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https://www.readbyqxmd.com/read/28294377/cumene-hydroperoxide-induced-changes-in-oxidation-reduction-potential-in-fresh-and-frozen-seminal-ejaculates
#1
A Agarwal, R Sharma, R Henkel, S Roychoudhury, S C Sikka, S du Plessis, Y B Sarda, C Speyer, M Nouh, C Douglas, Z Kayali, E S Ahmed, E Sabanegh
Oxidation-reduction potential (ORP) is a newer integrated measure of the balance between total oxidants (reactive oxygen species-ROS) and reductants (antioxidants) that reflects oxidative stress in a biological system. This study measures ORP and evaluates the effect of exogenous induction of oxidative stress by cumene hydroperoxide (CH) on ORP in fresh and frozen semen using the MiOXSYS Analyzer. Semen samples from healthy donors (n = 20) were collected and evaluated for sperm parameters. All samples were then flash-frozen at -80°C...
March 15, 2017: Andrologia
https://www.readbyqxmd.com/read/28285400/how-does-environmental-variation-affect-the-distribution-of-dragonfly-larvae-odonata-in-the-amazon-cerrado-transition-zone-in-central-brazil
#2
T P Mendes, A Luiza-Andrade, H S R Cabette, L Juen
This study investigated the effects of environmental variation on assemblages of dragonfly larvae (Odonata). We hypothesize that there is a significant correlation between species richness, species composition, and abundance of Odonata individuals, and habitat integrity and abiotic variables. To test this hypothesis, we sampled odonate larvae at 12 streams in the Suiá-Miçú River basin in Mato Grosso, Brazil, during three different periods of the year. Local physical and chemical variables (temperature, pH, turbidity, electrical conductivity (EC), dissolved oxygen (DO), total dissolved solids (TDS), and oxidation reduction potential (ORP)) were measured at each site using a multi-parameter probe, and integrity was assessed using the Habitat Integrity Index (HII)...
March 11, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28261160/microbial-character-related-sulfur-cycle-under-dynamic-environmental-factors-based-on-the-microbial-population-analysis-in-sewerage-system
#3
Qian Dong, Hanchang Shi, Yanchen Liu
The undesired sulfur cycle derived by microbial population can ultimately causes the serious problems of sewerage systems. However, the microbial community characters under dynamic environment factors in actual sewerage system is still not enough. This current study aimed to character the distributions and compositions of microbial communities that participate in the sulfur cycle under the dynamic environmental conditions in a local sewerage system. To accomplish this, microbial community compositions were assessed using 454 high-throughput sequencing (16S rDNA) combined with dsrB gene-based denaturing gradient gel electrophoresis...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28260145/effects-of-pyrite-and-sphalerite-on-population-compositions-dynamics-and-copper-extraction-efficiency-in-chalcopyrite-bioleaching-process
#4
Yunhua Xiao, Xueduan Liu, Weiling Dong, Yili Liang, Jiaojiao Niu, Yabing Gu, Liyuan Ma, Xiaodong Hao, Xian Zhang, Zhen Xu, Huaqun Yin
This study used an artificial microbial community with four known moderately thermophilic acidophiles (three bacteria including Acidithiobacillus caldus S1, Sulfobacillus thermosulfidooxidans ST and Leptospirillum ferriphilum YSK, and one archaea, Ferroplasma thermophilum L1) to explore the variation of microbial community structure, composition, dynamics and function (e.g., copper extraction efficiency) in chalcopyrite bioleaching (C) systems with additions of pyrite (CP) or sphalerite (CS). The community compositions and dynamics in the solution and on the ore surface were investigated by real-time quantitative PCR (qPCR)...
March 4, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/28251671/ascorbic-acid-reduces-redox-potential-in-human-spermatozoa-subjected-to-heat-induced-oxidative-stress
#5
G Ahmad, A Agarwal, S C Esteves, R Sharma, M Almasry, A Al-Gonaim, G AlHayaza, N Singh, L Al Kattan, W M Sannaa, E Sabanegh
Oxidation-reduction potential (ORP) is a new measure of oxidative stress. It is a balance between the total available oxidants and reductants. This study measures the efficiency of ascorbic acid (AA) against oxidative stress induced by either heat alone or heat and hydrogen peroxide in sperm suspensions using the MiOXSYS System. Two concentrations of ascorbic acid (400 and 600 μmol/L) were tested against heat- and heat plus hydrogen peroxide-induced oxidative stress in sperm suspensions after 2 and 4 hr of incubation...
March 1, 2017: Andrologia
https://www.readbyqxmd.com/read/28243789/surgical-method-influences-specimen-margins-and-biochemical-recurrence-during-radical-prostatectomy-for-high-risk-prostate-cancer-a-systematic-review-and-meta-analysis
#6
REVIEW
Victor Srougi, Jose Bessa, Mohammed Baghdadi, Igor Nunes-Silva, Jose Batista da Costa, Silvia Garcia-Barreras, Eric Barret, Francois Rozet, Marc Galiano, Rafael Sanchez-Salas, Xavier Cathelineau
PURPOSE: To perform a meta-analysis comparing the rates of positive surgical margins (PSM) and biochemical recurrence (BCR) between open radical prostatectomy (ORP) and robot-assisted radical prostatectomy (RARP) in patients with high-risk prostate cancer. METHODS: A systematic review was performed on Pubmed, Embase and Scopus databases in August 2016, according to the Preferred Reporting Items for Systematic Review and Meta-analysis (PRISMA) statement. References retrieved were evaluated using the Newcastle-Ottawa scale and the Black and Down's tool for quality assessment...
February 27, 2017: World Journal of Urology
https://www.readbyqxmd.com/read/28238148/long-term-cancer-control-outcomes-of-robot-assisted-radical-prostatectomy-for-prostate-cancer-treatment-a-meta-analysis
#7
Lei Wang, Baojun Wang, Qing Ai, Yu Zhang, Xiangjun Lv, Hongzhao Li, Xin Ma, Xu Zhang
PURPOSE: Robot-assisted radical prostatectomy (RARP) provides significant advantages in short-term oncological outcomes for prostate cancer patients. However, data regarding the long-term cancer control outcomes of RARP are limited and inconsistent. This study aimed to evaluate these long-term outcomes. METHODS: Medline, Scopus, and other databases were searched for studies published from January 2010 to July 2016. Case series and prospective cohort studies on the long-term cancer control outcomes of patients who underwent RARP were subjected to meta-analyses by using the R statistical software...
February 25, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28222379/increased-static-and-decreased-capacity-oxidation-reduction-potentials-in-plasma-are-predictive-of-metabolic-syndrome
#8
Gerd Bobe, Tora J Cobb, Scott W Leonard, Savinda Aponso, Christopher B Bahro, Dipankar Koley, Eunice Mah, Richard S Bruno, Maret G Traber
Electric conductivity in plasma is the balance between oxidized and reduced molecules (static Oxidation-Reduction Potential, sORP) and the amount of readily oxidizable molecules (capacity ORP, cORP). Adults with metabolic syndrome (MetS) have increased inflammation, dyslipidemia and oxidative stress; therefore, participants with MetS were hypothesized to have higher plasma sORP and lower cORP than those measures in healthy adults. Heparin-anticoagulated plasma from healthy and age- and gender-matched individuals with MetS (BMI: 22...
February 14, 2017: Redox Biology
https://www.readbyqxmd.com/read/28214572/clinical-relevance-of-oxidation-reduction-potential-in-the-evaluation-of-male-infertility
#9
Ashok Agarwal, Siew May Wang
OBJECTIVE: To evaluate (1) the relationship between oxidation-reduction potential (ORP) and abnormal sperm quality, and (2) the changes in ORP and sperm parameters over time, in search of a potential surrogate marker of poor sperm quality that may assist in the diagnosis of oxidative stress-related male infertility. MATERIALS AND METHODS: A total of 194 infertile men were included and 28 patients were identified to have repeated semen analyses and ORP measurements...
February 15, 2017: Urology
https://www.readbyqxmd.com/read/28214441/enhanced-treatment-of-fischer-tropsch-f-t-wastewater-using-the-up-flow-anaerobic-sludge-blanket-coupled-with-bioelectrochemical-system-effect-of-electric-field
#10
Dexin Wang, Hongjun Han, Yuxing Han, Kun Li, Hao Zhu
The coupling of bioelectrochemical system (BES) with an up-flow anaerobic sludge blanket (UASB) was established for enhanced Fischer-Tropsch (F-T) wastewater treatment while the UASB (control group) was operated in parallel. The presence of electric field could offer system a more reductive micro-environment that lower the ORP values and maintain the appropriate pH range, resulting in the higher chemical oxygen demand (COD) removal efficiency and methane production for BES-UASB (86.8% and 2.31±0.1L/(L·d)) while those values in control group were 72...
February 7, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28212265/variations-in-oxidative-stress-levels-in-3-days-follow-up-in-ultramarathon-mountain-race-athletes
#11
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/28179621/implementation-of-concurrent-electrolytic-generation-of-two-homogeneous-mediators-under-widened-potential-conditions-to-facilitate-removal-of-air-pollutants
#12
Muthuraman Govindan, Alan M Bond, Il-Shik Moon
Electro-scrubbing is being developed as a futuristic technology for the removal of air-pollutants. To date, only one homogeneous mediator for the removal of air pollutants has been generated in each experiment using a divided electrolytic flow cell in an acidic medium. This paper reports the concurrent generation of two homogenous mediators, one at the anodic half-cell containing an acidic solution and the other at the cathodic half-cell containing a basic solution. The concept was inspired by the change in pH that occurs during water electrolysis in a divided cell...
December 2017: Scientific Reports
https://www.readbyqxmd.com/read/28128558/protein-assisted-formation-of-molybdenum-heterometallic-clusters-evidence-for-the-formation-of-s2mos2-m-s2mos2-clusters-with-m-fe-co-ni-cu-or-cd-within-the-orange-protein
#13
Biplab K Maiti, Luisa B Maia, Sofia R Pauleta, Isabel Moura, José J G Moura
The Orange Protein (ORP) is a small bacterial protein, of unknown function, that harbors a unique molybdenum/copper (Mo/Cu) heterometallic cluster, [S2Mo(VI)S2Cu(I)S2Mo(VI)S2](3-), noncovalently bound. The apo-ORP is able to promote the formation and stabilization of this cluster, using Cu(II)- and Mo(VI)S4(2-) salts as starting metallic reagents, to yield a Mo/Cu-ORP that is virtually identical to the native ORP. In this work, we explored the ORP capability of promoting protein-assisted synthesis to prepare novel protein derivatives harboring molybdenum heterometallic clusters containing iron, cobalt, nickel, or cadmium in place of the "central" copper (Mo/Fe-ORP, Mo/Co-ORP, Mo/Ni-ORP, or Mo/Cd-ORP)...
February 20, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28128323/an-oxidoreductase-aioe-is-responsible-for-bacterial-arsenite-oxidation-and-resistance
#14
Qian Wang, Yushan Han, Kaixiang Shi, Xia Fan, Lu Wang, Mingshun Li, Gejiao Wang
Previously, we found that arsenite (As(III)) oxidation could improve the generation of ATP/NADH to support the growth of Agrobacterium tumefaciens GW4. In this study, we found that aioE is induced by As(III) and located in the arsenic island near the As(III) oxidase genes aioBA and co-transcripted with the arsenic resistant genes arsR1-arsC1-arsC2-acr3-1. AioE belongs to TrkA family corresponding the electron transport function with the generation of NADH and H(+). An aioE in-frame deletion strain showed a null As(III) oxidation and a reduced As(III) resistance, while a cytC mutant only reduced As(III) oxidation efficiency...
January 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28126567/physicochemical-conditions-and-properties-of-particles-in-urban-runoff-and-rivers-implications-for-runoff-pollution
#15
Qian Wang, Qionghua Zhang, Yaketon Wu, Xiaochang C Wang
In this study, to gain an improved understanding of the fate and fractionation of particle-bound pollutants, we evaluated the physicochemical conditions and the properties of particles in rainwater, urban runoff, and rivers of Yixing, a city with a large drainage density in the Taihu Lake Basin, China. Road runoff and river samples were collected during the wet and dry seasons in 2015 and 2016. There were significant differences between the physicochemical conditions (pH, oxidation-reduction potential (ORP), and electroconductivity (EC)) of rainwater, runoff, and rivers...
January 16, 2017: Chemosphere
https://www.readbyqxmd.com/read/28096920/the-impact-of-day-of-surgery-on-the-length-of-stay-for-major-urological-procedures
#16
Gregory J Nason, Eabhann M O'Connor, Cathleen O'Neill, Omer Izzeldin, Shane W Considine, M Frank O'Brien
INTRODUCTION: Surgery performed later in the week has been associated with longer length of stay (LOS). The aim of this study was to assess if the day of the surgery impacted the LOS for two major urological procedures in a tertiary referral university teaching hospital. METHODS: A retrospective review was performed of two major urological procedures consecutively performed by a single surgeon in our unit from March 2012 to December 2015. Patient demographics, histopathological characteristics, operative details, and LOS were obtained from the patients' medical records...
November 2016: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/28091787/production-of-water-soluble-yellow-pigments-via-high-glucose-stress-fermentation-of-monascus-ruber-cgmcc-10910
#17
Meihua Wang, Tao Huang, Gong Chen, Zhenqiang Wu
Monascus pigments are secondary metabolites of Monascus species and are mainly composed of yellow pigments, orange pigments and red pigments. In this study, a larger proportion of Monascus yellow pigments could be obtained through the selection of the carbon source. Hydrophilic yellow pigments can be largely produced extracellularly by Monascus ruber CGMCC 10910 under conditions of high glucose fermentation with low oxidoreduction potential (ORP). However, keeping high glucose levels later in the culture causes translation or a reduction of yellow pigment...
January 13, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28075160/can-we-accomplish-better-oncological-results-with-robot-assisted-radical-prostatectomy
#18
Ali Riza Kural, Can Obek, Tünkut Doğanca
Surgical removal with radical prostatectomy has been a cornerstone for the treatment of prostate cancer and is associated with level one evidence for survival advantage compared to watchful waiting. Since the first structured robotic program was launched in 2000, robot-assisted radical prostatectomy (RARP) has had a rapid diffusion and surpassed its open (ORP) and laparoscopic (LRP) counterparts in the United States and is progressively expanding in other countries. Interestingly, this common acceptance of RARP was initially driven in the paucity of robust clinical evidence...
January 11, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28035604/decomplexation-efficiency-and-mechanism-of-cu-ii-edta-by-h2o2-coupled-internal-micro-electrolysis-process
#19
Dongfang Zhou, Yongyou Hu, Qian Guo, Weiguang Yuan, Jiefan Deng, Yapan Dang
Internal micro-electrolysis (IE) coupled with Fenton oxidation (IEF) was a very effective technology for copper (Cu)-ethylenediaminetetraacetic acid (EDTA) wastewater treatment. However, the mechanisms of Cu(2+) removal and EDTA degradation were scarce and lack persuasion in the IEF process. In this paper, the decomplexation and removal efficiency of Cu-EDTA and the corresponding mechanisms during the IEF process were investigated by batch test. An empirical equation and the oxidation reduction potential (ORP) index were proposed to flexibly control IE and the Fenton process, respectively...
December 29, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28006957/the-role-of-robot-assisted-radical-prostatectomy-in-high-risk-prostate-cancer
#20
Victor Srougi, Rafael R Tourinho-Barbosa, Igor Nunes-Silva, Mohammed Baghdadi, Silvia Garcia-Barreras, Gregory Rembeyo, Sophie S Eiffel, Eric Barret, Francois Rozet, Marc Galiano, Rafael Sanchez-Salas, Xavier Cathelineau
Prostate cancer (PCa) is stratified into different risk categories based on the patient's prognosis. High-risk disease was formerly characterized by an increased risk of metastasis and lethality, requiring complex treatments. Surgery was recently highlighted to have a pivotal role for the treatment of such cases, even as monotherapy. In the past, open radical prostatectomy was performed for most patients with high-risk PCa; however, robot-assisted radical prostatectomy (RARP) emerged as a reasonable option because it provided optimal outcomes for low- and intermediate-risk PCa...
March 2017: Journal of Endourology
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