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https://www.readbyqxmd.com/read/28429555/management-of-mineral-and-bone-disorders-in-renal-transplant-recipients
#1
Matthew J Damasiewicz, Peter R Ebeling
The management of post-transplantation bone disease is a complex problem that remains under-appreciated in clinical practice. In these patients, pre-existing metabolic bone disorder is further impacted by the use of immunosuppressive medications (glucocorticoids and calcineurin-inhibitors), variable post-transplantation renal allograft function and post-transplantation diabetes mellitus. The treatment of post-transplantation bone loss should begin pre-transplantation. All patients active on transplant waiting lists should be screened for bone disease...
March 2017: Nephrology
https://www.readbyqxmd.com/read/28428651/utility-of-the-inspiratory-phase-in-high-resolution-computed-tomography-evaluations-of-pediatric-patients-with-bronchiolitis-obliterans-after-allogeneic-bone-marrow-transplant-reducing-patient-radiation-exposure
#2
Paulo Henrique Togni Filho, João Luiz Marin Casagrande, Henrique Manoel Lederman
OBJECTIVE: To evaluate the utility of the inspiratory phase in high-resolution computed tomography (HRCT) of the chest for the diagnosis of post-bone marrow transplantation bronchiolitis obliterans. MATERIALS AND METHODS: This was a retrospective, observational, cross-sectional study. We selected patients of either gender who underwent bone marrow transplantation and chest HRCT between March 1, 2002 and December 12, 2014. Ages ranged from 3 months to 20.7 years...
March 2017: Radiologia Brasileira
https://www.readbyqxmd.com/read/28427520/lymphoblastic-lymphoma
#3
REVIEW
Sergio Cortelazzo, Andrés Ferreri, Dieter Hoelzer, Maurilio Ponzoni
Lymphoblastic lymphoma (LBL) is a neoplasm of immature B cells committed to the B-(B-LBL) or T-cell lineage (T-LBL) that accounts for approximately 2% of all lymphomas. Although histological features are usually sufficient to distinguish lymphoblastic from mature B- or T-cell neoplasms, of greater importance for diagnosis is the characterization of immunophenotype by flow cytometry. LBL occurs more commonly in children than in adults, mostly in males. A bone marrow involvement <25% (or 20% according to WHO) formally distinguishes LBL from ALL...
May 2017: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/28425848/the-contribution-of-bone-marrow-derived-cells-to-the-human-adipocyte-pool
#4
Peter Arner, Mikael Rydén
White adipose tissue is a remarkably expandable organ with results in the last decade showing that human white adipocytes are continuously turned over during the entire life-span. Data primarily in murine models have demonstrated that adipocytes are derived from precursors present mainly in the perivascular areas of adipose tissue but their precise origin remains unclear. Subsets of cells present in bone marrow display a multipotent differentiation capacity which has prompted the hypothesis that bone marrow-derived cells (BMDCs) may also contribute to the adipocyte pool present in peripheral fat depots...
March 15, 2017: Adipocyte
https://www.readbyqxmd.com/read/28424584/hif-1%C3%AE-overexpression-improves-transplanted-bone-mesenchymal-stem-cells-survival-in-rat-mcao-stroke-model
#5
Bingke Lv, Feng Li, Jianbang Han, Jie Fang, Limin Xu, Chengmei Sun, Tian Hua, Zhongfei Zhang, Zhiming Feng, Xiaodan Jiang
Bone mesenchymal stem cells (BMSCs) death after transplantation is a serious obstacle impacting on the outcome of cell therapy for cerebral infarction. This study was aimed to investigate whether modification of BMSCs with hypoxia-inducible factor 1α (Hif-1α) could enhance the survival of the implanted BMSCs. BMSCs were isolated from Wistar rats, and were infected with Hif-1α-GFP lentiviral vector or Hif-1α siRNA. The modified BMSCs were exposed to oxygen-glucose deprivation (OGD) condition, cellular viability and apoptosis were then assessed...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28423506/granulocyte-colony-stimulating-factor-enhances-the-therapeutic-efficacy-of-bone-marrow-mesenchymal-stem-cell-transplantation-in-rats-with-experimental-acute-pancreatitis
#6
Bo Qu, Yanjie Chu, Fang Zhu, Beibei Wang, Ting Liu, Bo Yu, Shizhu Jin
INTRODUCTION: Acute pancreatitis (AP) is one of the most common diseases involving necrotic inflammation. Bone marrow mesenchymal stem cells (BMMSCs) have the potential of multi-directional differentiation and self-renewal for tissue repair. It remains less clear if granulocyte colony-stimulating factor (G-CSF) can improve the therapeutic effect of BMMSC transplant in AP. Therefore, we explored this issue in a rat model of experimental AP. RESULTS: Transplanted PKH26-positive BMMSCs were present in the injured pancreatic tissue, with some cells co-expressed pancreatic cellular markers, including Pax-4, Ngn3 and Nkx-6...
March 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28422925/dynamics-of-b-cell-recovery-following-kidney-bone-marrow-transplant-recipients
#7
Baoshan Gao, Yiming Gu, Chunshu Rong, Carolina Moore, Fabrice Porcheray, Waichi Wong, Frederic Preffer, Susan L Saidman, Yaowen Fu, Benedict Cosimi, David H Sachs, Tatsuo Kawai, Megan Sykes, Emmanuel Zorn
BACKGROUND: Previous studies identified B cell gene signatures and predominance of specific B cell subsets as a marker of operational tolerance following kidney transplantation. These findings suggested a role for B cells in the establishment or maintenance of tolerance. Here we analyzed B cell recovery in 4 subjects, 3 of whom achieved tolerance after combined kidney/bone marrow transplantation. METHODS: Peripheral B cell subsets were examined longitudinally by flow cytometry...
April 19, 2017: Transplantation
https://www.readbyqxmd.com/read/28421248/indications-for-cellular-migration-from-the-central-nervous-system-to-its-draining-lymph-nodes-in-cd11c-gfp-bone-marrow-chimeras-following-eae
#8
Fridtjof Schiefenhövel, Kerstin Immig, Carolin Prodinger, Ingo Bechmann
The concept as to how the brain maintains its immune privilege has initially been based on observations that it is lacking classical lymph vessels and later, the absence of dendritic cells (DC). This view has been challenged by several groups demonstrating drainage/migration of injected tracers and cells into cervical lymph nodes (CLNs) and the presence of brain antigens in CLNs in the course of various brain pathologies. Using CD11c-diphtheria toxin receptor (DTR)-green fluorescent protein (GFP) transgenic (tg) mice, we have shown the existence of CD11c(+) cells, a main DC marker, within the brain parenchyma...
April 18, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28421182/tgf-%C3%AE-1-pretreatment-improves-the-function-of-mesenchymal-stem-cells-in-the-wound-bed
#9
Deepraj Ghosh, Daniel J McGrail, Michelle R Dawson
The wound healing process initiates after injury to a tissue and involves a series of orchestrated events to minimize the invasion of foreign matters such as bacteria and efficiently regenerate the damaged tissue. A variety of cells must be recruited to the tissue during wound healing. However, this process is severely disrupted in patients suffering from chronic illness, including diabetes, leading to impaired healing or non-healing wounds. Current avenues of treatment include negative-pressure therapy, wound debridement, growth factor replacement, and cell-based therapies...
2017: Frontiers in Cell and Developmental Biology
https://www.readbyqxmd.com/read/28421151/extramedullary-relapse-in-a-cml-patient-after-allogeneic-stem-cell-transplantation
#10
Asu Fergun Yilmaz, Nur Soyer, Nazan Ozsan, Seckin Cagirgan, Ajda Gunes, Melda Comert, Fahri Sahin, Guray Saydam, Nur Selvi Gunel, Filiz Vural
Myeloid or granulocytic sarcoma (GS) is a tumoral lesion consisting of immature granulocytic cells. It is a rare entity during the course of CML patients especially after allogeneic stem cell transplantation (SCT). Relapse without bone marrow involvement is much rarer. We report a case of CML patient who relapsed with isolated granulocytic sarcoma after allogeneic SCT during cytogenetic and molecular remission. 28-year-old male was diagnosed as CML and allogeneic SCT was performed because of refractory disease to tyrosine kinase inhibitors...
2017: Case Reports in Hematology
https://www.readbyqxmd.com/read/28420441/autologous-bone-marrow-derived-cell-transplantation-in-decompensated-alcoholic-liver-disease-what-is-the-impact-on-liver-histology-and-gene-expression-patterns
#11
Nicolas Lanthier, Nathalie Lin-Marq, Laura Rubbia-Brandt, Sophie Clément, Nicolas Goossens, Laurent Spahr
BACKGROUND: Liver stem cell therapy (SCT) has been suggested as a promising means to improve liver regeneration in advanced liver disease. However, data from trials are heterogeneous, with no systematic histological evaluation. The aim of this study is to specifically analyze the effect of autologous SCT on liver regeneration and on gene expression changes. METHODS: Individuals in the randomized controlled trial of SCT in alcoholic hepatitis with paired liver biopsies were included (n = 58)...
April 18, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28420436/autophagy-mediates-the-beneficial-effect-of-hypoxic-preconditioning-on-bone-marrow-mesenchymal-stem-cells-for-the-therapy-of-myocardial-infarction
#12
Zheng Zhang, Chao Yang, Mingzhi Shen, Ming Yang, Zhitao Jin, Liping Ding, Wei Jiang, Junke Yang, Haixu Chen, Feng Cao, Taohong Hu
BACKGROUND: Stem cell therapy has emerged as a promising therapeutic strategy for myocardial infarction (MI). However, the poor viability of transplanted stem cells hampers their therapeutic efficacy. Hypoxic preconditioning (HPC) can effectively promote the survival of stem cells. The aim of this study was to investigate whether HPC improved the functional survival of bone marrow mesenchymal stem cells (BM-MSCs) and increased their cardiac protective effect. METHODS: BM-MSCs, isolated from Tg(Fluc-egfp) mice which constitutively express both firefly luciferase (Fluc) and enhanced green fluorescent protein (eGFP), were preconditioned with HPC (1% O2) for 12 h, 24 h, 36 h, and 48 h, respectively, followed by 24 h of hypoxia and serum deprivation (H/SD) injury...
April 18, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28420415/distribution-pattern-following-systemic-mesenchymal-stem-cell-injection-depends-on-the-age-of-the-recipient-and-neuronal-health
#13
Claire Fabian, Yahaira Naaldijk, Christiane Leovsky, Adiv A Johnson, Lukas Rudolph, Carsten Jaeger, Katrin Arnold, Alexandra Stolzing
BACKGROUND: Mesenchymal stem cells (MSCs) show therapeutic efficacy in many different age-related degenerative diseases, including Alzheimer's disease. Very little is currently known about whether or not aging impacts the transplantation efficiency of MSCs. METHODS: In this study, we investigated the distribution of intravenously transplanted syngeneic MSCs derived from young and aged mice into young, aged, and transgenic APP/PS1 Alzheimer's disease mice. MSCs from male donors were transplanted into female mice and their distribution pattern was monitored by PCR using Y-chromosome specific probes...
April 18, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28419808/outcomes-after-1-stage-versus-2-stage-revision-anterior-cruciate-ligament-reconstruction
#14
Justin J Mitchell, Jorge Chahla, Chase S Dean, Mark Cinque, Lauren M Matheny, Robert F LaPrade
BACKGROUND: Revision anterior cruciate ligament reconstruction (ACLR) is becoming increasingly common as the number of primary ACLR cases continues to rise. Despite this, there are limited data on the outcomes of revision ACLR and even less information specifically addressing the differences in 1-stage revision reconstruction versus those performed in a 2-stage fashion after primary reconstruction. PURPOSE: To compare the outcomes, patient satisfaction, and failure rates of 1-stage versus 2-stage revision ACLR...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28419513/genetic-recombination-between-stromal-and-cancer-cells-results-in-highly-malignant-cells-identified-by-color-coded-imaging-in-a-mouse-lymphoma-model
#15
Miki Nakamura, Atsushi Suetsugu, Kousuke Hasegawa, Takuro Matsumoto, Hitomi Aoki, Takahiro Kunisada, Masahito Shimizu, Shigetoyo Saji, Hisataka Moriwaki, Robert M Hoffman
The tumor microenvironment (TME) promotes tumor growth and metastasis. We previously established the color-coded EL4 lymphoma model with red fluorescent protein expressing EL4 implanted in transgenic C57BL/6 green fluorescent protein (GFP) mice. Color-coded imaging of the lymphoma tumor suggested an important role of stromal cells in lymphoma progression and metastasis. In the present study, we used color-coded imaging of RFP-lymphoma cells and GFP stromal cells to identify yellow-fluorescent recombinant cells appearing only during metastasis...
April 17, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28418012/cyp3a4-is-a-crosslink-between-vitamin-d-and-calcineurin-inhibitors-in-solid-organ-transplant-recipients-implications-for-bone-health
#16
REVIEW
A Prytuła, K Cransberg, A Raes
The use of calcineurin inhibitors (CNIs) and vitamin D deficiency may contribute to the pathogenesis of post-transplant bone disease. CNIs and 1,25-dihydroxyvitamin D₃ (1,25(OH)2D3) are substrates of the drug-metabolizing enzyme CYP3A4. This review summarizes the indications for the use of activated vitamin D analogs in post-transplant care and the current knowledge on the impact of CNIs on bone. We searched for clinical evidence of the interaction between CNIs and 1,25(OH)2D3. We also provide an overview of the literature on the interplay between vitamin D metabolism and CYP3A4 in experimental and clinical settings and discuss its possible implications for solid organ transplant recipients...
April 18, 2017: Pharmacogenomics Journal
https://www.readbyqxmd.com/read/28416577/normal-and-neoplastic-stem-cells
#17
Melissa N McCracken, Benson M George, Kevin S Kao, Kristopher D Marjon, Tal Raveh, Irving L Weissman
A stem cell is broadly defined as a cell that retains the capacity to self-renew, a feature that confers the ability to continuously make identical daughter cells or additional cells that will differentiate into downstream progeny. This highly regulated genetic program to retain "stemness" is under active investigation. Research in our laboratory has explored similarities and differences in embryonic, tissue-specific, and neoplastic stem cells and their terminally differentiated counterparts. In this review, we will focus on the contributions of our laboratory, in particular on the studies that identified the mouse hematopoietic stem cell (HSC) and the human leukemic stem cell...
April 17, 2017: Cold Spring Harbor Symposia on Quantitative Biology
https://www.readbyqxmd.com/read/28416360/primary-hepatic-angiosarcoma-and-liver-transplantation-radiological-surgical-histological-findings-and-clinical-outcome
#18
M Tran Minh, A Mazzola, F Perdigao, F Charlotte, G Rousseau, F Conti
Angiosarcoma is a rare type of soft tissue sarcoma that accounts for less than 1% of all sarcomas and only 2% of all primary hepatic tumours. Thorotrast, arsenic, and vinyl chloride monomer are frequently listed as occupational exposure risks. The estimated latency is long (10-40 years) in occupational cases and very long (60 years or more) in non-occupational cases. The symptoms and CT-scan appearance of hepatic angiosarcoma (HAS) are non-specific. We present a case of a 65-year-old Caucasian male with history of cryptogenic cirrhosis, low alpha-foetoprotein levels and a single, 4-cm nodule of potential atypical hepatocellular carcinoma (no washout at MRI and CT-scan) in segment VIII...
April 14, 2017: Clinics and Research in Hepatology and Gastroenterology
https://www.readbyqxmd.com/read/28416286/in%C3%A2-vivo-rnai-screen-unveils-ppar%C3%AE-as-a-regulator-of-hematopoietic-stem-cell-homeostasis
#19
Mathieu Sertorio, Wei Du, Surya Amarachintha, Andrew Wilson, Qishen Pang
Hematopoietic stem cell (HSC) defects can cause repopulating impairment leading to hematologic diseases. To target HSC deficiency in a disease setting, we exploited the repopulating defect of Fanconi anemia (FA) HSCs to conduct an in vivo short hairpin RNA (shRNA) screen. We exposed Fancd2(-/-) HSCs to a lentiviral shRNA library targeting 947 genes. We found enrichment of shRNAs targeting genes involved in the PPARγ pathway that has not been linked to HSC homeostasis. PPARγ inhibition by shRNA or chemical compounds significantly improves the repopulating ability of Fancd2(-/-) HSCs...
April 12, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28415959/the-practices-and-meanings-of-care-for-nurses-working-on-a-pediatric-bone-marrow-transplant-unit
#20
Caroline F Morrison, Edith J Morris
Bone marrow transplant (BMT) units are stressful work environments with high staff burnout, anxiety, and turnover. A qualitative study was undertaken to better understand care for nurses within the context of their clinical practice on a pediatric BMT unit. Understanding care practices for BMT nurses will allow us to design interventions and provide appropriate support for this subspecialty of nurses. Focus groups were held with 24 nurses as key participants, and 2 focus groups with general participants: unit management (N = 2) and caregivers of inpatients (N = 7)...
May 2017: Journal of Pediatric Oncology Nursing: Official Journal of the Association of Pediatric Oncology Nurses
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