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https://www.readbyqxmd.com/read/27911275/microrna-25-targets-pkc%C3%AE-and-protects-osteoblastic-cells-from-dexamethasone-via-activating-ampk-signaling
#1
Jian-Bo Fan, Wei Liu, Xin-Hui Zhu, Hong Yi, Sheng-Yu Cui, Jian-Ning Zhao, Zhi-Ming Cui
AMP-activated protein kinase (AMPK) activation could protect osteoblasts from dexamethasone (Dex). This study aims to provoke AMPK activation via microRNA downregulation of its negative regulator protein kinase C ζ (PKCζ). Results show that microRNA-25-5p (miR-25-5p) targets PKCζ's 3' untranslated regions (UTRs). Forced-expression of miR-25 downregulated PKCζ and activated AMPK in human osteoblastic cells (OB-6 and hFOB1.19 lines), which thereafter protected cells from Dex. Reversely, expression of antagomiR-25, the miR-25 inhibitor, upregulated PKCζ and inhibited AMPK activation, exacerbating Dex damages...
November 29, 2016: Oncotarget
https://www.readbyqxmd.com/read/27907040/the-role-of-reactive-oxygen-species-in-%C3%AE-adrenergic-signaling-in-cardiomyocytes-from-mice-with-the-metabolic-syndrome
#2
Monica Llano-Diez, Jon Sinclair, Takashi Yamada, Mei Zong, Jeremy Fauconnier, Shi-Jin Zhang, Abram Katz, Kent Jardemark, Håkan Westerblad, Daniel C Andersson, Johanna T Lanner
The metabolic syndrome is associated with prolonged stress and hyperactivity of the sympathetic nervous system and afflicted subjects are prone to develop cardiovascular disease. Under normal conditions, the cardiomyocyte response to acute β-adrenergic stimulation partly depends on increased production of reactive oxygen species (ROS). Here we investigated the interplay between beta-adrenergic signaling, ROS and cardiac contractility using freshly isolated cardiomyocytes and whole hearts from two mouse models with the metabolic syndrome (high-fat diet and ob/ob mice)...
2016: PloS One
https://www.readbyqxmd.com/read/27905126/ameliorating-effects-of-fennel-and-cumin-extracts-on-sperm-quality-and-spermatogenic-cells-apoptosis-by-inducing-weight-loss-and-reducing-leptin-concentration-in-diet-induced-obese-rats
#3
R Nejatbakhsh, S Riyahi, A Farrokhi, S Rostamkhani, S Mahmazi, A Yazdinezhad, M Kazemi, S Shokri
This study was established a model of obesity to estimate the impact of fennel and cumin as anti-obesity extracts on body weight, body mass index (BMI), food consumption, leptin concentration, sperm quality and testis architecture to determine the reversibility of reproductive function of obese animals. Male rats were randomly assigned to either a normal or high-fat diet for 8 weeks. Then, we divided 56 adult rats into seven groups: control (CO); obesity (OB); fennel 100 and 200 mg/kg; cumin 50 and 100 mg/kg; and fennel 100 mg/kg plus cumin 50 mg/kg...
November 30, 2016: Andrologia
https://www.readbyqxmd.com/read/27904677/an-engineered-fgf21-variant-ly2405319-can-prevent-non-alcoholic-steatohepatitis-by-enhancing-hepatic-mitochondrial-function
#4
Ju Hee Lee, Yea Eun Kang, Joon Young Chang, Ki Cheol Park, Hyeon-Woo Kim, Jung Tae Kim, Hyun Jin Kim, Hyon-Seung Yi, Minho Shong, Hyo Kyun Chung, Koon Soon Kim
Non-alcoholic fatty liver disease (NAFLD) is a prevalent obesity-related disease that affects large populations throughout the world due to excessive calorie intake and an increasingly sedentary lifestyle. Fibroblast growth factor 21 (FGF21) has recently emerged as a promising therapeutic candidate for the treatment of obesity and diabetes. FGF21 is a starvation-induced pleiotropic hormone with various beneficial metabolic effects, and pharmacological treatment in rodents has been shown to improve insulin sensitivity and decrease simple fatty liver disease...
2016: American Journal of Translational Research
https://www.readbyqxmd.com/read/27900263/islet-chrebp-%C3%AE-is-increased-in-diabetes-and-controls-chrebp-%C3%AE-and-glucose-induced-gene-expression-via-a-negative-feedback-loop
#5
Gu Jing, Junqin Chen, Guanlan Xu, Anath Shalev
OBJECTIVE: Carbohydrate-response element-binding protein (ChREBP) is the major transcription factor conferring glucose-induced gene expression in pancreatic islets, liver and adipose tissue. Recently, a novel ChREBP isoform, ChREBP-β, was identified in adipose tissue and found to be also expressed in islets and involved in glucose-induced beta cell proliferation. However, the physiological function of this less abundant β-isoform in the islet, and in diabetes, is largely unknown. The aims of the present study, therefore, were to determine how diabetes affects ChREBP-β and elucidate its physiological role in pancreatic beta cells...
December 2016: Molecular Metabolism
https://www.readbyqxmd.com/read/27896669/detection-of-autoantibodies-to-dsf70-ledgfp75-in-mexican-hispanics-using-multiple-complementary-assay-platforms
#6
Mónica Vázquez-Del Mercado, Eduardo Gómez-Bañuelos, Rosa Elena Navarro-Hernández, Oscar Pizano-Martinez, Adan Saldaña-Millán, Efrain Chavarria-Avila, Lorena Gonzalez-Rosas, Lilia Andrade-Ortega, Miguel Angel Saavedra, Olga Lidia Vera-Lastra, Luis Javier Jara, Gabriel Medrano-Ramírez, Claudia Cruz-Reyes, Ignacio García-De la Torre, Marta Escarra-Senmarti, Lisiane Maria Enriconi-Dos Anjos, Anamika Basu, Roger Albesa, Michael Mahler, Carlos A Casiano
PURPOSE: Antinuclear autoantibodies (ANA) targeting the dense fine speckled antigen DFS70, also known as lens epithelium-derived growth factor p75 (LEDGF/p75), are attracting attention due to their low frequency in systemic rheumatic diseases but increased frequency in clinical laboratory referrals and healthy individuals (HI). These ANA specifically recognize the stress protein DFS70/LEDGFp75, implicated in cancer, HIV-AIDS, and inflammation. While their frequency has been investigated in various ethnic populations, there is little information on their frequency among Hispanics/Latinos...
December 2017: Auto- Immunity Highlights
https://www.readbyqxmd.com/read/27896396/metabolic-profiling-of-ob-ob-mouse-fatty-liver-using-hr-mas-1-h-nmr-combined-with-gene-expression-analysis-reveals-alterations-in-betaine-metabolism-and-the-transsulfuration-pathway
#7
Mikheil Gogiashvili, Karolina Edlund, Kathrin Gianmoena, Rosemarie Marchan, Alexander Brik, Jan T Andersson, Jörg Lambert, Katrin Madjar, Birte Hellwig, Jörg Rahnenführer, Jan G Hengstler, Roland Hergenröder, Cristina Cadenas
Metabolic perturbations resulting from excessive hepatic fat accumulation are poorly understood. Thus, in this study, leptin-deficient ob/ob mice, a mouse model of fatty liver disease, were used to investigate metabolic alterations in more detail. Metabolites were quantified in intact liver tissues of ob/ob (n = 8) and control (n = 8) mice using high-resolution magic angle spinning (HR-MAS) (1)H-NMR. In addition, after demonstrating that HR-MAS (1)H-NMR does not affect RNA integrity, transcriptional changes were measured by quantitative real-time PCR on RNA extracted from the same specimens after HR-MAS (1)H-NMR measurements...
November 28, 2016: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/27893950/the-relationship-between-the-supply-of-primary-care-physicians-and-measures-of-breast-health-service-use
#8
Janis Barry
BACKGROUND: To investigate whether women are more likely to report receipt of a mammography recommendation from a doctor or mammography use if they reside in primary care service areas (PCSAs) having a greater number of clinically active primary care physicians. MATERIALS AND METHODS: The analysis used a nationally representative sample of women, aged 40 years and above (n = 10,706 unweighted respondents), extracted from the 2005 National Health Interview Survey...
November 28, 2016: Journal of Women's Health
https://www.readbyqxmd.com/read/27892794/effects-of-repeated-9-and-30-day-exposure-to-extremely-low-frequency-electromagnetic-fields-on-social-recognition-behavior-and-estrogen-receptors-expression-in-olfactory-bulb-of-wistar-female-rats
#9
C Bernal-Mondragón, V Arriaga-Avila, E Martínez-Abundis, B Barrera-Mera, O Mercado-Gómez, R Guevara-Guzmán
OBJECTIVE: We investigated the short- and long-term effects of extremely low-frequency electromagnetic fields (EMF) on social recognition behavior and expression of α- and β-estrogen receptors (ER). METHODS: Rats were exposed to 60-Hz electromagnetic fields for 9 or 30 days and tested for social recognition behavior. Immunohistochemistry and western blot assays were performed to evaluate α- and β-ER expression in the olfactory bulb of intact, ovariectomized (OVX), and ovariectomized+estradiol (E2) replacement (OVX+E2)...
November 28, 2016: Neurological Research
https://www.readbyqxmd.com/read/27889607/leptin-ob-r-signaling-is-elevated-in-mice-with-sj%C3%A3-gren-s-syndrome-and-is-implicated-in-disease-pathogenesis
#10
Ting Xu, Wen Xie, Yingchun Ma, Shiliang Zhou, Lu Zhang, Jinyun Chen, Mingyuan Cai, Rurong Sun, Peirong Zhang, Shaobo Yu, Zheng Xu, Wanlan Jiang, Min Wu
Sjögren's syndrome (SjS) is a systemic autoimmune disease resulting in a severe dry mouth and dry eyes. Currently, care for patients with SjS is palliative, as no established therapeutics target the disease directly, and its pathogenetic mechanisms are uncertain. Leptin activates B cells to induce the secretion of proinflammatory and anti-inflammatory cytokines and is elevated in several autoimmune diseases. In this study, we found the expression of leptin and its receptor OB-R in mouse models of SjS are elevated both locally and systemically during SjS progression...
November 23, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27889450/rpa-mediates-recruitment-of-mrx-to-forks-and-double-strand-breaks-to-hold-sister-chromatids-together
#11
Andrew Seeber, Anna Maria Hegnauer, Nicole Hustedt, Ishan Deshpande, Jérôme Poli, Jan Eglinger, Philippe Pasero, Heinz Gut, Miki Shinohara, Karl-Peter Hopfner, Kenji Shimada, Susan M Gasser
The Mre11-Rad50-Xrs2 (MRX) complex is related to SMC complexes that form rings capable of holding two distinct DNA strands together. MRX functions at stalled replication forks and double-strand breaks (DSBs). A mutation in the N-terminal OB fold of the 70 kDa subunit of yeast replication protein A, rfa1-t11, abrogates MRX recruitment to both types of DNA damage. The rfa1 mutation is functionally epistatic with loss of any of the MRX subunits for survival of replication fork stress or DSB recovery, although it does not compromise end-resection...
November 18, 2016: Molecular Cell
https://www.readbyqxmd.com/read/27884961/therapeutic-silencing-of-fat-specific-protein-27-improves-glycemic-control-in-mouse-models-of-obesity-and-insulin-resistance
#12
Cédric Langhi, Noemí Arias, Ananthi Rajamoorthi, Jeannine Basta, Richard G Lee, Ángel Baldán
Obesity is a component of the metabolic syndrome, mechanistically linked to diabetes, fatty liver disease, and cardiovascular disease. Proteins that regulate the metabolic fate of intracellular lipid droplets are potential therapeutic candidates to treat obesity and its related consequences. CIDEC (cell death-inducing DFFA-like effector C), also known in mice as Fsp27 (fat-specific protein 27), is a lipid droplet-associated protein that prevents lipid mobilization and promotes intracellular lipid storage. The consequences of complete loss of FSP27 on hepatic metabolism and on insulin resistance are controversial, as both healthy and deleterious lipodystrophic phenotypes have been reported in Fsp27-/- mice...
November 24, 2016: Journal of Lipid Research
https://www.readbyqxmd.com/read/27883238/striking-doping-effects-on-thermal-methane-activation-mediated-by-the-heteronuclear-metal-oxides-xalo%C3%A2-%C3%A2-x-v-nb-and-ta
#13
Xiao-Nan Wu, Jilai Li, Maria Schlangen, Shaodong Zhou, Patricio González-Navarrete, Helmut Schwarz
The thermal reactivity of the heteronuclear metal-oxide cluster cations [XAlO₄]·+ (X = V, Nb and Ta) towards methane has been studied by using mass spectrometry in conjunction with quantum mechanical calculations. Experimentally, hydrogen-atom transfer (HAT) from methane is mediated by all the three oxide clusters at ambient conditions. However, [VAlO₄]·+ is unique in that this cluster transforms directly methane into formaldehyde. The absence of this reaction for the Nb and Ta analogues demonstrates a striking doping effect on the chemoselectivity in the conversion of methane...
November 24, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27881930/psychological-consequences-of-childhood-obesity-psychiatric-comorbidity-and-prevention
#14
REVIEW
Jean Rankin, Lynsay Matthews, Stephen Cobley, Ahreum Han, Ross Sanders, Huw D Wiltshire, Julien S Baker
Childhood obesity is one of the most serious public health challenges of the 21st century with far-reaching and enduring adverse consequences for health outcomes. Over 42 million children <5 years worldwide are estimated to be overweight (OW) or obese (OB), and if current trends continue, then an estimated 70 million children will be OW or OB by 2025. The purpose of this review was to focus on psychiatric, psychological, and psychosocial consequences of childhood obesity (OBy) to include a broad range of international studies...
2016: Adolescent Health, Medicine and Therapeutics
https://www.readbyqxmd.com/read/27876761/early-infant-adipose-deposition-is-positively-associated-with-the-n-6-to-n-3-fatty-acid-ratio-in-human-milk-independent-of-maternal-bmi
#15
M C Rudolph, B E Young, D J Lemas, C E Palmer, T L Hernandez, L A Barbour, J E Friedman, N F Krebs, P S MacLean
BACKGROUND/OBJECTIVES: Excessive infant weight gain in the first 6-months of life is a powerful predictor of childhood obesity and related health risks. In mice, omega-6 fatty acids (FA) serve as potent ligands driving adipogenesis during early development. The ratio of omega-6 relative to omega-3 (n-6/n-3) FA in human milk (HM) has increased 3-fold over the last 30 years, but the impact of this shift on infant adipose development remains undetermined. This study investigated how maternal obesity and maternal dietary FA (as reflected in maternal red blood cells (RBC) composition) influenced HM n-6 and n-3 FAs, and whether the HM n-6/n-3 ratio was associated with changes in infant adipose deposition between 2-weeks and 4-months postpartum...
November 23, 2016: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/27876519/the-effect-of-body-mass-index-on-major-outcomes-after-vascular-surgery
#16
REVIEW
George Galyfos, Georgios I Geropapas, Stavros Kerasidis, Argiri Sianou, Fragiska Sigala, Konstantinos Filis
OBJECTIVE: Obesity has been associated with an increased risk for cardiovascular morbidity and mortality, although pooled evidence in patients undergoing vascular surgery are lacking. The aim of this systematic review was to evaluate the effect of body mass index (BMI) on major postoperative outcomes in patients undergoing vascular surgery. METHODS: A systematic literature review conforming to established criteria to identify eligible articles published before May 2016 was conducted...
November 19, 2016: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/27873461/human-peripheral-blood-mononuclear-cell-in-vitro-system-to-test-the-efficacy-of-food-bioactive-compounds-effects-of-polyunsaturated-fatty-acids-and-their-relation-with-bmi
#17
Margalida Cifre, Rubén Díaz-Rúa, Rubén Varela-Calviño, Bàrbara Reynés, Jordi Pericás-Beltrán, Andreu Palou, Paula Oliver
SCOPE: To analyse usefulness of isolated human peripheral blood mononuclear cells (PBMC) to rapidly/easily reflect n-3 long-chain polyunsaturated fatty acid (LCPUFA) effects on lipid metabolism/inflammation gene profile, and evaluate if these effects are BMI-dependent. METHODS AND RESULTS: PBMC from normoweight (NW) and overweight/obese (OW/OB) subjects were incubated with physiological doses of docosahexaenoic (DHA), eicosapentaenoic acid (EPA), or their combination...
November 22, 2016: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/27872488/pld1-regulates-adipogenic-differentiation-through-mtor-irs-1-phosphorylation-at-serine-636-639
#18
Hae-In Song, Mee-Sup Yoon
Phospholipase D1 (PLD1) plays a known role in several differentiation processes, but its role in adipogenic differentiation remains unknown. In the present study, we identified PLD1 as a negative regulator of adipogenic differentiation. We showed that PLD activity was downregulated by both 3-Isobutyl-1-methylxanthine (IBMX) and insulin upon induction of differentiation in 3T3-L1 adipogenic cells. In line with this observation, PLD activity decreased in both high fat diet (HFD)-fed mice and ob/ob mice. We also found that differentiation of 3T3-L1 preadipocytes was enhanced by the depletion of PLD1 levels or inhibition of PLD1 activity by VU0155069, a PLD1-specific inhibitor...
November 22, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27871636/correlates-of-overweight-and-obesity-among-adolescents-with-bipolar-disorder-in-the-national-comorbidity-survey-adolescent-supplement-ncs-a
#19
Benjamin I Goldstein, Carlos Blanco, Jian-Ping He, Kathleen Merikangas
OBJECTIVE: Despite substantial evidence on the prevalence and correlates of overweight and obesity (OW/OB) in adults with bipolar disorder (BD), little is known about this topic in adolescents with BD. METHOD: The method consisted of the National Comorbidity Survey-Adolescent Supplement, a face-to-face survey of mental disorders from 2001 through 2004, using a modified version of the fully structured World Health Organization Composite International Diagnostic Interview...
December 2016: Journal of the American Academy of Child and Adolescent Psychiatry
https://www.readbyqxmd.com/read/27871269/institutionalizing-postpartum-intrauterine-device-iud-services-in-sri-lanka-tanzania-and-nepal-study-protocol-for-a-cluster-randomized-stepped-wedge-trial
#20
David Canning, Iqbal H Shah, Erin Pearson, Elina Pradhan, Mahesh Karra, Leigh Senderowicz, Till Bärnighausen, Donna Spiegelman, Ana Langer
BACKGROUND: During the year following the birth of a child, 40% of women are estimated to have an unmet need for contraception. The copper IUD provides safe, effective, convenient, and long-term contraceptive protection that does not interfere with breastfeeding during the postpartum period. Postpartum IUD (PPIUD) insertion should be performed by a trained provider in the early postpartum period to reduce expulsion rates and complications, but these services are not widely available. The International Federation of Obstetricians and Gynecologists (FIGO) will implement an intervention that aims to institutionalize PPIUD training as a regular part of the OB/GYN training program and to integrate it as part of the standard practice at the time of delivery in intervention hospitals...
November 21, 2016: BMC Pregnancy and Childbirth
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