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Adipokines

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https://www.readbyqxmd.com/read/29240812/effects-of-vaspin-on-pancreatic-%C3%AE-cell-secretion-via-pi3k-akt-and-nf-%C3%AE%C2%BAb-signaling-pathways
#1
Shiwei Liu, Xin Li, Yaru Wu, Ruixue Duan, Jiaxin Zhang, Fang Du, Qi Zhang, Yuanbin Li, Naishi Li
Vaspin (visceral adipose tissue-derived serine protease inhibitor) is a recently discovered adipokine that has been implicated in diabetes mellitus and other metabolic disorders. However, the effects of vaspin on pancreatic β cell function and related mechanisms are not fully understood. Thus, the present study was performed to investigate the effects of vaspin on pancreatic β cell function and the potential underlying mechanisms. Both in vitro (rat insulinoma cells, INS-1) and in vivo (high fat diet fed rats) experiments were conducted...
2017: PloS One
https://www.readbyqxmd.com/read/29235656/nonalcoholic-fatty-liver-disease-in-patients-with-psoriasis-a-consequence-of-systemic-inflammatory-burden
#2
REVIEW
R B Prussick, L Miele
Patients with psoriasis are at an increased risk for nonalcoholic fatty liver disease (NAFLD) compared to the general population. However, the pathophysiology underlying this comorbidity and elucidation of effective treatment strategies are unclear. This review provides insights into the possible role of chronic, low-grade inflammation in the pathogenesis of NAFLD in patients with psoriasis. Both conditions are associated with increased levels of pro-inflammatory adipokines (such as tumor necrosis factor-α and interleukin-6), and hepatokines, and decreased levels of adiponectin, an anti-inflammatory adipokine...
December 13, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/29235553/pro-inflammatory-gene-expression-profile-in-obese-adults-with-high-plasma-gip-levels
#3
J Góralska, U Raźny, A Polus, J Stancel-Możwiłło, M Chojnacka, A Gruca, A Zdzienicka, A Dembińska-Kieć, B Kieć-Wilk, B Solnica, M Malczewska-Malec
BACKGROUND: GIP provides a novel link between the immune system and the gut, although results from different experimental and observational studies are contradictory, ranging from anti-inflammatory, through neutral to pro-inflammatory action of GIP. Thus, the aim of this study was to analyze inflammatory pathways on the level of gene expression and circulating inflammatory markers in relation to plasma GIP level. SUBJECTS/METHODS: The study included 128 obese adults...
December 13, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29234283/high-fat-diet-decreases-neuronal-activation-in-the-brain-induced-by-resistin-and-leptin
#4
Naif Alsuhaymi, Hamza Habeeballah, Martin J Stebbing, Emilio Badoer
Resistin and leptin are adipokines which act in the brain to regulate metabolic and cardiovascular functions which in some instances are similar, suggesting activation of some common brain pathways. High-fat feeding can reduce the number of activated neurons observed following the central administration of leptin in animals, but the effects on resistin are unknown. The present work compared the distribution of neurons in the brain that are activated by centrally administered resistin, or leptin alone, and, in combination, in rats fed a high fat (HFD) compared to a normal chow diet (ND)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29232702/adipose-tissue-deficiency-of-hormone-sensitive-lipase-causes-fatty-liver-in-mice
#5
Bo Xia, Guo He Cai, Hao Yang, Shu Pei Wang, Grant A Mitchell, Jiang Wei Wu
Fatty liver is a major health problem worldwide. People with hereditary deficiency of hormone-sensitive lipase (HSL) are reported to develop fatty liver. In this study, systemic and tissue-specific HSL-deficient mice were used as models to explore the underlying mechanism of this association. We found that systemic HSL deficient mice developed fatty liver in an age-dependent fashion between 3 and 8 months of age. To further explore the mechanism of fatty liver in HSL deficiency, liver-specific HSL knockout mice were created...
December 12, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/29232663/serum-leptin-resistin-and-adiponectin-concentrations-in-psoriasis-a-meta-analysis-of-observational-studies
#6
Aikaterini Kyriakou, Aikaterini Patsatsi, Dimitrios Sotiriadis, Dimitrios G Goulis
BACKGROUND: Psoriasis is an immune-mediated, inflammatory disease. Adipokines contribute to the regulation of immune-mediated processes and inflammation. OBJECTIVE: The aim of our study was to systematically review the literature for studies that have evaluated the circulating concentrations of adipokines in patients with psoriasis and controls and to meta-analyze the best evidence available. METHODS: Eligible were studies that have assessed leptin, resistin, or adiponectin concentrations in psoriatic patients and a reference group...
December 13, 2017: Dermatology: International Journal for Clinical and Investigative Dermatology
https://www.readbyqxmd.com/read/29229313/emerging-role-of-adipocytokines-in-type-2-diabetes-as-mediators-of-insulin-resistance-and-cardiovascular-disease
#7
REVIEW
Ravindran Jaganathan, Rajeswari Ravindran, Sugapriya Dhanasekaran
Adipose tissue is an enormously active endocrine organ, secreting various hormones, such as adiponectin, leptin, resistin and visfatin, together with classical cytokines, such as tumor necrosis factor-alpha (TNF-α) and interleukin-6 (IL-6). All these adipocytokines plays significant roles in the regulation of energy metabolism, glucose and lipid metabolism, reproduction, cardiovascular function and immunity. Adipocytokines are significantly regulated by nutritional status and can directly influence other organ systems, including brain, liver and skeletal muscle...
December 8, 2017: Canadian Journal of Diabetes
https://www.readbyqxmd.com/read/29226876/serum-c-peptide-visfatin-resistin-and-ghrelin-are-altered-in-sporadic-and-grn-associated-frontotemporal-lobar-degeneration
#8
Roberta Zanardini, Luisa Benussi, Silvia Fostinelli, Claudia Saraceno, Miriam Ciani, Barbara Borroni, Alessandro Padovani, Giuliano Binetti, Roberta Ghidoni
Frontotemporal lobar degeneration (FTLD) is a group of complex neurodegenerative disease characterized by progressive deterioration of the frontal and anterior temporal lobes of the brain resulting in different heterogeneous conditions, mainly characterized by personality changes, behavioral disturbances, such as binge eating, and deficits in language and executive functions. Null mutations in progranulin gene (GRN) are one of the most frequent genetic determinants in familial frontotemporal dementia. Recently, progranulin was recognized as an adipokine involved in diet-induced obesity and insulin resistance revealing its metabolic function...
December 1, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29225622/correlation-between-ch2ds2-vasc-score-and-serum-leptin-levels-in-cardioembolic-stroke-patients-the-impact-of-metabolic-syndrome
#9
Anna Szczepańska-Szerej, Jacek Kurzepa, Aneta Grabarska, Joanna Bielewicz, Ewa Wlizło-Dyś, Konrad Rejdak
Objective: To determine adipokines levels in patients with different etiologic subtypes of acute ischemic stroke (AIS) and metabolic syndrome (MetS) status. Methods: Serum adiponectin, leptin, and resistin levels were determined by ELISA in 99 AIS patients and 59 stroke-free control group subjects. Stroke patients were grouped based on MetS, modified TOAST classification, and CHA2DS2-VASc scale in case of cardioembolic stroke following atrial fibrillation. Results: No differences were found in all adipokine serum levels between AIS patients and appropriately matched control group...
2017: International Journal of Endocrinology
https://www.readbyqxmd.com/read/29225423/adiposity-measures-and-plasma-adipokines-in-females-with-rheumatoid-and-osteoarthritis
#10
Vanessa DeClercq, Yunsong Cui, Cynthia Forbes, Scott A Grandy, Melanie Keats, Louise Parker, Ellen Sweeney, Zhijie Michael Yu, Trevor J B Dummer
The objective of this study was to examine the relationship between adipokines and adiposity in individuals with rheumatoid and osteoarthritis in the Atlantic PATH cohort. Using a nested case-control analysis, participants in the Atlantic PATH cohort with rheumatoid or osteoarthritis were matched for measures of adiposity with participants without a history of arthritis. Both measured and self-reported data were used to examine disease status, adiposity, and lifestyle factors. Immunoassays were used to measure plasma markers...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/29224669/circadian-aspects-of-adipokine-regulation-in-rodents
#11
REVIEW
Etienne Challet
Most hormones display daily fluctuations of secretion during the 24-h cycle. This is also the case for adipokines, in particular the anorexigenic hormone, leptin. The temporal organization of the endocrine system is principally controlled by a network of circadian clocks. The circadian network comprises a master circadian clock, located in the suprachiasmatic nucleus of the hypothalamus, synchronized to the ambient light, and secondary circadian clocks found in various peripheral organs, such as the adipose tissues...
December 2017: Best Practice & Research. Clinical Endocrinology & Metabolism
https://www.readbyqxmd.com/read/29224092/sex-differences-in-leptin-control-of-cardiovascular-function-in-health-and-metabolic-diseases
#12
Eric J Belin de Chantemèle
Leptin, the adipocyte-derived hormone identified in 1994 for its major role in the control of satiety and body weight regulation, is an adipokine secreted in a sex-specific manner. Although it has clearly been established that females secrete three to four times more leptin than males and that this sexual dimorphism in leptin secretion is exacerbated with overweight and obesity, the origin and the physiological consequences of this sexual dimorphism remain ill-defined. The adipose tissue is the major site of leptin secretion; however, leptin receptors are ubiquitously expressed, conferring to leptin, and indirectly to the adipose tissue, a potential role in the control of numerous physiological functions...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29224025/alterations-in-adiposity-and-glucose-homeostasis-in-adult-gasp-1-overexpressing-mice
#13
Luce Périè, Alexis Parenté, Fabienne Baraige, Laetitia Magnol, Véronique Blanquet
BACKGROUND/AIMS: Myostatin is known as a powerful negative regulator of muscle growth playing a key role in skeletal muscle homeostasis. Recent studies revealed that myostatin-deficient mice lead to an increase of insulin sensitivity, a decrease of adiposity and a resistance to obesity, showing that myostatin can also impact on metabolism. Thus, myostatin appeared as a potential therapeutic target to treat insulin resistance. METHODS: We generated transgenic mice overexpressing Gasp-1, a myostatin inhibitor...
December 8, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29222456/bmps-as-new-insulin-sensitizers-enhanced-glucose-uptake-in-mature-3t3-l1-adipocytes-via-ppar%C3%AE-and-glut4-upregulation
#14
Isabelle Schreiber, Gina Dörpholz, Claus-Eric Ott, Bjørt Kragesteen, Nancy Schanze, Cory Thomas Lee, Josef Köhrle, Stefan Mundlos, Karen Ruschke, Petra Knaus
Insulin-resistance is the main cause of type 2 diabetes. Here we describe the identification and characterization of BMP2 and BMP6 as new insulin-sensitizing growth factors in mature adipocytes. We show that BMP2 and BMP6 lead to enhanced insulin-mediated glucose uptake in both insulin-sensitive and -insensitive adipocytes. We exclude a direct effect of BMP2 or BMP6 on translocation of GLUT4 to the plasma membrane and demonstrate that these BMPs increase GLUT4 protein levels equipotent to Rosiglitazone. BMPs induce expression of PPARγ as the crucial mediator for the insulin-sensitizing effect...
December 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29222347/pioglitazone-inhibits-periprostatic-white-adipose-tissue-inflammation-in-obese-mice
#15
Miki Miyazawa, Kotha Subbaramaiah, Priya Bhardwaj, Xi K Zhou, Hanhan Wang, Domenick J Falcone, Dilip D Giri, Andrew J Dannenberg
Obesity is associated with an increased incidence of high-grade prostate cancer (PC) and poor prognosis for PC patients. Recently, we showed that obesity-related periprostatic white adipose tissue (WAT) inflammation, characterized by crown-like structures (CLS) consisting of dead or dying adipocytes surrounded by macrophages, was associated with high-grade PC. It's possible, therefore, that agents that suppress periprostatic WAT inflammation will alter the development or progression of PC. Pioglitazone, a ligand of PPARγ is used to treat diabetes and possesses anti-inflammatory properties...
December 8, 2017: Cancer Prevention Research
https://www.readbyqxmd.com/read/29219172/roles-of-lipocalin-2-and-adiponectin-in-iron-overload-cardiomyopathy
#16
REVIEW
Natthaphat Siri-Angkul, Siriporn C Chattipakorn, Nipon Chattipakorn
Thalassemia is among the most common genetic diseases worldwide. Ineffective erythropoiesis, chronic hemolysis, and regular blood transfusion in thalassemia patients lead to increased iron burden. Iron overload cardiomyopathy is the most severe co-morbidity and most common cause of mortality in thalassemia patients. Although its associated mechanisms are still not completely understood, cellular iron mishandling, chronic inflammation, and oxidative stress appear to be the key processes involved. In order to acquire a more comprehensive insight of the impact of cardiac iron overload, these alterations need to be intensively investigated...
December 8, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29217381/adiponectin-levels-and-insulin-resistance-among-patients-with-chronic-hepatitis-c
#17
Raoni Freitas Carvalho, Ajax Mercês Atta, Isabela Silva de Oliveira, Taciana Pereira Sant'Ana Santos, João Pedro A Santos, Maria Isabel Schinoni, Maria Luiza Brito de Sousa-Atta
Chronic hepatitis C virus (HCV) infection is associated with insulin resistance (IR), rapid disease progression, and decreased virological response to antiviral treatment. In addition, obesity is a risk factor for chronic hepatitis C evolution and is associated with IR. As adiponectin is an adipokine that is associated with obesity and IR, this study aimed to investigate serum levels of adiponectin among patients with HCV infection and IR. Thirty-three patients with untreated HCV infection underwent testing of serum adiponectin levels (capture ELISA) and were compared to 30 healthy subjects with similar body mass indexes (BMI)...
December 4, 2017: Acta Tropica
https://www.readbyqxmd.com/read/29217361/major-adipokines-and-the-420c-g-resistin-gene-polymorphism-as-predictors-of-acute-ischemic-stroke-severity-and-in-hospital-outcome
#18
Styliani D Bouziana, Konstantinos Tziomalos, Antonios Goulas, Timoleon-Achilleas Vyzantiadis, Athanasia Panderi, Apostolos Ι Ηatzitolios
BACKGROUND: The role of adiponectin, leptin, and resistin and the -420C>G polymorphism of the resistin gene promoter in the pathogenesis of ischemic stroke are controversial. We aimed to evaluate whether serum levels of these adipokines and the -420C>G polymorphism are associated with ischemic stroke severity and in-hospital outcome. METHODS: We prospectively studied 93 patients who were consecutively hospitalized for acute ischemic stroke (39.8% males, age 79...
December 4, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29216525/high-refined-carbohydrate-diet-promotes-detrimental-effects-on-alveolar-bone-and-femur-microarchitecture
#19
C C Montalvany-Antonucci, M C Zicker, S Macari, T S F Pereira, I M A Diniz, I Andrade, A V M Ferreira, T A Silva
The impact of high-refined carbohydrate (HC) diet on fat accumulation, adipokines secretion and systemic inflammation is well described. However, it remains unclear whether these processes affect bone remodeling. OBJECTIVE: To investigate the effects of HC diet in the alveolar bone and femur parameters. METHODS: BalbC mice were fed with conventional chow or HC diet for 12 weeks. After experimental time maxillae, femur, blood and white adipose tissue samples were collected...
November 28, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/29213336/adiponectin-resistin-interplay-in-serum-and-in-adipose-tissue-of-obese-and-normal-weight-individuals
#20
Marta Izabela Jonas, Alina Kurylowicz, Zbigniew Bartoszewicz, Wojciech Lisik, Maurycy Jonas, Justyna Domienik-Karlowicz, Monika Puzianowska-Kuznicka
Background: The interplay between adiponectin and resistin, the two adipokines of opposite effects, may determine the metabolic profile of obese individuals and development of obesity-related complications. The current study was conducted to assess how adiponectin/resistin interplay in sera and adipose tissues may influence the metabolic profile of obese and normal-weight subjects. Methods: Concentrations of adiponectin and resistin were measured on protein level by immunoassay in visceral and subcutaneous adipose tissues from 50 obese (body mass index > 40 kg/m2) and 28 normal-weight (body mass index 20-24...
2017: Diabetology & Metabolic Syndrome
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