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https://www.readbyqxmd.com/read/28102950/quantitative-impact-of-changes-in-marrow-cellularity-skeletal-size-and-bone-mineral-density-on-active-marrow-dosimetry-based-upon-a-reference-model
#1
Amy M Geyer, Bryan C Schwarz, Robert F Hobbs, George Sgouros, Wesley E Bolch
PURPOSE: The hematopoietically active tissues of skeletal bone marrow are a prime target for computational dosimetry given potential risks of leukemia and, at higher dose levels, acute marrow toxicity. The complex three-dimensional geometry of trabecular spongiosa, however, complicates schema for dose assessment in such a way that only a few reference skeletal models have been developed to date, and which are based upon microimaging of a limited number of cadaveric bone spongiosa cores...
January 2017: Medical Physics
https://www.readbyqxmd.com/read/28097053/in-vitro-effect-of-direct-current-electrical-stimulation-on-rat-mesenchymal-stem-cells
#2
Sahba Mobini, Liudmila Leppik, Vishnu Thottakkattumana Parameswaran, John Howard Barker
BACKGROUND: Electrical stimulation (ES) has been successfully used to treat bone defects clinically. Recently, both cellular and molecular approaches have demonstrated that ES can change cell behavior such as migration, proliferation and differentiation. METHODS: In the present study we exposed rat bone marrow- (BM-) and adipose tissue- (AT-) derived mesenchymal stem cells (MSCs) to direct current electrical stimulation (DC ES) and assessed temporal changes in osteogenic differentiation...
2017: PeerJ
https://www.readbyqxmd.com/read/28077355/no-evidence-for-the-use-of-stem-cell-therapy-for-tendon-disorders-a-systematic-review
#3
Haiko I M F L Pas, Maarten H Moen, Hidde J Haisma, Marinus Winters
INTRODUCTION: Stem cells have emerged as a new treatment option for tendon disorders. We systematically reviewed the current evidence for stem cell therapy in tendon disorders. METHODS: Randomised and non-randomised controlled trials, cohort studies and case series with a minimum of 5 cases were searched in MEDLINE, CENTRAL, EMBASE, CINAHL, PEDro and SPORTDiscus. In addition, we searched grey literature databases and trial registers. Only human studies were included and no time or language restrictions were applied to our search...
January 11, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28069536/m2-macrophages-infusion-ameliorates-obesity-and-insulin-resistance-by-remodeling-inflammatory-macrophages-homeostasis-in-obese-mice
#4
Qi Zhang, Haojie Hao, Zongyan Xie, Yu Cheng, Yaqi Yin, Min Xie, Hong Huang, Jieqing Gao, Hongyu Liu, Chuan Tong, Li Zang, Yiming Mu, Weidong Han
OBJECTIVE: The role of M2 macrophages infusion in dealing with obesity is still little known. In this study, the therapeutic effects of M2 macrophages infusion were investigated. METHODS: High fat diet (HFD) was used to induce obesity in C57BL/6N mice. 5 × 10(5) M2 macrophages, derived from the bone marrow, were injected into obese mice through the tail vein twice with an interval of one week. RESULTS: One week after the second injection, weight of inguinal adipose pad was significantly decreased...
January 6, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28063601/bone-marrow-fat-content-is-correlated-with-hepatic-fat-content-in-paediatric-non-alcoholic-fatty-liver-disease
#5
N Y Yu, T Wolfson, M S Middleton, G Hamilton, A Gamst, J E Angeles, J B Schwimmer, C B Sirlin
AIM: To investigate the relationship between bone marrow fat content and hepatic fat content in children with known or suspected non-alcoholic fatty liver disease (NAFLD). MATERIALS AND METHODS: This was an institutional review board-approved, Health Insurance Portability and Accountability Act (HIPAA)-compliant, cross-sectional, prospective analysis of data collected between October 2010 to March 2013 in 125 children with known or suspected NAFLD. Written informed consent was obtained for same-day research magnetic resonance imaging (MRI) of the lumbar spine, liver, and abdominal adiposity...
January 4, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28054934/evaluation-of-the-potential-of-chitosan-%C3%AE-1-3-glucan-ha-material-as-scaffold-for-living-bone-graft-production-i-in-vitro-i-by-comparison-of-adsc-and-bmdsc-behaviour-on-its-surface
#6
Agata Przekora, Marta Vandrovcova, Martina Travnickova, Julia Pajorova, Martin Molitor, Grazyna Ginalska, Lucie Bacakova
The opinion regarding the origin of adult stem cells that should be used for living bone construct generation is strongly divided in the scientific community. In this study, the potential of chitosan/β-1,3-glucan/HA material as scaffold for bone regeneration applications was evaluated by behaviour comparison of adult stem cells derived from both origins - adipose tissue (ADSCs) and bone marrow (BMDSCs). In the case of ADSC isolation, low and high negative pressures were applied during liposuction procedure in order to determine if negative pressure settings may have impact on subsequent cell behaviour <i>in vitro</i>...
January 5, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/28049638/leukemic-blasts-program-bone-marrow-adipocytes-to-generate-a-pro-tumoral-microenvironment
#7
Manar S Shafat, Thomas Oellerich, Sebastian Mohr, Stephen D Robinson, Dylan R Edwards, Christopher R Marlein, Rachel E Piddock, Matthew Fenech, Lyubov Zaitseva, Amina Abdul-Aziz, Jeremy Turner, Johnathan A Watkins, Matthew Lawes, Kristian M Bowles, Stuart A Rushworth
Despite currently available therapies most patients diagnosed with acute myeloid leukemia (AML) die of their disease. Tumor-host interactions are critical for the survival and proliferation of cancer cells; accordingly, we hypothesise that specific targeting of the tumor microenvironment may constitute an alternative or additional strategy to conventional tumor-directed chemotherapy. Since adipocytes have been shown to promote breast and prostate cancer proliferation, and because the bone marrow adipose tissue (MAT) accounts for up to 70% of bone marrow volume in adult humans, we examined the adipocyte-leukaemia cell interactions to determine if they are essential for the growth and survival of AML...
January 3, 2017: Blood
https://www.readbyqxmd.com/read/28047518/su-f-j-165-spectral-characterization-of-tissues-in-high-spectral-and-spatial-resolution-mr-images-in-vitro-implications-for-classification-based-synthetic-ct-algorithm
#8
A Diak, S Shea, M Surucu, S Gros, M Medved, G Karczmar, W Small, J Roeske
PURPOSE: To investigate features of spectral parameters of tissue for use in a synthetic CT algorithm. METHODS: A phantom of fresh beef leg embedded in 1% agarose gel was imaged at 1.5T on a Siemens Aero using HiSS MRI with 1.0mm resolution and 11.1Hz spectral resolution. Post-processing was performed off-line and included labeling of fat and water peaks, and fitting the spectra. All spectra were normalized by the noise within each voxel; thus all parameters are reported in units of signal-to-noise (SNR)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28043896/marrow-adipose-tissue-composition-in-adults-with-morbid-obesity
#9
Elaine W Yu, Logan Greenblatt, Alireza Eajazi, Martin Torriani, Miriam A Bredella
Patients with type 2 diabetes mellitus (T2DM) have increased fracture risk despite normal or increased bone mineral density (BMD). Elevations in marrow adipose tissue (MAT) and declines in MAT unsaturation are both associated with increased skeletal fragility. The objective of our study was to characterize the quantity and composition of MAT in adults with morbid obesity and T2DM, and to evaluate determinants of MAT. We studied 21 adults with morbid obesity prior to bariatric surgery, 8 of whom had T2DM. All subjects underwent 1H-MR spectroscopy of the lumbar spine and femur for assessment of MAT and dual-energy x-ray absorptiometry (DXA) and quantitative computed tomography (QCT) of the lumbar spine and hip for assessment of areal BMD (aBMD) and volumetric BMD (vBMD)...
December 30, 2016: Bone
https://www.readbyqxmd.com/read/28041853/stem-cells-in-male-sexual-dysfunction-are-we-getting-somewhere
#10
REVIEW
Mohammad Ayodhia Soebadi, Uros Milenkovic, Emmanuel Weyne, Fabio Castiglione, Maarten Albersen
INTRODUCTION: Stem cells for sexual disorders are steadily being introduced into clinical trials. Two conditions of importance are the main target for this line of treatment, especially when regarding the wide array of translational and basic science highlighting the potential advantages of regenerative therapy: erectile dysfunction (ED) and more recently Peyronie disease (PD). Cellular therapy offers a treatment modality that might reverse disease progression. It would be used in a curative setting, in contrast to other pharmaceutical agents that are currently available...
December 29, 2016: Sexual Medicine Reviews
https://www.readbyqxmd.com/read/28039611/alternative-new-mesenchymal-stem-cell-source-exerts-tumor-tropism-through-alcam-and-n-cadherin-via-regulation-of-microrna-192-and-218
#11
Ran Kim, Sang In Park, Chang Youn Lee, Jihyun Lee, Pilseog Kim, Sekyung Oh, Hojin Lee, Min Young Lee, Jongmin Kim, Yong-An Chung, Ki-Chul Hwang, Lee-So Maeng, Woochul Chang
Gliomas are the most common type of malignant primary brain tumors. Some treatments of gliomas exist, but they are rarely curative. Mesenchymal stem cells (MSCs) are emerging as potential modes of targeted cancer therapy owing to their capacity for homing toward tumor sites. It has been proposed that MSCs derived from various sources, such as bone marrow, adipose tissue and umbilical cord blood, can be used as cell-based therapy for brain tumors. Here, MSCs obtained from the synovial fluid of osteoarthritis or rheumatoid arthritis patients were investigated as therapeutic candidates...
December 30, 2016: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28018908/partial-cranial-cruciate-ligament-tears-treated-with-stem-cell-and-platelet-rich-plasma-combination-therapy-in-36-dogs-a-retrospective-study
#12
Sherman O Canapp, Christopher S Leasure, Catherine Cox, Victor Ibrahim, Brittany J Carr
OBJECTIVE: To evaluate outcomes in 36 dogs with a partial cranial cruciate ligament (CCL) tear treated with autologous bone marrow aspirate concentrate (BMAC) or adipose-derived progenitor cells (ADPC) with platelet-rich plasma (PRP) combination. MATERIALS AND METHODS: Medical records of client-owned dogs diagnosed with an early partial (≤50%) tear of the craniomedial band of the CCL that was treated with BMAC-PRP or ADPC-PRP were reviewed from 2010 to 2015. Signalment, medical history, physical and orthopedic examination, objective temporospatial gait analyses, radiographs, day 0 and day 90 diagnostic arthroscopy findings, treatment, and outcome were among the data collected...
2016: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/28004288/in-vivo-quantification-of-the-revascularization-of-a-human-acellular-dermis-seeded-with-epcs-and-mscs-in-co-culture-with-fibroblasts-and-pericytes-in-the-dorsal-chamber-model-in-pre-irradiated-tissue
#13
M Vitacolonna, D Belharazem, P Hohenberger, E D Roessner
INTRODUCTION: Transplantation of a cell-seeded graft may improve wound healing after radiotherapy. However, the survival of the seeded cells depends on a rapid vascularization of the graft. Co-culturing of adult stem cells may be a promising strategy to accelerate the vessel formation inside the graft. Thus, we compared the in vivo angiogenic potency of mesenchymal stem cells (MSC) and endothelial progenitor cells (EPC) using dorsal skinfold chambers and intravital microscopy. MATERIALS AND METHODS: Cells were isolated from rat bone marrow and adipose tissue and characterized by immunostaining and flow cytometry...
December 21, 2016: Cell and Tissue Banking
https://www.readbyqxmd.com/read/28002902/bone-marrow-concentrated-cells-and-stromal-vascular-fraction-cells-injections-for-osteoarthritis-treatment-a-systematic-review
#14
G Vadalà, R Papalia, L La Verde, F Russo, V Denaro, M A Rosa
The aim of this systematic review is to examine current clinical evidences supporting the intraarticular injection of bone marrow concentrate cells (BMC) and adipose-derived stromal vascular fraction cells (SVF) for the treatment of osteoarthritis (OA). The research was performed on PubMed (Medline), EMBASE and Cochrane Library considering the English literature. Only clinical trials have been included. The systematic research identified twelve clinical trials. Articles included in the study, were one of level II, four of level III, six of level IV and one level V...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28000538/mesenchymal-stromal-cells-with-enhanced-therapeutic-properties
#15
John Girdlestone
Mesenchymal stromal cells (MSC) are connective tissue progenitor cells with interesting immunoregulatory properties and are currently being assessed as cellular therapeutics in a variety of clinical applications. While bone marrow has been the traditional source, adipose tissue and umbilical cord are being used increasingly to generate MSC for therapeutic use as an allogeneic, off-the-shelf product. Although the means by which MSC home to sites of inflammation or tissue damage and exert their beneficial effects remain to be fully elucidated, they have recently been shown to adsorb a number of immunosuppressive and anticancer drugs that may further enhance their therapeutic potential...
December 2016: Immunotherapy
https://www.readbyqxmd.com/read/27997569/three-dimensional-arrangement-of-human-bone-marrow-microvessels-revealed-by-immunohistology-in-undecalcified-sections
#16
Birte S Steiniger, Vitus Stachniss, Verena Wilhelmi, Anja Seiler, Katrin Lampp, Andreas Neff, Michael Guthe, Oleg Lobachev
The arrangement of microvessels in human bone marrow is so far unknown. We combined monoclonal antibodies against CD34 and against CD141 to visualise all microvessel endothelia in 21 serial sections of about 1 cm2 size derived from a human iliac crest. The specimen was not decalcified and embedded in Technovit® 9100. In different regions of interest, the microvasculature was reconstructed in three dimensions using automatic methods. The three-dimensional models were subject to a rigid semiautomatic and manual quality control...
2016: PloS One
https://www.readbyqxmd.com/read/27994622/bone-formation-by-sheep-stem-cells-in-an-ectopic-mouse-model-comparison-of-adipose-and-bone-marrow-derived-cells-and-identification-of-donor-derived-bone-by-antibody-staining
#17
Kristian Kjærgaard, Chris H Dreyer, Nicholas Ditzel, Christina M Andreasen, Li Chen, Søren P Sheikh, Søren Overgaard, Ming Ding
Background. Scaffolds for bone tissue engineering (BTE) can be loaded with stem and progenitor cells (SPC) from different sources to improve osteogenesis. SPC can be found in bone marrow, adipose tissue, and other tissues. Little is known about osteogenic potential of adipose-derived culture expanded, adherent cells (A-CEAC). This study compares in vivo osteogenic capacity between A-CEAC and bone marrow derived culture expanded, adherent cells (BM-CEAC). Method. A-CEAC and BM-CEAC were isolated from five female sheep and seeded on hydroxyapatite granules prior to subcutaneous implantation in immunodeficient mice...
2016: Stem Cells International
https://www.readbyqxmd.com/read/27990180/the-effect-of-rgd-peptide-on-2d-and-miniaturized-3d-culture-of-hepm-cells-mscs-and-adscs-with-alginate-hydrogel
#18
Jenna Dumbleton, Pranay Agarwal, Haishui Huang, Nathaniel Hogrebe, Renzhi Han, Keith J Gooch, Xiaoming He
Advancements in tissue engineering require the development of new technologies to study cell behavior in vitro. This study focuses on stem cell behavior within various miniaturized three-dimensional (3D) culture conditions of alginate biomaterials modified with the Arg-Gly-Asp (RGD) peptide known for its role in cell adhesion/attachment. Human embryonic palatal mesenchyme (HEPM) cells, bone marrow derived mesenchymal stem cells (MSCs), and human adipose derived stem cells (ADSCs) were cultured on a flat hydrogel of different concentrations of alginate-RGD, and in the miniaturized 3D core of microcapsules with either a 2% alginate or 2% alginate-RGD shell...
June 2016: Cellular and Molecular Bioengineering
https://www.readbyqxmd.com/read/27986984/bone-marrow-sfrp5-level-is-negatively-associated-with-bone-formation-markers
#19
H Chen, Y He, D Wu, G Dai, C Zhao, W Huang, D Jiang
: Secreted frizzled-related protein 5 (sFRP5) level in bone marrow environment is inversely correlated with bone formation markers, suggesting that it decreases bone mass by inhibiting bone formation. Besides, it functions in a local fashion when regulating bone metabolism. sFRP5 may be a target when developing anti-osteoporotic agents. INTRODUCTION: The purpose of the study is to investigate the relationship between bone marrow sFRP5 level and bone turnover state...
December 17, 2016: Osteoporosis International
https://www.readbyqxmd.com/read/27966263/molecular-and-microarray-based-analysis-of-diversity-among-resting-and-osteogenically-induced-porcine-mesenchymal-stromal-cells-of-several-tissue-origin
#20
Samet Bayraktar, Pascal Jungbluth, René Deenen, Jan Grassmann, Johannes Schneppendahl, Daphne Eschbach, Armin Scholz, Joachim Windolf, Christoph V Suschek, Vera Grotheer
Mesenchymal stromal cells (MSC) play a pivotal role in modern therapeutic approaches in bone healing disorders. Although bone marrow-derived MSC are most frequently used, the knowledge that many other adult tissues represent promising sources for potent MSC has gained acceptance. In the present study, the osteogenic differentiation potential of porcine skin fibroblasts (FB) as well as bone marrow- (BMSC), adipose tissue- (ASC), and dental pulp-derived stromal cells (DSC) were evaluated. However, additional application of BMP-2 significantly elevated the delayed osteogenic differentiation capacity of ASC and FB cultures...
December 14, 2016: Journal of Tissue Engineering and Regenerative Medicine
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