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https://www.readbyqxmd.com/read/28912098/melatonin-mediated-upregulation-of-sirt3-attenuates-sodium-fluoride-induced-hepatotoxicity-by-activating-the-mt1-pi3k-akt-pgc-1%C3%AE-signaling-pathway
#1
Chao Song, Jiamin Zhao, Beibei Fu, Dan Li, Tingchao Mao, Wei Peng, Haibo Wu, Yong Zhang
Mitochondrial reactive oxygen species (ROS) production has been implicated in the pathogenesis of fluoride toxicity in liver. Melatonin, an indolamine synthesized in the pineal gland, was previously shown to protect against sodium fluoride (NaF)-induced hepatotoxicity. This study investigated the protective effects of melatonin pretreatment on NaF-induced hepatotoxicity and elucidates the potential mechanism of melatonin-mediated protection. Reducing mitochondrial ROS by melatonin substantially attenuated NaF-induced NADPH oxidase 4 (Nox4) upregulation and cytotoxicity in L-02 cells...
September 11, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28883902/sirt1-activation-by-resveratrol-alleviates-cardiac-dysfunction-via-mitochondrial-regulation-in-diabetic-cardiomyopathy-mice
#2
Sai Ma, Jing Feng, Ran Zhang, Jiangwei Chen, Dong Han, Xiang Li, Bo Yang, Xiujuan Li, Miaomiao Fan, Congye Li, Zuhong Tian, Yabin Wang, Feng Cao
BACKGROUND: Diabetic cardiomyopathy (DCM) is a major threat for diabetic patients. Silent information regulator 1 (SIRT1) has a regulatory effect on mitochondrial dynamics, which is associated with DCM pathological changes. Our study aims to investigate whether resveratrol, a SRIT1 activator, could exert a protective effect against DCM. METHODS AND RESULTS: Cardiac-specific SIRT1 knockout (SIRT1(KO)) mice were generated using Cre-loxP system. SIRT1(KO) mice displayed symptoms of DCM, including cardiac hypertrophy and dysfunction, insulin resistance, and abnormal glucose metabolism...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28346099/development-of-novel-cell-lines-for-high-throughput-screening-to-detect-estrogen-related-receptor-alpha-modulators
#3
Christina T Teng, Jui-Hua Hsieh, Jinghua Zhao, Ruili Huang, Menghang Xia, Negin Martin, Xiaohua Gao, Darlene Dixon, Scott S Auerbach, Kristine L Witt, B Alex Merrick
Estrogen-related receptor alpha (ERRα), the first orphan nuclear receptor discovered, is crucial for the control of cellular energy metabolism. ERRα and its coactivator, peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1α), are required for rapid energy production in response to environmental challenges. They have been implicated in the etiology of metabolic disorders such as type 2 diabetes and metabolic syndrome. ERRα also plays a role in the pathogenesis of breast cancer. Identification of compounds that modulate ERRα signaling may elucidate environmental factors associated with these diseases...
July 2017: SLAS Discovery
https://www.readbyqxmd.com/read/28252622/-risk-of-death-from-circulatory-diseases-in-a-cohort-of-patients-exposed-to-chronic-radiation
#4
T V Azizova, E S Grigoryeva, N Hunter, M V Pikulina, M B Moseeva
AIM: To assess mortality from circulatory diseases (CD) in a cohort of workers exposed occupationally to chronic radiation in relation to external and internal exposure, by taking into account known non-radiation risk factors (RFs), such as smoking (including smoking index), alcohol consumption, hypertension, and body mass index. SUBJECTS AND METHODS: Mortality from CD (ICD-10: I00 - I99) was studied in a cohort of 22,377 nuclear power plant («Mayak» Production Association) workers exposed occupationally to chronic radiation...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/28119057/immunohistochemical-profiling-of-estrogen-related-receptor-gamma-in-rat-brain-and-colocalization-with-estrogen-receptor-alpha-in-the-preoptic-area
#5
Takashi Tanida, Ken Ichi Matsuda, Shunji Yamada, Mitsuhiro Kawata, Masaki Tanaka
Estrogen-related receptor (ERR) is a member of the nuclear receptor superfamily that has strong homology with estrogen receptor (ER) α. Despite the lack of endogenous ligands, ERR serves as transcription factors through their constitutively active structure with or without interaction with ERα. Among the three subtypes of ERR (α, β, and γ), ERRγ is highly expressed in brain, but the distribution of ERRγ is poorly characterized. Therefore, we investigated ERRγ immunoreactivity throughout the rostro-caudal axis in rat brain...
March 15, 2017: Brain Research
https://www.readbyqxmd.com/read/28102944/a-simple-and-robust-trajectory-based-stereotactic-radiosurgery-treatment
#6
Byron Wilson, Karl Otto, Ermias Gete
INTRODUCTION: We present a Trajectory-based Volumetric Modulated Arc Therapy (TVMAT) technique for Stereotactic Radiosurgery (SRS) that takes advantage of a modern linacs ability to modulate dose rate and move the couch dynamically. In addition, we investigate the quality of the developed TVMAT method and the dosimetric accuracy of the technique. METHODS: The main feature of the TVMAT technique is a standard beam trajectory formed by dynamic motion of the treatment couch and the linac gantry...
January 2017: Medical Physics
https://www.readbyqxmd.com/read/28024757/expression-of-inflammatory-cytokines-and-chemokines-in-replanted-permanent-teeth-with-external-root-resorption
#7
Juliana Vilela Bastos, Tarcilia A Silva, Enrico A Colosimo, Maria Ilma S Côrtes, Daniela Augusta B Ferreira, Eugenio Marcos A Goulart, Ricardo S Gomez, Walderez O Dutra
INTRODUCTION: The progressive forms of inflammatory external root resorption (IERR) and replacement external root resorption (RERR) are serious complications and the main causes of tooth loss after replantation. This study aimed to investigate the expression pattern of inflammatory molecules in extracted human teeth presenting with external root resorption (ERR) after replantation. METHODS: Root fragments from 22 teeth showing IERR and 20 teeth with RERR were triturated using a homogenizer to extract inflammatory molecules...
December 23, 2016: Journal of Endodontics
https://www.readbyqxmd.com/read/27805390/insights-of-a-lead-optimization-study-and-biological-evaluation-of-novel-4-hydroxytamoxifen-analogs-as-estrogen-related-receptor-%C3%AE-err%C3%AE-inverse-agonists
#8
Jina Kim, Seo Yeon Woo, Chun Young Im, Eun Kyung Yoo, Seungmi Lee, Hyo-Ji Kim, Hee-Jong Hwang, Joong-Heui Cho, Won Seok Lee, Heeseok Yoon, Shinae Kim, Oh-Bin Kwon, Hayoung Hwang, Kyung-Hee Kim, Jae-Han Jeon, Thoudam Debraj Singh, Sang Wook Kim, Sung Yeoun Hwang, Hueng-Sik Choi, In-Kyu Lee, Seong Heon Kim, Yong Hyun Jeon, Jungwook Chin, Sung Jin Cho
We evaluated the in vitro pharmacology as well as the absorption, distribution, metabolism, excretion, and toxicity (ADMET) properties of chemical entities that not only were shown to be highly selective agonists for ERRγ but also exhibited enhanced pharmacokinetic profile compared with 3 (GSK5182). 6g and 10b had comparable potency to 3 and were far more selective for ERRγ over the ERRα, -β, and ERα. The in vivo pharmacokinetic profiles of 6g and 10b were further evaluated, as they possessed superior in vitro ADMET profiles compared to the other compounds...
November 23, 2016: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/27690175/risk-of-hematologic-malignancies-in-the-offspring-of-female-workers-of-the-mayak-nuclear-facility-in-the-southern-urals-russian-federation
#9
I Deltour, Y Tsareva, S J Schonfeld, V V Vostrotin, P Okatenko, M Sokolnikov, J Schüz
Long-term effects of in utero exposure to ionizing radiation remain poorly quantified in humans. In this study, the risk of hematologic malignancies was investigated in offspring of female workers of the Mayak Production Association, a large Russian nuclear facility. Excess relative risks (ERR) for exposure to gamma radiation and plutonium were estimated in a cohort of 8,466 offspring who were born between January 1, 1948 and December 31, 1988 and followed until 2009. An unstable linear ERR of 1.12 (95% CI 0...
October 2016: Radiation Research
https://www.readbyqxmd.com/read/27631102/radiation-risks-of-leukemia-lymphoma-and-multiple-myeloma-incidence-in-the-mayak-cohort-1948-2004
#10
Irina S Kuznetsova, Elena V Labutina, Nezahat Hunter
Incidence of all types of lymphatic and hematopoietic cancers, including Hodgkin's lymphoma, non-Hodgkin's lymphoma, multiple myeloma, acute and chronic myeloid leukemia (AML and CML respectively), chronic lymphocytic leukemia (CLL) and other forms of leukemia have been studied in a cohort of 22,373 workers employed at the Mayak Production Association (PA) main facilities during 536,126 person-years of follow-up from the start of employment between 1948 and 1982 to the end of 2004. Risk assessment was performed for both external gamma-radiation and internal alpha-exposure of red bone marrow due to incorporated Pu-239 using Mayak Workers Dosimetry System 2008 taking into account non-radiation factors...
2016: PloS One
https://www.readbyqxmd.com/read/27271583/aqueous-extract-of-paris-polyphylla-aepp-inhibits-ovarian-cancer-via-suppression-of-peroxisome-proliferator-activated-receptor-gamma-coactivator-pgc-1alpha
#11
Chia-Woei Wang, Cheng-Jeng Tai, Chen-Yen Choong, Yu-Chun Lin, Bao-Hong Lee, Yeu-Ching Shi, Chen-Jei Tai
Chemotherapy, a major approach was used in carcinoma treatment, always involves the development of drug resistance as well as side-effects that affect the quality of patients' lives. An association between epithelial-mesenchymal transition (EMT) and chemotherapy resistance was established recently. We demonstrate in this paper that the aqueous extract of Paris polyphylla (AEPP)-a traditional Chinese medicine-can be used in various cancer types for suppression of carcinogenesis. We evaluated the suppressions of EMT and mitochondrial activity by AEPP treatment in a high-glucose (HG) induced-human ovarian carcinoma cell line (OVCAR-3 cells)...
June 3, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27236015/synthesis-and-biological-evaluation-of-novel-4-hydroxytamoxifen-analogs-as-estrogen-related-receptor-gamma-inverse-agonists
#12
Jina Kim, Jungwook Chin, Chun Young Im, Eun Kyung Yoo, Seoyeon Woo, Hee Jong Hwang, Joong-Heui Cho, Kyung-Ah Seo, Jaeyoung Song, Hayoung Hwang, Kyung-Hee Kim, Nam Doo Kim, Suk Kyoon Yoon, Jae-Han Jeon, Seung-Yun Yoon, Yong Hyun Jeon, Hueng-Sik Choi, In-Kyu Lee, Seong Heon Kim, Sung Jin Cho
Estrogen-related receptor gamma (ERRγ) has recently been recognized as an attractive target for treating inflammation, cancer, and metabolic disorders. Herein, we discovered and demonstrated the in vitro pharmacology as well as the absorption, distribution, metabolism, excretion, and toxicity (ADMET) properties of chemical entities that could act as highly selective inverse agonists for ERRγ. The results were comparable to those for GSK5182 (4), a leading ERRγ inverse agonist ligand. Briefly, the half-maximal inhibitory concentration (IC50) range of the synthesized compounds for ERRγ was 0...
September 14, 2016: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/27220353/exercise-like-effects-by-estrogen-related-receptor-gamma-in-muscle-do-not-prevent-insulin-resistance-in-db-db-mice
#13
Pierre-Marie Badin, Isabelle K Vila, Danesh H Sopariwala, Vikas Yadav, Sabina Lorca, Katie Louche, Eun Ran Kim, Qingchun Tong, Min Sup Song, Cedric Moro, Vihang A Narkar
Dissecting exercise-mimicking pathways that can replicate the benefits of exercise in obesity and diabetes may lead to promising treatments for metabolic disorders. Muscle estrogen-related receptor gamma (ERRγ) is induced by exercise, and when over-expressed in the skeletal muscle mimics exercise by stimulating glycolytic-to-oxidative myofiber switch, mitochondrial biogenesis and angiogenesis in lean mice. The objective of this study was to test whether muscle ERRγ in obese mice mitigates weight gain and insulin resistance...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27214280/the-metabolic-co-regulator-pgc1%C3%AE-suppresses-prostate-cancer-metastasis
#14
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
https://www.readbyqxmd.com/read/27056719/risk-of-solid-cancer-in-the-offspring-of-female-workers-of-the-mayak-nuclear-facility-in-the-southern-urals-russian-federation
#15
Y Tsareva, I Deltour, M Sokolnikov, P Okatenko, V V Vostrotin, S J Schonfeld, J Schüz
Studies of cancer risk following in utero exposure to ionizing radiation are limited in number, particularly for adult-onset cancers, and the evidence is unclear. In the present study, the risk of solid cancer incidence following in utero radiation exposure is examined among 8466 offspring of female nuclear workers at one of the largest nuclear facilities (Mayak Production Association) in the Russian Federation. Poisson regression methods were used to estimate excess relative risks (ERRs) per Gray (Gy). Mother's uterine gamma dose served as a surrogate for fetal gamma dose...
August 2016: Radiation and Environmental Biophysics
https://www.readbyqxmd.com/read/27038254/bisphenol-a-increases-the-migration-and-invasion-of-triple-negative-breast-cancer-cells-via-oestrogen-related-receptor-gamma
#16
Xiao-Lin Zhang, Na Liu, Shan-Fan Weng, Hong-Sheng Wang
Triple-negative breast cancer (TNBC) is characterized by great metastasis and invasion capability. Our study revealed that nanomolar bisphenol A (BPA), one of the most ubiquitous endocrine disruptors, can increase wound closure and invasion of both MDA-MB-231 and BT-549 cells. BPA treatment can increase protein and mRNA expression of matrix metalloproteinase-2 (MMP-2) and MMP-9, while had no effect on the expression of vimentin (Vim) and fibronectin (FN) in TNBC cells. The expression of G-protein-coupled receptor (GPER), which has been suggested to mediate rapid oestrogenic signals, was not varied in BPA-treated MDA-MB-231 and BT-549 cells...
October 2016: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/26994996/risk-of-lower-extremity-arterial-disease-in-a-cohort-of-workers-occupationally-exposed-to-ionizing-radiation-over-a-prolonged-period
#17
Tamara V Azizova, Maria V Bannikova, Evgenia S Grigorieva, Yaroslava P Bagaeva, Elena V Azizova
In this study the incidence risk of lower extremity arterial disease (LEAD; international classification of diseases version 9 code 440.2) was assessed in a cohort of workers occupationally exposed to radiation over a prolonged period. The study cohort includes 22,377 workers of the Mayak Production Association (25% of whom are females) first employed at one of the main facilities in 1948-1982 and followed up to the end of 2008. Dose estimates used in the study are provided by Mayak Worker Dosimetry System 2008...
May 2016: Radiation and Environmental Biophysics
https://www.readbyqxmd.com/read/26602383/pgc-1%C3%AE-regulates-her2-overexpressing-breast-cancer-cells-proliferation-by-metabolic-and-redox-pathways
#18
Vanessa Jacob Victorino, W A Barroso, A K M Assunção, V Cury, I C Jeremias, R Petroni, B Chausse, S K Ariga, A C S A Herrera, C Panis, T M Lima, H P Souza
Breast cancer is a prevalent neoplastic disease among women worldwide which treatments still present several side effects and resistance. Considering that cancer cells present derangements in their energetic homeostasis, and that peroxisome proliferator-activated receptor- gamma coactivator 1 (PGC-1) is crucial for cellular metabolism and redox signaling, the main objective of this study was to investigate whether there is a relationship between PGC-1 expression, the proliferation of breast cancer cells and the mechanisms involved...
May 2016: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/26565704/hydrogen-rich-saline-attenuates-lipopolysaccharide-induced-heart-dysfunction-by-restoring-fatty-acid-oxidation-in-rats-by-mitigating-c-jun-n-terminal-kinase-activation
#19
Bingdong Tao, Lidan Liu, Ni Wang, Dongyi Tong, Wei Wang, Jin Zhang
Sepsis is common in intensive care units (ICU) and is associated with high mortality. Cardiac dysfunction complicating sepsis is one of the most important causes of this mortality. This dysfunction is due to myocardial inflammation and reduced production of energy by the heart. A number of studies have shown that hydrogen-rich saline (HRS) has a beneficial effect on sepsis. Therefore, we tested whether HRS prevents cardiac dysfunction by increasing cardiac energy. Four groups of rats received intraperitoneal injections of one of the following solutions: normal saline (NS), HRS, lipopolysaccharide (LPS), and LPS plus HRS...
December 2015: Shock
https://www.readbyqxmd.com/read/26464440/ror%C3%AE-switches-transcriptional-mode-of-err%C3%AE-that-results-in-transcriptional-repression-of-cyp2e1-under-ethanol-exposure
#20
Yong-Hyun Han, Don-Kyu Kim, Tae-Young Na, Na-Lee Ka, Hueng-Sik Choi, Mi-Ock Lee
Increased cytochrome P450 2E1 (CYP2E1) expression is the main cause of oxidative stress, which exacerbates alcoholic liver diseases (ALDs). Estrogen-related receptor gamma (ERRγ) induces CYP2E1 expression and contributes to enhancing alcohol-induced liver injury. Retinoic acid-related orphan receptor alpha (RORα) has antioxidative functions; however, potential cross-talk between ERRγ and RORα in the regulation of CYP2E1 has not been studied. We report that RORα suppressed ERRγ-mediated CYP2E1 expression...
February 18, 2016: Nucleic Acids Research
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