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Bone specific alkaline phosphatase

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https://www.readbyqxmd.com/read/29152645/mir-214-promotes-periodontal-ligament-stem-cell-osteoblastic-differentiation-by-modulating-wnt-%C3%AE-%C3%A2-catenin-signaling
#1
Fengdi Cao, Jialin Zhan, Xufeng Chen, Kai Zhang, Renfa Lai, Zhiqiang Feng
The canonical Wnt/β‑catenin signaling is important in the differentiation of human mesenchymal stem cells into osteoblasts. Accumulating evidence suggests that the expression of β‑catenin is, in part, regulated by specific microRNAs (miRNAs). The aim of the present study was to investigate the putative roles of miRNAs in osteoblast differentiation. Polymerase chain reaction (PCR) arrays were used to identify miRNAs that were differentially expressed between differentiated and non‑differentiated periodontal ligament stem cells (PDLSCs), and reverse transcription‑quantitative PCR (RT‑qPCR) was used for validation...
October 19, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29151982/the-effect-of-low-magnitude-low-frequency-vibrations-lmlf-on-osteogenic-differentiation-potential-of-human-adipose-derived-mesenchymal-stem-cells
#2
Monika Marędziak, Daniel Lewandowski, Krzysztof A Tomaszewski, Krzysztof Kubiak, Krzsztof Marycz
Introduction: In the current study, we investigated the effect of low magnitude, low frequency (LMLF) mechanical vibrations on the osteogenic differentiation potential of human adipose derived mesenchymal stem cells (hASC), taken from elderly patients. Methods: During 21 days in osteogenic culture medium, cells were periodically exposed to three different frequencies (25, 35 and 45 Hz) of continuous sinusoidal oscillation, using a vibration generator. We measured cell proliferation, cell morphology, calcium and phosphorus deposition using Almar Blue assay, fluorescence microscopy, scanning electron microscopy, and a EDX detector, respectively...
2017: Cellular and Molecular Bioengineering
https://www.readbyqxmd.com/read/29151445/serum-activities-of-two-bone-markers-in-captive-asian-elephants-elephas-maximus-at-different-ages
#3
Kazuya Takehana, Kaoru Hatate, Norio Yamagishi
The blood biochemical analysis of bone markers could have a role in the early diagnosis of metabolic bone disease in animals; however, there is limited information on bone markers in captive Asian elephants (Elephas maximus). Serum samples from ten captive Asian elephants were obtained to clarify the relationship between age and the blood bone markers tartrate-resistant acid phosphatase isoform 5b (TRAP5b) and bone specific alkaline phosphatase (BALP). Serum TRAP5b and BALP activities were negatively correlated with age...
November 17, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/29150938/regulation-of-calcification-in-human-aortic-smooth-muscle-cells-infected-with-high-glucose-treated-porphyromonas-gingivalis
#4
Te-Chuan Chen, Chien-Tsong Lin, Shao-Ju Chien, Shun-Fu Chang, Cheng-Nan Chen
Porphyromonas (P.) gingivalis infection leading to the periodontitis has been associated with the development of systemic diseases, including cardiovascular diseases and diabetes. However, the effect of a high concentration of glucose (HG) on the invasion efficiency of P. gingivalis and the consequent modulation of pathogenesis in vascular cells, especially in the vascular smooth muscle cells (VSMCs), remains unclear. Hence, the aim of this study was to investigate whether treating P. gingivalis with HG could change its invasion capability and result in VSMC calcification and the underlying mechanism...
November 18, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29147721/osteomimicry-how-the-seed-grows-in-the-soil
#5
REVIEW
Nadia Rucci, Anna Teti
Metastasis is defined as a very inefficient process, since less than 0.01% of cancer cells injected into the circulation will engraft in a distant organ, where they must acquire the ability to survive and proliferate inside a "foreign" environment. In bone metastases, the interaction with the host organ is much more favoured if tumour cells gain "osteomimicry", that is the ability to resemble a resident bone cell (i.e. the osteoblast), thus intruding in the physiology of the bone. This is accomplished by the expression of osteoblast markers (e...
November 16, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/29144808/osteoporotic-fractures-during-bisphosphonate-drug-holiday-fractures-bisphosphonate-drug-holidays
#6
Brittany Bindon, William Adams, Neelam Balasubramanian, Jasmin Sandhu, Pauline Camacho
OBJECTIVE: Bisphosphonate (BP) drug holidays are recommended to lower the risk of rare adverse events, such as atypical femoral fractures and osteonecrosis of the jaw. However, there are minimal data on the optimal duration of these holidays. Our aim was to determine the clinical and laboratory parameters associated with increased fracture risk in patients on BP drug holiday. METHODS: A retrospective chart review was conducted of 401 patients with osteopenia or osteoporosis who began a BP drug holiday from 2004 to 2013...
November 16, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/29144270/alkaline-phosphatase-in-infant-cardiopulmonary-bypass-kinetics-and-relationship-to-organ-injury-and-major-cardiovascular-events
#7
Jesse A Davidson, Tracy T Urban, Christine Baird, Suhong Tong, Alan Woodruff, Mark Twite, James Jaggers, Eric A F Simões, Paul Wischmeyer
OBJECTIVES: To determine the kinetics of alkaline phosphatase (AP) activity and concentration after infant cardiopulmonary bypass, including isoform-specific changes, and to measure the association between postoperative AP activity and major postoperative cardiovascular events, organ injury/dysfunction, and postoperative support requirements STUDY DESIGN: Prospective cohort study of 120 infants ≤120 days of age undergoing cardiopulmonary bypass. AP total and isoform-specific activity was assessed at 6 time points (preoperation, rewarming, 6, 24, 48, and 72 hours postoperation)...
November 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/29142975/sclerostin%C3%A2-a-debutant-on-the-autosomal-dominant-polycystic-kidney-disease-scene
#8
Magdalena Jankowska, Mathias Haarhaus, Abdul Rashid Qureshi, Bengt Lindholm, Pieter Evenepoel, Peter Stenvinkel
Introduction: Autosomal dominant polycystic kidney disease (ADPKD) is a genetic disease originating from a mutation in genes encoding polycystin 1 and 2. Recent evidence suggests that these polycystins mediate mechanosensation not only in the primary cilium of kidney cells but also in bone cells. The Wnt/β-catenin signaling pathway plays a central role in mechanotransduction in osteocytes. Mechanical unloading causes the upregulation of the Wnt inhibitor sclerostin. We tested the hypothesis that ADPKD associates with higher circulating sclerostin levels...
May 2017: KI Reports
https://www.readbyqxmd.com/read/29129760/the-key-role-of-proinflammatory-cytokines-matrix-proteins-rankl-opg-and-wnt-%C3%AE-catenin-in-bone-healing-of-hip-arthroplasty-patients
#9
Jean Cassuto, Agnetha Folestad, Jan Göthlin, Henrik Malchau, Johan Kärrholm
INTRODUCTION: We still lack understanding of why some implants fail while most remain stable after decades of use. Proinflammatory cytokines, matrix proteins and bone regulating cytokines of the RANKL/OPG (receptor activator of nuclear factor kappa B ligand/osteoprotegerin) and Wnt/β-catenin pathways are mandatory for normal bone repair but their spatial and temporal role in the healing of primary total hip arthroplasties (THA) has not been previously shown. MATERIALS AND METHODS: Twenty-four osteoarthritis patients with one-sided well-fixed primary THA were prospectively monitored during 18years (18Y) with repeated blood samples, clinical variables and radiographs...
November 10, 2017: Bone
https://www.readbyqxmd.com/read/29125885/mir-376c-inhibits-osteoblastogenesis-by-targeting-wnt3-and-arf-gef-1-facilitated-augmentation-of-beta-catenin-transactivation
#10
Jyoti Kureel, Aijaz A John, Ravi Prakash, Divya Singh
Wnt signaling pathway plays important role in all aspects of skeletal development which include chondrogenesis, osteoblastogenesis, and osteoclastogenesis. Induction of the Wnt signaling pathway promotes bone formation while inactivation of the pathway leads to bone related disorders like osteoporosis. Wnt signaling thus has become a desired target to treat osteogenic disorders. MicroRNAs (miRNAs) represent an important category of elements that interact with Wnt signaling molecules to regulate osteogenesis...
November 10, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29118704/spontaneous-remission-of-severe-systemic-langerhans-cell-histiocytosis-with-bladder-involvement-a-case-study
#11
Isotta M Magaton, Alexandar Tzankov, Fatime Krasniqi, Christof Rottenburger, Rosanna Zanetti-Daellenbach, Peter Grendelmeier, Viola Heinzelmann-Schwarz, Michael Mayr, Fabienne D Schwab
Background: The clinical presentation of Langerhans cell histiocytosis (LCH) is heterogeneous ranging from single-organ involvement to systemic disease causing substantial morbidity and mortality. We describe an unusual course of severe multisystem LCH with spontaneous remission. Case Presentation: We report on a 45-year-old Caucasian woman with cervical cancer, FIGO stage IVB. Five months after the end of combined radiochemotherapy and brachytherapy, the patient was readmitted because of severe dysuria...
September 2017: Case Reports in Oncology
https://www.readbyqxmd.com/read/29115514/polygonum-multiflorm-alleviates-glucocorticoid%C3%A2-induced-osteoporosis-and-wnt-signaling-pathway
#12
Manru Zhou, Jingkai Wu, Yongjie Yu, Yajun Yang, Jin Li, Liao Cui, Weimin Yao, Yuyu Liu
It is known that long‑term excessive administration of glucocorticoid (GC) results in osteoporosis. The present study aimed to evaluate the protective effects of Polygonum multiflorm (PM) on the bone tissue of rats with GC‑induced osteoporosis (GIO). A total of 90 6‑month‑old female Sprague Dawley rats (weight range, 190‑210 g) were randomly divided into nine groups: Control (normal saline); prednisone (GC; 6 mg·kg‑1·d‑1; Model); GC plus PMR30 (the 30% ethanol eluent fraction of PM) (H) (400 mg·kg‑1·d‑1); GC plus PMR30 (M) (200 mg·kg‑1·d‑1); GC plus PMR30 (L) (100 mg·kg‑1·d‑1); GC plus PMRF (fat‑soluble fraction of PM) (H) (400 mg·kg‑1·d‑1); GC plus PMRF (M) (200 mg·kg‑1·d‑1); GC plus PMRF (L) (100 mg·kg‑1·d‑1); GC plus calcitriol (CAL; 0...
November 7, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29115171/sika-pilose-antler-type-i-collagen-promotes-bmsc-differentiation-via-the-erk1-2-and-p38-mapk-signal-pathways
#13
Yanshuang Wang, Su Luo, Dafang Zhang, Xiaobo Qu, Yinfeng Tan
CONTEXT: Sika pilose antler type I collagen (SPC-I) have been reported to promote bone marrow mesenchymal stem cell (BMSC) proliferation and differentiation. However, the underlying mechanism is still unclear. OBJECTIVE: This study investigates the molecular mechanisms of SPC-I on the BMSC proliferation and differentiation of osteoblast (OB) in vitro. MATERIAL AND METHODS: The primary rat BMSC was cultured and exposed to SPC-I at different concentrations (2...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/29105393/isolation-characterization-and-osteogenic-potential-of-mouse-digit-tip-blastema-cells-in-comparison-with-bone-marrow-derived-mesenchymal-stem-cells-in-vitro
#14
Leila Taghiyar, Samaneh Hosseini, Mahdi Hesaraki, Forough Azam Sayahpour, Nasser Aghdami, Mohamadreza Baghaban Eslaminejad
OBJECTIVES: Limb regeneration mediated by blastema cells (BlCs) in mammals is limited to the digit tips of neonates. Due to the lack of access to BlCs in adults and the difficulty in isolating and expanding BlCs from neonates, the use of a cellular population with similar features of BlCs would be a valuable strategy to direct a non-regenerative wound towards regeneration. In this study, we have initially isolated and cultured BlCs, and explored their characteristics in vitro. Next, we compared the capability of bone marrow-derived mesenchymal stem cells (BM-MSCs) as an alternative accessible cell source to BlCs for regeneration of appendages...
January 2018: Cell Journal
https://www.readbyqxmd.com/read/29093986/static-magnetic-fields-promote-osteoblastic-cementoblastic-differentiation-in-osteoblasts-cementoblasts-and-periodontal-ligament-cells
#15
Eun-Cheol Kim, Jaesuh Park, Il Keun Kwon, Suk-Won Lee, Su-Jung Park, Su-Jin Ahn
Purpose: Although static magnetic fields (SMFs) have been used in dental prostheses and osseointegrated implants, their biological effects on osteoblastic and cementoblastic differentiation in cells involved in periodontal regeneration remain unknown. This study was undertaken to investigate the effects of SMFs (15 mT) on the osteoblastic and cementoblastic differentiation of human osteoblasts, periodontal ligament cells (PDLCs), and cementoblasts, and to explore the possible mechanisms underlying these effects...
October 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29089368/discovery-of-a-positive-allosteric-modulator-of-the-tsh-receptor-potentiation-of-tsh-mediated-preosteoblast-differentiation-in-vitro
#16
Susanne Neumann, Elena Eliseeva, Alisa Boutin, Elena Barnaeva, Marc Ferrer, Noel Southall, David Kim, Xin Hu, Sarah J Morgan, Juan J Marugan, Marvin C Gershengorn
Recently, we showed that TSH-enhanced differentiation of a human preosteoblast-like cell model involved a β-arrestin 1 (β-Arr 1) mediated pathway. To study this pathway in more detail, we sought to discover a small molecule ligand that was functionally selective toward human TSH receptor (TSHR) activation of β-Arr 1. High-throughput screening using a cell line stably expressing mutated TSHRs and mutated β-Arr 1 (DiscoverX1 cells) led to the discovery of agonists that stimulated translocation of β-Arr 1 to the TSHR, but did not activate Gs-mediated signaling pathways, i...
October 31, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/29088987/effect-of-locally-administered-novel-biodegradable-chitosan-based-risedronate-zinc-hydroxyapatite-intra-pocket-dental-film-on-alveolar-bone-density-in-rat-model-of-periodontitis
#17
Deepak Kumar Khajuria, Saadath Fathima Zahra, Rema Razdan
The aim of this study was to develop a chitosan-based risedronate/zinc-hydroxyapatite intrapocket dental film (CRZHDF) for applications in the treatment of alveolar bone loss in an animal model of periodontitis. The physical characteristics (folding endurance, pH, mucoadhesive strength, risedronate content and release) of CRZHDF, exhibited results within the limit. X-ray diffraction analysis indicates reduced or disappeared crystallinity of risedronate and zinc-hydroxyapatite in presence of chitosan. Further, FTIR studies revealed stability of CRZHDF and compatibility between risedronate, zinc-hydroxyapatite and chitosan...
October 31, 2017: Journal of Biomaterials Science. Polymer Edition
https://www.readbyqxmd.com/read/29068100/upregulated-osterix-expression-elicited-by-runx2-and-dlx5-is-required-for-the-accelerated-osteoblast-differentiation-in-pp2a-c%C3%AE-knockdown-cells
#18
Di Yang, Hirohiko Okamura, Lihong Qiu
Serine/threonine protein phosphatase 2A (PP2A) is involved in regulating various physiological processes including cell cycle, growth, apoptosis, and signal transduction. Osteoblast differentiation is controlled by main bone specific transcription factors including Osterix, distal-less homeobox 5 (Dlx5), and Runt-related transcription factor 2 (Runx2). We previously reported that knockdown of PP2A Cα increases the expression of Osterix, leading to the accelerated osteoblast differentiation through the upregulation of bone-related genes...
October 25, 2017: Cell Biology International
https://www.readbyqxmd.com/read/29044707/the-effect-of-vitamin-d-supplementation-on-bone-metabolic-markers-in-chronic-kidney-disease
#19
Ashok Kumar Yadav, Vivek Kumar, Vinod Kumar, Debasish Banerjee, Krishan Lal Gupta, Vivekanand Jha
Use of active forms of vitamin D is advocated in patients with chronic kidney disease (CKD) for treatment of mineral bone disease because of the presumption that native forms of vitamin D would not undergo significant activation to calcitriol, the most active biological form of vitamin D. We present secondary analysis looking at bone turnover in subjects who completed the randomized, double blind, placebo-controlled trial investigating the effect of cholecalciferol supplementation on vascular function in nondiabetic CKD stage G3-G4 and vitamin D ≤20 ng/mL (Clinical Trials Registry of India: CTRI/2013/05/003648)...
October 17, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29042442/1%C3%AE-25-dihydroxyvitamin-d3-promotes-bone-formation-by-promoting-nuclear-exclusion-of-the-foxo1-transcription-factor-in-diabetic-mice
#20
Yi Xiong, Yixin Zhang, Na Xin, Ying Yuan, Qin Zhang, Ping Gong, Yingying Wu
1α,25-Dihydroxyvitamin D3 (1,25(OH)2D3) is the active form of vitamin D, which is responsible for reducing the risk for diabetes mellitus (DM), decreasing insulin resistance, and improving insulin secretion. Previous studies have shown that 1,25(OH)2D3 inhibited the activity of FoxO1, which has been implicated in the regulation of glucose metabolism. However, its function and mechanism of action in DM-induced energy disorders and also in bone development remains unclear. Here, using in vitro and in vivo approaches including osteoblast-specific, conditional FoxO1-knockout mice, we demonstrate that 1,25(OH)2D3 ameliorates abnormal osteoblast proliferation in DM-induced oxidative stress conditions, and rescues the impaired glucose and bone metabolism through FoxO1 nuclear exclusion resulted from the activation of PI3K/Akt signaling...
October 17, 2017: Journal of Biological Chemistry
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