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bone metabolism and transplant

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https://www.readbyqxmd.com/read/29451647/criopreserved-ovarian-tissue-transplantation-and-bone-restoration-metabolism-in-castrated-rats
#1
Lígia Helena Ferreira Melo E Silva, João Marcos DE Meneses E Silva, Mahmoud Salama, Luiz Gonzaga Porto Pinheiro, Franciele Osmarini Lunardi, Paulo Goberlânio Barros DA Silva, Carlos Gustavo Hirth, Igor Freitas DE Lucena, Glauco Jorge DA Costa Gomes, José Alberto Dias Leite
OBJECTIVES: to evaluate estradiol levels and autotransplantation heated ovarian tissue effects, after vitrification, on rats bone metabolism previously oophorectomized bilaterally. METHODS: experimental study with 27 rats aged 11 to 12 weeks and weighing 200g to 300g, submitted to bilateral oophorectomy and ovarian tissue cryopreservation for subsequent reimplantation. Animals were divided into two groups, A and B, with 8 and 19 rats, respectively. Autotransplantation occurred in two periods according to castration time: after one week, in group A, and after one month in group B...
2018: Revista do Colégio Brasileiro de Cirurgiões
https://www.readbyqxmd.com/read/29445008/blockade-of-host-%C3%AE-2-adrenergic-receptor-enhances-graft-versus-tumor-effect-through-modulating-apcs
#2
Hemn Mohammadpour, Rachel O'Neil, Jingxin Qiu, Philip L McCarthy, Elizabeth A Repasky, Xuefang Cao
Allogeneic hematopoietic cell transplantation is a potential curative therapy for hematologic malignancies. Host APCs are pivotal to the desired graft-versus-tumor (GVT) effect. Recent studies have shown that β2-adrenergic receptor (β2AR) signaling can have an important impact on immune cell function, including dendritic cells (DCs). In this article, we demonstrate that pretreatment of host mice with a β2AR blocker significantly increases the GVT effect of donor CD8 + T cells by decreasing tumor burden without increasing graft-versus-host disease...
February 14, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29433937/long-term-improvement-of-neurological-signs-and-metabolic-dysfunction-in-a-mouse-model-of-krabbe-s-disease-after-global-gene-therapy
#3
Michael S Marshall, Yazan Issa, Benas Jakubauskas, Monika Stoskute, Vince Elackattu, Jeffrey N Marshall, Wil Bogue, Duc Nguyen, Zane Hauck, Emily Rue, Subha Karumuthil-Melethil, Violeta Zaric, Maarten Bosland, Richard B van Breemen, Maria I Givogri, Steven J Gray, Stephen J Crocker, Ernesto R Bongarzone
We report a global adeno-associated virus (AAV)9-based gene therapy protocol to deliver therapeutic galactosylceramidase (GALC), a lysosomal enzyme that is deficient in Krabbe's disease. When globally administered via intrathecal, intracranial, and intravenous injections to newborn mice affected with GALC deficiency (twitcher mice), this approach largely surpassed prior published benchmarks of survival and metabolic correction, showing long-term protection of demyelination, neuroinflammation, and motor function...
January 17, 2018: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/29399329/intestinal-failure-a-review
#4
REVIEW
Philip Allan, Simon Lal
Intestinal failure (IF) is the inability of the gut to absorb necessary water, macronutrients (carbohydrate, protein, and fat), micronutrients, and electrolytes sufficient to sustain life and requiring intravenous supplementation or replacement. Acute IF (types 1 and 2) is the initial phase of the illness and may last for weeks to a few months, and chronic IF (type 3) from months to years. The challenge of caring for patients with IF is not merely the management of the underlying condition leading to IF or the correct provision of appropriate nutrition or both but also the prevention of complications, whether thromboembolic phenomenon (for example, venous occlusion), central venous catheter-related bloodstream infection, IF-associated liver disease, or metabolic bone disease...
2018: F1000Research
https://www.readbyqxmd.com/read/29386049/an-open-label-proof-of-concept-study-of-intrathecal-autologous-bone-marrow-mononuclear-cell-transplantation-in-intellectual-disability
#5
Alok Sharma, Hemangi Sane, Nandini Gokulchandran, Suhasini Pai, Pooja Kulkarni, Vaishali Ganwir, Maitree Maheshwari, Ridhima Sharma, Meenakshi Raichur, Samson Nivins, Prerna Badhe
BACKGROUND: The underlying pathophysiology in intellectual disability (ID) involves abnormalities in dendritic branching and connectivity of the neuronal network. This limits the ability of the brain to process information. Conceptually, cellular therapy through its neurorestorative and neuroregenerative properties can counteract these pathogenetic mechanisms and improve neuronal connectivity. This improved networking should exhibit as clinical efficacy in patients with ID. METHODS: To assess the safety and efficacy of cellular therapy in patients with ID, we conducted an open-label proof-of-concept study from October 2011 to December 2015...
January 31, 2018: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29377004/antagonism-of-ppar-%C3%AE-signaling-expands-human-hematopoietic-stem-and-progenitor-cells-by-enhancing-glycolysis
#6
Bin Guo, Xinxin Huang, Man Ryul Lee, Sang A Lee, Hal E Broxmeyer
Hematopoietic stem cells (HSCs) quiescently reside in bone marrow niches and have the capacity to self-renew or differentiate to form all of the blood cells throughout the lifespan of an animal. Allogeneic HSC transplantation is a life-saving treatment for malignant and nonmalignant disorders. HSCs isolated from umbilical cord blood (CB) are used for hematopoietic cell transplantation (HCT), but due to the limited numbers of HSCs in single units of umbilical CB, a number of methods have been proposed for ex vivo expansion of human HSCs...
January 29, 2018: Nature Medicine
https://www.readbyqxmd.com/read/29371326/leptin-deficient-obesity-prolongs-survival-in-a-murine-model-of-myelodysplastic-syndrome
#7
Michael J Kraakman, Helene L Kammoun, Dragana Dragoljevic, Annas Al-Sharea, Man K S Lee, Michelle C Flynn, Christian J Stolz, Andrew A Guirguis, Graeme I Lancaster, Jaye Chin-Dusting, David J Curtis, Andrew J Murphy
Obesity enhances the risk of developing myelodysplastic syndromes. However, the effect of obesity on survival is unclear. Obese people present with monocytosis due to inflammatory signals emanating from obese adipose tissue. We hypothesized that obesity-induced myelopoiesis would promote the transition of myelodysplastic syndrome to acute myeloid leukemia and accelerate mortality in obesity. Obese Ob/Ob mice or their lean littermate controls received a bone marrow transplant from NUP98-HOXD13 transgenic mice, a model of myelodysplastic syndrome...
January 25, 2018: Haematologica
https://www.readbyqxmd.com/read/29348535/umbilical-cord-extracts-improve-osteoporotic-abnormalities-of-bone-marrow-derived-mesenchymal-stem-cells-and-promote-their-therapeutic-effects-on-ovariectomised-rats
#8
Akira Saito, Kanna Nagaishi, Kousuke Iba, Yuka Mizue, Takako Chikenji, Miho Otani, Masako Nakano, Kazusa Oyama, Toshihiko Yamashita, Mineko Fujimiya
Bone marrow-derived mesenchymal stem cells (BM-MSCs) are the most valuable source of autologous cells for transplantation and tissue regeneration to treat osteoporosis. Although BM-MSCs are the primary cells responsible for maintaining bone metabolism and homeostasis, their regenerative ability may be attenuated in postmenopausal osteoporosis patients. Therefore, we first examined potential abnormalities of BM-MSCs in an oestrogen-deficient rat model constructed by ovariectomy (OVX-MSCs). Cell proliferation, mobilisation, and regulation of osteoclasts were downregulated in OVX-MSCs...
January 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29340322/paricalcitol-versus-calcifediol-for-treating-hyperparathyroidism-in-kidney-transplant-recipients
#9
Josep M Cruzado, Ricardo Lauzurica, Julio Pascual, Roberto Marcen, Francesc Moreso, Alex Gutierrez-Dalmau, Amado Andrés, Domingo Hernández, Armando Torres, Maria Isabel Beneyto, Edoardo Melilli, Anna Manonelles, Manuel Arias, Manuel Praga
Introduction: Secondary hyperparathyroidism (SHPT) and vitamin D deficiency are common at kidney transplantation and are associated with some early and late complications. This study was designed to evaluate whether paricalcitol was more effective than nutritional vitamin D for controlling SHPT in de novo kidney allograft recipients. Methods: This was a 6-month, investigator-initiated, multicenter, open-label, randomized clinical trial. Patients with pretransplantation iPTH between 250 and 600 pg/ml and calcium <10 mg/dl were randomized to paricalcitol (PAR) or calcifediol (CAL)...
January 2018: KI Reports
https://www.readbyqxmd.com/read/29338022/bone-metabolism-dynamics-in-the-early-post-transplant-period-following-kidney-and-liver-transplantation
#10
Peter W Schreiber, Heike A Bischoff-Ferrari, Katia Boggian, Marco Bonani, Christian van Delden, Natalia Enriquez, Thomas Fehr, Christian Garzoni, Hans H Hirsch, Cédric Hirzel, Oriol Manuel, Pascal Meylan, Lanja Saleh, Maja Weisser, Nicolas J Mueller
Bone disease contributes to relevant morbidity after solid organ transplantation. Vitamin D has a crucial role for bone metabolism. Activation of vitamin D depends on the endocrine function of both, liver and kidney. Our study assessed key markers of bone metabolism at time of transplantation and 6 months after transplantation among 70 kidney and 70 liver recipients. In 70 kidney recipients 25-OH vitamin D levels did not differ significantly between peri-transplant (median 32.5nmol/l) and 6 months post-transplant (median 41...
2018: PloS One
https://www.readbyqxmd.com/read/29281950/kartogenin-enhanced-chondrogenesis-in-co-cultures-of-chondrocytes-and-bone-mesenchymal-stem-cells
#11
Chun Liu, Tao Li, Zhijian Yang, Deshuai Liu, Yun Li, Zhiyou Zhou, Qiqing Zhang
Articular cartilage has poor capability of regeneration due to the avascular surrounding and low metabolic activity. Kartogenin (KGN), an emerging nonprotein heterocyclic compound, was screened to stimulate chondrogenic differentiation of bone mesenchymal stem cells (BMSCs). Co-culturing BMSCs and chondrocytes was reported to overcome the shortcomings of forming fibroblastic and hypertrophic cartilages. In this study, KGN was incorporated into the Col-Tgel hydrogel to form a Gel/Cell/KGN complex which fabricated an appropriate microenvironment for effective cartilage regeneration of BMSCs and/or chondrocyte...
December 27, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/29238707/drug-repurposing-for-the-treatment-of-acute-myeloid-leukemia
#12
REVIEW
Vibeke Andresen, Bjørn T Gjertsen
Acute myeloid leukemia (AML) is a heterogeneous disease characterized by the accumulation of immature myeloid progenitor cells in the bone marrow, compromising of normal blood cell production and ultimately resulting in bone marrow failure. With a 20% overall survival rate at 5 years and 50% in the 18- to 65-year-old age group, new medicines are needed. It is proposed that development of repurposed drugs may be a part of the new therapy needed. AML is subdivided into recurrent molecular entities based on molecular genetics increasingly accessible for precision medicine...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/29230944/improved-insulin-sensitivity-appears-to-remain-for-a-mean-of-four-years-following-islet-cell-transplant-for-type-1-diabetes
#13
Brett Rydzon, Rebecca S Monson, Jose Oberholzer, Krista A Varady, Melena D Bellin, Kirstie K Danielson
BACKGROUND: Impaired insulin sensitivity (IS) predicts complications and mortality in type 1 diabetes (T1D). IS improves shortly after islet cell transplant for type 1 diabetes, yet long-term changes in IS, and associated factors such as patient characteristics, transplant factors, clinical management, and IS-related biomarkers are unknown. METHODS: Up to nine years (mean four) of longitudinal data were available on 22 adults (18 female) with T1D who received 1-3 transplants in Phase 1/2 or 3 clinical trials (2004-2014)...
December 12, 2017: Diabetes/metabolism Research and Reviews
https://www.readbyqxmd.com/read/29228600/non-invasive-in-vivo-molecular-imaging-of-intra-articularly-transplanted-immortalized-bone-marrow-stem-cells-for-osteoarthritis-treatment
#14
Bou-Yue Peng, Chi-Sheng Chiou, Navneet Kumar Dubey, Sung-Hsun Yu, Yue-Hua Deng, Feng-Chou Tsai, Han-Sun Chiang, Ying-Hua Shieh, Wei-Hong Chen, Win-Ping Deng
Pathophysiology of osteoarthritis (OA) is characterized by progressive loss of articular cartilage in the knee-joints. To impart regenerative ability in lowly metabolizing chondrocytes, the bone marrow stem cells (BMSCs) has recently been recognized as a superior alternative treatment for OA. However, study of primary BMSCs-mediated chondrogenesis is difficult due to progressive cellular aging and replicative senescence. To obtain a therapeutic cell population for OA, BMSCs were immortalized by human papilloma virus (HPV)-16 E6/E7 along with mCherry luciferase (mCL), a gene marker for non-invasive imaging, and designated as iBMSCs-mCL...
November 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/29214523/haematopoietic-stem-cell-transplantation-arrests-the-progression-of-neurodegenerative-disease-in-late-onset-tay-sachs-disease
#15
Karolina M Stepien, Su Han Lum, J Edmond Wraith, Christian J Hendriksz, Heather J Church, David Priestman, Frances M Platt, Simon Jones, Ana Jovanovic, Robert Wynn
Tay-Sachs disease is a rare metabolic disease caused by a deficiency of hexosaminidase A that leads to accumulation of GM2 gangliosides predominantly in neural tissue. Late-onset Tay-Sachs disease variant is associated with a higher level of residual HexA activity. Treatment options are limited, and there are a few described cases who have undergone haematopoietic stem cell transplantation (HSCT) with variable outcome.We describe a case of a 23-year-old male patient who presented with a long-standing tremor since 7 years of age...
December 7, 2017: JIMD Reports
https://www.readbyqxmd.com/read/29198627/analytic-morphomics-predict-outcomes-after-lung-transplantation
#16
Michael J Pienta, Peng Zhang, Brian A Derstine, Binu Enchakalody, William B Weir, Tyler Grenda, Rebecca Goulson, Rishindra M Reddy, Andrew C Chang, Stewart C Wang, Jules Lin
BACKGROUND: The purpose of this study was to identify morphomic factors on standard, pretransplantation computed tomography (CT) scans associated with outcomes after lung transplantation. METHODS: A retrospective review of 200 patients undergoing lung transplantation at a single institution from 2003 to 2014 was performed. CT scans obtained within 1 year before transplantation underwent morphomic analysis. Morphomic characteristics included lung, dorsal muscle group, bone, and subcutaneous and visceral fat area and density...
December 1, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29145251/renal-osteodystrophy-presenting-as-a-metabolic-superscan-on-f-18-fdg-pet-ct-a-case-report
#17
Ismaheel Lawal, Alfred Ankrah, Kehinde Ololade, Moshe Modiselle, Mike Sathekge
RATIONALE: F-18 Fluoro Deoxyglucose positron emission tomography and computed tomography (F-18 FDG PET/CT) is a useful modality in the evaluation of patients with malignancies. Increased incidence of lympho-proliferative disorders has been reported in individuals with long-standing end-stage renal disorders treated with renal replacement therapy. PATIENT CONCERNS: A 30-year-old male on peritoneal dialysis on account of end-stage renal disease. He had acute rejection of an earlier transplanted renal allograft...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29131150/neurologic-complications-after-allogeneic-hematopoietic-stem-cell-transplantation-risk-factors-and-impact
#18
M R Dowling, S Li, B R Dey, S L McAfee, H R Hock, T R Spitzer, Y-B Chen, K K Ballen
Neurologic complications (NCs) may be a significant source of morbidity and mortality after hematopoietic cell transplantation (HCT). We performed a retrospective study of 263 consecutive patients undergoing allogeneic HCT for hematological malignancies to determine the incidence, risk factors and clinical impact of NCs in the first 5 years after HCT. We determined the incidence of central nervous system (CNS) infection, intracranial hemorrhage, ischemic stroke, metabolic encephalopathy, posterior reversal encephalopathy syndrome, seizure and peripheral neuropathy...
November 13, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/29109103/hepatocyte-nuclear-factor-1a-deficiency-causes-hemolytic-anemia-in-mice-by-altering-erythrocyte-sphingolipid-homeostasis
#19
Karin von Wnuck Lipinski, Sarah Weske, Petra Keul, Susann Peters, Hideo A Baba, Gerd Heusch, Markus H Gräler, Bodo Levkau
The Hepatocyte Nuclear Factor (HNF) family regulates complex networks of metabolism and organ development. Human mutations in its prototypical member HNF1A cause maturity-onset of diabetes of the young (MODY) type 3. In this study, we identified an important role for HNF1A in the preservation of erythrocyte membrane integrity, calcium homeostasis and osmotic resistance through a yet unrecognized link of HNF1A to sphingolipid homeostasis. HNF1A(-/-) mice displayed microcytic hypochromic anemia with reticulocytosis that was partially compensated by avid extramedullary erythropoiesis at all erythroid stages in the spleen thereby excluding erythroid differentiation defects...
November 6, 2017: Blood
https://www.readbyqxmd.com/read/29108345/mri-based-evaluation-of-multiorgan-iron-overload-is-a-predictor-of-adverse-outcomes-in-pediatric-patients-undergoing-allogeneic-hematopoietic-stem-cell-transplantation
#20
Natalia Maximova, Massimo Gregori, Giulia Boz, Roberto Simeone, Davide Zanon, Giulia Schillani, Floriana Zennaro
The medical records of 44 pediatric patients who underwent allogeneic transplantation from 2011 to 2015 were retrospectively reviewed. Magnetic resonance imaging was used to measure iron concentrations in the liver, spleen, pancreas and bone. These patients were divided into two groups, 18 with non-elevated (< 100 μmol/g; Group 1) liver iron concentration before transplantation and 26 with elevated (> 100 μmol/g; Group 2) concentration . We compared transplant-related outcomes in the two groups. Iron overload was a negative prognostic risk factor for sinusoidal obstruction syndrome (OR = 17), osteoporosis (OR = 6...
October 3, 2017: Oncotarget
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