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https://www.readbyqxmd.com/read/28340265/association-of-runx2-and-tnfsf11-genes-with-production-traits-in-a-paternal-broiler-line
#1
N V Grupioni, N B Stafuzza, A B Carvajal, A M G Ibelli, J O Peixoto, M C Ledur, D P Munari
Intense selection for production traits has improved the genetic gain of important economic traits. However, selection for performance and carcass traits has led to the onset of locomotors problems and decreasing bone strength in broilers. Thus, genes associated with bone integrity traits have become candidates for genetic studies in order to reduce the impact of bone disorders in broilers. This study investigated the association of the RUNX2 and TNFSF11 genes with 79 traits related to performance, carcass composition, organs, and bone integrity in a paternal broiler line...
March 22, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28339014/effects-of-remote-ischemic-post%C3%A2-conditioning-on-fracture-healing-in-rats
#2
Meng Zhou, Shibao Lu, Guowei Lu, Jiang Huang, Limin Liu, Shuai An, Zheng Li, Huiliang Shen
Remote ischemic post‑conditioning (RIPC) is an established method to activate the hypoxia‑inducible factor‑1α (HIF‑1α) pathway, which is involved in the impairment of fracture healing. However, the role of RIPC in fracture healing remains to be fully elucidated. In the present study, rats received fractures and were divided into two groups: Control and RIPC, in which hind limb occlusion was performed. Rats were sacrificed at 7, 14, 28 and 42 days subsequent to tibial fracture. Micro‑computed tomography was performed to measure healing of the bone tissue and biomechanical testing was used to test mechanical strength...
March 22, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28339007/mir%C3%A2-217-inhibits-osteogenic-differentiation-of-rat-bone-marrow%C3%A2-derived-mesenchymal-stem-cells-by-binding-to-runx2
#3
Yu-Long Zhu, Shui Wang, De-Gang Ding, Liang Xu, Hai-Tao Zhu
The elucidation of the underlying molecular mechanisms regulating the osteogenic differentiation of bone marrow‑derived mesenchymal stem cells (BMSCs) is of great importance in improving the treatment of bone‑associated diseases. MicroRNAs (miRNAs) have been proven to regulate the osteogenic differentiation of BMSCs. The present study investigated the role of miR‑217 in the osteogenic differentiation of rat BMSCs. It was observed that miR‑217 expression levels were downregulated during the process of osteogenic differentiation...
March 22, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28337797/standardized-sophora-pachycarpa-root-extract-enhances-osteogenic-differentiation-in-adipose-derived-human-mesenchymal-stem-cells
#4
Samaneh Mollazadeh, Vajiheh Neshati, Bibi Sedigheh Fazly Bazzaz, Mehrdad Iranshahi, Majid Mojarrad, Hojjat Naderi-Meshkin, Mohammad Amin Kerachian
Bone defect is an important topic in public health. Novel therapies are based on osteogenic induction by natural antiosteoporotic compounds including plant-derived estrogens. In the current study, the osteogenic potential of Sophora pachycarpa root extract (SPRE) was explored on human adipose-derived mesenchymal stem cells. Herein, adipose-derived mesenchymal stem cells were osteoinducted in the presence of increased concentrations of the extract for 21 days. Then, cell viability was evaluated by MTT assay, and the differentiated cells were stained by Alizarin Red S for calcium deposition and subjected to alkaline phosphatase (ALP) assay for enzymatic activity...
March 24, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28337794/muramyl-dipeptide-a-shared-structural-motif-of-peptidoglycans-is-a-novel-inducer-of-bone-formation-through-induction-of-runx2
#5
Ok-Jin Park, Jiseon Kim, Jihyun Yang, Cheol-Heui Yun, Seung Hyun Han
Peptidoglycan fragments released from gut microbiota can be delivered to the bone marrow and affect bone metabolism. Here, we investigated the regulation of bone metabolism by muramyl dipeptide (MDP), which is a shared structural unit of peptidoglycans. Increased bone and mineral density by enhanced bone formation were observed in mice administered with MDP. Remarkably, pre-treatment or post-treatment with MDP alleviated bone loss in RANKL-induced osteoporosis mouse models. MDP directly augmented osteoblast differentiation and bone-forming gene expression by Runx2 activation...
March 24, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28332131/biostimulation-with-diode-laser-positively-regulates-cementoblast-functions-in-vitro
#6
Serife Buket Bozkurt, Erdogan E Hakki, Seyit Ali Kayis, Niyazi Dundar, Sema S Hakki
The aim of this study was to evaluate the effects of diode laser biostimulation on cementoblasts (OCCM.30). A total of 40 root plates were obtained from healthy third molar teeth and assigned to the following two groups: (1) control group and (2) laser-treated group. Root plates were placed into the cell culture inserts, and OCCM.30 cells were seeded onto root plates. Cells were irradiated with a low level of diode laser (power: 0.3 W in continuous wave, 60 s/cm(2)). Proliferation and mineralized tissue-associated gene's and BMP's messenger RNA (mRNA) expressions of cementoblasts were evaluated...
March 22, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28332126/klotho-suppresses-high-phosphate-induced-osteogenic-responses-in-human-aortic-valve-interstitial-cells-through-inhibition-of-sox9
#7
Fei Li, Qingzhou Yao, Lihua Ao, Joseph C Cleveland, Nianguo Dong, David A Fullerton, Xianzhong Meng
Elevated level of blood phosphate (Pi) associated with chronic kidney disease (CKD) is a risk factor of aortic valve calcification. Aortic valve interstitial cells (AVICs) display osteogenic responses to high Pi although the underlying mechanism is incompletely understood. Sox9 is a pro-chondrogenic factor and may play a role in ectopic tissue calcification. Circulating and kidney levels of Klotho are reduced in patients with CKD. We hypothesized that Sox9 mediates high Pi-induced osteogenic responses in human AVICs and that Klotho inhibits the responses...
March 22, 2017: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
https://www.readbyqxmd.com/read/28326730/-influences-of-vibration-on-rapid-osteogenic-response-of-osteoblasts
#8
Zhu Zhuoli, Zhang Ling, Ma Ruiyang, Gan Xueqi
OBJECTIVE: This study investigated the rapid response of osteoblasts, which were derived from low-magnitude high-frequency vibration (LMHFV). Refractory period-derived memory response was also observed. METHODS: MC3T3-E1 cells were incubated and received LMHFV stimulation (0.49 g, 40 Hz) for 30 min. After application of LMHFV, mRNA levels of earlier osteogenic differentiation markers Runt-related transcription factor 2 (Runx2), collagen typeⅠ(Col-Ⅰ), and alkaline phosphatase (ALP) were immediately detected by real-time fluorescence quantitative polymerase chain reaction in the absence or presence of antioxidant...
February 1, 2017: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28326345/methionine-restriction-alters-bone-morphology-and-affects-osteoblast-differentiation
#9
Amadou Ouattara, Diana Cooke, Raj Gopalakrishnan, Tsang-Hai Huang, Gene P Ables
Methionine restriction (MR) extends the lifespan of a wide variety of species, including rodents, drosophila, nematodes, and yeasts. MR has also been demonstrated to affect the overall growth of mice and rats. The objective of this study was to evaluate the effect of MR on bone structure in young and aged male and female C57BL/6J mice. This study indicated that MR affected the growth rates of males and young females, but not aged females. MR reduced volumetric bone mass density (vBMD) and bone mineral content (BMC), while bone microarchitecture parameters were decreased in males and young females, but not in aged females compared to control-fed (CF) mice...
December 2016: Bone Reports
https://www.readbyqxmd.com/read/28322869/scaffold-free-high-throughput-generation-of-quiescent-valvular-microtissues
#10
Annelies Roosens, Inès Puype, Ria Cornelissen
AIMS: The major challenge of working with valvular interstitial cells in vitro is the preservation or recovery of their native quiescent state. In this study, a biomimetic approach is used which aims to engineer small volume, high quality valve microtissues, having a potential in regenerative medicine and as a relevant 3D in vitro model to provide insights into valve (patho)biology. METHODS AND RESULTS: To form micro-aggregates, porcine valvular interstitial cells were seeded in agarose micro-wells and cultured in medium supplemented with 250μM Ascorbic Acid 2-phosphate for 22days...
March 17, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/28322831/chemical-inhibitors-of-c-met-receptor-tyrosine-kinase-stimulate-osteoblast-differentiation-and-bone-regeneration
#11
Jung-Woo Kim, Mi Nam Lee, Byung-Chul Jeong, Sin-Hye Oh, Min-Suk Kook, Jeong-Tae Koh
The c-Met receptor tyrosine kinase and its ligand, hepatocyte growth factor (HGF), have been recently introduced to negatively regulate bone morphogenetic protein (BMP)-induced osteogenesis. However, the effect of chemical inhibitors of c-Met receptor on osteoblast differentiation process has not been examined, especially the applicability of c-Met chemical inhibitors on in vivo bone regeneration. In this study, we demonstrated that chemical inhibitors of c-Met receptor tyrosine kinase, SYN1143 and SGX523, could potentiate the differentiation of precursor cells to osteoblasts and stimulate regeneration in calvarial bone defects of mice...
March 16, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28322449/tgf-%C3%AE-inhibits-osteogenesis-by-upregulating-the-expression-of-ubiquitin-ligase-smurf1-via-mapk-erk-signaling
#12
Xuewu Sun, Ziang Xie, Yan Ma, Xin Pan, Jiying Wang, Zhijun Chen, Peihua Shi
High incidence of osteoporotic fractures emphasizes the necessity of developing effective measures to promote osteogenesis. In our study, we investigated a possible role of MAPK-ERK signaling in the TGF-β-mediated osteoblastic differentiation. Our results indicated that TGF-β activated the MAPK-ERK pathway and inhibited osteogenesis in mesenchymal pluripotent cell line, C3H10T1/2, and preosteoblastic cell line, MC3T3 cells. And the downregulation of MAPK-ERK signaling using pharmacological inhibitor U0126 and RNA interference rescued osteoblast differentiation suppressed by TGF-β, which was confirmed by Alkaline phosphatase (ALP) staining and alizarrn red staining and the enhanced expression of osteogenesic markers...
March 21, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28320453/dysregulated-systemic-lymphocytes-affect-the-balance-of-osteogenic-adipogenic-differentiation-of-bone-mesenchymal-stem-cells-after-local-irradiation
#13
Xiaoya Xu, Ruixia Li, Yi Zhou, Qiong Zou, Qiaoling Ding, Jinfeng Wang, Weifang Jin, Guoqiang Hua, Jianjun Gao
BACKGROUND: While it is known that irradiation can induce local and systemic bone loss over time, how focal irradiation induces systemic bone complications remains unclear. Immune cells are thought to be crucial to bone homeostasis, and abnormal immune cells lead to serious disruption of bone homeostasis, such as in acute lymphoblastic leukaemia. This disruption primarily occurs due to inhibition of the osteogenic differentiation of bone mesenchymal stem cells (BMSCs). METHODS: In this study, we detected local and systemic bone loss in trabecular bone by micro-computed tomography (micro-CT) and measurement of peroxisome proliferator-activated receptor gamma (PPARγ) and runt-related transcription factor 2 (RUNX2) expression in BMSCs using real-time polymerase chain reaction and western blotting...
March 20, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28320084/lncrna-meg3-inhibited-osteogenic-differentiation-of-bone-marrow-mesenchymal-stem-cells-from-postmenopausal-osteoporosis-by-targeting-mir-133a-3p
#14
Qiujun Wang, Ying Li, Yuanxia Zhang, Lan Ma, Lin Lin, Jia Meng, Lihong Jiang, Liping Wang, Ping Zhou, Yina Zhang
BACKGROUND AND AIMS: Long non-coding RNA (lncRNA) MEG3 has proven to be an important regulator involved in the pathogenesis and development of various human diseases. However, the functional involvement of MEG3 in postmenopausal osteoporosis (PMOP) and its mechanism is still unclear. METHODS: Bone marrow mesenchymal stem cells (BMSCs) were isolated and cultured from mouse pathologic models and patients with PMOP, respectively. The expression of MEG3 and miR-133a-3p in BMSCs was detected using qRT-PCR...
March 14, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28319142/microrna-32-promotes-calcification-in-vascular-smooth-muscle-cells-implications-as-a-novel-marker-for-coronary-artery-calcification
#15
Jianghua Liu, Xinhua Xiao, Yingying Shen, Ling Chen, Canxin Xu, Heng Zhao, Ying Wu, Qinghai Zhang, Jing Zhong, Zhenwang Tang, Changhui Liu, Qiang Zhao, Yi Zheng, Renxian Cao, Xuyu Zu
Cardiovascular calcification is one of the most severe outcomes associated with cardiovascular disease and often results in significant morbidity and mortality. Previous reports indicated that epigenomic regulation of microRNAs (miRNAs) might play important roles in vascular smooth muscle cell (VSMC) calcification. Here, we identified potential key miRNAs involved in vascular calcification in vivo and investigated the role of miR-32-5p (miR-32). According to microarray analysis, we observed increased expression of miR-125b, miR-30a, and miR-32 and decreased expression of miR-29a, miR-210, and miR-320 during the progression of vascularcalcification...
2017: PloS One
https://www.readbyqxmd.com/read/28317941/magnitude-dependent-response-of-osteoblasts-regulated-by-compressive-stress
#16
Xiao-Qing Shen, Yuan-Ming Geng, Ping Liu, Xiang-Yu Huang, Shu-Yi Li, Chun-Dong Liu, Zheng Zhou, Ping-Ping Xu
The present study aimed to investigate the role of magnitude in adaptive response of osteoblasts exposed to compressive stress. Murine primary osteoblasts and MC3T3-E1 cells were exposed to compressive stress (0, 1, 2, 3, 4, and 5 g/cm(2)) in 3D culture. Cell viability was evaluated, and expression levels of Runx2, Alp, Ocn, Rankl, and Opg were examined. ALP activity in osteoblasts and TRAP activity in RAW264.7 cells co-cultured with MC3T3-E1 cells were assayed. Results showed that compressive stress within 5...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28314924/leptin-induces-osteoblast-differentiation-of-human-valvular-interstitial-cells-via-the-akt-and-erk-pathways
#17
Mickael Rosa, Camille Paris, Yoann Sottejeau, Delphine Corseaux, Emmanuel Robin, Madjid Tagzirt, Francis Juthier, Ramadan Jashari, Antoine Rauch, André Vincentelli, Bart Staels, Eric Van Belle, Sophie Susen, Annabelle Dupont
AIMS: Calcific aortic valve disease (CAVD) affects 2-6% of the population over 65 years, and age, gender, smoking, overweight, dyslipidemia, diabetes contribute to the development of this disease. CAVD results, in part, from the osteoblast differentiation of human valvular interstitial cells (VICs). This study aims to elucidate the effects of leptin on osteoblast phenotype of VICs and the signalling pathways involved. METHODS: Patients who underwent aortic valve replacement for CAVD (n = 43) were included in this study...
March 18, 2017: Acta Diabetologica
https://www.readbyqxmd.com/read/28304382/inhibition-of-cathepsin-k-promotes-osseointegration-of-titanium-implants-in-ovariectomised-rats
#18
Chun Yi, Ke-Yi Hao, Ting Ma, Ye Lin, Xi-Yuan Ge, Yu Zhang
The bone mineral deficiency in osteoporosis poses a threat to the long-term outcomes of endosseous implants. The inhibitors of cathepsin K (CatK) significantly affect bone turnover, bone mineral density (BMD) and bone strength in the patients with osteoporosis. Therefore, we hypothesised that the application of a CatK inhibitor (CatKI) could increase the osseointegration of endosseous implants under osteoporotic conditions. Odanacatib (ODN), a highly selective CatKI, was chosen as the experimental drug. Sixteen rats were randomised into 4 groups: sham, ovariectomy (OVX) with vehicle, OVX with low-dose ODN (5 mg/kg) and OVX with high-dose ODN (30 mg/kg)...
March 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28302667/novel-device-for-application-of-continuous-mechanical-tensile-strain-to-mammalian-cells
#19
Satoshi Wada, Hiroyuki Kanzaki, Tsuyoshi Narimiya, Yoshiki Nakamura
During orthodontic tooth movement, the periodontal ligament (PDL) is exposed to continuous mechanical strain. However, many researchers have applied cyclic tensile strain, not continuous tensile strain, to PDL cells in vitro, because there has been no adequate device to apply continuous tensile strain to cultured cells. In this study, we contrived a novel device designed to apply continuous tensile strain to cells in culture. The continuous tensile strain was applied to human immortalized periodontal ligament cell line (HPL cells) and the cytoskeletal structures of HPL cells were examined by immunohistochemistry...
March 16, 2017: Biology Open
https://www.readbyqxmd.com/read/28302495/neural-egfl-like-1-is-a-downstream-regulator-of-runt-related-transcription-factor-2-in-chondrogenic-differentiation-and-maturation
#20
Chenshuang Li, Jie Jiang, Zhong Zheng, Kevin S Lee, Yanheng Zhou, Eric Chen, Cymbeline T Culiat, Yiqiang Qiao, Xuepeng Chen, Kang Ting, Xinli Zhang, Chia Soo
Recent studies indicate that neural EGFL-like 1 (Nell-1), a secretive extracellular matrix molecule, is involved in chondrogenic differentiation. Herein, we demonstrated that Nell-1 serves as a key downstream target of runt-related transcription factor 2 (Runx2), a central regulator of chondrogenesis. Unlike in osteoblast lineage cells where Nell-1 and Runx2 demonstrate mutual regulation, further studies in chondrocytes revealed that Runx2 tightly regulates the expression of Nell-1; however, Nell-1 does not alter the expression of Runx2...
March 13, 2017: American Journal of Pathology
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