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https://www.readbyqxmd.com/read/28524237/in-vitro-dialysis-of-cytokine-rich-plasma-with-high-and-medium-cut-off-membranes-reduces-its-procalcific-activity
#1
Kevin Willy, Michael Hulko, Markus Storr, Rose Speidel, Julia Gauss, Ralf Schindler, Daniel Zickler
Recently developed high-flux (HF) dialysis membranes with extended permeability provide better clearance of middle-sized molecules such as interleukins (ILs). Whether this modulation of inflammation influences the procalcific effects of septic plasma on vascular smooth muscle cells (VSMCs) is not known. To assess the effects of high cut-off (HCO) and medium cut-off (MCO) membranes on microinflammation and in vitro vascular calcification we developed a miniature dialysis model. Plasma samples from lipopolysaccharide-spiked blood were dialyzed with HF, HCO, and MCO membranes in an in vitro miniature dialysis model...
May 19, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28517970/osteoblast-progenitors-enhance-osteogenic-differentiation-of-periodontal-ligament-stem-cells
#2
Miao Yu, Limei Wang, Pengfei Ba, Linxia Li, Long Sun, Xiaoqi Duan, Pishan Yang, Chengzhe Yang, Qinfeng Sun
BACKGROUND: Osteoblasts and periodontal ligament stem cells (PDLSCs) play an important role in maintaining physiological function of periodontal tissues and participating in periodontal regeneration. Elucidation of interactions between osteoblasts and PDLSCs will aid understanding of periodontal regeneration mechanisms. This study aimed to determine whether pre-osteoblasts can promote osteoblastic/cementoblastic differentiation of PDLSCs. METHODS: PDLSCs were cultured alone (control group), or co-cultured indirectly with human gingival fibroblasts (HGFs) (HGFs group) or MC3T3-E1 cells (OB groups)...
May 18, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28505114/osteopontin-deficiency-suppresses-intestinal-tumor-development-in-apc-deficient-min-mice
#3
Rikako Ishigamori, Masami Komiya, Shinji Takasu, Michihiro Mutoh, Toshio Imai, Mami Takahashi
Osteopontin (OPN) is a secreted phosphoglycoprotein, and is a transcriptional target of aberrant Wnt signaling. OPN is upregulated in human colon cancers, and is suggested to enhance cancer progression. In this study, the effect of deficiency of OPN on intestinal tumor development in Apc-deficient Min mice was investigated. At 16 weeks of age, the number of small intestinal polyps in Min/OPN(+/-) and Min/OPN(-/-) mice was lower than that of Min/OPN(+/+) mice. Colorectal tumor incidences and multiplicities in Min/OPN(+/-) and Min/OPN(-/-) mice were significantly lower than those in Min/OPN(+/+) mice, being 48% and 0...
May 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28499311/evaluation-of-bone-mineral-density-in-children-with-type-i-diabetes-mellitus-and-relationship-to-serum-levels-of-osteopontin
#4
Forough Saki, Abdolkarim Sheikhi, Gholam Hosein Ranjbar Omrani, Hamid Karimi, Mohammad Hossein Dabbaghmanesh, Seyed Nouraddin Mousavinasab
Type I diabetes mellitus (T1DM) patients are at risk of osteoporosis and fracture due to the osteoblast and osteoclast malfunction. Osteopontin (OPN) as the major non-collagenous bone matrix protein is produced by osteoblasts and osteoclasts and involve in bone resorption, formation and remodeling. To evaluate the serum levels of OPN, bone mineral density (BMD) and correlation in patients with T1DM this study was designed. In this case-control study, 87 children with T1DM and 87 age/sex-matched healthy subjects were enrolled...
May 12, 2017: Drug Research
https://www.readbyqxmd.com/read/28496027/expression-profile-of-matricellular-proteins-in-hypertrophied-right-ventricle-of-monocrotaline-induced-pulmonary-hypertensive-rats
#5
Keisuke Imoto, Muneyoshi Okada, Hideyuki Yamawaki
Matricellular proteins, a non-structural extracellular matrix (ECM) component, bind to and modulate various molecules including growth factor, cytokine, protease, other ECM components and cell membrane receptors. While most matricellular proteins are hardly expressed in normal adult tissue, they are re-expressed in heart tissue during cardiac diseases. The present study aimed to clarify the mRNA expression profile of matricellular proteins [secreted protein acidic and rich in cysteine: SPARC, hevin, thrombospondin (TSP)-1, -2 and -4, CCN1 and 5, tenascin (Tn)C and N, periostin and osteopontin (OPN)] in hypertrophied right ventricle (RV) of monocrotaline (MCT)-induced pulmonary hypertensive rats...
May 11, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28486352/behavior-of-mc3t3-e1-osteoblastic-cells-cultured-on-titanium-and-zirconia-surfaces-an-in-vitro-study
#6
Ricardo Gapski, Elizabeth Ferreira Martinez
PURPOSE: The goal from this in vitro study was to evaluate osteoblast protein expression of collagen type 1 (col 1) and osteopontin (OPN) on titanium surface treated with double etching compared with a zirconia implant surface. MATERIALS AND METHODS: Discs were selected on both surfaces with respective treatments. Mouse MC3T3-E1 osteoblastic cells were tested for cell viability using the MTT assay. Subsequently, the quantification of col 1 and OPN secreted by osteoblastic cells plated on different surfaces was evaluated by enzyme linked immunosorbent assay (ELISA)...
May 8, 2017: Implant Dentistry
https://www.readbyqxmd.com/read/28482579/tio2-nanorod-arrays-modified-ti-substrates-promote-the-adhesion-proliferation-and-osteogenic-differentiation-of-human-periodontal-ligament-stem-cells
#7
Zhi Li, Jichuan Qiu, Ling Qian Du, Lu Jia, Hong Liu, Shaohua Ge
Nanostructure coating on titanium (Ti) implants is well known as a cue for directing osteoblast behavior and function. However, effects of nanostructure coatings on dental stem cells have been rarely explored. In this work, assembled TiO2 nanorod arrays (TNRs) were fabricated on the polished Ti substrates using hydrothermal and sintering methods. The adhesion, morphology, proliferation and osteogenic differentiation of human periodontal ligament stem cells (PDLSCs) seeded onto TNRs substrates were evaluated...
July 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28479681/immunolocalization-of-osteopontin-in-dysplasias-and-squamous-cell-carcinomas-arising-from-oral-epithelium
#8
Thara Aravind, Mahija Janardhanan, S Rakesh, Vindhya Savithri, U G Unnikrishnan
BACKGROUND: Early detection of oral squamous cell carcinoma (OSCC) remains one of the most efficient ways to ensure patient survival and improved quality of life. Although specific biomarkers related to OSCC have been investigated, a useful biomarker that assesses the transition potential of potentially malignant lesion to OSCC remains to be found. Osteopontin (OPN) has been recognized as an important factor in tumorigenesis and their expression in OSCC have been investigated earlier...
January 2017: Journal of Oral and Maxillofacial Pathology: JOMFP
https://www.readbyqxmd.com/read/28478803/peptide-11r-vivit-stimulates-osteoblastogenesis-through-regulating-the-expression-of-nuclear-factor-of-activated-t-cells-cytoplasmic-1
#9
M Li, X Wang, Z Bian, W Yao, Q He, F Tian, J Zhang, L Zhu
Osteoporosis is characterized by the imbalance of two relatively independent processes-osteoblastogenesis and osteoclastogenesis. Calcineurin (Cn)/nuclear factor of activated T cells (NFAT)(Cn/NFAT) signaling pathway is involved in these two processes in bone metabolism, but its potential as a target to treat osteoporosis needs to be defined. The aim of this study is to investigate the inhibition of polypeptide 11R-VIVIT onCn/NFAT signaling pathway. Rat calvaria (RC) cells were prepared from experimental model of osteoporosis in rat...
April 29, 2017: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/28471397/mir-365-ameliorates-dexamethasone-induced-suppression-of-osteogenesis-in-mc3t3-e1-cells-by-targeting-hdac4
#10
Daohua Xu, Yun Gao, Nan Hu, Longhuo Wu, Qian Chen
Glucocorticoid administration is the leading cause of secondary osteoporosis. In this study, we tested the hypotheses that histone deacetylase 4 (HDAC4) is associated with glucocorticoid-induced bone loss and that HDAC4 dependent bone loss can be ameliorated by miRNA-365. Our previous studies showed that miR-365 mediates mechanical stimulation of chondrocyte proliferation and differentiation by targeting HDAC4. However, it is not clear whether miR-365 has an effect on glucocorticoid-induced osteoporosis. We have shown that, in MC3T3-E1 osteoblasts, dexamethasone (DEX) treatment decreased the expression of miR-365, which is accompanied by the decrease of cell viability in a dose-dependent manner...
May 4, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28469774/effects-of-altered-cxcl12-cxcr4-axis-on-bmp2-smad-runx2-osterix-axis-and-osteogenic-gene-expressions-during-osteogenic-differentiation-of-mscs
#11
Zhanghua Li, Wei Wang, Haijia Xu, Yu Ning, Weijun Fang, Wen Liao, Ji Zou, Yi Yang, Ningsheng Shao
This study investigated the effects of altered CXCL12/CXCR4 axis on the bone morphogenetic protein 2 (BMP-2)/Smad/runt-related transcription factor 2 (Runx2)/Osterix (Osx) signal axis and osteogenic gene expression during osteogenic differentiation of mesenchymal stem cells (MSCs), to gain understanding of the link between migration and osteogenic differentiation signal axis and MSCs osteogenic differentiation mechanisms. The pHBAd-MCMV- CXCL12-GFP vector (Ad-CXCL12) was constructed and quantitative polymerase chain reaction (qPCR)/western blotting used to determine CXCL12 expression in Ad-CXCL12-transfected MSCs...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28467973/decreased-wwox-expression-promotes-angiogenesis-in-osteosarcoma
#12
Jia Wen, Zongchao Xu, Jiazhen Li, Yingqiang Zhang, Wenzhe Fan, Yu Wang, Mingjian Lu, Jiaping Li
WWOX (WW domain-containing oxidoreductase) is known to be an important tumor suppressor in cancer. In this study, we used samples from 201 osteosarcoma patients to investigate the effects of WWOX on angiogenesis and invasion. WWOX levels were negatively correlated with RUNX2 and VEGF levels, but were not correlated with OPN levels. Among the clinicopathological characteristics examined, WWOX was associated only with response to neoadjuvant chemotherapy, and its expression in osteosarcoma tissues was a predictor of disease-free survival...
April 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28462510/runx2-alleviates-high-glucose-suppressed-osteogenic-differentiation-via-pi3k-akt-gsk3%C3%AE-%C3%AE-catenin-pathway
#13
Yang Chen, Yun Hu, Lan Yang, Jie Zhou, Yuying Tang, Leilei Zheng, Pu Qin
Hyperglycemia is one of the most important pathogenesis of diabetic osteopathy. Several lines of studies indicate Runx2 plays a critical role in the process of osteogenic differentiation. However, little studies have analysed the effect of Runx2 on osteoblast differentiation of rat bone mesenchymal stem cells (rBMSCs) in high glucose condition. In this study, the effect of Runx2 on osteoblast differentiation in high glucose condition was evaluated by the expression of osteogenesis-related maker including Runx2, ALP, OC and OPN, as well as ALP staining, ALP activity and Alizarin red S staining...
April 29, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28460412/mir-615-3p-inhibits-the-osteogenic-differentiation-of-human-lumbar-ligamentum-flavum-cells-via-suppression-of-osteogenic-regulators-gdf5-and-foxo1
#14
Jichao Yin, Guihua Zhuang, Yi Zhu, Xinglv Hu, Hongmou Zhao, Rongqiang Zhang, Hao Guo, Xiaochen Fan, Yi Cao
Ossification of the ligamentum flavum (OLF) is a disease of heterotopic ossification in spinal ligaments. The key of the OLF pathogenesis is the differentiation of fibroblasts into osteoblasts. In this study, we explored the role of miR-615-3p in the osteogenic differentiation of human LF cells. The expression of miR-615-3p was detected during the osteogenic differentiation of hFOB1.19 human osteoblasts, human BMSCs and human LF cells. The qPCR results showed that miR-615-3p was being decreased during the osteogenic differentiation of these cell lineages...
April 29, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28456769/neuroprotective-effect-of-resveratrol-against-late-cerebral-ischemia-reperfusion-induced-oxidative-stress-damage-involves-upregulation-of-osteopontin-and-inhibition-of-interleukin-1beta
#15
H Al Dera
This study was carried out to investigate the expression pattern and role of osteopontin (OPN) in late global ischemia-reperfusion (I/R) injury with or without resveratrol (RES) pre-treatment. Young male rats were divided into 3 groups (n = 12) of I) sham, II) I/R model group and III) I/R + RES. Vehicle and RES (20 mg/kg) were administered to designed groups intraperitoneally 30 days prior global I/R injury (2-VO) induction and continued for 7 days, later. Then, percentages of infarct areas, mRNA levels of OPN, inducible nitric oxide synthase (iNOS) and other biochemical parameter related to endogenous antioxidants activities and inflammation were measured in the cerebral cortices of all groups...
February 2017: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/28454497/microrna-34a-alleviates-steroid-induced-avascular-necrosis-of-femoral-head-by-targeting-tgif2-through-opg-rank-rankl-signaling-pathway
#16
Wu-Xun Peng, Chuan Ye, Wen-Tao Dong, Lei-Luo Yang, Chun-Qing Wang, Ze-An Wei, Jian-Hua Wu, Qing Li, Jin Deng, Jian Zhang
The study aims to investigate the effect of microRNA-34a (miR-34a) targeting Tgif2 on steroid-induced avascular necrosis of femoral head (SANFH) by regulating OPG/RANK/RANKL signaling pathway. SD rats were divided into normal control and model (RNAKL rat models) groups. The model group was further assigned into model control, negative control, miR-34a mimics and miR-34a inhibitors groups. QRT-PCR was applied to detect miR-34a, Tgif2, OPG, RANK and RNAKL mRNA expressions. Femoral head tissues were collected for Micro-CT scanning and HE staining...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28453726/osteopontin-rna-aptamer-can-prevent-and-reverse-pressure-overload-induced-heart-failure
#17
Jihe Li, Keyvan Yousefi, Wen Ding, Jayanti Singh, Lina A Shehadeh
Aims: Cardiac myocyte hypertrophy, the main compensatory response to chronic stress in the heart often progresses to a state of decompensation that can lead to heart failure. Osteopontin (OPN) is an effector for extracellular signalling that induces myocyte growth and fibrosis. Although increased OPN activity has been observed in stressed myocytes and fibroblasts, the detailed and long term effects of blocking OPN signalling on the heart remain poorly defined. Targeting cardiac OPN protein by an RNA aptamer may be beneficial for tuning down OPN pathologic signalling...
May 1, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28452332/function-and-mechanism-of-mesoporous-bioactive-glass-adsorbed-epidermal-growth-factor-for-accelerating-bone-tissue-regeneration
#18
Xiaoyan Wang, Wei Chen, Qianqian Liu, Kai Gao, Gan Wang, Li Gao, Long Liu
Mesoporous bioactive glass (MBG) has been demonstrated to play a vital role in bone tissue engineering due to its bioactivity, biocompatibility, and osteoinduction properties. Here, we report that MBG grafted with an amino group (MBG-NH2) and MBG-NH2 adsorbed epidermal growth factor (EGF) (MBG-NH2/EGF) sustained-release EGF, and MBG-NH2/EGF could accelerate osteoblast differentiation and mineralization in MC3T3-E1 cells. We found that MBG-NH2 could promote bone-like deposit formation and Ca deposition in vitro...
April 28, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/28446225/the-crosstalk-between-vascular-mscs-and-inflammatory-mediators-determines-the-pro-calcific-remodelling-of-human-atherosclerotic-aneurysm
#19
Carmen Ciavarella, Enrico Gallitto, Francesca Ricci, Marina Buzzi, Andrea Stella, Gianandrea Pasquinelli
BACKGROUND: Human mesenchymal stem cells (MSCs) possess well-known reparative abilities, but any defect of the immunomodulatory activity and/or the differentiation process may determine the development of human diseases, including those affecting the vascular wall. MSCs residing within the human aortic wall represent a potential cell mediator of atherosclerotic aneurysm development. METHODS: MSCs isolated from healthy and aneurysm aortas were characterized by flow cytometer and tested for differentiation properties...
April 26, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28445262/dose-dependence-of-pth-related-peptide-1-on-the-osteogenic-induction-of-mc3t3-e1-cells-in-vitro
#20
Jianping Wang, Jingfeng Li, Liang Yang, Yichi Zhou, Yi Wang
Parathyroid hormone (PTH), an 84-amino acid peptide, is an endocrine hormone that is secreted by parathyroid glands. PTH performs important functions in calcium regulation and bone remodeling. The PTH (1-34) named teriparatide, a 34-amino acid peptide derived from the N-terminus of PTH, conserves most of the functions of PTH, specifically the osteogenic capability. However, teriparatide is only used by injection and exhibits short duration. In addition, this PTH could not thoroughly expose active sites. In this study, a novel PTH-related peptide (designated PTHrP-1) derived from the N-terminus of PTH was added into the complete medium at different concentrations of PTHrP-1 (0, 50, 100, and 200 ng/mL) to induce the MC3T3-E1 cells...
April 2017: Medicine (Baltimore)
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