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Adipokines

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https://www.readbyqxmd.com/read/28440767/zinc-alpha-2-glycoprotein-is-overproduced-in-cushing-s-syndrome
#1
Xavier Escoté, Gloria B Aranda, Mireia Mora, Gregori Casals, Joaquim Enseñat, Oscar Vidal, Yaiza Esteban, Irene Halperin, Felicia A Hanzu
INTRODUCTION: Cushing syndrome (CS), an endogenous hypercortisolemic condition with increased cardiometabolic morbidity, leads to development of abdominal obesity, insulin resistance, diabetes and proatherogenic dyslipidemia. Zinc alpha-2 glycoprotein (ZAG) is a recently characterized lipolytic adipokine implicated in regulation of adipose tissue metabolism and fat distribution. In vitro and animal studies suggest that glucocorticoids interact with ZAG secretion and action. To assess the relationship between ZAG and glucocorticoids in a human model of hypercortisolism, circulating ZAG levels were tested in patients with CS and its counterpart controls...
January 2017: Endocrinol Diabetes Nutr
https://www.readbyqxmd.com/read/28440735/nuclear-factor-e2-related-factor-2-knockdown-enhances-glucose-uptake-and-alters-glucose-metabolism-in-aml12-hepatocytes
#2
Xiaoyang Yuan, Huijing Huang, Yi Huang, Jinli Wang, Jinhua Yan, Ling Ding, Cuntai Zhang, Le Zhang
Nuclear factor E2-related factor 2 (Nrf2) is a transcription factor known to induce the expression of a variety of antioxidant and detoxification genes. Recently, increasing evidence has revealed roles for Nrf2 in glucose, lipid, and energy metabolism; however, the exact functions of Nrf2 in hepatocyte biology are largely unclear. In the current study, the transient knockdown of Nrf2 via siRNA transfection enhanced the glucose uptake of fasting AML12 hepatocytes to 325.3 ± 11.1% ( P < 0.05) of that of untransfected control cells...
May 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28439492/leptin-signaling-and-cancer-chemoresistance-perspectives
#3
EDITORIAL
Pierre V Candelaria, Antonio Rampoldi, Adriana Harbuzariu, Ruben R Gonzalez-Perez
Obesity is a major health problem and currently is endemic around the world. Obesity is a risk factor for several different types of cancer, significantly promoting cancer incidence, progression, poor prognosis and resistance to anti-cancer therapies. The study of this resistance is critical as development of chemoresistance is a serious drawback for the successful and effective drug-based treatments of cancer. There is increasing evidence that augmented adiposity can impact on chemotherapeutic treatment of cancer and the development of resistance to these treatments, particularly through one of its signature mediators, the adipokine leptin...
April 10, 2017: World Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28439315/36%C3%A2-h-fasting-of-young-men-influences-adipose-tissue-dna-methylation-of-lep-and-adipoq-in-a-birth-weight-dependent-manner
#4
Line Hjort, Sine W Jørgensen, Linn Gillberg, Elin Hall, Charlotte Brøns, Jan Frystyk, Allan A Vaag, Charlotte Ling
BACKGROUND: Subjects born with low birth weight (LBW) display a more energy-conserving response to fasting compared with normal birth weight (NBW) subjects. However, the molecular mechanisms explaining these metabolic differences remain unknown. Environmental influences may dynamically affect epigenetic marks, also in postnatal life. Here, we aimed to study the effects of short-term fasting on leptin (LEP) and adiponectin (ADIPOQ) DNA methylation and gene expression in subcutaneous adipose tissue (SAT) from subjects with LBW and NBW...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/28439093/gene-expression-profile-of-subcutaneous-adipose-tissue-in-bmi-discordant-monozygotic-twin-pairs-unravels-molecular-and-clinical-changes-associated-with-sub-types-of-obesity
#5
M Muniandy, S Heinonen, H Yki-Järvinen, A Hakkarainen, J Lundbom, N Lundbom, J Kaprio, A Rissanen, M Ollikainen, K H Pietiläinen
BACKGROUND: Subcutaneous adipose tissue (SAT) undergoes major changes in obesity, but little is known about the whole-genome scale patterns of these changes or about their variation between different obesity subgroups. We sought to compare how transcriptomics profiles in SAT differ between monozygotic (MZ) co-twins who are discordant for body mass index (BMI), whether the profiles vary between twin pairs and whether the variation can be linked to clinical characteristics. METHODS: We analyzed the transcriptomics (Affymetrix U133 Plus 2...
April 25, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28437814/assessment-of-early-cardiovascular-risk-in-children-and-adolescents-with-essential-hypertension
#6
Andreja Stelcar, Evgenija Homsak, Natasa Marcun Varda
The aim of our study was to investigate some early markers of hypertensive target organ damage in hypertensive children and adolescents, and to detect those showing most prominent clinical significance. We included 100 children with essential hypertension (EH) and 50 age-matched healthy control children, and evaluated left ventricular mass (LVM), intima-media thickness in the carotid arteries (IMT), pulse wave velocity (PWV), microalbuminuria, biochemical parameters and some adipokines. Statistically significant differences between the 2 groups were observed for HDL-cholesterol, LDL-cholesterol, triglycerides, insulin, uric acid, glucose, apolipoprotein A1, and total adiponectin...
April 24, 2017: Klinische Pädiatrie
https://www.readbyqxmd.com/read/28437198/branched-chain-amino-acids-are-associated-with-insulin-resistance-independent-of-leptin-and-adiponectin-in-subjects-with-varying-degrees-of-glucose-tolerance
#7
Margery A Connelly, Justyna Wolak-Dinsmore, Robin P F Dullaart
BACKGROUND: Branched chain amino acids (BCAA) may be involved in the pathogenesis of insulin resistance and are associated with type 2 diabetes mellitus (T2DM) development. Adipokines such as leptin and adiponectin influence insulin resistance and reflect adipocyte dysfunction. We examined the extent to which the association of BCAA with insulin resistance is attributable to altered leptin and adiponectin levels in individuals with varying degrees of glucose tolerance. METHODS: BCAA were measured by nuclear magnetic resonance, whereas leptin and adiponectin were measured by immunoassay, in subjects with normal fasting glucose (n = 30), impaired fasting glucose (n = 25), and T2DM (n = 15)...
February 21, 2017: Metabolic Syndrome and related Disorders
https://www.readbyqxmd.com/read/28436761/androgen-and-estrogen-shifts-in-men-before-and-after-bariatric-surgery-and-links-to-vitamins-and-trace-elements
#8
Alberto Rosenblatt, Joel Faintuch, Ivan Cecconello
Androgens and estrogens play a key role regarding sexual life and reproduction. Along with hypotestosteronemia, obese men exhibit a 2-fold increase in estradiol concentration, adversely infl uencing these parameters. Estrogens and adipokines also infl uence bone metabolism, exerting a direct effect on vitamin D, calcium homeostasis and bone health. Bariatric procedures normalize some sex hormones, and may reverse several obesity-related conditions. Estrogens levels may remain elevated postoperatively, and despite its protective effect on the skeleton, bariatric patients are more prone to fractures when compared to the general population...
April 24, 2017: International Journal for Vitamin and Nutrition Research. Journal International de Vitaminologie et de Nutrition
https://www.readbyqxmd.com/read/28435397/leptin-receptor-q223r-polymorphism-in-egyptian-female-patients-with-breast-cancer
#9
Mona Abo-Bakr El-Hussiny, Mohmed Ali Atwa, Waleed Elnahas Rashad, Dalia A Shaheen, Nora Marzouk Elkady
AIM OF THE STUDY: Breast cancer is the most common cause of death in women. Obesity has been associated with increased risk of breast cancer in post-menopausal women. It induces chronic inflammation, which increases local and systemic levels of cytokines and adipokines such as leptin. Leptin (LEP) and leptin receptor (LEPR) genes have several polymorphisms in humans. This study aims to assess the association between blood levels of leptin and LEPR Q223R gene polymorphism in patients of cancer breast...
2017: Contemporary Oncology Współczesna Onkologia
https://www.readbyqxmd.com/read/28435278/genetic-factors-in-pathogenesis-of-diabetes-mellitus-after-kidney-transplantation
#10
REVIEW
Maciej Tarnowski, Sylwia Słuczanowska-Głabowska, Andrzej Pawlik, Małgorzata Mazurek-Mochol, Elżbieta Dembowska
Posttransplant diabetes mellitus (PTDM) is one of the major metabolic complications after transplantation of solid organs including the kidney. This type of diabetes mellitus affects allograft survival, cardiovascular complications and overall patient survival. The modifiable risk factors that contribute to PTDM include obesity, some viral infections (eg, hepatitis C virus, cytomegalovirus) and especially immunosuppressive drugs including corticosteroids, tacrolimus, cyclosporine and sirolimus. Currently, predisposing genetic factors have been considered important in PTDM development...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28434109/insights-into-the-link-between-obesity-and-cancer
#11
REVIEW
Sarah E Ackerman, Olivia A Blackburn, François Marchildon, Paul Cohen
PURPOSE OF REVIEW: Adipocytes have adapted to store energy in the form of lipid and also secrete circulating factors called adipokines that signal to other tissues to coordinate energy homeostasis. These functions are disrupted in the setting of obesity, promoting the development of diseases such as diabetes, cardiovascular disease, and cancer. RECENT FINDINGS: Obesity is linked to an increased risk of many types of cancer and increased cancer-related mortality...
April 22, 2017: Current Obesity Reports
https://www.readbyqxmd.com/read/28433778/novel-lipid-mimetic-prodrugs-delivering-active-compounds-to-adipose-tissue
#12
Andrea Mattarei, Andrea Rossa, Veronica Bombardelli, Michele Azzolini, Martina La Spina, Cristina Paradisi, Mario Zoratti, Lucia Biasutto
Obesity and associated pathologies are a dramatically growing problem. New therapies to prevent and/or cure them are strongly needed. Adipose tissue is a logical target for pharmacological intervention, since it is now recognized to exert an important endocrine function, secreting a variety of adipokines affecting, for example, adiposity and insulin resistance. This proof of principle work focuses on the development of novel lipid-mimetic prodrugs reaching fat deposits by the same lymphatic absorption route followed by dietary triglycerides...
April 13, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28433698/adipose-crosstalk-with-other-cell-types-in-health-and-disease
#13
REVIEW
Chan Hee J Choi, Paul Cohen
In addition to storing and mobilizing energy, adipocytes secrete circulating factors to signal to other tissues and coordinate energy metabolism. These functions can become disrupted in the setting of obesity, contributing to the development of diabetes, cardiovascular disease, and cancer. Since the discovery of leptin and adiponectin, an increasing number of adipokines have been identified and their functions elucidated. More recent studies have highlighted other modes by which adipose tissue can participate in crosstalk with other cell types and tissues...
April 19, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28429895/interleukin-6-and-resistin-in-relation-to-anthropometric-measurements-in-school-children
#14
Carolina Del Pilar Escalona-Villasmil, Jorymar Yoselyn Leal-Montiel, Pablo Antonio Ortega-Fernindez, Carlos Javier Chavez
The worldwide prevalence of childhood obesity has increased greatly over the past three decades. The increasing occurrence in children of disorders, such as type 2 diabetes, is believed to be a consequence of this obesity epidemic. Although the precise mechanisms are still unclear, dysregulated production or secretion of adipokines caused by excess adipose tissue and adipose tissue dysfunction can contribute to the development of obesity-related me- tabolic diseases. The objective of the study was to determine the serum levels of interleukin-6 and resistin in relation to anthropometric measurements in school children...
June 2016: Investigación Clínica
https://www.readbyqxmd.com/read/28428025/adipokines-as-atherothrombotic-risk-factors-in-obese-subjects-associations-with-haemostatic-markers-and-common-carotid-wall%C3%A2-thickness
#15
É Csongrádi, M Káplár, B Nagy, C A Koch, A Juhász, L Bajnok, Z Varga, I Seres, Z Karányi, M T Magyar, L Oláh, A Facskó, J Kappelmayer, G Paragh
BACKGROUND AND AIMS: Some crucial associations between obesity-related altered adipokine levels and the main factors of atherosclerotic, atherothrombotic processes are not fully known. We analysed the relationships of classic adipokines, namely leptin, resistin, adiponectin, tumour necrosis factor-alpha (TNF-α), interleukin 6 (IL-6) with the markers of platelet activation, including mean platelet volume (MPV), platelet surface/soluble P-selectin, platelet-derived microparticles (PMPs), the parameters of coagulation abnormalities and common carotid intima-media thickness (IMT) in obese patients with or without atherosclerotic comorbidities in comparison to age- and sex-matched controls...
March 8, 2017: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
https://www.readbyqxmd.com/read/28427413/adiponectin-levels-in-the-serum-and-cerebrospinal-fluid-of-amyotrophic-lateral-sclerosis-patients-possible-influence-on-neuroinflammation
#16
Patrizia Bossolasco, Raffaella Cancello, Alberto Doretti, Claudia Morelli, Vincenzo Silani, Lidia Cova
BACKGROUND: Adiponectin (APN) is a key player in energy homeostasis strictly associated with cerebrovascular and neurodegenerative diseases. Since APN also belongs to anti-inflammatory-acting adipokines and may influence both neuroinflammation and neurodegenerative processes, we decided to study the APN levels in amyotrophic lateral sclerosis (ALS) and other neurodegenerative diseases. METHODS: We assessed APN levels by ELISA immunoassay in both the serum and cerebrospinal fluid of a cohort of familial and sporadic ALS patients, characterized by normal body mass index and absence of dysautonomic symptoms...
April 20, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28426339/fasting-levels-of-insulin-and-amylin-after-acute-pancreatitis-are-associated-with-pro-inflammatory-cytokines
#17
Nicola A Gillies, Sayali A Pendharkar, Ruma G Singh, John A Windsor, Madhav Bhatia, Maxim S Petrov
BACKGROUND: The prevalence of metabolic diseases continues to rise worldwide, with a growing recognition of metabolic dysregulation after acute inflammatory diseases such as acute pancreatitis (AP). Adipokines and cytokines play an important role in metabolism and the course of AP, but there is a paucity of research investigating their relationship with pancreatic hormones after AP. This study aimed to explore associations between pancreatic hormones with adipokines and cytokines to provide insights into the pathophysiology of altered pancreatic hormone secretion following AP...
April 20, 2017: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/28425943/beneficial-effect-of-voluntary-exercise-on-experimental-colitis-in-mice-fed-a-high-fat-diet-the-role-of-irisin-adiponectin-and-proinflammatory-biomarkers
#18
Agnieszka Irena Mazur-Bialy, Jan Bilski, Dagmara Wojcik, Bartosz Brzozowski, Marcin Surmiak, Magdalena Hubalewska-Mazgaj, Anna Chmura, Marcin Magierowski, Katarzyna Magierowska, Tomasz Mach, Tomasz Brzozowski
Inflammatory bowel diseases (IBDs) are a heterogeneous group of disorders exhibited by two major phenotypic forms: Crohn's disease and ulcerative colitis. Although the aetiology of IBD is unknown, several factors coming from the adipose tissue and skeletal muscles, such as cytokines, adipokines and myokines, were suggested in the pathogenesis of ulcerative colitis; however, it has not been extensively studied whether voluntary exercise can ameliorate that disorder. We explored the effect of moderate exercise (i...
April 20, 2017: Nutrients
https://www.readbyqxmd.com/read/28425851/altered-structure-and-function-of-adipose-tissue-in-long-lived-mice-with-growth-hormone-related-mutations
#19
Justin Darcy, Samuel McFadden, Andrzej Bartke
A major focus of biogerontology is elucidating the role(s) of the endocrine system in aging and the accumulation of age-related diseases. Endocrine control of mammalian longevity was first reported in Ames dwarf (Prop1(df)) mice, which are long-lived due to a recessive Prop1 loss-of-function mutation resulting in deficiency of growth hormone (GH), thyroid-stimulating hormone, and prolactin. Following this report, several other GH-related mutants with altered longevity have been described including long-lived Snell dwarf and growth hormone receptor knockout mice, and short-lived GH overexpressing transgenic mice...
March 21, 2017: Adipocyte
https://www.readbyqxmd.com/read/28423886/adiponectin-induced-ampk-impairment-mediates-insulin-resistance-in-bama-mini-pig-fed-high-fat-and-high-sucrose-diet
#20
Miaomiao Niu, Lei Xiang, Yaqian Liu, Yuqiong Zhao, Jifang Yuan, Xin Dai, Hua Chen
Objective: Adipose tissue is no longer considered as an inert storage organ for lipid, but instead is thought to play an active role in regulating insulin effects via secretion adipokines. However, conflicting reports have emerged regarding the effects of adipokines. In this study, we investigated the role of adipokines in glucose metabolism and insulin sensitivity in obese Bama mini-pigs. Methods: An obesity model was established in Bama mini-pigs, by feeding with high-fat and high-sucrose diet for 30 weeks...
March 25, 2017: Asian-Australasian Journal of Animal Sciences
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