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https://www.readbyqxmd.com/read/29730342/nf-%C3%AE%C2%BAb-mediated-metabolic-remodelling-in-the-inflamed-heart-in-acute-viral-myocarditis
#1
Alexander H V Remels, Wouter J A Derks, Berta Cillero-Pastor, Koen J P Verhees, Marco C Kelders, Ward Heggermont, Paolo Carai, Georg Summer, Shane R Ellis, Chiel C de Theije, Ron M A Heeren, Stephane Heymans, Ana P Papageorgiou, Marc van Bilsen
Acute viral myocarditis (VM), characterised by leukocytes infiltration and dysfunction of the heart, is an important cause of sudden cardiac death in young adults. Unfortunately, to date, the pathological mechanisms underlying cardiac failure in VM remain incompletely understood. In the current study, we investigated if acute VM leads to cardiac metabolic rewiring and if this process is driven by local inflammation. Transcriptomic analysis of cardiac biopsies from myocarditis patients and a mouse model of VM revealed prominent reductions in the expression of a multitude of genes involved in mitochondrial oxidative energy metabolism...
May 3, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29710840/nadph-oxidases-and-mitochondria-in-vascular-senescence
#2
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/29707604/cyp-450-epoxygenase-derived-epoxyeicosatrienoic-acid-contribute-to-reversal-of-heart-failure-in-obesity-induced-diabetic-cardiomyopathy-via-pgc-1-%C3%AE-activation
#3
S P Singh, J A McClung, L Bellner, J Cao, M Waldman, J Schragenheim, M Arad, E Hochhauser, J R Falck, J A Weingarten, S J Peterson, N G Abraham
We have previously shown that an Epoxyeicosatrienoic Acid (EET) -agonist has pleiotropic effects and reverses cardiomyopathy by decreasing inflammatory molecules and increasing antioxidant signaling. We hypothesized that administration of an EET agonist would increase Peroxisome proliferator-activated receptor-gamma coactivator (PGC-1α), which controls mitochondrial function and induction of HO-1 and negatively regulates the expression of the proinflammatory adipokines CCN3/NOV in cardiac and pericardial tissues...
2018: Cardiovascular Pharmacology: Open Access
https://www.readbyqxmd.com/read/29690597/liu-jun-zi-tang-a-potential-multi-herbal-complementary-therapy-for-chemotherapy-induced-neurotoxicity
#4
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/29681853/caffeine-promotes-conversion-of-palmitic-acid-to-palmitoleic-acid-by-inducing-expression-of-fat-5-in-caenorhabditis-elegans-and-scd1-in-mice
#5
Xiaocui Du, Qin Huang, Yun Guan, Ming Lv, Xiaofang He, Chongye Fang, Xuanjun Wang, Jun Sheng
The synthesis and metabolism of fatty acids in an organism is related to many biological processes and is involved in several diseases. The effects of caffeine on fatty acid synthesis and fat storage in Caenorhabditis elegans and mice were studied. After 6 h of food deprivation, adult C. elegans were treated with 0.1 mg/mL caffeine for 24 h. Quantitative reverse-transcription polymerase chain reaction showed that, among all the genes involved in fat accumulation, the mRNA expression of fat-5 in caffeine-treated C...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29669911/mpc1-is-essential-for-pgc-1%C3%AE-induced-mitochondrial-respiration-and-biogenesis
#6
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/29665239/fbxw7-regulates-a-mitochondrial-transcription-program-by-modulating-mitf
#7
Franco Abbate, Brateil Badal, Karen Mendelson, Iraz Toprak Aydin, Madhavika N Serasinghe, Ramiz Iqbal, Jarvier Mohammed, Alexander Solovyov, Benjamin D Greenbaum, Jerry E Chipuk, Julide Tok Celebi
FBXW7 is well characterized as a tumor suppressor in many human cancers including melanoma; however, the mechanisms of tumor suppressive function have not been fully elucidated. We leveraged two distinct RNA sequencing datasets: human melanoma cell lines (n=10) with control versus silenced FBXW7 and a cohort of human melanoma tumor samples (n=51) in order to define the transcriptomic fingerprint regulated by FBXW7. Here, we report that loss of FBXW7 enhances a mitochondrial gene transcriptional program that is dependent on MITF in human melanoma and confers poor patient outcomes...
April 17, 2018: Pigment Cell & Melanoma Research
https://www.readbyqxmd.com/read/29662614/transcriptional-orchestration-of-mitochondrial-homeostasis-in-a-cellular-model-of-pgc-1-related-coactivator-dependent-thyroid-tumor
#8
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/29656453/chlorogenic-acid-protects-against-oxldl-induced-oxidative-damage-and-mitochondrial-dysfunction-by-modulating-sirt1-in-endothelial-cells
#9
Kun-Ling Tsai, Ching-Hsia Hung, Shih-Hung Chan, Pei-Ling Hsieh, Hsiu-Chung Ou, Yung-Hsin Cheng, Pei-Ming Chu
SCOPE: Endothelial dysfunction is an important mechanism in the development of atherosclerosis and is thought to be critical for predicting cardiovascular diseases. Previous reports suggested that Chlorogenic acid (CGA) is a potent antioxidant and anti-inflammatory compound. The molecular mechanisms underlying the inhibitory effects of CGA on oxLDL-induced oxidative injuries in human endothelial cells are still largely unknown. This study aimed to test the hypothesis that CGA protects against oxLDL-facilitated oxidative stress by upregulating SIRT1 and to explore the role of AMPK/PGC-1 pathway and mitochondrial biogenesis...
April 15, 2018: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/29602880/exercise-increases-mitochondrial-pgc-1-%C3%AE-content-and-promotes-nuclear-mitochondrial-cross-talk-to-coordinate-mitochondrial-biogenesis
#10
Adeel Safdar, Jonathan P Little, Andrew J Stokl, Bart P Hettinga, Mahmood Akhtar, Mark A Tarnopolsky
No abstract text is available yet for this article.
March 30, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29599799/peroxisome-proliferator-activated-receptor-%C3%AE-and-pgc-1-%C3%AE-in-cancer-dual-actions-as-tumor-promoter-and-suppressor
#11
REVIEW
Seong-Hoon Yun, Sang-Heum Han, Joo-In Park
Peroxisome proliferator-activated receptor γ (PPAR γ ) is part of a nuclear receptor superfamily that regulates gene expression involved in cell differentiation, proliferation, immune/inflammation response, and lipid metabolism. PPAR γ coactivator-1 α (PGC-1 α ), initially identified as a PPAR γ -interacting protein, is an important regulator of diverse metabolic pathways, such as oxidative metabolism and energy homeostasis. The role of PGC-1 α in diabetes, neurodegeneration, and cardiovascular disease is particularly well known...
2018: PPAR Research
https://www.readbyqxmd.com/read/29576853/quercetin-prevents-diastolic-dysfunction-induced-by-a-high-cholesterol-diet-role-of-oxidative-stress-and-bioenergetics-in-hyperglycemic-rats
#12
Rodrigo L Castillo, Emilio A Herrera, Alejandro Gonzalez-Candia, Marjorie Reyes-Farias, Nicole de la Jara, Juan Pedro Peña, Catalina Carrasco-Pozo
Alterations in cardiac energy metabolism play a key role in the pathogenesis of diabetic cardiomyopathy. Hypercholesterolemia associated with bioenergetic impairment and oxidative stress has not been well characterized in the cardiac function under glycemic control deficiency conditions. This work aimed to determine the cardioprotective effects of quercetin (QUE) against the damage induced by a high-cholesterol (HC) diet in hyperglycemic rats, addressing intracellular antioxidant mechanisms and bioenergetics...
2018: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29560628/-electroacupuncture-plus-gastrodin-improves-learning-memory-ability-possibly-by-up-regulating-expression-of-sirt-1-and-pgc-1-%C3%A9-in-hippocampal-ca-1-region-of-alzheimer-s-disease-rats
#13
Rui Huang, Feng Wu, Jian Zhao, Huai-Bin Li, Jian Ding, Ke-Ren Xiong
OBJECTIVE: To observe the effect of electroacupuncture (EA) combined with Gastrodin on learning-memory ability and expression of silent information regulator 2 homologous protein 1(SIRT 1) and peroxisome proliferator activated receptor γ coactivator (PGC-1 ɑ) of hippocampal CA 1 region in Alzheimer's disease(AD) rats, so as to explore its mechanism under-lying improvement of AD. METHODS: Sixty male SD rats were randomly divided into normal control (normal), sham operation (sham), model, EA, Gastrodin and EA+ Gastrodin groups ( n =10 in each)...
March 25, 2018: Zhen Ci Yan Jiu, Acupuncture Research
https://www.readbyqxmd.com/read/29531537/injected-human-muscle-precursor-cells-overexpressing-pgc-1-%C3%AE-enhance-functional-muscle-regeneration-after-trauma
#14
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/29502862/peroxisome-proliferator-activated-receptor-gamma-coactivator-1-alpha-as-a-novel-target-for-bipolar-disorder-and-other-neuropsychiatric-disorders
#15
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/29388552/pgc-1-the-energetic-regulator-in-cardiac-metabolism
#16
Wencheng Di, Jianjun Lv, Shuai Jiang, Chenxi Lu, Zhi Yang, Zhiqiang Ma, Wei Hu, Yang Yang, Biao Xu
The peroxisome proliferator-activated receptor γ (PPARγ) coactivator-1s (PGC-1s) can induce the expression of several downstream genes that play pivotal roles in the regulation of mitochondrial biogenesis and metabolism in the heart. Moreover, PGC-1 signaling pathways have also been reported to play a critical role in cardioprotection. Given the significance of PGC-1 coactivators, we summarize the current literature on the molecular mechanisms and roles of PGC-1s in cardiac metabolism. Thus, in this review, we first introduce the basic knowledge regarding PGC-1 signaling pathways...
February 1, 2018: Current Issues in Molecular Biology
https://www.readbyqxmd.com/read/29306019/sirt1-and-hif1%C3%AE-signaling-in-metabolism-and-immune-responses
#17
Qing Yu, Lin Dong, Yan Li, Gaungwei Liu
SIRT1 and HIF1α are regarded as two key metabolic sensors in cellular metabolism pathways and play vital roles in influencing immune responses. SIRT1 and HIF1α regulate immune responses in metabolism-dependent and -independent ways. Here, we summarized the recent knowledge of SIRT1 and HIF1α signaling in metabolism and immune responses. HIF1α is a direct target of SIRT1. Sometimes, SIRT1 and HIF1α cooperate or act separately to mediate immune responses. In innate immune responses, SIRT1 can regulate the glycolytic activity of myeloid-derived suppressor cells (MDSCs) and influence MDSC functional differentiation...
April 1, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29282717/intracerebroventricular-administration-of-cystatin-c-ameliorates-disease-in-sod1-linked-amyotrophic-lateral-sclerosis-mice
#18
Seiji Watanabe, Okiru Komine, Fumito Endo, Keisuke Wakasugi, Koji Yamanaka
Cystatin C (CysC) is a major protein component of Bunina bodies, which are a pathological hallmark observed in the remaining motor neurons of patients with amyotrophic lateral sclerosis (ALS). Dominant mutations in the SOD1 gene, encoding Cu/Zn superoxide dismutase (SOD1), are causative for a subset of inherited ALS cases. Our previous study showed that CysC exerts a neuroprotective effect against mutant SOD1-mediated toxicity in vitro; however, in vivo evidence of the beneficial effects mediated by CysC remains obscure...
December 28, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/29243009/adrenaline-induces-mitochondrial-biogenesis-in-rat-liver
#19
Gaetana Napolitano, Daniela Barone, Sergio Di Meo, Paola Venditti
We studied the effects of adrenaline administration and depletion (induced by reserpine) on rat liver oxidative metabolism. We showed that adrenaline increases, and reserpine decreases aerobic capacity (inferred by cytochrome oxidase activity) in tissue modifying the hepatic content of mitochondrial proteins without changing mitochondrial aerobic capacity. The changes in tissue cytochrome oxidase activity, which agreed with the expression levels of factors involved in mitochondrial biogenesis, such as PGC-1, NRF-1, and NRF-2, were associated with similar changes in tissue and mitochondrial State 3 respiration...
February 2018: Journal of Bioenergetics and Biomembranes
https://www.readbyqxmd.com/read/29140431/microvascular-adaptations-to-exercise-protective-effect-of-pgc-1-alpha
#20
Andrew O Kadlec, Chad Barnes, Matthew J Durand, David D Gutterman
BACKGROUND: Sedentary behavior and obesity are major risk factors for cardiovascular disease. Regular physical activity has independent protective effects on the cardiovascular system, but the mechanisms responsible remain elusive. Recent studies suggest that the protein peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1α) participates in the response to exercise training. We hypothesized that the arterioles of athletes maintain dilation to flow despite combined inhibition of multiple vasodilators, but loss of PGC-1α renders these vessels susceptible to inhibition of a single vasodilator pathway...
November 11, 2017: American Journal of Hypertension
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