Read by QxMD icon Read

Mitochondria glutathione

Raúl Cassia, Macarena Nocioni, Natalia Correa-Aragunde, Lorenzo Lamattina
Here, we review information on how plants face redox imbalance caused by climate change, and focus on the role of nitric oxide (NO) in this response. Life on Earth is possible thanks to greenhouse effect. Without it, temperature on Earth's surface would be around -19°C, instead of the current average of 14°C. Greenhouse effect is produced by greenhouse gasses (GHG) like water vapor, carbon dioxide (CO2 ), methane (CH4 ), nitrous oxides (Nx O) and ozone (O3 ). GHG have natural and anthropogenic origin. However, increasing GHG provokes extreme climate changes such as floods, droughts and heat, which induce reactive oxygen species (ROS) and oxidative stress in plants...
2018: Frontiers in Plant Science
Dhiraj P Murale, Seong Cheol Hong, Md Mamunul Haque, Jun-Seok Lee
Glutathione (GSH) is one of major anti-oxidant inside cells that regulates oxido-reduction homeostasis. Recently, there have been extensive efforts to visualize GSH in live cells, but most of the probes available today are simple detection sensor without detail cellular localization. Here, we have developed a new fluorescent probe (pcBD2-Cl), which are cell permeable and selectively react with GSH in-situ. The in-situ GSH labeled probe (pcBD2-GSH) exhibited quenched fluorescence, but subsequent binding to cellular abundant Glutathione S-transferase (GST) recovers the fluorescence intensity that makes possible to imaging GSH-GST complex in live cells...
March 14, 2018: Chembiochem: a European Journal of Chemical Biology
Akram Ranjbar, Nejat Kheiripour, Hassan Ghasemi, Mohamad Ali Seif Rabiei, Farahnaz Dadras, Farhad Khoshjou
INTRODUCTION: Oxidative stress has a well-known role in diabetic nephropathy, and mitochondria are the major source of reactive oxygen species production. This study aimed to assess the effect of tempol, a superoxide dismutase mimetic agent, on mitochondrial antioxidant enzymes and cell viability in diabetic nephropathy. MATERIALS AND METHODS: Adult male Wistar rats were divided into 4 groups of 7 animals. Diabetes mellitus was induced by injection of streptozotocin in 2 groups, the rat in one of which were also treated with tempol for 4 weeks...
March 2018: Iranian Journal of Kidney Diseases
Ana Stancic, Aleksandra Jankovic, Aleksandra Korac, Dusko Cirovic, Vesna Otasevic, Kenneth B Storey, Bato Korac
In the present study we hypothesized that myocardial adaptive phenotype in mammalian hibernation involves rearrangement of mitochondria bioenergetic pathways providing protective pattern in states of reduced metabolism and low temperature. European ground squirrels (Spermophilus citellus) were exposed to low temperature (4 ± 1 °C) and then divided into two groups: (1) animals that fell into torpor (hibernating group) and (2) animals that stayed active and euthermic for 1, 3, 7, 12, or 21 days (cold-exposed group)...
March 5, 2018: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
D J S Ferreira, A A Pedroza, G R F Braz, M P Fernandes, C J Lagranha
Mitochondria are important organelles in eukaryotic organisms, wherein their capacity to produce energy vary among the tissues depending upon the amounts of oxygen consumed. Part of the oxygen consumed during ATP generation produces reactive oxygen species, which if not efficiently removed can trigger a systemic damage to molecular compounds characterized as oxidative stress. Several studies have demonstrated that mitochondrial dysfunction and oxidative stress in the central nervous system (CNS) are related to a plethora of neural disorders...
March 1, 2018: Nutritional Neuroscience
Katarzyna Głombik, Aneta Stachowicz, Ewa Trojan, Joanna Ślusarczyk, Maciej Suski, Katarzyna Chamera, Katarzyna Kotarska, Rafał Olszanecki, Agnieszka Basta-Kaim
BACKGROUND: Alteration in the brain mitochondrial functions have been suggested to participate, as a relevant factor, in the development of mental disorders. Therefore, the brain mitochondria may be a crucial therapeutic target in the course of depression. METHODS: Our goal was to find out the impact of two antidepressant drugs with various mechanisms of action - imipramine and fluoxetine, on the frontal cortex mitochondria-enriched fraction in an animal model of depression based on the prenatal stress procedure...
November 26, 2017: Pharmacological Reports: PR
Konstantin B Shumaev, Arina L Dudylina, Marina V Ivanova, Igor S Pugachenko, Enno K Ruuge
Mitochondria are widely known as a major source of reactive oxygen and nitrogen species for the cardiovascular system. Numerous studies established that superoxide anion radical production by heart mitochondria is only slightly suppressed under conditions of deep hypoxia, but is completely blocked under anoxia. It was found also that dinitrosyl iron complexes (DNIC) compare favourably with other physiologically active derivatives of nitric oxide (NO). DNIC with glutathione effectively scavenge superoxide radicals generated by mitochondria at different partial pressures of oxygen...
February 22, 2018: BioFactors
Elham Ahmadian, Ahmad Yari Khosroushahi, Mohammad Ali Eghbal, Aziz Eftekhari
Organophosphates (OP) are potent pesticide commonly utilized in agricultural and domestic use. However, plentitude of data represent their side effects in different body tissues. We attempted to study whether betanin (a natural pigment) is able to mitigate some OPs-induced hepatotoxicity in primary rat hepatocytes. Cell viability, lactate dehydrogenase (LDH) leakage, reactive oxygen species (ROS) formation, lipid peroxidation (LPO), glutathione (GSH) depletion and mitochondrial depolarization were tested as toxicity markers...
January 2018: Pesticide Biochemistry and Physiology
Mayra A Borrero Landazabal, Aurora L Carreño Otero, Vladimir V Kouznetsov, Jonny E Duque Luna, Stelia C Mendez-Sanchez
Aedes aegypti mosquitoes are responsible for dengue, chikungunya, and Zika virus transmission in tropical and subtropical areas around the world. Due to the absence of vaccines or antiviral drugs for human treatment, the majority of control strategies are targeted at Ae. aegypti elimination. Our research on mosquito control insecticidal agents has previously shown that the alkaloid girgensohnine and its analogues (α-aminonitriles) present in vitro acetylcholinesterase inhibition and in vivo insecticidal activity against Ae...
January 2018: Pesticide Biochemistry and Physiology
Mélanie Marie, Karine Bigot, Claire Angebault, Coralie Barrau, Pauline Gondouin, Delphine Pagan, Stéphane Fouquet, Thierry Villette, José-Alain Sahel, Guy Lenaers, Serge Picaud
AIMS: Blue light is an identified risk factor for age-related macular degeneration (AMD). We investigated oxidative stress markers and mitochondrial changes in A2E-loaded retinal pigment epithelium cells under the blue-green part of the solar spectrum that reaches the retina to better understand the mechanisms underlying light-elicited toxicity. RESULTS: Primary retinal pigment epithelium cells were loaded with a retinal photosensitizer, AE2, to mimic aging. Using a custom-made illumination device that delivers 10 nm-wide light bands, we demonstrated that A2E-loaded RPE cells generated high levels of both hydrogen peroxide (H2 O2 ) and superoxide anion (O2 •- ) when exposed to blue-violet light...
February 19, 2018: Cell Death & Disease
Juan Tang, Xiuying Jia, Nana Gao, Yingzhu Wu, Zhengquan Liu, Xiangjun Lu, Qiongxia Du, Jianbo He, Ning Li, Bin Chen, Jinxiao Jiang, Wenli Liu, Ying Ding, Weiqin Zhu, Hangjun Zhang
Perfluorooctanoic acid (PFOA) is widely distributed in various environmental media and is toxic to organisms. This study demonstrated that PFOA induces hepatotoxicity in the frog and evaluated the role of CYP3A and the Nrf2-ARE signaling pathway in regulating responses to PFOA-induced hepatotoxicity. Rana nigromaculata were exposed to 0, 0.01, 0.1, 0.5, or 1 mg/L PFOA solutions in a static-renewal system for 14 days. Liver tissue samples were collected 24 h after the last treatment. Hepatic histology was observed by HE staining and transmission electron microscopy...
February 16, 2018: Environmental Pollution
Kaniz Fatima Binte Hossain, Md Mostafizur Rahman, Md Tajuddin Sikder, Takeshi Saito, Toshiyuki Hosokawa, Masaaki Kurasaki
Purpose of this study is to investigate mechanism/s of cyto-protection by selenium (Na2 SeO3 ; Se4+ ) against cadmium (CdCl2 ; Cd2+ )-induced cytotoxicity using PC12 cells. In addition, Se (5, 10, 20 and 40 μM) and Cd (2.5, 5 and 10 μM)-induced cytotoxicity is determined. Cytotoxicity assays and western blot analyses confirmed that Se (≥10 μM) promotes autophagic cell death via inhibition of mTOR activation and p62 accumulation due to increase of cellular oxidative stress. On the other hand, co-presence of non-toxic Se (5 μM) and toxic Cd (5 μM) showed to increase cell viability, glutathione and glutathione peroxidase 1 (GPx1) levels, and to decrease DNA fragmentation and lactate dehydrogenase (LDH) activity compared to Cd-treated (5 μM) cells alone...
February 15, 2018: Food and Chemical Toxicology
Seema Kumari, Anil Kumar Badana, Murali Mohan G, Shailender G, RamaRao Malla
Background: Cancer is one of the major heterogeneous disease with high morbidity and mortality with poor prognosis. Elevated levels of reactive oxygen species (ROS), alteration in redox balance, and deregulated redox signaling are common hallmarks of cancer progression and resistance to treatment. Mitochondria contribute mainly in the generation of ROS during oxidative phosphorylation. Elevated levels of ROS have been detected in cancers cells due to high metabolic activity, cellular signaling, peroxisomal activity, mitochondrial dysfunction, activation of oncogene, and increased enzymatic activity of oxidases, cyclooxygenases, lipoxygenases, and thymidine phosphorylases...
2018: Biomarker Insights
Li Li, Yu Hao, Yu Zhao, Huijuan Wang, Xiujun Zhao, Yan Jiang, Fulu Gao
Sertoli cell death contributes to spermatogenesis impairment, which is associated with male infertility. Testicular ischemia‑reperfusion (I/R) injury induces the cell death of germ cells and Sertoli cells, whereas inhibition of cell death ameliorates acute testicular I/R damage. The aim of the present study was to investigate the mechanism of I/R stress-induced cell death in TM4 cells. Oxygen‑glucose deprivation and reoxygenation (OGD/R) was demonstrated to induce I/R injury and cell death in TM4 cells...
February 7, 2018: International Journal of Molecular Medicine
Hao Ding, Xing-Wang Xu, Huan Wang, Lin Xiao, Le Zhao, Guang-Ling Duan, Xiao-Ran Li, Zhao-Xia Ma, He-Ping Chen
DJ-1 was recently reported to mediate the cardioprotection of delayed hypoxic preconditioning (DHP) by suppressing hypoxia/reoxygenation (H/R)-induced oxidative stress, but its mechanism against H/R-induced oxidative stress during DHP is not fully elucidated. Here, using the well-established cellular model of DHP, we again found that DHP significantly improved cell viability and reduced lactate dehydrogenase release with concurrently up-regulated DJ-1 protein expression in H9c2 cells subjected to H/R. Importantly, DHP efficiently improved mitochondrial complex I activity following H/R and attenuated H/R-induced mitochondrial reactive oxygen species (ROS) generation and subsequent oxidative stress, as demonstrated by a much smaller decrease in reduced glutathione/oxidized glutathione ratio and a much smaller increase in intracellular ROS and malondialdehyde contents than that observed for the H/R group...
February 12, 2018: Cell Biochemistry and Function
Ji Yoon Yeon, Su Jin Yoo, Hiroshi Takagi, Hyun Ah Kang
In most bacteria and plants, direct biosynthesis of cysteine from sulfide via O-acetylserine (OAS) is essential to produce sulfur amino acids from inorganic sulfur. Here, we report the functional analysis of a novel mitochondrial serine O-acetyltransferase (SAT), responsible for converting serine into OAS, in the thermotolerant methylotrophic yeast Ogataea parapolymorpha. Domain analysis of O. parapolymorpha SAT (OpSat1p) and other fungal SATs revealed that these proteins possess a mitochondrial targeting sequence (MTS) at the N-terminus and an α/β hydrolase 1 domain at the C-terminal region, which is quite different from the classical SATs of bacteria and plants...
February 5, 2018: Scientific Reports
Tingchao Mao, Chengquan Han, Biao Wei, Lu Zhao, Qing Zhang, Ruizhi Deng, Jun Liu, Yan Luo, Yong Zhang
Quercetin, a plant-derived flavonoid, is frequently used as an antioxidant for efficient anti-oxidative capacity. However, whether quercetin has protective effects on goat sperm and preimplantation embryos against Cd2+-induced oxidative injury is still unclear. So, we researched the influence of quercetin on goat sperm and zygotes respectively under the oxidative stress induced by Cd2+. In our study, quercetin decreased the malonaldehyde (MDA) and reactive oxygen species (ROS) levels caused by Cd2+ in goat sperm (p < 0...
February 4, 2018: Biological Trace Element Research
Wonjong Lee, Dong Gun Lee
Fluconazole (FLC) is a well-known fungistatic agent that inhibits ergosterol biosynthesis. We showed that FLC exhibits dose-dependent fungicidal activity, and investigated the fungicidal mechanism of FLC on Candida albicans. To confirm the relationship between fungicidal activity and the inhibition of ergosterol, we assessed membrane dysfunctions via propidium iodide influx and potassium leakage, as well as morphological change. Interestingly, while membrane disruption was not observed at all tested concentrations of FLC, potassium efflux and cell shrinkage were observed at high dosages of FLC (HDF)...
February 2018: Microbiology
Chuanjing Fu, Qi Wang, Xiaofu Zhai, Juemin Gao
Background: Sinomenine (SIN) has been shown to have protective effects against brain damage following traumatic brain injury (TBI). However, the mechanisms and its role in these effects remain unclear. This study was conducted to investigate the potential mechanisms of the protective effects of SIN. Methods: The weight-drop model of TBI in Institute of Cancer Research (ICR) mice were treated with SIN or a vehicle via intraperitoneal administration 30 min after TBI...
2018: Drug Design, Development and Therapy
Anja Jelinek, Lukas Heyder, Michael Daude, Matthias Plessner, Sylvia Krippner, Robert Grosse, Wibke E Diederich, Carsten Culmsee
Research into oxidative cell death is producing exciting new mechanisms, such as ferroptosis, in the neuropathologies of cerebral ischemia and hemorrhagic brain insults. Ferroptosis is an oxidative form of regulated necrotic cell death featuring glutathione (GSH) depletion, disrupted glutathione peroxidase-4 (GPX4) redox defense and detrimental lipid reactive oxygen species (ROS) formation. Further, our recent findings identified mitochondrial damage in models of oxidative glutamate toxicity, glutathione peroxidase depletion, and ferroptosis...
January 26, 2018: Free Radical Biology & Medicine
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"