is a distinct type of large B-cell lymphoma. In this type of the disease, the neoplastic process is located in the anterior and superior mediastinum, frequently with compression of the superior vena cava and with tumor invasion into the adjacent organs and tissues: the pericardium, lung, pleura, etc. Despite the fact that in PMBCL progression, there may be involvement of extranodal organs, such as the kidney, adrenal glands, liver, and central nervous system, bone marrow (BM) injury is generally absent...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/28766540/-leukemization-of-follicular-lymphoma-the-features-of-diagnostic-and-clinical-course-of-a-rare-form-of-the-disease
#11
E S Nesterova, S K Kravchenko, Ya K Mangasarova, L V Plastinina, V N Dvirnyk, A M Kovrigina, I A Shchupletsova, T N Obukhova, E G Gemdzhian, I A Vorobyev, A I Vorobyev
AIM: To characterize a group of patients with follicular lymphoma (FL) with leukemization and to evaluate the efficiency of different therapy options (R-CHOP/R-FMC/high-dose chemotherapy (HDCT)). SUBJECTS AND METHODS: 18 (7.2%) out of 250 patients diagnosed with FL, who were examined and treated at the National Research Center for Hematology, Ministry of Health of the Russian Federation, were found to have leukemic FL (tumor cells in the peripheral blood smears were detected by cytology and flow cytofluorometry...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/28766538/-prognostic-value-of-1q21-amplification-in-multiple-myeloma
#12
T V Abramova, T N Obukhova, L P Mendeleeva, O S Pokrovskaya, E O Gribanova, V V Ryzhko, L A Grebenyuk, M V Nareyko, M V Solovyev, O M Votyakova, S M Kulikov, M A Rusinov, V G Savchenko
AIM: To determine the prevalence of amp1q21 and its relationship to the clinical manifestations of multiple myeloma (MM). SUBJECTS AND METHODS: In December 2009 to March 2016, a total 134 patients aged 30 to 81 years (median 57 years) underwent a pretreatment FISH-study of bone marrow (BM) with centromeric and locus-specific DNA probes to identify amp1q21, t(11;14), t(4;14), t(14;16), t(14;20), t(6;14), trisomies of chromosomes 5, 9, 15, del13q14, del17p13/TP53, and t(8q24)/cMYC...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/28759025/diagnosis-and-severity-criteria-for-sinusoidal-obstruction-syndrome-veno-occlusive-disease-in-pediatric-patients-a-new-classification-from-the-european-society-for-blood-and-marrow-transplantation
#13
S Corbacioglu, E Carreras, M Ansari, A Balduzzi, S Cesaro, J-H Dalle, F Dignan, B Gibson, T Guengoer, B Gruhn, A Lankester, F Locatelli, A Pagliuca, C Peters, P G Richardson, A S Schulz, P Sedlacek, J Stein, K-W Sykora, J Toporski, E Trigoso, K Vetteranta, J Wachowiak, E Wallhult, R Wynn, I Yaniv, A Yesilipek, M Mohty, P Bader
The advances in hematopoietic cell transplantation (HCT) over the last decade have led to a transplant-related mortality below 15%. Hepatic sinusoidal obstruction syndrome/veno-occlusive disease (SOS/VOD) is a life-threatening complication of HCT that belongs to a group of diseases increasingly identified as transplant-related, systemic endothelial diseases. In most cases, SOS/VOD resolves within weeks; however, severe SOS/VOD results in multi-organ dysfunction/failure with a mortality rate >80%. A timely diagnosis of SOS/VOD is of critical importance, given the availability of therapeutic options with favorable tolerability...
July 31, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28747915/t-cell-lymphoma-and-leukemia-in-severe-combined-immunodeficiency-pigs-following-bone-marrow-transplantation-a-case-report
#14
Ellis J Powell, Jared Graham, N M Ellinwood, Jesse Hostetter, Michael Yaeger, Chak-Sum Ho, Lynden Gault, Veronica Norlin, Elizabeth N Snella, Jackie Jens, Emily H Waide, Adeline N Boettcher, Maureen Kerrigan, Raymond R R Rowland, Jason W Ross, Jack C M Dekkers, Christopher K Tuggle
After the discovery of naturally occurring severe combined immunodeficiency (SCID) within a selection line of pigs at Iowa State University, we found two causative mutations in the Artemis gene: haplotype 12 (ART12) and haplotype 16 (ART16). Bone marrow transplants (BMTs) were performed to create genetically SCID and phenotypically immunocompetent breeding animals to establish a SCID colony for further characterization and research utilization. Of nine original BMT transfer recipients, only four achieved successful engraftment...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28747912/acquired-senescent-t-cell-phenotype-correlates-with-clinical-severity-in-gata-binding-protein-2-deficient-patients
#15
Raquel Ruiz-García, Carmen Rodríguez-Vigil, Francisco Manuel Marco, Fernando Gallego-Bustos, María José Castro-Panete, Laura Diez-Alonso, Carlos Muñoz-Ruiz, Jesús Ruiz-Contreras, Estela Paz-Artal, Luis Ignacio González-Granado, Luis Miguel Allende
GATA binding protein 2 (GATA2) deficiency is a rare disorder of hematopoiesis, lymphatics, and immunity caused by spontaneous or autosomal dominant mutations in the GATA2 gene. Clinical manifestations range from neutropenia, lymphedema, deafness, to severe viral and mycobacterial infections, bone marrow failure, and acute myeloid leukemia. Patients also present with monocytopenia, dendritic cell, B- and natural killer (NK)-cell deficiency. We studied the T-cell and NK-cell compartments of four GATA2-deficient patients to assess if changes in these lymphocyte populations could be correlated with clinical phenotype...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28741344/anidulafungin-in-children-experience-in-a-tertiary-care-children-s-hospital-in-argentina
#16
María T Rosanova, Claudia Sarkis, Florencia Escarra, Carolina Epelbaum, Norma Sberna, Susana Carnovale, Carlos Figueroa, Rosa Bologna, Roberto Lede
The experience using anidulafungin for the treatment of invasive fungal infections in pediatrics is limited. In this article, we describe our experience in 55 children. Anidulafungin was administered intravenously at a loading dose of 3 mg/kg once daily, followed by 1.5 mg/kg every 24 hours over a mean period of 14 days (range: 7-22 days). Patients' median age was 114 months old (interquartile range: 32-168 months old). All patients had underlying diseases. Among patients with bone marrow transplant, the difference in white blood cell count, transaminase levels, and renal function at baseline and at the end of anidulafungin administration was not significant...
August 1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28738016/eomesodermin-promotes-the-development-of-type-1-regulatory-t-tr1-cells
#17
Ping Zhang, Jason S Lee, Kate H Gartlan, Iona S Schuster, Iain Comerford, Antiopi Varelias, Md Ashik Ullah, Slavica Vuckovic, Motoko Koyama, Rachel D Kuns, Kelly R Locke, Kirrilee J Beckett, Stuart D Olver, Luke D Samson, Marcela Montes de Oca, Fabian de Labastida Rivera, Andrew D Clouston, Gabrielle T Belz, Bruce R Blazar, Kelli P MacDonald, Shaun R McColl, Ranjeny Thomas, Christian R Engwerda, Mariapia A Degli-Esposti, Axel Kallies, Siok-Keen Tey, Geoffrey R Hill
Type 1 regulatory T (TR1) cells are Foxp3(-) interleukin-10 (IL-10)-producing CD4(+) T cells with potent immunosuppressive properties, but their requirements for lineage development have remained elusive. We show that TR1 cells constitute the most abundant regulatory population after allogeneic bone marrow transplantation (BMT), express the transcription factor Eomesodermin (Eomes), and are critical for the prevention of graft-versus-host disease. We demonstrate that Eomes is required for TR1 cell differentiation, during which it acts in concert with the transcription factor B lymphocyte-induced maturation protein-1 (Blimp-1) by transcriptionally activating IL-10 expression and repressing differentiation into other T helper cell lineages...
April 7, 2017: Science Immunology
https://www.readbyqxmd.com/read/28737775/fertility-preservation-issues-in-pediatric-hematopoietic-stem-cell-transplantation-practical-approaches-from-the-consensus-of-the-pediatric-diseases-working-party-of-the-ebmt-and-the-international-bfm-study-group
#18
A Balduzzi, J-H Dalle, K Jahnukainen, M von Wolff, G Lucchini, M Ifversen, K T Macklon, C Poirot, T Diesch, A Jarisch, D Bresters, I Yaniv, B Gibson, A M Willasch, R Fadini, L Ferrari, A Lawitschka, A Ahler, N Sänger, S Corbacioglu, M Ansari, R Moffat, A Dalissier, E Beohou, P Sedlacek, A Lankester, C D De Heredia Rubio, K Vettenranta, J Wachowiak, A Yesilipek, E Trigoso, T Klingebiel, C Peters, P Bader
Fertility preservation is an urgent challenge in the transplant setting. A panel of transplanters and fertility specialists within the Pediatric Diseases Working Party of the European Society for Blood and Marrow Transplantation (EBMT) and the International BFM Study Group provides specific guidelines. Patients and families should be informed of possible gender- and age-specific cryopreservation strategies that should be tailored according to the underlying disease, clinical condition and previous exposure to chemotherapy...
July 24, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28728493/treating-breast-cancer-with-cell-based-approaches-an-overview
#19
Susanna Gallo, Dario Sangiolo, Fabrizio Carnevale Schianca, Massimo Aglietta, Filippo Montemurro
Breast cancer is the most common malignancy in women. Despite there being considerable progress in the treatment of this disease, metastatic dissemination is still considered an incurable condition at the present time, causing 500,000 deaths worldwide every year. Although most of the research efforts have been focused on pharmacological approaches, over the last three decades, the use of bone marrow and peripheral blood-derived cell therapy approaches have been attempted and developed. Areas covered: This review will briefly address cell therapy for breast cancer, including autologous stem cell transplantations for overcoming the myelosuppressive effects of high-dose chemotherapy, allogeneic stem cell transplants and adoptive immunotherapy using bone-marrow derived T-cells...
July 20, 2017: Expert Opinion on Biological Therapy
https://www.readbyqxmd.com/read/28726516/targeting-nsg-mice-engrafting-cells-with-a-clinically-applicable-lentiviral-vector-corrects-osteoclasts-in-infantile-malignant-osteopetrosis
#20
Ilana Moscatelli, Henrik Löfvall, Christian Schneider Thudium, Michael Rothe, Carmen Montano, Zsuzsanna Kertész, Mehtap Sirin, Ansgar Schulz, Axel Schambach, Kim Henriksen, Johan Richter
Infantile malignant osteopetrosis (IMO) is a rare, lethal, autosomal recessive disorder characterized by nonfunctional osteoclasts. More than 50% of the patients have mutations in the TCIRG1 gene, encoding for a subunit of the osteoclast proton pump. The aim of this study was to develop a clinically applicable lentiviral vector expressing TCIRG1 to correct osteoclast function in IMO. We compared two mammalian promoters: elongation factor 1α short promoter (EFS) and chimeric myeloid promoter (ChimP). EFS was chosen for continued experiments as it performed better...
July 20, 2017: Human Gene Therapy
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