keyword
MENU ▼
Read by QxMD icon Read
search

PGC-1a

keyword
https://www.readbyqxmd.com/read/29669911/mpc1-is-essential-for-pgc-1%C3%AE-induced-mitochondrial-respiration-and-biogenesis
#1
Eunjin Koh, Young Kyung Kim, Daye Shin, Kyung-Sup Kim
Mitochondrial pyruvate carrier (MPC), which is essential for mitochondrial pyruvate usage, mediates transport of cytosolic pyruvate into mitochondria. Low MPC expression is associated with various cancers, and functionally associated with glycolytic metabolism and stemness. However, the mechanism by which MPC expression is regulated is largely unknown. In this study, we showed that MPC1 is downregulated in human renal cell carcinoma (RCC) due to strong suppression of peroxisome proliferator-activated receptor-gamma coactivator (PGC)-1 alpha (PGC-1α)...
April 18, 2018: Biochemical Journal
https://www.readbyqxmd.com/read/29556289/pro-metastatic-signaling-of-the-trans-fatty-acid-elaidic-acid-is-associated-with-lipid-rafts
#2
Shingo Kishi, Rina Fujiwara-Tani, Yi Luo, Isao Kawahara, Kei Goto, Kiyomu Fujii, Hitoshi Ohmori, Chie Nakashima, Takamitsu Sasaki, Hiroki Kuniyasu
Trans fatty acids (TFAs) are risk factors for cardiovascular disorders, and the cancer-promoting effects of TFAs have been previously reported. The present study examined the effects and signaling of elaidic acid (EA), a TFA, in colorectal cancer (CRC) cells. Oral intake of EA was found to increase metastasis of HT29 human CRC cells. Results indicated that, in the plasma membrane, EA was integrated into cholesterol rafts, which contain epidermal growth factor receptors (EGFR). EA increased nanog and c-myc, and decreased PGC-1A through lipid raft-associated EGFR signaling in HT29 cells...
April 2018: Oncology Letters
https://www.readbyqxmd.com/read/29554135/thermogenic-capacity-of-human-periaortic-adipose-tissue-is-transformed-by-body-weight
#3
Diana Vargas, Carolina López, Edward Acero, Edgar Benitez, Angélica Wintaco, Jaime Camacho, Marisol Carreño, Juan Umaña, Daniela Jimenez, Said Díaz, Fernando Lizcano
The anatomical location of adipose tissue might have direct implications for its functionality and risk of cardiovascular disease. Adipose tissue surrounding blood vessels may be thermogenically more active in specific areas of the body, releasing substances that regulate vascular metabolism. In humans, the phenotypic characteristics of adipose tissue surrounding the aorta and the cardiovascular disease risk that it might entail remain largely unknown. Here, we compared thermogenesis-related molecular features of human periaortic adipose tissue samples with those of subcutaneous adipose tissue, obtained by sternotomy from 42 patients undergoing cardiovascular surgery...
2018: PloS One
https://www.readbyqxmd.com/read/29361788/mir-93-5p-promotes-cell-proliferation-through-down-regulating-ppargc1a-in-hepatocellular-carcinoma-cells-by-bioinformatics-analysis-and-experimental-verification
#4
Xinrui Wang, Zhijun Liao, Zhimin Bai, Yan He, Juan Duan, Leyi Wei
Peroxisome proliferator-activated receptor gamma coactivator-1 alpha (PPARGC1A, formerly known as PGC-1a) is a transcriptional coactivator and metabolic regulator. Previous studies are mainly focused on the association between PPARGC1A and hepatoma. However, the regulatory mechanism remains unknown. A microRNA associated with cancer (oncomiR), miR-93-5p, has recently been found to play an essential role in tumorigenesis and progression of various carcinomas, including liver cancer. Therefore, this paper aims to explore the regulatory mechanism underlying these two proteins in hepatoma cells...
January 22, 2018: Genes
https://www.readbyqxmd.com/read/29151827/tumor-necrosis-factor-like-weak-inducer-of-apoptosis-regulates-quadriceps-muscle-atrophy-and-fiber-type-alteration-in-a-rat-model-of-chronic-obstructive-pulmonary-disease
#5
Jun-Juan Lu, Qing Wang, Li Hua Xie, Qiang Zhang, Sheng Hua Sun
Background: In chronic obstructive pulmonary disease (COPD), weakness and muscle mass loss of the quadriceps muscle has been demonstrated to predict survival and mortality rates of patients. Tumor necrosis factor (TNF)-like weak inducer of apoptosis (TWEAK), as a member of the TNF superfamily, has recently been identified as a key regulator of skeletal muscle wasting and metabolic dysfunction. So our aim was to study the role of TWEAK during quadriceps muscle atrophy and fiber-type transformation in COPD model rats and its possible pathway...
2017: Tobacco Induced Diseases
https://www.readbyqxmd.com/read/29020797/extracellular-superoxide-dismutase-attenuates-renal-oxidative-stress-through-the-activation-of-adenosine-monophosphate-activated-protein-kinase-in-diabetic-nephropathy
#6
Yu Ah Hong, Ji Hee Lim, Min Young Kim, Yaeni Kim, Hoon Suk Park, Hyung Wook Kim, Bum Soon Choi, Yoon Sik Chang, Hye Won Kim, Tae-Yoon Kim, Cheol Whee Park
AIMS: Oxidative stress plays a crucial role in the pathogenesis of diabetic nephropathy (DN). We evaluated whether extracellular superoxide dismutase (EC-SOD) has a renoprotective effect through activation of adenosine monophosphate-activated protein kinase (AMPK) in diabetic kidneys. RESULTS: Human recombinant EC-SOD (hEC-SOD) was administered to 8-week-old male C57BLKS/J db/db mice through intraperitoneal injection once a week for 8 weeks. Renal SOD3 expression was suppressed in db/db mice, which was significantly enhanced by hEC-SOD treatment...
November 14, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28620456/effects-of-physical-activity-on-the-link-between-pgc-1a-and-fndc5-in-muscle-circulating-%C3%AE-risin-and-ucp1-of-white-adipocytes-in-humans-a-systematic-review
#7
Petros C Dinas, Ian M Lahart, James A Timmons, Per-Arne Svensson, Yiannis Koutedakis, Andreas D Flouris, George S Metsios
Background: Exercise may activate a brown adipose-like phenotype in white adipose tissue. The aim of this systematic review was to identify the effects of physical activity on the link between peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1a) and fibronectin type III domain-containing protein 5 (FNDC5) in muscle, circulating Irisin and uncoupling protein one (UCP1) of white adipocytes in humans. Methods: Two databases (PubMed 1966 to 08/2016 and EMBASE 1974 to 08/2016) were searched using an appropriate algorithm...
2017: F1000Research
https://www.readbyqxmd.com/read/28288859/mitochondrial-toxicity-of-perfluorooctane-sulfonate-in-mouse-embryonic-stem-cell-derived-cardiomyocytes
#8
Lei-Lei Tang, Jia-Dan Wang, Ting-Ting Xu, Zhe Zhao, Jia-Jie Zheng, Ren-Shan Ge, Dan-Yan Zhu
Perfluorooctane sulfonate (PFOS) is a persistent organic contaminant that may cause cardiotoxicity in animals and humans. However, little is known about the underlying mechanism by which it affects the organelle toxicity in cardiomyocytes during the cardiogenesis. Our previous proteomic study showed that differences of protein expression mainly existed in mitochondria of cardiomyocytes differentiated from embryonic stem (ES) cells after exposure to PFOS. Here, we focused on mitochondrial toxicity of PFOS in ES cell-derived cardiomyocytes...
May 1, 2017: Toxicology
https://www.readbyqxmd.com/read/28178868/low-level-laser-effect-on-proliferation-migration-and-antiapoptosis-of-mesenchymal-stem-cells
#9
Kan Yin, Rongjia Zhu, Shihua Wang, Robert Chunhua Zhao
Mesenchymal stem cells (MSCs) have been proved to be an important element in cell-based therapy. Photobiomodulation used extremely low-level lasers (LLLs) to affect the behavior of cells. The effect mechanism of LLLs on MSCs from human remained to be discovered. In this study, cell viability was assessed using MTS assays and cell cycle was evaluated by fluorescence-activated cell sorting (FACS). The influence of LLLs on mitochondrial biogenesis (fission or fusion) and function (ATP, reactive oxygen species [ROS], nitric oxide [NO]) was evaluated by transmission electron microscope, FACS, quantitative real time polymerase chain reaction (q-PCR), and immunocytochemistry...
May 15, 2017: Stem Cells and Development
https://www.readbyqxmd.com/read/28156058/aging-and-caloric-restriction-impact-adipose-tissue-adiponectin-and-circulating-lipids
#10
Karl N Miller, Maggie S Burhans, Josef P Clark, Porsha R Howell, Michael A Polewski, Tyler M DeMuth, Kevin W Eliceiri, Mary J Lindstrom, James M Ntambi, Rozalyn M Anderson
Adipose tissue expansion has been associated with system-wide metabolic dysfunction and increased vulnerability to diabetes, cancer, and cardiovascular disease. A reduction in adiposity is a hallmark of caloric restriction (CR), an intervention that extends longevity and delays the onset of these same age-related conditions. Despite these parallels, the role of adipose tissue in coordinating the metabolism of aging is poorly defined. Here, we show that adipose tissue metabolism and secretory profiles change with age and are responsive to CR...
June 2017: Aging Cell
https://www.readbyqxmd.com/read/27913948/branched-chain-amino-acids-administration-suppresses-endurance-exercise-related-activation-of-ubiquitin-proteasome-signaling-in-trained-human-skeletal-muscle
#11
Evgeny A Lysenko, Tatiana F Vepkhvadze, Egor M Lednev, Olga L Vinogradova, Daniil V Popov
We tested whether post exercise ingestion of branched-chain amino acids (BCAA < 10 g) is sufficient to activate signaling associated with muscle protein synthesis and suppress exercise-induced activation of mechanisms associated with proteolysis in endurance-trained human skeletal muscle. Nine endurance-trained athletes performed a cycling bout with and without BCAA ingestion (0.1 g/kg). Post exercise ACCSer79/222 phosphorylation (endogenous marker of AMPK activity) was increased (~3-fold, P < 0...
January 2018: Journal of Physiological Sciences: JPS
https://www.readbyqxmd.com/read/27780920/prognostic-value-of-plasma-levels-of-hif-1a-and-pgc-1a-in-breast-cancer
#12
Feng-Feng Cai, Cheng Xu, Xin Pan, Lu Cai, Xiao-Yan Lin, Su Chen, Ewelina Biskup
Cellular adaptive mechanisms are crucial for tumorigenesis and a common feature in solid tumor progression. Hypoxia-inducible factor-1α (HIF-1α) facilitates the biological response to hypoxia, advancing angiogenesis and metastatic potential of the tumor. The peroxisome proliferator-activated receptor γ coactivators 1α (PGC-1α) enhances mitochondrial biogenesis, favored by migratory/invasive cancer cells. We conducted a prospective, long-term follow up study to determine whether HIF-1α and PGC-1α can be implemented as predictive biomarker in breast cancer...
November 22, 2016: Oncotarget
https://www.readbyqxmd.com/read/27601924/knockdown-of-peroxisome-proliferator-activated-receptor-gamma-coactivator-1-alpha-increased-apoptosis-of-human-endometrial-cancer-hec-1a-cells
#13
Hui Yang, Rui Yang, Hao Liu, Zhongqian Ren, Cuicui Wang, Da Li, Xiaoxin Ma
BACKGROUND: Peroxisome proliferator-activated receptor gamma coactivator-1 alpha (PGC-1α) coactivates multiple transcription factors and regulates several metabolic processes. In this study, we focused on the roles of PGC-1α in the apoptosis of endometrial cancer HEC-1A cells. MATERIALS AND METHODS: PGC-1a expression in the HEC-1A cells was detected with real-time polymerase chain reaction and Western blot. Small interfering RNA directed against PGC-1α was designed and synthesized, and RNA interference technology was used to knock down PGC-1α mRNA and protein expression...
2016: OncoTargets and Therapy
https://www.readbyqxmd.com/read/27597651/disentangling-the-effect-of-dietary-restriction-on-mitochondrial-function-using-recombinant-inbred-mice
#14
Lorna Mulvey, William A Sands, Karine Salin, Amanda E Carr, Colin Selman
Dietary restriction (DR) extends lifespan and healthspan in many species, but precisely how it elicits its beneficial effects is unclear. We investigated the impact of DR on mitochondrial function within liver and skeletal muscle of female ILSXISS mice that exhibit strain-specific variation in lifespan under 40% DR. Strains TejJ89 (lifespan increased under DR), TejJ48 (lifespan unaffected by DR) and TejJ114 (lifespan decreased under DR) were studied following 10 months of 40% DR (13 months of age). Oxygen consumption rates (OCR) within isolated liver mitochondria were unaffected by DR in TejJ89 and TejJ48, but decreased by DR in TejJ114...
November 5, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/27302464/thyroid-hormone-activation-by-type-2-deiodinase-mediates-exercise-induced-peroxisome-proliferator-activated-receptor-%C3%AE-coactivator-1%C3%AE-expression-in-skeletal-muscle
#15
Barbara M L C Bocco, Ruy A N Louzada, Diego H S Silvestre, Maria C S Santos, Elena Anne-Palmer, Igor F Rangel, Sherine Abdalla, Andrea C Ferreira, Miriam O Ribeiro, Balázs Gereben, Denise P Carvalho, Antonio C Bianco, João P Werneck-de-Castro
KEY POINTS: In skeletal muscle, physical exercise and thyroid hormone mediate the peroxisome proliferator-activated receptor-γ coactivator-1α (PGC-1a) expression that is crucial to skeletal muscle mitochondrial function. The expression of type 2 deiodinase (D2), which activates thyroid hormone in skeletal muscle is upregulated by acute treadmill exercise through a β-adrenergic receptor-dependent mechanism. Pharmacological block of D2 or disruption of the Dio2 gene in skeletal muscle fibres impaired acute exercise-induced PGC-1a expression...
September 15, 2016: Journal of Physiology
https://www.readbyqxmd.com/read/27231350/peroxisome-proliferator-activated-receptor-%C3%AE-coactivator-1-%C3%AE-isoforms-selectively-regulate-multiple-splicing-events-on-target-genes
#16
Vicente Martínez-Redondo, Paulo R Jannig, Jorge C Correia, Duarte M S Ferreira, Igor Cervenka, Jessica M Lindvall, Indranil Sinha, Manizheh Izadi, Amanda T Pettersson-Klein, Leandro Z Agudelo, Alfredo Gimenez-Cassina, Patricia C Brum, Karin Dahlman-Wright, Jorge L Ruas
Endurance and resistance exercise training induces specific and profound changes in the skeletal muscle transcriptome. Peroxisome proliferator-activated receptor γ coactivator-1 α (PGC-1α) coactivators are not only among the genes differentially induced by distinct training methods, but they also participate in the ensuing signaling cascades that allow skeletal muscle to adapt to each type of exercise. Although endurance training preferentially induces PGC-1α1 expression, resistance exercise activates the expression of PGC-1α2, -α3, and -α4...
July 15, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27179217/histopathological-comparison-of-kearns-sayre-syndrome-and-pgc-1%C3%AE-deficient-mice-suggests-a-novel-concept-for-vacuole-formation-in-mitochondrial-encephalopathy
#17
COMPARATIVE STUDY
L Szalardy, M Molnar, R Torok, D Zadori, L Vecsei, P Klivenyi, P Liberski, G G Kovacs
Despite the current hypotheses about myelinic and astrocytic ion-dyshomeostasis underlying white (WM) and grey matter (GM) vacuolation in mitochondrial encephalopathies, there is a paucity of data on the exact mechanism of vacuole formation. To revisit the concepts of vacuole formation associated with mitochondrial dysfunction, we performed a comparative neuropathological analysis in Kearns-Sayre syndrome (KSS) and full-length peroxisome proliferator-activated receptor-g coactivator-1a (FL-PGC-1a)-deficient mice, a recently proposed morphological model of mitochondrial encephalopathies...
2016: Folia Neuropathologica
https://www.readbyqxmd.com/read/27086851/sumoylation-of-the-krab-zinc-finger-transcription-factor-paris-znf746-regulates-its-transcriptional-activity
#18
Tamotsu Nishida, Yoshiji Yamada
Parkin-interacting substrate (PARIS), a member of the family of Krüppel-associated box (KRAB)-containing zinc-finger transcription factors, is a substrate of the ubiquitin E3 ligase parkin. PARIS represses the expression of peroxisome proliferator-activated receptor γ coactivator-1α (PGC-1α), although the underlying mechanisms remain largely unknown. In the present study, we demonstrate that PARIS can be SUMOylated, and its SUMOylation plays a role in the repression of PGC-1a promoter activity. Protein inhibitor of activated STAT y (PIASy) was identified as an interacting protein of PARIS and shown to enhance its SUMOylation...
May 13, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/26530101/electroacupuncture-upregulates-sirt1-dependent-pgc-1%C3%AE-expression-in-samp8-mice
#19
Weiguo Dong, Wanqing Quo, Feng Wang, Changzheng Li, Yongcai Xie, Xuehua Zheng, Hong Shi
BACKGROUND: Abnormalities of brain energy metabolism are involved in Alzheimer disease (AD). Sirtuin 1 (SIRT1) is a class III histone deacetylase and activates peroxisome proliferator-activated receptor-γ co-activator-1α (PGC-1α), which enhances mitochondrial biogenesis and energy homeostasis. Electroacupuncture (EA) has been reported to improve brain energy metabolism in AD. However, the effect of EA on SIRT1 and PGC-1α in AD remains unclear. MATERIAL AND METHODS: ATP levels were measured using assay kits in the hippocampus and frontal cortex of senescence-accelerated mouse prone 8 (SAMP8) mice...
November 4, 2015: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/26521204/the-role-of-sirtuins-in-aging-and-age-related-diseases
#20
REVIEW
Mateusz Wątroba, Dariusz Szukiewicz
Sirtuins, initially described as histone deacetylases and gene silencers in yeast, are now known to have much more functions and to be much more abundant in living organisms. Sirtuins gained much attention when they were first acknowledged to be responsible for some beneficial and longevity-promoting effects of calorie restriction in many species of animals - from fruit flies to mammals. In this paper, we discuss some detailed molecular mechanisms of inducing these effects, and wonder if they could be possibly mimicked without actually applying calorie restriction, through induction of sirtuin activity...
March 2016: Advances in Medical Sciences
keyword
keyword
14084
1
2
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"