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https://www.readbyqxmd.com/read/28218468/igf-1-receptor-expression-on-circulating-osteoblast-progenitor-cells-predicts-tissue-based-bone-formation-rate-and-response-to-teriparatide-in-premenopausal-women-with-idiopathic-osteoporosis
#1
Adi Cohen, Stavroula Kousteni, Brygida Bisikirska, Jayesh G Shah, J Sanil Manavalan, Robert R Recker, Joan Lappe, David W Dempster, Hua Zhou, Donald J McMahon, Mariana Bucovsky, Mafo Kamanda-Kosseh, Julie Stubby, Elizabeth Shane
We have previously reported that premenopausal women with idiopathic osteoporosis (IOP) have profound microarchitectural deficiencies and heterogeneous bone remodeling. Those with the lowest bone formation rate have higher baseline serum IGF-1 levels and less robust response to teriparatide. Because IGF-1 stimulates bone formation and is critical for teriparatide action on osteoblasts, these findings suggest a state of IGF-1 resistance in some IOP women. To further investigate the hypothesis that osteoblast and IGF-1 related mechanisms mediate differential responsiveness to teriparatide in IOP, we studied circulating osteoblast progenitor (COP) cells and their IGF-1 receptor (IGF-1R) expression...
February 20, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28214555/identification-of-a-fatty-acid-binding-protein4-ucp2-axis-regulating-microglial-mediated-neuroinflammation
#2
Cayla M Duffy, Hongliang Xu, Joshua P Nixon, David A Bernlohr, Tammy A Butterick
Hypothalamic inflammation contributes to metabolic dysregulation and the onset of obesity. Dietary saturated fats activate microglia via a nuclear factor-kappa B (NFκB) mediated pathway to release pro-inflammatory cytokines resulting in dysfunction or death of surrounding neurons. Fatty acid binding proteins (FABPs) are lipid chaperones regulating metabolic and inflammatory pathways in response to fatty acids. Loss of FABP4 in peripheral macrophages via either molecular or pharmacologic mechanisms results in reduced obesity-induced inflammation via a UCP2-redox based mechanism...
February 15, 2017: Molecular and Cellular Neurosciences
https://www.readbyqxmd.com/read/28212318/alcohol-%C3%A2-adipose%C3%A2-tissue%C3%A2-and%C3%A2-lipid%C3%A2-dysregulation
#3
Jennifer L Steiner, Charles H Lang
Chronic alcohol consumption perturbs lipid metabolism as it increases adipose tissue lipolysis and leads to ectopic fat deposition within the liver and the development of alcoholic fatty liver disease. In addition to the recognition of the role of adipose tissue derived fatty acids in liver steatosis, alcohol also impacts other functions of adipose tissue and lipid metabolism. Lipid balance in response to long-term alcohol intake favors adipose tissue loss and fatty acid efflux as lipolysis is upregulated and lipogenesis is either slightly decreased or unchanged...
February 16, 2017: Biomolecules
https://www.readbyqxmd.com/read/28207742/narciclasine-attenuates-diet-induced-obesity-by-promoting-oxidative-metabolism-in-skeletal-muscle
#4
Sofi G Julien, Sun-Yee Kim, Reinhard Brunmeir, Joanna R Sinnakannu, Xiaojia Ge, Hongyu Li, Wei Ma, Jadegoud Yaligar, Bhanu Prakash Kn, Sendhil S Velan, Pia V Röder, Qiongyi Zhang, Choon Kiat Sim, Jingyi Wu, Marta Garcia-Miralles, Mahmoud A Pouladi, Wei Xie, Craig McFarlane, Weiping Han, Feng Xu
Obesity develops when caloric intake exceeds metabolic needs. Promoting energy expenditure represents an attractive approach in the prevention of this fast-spreading epidemic. Here, we report a novel pharmacological strategy in which a natural compound, narciclasine (ncls), attenuates diet-induced obesity (DIO) in mice by promoting energy expenditure. Moreover, ncls promotes fat clearance from peripheral metabolic tissues, improves blood metabolic parameters in DIO mice, and protects these mice from the loss of voluntary physical activity...
February 2017: PLoS Biology
https://www.readbyqxmd.com/read/28198109/progenitors-in-peripheral-nerves-launch-heterotopic-ossification
#5
Elizabeth A Olmsted-Davis, Elizabeth A Salisbury, Diana Hoang, Eleanor L Davis, ZaWaunyka Lazard, Corinne Sonnet, Thomas A Davis, Jonathan A Forsberg, Alan R Davis
Studies presented here, using a murine model of bone morphogenetic protein type 2 (BMP2)-induced heterotopic ossification (HO) show that the protein initiates HO by signaling through progenitors in the endoneurium of peripheral nerves. In the mouse, these cells were identified in the endoneurium one day after BMP2 induction using antibody against phosphoSMAD (PS) 1, 5, and 8. Studies conducted in a tracking mouse that contains a tamoxifen-regulated Wnt1-Cre recombinase crossed with a td Tomato red (TR) reporter (Wnt1(CreErt) :Ai9Tm) confirmed their neural origin...
February 15, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28194099/gut-to-brain-dysbiosis-mechanisms-linking-western-diet-consumption-the-microbiome-and-cognitive-impairment
#6
REVIEW
Emily E Noble, Ted M Hsu, Scott E Kanoski
Consumption of a Western Diet (WD) that is high in saturated fat and added sugars negatively impacts cognitive function, particularly mnemonic processes that rely on the integrity of the hippocampus. Emerging evidence suggests that the gut microbiome influences cognitive function via the gut-brain axis, and that WD factors significantly alter the proportions of commensal bacteria in the gastrointestinal tract. Here we review mechanisms through which consuming a WD negatively impacts neurocognitive function, with a particular focus on recent evidence linking the gut microbiome with dietary- and metabolic-associated hippocampal impairment...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28191490/dietary-triglycerides-as-signaling-molecules-that-influence-reward-and-motivation
#7
Chloé Berland, Céline Cansell, Thomas S Hnasko, Christophe Magnan, Serge Luquet
The reinforcing and motivational aspects of food are tied to the release of the dopamine in the mesolimbic system (ML). Free fatty acids from triglyceride (TG)-rich particles are released upon action of TG-lipases found at high levels in peripheral oxidative tissue (muscle, heart), but also in the ML. This suggests that local TG-hydrolysis in the ML might regulate food seeking and reward. Indeed, evidence now suggests that dietary TG directly target the ML to regulate amphetamine-induced locomotion and reward seeking behavior...
June 2016: Current Opinion in Behavioral Sciences
https://www.readbyqxmd.com/read/28186649/bone-morphogenetic-protein-7-bmp-7-augments-insulin-sensitivity-in-mice-with-type-ii-diabetes-mellitus-by-potentiating-pi3k-akt-pathway
#8
Tandrika Chattopadhyay, Rajiv Ranjan Singh, Sarika Gupta, Avadhesha Surolia
A direct link between development of insulin resistance and the presence of chronic inflammation, in case of obesity exists, with cytokines playing an important role in glucose metabolism. Members of TGF-β superfamily, including bone morphogenetic proteins (BMPs), have been shown to be involved in islet morphogenesis, establishment of β-cell mass and adipose cell fate determination. Here, we demonstrate a novel and direct role of BMP-4 and -7 in the regulation of glucose homeostasis and insulin resistance...
February 10, 2017: BioFactors
https://www.readbyqxmd.com/read/28181695/later-age-at-onset-of-independent-walking-is-associated-with-lower-bone-strength-at-fracture-prone-sites-in-older-men
#9
Alex Ireland, Stella Muthuri, Joern Rittweger, Judith E Adams, Kate A Ward, Diana Kuh, Rachel Cooper
Later age at onset of independent walking is associated with lower leg bone strength in childhood and adolescence. However it is unknown whether these associations persist into older age, or whether they are evident at axial (central) or upper limb sites. Therefore we examined walking age obtained at 2y and bone outcomes obtained by dual-energy X-ray absorptiometry (DXA) and peripheral quantitative computed tomography (pQCT) scans at 60-64y in a nationally-representative cohort study of British people, the MRC National Survey of Health and Development...
February 9, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28181167/adherence-to-mediterranean-diet-is-associated-with-methylation-changes-in-inflammation-related-genes-in-peripheral-blood-cells
#10
A Arpón, J I Riezu-Boj, F I Milagro, C Razquin, M A Martínez-González, D Corella, R Estruch, R Casas, M Fitó, E Ros, J Salas-Salvadó, J A Martínez
Epigenetic processes, including DNA methylation, might be modulated by environmental factors such as the diet, which in turn have been associated with the onset of several diseases such as obesity or cardiovascular events. Meanwhile, Mediterranean diet (MedDiet) has demonstrated favourable effects on cardiovascular risk, blood pressure, inflammation and other complications related to excessive adiposity. Some of these effects could be mediated by epigenetic modifications. Therefore, the objective of this study was to investigate whether the adherence to MedDiet is associated with changes in the methylation status from peripheral blood cells...
February 8, 2017: Journal of Physiology and Biochemistry
https://www.readbyqxmd.com/read/28180060/gprc6a-jack-of-all-metabolism-or-master-of-none
#11
REVIEW
Min Pi, Satoru Kenneth Nishimoto, L Darryl Quarles
BACKGROUND: GPRC6A, a widely expressed G-protein coupled receptor, is proposed to be a master regulator of complex endocrine networks and metabolic processes. GPRC6A is activated by multiple ligands, including osteocalcin (Ocn), testosterone (T), basic amino acids, and various cations. SCOPE OF REVIEW: We review the controversy surrounding GPRC6A functions. In mice, GPRC6A is proposed to integrate metabolic functions through the coordinated secretion of hormones, including insulin, GLP-1, T, and IL-6, and direct effects of this receptor to control glucose and fat metabolism in the liver, skeletal muscle, and fat...
February 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/28178390/metabolic-and-hemodynamic-effects-of-sodium-dependent-glucose-co-transporter-2-inhibitors-on-cardio-renal-protection-in-the-treatment-of-patients-with-type-2-diabetes-mellitus
#12
REVIEW
Atsunori Kashiwagi, Hiroshi Maegawa
The specific Na+/glucose co-transporter 2 inhibitors (SGLT2 inhibitors) inhibit glucose reabsorption in proximal renal tubular cells, and both fasting and postprandial glucose significantly decrease due to urinary glucose loss. As a result, pancreatic β-cell function and peripheral insulin action significantly improve with relief from glucose toxicity. Furthermore, whole body energy metabolism changes to relative glucose deficiency and triggers increased lipolysis in fat cells, and fatty acid oxidation and then ketone body production in the liver during treatment with SGLT2 inhibitors...
February 8, 2017: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/28177704/the-rab-gtpase-activating-protein-tbc1d1-is-critical-for-maintaining-normal-glucose-homeostasis-and-%C3%AE-cell-mass
#13
Sabina Paglialunga, Genevieve Simnett, Holly Robson, Monica Hoang, Renjitha Pillai, Alicia M Arkell, Jeremy A Simpson, Arend Bonen, Mark Huising, Jamie W Joseph, Graham P Holloway
TBC1D1, a Rab-GTPase activating protein, is a paralogue of AS160, and has been implicated in the canonical insulin-signaling cascade in peripheral tissues. More recently, TBC1D1 was identified in rat and human pancreatic islets, however the islet function of TBC1D1 remains not fully understood. We examined the role of TBC1D1 in glucose homeostasis and insulin secretion utilizing a rat knockout (KO) model. Chow-fed TBC1D1 KO rats had improved insulin action but impaired glucose-tolerance test (GTT) and a lower insulin response during an ipGTT compared to WT rats...
January 31, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28176796/depurinized-milk-downregulates-rat-thymus-myd88-akt-p38-function-nf-%C3%AE%C2%BAb-mediated-inflammation-caspase-1-activity-but-not-the-endonuclease-pathway-in-vitro-in-vivo-study
#14
Gordana Kocic, Andrej Veljkovic, Hristina Kocic, Miodrag Colic, Dusan Mihajlovic, Katarina Tomovic, Svetlana Stojanovic, Andrija Smelcerovic
The aim of this study was the evaluation of 15 days dietary regimen of depurinized (DP) milk (obtained using our patented technological procedures) or 1.5% fat UHT milk instead of standard chow diet, on rat thymus and bone marrow MyD88/Akt/p38, NF-κB, caspase-1 and endonuclease pathways, in relation to peripheral blood cell composition. To determine whether the reduced mass of the thymus is a consequence of the direct effect of DP/UHT milk on apoptosis of thymocytes, in vitro Annexin-V-FITC/PI assay was performed...
February 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28168620/-diagnostic-criteria-in-mr-neurography
#15
P Bäumer
Peripheral neuropathies are frequent and can mostly be correctly diagnosed by clinical examination and electrophysiology; however, diagnostically difficult cases are sometimes encountered especially with respect to precise localization of nerve lesions. Imaging of the peripheral nervous system has been shown to provide additional useful diagnostic information. In addition to the more widely available nerve sonography, magnetic resonance neurography (MRN) is the method of choice in diagnostically complex cases...
February 6, 2017: Der Radiologe
https://www.readbyqxmd.com/read/28161439/lipid-signaling-and-fat-storage-in-the-dark-eyed-junco
#16
Jacqueline M Ho, Christine M Bergeon Burns, Nikki M Rendon, Kimberly A Rosvall, Heather B Bradshaw, Ellen D Ketterson, Gregory E Demas
Seasonal hyperphagia and fattening promote survivorship in migratory and wintering birds, but reduced adiposity may be more advantageous during the breeding season. Factors such as photoperiod, temperature, and food predictability are known environmental determinants of fat storage, but the underlying neuroendocrine mechanisms are less clear. Endocannabinoids and other lipid signaling molecules regulate multiple aspects of energy balance including appetite and lipid metabolism. However, these functions have been established primarily in mammals; thus the role of lipid signals in avian fat storage remains largely undefined...
February 1, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28161330/testosterone-increases-ccl-2-expression-in-visceral-adipose-tissue-from-obese-women-of-reproductive-age
#17
Nicolás Crisosto, Cristián Flores, Manuel Maliqueo, Bárbara Echiburú, Jaime Vásquez, Fernando Maluenda, Teresa Sir-Petermann
CONTEXT: Hyperandrogenic states and obesity in women are associated with insulin-resistance. Androgens reduce glucose uptake in adipose cells and increase TNFα production in peripheral monocytes. Inflammatory cytokines have a known detrimental effect on insulin resistance. The aim of the present study was to explore the role of testosterone in local cytokine production in visceral adipose tissue from women of reproductive age. DESIGN: Twenty-four women 18-40 years old, undergoing elective abdominal surgery for benign and non-inflammatory conditions, were recruited for the study...
February 1, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28155720/effects-of-8-week-swimming-training-on-carotid-arterial-stiffness-and-hemodynamics-in-young-overweight-adults
#18
Wen-Xue Yuan, Hai-Bin Liu, Feng-Shan Gao, Yan-Xia Wang, Kai-Rong Qin
BACKGROUND: Exercise has been found to either reduce or increase arterial stiffness. Land-based exercise modalities have been documented as effective physical therapies to decrease arterial stiffness. However, these land-based exercise modalities may not be suitable for overweight individuals, in terms of risks of joint injury. The purpose of this study was to determine the effects of 8-week swimming training and 4-week detraining on carotid arterial stiffness and hemodynamics in young overweight adults...
December 28, 2016: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28153695/lipid-load-in-peripheral-blood-mononuclear-cells-impact-of-food-consumption-dietary-macronutrients-extracellular-lipid-availability-and-demographic-factors
#19
Fatima Ameer, Rimsha Munir, Hina Usman, Rida Rashid, Muhammad Shahjahan, Shahida Hasnain, Nousheen Zaidi
Lipid-load in peripheral blood mononuclear cells (PBMCs) has recently gained attention of the researchers working on nutritional regulation of metabolic health. Previous works have indicated that the metabolic circuitries in the circulating PBMCs are influenced by dietary-intake and macronutrient composition of diet. In the present work, we analyzed the impact of diet and dietary macronutrients on PBMCs' lipid-load. The overall analyses revealed that dietary carbohydrates and fats combinatorially induce triglyceride accumulation in PBMCs...
January 30, 2017: Biochimie
https://www.readbyqxmd.com/read/28153015/the-effects-of-short-term-high-fat-feeding-on-exercise-capacity-multi-tissue-transcriptome-changes-by-rna-sequencing-analysis
#20
Ya Xiao, Wanshan Wang, Liguo Chen, Jieyu Chen, Pingping Jiang, Xiuqiong Fu, Xiaoli Nie, Hiuyee Kwan, Yanyan Liu, Xiaoshan Zhao
BACKGROUND: The effects of short-term high fat diets on physiology are elusive and the molecular changes following fat overconsumption remain largely unknown. In this study, we aimed to evaluate exercise capacity in mice fed with a high fat diet (HFD) for 3 days and investigate the molecular mechanisms in the early response to high-fat feeding. METHODS: Exercise capacity was assessed by weight-loaded swimming test in mice fed a control diet (10 kcal% fat) or a HFD (60 kcal% fat) for 3 days...
February 2, 2017: Lipids in Health and Disease
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