54,559 results match your criteria myeloperoxidase activity

Lycopene and Caffeic Acid Phenethyl Ester Affect Caspase-3 Activity, but Do Not Alter the NO Pathway in Lung Tissue Damage Induced by Cisplatin.

Pharmacology 2021 May 11:1-9. Epub 2021 May 11.

Department of biochemistry, Faculty of Medicine, University of Niš, Niš, Serbia.

Introduction: Antioxidants such as lycopene (LCP) and caffeic acid phenethyl ester (CAPE) represent ideal molecules for the treatment of different reactive oxygen species (ROS) associated disorders. Cisplatin is a chemotherapeutic agent, causing an increase in ROS and DNA damage, with numerous side effects, which include lung toxicity. In the presents study, we evaluated and mutually compared the potential of LCP and CAPE in preventing cisplatin-induced rat lung damage. Read More

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Effects of Bacillus Coagulans on growth performance, antioxidant capacity, immunity function, and gut health in broilers.

Poult Sci 2021 Mar 27;100(6):101168. Epub 2021 Mar 27.

Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health and Internet Technology, College of Animal Science and Technology, Zhejiang Agriculture & Forestry University, Hangzhou 311300, China. Electronic address:

This study evaluated the effects of Bacillus coagulans (B. coagulans) as an alternative to antibiotics on growth performance, antioxidant capacity, immunity function and gut health in broilers. A total of 480 one-day-old broilers were randomly divided into 3 treatments with 8 replicates comprising 20 broilers each. Read More

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Gut microbiota modulation and anti-inflammatory properties of mixed lactobacilli in dextran sodium sulfate-induced colitis in mice.

Food Funct 2021 May 11. Epub 2021 May 11.

Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, China. and Food College, Northeast Agricultural University, Harbin 150030, China.

Correlations between gut microbiota activities and inflammatory bowel disease (IBD) treatment are gaining research interest. In our previous study, Lactobacillus acidophilus KLDS 1.0901, Lactobacillus helveticus KLDS 1. Read More

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Arsenate toxicity to the marine microalga Chlorella vulgaris increases under phosphorus-limited condition.

Environ Sci Pollut Res Int 2021 May 11. Epub 2021 May 11.

State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China.

To understand the arsenic (As) toxicity to aquatic organisms in the phosphors-polluted aquatic ecosystem, the growth, the physiological response of Chlorella vulgaris exposed to As (V), and the underlying mechanism were investigated under different phosphorus (P) levels (0, 6, 13, 32 μM). Results showed that As toxicity to the marine microalga C. vulgaris was enhanced under P-limited condition. Read More

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AFM study of changes in properties of horseradish peroxidase after incubation of its solution near a pyramidal structure.

Sci Rep 2021 May 10;11(1):9907. Epub 2021 May 10.

Institute of Biomedical Chemistry, Pogodinskaya str., 10, Moscow, 119121, Russia.

In our present paper, the influence of a pyramidal structure on physicochemical properties of a protein in buffer solution has been studied. The pyramidal structure employed herein was similar to those produced industrially for anechoic chambers. Pyramidal structures are also used as elements of biosensors. Read More

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Effects of cadmium stress on growth and physiological characteristics of sassafras seedlings.

Sci Rep 2021 May 10;11(1):9913. Epub 2021 May 10.

Institute of Ecology and Forestry, College of Forestry, Sichuan Agricultural University, Chengdu, 611130, China.

The effects of cadmium stress on the growth and physiological characteristics of Sassafras tzumu Hemsl. were studied in pot experiments. Five Cd levels were tested [CT(Control Treatment) : 0 mg/kg, Cd5: 5 mg/kg, Cd20: 20 mg/kg, Cd50: 50 mg/kg, and Cd100: 100 mg/kg]. Read More

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Physiological concentrations of cyanide stimulate mitochondrial Complex IV and enhance cellular bioenergetics.

Proc Natl Acad Sci U S A 2021 May;118(20)

Chair of Pharmacology, Faculty of Science and Medicine, University of Fribourg, 1700 Fribourg, Switzerland

In mammalian cells, cyanide is viewed as a cytotoxic agent, which exerts its effects through inhibition of mitochondrial Complex IV (Cytochrome C oxidase [CCOx]). However, the current report demonstrates that cyanide's effect on CCOx is biphasic; low (nanomolar to low-micromolar) concentrations stimulate CCOx activity, while higher (high-micromolar) concentrations produce the "classic" inhibitory effect. Low concentrations of cyanide stimulated mitochondrial electron transport and elevated intracellular adenosine triphosphate (ATP), resulting in the stimulation of cell proliferation. Read More

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Shift in skin microbiota and immune functions of zebrafish after combined exposure to perfluorobutanesulfonate and probiotic Lactobacillus rhamnosus.

Ecotoxicol Environ Saf 2021 May 7;218:112310. Epub 2021 May 7.

State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China. Electronic address:

Dysbiosis of fish skin microbiome and immunity by environmental pollutants are rarely studied in toxicological research in spite of their importance for fish health. In the present study, adult zebrafish were exposed to 0 and 10 μg/L of perfluorobutanesulfonate (PFBS) for 40 days, with or without the supplementation of probiotic Lactobacillus rhamnosus, with objectives to explore the interaction between PFBS pollutant and probiotic bacteria on skin mucosal microbiota and immune response. Amplicon sequencing analysis found that PFBS alone significantly disturbed the microbial community composition and abundance on the skin, favoring the growth of stress-tolerant bacteria (e. Read More

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Role of IL-36γ/IL-36R Signaling in Corneal Innate Defense Against Candida albicans Keratitis.

Invest Ophthalmol Vis Sci 2021 May;62(6):10

Departments of Ophthalmology and Anatomy and Cell Biology Wayne State University School of Medicine, Detroit, Michigan, United States.

Purpose: Interleukin (IL)-36 cytokines have been shown to play either beneficial or detrimental roles in the infection of mucosal tissues in a pathogen-dependent manner, but their involvement in fungal keratitis remains elusive. We herein investigated their expression and function in mediating corneal innate immunity against Candida albicans infection.

Methods: Gene expression in mouse corneas with or without C. Read More

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Enhanced antioxidant capacity prevents epitranscriptomic and cardiac alterations in adult offspring gestationally-exposed to ENM.

Nanotoxicology 2021 May 8:1-20. Epub 2021 May 8.

Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV, USA.

Maternal engineered nanomaterial (ENM) exposure during gestation has been associated with negative long-term effects on cardiovascular health in progeny. Here, we evaluate an epitranscriptomic mechanism that contributes to these chronic ramifications and whether overexpression of mitochondrial phospholipid hydroperoxide glutathione peroxidase (mPHGPx) can preserve cardiovascular function and bioenergetics in offspring following gestational nano-titanium dioxide (TiO) inhalation exposure. Wild-type (WT) and mPHGPx (Tg) dams were exposed to nano-TiO aerosols with a mass concentration of 12. Read More

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Analysing fractions and essential oil for neuroprotective potential against anxiety, depression, and amnesia.

3 Biotech 2021 May 26;11(5):240. Epub 2021 Apr 26.

Department of Pharmaceutical Sciences, Dibrugarh University, Dibrugarh, Assam 786004 India.

Scientific pieces of evidence support the pharmacological activity of for its antidepressant, analgesic, anticonvulsant and antioxidant effect. Here, we evaluate the bioactivity of essential oil and the various polarity-based solvent partitioned fractions obtained from for anti-amnesia, anxiolytic and antidepressant activities using Elevated plus maze and Morris water maze models. The cold maceration technique using methanol was adopted for extraction from dried powdered rhizomes and essential oil was extracted by hydrodistillation method. Read More

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Silicon supplementation improves early blight resistance in Mill by modulating the expression of defense-related genes and antioxidant enzymes.

3 Biotech 2021 May 22;11(5):232. Epub 2021 Apr 22.

Centre of Research for Development, University of Kashmir, Srinagar, Jammu and Kashmir 190006 India.

Early blight is the most devastating disease in tomato which causes huge yield losses across the globe. Hence, development of specific, efficient and ecofriendly tools are required to increase the disease resistance in tomato plants. Here, we systematically investigate the defensive role and priming effect of silicon (Si) in tomato plants under control and infected conditions. Read More

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Exopolysaccharides from modulates the antioxidant status of 1,2-dimethyl hydrazine-induced colon cancer rat model.

3 Biotech 2021 May 19;11(5):225. Epub 2021 Apr 19.

Department of Biotechnology, Kalasalingam Academy of Research and Education, Krishnankoil, 626126 Tamilnadu India.

The aim of the current study is to ascertain the anticancer activity of exopolysaccharides (EPS) from probiotic in the 1, 2-dimethyl hydrazine (DMH)-induced colon cancer rat model and to determine the antioxidant status. Rats were divided into five groups of six animals each. Group I served as control, group II served as cancer control (DMH alone administered), group III as standard drug control (5-FU along with DMH) and group IV and V received EPS in two doses (200 mg/kg body weight and 400 mg/kg body weight along with DMH). Read More

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Enzymatic Cascade Reactions Mediated by Highly Efficient Biomimetic Quasi Metal-Organic Frameworks.

ACS Appl Mater Interfaces 2021 May 9. Epub 2021 May 9.

Guangdong Provincial Key Lab of Green Chemical Product Technology, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China.

The integration of chemo- and enzymatic catalysis for effective multistep cascades has presented critical challenges for decades. In this work, the biomimetic quasi NH-MIL-101 (qNM) with highly efficient peroxidase-like activity was synthesized via a palmitic acid-induced strategy followed by pyrolysis. The effects of the amount of palmitic acid and calcination temperature on the synthesis of qNM were optimized. Read More

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Açaí (Euterpe oleracea Martius) supplementation improves oxidative stress biomarkers in liver tissue of dams fed a high-fat diet and increases antioxidant enzymes' gene expression in offspring.

Biomed Pharmacother 2021 May 6;139:111627. Epub 2021 May 6.

Nucleus of Research in Biological Sciences (NUPEB), Universidade Federal de Ouro Preto, Minas Gerais, Brazil; School of Nutrition, Universidade Federal de Ouro Preto, Minas Gerais, Brazil. Electronic address:

Lipids excess from an uterine environment can increase free radicals production of and thus induce oxidative status imbalance, a key factor for progression of non-alcoholic fatty liver disease (NAFLD) in offspring. Food antioxidant components in maternal diet may play an important role in preventing offspring metabolic disorders. The objective of the study was to evaluate the effects of açaí pulp supplementation on maternal high-fat diet, by assessing activity and expression of antioxidant enzymes and biomarkers of oxidative stress in the liver. Read More

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Role of temperature and co-infection in mediating the immune response of goldfish.

Microb Pathog 2021 May 6:104896. Epub 2021 May 6.

Aquatic Environment and Health Management Division, ICAR- Central Institute of Fisheries Education, Mumbai, 400061, Maharashtra, India. Electronic address:

Aquatic Pathogens are expected to encounter tremendous levels of variation in their environment - both abiotic and biotic. Here we examined the change in innate immune parameters and mortality pattern of Carassius auratus during the interaction of co-infection due to an ectoparasite, Argulus and bacteria Aeromonas hydrophila, along with a temperature gradient. Experimental fish were assigned randomly to six treatment groups (T1-T6). Read More

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Structural differences of neutrophil extracellular traps induced by biochemical and microbiologic stimuli under healthy and autoimmune milieus.

Immunol Res 2021 May 8. Epub 2021 May 8.

Clinical Immunology Research Department of Biochemical Sciences Faculty, Universidad Autónoma "Benito Juárez" de Oaxaca, Oaxaca City, Mexico.

Neutrophil extracellular traps (NETs) are networks of decondensed chromatin loaded with antimicrobial peptides and enzymes produced against microorganisms or biochemical stimuli. Since their discovery, numerous studies made separately have revealed multiple triggers that induce similar NET morphologies allowing to classify them as lytic or non-lytic. However, the variability in NET composition depending on the inducer agent and the local milieu under similar conditions has been scarcely studied. Read More

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Analysis of Silymarin-Modulating Effects against Acrylamide-Induced Cerebellar Damage in Male Rats: Biochemical and Pathological Markers.

J Chem Neuroanat 2021 May 6:101964. Epub 2021 May 6.

Department of Zoology, Faculty of Science, Alexandria University, Alexandria, Egypt; Department of Biological Sciences, Faculty of Science, Beirut Arab University, Lebanon. Electronic address:

Background: Acrylamide (ACR) is a well-proven neurotoxin and potential food carcinogen in humans and rodent models. Silymarin (SIL) is a flavonoid mixture isolated from seeds, leaves, and fruits of Silymarin marianum (milk thistle) that possesses a free-radical scavenging effect.

Objective: In this work, the primary focus was to investigate the efficacy of SIL to mitigate ACR-induced subacute neurotoxic effects and oxidative changes in rat cerebellum. Read More

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Ferrocene-functionalized hybrid hydrogel dressing with high-adhesion for combating biofilm.

Mater Sci Eng C Mater Biol Appl 2021 Jun 18;125:112111. Epub 2021 Apr 18.

Department of Microbiology, College of Life Science, Hunan Normal University, Changsha 410081, Hunan, People's Republic of China; State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal University, Changsha 410081, Hunan, People's Republic of China. Electronic address:

Bacterial infection is a common phenomenon in the process of postoperative wound healing. In severe cases, it may even lead to life-threatening, which brings a heavy burden to the clinical treatment and causes huge losses to the society and economy. As one of the most commonly applied medical materials for wound treatment, hydrogel dressings are mainly used to cover and protect wounds and provide a favorable environment to facilitate wound healing. Read More

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Early sex determination of Ginkgo biloba based on the differences in the electrocatalytic performance of extracted peroxidase.

Bioelectrochemistry 2021 Apr 26;140:107829. Epub 2021 Apr 26.

Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, PR China.

Ginkgo biloba is a dioecious plant. Male ginkgoes are mainly used in landscaping, while females are mainly used for fruit production. However, sex identification of ginkgo is a difficult task, especially at the seedling stage. Read More

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Neuroprotective effect of 6-hydroxy-2,2,4-trimethyl-1,2-dihydroquinoline mediated via regulation of antioxidant system and inhibition of inflammation and apoptosis in a rat model of cerebral ischemia/reperfusion.

Biochimie 2021 May 5. Epub 2021 May 5.

Department of Pathological Anatomy, Voronezh State Medical University named after N.N. Burdenko, Russia.

The aim of the study was the assessment of the neuroprotective potential of 6-hydroxy-2,2,4-trimethyl-1,2-dihydroquinoline (DHQ) and its effect on inflammation, apoptosis, and transcriptional regulation of the antioxidant system in cerebral ischemia/reperfusion (CIR) in rats. The CIR rat model was constructed using the bilateral common carotid artery occlusion followed by reoxygenation. DHQ was administered at a dose of 50 mg/kg for three days. Read More

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Molecular interaction between pectin and catechin/procyanidin in simulative juice model: Insights from spectroscopic, morphology, and antioxidant activity.

J Food Sci 2021 May 7. Epub 2021 May 7.

Shanghai Food Safety and Engineering Technology Research Center, Bor S. Luh Food Safety Research Center, Key Lab of Urban Agriculture Ministry of Agriculture, School of Agriculture & Biology, Shanghai Jiao Tong University, Shanghai, China.

The interactions between polysaccharides and phenolics in foods affect their physicochemical properties and bioactivity. Pectin and catechin/procyanidin present in plants ubiquitously and attracting more attentions for the potential health benefits. This work investigates the interactions between high methoxyl pectin and catechin/procyanidin in a simulative juice model using multiple microscopic and spectroscopic approaches and their influences on the antioxidant activity of phenolics were evaluated in the Caco-2 cells model. Read More

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A crucial review on polycyclic aromatic Hydrocarbons - Environmental occurrence and strategies for microbial degradation.

Chemosphere 2021 Apr 28;280:130608. Epub 2021 Apr 28.

Department of Microbiology, Alagappa University, Karaikudi, Tamil Nadu, India. Electronic address:

Over the last century, contamination of polycyclic aromatic hydrocarbons (PAHs) has risen tremendously due to the intensified industrial activities like petrochemical, pharmaceutical, insecticides and fertilizers applications. PAHs are a group of organic pollutants with adverse effects on both humans and the environment. These PAHs are widely distributed in various ecosystems including air, soil, marine water and sediments. Read More

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Roles of selenium in mineral plant nutrition: ROS scavenging responses against abiotic stresses.

Plant Physiol Biochem 2021 Apr 29;164:27-43. Epub 2021 Apr 29.

Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP), Rua Domingos da Costa Lopes 780, Postal Code 17602-496, Tupã, SP, Brazil. Electronic address:

Agronomic biofortification of crops with selenium (Se) is an important strategy to minimize hidden hunger and increase nutrient intake in poor populations. Selenium is an element that has several physiological and biochemical characteristics, such as the mitigation of different types of abiotic stress. Selenoproteins act as powerful antioxidants in plant metabolism through the glutathione peroxidase (GSH) pathway, and provide an increased activity for enzymatic (SOD, CAT, and APX) and non-enzymatic (ascorbic acid, flavonoids, and tocopherols) compounds that act in reactive oxygen species (ROS) scavenging system and cell detoxification. Read More

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LncRNA NEAT1 inhibition upregulates miR-16-5p to restrain the progression of sepsis-induced lung injury via suppressing BRD4 in a mouse model.

Int Immunopharmacol 2021 May 4;97:107691. Epub 2021 May 4.

Department of Emergency, the First People's Hospital of Yunnan Province, Kunming, 650032 Yunnan, China; The Affiliated Hospital of Kunming University of Science and Technology, Kunming, 650032 Yunnan, China. Electronic address:

Objective: Long non-coding RNAs (lncRNAs) are known to sponge microRNAs (miRNAs) to regulate biological processes. However, the role of nuclear paraspeckle assembly transcript 1 (NEAT1) binding miR-16-5p in sepsis-induced lung injury remains largely unknown. We aim to explore the effect of NEAT1 sponging miR-16-5p on sepsis-induced lung injury via regulating bromodomain containing 4 (BRD4). Read More

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Proteomic analysis of liver tissues in chicken embryo at Day 16 and Day 20 reveals antioxidant mechanisms.

J Proteomics 2021 May 4:104258. Epub 2021 May 4.

College of Food and Biological Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei, Anhui 230009, PR China. Electronic address:

To investigate the mechanisms of the defense system and antioxidant defense system during chicken embryo development, protein profiling of liver tissues in chicken embryo at Day 16 and Day 20 was conducted. TMT was used to analyze the liver tissues proteomes with significantly different activity of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) in chicken embryo. PRM was operated to validate the target differentially abundant proteins (DAPs) using the same samples. Read More

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Ferulic acid positively modulates the inflammatory response to septic liver injury through the GSK-3β/NF-κB/CREB pathway.

Life Sci 2021 May 4:119584. Epub 2021 May 4.

Department of Emergency Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, PR China. Electronic address:

Aims: Ferulic acid (FA) is a component found in plants that has free radical scavenging and liver-protective properties. Acute liver injury (ALI) is a serious complication of sepsis and is closely associated with changes in the levels of inflammatory factors. This study was taken to examine the role of FA in cecal ligation and perforation (CLP)-induced murine ALI and lipopolysaccharide (LPS)-induced cellular ALI models. Read More

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A green and facile approach to a graphene-based peroxidase-like nanozyme and its application in sensitive colorimetric detection of L-cysteine.

Anal Bioanal Chem 2021 May 7. Epub 2021 May 7.

CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Anhui Key Laboratory of Environmental Toxicology and Pollution Control Technology, Hefei Institute of IntelligentAgriculture, Institute of Intelligent Machines,Hefei Institutes of Physical Science, Chinese Academy of Sciences (CAS), Hefei, 230031, Anhui, China.

A facile and green approach to the preparation of peroxidase-like nanozymes by reducing and functionalizing graphene oxide (rGO) with Ganoderma polysaccharide (GP) has been achieved in this work. Our results showed that the as-fabricated nanozyme, namely rGO-GP, possessed the excellent property of simulating peroxidase with higher catalytic activity compared with GO or rGO obtained by using chitosan, which may be due to the better dispersion of rGO-GP in the solution. Steady-state kinetics studies further showed that the catalytic process conformed to Michaelis-Menten equation and ping-pong mechanism. Read More

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Released Myeloperoxidase Attenuates Neutrophil Migration and Accumulation in Inflamed Tissue.

Front Immunol 2021 20;12:654259. Epub 2021 Apr 20.

Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL, United States.

Neutrophil (PMN) recruitment to sites of insult is critical for host defense, however excessive PMN activity and tissue accumulation can lead to exacerbated inflammation and injury. Myeloperoxidase (MPO) is a PMN azurophilic granule enzyme, which together with HO, forms a powerful antimicrobial system designed to kill ingested bacteria. Intriguingly, in addition to intracellular killing of invading microorganisms and extracellular tissue damage due generation of ROS, soluble MPO has been directly implicated in modulating cellular responses and tissue homeostasis. Read More

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pH induced conformational alteration in human peroxiredoxin 6 might be responsible for its resistance against lysosomal pH or high temperature.

Sci Rep 2021 May 6;11(1):9657. Epub 2021 May 6.

Dr. B. R. Ambedkar Center for Biomedical Research, University of Delhi, Delhi, 110007, India.

Peroxiredoxin 6 (Prdx6), the ubiquitously expressed enzyme belonging to the family of peroxidases, namely, peroxiredoxins, exhibits a unique feature of functional compartmentalization within cells. Whereas, the enzyme localized in cytosol shows glutathione peroxidase activity, its lysosomal counterpart performs calcium independent phospholipase A2 (aiPLA2) activity. Like any true moonlighting protein, these two activities of Prdx6 are mutually exclusive of each other as a function of the pH of the cellular compartments. Read More

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