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https://www.readbyqxmd.com/read/29913155/antifibrotic-role-of-pgc-1%C3%AE-sirna-against-tgf-%C3%AE-1-induced-renal-interstitial-fibrosis
#1
Jue-Long Wang, Chin-Wang Chen, Mu-Rou Tsai, Shu-Fen Liu, Tsuing-Jeu Hung, Yu-Ju-Hung, Wen-Teng Chang, Ming-Der Shi, Pei-Fang Hsieh, Yu-Lin Yang
Peroxisome proliferator-activated receptor coactivator-1 alpha (PGC-1α) is a transcriptional coactivator that regulates energy metabolism and mitochondrial biogenesis. Recently, mitochondrial dysfunction has been indicated as an established risk factor for the development of renal fibrosis. However, whether PGC-1α is involved in the pathogenesis of renal fibrosis is unknown. In this study, we treated NRK-49F (normal rat kidney fibroblast) cells with transforming growth factor-beta 1 (TGF-β1) for 24h to establish an in vitro fibrosis model...
June 15, 2018: Experimental Cell Research
https://www.readbyqxmd.com/read/29882814/berberine-protects-against-nefa-induced-impairment-of-mitochondrial-respiratory-chain-function-and-insulin-signaling-in-bovine-hepatocytes
#2
Zhen Shi, Xiao-Bing Li, Zhi-Cheng Peng, Shou-Peng Fu, Chen-Xu Zhao, Xi-Liang Du, Zhi-Yuan Fang, Zhe Wang, Guo-Wen Liu, Xin-Wei Li
Fatty liver is a major lipid metabolic disease in perinatal dairy cows and is characterized by high blood levels of non-esterified fatty acid (NEFA) and insulin resistance. Berberine (BBR) has been reported to improve insulin sensitivity in mice with hepatic steatosis. Mitochondrial dysfunction is considered a causal factor that induces insulin resistance. This study investigates the underlying mechanism and the beneficial effects of BBR on mitochondrial and insulin signaling in bovine hepatocytes. Revised quantitative insulin sensitivity check index (RQUICKI) of cows with fatty liver was significantly lower than that of healthy cows...
June 6, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29845385/modulation-of-hepatic-inflammation-and-energy-sensing-pathways-in-the-rat-liver-by-high-fructose-diet-and-chronic-stress
#3
Nataša Veličković, Ana Teofilović, Dragana Ilić, Ana Djordjevic, Danijela Vojnović Milutinović, Snježana Petrović, Frederic Preitner, Luc Tappy, Gordana Matić
PURPOSE: High-fructose consumption and chronic stress are both associated with metabolic inflammation and insulin resistance. Recently, disturbed activity of energy sensor AMP-activated protein kinase (AMPK) was recognized as mediator between nutrient-induced stress and inflammation. Thus, we analyzed the effects of high-fructose diet, alone or in combination with chronic stress, on glucose homeostasis, inflammation and expression of energy sensing proteins in the rat liver. METHODS: In male Wistar rats exposed to 9-week 20% fructose diet and/or 4-week chronic unpredictable stress we measured plasma and hepatic corticosterone level, indicators of glucose homeostasis and lipid metabolism, hepatic inflammation (pro- and anti-inflammatory cytokine levels, Toll-like receptor 4, NLRP3, activation of NFκB, JNK and ERK pathways) and levels of energy-sensing proteins AMPK, SIRT1 and peroxisome proliferator-activated receptor gamma coactivator-1 alpha (PGC-1α)...
May 29, 2018: European Journal of Nutrition
https://www.readbyqxmd.com/read/29797227/physical-training-improves-thermogenesis-and-insulin-pathway-and-induces-remodeling-in-white-and-brown-adipose-tissues
#4
Maria Andrea Barbosa, Renata Guerra-Sá, Uberdan Guilherme Mendes De Castro, Wanderson Geraldo de Lima, Robson Augusto Souza Dos Santos, Maria José Campagnole-Santos, Andréia Carvalho Alzamora
Physical training (PT) has been considered as a treatment in metabolic syndrome (MS), since it induces thermogenic activity in brown (BAT) and white (WAT) adipose tissues. We evaluated the therapeutic effect of PT on activity of WAT and BAT in rats with MS induced by high-fat diet (30% lard) for 13 weeks and submitted, for the last 6 weeks, to swimming or kept sedentary (SED) rats. MS-SED rats compared to control diet (CT-SED) rats showed low physical fitness and high levels of glucose, insulin, homeostasis evaluation of insulin resistance (HOMA-IR), homeostasis evaluation of the functional capacity of β-cells (HOMA-β), and blood pressure...
May 25, 2018: Journal of Physiology and Biochemistry
https://www.readbyqxmd.com/read/29789344/pgc-1%C3%AE-as-a-biomarker-of-physical-activity-protective-effect-on-colorectal-cancer
#5
Fernanda De Souza-Teixeira, Jéssica Alonso-Molero, Carlos Ayán, Laura Vilorio-Marques, Antonio J Molina, Carmen González-Donquiles, Veronica Davila-Batista, Tania Fernández-Villa, Jose Antonio de Paz, Vicente Martín
Colorectal cancer is a significant public health concern. As a multistage and multifactorial disease, environmental and genetic factors interact at each stage of the process, and an individual's lifestyle also plays a relevant role. We set out to review the scientific evidence to study the need to investigate the role of the peroxisome proliferator-activated receptor gamma coactivator 1 alpha (PGC-1α) gene as a biomarker of the physical activity's (PA) effect on colorectal cancer. PA is a protective factor against colorectal cancer and usually increases the expression of PGC-1α...
May 22, 2018: Cancer Prevention Research
https://www.readbyqxmd.com/read/29742127/amelioration-of-huntington-s-disease-phenotypes-by-beta-lapachone-is-associated-with-increases-in-sirt1-expression-creb-phosphorylation-and-pgc-1%C3%AE-deacetylation
#6
Mijung Lee, Jae-Jun Ban, Jin-Young Chung, Wooseok Im, Manho Kim
Huntington's disease (HD) is one of the most devastating genetic neurodegenerative disorders with no effective medical therapy. β-Lapachone (βL) is a natural compound obtained from the bark of the Lapacho tree and has been reported to have beneficial effects on various diseases. Sirt1 is a deacetylase of the sirtuin family and deacetylates proteins including the peroxisome proliferator-activated receptor gamma coactivator-1 alpha (PGC-1α) which is associated with mitochondrial respiration and biogenesis...
2018: PloS One
https://www.readbyqxmd.com/read/29723566/triptolide-induced-mitochondrial-damage-dysregulates-fatty-acid-metabolism-in-mouse-sertoli-cells
#7
Yisen Cheng, Gaojian Chen, Li Wang, Jiamin Kong, Ji Pan, Yue Xi, Feihai Shen, Zhiying Huang
Triptolide is a major active ingredient of tripterygium glycosides, used for the therapy of immune and inflammatory diseases. However, its clinical applications are limited by severe male fertility toxicity associated with decreased sperm count, mobility and testicular injures. In this study, we determined that triptoide-induced mitochondrial dysfunction triggered reduction of lactate and dysregulation of fatty acid metabolism in mouse Sertoli cells. First, triptolide induced mitochondrial damage through the suppressing of proliferator-activated receptor coactivator-1 alpha (PGC-1α) activity and protein...
April 30, 2018: Toxicology Letters
https://www.readbyqxmd.com/read/29717226/aldosterone-impairs-mitochondrial-function-in-human-cardiac-fibroblasts-via-a-kinase-anchor-protein-12
#8
Jaime Ibarrola, Rafael Sadaba, Ernesto Martinez-Martinez, Amaia Garcia-Peña, Vanessa Arrieta, Virginia Alvarez, Amaya Fernández-Celis, Alicia Gainza, Victoria Cachofeiro, Enrique Santamaria, Joaquin Fernandez-Irigoyen, Frederic Jaisser, Natalia Lopez-Andres
Aldosterone (Aldo) contributes to mitochondrial dysfunction and cardiac oxidative stress. Using a proteomic approach, A-kinase anchor protein (AKAP)-12 has been identified as a down-regulated protein by Aldo in human cardiac fibroblasts. We aim to characterize whether AKAP-12 down-regulation could be a deleterious mechanism which induces mitochondrial dysfunction and oxidative stress in cardiac cells. Aldo down-regulated AKAP-12 via its mineralocorticoid receptor, increased oxidative stress and induced mitochondrial dysfunction characterized by decreased mitochondrial-DNA and Peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1α) expressions in human cardiac fibroblasts...
May 1, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29710840/nadph-oxidases-and-mitochondria-in-vascular-senescence
#9
REVIEW
Gloria Salazar
Aging is the major risk factor in the development of cardiovascular diseases (CVDs), including hypertension, atherosclerosis, and myocardial infarction. Oxidative stress caused by overproduction of reactive oxygen species (ROS) and/or by reduced expression of antioxidant enzymes is a major contributor to the progression of vascular senescence, pathologic remodeling of the vascular wall, and disease. Both oxidative stress and inflammation promote the development of senescence, a process by which cells stop proliferating and become dysfunctional...
April 29, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29690597/liu-jun-zi-tang-a-potential-multi-herbal-complementary-therapy-for-chemotherapy-induced-neurotoxicity
#10
Chun-Tang Chiou, Kaw-Chen Wang, Ying-Chen Yang, Chuen-Lin Huang, Sien-Hung Yang, Yao-Haur Kuo, Nai-Kuei Huang
Liu Jun Zi Tang (LJZT) has been used to treat functional dyspepsia and depression, suggesting its effects on gastrointestinal and neurological functions. LJZT is currently used as a complementary therapy to attenuate cisplatin-induced side effects, such as dyspepsia. However, its effect on chemotherapy-induced neuropathic pain or neurotoxicity has rarely been studied. Thus, we explored potential mechanisms underlying LJZT protection against cisplatin-induced neurotoxicity. We observed that LJZT attenuated cisplatin-induced thermal hyperalgesia in mice and apoptosis in human neuroblastoma SH-SY5Y cells...
April 23, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29669911/mpc1-is-essential-for-pgc-1%C3%AE-induced-mitochondrial-respiration-and-biogenesis
#11
Eunjin Koh, Young Kyung Kim, Daye Shin, Kyung-Sup Kim
Mitochondrial pyruvate carrier (MPC), which is essential for mitochondrial pyruvate usage, mediates the 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 down-regulated in human renal cell carcinoma (RCC) due to strong suppression of peroxisome proliferator-activated receptor-gamma co-activator (PGC)-1 alpha (PGC-1α)...
May 18, 2018: Biochemical Journal
https://www.readbyqxmd.com/read/29662614/transcriptional-orchestration-of-mitochondrial-homeostasis-in-a-cellular-model-of-pgc-1-related-coactivator-dependent-thyroid-tumor
#12
Solenne Dumont, Soazig Le Pennec, Audrey Donnart, Raluca Teusan, Marja Steenman, Catherine Chevalier, Rémi Houlgatte, Frédérique Savagner
The PGC-1 (Peroxisome proliferator-activated receptor Gamma Coactivator-1) family of coactivators (PGC-1α, PGC-1β, and PRC) plays a central role in the transcriptional control of mitochondrial biogenesis and oxidative phosphorylation (OXPHOS) processes. These coactivators integrate mitochondrial energy production into cell metabolism using complementary pathways. The XTC.UC1 cell line is a mitochondria-rich model of thyroid tumors whose biogenesis is almost exclusively dependent on PRC. Here we aim to propose an integrative view of the cellular pathways regulated by PRC through integration of cDNA and miRNA microarray data and chromatin immunoprecipitation results obtained from XTC...
March 23, 2018: Oncotarget
https://www.readbyqxmd.com/read/29604268/mild-aerobic-training-with-blood-flow-restriction-increases-the-hypertrophy-index-and-musk-in-both-slow-and-fast-muscles-of-old-rats-role-of-pgc-1%C3%AE
#13
Mohammad-Ali Bahreinipour, Siyavash Joukar, Fariborz Hovanloo, Hamid Najafipour, Vida Naderi, Alireza Rajiamirhasani, Saeed Esmaeili-Mahani
AIMS: Existing evidence emphasize the role of mitochondrial dysfunction in sarcopenia which is revealed as loss of skeletal muscle mass and neuromuscular junction remodeling. We assessed the effect of low-intensity aerobic training along with blood flow restriction on muscle hypertrophy index, muscle-specific kinase (MuSK), a pivotal protein of the neuromuscular junction and Peroxisome proliferator-activated receptor gamma co-activator 1-alpha (PGC-1α) in aged male rats. MAIN METHODS: Animals groups were control (CTL), sham (Sh), leg blood flow restriction (BFR), exercise (Ex), sham + exercise (Sh + Ex), and BFR plus exercise (BFR + Ex) groups...
June 1, 2018: Life Sciences
https://www.readbyqxmd.com/read/29559683/plasma-adiponectin-levels-are-correlated-with-body-composition-metabolic-profiles-and-mitochondrial-markers-in-individuals-with-chronic-spinal-cord-injury
#14
Laura C O'Brien, Zachary A Graham, Qun Chen, Edward J Lesnefsky, Christopher Cardozo, Ashraf S Gorgey
STUDY DESIGN: Cross-sectional design. OBJECTIVES: This study examined the relationships between circulating adiponectin levels, body composition, metabolic profile, and measures of skeletal muscle mitochondrial enzyme activity and biogenesis. SETTINGS: Clinical Research in a Medical Center. METHODS: Plasma adiponectin was quantified in 19 individuals with chronic spinal cord injury (SCI). Body composition was evaluated by dual x-ray absorptiometry and magnetic resonance imaging...
March 20, 2018: Spinal Cord
https://www.readbyqxmd.com/read/29557214/current-understanding-and-future-perspectives-of-the-roles-of-sirtuins-in-the-reprogramming-and-differentiation-of-pluripotent-stem-cells
#15
Yi-Chao Hsu, Yu-Ting Wu, Chia-Ling Tsai, Yau-Huei Wei
In mammalian cells, there are seven members of the sirtuin protein family (SIRT1-7). SIRT1, SIRT6, and SIRT7 catalyze posttranslational modification of proteins in the nucleus, SIRT3, SIRT4, and SIRT5 are in the mitochondria and SIRT2 is in the cytosol. SIRT1 can deacetylate the transcription factor SOX2 and regulate induced pluripotent stem cells (iPSCs) reprogramming through the miR-34a-SIRT1-p53 axis. SIRT2 can regulate the function of pluripotent stem cells through GSK3β. SIRT3 can positively regulate PPAR gamma coactivator 1-alpha (PGC-1α) expression during the differentiation of stem cells...
March 2018: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/29531537/injected-human-muscle-precursor-cells-overexpressing-pgc-1-%C3%AE-enhance-functional-muscle-regeneration-after-trauma
#16
Deana Haralampieva, Souzan Salemi, Thomas Betzel, Ivana Dinulovic, Stefanie D Krämer, Roger Schibli, Tullio Sulser, Christoph Handschin, Simon M Ametamey, Daniel Eberli
While many groups demonstrated new muscle tissue formation after muscle precursor cell (MPC) injection, the capacity of these cells to heal muscle damage, for example, sphincter in stress urinary incontinence, in long-term is still limited. Therefore, the first goal of our project was to optimize the functional regenerative potential of hMPC by genetic modification to overexpress human peroxisome proliferator-activated receptor gamma coactivator 1-alpha (hPGC-1 α ), key regulator of exercise-mediated adaptation...
2018: Stem Cells International
https://www.readbyqxmd.com/read/29525531/raspberry-ketone-induces-brown-like-adipocyte-formation-through-suppression-of-autophagy-in-adipocytes-and-adipose-tissue
#17
Sy-Ying Leu, Yung-Chieh Tsai, Wen-Chi Chen, Chih-Hsiung Hsu, Yen-Mei Lee, Pao-Yun Cheng
Promoting white adipose tissue (WAT) to acquire brown-like characteristics is a promising approach for obesity treatment. Although raspberry ketone (RK) has been reported to possess antiobesity activity, its effects on the formation of brown-like adipocytes remain unclear. Therefore, we investigated the effects and underlying mechanism of RK on WAT browning in 3T3-L1 adipocytes and rats with ovariectomy (Ovx)-induced obesity. RK (100 μM) significantly induced browning of 3T3-L1 cells by increasing mitochondrial biogenesis and the expression of browning-specific proteins (PR domain containing 16, PRDM16; peroxisome proliferator-activated receptor gamma coactivator 1-alpha, PGC-1α; uncoupling protein-1, UCP-1) and lipolytic enzymes (hormone-sensitive lipase and adipose triglyceride lipase)...
February 13, 2018: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29502862/peroxisome-proliferator-activated-receptor-gamma-coactivator-1-alpha-as-a-novel-target-for-bipolar-disorder-and-other-neuropsychiatric-disorders
#18
REVIEW
Andrew A Nierenberg, Sharmin A Ghaznavi, Isadora Sande Mathias, Kristen K Ellard, Jessica A Janos, Louisa G Sylvia
Peroxisome proliferator-activated receptor gamma coactivator-1 alpha (PGC-1 alpha) is a protein that regulates metabolism and inflammation by activating nuclear receptors, especially the family of peroxisome proliferator-activated receptors (PPARs). PGC-1 alpha and PPARs also regulate mitochondrial biogenesis, cellular energy production, thermogenesis, and lipid metabolism. Brain energy metabolism may also be regulated in part by the interaction between PGC-1 alpha and PPARs. Because neurodegenerative diseases (Huntington's disease, Parkinson's disease, and amyotrophic lateral sclerosis) and bipolar disorder have been associated with dysregulated mitochondrial and brain energy metabolism, PGC-1 alpha may represent a potential drug target for these conditions...
May 1, 2018: Biological Psychiatry
https://www.readbyqxmd.com/read/29472690/cisplatin-enhances-hepatitis-b-virus-replication-and-pgc-1%C3%AE-expression-through-endoplasmic-reticulum-stress
#19
Xiaosong Li, E Pan, Junke Zhu, Lei Xu, Xuemei Chen, Jingjing Li, Li Liang, Yuan Hu, Jie Xia, Juan Chen, Wannan Chen, Jieli Hu, Kai Wang, Ni Tang, Ailong Huang
Chronic hepatitis B infection remains a serious public health issue worldwide. Hepatitis B virus (HBV) reactivation is commonly reported in patients receiving anticancer therapy, immunosuppressive therapy, or organ and tissue transplantation. However, the precise mechanisms underlying chemotherapeutic agent-related HBV reactivation remain unclear. Here, we report that peroxisome proliferator-activated receptor gamma coactivator 1 alpha (PGC-1α) plays a central role in cisplatin-induced HBV transcription and replication...
February 22, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29433686/gastrodia-elata-alleviates-mutant-huntingtin-aggregation-through-mitochondrial-function-and-biogenesis-mediation
#20
Chuen-Lin Huang, Kaw-Chen Wang, Ying-Chen Yang, Chun-Tang Chiou, Chia-Hui Tan, Yun-Lian Lin, Nai-Kuei Huang
BACKGROUND: According to the Compendium of Materia Medica, Gastrodia elata (GE) Blume is a top-grade herbal medicine frequently used to treat dizziness, headaches, tetanus, and epilepsy, suggesting that it affects neurological functions. Although studies have supported its effects in preventing diverse neurodegenerations such as Huntington's disease (HD), its mechanisms require further investigation. PURPOSE: To investigate the ability of the molecular mechanism of GE to prevent mutant huntingtin (mHTT) protein aggregation by focusing on mitochondrial function and biogenesis, which have been proposed as the therapeutic targets of HD...
January 15, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
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