Read by QxMD icon Read

Pgc1 alpha

L M Laiglesia, S Lorente-Cebrián, P L Prieto-Hontoria, M Fernández-Galilea, S M R Ribeiro, N Sáinz, J A Martínez, M J Moreno-Aliaga
Eicosapentaenoic acid (EPA), a n-3 long-chain polyunsaturated fatty acid, has been reported to have beneficial effects in obesity-associated metabolic disorders. The objective of the present study was to determine the effects of EPA on the regulation of genes involved in lipid metabolism, and the ability of EPA to induce mitochondrial biogenesis and beiging in subcutaneous adipocytes from overweight subjects. Fully differentiated human subcutaneous adipocytes from overweight females (BMI: 28.1-29.8kg/m(2)) were treated with EPA (100-200 μM) for 24 h...
August 26, 2016: Journal of Nutritional Biochemistry
Thereza Cristina Lonzetti Bargut, Marcia Barbosa Aguila, Carlos Alberto Mandarim-de-Lacerda
Brown adipose tissue (BAT) is mainly composed of adipocytes, it is highly vascularized and innervated, and can be activated in adult humans. Brown adipocytes are responsible for performing non-shivering thermogenesis, which is exclusively mediated by uncoupling protein (UCP) -1 (a protein found in the inner mitochondrial membrane), the hallmark of BAT, responsible for the uncoupling of the proton leakage from the ATP production, therefore, generating heat (i.e. thermogenesis). Besides UCP1, other compounds are essential not only to thermogenesis, but also to the proliferation and differentiation of BAT, including peroxisome proliferator-activated receptor (PPAR) family, PPARgamma coactivator 1 (PGC1)-alpha, and PRD1-BF-1-RIZ1 homologous domain protein containing protein (PRDM) -16...
October 2016: Tissue & Cell
Yao Yan, Zong-Bao Wang, Chao-Ke Tang
PPAR-alpha expressed primarily in liver is essential for metabolic adaptation to starvation by inducing genes for beta-oxidation and ketogenesis to increase the utility of LCFAs and fibroblast growth factor 21. PPAR-delta induces genes for LCFA oxidation during fasting and endurance exercise in skeletal muscle. PPAR-delta also regulates glucose metabolism and mitochondrial biogenesis by inducing FOXO1 and PGC1-alpha. PPAR-gamma can induces the pathways to store LCFAs as triglycerides in adipocytes. Adiponectin, another important target of PPAR-gamma may maintain insulin sensitivity between adipocytes...
February 2016: Sheng Li Ke Xue Jin Zhan [Progress in Physiology]
Veronica Torrano, Lorea Valcarcel-Jimenez, Ana Rosa Cortazar, Xiaojing Liu, Jelena Urosevic, Mireia Castillo-Martin, Sonia Fernández-Ruiz, Giampaolo Morciano, Alfredo Caro-Maldonado, Marc Guiu, Patricia Zúñiga-García, Mariona Graupera, Anna Bellmunt, Pahini Pandya, Mar Lorente, Natalia Martín-Martín, James David Sutherland, Pilar Sanchez-Mosquera, Laura Bozal-Basterra, Amaia Zabala-Letona, Amaia Arruabarrena-Aristorena, Antonio Berenguer, Nieves Embade, Aitziber Ugalde-Olano, Isabel Lacasa-Viscasillas, Ana Loizaga-Iriarte, Miguel Unda-Urzaiz, Nikolaus Schultz, Ana Maria Aransay, Victoria Sanz-Moreno, Rosa Barrio, Guillermo Velasco, Paolo Pinton, Carlos Cordon-Cardo, Jason W Locasale, Roger R Gomis, Arkaitz Carracedo
Cellular transformation and cancer progression is accompanied by changes in the metabolic landscape. Master co-regulators of metabolism orchestrate the modulation of multiple metabolic pathways through transcriptional programs, and hence constitute a probabilistically parsimonious mechanism for general metabolic rewiring. Here we show that the transcriptional co-activator peroxisome proliferator-activated receptor gamma co-activator 1α (PGC1α) suppresses prostate cancer progression and metastasis. A metabolic co-regulator data mining analysis unveiled that PGC1α is downregulated in prostate cancer and associated with disease progression...
June 2016: Nature Cell Biology
Li-Li Wen, Chien-Yu Lin, Hsiu-Chu Chou, Chih-Cheng Chang, Hau-Yin Lo, Shu-Hui Juan
Perfluorinated chemicals (PFCs) are ubiquitously distributed in the environments including stainless pan-coating, raincoat, fire extinguisher, and semiconductor products. The PPAR family has been shown to contribute to the toxic effects of PFCs in thymus, immune and excretory systems. Herein, we demonstrated that perfluorooctanesulfonate (PFOS) caused cell apoptosis through increasing ratio of Bcl-xS/xL, cytosolic cytochrome C, and caspase 3 activation in renal tubular cells (RTCs). In addition, PFOS increased transcription of inflammatory cytokines (i...
2016: PloS One
Manuel Arias-Calderón, Gonzalo Almarza, Alexis Díaz-Vegas, Ariel Contreras-Ferrat, Denisse Valladares, Mariana Casas, Héctor Toledo, Enrique Jaimovich, Sonja Buvinic
BACKGROUND: Electrical activity regulates the expression of skeletal muscle genes by a process known as "excitation-transcription" (E-T) coupling. We have demonstrated that release of adenosine 5'-triphosphate (ATP) during depolarization activates membrane P2X/P2Y receptors, being the fundamental mediators between electrical stimulation, slow intracellular calcium transients, and gene expression. We propose that this signaling pathway would require the proper coordination between the voltage sensor (dihydropyridine receptor, DHPR), pannexin 1 channels (Panx1, ATP release conduit), nucleotide receptors, and other signaling molecules...
2016: Skeletal Muscle
Thomas A Bowman, Kayleigh R O'Keeffe, Theresa D'Aquila, Qing Wu Yan, John D Griffin, Elizabeth A Killion, Deanna M Salter, Douglas G Mashek, Kimberly K Buhman, Andrew S Greenberg
OBJECTIVE: The family of acyl-CoA synthetase enzymes (ACSL) activates fatty acids within cells to generate long chain fatty acyl CoA (FACoA). The differing metabolic fates of FACoAs such as incorporation into neutral lipids, phospholipids, and oxidation pathways are differentially regulated by the ACSL isoforms. In vitro studies have suggested a role for ACSL5 in triglyceride synthesis; however, we have limited understanding of the in vivo actions of this ACSL isoform. METHODS: To elucidate the in vivo actions of ACSL5 we generated a line of mice in which ACSL5 expression was ablated in all tissues (ACSL5 (-/-) )...
March 2016: Molecular Metabolism
Anna Rocchi, Carmelo Milioto, Sara Parodi, Andrea Armirotti, Doriana Borgia, Matteo Pellegrini, Anna Urciuolo, Sibilla Molon, Valeria Morbidoni, Manuela Marabita, Vanina Romanello, Pamela Gatto, Bert Blaauw, Paolo Bonaldo, Fabio Sambataro, Diane M Robins, Andrew P Lieberman, Gianni Sorarù, Lodovica Vergani, Marco Sandri, Maria Pennuto
Spinal and bulbar muscular atrophy (SBMA) is a neuromuscular disease caused by the expansion of a polyglutamine tract in the androgen receptor (AR). The mechanism by which expansion of polyglutamine in AR causes muscle atrophy is unknown. Here, we investigated pathological pathways underlying muscle atrophy in SBMA knock-in mice and patients. We show that glycolytic muscles were more severely affected than oxidative muscles in SBMA knock-in mice. Muscle atrophy was associated with early-onset, progressive glycolytic-to-oxidative fiber-type switch...
July 2016: Acta Neuropathologica
Rosario Barone, Filippo Macaluso, Claudia Sangiorgi, Claudia Campanella, Antonella Marino Gammazza, Viviana Moresi, Dario Coletti, Everly Conway de Macario, Alberto Jl Macario, Francesco Cappello, Sergio Adamo, Felicia Farina, Giovanni Zummo, Valentina Di Felice
Heat shock protein 60 (Hsp60) is a chaperone localizing in skeletal muscle mitochondria, whose role is poorly understood. In the present study, the levels of Hsp60 in fibres of the entire posterior group of hindlimb muscles (gastrocnemius, soleus, and plantaris) were evaluated in mice after completing a 6-week endurance training program. The correlation between Hsp60 levels and the expression of four isoforms of peroxisome proliferator-activated receptor gamma coactivator 1 alpha (PGC1α) were investigated only in soleus...
2016: Scientific Reports
Sang-Bin Lee, Hong-Ik Cho, Young-Woo Jin, Eun-Kyong Lee, Jeung Youb Ahn, Sun-Mee Lee
OBJECTIVES: The aim of this study was to determine the protective mechanisms of wild ginseng cambial meristematic cells (CMCs) on non-alcoholic fatty liver disease in high-fat diet (HFD)-fed mice. METHODS: Male C57BL/6 mice received either normal-fat diet or HFD for 10 weeks along with wild ginseng CMCs (75, 150 and 300 mg/kg) or vehicle (0.5% carboxyl methyl cellulose) by oral administration once a day. Triglyceride and total cholesterol contents were measured in liver and serum samples...
January 2016: Journal of Pharmacy and Pharmacology
Maerjianghan Abuduli, Hirokazu Ohminami, Tamaki Otani, Hitoshi Kubo, Haruka Ueda, Yoshichika Kawai, Masashi Masuda, Hisami Yamanaka-Okumura, Hiroshi Sakaue, Hironori Yamamoto, Eiji Takeda, Yutaka Taketani
Recent epidemiological and animal studies have suggested that excess intake of phosphate (Pi) is a risk factor for the progression of chronic kidney disease and its cardiovascular complications. However, little is known about the impact of dietary high Pi intake on the development of metabolic disorders such as obesity and type 2 diabetes. In this study, we investigated the effects of dietary Pi on glucose and lipid metabolism in healthy rats. Male 8-wk-old Sprague-Dawley rats were divided into three groups and given experimental diets containing varying amounts of Pi, i...
April 1, 2016: American Journal of Physiology. Endocrinology and Metabolism
Xiang Yi Kong, Yuan Zeng Feng, Einar Eftestøl, Eili T Kase, Hanne Haugum, Winnie Eskild, Arild C Rustan, G Hege Thoresen
Glycosylated lysosomal membrane protein (GLMP) has been reported to enhance the expression from a peroxisome proliferator-activated receptor alpha (PPARα) responsive promoter, but also to be an integral lysosomal membrane protein. Using myotubes established from wild-type and Glmp(gt/gt) mice, the importance of GLMP in skeletal muscle was examined. Glmp(gt/gt) myotubes expressed a more glycolytic phenotype than wild-type myotubes. Myotubes from Glmp(gt/gt) mice metabolized glucose faster and had a larger pool of intracellular glycogen, while oleic acid uptake, storage and oxidation were significantly reduced...
February 2016: Archives of Physiology and Biochemistry
Julia Brenmoehl, Daniela Ohde, Christina Walz, Julia Schultz, Armin Tuchscherer, Florian Rieder, Ulla Renne, Andreas Hoeflich
OBJECTIVE: Reduction of body fat can be achieved by dietary programs and/or aerobic exercise training. More convenient methods to rid the body of excess fat are needed. However, it is unclear whether it is possible to more easily lose body weight at all. METHODS: DUhTP mice bred through phenotype selection for high treadmill performance and unselected controls were voluntarily physically active in a running wheel over a period of 3 weeks. Phenotypical data were collected, and subcutaneous fat was analyzed for expression of mitochondria-relevant proteins...
2015: Obesity Facts
Mi Young Song, Seok Yong Kang, Tae Woo Oh, Rethineswaran Vinoth Kumar, Hyo Won Jung, Yong-Ki Park
The root of Atractylodes macrocephala Koidzumi (Atractylodis Rhizoma Alba, ARA) is a Traditional Korean Medicine and has been commonly used for weight control. Mitochondrial dysfunction appears to be a key contributor to insulin resistance, and therefore mitochondrial targeting drugs represent an important potential strategy for the treatment of insulin resistance and obesity. In this study, the authors investigated the regulatory effects of ARA on mitochondrial function with respect to the stimulation of glucose and lipid metabolism in C2C12 myotubes...
2015: Evidence-based Complementary and Alternative Medicine: ECAM
Qian Sun, Wei Zhong, Wenliang Zhang, Zhanxiang Zhou
Morphological and functional alterations of hepatic mitochondria have been documented in patients with alcoholic liver disease (ALD). Our recent study demonstrated that zinc level was decreased in whole liver and mitochondria by chronic alcohol feeding. The present study was undertaken to determine whether zinc deficiency mediates alcohol-induced mitochondrial electron transport chain (ETC) defect and whether defective ETC function may lead to generation of reactive oxygen species (ROS). Male Wistar rats were pair fed with the Lieber-DeCarli control or ethanol diet for 5 mo...
February 1, 2016: American Journal of Physiology. Gastrointestinal and Liver Physiology
A K G Vieira, V M Soares, A F Bernardo, F A Neves, A B M Mattos, R M Guedes, E Cortez, D C Andrade, G Lacerda-Miranda, E P Garcia-Souza, A S Moura
AIM: In this study, the effects of postnatal overfeeding on heart energy homoeostasis and cardiac haemodynamics in adult male Swiss mice were examined. METHODS AND RESULTS: During the suckling period, the mice were divided into four groups of control or overfed pups in combination with baseline or ischaemia/reperfusion treatments (control group baseline, CGBL; overfed group baseline, OGBL; control group ischaemia/reperfusion, CGIR; and overfed group ischaemia/reperfusion, OGIR)...
November 2015: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
Ricardo J Samms, Michelle Murphy, Maxine J Fowler, Scott Cooper, Paul Emmerson, Tamer Coskun, Andrew C Adams, Alexei Kharitonenkov, Francis J P Ebling, Kostas Tsintzas
The aim of this study was to investigate the mechanisms by which fibroblast growth factor 21 (FGF21) affects hepatic integration of carbohydrate and fat metabolism in Siberian hamsters, a natural model of adiposity. Twelve aged matched adult male Siberian hamsters maintained in their long-day fat state since birth were randomly assigned to one of two treatment groups and were continuously infused with either vehicle (saline; n=6) or recombinant human FGF21 protein (1 mg/kg per day; n=6) for 14 days. FGF21 administration caused a 40% suppression (P<0...
October 2015: Journal of Endocrinology
M Raj Lakshman, Karina Reyes-Gordillo, Ravi Varatharajalu, Jaime Arellanes-Robledo, Leslie C Leckey, Mamatha Garige, Ruchi Shah
Alcoholic steatosis, instead of being innocuous, plays a critical role in liver inflammation and fibrogenesis. The severity of fatty liver is governed by the concerted balance between lipid transport, synthesis, and degradation. Whereas scavenger receptor class B, type I (SR-B1) is critical for reverse cholesterol uptake by the liver, peroxisome proliferator-activated receptor-gamma (PPARγ) coactivator-1α and -β (PGC1α and PGC1β) are critical for lipid degradation and synthesis, respectively. Because betaine is a lipotropic agent, we have evaluated its effects on alcoholic steatosis...
September 2014: Hepatology International
Modesto Gómez López, Aarón Domínguez López, Edgar Abarca Rojano, Saúl Rojas Hernández, María de Los A Martínez Godínez, Angel Miliar García, Rafael Campos Rodríguez
CONTEXT: It has been reported that 17β-estradiol (E2) reduces the expression of inflammatory molecules, but there are no data that show the effect of E2 on the transcriptional regulation of innate immunity-related molecules and inflammasomes. OBJECTIVE: To study the effect of 17β-estradiol (E2) on the transcriptional expression of the NLR family, pyrin domain containing 1 (Nlrp1) and (Nlrp3) inflammasomes, which are mediators of inflammation. MATERIALS AND METHODS: Inflammation was induced in adult female gonadectomized (Gdx) rats by intramuscular injection of complete Freund's adjuvant (CFA)...
2015: Immunopharmacology and Immunotoxicology
Shawna E Wicks, Bolormaa Vandanmagsar, Kimberly R Haynie, Scott E Fuller, Jaycob D Warfel, Jacqueline M Stephens, Miao Wang, Xianlin Han, Jingying Zhang, Robert C Noland, Randall L Mynatt
The correlations between intramyocellular lipid (IMCL), decreased fatty acid oxidation (FAO), and insulin resistance have led to the hypothesis that impaired FAO causes accumulation of lipotoxic intermediates that inhibit muscle insulin signaling. Using a skeletal muscle-specific carnitine palmitoyltransferase-1 KO model, we show that prolonged and severe mitochondrial FAO inhibition results in increased carbohydrate utilization, along with reduced physical activity; increased circulating nonesterified fatty acids; and increased IMCLs, diacylglycerols, and ceramides...
June 23, 2015: Proceedings of the National Academy of Sciences of the United States of America
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"