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https://www.readbyqxmd.com/read/29775758/lncrna-prncr1-regulates-osteogenic-differentiation-in-osteolysis-after-hip-replacement-by-targeting-mir-211-5p
#1
Zong-Ming Gong, Zhen-Yu Tang, Xiao-Liang Sun
BACKGROUND: Osteogenic differentiation and osteolysis after hip replacement are both associated with bone metabolism. Interaction between lncRNA PRNCR1 and miR-211-5p was analyzed to illuminate their roles in osteogenic differentiation and osteolysis. METHODS: The expression of PRNCR1, miR-211-5p and C-X-C chemokine receptor-4 (CXCR4) protein in tissues and mesenchymal stem cells (MSCs) were determined by qRT-PCR and Western blot, separately. The osteogenic differentiation was assessed by ALP activity detection and ARS staining...
May 15, 2018: Gene
https://www.readbyqxmd.com/read/29752342/lncrna-prncr1-regulates-osteogenic-differentiation-in-osteolysis-after-hip-replacement-by-targeting-mir-211-5p
#2
Zong-Ming Gong, Zhen-Yu Tang, Xiao-Liang Sun
Background Osteogenic differentiation and osteolysis after hip replacement are both associated with bone metabolism. Interaction between the long non-coding RNA (lncRNA) prostate cancer non-coding RNA 1 (PRNCR1) and miR-211-5p was analyzed to illuminate their roles in osteogenic differentiation and osteolysis. Methods The expression of PRNCR1, miR-211-5p and C-X-C chemokine receptor-4 (CXCR4) protein in tissues and mesenchymal stem cells (MSCs) were determined by qRT-PCR and western blot, separately. The osteogenic differentiation was assessed with Alkaline phosphatase (ALP) activity detection and ARS staining...
May 11, 2018: Bioscience Reports
https://www.readbyqxmd.com/read/29727032/standard-and-line-to-line-cementation-of-a-polished-short-hip-stem-long-term-in-vitro-implant-stability
#3
Kavin Morellato, Thomas M Grupp, Uwe Bader, Mevluet Sungu, Bernd Fink, Luca Cristofolini
The current trend is towards shorter hip stems. While there is a general agreement on the need for a cement mantle thicker than 2mm, some surgeons prefer line-to-line cementation, where the mantle has only the thickness provided by the cement-bone interdigitation. The aim of this study was to assess if a relatively short, polished hip stem designed for a standard cementation can also be cemented line-to-line without increasing the risk of long-term loosening. Composite femurs with specific open-cell foam to allow cement-bone interdigitation were used...
May 4, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29700358/premyogenic-progenitors-derived-from-human-pluripotent-stem-cells-expand-in-floating-culture-and-differentiate-into-transplantable-myogenic-progenitors
#4
Fusako Sakai-Takemura, Asako Narita, Satoru Masuda, Toshifumi Wakamatsu, Nobuharu Watanabe, Takashi Nishiyama, Ken'ichiro Nogami, Matthias Blanc, Shin'ichi Takeda, Yuko Miyagoe-Suzuki
Human induced pluripotent stem cells (hiPSCs) are a potential source for cell therapy of Duchenne muscular dystrophy. To reliably obtain skeletal muscle progenitors from hiPSCs, we treated hiPS cells with a Wnt activator, CHIR-99021 and a BMP receptor inhibitor, LDN-193189, and then induced skeletal muscle cells using a previously reported sphere-based culture. This protocol greatly improved sphere formation efficiency and stably induced the differentiation of myogenic cells from hiPS cells generated from both healthy donors and a patient with congenital myasthenic syndrome...
April 26, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29696307/stem-cell-therapy-in-bilateral-osteonecrosis-computer-assisted-surgery-versus-conventional-fluoroscopic-technique-on-the-contralateral-side
#5
Philippe Hernigou, Benjamin Thiebaut, Victor Housset, Claire Bastard, Yasuhiro Homma, Younes Chaib, Charles Henri Flouzat Lachaniette
PURPOSE: Surgical management of osteonecrosis with core decompression with stem cell therapy is a new procedure. The technique is performed with fluoroscopic guidance. This study attempts to determine if computer-navigated technique can improve the procedure. METHODS: Thirty consecutive patients with bilateral symptomatic osteonecrosis without collapse were included in this study during the year 2011. A prospective, randomized, and controlled study was conducted on 60 hips (bilateral osteonecrosis) using conventional fluoroscopy technique on one side and computer-based navigation on the contralateral side...
April 26, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29684447/type-3-iodothyronine-deiodinase-is-expressed-in-human-induced-pluripotent-stem-cell-derived-cardiomyocytes
#6
Kumiko Nishimura, Masafumi Takeda, Jun K Yamashita, Ichiro Shiojima, Nagaoki Toyoda
AIMS: Type 3 iodothyronine deiodinase (D3), which converts thyroxine (T4 ) and 3,5,3'-triiodothyronine (T3 ) to 3,3',5'-triiodothyronine (rT3 ) and 3,3'-diiodothyronine (T2 ), respectively, inactivates thyroid hormones. We investigated the expression and regulation of D3 in human cardiomyocytes which were differentiated from human induced pluripotent stem cells (hiPSCs). MAIN METHODS: We characterized D3 activity using liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis...
April 20, 2018: Life Sciences
https://www.readbyqxmd.com/read/29675502/survival-analysis-after-core-decompression-in-association-with-platelet-rich-plasma-mesenchymal-stem-cells-and-synthetic-bone-graft-in-patients-with-osteonecrosis-of-the-femoral-head
#7
Riccardo D'Ambrosi, Elena Biancardi, Giulia Massari, Vincenza Ragone, Renato Mario Facchini
Purpose  The aim of this study was to report the rate of survivorship in patients with osteonecrosis of the femoral head treated with core decompression in association with mesenchymal stem cells (MSCs) implantation, platelet-rich plasma (PRP) injection, and synthetic bone graft. Methods  We evaluated 24 hips in 16 patients, according to Ficat classification, treated by core decompression, injection of PRP and MSCs, and backfilling of the core tract with synthetic bone graft. Survivorship was estimated using Kaplan-Meier curves...
March 2018: Joints
https://www.readbyqxmd.com/read/29672284/induction-of-pluripotent-stem-cell-derived-cardiomyocyte-toxicity-by-supernatant-of-long-term-stored-red-blood-cells-in-vitro
#8
Fengyan Fan, Yang Yu, Liping Sun, Shufang Wang, Rui Wang, Leiying Zhang, Cuiying Li, Deqing Wang
BACKGROUND/AIMS: Preserved red blood cells (RBCs) in vitro undergo a series of morphological, functional and metabolic changes during storage. RBC metabolites accumulate over time during storage, the toxicity of the supernatants of RBCs (SSRBCs) on tissue cells is largely unknown. Here, we aimed to study cardiomyocyte toxicity by supernatant of long term-stored RBCs in vitro and to discover elements involved in the mechanism. METHODS: Using human-induced pluripotent stem cell-derived cardiomyocytes (hiPS-CMs) and real-time cell analyzing (RTCA), we analyzed the cardiotoxicity of d0, d14 and d35 SSRBCs...
April 16, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29662652/guided-bone-regeneration-using-a-bone-tissue-engineering-complex-consisting-of-a-poly-dl-lactide-membrane-and-bone-mesenchymal-stem-cells
#9
Dahui Wang, Yifeng Lin, Lian Chen, Yueqiang Mo, Peng Huang, Ruixue Ma
Developmental dysplasia of the hip (DDH) is one of the most common diseases encountered in pediatric orthopedic departments. Current treatment strategies seek to improve acetabular coverage, the principal defect of acetabular dysplasia, but are not very successful. We developed a guided bone regeneration (GBR) strategy to improve acetabular coverage via bone tissue engineering (BTE). Poly- dl -lactide (PDLLA) membranes were seeded with bone marrow mesenchymal stem cells (BMSCs) to form a BTE complex, which was then implanted into the superior margin of the acetabulum in a rabbit DDH model...
March 27, 2018: Oncotarget
https://www.readbyqxmd.com/read/29607863/total-hip-replacement-in-sickle-cell-disorder-a-preliminary-report-of-challenges-and-early-outcome-of-21-consecutive-patients
#10
A U Katchy, U E Anyaehie, C U Nwadinigwe, G O Eyichukwu
Objective: The aim of this study is to describe the pattern of presentation osteoarthritic patients with sickle cell disorder (SCD) in our environment, determine the implant sizes taking the peculiar nature of the pathology and our operating environment into consideration, highlight the challenges and technical difficulties encountered during the procedure, measure the functional outcome and observe complications of treatment, recommend ways of improving outcome. Patients and Methods: Between November 2008 and November 2012, 29 consecutive primary total hip replacements (THRs) were performed on 21 patients with avascular necrosis of the head of femur secondary to SCD...
April 2018: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/29604965/computational-modeling-of-amylin-induced-calcium-dysregulation-in-rat-ventricular-cardiomyocytes
#11
Bradley D Stewart, Caitlin E Scott, Thomas P McCoy, Guo Yin, Florin Despa, Sanda Despa, Peter M Kekenes-Huskey
Hyperamylinemia is a condition that accompanies obesity and precedes type II diabetes, and it is characterized by above-normal blood levels of amylin, the pancreas-derived peptide. Human amylin oligomerizes easily and can deposit in the pancreas [1], brain [2], and heart [3], where they have been associated with calcium dysregulation. In the heart, accumulating evidence suggests that human amylin oligomers form moderately cation-selective [4,5] channels that embed in the cell sarcolemma (SL). The oligomers increase membrane conductance in a concentration-dependent manner [5], which is correlated with elevated cytosolic Ca2+ ...
May 2018: Cell Calcium
https://www.readbyqxmd.com/read/29601399/reply-to-the-letter-to-the-editor-stem-cells-combined-with-platelet-rich-plasma-effectively-treat-corticosteroid-induced-osteonecrosis-of-the-hip-a-prospective-study
#12
Matthew T Houdek, Cody C Wyles, Mark S Collins, Benjamin M Howe, Andre Terzic, Atta Behfar, Rafael J Sierra
No abstract text is available yet for this article.
March 28, 2018: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/29601389/letter-to-the-editor-stem-cells-combined-with-platelet-rich-plasma-effectively-treat-corticosteroid-induced-osteonecrosis-of-the-hip-a-prospective-study
#13
Nicolas S Piuzzi
No abstract text is available yet for this article.
March 28, 2018: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/29595056/live-cell-imaging-in-microfluidic-device-proves-resistance-to-oxygen-glucose-deprivation-in-hips-cms
#14
Sebastian Martewicz, Giulia Gabrel, Marika Campesan, Marcella Canton, Fabio Di Lisa, Nicola Elvassore
Analyses of cellular responses to fast oxygen dynamics are challenging and require ad hoc technological solutions, especial-ly when decoupling from liquid media composition is required. In this work, we present a microfluidic device specifically designed for culture analyses with high resolution and magnification objectives, providing full optical access to the cell cul-ture chamber. This feature allows fluorescence-based assays, photo-activated surface chemistry and live cell imaging under tightly controlled pO2 environments...
March 29, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29580785/donor-mesenchymal-stem-cell-linetics-after-transamniotic-stem-cell-therapy-trascet-for-experimental-spina-bifida
#15
Hester F Shieh, Azra Ahmed, Lucas Rohrer, David Zurakowski, Dario O Fauza
PURPOSE: We sought to examine donor mesenchymal stem cell (MSC) kinetics after transamniotic stem cell therapy (TRASCET) in experimental spina bifida. METHODS: Pregnant Sprague-Dawley dams exposed to retinoic acid for the induction of fetal neural tube defects received volume-matched intra-amniotic injections on gestational day 17 (E17; term=E22): either amniotic fluid MSCs (afMSCs) labeled with a luciferase reporter gene (n=78), or luciferase protein alone (n=66)...
March 6, 2018: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/29535773/ion-channel-expression-and-characterization-in-human-induced-pluripotent-stem-cell-derived-cardiomyocytes
#16
Zhihan Zhao, Huan Lan, Ibrahim El-Battrawy, Xin Li, Fanis Buljubasic, Katherine Sattler, Gökhan Yücel, Siegfried Lang, Malte Tiburcy, Wolfram-Hubertus Zimmermann, Lukas Cyganek, Jochen Utikal, Thomas Wieland, Martin Borggrefe, Xiao-Bo Zhou, Ibrahim Akin
Background: Human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) are providing new possibilities for the biological study, cell therapies, and drug discovery. However, the ion channel expression and functions as well as regulations in hiPSC-CMs still need to be fully characterized. Methods: Cardiomyocytes were derived from hiPS cells that were generated from two healthy donors. qPCR and patch clamp techniques were used for the study. Results: In addition to the reported ion channels, INa , ICa-L , ICa-T , If , INCX , IK1 , Ito , IKr , IKs IKATP , IK-pH , ISK1-3 , and ISK4 , we detected both the expression and currents of ACh-activated (KACh) and Na+ -activated (KNa) K+ , volume-regulated and calcium-activated (Cl-Ca) Cl- , and TRPV channels...
2018: Stem Cells International
https://www.readbyqxmd.com/read/29529675/corr-insights%C3%A2-stem-cells-combined-with-platelet-rich-plasma-effectively-treat-corticosteroid-induced-osteonecrosis-of-the-hip-a-prospective-study
#17
Thomas Parker Vail
No abstract text is available yet for this article.
February 2018: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/29529674/stem-cells-combined-with-platelet-rich-plasma-effectively-treat-corticosteroid-induced-osteonecrosis-of-the-hip-a-prospective-study
#18
Matthew T Houdek, Cody C Wyles, Mark S Collins, Benjamin M Howe, Andre Terzic, Atta Behfar, Rafael J Sierra
BACKGROUND: Randomized trials have shown the benefits of injecting bone marrow-derived mesenchymal stem cells (BmMSCs) after standard hip decompression in patients with osteonecrosis of the femoral head. However, the combination of BmMSCs and platelet-rich plasma (PRP) injected into the femoral head after decompression has not been reported previously. This study reports the results in a preliminary series of patients with osteonecrosis of the femoral head treated with BmMSCs plus PRP...
February 2018: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/29496562/impaired-bone-mineral-density-in-pediatric-patients-with-chronic-graft-versus-host-disease
#19
Nataliya P Buxbaum, Cemre Robinson, Ninet Sinaii, Alexander Ling, Lauren M Curtis, Steven Z Pavletic, Kristin Baird, Maya B Lodish
Pediatric allogeneic hematopoietic stem cell transplantation (AHSCT) recipients with chronic graft-versus-host disease (cGVHD) are at high risk for endocrinopathies, particularly impaired bone mineral density (BMD). However, rates of BMD impairment in pediatric AHSCT recipients with cGVHD have not been well documented. We report 33 patients with cGVHD who were referred to the National Institutes of Health (NIH) for the Natural History of Clinical and Biological Factors Determining Outcomes in Chronic Graft-versus-Host Disease Study (NCT 0092235) and underwent formal BMD assessment via dual-energy X-ray absorptiometry (DEXA)...
March 1, 2018: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29482598/human-induced-pluripotent-stem-cell-derived-macrophages-and-their-immunological-function-in-response-to-tuberculosis-infection
#20
Danping Hong, Jiongyan Ding, Ouyang Li, Quan He, Minxia Ke, Mengyi Zhu, Lili Liu, Wen-Bin Ou, Yulong He, Yuehong Wu
BACKGROUND: Induced pluripotent stem cells (iPS) represent an innovative source for the standardized in vitro generation of macrophages (Mφ). Mφ show great promise in disease pathogenesis, particularly tuberculosis. However, there is no information about human iPS-derived (hiPS) macrophages (hiPS-Mφ) in response to tuberculosis infection. METHODS: In the present study, macrophages derived from hiPS were established via embryoid body (EB) formation by using feeder-free culture conditions, and the human monocyte cell line THP-1 (THP-1-Mφ) was used as control...
February 26, 2018: Stem Cell Research & Therapy
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