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https://www.readbyqxmd.com/read/29156726/adiponectin-receptor-agonists-inhibit-leptin-induced-pstat3-and-in-vivo-pancreatic-tumor-growth
#1
Fanuel Messaggio, Alisha M Mendonsa, Jason Castellanos, Nagaraj S Nagathihalli, Lee Gorden, Nipun B Merchant, Michael N VanSaun
Obesity is a significant risk factor for pancreatic cancer, harboring a chronic inflammatory condition characterized by dysregulation of the adipokines, leptin and adiponectin, that in turn alter oncogenic signaling pathways. We and others have shown that leptin promotes the proliferation and an invasive potential of pancreatic cancer cells through STAT3 mediated signaling. However, the role of adiponectin on the tumorigenicity of pancreatic cancer has not been elucidated. Adiponectin represents an important negative regulator of cytokines, which acts through two receptors, ADIPOR1 and ADIPOR2, to elicit pro-apoptotic, anti-inflammatory, and anti-angiogenic responses...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29155136/adipose-tissue-and-reproductive-health
#2
REVIEW
Hannah Mathew, V Daniel Castracane, Christos Mantzoros
The understanding of adipose tissue role has evolved from that of a depot energy storage organ to a dynamic endocrine organ. While genetics, sexual phenotype and sex steroids can impact the mass and distribution of adipose tissue, there is a counter-influence of white adipocytes on reproduction. This primarily occurs via the secretion of adipokines, the most studied of which- leptin and adiponectin- are highlighted in this article. Leptin, the "satiety hormone" primarily acts on the hypothalamus via pro-opiomelanocortin (POMC), neuropeptide Y (NPY), and agouti-related peptide (AgRP) NPY neurons to translate acute changes in nutrition and energy expenditure, as well as chronic adipose accumulation into changes in appetite and potentially mediate insulin resistance via shared pathway and notably impacting reproductive health via influence on GnRH secreting neurons...
November 16, 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29154467/central-and-peripheral-leptin-and-agouti-related-protein-during-and-after-pregnancy-in-relation-to-weight-change
#3
Ulrika Andersson Hall, Pernilla Svedin, Ulf Andreasson, Magnus Gren, Ameli Ingemansson, Henrik Zetterberg, Kaj Blennow, Aurimantas Pelanis, Carina Mallard, Agneta Holmäng
OBJECTIVE: To study changes of neuropeptides and adipokines in cerebrospinal fluid (CSF) and serum from pregnancy to post-pregnancy in relation to weight changes, fat mass and glucose metabolism. CONTEXT: With high postpartum weight retention being a risk factor in future pregnancies and of life-long obesity we evaluated neuropeptide and adipokine changes in women who either gained weight or were weight stable. DESIGN: Women were followed for 5±1 years after pregnancy and divided into two groups, Weight-Stable and Weight-Gain, by weight change from start of pregnancy...
November 20, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/29153939/serum-concentrations-of-fetuin-b-in-lipodystrophic-patients
#4
Konstanze Miehle, Thomas Ebert, Susan Kralisch, Annett Hoffmann, Jürgen Kratzsch, Haiko Schlögl, Michael Stumvoll, Mathias Fasshauer
OBJECTIVE: Fetuin B is an adipokine/hepatokine which is significantly elevated in insulin resistance/type 2 diabetes mellitus and hepatic steatosis. Regulation of fetuin B in patients with lipodystrophy (LD) - a disease group which is characterized by subcutaneous adipose tissue loss, hypertriglyceridemia, hepatic steatosis, insulin resistance, and dysregulation of several adipokines - has not been elucidated so far. MATERIAL AND METHODS: Serum fetuin B levels were determined in 37 patients with LD, as well as in a control cohort consisting of 37 non-LD participants matched for age, gender, and body mass index...
November 16, 2017: Cytokine
https://www.readbyqxmd.com/read/29151248/adiponectin-and-vitamin-d-binding-protein-are-independently-associated-at-birth-in-both-mothers-and-neonates
#5
Spyridon N Karras, Stergios Α Polyzos, Danforth A Newton, Carol L Wagner, Bruce W Hollis, Jody van den Ouweland, Erdinc Dursun, Duygu Gezen-Ak, Kalliopi Kotsa, Cedric Annweiler, Declan P Naughton
CONTEXT: Adult body fat is associated with birth anthropometry, suggesting a role for metabolic regulators including vitamin D and the adipokines-adiponectin and irisin-which have been reported to interact but, as yet, data remain controversial. OBJECTIVE: To study (i) the relationship between vitamin D, its binding protein (VDBP) and the adipokines, adiponectin, and irisin in mothers and neonates at birth and (ii) their effects on neonate anthropometric outcomes...
November 18, 2017: Endocrine
https://www.readbyqxmd.com/read/29142618/melatonin-supplementation-lowers-oxidative-stress-and-regulates-adipokines-in-obese-patients-on-a-calorie-restricted-diet
#6
Karolina Szewczyk-Golec, Paweł Rajewski, Marcin Gackowski, Celestyna Mila-Kierzenkowska, Roland Wesołowski, Paweł Sutkowy, Marta Pawłowska, Alina Woźniak
Obesity is one of the major global health problems. Melatonin deficiency has been demonstrated to correlate with obesity. The aim of the study was to estimate the effect of melatonin on oxidative stress and adipokine levels in obese patients on a calorie-restricted diet. Thirty obese patients were supplemented with a daily dose of 10 mg of melatonin (n = 15) or placebo (n = 15) for 30 days with a calorie-restricted diet. Serum levels of melatonin, 4-hydroxynonenal (HNE), adiponectin, omentin-1, leptin, and resistin, as well as erythrocytic malondialdehyde (MDA) concentration and Zn/Cu-superoxide dismutase, catalase, and glutathione peroxidase (GPx) activities, were measured at baseline and after supplementation...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29141971/role-of-microrna-regulation-in-obesity-associated-breast-cancer-nutritional-perspectives
#7
REVIEW
Ravi Kasiappan, Dheeran Rajarajan
Breast cancer is the most common malignancy diagnosed in women, and the incidence of breast cancer is increasing every year. Obesity has been identified as one of the major risk factors for breast cancer progression. The mechanisms by which obesity contributes to breast cancer development is not yet understood; however, there are a few mechanisms counted as potential producers of breast cancer in obesity, including insulin resistance, chronic inflammation and inflammatory cytokines, adipokines, and sex hormones...
November 2017: Advances in Nutrition
https://www.readbyqxmd.com/read/29141507/sandwiched-white-adipose-tissue-a-novel-microphysiological-system-of-human-adipose-tissue
#8
Frank H Lau, Kelly Vogel, John P Luckett, Maxwell Hunt, Alicia Meyer, Camille L Rogers, Oren Tessler, Charles L Dupin, Hugo St Hilaire, Kazi N Islam, Trivia Frazier, Jeffrey Gimble, Steven Scahill
White adipose tissue (WAT) is a critical organ in both health and disease. However, physiologically faithful tissue culture models of primary human WAT remain limited, at best. Here we describe a novel WAT culture system in which primary human WAT is sandwiched between tissue-engineered sheets of adipose-derived stromal cells. This construct, called "sandwiched white adipose tissue" (SWAT), can be defined as a Microphysiological System (MPS) since it is a tissue-engineered, multicellular, 3D organ construct produced using human cells...
November 16, 2017: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/29141038/depot-specific-inflammation-with-decreased-expression-of-atm2-in-white-adipose-tissues-induced-by-high-margarine-lard-intake
#9
Nannan Wang, Jie Guo, Fuding Liu, Mingxia Wang, Chuntao Li, Lihong Jia, Lingling Zhai, Wei Wei, Yinglong Bai
A high-fat diet has been recognized as an important risk factor of obesity, with variable impacts of different fatty acid compositions on the physiological process. To understand the effects of a high-margarine/lard diet, which is a major source of trans fatty acids (TFAs)/ saturated fatty acids (SFAs), elaidic acid as a biomarker of margarine intake was used to screen affected adipokines on mature human adipocytes in vitro. Weaned male Wistar rats were fed a high-fat diet enriched with margarine/lard to generate obesity-prone (OP) and obesity-resistant (OR) models, which were then used to explore the inflammatory responses of depot-specific white adipose tissue...
2017: PloS One
https://www.readbyqxmd.com/read/29138271/addressing-the-perfect-storm-biomarkers-in-obesity-and-pathophysiology-of-cardiometabolic-risk
#10
REVIEW
Krasimira Aleksandrova, Dariush Mozaffarian, Tobias Pischon
BACKGROUND: The worldwide rise of obesity has provoked intensified research to better understand its pathophysiology as a means for disease prevention. Several biomarkers that may reflect various pathophysiological pathways that link obesity and cardiometabolic diseases have been identified over the past decades. CONTENT: We summarize research evidence regarding the role of established and novel obesity-related biomarkers, focusing on recent epidemiological evidence for detrimental associations with cardiometabolic diseases including obesity-related cancer...
November 14, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/29137283/c1q-tumor-necrosis-factor-related-protein-3-protects-macrophages-against-lps-induced-lipid-accumulation-inflammation-and-phenotype-transition-via-ppar%C3%AE-and-tlr4-mediated-pathways
#11
Jiale Lin, Qi Liu, Hui Zhang, Xingtao Huang, Ruoxi Zhang, Shuyuan Chen, Xuedong Wang, Bo Yu, Jingbo Hou
Macrophage inflammation and foam cell formation are critical events during the initiation and development of atherosclerosis (AS). C1q/tumor necrosis factor-related protein-3 (CTRP3) is a novel adipokine with anti-inflammatory and cardioprotection properties; however, little is known regarding the influence of CTRP3 on AS. As macrophages play a key role in AS, this study investigated the effects of CTRP3 on macrophage lipid metabolism, inflammatory reactions, and phenotype transition, as well as underlying mechanisms, to reveal the relationship between CTRP3 and AS...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29135487/update-on-endocrine-aspects-of-childhood-obesity
#12
Charumathi Baskaran, Nurgun Kandemir
PURPOSE OF REVIEW: Although childhood obesity has leveled off in the last decade, 'severe obesity' continues to be on the rise. Various genetic, environmental and hormonal factors contribute to obesity. This article reviews the most current understanding of obesity's multifactorial origin and recent recommendations for its management in childhood and adolescence. RECENT FINDINGS: Epigenetics plays a key role in transmitting obesity risk to offspring. Single-nucleotide polymorphisms at genetic loci for adipokines and their receptors are associated with obesity...
November 11, 2017: Current Opinion in Endocrinology, Diabetes, and Obesity
https://www.readbyqxmd.com/read/29134980/association-between-adiponectin-serum-lipids-and-obesity-in-a-university-setting-in-nigeria
#13
F L Ciroma, J O Ayo, A Mohammed, M B Akor-Dewu, M A Kana, S N Kase
Obesity is an energy imbalance condition, which is accompanied by metabolic and cardiovascular complications.Adiponectin, produced by adipocytes, is an important adipokine involved in carbohydrate and lipid metabolism. Adiponectinlevel is altered in obesity in various populations. In Nigeria, very few studies regarding adiponectin exist, and none, to thebest of our knowledge, investigated the relationship between adiponectin and lipid profile and obesity. Therefore, this studyaims to evaluate changes in adiponectin level and serum lipids with body mass index, and investigate the relationship betweenadiponectin, serum lipids and obesity in Nigerian adults...
June 30, 2017: Nigerian Journal of Physiological Sciences: Official Publication of the Physiological Society of Nigeria
https://www.readbyqxmd.com/read/29129815/biological-effects-of-adipocytes-in-sulfur-mustard-induced-toxicity
#14
Hua Xu, Zhongcai Gao, Peng Wang, Bin Xu, Yajiao Zhang, Long Long, Cheng Zong, Lei Guo, Weijian Jiang, Qinong Ye, Lili Wang, Jianwei Xie
Sulphur mustard (2,2'-dichloroethyl sulfide; SM) is a vesicant chemical warfare agent whose mechanism of acute or chronic action is not known with any certainty and to date there is no effective antidote. SM accumulation in adipose tissue (AT) has been originally verified in our previous study. To evaluate the biological effect caused by the presence of abundant SM in adipocyte and assess the biological role of AT in SM poisoning, in vitro and in vivo experiments were performed. High content analysis revealed multi-cytotoxicity in SM exposed cells in a time and dose dependent manner, and adipocytes showed a relative moderate damage compared with non-adipocytes...
November 10, 2017: Toxicology
https://www.readbyqxmd.com/read/29129238/diet-versus-jaw-bones-lessons-from-experimental-models-and-potential-clinical-implications
#15
REVIEW
Carina Cristina Montalvany-Antonucci, Marina C Zicker, Marina C Oliveira, Soraia Macari, Mila Fernandes M Madeira, Ildeu Andrade, Adaliene Versiani M Ferreira, Tarcilia A Silva
The consumption of different types of diets influences not only body health but the bone remodeling process as well. Nutritional components can directly affect maxillary and mandibular alveolar bone microarchitecture. In this review, we focus on the current knowledge regarding the influence of diets and dietary supplementation on alveolar bone. Accumulating evidence from experimental models suggests that carbohydrate- and fat-rich diets are detrimental for alveolar bone, whereas protective effects are associated with consumption of calcium, ω-3, and bioactive compounds...
January 2018: Nutrition
https://www.readbyqxmd.com/read/29129025/assessment-of-circulating-wnt1-inducible-signalling-pathway-protein-1-wisp-1-ccn4-as-a-novel-biomarker-of-obesity
#16
Christopher Tacke, Krasimira Aleksandrova, Miriam Rehfeldt, Veronica Murahovschi, Mariya Markova, Margrit Kemper, Silke Hornemann, Ulrike Kaiser, Caroline Honig, Christiana Gerbracht, Stefan Kabisch, Tina Hörbelt, D Margriet Ouwens, Martin O Weickert, Heiner Boeing, Andreas F H Pfeiffer, Olga Pivovarova, Natalia Rudovich
WNT1 inducible signaling pathway protein 1 (WISP-1/CCN4) is a novel adipokine, which is upregulated in obesity, and induces a pro-inflammatory response in macrophages in-vitro. Preclinical observations suggested WISP-1/CCN4 as a potential candidate for novel obesity therapy targeting adipose tissue inflammation. Whether circulating levels of WISP-1/CCN4 in humans are altered in obesity and/or type 2 diabetes (T2DM) and in the postprandial state, however, is unknown. This study assessed circulating WISP-1/CCN4 levels in a) paired liquid meal tests and hyperinsulinemic- euglycemic clamps (cohort I, n = 26), b) healthy individuals (cohort II, n = 207) and c) individuals with different stages of obesity and glucose tolerance (cohort III, n = 253)...
November 11, 2017: Journal of Cell Communication and Signaling
https://www.readbyqxmd.com/read/29128642/the-evolution-of-metabolic-regulation-in-animals
#17
Frank Seebacher
Energy metabolism is determined by a suite of regulatory mechanism, and their increasing complexity over evolutionary time provides the key to understanding the emergence of different metabolic phenotypes. Energy metabolism is at the core of biological processes because all organisms must maintain energy balance against thermodynamic gradients. Energy metabolism is regulated by a bewildering array of interacting molecular mechanisms, and much of what is known about metabolic regulation comes from the medical literature...
November 8, 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/29128140/comparative-assessment-of-serum-adipokines-zinc-%C3%AE-2-glycoprotein-and-adipose-triglyceride-lipase-and-cardiovascular-risk-factors-between-normal-weight-and-obese-patients-with-hemodialysis
#18
Mohammad Javad Hosseinzadeh-Attar, Mitra Mahdavi-Mazdeh, Mehdi Yaseri, Narges Sadat Zahed, Elham Alipoor
BACKGROUND: Little is known about the potential relationship of obesity, adipose tissue and novel adipokines with cardiometabolic risk factors in end-stage renal disease. Zinc-α2-glycoprotein (ZAG) and adipose triglyceride lipase (ATGL) are novel adipokines with proposed desirable effects on inflammation, and lipid and glucose metabolism. The aim of this study was to investigate serum concentrations of ZAG and ATGL, and the relationship of these adipokines with cardiovascular risk factors in normal weight (NW) and obese (OB) patients undergoing hemodialysis...
November 8, 2017: Archives of Medical Research
https://www.readbyqxmd.com/read/29127754/-osteoarthritis-as-part-of-metabolic-syndrome
#19
Karel Pavelka
Osteoarthritis (OA) is the most frequent joint disease, whereas etiopathogenesis of OA is not entirely clarified. It is a heterogeneous disorder and genetic as well as biomechanical, endocrine and inflammatory effects may be involved in its origin. The author examines the problems concerning relationships between the metabolic syndrome and OA, and states that the prevalence of metabolic syndrome in patients with OA is higher than in those without OA (59 % vs 23 %). It remains problematic that one of the main components of metabolic syndrome is obesity which in itself is a risk factor for arthrosis development in the weight-bearing joints, not for OA in the hands...
2017: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/29122953/dietary-weight-loss-induced-changes-in-rbp4-ffa-and-ace-predict-weight-regain-in-people-with-overweight-and-obesity
#20
Roel G Vink, Nadia J Roumans, Edwin C Mariman, Marleen A van Baak
Adipokines and other biomarkers were previously identified with roles in energy expenditure, appetite, satiety, and adiposity. Therefore, we investigated whether dietary weight loss-induced changes in adipokines and other biomarkers known to play a role in weight regulation or energy expenditure could predict weight regain in people with overweight and obesity. In this randomized controlled trial 26 males and 30 females (BMI: 28-35 kg/m(2)) followed either a low-calorie diet (LCD; 1250 kcal/day) for 12 weeks or a very-low-calorie diet (VLCD; 500 kcal/day) for 5 weeks followed by a weight stable period of 4 weeks (dietary intervention (DI) period) and a 9-month follow-up period...
November 2017: Physiological Reports
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