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bone and diabetes

Mursel Bicer, Saltuk Bugra Baltaci, Suleyman Patlar, Rasim Mogulkoc, Abdulkerim Kasim Baltaci
Aim The present study aimed to examine the effects of melatonin supplementation on lipid peroxidation in the bone tissue of diabetic rats subjected to acute swimming exercise. Methods The study was conducted on 80 Sprague-Dawley type adult male rats which were equally allocated to eight groups: group 1, general control; group 2, melatonin-supplemented control; group 3, melatonin-supplemented diabetic control; group 4, swimming control; group 5, melatonin-supplemented swimming; group 6, melatonin-supplemented diabetic swimming; group 7, diabetic swimming; group 8, diabetic control...
March 16, 2018: Hormone Molecular Biology and Clinical Investigation
Michaël R Laurent
An overview of selected papers related to bone published in 2017 is provided. PURPOSE: This paper accompanies a lecture at the 2018 Belgian Bone Club annual Clinical Update Symposium held in Brussels on January 20th, discussing the best papers (in the opinion of the author) published in the previous year. METHODS: A PubMed search using the keyword "bone" and articles published in 2017. RESULTS: Hot topics include screening for osteoporosis, novel anabolic drugs such as romosozumab and abaloparatide for osteoporosis and rare metabolic bone diseases, as well as long-term efficacy of denosumab and possible risk of multiple vertebral fractures following its discontinuation...
March 15, 2018: Archives of Osteoporosis
Pablo Antonio Ureña-Torres, Mario Cozzolino, Jordi Bover
Secondary hyperparathyroidism (SHPT) is one of the most frequent and deleterious complication of chronic kidney disease (CKD). SHPT is also one of the principal components of the now called CKD-mineral and bone disorders (MBD) syndrome. It is usually prevented and treated by vitamin D derivatives. However, the rationale for the prescription of vitamin D sterols in those patients is still a matter of hotly debates, mainly because of unsatisfactory results from numerous observational and not well-controlled studies...
March 12, 2018: Néphrologie & Thérapeutique
Ji-Hye Kim, Ae Ri Kim, Yun Hui Choi, Aeryun Kim, Yongsung Sohn, Gye-Hyeong Woo, Jeong-Heon Cha, Eun-Jung Bak, Yun-Jung Yoo
BACKGROUND: Periodontitis is an infectious disease that manifests as alveolar bone loss surrounding the roots of teeth. Diabetes aggravates periodontitis-induced alveolar bone loss via suppression of bone formation. Intermittent parathyroid hormone (PTH) administration displays an anabolic effect on bone. In this study, we investigated the effect of intermittent PTH administration on alveolar bone loss in type 1 diabetic rats with periodontitis. METHODS: Rats were divided into control (C), periodontitis (P), periodontitis treated with PTH (P + PTH), diabetes with periodontitis (DP), and diabetes with periodontitis treated with PTH (DP + PTH) groups...
March 15, 2018: Journal of Translational Medicine
Eiki Yoshida, Takafumi Suzuki, Masanobu Morita, Keiko Taguchi, Kohei Tsuchida, Hozumi Motohashi, Minoru Doita, Masayuki Yamamoto
Keap1 is a negative regulator of Nrf2, a master transcription factor that regulates cytoprotection against oxidative and electrophilic stresses. Although several studies have suggested that the Keap1-Nrf2 system contributes to bone formation besides the maintenance of redox homeostasis, how Nrf2 hyperactivation by Keap1 deficiency affects the bone formation remains to be explored, as the Keap1-null mice are juvenile lethal. To overcome this problem, we used viable Keap1-deficient mice that we have generated by deleting the esophageal Nrf2 in Keap1-null mice (NEKO mice)...
March 15, 2018: Genes to Cells: Devoted to Molecular & Cellular Mechanisms
Yuji Komorita, Masanori Iwase, Hiroki Fujii, Toshiaki Ohkuma, Hitoshi Ide, Tamaki Jodai-Kitamura, Akiko Sumi, Masahito Yoshinari, Udai Nakamura, Dongchon Kang, Takanari Kitazono
OBJECTIVE: There is growing evidence that weight loss is associated with increased fracture risk in the general population. As patients with diabetes often lose weight intentionally or unintentionally, we aimed to investigate prospectively the relationship between weight loss from maximum body weight and fracture risk. RESEARCH DESIGN AND METHODS: A total of 4,706 Japanese participants with type 2 diabetes (mean age 66 years), including 2,755 men and 1,951 postmenopausal women, were followed for a median of 5...
March 14, 2018: Diabetes Care
Ronaldo Lira-Junior, Sigvard Åkerman, Björn Klinge, Elisabeth A Boström, Anders Gustafsson
BACKGROUND: Analysis of saliva is emerging as a promising tool to diagnose and monitor diseases which makes determination of the salivary microbial profile in different scenarios essential. OBJECTIVE: To evaluate the effects of age, periodontal disease, sex, smoking, and medical conditions on the salivary microbial profile. DESIGN: A randomly selected sample of 441 individuals was enrolled (51% women; mean age 48.5±16.8). Participants answered a health questionnaire and underwent an oral examination...
2018: PloS One
Takeshi Shimoide, Naoyuki Kawao, Yukinori Tamura, Kiyotaka Okada, Yoshitaka Horiuchi, Katsumi Okumoto, Shinji Kurashimo, Masayoshi Ishida, Kohei Tatsumi, Osamu Matsuo, Hiroshi Kaji
Delayed fracture healing is a significant clinical problem among various complications in diabetic patients. However, the details in the mechanisms of diabetic delayed bone repair have still remained unknown. Here, we investigated the roles of macrophages in diabetic delayed bone repair after femoral bone injury using streptozotocin (STZ)-treated or plasminogen activator inhibitor-1 (PAI-1)-deficient female mice. STZ treatment significantly decreased the numbers of F4/80-positive cells (macrophages), but not Gr-1-positive cells (neutrophils), at the damaged site on day 2 after femoral bone injury in mice...
March 8, 2018: Endocrinology
Zeev Ormianer, Jonathan Block, Shlomo Matalon, Jerry Kohen
PURPOSE: The objective of this study was to assess whether long-term implant survival rates and bone loss in patients with moderately controlled type 2 diabetes is similar to the rates reported in the nondiabetic population. MATERIALS AND METHODS: This retrospective observational study utilized patient medical records from a general practitioner's dental office. The records of patients who had moderately controlled type 2 diabetes with hemoglobin A1C (HbA1c) up to 8% and glucose level below 150 mg/dL were reviewed, as patients with HbA1c up to 7% are considered to be well-controlled type 2 diabetes...
March 2018: International Journal of Oral & Maxillofacial Implants
Kelsey H Collins, Walter Herzog, Graham Z MacDonald, Raylene A Reimer, Jaqueline L Rios, Ian C Smith, Ronald F Zernicke, David A Hart
Inflammation can arise in response to a variety of stimuli, including infectious agents, tissue injury, autoimmune diseases, and obesity. Some of these responses are acute and resolve, while others become chronic and exert a sustained impact on the host, systemically, or locally. Obesity is now recognized as a chronic low-grade, systemic inflammatory state that predisposes to other chronic conditions including metabolic syndrome (MetS). Although obesity has received considerable attention regarding its pathophysiological link to chronic cardiovascular conditions and type 2 diabetes, the musculoskeletal (MSK) complications (i...
2018: Frontiers in Physiology
Khadega A Abuelgasim, Hinna Rehan, Maha Alsubaie, Nasser Al Atwi, Mohammed Al Balwi, Saeed Alshieban, Areej Almughairi
BACKGROUND: Chronic lymphocytic leukemia and chronic myeloid leukemia are the most common types of adult leukemia. However, it is rare for the same patient to suffer from both. Richter's transformation to diffuse large B-cell lymphoma is frequently observed in chronic lymphocytic leukemia. Purine analog therapy and the presence of trisomy 12, and CCND1 gene rearrangement have been linked to increased risk of Richter's transformation. The coexistence of chronic myeloid leukemia and diffuse large B-cell lymphoma in the same patient is extremely rare, with only nine reported cases...
March 11, 2018: Journal of Medical Case Reports
J Cai, W Li, T Sun, X Li, E Luo, D Jing
The effects of exogenous pulsed electromagnetic field (PEMF) stimulation on T1DM-associated osteopathy were investigated in alloxan-treated rabbits. We found that PEMF improved bone architecture, mechanical properties, and porous titanium (pTi) osseointegration by promoting bone anabolism through a canonical Wnt/β-catenin signaling-associated mechanism, and revealed the clinical potential of PEMF stimulation for the treatment of T1DM-associated bone complications. INTRODUCTION: Type 1 diabetes mellitus (T1DM) is associated with deteriorated bone architecture and impaired osseous healing potential; nonetheless, effective methods for resisting T1DM-associated osteopenia/osteoporosis and promoting bone defect/fracture healing are still lacking...
March 9, 2018: Osteoporosis International
Ariadne Androulidaki, Laurens Wachsmuth, Apostolos Polykratis, Manolis Pasparakis
Type 1 diabetes (T1D) is caused by the autoimmune destruction of the insulin-producing pancreatic beta cells. While the role of adaptive immunity has been extensively studied, the role of innate immune responses and particularly of Toll- like Receptor (TLR) signaling in T1D remains poorly understood. Here we show that myeloid cell-specific MyD88 deficiency considerably protected mice from the development of streptozotocin (STZ)-induced diabetes. The protective effect of MyD88 deficiency correlated with increased expression of the immunoregulatory enzyme indoleamine 2,3-dioxygenase (IDO) in pancreatic lymph nodes from STZ-treated mice and in bone marrow-derived dendritic cells (BMDC) stimulated with apoptotic cells...
2018: PloS One
Kendall F Moseley, Máire E Doyle, Suzanne M Jan De Beur
BACKGROUND: Paradoxically, elderly persons with type 2 diabetes mellitus (T2DM) fracture despite having higher bone density than nondiabetics. Systemic factors associated with aging and T2DM may have detrimental, local effects on the skeleton. One such factor could be by altering the microenvironment of the mesenchymal stem cells (MSCs), multipotent progenitors capable of differentiating into adipocytes or osteoblasts. METHODS: Sera were obtained from four participant groups (n = 40 total, 10 per group): (1) young women with normal glucose tolerance (NGTY), (2) postmenopausal women with NGT), (3) postmenopausal women with impaired glucose tolerance (IGT), and (4) postmenopausal women with T2DM...
March 9, 2018: Endocrine Research
Marek Kawecki, Jarosław Pasek, Grzegorz Cieślar, Aleksander Sieroń, Grzegorz Knefel, Mariusz Nowak, Justyna Glik
BACKGROUND: Diabetic foot ulcer is one of the major complications of diabetes mellitus in adults. OBJECTIVES: The aim of the study was to conduct a planimetry evaluation of the effectiveness of hyperbaric oxygen therapy (HBOT) in the treatment of patients with vascular disorders caused by diabetic foot. MATERIAL AND METHODS: The study included 94 patients, 30 females (32%) and 64 males (68%), aged 33-76 years, with diabetes lasting 1.5-32 years, who underwent HBOT due to diabetic foot...
January 2018: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
Zeyad H Al-Sowygh, Abdulaziz A Al-Kheraif, Zohaib Akram, Fahim Vohra, Fawad Javed
BACKGROUND: Peri-implant soft tissue inflammatory parameters and crestal bone loss (CBL) among waterpipe smokers (WS) with and without type 2 diabetes mellitus (T2DM) remains uninvestigated. The aim of the present study was to assess peri-implant soft tissue inflammatory parameters and CBL among WS and never smokers (NS) with and without T2DM. METHODS: Demographic data and information regarding duration of implants in function, daily frequency of smoking, duration and treatment of T2DM and daily tooth brushing was collected using a questionnaire...
March 8, 2018: Journal of Periodontology
Camila Lopes Ferreira, Vinicius Clemente da Rocha, Weber José da Silva Ursi, Andrea Carvalho De Marco, Milton Santamaria, Mauro Pedrine Santamaria, Maria Aparecida Neves Jardini
BACKGROUND: Systemic conditions can influence orthodontic tooth movement. This study evaluates histologic periodontal responses to orthodontic tooth movement in diabetes-induced rats with or without periodontal disease. METHODS: Forty Wistar rats were divided according their systemic condition (SC) into diabetic (D) and non-diabetic (ND) groups. Each group was subdivided into control (C), orthodontic tooth movement (OM), ligature-induced periodontitis (P) and ligature-induced periodontitis with orthodontic movement (P+OM) groups...
February 22, 2018: Journal of Periodontology
C Randall Harrell, Bojana Simovic Markovic, Crissy Fellabaum, Aleksandar Arsenijevic, Valentin Djonov, Vladislav Volarevic
BACKGROUND: Pericytes are multipotent cells present in every vascularized tissue in the body. Despite the fact that they are well-known for more than a century, pericytes are still representing cells with intriguing properties. This is mainly because of their heterogeneity in terms of definition, tissue distribution, origin, phenotype and multi-functional properties. The body of knowledge illustrates importance of pericytes in the regulation of homeostatic and healing processes in the body...
March 9, 2018: Journal of Biomedical Science
Annas Al-Sharea, Andrew J Murphy, L A Huggins, Y Hu, Ira J Goldberg, Prabhakara R Nagareddy
BACKGROUND AND AIMS: Leukocytosis, particularly monocytosis, has been shown to promote atherosclerosis in both diabetic and non-diabetic mouse models. We previously showed that hyperglycemia independently promotes monocytosis and impairs the resolution of atherosclerosis. Since patients with chronic diabetes often develop dyslipidemia and also have increased risk for atherosclerosis, we sought to examine how controlling blood glucose affects atherosclerosis development in the presence of severe hyperlipidemia...
March 2, 2018: Atherosclerosis
P Zhang, W Zhang, D Zhang, M Wang, R Aprecio, N Ji, O Mohamed, Y Li, Y Ding, Q Wang
BACKGROUND AND OBJECTIVE: Periodontitis is an increasingly prevalent complication of diabetes mellitus (known as diabetes mellitus-associated periodontitis), and 25-hydroxyvitamin D3 (25VD3 ) was recently found to be a critical regulator of innate immunity in this disease, but the underlying mechanisms remain poorly understood. T-cell protein tyrosine phosphatase non-receptor type 2 (PTPN2) is a potential downstream protein of the 25VD3 /vitamin D receptor pathway. The aim of this study was to investigate the regulation of PTPN2 in periodontal inflammation in diabetes mellitus-associated periodontitis...
March 8, 2018: Journal of Periodontal Research
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