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Yassine Chtourou et al.
Environmental toxicology, 29(10), 1147-1154 (2013-01-23)
Metal toxicity may occur after exposure from many sources. Oxidative stress is thought to be involved in manganese-induced toxicity and leads to various health disorders. Silymarin (SIL), a natural flavonoid, has been reported to have many benefits and medicinal properties....
Qi Ye et al.
Environmental toxicology and pharmacology, 40(1), 333-341 (2015-07-21)
Manganese in excess promotes unstable emotional behavior. Our previous study showed that olfactory manganese uptake into the brain is altered in Hfe(-/-) mice, a model of iron overload hemochromatosis, suggesting that Hfe deficiency could modify the neurotoxicity of airborne manganese....
Tao Guo et al.
Scientific reports, 5, 8016-8016 (2015-01-27)
Bone homeostasis is maintained by the balance of osteoblasts (OBs) and osteoclasts (OCs). Increased activity of OCs not only contributes to pathological bone resorption, such as osteoporosis and periodontitis, but also is responsible for physiological conditions like orthodontic tooth movement...
Priyanka Singh et al.
Antonie van Leeuwenhoek, 108(3), 711-720 (2015-07-15)
The type strain DCY99(T) was isolated from soil collected from a ginseng field in Hwacheon, Republic of Korea. Strain DCY99(T) is Gram-negative, non-spore forming, motile, rod-shaped, and strictly aerobic. The bacteria grow optimally at 25-30 °C and pH 6.0-6.5. Phylogenetically...
Syed Moshfiqur Rahman et al.
Reproductive toxicology (Elmsford, N.Y.), 53, 68-74 (2015-04-02)
The essential element manganese (Mn) might be toxic at excess exposure. We assessed the impact of elevated Mn exposure through drinking water during pregnancy on birth size in a population-based cohort(n = 1695) in rural Bangladesh. Concentrations of water Mn...
Johny Nicolas et al.
Environmental science. Processes & impacts, 17(11), 1952-1958 (2015-09-26)
The wide application and production of nanotechnology have increased the interest in studying the toxicity of nano- and micro-sized particles escaping into air from various aspects of the production process. Metal oxides (MOs) are one particular class of particles that...
Robert E Brennan et al.
BMC microbiology, 15, 99-99 (2015-05-13)
Periplasmically localized copper-zinc co-factored superoxide dismutase (SodC) enzymes have been identified in a wide range of Gram-negative bacteria and are proposed to protect bacteria from exogenously produced toxic oxygen radicals, which indicates the potential significance of a Coxiella burnetii SodC....
Jason M Sobota et al.
Journal of bacteriology, 196(11), 1980-1991 (2014-03-25)
In Escherichia coli, aromatic compound biosynthesis is the process that has shown the greatest sensitivity to hydrogen peroxide stress. This pathway has long been recognized to be sensitive to superoxide as well, but the molecular target was unknown. Feeding experiments...
Y Chen et al.
Free radical research, 49(10), 1275-1284 (2015-06-30)
Mitochondrial oxidative damage is hypothesized to contribute to the pathogenesis of chronic cholestatic liver diseases. Melatonin, an indolamine synthesized in the pineal gland, shows a wide range of physiological functions, and is under clinical investigation for expanded applications. Melatonin has...
Majid Motaghinejad et al.
Fundamental & clinical pharmacology, 29(3), 299-309 (2015-04-08)
Chronic consumption of morphine induces physical dependency, anxiety, and neurodegeneration. In this study, morphine on its own has been used for the management of morphine-induced dependency, oxidative stress, and apoptosis. Forty-eight male rats were randomly divided into six groups. Rats...
Tiebing Liu et al.
PloS one, 10(7), e0133622-e0133622 (2015-07-18)
The etiology and pathophysiology of schizophrenia remain obscure. This study explored the associations between schizophrenia risk and serum levels of 10 trace elements. A 1:1 matched case-control study was conducted and matched by age and sex. Blood samples were collected...
Lisa M Yates et al.
Chembiochem : a European journal of chemical biology, 16(3), 415-423 (2015-02-03)
Protein pyrophosphorylation is emerging as a new post-translational modification, yet its role in cellular signaling remains poorly characterized. Important factors in determining the biological relevance of pyrophosphorylation include understanding the chemical and biochemical stability of the pyrophosphoryl group and elucidating...
Jingjing Xie et al.
Poultry science, 93(4), 959-969 (2014-04-08)
Manganese is an essential microelement. Manganese deficiency affects reproduction performance and reproductive hormones in layers. However, little is known about its effects and the possible mechanism in regulating reproduction in broiler breeder hens. In the current study, broiler breeder hens...
Aldo Nicosia et al.
BioMed research international, 2015, 437328-437328 (2015-02-24)
Due to anthropogenic activities the relative concentrations of cadmium and manganese have increased in the marine environment. Cephalopods are able to accumulate such metals and, as inhabitant of coastal waters, Octopus vulgaris is continuously exposed to anthropogenic activities. Since no...
Masakazu Nakamura et al.
Clinica chimica acta; international journal of clinical chemistry, 439, 185-190 (2014-12-03)
Accurate high-density lipoprotein cholesterol (HDL-C) measurements are important for management of cardiovascular diseases. The US Centers for Disease Control and Prevention (CDC) and Cholesterol Reference Method Laboratory Network (CRMLN) perform ultracentrifugation (UC) reference measurement procedure (RMP) to value assign HDL-C....
Christian Nyrop Albers et al.
Water research, 83, 61-70 (2015-07-01)
Groundwater is an important drinking water resource. Yet, this resource is threatened by pollution from chemicals, such as pesticides and their degradation products. To investigate the potential for remediation of groundwater polluted by trace concentrations of the pesticide residue 2,6-dichlorobenzamide...
Ebany J Martinez-Finley et al.
Free radical biology & medicine, 62, 65-75 (2013-02-12)
Manganese (Mn) is an essential dietary nutrient, but an excess or accumulation can be toxic. Disease states, such as manganism, are associated with overexposure or accumulation of Mn and are due to the production of reactive oxygen species, free radicals...
Xiang Sheng et al.
Biochemistry, 53(27), 4455-4466 (2014-06-26)
Pyruvate carboxylase (PC) catalyzes the carboxylation of pyruvate to produce oxaloacetate. Its activity is directly related to insulin release and thus PC has recently attracted great interest as a potential target for diabetes treatment. In this article, the catalytic mechanism...
Nicholas Cox et al.
Science (New York, N.Y.), 345(6198), 804-808 (2014-08-16)
The photosynthetic protein complex photosystem II oxidizes water to molecular oxygen at an embedded tetramanganese-calcium cluster. Resolving the geometric and electronic structure of this cluster in its highest metastable catalytic state (designated S3) is a prerequisite for understanding the mechanism...
Julia E Martin et al.
PLoS genetics, 11(3), e1004977-e1004977 (2015-03-17)
Escherichia coli does not routinely import manganese, but it will do so when iron is unavailable, so that manganese can substitute for iron as an enzyme cofactor. When intracellular manganese levels are low, the cell induces the MntH manganese importer...
Michael Challenor et al.
Biochimie, 112, 160-171 (2015-03-21)
Glutamate excitotoxicity contributes to damage following injury to the central nervous system via mechanisms including changes in the expression of receptors, calcium overload, oxidative stress and cell death. Excitotoxicity is triggered by glutamate binding to receptors, including calcium permeable AMPA...
Mirna Lechpammer et al.
Annals of neurology, 75(4), 608-612 (2014-03-07)
We followed a patient with manganese transporter deficiency due to homozygous SLC30A10 mutations from age 14 years until his death at age 38 years and present the first postmortem findings of this disorder. The basal ganglia showed neuronal loss, rhodanine-positive...
M Sidoryk-Wegrzynowicz et al.
Journal of internal medicine, 273(5), 466-477 (2013-01-31)
Manganese (Mn) is an essential trace element that is required for maintaining proper function and regulation of numerous biochemical and cellular reactions. Despite its essentiality, at excessive levels Mn is toxic to the central nervous system (CNS). Increased accumulation of...
Sang Jun Han et al.
Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association, 30(9), 1497-1506 (2015-07-05)
Progression of acute kidney injury to chronic kidney disease (CKD) is associated with inadequate recovery of damaged kidney. Hydrogen sulfide (H2S) regulates a variety of cellular signals involved in cell death, differentiation and proliferation. This study aimed to identify the...
Marin Tota et al.
Archives of environmental & occupational health, 70(3), 126-132 (2014-06-27)
Environmental impact of natural gas facility near Molve (Podravina, Croatia) was assessed using hares (Lepus europaeus Pallas) as biomonitors. Elevated levels of heavy metals in the environment lead to their accumulation in different tissues of hares. The authors have tested...
N M Tun et al.
Letters in applied microbiology, 60(1), 20-26 (2014-10-07)
HOM6 is a major gene in the aspartate pathway which leads to biosynthesis of threonine and methionine. The phenotypes of the gene deletion mutant (hom6∆) in a variety of cultural conditions have previously provided meaningful insights into the biological roles of...
Anneli Wennman et al.
Archives of biochemistry and biophysics, 555-556, 9-15 (2014-05-27)
Lipoxygenases (LOX) oxidize polyunsaturated fatty acids to hydroperoxides, which are generated by proton coupled electron transfer to the metal center with FeIIIOH- or MnIIIOH-. Hydrogen abstraction by FeIIIOH- of soybean LOX-1 (sLOX-1) is associated with a large deuterium kinetic isotope...
Biljana Macanovic et al.
Disease markers, 2015, 436236-436236 (2015-02-19)
Semen analysis is the cornerstone in the evaluation of male (in)fertility. However, there are men with normal semen tests but with impaired fertilizing ability, as well as fertile men with poor sperm characteristics. Thus, there is rising interest to find...
Laura E Fredenburgh et al.
American journal of physiology. Lung cellular and molecular physiology, 309(8), L834-L846 (2015-09-01)
Inhaled carbon monoxide (CO) gas has therapeutic potential for patients with acute respiratory distress syndrome if a safe, evidence-based dosing strategy and a ventilator-compatible CO delivery system can be developed. In this study, we used a clinically relevant baboon model...
Srinivasan V Narayanan et al.
Stroke, 46(6), 1626-1632 (2015-04-25)
Nuclear erythroid 2 related factor 2 (Nrf2) is an astrocyte-enriched transcription factor that has previously been shown to upregulate cellular antioxidant systems in response to ischemia. Although resveratrol preconditioning (RPC) has emerged as a potential neuroprotective therapy, the involvement of...
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