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Osteopontin

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https://www.readbyqxmd.com/read/28108614/osteopontin-and-protein-kinase-c-regulate-pdlim2-activation-and-stat1-ubiquitination-in-lps-treated-murine-macrophages
#1
Hongtao Guo, Zhiyong Mi, Dawn E Bowles, Syamal D Bhattacharya, Paul C Kuo
No abstract text is available yet for this article.
January 20, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28107808/in-situ-release-of-vegf-enhances-osteogenesis-in-3d-porous-scaffolds-engineered-with-osterix-modified-adipose-derived-stem-cells
#2
Wan-Lin Xu, Hui-Shan Ong, Yun Zhu, Sheng-Wen Liu, Li-Min Liu, Kai-Hua Zhou, Zeng-Qi Xu, Jun Gao, Yan Zhang, Jin-Hai Ye, Wen-Jun Yang
Adipose-derived stem cells (ADSCs) can differentiate into various cell types and thus have great potential for regenerative medicine. Herein, rat ADSCs were isolated; transduced with lentiviruses expressing Osterix (Osx), a transcriptional factor essential for osteogenesis. Osx overexpression up-regulated key osteogenesis-related genes, such as special AT-rich binding protein 2, alkaline phosphatase, osteocalcin and osteopontin, at both the mRNA and protein levels. In addition, mineral nodule formation and alkaline phosphatase activity were enhanced in Osx-overexpressing ADSCs...
January 20, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28107503/osteopontin-affects-insulin-vesicle-localization-and-ca2-homeostasis-in-pancreatic-beta-cells-from-female-mice
#3
Anna Wendt, Inês G Mollet, Anki Knutsson, Victor S Bolmgren, Anna Hultgårdh-Nilsson, Maria F Gomez, Lena Eliasson
Type 2 diabetic patients suffer from insulin resistance and reduced insulin secretion. Osteopontin (OPN), a versatile protein expressed in several tissues throughout the body including the islets of Langerhans, has previously been implicated in the development of insulin resistance. Here we have investigated the role of OPN in insulin secretion using an OPN knock out mouse model (OPN-/-). Ultra-structural analyzes of islets from OPN-/- and WT mice indicated weaker cell-cell connections between the islet cells in the OPN-/- mouse compared to WT...
2017: PloS One
https://www.readbyqxmd.com/read/28106017/relationship-between-serum-osteopontin-level-and-atrial-fibrillation-recurrence-in-patients-undergoing-cryoballoon-catheter-ablation
#4
Hacı Murat Güneş, Gamze Babur Güler, Ekrem Güler, Gültekin Günhan Demir, Filiz Kızılırmak Yılmaz, Mehmet Onur Omaygenç, Ayşe İstanbullu Tosun, Taylan Akgün, Bilal Boztosun, Fethi Kılıçarslan
OBJECTIVE: Atrial fibrillation (AF) is the most common sustained arrhythmia and is associated with increased morbidity and mortality. Atrial fibrosis augments recurrence rate following AF catheter ablation. Osteopontin is a multifunctional molecule involved in several pathophysiological pathways, including fibrosis. Presently described is investigation of relationship between serum osteopontin level and AF recurrence after AF cryoablation. METHODS: The study was designed to be prospective and observational; 60 patients with paroxysmal (n=47) and persistent (n=13) AF were included...
January 2017: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/28105936/pathways-of-aging-comparative-analysis-of-gene-signatures-in-replicative-senescence-and-stress-induced-premature-senescence
#5
Kamil C Kural, Neetu Tandon, Mikhail Skoblov, Olga V Kel-Margoulis, Ancha V Baranova
BACKGROUND: In culturing normal diploid cells, senescence may either happen naturally, in the form of replicative senescence, or it may be a consequence of external challenges such as oxidative stress. Here we present a comparative analysis aimed at reconstruction of molecular cascades specific for replicative (RS) and stressinduced senescence (SIPS) in human fibroblasts. RESULTS: An involvement of caspase-3/keratin-18 pathway and serine/threonine kinase Aurora A/ MDM2 pathway was shared between RS and SIPS...
December 28, 2016: BMC Genomics
https://www.readbyqxmd.com/read/28104821/the-urine-preservative-acetic-acid-degrades-urine-protein-implications-for-urine-biorepositories-and-the-aask-cohort-study
#6
Salem Almaani, Lee A Hebert, Brad H Rovin, Daniel J Birmingham
Patients enrolled in the African American Study of Kidney Disease and Hypertension (AASK) Cohort Study who exhibited overt proteinuria have been reported to show high nonalbumin proteinuria (NAP), which is characteristic of a tubulopathy. To determine whether African American Study of Kidney Disease and Hypertension nephropathy (AASK-N) is a tubulopathy, we obtained urine samples of 37 patients with AASK-N, with 24-hour protein-to-creatinine ratios (milligrams per milligram) ranging from 0.2 to 1.0, from the National Institute of Diabetes and Digestive Kidney Diseases repository and tested for seven markers of tubular proteinuria...
January 19, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28101531/osteopontin-is-a-blood-biomarker-for-microglial-activation-and-brain-injury-in-experimental-hypoxic-ischemic-encephalopathy
#7
Yikun Li, Eric B Dammer, Xiaohui Zhang-Brotzge, Scott Chen, Duc M Duong, Nicholas T Seyfried, Chia-Yi Kuan, Yu-Yo Sun
Clinical management of neonatal hypoxic-ischemic encephalopathy (HIE) suffers from the lack of reliable surrogate marker tests. Proteomic analysis may identify such biomarkers in blood, but there has been no proof-of-principle evidence to support this approach. Here we performed in-gel trypsin digestion of plasma proteins from four groups of 10-d-old mice [untouched and 24 h after low-dose lipopolysaccharide (LPS) exposure, hypoxia-ischemia (HI), or LPS/HI injury; n = 3 in each group) followed by liquid chromatography-tandem mass spectrometry and bioinformatics analysis to search for HI- and LPS/HI-associated brain injury biomarkers...
January 2017: ENeuro
https://www.readbyqxmd.com/read/28101213/osteopontin-improves-adhesion-and-migration-of-human-primary-renal-cortical-epithelial-cells-during-wound-healing
#8
Jinfeng Wu, Zuolin Wang
The aim of the present study was to investigate the effect of osteopontin (OPN) on adhesion and migration in human primary renal cortical epithelial cells during wound healing and Transwell assays. MTT assay was used to examine the cell viability and western blot analysis was used to examine the expression of cytoskeletal proteins and cell adhesion molecules. The results showed that overexpression of OPN had positive effects on the viability, proliferation, adhesion and migration of the human primary renal cortical epithelial cells...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28101179/study-of-the-functional-mechanisms-of-osteopontin-and-chemokine-like-factor-1-in-the-development-and-progression-of-abdominal-aortic-aneurysms-in-rats
#9
Jun Li, Xia Bao, Yongxin Li, Yuewei Wang, Zonggang Zhao, Xing Jin
The aim of the study was to investigate the functional mechanisms of osteopontin (Opn) and chemokine-like factor 1 (Cklf1) during the development and progression of abdominal aortic aneurysms (AAA) in rats. Healthy adult Sprague-Dawley rats (n=30) were randomly divided into the AAA, control and sham groups (10 rats/group) and experimental rat models of AAA were generated by enzyme perfusion in abdominal aorta for 30 min. The AAA formation was assessed by measuring the aortal diameter and hematoxylin and eosin staining as well as specific staining to detect the structural changes of the aorta and inflammatory cell infiltration...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28101173/particularly-interesting-cys-his-rich-protein-is-highly-expressed-in-human-intracranial-aneurysms-and-resists-aneurysmal-rupture
#10
Yu-Tao Peng, Xiang-En Shi, Zhi-Qiang Li, Xin He, Yu-Ming Sun
Particularly interesting Cys-His-rich protein (PINCH) has several biological functions in cancer development, invasion and metastasis in malignant cells, and the expression of PINCH is upregulated in several cancer types, including breast cancer, gastric adenocarcinoma and rectal cancer. However, the contribution of PINCH to human cerebral aneurysms remains largely unknown. Therefore, the significance of PINCH expression in cerebral aneurysm growth and rupture was examined in the present study. The protein expression levels of alpha-smooth muscle actin, osteopontin (OPN), matrix metalloproteinase (MMP) 9 and PINCH were evaluated using immunohistochemistry and western blot analyses...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28098877/differentiation-of-osteoblast%C3%A2-like-cells-and-ectopic-bone-formation-induced-by-bone-marrow-stem-cells-transfected-with-chitosan-nanoparticles-containing-plasmid%C3%A2-bmp2-sequences
#11
Zhang Qing Hong, Liu Meng Tao, Zhang Xiao Bin
The present study investigated the efficiency of the use of chitosan nanoparticles containing plasmid‑bone morphogenetic protein 2 (pBMP2) sequences (CNPBs) to induce the differentiation of bone marrow stem cells (BMSCs) into osteoblast‑like cells that may be able to promote ectopic bone formation. pBMP2s were constructed, and chitosan nanoparticles were incubated with 50, 100 or 200 µg/ml pBMP2. BMSCs were collected from the tibiae and femurs of 6‑week old rats, cultured and treated with the CNPBs or 200 µg/ml pBMP2 as a positive control...
January 17, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28097053/in-vitro-effect-of-direct-current-electrical-stimulation-on-rat-mesenchymal-stem-cells
#12
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/28095066/association-of-osteopontin-gene-polymorphisms-with-colorectal-cancer
#13
Asmaa Kamal, Rania Kamal Darwish, Samar Saad, Mohamed Salama, Tarek S El-Baradie, Heba G M Mahmoud, Yasmine Elshiwy
We investigated the association of the Osteopontin (OPN) (rs9138 and rs1126616) polymorphisms with colorectal cancer (CRC). One hundred CRC patients and 112 healthy individuals were subjected to OPN (rs9138 and rs1126616) genotyping and measurement of OPN protein plasma level. The C allele of OPN rs1126616 and the CC haplotype were significantly higher in CRC patient (p = 0.036, 0.003, respectively). In females, the C allele of OPN rs9318 (A/C) polymorphism was significantly associated with increased CRC risk (p = 0...
January 17, 2017: Cancer Investigation
https://www.readbyqxmd.com/read/28091516/osteopontin-regulates-macrophage-activation-and-osteoclast-formation-in-hypertensive-patients-with-vascular-calcification
#14
Qian Ge, Cheng-Chao Ruan, Yu Ma, Xiao-Feng Tang, Qi-Hong Wu, Ji-Guang Wang, Ding-Liang Zhu, Ping-Jin Gao
Vascular calcification (VC) is a highly regulated ectopic mineral deposition process involving immune cell infiltration in the vasculatures, which has been recognized to be promoted by hypertension. The matricellular glycoprotein osteopontin (OPN) is strongly induced in myeloid cells as a potential inflammatory mediator of vascular injury. This study aims to examine whether OPN is involved in the regulation of macrophage activation and osteoclast formation in hypertensive subjects with VC. We firstly found an increased proportion of CD11c+CD163- pro-inflammatory peripheral monocytes in hypertensive subjects with VC compared to those without VC by flow cytometric analysis...
January 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28090705/osteogenic-differentiation-potential-of-adipose-derived-stem-cells-from-ovariectomized-mice
#15
Lei Wang, Chenglong Huang, Qing Li, Xiaomei Xu, Lin Liu, Kui Huang, Xiaoxiao Cai, Jingang Xiao
OBJECTIVES: Osteoporosis (OP) is a systemic disease caused by imbalance between bone resorption and bone formation, commonly resulting from post-menopausal oestrogen deficiency. Although osteogenic differentiation potential of adipose-derived stem cells (ASCs) has been demonstrated, the effect of OP on osteogenic differentiation of ASCs remains unclear. Here, our work has been designed to compare proliferative capacity and osteogenic differentiation ability of ASCs obtained from osteoporotic mice and normal control mice...
January 16, 2017: Cell Proliferation
https://www.readbyqxmd.com/read/28078828/biomarkers-upon-discontinuation-of-renal-replacement-therapy-predict-60-day-survival-and-renal-recovery-in-critically-ill-patients-with-acute-kidney-injury
#16
Tingting Yang, Si Sun, Yuliang Zhao, Qiang Liu, Mei Han, Liping Lin, Baihai Su, Songmin Huang, Lichuan Yang
Introduction There is no consensus on the specific indications for weaning critically ill patients with acute kidney injury (AKI) off renal replacement therapy (RRT). This study aimed to explore the prognostic value of several biomarkers measured upon discontinuation of RRT for their value in predicting 60-day survival and renal recovery in an effort to add knowledge to the decision-making process regarding RRT withdrawal. Methods We prospectively enrolled 102 patients with AKI who required RRT from the intensive care unit...
January 11, 2017: Hemodialysis International
https://www.readbyqxmd.com/read/28077779/embryonic-exposure-to-tcdd-impacts-osteogenesis-of-the-axial-skeleton-in-japanese-medaka-oryzias-latipes
#17
AtLee T D Watson, Antonio Planchart, Carolyn J Mattingly, Christoph Winkler, David M Reif, Seth W Kullman
Recent studies from mammalian, fish, and in vitro models have identified bone and cartilage development as sensitive targets for dioxins and other aryl hydrocarbon receptor ligands. In this study, we assess how embryonic 2,3,7,8-tetrachlorochlorodibenzo-p-dioxin (TCDD) exposure impacts axial osteogenesis in Japanese medaka (Oryzias latipes), a vertebrate model of human bone development. Embryos from inbred wild-type Orange-red Hd-dR and 3 transgenic medaka lines (twist:EGFP, osx/sp7:mCherry, col10a1:nlGFP) were exposed to 0...
November 15, 2016: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28075446/nf%C3%A2-%C3%AE%C2%BAb-inhibition-is-associated-with-opn-mmp%C3%A2-9-downregulation-in-cutaneous-melanoma
#18
Claudio Guarneri, Valentina Bevelacqua, Jerry Polesel, Luca Falzone, Patrizia S Cannavò, Demetrios A Spandidos, Grazia Malaponte, Massimo Libra
The development of cutaneous melanoma is influenced by genetic factors, including BRAF mutations and environmental factors, such as ultraviolet exposure. Its progression has been also associated with the involvement of several tumour microenvironmental molecules. Among these, nuclear factor‑κB (NF‑κB) has been indicated as a key player of osteopontin (OPN) and matrix metalloproteinase‑9 (MMP‑9) activation. However, whether NF‑κB plays a role in the development and progression of melanoma in association with the OPN/MMP‑9 axis according to the BRAFV600E mutation status has not been investigated in detail to date...
February 2017: Oncology Reports
https://www.readbyqxmd.com/read/28075407/diagnostic-value-of-serum-angiogenesis-markers-in-ovarian-cancer-using-multiplex-immunoassay
#19
Agnieszka Horala, Agata Swiatly, Jan Matysiak, Paulina Banach, Ewa Nowak-Markwitz, Zenon J Kokot
As cancer development involves pathological vessel formation, 16 angiogenesis markers were evaluated as potential ovarian cancer (OC) biomarkers. Blood samples collected from 172 patients were divided based on histopathological result: OC (n = 38), borderline ovarian tumours (n = 6), non-malignant ovarian tumours (n = 62), healthy controls (n = 50) and 16 patients were excluded. Sixteen angiogenesis markers were measured using BioPlex Pro Human Cancer Biomarker Panel 1 immunoassay. Additionally, concentrations of cancer antigen 125 (CA125) and human epididymis protein 4 (HE4) were measured in patients with adnexal masses using electrochemiluminescence immunoassay...
January 10, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28072837/locally-produced-bdnf-promotes-sclerotic-change-in-alveolar-bone-after-nerve-injury
#20
Hiroko Ida-Yonemochi, Yurie Yamada, Hiroyuki Yoshikawa, Kenji Seo
Brain-derived neurotrophic factor (BDNF), which is released due to nerve injury, is known to promote the natural healing of injured nerves. It is often observed that damage of mandibular canal induces local sclerotic changes in alveolar bone. We reported that peripheral nerve injury promotes the local production of BDNF; therefore, it was possible to hypothesize that peripheral nerve injury affects sclerotic changes in the alveolar bone. This study aimed to evaluate the effect of BDNF on osteogenesis using in vitro osteoblast-lineage cell culture and an in vivo rat osteotomy model...
2017: PloS One
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