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Stem cell replacement

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https://www.readbyqxmd.com/read/28324469/stem-cells-in-cardiovascular-medicine-the-road-to-regenerative-therapies
#1
REVIEW
Christopher W Anderson, Nicole Boardman, Jiesi Luo, Jinkyu Park, Yibing Qyang
PURPOSE OF REVIEW: The purpose of this review is to provide a broad overview of current trends in stem cell research and its applications in cardiovascular medicine. Researches on different stem cell sources, their inherent characteristics, and the limitations they have in medical applications are discussed. Additionally, uses of stem cells for both modeling and treating cardiovascular disease are discussed, taking note of the obstacles these engineered interventions must overcome to be clinically viable...
April 2017: Current Cardiology Reports
https://www.readbyqxmd.com/read/28324039/unique-regenerative-mechanism-to-replace-bone-lost-during-dietary-bone-depletion-in-weanling-mice
#2
Matilda H-C Sheng, Kin-Hing William Lau, Ram Lakhan, Abu Shufian Ishtiaq Ahmed, Charles H Rundle, Patra Biswanath, David J Baylink
This study was undertaken to determine the mechanism whereby calcitropic hormones and mesenchymal stem cell progeny changes involved in bone repletion, a regenerative bone process that restores the bone lost to calcium deficiency. To initiate depletion, weanling mice with a mixed C57BL/6 (75%) and CD1 (25%) genetic background were fed a calcium-deficient diet (0.01%) for 14 days. For repletion, the mice were re-fed a control diet containing 1.2% calcium for 14 days. Depletion decreased plasma calcium and increased plasma PTH, 1,25(OH)2D, and CTX...
January 26, 2017: Endocrinology
https://www.readbyqxmd.com/read/28319561/pediatric-enteric-neuropathies-diagnosis-and-current-management
#3
Maggie L Westfal, Allan M Goldstein
PURPOSE OF REVIEW: Neurointestinal diseases are increasingly recognized as causes of significant gastrointestinal morbidity in children. This review highlights the most common pediatric enteric neuropathies and their diagnosis and management, emphasizing insights and discoveries from the most recent literature available. RECENT FINDINGS: The embryologic and histopathologic causes of enteric neuropathies are varied. They range from congenital aganglionosis in Hirschsprung disease, to autoimmune-mediated loss of neuronal subtypes in esophageal achalasia and Chagas disease, to degenerative neuropathies in some cases of chronic intestinal pseudo-obstruction and gastroparesis...
March 17, 2017: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/28317340/production-of-pancreatic-progenitor-cells-from-human-induced-pluripotent-stem-cells-using-a-three-dimensional-suspension-bioreactor-system
#4
Yuichiro Mihara, Katsuhisa Matsuura, Yoshihiro Sakamoto, Teruo Okano, Norihiro Kokudo, Tatsuya Shimizu
Islet replacement is a promising strategy for the treatment of patients with type 1 diabetes and patients who have undergone total pancreatectomy. Recent progress in cellular reprogramming technology may allow the transplantation of a patient's own pancreatic cells. Although many studies have reported the differentiation of pancreatic progenitor cells from mouse and human pluripotent stem cells (PSCs), obtaining sufficient cell numbers for clinical applications remains problematic. Here, we describe the mass production of human pancreatic progenitor cells from human induced (i)PSCs using a three-dimensional suspension bioreactor system...
March 20, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28315291/perspectives-of-stem-cell-based-therapy-for-age-related-retinal-degenerative-diseases
#5
Vladimir Holan, Barbora Hermankova, Jan Kossl
Retinal degenerative diseases, which include age-related macular degeneration, retinitis pigmentosa, diabetic retinopathy and glaucoma, mostly affect the elderly population, and are the most common cause of decreased quality of vision or even blindness. So far, there is no satisfactory treatment protocol to prevent, stop or cure these disorders. A great hope and promise for patients suffering from retinal diseases is represented by stem cell-based therapy which could replace diseased or missing retinal cells, and support regeneration...
March 17, 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28314976/enzyme-replacement-therapy-and-beyond-in-memoriam-roscoe-o-brady-m-d-1923-2016
#6
REVIEW
Markus Ries
Lysosomal storage disorders are strong candidates for the development of specific innovative therapies. The discovery of enzyme deficiencies is an important milestone in understanding the underlying cause of disease. Being able to replace the first missing enzyme in a lysosomal storage required three decades of dedicated research. Successful drug development for lysosomal storage disorders was fostered by the U.S. Orphan Drug Act. Various optimization strategies have the potential to overcome the current limitations of enzyme replacement therapies...
March 17, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/28306359/spinal-cord-injuries-how-could-cell-therapy-help
#7
Anna Badner, Ahad M Siddiqui, Michael G Fehlings
Spinal cord injury (SCI) is a devastating condition, where regenerative failure and cell loss lead to paralysis. The heterogeneous and time-sensitive pathophysiology has made it difficult to target tissue repair. Despite many medical advances, there are no effective regenerative therapies. As stem cells offer multi-targeted and environmentally responsive benefits, cell therapy is a promising treatment approach. Areas covered: This review highlights the cell therapies being investigated for SCI, including Schwann cells, olfactory ensheathing cells, mensenchymal stem/stromal cells, neural precursors, oligodendrocyte progenitors, embryonic stem cells, and induced pluripotent stem cells...
March 17, 2017: Expert Opinion on Biological Therapy
https://www.readbyqxmd.com/read/28303738/neural-stem-cell-transplantation-in-ischemic-stroke-a-role-for-preconditioning-and-cellular-engineering
#8
Joshua D Bernstock, Luca Peruzzotti-Jametti, Daniel Ye, Florian A Gessler, Dragan Maric, Nunzio Vicario, Yang-Ja Lee, Stefano Pluchino, John M Hallenbeck
Ischemic stroke continues to be a leading cause of morbidity and mortality throughout the world. To protect and/or repair the ischemic brain, a multitiered approach may be centered on neural stem cell (NSC) transplantation. Transplanted NSCs exert beneficial effects not only via structural replacement, but also via immunomodulatory and/or neurotrophic actions. Unfortunately, the clinical translation of such promising therapies remains elusive, in part due to their limited persistence/survivability within the hostile ischemic microenvironment...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28300264/integration-of-stem-cell-derived-exosomes-with-in-situ-hydrogel-glue-as-a-promising-tissue-patch-for-articular-cartilage-regeneration
#9
Xiaolin Liu, Yunlong Yang, Yan Li, Xin Niu, Bizeng Zhao, Yang Wang, Chunyan Bao, Zongping Xie, Qiuning Lin, Linyong Zhu
The regeneration of articular cartilage, which scarcely shows innate self-healing ability, is a great challenge in clinical treatment. Stem cell-derived exosomes (SC-Exos), an important type of extracellular nanovesicle, exhibit great potential for cartilage regeneration to replace stem cell-based therapy. Cartilage regeneration often takes a relatively long time and there is currently no effective administration method to durably retain exosomes at cartilage defect sites to effectively exert their reparative effect...
March 16, 2017: Nanoscale
https://www.readbyqxmd.com/read/28298334/erythropoietin-facilitates-definitive-endodermal-differentiation-of-mouse-embryonic-stem-cells-via-activation-of-erk-signaling
#10
Taku Kaitsuka, Kohei Kobayashi, Wakako Otsuka, Takuya Kubo, Farzana Hakim, Fan-Yan Wei, Nobuaki Shiraki, Shoen Kume, Kazuhito Tomizawa
Artificially generated pancreatic β-cells from pluripotent stem cells are expected for cell replacement therapy for type 1 diabetes. Several strategies are adopted to direct pluripotent stem cells toward pancreatic differentiation. However, a standard differentiation method for clinical application has not been established. It is important to develop more effective and safer methods for generating pancreatic β-cells without toxic or mutagenic chemicals. In the present study, we screened several endogenous factors involved in organ development to identify the factor, which induced the efficiency of pancreatic differentiation and found that treatment with erythropoietin (EPO) facilitated the differentiation of mouse embryonic stem cells (ESCs) into definitive endoderm...
March 15, 2017: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/28296144/aligned-poly-%C3%AE%C2%B5-caprolactone-nanofibers-guide-the-orientation-and-migration-of-human-pluripotent-stem-cell-derived-neurons-astrocytes-and-oligodendrocyte-precursor-cells-in-vitro
#11
Anu Hyysalo, Mervi Ristola, Tiina Joki, Mari Honkanen, Minnamari Vippola, Susanna Narkilahti
Stem cell transplantations for spinal cord injury (SCI) have been studied extensively for the past decade in order to replace the damaged tissue with human pluripotent stem cell (hPSC)-derived neural cells. Transplanted cells may, however, benefit from supporting and guiding structures or scaffolds in order to remain viable and integrate into the host tissue. Biomaterials can be used as supporting scaffolds, as they mimic the characteristics of the natural cellular environment. In this study, hPSC-derived neurons, astrocytes, and oligodendrocyte precursor cells (OPCs) are cultured on aligned poly(ε-caprolactone) nanofiber platforms, which guide cell orientation to resemble that of spinal cord in vivo...
March 15, 2017: Macromolecular Bioscience
https://www.readbyqxmd.com/read/28293550/dock-8-deficiency-ebv-lymphomatoid-granulomatosis-and-intrafamilial-variation-in-presentation
#12
Victoria R Dimitriades, Vincent Devlin, Stefania Pittaluga, Helen C Su, Steven M Holland, Wyndham Wilson, Kieron Dunleavy, Nirali N Shah, Alexandra F Freeman
Dedicator of cytokinesis 8 (DOCK8) deficiency is an autosomal recessive, combined immunodeficiency within the spectrum of hyper-IgE syndromes. Epstein-Barr virus-positive lymphomatoid granulomatosis (LYG) (EBV + LYG) is a rare diagnosis and a previously unreported presentation of DOCK8 deficiency. A 10-year-old girl was initially evaluated for mild eczema and recurrent sinopulmonary infections. She had normal immunoglobulins with elevated IgE, poor polysaccharide response with low switched memory B cells, low CD4 count, and normal mitogen and antigen responses...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28293177/mscs-derived-exosomes-and-neuroinflammation-neurogenesis-and-therapy-of-traumatic-brain-injury
#13
REVIEW
Yongxiang Yang, Yuqin Ye, Xinhong Su, Jun He, Wei Bai, Xiaosheng He
Exosomes are endosomal origin membrane-enclosed small vesicles (30-100 nm) that contain various molecular constituents including proteins, lipids, mRNAs and microRNAs. Accumulating studies demonstrated that exosomes initiated and regulated neuroinflammation, modified neurogenic niches and neurogenesis, and were even of potential significance in treating some neurological diseases. These tiny extracellular vesicles (EVs) can derive from some kinds of multipotent cells such as mesenchymal stem cells (MSCs) that have been confirmed to be a potentially promising therapy for traumatic brain injury (TBI) in experimental models and in preclinical studies...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28290981/case-report-of-clinical-vignette-osteopetrosis
#14
John B Moore, Thanh D Hoang, Alfred F Shwayhat
INTRODUCTION: Osteopetrosis is a connective tissue disorder resulting from abnormally dense bone predisposing patients to fracture. The clinical pattern of fractures across time and space as well as suggestive radiographic findings usually raises diagnostic suspicion. Multiple genetic mutations resulting in dysfunctional osteoclasts have been implicated in the pathogenesis of osteopetrosis with variable inheritance patterns. In severe cases, usually inherited in an autosomal recessive pattern, the medullary cavity important in the production of normal blood cell progenitors is replaced by defective endochondral bone, leading to pancytopenia and consequential extramedullary hematopoiesis...
March 2017: Military Medicine
https://www.readbyqxmd.com/read/28290605/transplantation-of-betatrophin-expressing-adipose-derived-mesenchymal-stem-cells-induces-%C3%AE-cell-proliferation-in-diabetic-mice
#15
Liang-Liang Sun, Tian-Jin Liu, Limei Li, Wei Tang, Jun-Jie Zou, Xiang-Fang Chen, Jiao-Yang Zheng, Bei-Ge Jiang, Yong-Quan Shi
Recent progress in regenerative medicine has suggested that mesenchymal stem cell (MSC)-based therapy is a novel potential cure for diabetes. Betatrophin is a newly identified hormone that can increase the production and expansion of insulin-secreting β-cells when administered to mice. In this study, we evaluated the effect of betatrophin overexpression by human adipose-derived MSCs (ADMSCs) by in vitro experiments, as well as following their transplantation into a mice with streptozotocin (STZ)-induced diabetes...
March 10, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28290190/disruption-in-bone-marrow-fat-may-attenuate-testosterone-action-on-muscle-size-after-spinal-cord-injury-a-case-report
#16
Ashraf S Gorgey, Pamela D Moore, Rodney C Wade, Ranjodh S Gill, Timothy Lavis, Robert A Adler
BACKGROUND: Mesenchymal stem cells can be differentiated into muscle satellite cells. Testosterone replacement therapy (TRT) promotes the differentiation of satellite cells into muscle cells. CASE REPORT: A 31 year old male with a T4 complete chronic spinal cord injury (SCI) had fixation for a mid-shaft fracture of the left femur. The participant received transdermal testosterone patches (4mg/day) daily for 16 weeks. Skeletal muscle and yellow bone marrow adiposity cross-sectional areas (CSAs) of both thighs were measured using magnetic resonance imaging...
March 13, 2017: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/28286868/a-basis-for-comparison-sensitive-authentication-of-stem-cell-derived-rpe-using-physiological-responses-of-intact-rpe-monolayers
#17
Kiyoharu J Miyagishima, Qin Wan, Sheldon S Miller, Kapil Bharti
The retinal pigment epithelium (RPE) is a monolayer of highly specialized cells that help maintain the chemical composition of its surrounding subretinal and choroidal extracellular spaces. Retinal cells (photoreceptors in particular), RPE, and choroidal endothelial cells together help ensure a homeostatically stable metabolic environment with exquisitely sensitive functional responses to light. Aging and disease of the RPE impairs its supportive functions contributing to the progressive loss of photoreceptors and vision...
2017: Stem Cell and Translational Investigation
https://www.readbyqxmd.com/read/28286525/mesenchymal-stem-and-progenitor-cells-in-regeneration-tissue-specificity-and-regenerative-potential
#18
REVIEW
Rokhsareh Rohban, Thomas Rudolf Pieber
It has always been an ambitious goal in medicine to repair or replace morbid tissues for regaining the organ functionality. This challenge has recently gained momentum through considerable progress in understanding the biological concept of the regenerative potential of stem cells. Routine therapeutic procedures are about to shift towards the use of biological and molecular armamentarium. The potential use of embryonic stem cells and invention of induced pluripotent stem cells raised hope for clinical regenerative purposes; however, the use of these interventions for regenerative therapy showed its dark side, as many health concerns and ethical issues arose in terms of using these cells in clinical applications...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28283844/long-term-survival-and-cardiopulmonary-outcome-in-children-with-hurler-syndrome-after-haematopoietic-stem-cell-transplantation
#19
Su Han Lum, Karolina M Stepien, Arunabha Ghosh, Alexander Broomfield, Heather Church, Jean Mercer, Simon Jones, Robert Wynn
Premature death in untreated children with Hurler syndrome (HS) in the first decade of life is largely due to life-threatening cardiopulmonary complications. We examined the long-term survival and cardiopulmonary outcome in 54 children undergoing haematopoietic stem cell transplantation (HSCT) at the Royal Manchester Children's Hospital from 1985 to 2008. The median age at first HSCT was 15.1 months. Eighteen had graft failure and nine died after first HSCT. Of 18 patients with graft failure, 17 underwent second HSCT and the remaining one was lost to follow-up (LOF)...
March 10, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/28279220/short-course-rapamycin-treatment-enables-engraftment-of-immunogenic-gene-engineered-bone-marrow-under-low-dose-irradiation-to-permit-long-term-immunological-tolerance
#20
Kunal H Bhatt, Rajeev Rudraraju, Jeremy F Brooks, Ji-Won Jung, Ryan Galea, James W Wells, Raymond J Steptoe
BACKGROUND: Application of genetically modified hematopoietic stem cells is increasingly mooted as a clinically relevant approach to protein replacement therapy, immune tolerance induction or conditions where both outcomes may be helpful. Hematopoietic stem and progenitor cell (HSPC)-mediated gene therapy often requires highly toxic pretransfer recipient conditioning to provide a 'niche' so that transferred HSPCs can engraft effectively and to prevent immune rejection of neoantigen-expressing engineered HSPCs...
March 9, 2017: Stem Cell Research & Therapy
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