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bone metabolism and transplant

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https://www.readbyqxmd.com/read/28078791/effects-of-stem-cell-transplantation-on-bone-mineral-density-and-vitamin-d-status-in-children-with-thalassemia-major
#1
Dilek Gürlek Gökçebay, Namik Ozbek, Arzu Yazal Erdem, Vildan Culha, Nese Yarali, Pamir Isik, Zekai Avci, Fatih Azik, Fatma Demirel, Bahattin Tunc
HSCT is a curative treatment in TM, but conditioning and immunosuppressive treatment may affect bone metabolism. In this retrospective study, we aimed to compare BMD, vitamin D status, and growth in children with TM who underwent HSCT to those in children with TD TM. Twenty-three children with TM who underwent HSCT (mean age 7.1 years [1.03-14.7]) and 24 children with TD thalassemia (mean age 9.8 years [1.6-14]) were recruited. Lumbar spine BMD of TD thalassemia patients was higher than those in patients who had HSCT at both baseline and second-year assessments (P=...
January 12, 2017: Pediatric Transplantation
https://www.readbyqxmd.com/read/28066800/cd36-deficiency-impairs-the-small-intestinal-barrier-and-induces-subclinical-inflammation-in-mice
#2
Vincenza Cifarelli, Stoyan Ivanov, Yan Xie, Ni-Huiping Son, Brian T Saunders, Terri A Pietka, Trevor M Shew, Jun Yoshino, Sinju Sundaresan, Nicholas O Davidson, Ira J Goldberg, Andrew E Gelman, Bernd H Zinselmeyer, Gwendalyn J Randolph, Nada A Abumrad
BACKGROUND & AIMS: CD36 has immuno-metabolic actions and is abundant in the small intestine on epithelial, endothelial and immune cells. We examined the role of CD36 in gut homeostasis using mice null for CD36 (CD36KO) and with CD36 deletion specific to enterocytes (Ent-CD36KO) or endothelial cells (EC-CD36KO). METHODS: Intestinal morphology was evaluated using immunohistochemistry and electron microscopy (EM). Intestinal inflammation was determined from neutrophil infiltration and expression of cytokines, toll-like receptors and COX-2...
January 2017: Cellular and Molecular Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28061861/oxidative-status-predicts-quality-in-human-mesenchymal-stem-cells
#3
Alessandro Bertolo, Simona Capossela, Gion Fränkl, Martin Baur, Tobias Pötzel, Jivko Stoyanov
BACKGROUND: Human bone marrow-derived mesenchymal stem cells (MSC) are adult progenitor cells with great potential for application in cell-based therapies. From a cell-based therapy perspective, there are two limitations to MSC use: (1) these therapies require large numbers of cells, and long-term expansion of MSC in vitro promotes replicative senescence; and (2) patient variability is a challenge for defining MSC quality standards for transplantation. This study aimed to determine whether low or high oxidative status of MSC correlate with changes in cell expansion and differentiation potentials...
January 6, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28044208/hepatic-vagus-nerve-regulates-kupffer-cell-activation-via-%C3%AE-7-nicotinic-acetylcholine-receptor-in-nonalcoholic-steatohepatitis
#4
Takahiro Nishio, Kojiro Taura, Keiko Iwaisako, Yukinori Koyama, Kazutaka Tanabe, Gen Yamamoto, Yukihiro Okuda, Yoshinobu Ikeno, Kenji Yoshino, Yosuke Kasai, Masayuki Okuno, Satoru Seo, Takaki Sakurai, Masataka Asagiri, Etsuro Hatano, Shinji Uemoto
BACKGROUND: Nonalcoholic fatty liver disease ranges from simple steatosis to nonalcoholic steatohepatitis (NASH). Kupffer cells play a central role in promoting hepatic inflammation, which leads to the development of NASH. We investigated the anti-inflammatory effect of hepatic vagus-mediated stimulation of the α7 nicotinic acetylcholine receptor (α7nAChR) on Kupffer cells in NASH pathogenesis. METHODS: Wild-type (WT) mice undergoing hepatic vagotomy (HV) were fed a methionine- and choline-deficient (MCD) diet for 1 week...
January 2, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28006991/efficacy-of-autologous-bone-marrow-derived-mesenchymal-stem-cells-and-mononuclear-cells-transplantation-in-type-2-diabetes-mellitus-a-randomized-placebo-controlled-comparative-study
#5
Shobhit Bhansali, Pinaki Dutta, Vinod Kumar, Mukesh Kumar Yadav, Ashish Jain, Sunder Mudaliar, Shipra Bhansali, R R Sharma, Vivekanand Jha, N Marwaha, N Khandelwal, Anand Srinivasan, Naresh Sachdeva, Meredith Hawkins, Anil Bhansali
Drugs targeting β-cells have provided new options in the management of T2DM; however, their role in β-cell regeneration remains elusive. The recent emergence of cell-based therapies like autologous bone marrow-derived mesenchymal stem cells (ABM-MSCs) and mononuclear cells (ABM-MNCs) seems to offer a pragmatic approach to augment β-cell function/mass. This study aims to examine the efficacy and safety of ABM-MSCs and ABM-MNCs transplantation in T2DM and explores the alterations in glucose-insulin homeostasis by metabolic studies...
December 23, 2016: Stem Cells and Development
https://www.readbyqxmd.com/read/27998642/bone-histomorphometry-in-de-novo-renal-transplant-recipients-indicates-a-further-decline-in%C3%A2-bone-resorption-1-year-posttransplantation
#6
Pieter Evenepoel, Geert J Behets, Liesbeth Viaene, Patrick C D'Haese
Renal transplantation is believed to have a major impact on bone health. The present prospective observational bone biopsy study aimed to define the natural history of bone histomorphometry parameters in contemporaneous de novo renal transplant recipients. Paired bone biopsies were performed at the time of transplantation and at one-year posttransplantation in an unselected cohort of 36 patients referred for deceased kidney replacement. Parameters of mineral metabolism and circulating bone turnover markers were monitored as well...
December 17, 2016: Kidney International
https://www.readbyqxmd.com/read/27990445/voriconazole-induced-periostitis-enthesopathy-in-solid-organ-transplant-patients-case-reports
#7
Monica Sircar, Camille Kotton, David Wojciechowski, Kassem Safa, Hannah Gilligan, Eliot Heher, Winfred Williams, Ravi Thadhani, Nina Tolkoff-Rubin
BACKGROUND: Voriconazole is frequently used to treat fungal infections in solid organ transplant patients. Recently, there have been reports suggesting that prolonged voriconazole therapy may lead to periostitis. AIM: Here we present two cases of voriconazole-induced periostitis in solid organ transplant patients. CASE PRESENTATION: Voriconazole was given to two transplant patients-one with a liver transplant and the second with a heart transplant, to treat their fungal infections...
November 2016: Journal of biosciences and medicines
https://www.readbyqxmd.com/read/27934558/fibroblast-growth-factor-23-in-postrenal-transplant-an-often-forgotten-hormone
#8
Fateme Shamekhi Amiri, Mohammad Reza Khatami
Fibroblast growth factor 23 is likely to be the most important regulator of phosphate homeostasis, which mediates its functions through fibroblast growth factor receptors and the coreceptor Klotho. In addition to reducing expression of the sodium-phosphate cotransporters NPT2a and NPT2c in the proximal tubules, fibroblast growth factor 23 inhibits renal 1α-hydroxylase and stimulates 24-hydroxylase and appears to reduce parathyroid hormone secretion in short-term studies. Fibroblast growth factor 23 synthesis and secretion by osteocytes and osteoblasts are upregulated through 1,25-dihydroxyvitamin D3 and through an increased dietary phosphate intake...
December 2016: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/27931083/the-therapeutic-potential-of-t-cell-metabolism
#9
REVIEW
A Zarrinpar, S J Bensinger
Transplant rejection mediated by the adaptive immune system remains a major barrier to achieving long-term tolerance and graft survival. Emerging evidence indicates that lymphocytes rapidly shift their metabolic programs in response to activation, co-stimulatory, and cytokine signals to support required effector cell differentiation and function. These observations have led to the hypothesis that manipulating the metabolic programs of immune cells could serve as a powerful therapeutic strategy for attenuating deleterious immune responses and facilitating durable tolerance in the setting of allogeneic solid organ or bone marrow transplant...
December 8, 2016: American Journal of Transplantation
https://www.readbyqxmd.com/read/27927037/clinical-hepatotoxicity-associated-with-antifungal-agents
#10
Ioannis Kyriakidis, Athanasios Tragiannidis, Silke Munchen, Andreas H Groll
Invasive fungal diseases (IFDs) are a leading cause of morbidity and mortality among immunocompromised patients with bone marrow failure syndromes, hematological malignancies, hematopoietic stem cell transplantation (HSCT), those admitted in intensive care units (ICUs) and those with prolonged febrile neutropenia. IFDs occur in a setting of multiple morbidities and are associated with case fatality rates between 30 and 70%. Along with the development of classes and compounds, the last two decades have seen substantial improvements in the prevention and management of these infections and an overall increased use of antifungal agents...
December 16, 2016: Expert Opinion on Drug Safety
https://www.readbyqxmd.com/read/27892944/veno-occlusive-disease-sinusoidal-obstruction-syndrome-after-haematopoietic-stem-cell-transplantation-middle-east-north-africa-regional-consensus-on-prevention-diagnosis-and-management
#11
A H Al Jefri, H Abujazar, A Al-Ahmari, A Al Rawas, Z Al Zahrani, A Alhejazi, M A Bekadja, A Ibrahim, M Lahoucine, S Ousia, A Bazarbachi
Veno-occlusive disease/sinusoidal obstruction syndrome (VOD/SOS) of the liver is a serious, early complication of haematopoietic stem cell transplantation (HSCT), severe and very severe forms of which are associated with a high mortality rate. A wide variety of patient, disease and treatment-related risk factors for VOD/SOS have been identified. Several bodies have published recommendations for the diagnosis, prevention and management of VOD/SOS following HSCT. A group of regional experts have developed a consensus statement on the diagnosis, prevention and management of VOD/SOS in the Middle East and North Africa region to help in the management of HSCT patients in the region...
November 28, 2016: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/27871893/clinical-effects-of-pre-transplant-serum-25-hydroxyvitamin-d-level-on-post-transplant-immunologic-and-non-immunologic-outcomes-in-kidney-transplant-recipients
#12
Tae Hyun Ban, Jeong Ho Kim, Han Beol Jang, Yoon Seo Lee, Bum Soon Choi, Cheol Whee Park, Chul Woo Yang, Yong-Soo Kim, Byung Ha Chung
BACKGROUND: The aim of this study was to investigate the effects of pre-transplant serum 25-hydroxyvitamin D (25(OH)D) level on non-immunologic and immunologic aspects of post-transplant clinical outcomes in kidney transplant recipients (KTRs). METHODS: We investigated 174 KTRs with low immunologic risk at baseline. We divided the patients into three groups according to baseline serum 25(OH)D level and compared the post-transplant clinical outcomes of acute rejection, infectious complications, and osteoporosis among the groups...
November 18, 2016: Transplant Immunology
https://www.readbyqxmd.com/read/27866993/micrornas-223-3p-and-93-5p-in-patients-with-chronic-kidney-disease-before-and-after-renal-transplantation
#13
M Ulbing, A H Kirsch, B Leber, S Lemesch, J Münzker, N Schweighofer, D Hofer, O Trummer, A R Rosenkranz, H Müller, K Eller, V Stadlbauer, B Obermayer-Pietsch
Chronic kidney disease (CKD) is associated with a multifactorial dysregulation of bone and vascular calcification and closely linked to increased cardiovascular mortality and concomitant bone disease. We aimed to investigate specific microRNA (miRNA) signatures in CKD patients to find indicators for vascular calcification and/or bone mineralization changes during CKD and after kidney transplantation (KT). A miRNA array was used to investigate serum miRNA profiles in CKD patients, then selected miRNAs were quantified in a validation cohort comprising 73 patients in CKD stages 3 to 5, 67 CKD patients after KT, and 36 healthy controls...
November 17, 2016: Bone
https://www.readbyqxmd.com/read/27795531/allogeneic-hematopoietic-stem-cell-transplantation-for-inherited-diseases
#14
Hiromasa Yabe
Allogeneic hematopoietic stem cell transplantation (HSCT) has been applied for the treatment of inherited bone marrow failure syndromes, inherited metabolic diseases, and primary immunodeficiencies. HSCT indications for some inherited disorders are still controversial because the effects on neurocognitive function have been found to be variable, according to pre-transplant conditions including the patient's age, disease severity, disease status, and donor availability. Moreover, utmost attention must be paid to determining the preparative regimen for preventing regimen-related toxicity because the genetic effect was found to be expressed not only in the hematopoietic stem cells themselves but also in systemic tissues...
2016: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/27788700/-progress-in-diagnosis-and-therapy-of-extrahepatic-manifestations-of-cholestatic-liver-diseases
#15
L G Lu
Extra-hepatic complications of cholestasis mainly include pruritus, fatigue and metabolic bone diseases, and their molecular mechanisms have not yet been fully identified so far. Though therapeutic regimens targeted at the pathogenesis alleviate the symptoms temporarily, the therapeutic effects are limited, and therefore expounding the pathogenesis will help find more appropriate therapeutic approaches. Pruritus may be caused by nerve conduction block resulting from accumulation of some substances in the accumulated bile, existing recommended methods like drug therapy with cholestyramine and blood purification can markedly alleviate cholestasis-induced pruritus...
August 20, 2016: Zhonghua Gan Zang Bing za Zhi, Zhonghua Ganzangbing Zazhi, Chinese Journal of Hepatology
https://www.readbyqxmd.com/read/27783217/lung-surfactant-metabolism-early-in-life-early-in-disease-and-target-in-cell-therapy
#16
REVIEW
Elena Lopez-Rodriguez, Gemma Gay-Jordi, Adele Mucci, Nico Lachmann, Anna Serrano-Mollar
Lung surfactant is a complex mixture of lipids and proteins lining the alveolar epithelium. At the air-liquid interface, surfactant lowers surface tension, avoiding alveolar collapse and reducing the work of breathing. The essential role of lung surfactant in breathing and therefore in life, is highlighted by surfactant deficiency in premature neonates, which causes neonatal respiratory distress syndrome and results in early death after birth. In addition, defects in surfactant metabolism alter lung homeostasis and lead to disease...
October 25, 2016: Cell and Tissue Research
https://www.readbyqxmd.com/read/27700966/epidemiology-of-fracture-in-adults-from-ontario-canada-with-chronic-kidney-disease-an-examination-of-fracture-burden-using-administrative-health-data
#17
Kyla L Naylor, Amit X Garg, S Joseph Kim, Gregory A Knoll
Fractures are associated with morbidity and mortality. Individuals with chronic kidney disease (CKD) experience bone mineral metabolism changes, which increases fracture risk. Researchers have quantified the epidemiology of fractures in adults with CKD using administrative health databases from Ontario, Canada, held at the Institute for Clinical Evaluative Sciences. Results demonstrated that many individuals with non-transplant CKD sustain fractures, with the risk increasing as kidney function declines. However, fracture risk in kidney transplant recipients was lower than previously described, which suggests recipients may not be a high-risk fracture group...
2016: Healthcare Quarterly
https://www.readbyqxmd.com/read/27670844/monocytic-mkp-1-is-a-sensor-of-the-metabolic-environment-and-regulates-function-and-phenotypic-fate-of-monocyte-derived-macrophages-in-atherosclerosis
#18
Hong Seok Kim, Sina Tavakoli, Leigh Ann Piefer, Huynh Nga Nguyen, Reto Asmis
Diabetes promotes the S-glutathionylation, inactivation and subsequent degradation of mitogen-activated protein kinase phosphatase 1 (MKP-1) in blood monocytes, and hematopoietic MKP-1-deficiency in atherosclerosis-prone mice accelerates atherosclerotic lesion formation, but the underlying mechanisms were not known. Our aim was to determine the mechanisms through which MKP-1 deficiency in monocytes and macrophages promotes atherogenesis. Transplantation of MKP-1-deficient bone marrow into LDL-R(-/-) (MKP-1LeuKO) mice accelerated high-fat diet (HFD)-induced atherosclerotic lesion formation...
September 27, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27648696/il-6-signal-from-the-bone-marrow-is-required-for-the-browning-of-white-adipose-tissue-post-burn-injury
#19
Abdikarim Abdullahi, Peter Chen, Mile Stanojcic, Ali-Reza Sadri, Natalie Coburn, Marc G Jeschke
The hypermetabolic stress response after burn contributes to multi-organ failure, sepsis, morbidity, and mortality. The cytokine interleukin 6 (IL-6) has been hypothesized to mediate not only white adipose tissue (WAT) browning in burns, but also other hypermetabolic conditions. In addition to its inflammatory effects, IL-6 also acts as a metabolic mediator that affects metabolic tissues. Therefore, we sought to uncover the origin of circulating IL-6 post burn injury that regulates WAT browning. WAT and sera samples were collected from both adult burn patients admitted to the Ross Tilley Burn Centre at Sunnybrook Hospital and mice subjected to a burn injury...
January 2017: Shock
https://www.readbyqxmd.com/read/27626495/nationwide-population-based-study-reveals-increased-malignancy-risk-in-taiwanese-liver-transplant-recipients
#20
Yung Fong Tsai, Hsiu Pin Chen, Fu Chao Liu, Shih Hao Liu, Chun Yu Chen, Chih Wen Cheng, Jr Rung Lin
Post-transplant malignancy is a major cause of late mortality for liver transplant recipients (LTRs). This nationwide population-based cohort study investigated the cancer type, incidence, and risk factors associated with post-transplant malignancies in 2938 Taiwanese LTRs who underwent transplantation between 1998 and 2012. Data from the National Health Insurance Research Database were extracted on the basis of the International Classification of Disease, Ninth Revision, Clinical Modification codes. Among these patients, 284 post-transplant malignancies were diagnosed...
September 10, 2016: Oncotarget
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