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https://www.readbyqxmd.com/read/28938552/novel-pleiotropic-effects-of-bioactive-phospholipids-in-human-lung-cancer-metastasis
#1
Gabriela Schneider, Zachariah Payne Sellers, Kamila Bujko, Sham S Kakar, Magda Kucia, Mariusz Z Ratajczak
We previously proposed that one of the unwanted side effects of chemotherapy and radiotherapy is the increase in several peptide- and non-peptide based chemoattractants in damaged tissues, leading to induction of a prometastatic microenvironment for remaining cancer cells. Herein, we turned out our attention to a potential role of bioactive phospholipids (BphsLs), such as sphingosine-1-phosphate (S1P), ceramide-1-phosphate (C1P), lysophosphatidylcholine (LPC), and lysophosphatidic acid (LPA) in lung cancer (LC) metastasis...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938444/lack-of-lrp5-signaling-in-osteoblasts-sensitizes-male-mice-to-diet-induced-disturbances-in-glucose-metabolism
#2
Soohyun P Kim, Julie L Frey, Zhu Li, Brian C Goh, Ryan C Riddle
Wnt signaling through the Lrp5 co-receptor regulates osteoblast maturation, matrix mineralization, and intermediary metabolism. In the mature osteoblast, signals downstream of Lrp5 are required for normal long-chain fatty acid β-oxidation and mice rendered deficient for this co-receptor in osteoblasts and osteocytes accumulate body fat with elevated serum lipid levels, but retain normal insulin sensitivity. In this study, we challenged Lrp5 mutant mice with a high fat diet to determine if they are more susceptible to diet-induced disturbances in glucose homeostasis...
September 11, 2017: Endocrinology
https://www.readbyqxmd.com/read/28938433/type-2-diabetes-and-osteoporosis-a-guide-to-optimal-management
#3
Stavroula Paschou, Anastasia D Dede, Panagiotis G Anagnostis, Andromachi Vryonidou, Daniel Morganstein, Dimitrios G Goulis
Context: Both type 2 diabetes (T2D) and osteoporosis are affected by aging and quite often co-exist. Furthermore, the fracture risk in patients with T2D is increased. The aim of this article is to review updated information on osteoporosis and fracture risk in patients with T2D, to discuss the effects of diabetes treatment on bone metabolism, as well as the effect of anti-osteoporotic medications on the incidence and control of T2D and to provide a personalized guide to the optimal management...
June 21, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28937873/effect-of-parathyroidectomy-on-osteopontin-and-undercarboxylated-osteocalcin-in-patients-with-primary-hyperparathyroidism
#4
Raelene E Maser, M James Lenhard, Ryan T Pohlig, P Babu Balagopal, Raafat Abdel-Misih
PURPOSE: Surgical treatment for primary hyperparathyroidism (PHPT) improves bone metabolism. Osteocalcin (OC) and its undercarboxylated form (ucOC) are associated with bone and energy metabolism. Osteopontin (OPN), a multifunctional protein expressed in bone, is involved in resorption, along with β-carboxyl-terminal cross-linking telopeptide of type 1 collagen (β-CTX), and osteoprotegerin (OPG). Our aim was to investigate these biomarkers of bone metabolism in patients with PHPT. METHODS: We examined 30 individuals with PHPT, in a clinical research facility, before and 1 month following parathyroidectomy...
September 22, 2017: Endocrine Research
https://www.readbyqxmd.com/read/28937054/the-importance-of-bone-biopsy-in-chronic-kidney-disease-mineral-bone-disorders
#5
REVIEW
Periklis Dousdampanis, Kostantina Trigka
Renal osteodystrophy (ROD) is not a uniform bone disease; it is a heterogeneous group of metabolic bone diseases due to chronic kidney disease (CKD). The traditional term of ROD does not accurately include the wide spectrum of "CKD-mineral and bone disorder" (CKD-MBD) and has been restricted to define the several specific histologic disturbances of bone disease associated with CKD. Circulating parathyroid hormone (PTH) and total alkaline phosphatase levels do not always reflect bone turnover in CKD-MBD, whereas bone biopsy provides precise information regarding bone pathology...
September 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28936199/bone-status-in-a-patient-with-insulin-like-growth-factor-1-receptor-deletion-syndrome-bone-quality-and-structure-evaluation-using-dual-energy-x-ray-absorptiometry-peripheral-quantitative-computed-tomography-and-quantitative-ultrasonography
#6
Paola Pelosi, Elisabetta Lapi, Loredana Cavalli, Alberto Verrotti, Marilena Pantaleo, Maurizio de Martino, Stefano Stagi
Haploinsufficiency of the insulin-like growth factor (IGF)-1 receptor (IGF1R) gene is a rare, probably under-diagnosed, cause of short stature. However, the effects of IGF1R haploinsufficiency on glucose metabolism, bone status, and metabolism have rarely been investigated. We report the case of a patient referred to our center at the age of 18 months for short stature, failure to thrive, and Silver-Russell-like phenotype. Genetic analysis did not show hypomethylation of the 11p15.5 region or uniparental disomy of chromosome 7...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28935484/effects-of-low-level-laser-therapy-and-platelet-concentrate-on-bone-repair-histological-histomorphometric-immunohistochemical-and-radiographic-study
#7
Thiago Hoffman Jonasson, Rafael Zancan, Lucas de Oliveira Azevedo, Ana Claudia Fonseca, Marcela Claudino da Silva, Allan Fernando Giovanini, João Cesar Zielak, Melissa Rodrigues de Araujo
PURPOSE: Low-level laser therapy (LLLT) can increase bone metabolism, cell proliferation, and maturation, and reduce inflammation, while platelet concentrate (PC) assists bone healing process by releasing proteins and growth factors. Here, we evaluated the efficacy of combined LLLT and PC therapy in the healing of critical-size bone defects. MATERIALS AND METHODS: Calvarial critical-size defects 5 mm in diameter were made in 48 Wistar rats. Bones were removed, milled, and used as autogenous bone grafts...
August 19, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28934935/treatment-and-outcomes-of-tumor-induced-osteomalacia-associated-with-phosphaturic-mesenchymal-tumors-retrospective-review-of-12-patients
#8
Qing-Yao Zuo, Hong Wang, Wei Li, Xiao-Hui Niu, Yan-Hong Huang, Jia Chen, Yu-Hua You, Bao-Yue Liu, Ai-Min Cui, Wei Deng
BACKGROUND: Tumor-induced osteomalacia (TIO) is a rare paraneoplastic syndrome characterized by severe hypophosphatemia and osteomalacia. Nonspecific symptoms make the diagnosis elusive. In addition, locating the responsible tumor(s) is challenging. The aim of this study was to investigate the clinical management and outcomes of TIO. METHODS: The clinical features, diagnostic procedures, treatment, and outcomes of 12 patients were reviewed retrospectively. RESULTS: The cohort comprised six men and six women (mean age 45...
September 21, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28933009/does-iris-in-bring-bad-news-or-good-news
#9
REVIEW
Silvio Buscemi, Davide Corleo, Carola Buscemi, Carla Giordano
Irisin, a novel myokine produced in response to physical activity, promotes white-to-brown fat transdifferentiation. The name irisin referred to the ancient Greek goddess Iris, the messenger who delivered (bad) news from the gods. In mice, it has been demonstrated that irisin plays a key role in metabolic regulation, energy expenditure and glucose homeostasis. New findings from various studies carried out in both animals and humans suggest that irisin might also have other favorable effects, such as increasing bone cortical mass, preventing hepatic lipid accumulation, and improving cognitive functions, thus mediating many exercise-induced health benefits...
September 20, 2017: Eating and Weight Disorders: EWD
https://www.readbyqxmd.com/read/28929308/influence-of-obesity-on-experimental-periodontitis-in-rats-histopathological-histometric-and-immunohistochemical-study
#10
Elizangela Partata Zuza, Valdir Gouveia Garcia, Letícia Helena Theodoro, Edilson Ervolino, Luiz Fernando Veloso Favero, Mariéllen Longo, Fernando Salimon Ribeiro, Alex Tadeu Martins, Luís Carlos Spolidorio, José Antônio Sampaio Zuanon, Benedicto Egbert Corrêa de Toledo, Juliana Rico Pires
OBJECTIVES: This study assessed the influence of obesity on the progression of ligature-induced periodontitis in rats. MATERIALS AND METHODS: Forty-eight adult Wistar rats were randomly divided into two groups: the HL group (n = 24) was fed high-fat animal food to induce obesity, and the NL group (n = 24) was fed normolipidic animal food. Obesity was induced within a period of 120 days, and the induction of experimental periodontitis (EP) was subsequently performed for 30 days...
September 19, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28928419/the-histone-deacetylase-sirt6-blocks-myostatin-expression-and-development-of-muscle-atrophy
#11
Sadhana A Samant, Abhinav Kanwal, Vinodkumar B Pillai, Riyue Bao, Mahesh P Gupta
Muscle wasting, also known as cachexia, is associated with many chronic diseases, which worsens prognosis of primary illness leading to enhanced mortality. Molecular basis of this metabolic syndrome is not yet completely understood. SIRT6 is a chromatin-bound member of the sirtuin family, implicated in regulating many cellular processes, ranging from metabolism, DNA repair to aging. SIRT6 knockout (SIRT6-KO) mice display loss of muscle, fat and bone density, typical characteristics of cachexia. Here we report that SIRT6 depletion in cardiac as well as skeletal muscle cells promotes myostatin (Mstn) expression...
September 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28928054/effect-of-the-antidiabetic-agent-pioglitazone-on-bone-metabolism-in-rats
#12
Junkichi Kanda, Nobuo Izumo, Yoshiko Kobayashi, Kenji Onodera, Taketoshi Shimakura, Noriaki Yamamoto, Hideaki E Takahashi, Hiroyuki Wakabayashi
Thiazolidinediones (TZDs) are synthetic peroxisome proliferator-activated receptor gamma (PPARγ) agonists used as therapy for type 2 diabetes. However, clinical studies reported that the therapeutic modulation of PPARγ activity using TZDs may induce negative effects on bone metabolism. This study aimed to evaluate the effect of the TZD pioglitazone on bone metabolism in rats. Male Wistar rats were treated orally with pioglitazone 5 or 20 mg/kg daily for 24 weeks. Bone strength was evaluated using a 3-point bending method, and bone histomorphometry was analyzed...
August 26, 2017: Journal of Pharmacological Sciences
https://www.readbyqxmd.com/read/28927581/differential-aging-signals-in-abdominal-ct-scans
#13
Nikita V Orlov, Sokratis Makrogiannis, Luigi Ferrucci, Ilya G Goldberg
RATIONALE AND OBJECTIVES: Changes in the composition of body tissues are major aging phenotypes, but they have been difficult to study in depth. Here we describe age-related change in abdominal tissues observable in computed tomography (CT) scans. We used pattern recognition and machine learning to detect and quantify these changes in a model-agnostic fashion. MATERIALS AND METHODS: CT scans of abdominal L4 sections were obtained from Baltimore Longitudinal Study of Aging (BLSA) participants...
September 15, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28926843/the-genetic-basis-of-delayed-puberty
#14
S R Howard, Leo Dunkel
<br>The genetic control of puberty remains an important but mostly unanswered question. Late pubertal timing affects over 2% of adolescents and is associated with adverse health outcomes including short stature, reduced bone mineral density and compromised psychosocial health. Self-limited delayed puberty (DP) is a highly heritable trait, which often segregates in an autosomal dominant pattern; however, its neuroendocrine pathophysiology and genetic regulation remain unclear. Some insights into the genetic mutations that lead to familial DP have come from sequencing genes known to cause GnRH deficiency, most recently via next generation sequencing, and others from large-scale genome wide association studies in the general population...
September 18, 2017: Neuroendocrinology
https://www.readbyqxmd.com/read/28926770/1-25-oh-2d3-induces-regulatory-t-cell-differentiation-by-influencing-the-vdr-plc-%C3%AE-1-tgf-%C3%AE-1-pathway
#15
Qiang Zhou, Shengying Qin, Jinyan Zhang, Lin Zhon, Zhihai Pen, Tonghai Xing
Vitamin D has been recommended as an immune modulator in recent years, in addition to regulating calcium-phosphorous-bone metabolism. Clinical studies on organ transplantation found that vitamin D sufficiency patients were less likely to develop acute cellular rejection within one year after transplantation compared to those with vitamin D deficiency. Thus, a high percentage of regulatory T cells might play a key role in preventing acute cellular rejection (ACR). In this report, we studied the specific effects of 1,25(OH)2D3 on human T cell diff ;erentiation, and determined the potential molecule mechanism behind...
September 16, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28926512/orthosiphon-stamineus-misai-kucing-ameliorated-postmenopausal-osteoporosis-in-rat-model
#16
Rubiatul Adawiyah Bokhari, Seng Fong Lau, Suhaila Mohamed
OBJECTIVE: Orthosiphon stamineus (OS) or Misai Kucing (Java tea) is a popular herbal supplement from Southeast Asia for various metabolic, age-related diseases. This study investigated the potential use of OS leaf extracts to ameliorate osteoporosis in ovariectomized rats. METHODS: Fifty-six female Sprague-Dawley rats were randomly allocated into eight groups (n = 7): SHAM (healthy sham control); OVX (ovarietomized) nontreated rats (negative control); OVX + Remifemin (100 mg/kg body weight), and 2% green tea extract (positive controls); OVX + OS 50% ethanolic and aqueous extracts, both at either 150 or 300 mg/kg...
September 18, 2017: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/28926471/role-of-fat-soluble-vitamins-in-osteoarthritis-management
#17
Xiao-Yan Zheng, Jun Liang, Yu-Sheng Li, Min Tu
Osteoarthritis (OA) is a chronic degenerative joint disease, in which metabolic imbalance in bone is observed. The pathological mechanism of metabolic imbalance is not clear yet, but the nutritional factors, particularly the vitamins, might be intrinsic to the development and progression of OA. In this review article, we have explored databases such as PubMed, Scopus, and Google Scholar articles until the beginning of 2017 and reviewed the role of fat-soluble vitamins in pathological and therapeutic aspects of OA...
September 19, 2017: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
https://www.readbyqxmd.com/read/28926142/primary-osteoporosis-is-not-reflected-by-disease-specific-dna-methylation-or-accelerated-epigenetic-age-in-blood
#18
Eduardo Fernandez-Rebollo, Monika Eipel, Lothar Seefried, Per Hoffmann, Klaus Strathmann, Franz Jakob, Wolfgang Wagner
Osteoporosis is an age-related metabolic bone disease. Hence, osteoporotic patients might suffer from molecular features of accelerated aging, which is generally reflected by specific age-associated DNA methylation (DNAm) changes. In this study, we analyzed genome wide DNAm profiles of peripheral blood from patients with manifest primary osteoporosis and non-osteoporotic controls. Statistical analysis did not reveal any individual CG dinucleotides (CpG sites) with significant aberrant DNAm in osteoporosis. Subsequently, we analyzed if age-associated DNAm patterns are increased in OP...
September 19, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28926112/chronic-kidney-disease-and-vitamin-d-metabolism-in-human-bone-marrow-derived-mscs
#19
REVIEW
Shuanhu Zhou, Julie Glowacki
Vitamin D that is synthesized in the skin or is ingested undergoes sequential steps of metabolic activation via a cascade of cytochrome P450 enzymatic hydroxylations in the liver and kidney to produce 1α,25-dihydroxyvitamin D (1α,25(OH)2 D). There are many tissues that are able to synthesize 1α,25(OH)2 D, but the biological significance of extrarenal hydroxylases is unresolved. Human marrow-derived mesenchymal stem cells (marrow stromal cells, hMSCs) give rise to osteoblasts, and their differentiation is stimulated by 1α,25(OH)2 D...
August 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/28923463/hyperparathyroidism
#20
REVIEW
John P Bilezikian, Leonardo Bandeira, Aliya Khan, Natalie E Cusano
Primary hyperparathyroidism is a common endocrine disorder of calcium metabolism characterised by hypercalcaemia and elevated or inappropriately normal concentrations of parathyroid hormone. Almost always, primary hyperparathyroidism is due to a benign overgrowth of parathyroid tissue either as a single gland (80% of cases) or as a multiple gland disorder (15-20% of cases). Primary hyperparathyroidism is generally discovered when asymptomatic but the disease always has the potential to become symptomatic, resulting in bone loss and kidney stones...
September 15, 2017: Lancet
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