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https://www.readbyqxmd.com/read/29236385/lipoxygenases-and-their-metabolites-in-formation-of-plant-stress-tolerance
#1
L M Babenko, M M Shcherbatiuk, T D Skaterna, I V Kosakivska
The review focuses on the analysis of new information concerning molecular enzymology of lipoxygenases – proteins involved in lipid peroxidation and found in animals and plants. Modern concept of structural features, catalytic characteristics and functions of lipoxygenase family enzymes as well as products of their catalytic activity in plants have been discussed and summarized. Issues of enzyme localization in plant cells and tissues, evolution and distribution of lipoxygenases, involvement in production of signaling substances involved in formation of adaptation response to abiotic and biotic stress factors and in regulation of lipoxygenase signal system activity are highlighted...
January 2017: Ukrainian Biochemical Journal
https://www.readbyqxmd.com/read/29236192/inhibitory-effect-of-streptococci-on-the-growth-of-m-catarrhalis-strains-and-the-diversity-of-putative-bacteriocin-like-gene-loci-in-the-genomes-of-s-pneumoniae-and-its-relatives
#2
L N Ikryannikova, M V Malakhova, G G Lominadze, I Yu Karpova, E S Kostryukova, N A Mayansky, A N Kruglov, E A Klimova, E S Lisitsina, E N Ilina, V M Govorun
S. pneumoniae is a facultative human pathogen causing a wide range of infections including the life-threatening pneumoniae or meningitis. It colonizes nasopharynx as well as its closest phylogenetic relatives S. pseudopneumoniae and S. mitis. Both the latter, despite the considerable morphological and phenotypic similarity with the pneumococcus, are considerably less pathogenic for humans and cause infections mainly in the immunocompromized hosts. In this work, we compared the inhibitory effect of S. pneumoniae and its relatives on the growth of Moraxella catarrhalis strains using the culture-based antagonistic test...
December 13, 2017: AMB Express
https://www.readbyqxmd.com/read/29235496/involvement-of-trpm2-and-trpv1-channels-on-hyperalgesia-apoptosis-and-oxidative-stress-in-rat-fibromyalgia-model-protective-role-of-selenium
#3
Esra Yüksel, Mustafa Nazıroğlu, Mehmet Şahin, Bilal Çiğ
Fibromyalgia (FM) results in pain characterized by low selenium (Se) levels, excessive Ca2+ influx, reactive oxygen species (ROS) production, and acidic pH. TRPM2 and TRPV1 are activated by ROS and acid; nevertheless, their roles have not been elucidated in FM. Therefore, we investigated the contribution of TRPM2 and TRPV1 to pain, oxidative stress, and apoptosis in a rat model of FM and the therapeutic potential of Se. Thirty-six rats were divided into four groups: control, Se, FM, and FM + Se. The Se treatment reduced the FM-induced increase in TRPM2 and TRPV1 currents, pain intensity, intracellular free Ca2+, ROS, and mitochondrial membrane depolarization in the sciatic (SciN) and dorsal root ganglion (DRGN) neurons...
December 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29235293/-chemical-constituents-from-petroleum-ether-fraction-of-swertia-chirayita-and-their-activities-in-vitro
#4
Rong-Rong You, Xue-Qing Chen, Dan-Dan He, Chang-Gao Huang, Yang Jin, Shi-Hui Qian, Jian-Ming Ju, Jun-Ting Fan
The present work is to study the chemical constituents from petroleum ether fraction of Tibetan medicine Swertia chirayita by column chromatography and recrystallization. The structures were identified by physical and chemical properties and spectral data as swerchirin (1), decussatin (2), 1,8-dihydroxy-3,5,7-trimethoxyxanthone (3), 1-hydroxy-3,5,7,8-tetramethoxyxanthone (4), bellidifolin (5), 1-hydroxy-3, 7-dimethoxyxanthone (6), methylswertianin (7), 1-hydroxy-3,5-dimethoxyxanthone (8), erythrodiol (9), oleanolic acid (10), gnetiolactone (11), scopoletin (12), sinapaldehyde (13), syringaldehyde (14), and β-sitosterol (15)...
October 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29235214/the-effect-of-administration-of-copper-nanoparticles-to-chickens-in-their-drinking-water-on-the-immune-and-antioxidant-status-of-the-blood
#5
Katarzyna Ognik, Iwona Sembratowicz, Ewelina Cholewińska, Jan Jankowski, Krzysztof Kozłowski, Jerzy Juśkiewicz, Zenon Zduńczyk
The aim of this experiment was to determine what dosage of copper (Cu) nanoparticles, added to a standard dietary supplementation with copper sulfate, would improve antioxidant and immune defense in chickens. The experiment was conducted with 126 broiler chickens assigned to seven treatments with three pens per treatment and six broiler chickens per pen. The basal-diet treatment did not receive Cu nanoparticles (nano-Cu) and as shown by analyses it was Cu-deficient (-29% vs. National Research Council (NRC) recommendations; 5...
December 12, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/29235030/catalytic-degradation-of-sulfaquinoxalinum-by-polyester-poly-4-vinylpyridine-nanofibers-supported-iron-phthalocyanine
#6
Nan Li, Panting Lu, Cuixia He, Wangyang Lu, Wenxing Chen
Iron (II) phthalocyanine (FePc) supported on electrospun polyester/poly-4-vinylpyridine nanofibers (PET/P4VP NFs) was prepared by stirring in tetrahydrofuran. The resulting product was confirmed and characterized by ultraviolet-visible diffuse reflectance spectroscopy, attenuated total reflection Fourier transform infrared spectra, X-ray photoelectron spectroscopy, gas chromatography/mass spectrometry, and ultra-performance liquid chromatography. More than 95% of sulfaquinoxalinum (SQX) could be removed by the activation of hydrogen peroxide in the presence of FePc-P4VP/PET with a PET and P4VP mass ratio of 1:1...
December 12, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29234979/neuroprotective-effects-of-moringa-oleifera-bio-guided-gc-ms-identification-of-active-compounds-in-diabetic-neuropathic-pain-model
#7
Karim Raafat, Fadi Hdaib
OBJECTIVES: To explore the phytotherapeutic-activities of Moringa oleifera (MO) seeds on painful diabetic neuropathy in alloxan-induced diabetic mice. METHODS: The bio-guided fractionation of MO utilizing column chromatography aided with GC-MS was used to detect the most active constituent of MO. Hyperalgesia, using tail-flick and hot-plate latency experiments, and mechanical-allodynia, utilizing von-Frey filaments, were evaluated before and after 8 weeks of intraperitoneal alloxan administration (180 mg/kg)...
December 12, 2017: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/29234683/antioxidant-potential-of-selected-korean-edible-plant-extracts
#8
Yaejin Woo, Hyeji Lee, Yong-Seob Jeong, Ga Young Shin, Ja Gyeong Oh, Jong-Sang Kim, Jisun Oh
This study aimed to evaluate the antioxidant activity of various plant extracts. A total of 94 kinds of edible plant extracts obtained from the Korea Plant Extract Bank were screened for cytotoxicity, following which the total phenolic content of 24 shortlisted extracts was determined. Of these, extracts from three plants, namely, Castanea crenata (CC) leaf, Camellia japonica (CJ) fruit, and Viburnum dilatatum (VD) leaf, were examined for antioxidant capabilities by measuring radical scavenging activity, ferric reducing/antioxidant power, and lipid peroxidation inhibitory activity...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29234464/production-of-isoprene-one-of-the-high-density-fuel-precursors-from-peanut-hull-using-the-high-efficient-lignin-removal-pretreatment-method
#9
Sumeng Wang, Zhaobao Wang, Yongchao Wang, Qingjuan Nie, Xiaohua Yi, Wei Ge, Jianming Yang, Mo Xian
Background: Isoprene as the feedstock can be used to produce renewable energy fuels, providing an alternative to replace the rapidly depleting fossil fuels. However, traditional method for isoprene production could not meet the demands for low-energy consumption and environment-friendliness. Moreover, most of the previous studies focused on biofuel production out of lignocellulosic materials such as wood, rice straw, corn cob, while few studies concentrated on biofuel production using peanut hull (PH)...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/29234381/antihyperglycemic-antidiabetic-and-antioxidant-effects-of-garcinia-pedunculata-in-rats
#10
Md Yousuf Ali, Sudip Paul, E M Tanvir, Md Sakib Hossen, Nur-E Noushin Rumpa, Moumoni Saha, Nikhil Chandra Bhoumik, Md Aminul Islam, Md Sabir Hossain, Nadia Alam, Siew Hua Gan, Md Ibrahim Khalil
The antihyperglycemic, antidiabetic, and antioxidant potentials of the methanolic extract of Garcinia pedunculata (GP) fruit in rats were investigated. The acute antihyperglycemic effect of different doses of GP was studied in normal male Wistar rats. Diabetes was induced by streptozotocin (STZ) injection in another cohort of male Wistar rats and they showed significantly higher blood glucose and glycated hemoglobin (HbA1c) levels, altered lipid profiles, and lower insulin levels compared to nondiabetic control animals...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/29234338/transcript-profiling-identifies-gene-cohorts-controlled-by-each-signal-regulating-trans-differentiation-of-epidermal-cells-of-vicia-faba-cotyledons-to-a-transfer-cell-phenotype
#11
Hui-Ming Zhang, Simon L Wheeler, Xue Xia, Kim Colyvas, Christina E Offler, John W Patrick
Transfer cells (TCs) support high rates of membrane transport of nutrients conferred by a plasma membrane area amplified by lining a wall labyrinth comprised of an uniform wall layer (UWL) upon which intricate wall ingrowth (WI) papillae are deposited. A signal cascade of auxin, ethylene, extracellular hydrogen peroxide (H2O2) and cytosolic Ca2+ regulates wall labyrinth assembly. To identify gene cohorts regulated by each signal, a RNA- sequencing study was undertaken using Vicia faba cotyledons. When cotyledons are placed in culture, their adaxial epidermal cells spontaneously undergo trans-differentiation to epidermal TCs (ETCs)...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29234005/proteomic-analyses-identify-arh3-as-a-serine-mono-adp-ribosylhydrolase
#12
Jeannette Abplanalp, Mario Leutert, Emilie Frugier, Kathrin Nowak, Roxane Feurer, Jiro Kato, Hans V A Kistemaker, Dmitri V Filippov, Joel Moss, Amedeo Caflisch, Michael O Hottiger
ADP-ribosylation is a posttranslational modification that exists in monomeric and polymeric forms. Whereas the writers (e.g. ARTD1/PARP1) and erasers (e.g. PARG, ARH3) of poly-ADP-ribosylation (PARylation) are relatively well described, the enzymes involved in mono-ADP-ribosylation (MARylation) have been less well investigated. While erasers for the MARylation of glutamate/aspartate and arginine have been identified, the respective enzymes with specificity for serine were missing. Here we report that, in vitro, ARH3 specifically binds and demodifies proteins and peptides that are MARylated...
December 12, 2017: Nature Communications
https://www.readbyqxmd.com/read/29233855/the-plastid-lipocalin-lcnp-is-required-for-sustained-photoprotective-energy-dissipation-in-arabidopsis
#13
Alizée Malnoë, Alex Schultink, Sanya Shahrasbi, Dominique Rumeau, Michel Havaux, Krishna K Niyogi
Light utilization is finely tuned in photosynthetic organisms to prevent cellular damage. The dissipation of excess absorbed light energy, a process termed NPQ, plays an important role in photoprotection. Little is known about the sustained or slowly reversible form(s) of NPQ and whether they are photoprotective, in part due to the lack of mutants. The Arabidopsis thaliana suppressor of quenching1 (soq1) mutant exhibits enhanced sustained NPQ, which we term qH. To identify molecular players involved in qH, we screened for suppressors of soq1 and isolated mutants affecting either chlorophyllide a oxygenase (CAO) or the chloroplastic lipocalin (CHL), now renamed plastid lipocalin (LCNP)...
December 12, 2017: Plant Cell
https://www.readbyqxmd.com/read/29233736/fumonisin-b1-induces-oxidative-stress-in-oesophageal-sno-cancer-cells
#14
René B Khan, Alisa Phulukdaree, Anil A Chuturgoon
Fumonisin B1 (FB1) is a ubiquitous contaminant of maize that is epidemiologically linked to oesophageal cancer (OC) in South Africa. FB1-induced oxidative stress mediates toxicity in animals and human cell lines, but the effects relating to OC are limited. Given the species-specific effects of FB1, this study investigated FB1-mediated toxicity and oxidative stress in spindle-shaped N-cadherin (+) CD45 (-) osteoblastic (SNO) cells. Following exposure to FB1 (0-20 μM) for 48 h, mitochondrial membrane potential and intracellular reactive oxygen species (iROS) were measured (flow cytometry)...
December 9, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/29233257/investigation-using-whole-genome-sequencing-of-a-prolonged-restaurant-outbreak-of-salmonella-typhimurium-linked-to-the-building-drainage-system-england-february-2015-to-march-2016
#15
John Mair-Jenkins, Roberta Borges-Stewart, Caroline Harbour, Judith Cox-Rogers, Tim Dallman, Philip Ashton, Robert Johnston, Deborah Modha, Philip Monk, Richard Puleston
Following notification of a Salmonella enterica serovar Typhimurium gastroenteritis outbreak, we identified 82 cases linked to a restaurant with symptom onset from 12 February 2015 to 8 March 2016. Seventy-two cases had an isolate matching the nationally unique whole genome sequencing profile (single nucleotide polymorphism (SNP) address: 1.1.1.124.395.395). Interviews established exposure to the restaurant and subsequent case-control analysis identified an association with eating carvery buffet food (adjusted odds ratios (AOR): 20...
December 2017: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/29233142/role-of-disturbed-fatty-acids-metabolism-in-the-pathophysiology-of-diabetic-erectile-dysfunction
#16
Mohamed Raâfet Ben Khedher, Houda Bouhajja, Samia Haj Ahmed, Mohamed Abid, Kamel Jamoussi, Mohamed Hammami
BACKGROUND: Vasculogenic erectile dysfunction (VED) is considered as a common complication among people with type 2 diabetes (T2D). We tested whether changes in fatty acid (FAs) classes measured in erythrocytes are associated with increased risk of diabetic VED along with related risk factors. METHODS: We assessed erythrocyte FAs composition, lipid peroxidation parameters and inflammatory cytokines among 72 T2D men with VED, 78 T2D men without VED and 88 healthy volunteers with similar age...
December 12, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/29233029/molecular-hepatoprotective-effects-of-lipoic-acid-against-carbon-tetrachloride-induced-liver-fibrosis-in-rats-hepatoprotection-at-molecular-level
#17
K M Sadek, E A Saleh, S M Nasr
BACKGROUND: Liver fibrosis is a noteworthy well-being issue that can prompt the progression of liver cirrhosis and hepatocellular carcinoma. Prominently, many antioxidants have been shown to have defensive impacts against liver fibrosis. AIM: Subsequently, in the present study, the viability of alpha-lipoic acid (α-LA) in ensuring against carbon tetrachloride (CCl4)-actuated liver fibrosis and the mechanism(s) involved in this defensive impact were considered in rats...
January 1, 2017: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/29233028/therapeutic-effects-of-oral-liothyronine-on-aluminum-phosphide-poisoning-as-an-adjuvant-therapy-a-clinical-trial
#18
M H Goharbari, F Taghaddosinejad, M Arefi, M Sharifzadeh, M Mojtahedzadeh, S Nikfar, M Baeeri, M Rahimifard, M Abdollahi
BACKGROUND: In aluminum phosphide (AlP) poisoning, death is mainly due to cardiovascular failure and refractory acute heart failure. There is a lot of evidence showing thyroid hormones have cardioprotective effects. OBJECTIVE: The purpose of this study was to evaluate the effect of oral liothyronine in the treatment of AlP poisoning. METHODS: Twenty-four patients from intensive care unit of Baharloo Hospital, Tehran, Iran, were included based on the inclusion and exclusion criteria...
January 1, 2017: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/29232973/chemical-constituents-from-the-fruiting-bodies-of-phellinus-igniarius
#19
Nguyen Tan Thanh, Nguyen Ngoc Tuan, Ping-Chung Kuo, Doan Manh Dung, Doan Lan Phuong, Dinh Thi Truong Giang, Tian-Shung Wu, Tran Dinh Thang
A new tirucallane-type triterpenoid igniarine (1), and four known compounds meshimakobnol A (2), meshimakobnol B (3), ergosterol (4) and ergosterol peroxide (5), were purified from the methanol extracts of the fruiting bodies of Phellinus igniarius (DC. ex Fr.) Quél. The structure of 1 was elucidated using a combination of 1D and 2D NMR techniques and HR-ESI-MS analyses. In addition, the isolated compounds were examined for their cytotoxicity against several tumour cell lines and part of the tested compounds demonstrated weak cytotoxicity...
December 13, 2017: Natural Product Research
https://www.readbyqxmd.com/read/29232641/effect-of-thiacloprid-on-early-life-stages-of-common-carp-cyprinus-carpio
#20
Josef Velisek, Alzbeta Stara
Toxicity of the neonicotinoid pesticide thiacloprid to embryos and larvae of common carp Cyprinus carpio was assessed under laboratory conditions. Carp embryos and larvae were exposed to thiacloprid at four concentrations: 4.5 (environmental concentration), 45, 225, and 450 μg/L for 35 days and compared to a non-treated control group. The effects on lipid peroxidation, antioxidant enzyme levels (superoxide dismutase, glutathione reductase, catalase, glutathione S-transferase, and reduced glutathione), mortality, growth, development, and histopathogenesis were assessed...
December 1, 2017: Chemosphere
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