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https://www.readbyqxmd.com/read/28447734/high-glucose-promotes-the-osteogenic-differentiation-capability-of-human-periodontal-ligament-fibroblasts
#1
Sujiwan Seubbuk, Hathaitip Sritanaudomchai, Julalux Kasetsuwan, Rudee Surarit
Periodontal ligament fibroblasts (PDLFs) are important cells, which are involved in maintaining tooth integrity. Diabetes has been found to be associated with periodontal disease in a bidirectional manner. The aim of the present study was to investigate the stemness properties of human PDLFs (HPDLFs) in high glucose conditions. HPDLFs were analyzed for their osteogenic differentiation capacity by inducing the cells with osteogenic medium in various glucose concentrations. The gene expression was then examined using reverse transcription‑quantitative polymerase chain reaction analysis, and examinations of alkaline phosphatase activity and nodule formation were performed...
March 16, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28445487/bmt-decreases-hfd-induced-weight-gain-associated-with-decreased-preadipocyte-number-and-insulin-secretion
#2
Saeed Katiraei, Lisa R Hoving, Lianne van Beek, Sharida Mohamedhoesein, Françoise Carlotti, Janna A van Diepen, Patrick C N Rensen, Mihai G Netea, Ko Willems van Dijk, Jimmy F P Berbée, Vanessa van Harmelen
Experimental bone marrow transplantation (BMT) in mice is commonly used to assess the role of immune cell-specific genes in various pathophysiological settings. The application of BMT in obesity research is hampered by the significant reduction in high-fat diet (HFD)-induced obesity. We set out to characterize metabolic tissues that may be affected by the BMT procedure and impair the HFD-induced response. Male C57BL/6 mice underwent syngeneic BMT using lethal irradiation. After a recovery period of 8 weeks they were fed a low-fat diet (LFD) or HFD for 16 weeks...
2017: PloS One
https://www.readbyqxmd.com/read/28424263/the-kielin-chordin-like-protein-kcp-attenuates-high-fat-diet-induced-obesity-and-metabolic-syndrome-in-mice
#3
Abdul Soofi, Katherine I Wolf, Margo P Emont, Nathan Qi, Gabriel Martinez-Santibanez, Edward Grimley, Wesam Ostwani, Gregory R Dressler
Obesity and its associated complications, such as insulin resistance and non-alcoholic fatty liver disease, are reaching epidemic proportions. In mice, the TGF-beta superfamily is implicated in the regulation of white and brown adipose tissue differentiation. The Kielin/chordin-like Protein (KCP) is a secreted regulator of the TGF-beta superfamily pathways that can inhibit both TGF-beta and activin signals while enhancing bone morphogenetic protein (BMP) signaling. However, KCP's effects on metabolism and obesity have not been studied in animal models...
April 19, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28419209/estrogen-deficiency-exacerbates-type-1-diabetes-induced-bone-tnf%C3%AE-expression-and-osteoporosis-in-female-mice
#4
Sandi Raehtz, Hayley Bierhalter, Daniel Schoenherr, Narayanan Parameswaran, Laura R McCabe
Estrogen deficiency following menopause is associated with rapid bone loss, osteoporosis and increased fracture risk. Type 1 Diabetes (T1D), characterized by hypoinsulinemia and hyperglycemia, is also associated with bone loss and increased fracture risk. With better treatment options, T1D patients are living longer and therefore the number of patients having both T1D and estrogen deficiency is increasing. Little is known about the mechanistic impact of T1D in conjunction with estrogen deficiency on bone physiology and density...
April 14, 2017: Endocrinology
https://www.readbyqxmd.com/read/28408068/quercus-infectoria-inhibits-set7-nf-%C3%AE%C2%BAb-inflammatory-pathway-in-macrophages-exposed-to-a-diabetic-environment
#5
Julalak Chokpaisarn, Norifumi Urao, Supayang P Voravuthikunchai, Timothy J Koh
Chronic inflammation plays a key role in the pathogenesis of myriad complications associated with diabetes and thus anti-inflammatory therapies may ameliorate these complications. Quercus infectoria (Qi) extract has been shown to downregulate inflammatory processes; however, the molecular mechanisms of this anti-inflammatory activity remain unclear. The hypothesis of our study was that Qi extract exerts its anti-inflammatory effect by downregulating the Set7/NF-κB pathway. Bone marrow-derived macrophages (BMM) were treated with high glucose plus palmitate medium (HG/Pa) to simulate the diabetic environment...
April 10, 2017: Cytokine
https://www.readbyqxmd.com/read/28396584/a-high-glucose-diet-affects-achilles-tendon-healing-in-rats
#6
Stefanie Korntner, Nadja Kunkel, Christine Lehner, Renate Gehwolf, Andrea Wagner, Peter Augat, Daniel Stephan, Verena Heu, Hans-Christian Bauer, Andreas Traweger, Herbert Tempfer
Chronic and acute tendinopathies are difficult to treat and tendon healing is generally a very slow and incomplete process and our general understanding of tendon biology and regeneration lags behind that of muscle or bone. Although still largely unexplored, several studies suggest a positive effect of nutritional interventions on tendon health and repair. With this study, we aim to reveal effects of a high-glucose diet on tendon neoformation in a non-diabetic rat model of Achilles tenotomy. After surgery animals received either a high-glucose diet or a control diet for 2 and 4 weeks, respectively...
April 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28396116/beta-2-adrenergic-receptor-agonists-are-novel-regulators-of-macrophage-activation-in-diabetic-renal-and-cardiovascular-complications
#7
Hyunjin Noh, Mi Ra Yu, Hyun Joo Kim, Ji Hye Lee, Byoung-Won Park, I-Hsien Wu, Motonobu Matsumoto, George L King
Macrophage activation is increased in diabetes and correlated with the onset and progression of vascular complications. To identify drugs that could inhibit macrophage activation, we developed a cell-based assay and screened a 1,040 compound library for anti-inflammatory effects. Beta2-adrenergic receptor (β2AR) agonists were identified as the most potent inhibitors of phorbol myristate acetate-induced tumor necrosis factor-α production in rat bone marrow macrophages. In peripheral blood mononuclear cells isolated from streptozotocin-induced diabetic rats, β2AR agonists inhibited diabetes-induced tumor necrosis factor-α production, which was prevented by co-treatment with a selective β2AR blocker...
April 7, 2017: Kidney International
https://www.readbyqxmd.com/read/28394345/cripto-and-its-signaling-partner-grp78-drive-the-metastatic-phenotype-in-human-osteotropic-prostate-cancer
#8
E Zoni, L Chen, S Karkampouna, Z Granchi, E I Verhoef, F La Manna, J Kelber, R C M Pelger, M D Henry, E Snaar-Jagalska, G J L H van Leenders, L Beimers, P Kloen, P C Gray, G van der Pluijm, M Kruithof-de Julio
CRIPTO (CR-1, TDGF1) is a cell surface/secreted oncoprotein actively involved in development and cancer. Here, we report that high expression of CRIPTO correlates with poor survival in stratified risk groups of prostate cancer (PCa) patients. CRIPTO and its signaling partner glucose-regulated protein 78 (GRP78) are highly expressed in PCa metastases and display higher levels in the metastatic ALDH(high) sub-population of PC-3M-Pro4Luc2 PCa cells compared with non-metastatic ALDH(low). Coculture of the osteotropic PC-3M-Pro4Luc2 PCa cells with differentiated primary human osteoblasts induced CRIPTO and GRP78 expression in cancer cells and increases the size of the ALDH(high) sub-population...
April 10, 2017: Oncogene
https://www.readbyqxmd.com/read/28388723/high-sclerostin-and-dickkopf-1-dkk-1-serum-levels-in-children-and-adolescents-with-type-1-diabetes-mellitus
#9
Maria Felicia Faienza, Annamaria Ventura, Maurizio Delvecchio, Anna Fusillo, Laura Piacente, Gabriella Aceto, Graziana Colaianni, Silvia Colucci, Luciano Cavallo, Maria Grano, Giacomina Brunetti
Context: Childhood type 1 diabetes mellitus (T1DM) is associated with decreased bone mass. Sclerostin and dickkopf-1 (DKK-1) are Wnt inhibitors that regulate bone formation. Objective: To evaluate sclerostin and DKK-1 levels in T1DM children and to analyze the influence of glycemic control on bone health. Design and setting: Cross-sectional study conducted at a clinical research center. Participants: One hundred and six T1DM subjects (12...
April 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28365712/determinants-of-advanced-bone-age-in-childhood-obesity%C3%A2
#10
Cornelis J de Groot, Adriaan van den Berg, Bart E P B Ballieux, Herman M Kroon, Edmond H H M Rings, Jan M Wit, Erica L T van den Akker
BACKGROUND: Childhood obesity is associated with advanced bone age (BA). Previous studies suggest that androgens, oestrogens, sex hormone-binding globulin, and insulin are responsible for this phenomenon, but results are contradictory and might be biased by confounders. We aim to elucidate this matter by applying a multivariate approach. METHOD: We performed a correlation analysis of BA standard deviation score (SDS) with age- and sex-specific SDS for androgens, oestrogens, and with indicators of insulin secretion derived from oral glucose tolerance testing, in a group of obese children...
March 31, 2017: Hormone Research in Pædiatrics
https://www.readbyqxmd.com/read/28362046/co-microencapsulation-of-bmscs-and-mouse-pancreatic-%C3%AE-cells-for-improving-the-efficacy-of-type-i-diabetes-therapy
#11
Ruimin Long, Yuangang Liu, Shibin Wang, Li Ye, Peng He
INTRODUCTION: To overcome the shortcomings of pancreas transplantation and insulin injection treatment for type I diabetes, biocompatible materials were used to prepare alginate-chitosan-alginate microcapsules that co-encapsulated bone marrow mesenchymal stem cells and mouse pancreatic β cells to treat diabetic mice. METHODS: Blank alginate-chitosan-alginate (ACA) microcapsules and co-microencapsulated cells were prepared using a high-voltage electrostatic method and then characterized using an inverted microscope...
March 21, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28321876/effects-of-glucose-concentration-on-osteogenic-differentiation-of-type-ii-diabetes-mellitus-rat-bone-marrow-derived-mesenchymal-stromal-cells-on-a-nano-scale-modified-titanium
#12
I Yamawaki, Y Taguchi, S Komasa, A Tanaka, M Umeda
BACKGROUND AND OBJECTIVE: Diabetes mellitus (DM) is a common disease worldwide. Patients with DM have an increased risk of losing their teeth compared with other individuals. Dental implants are a standard of care for treating partial or full edentulism, and various implant surface treatments have recently been developed to increase dental implant stability. However, some studies have reported that DM reduces osseointegration and the success rate of dental implants. The purpose of this study was to determine the effects of high glucose levels for hard tissue formation on a nano-scale modified titanium surface...
March 21, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28319076/clinical-impact-of-hyperglycemia-on-days-0-7-after-allogeneic-stem-cell-transplantation
#13
A Kawajiri, S Fuji, Y Tanaka, C Kono, T Hirakawa, T Tanaka, R Ito, Y Inoue, K Okinaka, S Kurosawa, Y Inamoto, S-W Kim, T Yamashita, T Fukuda
In order to clarify the association between hyperglycemia during the early period after allogeneic stem cell transplantation (allo-SCT) and adverse outcomes, we retrospectively analyzed 563 consecutive patients who underwent allo-SCT at our institute between 2008 and 2015. Patients were categorized into three groups according to mean fasting blood glucose levels on days 0-7 (normoglycemia group<110 mg/dL, n=347; mild hyperglycemia group 110-149 mg/dL, n=192 and moderate/severe hyperglycemia group≥150 mg/dL, n=24)...
March 20, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28303402/association-between-metabolic-syndrome-and-bone-mineral-density-in-a-taiwanese-elderly-population
#14
Song-Seng Loke, Hsueh-Wen Chang, Wen-Cheng Li
Previous studies have demonstrated uncertainty regarding the effect of metabolic syndrome (MetS) on bone. In the present work, we investigated the association between MetS, its components, and decreased bone mineral density (BMD) in a cross-sectional study of patients who underwent BMD measurement by dual-energy X-ray absorptiometry during a health examination. Decreased BMD was defined as either osteopenia or osteoporosis. MetS components and body mass index (BMI) were compared between individuals with normal and decreased BMD, and simple and multivariate logistic regression analyses were used to evaluate the association between the variables and decreased BMD in women and men...
March 16, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/28301384/the-effects-of-hierarchical-micro-nano-structured-titanium-surface-on-osteoblast-proliferation-and-differentiation-under-diabetic-conditions
#15
Huanhuan Jiang, Xiang Ma, Wenjuan Zhou, Kai Dong, Xiaohui Rausch-Fan, Shutai Liu, Shu Li
PURPOSE: The aim of the present study was to mimic the hierarchical structure of bone tissues by simple sandblasting/acid-etching and anodization to investigate the effects of such surface characteristics on proliferation and differentiation of osteoblasts in high glucose concentrations. By the way, the effects of high glucose levels on osteoblast functions were tested. METHODS: MC3T3-E1 cells cultured on sand-blasted and acid-etched (SLA) surface and nano-modified SLA (NMSLA) surface were subjected to normal serum (NS) and diabetic serum (DS), respectively...
April 2017: Implant Dentistry
https://www.readbyqxmd.com/read/28300329/insulin-resistance-and-the-igf-i-cortical-bone-relationship-in-children-ages-9-13-years
#16
Joseph M Kindler, Norman K Pollock, Emma M Laing, Assaf Oshri, Nathan T Jenkins, Carlos M Isales, Mark W Hamrick, Ke-Hong Ding, Dorothy B Hausman, George P McCabe, Berdine R Martin, Kathleen M Hill Gallant, Stuart J Warden, Connie M Weaver, Munro Peacock, Richard D Lewis
IGF-I is a pivotal hormone in pediatric musculoskeletal development. Though recent data suggest that the role of IGF-I in total body lean mass and total body bone mass accrual may be compromised in children with insulin resistance, cortical bone geometric outcomes have not been studied in this context. Therefore, we explored the influence of insulin resistance on the relationship between IGF-I and cortical bone in children. A secondary aim was to examine the influence of insulin resistance on the lean mass-dependent relationship between IGF-I and cortical bone...
March 16, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28294540/traditional-chinese-medicine-bushen-jianpi-huoxue-decoction-prevents-diabetic-osteoporosis-in-rats-via-wnt-and-nuclear-factor-kappa-b-signaling-pathways
#17
Yongqing Zhang, Mingming Liu, Haisheng Li, Zetao Chen, Na Liang, Jianguo Xu, Xiaoli Zhang, Yihang Zhang
AIM: The aim of this study was to evaluate the therapeutic effect of a traditional Chinese medicine (TCM), Bushen-Jianpi-Huoxue decoction (BJHD), on diabetic osteoporosis (DOP) and the action mechanisms likely mediated by nuclear factor-kappa B (NF-κB) and Wnt signaling pathways. METHODS: Fifty-five male Wistar rats were used in this study; they were divided into normal control (n = 10) and established DOP model (n = 45) groups. The DOP model was induced using a combination high carbohydrate - high fat diet and intraperitoneal injections of streptozotocin (STZ)...
March 13, 2017: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/28291022/effects-of-descending-stair-walking-on-health-and-fitness-of-elderly-obese-women
#18
Trevor C Chen, Chung-Chan Hsieh, Kuo-Wei Tseng, Chih-Chiao Ho, Kazunori Nosaka
PURPOSE: Eccentric exercise training produces positive fitness and health outcomes, but whether this is also the case for descending stair walking (DSW) is unknown. This study investigated the hypothesis that DSW would improve insulin sensitivity, lipid profiles and physical fitness better than ascending stair walking (ASW). METHODS: Elderly (≥60 y) obese women were placed to either DSW or ASW group (n=15/group). An elevator was used to eliminate ascending stairs for DSW, and descending stairs for ASW...
March 13, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28285015/tnf%C3%AE-contributes-to-diabetes-impaired-angiogenesis-in-fracture-healing
#19
Jason C Lim, Kang I Ko, Marcelo Mattos, Miao Fang, Citong Zhang, Daniel Feinberg, Hisham Sindi, Shuai Li, Jazia Alblowi, Rayyan A Kayal, Thomas A Einhorn, Louis C Gerstenfeld, Dana T Graves
Diabetes increases the likelihood of fracture, interferes with fracture healing and impairs angiogenesis. The latter may be significant due to the critical nature of angiogenesis in fracture healing. Although it is known that diabetes interferes with angiogenesis the mechanisms remain poorly defined. We examined fracture healing in normoglycemic and streptozotocin-induced diabetic mice and quantified the degree of angiogenesis with antibodies to three different vascular markers, CD34, CD31 and Factor VIII. The role of diabetes-enhanced inflammation was investigated by treatment of the TNFα-specific inhibitor, pegsunercept starting 10days after induction of fractures...
March 8, 2017: Bone
https://www.readbyqxmd.com/read/28283687/impact-of-gain-of-function-mutations-in-the-low-density-lipoprotein-receptor-related-protein-5-lrp5-on-glucose-and-lipid-homeostasis
#20
D Foer, M Zhu, R L Cardone, C Simpson, R Sullivan, S Nemiroff, G Lee, R G Kibbey, K F Petersen, K L Insogna
LRP5 loss-of-function mutations have been shown to cause profound osteoporosis and have been associated with impaired insulin sensitivity and dysregulated lipid metabolism. We hypothesized that gain-of-function mutations in LRP5 would also affect these parameters. We therefore studied individuals with LRP5 gain-of-function mutations exhibiting high bone mass (HBM) phenotypes and found that while there was no detected change in insulin sensitivity, there was a significant reduction in serum LDL. INTRODUCTION: Wnt signaling through LRP5 represents a newly appreciated metabolic pathway, which potentially represents a target for drug discovery in type 2 diabetes and hyperlipidemia...
March 10, 2017: Osteoporosis International
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