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Cu Zn superoxide dismutase

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https://www.readbyqxmd.com/read/29322011/safety-evaluation-of-bon-sant%C3%A3-cleanser%C3%A2-polyherbal-in-male-wistar-rats-further-investigations-on-androgenic-and-toxicological-profile
#1
O Awodele, O E Kale, A O Odewabi, M Ekor, B A Salau, A O Adefule-Ositelu
Background: The global increase in acceptance and use of herbal remedies in recent times is still accompanied with poor knowledge of their potential adverse effects and the toxicological implications of their use are underestimated. Methods: Bon-santé Cleanser® (BSC), a polyherbal containing Anogeissus leiocarpus, Terminalia ivorensis, Massularia acuminate and Macuna pruriens, is an "energizer and hormone booster". We assessed the effect of BSC on reproductive function after administration for 60 days in male Wistar rats...
January 2018: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/29299811/impaired-cu-zn-superoxide-dismutase-sod1-and-calcineurin-cn-interaction-in-als-a-presumed-consequence-for-tdp-43-and-zinc-aggregation-in-tg-sod1g93a-rodent-spinal-cord-tissue
#2
Jolene M Kim, Elizabeth Billington, Ada Reyes, Tara Notarianni, Jessica Sage, Emre Agbas, Michael Taylor, Ian Monast, John A Stanford, Abdulbaki Agbas
Impaired interactions between Calcineurin (Cn) and (Cu/Zn) superoxide dismutase (SOD1) are suspected to be responsible for the formation of hyperphosphorylated protein aggregation in amyotrophic lateral sclerosis (ALS). Serine (Ser)- enriched phosphorylated TDP-43 protein aggregation appears in the spinal cord of ALS animal models, and may be linked to the reduced phosphatase activity of Cn. The mutant overexpressed SOD1G93A protein does not properly bind zinc (Zn) in animal models; hence, mutant SOD1G93A-Cn interaction weakens...
January 3, 2018: Neurochemical Research
https://www.readbyqxmd.com/read/29283372/neuroprotective-effects-and-mechanisms-of-curcumin-cu-ii-and-zn-ii-complexes-systems-and-their-pharmacological-implications
#3
Fa-Shun Yan, Jian-Long Sun, Wen-Hai Xie, Liang Shen, Hong-Fang Ji
Alzheimer's disease (AD) is the main form of dementia and has a steadily increasing prevalence. As both oxidative stress and metal homeostasis are involved in the pathogenesis of AD, it would be interesting to develop a dual function agent, targeting the two factors. Curcumin, a natural compound isolated from the rhizome of Curcuma longa, is an antioxidant and can also chelate metal ions. Whether the complexes of curcumin with metal ions possess neuroprotective effects has not been evaluated. Therefore, the present study was designed to investigate the protective effects of the complexes of curcumin with Cu(II) or Zn(II) on hydrogen peroxide (H₂O₂)-induced injury and the underlying molecular mechanisms...
December 28, 2017: Nutrients
https://www.readbyqxmd.com/read/29282717/intracerebroventricular-administration-of-cystatin-c-ameliorates-disease-in-sod1-linked-amyotrophic-lateral-sclerosis-mice
#4
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/29259135/eukaryotic-cu-only-superoxide-dismutases-sods-a-new-class-of-sod-enzymes-and-sod-like-protein-domains
#5
Natalie G Robinett, Ryan L Peterson, Valeria C Culotta
The Cu-containing superoxide dismutases (SODs) represent a large family of enzymes that participate in the metabolism of reactive oxygen species by disproportionating superoxide anion radical to oxygen and hydrogen peroxide.  Catalysis is driven by the redox-active Cu ion, and in most cases, SODs also harbor a Zn at the active site that enhances Cu catalysis and stabilizes the protein. Such bimetallic Cu/Zn SODs are widespread, from the periplasm of bacteria to virtually every organelle in the human cell. However, a new class of Cu-containing SODs has recently emerged that function without Zn...
December 19, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29243316/effect-of-lactic-acid-bacteria-treated-king-grass-silage-on-the-performance-traits-and-serum-metabolites-in-new-zealand-white-rabbits-oryctolagus-cuniculus
#6
A A Shah, X Yuan, R U Khan, T Shao
This study examined the effects of Lactobacillus plantarum and Pediococcus acidilactici-treated silage of King grass (Pennisetum purpureophoides) on the productive traits and blood biochemistry of New Zealand white (NZW) rabbits. King grass was ensiled without or with L. plantarum (T1), P. acidilactici (T2) and P. acidilactici + L. plantarum (T3). A total of 72 male NZW rabbits (6 weeks) of similar weight and appearance were housed in groups in metallic cages in a completely randomized design. The performance traits, daily feed intake, body weight gain and feed convention ratio were not affected by the silage treatment...
December 15, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/29232192/vitamin-e-improved-redox-homeostasis-in-heart-and-aorta-of-hypothyroid-rats
#7
M Hedayati, S Niazmand, M Hosseini, Y Baghcheghi, F Beheshti, S Niazmand
OBJECTIVES: The objective of this study was to evaluate the effect of vitamin E on the oxidative stress parameters and antioxidant defense enzymes in the heart and aorta of 6-n-propylthiouracil (PTU)-induced hypothyroid rats. METHODS: The animals were divided into 4 experimental groups: Group 1 (Euthyroid) received tap water, Group 2 (Hypothyroid) received 0.05 % of PTU in dissolved in their drinking water, Group 3 (PTU+Vit E) hypothyroid rats treated with vitamin E, and Group 4 (Euthyroid+Vit E)...
October 26, 2017: Endocrine Regulations
https://www.readbyqxmd.com/read/29220697/metabolism-of-hydrogen-sulfide-h2s-and-production-of-reactive-sulfur-species-rss-by-superoxide-dismutase
#8
Kenneth R Olson, Yan Gao, Faihaan Arif, Kanika Arora, Shivali Patel, Eric R DeLeon, Thomas R Sutton, Martin Feelisch, Miriam M Cortese-Krott, Karl D Straub
Reactive sulfur species (RSS) such as H2S, HS•, H2Sn, (n = 2-7) and HS2•- are chemically similar to H2O and the reactive oxygen species (ROS) HO•, H2O2, O2•- and act on common biological effectors. RSS were present in evolution long before ROS, and because both are metabolized by catalase it has been suggested that "antioxidant" enzymes originally evolved to regulate RSS and may continue to do so today. Here we examined RSS metabolism by Cu/Zn superoxide dismutase (SOD) using amperometric electrodes for dissolved H2S, a polysulfide-specific fluorescent probe (SSP4), and mass spectrometry to identify specific polysulfides (H2S2-H2S5)...
November 20, 2017: Redox Biology
https://www.readbyqxmd.com/read/29203449/dietary-leucine-modulates-growth-performance-nrf2-antioxidant-signaling-pathway-and-immune-response-of-juvenile-blunt-snout-bream-megalobrama-amblycephala
#9
Hualiang Liang, Ahmed Mokrani, Ke Ji, Xianping Ge, Mingchun Ren, Jun Xie, Bo Liu, Bingwen Xi, Qunlan Zhou
The present study assessed the effects of dietary leucine on growth performance, antioxidant status and immunity in juvenile blunt snout bream. Fish were fed six practical diets of graded leucine levels ranging from 0.90% to 2.94% of dry basis for 8 weeks. Trail results showed that compared to control group (0.90%), 1.72% dietary leucine level significantly improved final weight (FW), weight gain rate (WG) and specific growth rate (SGR), and significantly lowered feed conversion ratio (FCR). Based on WG and SGR, the optimal dietary leucine level was obtained at 1...
December 1, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29202329/relationship-of-ros-accumulation-and-superoxide-dismutase-isozymes-in-developing-anther-with-floret-fertility-of-rice-under-heat-stress
#10
Qian Zhao, Lujian Zhou, Jianchao Liu, Xiaoxia Du, Muhammad-Asad-Ullah Asad, Fudeng Huang, Gang Pan, Fangmin Cheng
High temperature (HT) at meiosis stage is one of most important environment constraint affecting spikelet fertility and rice yield. In this paper, the effects of HT exposure at meiosis stage on the ROS (reactive oxygen species) accumulation, various superoxide dismutase (SOD, EC1.15.1.11) isozymes in developing anther, and its relationship with HT-induced decline in pollen viability and floret fertility were investigated by using four rice cultivars differing in heat tolerance under well-controlled climatic condition...
November 16, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29201228/insect-tea-attenuates-hydrochloric-acid-and-ethanol-induced-mice-acute-gastric-injury
#11
Xin Zhao, Qiang Cheng, Yu Qian, Ruokun Yi, Lianjie Gu, Shanshan Wang, Jia-Le Song
The aim of the present study was to investigate the protective effect of insect tea on HCl/ethanol-induced gastric ulcers in ICR mice. The serum levels of vasoactive intestinal peptide, substance P, somatostatin, motilin and endothelin-1 in mice were assessed using commercial kits and gastric tissues of superoxide dismutase (SOD, nitric oxide (NO) and malondialdehyde (MDA) were determined using western blot analysis Insect tea significantly reduced HCl/ethanol-induced gastric juice secretion and increased the pH of gastric juice (P<0...
November 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29174990/peroxidation-and-unsaturation-indices-as-potential-biomarkers-of-multifarious-zinc-and-copper-micro-supplementation-in-helix-pomatia-l
#12
Danuta Kowalczyk-Pecka, Edyta Kowalczuk-Vasilev, Andrzej Puchalski, Renata Klebaniuk
The work is a continuation of two previous studies in which biomarker fatty acids (12 of 56 FA pools) were analysed in Helix pomatia L. after heterogeneous micro-supplementation of Zn and Cu (administered in five micro-doses in the form of salts and EDTA and lysine chelates). This time, peroxidation (PI) and unsaturation coefficients (UI) as biomarker were analysed. These indices were calculated based on the FA profile in the foot and hepatopancreas of snails. The correlation of frequently used oxidation status indicators of organisms (catalase - CAT, glutathione peroxidase - GPx, selenium-dependent peroxidase - se-GPx, superoxide dismutase - SOD, glutathione transferase - GST, glutathione reductase - GR, glutathione - GSH, carbonyl protein - CP, thiobarbituric acid reactive substances - TBARS) with the rarely used UI and PI ratios was analysed...
November 22, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29170621/the-analysis-of-cu-ii-zn-ii-cyclopeptide-system-as-potential-cu-znsod-mimic-center
#13
Aleksandra Kotynia, Tomasz Janek, Żaneta Czyżnikowska, Sylwia Bielińska, Wojciech Kamysz, Justyna Brasuń
In this paper are presented the features of copper (II) and zinc (II) heteronuclear complexes of the cyclic peptide-c(HKHGPG)2. The coordination properties of ligand were studied by potentiometric, UV-Vis and CD spectroscopic methods. These experiments were carried out in aqueous solutions at 298 K depending on pH. It turned out that in a physiological pH dominates Cu(II)/Zn(II) complex ([CuZnL](4+)) which could mimic the active center of superoxide dismutase (Cu,ZnSOD). In next step we performed in vitro research on Cu,ZnSOD activity for [CuZnL](4+) complex existing in 7...
2017: International Journal of Peptide Research and Therapeutics
https://www.readbyqxmd.com/read/29157189/molecular-dynamics-of-a-far-positioned-sod1-mutant-v14m-reveals-pathogenic-misfolding-behavior
#14
Dharma Rao Tompa, K Saraboji
Human superoxide dismutase (Cu/Zn SOD1) is a homodimeric enzyme. Mutations in Cu/Zn SOD1 causes a familial form of amyotrophic lateral sclerosis (fALS), and aggregation of mutant SOD1 has been proposed to play a role in neurodegeneration. Though a majority of the mutations are point substitutions, there are a few changes that result in amino acid deletions or truncations of the polypeptide. These pathogenic mutations are scattered throughout the three-dimensional structure of the dimeric enzyme, which creates a puzzling pattern to investigate the molecular determinants of fALS...
November 20, 2017: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/29154829/a-role-for-candida-albicans-superoxide-dismutase-enzymes-in-glucose-signaling
#15
Chynna N Broxton, Bixi He, Vincent M Bruno, Valeria C Culotta
The Saccharomyces cerevisiae and Candida albicans yeasts have evolved to differentially use glucose for fermentation versus respiration. S. cerevisiae is Crabtree positive, where glucose represses respiration and promotes fermentation, while the opportunistic fungal pathogen C. albicans is Crabtree negative and does not repress respiration with glucose. We have previously shown that glucose control in S. cerevisiae involves the antioxidant enzyme Cu/Zn superoxide dismutase (SOD1), where H2O2 generated by SOD1 stabilizes the casein kinase YCK1 for glucose sensing...
November 14, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29144200/mechanisms-underlying-melatonin-mediated-prevention-of-fenvalerate-induced-behavioral-and-oxidative-toxicity-in-zebrafish
#16
Jingjing Han, Cheng Ji, Yichen Guo, Rui Yan, Ting Hong, Yuanyan Dou, Yan An, Shasha Tao, Fenju Qin, Jihua Nie, Chen Ji, Han Wang, Jian Tong, Wei Xiao, Jie Zhang
The neurotoxic effects attributed to the pesticide fenvalerate (FEN) are well-established. The aim of this study was to determine whether melatonin (MLT) was able to protect against FEN-induced behavior, oxidative stress, apoptosis, and neurogenesis using zebrafish (Danio rerio) model. Zebrafish exposed to 100 μg/L FEN for 120 h exhibited decreased swimming activity accompanied by downregulated expression of neurogenesis-related genes (Dlx2, Shha, Ngn1, Elavl3, and Gfap), suggesting that neurogenesis were impaired...
November 16, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/29143931/antioxidant-enzyme-activities-of-folsomia-candida-and-avoidance-of-soil-metal-contamination
#17
Wencai Dai, Xin Ke, Zhu Li, Ming Gao, Longhua Wu, Peter Chiristie, Yongming Luo
Induction of the antioxidant enzymes catalase (CAT), peroxidase (POD) and superoxide dismutase (SOD) and the avoidance of potentially toxic metals in soil by Folsomia candida were investigated. Both laboratory-spiked and field-polluted agricultural soils were used. Cadmium (Cd) concentrations in body tissues, animal avoidance behaviour and physico-chemical properties of the field soils were also determined. In laboratory Cd-spiked soils, the CAT and SOD activities in the Cd treatments were 71.1-94.7 and 1.31-4...
November 16, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29142618/melatonin-supplementation-lowers-oxidative-stress-and-regulates-adipokines-in-obese-patients-on-a-calorie-restricted-diet
#18
Karolina Szewczyk-Golec, Paweł Rajewski, Marcin Gackowski, Celestyna Mila-Kierzenkowska, Roland Wesołowski, Paweł Sutkowy, Marta Pawłowska, Alina Woźniak
Obesity is one of the major global health problems. Melatonin deficiency has been demonstrated to correlate with obesity. The aim of the study was to estimate the effect of melatonin on oxidative stress and adipokine levels in obese patients on a calorie-restricted diet. Thirty obese patients were supplemented with a daily dose of 10 mg of melatonin (n = 15) or placebo (n = 15) for 30 days with a calorie-restricted diet. Serum levels of melatonin, 4-hydroxynonenal (HNE), adiponectin, omentin-1, leptin, and resistin, as well as erythrocytic malondialdehyde (MDA) concentration and Zn/Cu-superoxide dismutase, catalase, and glutathione peroxidase (GPx) activities, were measured at baseline and after supplementation...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29135932/extracts-of-crataegus-oxyacantha-and-rosmarinus-officinalis-attenuate-ischemic-myocardial-damage-by-decreasing-oxidative-stress-and-regulating-the-production-of-cardiac-vasoactive-agents
#19
Raúl Enrique Cuevas-Durán, Juan Carlos Medrano-Rodríguez, María Sánchez-Aguilar, Elizabeth Soria-Castro, María Esther Rubio-Ruíz, Leonardo Del Valle-Mondragón, Alicia Sánchez-Mendoza, Juan Carlos Torres-Narvaéz, Gustavo Pastelín-Hernández, Luz Ibarra-Lara
Numerous studies have supported a role for oxidative stress in the development of ischemic damage and endothelial dysfunction. Crataegus oxyacantha (Co) and Rosmarinus officinalis (Ro) extracts are polyphenolic-rich compounds that have proven to be efficient in the treatment of cardiovascular diseases. We studied the effect of extracts from Co and Ro on the myocardial damage associated with the oxidative status and to the production of different vasoactive agents. Rats were assigned to the following groups: (a) sham; (b) vehicle-treated myocardial infarction (MI) (MI-V); (c) Ro extract-treated myocardial infarction (MI-Ro); (d) Co extract-treated myocardial infarction (MI-Co); or (e) Ro+Co-treated myocardial infarction (MI-Ro+Co)...
November 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29133823/identification-of-mirna-mediated-drought-responsive-multi-tiered-regulatory-network-in-drought-tolerant-rice-nagina-22
#20
Sonia Balyan, Mukesh Kumar, Roseeta Devi Mutum, Utkarsh Raghuvanshi, Priyanka Agarwal, Saloni Mathur, Saurabh Raghuvanshi
Comparative characterization of microRNA-mediated stress regulatory networks in contrasting rice cultivars is critical to decipher plant stress response. Consequently, a multi-level comparative analysis, using sRNA sequencing, degradome analysis, enzymatic and metabolite assays and metal ion analysis, in drought tolerant and sensitive rice cultivars was conducted. The study identified a group of miRNAs "Cultivar-specific drought responsive" (CSDR)-miRNAs (osa-miR159f, osa-miR1871, osa-miR398b, osa-miR408-3p, osa-miR2878-5p, osa-miR528-5p and osa-miR397a) that were up-regulated in the flag-leaves of tolerant cultivar, Nagina 22 (N22) and Vandana, but down-regulated in the sensitive cultivar, Pusa Basmati 1 (PB1) and IR64, during drought...
November 13, 2017: Scientific Reports
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