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https://www.readbyqxmd.com/read/28547180/role-of-antioxidant-treatment-on-dna-and-lipid-damage-in-the-brain-of-rats-subjected-to-a-chemically-induced-chronic-model-of-tyrosinemia-type-ii
#1
Emilio L Streck, Samira D T De Prá, Paula Ronsani Ferro, Milena Carvalho-Silva, Lara M Gomes, Jotele F Agostini, Adriani Damiani, Vanessa M Andrade, Patrícia F Schuck, Gustavo C Ferreira, Giselli Scaini
Tyrosine levels are abnormally elevated in tissues and body fluids of patients with inborn errors of tyrosine metabolism. Tyrosinemia type II, which is caused by tyrosine aminotransferase deficiency, provokes eyes, skin, and central nervous system disturbances in affected patients. However, the mechanisms of brain damage are still poorly known. Considering that studies have demonstrated that oxidative stress may contribute, along with other mechanisms, to the neurological dysfunction characteristic of hypertyrosinemia, in the present study we investigated the effects of antioxidant treatment (NAC and DFX) on DNA damage and oxidative stress markers induced by chronic administration of L-tyrosine in cerebral cortex, hippocampus, and striatum of rats...
May 25, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28546543/metabolic-profiling-of-polycystic-ovary-syndrome-reveals-interactions-with-abdominal-obesity
#2
Alexessander Couto Alves, Beatriz Valcarcel, Ville-Petteri Mäkinen, Laure Morin-Papunen, Sylvain Sebert, Antti J Kangas, Pasi Soininen, Shikta Das, Maria De Iorio, Lachlan Coin, Mika Ala-Korpela, Marjo-Riitta Järvelin, Stephen Franks
BACKGROUND: Polycystic ovary syndrome (PCOS) is a common reproductive disorder associated with metabolic disturbances including obesity, insulin resistance, and diabetes mellitus. Here we investigate whether changes in the metabolic profile of PCOS women are driven by increased tendency to obesity or are specific features of PCOS related to increased testosterone levels. DESIGN AND METHODS: We conducted an NMR metabolomics association study of PCOS cases (n=145) and controls (n=687) nested in a population-based birth cohort (n=3,127)...
May 26, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28544245/ghrelin-receptor-inverse-agonists-as-a-novel-therapeutic-approach-against-obesity-related-metabolic-disease
#3
Kathrin Abegg, Lara Bernasconi, Melanie Hutter, Lynda Whiting, Claudio Pietra, Claudio Giuliano, Thomas A Lutz, Thomas Riediger
AIMS: Ghrelin is implicated in the control of energy balance and glucose homeostasis. The ghrelin receptor exhibits ligand independent constitutive activity, which can be pharmacologically exploited to induce inverse ghrelin actions. Since ghrelin receptor inverse agonists (GHSR-IA) might be effective for the treatment of obesity-related metabolic disease, we tested two novel synthetic compounds GHSR-IA1 and GHSR-IA2. MATERIALS AND METHODS: In functional cell assays, electrophysiogical and immunohistochemical experiments, we demonstrated inverse agonist activity for GHSR-IA1 and GHSR-IA2...
May 24, 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/28544137/phenotypic-identification-of-a-novel-autophagy-inhibitor-chemotype-targeting-lipid-kinase-vps34
#4
Herbert Waldmann, Lucas Robke, Luca Laraia, Marjorie A Carnero Corrales, Georgios Konstantinidis, Makoto Muroi, André Richters, Michael Winzker, Tobias Engbring, Stefano Tomassi, Nobumoto Watanabe, Hiroyuki Osada, Daniel Rauh, Yaowen Wu, Julian Engel
Autophagy is a critical regulator of cellular homeostasis and metabolism. Interference with this process is considered a new approach for the treatment of disease, in particular cancer and neurological disorders. Therefore, novel small molecule autophagy modulators are in high demand. We describe the discovery of autophinib, a potent autophagy inhibitor with a novel chemotype. Autophinib was identified by means of a phenotypic assay monitoring formation of autophagy-induced puncta indicating accumulation of lipidated cytosolic protein LC3 on the autophagosomal membrane...
May 22, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28543022/sedentary-behaviour-is-a-key-determinant-of-metabolic-inflexibility
#5
Corey A Rynders, Stephane Blanc, Nathan DeJong, Daniel H Bessesen, Audrey Bergouignan
Metabolic flexibility is defined as the ability to adapt substrate oxidation rates in response to changes in fuel availability. The inability to switch between the oxidation of lipid and carbohydrate appears to be an important feature of chronic disorders such as obesity and type 2 diabetes. Laboratory assessment of metabolic flexibility has traditionally involved measurement of the respiratory quotient (RQ) by indirect calorimetry during the fasted to fed transition (e.g. mixed meal challenge) or during a hyperinsulinemic-euglycemic clamp...
May 24, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28542792/on-the-complexity-of-clinical-and-molecular-bases-of-neurodegeneration-with-brain-iron-accumulation
#6
REVIEW
Cristina Tello, Alejandra Darling, Vincenzo Lupo, Belén Pérez-Dueñas, Carmen Espinós
Neurodegeneration with brain iron accumulation (NBIA) are a group of inherited heterogeneous neurodegenerative rare disorders. These patients present with dystonia, spasticity, parkinsonism and neuropsychiatric disturbances, along with brain MRI evidence of iron accumulation. In sum, they are devastating disorders and to date, there is no specific treatment. Ten NBIA genes are accepted: PANK2, PLA2G6, C19orf12, COASY, FA2H, ATP13A2, WDR45, FTL, CP, and DCAF17, and. Nonetheless, a relevant percentage of patients remain without genetic diagnosis, suggesting that other novel NBIA genes remain to be discovered...
May 23, 2017: Clinical Genetics
https://www.readbyqxmd.com/read/28541730/results-of-a-metabolic-health-clinic-at-a-hostel-for-homeless-men
#7
Olav Nielssen, Alan Chudleigh, Mia Chen, Matthew Large, Tania Markovic, Lucy Cooper
OBJECTIVES: People who are homeless have high mortality and morbidity, including from metabolic disorder. The aim of this study was to report on the characteristics and progress of the metabolic health of people attending a metabolic clinic at a homeless men's shelter. METHODS: Homeless men attending the clinic were assessed by measuring their weight, height, body mass index (BMI), waist circumference, blood pressure, blood lipids, fasting blood glucose and, if indicated, HbA1c...
June 2017: Australasian Psychiatry: Bulletin of Royal Australian and New Zealand College of Psychiatrists
https://www.readbyqxmd.com/read/28540224/erectile-dysfunction-therapy-in-countries-where-implant-is-economically-not-feasible
#8
REVIEW
Adrián M Garza-Gangemi, Mariano Sotomayor-de Zavaleta
Erectile dysfunction (ED), a frequent complaint in the primary care setting, is strongly associated with obesity, cigarette smoking and other common cardiovascular risk factors like hypertension, diabetes mellitus (DM), lipid disorders and the metabolic syndrome. The prevalence of these cardiovascular disorders is rising at staggering rates in most Latin American countries. ED is a symptom that mainly affects economically productive men (40-70 years of age) potentially causing major psychosocial repercussions and reduced quality of life...
April 2017: Translational Andrology and Urology
https://www.readbyqxmd.com/read/28540084/body-composition-and-metabolic-syndrome-components-on-lipodystrophy-different-subtypes-associated-with-hiv
#9
Livia Bertazzo Sacilotto, Paulo Câmara Marques Pereira, João Paulo Vieira Manechini, Sílvia Justina Papini
HIV-associated lipodystrophy syndrome (HALS) is characterized by body fat redistribution as a consequence of the antiretroviral therapy (ART) introduction, associated with an increased risk of cardiovascular disease development. Subjective diagnosis, classified between three subtypes according to the body region on which fat is lost and/or accumulated, named lipoatrophy, lipohypertrophy, and mixed lipodystrophy, is possibly accompanied with metabolic alterations. Forty people living with HIV/AIDS (PLHA), with clinical diagnosis of HALS and from both genders, were assessed...
2017: Journal of Nutrition and Metabolism
https://www.readbyqxmd.com/read/28539742/neutralization-of-inflammation-by-inhibiting-in-vitro-and-in-vivo-secretory-phospholipase-a2-by-ethanol-extract-of-boerhaavia-diffusa-l
#10
Aladahalli S Giresha, Siddanakoppalu N Pramod, A D Sathisha, K K Dharmappa
BACKGROUND: Inflammation is a normal and necessary prerequisite to healing of the injured tissues. Inflammation contributes to all disease process including immunity, vascular pathology, trauma, sepsis, chemical, and metabolic injuries. The secretory phospholipase A2 (sPLA2) is a key enzyme in the production of pro-inflammatory mediators in chronic inflammatory disorders such as rheumatoid arthritis, coronary heart disease, diabetes, and asthma. The sPLA2 also contribute to neuroinflammatory disorders such as Parkinson's, Alzheimer's, and Crohn's disease...
April 2017: Pharmacognosy Research
https://www.readbyqxmd.com/read/28539716/prevention-mechanism-of-2-3-5-4-tetrahydroxy-stilbene-2-o-%C3%AE-d-glucoside-on-lipid-accumulation-in-steatosis-hepatic-l-02-cell
#11
Pei Lin, Jian-Mei Lu, Yan-Fang Wang, Wen Gu, Rong-Hua Zhao, Jie Yu
AIM: 2,3,5,4'-Tetrahydroxy-stilbene-2-O-β-d-glucoside (TSG), a natural stilbene, shows great activities in hepatic lipid regulation, especially for hepatic triglyceride lowering. However, information about its mechanisms on biosynthesis and degradation of triglyceride is still limited. This research pays close attention to clarify the mechanism of TSG on prevention of hepatic lipid accumulation. MATERIALS AND METHODS: TSG was given to steatosis hepatocyte L-02 cell induced by fat emulsion incubation...
April 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28536532/phase-partitioning-of-gm1-and-its-bodipy-labeled-analog-determine-their-different-binding-to-cholera-toxin
#12
Sami Rissanen, Michal Grzybek, Adam Orłowski, Tomasz Róg, Oana Cramariuc, Ilya Levental, Christian Eggeling, Erdinc Sezgin, Ilpo Vattulainen
Driven by interactions between lipids and proteins, biological membranes display lateral heterogeneity that manifests itself in a mosaic of liquid-ordered (Lo) or raft, and liquid-disordered (Ld) or non-raft domains with a wide range of different properties and compositions. In giant plasma membrane vesicles and giant unilamellar vesicles, specific binding of Cholera Toxin (CTxB) to GM1 glycolipids is a commonly used strategy to label raft domains or Lo membrane environments. However, these studies often use acyl-chain labeled bodipy-GM1 (bdGM1), whose headgroup accessibility and membrane order or phase partitioning may differ from those of GM1, rendering the interpretation of CTxB binding data quite problematic...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28535204/colocalization-of-receptors-for-shiga-toxins-with-lipid-rafts-in-primary-human-renal-glomerular-endothelial-cells-and-influence-of-d-pdmp-on-synthesis-and-distribution-of-glycosphingolipid-receptors
#13
Nadine Legros, Gottfried Pohlentz, Jana Runde, Stefanie Dusny, Hans-Ulrich Humpf, Helge Karch, Johannes Müthing
Damage of human renal glomerular endothelial cells (HRGECs) of the kidney represents the linchpin in the pathogenesis of the hemolytic uremic syndrome (HUS) caused by Shiga toxins (Stxs) of enterohemorrhagic Escherichia coli (EHEC). We performed a comprehensive structural analysis of the Stx receptor glycosphingolipids (GSLs) globotriaosylceramide (Gb3Cer, Galα4alβ4Glcβ1Cer) and globotetraosylceramide (Gb4Cer, GalNAcβ3Galα4Galβ4Glcβ1Cer) and their distribution in lipid raft analogue detergent-resistant membranes (DRMs) and nonDRMs prepared from primary HRGECs...
May 23, 2017: Glycobiology
https://www.readbyqxmd.com/read/28533927/antioxidant-and-anti-inflammatory-medicinal-plants-have-potential-role-in-the-treatment-of-cardiovascular-disease-a-review
#14
REVIEW
Peter Adegbola, Ifewumi Aderibigbe, Wasiu Hammed, Tolulope Omotayo
Cardiovascular disease is a compound name for clusters of disorders afflicting the heart and blood vessels; it is assuming an increasing role as a major cause of morbidity and mortality. Unhealthy practices such as smoking, high intake of saturated fat and cholesterol, diabetes and physical inactivity are predisposing factors. The risk factors cause alteration in vascular integrity, compromised membrane integrity, increase free radical generation and reduced endogenous antioxidant system resulting in oxidative stress...
2017: American Journal of Cardiovascular Disease
https://www.readbyqxmd.com/read/28532689/lipid-composition-of-microdomains-is-altered-in-neuronopathic-gaucher-disease-sheep-brain-and-spleen
#15
Leanne K Hein, Tina Rozaklis, Melissa K Adams, John J Hopwood, Litsa Karageorgos
Gaucher disease is a lysosomal storage disorder caused by a deficiency in glucocerebrosidase activity that leads to accumulation of glucosylceramide and glucosylsphingosine. Membrane raft microdomains are discrete, highly organized microdomains with a unique lipid composition that provide the necessary environment for specific protein-lipid and protein-protein interactions to take place. In this study we purified detergent resistant membranes (DRM; membrane rafts) from the occipital cortex and spleen from sheep affected with acute neuronopathic Gaucher disease and wild-type controls...
May 17, 2017: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/28532529/effect-of-childhood-nutrition-counselling-on-intelligence-in-adolescence-a-15-year-follow-up-of-a-cluster-randomised-trial
#16
Tiago N Munhoz, Iná S Santos, Simone de M Karam, Jose Martines, Gretel Pelto, Raquel Barcelos, Helen Gonçalves, Neiva Cj Valle, Luciana Anselmi, Alicia Matijasevich
OBJECTIVE: The present study aimed to assess the effects of an early childhood nutrition counselling intervention on intelligence (as measured by the intelligence quotient (IQ)) at age 15-16 years. DESIGN: A single-blind, cluster-randomised trial. SETTING: In 1998, in Southern Brazil, mothers of children aged 18 months or younger were enrolled in a nutrition counselling intervention (n 424). Counselling included encouragement and promotion of exclusive breast-feeding until 6 months of age and continued breast-feeding supplemented by protein-, lipid- and carbohydrate-rich foods after age 6 months up to age 2 years...
May 23, 2017: Public Health Nutrition
https://www.readbyqxmd.com/read/28532484/seasonal-variations-of-vitamin-d-and-its-relation-to-lipid-profile-in-iranian-children-and-adults
#17
Sakineh Nouri Saeidlou, Davoud Vahabzadeh, Fariba Babaei, Zakaria Vahabzadeh
BACKGROUND: Vitamin D has a multitude of functional properties and acts like a hormone in the body. Its effect on the lipid profile is one of the proposed mechanisms for its relationship with many disorders during its deficiency. But, this relationship is still conflicting and debatable, so this study was conducted to determine the association between serum level of vitamin D and lipid profiles, including serum concentrations of cholesterol, triglyceride (TG), HDL, and LDL in healthy subjects...
May 22, 2017: Journal of Health, Population, and Nutrition
https://www.readbyqxmd.com/read/28531236/psychosine-enhances-the-shedding-of-membrane-microvesicles-implications-in-demyelination-in-krabbe-s-disease
#18
Ludovic D'Auria, Cory Reiter, Emma Ward, Ana Lis Moyano, Michael S Marshall, Duc Nguyen, Giuseppe Scesa, Zane Hauck, Richard van Breemen, Maria I Givogri, Ernesto R Bongarzone
In prior studies, our laboratory showed that psychosine accumulates and disrupts lipid rafts in brain membranes of Krabbe's disease. A model of lipid raft disruption helped explaining psychosine's effects on several signaling pathways important for oligodendrocyte survival and differentiation but provided more limited insight in how this sphingolipid caused demyelination. Here, we have studied how this cationic inverted coned lipid affects the fluidity, stability and structure of myelin and plasma membranes...
2017: PloS One
https://www.readbyqxmd.com/read/28531113/retrospective-evaluation-of-metformin-and-or-metformin-plus-a-new-polysaccharide-complex-in-treating-severe-hyperinsulinism-and-insulin-resistance-in-obese-children-and-adolescents-with-metabolic-syndrome
#19
Stefano Stagi, Franco Ricci, Martina Bianconi, Maria Amina Sammarco, Giovanna Municchi, Sonia Toni, Lorenzo Lenzi, Alberto Verrotti, Maurizio de Martino
Background: Pharmacological treatment of obesity and glucose-insulin metabolism disorders in children may be more difficult than in adults. Thus, we evaluate the effects of metformin in comparison with metformin plus a polysaccharide complex (Policaptil Gel Retard(®), PGR) on body weight and metabolic parameters in obese children and adolescents with metabolic syndrome (MetS). Patients and methods: We retrospectively collected 129 children and adolescents (67 girls, 62 boys; median age 12.6 years) treated for a minimum of two years with metformin and low glycemic index (LGI) diet...
May 20, 2017: Nutrients
https://www.readbyqxmd.com/read/28530590/metabolic-profiling-of-apples-from-different-production-systems-before-and-after-controlled-atmosphere-ca-storage-studied-by-1-h-high-resolution-magic-angle-spinning-hr-mas-nmr
#20
Martina Vermathen, Mattia Marzorati, Gaëlle Diserens, Daniel Baumgartner, Claudia Good, Franz Gasser, Peter Vermathen
Determination of metabolic alterations in apples induced by such processes as different crop protection strategies or storage, are of interest to assess correlations with fruit quality or fruit disorders. Preliminary results proposed the metabolic discrimination of apples from organic (BIO), integrated (IP) and low-input (LI) production. To determine contributions of temporal metabolic developments and to define the type of metabolic changes during storage, (1)H high resolution-magic angle spinning (HR-MAS) NMR spectroscopy of apple pulp was performed before and after two time points of controlled atmosphere storage...
October 15, 2017: Food Chemistry
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