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https://www.readbyqxmd.com/read/28651330/rosiglitazone-improves-insulin-resistance-mediated-by-10-12-conjugated-linoleic-acid-in-a-male-mouse-model-of-metabolic-syndrome
#1
Shari Wang, Leela Goodspeed, Katherine E Turk, Barbara Houston, Laura J den Hartigh
Trans-10, cis-12 conjugated linoleic acid (10,12 CLA) is a dietary fatty acid that promotes weight loss and disproportionate fat loss. Obese mice fed a high fat high sucrose (HFHS) diet containing 10,12 CLA are resistant to weight gain and contain markedly reduced subcutaneous fat and adiponectin, with a concurrent lack of improvement in insulin sensitivity despite significant weight loss. Taken together, 10,12 CLA promotes a phenotype resembling PPARγ antagonism. Since thiazolidinediones such as rosiglitazone (Rosi) are used clinically to improve insulin sensitivity by activating PPARγ, with particular efficacy in subcutaneous white adipose tissue, we hypothesized that Rosi would improve glucose metabolism in mice losing weight with 10,12 CLA...
June 23, 2017: Endocrinology
https://www.readbyqxmd.com/read/28649714/exercise-during-short-term-exposure-to-hypoxia-or-hyperoxia-novel-treatment-strategies-for-type-2-diabetic-patients
#2
REVIEW
C Brinkmann, W Bloch, K Brixius
Both hypoxia (decreased oxygen availability) and hyperoxia (increased oxygen availability) have been shown to alter exercise adaptations in healthy subjects. This review aims to clarify the possible benefits of exercise during short-term exposure to hypoxia or hyperoxia for patients with type 2 diabetes mellitus (T2DM). There is evidence that exercise during short-term exposure to hypoxia can acutely increase skeletal muscle glucose uptake more than exercise in normoxia, and that post-exercise insulin sensitivity in T2DM patients is more increased when exercise is performed under hypoxic conditions...
June 26, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28647369/synthesis-of-cytochrome-c-oxidase-1-sco1-inhibits-insulin-sensitivity-by-decreasing-copper-levels-in-adipocytes
#3
Xiang-Bo Wei, Liang Guo, Yang Liu, Shui-Rong Zhou, Yuan Liu, Xin Dou, Shao-Yue Du, Meng Ding, Wan-Qiu Peng, Shu-Wen Qian, Hai-Yan Huang, Qi-Qun Tang
Dysregulation of insulin signaling leads to type 2 diabetes mellitus (T2DM) and other metabolic disorders. Obesity is an important contributor to insulin resistance, and although the understanding of this relationship has improved in recent years, the mechanism of obesity-induced insulin resistance is not completely understood. Disorders of copper metabolism tend to accompany the development of obesity, which increases the risk of insulin resistance. Synthesis of cytochrome c oxidase 1 (SCO1) functions in the assembly of cytochrome c oxidase (COX) and cellular copper homeostasis...
June 21, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28646358/metabolomics-of-diabetes-in-pregnancy
#4
REVIEW
Carolyn F McCabe, Wei Perng
PURPOSE OF REVIEW: The purpose of this review is to describe ways in which metabolomics may enhance understanding of gestational diabetes mellitus (GDM) etiology and refine current diagnostic criteria. RECENT FINDINGS: Current clinical recommendations suggest screening for GDM between 24 and 28 of gestational weeks using an oral glucose tolerance test. Despite this consensus, there are discrepancies regarding the exact criteria for GDM diagnosis. Further, emerging evidence has unveiled heterogeneous physiological pathways underlying GDM-specifically, GDM with defective insulin secretion vs...
August 2017: Current Diabetes Reports
https://www.readbyqxmd.com/read/28646079/identification-of-flavin-containing-monooxygenase-5-fmo5-as-a-regulator-of-glucose-homeostasis-and-a-potential-sensor-of-gut-bacteria
#5
Flora Scott, Sandra G Gonzalez Malagon, Brett A O'Brien, Diede Fennema, Sunil Veeravalli, Clarissa R Coveney, Ian R Phillips, Elizabeth A Shephard
We have previously identified flavin-containing monooxygenase 5 (FMO5) as a regulator of metabolic ageing. The aim of the present study was to investigate the role of FMO5 in glucose homeostasis and the impact of diet and gut flora on the phenotype of mice in which the Fmo5 gene has been disrupted (Fmo5(-/-) mice). In comparison with wild-type (WT) counterparts, Fmo5(-/-) mice are resistant to age-related changes in glucose homeostasis and maintain the higher glucose tolerance and insulin sensitivity characteristic of young animals...
June 23, 2017: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/28643477/red-wine-polyphenols-do-not-improve-obesity-associated-insulin-resistance-a-randomized-controlled-trial
#6
Jorn Woerdeman, Daniele Del Rio, Luca Calani, Etto C Eringa, Yvo M Smulders, Erik H Serné
Preclinical studies have suggested that polyphenols extracted from red wine (RWPs) favorably affect insulin sensitivity, but controversy exists on whether RWPs exert similar effects in humans. This study aimed to determine whether RWPs improve insulin sensitivity in obese volunteers. Obese (BMI>30) volunteers were randomly allocated to RWPs 600 mg/day (n = 14) or matched placebo (n = 15) in a double-blind fashion (parallel-arm) for 8 weeks. Subjects were investigated at baseline and at the end of the study (EOS)...
June 23, 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/28643356/bimagrumab-improves-body-composition-and-insulin-sensitivity-in-insulin-resistant-subjects
#7
Tania Garito, Ronenn Roubenoff, Marcus Hompesch, Linda Morrow, Katherine Gomez, Daniel Rooks, Charles Meyers, Monte Buchsbaum, Srikanth Neelakantham, Therese Swan, Lee Anne Filosa, Didier Laurent, Olivier Petricoul, Marjorie Zakaria
BACKGROUND: Skeletal muscle is a key mediator of insulin resistance. Bimagrumab, an antibody against activin receptor type II (ActRII), prevents binding of negative muscle regulators, like myostatin, and increases lean mass and decreases fat mass in animal models. OBJECTIVE: We hypothesized that an improving body composition in insulin resistant individuals could enhance insulin sensitivity. METHODS: Sixteen individuals with mean body mass index (BMI) = 29...
June 23, 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/28643218/empagliflozin-improves-left-ventricular-diastolic-dysfunction-in-a-genetic-model-of-type-2-diabetes
#8
Nadjib Hammoudi, Dongtak Jeong, Rajvir Singh, Ahmed Farhat, Michel Komajda, Eric Mayoux, Roger Hajjar, Djamel Lebeche
PURPOSE: Cardiovascular (CV) diseases in type 2 diabetes (T2DM) represent an enormous burden with high mortality and morbidity. Sodium-glucose cotransporter 2 (SGLT2) inhibitors have recently emerged as a new antidiabetic class that improves glucose control, as well as body weight and blood pressure with no increased risk of hypoglycemia. The first CV outcome study terminated with empagliflozin, a specific SGLT2 inhibitor, has shown a reduction in CV mortality and in heart failure hospitalization, suggesting a beneficial impact on cardiac function which remains to be demonstrated...
June 22, 2017: Cardiovascular Drugs and Therapy
https://www.readbyqxmd.com/read/28642713/benefits-of-substituting-sitting-with-standing-and-walking-in-free-living-conditions-for-cardiometabolic-risk-markers-cognition-and-mood-in-overweight-adults
#9
Bernard M F M Duvivier, Nicolaas C Schaper, Annemarie Koster, Linh van Kan, Harry P F Peters, Jos J Adam, Timo Giesbrecht, Esther Kornips, Martine Hulsbosch, Paul Willems, Matthijs K C Hesselink, Patrick Schrauwen, Hans H C M Savelberg
Background: We investigated whether substituting sitting with standing and self-perceived light walking in free-living conditions would improve cardiometabolic risk factors, mood, and cognition in overweight/obese adults. Methods: In a randomized, cross-over study, 24 (m/f: 13/11) sedentary overweight/obese participants (64 ± 7 years, BMI 29 ± 2 kg/m(2)) followed two activity regimens of each 4 days in free-living conditions: "Sit": sitting 13.5 h/day, standing 1.4 h/day, self-perceived light-intensity walking 0...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28642082/clinical-trial-of-the-effects-of-vitamin-d-supplementation-on-psychological-symptoms-and-metabolic-profiles-in-maintenance-methadone-treatment-patients
#10
Amir Ghaderi, Hamid Reza Banafshe, Maryam Motmaen, Morad Rasouli-Azad, Fereshteh Bahmani, Zatollah Asemi
BACKGROUND: Vitamin D deficiency may be associated with some complications including nonspecific musculoskeletal pain and periodontal disease in maintenance methadone treatment (MMT) patients. This study was designed to determine the effect of vitamin D supplementation on psychological symptoms and metabolic profiles in MMT patients. METHODS: This randomized, double-blind, placebo-controlled, clinical trial was carried out among 68 MMT patients. Participants were randomly allocated to receive either 50,000IU vitamin D supplements (n=34) or placebo (n=34) every 2weeks for 12weeks...
June 19, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28640866/diet-induced-adipose-tissue-expansion-is-mitigated-in-mice-with-a-targeted-inactivation-of-mesoderm-specific-transcript-mest
#11
Rea P Anunciado-Koza, Justin Manuel, Randall L Mynatt, Jingying Zhang, Leslie P Kozak, Robert A Koza
Interindividual variation of white adipose tissue (WAT) expression of mesoderm specific transcript (Mest), a paternally-expressed imprinted gene belonging to the α/β-hydrolase fold protein family, becomes apparent among genetically inbred mice fed high fat diet (HFD) and is positively associated with adipose tissue expansion (ATE). To elucidate a role for MEST in ATE, mice were developed with global and adipose tissue inactivation of Mest. Mice with homozygous (MestgKO) and paternal allelic (MestpKO) inactivation of Mest were born at expected Mendelian frequencies, showed no behavioral or physical abnormalities, and did not perturb expression of the Mest locus-derived microRNA miR-335...
2017: PloS One
https://www.readbyqxmd.com/read/28637315/attenuated-effects-of-bile-acids-on-glucose-metabolism-and-insulin-sensitivity-in-a-male-mouse-model-of-prenatal-undernutrition
#12
Huijuan Ma, Vicencia M Sales, Ashley R Wolf, Sathish Subramanian, Tucker J Matthews, Michael Chen, Aparna Sharma, Walt Gall, Wim Kulik, David E Cohen, Yusuke Adachi, Nicholas W Griffin, Jeffrey I Gordon, Mary-Elizabeth Patti, Elvira Isganaitis
Prenatal undernutrition and low birth weight are associated with risk of type 2 diabetes and obesity. Prenatal caloric restriction results in low birth weight, glucose intolerance, obesity, and reduced plasma bile acids (BA) in offspring mice. Since BAs can regulate systemic metabolism and glucose homeostasis, we hypothesized that BA supplementation could prevent diet-induced obesity and glucose intolerance in this model of developmental programming. Pregnant dams were food restricted by 50% from gestational days 12...
June 15, 2017: Endocrinology
https://www.readbyqxmd.com/read/28635082/targeting-risk-factors-for-type-2-diabetes-in-american-indian-youth-the-tribal-turning-point-pilot-study
#13
K A Sauder, D Dabelea, R Bailey-Callahan, S Kanott Lambert, J Powell, R James, C Percy, B F Jenks, L Testaverde, J M Thomas, R Barber, J Smiley, C W Hockett, V W Zhong, L Letourneau, K Moore, A M Delamater, E Mayer-Davis
BACKGROUND: American Indian (AI) youth are at high risk for type 2 diabetes. OBJECTIVES: To partner with Eastern Band of Cherokee Indians and Navajo Nation to develop a culturally sensitive behavioural intervention for youth (Tribal Turning Point; TTP) and assess feasibility in an 8-month randomized pilot study. METHODS: We enrolled 62 overweight/obese AI children (7-10 years) who participated with ≥1 parent/primary caregiver. Intervention participants (n = 29) attended 12 group classes and five individual sessions...
June 21, 2017: Pediatric Obesity
https://www.readbyqxmd.com/read/28634491/more-favorable-metabolic-impact-of-three-times-weekly-versus-daily-growth-hormone-treatment-in-na%C3%A3-ve-gh-deficient-children
#14
Alessandro Ciresi, Floriana Cicciò, Stefano Radellini, Valentina Guarnotta, Anna Maria Calcaterra, Carla Giordano
OBJECTIVE: To evaluate whether two different regimens of weekly injections could lead to similar auxological and metabolic effects in children with growth hormone deficiency (GHD). DESIGN: 32 GHD children (25 males, mean age 10.5 ± 2.2 yr) were randomly assigned to receive daily (group A, 16 patients) or TIW (group B, 16 patients) GHT for 12 months. METHODS: Auxological parameters, insulin-like growth factor-I (IGF-I), glucose and insulin during OGTT, glycosylated hemoglobin (HbA1c), lipid profile, the oral disposition index (DIo), the homeostasis model assessment estimate of insulin resistance (Homa-IR), and the insulin sensitivity index (ISI)...
2017: International Journal of Endocrinology
https://www.readbyqxmd.com/read/28629513/erythropoietin-and-hypothalamic-pituitary-axis
#15
Soumyadeep Dey, Constance T Noguchi
Erythropoietin (EPO), known primarily for its erythropoietic activity, is commonly used clinically to treat anemia of chronic kidney disease. However, the expression of EPO receptor (EpoR) beyond erythroid tissue provides for potential extrahematopoietic effects of EPO, including EPO regulation of metabolic homeostasis (Zhang et al., 2014). Small clinical studies have shown that EPO treatment in patients with end-stage renal disease improved glycemic control and insulin sensitivity. Studies in animal models have shown that EPO regulation of metabolism is mainly attributed to its response in fat, and the hypothalamus-pituitary axis (Dey et al...
2017: Vitamins and Hormones
https://www.readbyqxmd.com/read/28628125/enhanced-insulin-sensitivity-in-successful-long-term-weight-loss-maintainers-compared-with-matched-controls-with-no-weight-loss-history
#16
L D Clamp, D J Hume, E V Lambert, J Kroff
BACKGROUND: Weight gain is associated with deterioration in metabolic health, whereas weight loss improves insulin sensitivity. This study assesses the impact of long-term, successfully maintained weight loss and weight-loss relapse on measures of insulin sensitivity and identifies factors that explain variability in insulin sensitivity. METHODS: Women (20-45 years) were recruited into four groups: reduced-overweight/obese (RED, n=15); body mass index (BMI)-matched controls (stable low-weight, n=19), BMI⩽27 kg m(-2); relapsed-overweight/obese subjects (REL, n=11); and BMI-matched controls (obese stable weight, n=11), BMI⩾27 kg m(-2)...
June 19, 2017: Nutrition & Diabetes
https://www.readbyqxmd.com/read/28628064/exercise-training-reduces-intrathoracic-fat-regardless-of-defective-glucose-tolerance
#17
Sanna M Honkala, Kumail K Motiani, Jari-Joonas Eskelinen, Anna Savolainen, Virva Saunavaara, Kirsi A Virtanen, Eliisa Löyttyniemi, Jukka Kapanen, Juhani Knuuti, Kari K Kalliokoski, Jarna C Hannukainen
PURPOSE: Epicardial (EAT) and pericardial (PAT) fat masses and myocardial triglyceride content (MTC) are enlarged in obesity and insulin resistance. We studied whether the high-intensity interval training (HIIT) and moderate-intensity continuous training (MICT) similarly decrease ectopic fat in and around the heart and whether the decrease is similar in healthy subjects and subjects with defective glucose tolerance (DGT). METHODS: A total of 28 healthy men (body mass index = 20...
July 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28627440/microrna-21-regulates-hepatic-glucose-metabolism-by-targeting-foxo1
#18
Ailing Luo, Haibo Yan, Jichao Liang, Chunyuan Du, Xuemei Zhao, Lijuan Sun, Yong Chen
Abnormal activation of hepatic gluconeogenesis is a major contributor to fasting hyperglycemia in type 2 diabetes; however, the potential role of microRNAs in gluconeogenesis remains unclear. Here, we showed that hepatic expression levels of microRNA-21 (miR-21) were decreased in db/db and high-fat diet (HFD)-induced diabetic mice. Adenovirus-mediated overexpression of miR-21 decreased the expression of phosphoenolpyruvate carboxykinase (PEPCK) and glucose-6-phosphatase (G6Pase) and inhibited glucose production in primary mouse hepatocytes...
June 13, 2017: Gene
https://www.readbyqxmd.com/read/28627053/recovery-of-insulin-sensitivity-and-optimal-body-composition-after-rapid-weight-loss-in-obese-dogs-fed-a-high-protein-medium-carbohydrate-diet
#19
A André, I Leriche, G Chaix, C Thorin, M Burger, P Nguyen
This study investigated the effects of an experimental high-protein medium-carbohydrate diet (protein level, 46% metabolizable energy, ME). First, postprandial plasma glucose and insulin kinetics were determined in steady-state overweight/obese Beagle dogs (28%-41% excess body weight) for an experimental high-protein medium-carbohydrate diet (protein level, 46% ME) and a commercial high-carbohydrate medium-protein diet (protein level, 24%ME) in obese dogs. Secondly, all the dogs were included in a weight loss programme...
June 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28622115/ppar%C3%AE-2-c1431t-polymorphism-interacts-with-the-antiobesogenic-effects-of-kochujang-a-korean-fermented-soybean-based-red-pepper-paste-in-overweight-obese-subjects-a-12-week-double-blind-randomized-clinical-trial
#20
Yunkyoung Lee, Youn-Soo Cha, Yongsoon Park, Myoungsook Lee
Kochujang, a Korean fermented soybean-based red pepper paste, has been reported to have beneficial health effects. The aim of this study was to examine the antiobesity effects of Kochujang as a supplement in overweight/obese subjects according polymorphisms in the obesity-linked gene, peroxisome proliferator activator receptor γ (PPARγ2). Sixty overweight/obese subjects, who had body mass indexes (BMI, kg/m(2)) ≥23 or waist/hip ratios (WHR) ≥0.90 for males or ≥0.85 for females, were randomly assigned to either taking 32 g/day of placebo or Kochujang for 12 weeks...
June 2017: Journal of Medicinal Food
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