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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
#1
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
https://www.readbyqxmd.com/read/29120147/the-association-between-retinol-binding-protein-4-and-cardiovascular-risk-score-is-mediated-by-waist-circumference-in-overweight-obese-adolescent-girls
#2
Aleksandra Klisić, Nebojša Kavarić, Bojko Bjelaković, Ivan Soldatović, Milica Martinović, Jelena Kotur-Stevuljević
Retinol-binding protein 4 (RBP4) is an emerging risk factor for atherosclerotic disease in adults. However, to our knowledge, there are no studies examining the relationship between RBP4 and cardiovascular risk in young population. Therefore, we aimed to estimate this potential relationship in overweight/obese adolescent girls. Seventy overweight/obese adolescent girls, mean age 17.6±1.20 years, were included. Anthropometric and biochemical parameters were measured. Cardiovascular risk score (CVRS) was calculated by adding points for each risk factor (e...
March 2017: Acta Clinica Croatica
https://www.readbyqxmd.com/read/29114012/cbl-downregulation-increases-rbp4-expression-in-adipocytes-of-female-mice
#3
Gulizar Issa Ameen, Silvia Mora
Obesity leads to adipose tissue dysfunction, insulin resistance and diabetes. Adipose tissue produces adipokines,that contribute to regulate insulin sensitivity. In turn insulin stimulates the production and release of some adipokines. Casitas-b-lymphoma proteins (c-Cbl, Cbl-b and Cbl3) are intracellular adaptor signalling proteins that are rapidly phosphorylated by activation of tyrosine kinase receptors. c-Cbl is rapidly phosphorylated by insulin in adipocytes. Here we tested the hypothesis that Cbl signalling regulates adipokine expression in adipose tissue...
November 7, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/29079670/the-levels-of-adipokines-and-hormonal-changes-during-the-menstrual-cycle-in-normal-weight-women
#4
Katarzyna Wyskida, Grzegorz Franik, Tomasz Wikarek, Aleksander Owczarek, Alham Delroba, Jerzy Chudek, Jerzy Sikora, Magdalena Olszanecka-Glinianowicz
CONTEXT: The aim of this study was to assess plasma leptin, adiponectin, resistin, visfatin/NAMPT, omentin-1, vaspin, apelin, TNF-α, IL-6 and RBP4 levels in relation to hormonal changes during the menstrual cycle in young, healthy, normal-weight women. METHODS: The study involved 52 young, healthy, normal-weight women. Anthropometric parameters, body composition and levels of plasma leptin, adiponectin, resistin, visfatin/NAMPT, omentin-1, vaspin, apelin, TNF-α, IL-6 and RBP4 in addition to serum FSH, LH, estradiol, progesterone, 17-OH progesterone, androgens, SHBG and insulin concentrations were measured during a morning in fasting state three times: between days 2-4, days 12-14 and days 24-26 of the menstrual cycle...
October 27, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28964327/performance-of-first-trimester-biochemical-markers-and-mean-arterial-pressure-in-prediction-of-early-onset-pre-eclampsia
#5
Jaana Nevalainen, Teemu Korpimaki, Heikki Kouru, Mikko Sairanen, Markku Ryynanen
OBJECTIVE: To develop a predictive risk model for early-onset pre-eclampsia (EO-PE) using maternal characteristics, combined screening markers, previously reported biomarkers for PE and mean arterial pressure (MAP). METHODS: This retrospective study was conducted at Oulu University hospital between 2006 and 2010. Maternal serum from first trimester combined screening was further analyzed for alpha fetoprotein (AFP), placental growth factor (PlGF), soluble tumor necrosis factor receptor-1 (sTNFR1), retinol binding protein-4 (RBP4), a disintegrin and metalloprotease-12 (ADAM12), soluble P-selectin (sP-selectin), follistatin like-3 (FSTL3), adiponectin, angiopoietin-2 (Ang-2) and sex hormone binding globulin (SHBG)...
October 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28931435/circulating-retinol-binding-protein-4-levels-in-nonalcoholic-fatty-liver-disease-a-systematic-review-and-meta-analysis
#6
REVIEW
Zhongwei Zhou, Hongmei Chen, Huixiang Ju, Mingzhong Sun
BACKGROUND: Retinol binding protein 4 (RBP4) is implicated in obesity, insulin resistance and type 2 diabetes mellitus that are closely associated with nonalcoholic fatty liver disease (NAFLD). However, recent investigations regarding circulating RBP4 levels in NAFLD are conflicting. This meta-analysis is to determine whether NAFLD, non-alcoholic steatohepatitis (NASH) and simple steatosis (SS) patients have altered RBP4 levels. METHODS: We performed a systematic search in PubMed, EMBASE and The Cochrane Library up until 18 March 2017, and 12 studies comprising a total of 4247 participants (2271 NAFLD patients and 1976 controls) were included in the meta-analysis...
September 20, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28924174/gene-expression-meta-analysis-in-diffuse-low-grade-glioma-and-the-corresponding-histological-subtypes
#7
Siqi Wang, Feng Jin, Wenliang Fan, Fang Liu, Yan Zou, Xuehan Hu, Haibo Xu, Ping Han
Diffuse low-grade glioma (DLGG) is a well-differentiated, slow-growing tumour with an inherent tendency to progress to high-grade glioma. The potential roles of genetic alterations in DLGG development have not yet been fully delineated. Therefore, the current study performed an integrated gene expression meta-analysis of eight independent, publicly available microarray datasets including 291 DLGGs and 83 non-glioma (NG) samples to identify gene expression signatures associated with DLGG. Using INMEX, 708 differentially expressed genes (DEGs) (385 upregulated and 323 downregulated genes) were identified in DLGG compared to NG...
September 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28895868/identification-of-novel-biomarkers-for-treatment-monitoring-in-canine-leishmaniosis-by-high-resolution-quantitative-proteomic-analysis
#8
Silvia Martinez-Subiela, Anita Horvatic, Damian Escribano, Luis Pardo-Marin, Meric Kocaturk, Vladimir Mrljak, Richard Burchmore, Jose J Ceron, Zeki Yilmaz
The objective of this study was to use the Tandem Mass Tag (TMT) isobaric label-based proteomic approach, in order to identify new potential biomarkers for the treatment monitoring of canine leishmaniosis that could not be identified by the use of gel-based techniques. For this purpose serum samples were obtained from 5 clinically diseased dogs before and one month after the treatment of canine leishmaniosis. The non-depleted serum samples were subjected to reduction, alkylation and trypsin digestion, and the resulting peptides were labeled using 6-plex TMT reagents...
September 2017: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/28888344/plasma-retinol-binding-protein-4-levels-and-the-risk-of-ischemic-stroke-among-women
#9
Pamela M Rist, Monik C Jiménez, Shelley S Tworoger, Frank B Hu, JoAnn E Manson, Qi Sun, Kathryn M Rexrode
BACKGROUND: Plasma retinol-binding protein 4 (RBP4) levels have been associated with cardiovascular risk factors and risk of coronary heart disease, but little is known about the association between RBP4 and the risk of ischemic stroke. We hypothesized that elevated RBP4 levels would be associated with an increased risk of ischemic stroke among women. METHODS: We performed a nested case-control study among women enrolled in the Nurses' Health Study who provided blood samples between 1989 and 1990 and were free of prior stroke and cancer...
September 6, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28875223/circulating-adipokines-are-associated-with-pre-eclampsia-in-women-with-type-1-diabetes
#10
Clare B Kelly, Michelle B Hookham, Jeremy Y Yu, Samuel M Lockhart, Mei Du, Alicia J Jenkins, Alison Nankervis, Kristian F Hanssen, Tore Henriksen, Satish K Garg, Samar M Hammad, James A Scardo, Christopher E Aston, Christopher C Patterson, Timothy J Lyons
AIMS/HYPOTHESIS: The incidence of pre-eclampsia, a multisystem disorder of pregnancy, is fourfold higher in type 1 diabetic than non-diabetic women; it is also increased in women with features of the metabolic syndrome and insulin resistance. In a prospective study of pregnant women with type 1 diabetes, we measured plasma levels of adipokines known to be associated with insulin resistance: leptin, fatty acid binding protein 4 (FABP4), adiponectin (total and high molecular weight [HMW]; also known as high molecular mass), retinol binding protein 4 (RBP4) and resistin and evaluated associations with the subsequent development of pre-eclampsia...
December 2017: Diabetologia
https://www.readbyqxmd.com/read/28813718/transgenic-mice-over-expressing-rbp4-have-rbp4-dependent-and-light-independent-retinal-degeneration
#11
Mei Du, Eric Phelps, Michael J Balangue, Aaron Dockins, Gennadiy Moiseyev, Younghwa Shin, Shelley Kane, Laura Otalora, Jian-Xing Ma, Rafal Farjo, Krysten M Farjo
Purpose: Transgenic mice overexpressing serum retinol-binding protein (RBP4-Tg) develop progressive retinal degeneration, characterized by microglia activation, yet the precise mechanisms underlying retinal degeneration are unclear. Previous studies showed RBP4-Tg mice have normal ocular retinoid levels, suggesting that degeneration is independent of the retinoid visual cycle or light exposure. The present study addresses whether retinal degeneration is light-dependent and RBP4-dependent by testing the effects of dark-rearing and pharmacological lowering of serum RBP4 levels, respectively...
August 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28733465/the-retinol-binding-protein-receptor-stra6-regulates-diurnal-insulin-responses
#12
Christy M Gliniak, J Mark Brown, Noa Noy
It has long been appreciated that insulin action is closely tied to circadian rhythms. However, the mechanisms that dictate diurnal insulin sensitivity in metabolic tissues are not well understood. Retinol-binding protein 4 (RBP4) has been implicated as a driver of insulin resistance in rodents and humans, and it has become an attractive drug target in type II diabetes. RBP4 is synthesized primarily in the liver where it binds retinol and transports it to tissues throughout the body. The retinol-RBP4 complex (holo-RBP) can be recognized by a cell-surface receptor known as stimulated by retinoic acid 6 (STRA6), which transports retinol into cells...
September 8, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28718514/aldehyde-dehydrogenase-1-a1-regulates-energy-metabolism-in-adipocytes-from-different-species
#13
Kefeng Yang, Christopher Adin, Qiwen Shen, Ly James Lee, Lianbo Yu, Paolo Fadda, Arpad Samogyi, Kathleen Ham, Lu Xu, Chen Gilor, Ouliana Ziouzenkova
BACKGROUND: Survival and longevity of xenotransplants depend on immune function and ability to integrate energy metabolism between cells from different species. However, mechanisms for interspecies cross talk in energy metabolism are not well understood. White adipose tissue stores energy and is capable of mobilization and dissipation of energy as heat (thermogenesis) by adipocytes expressing uncoupling protein 1 (Ucp1). Both pathways are under the control of vitamin A metabolizing enzymes...
September 2017: Xenotransplantation
https://www.readbyqxmd.com/read/28713486/concurrent-aerobic-and-resistance-training-has-anti-inflammatory-effects-and-increases-both-plasma-and-leukocyte-levels-of-igf-1-in-late-middle-aged-type-2-diabetic-patients
#14
Giosuè Annibalini, Francesco Lucertini, Deborah Agostini, Luciana Vallorani, Annamaria Gioacchini, Elena Barbieri, Michele Guescini, Lucia Casadei, Annunziata Passalia, Marta Del Sal, Giovanni Piccoli, Mauro Andreani, Ario Federici, Vilberto Stocchi
Type 2 diabetes (T2D) is an age-related chronic disease associated with metabolic dysregulation, chronic inflammation, and activation of peripheral blood mononuclear cells (PBMC). The aim of this study was to assess the effects of a concurrent exercise training program on inflammatory status and metabolic parameters of T2D patients. Sixteen male patients (age range 55-70) were randomly assigned to an intervention group (n = 8), which underwent a concurrent aerobic and resistance training program (3 times a week; 16 weeks), or to a control group, which followed physicians' usual diabetes care advices...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28713075/association-of-parental-obesity-and-diabetes-mellitus-with-circulating-adipokines-in-nonobese-nondiabetic-offspring
#15
Justin P Zachariah, Rene Quiroz, Danielle Enserro, Charlotte Andersson, John F Keaney, Lisa M Sullivan, Ramachandran S Vasan
BACKGROUND: Adipokines are implicated in the development of obesity-related traits. We hypothesized that nonobese participants without diabetes mellitus (DM) whose parents were obese or had DM would have altered circulating adipokines compared with those without parental history of these conditions. METHODS AND RESULTS: Participants in the community-based Framingham Third Generation cohort who were not obese (body mass index <30) and not diabetic with both parents in the Framingham Offspring cohort were included in this analysis (n=2034, mean age 40 years, 54% women)...
July 16, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28704853/rbp4-lp-pla2-netrin-1-signaling-regulation-of-cognitive-dysfunction-in-diabetic-nephropathy-complicated-with-silent-cerebral-infarction
#16
Danyan Chen, Xiaolong Huang, Song Lu, Huacong Deng, Hua Gan, Xiaogang Du, Tang Weixue
Aim To investigate the RBP4/Lp-PLA2/Netrin-1 signal regulation of cognitive function impairment in diabetic nephropathy patients with silent cerebral infarction (SCI). Methods One-hundred patients newly diagnosed with diabetic nephropathy patients were included. The patients were divided into SCI group and NSCI group according to the radiological data. The degrees of cognitive dysfunction were evaluated. Serum RBP4 concentrations were determined by ELISA and protein expressions of Lp-PLA2 and Netrin-1 were determined by Western Blot...
September 2017: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/28689994/rbp4-stra6-pathway-drives-cancer-stem-cell-maintenance-and-mediates-high-fat-diet-induced-colon-carcinogenesis
#17
Sheelarani Karunanithi, Liraz Levi, Jennifer DeVecchio, George Karagkounis, Ofer Reizes, Justin D Lathia, Matthew F Kalady, Noa Noy
The transmembrane protein, STRA6, functions as a vitamin A transporter and a cytokine receptor when activated by vitamin A-bound serum retinol binding protein 4 (RBP4). STRA6 activation transduces a JAK2-STAT3 signaling cascade and promotes tumorigenesis in a xenograft mouse model of colon cancer. We show here that RBP4 and STRA6 expression is associated with poor oncologic prognosis. Downregulating STRA6 or RBP4 in colon cancer cells decreased the fraction of cancer stem cells and their sphere and tumor initiation frequency...
August 8, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28675715/identification-of-potential-biomarkers-for-systemic-lupus-erythematosus-diagnosis-using-two-dimensional-differential-gel-electrophoresis-2d-dige-and-mass-spectrometry
#18
Tamara Aparecida Reis Ferreira, Hélida Monteiro de Andrade, Paulo Madureira de Pádua, Maria das Graças Carvalho, Simone da Fonseca Pires, Ivana Helena Rocha Oliveira, Bruna Soares Souza Lima, Luis Carlos Fialho Júnior, Walter Batista Cicarini, Donat Alexander Chapeourouge, Jonas Henrique Perales, Tânia Mara Pinto Dabés Guimarães, Vicente de Paulo Coelho Peixoto de Toledo
Systemic lupus erythematosus (SLE) is an autoimmune disease of the connective tissue with a large spectrum of clinical manifestations. Immune deregulation leads to autoantibody and immune complexes overproduction, complement activation, and persistent tissue inflammation. Considering that the current diagnosis depends on the interpretation of the complex criteria established by the American College of Rheumatology and that the disease course is characterized by unpredictable activations and remissions, each patient develops different manifestations, and therefore, the discovery of specific biomarkers is urgently required...
June 2017: Autoimmunity
https://www.readbyqxmd.com/read/28668878/prognostic-importance-of-vitamins-a-e-and-retinol-binding-protein-4-in-renal-cell-carcinoma-patients
#19
Roman Sobotka, Otakar Čapoun, Marta Kalousová, Tomáš Hanuš, Tomáš Zima, Milada Koštířová, Viktor Soukup
AIM: To assess the prognostic importance of serum levels of retinol, retinol-binding protein 4 (RBP4) and vitamin E at the time of diagnosis in patients with renal cell carcinoma (RCC). PATIENTS AND METHODS: In this prospective study, in a cohort of 102 renal cell carcinoma patients, relationships between serum levels of the aforementioned markers and recurrence-free survival (RFS), overall survival (OS), as well as cancer-specific survival (CSS), were evaluated...
July 2017: Anticancer Research
https://www.readbyqxmd.com/read/28648555/comparison-of-plasma-pigment-epithelium-derived-factor-pedf-retinol-binding-protein-4-rbp-4-chitinase-3-like-protein-1-ykl-40-and-brain-derived-neurotrophic-factor-bdnf-for-the-identification-of-insulin-resistance
#20
F J K Toloza, M C Pérez-Matos, M L Ricardo-Silgado, M C Morales-Álvarez, J O Mantilla-Rivas, J A Pinzón-Cortés, M Pérez-Mayorga, M L Arévalo-García, G Tolosa-González, C O Mendivil
AIMS: To evaluate and compare the association of four potential insulin resistance (IR) biomarkers (pigment-epithelium-derived factor [PEDF], retinol-binding-protein-4 [RBP-4], chitinase-3-like protein 1 [YKL-40] and brain-derived neurotrophic factor [BDNF]) with objective measures of IR. METHODS: We studied 81 subjects with different metabolic profiles. All participants underwent a 5-point OGTT with calculation of multiple IR indexes. A subgroup of 21 participants additionally underwent a hyperinsulinemic-euglycemic clamp...
June 9, 2017: Journal of Diabetes and its Complications
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