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https://www.readbyqxmd.com/read/29334695/complex-interplay-among-adiposity-insulin-resistance-and-bone-health
#1
REVIEW
C Ma, K T Tonks, J R Center, D Samocha-Bonet, J R Greenfield
Obesity and osteoporosis are common public health problems. Paradoxically, while obesity is associated with higher bone density, type 2 diabetic obese individuals have an increased fracture risk. Although obesity and insulin resistance co-exist, some obese individuals remain insulin-sensitive. We suggest that the apparent paradox relating obesity, bone density and fracture risk in type 2 diabetes may be at least partly influenced by differences in bone strength and quality between insulin-resistant and insulin-sensitive obese individuals...
January 15, 2018: Clinical Obesity
https://www.readbyqxmd.com/read/29333578/insulin-resistance-and-bone-a-biological-partnership
#2
Caterina Conte, Solomon Epstein, Nicola Napoli
Despite a clear association between type 2 diabetes (T2D) and fracture risk, the pathogenesis of bone fragility in T2D has not been clearly elucidated. Insulin resistance is the primary defect in T2D. Insulin signalling regulates both bone formation and bone resorption, but whether insulin resistance can affect bone has not been established. On the other hand, evidence exists that bone might play a role in the regulation of glucose metabolism. This article reviews the available experimental and clinical evidence on the interplay between bone and insulin resistance...
January 15, 2018: Acta Diabetologica
https://www.readbyqxmd.com/read/29333574/unique-metabolic-activation-of-adipose-tissue-macrophages-in-obesity-promotes-inflammatory-responses
#3
Lily Boutens, Guido J Hooiveld, Sourabh Dhingra, Robert A Cramer, Mihai G Netea, Rinke Stienstra
AIMS/HYPOTHESIS: Recent studies have identified intracellular metabolism as a fundamental determinant of macrophage function. In obesity, proinflammatory macrophages accumulate in adipose tissue and trigger chronic low-grade inflammation, that promotes the development of systemic insulin resistance, yet changes in their intracellular energy metabolism are currently unknown. We therefore set out to study metabolic signatures of adipose tissue macrophages (ATMs) in lean and obese conditions...
January 14, 2018: Diabetologia
https://www.readbyqxmd.com/read/29332675/sleep-duration-and-incidence-of-type-2-diabetes-the-multiethnic-cohort
#4
Gertraud Maskarinec, Simone Jacobs, Yvette Amshoff, Veronica W Setiawan, Yurii B Shvetsov, Adrian A Franke, Laurence N Kolonel, Christopher A Haiman, Loïc Le Marchand
OBJECTIVES: As an emerging risk factor for the rising incidence of type 2 diabetes, we examined sleep duration in relation to type 2 diabetes and several biomarkers. DESIGN: Prospective cohort recruited 1993-1996. SETTING: The Multiethnic Cohort in Hawaii and California. PARTICIPANTS: A cohort of 151,691 White, African American, Japanese American, Native Hawaiian, and Latino participants; 9695 cohort members had biomarker measurements...
February 2018: Sleep Health
https://www.readbyqxmd.com/read/29332422/unexpected-management-behaviors-in-adolescents-with-type-1-diabetes-using-sensor-augmented-pump-therapy
#5
Mary Binsu Abraham, Kristine Heels, Jennifer A Nicholas, Carol Cole, Rebecca Gebert, Julie Klimek, Tracey Jopling, Geoffrey Ambler, Fergus Cameron, Elizabeth Davis, Timothy W Jones
BACKGROUND: Continuous glucose monitoring can improve glycemic outcomes in individuals with type 1 diabetes. However, the constant exposure to real-time glucose levels can sometimes lead the individual to make some risky choices to address the glycemic excursions. Hence, the purpose of this study was to explore the aberrant management behaviors of youth with type 1 diabetes on sensor-augmented pump therapy (SAPT). METHODS: Participants in a clinical trial using SAPT on Medtronic MiniMed™ 640G pump who experienced deteriorating glycemic control or unexplained hypoglycemia were identified by the health care professional...
January 1, 2018: Journal of Diabetes Science and Technology
https://www.readbyqxmd.com/read/29332196/bioelectronic-modulation-of-carotid-sinus-nerve-activity-in-the-rat-a-potential-therapeutic-approach-for-type-2-diabetes
#6
Joana F Sacramento, Daniel J Chew, Bernardete F Melo, Matteo Donegá, Wesley Dopson, Maria P Guarino, Alison Robinson, Jesus Prieto-Lloret, Sonal Patel, Bradley J Holinski, Nishan Ramnarain, Victor Pikov, Kristoffer Famm, Silvia V Conde
AIMS/HYPOTHESIS: A new class of treatments termed bioelectronic medicines are now emerging that aim to target individual nerve fibres or specific brain circuits in pathological conditions to repair lost function and reinstate a healthy balance. Carotid sinus nerve (CSN) denervation has been shown to improve glucose homeostasis in insulin-resistant and glucose-intolerant rats; however, these positive effects from surgery appear to diminish over time and are heavily caveated by the severe adverse effects associated with permanent loss of chemosensory function...
January 14, 2018: Diabetologia
https://www.readbyqxmd.com/read/29331269/clinical-benefits-of-autologous-haematopoietic-stem-cell-transplantation-in-type-1-diabetes-patients
#7
B Gu, H Miao, J Zhang, J Hu, W Zhou, W Gu, W Wang, G Ning
Type 1 diabetes (T1D) is characterized by severe damage to pancreas islet function through immunological attack; therefore, it is also called 'insulin-dependent diabetes'. The present study aimed to evaluate the safety and clinical efficacy of autologous haematopoietic stem cell transplantation (AHSCT) in adolescent patients with newly diagnosed T1D. A phase-II prospective, parallel-assignment, non-randomized trial was conducted from March 2008 to December 2011 with 40 T1D patients, of whom 20 received AHSCT therapy and 20 were treated only with insulin injections...
December 22, 2017: Diabetes & Metabolism
https://www.readbyqxmd.com/read/29331050/exercise-counteracts-lipotoxicity-by-improving-lipid-turnover-and-lipid-droplet-quality
#8
Evelyn Zacharewicz, Matthijs K C Hesselink, Patrick Schrauwen
The incidence of obesity and metabolic disease, such as type 2 diabetes mellitus (T2D), are rising globally. Dietary lipid over-supply leads to lipid accumulation at ectopic sites, such as skeletal muscle. Ectopic lipid storage is highly correlated with insulin resistance and T2D, likely due to a loss of metabolic flexibility - the capacity to switch between fat and glucose oxidation upon insulin stimulation - and cellular dysfunction because of lipotoxicity. However, muscle lipid levels are also elevated in endurance trained athletes, presenting a paradoxical phenotype of increased intramuscular lipids along with high insulin sensitivity - the "athletes' paradox"...
January 13, 2018: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29330917/mitochondrial-respiratory-capacity-remains-stable-despite-a-comprehensive-and-sustained-increase-in-insulin-sensitivity-in-obese-patients-undergoing-gastric-bypass-surgery
#9
Michael T Lund, Steen Larsen, Merethe Hansen, Julie Courraud, Andrea K Floyd, Mikael Støckel, Jørn W Helge, Flemming Dela
AIM: It has been proposed, but not yet demonstrated by convincing evidence in published articles, that insulin resistance and mitochondrial respiratory function are causally-related physiological phenomena. Here, we tested the prediction that weight loss induced increase in insulin sensitivity will correlate with a corresponding change in mitochondrial respiratory capacity over the same time period. METHODS: Insulin sensitivity was evaluated using the hyperinsulinaemic-euglycemic clamp technique and skeletal muscle mitochondrial respiratory capacity was evaluated by high-resolution respirometry in 26 patients with obesity...
January 13, 2018: Acta Physiologica
https://www.readbyqxmd.com/read/29330456/20-hete-promotes-glucose-stimulated-insulin-secretion-in-an-autocrine-manner-through-ffar1
#10
Sorin Tunaru, Remy Bonnavion, Isabell Brandenburger, Jens Preussner, Dominique Thomas, Klaus Scholich, Stefan Offermanns
The long-chain fatty acid receptor FFAR1 is highly expressed in pancreatic β-cells. Synthetic FFAR1 agonists can be used as antidiabetic drugs to promote glucose-stimulated insulin secretion (GSIS). However, the physiological role of FFAR1 in β-cells remains poorly understood. Here we show that 20-HETE activates FFAR1 and promotes GSIS via FFAR1 with higher potency and efficacy than dietary fatty acids such as palmitic, linoleic, and α-linolenic acid. Murine and human β-cells produce 20-HETE, and the ω-hydroxylase-mediated formation and release of 20-HETE is strongly stimulated by glucose...
January 12, 2018: Nature Communications
https://www.readbyqxmd.com/read/29330446/effect-of-puerarin-in-promoting-fatty-acid-oxidation-by-increasing-mitochondrial-oxidative-capacity-and-biogenesis-in-skeletal-muscle-in-diabetic-rats
#11
Xiu-Fang Chen, Lei Wang, Yong-Zheng Wu, Shi-Yu Song, Hai-Yan Min, Yan Yang, Xuan He, Qiao Liang, Long Yi, Yong Wang, Qian Gao
BACKGROUND: Type 2 diabetes is characterized by dyslipidemia and the accumulation of lipids in non-adipose tissue, including skeletal muscle. Puerarin, which is a natural isoflavonoid isolated from the root of the plant Pueraria lobata, has been shown to have antidiabetic activity. However, the lipid-reducing effect of puerarin, in particular in skeletal muscle, has not yet been addressed. METHODS: We examined the effect of puerarin on mitochondrial function and the oxidation of fatty acids in the skeletal muscle of high-fat diet/streptozotocin-induced diabetic rats...
January 12, 2018: Nutrition & Diabetes
https://www.readbyqxmd.com/read/29330196/higher-prevalence-of-lymph-node-metastasis-in-prostate-cancer-in-patients-with-diabetes
#12
Stefan Zoltán Lutz, Tilman Todenhöfer, Robert Wagner, Jörg Hennenlotter, Jana Marlene Ferchl, Marcus Oliver Scharpf, Peter Martus, Harald Staiger, Andreas Fritsche, Arnulf Stenzl, Hans-Ulrich Häring, Martin Heni
Extract: Prostate cancer (PCa) and type 2 diabetes mellitus are under the most frequent diseases in men with a tremendous impact on morbidity and mortality (Giovannucci, et al. 2010). Incidence of many common types of cancer is known to be higher in diabetes (Giovannucci et al. 2010). However, studies reported that incidence of PCa is not increased in men with type 2 diabetes, some studies even found reduced prevalence (Kasper, et al. 2009). In contrast, PCa survival is markedly reduced in patients with coincident type 2 diabetes (Chen, et al...
January 12, 2018: Endocrine-related Cancer
https://www.readbyqxmd.com/read/29329795/omega-3-fatty-acids-and-adipose-tissue-biology
#13
REVIEW
Ondrej Kuda, Martin Rossmeisl, Jan Kopecky
This review provides evidence for the importance of white and brown adipose tissue (i.e. WAT and BAT) function for the maintenance of healthy metabolic phenotype and its preservation in response to omega-3 polyunsaturated fatty acids (omega-3 PUFA), namely in the context of diseased states linked to aberrant accumulation of body fat, systemic low-grade inflammation, dyslipidemia and insulin resistance. More specifically, the review deals with (i) the concept of immunometabolism, i.e. how adipose-resident immune cells and adipocytes affect each other and define the immune-metabolic interface; and (ii) the characteristic features of "healthy adipocytes" in WAT, which are relatively small fat cells endowed with a high capacity for mitochondrial oxidative phosphorylation, triacylglycerol/fatty acid (TAG/FA) cycling and de novo lipogenesis (DNL)...
January 9, 2018: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/29329523/early-commitment-of-cardiovascular-autonomic-modulation-in-brazilian-patients-with-congenital-generalized-lipodystrophy
#14
Clarisse Mourão Melo Ponte, Virgínia Oliveira Fernandes, Maria Helane Costa Gurgel, Izabella Tamira Galdino Farias Vasconcelos, Lia Beatriz de Azevedo Souza Karbage, Christiane Bezerra Rocha Liberato, Carlos Antônio Negrato, Marília de Brito Gomes, Ana Paula Dias Rangel Montenegro, Renan Magalhães Montenegro Júnior
BACKGROUND: Metabolic abnormalities in congenital generalized lipodystrophy (CGL) are associated with microvascular complications. However, the evaluation of different types of neuropathy in these patients, including the commitment of cardiovascular autonomic modulation, is scarce. The objective of the present study was to determine the prevalence of cardiovascular autonomic neuropathy (CAN) in patients with CGL compared with individuals with type 1 diabetes and healthy subjects. METHODS: Ten patients with CGL, 20 patients with type 1 diabetes and 20 healthy subjects were included in the study...
January 12, 2018: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/29329354/palmitate-induced-er-stress-and-inhibition-of-protein-synthesis-in-cultured-myotubes-does-not-require-toll-like-receptor-4
#15
Ben D Perry, Jill A Rahnert, Yang Xie, Bin Zheng, Myra E Woodworth-Hobbs, S Russ Price
Saturated fatty acids, such as palmitate, are elevated in metabolically dysfunctional conditions like type 2 diabetes mellitus. Palmitate has been shown to impair insulin sensitivity and suppress protein synthesis while upregulating proteolytic systems in skeletal muscle. Increased sarco/endoplasmic reticulum (ER) stress and subsequent activation of the unfolded protein response may contribute to the palmitate-induced impairment of muscle protein synthesis. In some cell types, ER stress occurs through activation of the Toll-like receptor 4 (TLR4)...
2018: PloS One
https://www.readbyqxmd.com/read/29329254/low-carbohydrate-high-protein-high-fat-diets-rich-in-livestock-poultry-and-their-products-predict-impending-risk-of-type-2-diabetes-in-chinese-individuals-that-exceed-their-calculated-caloric-requirement
#16
Ruiqi Shan, Wei Duan, Lei Liu, Jiayue Qi, Jian Gao, Yunlong Zhang, Shanshan Du, Tianshu Han, Xiuyu Pang, Changhao Sun, Xiaoyan Wu
The evidence on the association between long-term low-carbohydrate, high-fat and high-protein diets and type 2 diabetes (T2D) is controversial. Until now, data is limited for Chinese populations, especially in considering the influence of extra energy intake. In this paper, we aimed to investigate the association of low-carbohydrate, high-fat and high-protein diets with type 2 diabetes (T2D) risk in populations consuming extra calories and those with normal caloric intake, We also determined whether the association is mediated by insulin resistance (IR) or β-cell dysfunction...
January 12, 2018: Nutrients
https://www.readbyqxmd.com/read/29329189/beta-cell-death-by-cell-free-dna-and-outcome-after-clinical-islet-transplantation
#17
Boris L Gala-Lopez, Daniel Neiman, Tatsuya Kin, Doug O'Gorman, Andrew R Pepper, Andrew J Malcolm, Sheina Pianzin, Peter A Senior, Patricia Campbell, Benjamin Glaser, Yuval Dor, Ruth Shemer, A M James Shapiro
BACKGROUND: Optimizing engraftment and early survival after clinical islet transplantation is critical to long-term function, but there are no reliable, quantifiable measures to assess beta cell death. Circulating cell free DNA (cfDNA) derived from beta cells has been identified as a novel biomarker to detect cell loss, and was recently validated in new-onset type 1 diabetes and in islet transplant patients. METHODS: Herein we report beta cell cfDNA measurements after allotransplantation in 37 subjects and the correlation with clinical outcomes...
January 11, 2018: Transplantation
https://www.readbyqxmd.com/read/29328913/an-integrated-view-of-immunometabolism
#18
REVIEW
Yun Sok Lee, Joshua Wollam, Jerrold M Olefsky
The worldwide obesity epidemic has emerged as a major cause of insulin resistance and Type 2 diabetes. Chronic tissue inflammation is a well-recognized feature of obesity, and the field of immunometabolism has witnessed many advances in recent years. Here, we review the major features of our current understanding with respect to chronic obesity-related inflammation in metabolic tissues and focus on how these inflammatory changes affect insulin sensitivity, insulin secretion, food intake, and glucose homeostasis...
January 11, 2018: Cell
https://www.readbyqxmd.com/read/29328544/association-between-hedonic-hunger-and-glycemic-control-in-non-obese-and-obese-patients-with-type-2-diabetes
#19
Lorena Tsui Fun Cheung, Gary Tin Choi Ko, Francis Chun Chung Chow, Alice Pik Shan Kong
AIMS/ INTRODUCTION: Higher hedonic hunger has been observed in obese individuals compared to those without obesity, but little is known about its association with glycemic management. We aimed to examine the association between hedonic hunger and glycemic control in non-obese and obese patients with type 2 diabetes (T2D). METHODS: Between April and November 2016, a total of 211 T2D patients who underwent comprehensive diabetes assessments at a university-affiliated hospital were recruited into two groups according to body mass index (BMI): non-obese (BMI) = 18...
January 12, 2018: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/29327406/short-and-medium-term-efficacy-of-sodium-glucose-co-transporter-2-sglt-2-inhibitors-a-meta-analysis-of-randomized-clinical-trials
#20
Matteo Monami, Francesco Liistro, Alessia Scatena, Besmir Nreu, Edoardo Mannucci
AIMS: Sodium glucose co-transport-2 (SGLT-2) inhibitors reduce tubular glucose reabsorption, producing a reduction of blood glucose without stimulating insulin release. Aim of this meta-analysis is the systematic collection of available data from randomized trials, in order to establish the durability of the efficacy of SGLT-2 inhibitors on glycemic control and body mass index. METHODS: A meta-analysis was performed including all trials with a duration of at least 12 weeks, comparing SGLT-2 inhibitors with a non-SGLT-2 inhibitor agents in type 2 diabetes...
January 12, 2018: Diabetes, Obesity & Metabolism
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