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https://www.readbyqxmd.com/read/28344760/severe-pulmonary-hypertension-in-aging-female-apolipoprotein-e-deficient-mice-is-rescued-by-estrogen-replacement-therapy
#1
Soban Umar, Rod Partow-Navid, Gregoire Ruffenach, Andrea Iorga, Shayan Moazeni, Mansoureh Eghbali
BACKGROUND: Apolipoprotein E (ApoE) is a multifunctional protein, and its deficiency leads to the development of atherosclerosis in mice. Patients with pulmonary hypertension (PH) have reduced expression of ApoE in lung tissue. ApoE is known to inhibit endothelial and smooth muscle cell proliferation and has anti-inflammatory and anti-platelet aggregation properties. Young ApoE-deficient mice have been shown to develop PH on high fat diet. The combined role of female sex and aging in the development of PH has not been investigated before...
2017: Biology of Sex Differences
https://www.readbyqxmd.com/read/28342765/hippocampal-insulin-resistance-and-altered-food-decision-making-as-players-on-obesity-risk
#2
REVIEW
Amanda Brondani Mucellini, Natasha Kim de Oliveira da Fonseca, Gisele Gus Manfro, Patrícia Pelufo Silveira
There are increasing evidences that hippocampus can modulate the decision of what, when and how much to eat, in addition to its already recognized role in learning and memory processes. Insulin also has been linked to brain functions such as feeding behavior and the imbalance of its mechanism of action on hippocampus is being related to cognitive dysfunction. The discussion here is whether changes in insulin action could contribute to intake dysregulation and obesogenic behavior as a primary consequence of impairing hippocampal functioning, aside from the role of this hormone on obesity development through peripheral metabolic pathways...
March 22, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28325852/extended-multiplexing-of-tmt-labeling-reveals-age-and-high-fat-diet-specific-proteome-changes-in-mouse-epididymal-adipose-tissue
#3
Deanna L Plubell, Phillip A Wilmarth, Yuqi Zhao, Alexandra M Fenton, Jessica Minnier, Ashok P Reddy, John Klimek, Xia Yang, Larry L David, Nathalie Pamir
The lack of high-throughput methods to analyze the adipose tissue protein composition limits our understanding of the protein networks responsible for age and diet related metabolic response. We have developed an approach using multiple-dimension liquid chromatography tandem mass spectrometry and extended multiplexing (24 biological samples) with TMT labeling to analyze proteomes of epididymal adipose tissues isolated from mice fed either low or high fat diet for a short or a long-term, and from mice that aged on low vs...
March 21, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/28325733/overactivation-of-the-endocannabinoid-system-alters-the-anti-lipolytic-action-of-insulin-in-mouse-adipose-tissue
#4
Tania Muller, Laurent Demizieux, Stéphanie Troy-Fioramonti, Joseph Gresti, Jean-Paul Pais de Barros, Hélène Berger, Bruno Vergès, Pascal Degrace
Evidence has accumulated that obesity-related metabolic dysregulation is associated with overactivation of the endocannabinoid system (ECS), which involves cannabinoid receptor 1 (CB1R), in peripheral tissues, including adipose tissue (AT). The functional consequences of CB1R activation on AT metabolism remain unclear. Since excess fat mobilization is considered an important primary event contributing to the onset of insulin resistance, we combined in vivo and in vitro experiments to investigate whether activation of ECS could alter the lipolytic rate...
March 21, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28322093/peripheral-invariant-natural-killer-t-cell-deficiency-in-metabolically-unhealthy-but-normal-weight-versus-metabolically-healthy-but-obese-individuals
#5
Xiao-Li Wang, Xiang-Yun Chang, Xiao-Xiao Tang, Zhi-Gang Chen, Ting Zhou, Kan Sun
Objective To investigate the proportion of circulating invariant natural killer T (iNKT) cells in four body health types. Methods In this cross-sectional study, participants were classified into four body health types according to the body mass index and metabolic status: metabolically healthy and normal weight (MHNW), metabolically unhealthy but normal weight (MUNW), metabolically healthy but obese (MHO), or metabolically unhealthy and obese (MUO). Demographic and clinical characteristics were measured, and the homeostasis model assessment of insulin resistance (HOMA-IR) and visceral adiposity index (VAI) were calculated...
December 2016: Journal of International Medical Research
https://www.readbyqxmd.com/read/28321032/the-effects-of-prenatal-undernutrition-and-a-high-fat-postnatal-diet-on-central-and-peripheral-orexigenic-and-anorexigenic-factors-in-female-rats
#6
Takeshi Iwasa, Toshiya Matsuzaki, Kiyohito Yano, Altankhuu Tungalagsuvd, Munkhsaikhan Munkhzaya, Yiliyasi Mayila, Akira Kuwahara, Minoru Irahara
Prenatal undernutrition and postnatal overnutrition increase the risk of some peripheral and central metabolic disorders in adulthood. We speculated that disturbances of appetite/metabolic regulatory factors might already have been established in the early stages of life and contribute to obesity later in life. The effects of a high-fat diet on the levels of peripheral and central appetite/metabolic regulatory factors were compared between the offspring of normally nourished dams and those of undernourished dams in the peri-pubertal period...
March 17, 2017: Endocrine Journal
https://www.readbyqxmd.com/read/28317485/defective-insulin-signalling-mediated-by-inflammation-connects-obesity-to-alzheimer-disease-relevant-pharmacological-therapies-and-preventive-dietary-interventions
#7
Arantxa Rodriguez-Casado, Adolfo Toledano-Díaz, Adolfo Toledano
Recent evidence suggests that obesity, besides being a risk factor for cardiovascular events, also increases the risk of Alzheimer's disease. Insulin resistance is common in all cases of obesity and appears to be the linkage between both diseases. Obesity, often associated with excessive fat and sugar intake, represents a preclinical stage toward insulin resistance during which nutrition intervention is likely to have maximum effect. In this way, healthy lifestyles lifetime to prevent obesity-related modifiable risk factors such as inflammation, oxidative stress and metabolic disorders could be simultaneously beneficial for preserving cognition and controlling the Alzheimer's...
March 16, 2017: Current Alzheimer Research
https://www.readbyqxmd.com/read/28316139/changes-in-body-composition-and-metabolic-profile-during-interleukin-6-inhibition-in-rheumatoid-arthritis
#8
Anne Tournadre, Bruno Pereira, Fréderic Dutheil, Charlotte Giraud, Daniel Courteix, Vincent Sapin, Thomas Frayssac, Sylvain Mathieu, Sandrine Malochet-Guinamand, Martin Soubrier
BACKGROUND: Rheumatoid arthritis (RA) is a chronic inflammatory disease characterized by increased mortality associated with cardiometabolic disorders including dyslipidaemia, insulin resistance, and cachectic obesity. Tumour necrosis factor inhibitors and interleukin 6 receptor blocker licensed for the treatment of RA decrease inflammation and could thus improve cardiovascular risk, but their effects on body composition and metabolic profile need to be clarified. We investigated the effects of tocilizumab (TCZ), a humanized anti-interleukin 6 receptor antibody, on body composition and metabolic profile in patients treated for RA...
March 18, 2017: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/28314100/attenuated-mtor-signaling-and-enhanced-glucose-homeostasis-by-dietary-supplementation-with-lotus-seedpod-oligomeric-procyanidins-in-streptozotocin-stz-induced-diabetic-mice
#9
Xiaopeng Li, Yong Sui, Qian Wu, Bijun Xie, Zhida Sun
This study investigated the protective role of lotus seedpod oligomeric procyanidins (LSOPC) and synbiotics (Bifidobacterium Bb-12 and xylo-oligosaccharide) against high fat and streptozotocin (STZ)-induced diabetes. Administration of LSOPC or synbiotics have no effect on blood glucose in normal mice. Treatments with LSOPC for 12 weeks markedly reduced blood glucose, FFA, endotoxin, GHbA1c and improved glucose homeostasis, lipid metabolism and insulin level. In addition, administration of LSOPC significantly reversed the increase of mTOR and p66Shc in liver, skeletal muscle and white adipose tissue (WAT)...
March 17, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28304287/triceps-and-subscapular-skinfold-in-men-aged-40-65-and-dementia-prevalence-36-years-later
#10
Ramit Ravona-Springer, Michal Schnaider-Beeri, Uri Goldbourt
BACKGROUND: The relationship of obesity with risk for dementia is complex and may change with age. OBJECTIVE: To analyze the relationship between measures of obesity at age 40-65 and dementia prevalence in survivors 36 years later. METHODS: Obesity-related measures of triceps and subscapular skinfold thickness were assessed in 1963 in n = 9,760 men aged 40-65 participating in the Israel Ischemic Heart Disease study. Cognitive evaluation and assessment of dementia prevalence were performed in n = 1,643 participants of the original cohort who survived until 1999/2000 (age ≥76 years) and had anthropometric measures in 1963...
March 18, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28294174/docosahexaenoic-acid-enrichment-in-nafld-is-associated-with-improvements-in-hepatic-metabolism-and-hepatic-insulin-sensitivity-a-pilot-study
#11
L Hodson, L Bhatia, E Scorletti, D E Smith, N C Jackson, F Shojaee-Moradie, M Umpleby, P C Calder, C D Byrne
BACKGROUND/OBJECTIVE: Treatment of subjects with non-alcoholic fatty liver disease (NAFLD) with omega-3 polyunsaturated fatty acids (FAs) suggests high levels of docosahexaenoic acid (DHA) tissue enrichment decrease liver fat content. We assessed whether changes in erythrocyte DHA enrichment (as a surrogate marker of changes in tissue enrichment) were associated with alterations in hepatic de novo lipogenesis (DNL), postprandial FA partitioning and hepatic and peripheral insulin sensitivity in a sub-study of the WELCOME trial (Wessex Evaluation of fatty Liver and Cardiovascular markers in NAFLD (non-alcoholic fatty liver disease) with OMacor thErapy)...
March 15, 2017: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28276721/relationship-between-different-subpopulations-of-circulating-cd4-t-lymphocytes-and-microvascular-or-systemic-oxidative-stress-in-humans
#12
Carolina De Ciuceis, Claudia Agabiti-Rosei, Claudia Rossini, Paolo Airò, Mirko Scarsi, Angela Tincani, Guido Alberto Massimo Tiberio, Silvia Piantoni, Enzo Porteri, Leonardo Solaini, Sarah Duse, Francesco Semeraro, Beatrice Petroboni, Luigi Mori, Maurizio Castellano, Alice Gavazzi, Enrico Agabiti-Rosei, Damiano Rizzoni
BACKGROUND AND OBJECTIVE: Different components of the immune system, including innate and adaptive immunity (T effector lymphocytes and T regulatory lymphocytes - TREGs) may be involved in the development of hypertension, vascular injury and inflammation. However, no data are presently available in humans about possible relationships between T-lymphocyte subtypes and microvascular oxidative stress. Our objective was to investigate possible relationships between T-lymphocyte subtypes and systemic and microvascular oxidative stress in a population of normotensive subjects and hypertensive patients...
February 15, 2017: Blood Pressure
https://www.readbyqxmd.com/read/28272510/apolipoprotein-e4-and-insulin-resistance-interact-to-impair-cognition-and-alter-the-epigenome-and-metabolome
#13
Lance A Johnson, Eileen Ruth S Torres, Soren Impey, Jan F Stevens, Jacob Raber
Apolipoprotein E4 (E4) and type 2 diabetes are major risk factors for cognitive decline and late onset Alzheimer's disease (AD). E4-associated phenotypes and insulin resistance (IR) share several features and appear to interact in driving cognitive dysfunction. However, shared mechanisms that could explain their overlapping pathophysiology have yet to be found. We hypothesized that, compared to E3 mice, E4 mice would be more susceptible to the harmful cognitive effects of high fat diet (HFD)-induced IR due to apoE isoform-specific differences in brain metabolism...
March 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28265178/adam19-a-novel-target-for-metabolic-syndrome-in-humans-and-mice
#14
Lakshini Weerasekera, Caroline Rudnicka, Qing-Xiang Sang, Joanne E Curran, Matthew P Johnson, Eric K Moses, Harald H H Göring, John Blangero, Jana Hricova, Markus Schlaich, Vance B Matthews
Obesity is one of the most prevalent metabolic diseases in the Western world and correlates directly with insulin resistance, which may ultimately culminate in type 2 diabetes (T2D). We sought to ascertain whether the human metalloproteinase A Disintegrin and Metalloproteinase 19 (ADAM19) correlates with parameters of the metabolic syndrome in humans and mice. To determine the potential novel role of ADAM19 in the metabolic syndrome, we first conducted microarray studies on peripheral blood mononuclear cells from a well-characterised human cohort...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28263818/glucocorticoids-induced-high-fat-diet-preference-via-activating-hypothalamic-ampk-signaling-in-chicks
#15
Lei Liu, Xiaojuan Wang, Hongchao Jiao, Hai Lin
Glucocorticoids (GCs) stimulate appetite, contributing to enhanced fat deposition. Our present study was conducted to determine whether GCs could evoke an appetite specifically for fat-rich diets in chicks. Chicks were subjected to a subcutaneous injection of corticosterone (CORT, 2 mg/kg body weight/day) or corn oil (control), and food preference was tested. The results showed that CORT-chicks consumed more high-fat diet (HFD) compared with controls. In HFD-fed chicks, hypothalamic phosphorylated AMP-activated protein kinase α (AMPKα) and neuropeptide Y (NPY) mRNA levels were increased by CORT treatment...
March 2, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28262782/amyloid-precursor-protein-modulates-macrophage-phenotype-and-diet-dependent-weight-gain
#16
Kendra L Puig, Stephen A Brose, Xudong Zhou, Mary A Sens, Gerald F Combs, Michael D Jensen, Mikhail Y Golovko, Colin K Combs
It is well known that mutations in the gene coding for amyloid precursor protein are responsible for autosomal dominant forms of Alzheimer's disease. Proteolytic processing of the protein leads to a number of metabolites including the amyloid beta peptide. Although brain amyloid precursor protein expression and amyloid beta production are associated with the pathophysiology of Alzheimer's disease, it is clear that amyloid precursor protein is expressed in numerous cell types and tissues. Here we demonstrate that amyloid precursor protein is involved in regulating the phenotype of both adipocytes and peripheral macrophages and is required for high fat diet-dependent weight gain in mice...
March 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28261926/acute-caloric-restriction-counteracts-hepatic-bile-acid-and-cholesterol-deficiency-in-morbid-obesity
#17
S Straniero, F Rosqvist, D Edholm, H Ahlström, J Kullberg, M Sundbom, U Risérus, M Rudling
BACKGROUND: Bile acid (BA) synthesis is regulated by BA signalling in the liver and by fibroblast growth factor 19 (FGF19), synthesized and released from the intestine. In morbid obesity, faecal excretion and hepatic synthesis of BAs and cholesterol are strongly induced and caloric restriction reduces their faecal excretion considerably. We hypothesized that the high intestinal food mass in morbidly obese subjects promotes faecal excretion of BAs and cholesterol, thereby creating a shortage of both BAs and cholesterol in the liver...
March 6, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/28260479/peripheral-muscle-strength-indicates-respiratory-function-testing-in-renal-recipients
#18
Gaye Ulubay, Saliha Uyanik, Balam Er Dedekarginoglu, Irem Serifoglu, Elif Kupeli, Serife Savas Bozbas, Siren Sezer, Mehmet Haberal
OBJECTIVES: Muscle wasting occurs in renal recipients due to decreased physical performance, and decreased respiratory muscle strength may occur due to changes in structure and function. Data are scarce regarding the roles of sarcopenia and nutritional status on respiratory muscle function in these patients. Here, we evaluated interactions among peripheral muscle strength, sarcopenia, nutritional parameters, and respiratory muscle function in renal transplant recipients. MATERIALS AND METHODS: Ninety-nine patients were prospectively enrolled between September and April 2016 at Baskent University...
February 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28259568/chloroquine-improves-the-response-to-ischemic-muscle-injury-and-increases-hmgb1-after-arterial-ligation
#19
Jun Xu, Xiangdong Cui, Jiehua Li, Panagiotis Koutakis, Iraklis Pipinos, Edith Tzeng, Alex Chen, Ulka Sachdev
OBJECTIVE: We have previously shown that exogenous administration of the nuclear protein high mobility group box 1 (HMGB1) improves angiogenesis after tissue ischemia. Antagonizing HMGB1 prolongs muscle necrosis and deters regeneration. In this study, we evaluated HMGB1 expression in peripheral arterial disease (PAD) and the mechanisms that promote its release in a murine model of hindlimb ischemia. Specifically, we investigated how chloroquine (CQ), a commonly employed disease-modifying antirheumatic drug, promotes HMGB1 release from muscle...
March 1, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28257515/new-evidence-for-the-therapeutic-potential-of-curcumin-to-treat-nonalcoholic-fatty-liver-disease-in-humans
#20
María Eugenia Inzaugarat, Elena De Matteo, Placida Baz, Diego Lucero, Cecilia Claudia García, Esteban Gonzalez Ballerga, Jorge Daruich, Juan Antonio Sorda, Miriam Ruth Wald, Alejandra Claudia Cherñavsky
INTRODUCTION: The immune system acts on different metabolic tissues that are implicated in the pathogenesis of nonalcoholic fatty liver disease (NAFLD). Leptin and linoleic acid have the ability to potentially affect immune cells, whereas curcumin is a known natural polyphenol with antioxidant and anti-inflammatory properties. AIMS: This study was designed to evaluate the pro-inflammatory and pro-oxidant effects of leptin and linoleic acid on immune cells from patients with NAFLD and to corroborate the modulatory effects of curcumin and its preventive properties against the progression of NAFLD using a high-fat diet (HFD)-induced NAFLD/nonalcoholic steatohepatitis mouse model...
2017: PloS One
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