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https://www.readbyqxmd.com/read/28338402/testosterone-plus-finasteride-prevents-bone-loss-without-prostate-growth-in-a-rodent-spinal-cord-injury-model
#1
Joshua F Yarrow, Ean G Phillips, Christine F Conover, Taylor E Bassett, Cong Chen, Tyler Teurlings, Andrea Vasconez, Jonathan Alerte, Hannah M Prock, Jessica M Jiron, Micah Flores, J Ignacio Aguirre, Stephen E Borst, Fan Ye
We have reported that testosterone-enanthate (TE) prevents the musculoskeletal decline occurring acutely after spinal cord injury (SCI), but results in a near doubling of prostate mass. Our purpose was to test the hypothesis that administration of TE plus finasteride (FIN, type II 5α-reductase inhibitor) would prevent the chronic musculoskeletal deficits in our rodent severe contusion SCI model, without inducing prostate enlargement. Forty-three 16-week old male Sprague-Dawley rats received: (1) SHAM surgery (T9 laminectomy), (2) severe (250 kdyne) contusion SCI, (3) SCI+TE (7...
March 24, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28322240/international-spinal-cord-injury-endocrine-and-metabolic-extended-data-set
#2
W A Bauman, J M Wecht, F Biering-Sørensen
OBJECTIVE: The objective of this study was to develop the International Spinal Cord Injury (SCI) Endocrine and Metabolic Extended Data Set (ISCIEMEDS) within the framework of the International SCI Data Sets that would facilitate consistent collection and reporting of endocrine and metabolic findings in the SCI population. SETTING: This study was conducted in an international setting. METHODS: The ISCIEMEDS was developed by a working group...
March 21, 2017: Spinal Cord
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
#3
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/28284666/anthropometric-and-biomechanical-characteristics-of-body-segments-in-persons-with-spinal-cord-injury
#4
Y Fang, L R Morse, N Nguyen, N G Tsantes, K L Troy
People with spinal cord injury (SCI) experience bone and muscle loss in their paralyzed limbs that is most rapid and severe in the first 3years after injury. Restoration of mechanical loading through therapeutic physical activity may potentially slow or reverse post-SCI bone loss, however, therapeutic targets cannot be developed without accurate biomechanical models. Obesity is prevalent among SCI population, and it alters body composition and further affects parameters of these models. Here, clinical whole body dual-energy X-ray absorptiometry data from people with acute (n=39) and chronic (n=61) SCI were analyzed to obtain anthropometric parameters including segment masses, center of mass location, and radius of gyration for both obese and non-obese individuals...
February 3, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28255089/anthropometric-prediction-of-skeletal-muscle-cross-sectional-area-in-persons-with-spinal-cord-injury
#5
Rodney C Wade, Ashraf S Gorgey
Finding an accurate and affordable method to quantify muscle size following spinal cord injury (SCI) could provide benefits clinically and in research settings. The purpose of this study was to validate the use of anthropometric measurements versus magnetic resonance imaging (MRI) to evaluate muscle cross-sectional area (CSA) and develop a field equation to predict muscle CSA specific to the SCI population. Twenty-two men with chronic (>1yr) motor complete SCI participated in the current study. Anthropometric measurements, including mid-thigh circumference and anterior skinfold thickness (SFT), were taken on the right thigh...
March 2, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28254121/corrigendum-to-evaluation-of-mechanical-strengths-of-three-types-of-mini-implants-in-artificial-bones-kaohsiung-j-med-sci%C3%A2-33-2-2017-96-101
#6
Yu-Chuan Tseng, Ju-Hui Wu, Chun-Chan Ting, Hong-Sen Chen, Chun-Ming Chen
No abstract text is available yet for this article.
March 2017: Kaohsiung Journal of Medical Sciences
https://www.readbyqxmd.com/read/28231405/three-dimensional-printing-of-x-ray-computed-tomography-datasets-with-multiple-materials-using-open-source-data-processing
#7
Ian M Sander, Matthew T McGoldrick, My N Helms, Aislinn Betts, Anthony van Avermaete, Elizabeth Owers, Evan Doney, Taimi Liepert, Glen Niebur, Douglas Liepert, W Matthew Leevy
Advances in three-dimensional (3D) printing allow for digital files to be turned into a "printed" physical product. For example, complex anatomical models derived from clinical or pre-clinical X-ray computed tomography (CT) data of patients or research specimens can be constructed using various printable materials. Although 3D printing has the potential to advance learning, many academic programs have been slow to adopt its use in the classroom despite increased availability of the equipment and digital databases already established for educational use...
February 23, 2017: Anatomical Sciences Education
https://www.readbyqxmd.com/read/28173736/the-alternative-receptor-for-complement-component-5a-c5ar2-conveys-neuroprotection-in-traumatic-spinal-cord-injury
#8
Patrick Biggins, Faith Brennan, Stephen Taylor, Trent Woodruff, Marc Ruitenberg
This study investigated the role of the secondary receptor for complement activation fragment C5a, C5aR2, in secondary inflammatory pathology following contusive spinal cord injury (SCI) in mice. <i>C5ar2<sup>-/-</sup></i> mice exhibited decreased intraparenchymal TNFα and IL-6 acutely after injury but these reductions did not translate into improved outcomes. We show that loss of C5aR2 leads to increased lesion volumes, reduced myelin sparing and significantly worsened recovery from SCI in <i>C5ar2<sup>-/-</sup></i> animals compared to wild-type (WT) controls...
February 7, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28123490/reduced-inflammatory-cell-recruitment-and-tissue-damage-in-spinal-cord-injury-by-acellular-spinal-cord-scaffold-seeded-with-mesenchymal-stem-cells
#9
Yu-Hai Wang, Jian Chen, Jing Zhou, Feng Nong, Jin-Han Lv, Jia Liu
Therapy using acellular spinal cord (ASC) scaffolds seeded with bone marrow stromal cells (BMSCs) has previously been shown to restore function of the damaged spinal cord and improve functional recovery in a rat model of acute hemisected spinal cord injury (SCI). The aim of the present study was to determine whether BMSCs and ASC scaffolds promote the functional recovery of the damaged spinal cord in a rat SCI model through regulation of apoptosis and immune responses. Whether this strategy regulates secondary inflammation, which is characterized by the infiltration of immune cells and inflammatory mediators to the lesion site, in SCI repair was investigated...
January 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28121340/research-on-the-effect-and-mechanism-of-the-cxcr-4-overexpressing-bmscs-combined-with-sdf-1%C3%AE-for-the-cure-of-acute-sci-in-rats
#10
B-W Sun, H-M Shen, B-C Liu, H-L Fang
OBJECTIVE: To evaluate the effect and mechanism of bone marrow stem cells (BMSCs) modified with CXCR-4 gene combined with stromal derived factor-1α (SDF-1α) in the treatment of acute spinal cord injury (SCI) in rats. MATERIALS AND METHODS: CXCR-4 gene was transfected by a virus. Spinal cord injury rats were randomly divided into four groups: control group, SDF-1α group, CXCR-4/BMSC group and combined group. The motor function was evaluated with Blood Brain Barrier (BBB) score and the RNA expression of CXCR-4 were measured by PCR...
January 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28115072/complications-of-spinal-cord-injury-over-the-first-year-after-discharge-from-inpatient-rehabilitation
#11
Michael D Stillman, Jason Barber, Steve Burns, Steve Williams, Jeanne M Hoffman
OBJECTIVES: To describe the prevalence and cumulative incidence (CI) of secondary complications of spinal cord injury (SCI) in the first year after discharge from inpatient rehabilitation (IR). To evaluate potential associations between risk of complications and socio-demographic and injury-specific factors. DESIGN: Secondary analysis of data collected for a single-site, single-blind, randomized controlled trial comparing telephone follow up to usual care. SETTING: Two inpatient rehabilitation units comprising the Northwest Regional SCI System in Seattle, Washington...
January 20, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28112873/transplantation-of-human-bone-marrow-derived-clonal-mesenchymal-stem-cells-reduces-ffibrotic-sscar-fformation-in-a-rat-spinal-cord-injury-model
#12
Moonhang Kim, Kil Hwan Kim, Sun U Song, Tac Ghee Yi, Seung Hwan Yoon, So Ra Park, Byung Hyune Choi
This study aimed at evaluating the therapeutic effect on tissue repair and scar formation of human bone marrow-derived clonal mesenchymal stem cells (hcMSCs) homogeneously isolated by using a subfractionation culturing method, in comparison with the non-clonal MSCs (hMSCs), in a rat spinal cord injury (SCI) model. The SCI was made using a vascular clip at the T9 level. Cells were transplanted into the lesion site 3 days after injury. A functional test was performed over 4 weeks employing a BBB score. Rats were killed for histological analysis at 3 days, 1 week and 4 weeks after injury...
January 23, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28104245/assessing-kinematics-and-kinetics-of-functional-electrical-stimulation-rowing
#13
Adina E Draghici, Glen Picard, J Andrew Taylor, Sandra J Shefelbine
Hybrid functional electrical stimulation (FES) rowing has positive effects on cardiovascular fitness, producing significantly greater aerobic power than either upper body or FES exercise alone. However, there is minimal information on the kinematics, kinetics, and mechanical efficiency of FES-rowing in the spinal cord injured (SCI) population. This study examined the biomechanics of FES-rowing to determine how motions, forces, and aerobic demand change with increasing intensity. Six individuals with SCI and six able-bodied subjects performed a progressive aerobic capacity rowing test...
February 28, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28099928/the-sdf-1-cxcr4-axis-promotes-recovery-after-spinal-cord-injury-by-mediating-bone-marrow-derived-from-mesenchymal-stem-cells
#14
Guo-Dong Wang, Yi-Xun Liu, Xiao Wang, Yong-Le Zhang, Ya-Dong Zhang, Feng Xue
This study aims to explore the role of the SDF-1/CXCR4 axis in mediating BMSCs and SCI recovery. BMSCs were collected and SCI rat models were established. Wistar rats were assigned into the blank control, sham, SCI, SCI + BMSCs, SCI + BMSCs + SDF-1, SCI + BMSCs + AMD3100 (an inhibitor of SDF-1/CXCR4 axis) and SCI + BMSCs + SDF-1 + AMD3100 groups. Hind limb motor function was measured 7, 14, 21 and 28 days after operation. qRT-PCR, western blotting and ELISA was performed to determine the expressions of SDF-1, CXCR4, NGF, BDNF, GFAP and GAP-43, TNF-α, IL-1β, L-6 and IFN-γ...
January 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/28096400/defining-recovery-neurobiology-of-injured-spinal-cord-by-synthetic-matrix-assisted-hmsc-implantation
#15
Alexander E Ropper, Devang K Thakor, InBo Han, Dou Yu, Xiang Zeng, Jamie E Anderson, Zaid Aljuboori, Soo-Woo Kim, Hongjun Wang, Richard L Sidman, Ross D Zafonte, Yang D Teng
Mesenchymal stromal stem cells (MSCs) isolated from adult tissues offer tangible potential for regenerative medicine, given their feasibility for autologous transplantation. MSC research shows encouraging results in experimental stroke, amyotrophic lateral sclerosis, and neurotrauma models. However, further translational progress has been hampered by poor MSC graft survival, jeopardizing cellular and molecular bases for neural repair in vivo. We have devised an adult human bone marrow MSC (hMSC) delivery formula by investigating molecular events involving hMSCs incorporated in a uniquely designed poly(lactic-co-glycolic) acid scaffold, a clinically safe polymer, following inflammatory exposures in a dorsal root ganglion organotypic coculture system...
January 31, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28089079/repeated-subarachnoid-administrations-of-autologous-mesenchymal-stromal-cells-supported-in-autologous-plasma-improve-quality-of-life-in-patients-suffering-incomplete-spinal-cord-injury
#16
Jesús Vaquero, Mercedes Zurita, Miguel A Rico, Celia Bonilla, Concepción Aguayo, Cecilia Fernández, Noemí Tapiador, Marta Sevilla, Carlos Morejón, Jesús Montilla, Francisco Martínez, Esperanza Marín, Salvador Bustamante, David Vázquez, Joaquín Carballido, Alicia Rodríguez, Paula Martínez, Coral García, Mercedes Ovejero, Marta V Fernández
BACKGROUND AIMS: Cell therapy with mesenchymal stromal cells (MSCs) offers new hope for patients suffering from spinal cord injury (SCI). METHODS: Ten patients with established incomplete SCI received four subarachnoid administrations of 30 × 10(6) autologous bone marrow MSCs, supported in autologous plasma, at months 1, 4, 7 and 10 of the study, and were followed until the month 12. Urodynamic, neurophysiological and neuroimaging studies were performed at months 6 and 12, and compared with basal studies...
January 6, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28078075/a-design-method-for-fes-bone-health-therapy-in-sci
#17
Brian Andrews, James Shippen, Monica Armengol, Robin Gibbons, William Holderbaum, William Harwin
FES assisted activities such as standing, walking, cycling and rowing induce forces within the leg bones and have been proposed to reduce osteoporosis in spinal cord injury (SCI). However, details of the applied mechanical stimulus for osteogenesis is often not reported. Typically, comparisons of bone density results are made after costly and time consuming clinical trials. These studies have produced inconsistent results and are subject to sample size variations. Here we propose a design process that may be used to predict the clinical outcome based on biomechanical simulation and mechano-biology...
September 15, 2016: European Journal of Translational Myology
https://www.readbyqxmd.com/read/28059803/whole-body-vibration-wbv-following-spinal-cord-injury-sci-in-rats-timing-of-intervention
#18
Marilena Manthou, Diana Saad Yousif Abdulla, Stoyan Pavlov Pavlov, Ramona Jansen, Habib Bendella, Klaus Nohroudi, Gregor Stein, Carolin Meyer, Ozlem Ozsoy, Umut Ozsoy, Yasemin Behram Kandemir, Levent Sarikcioglu, Oliver Semler, Eckhard Schoenau, Sarah Dunlop, Doychin Nikolov Angelov
BACKGROUND: Following spinal cord injury (SCI), exercise training provides a wide range of benefits and promotes activity-dependent synaptic plasticity. Whole body vibration (WBV) in SCI patients improves walking and spasticity as well as bone and muscle mass. However, little is known about the effects of timing or frequency of intervention. OBJECTIVE: To determine which WBV-onset improves locomotor and bladder functions and influences synaptic plasticity beneficially...
2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/28034635/patient-specific-bone-mineral-density-distribution-in-the-tibia-of-individuals-with-chronic-spinal-cord-injury-derived-from-multi-slice-peripheral-quantitative-computed-tomography-pqct-a-cross-sectional-study
#19
Sylvie Coupaud, Magnus K Gislason, Mariel Purcell, Keisuke Sasagawa, K Elizabeth Tanner
BACKGROUND: The high risk of fracture associated with chronic spinal cord injury (SCI) is attributed to extensive disuse-related bone loss in previously weight-bearing long bones. Changes in bone mineral density (BMD) after SCI have been documented extensively for the epiphyses of the tibia and femur, fracture-prone sites in this patient group. Less attention has been given to patterns of cortical bone loss in the diaphyses, but variability in BMD distributions throughout the long bones may contribute to some patients' increased susceptibility to shaft fractures in chronic SCI...
December 26, 2016: Bone
https://www.readbyqxmd.com/read/28025433/three-dimensional-changes-in-the-temporomandibular-joint-after-maxillary-protraction-in-children-with-skeletal-class-iii-malocclusion
#20
Hyunju Lee, Woo-Sung Son, Chun Kwak, Eun-Hee Kang, Seong-Sik Kim, Soo-Byung Park, Yong-Il Kim
We evaluated 3-dimensional changes in the temporomandibular joints of children with skeletal Class III malocclusion and maxillary deficiency after facemask therapy for maxillary protraction. Eighteen children with anterior crossbite and a Class III molar relationship underwent facemask therapy for maxillary protraction, after which they exhibited positive overjet and a Class II molar relationship. Three-dimensional cone-beam computed tomography images of the patients were obtained before (T1) and after (T2) facemask protraction, and the 3-dimensional coordinates of the anatomical landmarks in T1 and T2 images were compared...
2016: Journal of Oral Science
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