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bone metabolism and transplant

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https://www.readbyqxmd.com/read/28540602/late-conversion-from-tacrolimus-to-a-belatacept-based-immuno-suppression-regime-in-kidney-transplant-recipients-improves-renal-function-acid-base-derangement-and-mineral-bone-metabolism
#1
Kevin Schulte, Clara Vollmer, Vera Klasen, Jan Hinrich Bräsen, Jodok Püchel, Christoph Borzikowsky, Ulrich Kunzendorf, Thorsten Feldkamp
BACKGROUND: Calcineurin inhibitor (CNI)-induced nephrotoxicity and chronic graft dysfunction with deteriorating glomerular filtration rate (GFR) are common problems of kidney transplant recipients. The aim of this study was to analyze the role of belatacept as a rescue therapy in these patients. METHODS: In this retrospective, observational study we investigated 20 patients (10 females, 10 males) who were switched from a CNI (tacrolimus) to a belatacept-based immunosuppression because of CNI intolerance or marginal transplant function...
May 24, 2017: Journal of Nephrology
https://www.readbyqxmd.com/read/28525352/evaluation-of-endocrine-and-metabolic-dysfunctions-after-hematopoietic-stem-cell-transplantation-in-children-a-study-from-turkey
#2
Dilek Gurlek Gokcebay, Fatih Azik, Cengiz Bayram, Arzu Yazal Erdem, Ali Fettah, Pamir Isik, Nese Yarali, Fatma Demirel, Bahattin Tunc, Namik Ozbek
BACKGROUND: Endocrine organs are highly susceptible to effects of high-dose chemotherapy. The objective of the study was to evaluate endocrine and metabolic complications after hematopoietic stem cell transplantation (HSCT) in children. METHODS: The patients who underwent HSCT in our center from April 2010 to October 2014 with at least 1 year follow-up were analyzed retrospectively. RESULTS: One-hundred children (M/F:59/41; mean age 8.9±4...
May 18, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/28497224/bone-density-microarchitecture-and-material-strength-in-chronic-kidney-disease-patients-at-the-time-of-kidney-transplantation
#3
M J Pérez-Sáez, S Herrera, D Prieto-Alhambra, L Vilaplana, X Nogués, M Vera, D Redondo-Pachón, M Mir, R Güerri, M Crespo, A Díez-Pérez, J Pascual
Bone health is assessed by bone mineral density (BMD). Other techniques such as trabecular bone score and microindentation could improve the risk of fracture's estimation. Our chronic kidney disease (CKD) patients presented worse bone health (density, microarchitecture, mechanical properties) than controls. More than BMD should be done to evaluate patients at risk of fracture. INTRODUCTION: BMD measured by dual-energy X-ray absorptiometry (DXA) is used to assess bone health in end-stage renal disease (ESRD) patients...
May 11, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28460645/statin-use-and-hip-fractures-in-u-s-kidney-transplant-recipients
#4
Chandan Vangala, Colin R Lenihan, Maria E Montez-Rath, Sumi Sukumaran Nair, Sankar D Navaneethan, Venkat Ramanathan, Wolfgang C Winkelmayer
BACKGROUND: Basic and translational research supports beneficial effects of statins on bone metabolism. Clinical studies suggest that statin use may reduce the risk of hip fractures in the general population. Whether statin use is associated with hip fracture risk in kidney transplant recipients, a particularly high-risk group for this outcome, is unknown. METHODS: From the U.S. Renal Data System (2007-2011), we identified all hip fracture events recorded in Medicare billing claims of first-time kidney transplant recipients...
May 1, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28451454/periodontitis-and-bone-metabolism-in-patients-with-advanced-heart-failure-and-after-heart-transplantation
#5
Ulrike Schulze-Späte, Iman Mizani, Kristina Rodriguez Salaverry, Jaime Chang, Christina Wu, Meaghan Jones, Peter J Kennel, Danielle L Brunjes, Tse-Hwei Choo, Tomoko S Kato, Donna Mancini, John Grbic, P Christian Schulze
AIMS: Heart failure (HF) is a multi-organ, pro-inflammatory syndrome that impairs bone metabolism. Pro-inflammatory cytokines and bone catabolism enhance periodontal disease, a local inflammatory, bacteria-induced disease that causes bone loss and periodontal soft tissue destruction. METHODS AND RESULTS: Medical and dental examinations were performed on patients with HF (n = 39), following heart transplantation (post-HTx, n = 38) and controls (n = 32). Blood, saliva, and gingival crevicular fluid were analysed for bone metabolism and inflammation markers...
May 2017: ESC Heart Failure
https://www.readbyqxmd.com/read/28445487/bmt-decreases-hfd-induced-weight-gain-associated-with-decreased-preadipocyte-number-and-insulin-secretion
#6
Saeed Katiraei, Lisa R Hoving, Lianne van Beek, Sharida Mohamedhoesein, Françoise Carlotti, Janna A van Diepen, Patrick C N Rensen, Mihai G Netea, Ko Willems van Dijk, Jimmy F P Berbée, Vanessa van Harmelen
Experimental bone marrow transplantation (BMT) in mice is commonly used to assess the role of immune cell-specific genes in various pathophysiological settings. The application of BMT in obesity research is hampered by the significant reduction in high-fat diet (HFD)-induced obesity. We set out to characterize metabolic tissues that may be affected by the BMT procedure and impair the HFD-induced response. Male C57BL/6 mice underwent syngeneic BMT using lethal irradiation. After a recovery period of 8 weeks they were fed a low-fat diet (LFD) or HFD for 16 weeks...
2017: PloS One
https://www.readbyqxmd.com/read/28439998/the-effects-of-chosen-plant-extracts-and-compounds-on-mesenchymal-stem-cells-a-bridge-between-molecular-nutrition-and-regenerative-medicine-concise-review
#7
REVIEW
Katarzyna Kornicka, Ievgeniia Kocherova, Krzysztof Marycz
Mesenchymal stem cells (MSC) stand as a promising tool in regenerative medicine because of their high therapeutic potential in treatment of degenerative, metabolic and other types of diseases. The cellular therapies involving MSCs include their isolation mainly from the bone marrow, adipose tissue or umbilical cord and in vitro expansion for further autologous or allogeneic transplantation. Recent studies revealed, that bioactive compounds, naturally occurring in seaweeds, herbs, fruits and vegetables, possess the ability to modulate self-renewal and differentiation potential of adult stem cells, targeting a broad range of intracellular signal transduction pathways...
April 25, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28439086/quality-and-freshness-of-human-bone-marrow-derived-mesenchymal-stem-cells-decrease-over-time-after-trypsinization-and-storage-in-phosphate-buffered-saline
#8
Tae Hwan Shin, Seungah Lee, Ki Ryung Choi, Da Yeon Lee, Yongman Kim, Man Jeong Paik, Chan Seo, Seok Kang, Moon Suk Jin, Tae Hyeon Yoo, Seong Ho Kang, Gwang Lee
Human bone marrow-derived mesenchymal stem cells (hBM-MSCs) have been studied for their therapeutic potential. However, evaluating the quality of hBM-MSCs before transplantation remains a challenge. We addressed this issue in the present study by investigating deformation, the expression of genes related to reactive oxygen species (ROS) generation, changes in amino acid profiles, and membrane fluidity in hBM-MSCs. Deformability and cell size were decreased after storage for 6 and 12 h, respectively, in phosphate-buffered saline...
April 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28429555/management-of-mineral-and-bone-disorders-in-renal-transplant-recipients
#9
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/28418012/cyp3a4-is-a-crosslink-between-vitamin-d-and-calcineurin-inhibitors-in-solid-organ-transplant-recipients-implications-for-bone-health
#10
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/28413871/comparison-of-the-gene-expression-profiles-of-human-hematopoietic-stem-cells-between-humans-and-a-humanized-xenograft-model
#11
COMPARATIVE STUDY
Hideyuki Matsuzawa, Hiromichi Matsushita, Takashi Yahata, Masayuki Tanaka, Kiyoshi Ando
The aim of this study is to evaluate the feasibility of NOD/Shi-scid-IL2Rγ(null)(NOG) mice transplanted with human CD34(+)/CD38(-)/Lin(-/low) hematopoietic cells from cord blood (CB) as an experimental model of the gene expression in human hematopoiesis. We compared the gene expressions of human CD34(+)/CD38(-)/Lin(-/low) cells from human bone marrow (BM) and in xenograft models. The microarray data revealed that 25 KEGG pathways were extracted from the comparison of human CD34(+)/CD38(-)/Lin(-/low) HSCs between CB and BM, and that 17 of them--which were mostly related to cellular survival, RNA metabolism and lymphoid development--were shared with the xenograft model...
April 20, 2017: Tokai Journal of Experimental and Clinical Medicine
https://www.readbyqxmd.com/read/28389253/role-of-genetic-polymorphism-of-aldh2-in-hematopoietic-stem-cell-transplantation
#12
Tomotaka Ugai, Yoshinobu Kanda, Yasuo Morishima, Keitaro Matsuo
Aldehyde dehydrogenase 2 (ALDH2) is involved in critically important biological processes, such as the metabolism of aldehydes and aldehyde-induced genotoxicity in hematopoietic stem cells. Given its role in these biological processes, we hypothesized that a functional ALDH2 polymorphism could affect transplantation outcomes after hematopoietic stem cell transplantation. Here, we analyzed the Japanese national registry data for 409 patients who underwent allogeneic bone marrow transplantation (BMT) from HLA-matched unrelated donors...
April 4, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28382618/effects-of-single-agent-bortezomib-as-post-transplant-consolidation-therapy-on-multiple-myeloma-related-bone-disease-a-randomized-phase-ii-study
#13
Orhan Sezer, Meral Beksac, Roman Hajek, Gülsan Sucak, Seckin Cagirgan, Werner Linkesch, Olga Meltem Akay, Zafer Gülbas, Hareth Nahi, Torben Plesner, John A Snowden, Ayşen Timurağaoğlu, Tobias Dechow, Alois Lang, Tülin Tuğlular, Johannes Drach, Gabriele Armbrecht, Anna Potamianou, Catherine Couturier, Robert A Olie, Caroline Feys, Nathalie Allietta, Evangelos Terpos
This phase II study explored the effects of bortezomib consolidation versus observation on myeloma-related bone disease in patients who had a partial response or better after frontline high-dose therapy and autologous stem cell transplantation. Patients were randomized to receive four 35-day cycles of bortezomib 1·6 mg/m(2) intravenously on days 1, 8, 15 and 22, or an equivalent observation period, and followed up for disease status/survival. The modified intent-to-treat population included 104 patients (51 bortezomib, 53 observation)...
April 6, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28368259/role-of-18-f-fdg-pet-ct-in-the-diagnosis-and-management-of-multiple-myeloma-and-other-plasma-cell-disorders-a-consensus-statement-by-the-international-myeloma-working-group
#14
REVIEW
Michele Cavo, Evangelos Terpos, Cristina Nanni, Philippe Moreau, Suzanne Lentzsch, Sonja Zweegman, Jens Hillengass, Monika Engelhardt, Saad Z Usmani, David H Vesole, Jesus San-Miguel, Shaji K Kumar, Paul G Richardson, Joseph R Mikhael, Fernando Leal da Costa, Meletios-Athanassios Dimopoulos, Chiara Zingaretti, Niels Abildgaard, Hartmut Goldschmidt, Robert Z Orlowski, Wee Joo Chng, Hermann Einsele, Sagar Lonial, Bart Barlogie, Kenneth C Anderson, S Vincent Rajkumar, Brian G M Durie, Elena Zamagni
The International Myeloma Working Group consensus aimed to provide recommendations for the optimal use of (18)fluorodeoxyglucose ((18)F-FDG) PET/CT in patients with multiple myeloma and other plasma cell disorders, including smouldering multiple myeloma and solitary plasmacytoma. (18)F-FDG PET/CT can be considered a valuable tool for the work-up of patients with both newly diagnosed and relapsed or refractory multiple myeloma because it assesses bone damage with relatively high sensitivity and specificity, and detects extramedullary sites of proliferating clonal plasma cells while providing important prognostic information...
April 2017: Lancet Oncology
https://www.readbyqxmd.com/read/28355970/clinical-impact-and-management-of-fluconazole-discontinuation-on-sirolimus-levels-in-bone-marrow-transplant-patients
#15
Edith Nwaroh, Jennifer Jupp, Esther Jadusingh, Gregory Guilcher
Sirolimus, an immunosuppressant, is indicated post-allogeneic stem cell transplant to reduce the risk of graft-versus-host-disease. Sirolimus is metabolized by cytochrome P450 3A4 and is a substrate of the P-glycoprotein (P-gp) drug efflux pump. Interactions with known inhibitors of the CYP3A4 enzyme and P-glycoprotein, such as fluconazole, are anticipated. Co-administration of fluconazole leads to an increase in sirolimus blood concentrations due to an inhibition of metabolism. The discontinuation of fluconazole will likely result in a decline in sirolimus blood concentrations, leaving patients at risk of graft-versus-host-disease...
January 1, 2017: Journal of Oncology Pharmacy Practice
https://www.readbyqxmd.com/read/28337956/acute-renal-graft-versus-host-disease-in-a-murine-model-of-allogeneic-bone-marrow-transplantation
#16
Peter M Schmid, Abdellatif Bouazzaoui, Karin Schmid, Christoph Birner, Christian Schach, Lars S Maier, Ernst Holler, Dierk H Endemann
Acute kidney injury (AKI) is a very common complication after allogeneic bone marrow transplantation (BMT) and associated with poor prognosis. Generally kidneys are assumed to be no direct target of Graft-versus-Host Disease (GvHD), and renal impairment is often attributed to several other factors occurring in the early phase after BMT. Our study aimed to prove the existence of renal GvHD in a fully MHC-mismatched model of BALB/c mice conditioned and transplanted according to two different intensity protocols...
March 23, 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28320485/mesenchymal-stem-cells-increase-expression-of-heme-oxygenase-1-leading-to-anti-inflammatory-activity-in-treatment-of-acute-liver-failure
#17
Zhi-Heng Zhang, Wei Zhu, Hao-Zhen Ren, Xin Zhao, Shuai Wang, Hu-Cheng Ma, Xiao-Lei Shi
BACKGROUND: Mesenchymal stem cells (MSCs) have been studied for the treatment of acute liver failure (ALF) for several years. MSCs may exert their effect via complex paracrine mechanisms. Heme oxygenase (HO) 1, a rate-limiting enzyme in heme metabolism, exerts a wide range of anti-inflammatory, anti-apoptotic and immunoregulatory effects in a variety of diseases. However, the relationship between MSCs and HO-1 in the treatment of ALF is still unclear. We investigated the preventive and therapeutic potential of intravenously administered BMSCs...
March 20, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28302033/effects-of-hyperlipidemia-and-cardiovascular-diseases-on-proliferation-differentiation-and-homing-of-mesenchymal-stem-cells
#18
Xin Ye, Chengfei Zhang
Various clinical studies have revealed that cardiovascular diseases (CVD) are associated with bone loss diseases such as osteoporosis and periodontitis, especially in older population. As one of the best-established risk factors of CVD, hyperlipidemia is also reported to interfere with the metabolism, function and regeneration of mineralized tissues. Derived from postnatal tissue reservoirs, mesenchymal stem cells (MSCs) are considered promising cell sources for mesenchymal and non-mesenchymal tissue regeneration based on their capacities for self-renewal and multi-lineage differentiation as well as potent immunosuppressive effects, secretion of cytokines and regulation of vascularization...
March 16, 2017: Current Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28281103/current-evidence-on-vitamin-d-deficiency-and-kidney-transplant-what-s-new
#19
REVIEW
Gerardo Sarno, Riccardo Nappi, Barbara Altieri, Giacomo Tirabassi, Emanuele Muscogiuri, Gianmaria Salvio, Stavroula A Paschou, Aristide Ferrara, Enrico Russo, Daniela Vicedomini, Cerbone Vincenzo, Andromachi Vryonidou, Silvia Della Casa, Giancarlo Balercia, Francesco Orio, Paride De Rosa
Kidney transplant is the treatment of choice for end-stage chronic kidney disease. Kidneys generate 1,25-dihydroxyvitamin D (calcitriol) from 25-hydroxyvitamin D (calcidiol) for circulation in the blood to regulate calcium levels. Transplant patients with low calcidiol levels have an increased risk of metabolic and endocrine problems, cardiovascular disease, type 2 diabetes mellitus, poor graft survival, bone disorders, cancer, and mortality rate. The recommended calcidiol level after transplant is at least 30 ng/mL (75 nmol/L), which could require 1000-3000 IU/d vitamin D3 to achieve...
March 9, 2017: Reviews in Endocrine & Metabolic Disorders
https://www.readbyqxmd.com/read/28252220/metabolic-oscillations-in-co-cultures-of-hepatocytes-and-mesenchymal-stem-cells-effects-of-seeding-arrangement-and-culture-mixing
#20
Dalia Abdelrahim Alzebdeh, Howard William Matthew
In vitro assembly of functional liver tissue is a prerequisite for the transplantation of tissue-engineered livers. There is an increasing demand for in vitro models that replicate complex events occurring in the liver. However, tissue engineering of implantable liver systems is currently limited by the difficulty of assembling three dimensional hepatocyte cultures of a useful size, while maintaining full cell viability. Recent reports have demonstrated that bone marrow mesenchymal stem cells (BM-MSCs) can provide a number of cues promoting hepatocyte growth and development...
March 2, 2017: Journal of Cellular Biochemistry
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