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https://www.readbyqxmd.com/read/27933572/relation-between-the-stability-of-dental-implants-and-two-biological-markers-during-the-healing-period-a-prospective-clinical-study
#1
Choknapa Tirachaimongkol, Peraphan Pothacharoen, Peter A Reichart, Pathawee Khongkhunthian
OBJECTIVES: The purposes of this study were to examine the correlation between the stability of dental implants and bone formation markers during the healing period and to monitor the stability of dental implants using the resonance frequency analysis (RFA) method. The null hypothesis of the study is no correlation between the stability of dental implant and bone formation markers. METHODS: The study is a prospective clinical study during the 3-month healing period of implant...
December 2016: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/27932879/study-of-a-new-bone-targeting-titanium-implant-bone-interface
#2
Xiangning Liu, Ye Zhang, Shaobing Li, Yayu Wang, Ting Sun, Zejian Li, Lizhao Cai, Xiaogang Wang, Lei Zhou, Renfa Lai
New strategies involving bone-targeting titanium (Ti) implant-bone interface are required to enhance bone regeneration and osseointegration for orthopedic and dental implants, especially in osteoporotic subjects. In this study, a new dual-controlled, local, bone-targeting delivery system was successfully constructed by loading tetracycline-grafted simvastatin (SV)-loaded polymeric micelles in titania nanotube (TNT) arrays, and a bone-targeting Ti implant-bone interface was also successfully constructed by implanting the delivery system in vivo...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27930933/calcitonin-induces-collagen-synthesis-and-osteoblastic-differentiation-in-human-periodontal-ligament-fibroblasts
#3
Yibo Wei, Qing Ye, Zhen Tang, Gang Tian, Qiang Zhu, Haocheng Gao, Dalin Wang, Zhizhong Cao
BACKGROUND: Extracellular matrix (ECM) secretion and osteogenic differentiation in periodontal ligament fibroblasts (PDLF) facilitate the neogenesis of alveolar bone, which is the cellular basis for alveolar bone repair. Calcitonin (CT) has been reported to play an important role in promoting ECM expression and inducing osteogenic differentiation in osteoblast, but its effects on PDLFs remain obscure. METHODS: The expression of CT, transforming growth factor-beta 1(TGF-β1) and bone morphogenetic protein (BMP) in gingival crevicular fluid (GCF) was measured by ELISA...
November 28, 2016: Archives of Oral Biology
https://www.readbyqxmd.com/read/27923594/synthesis-of-the-cyp24a1-major-metabolite-of-2%C3%AE-2-tetrazol-2-yl-ethyl-1%C3%AE-25-dihydroxyvitamin-d3
#4
REVIEW
Masashi Takano, Kaori Yasuda, Eri Tohyama, Erika Higuchi, Toshiyuki Sakaki, Atsushi Kittaka
Previously, we found that 2α-[2-(tetrazol-2-yl)ethyl]-1α,25-dihydroxyvitamin D3 (AH-1) showed higher osteocalcin promoter transactivation activity in human osteosarcoma (HOS) cells and a greater therapeutic effect on ovariectomized (OVX) rats for enhancing bone mineral density than those of 1α,25(OH)2D3 without hypercalcemic side effects in vivo. Although CYP24A1 catalyzes multi-step oxidations toward the CD-ring side chain of the active vitamin D3 [1α,25(OH)2D3], the CYP24A1-dependent metabolism of AH-1 tended to stop at the first step hydroxylation at the C24-position of AH-1...
December 3, 2016: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/27917446/adenotonsillectomy-outcomes-regarding-bone-age-and-osteocalcin-in-treatment-of-obstructive-sleep-apnea-syndrome-in-children
#5
Qing-Biao Zhang, Yin-Feng Li, Ming-Xiu Li, Ling-Yu Kong, Liang-Fu Jiang, Hui-Wei Feng, Xian-Liang Fan
BACKGROUND: To investigate the effect of adenotonsillectomy (AT) on bone development, quality of life and polysomnography evaluation in children with obstructive sleep apnea syndrome (OSA). METHODS: Preoperative and postoperative (6 months) physical examination, PSG, bone age (BA) and osteocalcin (OC) evaluation were performed on the selected OSA children (n=92) and the healthy children (n=87). The OSA children were also scored based on the OSA 18-item questionnaire...
December 5, 2016: World Journal of Pediatrics: WJP
https://www.readbyqxmd.com/read/27916889/hyaluronic-acid-gel-based-scaffolds-as-potential-carrier-for-growth-factors-an-in-vitro-bioassay-on-its-osteogenic-potential
#6
Masako Fujioka-Kobayashi, Benoit Schaller, Eizaburo Kobayashi, Maria Hernandez, Yufeng Zhang, Richard J Miron
Hyaluronic acid (HA) has been utilized for a variety of regenerative medical procedures due to its widespread presence in connective tissue and perceived biocompatibility. The aim of the present study was to investigate HA in combination with recombinant human bone morphogenetic protein 9 (rhBMP9), one of the most osteogenic growth factors of the BMP family. HA was first combined with rhBMP9 and assessed for the adsorption and release of rhBMP9 over 10 days by ELISA. Thereafter, ST2 pre-osteoblasts were investigated by comparing (1) control tissue culture plastic, (2) HA alone, and (3) HA with rhBMP9 (100 ng/mL)...
November 30, 2016: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/27909781/the-ability-of-low-magnitude-mechanical-signals-to-normalize-bone-turnover-in-adolescents-hospitalized-for-anorexia-nervosa
#7
A D DiVasta, H A Feldman, C T Rubin, J S Gallagher, N Stokes, D P Kiel, B D Snyder, C M Gordon
: We sought to determine whether low-magnitude mechanical stimulation (LMMS) normalizes bone turnover among adolescents hospitalized for anorexia nervosa (AN). Brief, daily LMMS prevents the decline in bone turnover typically seen during bed rest in AN. LMMS may have application for patients with AN in the inpatient setting to protect bone health. INTRODUCTION: Malnourished adolescents with AN requiring medical hospitalization are at high risk for rapid reduction in skeletal quality...
December 1, 2016: Osteoporosis International
https://www.readbyqxmd.com/read/27909721/protective-effect-of-vk2-on-glucocorticoid-treated-mc3t3-e1-cells
#8
Yue-Lei Zhang, Jun-Hui Yin, Hao Ding, Wei Zhang, Chang-Qing Zhang, You-Shui Gao
Glucocorticoids (GCs) contribute to the increased incidence of secondary osteoporosis and osteonecrosis, and medications for the prevention and treatment of these complications have been investigated for many years. Vitamin K2 (VK2) has been proven to promote bone formation both in vitro and in vivo. In this study, we examined the effects of VK2 on dexamethasone (DEX)-treated MC3T3-E1 osteoblastic cells. We observed that VK2 promoted the proliferation and enhanced the survival of dexamethasone-treated MC3T3-E1 cells...
December 1, 2016: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/27908407/effects-of-fluoride-on-insulin-signaling-and-bone-metabolism-in-ovariectomized-rats
#9
Amanda Gomes Pereira, Fernando Yamamoto Chiba, Maria Sara de Lima Coutinho Mattera, Renato Felipe Pereira, Rita de Cássia Alves Nunes, Thaís Verônica Saori Tsosura, Roberta Okamoto, Doris Hissako Sumida
Fluoride is an essential trace element for the maintenance of bone health owing to its capacity to stimulate proliferation and osteoblastic activity that can lead to increased bone formation. However, excessive sodium fluoride (NaF) intake can impair carbohydrate metabolism thereby promoting hyperglycemia, insulin resistance, and changes in insulin signaling. Thus, this study aimed to evaluate the effect of chronic treatment with NaF in bone metabolism, insulin signaling, and plasma concentrations of glucose, insulin, tumor necrosis factor-α (TNF-α), osteocalcin (OCN), and fluoride in ovariectomized rats...
January 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/27904711/naringin-promotes-osteogenic-differentiation-of-bone-marrow-stromal-cells-by-up-regulating-foxc2-expression-via-the-ihh-signaling-pathway
#10
Fei-Xiang Lin, Shi-Xin Du, De-Zhong Liu, Qin-Xiao Hu, Guo-Yong Yu, Chu-Cheng Wu, Gui-Zhou Zheng, Da Xie, Xue-Dong Li, Bo Chang
Naringin is an active compound extracted from Rhizoma Drynariae, and studies have revealed that naringin can promote proliferation and osteogenic differentiation of bone marrow stromal cells (BMSCs). In this study, we explored whether naringin could promote osteogenic differentiation of BMSCs by upregulating Foxc2 expression via the Indian hedgehog (IHH) signaling pathway. BMSCs were cultured in basal medium, basal medium with naringin, osteogenic induction medium, osteogenic induction medium with naringin and osteogenic induction medium with naringin in the presence of the IHH inhibitor cyclopamine (CPE)...
2016: American Journal of Translational Research
https://www.readbyqxmd.com/read/27904672/t3-inhibits-the-calcification-of-vascular-smooth-muscle-cells-and-the-potential-mechanism
#11
Xiaodan Chang, Baohong Zhang, Li Lihua, Zhichun Feng
OBJECTIVE: This study aimed to investigate the potential molecular mechanism underlying the T3 induced vascular calcification and phenotype transformation of vascular smooth muscle cells (VSMCs). METHODS: Rat thoracic aortic smooth muscle cells (A7r5) were cultured in vitro and randomly assigned into normal control group, calcification group, T3 group and inhibitor group. RESULTS: When compared with normal control group, the osteocalcin content, ALP activity, Osterix and Runx2 mRNA expression and OPN protein expression increased significantly (P<0...
2016: American Journal of Translational Research
https://www.readbyqxmd.com/read/27901049/glucocorticoid-receptor-and-histone-deacetylase-6-mediate-the-differential-effect-of-dexamethasone-during-osteogenesis-of-mesenchymal-stromal-cells-mscs
#12
Marilyn G Rimando, Hao-Hsiang Wu, Yu-An Liu, Chien-Wei Lee, Shu-Wen Kuo, Yin-Ping Lo, Kuo-Fung Tseng, Yi-Shiuan Liu, Oscar Kuang-Sheng Lee
Lineage commitment and differentiation of mesenchymal stromal cells (MSCs) into osteoblasts in vitro is enhanced by a potent synthetic form of glucocorticoid (GC), dexamethasone (Dex). Paradoxically, when used chronically in patients, GCs exert negative effects on bone, a phenomenon known as glucocorticoid-induced osteoporosis in clinical practice. The mechanism on how GC differentially affects bone precursor cells to become mature osteoblasts during osteogenesis remains elusive. In this study, the dose and temporal regulation of Dex on MSC differentiation into osteoblasts were investigated...
November 30, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27900427/the-impact-of-excess-body-fat-on-bone-remodeling-in-adolescents
#13
L N Mosca, T B L Goldberg, V N da Silva, C S Kurokawa, A C B Rizzo, C C da Silva, A Dos Santos Teixeira, J E Corrente
: The impact of excess body fat on bone remodeling was evaluated in overweight, obese, and extremely obese adolescents. In adolescents with excess weight, it was observed that the higher the bone mineral content and bone mineral density values, the lower the levels of the biomarkers. Nutritional imbalances by excess had a negative effect on bone formation in this stage of life. INTRODUCTION: The aim of this study was to investigate the impact of excess body fat on bone remodeling in adolescents...
November 30, 2016: Osteoporosis International
https://www.readbyqxmd.com/read/27898869/effects-of-dietary-calcium-and-phosphorus-on-reproductive-performance-and-markers-of-bone-turnover-in-stall-or-group-housed-sows
#14
F P Y Tan, S A Kontulainen, A D Beaulieu
Increasing productivity and new housing standards necessitate a reevaluation of nutrient requirements for sows, including minerals. The objective of this study was to determine if the recommended levels of dietary Ca and P are adequate for sows housed in groups and that, therefore, have the potential for increased mobility. A total of 180 multiparous sows and gilts were assigned to 1 of 6 treatments. Treatments, arranged as a 3 × 2 factorial, included the main effects of dietary Ca:P-0.70:0.55% Ca:P (as-fed basis; control), 0...
October 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27896877/flavonoids-of-herba-epimedii-enhances-bone-repair-in-a-rabbit-model-of-chronic-osteomyelitis-during-post-infection-treatment-and-stimulates-osteoblast-proliferation-in-vitro
#15
Dan Shou, Yang Zhang, Lifeng Shen, Rongzong Zheng, Xiaowen Huang, Zhujun Mao, Zhongming Yu, Nani Wang, Yan Zhu
Flavonoids are the active component of the Herba Epimedii (H. Epimedii), which is commonly used in Asia. This study is to investigate the effect of H. Epimedii on bone repair after anti-infection treatment in vivo. The bioactive-composition group of H. Epimedii (BCGE) contained four flavonoids with the total content of 43.34%. Rabbits with chronic osteomyelitis in response to injection with Staphylococcus aureus were treated with BCGE of 242.70 mg/kg/day intragastrically after vancomycin-calcium sulphate treatment...
November 29, 2016: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/27894216/bone-effects-of-canagliflozin-a-sodium-glucose-co-transporter-2-inhibitor-in-patients-with-type-2-diabetes-mellitus
#16
Thomas C Blevins, Azeez Farooki
Canagliflozin, a sodium glucose co-transporter 2 (SGLT2) inhibitor approved for the treatment of type 2 diabetes mellitus (T2DM), lowers blood glucose by inhibiting renal glucose reabsorption and increasing urinary glucose excretion. It has been reported that SGLT2 inhibitors may have potential adverse effects on bone, including increased fracture risk and decreased bone mineral density (BMD). Across clinical studies, canagliflozin was not associated with meaningful changes in serum or urine calcium, vitamin D, or parathyroid hormone...
November 28, 2016: Postgraduate Medicine
https://www.readbyqxmd.com/read/27893751/25-hydroxy-and-1%C3%AE-25-dihydroxycholecalciferol-have-greater-potencies-than-25-hydroxy-and-1%C3%AE-25-dihydroxyergocalciferol-in-modulating-cultured-human-and-mouse-osteoblast-activities
#17
Allahdad Zarei, Philippa A Hulley, Afsie Sabokbar, M Kassim Javaid, Alireza Morovat
Despite differences in the phamacokinetics of 25-hydroxycholecalciferol (25(OH)D3) and 25-hydroxyergocalciferol (25(OH)D2) in man, the effects of these and their 1α-hydroxylated forms (1,25(OH)2D3 and 1,25(OH)2D2) on cellular activity of vitamin D-responsive cells have hardly been compared. We studied differences in the effects of these metabolites on cell number, gene transcription, protein expression and mineralisation of cultured human bone marrow-derived stromal cells (hBMSC) and rapidly mineralising mouse 2T3 osteoblasts...
2016: PloS One
https://www.readbyqxmd.com/read/27891497/mechanisms-involved-in-altered-bone-metabolism-in-diabetes-a-narrative-review
#18
REVIEW
Maryam Ghodsi, Bagher Larijani, Abbass Ali Keshtkar, Ensieh Nasli-Esfahani, Sudabeh Alatab, Mohammad Reza Mohajeri-Tehrani
Many studies have shown that change in metabolism caused by diabetes can influence the bone metabolism in a way that quality and strength of bone is decreased. A 6 times and 2 times increased risk of fracture is reported in patients with type 1 and type 2 diabetes, respectively. There are several mechanisms by which diabetes can affect the bone. The fact that some of these mechanisms are acting in opposite ways opens the door for debate on pathways by which diabetes affects the bones. On the other hand, bone is not a simple organ that only get influence from other organs, but it is an endocrine organ that by secreting the agents such as osteocalcin, adiponectin and visfatin which can affect the insulin sensitivity and metabolism...
2016: Journal of Diabetes and Metabolic Disorders
https://www.readbyqxmd.com/read/27889949/undercarboxylated-osteocalcin-can-predict-insulin-secretion-ability-in-type-2-diabetes
#19
Yuichi Takashi, Minae Koga, Yoko Matsuzawa, Jun Saito, Masao Omura, Tetsuo Nishikawa
There has been reported to be intimate relationship between diabetes and bone metabolism including undercarboxylated osteocalcin (ucOC). On the other hand, data on the relationship between ucOC and glucose metabolism are limited in type 2 diabetes. We recruited 50 Japanese patients with type 2 diabetes and examined the association with ucOC on the insulin secretion, evaluated by both glucagon loading test (GLT) and meal tolerance test, and the prognosis of diabetes. UcOC was shown to correlate positively with ⊿C-peptide response (CPR) in GLT and CPR after meal taking (p=0...
November 27, 2016: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/27888491/twist-removal-of-healed-vs-nonhealed-implants-a-mechanical-and-histological-study-in-mini-pigs
#20
Ricardo de Oliveira Silva, Fabrício Passador, Paulo Henrique Ferreira Caria
PURPOSE: The objective of this study was to evaluate the effect of removal torque (reverse torque) of titanium implants in peri-implant bone. METHODS: The P1-M1 teeth were extracted bilaterally of 6 mini pigs (BR-1). Each animal received 6 titanium implants, three for each side of mandible. On the right side of mandible, 3 implants reminded 9 months (9M) under masticatory activity and on the left side, other 3 implants were placed and immediately removed (IR). All 36 implants were removed by removal torque, and the recorded values were statistically analyzed...
December 2016: International Journal of Implant Dentistry
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