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https://www.readbyqxmd.com/read/28636235/stem-cell-based-tooth-and-periodontal-regeneration
#1
Lei Hu, Yi Liu, Songlin Wang
Currently regeneration of tooth and periodontal damage still remains great challenge. Stem cell-based tissue engineering raised novel therapeutic strategies for tooth and periodontal repair. Stem cells for tooth and periodontal regeneration include dental pulp stem cells (DPSCs), periodontal ligament stem cells (PDLSCs), stem cells from the dental apical papilla (SCAPs), and stem cells from human exfoliated deciduous teeth (SHEDs), dental follicle stem cells (DFSCs), dental epithelial stem cells (DESCs), bone marrow mesenchymal stem cells (BMMSCs), adipose-derived stem cells (ADSCs), embryonic stem cells (ESCs) and induced pluripotent stem cells (iPSCs)...
June 21, 2017: Oral Diseases
https://www.readbyqxmd.com/read/28631813/high-fat-diet-attenuates-hyperglycemia-body-composition-changes-and-bone-loss-in-male-streptozotocin-induced-type-1-diabetic-mice
#2
Adriana Lelis Carvalho, Victoria E DeMambro, Anyonya R Guntur, Phuong Le, Kenichi Nagano, Roland Baron, Francisco José Albuquerque de Paula, Katherine J Motyl
There is a growing and alarming prevalence of obesity and the metabolic syndrome in type I diabetic patients (T1DM), particularly in adolescence. In general, low bone mass, higher fracture risk and increased marrow adipose tissue (MAT) are features of diabetic osteopathy in insulin deficient subjects. On the other hand, type 2 diabetes (T2DM) is associated with normal or high bone mass, a greater risk of peripheral fractures and no change in MAT. Therefore, we sought to determine the effect of weight gain on bone turnover in insulin deficient mice...
June 20, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28628602/procoagulant-activity-of-human-mesenchymal-stem-cells
#3
Barbara A Christy, Maryanne C Herzig, Robbie K Montgomery, Christopher Delavan, James A Bynum, Kristin M Reddoch, Andrew P Cap
BACKGROUND: Allogeneic mesenchymal stem cells (MSCs) show great potential for the treatment of military and civilian trauma based on their reduced immunogenicity and ability to modulate inflammation and immune function in the recipient. Although generally considered to be safe, MSCs express tissue factor (TF), a potent activator of coagulation. In the current study, we evaluated multiple MSC populations for tissue factor expression and procoagulant activity to characterize safety considerations for systemic use of MSCs in trauma patients who may have altered coagulation homeostasis...
July 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28626064/monitoring-c3ar-expression-using-a-floxed-tdtomato-c3ar-reporter-knock-in-mouse
#4
Katharina M Quell, Christian M Karsten, Anna Kordowski, Larissa Nogueira Almeida, Daria Briukhovetska, Anna V Wiese, Jing Sun, Fanny Ender, Konstantina Antoniou, Torsten Schröder, Inken Schmudde, Johann L Berger, Peter König, Tillman Vollbrandt, Yves Laumonnier, Jörg Köhl
C3a exerts multiple biologic functions through activation of its cognate C3a receptor. C3(-/-) and C3aR(-/-) mice have been instrumental in defining important roles of the C3a/C3aR axis in the regulation of acute and chronic inflammatory diseases, including ischemia/reperfusion injury, allergic asthma, autoimmune nephritis, and rheumatoid arthritis. Surprisingly little is known about C3aR expression and function in immune and stromal cells. To close this gap, we generated a floxed tandem-dye Tomato (tdTomato)-C3aR reporter knock-in mouse, which we used to monitor C3aR expression in cells residing in the lung, airways, lamina propria (LP) of the small intestine, brain, visceral adipose tissue, bone marrow (BM), spleen, and the circulation...
June 16, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28624865/bone-marrow-fat-contributes-to-insulin-sensitivity-and-adiponectin-secretion-in-premenopausal-women
#5
Federica Ermetici, Silvia Briganti, Alessandra Delnevo, Paola Cannaò, Giovanni Di Leo, Stefano Benedini, Ileana Terruzzi, Francesco Sardanelli, Livio Luzi
PURPOSE: Bone marrow fat is a functionally distinct adipose tissue that may contribute to systemic metabolism. This study aimed at evaluating a possible association between bone marrow fat and insulin sensitivity indices. METHODS: Fifty obese (n = 23) and non-obese (n = 27) premenopausal women underwent proton magnetic resonance spectroscopy to measure vertebral bone marrow fat content and unsaturation index at L4 level. Abdominal visceral, subcutaneous fat, and epicardial fat were also measured using magnetic resonance imaging...
June 17, 2017: Endocrine
https://www.readbyqxmd.com/read/28622604/tissue-engineered-hypertrophic-chondrocyte-grafts-enhanced-long-bone-repair
#6
Jonathan Bernhard, James Ferguson, Bernhard Rieder, Patrick Heimel, Thomas Nau, Stefan Tangl, Heinz Redl, Gordana Vunjak-Novakovic
Bone has innate ability to regenerate following injury. However, large and complex fractures exceed bone's natural repair capacity and result in non-unions, requiring external intervention to facilitate regeneration. One potential treatment solution, tissue-engineered bone grafts, has been dominated by recapitulating intramembranous ossification (bone formation by osteoblasts), although most serious bone injuries heal by endochondral ossification (bone formation by remodeling of hypertrophic cartilaginous anlage)...
September 2017: Biomaterials
https://www.readbyqxmd.com/read/28619045/human-adipose-derived-mesenchymal-stem-cells-alleviate-obliterative-bronchiolitis-in-a-murine-model-via-ido
#7
Guoping Zheng, Guanguan Qiu, Menghua Ge, Jianping He, Lanfang Huang, Ping Chen, Wei Wang, Qi Xu, Yaoqin Hu, Qiang Shu, Jianguo Xu
BACKGROUND: Long-term survival of lung transplantation is hindered by the development of obliterative bronchiolitis (OB). Adipose-derived stem cells (ASCs) were documented to have more potent immunosuppressive ability than mesenchymal stem cells (MSCs) from bone marrow and placenta. The goal of our study is to evaluate the effect of repeated administration of ASCs on OB and the involvement of indoleamine 2,3-dioxygenase (IDO) mediating the protective effect of ASCs in a heterotopic tracheal transplantation (HTT) model...
June 15, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28611729/editorial-bone-marrow-adipose-tissue-formation-function-and-impact-on-health-and-disease
#8
EDITORIAL
William P Cawthorn, Erica L Scheller
No abstract text is available yet for this article.
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28608812/quantification-of-bone-fatty-acid-metabolism-and-its-regulation-by-adipocyte-lipoprotein-lipase
#9
Alexander Bartelt, Till Koehne, Klaus Tödter, Rudolph Reimer, Brigitte Müller, Friederike Behler-Janbeck, Joerg Heeren, Ludger Scheja, Andreas Niemeier
Adipocytes are master regulators of energy homeostasis. Although the contributions of classical brown and white adipose tissue (BAT and WAT, respectively) to glucose and fatty acid metabolism are well characterized, the metabolic role of adipocytes in bone marrow remains largely unclear. Here, we quantify bone fatty acid metabolism and its contribution to systemic nutrient handling in mice. Whereas in parts of the skeleton the specific amount of nutrients taken-up from the circulation was lower than in other metabolically active tissues such as BAT or liver, the overall contribution of the skeleton as a whole organ was remarkable, placing it among the top organs involved in systemic glucose as well as fatty acid clearance...
June 13, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28607107/myeloid-sirtuin-6-deficiency-causes-insulin-resistance-in-high-fat-diet-fed-mice-by-eliciting-macrophage-polarization-toward-an-m1-phenotype
#10
Youngyi Lee, Sun-O Ka, Hye-Na Cha, Yu-Na Chae, Mi-Kyung Kim, So-Young Park, Eun Ju Bae, Byung-Hyun Park
Obesity-related insulin resistance is closely associated with macrophage accumulation and subsequent cytokine release in local tissues. Sirtuin (Sirt) 6 is known to exert an anti-inflammatory function but its role in macrophages in the context of obesity has not been investigated. Here, we generated myeloid-specific Sirt6 knockout mice (mS6KO) and investigated the metabolic characteristics after high-fat diet (HFD) feeding for 16 weeks. Compared with their wild type littermates, HFD-fed mS6KO mice exhibited greater increases in body weight, fasting blood glucose- and insulin-levels, hepatic steatosis, glucose intolerance, and insulin resistance...
June 12, 2017: Diabetes
https://www.readbyqxmd.com/read/28606271/-bone-marrow-derived-fibrocytes-and-thyroid-associated-opthalmopathy
#11
T Wu, D R Tang, F Y Sun
Thyroid-associated opthalmopathy(TAO) is a common autoimmune syndrome affecting the thyroid and orbit, which can result in the fibrosis of extraoular muscles and hyperplasia of adipose tissue. Advanced TAO patients could even lose vision caused by cornea ulcer and congestion of optic nerve from expansion of the extraocular muscles and orbit fat. Currently, there are no therapies shown to prevent it, because its cellular and molecular mechanisms are not clear. Some studies have recently implicated bone marrow-derived fibroblast-like, called fibrocytes are involved in the pathogenesis of TAO...
June 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28598385/the-roles-of-long-non-protein-coding-rnas-in-osteo-adipogenic-lineage-commitment
#12
REVIEW
Hirotaka Yoshioka, Yuji Yoshiko
Osteoblasts and adipocytes share a common mesenchymal progenitor in the bone marrow. This implies that a reciprocal relationship exists between osteogenic and adipogenic differentiation. Further, cells of osteoblast lineage transdifferentiate into adipocytes under some circumstances. Dysregulation of osteo-adipogenic fate-determination leads to bone diseases such as osteoporosis, accompanied by an increase in bone marrow adipose tissue. Thus, the fine-tuning of osteo-adipogenesis is necessary for bone homeostasis...
June 9, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28595566/a-systemic-review-of-the-sources-of-adult-mesenchymal-stem-cells-and-their-suitability-in-musculoskeletal-applications
#13
Rhiannon Nancarrow-Lei, Pouya Mafi, Reza Mafi, Wasim Khan
Background: Adult mesenchymal stem cells (MSCs) were first isolated from bone marrow by Friedenstein in 1976. These cells were clonogenic, non-haematopoietic, and able to replicate extensively in vitro. The fields of regenerative medicine and tissue engineering have grown dramatically since their inception. In the decades since, MSCs have been identified from mesoderm-, endoderm- and ectoderm-derived tissues. In light of our ageing population, the need for effective cell-based therapies for tissue repair and regeneration is ever-expanding...
June 8, 2017: Current Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28589660/simultaneous-quantification-of-bone-edema-adiposity-and-structure-in-inflamed-bone-using-chemical-shift-encoded-mri-in-spondyloarthritis
#14
Timothy J P Bray, Alan Bainbridge, Shonit Punwani, Yiannis Ioannou, Margaret A Hall-Craggs
PURPOSE: To evaluate proton density fat fraction (PDFF) and R2* as markers of bone marrow composition and structure in inflamed bone in patients with spondyloarthritis. METHODS: Phantoms containing fat, water, and trabecular bone were constructed with proton density fat fraction (PDFF) and bone mineral density (BMD) values matching those expected in healthy bone marrow and disease states, and scanned using chemical shift-encoded MRI (CSE-MRI) at 3T. Measured PDFF and R2* values in phantoms were compared with reference FF and BMD values...
June 6, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28585212/lipotoxicity-related-hematological-disorders-in-obesity
#15
Ibrahim Celalettin Haznedaroglu, Umit Yavuz Malkan
Lipotoxicity can mediate endothelial dysfunction in obesity. Altered endothelial cell phenotype during the pathobiological course of the lipotoxicity may lead to the hemostatic abnormalities, which is a hallmark of several hematological disorders. Impaired hemostasis could also be directly related to the numerous metabolic diseases such as hypertension, diabetes and atherosclerosis. On the other hand, local hematopoietic bone marrow (BM) renin-angiotensin system (RAS) contributes to the development of atherosclerosis via acting on the lipotoxicity processes...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28584815/from-human-mesenchymal-stem-cells-to-insulin-producing-cells-comparison-between-bone-marrow-and-adipose-tissue-derived-cells
#16
Mahmoud M Gabr, Mahmoud M Zakaria, Ayman F Refaie, Engy A Abdel-Rahman, Asmaa M Reda, Sameh S Ali, Sherry M Khater, Sylvia A Ashamallah, Amani M Ismail, Hossam El-Din A Ismail, Nagwa El-Badri, Mohamed A Ghoneim
The aim of this study is to compare human bone marrow-derived mesenchymal stem cells (BM-MSCs) and adipose tissue-derived mesenchymal stem cells (AT-MSCs), for their differentiation potentials to form insulin-producing cells. BM-MSCs were obtained during elective orthotopic surgery and AT-MSCs from fatty aspirates during elective cosmetics procedures. Following their expansion, cells were characterized by phenotyping, trilineage differentiation ability, and basal gene expression of pluripotency genes and for their metabolic characteristics...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28580233/connecting-bone-and-fat-the-potential-role-for-sclerostin
#17
Heather Fairfield, Clifford J Rosen, Michaela R Reagan
Sclerostin (SOST), a protein secreted from mature osteocytes in response to mechanical unloading and other stimuli, inhibits the osteogenic Wnt/β-catenin pathway in mesenchymal stem cells (MSCs) impeding their ability to differentiate into mineralizing osteoblasts. PURPOSE: This review summarizes the crosstalk between adipose tissue and bone. It also reviews the origin, regulation, and role of SOST in osteogenesis and brings attention to an emerging role of this protein in the regulation of adipogenesis...
June 2017: Current Molecular Biology Reports
https://www.readbyqxmd.com/read/28579235/haematopoietic-tlr4-deletion-attenuates-perivascular-brown-adipose-tissue-inflammation-in-atherosclerotic-mice
#18
Penghao Liu, Gaojian Huang, Zhiyong Cao, Qihai Xie, Tong Wei, Chenglin Huang, Qun Li, Mengwei Sun, Weili Shen, Pingjin Gao
AIMS: To investigate whether haematopoietic TLR4 deletion attenuates perivascular brown adipose tissue inflammation in atherosclerotic mice. METHODS AND RESULTS: Experiments were performed using irradiated LDL receptor-deficient (LDLR-/-) mice with marrow from either TLR4-deficient (TLR4-/-) or age-matched wild-type (WT) mice. After 12weeks of being fed a high-cholesterol diet, TLR4-/-→LDLR-/- mice developed fewer atherosclerotic lesions in the aorta compared to WT→LDLR-/- mice...
June 1, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28577302/ip6k1-reduces-mesenchymal-stem-stromal-cell-fitness-and-potentiates-high-fat-diet-induced-skeletal-involution
#19
Siddaraju V Boregowda, Sarbani Ghoshal, Cori N Booker, Veena Krishnappa, Anutosh Chakraborty, Donald G Phinney
Mesenchymal stem/stromal cells (MSCs) are the predominant source of bone and adipose tissue in adult bone marrow and play a critical role in skeletal homeostasis. Age-induced changes in bone marrow favor adipogenesis over osteogenesis leading to skeletal involution and increased marrow adiposity so pathways that prevent MSC aging are potential therapeutic targets for treating age-related bone diseases. Here, we show that inositol hexakisphosphate kinase 1 (Ip6k1) deletion in mice increases MSC yields from marrow and enhances cell growth and survival ex vivo...
June 2, 2017: Stem Cells
https://www.readbyqxmd.com/read/28575686/adipocytes-at-the-core-of-bone-function
#20
Gerald Grandl, Christian Wolfrum
Marrow adipose tissue (MAT) is a specialized adipose tissue with endocrine function found in bone marrow. In this issue of Cell Stem Cell, Ambrosi et al. (2017) identify a stem cell population in the bone marrow that can give rise to both osteogenic and adipogenic MAT precursors and is regulated by diet and aging and affects bone functionality.
June 1, 2017: Cell Stem Cell
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