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https://www.readbyqxmd.com/read/29787037/effects-of-perinatal-exposure-to-dibutyltin-chloride-on-fat-and-glucose-metabolism-in-mice-and-molecular-mechanisms-in-vitro
#1
Raquel Chamorro-García, Bassem M Shoucri, Sigal Willner, Heidi Käch, Amanda Janesick, Bruce Blumberg
BACKGROUND: The organotin dibutyltin (DBT) is used in the manufacture of polyvinyl chloride (PVC) plastics, in construction materials, and in medical devices. Previous animal studies showed detrimental effects of DBT during in utero development at relatively high doses, but little was known about the effects of DBT exposure at environmentally relevant doses on endpoints such as obesity and metabolic disease. OBJECTIVES: We tested the potential obesogenic effects of DBT using in vitro and in vivo models...
May 2018: Environmental Health Perspectives
https://www.readbyqxmd.com/read/29785076/role-of-osteoprotegerin-receptor-activator-of-nuclear-factor-kappa-b-receptor-activator-of-nuclear-factor-kappa-b-ligand-axis-in-nonalcoholic-fatty-liver-disease
#2
REVIEW
Lucia Pacifico, Gian Marco Andreoli, Miriam D'Avanzo, Delia De Mitri, Pasquale Pierimarchi
Concomitantly with the increase in the prevalences of overweight/obesity, nonalcoholic fatty liver disease (NAFLD) has worldwide become the main cause of chronic liver disease in both adults and children. Patients with fatty liver display features of metabolic syndrome (MetS), like insulin resistance (IR), glucose intolerance, hypertension and dyslipidemia. Recently, epidemiological studies have linked obesity, MetS, and NAFLD to decreased bone mineral density and osteoporosis, highlighting an intricate interplay among bone, adipose tissue, and liver...
May 21, 2018: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29781079/the-role-of-new-adipokines-in-gestational-diabetes-mellitus-pathogenesis
#3
Radzisław Mierzyński, Elżbieta Poniedziałek-Czajkowska, Dominik Dłuski, Bożena Leszczyńska-Gorzelak
Gestational diabetes mellitus (GDM) is defined as any degree of glucose intolerance with onset or first recognition dur-ing pregnancy. Explanation of the GDM pathogenesis is important due to preventing gestational complications. During pregnancy there are significant changes in maternal metabolism. Many of these changes are influenced by different adi-pokines produced in the placenta and adipose tissue. The exact role of adipokines in the pathogenesis of GDM remains still unknown. Several adipokines have been analysed throughout gestation and their levels have been suggested as biomarkers of maternal-perinatal outcomes...
2018: Ginekologia Polska
https://www.readbyqxmd.com/read/29770148/clinical-characteristics-of-aldosterone-and-cortisol-coproducing-adrenal-adenoma-in-primary-aldosteronism
#4
Lu Tang, Xintao Li, Baojun Wang, Xin Ma, Hongzhao Li, Yu Gao, Liangyou Gu, Wenyuan Nie, Xu Zhang
Aldosterone- and cortisol-coproducing adrenal adenoma (A/CPA) cases have been observed in patients with primary aldosteronism (PA). This study investigated the incidence, clinical characteristics, and molecular biological features of patients with A/CPAs. We retrospectively identified 22 A/CPA patients from 555 PA patients who visited the Chinese People's Liberation Army General Hospital between 2004 and 2015. Analysis of clinical parameters revealed that patients with A/CPAs had larger tumors than those with pure APAs ( P < 0...
2018: International Journal of Endocrinology
https://www.readbyqxmd.com/read/29769570/in-utero-and-postnatal-exposure-to-high-fat-high-sucrose-diet-suppressed-testis-apoptosis-and-reduced-sperm-count
#5
Jiude Mao, Kathleen A Pennington, Omonseigho O Talton, Laura C Schulz, Miriam Sutovsky, Yan Lin, Peter Sutovsky
Obesity affects male fertility and maternal diabetes affects the offspring sperm epigenome. However, the effects of in utero exposure to maternal glucose intolerance in combination with postnatal high fat, high sucrose (HFHS) diet consumption on offspring spermatogenesis is not clear. The present study was designed to test these effects. One week before and during pregnancy, dams were fed either control or HFHS diet to induce gestational glucose intolerance, and returned to standard diet during lactation. Male offspring from each maternal group were split into control and HFHS-fed groups for eight weeks prior to sacrifice at 11, 19 or 31 weeks of age, and reproductive tissues were harvested for analysis of testicular germ cell apoptosis and sperm output...
May 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29768504/sarcopoterium-spinosum-extract-improved-insulin-sensitivity-in-mice-models-of-glucose-intolerance-and-diabetes
#6
Konstantin Rozenberg, Tovit Rosenzweig
BACKGROUND: The glucose lowering properties of Sarcopoterium spinosum, a traditional medicinal plant, were previously validated by us using KK-Ay mice as a genetic model for type 2 diabetes (T2D). OBJECTIVE: To clarify the effects of Sarcopoterium spinosum extract (SSE) on diet-induced glucose intolerance and to investigate SSE effects on carbohydrate and lipid metabolism in target tissues of both high-fat-diet (HFD)-fed and KK-Ay mice. RESULTS: Mice were given SSE (70 mg/day) for 6 weeks...
2018: PloS One
https://www.readbyqxmd.com/read/29764860/membrane-initiated-estrogen-receptor-signaling-mediates-metabolic-homeostasis-via-central-activation-of-protein-phosphatase-2a
#7
Kazutaka Ueda, Eiki Takimoto, Qing Lu, Pangyen Liu, Nobuaki Fukuma, Yusuke Adachi, Ryo Suzuki, Shengpu Chou, Wendy Baur, Mark J Aronovitz, Andrew S Greenberg, Issei Komuro, Richard H Karas
Women gain weight and their diabetes risk increases as they transition through menopause; these changes can in part be reversed by hormone therapy. However, the underlying molecular mechanisms mediating these effects are unknown. A novel knock-in mouse line with the selective blockade of the membrane-initiated estrogen receptor (ER) pathway was employed, and we found that the lack of this pathway precipitated excessive weight gain and glucose intolerance independent of food intake, and that this was accompanied by impaired adaptive thermogenesis and reduced physical activity...
May 15, 2018: Diabetes
https://www.readbyqxmd.com/read/29763267/top-20-research-studies-of-2017-for-primary-care-physicians
#8
Mark H Ebell, Roland Grad
Based on systematic surveillance of more than 110 medical journals, 247 studies met criteria as POEMs (patient-oriented evidence that matters) in 2017. Members of the Canadian Medical Association identified 20 of these POEMs as most relevant to practice. This article reviews the clinical questions and bottom-line answers from these studies. Blood pressure should be measured after a period of rest, using a bare arm, and orthostatic blood pressure is more predictive when measured after one minute of standing rather than three minutes...
May 1, 2018: American Family Physician
https://www.readbyqxmd.com/read/29759973/enhanced-glucose-control-following-vertical-sleeve-gastrectomy-does-not-require-a-%C3%AE-cell-glucagon-like-peptide-1-receptor
#9
Jonathan D Douros, Alfor G Lewis, Eric P Smith, JingJing Niu, Megan Capozzi, April Wittmann, Jonathan Campbell, Jenny Tong, Constance Wagner, Parinaz Mahbod, Randy Seeley, David A D'Alessio
Bariatric surgeries, including vertical sleeve gastrectomy (VSG), resolve diabetes in 40-50% of patients. Studies examining the molecular mechanisms underlying this effect have centered on the role of the insulinotropic glucagon-like peptide 1 (GLP-1), in great part because of the ∼10-fold rise in its circulating levels after surgery. However, there is currently debate over the role of direct β-cell signaling by GLP-1 to mediate improved glucose tolerance following surgery. In order to assess the importance of β-cell GLP-1 receptor (GLP-1R) for improving glucose control after VSG, a mouse model of this procedure was developed and combined with a genetically modified mouse line allowing an inducible, β-cell specific Glp1r knockdown ( Glp1r β-cell-ko )...
May 14, 2018: Diabetes
https://www.readbyqxmd.com/read/29754168/acromegaly-is-associated-with-high-fibroblast-growth-factor-21-levels
#10
B S Yurekli, N O Kutbay, M Aksit, A Suner, I Y Simsir, S Seckiner, G U Kocabas, G Bozkaya, F Saygili
PURPOSE: Fibroblast growth factor-21 (FGF-21) is a member of fibroblast growth factor family. Both growth hormone (GH) and FGF-21 take place in the regulation of glucose and lipid metabolism. We aimed to investigate FGF-21 levels in acromegaly which is characterized by excess GH levels and is associated with comorbidities and altered body composition. METHODS: We studied 43 subjects (21 females and 22 males, mean age of 50.0 ± 12.8) with acromegaly. The control group consisted of 40 gender- and age-matched subjects (25 females and 15 males, mean age of 48...
May 12, 2018: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/29746487/loss-of-malat1-does-not-modify-age-or-diet-induced-adipose-tissue-accretion-and-insulin-resistance-in-mice
#11
Sophie Carter, Stéphanie Miard, Louise Boivin, Sandrine Sallé-Lefort, Frédéric Picard
Several studies have suggested that signals emerging from white adipose tissue can contribute to the control of longevity. In turn, aging is associated with perturbed regulation and partitioning of fat depots and insulin resistance. However, the exact mechanisms involved in these relationships remain undetermined. Using RAP-PCR on adipose tissue of young and old male mice coupled with qPCR validation, we have uncovered the long non-coding RNA Malat1 as a gene robustly downregulated in visceral white adipose tissue (vWAT) during normal aging in male mice and men...
2018: PloS One
https://www.readbyqxmd.com/read/29743495/chronic-stress-of-high-dietary-carbohydrate-level-causes-inflammation-and-influences-glucose-transport-through-socs3-in-japanese-flounder-paralichthys-olivaceus
#12
Kangyu Deng, Mingzhu Pan, Jiahuan Liu, Mengxi Yang, Zhixiang Gu, Yue Zhang, Guangxia Liu, Dong Liu, Wenbing Zhang, Kangsen Mai
Carnivorous fish is thought to be high-glucose intolerance. But the reasons were still unclear. The aim of the present study is to investigate the effects of high level of dietary carbohydrate on the survival, growth and immune responses of Paralichthys olivaceus, and the underlying molecular mechanism related to the immune and glucose metabolism. P. olivaceus were fed with 8%, 16% and 24% of dietary carbohydrate for 10 weeks, respectively. After that, a glucose tolerance test (GTT) was conducted. Results showed that excessive (24%) dietary carbohydrate significantly decreased the growth and glucose tolerance ability according to the GTT...
May 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29735266/neuraminidase-1-activates-insulin-receptor-and-reverses-insulin-resistance-in-obese-mice
#13
Anne Fougerat, Xuefang Pan, Victoria Smutova, Nikolaus Heveker, Christopher W Cairo, Tarik Issad, Bruno Larrivée, Jeffrey A Medin, Alexey V Pshezhetsky
OBJECTIVES: Neuraminidase 1 (NEU1) cleaves terminal sialic acids of glycoconjugates during lysosomal catabolism. It also modulates the structure and activity of cellular surface receptors affecting diverse pathways. Previously we demonstrated that NEU1 activates the insulin receptor (IR) and that NEU1-deficient CathAS190A-Neo mice (hypomorph of the NEU1 activator protein, cathepsin A/CathA) on a high-fat diet (HFD) develop hyperglycaemia and insulin resistance faster than wild-type animals...
April 21, 2018: Molecular Metabolism
https://www.readbyqxmd.com/read/29732984/knockout-of-trpv1-exacerbates-left-ventricular-diastolic-dysfunction-induced-by-a-high-fat-diet-in-mice
#14
Beihua Zhong, Jack Rubinstein, Shuangtao Ma, Donna H Wang
BACKGROUND: Transient receptor potential vanilloid 1 (TRPV1) channels in sensory nerves have anti-oxidative properties and counteract obesity and diabetes that are associated with diastolic dysfunction with preserved ejection fraction. We tested the hypothesis that TRPV1 knockout exacerbates high-fat diet (HFD)-induced glucose intolerance and diastolic dysfunction. METHOD: Trpv1-/- and wild-type (WT) mice were fed chow diet or HFD for 20 weeks. Then, we performed the intraperitoneal glucose tolerance test, measured the heart function through transthoracic echocardiography and Langendorff heart perfusion system, analyzed cardiac histology, and measured the myocardial superoxide production and the expression of nicotinamide adenine dinucleotide phosphate (NADPH) oxidases...
May 3, 2018: Cardiovascular & Hematological Disorders Drug Targets
https://www.readbyqxmd.com/read/29731256/antiretroviral-therapy-potentiates-high-fat-diet-induced-obesity-and-glucose-intolerance
#15
Mark E Pepin, Lindsey E Padgett, Ruth E McDowell, Ashley R Burg, Manoja K Brahma, Cassie Holleman, Teayoun Kim, David Crossman, Olaf Kutsch, Hubert M Tse, Adam R Wende, Kirk M Habegger
OBJECTIVE: Breakthroughs in HIV treatment, especially combination antiretroviral therapy (ART), have massively reduced AIDS-associated mortality. However, ART administration amplifies the risk of non-AIDS defining illnesses including obesity, diabetes, and cardiovascular disease, collectively known as metabolic syndrome. Initial reports suggest that ART-associated risk of metabolic syndrome correlates with socioeconomic status, a multifaceted finding that encompasses income, race, education, and diet...
April 20, 2018: Molecular Metabolism
https://www.readbyqxmd.com/read/29731064/association-of-the-pck2-gene-polymorphism-with-new-onset-glucose-intolerance-in-japanese-kidney-transplant-recipients
#16
N Yokoyama, T Ishimura, T Oda, S Ogawa, K Yamamoto, M Fujisawa
BACKGROUND: New-onset diabetes mellitus after transplantation (NODAT) is a risk factor for both cardiovascular disease and poor graft survival after kidney transplantation (KTx). In this study, we identified single-nucleotide polymorphisms (SNPs) in genes involved in glucose metabolism and examined the correlation between these SNPs and glucose intolerance after KTx. METHODS: Thirty-eight patients with normal glucose tolerance before KTx were included in this study...
May 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29730509/protein-restriction-diet-during-the-suckling-phase-programs-rat-metabolism-against-obesity-and-insulin-resistance-exacerbation-induced-by-a-high-fat-diet-in-adulthood
#17
Isabela Peixoto Martins, Júlio Cezar de Oliveira, Audrei Pavanello, Camila Cristina Ianoni Matiusso, Carina Previate, Laize Peron Tófolo, Tatiane Aparecida Ribeiro, Claudinéia Conationi da Silva Franco, Rosiane Aparecida Miranda, Kelly Valério Prates, Vander Silva Alves, Flávio Andrade Francisco, Ana Maria Praxedes de Moraes, Paulo Cezar de Freitas Mathias, Ananda Malta
Protein restriction during the suckling phase can malprogram rat offspring to a lean phenotype associated with metabolic dysfunctions later in life. We tested whether protein-caloric restriction during lactation can exacerbate the effect of a high-fat (HF) diet at adulthood. To test this hypothesis, we fed lactating Wistar dams with a low-protein (LP; 4% protein) diet during the first 2 weeks of lactation or a normal-protein (NP; 23% protein) diet throughout lactation. Rat offspring from NP and LP mothers received a normal-protein diet until 60 days old...
April 3, 2018: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29727734/millettia-macrophylla-fabaceae-phenolic-fraction-prevents-differentiation-of-3t3-l1-adipocytes-and-the-increased-risks-of-cardiovascular-diseases-in-ovariectomized-rats
#18
Stéphane Zingue, Ícaro Andrade Rodrigues do Carmo, Job Tchoumtchoua, Edwige Nana Tchoupang, Letícia de Oliveira Souza Bratti, Tamara Dal Mora, Maria Halabalaki, Dieudonné Njamen, Tânia Beatriz Creczynski-Pasa, Fabíola Branco Filippin-Monteiro
ETHNOPHARMACOLOGICAL RELEVANCE: A prolonged estrogen deficiency alters lipid metabolism and increases risks of cardiovascular diseases. Phytoestrogens, naturally occurring compounds with estrogenic properties are reported to have cardiovascular protective effects. Millettia macrophylla used in the Cameroonian traditional system to treat physiological disorders related to menopause, was previously reported to have estrogenic effects. AIM: We, therefore, proposed evaluating the in vitro and in vivo effects of M...
May 1, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29726700/acute-exercise-induced-bdnf-trkb-signaling-is-intact-in-the-prefrontal-cortex-of-obese-glucose-intolerant-male-mice
#19
Bradley J Baranowski, Rebecca E K MacPherson
Obesity and glucose intolerance have been directly implicated in the pathology of Alzheimer's disease. It is thought that diet induced obesity causes a reduction in neuronal plasticity through a reduction in the neurotrophin, brain-derived neurotrophic factor (BDNF). Previous work has demonstrated that acute exercise in healthy lean animals increases BDNF-TrkB signaling in the brain. However, if this effect is intact in a state of obesity remains unknown. The purpose of this study is to determine the effects of a single bout of exercise on BDNF-TrkB signaling in the prefrontal cortex and hippocampus from obese glucose intolerant mice...
May 4, 2018: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/29723205/dietary-yeast-derived-mannan-oligosaccharides-have-immune-modulatory-properties-but-do-not-improve-high-fat-diet-induced-obesity-and-glucose-intolerance
#20
Lisa R Hoving, Hendrik J P van der Zande, Amanda Pronk, Bruno Guigas, Ko Willems van Dijk, Vanessa van Harmelen
The indigestible mannan oligosaccharides (MOS) derived from the outer cell wall of yeast Saccharomyces cerevisiae have shown potential to reduce inflammation. Since inflammation is one of the underlying mechanisms involved in the development of obesity-associated metabolic dysfunctions, we aimed to determine the effect of dietary supplementation with MOS on inflammation and metabolic homeostasis in lean and diet-induced obese mice. Male C57BL/6 mice were fed either a low fat diet (LFD) or a high fat diet (HFD) with, respectively, 10% or 45% energy derived from lard fat, with or without 1% MOS for 17 weeks...
2018: PloS One
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