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Oxidative stress biomarkers

Stefania Squadrone, Paola Brizio, Cecilia Mancini, Maria Cesarina Abete, Alfredo Brusco
Spinocerebellar ataxia type 2 (SCA2) is a neurological disorder characterized by cerebellar dysfunction. The possible association between metals and neurodegenerative diseases is under constant investigation, with particular focus on their involvement in oxidative stress and their potential role as biomarkers of these pathologies. Whole blood samples of SCA2 patients and of healthy individuals were subjected to multi-elemental analysis by inductively coupled plasma-mass spectrometry (ICP-MS). Reduced levels of manganese and copper were found in SCA2 patients, while zinc and vanadium concentrations were significantly higher in patients compared to controls...
May 2018: Journal of Trace Elements in Medicine and Biology
Samia Hadj Ahmed, Wafa Kharroubi, Nadia Kaoubaa, Amira Zarrouk, Fathi Batbout, Habib Gamra, Mohamed Fadhel Najjar, Gérard Lizard, Isabelle Hininger-Favier, Mohamed Hammami
BACKGROUND: Nutritional choices, which include the source of dietary fatty acids (FA), have an important significant impact on coronary artery disease (CAD). We aimed to determine on patients with CAD the relationships between Trans fatty acids (Trans FA) and different CAD associated parameters such as inflammatory and oxidative stress parameters in addition to Gensini score as a vascular severity index. METHODS: Fatty acid profiles were established by gas chromatography from 111 CAD patients compared to 120 age-matched control group...
March 15, 2018: Lipids in Health and Disease
Stefano Magni, François Gagné, Chantale André, Camilla Della Torre, Joëlle Auclair, Houda Hanana, Camilla Carla Parenti, Francesco Bonasoro, Andrea Binelli
Microplastics (MPs), plastic debris smaller than 5mm, are widely found in both marine and freshwater ecosystems. However, few studies regarding their hazardous effects on inland water organisms, have been conducted. For this reason, the aim of our research was the evaluation of uptake and chronic toxicity of two mixtures (MIXs) of virgin polystyrene microbeads (PMs) of 10μm and 1μm in size (MIX 1, with 5×105 of 1μmsizePMs/L and 5×105 of 10μmsizePMs/L, and MIX 2 with 2×106 of 1μmsizePMs/L and 2×106 of 10μmsizePMs/L) on freshwater zebra mussel Dreissena polymorpha (Mollusca: Bivalvia) during 6 exposure days...
March 12, 2018: Science of the Total Environment
Yuko Arita, Michael Kirk, Neha Gupta, Ramkumar Menon, Darios Getahun, Morgan R Peltier
OBJECTIVE: Tributyltin (TBT) is a persistent pollutant but its effects on placental function are poorly understood as are its possible interactions with infection. We hypothesized that TBT alters the production of sex hormones and biomarkers for inflammation and neurodevelopment in an infection-dependent manner. METHODS: Placental explant cultures were treated with 0-5000 nM TBT in the presence and absence of Escherichia coli. A conditioned medium was harvested and concentrations of steroids (progesterone, P4; testosterone, T and estradiol, E2) as well as biomarkers of inflammation [interleukin (IL)-1β (IL-1β), tumor necrosis factor (TNF-α), IL-10, IL-6, soluble glycoprotein 130 (sgp-130) and heme oxygenase-1 (HO-1)], oxidative stress [8-iso-prostaglandin (8-IsoP)] and neurodevelopment [brain-derived neurotrophic factor (BDNF)] were quantified...
March 15, 2018: Journal of Perinatal Medicine
Dov Lichtenberg, Ilya Pinchuk, Daniela Weber
The commonly used term "oxidative stress" (OS) is intuitively defined as an excess of pro-oxidative compounds, over antioxidants. The redox status is homeostatically controlled because on one hand, pro-oxidants are essential for normal body function, whereas, on the other hand, pro-oxidants (and OS) are associated with many diseases due to the risk of oxidative damage. One reason "to monitor the OS" is to identify people under OS and treat people under high OS by antioxidants, because it is believed that people under OS benefit from antioxidant supplementation more than others...
March 15, 2018: BioFactors
Neeraj Kumar, Kishore Kumar Krishnani, Sanjay Kumar Gupta, Narendra Pratap Singh
Nanotechnology is a novel arena with promising applications in the field of medicine, industry, and agriculture including fisheries. Cross-disciplinary interactions and the application of this technology in biological systems have led to the innovation of novel nanoparticle antioxidants, which are the subject of our study. In context with above background, we designed an experiment on nano-silver to elucidate its role for mitigation of abiotic and biotic stress. Three diets were formulated viz. silver nanoparticles (Ag-NPs) incorporated at 0...
March 14, 2018: Environmental Science and Pollution Research International
Ivana Vrhovac Madunić, Josip Madunić, Maja Antunović, Mladen Paradžik, Vera Garaj-Vrhovac, Davorka Breljak, Inga Marijanović, Goran Gajski
Apigenin is found in several dietary plant foods such as vegetables and fruits. To investigate potential anticancer properties of apigenin on human breast cancer, ER-positive MCF-7 and triple-negative MDA MB-231 cells were used. Moreover, toxicological safety of apigenin towards normal cells was evaluated in human lymphocytes. Cytotoxicity of apigenin towards cancer cells was evaluated by MTT assay whereas further genotoxic and oxidative stress parameters were measured by comet and lipid peroxidation assays, respectively...
March 14, 2018: Naunyn-Schmiedeberg's Archives of Pharmacology
Arnold Groehler, Stefan Kren, Qinglu Li, Maggie Robledo-Villafane, Joshua Schmidt, Mary Garry, Natalia Tretyakova
Myocardial infarction (MI) is a life-threatening condition that can occur when blood flow to the heart is interrupted due to a blockage in one or more of the coronary vessels. Current treatments of MI rapidly restore blood flow to the affected myocardium using thrombolytic agents or angioplasty. Adverse effects including inflammation, tissue necrosis, and ventricular dysfunction are, however, not uncommon following reperfusion therapy. These conditions are thought to be caused by a sudden influx of reactive oxygen species (ROS) to the affected myocardium...
March 11, 2018: Free Radical Biology & Medicine
Sunil S Adav, Jin Wei, Jingru Qian, Nicola Yi'An Gan, Leonard W L Yip, Siu Kwan Sze
PURPOSE: Primary angle-closure glaucoma (PACG) is associated with increased intraocular pressure, optic nerve damage, and progressive vision loss, but the molecular mechanism that underpins retinal ganglion neuropathy in PACG remains poorly understood. To better understand the pathogenesis of human PACG, we performed the first comprehensive proteomic analysis of aqueous humor (AH) samples from PACG patients and matched control donors to study pathogenic alteration in AH composition in disease...
March 13, 2018: International Ophthalmology
Bruna Mariáh da S E Silva, Gundisalvo P Morales, Ana Lúcia N Gutjahr, Kelson do C Freitas Faial, Bruno S Carneiro
In this study, trace element concentrations were measured in chelipod and gill samples of the crab U. cordatus by induced coupled plasma optical emission spectrometry (ICP OES). The element average concentrations between the structures were statistically compared. Gill concentrations of Cu and Zn were higher in female crabs, while in chelipods, Pb concentrations were higher in males. The concentration of Zn in crabs from Curuçá City were higher than the recommended by health agencies, but the provisional tolerable daily intake value (PTDI), for Zn and Cu, showed only 10 and 23% contribution, respectively...
March 14, 2018: Environmental Monitoring and Assessment
Ángel Sánchez-Illana, Anna Parra-Llorca, Diana Escuder-Vieco, Carmen Rosa Pallás-Alonso, María Cernada, María Gormaz, Máximo Vento, Julia Kuligowski
Oxidative stress derived biomarkers have been extensively studied for assessing pathological situations in the neonatal period and their usefulness for an early outcome prediction of oxidative stress related diseases in non-invasive biofluids could be demonstrated. This is the first report on a method for the simultaneous detection of a panel of oxidative stress related biomarkers for quantifying damage to proteins and DNA in human breast milk samples. A straightforward sample clean-up procedure using 1.5 mL of milk was developed and extracts were analyzed by ultra-performance liquid chromatography coupled to tandem mass spectrometry...
August 3, 2018: Analytica Chimica Acta
Nabeel Quryshi, Laura E Norwood Toro, Karima Ait-Aissa, Amanda Kong, Andreas M Beyer
Although chemotherapeutics can be highly effective at targeting malignancies, their ability to trigger cardiovascular morbidity is clinically significant. Chemotherapy can adversely affect cardiovascular physiology, resulting in the development of cardiomyopathy, heart failure and microvascular defects. Specifically, anthracyclines are known to cause an excessive buildup of free radical species and mitochondrial DNA damage (mt DNA) that can lead to oxidative stress-induced cardiovascular apoptosis. Therefore, oncologists and cardiologists maintain a network of communication when dealing with patients during treatment in order to treat and prevent chemotherapy-induced cardiovascular damage; however, there is a need to discover more accurate biomarkers and therapeutics to combat and predict the onset of cardiovascular side effects...
March 10, 2018: International Journal of Molecular Sciences
Hamid Tayebi Khosroshahi, Nosratola D Vaziri, Behzad Abedi, Bahlol Habibi Asl, Morteza Ghojazadeh, Wanghui Jing, Amir Mansur Vatankhah
INTRODUCTION: Systemic inflammation and oxidative stress play a central role in the pathogenesis of cardiovascular disease and numerous other complications of CKD. Recent studies demonstrated that consumption of a diet enriched with amylose (HAM-RS2), attenuates oxidative stress and inflammation, and improves intestinal microbiome in CKD rats. The present study was designed to explore the effect of dietary amylose supplementation in hemodialysis patients. METHODS: Forty-six stable hemodialysis patients were randomized to receive biscuits containing 20 g/day during the first four weeks and 25 g/day in the next four weeks of either HAM-RS2 or wheat-flour...
March 13, 2018: Hemodialysis International
Tiago Pereira-da-Silva, Madalena Coutinho Cruz, Catarina Carrusca, Rui Cruz Ferreira, Patrícia Napoleão, Miguel Mota Carmo
AIMS: Atherosclerosis is associated with altered circulating microRNA profiles. It is yet unclear whether the expression of these potential biomarkers differs according to the location of atherosclerosis. We assessed whether atherosclerosis of different arterial territories, except the coronary, is associated with specific circulating microRNA profiles. METHODS: A systematic search in PubMed, Web of Science, Embase, and Cochrane Library was carried out using a retrieval strategy including MESH and non-MSH terms...
2018: American Journal of Cardiovascular Disease
Muhammed Sedat Sakat, Korhan Kilic, Ayhan Kars, Mustafa Kara, Mustafa Sitki Gozeler
Objective: Tonsillectomy is one of the most common surgical procedures performed at ear, nose, and throat clinics. Chronic recurrent tonsillitis, obstructive tonsillitis, and halitosis are among the most common indications for surgery. Determining whether the infection is chronic and the patient's annual number of infections are important in estimating the necessity for surgery to be performed due to infectious causes. Red blood cell distribution width (RDW) is a numerical value present in normal complete blood count that provides information about erythrocytes and their dimensions...
February 2018: Eurasian Journal of Medicine
Luna Samanta, Ashok Agarwal, Nirlipta Swain, Rakesh Sharma, Banu Gopalan, Sandro C Esteves, Damayanthi Durairajanayagam, Edmund Sabanegh
PURPOSE: Varicocele may disrupt testicular microcirculation and induce hypoxia-ischemia related degenerative changes in testicular cells and spermatozoa. Superoxide production at low oxygen concentrations exacerbates oxidative stress in men with varicocele. Therefore, the present study was designed to study the role of mitochondrial redox regulation and its possible involvement in sperm dysfunction in varicocele-associated infertility. MATERIALS AND METHODS: Differentially expressed mitochondrial proteins were identified in 50 infertile men with varicocele and ten fertile controls by secondary LC-MS/MS data-driven in silico analysis...
March 9, 2018: Journal of Urology
Karen L Posey, Francoise Coustry, Jacqueline T Hecht
Cartilage oligomeric matrix protein (COMP) is a large pentameric glycoprotein that interacts with multiple extracellular matrix proteins in cartilage and other tissues. While, COMP is known to play a role in collagen secretion and fibrillogenesis, chondrocyte proliferation and mechanical strength of tendons, the complete range of COMP functions remains to be defined. COMPopathies describe pseudoachondroplasia (PSACH) and multiple epiphyseal dysplasia (MED), two skeletal dysplasias caused by autosomal dominant COMP mutations...
March 9, 2018: Matrix Biology: Journal of the International Society for Matrix Biology
Vineet Singh, Bhawna Pandey, Surindra Suthar
The increasing availability of antibiotics in wastewater has created a serious threat to non-target organisms in the environment. The aim of this study was to evaluate the potential toxicity of amoxicillin on duckweed Spirodela polyrhiza during a short-term exposure (7 d). The duckweed was exposed to a range of environmentally relevant (0.0001-0.01 mg L-1 ) and high (0.1 and 1 mg L-1 ) concentrations of amoxicillin. Subsequently, biomarkers of toxicity such as growth, pigments (Chl a, Chl b and carotenoids), antioxidative enzyme activity (catalase, CAT; superoxide dismutase, SOD; and ascorbate peroxidases, APX), and biochemical content (protein, lipid and starch) were analysed in their fronds...
March 5, 2018: Chemosphere
Jessica M Skeie, Benjamin T Aldrich, Andrew S Goldstein, Gregory A Schmidt, Cynthia R Reed, Mark A Greiner
The objective of this study was to characterize the proteome of the corneal endothelial cell layer and its basement membrane (Descemet membrane) in humans with various severities of type II diabetes mellitus compared to controls, and identify differentially expressed proteins across a range of diabetic disease severities that may influence corneal endothelial cell health. Endothelium-Descemet membrane complex tissues were peeled from transplant suitable donor corneas. Protein fractions were isolated from each sample and subjected to multidimensional liquid chromatography and tandem mass spectrometry...
2018: PloS One
Luciana Fernandes de Oliveira, Caroline Santos, Wagner Ezequiel Risso, Claudia Bueno Dos Reis Martinez
Metal bioaccumulation and oxidative stress biomarkers were determined in Prochilodus lineatus, in order to understand the effects of short-term exposure to a triple-mixture of Zn, Mn and Fe. Three independent tests were carried out, in which fish were exposed to three concentrations of Zn (0.18, 1.0 and 5.0 mg L-1 ), Mn (0.1, 0.5 and 5.0 mg L-1 ) and in the Mix test to Fe (5.0 mg L-1 ) and a mixture of Zn (1.0 mg L-1 ) + Mn (0.5 mg L-1 ), with and without Fe. After exposure for 96 h, tissues were removed for metal bioaccumulation analysis and oxidative stress biomarkers were determined in liver and DNA damage in blood cells...
March 12, 2018: Environmental Toxicology and Chemistry
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