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https://www.readbyqxmd.com/read/28212265/variations-in-oxidative-stress-levels-in-3-days-follow-up-in-ultramarathon-mountain-race-athletes
#1
Ypatios Spanidis, Dimitrios Stagos, Marina Orfanou, Nikolaos Goutzourelas, David Bar-Or, Demetrios Spandidos, Demetrios Kouretas
Spanidis, Y, Stagos, D, Orfanou, M, Goutzourelas, N, Bar-or, D, Spandidos, D, and Kouretas, D. Variations in oxidative stress levels in 3 days follow-up in ultramarathon mountain race athletes. J Strength Cond Res 31(3): 582-594, 2017-The aim of the present study was the monitoring of the redox status of runners participating in a mountain ultramarathon race of 103 km. Blood samples from 12 runners were collected prerace and 24, 48, and 72 hours postrace. The samples were analyzed by using conventional oxidative stress markers, such as protein carbonyls (CARB), thiobarbituric acid reactive substances (TBARS), total antioxidant capacity (TAC) in plasma, as well as glutathione (GSH) levels and catalase (CAT) activity in erythrocytes...
March 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28212027/ferromagnetic-coupling-in-the-heterospin-bis-catecholato-manganese-iv-complex-with-pyridine-substituted-by-nitronyl-nitroxide
#2
Michael P Bubnov, Irina A Teplova, Eugenia A Kopylova, Konstantin A Kozhanov, Artem S Bogomyakov, Marina V Petrova, Vitaly A Morozov, Victor I Ovcharenko, Vladimir K Cherkasov
A new bis(3,6-di-tert-butyl-catecholato)manganese complex with two 4-NIT-Py ligands was synthesized and characterized [4-NIT-Py = pyridine substituted at position 4 with nitronyl-nitroxide radical, 2-(pyridin-4-yl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazole-3-oxide-1-oxyl]. X-ray diffraction indicated an octahedral environment of the manganese atom with a trans arrangement of ligands. Bonds lengths in the inner coordination core of the metal and in the chelate cycles that are representative of the charge distribution between the metal and ligands displayed a Mn(IV)(Cat(2-))2 charge distribution...
February 17, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28211558/anxiety-associated-with-parachute-jumping-as-the-cause-of-blood-red-ox-balance-impairment
#3
Mateusz Kowalczyk, Katarzyna Kozak, Julita Ciećwierz, Monika Sienkiewicz, Marcin Kura, Łukasz Jasiak, Edward Kowalczyk
OBJECTIVES: The aim of the study was to assess the effect of anxiety associated with parachute jumps on selected redox balance parameters in regular soldiers from airborne forces. The study allows estimating whether the paratroopers exposed to high level of mental stress are simultaneously under severe oxidative stress. METHODS: The investigations were carried out on 46 professional soldiers from airborne forces divided into groups depending on the number of performed parachute jumps...
December 23, 2016: Psychiatria Polska
https://www.readbyqxmd.com/read/28211113/distribution-of-mast-cells-in-the-feline-ovary-in-various-phases-of-the-oestrous-cycle
#4
P Hamouzova, P Cizek, R Novotny, A Bartoskova, F Tichy
This study is the first description of the distribution of mast cells in various phases of the oestrous cycle in the ovary of cat. Furthermore, this is the first description in species with an induced ovulation. The aim was to describe the distribution of mast cells and variability of their numbers in the feline ovaries in different phases of the oestrous cycle. The number of mast cells in medulla ovarii was affected by the estradiol and progesterone level in the blood serum because the lowest number was detected in anoestrus when the levels of hormones were basal...
February 17, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28210899/interleukin-6-as-possible-early-marker-of-stress-response-after-femoral-fracture
#5
Goran Pesic, Jovana Jeremic, Tamara Nikolic, Vladimir Zivkovic, Ivan Srejovic, Aleksandra Vranic, Jovana Bradic, Branko Ristic, Aleksandar Matic, Nikola Prodanovic, Vladimir Jakovljevic
Bone fracture healing is a complex process which at best results in full recovery of function and structure of injured bone tissue, but all the mechanisms involved in this process, and their mutual interaction, are not fully understood. Despite advancement of surgical procedures, this type of fractures is still a major public health concern. In the last few decades, a lot of attention is focused on the oxygen-free radicals and inflammatory response markers as important factors of skeletal injury. Thus, the aim of the present study was to follow the changes in redox balance and inflammatory response in elderly patients with femoral fractures during the earliest stages of fracture healing, by measuring the values of the observed markers immediately after fracture, as well as the first, third, and seventh postoperative day...
February 16, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28210488/systematic-distortions-in-vertical-placement-of-features-in-drawings-of-faces-and-houses
#6
Neil R Harrison, Julia Jones, Simon J Davies
A crucial part of accurately drawing portraits is the correct vertical positioning of the eyes. Non-experts typically place the eyes higher on the head than they are actually located; however, the explanation for this remains unclear. In Experiment 1, participants drew faces from memory and directly copied from a photograph, to confirm whether biases in observational drawings were related to biases in memory-based drawings. In Experiment 2, participants drew a cat's face, to test explanations by Carbon and Wirth for the positional bias: the 'view-from-below, the 'head-as-box', and the 'hair-as-hat' explanations...
January 2017: I-Perception
https://www.readbyqxmd.com/read/28210264/high-antioxidant-activity-facilitates-maintenance-of-cell-division-in-leaves-of-drought-tolerant-maize-hybrids
#7
Viktoriya Avramova, Hamada AbdElgawad, Ivanina Vasileva, Alexandra S Petrova, Anna Holek, Joachim Mariën, Han Asard, Gerrit T S Beemster
We studied the impact of drought on growth regulation in leaves of 13 maize varieties with different drought sensitivity and geographic origins (Western Europe, Egypt, South Africa) and the inbred line B73. Combining kinematic analysis of the maize leaf growth zone with biochemical measurements at a high spatial resolution allowed us to examine the correlation between the regulation of the cellular processes cell division and elongation, and the molecular redox-regulation in response to drought. Moreover, we demonstrated differences in the response of the maize lines to mild and severe levels of water deficit...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28209965/high-amplitude-electrical-stimulation-can-reduce-elicited-neuronal-activity-in-visual-prosthesis
#8
Alejandro Barriga-Rivera, Tianruo Guo, Chih-Yu Yang, Amr Al Abed, Socrates Dokos, Nigel H Lovell, John W Morley, Gregg J Suaning
Retinal electrostimulation is promising a successful therapy to restore functional vision. However, a narrow stimulating current range exists between retinal neuron excitation and inhibition which may lead to misperformance of visual prostheses. As the conveyance of representation of complex visual scenes may require neighbouring electrodes to be activated simultaneously, electric field summation may contribute to reach this inhibitory threshold. This study used three approaches to assess the implications of relatively high stimulating conditions in visual prostheses: (1) in vivo, using a suprachoroidal prosthesis implanted in a feline model, (2) in vitro through electrostimulation of murine retinal preparations, and (3) in silico by computing the response of a population of retinal ganglion cells...
February 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28209838/genome-sequence-of-type-strain-fonsecaea-multimorphosa-cbs-980-96-t-a-causal-agent-of-feline-cerebral-phaeohyphomycosis
#9
Aniele C Ribas Leao, Vinicius Almir Weiss, Vania Aparecida Vicente, Flavia Costa, Amanda Bombassaro, Roberto Tadeu Raittz, Maria Berenice R Steffens, Fabio Oliveira Pedrosa, Renata R Gomes, Valter Baura, Helisson Faoro, Michelle Zibetti Tadra Sfeir, Eduardo Balsanelli, Leandro F Moreno, M Javad Najafzadeh, Sybren de Hoog, Emanuel Maltempi Souza
A draft genome sequence of type strain Fonsecaea multimorphosa CBS 980.96(T) was obtained. This species was first isolated from a cat with cerebral phaeohyphomycosis in Queensland, Australia.
February 16, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28209536/maternal-administration-of-melatonin-prevents-spatial-learning-and-memory-deficits-induced-by-developmental-ethanol-and-lead-co-exposure
#10
Elham Soleimani, Iran Goudarzi, Kataneh Abrari, Taghi Lashkarbolouki
Melatonin is a radical scavenger with the ability to remove reactive oxidant species. There is report that co-exposure to lead and ethanol during developmental stages induces learning and memory deficits and oxidative stress. Here, we studied the effect of melatonin, with strong antioxidant properties, on memory deficits induced by lead and ethanol co-exposure and oxidative stress in hippocampus. Pregnant rats in lead and ethanol co-exposure group received lead acetate of 0.2% in distilled drinking water and ethanol (4g/kg) by oral gavages once daily from the 5th day of gestation until weaning...
February 13, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28209406/endocrine-and-physiological-effects-of-linuron-and-s-metolachlor-in-zebrafish-developing-embryos
#11
C Quintaneiro, D Patrício, S C Novais, A M V M Soares, M S Monteiro
Evaluation of the effects of linuron and S-metolachlor on apical, biochemical and transcriptional endpoints in zebrafish (Danio rerio) early life stages was the main purpose of this work. Embryos were exposed for 96h to a range of concentrations of each herbicide to determine lethal and sub-lethal effects on apical (e.g. malformations, hatching) and biochemical parameters (cholinesterase, ChE; catalase, CAT; glutathione S-transferase, GST; lipid peroxidation, LPO and lactate dehydrogenase, LDH). To evaluate endocrine disruption effects, embryos were exposed during 96h to 0...
February 13, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28209111/prolonged-course-of-hepatic-granulomatous-disease-due-to-bartonella-henselae-infection
#12
S De Keukeleire, J Geldof, F De Clerck, S Vandecasteele, M Reynders, M Orlent
Cat-scratch disease (CSD) is an emerging zoonosis caused by Bartonella henselae. The disease is usually self-limiting and typically presents in about 90% of all cases as a subacute regional lymphadenopathy. We present a case report of an unusual CSD presentation, persistent hepatic granulomatous disease due to Bartonella henselae infection despite combination therapy with doxycycline and rifampicin. Furthermore, a review of literature was conducted. (Acta gastroenterol. belg., 2016, 79, 497-499).
September 2016: Acta Gastro-enterologica Belgica
https://www.readbyqxmd.com/read/28209087/the-effect-of-hypericum-perforatum-on-kidney-ischemia-reperfusion-damage
#13
Murat Cakir, Halil Duzova, Işil Baysal, Cemile Ceren Gül, Gülbahar Kuşcu, Fatma Kutluk, Hilal Çakin, Şifanur Şeker, Esranur İlbeği, Seda Uslu, Umut Avci, Samet Demir, Cihan Akinci, Sercan Atli
It has been revealed in recent studies that Hypericum Perforatum (HP) is influential on cancer, inflammatory diseases, bacterial and viral diseases, and has neuroprotective and antioxidant properties. In this study, we investigated the effect of HP, which is known to have antioxidant and anti-inflammatory effects, on kidney I/R damage. Male Sprague-Dawley rats were divided into three groups, and each of the groups had eight rats: The Control Group; the Ischemia/Reperfusion (I/R) Group; and the IR + HP Group which was treated with 50 mg/kg of HP...
November 2017: Renal Failure
https://www.readbyqxmd.com/read/28209042/-determination-of-biomarkers-in-exhaled-breath-condensation-of-acute-exacerbation-of-chronic-obstructive-pulmonary-disease-and-its-clinical-implications
#14
X Q Dong, Q Shen, Y N Yao, J J Chen, G H Lu, J Y Zhou
Objective: To analyse the changes and clinical implication of biomarkers in exhaled breath condensates (EBC) of acute exacerbation of chronic obstructive pulmonary disease (AECOPD) before and after treatment. Methods: 20 patients with AECOPD were enrolled, including 15 males and 5 females. The average age was 71±10, ranging from 50-85. The concentrations of Leukotriene B4 (LTB4) and Interleukin 6 (IL-6) from EBC were assayed by ELISA kit before and after treatment. Serum inflammatory indexes, pulmonary function test and quality of life (CAT) were observed at the same time, the relationship between EBC biomarkers and clinical markers were investigated...
February 12, 2017: Chinese Journal of Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/28208751/oxidative-stress-related-genetic-variants-may-modify-associations-of-phthalate-exposures-with-asthma
#15
I-Jen Wang, Wilfried J J Karmaus
Background: Phthalate exposure may increase the risk of asthma. Little is known about whether oxidative-stress related genes may alter this association. First, this motivated us to investigate whether genetic polymorphisms of the oxidative-stress related genes glutathione S-transferase Mu 1 (GSTM1), glutathione S-transferase pi 1 (GSTP1), superoxide dismutase 2 (SOD2), catalase (CAT), myeloperoxidase (MPO), and EPHX1 in children are associated with phthalate urine concentrations. Second, we addressed the question whether these genes may affect the influence of phthalates on asthma...
February 8, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28208442/geometric-somersaults-of-a-polymer-chain-through-cyclic-twisting-motions
#16
Tomohiro Yanao, Taiko Hino
This study explores the significance of geometric angle shifts, which we call geometric somersaults, arising from cyclic twisting motions of a polymer chain. A five-bead polymer chain serves as a concise and minimal model of a molecular shaft throughout this study. We first show that this polymer chain can change its orientation about its longitudinal axis largely, e.g., 120^{∘}, under conditions of zero total angular momentum by changing the two dihedral angles in a cyclic manner. This phenomenon is an example of the so-called "falling cat" phenomenon, where a falling cat undergoes a geometric somersault by changing its body shape under conditions of zero total angular momentum...
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28208115/effects-of-%C3%AE-cypermethrin-enantiomers-on-the-growth-biochemical-parameters-and-bioaccumulation-in-rana-nigromaculata-tadpoles-of-the-anuran-amphibians
#17
Peng Xu, Ledan Huang
Populations of many amphibian species are declining worldwide in part because of pesticide contamination. As a surface water contaminant, α-cypermethrin may have severe ecological impacts on amphibians. Here, we examined the acute toxicity of α-cypermethrin enantiomers to dark-spotted frog Rana nigromaculata tadpoles at 24, 48, 72 and 96h, finding that the tadpoles were indeed sensitive to α-cypermethrin. The (S)-(1R, 3R)-enantiomer was approximately 29 times more toxic than the (R)-(1S, 3S)-enantiomer at 96h...
February 13, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28207414/anti-aging-effects-of-m2000-%C3%AE-d-mannuronic-acid-as-a-novel-immunosuppressive-drug-on-the-enzymatic-and-non-enzymatic-oxidative-stress-parameters-in-an-experimental-model
#18
Soma Hosseini, Mohammad Abdollahi, Gholamreza Azizi, Mohammad Javad Fattahi, Noshin Rastkari, Farzaneh Tofighi Zavareh, Zahra Aghazadeh, Abbas Mirshafiey
BACKGROUND: The anti-aging property of β-D-mannuronic acid (M2000) as a novel non-steroidal anti-inflammatory and immunosuppressive agent was investigated on several determinants relative to the oxidative stress in an animal model. MATERIALS AND METHODS: Sprague-Dawley rats were used for evaluating the safety and efficacy properties of M2000 on some oxidative stress enzymes, including the following: mitochondrial superoxide dismutase (SOD2), catalase (CAT), glutathione peroxidase (GPX1), glutathione S-transferase (GST), myeloperoxidase (MPO), and inducible nitric oxide synthase (iNOS) gene expression by real-time PCR...
February 16, 2017: Journal of Basic and Clinical Physiology and Pharmacology
https://www.readbyqxmd.com/read/28207298/hepatozoon-spp-infects-free-ranging-jaguars-panthera-onca-in-brazil
#19
Mariana Malzoni Furtado, Betina Metzger, Anah Tereza Almeida Jácomo, Marcelo Bahia Labruna, Thiago Fernandes Martins, Lucia Helena O'Dwyer, Karinados Santos Paduan, Grasiela Edith Oliveira Porfírio, Leandro Silveira, Rahel Sollmann, Sueli Akemi Taniwaki, Natália Mundim Tôrres, JoséSoares Ferreira Neto
This study investigated the presence of Hepatozoon spp. in jaguars (Panthera onca) and domestic animals in the Cerrado, Amazon and Pantanal biomes of Brazil. Between February 2000 and January 2010, blood samples were collected from 30 jaguars, 129 domestic dogs (Canis lupus familiaris) and 22 domestic cats (Felis catus) for molecular tests. All of the jaguars from the Pantanal (n=22) and Cerrado (n=4) and 3 of 4 jaguars from the Amazon were positive for Hepatozoon spp. Domestic dogs (62.8%) and cats (31.8%) were also positive for the agent...
February 16, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28206880/determination-of-zn-in-dry-feeds-for-cats-and-dogs-by-energy-dispersive-x-ray-fluorescence-spectrometry
#20
Dayara Virgnía L Ávila, Sidnei O Souza, Silvânio Silvério L Costa, Rennan Geovanny O Araujo, Carlos Alexandre B Garcia, José do Patrocínio H Alves, Elisangela A Passos
This work describes an analytical method for Zn determination in dry feeds for cats and dogs by energy-dispersive X-ray fluorescence (EDXRF). Samples of dry feed were powdered and prepared in the form of pellets for direct analysis by EDXRF. The LOQ (10σ) was 0.4 mg/kg. The samples were also analyzed by inductively coupled plasma-optical emission spectrometry (ICP-OES) as an independent comparative method. Application of a paired t-test showed no significant differences between Zn concentrations obtained by EDXRF and ICP-OES (at a 95% confidence level)...
November 1, 2016: Journal of AOAC International
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