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https://www.readbyqxmd.com/read/28812436/the-mechanism-of-protective-effect-of-crocin-against-liver-mitochondrial-toxicity-caused-by-arsenic-iii
#1
Bahareh Sadat Yousefsani, Jalal Pourahmad, Hossein Hosseinzadeh
In this study, we want to understand whether crocin could prevent mitochondrial damage caused by As III. For this purpose, we determined different mitochondrial toxicity endpoints caused by As III. We evaluated mitochondrial ROS formation, lipid peroxidation, mitochondrial membrane potential collapse, mitochondrial outer membrane integrity and cytochrome c release. Our results showed that pretreatment with crocin at a concentration of 25 µg/ml significantly (P < 0.001) reduced As III induced mitochondrial ROS formation, lipid peroxidation, mitochondrial membrane potential collapse and mitochondrial swelling...
August 16, 2017: Toxicology Mechanisms and Methods
https://www.readbyqxmd.com/read/28811603/2-4-6-trinitrotoluene-induces-apoptosis-via-ros-regulated-mitochondrial-dysfunction-and-endoplasmic-reticulum-stress-in-hepg2-and-hep3b-cells
#2
Hung-Yu Liao, Chih-Ming Kao, Chao-Ling Yao, Po-Wei Chiu, Chun-Chen Yao, Ssu-Ching Chen
2,4,6-trinitrotoluene (TNT) has been reported to cause numerous adverse effects. However, the detailed molecular mechanisms underlying TNT-induced liver toxicity need to be elucidated. In this study, we used HepG2 (p53wt) and Hep3B (p53null) cell lines to investigate the cytotoxic effects of TNT. At first, we found that TNT significantly decreased cell viability and induced DNA damage. Thereafter, through transcriptomic analysis, we observed that the diverse biological functions affected included mitochondrial dysfunction and endoplasmic reticulum (ER) stress...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28810614/evolution-of-correlation-between-helicobacter-pylori-infection-and-autoimmune-liver-disease
#3
Xin-Guo Peng, Yu-Yuan Li, Hui-Ting Chen, Yan Zhou, Jian-Guo Ma, Hong-Min Yin
The present study was planned to evaluate correlation between Helicobacter pylori (HP) infection and autoimmune liver disease (AILD). A total of 60 patients diagnosed with AILD in Affiliated Hospital of Binzhou Medical College were continuously enrolled in the present study. HP infection was detected by 13C-urea breath test. The levels of anti-myeloperoxidase were tested by ELISA. The positive rate of anti-nuclear antibody (ANA), anti-mitochondrial antibody (AMA), anti-smooth muscle antibody (SMA) and anti-neutrophil cytoplasm antibody (ANCA) were tested by indirect immunofluorescence...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28810534/thymoquinone-prevents-endoplasmic-reticulum-stress-and-mitochondria-induced-apoptosis-in-a-rat-model-of-partial-hepatic-warm-ischemia-reperfusion
#4
Ahlem Bouhlel, Ben Mosbah, Hadj Abdallah, Catherine Ribault, Roselyne Viel, Saber Mannaï, Anne Corlu, Ben Abdennebi
This study was undertaken to evaluate the protective effect of thymoquinone (TQ), the bioactive compound of Nigella sativa seeds, against warm ischemia-reperfusion (I/R) injury in liver. Rats were given an oral administration of a vehicle solution (sham group) or TQ at the appropriate dose (10, 20, 30 and 40mg/kg) for ten days consecutively. Following, they were subjected to 60min of partial hepatic ischemia followed by 24h of reperfusion. .Transaminase activities, histopathological changes, TNFα and antioxidant parameters were evaluated...
August 11, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28809727/models-of-non-alcoholic-fatty-liver-disease-and-potential-translational-value-the-effects-of-3-5-l-diiodothyronine
#5
Elena Grasselli, Laura Canesi, Piero Portincasa, Adriana Voci, Laura Vergani, Ilaria Demori
Non-alcoholic fatty liver disease (NAFLD) is the most common liver disorder in industrialized countries and is associated with increased risk of cardiovascular, hepatic and metabolic diseases. Molecular mechanisms on the root of the disrupted lipid homeostasis in NAFLD and potential therapeutic strategies can benefit of in vivo and in vitro experimental models of fatty liver. Here, we describe the high fat diet (HFD)-fed rat in vivo model, and two in vitro models, the primary cultured rat fatty hepatocytes or the FaO rat hepatoma fatty cells, mimicking human NAFLD...
August 8, 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/28808064/obesity-and-aging-diminish-sirt1-mediated-deacetylation-of-sirt3-leading-to-hyperacetylation-and-decreased-activity-and-stability-of-sirt3
#6
Sanghoon Kwon, Sunmi Seok, Peter Yau, Xiaoling Li, Byron Kemper, Jongsook Kim Kemper
Sirtuin 3 (SIRT3) deacetylates and regulates many mitochondrial proteins to maintain health, but its functions are depressed in aging and obesity. The best-studied sirtuin, SIRT1, counteracts aging- and obesity-related diseases by deacetylating many proteins, but whether SIRT1 has a role in deacetylating and altering the function of SIRT3 is unknown. Here we show that SIRT3 is reversibly acetylated in the mitochondria and unexpectedly is a target of SIRT1 deacetylation. SIRT3 is hyperacetylated in aged and obese mice, in which SIRT1 activity is low, and SIRT3 acetylation at K57 inhibits its deacetylase activity and promotes protein degradation...
August 14, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28807823/dietary-supplementation-with-acetyl-l-carnitine-counteracts-age-related-alterations-of-mitochondrial-biogenesis-dynamics-and-antioxidant-defenses-in-brain-of-old-rats
#7
Luigi Nicassio, Flavio Fracasso, Giuseppe Sirago, Clara Musicco, Anna Picca, Emanuele Marzetti, Riccardo Calvani, Palmiro Cantatore, Maria Nicola Gadaleta, Vito Pesce
We previously reported the ability of dietary supplementation with acetyl-l-carnitine (ALCAR) to prevent age-related decreases of mitochondrial biogenesis in skeletal muscle and liver of old rats. Here, we investigate the effects of ALCAR supplementation in cerebral hemispheres and cerebellum of old rats by analyzing several parameters linked to mitochondrial biogenesis, mitochondrial dynamics and antioxidant defenses. We measured the level of the coactivators PGC-1α and PGC-1β and of the factors regulating mitochondrial biogenesis, finding an age-related decrease of PGC-1β, whereas PGC-1α level was unvaried...
August 11, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28807098/protective-effect-of-ozone-against-hemiscorpius-lepturus-envenomation-in-mice
#8
Parvaneh Naserzadeh, Farshad Shahi, Delavar Shahbazzadeh, Mostafa Ghanei, Khadijeh Ashtari, Yoones Panahi, Mir-Jamal Hosseini, Morteza Izadi
OBJECTIVE: Scorpion (Hemiscorpius lepturus) stings are a public health concern in Iran, particularly in south and southwestern regions of Iran. The gold standard for the treatment of a scorpion sting is anti-venom therapy. However, immunotherapy can have serious side effects, such as anaphylactic shock (which can sometimes even lead to death). The aim of the current study was to demonstrate the protective effect of ozone against toxicity induced by Hemiscorpius lepturus (H. lepturus) venom in mice...
August 2017: Biomedical and Environmental Sciences: BES
https://www.readbyqxmd.com/read/28806642/circulating-follicular-helper-t-cells-presented-distinctively-different-responses-toward-bacterial-antigens-in-primary-biliary-cholangitis
#9
Zun-Qiang Zhou, Da-Nian Tong, Jiao Guan, Mei-Fang Li, Qi-Ming Feng, Min-Jie Zhou, Zheng-Yun Zhang
Primary biliary cholangitis (PBC) is a chronic and progressive cholestatic liver disease with unknown causes. The initiation of PBC is associated with bacterial infections and abnormal immune correlates, such as the presence of self-reactive anti-mitochondrial antibodies and shifted balance of T cell subsets. In particular, the CD4(+)CXCR5(+) follicular helper T (Tfh) cells are highly activated in PBC patients and are significantly associated with PBC severity, but the underlying reasons are unknown. In this study, we found that the circulating CD4(+)CXCR5(+) T cells were enriched with the interferon (IFN)-γ-secreting Th1-subtype and the interleukin (IL)-17-secreting Th17-subtype, but not the IL-4-secreting Th2 subtype...
August 11, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28804911/chronic-ethanol-metabolism-inhibits-hepatic-mitochondrial-superoxide-dismutase-via-lysine-acetylation
#10
Mohammed A Assiri, Samantha R Roy, Peter S Harris, Hadi Ali, Yongliang Liang, Colin T Shearn, David J Orlicky, James R Roede, Matthew D Hirschey, Donald S Backos, Kristofer S Fritz
BACKGROUND: Chronic ethanol consumption is a major cause of liver disease worldwide. Oxidative stress is a known consequence of ethanol metabolism and is thought to contribute significantly to alcoholic liver disease (ALD). Therefore, elucidating pathways leading to sustained oxidative stress and downstream redox imbalances may reveal how ethanol consumption leads to ALD. Recent studies suggest that ethanol metabolism impacts mitochondrial antioxidant processes through a number of proteomic alterations, including hyperacetylation of key antioxidant proteins...
August 14, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28801239/salsalate-activates-skeletal-muscle-thermogenesis-and-protects-mice-from-high-fat-diet-induced-metabolic-dysfunction
#11
Li Nie, Xin-Lu Yuan, Ke-Tao Jiang, Yu-Hui Jiang, Jin Yuan, Lan Luo, Shi-Wei Cui, Cheng Sun
Salsalate plays beneficial roles for ameliorating hyperglycemia and dyslipidemia in type 2 diabetes patients, but the underlying mechanisms are still poorly understood. In this study, by administering salsalate to mice fed with high fat diet and examining how salsalate rectifies metabolic dysfunction in these obese mice, we found that salsalate stimulated body temperature and attenuated body weight gain without affecting food intake. Our results showed that salsalate application decreased lipid accumulation in liver and epididymal white adipose tissue (eWAT), inhibited hepatic gluconeogenesis and improved insulin signaling transduction in eWAT...
August 4, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28799893/first-detection-of-echinococcus-multilocularis-in-rodent-intermediate-hosts-in-turkey
#12
Hamza Avcioglu, Esin Guven, Ibrahim Balkaya, Ridvan Kirman, Mohammed Mebarek Bia, Hatice Gulbeyen, Ali Kurt, Sali Yaya, Sadik Demirtas
Echinococcus multilocularis is the causative agent of alveolar echinococcosis (AE), a potentially fatal zoonotic disease. Large parts of Turkey are considered as endemic for E. multilocularis. The aim of this study was to determine the occurrence of metacestode of E. multilocularis in wild rodents in Erzurum, an endemic region for human AE in Turkey. During the sampling period, a total of 498 rodents were trapped in twenty counties of Erzurum Province. Suspected lesions were observed on the livers of 48 rodents, and then partial fragment of mitochondrial 12S rRNA gene was PCR-amplified...
August 11, 2017: Parasitology
https://www.readbyqxmd.com/read/28799513/ketogenic-diets-in-the-treatment-of-epilepsy
#13
Maurizio Elia, Joerg Klepper, Baerbel Leiendecker, Hans Hartmann
BACKGROUND: Although a larger number of antiepileptic drugs became available in the last decades, epilepsy remains drug-resistant in approximately a third of patients. Ketogenic diet (KD), first proposed at the beginning of the last century, is complex and has anticonvulsant effects, yet not completely understood. Over the last decades, different types of ketogenic diets (KDs) have been developed, namely classical KD and modified Atkins diet (MAD). They offer an effective alternative for children and adults with drug-resistant epilepsies...
August 9, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28798327/assessing-cell-nanoparticle-interactions-by-high-content-imaging-of-biocompatible-iron-oxide-nanoparticles-as-potential-contrast-agents-for-magnetic-resonance-imaging
#14
Roxanne Hachani, Martin A Birchall, Mark W Lowdell, Georgios Kasparis, Le D Tung, Bella B Manshian, Stefaan J Soenen, Willy Gsell, Uwe Himmelreich, Codi A Gharagouzloo, Srinivas Sridhar, Nguyen T K Thanh
Stem cell tracking in cellular therapy and regenerative medicine is an urgent need, superparamagnetic iron oxide nanoparticles (IONPs) could be used as contrast agents in magnetic resonance imaging (MRI) that allows visualization of the implanted cells ensuring they reach the desired sites in vivo. Herein, we report the study of the interaction of 3,4-dihydroxyhydrocinnamic acid (DHCA) functionalized IONPs that have desirable properties for T2 - weighted MRI, with bone marrow-derived primary human mesenchymal stem cells (hMSCs)...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28797310/maternal-intake-of-trans-unsaturated-or-interesterified-fatty-acids-during-pregnancy-and-lactation-modifies-mitochondrial-bioenergetics-in-the-liver-of-adult-offspring-in-mice
#15
Patricia C de Velasco, Gustavo Chicaybam, Dionizio M Ramos-Filho, Raísa M A R Dos Santos, Caroline Mairink, Fátima L C Sardinha, Tatiana El-Bacha, Antonio Galina, Maria das Graças Tavares-do-Carmo
The quality of dietary lipids in the maternal diet can programme the offspring to diseases in later life. We investigated whether the maternal intake of palm oil or interesterified fat, substitutes for trans-unsaturated fatty acids (FA), induces metabolic changes in the adult offspring. During pregnancy and lactation, C57BL/6 female mice received normolipidic diets containing partially hydrogenated vegetable fat rich in trans-unsaturated fatty acids (TG), palm oil (PG), interesterified fat (IG) or soyabean oil (CG)...
July 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28796242/the-triterpenoid-cddo-imidazolide-ameliorates-mouse-liver-ischemia-reperfusion-injury-through-activating-the-nrf2-ho-1-pathway-enhanced-autophagy
#16
Dongwei Xu, Lili Chen, Xiaosong Chen, Yankai Wen, Chang Yu, Jufang Yao, Hailong Wu, Xin Wang, Qiang Xia, Xiaoni Kong
Nuclear factor erythroid 2-related factor 2 (Nrf2)-mediated induction of antioxidants has been implicated to have protective roles in ischemia-reperfusion (I/R) injury in many animal models. However, the in vivo effects of CDDO-imidazole (CDDO-Im) (1-[2-cyano-3-,12-dioxooleana-1,9(11)-dien-28-oyl] imidazole), a Nrf2 activator, in hepatic I/R injury is lacking and its exact molecular mechanisms are still not very clear. The goals of this study were to determine whether CDDO-Im can prevent liver injury induced by I/R in the mouse, and to elucidate the molecular target of drug action...
August 10, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28795692/the-novel-resveratrol-derivative-3-5-diethoxy-3-4-dihydroxy-trans-stilbene-induces-mitochondrial-ros-mediated-er-stress-and-cell-death-in-human-hepatoma-cells-in-vitro
#17
Jae-Woo Park, Woo-Gyun Choi, Phil-Jun Lee, Su-Wol Chung, Byung-Sam Kim, Hun-Taeg Chung, Sungchan Cho, Jong-Heon Kim, Byoung-Heon Kang, Hyoungsu Kim, Hong-Pyo Kim, Sung-Hoon Back
Resveratrol (3,5,4'-trihydroxy-trans-stilbene) is a well-known polyphenol that is present in grapes, peanuts, pine seeds, and several other plants. Resveratrol exerts deleterious effects on various types of human cancer cells. Here, we analyzed the cell death-inducing mechanisms of resveratrol-006 (Res-006), a novel resveratrol derivative in human liver cancer cells in vitro. Res-006 was more effectively suppressed the viability of HepG2 human hepatoma cells than resveratrol (the IC50 values were 67.2 and 354...
August 10, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/28795196/melatonin-and-mitochondrial-function-during-ischemia-reperfusion-injury
#18
REVIEW
Zhiqiang Ma, Zhenlong Xin, Wencheng Di, Xiaolong Yan, Xiaofei Li, Russel J Reiter, Yang Yang
Ischemia/reperfusion (IR) injury occurs in many organs and tissues, and contributes to morbidity and mortality worldwide. Melatonin, an endogenously produced indolamine, provides a strong defense against IR injury. Mitochondrion, an organelle for ATP production and a decider for cell fate, has been validated to be a crucial target for melatonin to exert its protection against IR injury. In this review, we first clarify the mechanisms underlying mitochondrial dysfunction during IR and melatonin's protection of mitochondria under this condition...
August 9, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28792616/proteomic-profiling-of-liver-and-plasma-in-chronic-ethanol-feeding-model-of-hepatic-alcohol-dehydrogenase-deficient-deer-mice
#19
Kamlesh K Bhopale, Samir M Amer, Lata Kaphalia, Kizhake V Soman, John E Wiktorowicz, G A Shakeel Ansari, Bhupendra S Kaphalia
BACKGROUND: Chronic alcohol abuse, a major risk factor for such diseases as hepatitis and cirrhosis, impairs hepatic alcohol dehydrogenase (ADH, key ethanol metabolizing enzyme). Therefore, differentially altered hepatic and plasma proteomes were identified in chronic ethanol feeding model of hepatic ADH-deficient (ADH(-) ) deer mice to understand the metabolic basis of alcoholic liver disease (ALD). METHODS: ADH(-) deer mice were fed 3.5g% ethanol via Lieber-DeCarli liquid diet daily for three months, and histology of the liver assessed...
August 9, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28790515/transient-receptor-potential-melastatin-channel-family-member-2-friend-or-foe
#20
Joseph Y Cheung, Barbara A Miller
Transient receptor potential melastatin 2 (Trpm2) channels are nonvoltage-activated channels permeable to monovalent and divalent cations, and are expressed in heart, brain, kidney, vasculature, and hematopoietic cells. Trpm2 is overexpressed in bladder, lung, breast, liver, head, and neck cancers. Classically, Trpm2 activation induces cell injury and death by Ca(2+) overload or enhanced inflammatory response. Recent studies show that Trpm2 protects lungs from endotoxin-induced injury by reducing reactive oxygen species production in phagocytes; and improves cardiac function after ischemia-reperfusion injury by preserving mitochondrial respiration and cellular adenosine triphosphate levels while decreasing reactive oxygen species levels...
2017: Transactions of the American Clinical and Climatological Association
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