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https://www.readbyqxmd.com/read/28902623/chronic-endurance-exercise-antagonizes-the-cardiac-ucp2-and-ucp3-protein-up-regulation-induced-by-nandrolone-decanoate
#1
Gholamreza Bayat, Mohammad Javan, Azadeh Khalili, Fatemeh Safari, Saeed Shokri, Sohrab Hajizadeh
BACKGROUND: Several lines of evidence revealed that chronic treatment of anabolic androgenic steroids (AASs) is accompanied with some cardiovascular side effects and in addition they also negatively mask the beneficial effects of exercise training on cardiac performance. METHODS: The present study examined whether the nandrolone decanoate (ND)-induced cardiac effects were mediated by changing the cardiac uncoupling protein 2 (UCP2) and 3 (UCP3) expression. Five groups of male wistar-albino rats including sedentary control (SC), sedentary vehicle (SV), sedentary nandrolone decanoate (SND), exercise control (EC), and exercise nandrolone decanoate (END) were used...
September 13, 2017: Journal of Basic and Clinical Physiology and Pharmacology
https://www.readbyqxmd.com/read/28894292/partitioning-of-adipose-lipid-metabolism-by-altered-expression-and-function-of-ppar-isoforms-after-bariatric-surgery
#2
C Jahansouz, H Xu, A V Hertzel, S Kizy, K A Steen, R Foncea, F J Serrot, N Kvalheim, G Luthra, K Ewing, D B Leslie, S Ikramuddin, D A Bernlohr
BACKGROUND: Bariatric surgery remains the most effective treatment for reducing adiposity and eliminating type 2 diabetes; however, the mechanism(s) responsible have remained elusive. Peroxisome proliferator-activated receptors (PPAR) encompass a family of nuclear hormone receptors that upon activation exert control of lipid metabolism, glucose regulation and inflammation. Their role in adipose tissue following bariatric surgery remains undefined. MATERIALS AND METHODS: Subcutaneous adipose tissue biopsies and serum were obtained and evaluated from time of surgery and on postoperative day 7 in patients randomized to Roux-en-Y gastric bypass (n=13) or matched caloric restriction (n=14), as well as patients undergoing vertical sleeve gastrectomy (n=33)...
August 14, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28875237/uncoupling-protein-2-inhibition-exacerbates-glucose-fluctuation-mediated-neuronal-effects
#3
Susana Cardoso, Raquel M Seiça, Paula I Moreira
Though glucose fluctuations have been considered as an adverse factor for the development of several diabetes-related complications, their impact in the central nervous system is still not fully elucidated. This study was conducted to evaluate the responses of neuronal cells to different glycemic exposures alongside to elucidate the role of uncoupling protein 2 (UCP2) in regulating such responses. To achieve our goals, primary cortical neurons were submitted to constant high (HG)/low (LG) or glucose level variations (GVs), and the pharmacological inhibition of UCP2 activity was performed using genipin...
September 5, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/28859657/fto-associations-with-obesity-and-telomere-length
#4
REVIEW
Yuling Zhou, Brett D Hambly, Craig S McLachlan
This review examines the biology of the Fat mass- and obesity-associated gene (FTO), and the implications of genetic association of FTO SNPs with obesity and genetic aging. Notably, we focus on the role of FTO in the regulation of methylation status as possible regulators of weight gain and genetic aging. We present a theoretical review of the FTO gene with a particular emphasis on associations with UCP2, AMPK, RBL2, IRX3, CUX1, mTORC1 and hormones involved in hunger regulation. These associations are important for dietary behavior regulation and cellular nutrient sensing via amino acids...
September 1, 2017: Journal of Biomedical Science
https://www.readbyqxmd.com/read/28855921/diagnosis-and-treatment-of-hyperinsulinaemic-hypoglycaemia-and-its-implications-for-paediatric-endocrinology
#5
REVIEW
Huseyin Demirbilek, Sofia A Rahman, Gonul Gulal Buyukyilmaz, Khalid Hussain
Glucose homeostasis requires appropriate and synchronous coordination of metabolic events and hormonal activities to keep plasma glucose concentrations in a narrow range of 3.5-5.5 mmol/L. Insulin, the only glucose lowering hormone secreted from pancreatic β-cells, plays the key role in glucose homeostasis. Insulin release from pancreatic β-cells is mainly regulated by intracellular ATP-generating metabolic pathways. Hyperinsulinaemic hypoglycaemia (HH), the most common cause of severe and persistent hypoglycaemia in neonates and children, is the inappropriate secretion of insulin which occurs despite low plasma glucose levels leading to severe and persistent hypoketotic hypoglycaemia...
2017: International Journal of Pediatric Endocrinology
https://www.readbyqxmd.com/read/28792088/the-anti-proliferation-effects-of-oleanolic-acid-on-a7r5-cells-role-of-ucp2-and-downstream-fgf-2-p53-tsp-1
#6
Yantao Han, Qixiao Jiang, Yu Wang, Wenqian Li, Min Geng, Zhiwu Han, Xuehong Chen
Vascular smooth muscle cell (VSMC) proliferation is a major contributor to atherosclerosis. This study investigated the inhibitatory effects of oleanolic acid (OA) against oxidized low density lipoprotein (ox-LDL) induced VSMC proliferation in A7r5 cells and explored underlying molecular mechanism. The cell proliferation was quantified with cell counting kit-8 (CCK-8), in which ox-LDL significantly increased A7r5 cells proliferation, while OA pretreatment effectively alleviated such changes without inducing overt cytotoxicity, as indicated by lactate dehydrogenase (LDH) assay...
August 9, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28771482/uncoupling-protein-2-haplotype-does-not-affect-human-brain-structure-and-function-in-a-sample-of-community-dwelling-older-adults
#7
Verena Heise, Enikő Zsoldos, Sana Suri, Claire Sexton, Anya Topiwala, Nicola Filippini, Abda Mahmood, Charlotte L Allan, Archana Singh-Manoux, Mika Kivimäki, Clare E Mackay, Klaus P Ebmeier
Uncoupling protein 2 (UCP2) is a mitochondrial membrane protein that plays a role in uncoupling electron transport from adenosine triphosphate (ATP) formation. Polymorphisms of the UCP2 gene in humans affect protein expression and function and have been linked to survival into old age. Since UCP2 is expressed in several brain regions, we investigated in this study whether UCP2 polymorphisms might 1) affect occurrence of neurodegenerative or mental health disorders and 2) affect measures of brain structure and function...
2017: PloS One
https://www.readbyqxmd.com/read/28770830/resveratrol-alleviates-diabetic-cardiomyopathy-in-rats-by-improving-mitochondrial-function-through-pgc-1%C3%AE-deacetylation
#8
Wei-Jin Fang, Chun-Jiang Wang, Yang He, Yu-Lu Zhou, Xiang-Dong Peng, Shi-Kun Liu
Recent evidence shows that resveratrol (RSV) may ameliorate high-glucose-induced cardiac oxidative stress, mitochondrial dysfunction and myocardial fibrosis in diabetes. However, the mechanisms by which RSV regu¬lates mitochondrial function in diabetic cardiomyopathy have not been fully elucidated. Mitochondrial dysfunction contributes to cardiac dysfunction in diabetic patients, which is associated with dysregulation of peroxisome proliferator-activated receptor gamma coactivator-1α (PGC-1α). In this study we examined whether resveratrol alleviated cardiac dysfunction in diabetes by improving mitochondrial function via SIRT1-mediated PGC-1α deacetylation...
August 3, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/28765172/leishmania-donovani-inhibits-inflammasome-dependent-macrophage-activation-by-exploiting-the-negative-regulatory-proteins-a20-and-ucp2
#9
Anand Kumar Gupta, Kuntal Ghosh, Shreyasi Palit, Jayita Barua, Pijush K Das, Anindita Ukil
In visceral leishmaniasis, we found that the antileishmanial drug Amp B produces a higher level of IL-1β over the infected control. Moreover, administering anti-IL-1β antibody to infected Amp B-treated mice showed significantly less parasite clearance. Investigation revealed that Leishmania inhibits stimuli-induced expression of a multiprotein signaling platform, NLRP3 inflammasome, which in turn inhibits caspase-1 activation mediated maturation of IL-1β from its pro form. Attenuation of NLRP3 and pro-IL-1β in infection was found to result from decreased NF-κB activity...
August 1, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28755631/upregulation-of-ucp2-in-beta-cells-confers-partial-protection-against-both-oxidative-stress-and-glucotoxicity
#10
Ning Li, Melis Karaca, Pierre Maechler
Deterioration of pancreatic beta-cells plays a critical role in the development of type 2 diabetes. Among the various stressors contributing to these deleterious effects, glucotoxicity and superoxides have been proposed as major players. In this context, the mitochondrial uncoupling protein UCP2 is regularly associated with the stress response. In the present study, we tested the effects of UCP2 upregulation in mouse islets with beta-cell specific overexpression of UCP2 (RIP-UCP2). Islets were subjected to both chronic glucotoxicity (7 days at 30mM glucose) and acute oxidative stress (200µM H2O2 for 10min)...
July 21, 2017: Redox Biology
https://www.readbyqxmd.com/read/28737710/cytoprotective-effect-of-the-ucp2-sirt3-signaling-pathway-by-decreasing-mitochondrial-oxidative-stress-on-cerebral-ischemia-reperfusion-injury
#11
REVIEW
Jing Su, Jie Liu, Xiao-Yu Yan, Yong Zhang, Juan-Juan Zhang, Li-Chao Zhang, Lian-Kun Sun
Recovered blood supply after cerebral ischemia for a certain period of time fails to restore brain function, with more severe dysfunctional problems developing, called cerebral ischemia-reperfusion injury (CIR). CIR involves several extremely complex pathophysiological processes in which the interactions between key factors at various stages have not been fully elucidated. Mitochondrial dysfunction is one of the most important mechanisms of CIR. The mitochondrial deacetylase, sirtuin 3 (SIRT3), can inhibit mitochondrial oxidative stress by deacetylation, to maintain mitochondrial stability...
July 24, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28723637/increasing-ucp2-expression-and-decreasing-nox1-4-expression-maintain-chondrocyte-phenotype-by-reducing-reactive-oxygen-species-production
#12
Yansong Miao, Yuefu Dong, Ping Huang, Xiang Zhao, Zhenyu Huang, Jufang Yao, He Li, Qingrong Xu
The aim of this study is to demonstrate that improving the mitochondrial function can inhibite the loss of chondrocyte phenotype by regulating the expression of uncoupling protein 2(UCP2) and NADPH oxidase1/4(NOX1/4) to reduce the production of reactive oxygen species(ROS). The effects of mitochondrial biogenesis "master regular" peroxisome proliferator-activated receptor gamma coactivator-1α (PGC-1α), mitochondrial transcriptional factor A (TFAM), UCP2, and NOX1/4 on chondrocyte phenotype was examined. It was found that when the chondrocyte phenotype was lost, PGC-1α, UCP2, and TFAM expression decreased, while NOX1/4 expression increased...
July 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/28704105/role-of-the-polymorphisms-of-uncoupling-protein-genes-in-childhood-obesity-and-their-association-with-obesity-related-disturbances
#13
Ali Gul, Ömer Ateş, Samet Özer, Tuba Kasap, Emel Ensari, Osman Demir, Ergün Sönmezgöz
BACKGROUND: Obesity, one of the most common disorders observed in clinical practice, has been associated with energy metabolism-related protein genes such as uncoupling proteins (UCPs). Herein, we evaluated UCPs as candidate genes for obesity and its morbidities. METHODS: A total of 268 obese and 185 nonobese children and adolescents were enrolled in this study. To determine dyslipidemia, hypertension, and insulin resistance, laboratory tests were derived from fasting blood samples...
September 2017: Genetic Testing and Molecular Biomarkers
https://www.readbyqxmd.com/read/28702331/uncoupling-protein-2-regulates-daily-rhythms-of-insulin-secretion-capacity-in-min6-cells-and-isolated-islets-from-male-mice
#14
Nivedita Seshadri, Michael E Jonasson, Kristin L Hunt, Bo Xiang, Steven Cooper, Michael B Wheeler, Vernon W Dolinsky, Christine A Doucette
OBJECTIVE: Upregulation of uncoupling protein 2 (UCP2) is associated with impaired glucose-stimulated insulin secretion (GSIS), which is thought to be an important contributor to pathological β cell failure in obesity and type 2 diabetes (T2D); however, the physiological function of UCP2 in the β cell remains undefined. It has been suggested, but not yet tested, that UCP2 plays a physiological role in β cells by coordinating insulin secretion capacity with anticipated fluctuating nutrient supply, such that upregulation of UCP2 in the inactive/fasted state inhibits GSIS as a mechanism to prevent hypoglycemia...
July 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/28696376/lack-of-additive-effects-of-resveratrol-and-energy-restriction-in-the-treatment-of-hepatic-steatosis-in-rats
#15
Iñaki Milton-Laskibar, Leixuri Aguirre, Alfredo Fernández-Quintela, Anabela P Rolo, João Soeiro Teodoro, Carlos M Palmeira, María P Portillo
The aims of the present study were to analyze the effect of resveratrol on liver steatosis in obese rats, to compare the effects induced by resveratrol and energy restriction and to research potential additive effects. Rats were initially fed a high-fat high-sucrose diet for six weeks and then allocated in four experimental groups fed a standard diet: a control group, a resveratrol-treated group, an energy restricted group and a group submitted to energy restriction and treated with resveratrol. We measured liver triacylglycerols, transaminases, FAS, MTP, CPT1a, CS, COX, SDH and ATP synthase activities, FATP2/FATP5, DGAT2, PPARα, SIRT1, UCP2 protein expressions, ACC and AMPK phosphorylation and PGC1α deacetylation...
July 11, 2017: Nutrients
https://www.readbyqxmd.com/read/28694839/gene-expression-profiling-of-whole-blood-cells-supports-a-more-efficient-mitochondrial-respiration-in-hypoxia-challenged-gilthead-sea-bream-sparus-aurata
#16
Juan Antonio Martos-Sitcha, Azucena Bermejo-Nogales, Josep Alvar Calduch-Giner, Jaume Pérez-Sánchez
BACKGROUND: Acclimation to abiotic challenges, including decreases in O2 availability, requires physiological and anatomical phenotyping to accommodate the organism to the environmental conditions. The retention of a nucleus and functional mitochondria in mature fish red blood cells makes blood a promising tissue to analyse the transcriptome and metabolic responses of hypoxia-challenged fish in an integrative and non-invasive manner. METHODS: Juvenile gilthead sea bream (Sparus aurata) were reared at 20-21 °C under normoxic conditions (> 85% O2 saturation) followed by exposure to a gradual decrease in water O2 concentration to 3...
2017: Frontiers in Zoology
https://www.readbyqxmd.com/read/28693257/ucp2-expression-may-represent-a-predictive-marker-of-neoadjuvant-chemotherapy-effectiveness-for-locally-advanced-uterine-cervical-cancer
#17
Kenji Imai, Takeshi Fukuda, Takuma Wada, Masaru Kawanishi, Reiko Tasaka, Tomoyo Yasui, Toshiyuki Sumi
Concurrent chemoradiotherapy is the standard treatment for locally advanced uterine cervical cancer. However, effective neoadjuvant chemotherapy (NAC) can reduce tumor size and facilitate hysterectomy for locally advanced uterine cervical cancer. NAC treatment could improve the prognosis of patients with locally advanced cervical cancer. However, if NAC is ineffective, radiotherapy must be pursued. This causes a delay in initiating the core treatment and results in a worse prognosis. Therefore, the identification of predictive markers of whether NAC is likely to be effective for the treatment of locally advanced uterine cervical cancer could improve patient prognosis...
July 2017: Oncology Letters
https://www.readbyqxmd.com/read/28686191/the-gene-lifestyle-interaction-on-leptin-sensitivity-and-lipid-metabolism-in-adults-a-population-based-study
#18
Harry Freitag Luglio, Dian Caturini Sulistyoningrum, Emy Huriyati, Yi Yi Lee, Wan Abdul Manan Wan Muda
BACKGROUND: Obesity has been associated with leptin resistance and this might be caused by genetic factors. The aim of this study was to investigate the gene-lifestyle interaction between -866G/A UCP2 (uncoupling protein 2) gene polymorphism, dietary intake and leptin in a population based study. METHODS: This is a cross sectional study conducted in adults living at urban area of Yogyakarta, Indonesia. Data of adiposity, lifestyle, triglyceride, high density lipoprotein (HDL) cholesterol, leptin and UCP2 gene polymorphism were obtained in 380 men and female adults...
July 7, 2017: Nutrients
https://www.readbyqxmd.com/read/28659758/chronic-oxidative-stress-mitochondrial-dysfunction-nrf2-activation-and-inflammation-in-the-hippocampus-accompany-heightened-systemic-inflammation-and-oxidative-stress-in-an-animal-model-of-gulf-war-illness
#19
Geetha A Shetty, Bharathi Hattiangady, Dinesh Upadhya, Adrian Bates, Sahithi Attaluri, Bing Shuai, Maheedhar Kodali, Ashok K Shetty
Memory and mood dysfunction are the key symptoms of Gulf war illness (GWI), a lingering multi-symptom ailment afflicting >200,000 veterans who served in the Persian Gulf War-1. Research probing the source of the disease has demonstrated that concomitant exposures to anti-nerve gas agent pyridostigmine bromide (PB), pesticides, and war-related stress are among the chief causes of GWI. Indeed, exposures to GWI-related chemicals (GWIR-Cs) and mild stress in animal models cause memory and mood impairments alongside reduced neurogenesis and chronic low-level inflammation in the hippocampus...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28640254/reduced-brain-ucp2-expression-mediated-by-microrna-503-contributes-to-increased-stroke-susceptibility-in-the-high-salt-fed-stroke-prone-spontaneously-hypertensive-rat
#20
Speranza Rubattu, Rosita Stanzione, Franca Bianchi, Maria Cotugno, Maurizio Forte, Floriana Della Ragione, Salvatore Fioriniello, Maurizio D'Esposito, Simona Marchitti, Michele Madonna, Simona Baima, Giorgio Morelli, Sebastiano Sciarretta, Luigi Sironi, Paolo Gelosa, Massimo Volpe
UCP2 maps nearby the lod score peak of STR1-stroke QTL in the SHRSP rat strain. We explored the potential contribution of UCP2 to the high-salt diet (JD)-dependent increased stroke susceptibility of SHRSP. Male SHRSP, SHRSR, two reciprocal SHRSR/SHRSP-STR1/QTL stroke congenic lines received JD for 4 weeks to detect brain UCP2 gene/protein modulation as compared with regular diet (RD). Brains were also analyzed for NF-κB protein expression, oxidative stress level and UCP2-targeted microRNAs expression level...
June 22, 2017: Cell Death & Disease
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