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Antioxidant enzymes

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https://www.readbyqxmd.com/read/28813209/galangin-a-natural-flavonoid-reduces-mitochondrial-oxidative-damage-in-streptozotocin-induced-diabetic-rats
#1
Amal A Aloud, Chinnadurai Veeramani, Chandramohan Govindasamy, Mohammed A Alsaif, Khalid S Al-Numair
OBJECTIVE: We designed this study to observe the effect of galangin on damaged mitochondria in the liver of diabetic rats. METHODS: Male albino Wistar rats were made diabetic by injecting streptozotocin (STZ) intraperitoneally (40 mg kg(-1) body weight (BW)). Galangin (8 mg kg(-1) BW) or glibenclamide (600 µg kg(-1) BW) was given orally daily once for 45 days to both healthy and diabetic rats. RESULTS: Diabetic rats showed significant (P < 0...
August 16, 2017: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/28812766/modulatory-effects-of-arginine-glutamine-and-branched-chain-amino-acids-on-heat-shock-proteins-immunity-and-antioxidant-response-in-exercised-rats
#2
Carolina Soares Moura, Pablo Christiano Barboza Lollo, Priscila Neder Morato, Eder Muller Risso, Jaime Amaya-Farfan
Heat shock proteins (HSPs) are endogenous proteins whose function is to maintain the cell's tolerance to insult, and glutamine supplementation is known to increase HSP expression during intense exercise. Since few studies have addressed the possibility that supplementation with other amino acids could have similar effects to that of glutamine, our objective was to evaluate the effects of leucine, valine, isoleucine and arginine as potential stimulators of HSPs 25, 60, 70 and 90 in rats subjected to acute exercise as a stressing factor...
August 16, 2017: Food & Function
https://www.readbyqxmd.com/read/28811866/preliminary-data-on-the-interaction-between-some-biometals-and-oxidative-stress-status-in-mild-cognitive-impairment-and-alzheimer-s-disease-patients
#3
Ioana-Miruna Balmuș, Stefan-Adrian Strungaru, Alin Ciobica, Mircea-Nicusor Nicoara, Romeo Dobrin, Gabriel Plavan, Cristinel Ștefănescu
Increased interest regarding the biometal mechanisms of action and the pathways in which they have regulatory roles was lately observed. Particularly, it was shown that biometal homeostasis dysregulation may lead to neurodegeneration including Alzheimer's disease, Parkinson disease, or prion protein disease, since important molecular signaling mechanisms in brain functions implicate both oxidative stress and redox active biometals. Oxidative stress could be a result of a breakdown in metal-ion homeostasis which leads to abnormal metal protein chelation...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28811692/experimental-validation-of-antidiabetic-and-antioxidant-potential-of-cassia-tora-l-an-indigenous-medicinal-plant
#4
Vishnu Kumar, Ranjana Singh, Farzana Mahdi, Abbas Ali Mahdi, Raj Kumar Singh
The present study was undertaken to evaluate antidiabetic and antioxidant activities of Cassia tora (C. tora) seeds extract against streptozotocin induced diabetes in experimental rats to scientifically validate its use against diabetes. Ethanolic extract of C. tora seeds extract and standard drug (glibenclamide) prepared in aqueous gum acacia (2 %, w/v) suspension and fed orally to streptozotocin induced male adult diabetic rats of Charles Foster strain for 15 days. Biochemical parameters in normal, diabetic control, standard (600 μg/kg bw p...
July 2017: Indian Journal of Clinical Biochemistry: IJCB
https://www.readbyqxmd.com/read/28811686/influence-of-the-flavonoid-quercetin-on-antioxidant-status-lipid-peroxidation-and-histopathological-changes-in-hyperammonemic-rats
#5
Sivamani Kanimozhi, Pakkiri Bhavani, Perumal Subramanian
We have studied the ability of quercetin (a bioflavonoid) in tackling oxidative stress to alleviate the symptoms during ammonium chloride-induced hyperammonemia. Hyperammonemia was induced by the treatment of ammonium chloride (AC) 100 mg/kg b.w for 56 days. Hyperammonemic rats exhibited reduced urea (in plasma) and increased ammonia (in blood), uric acid (in plasma), creatinine (in serum), oxidative stress markers (thiobarbituric acid reactive substances (TBARS) and hydroperoxides (HP) and decreased levels of antioxidants (enzymatic and non-enzymatic) superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), reduced glutathione (GSH) in plasma and tissues (liver and brain) vitamins E and C (in plasma))...
July 2017: Indian Journal of Clinical Biochemistry: IJCB
https://www.readbyqxmd.com/read/28811547/up-regulation-of-nadph-oxidase-mediated-redox-signaling-contributes-to-the-loss-of-barrier-function-in-krit1-deficient-endothelium
#6
Luca Goitre, Peter V DiStefano, Andrea Moglia, Nicholas Nobiletti, Eva Baldini, Lorenza Trabalzini, Julie Keubel, Eliana Trapani, Vladimir V Shuvaev, Vladimir R Muzykantov, Ingrid H Sarelius, Saverio Francesco Retta, Angela J Glading
The intracellular scaffold KRIT1/CCM1 is an established regulator of vascular barrier function. Loss of KRIT1 leads to decreased microvessel barrier function and to the development of the vascular disorder Cerebral Cavernous Malformation (CCM). However, how loss of KRIT1 causes the subsequent deficit in barrier function remains undefined. Previous studies have shown that loss of KRIT1 increases the production of reactive oxygen species (ROS) and exacerbates vascular permeability triggered by several inflammatory stimuli, but not TNF-α...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28810587/association-of-polycystic-ovary-syndrome-with-metabolic-syndrome-and-gestational-diabetes-aggravated-complication-of-pregnancy
#7
Kui Yao, Ce Bian, Xia Zhao
Polycystic ovary syndrome (PCOS) affects 5-20% of the reproductive age women globally. PCOS is diagnosed by the presence of hyperandrogenism, oligo-anovulation, and polycystic morphology of at least one ovary. Insulin resistance (IR), hyperinsulinemia and associated metabolic abnormalities including metabolic syndrome play a significant role in the development of PCOS. The chances of developing MS in PCOS women was shown to increase by almost 14-fold in patients with increasing body mass index. Even in the absence of overt obesity, a preferential deposition of intra-abdominal fat is noted in PCOS women and this intra-abdominal fat leads to impaired insulin action and functional IR and hyperandrogenism...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28810533/deltamethrin-induced-oxidative-stress-in-kidney-and-brain-of-rats-protective-effect-of-artemisia-campestris-essential-oil
#8
Mongi Saoudi, Riadh Badraoui, Houda Bouhajja, Marwa Ncir, Fatma Rahmouni, Malek Grati, Kamel Jamoussi, Abdelfattah El Feki
Artemisia campestris (Asteraceae) is widely used in traditional medicine in Southern Tunisia as a decoction for its antivenom, anti-inflammatory, antirheumatic, and antimicrobial activities. A. campestris essential oil (ACEO) was obtained by hydrodistillation from the aerial parts, since it has beneficial and therapeutic effects. Deltamethrin is a synthetic pyrethroid with broad spectrum activities against acaricides and insects and widely used for veterinary and agricultural purposes. Exposure to deltamethrin leads to nephrotoxic and neurotoxic side effects for human and many species including birds and fish...
August 11, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28809841/measuring-neuromuscular-junction-functionality
#9
Emanuele Rizzuto, Simona Pisu, Carmine Nicoletti, Zaccaria Del Prete, Antonio Musarò
Neuromuscular junction (NMJ) functionality plays a pivotal role when studying diseases in which the communication between motor neuron and muscle is impaired, such as aging and amyotrophic lateral sclerosis (ALS). Here we describe an experimental protocol that can be used to measure NMJ functionality by combining two types of electrical stimulation: direct muscle membrane stimulation and the stimulation through the nerve. The comparison of the muscle response to these two different stimulations can help to define, at the functional level, potential alterations in the NMJ that lead to functional decline in muscle...
August 6, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28808815/physiological-responses-and-antioxidant-enzyme-changes-in-sulla-coronaria-inoculated-by-cadmium-resistant-bacteria
#10
Manel Chiboub, Salwa Harzalli Jebara, Omar Saadani, Imen Challougui Fatnassi, Souhir Abdelkerim, Moez Jebara
Plant growth promoting bacteria (PGPB) may help to reduce the toxicity of heavy metals on plants growing in polluted soils. In this work, Sulla coronaria inoculated with four Cd resistant bacteria (two Pseudomonas spp. and two Rhizobium sullae) were cultivated in hydroponic conditions treated by Cd; long time treatment 50 µM CdCl2 for 30 days and short time treatment; 100 µM CdCl2 for 7 days. Results showed that inoculation with Cd resistant PGPB enhanced plant biomass, thus shoot and root dry weights of control plants were enhanced by 148 and 35% respectively after 7 days...
August 14, 2017: Journal of Plant Research
https://www.readbyqxmd.com/read/28808769/the-genetic-characteristics-in-cytology-and-plant-physiology-of-two-wheat-triticum-aestivum-near-isogenic-lines-with-different-freezing-tolerances
#11
Wenqiang Wang, Qunqun Hao, Wenlong Wang, Qinxue Li, Wei Wang
Freezing tolerance in taft plants relied more upon an ABA-independent- than an ABA-dependent antifreeze signaling pathway. Two wheat (Triticum aestivum) near isogenic lines (NIL) named tafs (freezing sensitivity) and taft (freezing tolerance) were isolated in the laboratory and their various cytological and physiological characteristics under freezing conditions were studied. Proplastid, cell membrane, and mitochondrial ultrastructure were less damaged by freezing treatment in taft than tafs plants. Chlorophyll, ATP, and thylakoid membrane protein contents were significantly higher, but malondialdehyde content was significantly lower in taft than tafs plants under freezing condition...
August 14, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28808393/evaluation-of-the-antidiabetic-properties-of-s-1708-mulberry-variety
#12
Brijesh Ranjan, Randhir Kumar, Neeraj Verma, Swati Mittal, Pranab Lal Pakrasi, R Venkatesh Kumar
BACKGROUND: Diabetes is a metabolic disease prevalent worldwide in all age group of people. The source of diabetes is due to an oxidation process that can produce free radicals. An increase in oxidative free radicals in the body is reported to be one of the several causes of diabetes. The best remedy to combat oxidative stress is the use of antioxidants, which inhibit and scavenge free radicals. AIM: This study has been undertaken to evaluate the antioxidant activity and antidiabetic effect of mulberry leaf extract in diabetic mice...
July 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28808392/antiurolithiatic-effect-of-sirupeelai-samoola-kudineer-a-polyherbal-siddha-decoction-on-ethylene-glycol-induced-renal-calculus-in-experimental-rats
#13
A Hannah Rachel Vasanthi, V Muthulakshmi, V Gayathri, R Manikandan, S Ananthi, Sarah Kuruvilla
BACKGROUND: Sirupeelai Samoola Kudineer (SK), a polyherbal decoction containing four medicinal plants has been used in Siddha system of medicine, practiced in Southern parts of India for the management of urolithiasis. OBJECTIVE: The present study is carried out to scientifically validate the traditional claim and to study the mechanism of action of the drug. MATERIALS AND METHODS: In the present study, anti-urolithiatic effect of SK was evaluated in Sprague-Dawley rats using ethylene glycol through drinking water and intraperitoneal injection of sodium oxalate...
July 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28807745/acute-toxicity-of-functionalized-single-wall-carbon-nanotubes-a-biochemical-histopathologic-and-proteomics-approach
#14
Homa Ahmadi, Mohammad Ramezani, Rezvan Yazdian Robati, Behzad Behnam, Kamal Razavi Azarkhiavi, Azadeh Hashem Nia, Ahad Mokhtarzadeh, Maryam Matbou Riahi, Bibi Marjan Razavi, Khalil Abnous
Recently carbon nanotubes (CNTs) showed promising potentials in different biomedical applications but their safe use in humans and probable toxicities are still challenging. The aim of this study was to determine the acute toxicity of functionalized single walled carbon nanotubes (SWCNTs). In this project, PEGylated and Tween functionalized SWCNTs were prepared. BALB/c mice were randomly divided into nine groups, including PEGylated SWCNTs (75,150μg/mouse) and PEG, Tween80 suspended SWCNTs, Tween 80 and a control group (intact mice)...
August 11, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28807721/selenopheno-quinolinones-and-coumarins-promote-cancer-cell-apoptosis-by-ros-depletion-and-caspase-7-activation
#15
Ilona Domracheva, Iveta Kanepe-Lapsa, Ludmila Jackevica, Jelena Vasiljeva, Pavel Arsenyan
AIM: This study was designed to investigate the mechanism underlying cancer cell apoptosis caused by selenophenoquinolinones and coumarins. MATERIALS AND METHODS: Twelve derivatives were studied according to their ability to suppress the proliferation of cancer cells in vitro (i.e., HepG2, MH-22A, MCF-7), induce cell apoptosis, modulate cellular antioxidant enzyme system activities (i.e., SOD, GPx, TrxR), influence the level of ROS, and modulate caspase activity...
August 11, 2017: Life Sciences
https://www.readbyqxmd.com/read/28807562/targeting-signal-transducers-and-activators-of-transcription-stat-in-human-cancer-by-dietary-polyphenolic-antioxidants
#16
REVIEW
Hamed Amani, Marjan Ajami, Solmaz Nasseri Maleki, Hamidreza Pazoki-Toroudi, Maria Daglia, Arold Jorel Tsetegho Sokeng, Arianna Di Lorenzo, Seyed Fazel Nabavi, Kasi Pandima Devi, Seyed Mohammad Nabavi
Over the course of the last three decades, a large body of evidence has shown that polyphenols, the secondary metabolites occurring in plant foods and beverages, exert protective effects due to their antioxidant activity mediated through different mechanisms ranging from direct radical scavenging and metal chelating activities, to the capacity to inhibit pro-oxidant enzymes and to target specific cell-signalling pathways. In the last decade, dietary components, and polyphenols in particular have gained considerable attention as chemopreventive agents against different types of cancer...
August 11, 2017: Biochimie
https://www.readbyqxmd.com/read/28806986/antihyperlipidaemic-and-hepatoprotective-activities-of-acidic-and-enzymatic-hydrolysis-exopolysaccharides-from-pleurotus-eryngii-si-04
#17
Chen Zhang, Juan Li, Jing Wang, Xingling Song, Jianjun Zhang, Shang Wu, Chunlong Hu, Zhiyuan Gong, Le Jia
BACKGROUND: Hyperlipidaemia is the major risk factor contributing to the development and progression of atherosclerosis, fatty liver and cerebrovascular disease. Pleurotus eryngii (P. eryngii) is rich in biologically active components, especially polysaccharides that exhibit various biological activities, including reducing blood lipids. In the present study, three novel polysaccharide types, including exopolysaccharides (EPS), enzymatic EPS (EEPS) and acidic EPS (AEPS) were isolated, and the hypolipidaemic and hepatoprotective effects were investigated to better understand possible hypolipidaemic mechanisms and their hepatoprotective effects...
August 14, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28806973/protective-effects-of-orange-citrus-sinensis-l-peel-aqueous-extract-and-hesperidin-on-oxidative-stress-and-peptic-ulcer-induced-by-alcohol-in-rat
#18
Slimen Selmi, Kais Rtibi, Dhekra Grami, Hichem Sebai, Lamjed Marzouki
BACKGROUND: Massive alcohol drinking can lead to gastric ulcer. In the present study we investigated the gastroprotective effect of Citrus sinensis peel aqueous extract (CSPE) and Hesperidin (H) in ethanol (EtOH) induced oxidative stress and peptic ulcer in rats. METHODS: Seventy adult male Wistar rats were divided into seven groups of 10 each: control, EtOH (4 g/kg b.w.), EtOH + various doses of CSPE (100, 200 and 400 mg/kg, b.w.), EtOH + Hesperidin (50 mg/kg, p...
August 14, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28806972/overexpression-of-arabidopsis-p3b-increases-heat-and-low-temperature-stress-tolerance-in-transgenic-sweetpotato
#19
Chang Yoon Ji, Rong Jin, Zhen Xu, Ho Soo Kim, Chan-Ju Lee, Le Kang, So-Eun Kim, Hyeong-Un Lee, Joon Seol Lee, Chang Ho Kang, Yong Hun Chi, Sang Yeol Lee, Yiping Xie, Hongmin Li, Daifu Ma, Sang-Soo Kwak
BACKGROUND: Sweetpotato (Ipomoea batatas [L.] Lam) is suitable for growth on marginal lands due to its abiotic stress tolerance. However, severe environmental conditions including low temperature pose a serious threat to the productivity and expanded cultivation of this crop. In this study, we aimed to develop sweetpotato plants with enhanced tolerance to temperature stress. RESULTS: P3 proteins are plant-specific ribosomal P-proteins that act as both protein and RNA chaperones to increase heat and cold stress tolerance in Arabidopsis...
August 14, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28806968/cardamom-powder-supplementation-prevents-obesity-improves-glucose-intolerance-inflammation-and-oxidative-stress-in-liver-of-high-carbohydrate-high-fat-diet-induced-obese-rats
#20
Md Mizanur Rahman, Mohammad Nazmul Alam, Anayt Ulla, Farzana Akther Sumi, Nusrat Subhan, Trisha Khan, Bishwajit Sikder, Hemayet Hossain, Hasan Mahmud Reza, Md Ashraful Alam
BACKGROUND: Cardamom is a well-known spice in Indian subcontinent, used in culinary and traditional medicine practices since ancient times. The current investigation was untaken to evaluate the potential benefit of cardamom powder supplementation in high carbohydrate high fat (HCHF) diet induced obese rats. METHOD: Male Wistar rats (28 rats) were divided into four different groups such as Control, Control + cardamom, HCHF, HCHF + cardamom. High carbohydrate and high fat (HCHF) diet was prepared in our laboratory...
August 14, 2017: Lipids in Health and Disease
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