keyword
MENU ▼
Read by QxMD icon Read
search

EET

keyword
https://www.readbyqxmd.com/read/28808031/changes-in-aggregation-states-of-light-harvesting-complexes-as-a-mechanism-for-modulating-energy-transfer-in-desert-crust-cyanobacteria
#1
Leeat Bar Eyal, Reza Ranjbar Choubeh, Eyal Cohen, Ido Eisenberg, Carmen Tamburu, Márta Dorogi, Renata Ünnep, Marie-Sousai Appavou, Reinat Nevo, Uri Raviv, Ziv Reich, Győző Garab, Herbert van Amerongen, Yossi Paltiel, Nir Keren
In this paper we propose an energy dissipation mechanism that is completely reliant on changes in the aggregation state of the phycobilisome light-harvesting antenna components. All photosynthetic organisms regulate the efficiency of excitation energy transfer (EET) to fit light energy supply to biochemical demands. Not many do this to the extent required of desert crust cyanobacteria. Following predawn dew deposition, they harvest light energy with maximum efficiency until desiccating in the early morning hours...
August 14, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28805347/bioelectricity-electromicrobiology-and-sustainability
#2
Kenneth H Nealson
Electromicrobiology is the domain of those prokaryotes able to interact with charged electrodes, using them as electron donors and/or electron acceptors. This is performed via a process called extracellular electron transport, in which outer membrane cytochromes are used to oxidize and/or reduce otherwise unavailable insoluble electron acceptors. EET-capable bacteria can thus be used for a variety of purposes, ranging from small power sources, water reclamation, to pollution remediation and electrosynthesis...
August 14, 2017: Microbial Biotechnology
https://www.readbyqxmd.com/read/28800557/predicting-and-experimental-evaluating-bio-electrochemical-synthesis-a-case-study-with-clostridium-kluyveri
#3
Christin Koch, Anne Kuchenbuch, Frauke Kracke, Paul V Bernhardt, Jens Krömer, Falk Harnisch
Microbial electrosynthesis is a highly promising application of microbial electrochemical technologies for the sustainable production of organic compounds. At the same time a multitude of questions need to be answered and challenges to be met. Central for its further development is using appropriate electroactive microorganisms and their efficient extracellular electron transfer (EET) as well as wiring of the metabolism to EET. Among others, Clostridia are believed to represent electroactive microbes being highly promising for microbial electrosynthesis...
July 25, 2017: Bioelectrochemistry
https://www.readbyqxmd.com/read/28798305/revealing-extracellular-electron-transfer-mediated-parasitism-energetic-considerations
#4
Roman Moscoviz, Clément Flayac, Elie Desmond-Le Quéméner, Eric Trably, Nicolas Bernet
Extracellular electron transfer (EET) is a mechanism that allows energetic coupling between two microorganisms or between a microorganism and an electrode surface. EET is either supported by direct physical contacts or mediated by electron shuttles. So far, studies dealing with interspecies EET (so-called IET) have mainly focused on possible syntrophic interactions between microorganisms favoured by this mechanism. In this article, the case of fermentative bacteria receiving extracellular electrons while fermenting a substrate is considered...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28776163/characteristics-of-meningitis-following-transsphenoidal-endoscopic-surgery-a-case-series-and-a-systematic-literature-review
#5
Pasquale Pagliano, Chiara Caggiano, Tiziana Ascione, Domenico Solari, Giusy Di Flumeri, Luigi Maria Cavallo, Fabio Tortora, Paolo Cappabianca
BACKGROUND: Meningitis occurs in 0.8-1.5% of patients undergoing neurosurgery. The aim of the study was to evaluate the characteristics of meningitis after endoscopic endonasal transsphenoidal surgery (EETS) comparing the findings retrieved to those highlighted by literature search. MATERIALS AND METHODS: Patients treated by EETS during an 18-year period in the Department of Neurosurgery of 'Federico II' University of Naples were evaluated and included in the study if they fulfilled criteria for meningitis...
August 3, 2017: Infection
https://www.readbyqxmd.com/read/28767146/a-randomised-trial-of-effects-of-alcohol-on-cytochrome-p450-eicosanoids-mediators-of-inflammation-resolution-and-blood-pressure-in-men
#6
Anne E Barden, Venus Chavez, Michael Phillips, Emilie Mas, Lawrence J Beilin, Kevin D Croft, Trevor A Mori, Ian B Puddey
BACKGROUND: Cardiovascular effects of alcohol consumption may be influenced by both pro- and anti-inflammatory mechanisms. We previously showed that chronic alcohol consumption increased blood pressure (BP), oxidative stress and 20-hydroxyeicosatetraenoic acid (20-HETE), a vasoconstrictor and pro-inflammatory eicosanoid synthesised by CYP450 enzymes from arachidonic acid. This study in men examined the effect of consuming red wine (RW) on BP in relation to changes in 20-HETE, oxidative stress (F2 -isoprostanes), markers of inflammation, anti-inflammatory CYP450 epoxyeicosatrienoic acids (EETs) and specialised pro-resolving mediators of inflammation (SPMs) derived from eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA)...
August 2, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28761179/soluble-epoxide-hydrolase-inhibition-protected-against-angiotensin-ii-induced-adventitial-remodeling
#7
Chi Zhou, Jin Huang, Qing Li, Jiali Nie, Xizhen Xu, Dao Wen Wang
Epoxyeicosatrienoic acids (EETs), the metabolites of cytochrome P450 epoxygenases derived from arachidonic acid, exert important biological activities in maintaining cardiovascular homeostasis. Soluble epoxide hydrolase (sEH) hydrolyzes EETs to less biologically active dihydroxyeicosatrienoic acids. However, the effects of sEH inhibition on adventitial remodeling remain inconclusive. In this study, the adventitial remodeling model was established by continuous Ang II infusion for 2 weeks in C57BL/6 J mice, before which sEH inhibitor 1-trifluoromethoxyphenyl-3-(1-propionylpiperidin-4-yl) urea (TPPU) was administered by gavage...
July 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28759479/bipolar-disorder-and-early-emotional-trauma-a-critical-literature-review-on-indicators-of-prevalence-rates-and-clinical-outcomes
#8
Aline Limiéri Dualibe, Flávia L Osório
OBJECTIVES: We performed a systematic literature review to (1) evaluate the prevalence rates of early emotional trauma (EET) in patients with bipolar disorder (BD) and the impact of these traumas on the development of the disorder, and (2) integrate the findings of our review with those previously reported by Fisher and Hosang, Daruy-Filho and colleagues, and Maniglio. METHODS: The literature search was performed on PubMed, SciELO, and PsycINFO databases using the keywords bipolar disorder, early trauma, physical abuse, emotional abuse, sexual abuse, maltreatment, adversity, and neglect...
July 29, 2017: Harvard Review of Psychiatry
https://www.readbyqxmd.com/read/28756208/activation-of-aldh1a1-in-mda-mb-468-breast-cancer-cells-that-over-express-cyp2j2-protects-against-paclitaxel-dependent-cell-death-mediated-by-reactive-oxygen-species
#9
Sarah E Allison, Yongjuan Chen, Nenad Petrovic, Jian Zhang, Kirsi Bourget, Peter I Mackenzie, Michael Murray
Cytochrome P450 2J2 (CYP2J2) expression is elevated in breast and other tumours, and is known to be protective against cytotoxic agents that may be used in cancer chemotherapy. This study evaluated the mechanisms by which MDA-MB-468 breast cancer cells that stably expressed CYP2J2 (MDA-2J2 cells) were protected against killing by the anti-cancer agent paclitaxel. Compared to control cells caspase-3/7 activation by paclitaxel was lower in MDA-2J2 cells, while cell proliferation and colony formation following paclitaxel treatment were increased...
July 27, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28755150/picosecond-excitation-energy-transfer-of-allophycocyanin-studied-in-solution-and-in-crystals
#10
Reza Ranjbar Choubeh, Ravi R Sonani, Datta Madamwar, Paul C Struik, Arjen N Bader, Bruno Robert, Herbert van Amerongen
Cyanobacteria perform photosynthesis with the use of large light-harvesting antennae called phycobilisomes (PBSs). These hemispherical PBSs contain hundreds of open-chain tetrapyrrole chromophores bound to different peptides, providing an arrangement in which excitation energy is funnelled towards the PBS core from where it can be transferred to photosystem I and/or photosystem II. In the PBS core, many allophycocyanin (APC) trimers are present, red-light-absorbing phycobiliproteins that covalently bind phycocyanobilin (PCB) chromophores...
July 28, 2017: Photosynthesis Research
https://www.readbyqxmd.com/read/28755129/acid-gastric-antisecretory-effect-of-the-ethanolic-extract-from-arctium-lappa-l-root-role-of-h-k-atpase-ca-2-influx-and-the-cholinergic-pathway
#11
Luisa Mota da Silva, Ligia de Moura Burci, Sandra Crestani, Priscila de Souza, Rita de Cássia Melo Vilhena de Andrade Fonseca da Silva, Nessana Dartora, Lauro Mera de Souza, Thales Ricardo Cipriani, José Eduardo da Silva-Santos, Eunice André, Maria Fernanda de Paula Werner
BACKGROUND: Arctium lappa L., popularly known as burdock, is a medicinal plant used worldwide. The antiulcer and gastric-acid antisecretory effects of ethanolic extract from roots of Arctium lappa (EET) were already demonstrated. However, the mechanism by which the extract reduces the gastric acid secretion remains unclear. Therefore, this study was designed to evaluate the antisecretory mode of action of EET. MATERIALS AND METHODS: The effects of EET on H(+), K(+)-ATPase activity were verified in vitro, whereas the effects of the extract on cholinergic-, histaminergic- or gastrinergic-acid gastric stimulation were assessed in vivo on stimulated pylorus ligated rats...
July 28, 2017: Inflammopharmacology
https://www.readbyqxmd.com/read/28748977/solvent-dependent-photo-induced-dynamics-in-a-non-rigidly-linked-zinc-phthalocyanine-perylenediimide-dyad-probed-using-ultrafast-spectroscopy
#12
Bryan Kudisch, Margherita Maiuri, Vicente M Blas-Ferrando, Javier Ortiz, Ángela Sastre-Santos, Gregory D Scholes
In this work, we characterize the energy and electron transfer kinetics of a zinc phthalocyanine-perylenediimide dyad (ZnPc-PDI) in various solvents using steady-state and tunable narrowband pump-probe spectroscopy. We fit the ultrafast data with global analysis techniques and find that upon excitation of the PDI moiety (pump pulse at 540 nm), the excitation energy transfer (EET) rate to the ZnPc moiety displays a solvent sensitivity that we attribute to changes in the relative equilibrium moiety orientation...
August 9, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28748358/extracellular-electron-transfer-in-acetogenic-bacteria-and-its-application-for-conversion-of-carbon-dioxide-into-organic-compounds
#13
REVIEW
Kensuke Igarashi, Souichiro Kato
Acetogenic bacteria (i.e., acetogens) produce acetate from CO2 during anaerobic chemoautotrophic growth. Because acetogens fix CO2 with high energy efficiency, they have been investigated as biocatalysts of CO2 conversion into valuable chemicals. Recent studies revealed that some acetogens are capable of extracellular electron transfer (EET), which enables electron exchange between microbial cells and extracellular solid materials. Thus, acetogens are promising candidates as biocatalysts in recently developed bioelectrochemical technologies, including microbial electrosynthesis (MES), in which useful chemicals are biologically produced from CO2 using electricity as the energy source...
July 26, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28741242/the-weakening-effect-of-soluble-epoxide-hydrolase-inhibitor-auda-on-febrile-response-to-lipopolysaccharide-and-turpentine-in-rat
#14
Jakub Piotrowski, Tomasz Jędrzejewski, Małgorzata Pawlikowska, Agata Joanna Pacuła, Jacek Ścianowski, Wiesław Kozak
A still growing body of evidence suggests the importance of epoxyeicosatrienoic acids (EETs) in the regulation of inflammatory response; therefore, drugs that stabilize their levels by targeting the soluble epoxide hydrolase (sEH), an enzyme responsible for their metabolism, are currently under investigation. The effect of sEH inhibitors on molecular components of fever mechanism, i.e., on synthesis of pro-inflammatory cytokines or prostaglandins, has been repeatedly proven; however, the hypothesis that sEH inhibitors affect febrile response has never been tested...
July 24, 2017: Journal of Physiology and Biochemistry
https://www.readbyqxmd.com/read/28734877/enzymatic-and-free-radical-formation-of-cis-and-trans-epoxyeicosatrienoic-acids-in-vitro-and-in-vivo
#15
Theresa Aliwarga, Brianne S Raccor, Rozenn N Lemaitre, Nona Sotoodehnia, Sina A Gharib, Libin Xu, Rheem A Totah
Epoxyeicosatrienoic acids (EETs) are metabolites of arachidonic acid (AA) oxidation that have important cardioprotective and signaling properties. AA is an ω-6 polyunsaturated fatty acid (PUFA) that is prone to autoxidation. Although hydroperoxides and isoprostanes are major autoxidation products of AA, EETs are also formed from the largely overlooked peroxyl radical addition mechanism. While autoxidation yields both cis- and trans-EETs, cytochrome P450 (CYP) epoxygenases have been shown to exclusively catalyze the formation of all regioisomer cis-EETs, on each of the double bonds...
July 19, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28722769/promoter-iv-bdnf-deficiency-disturbs-cholinergic-gene-expression-of-chrna5-chrm2-and-chrm5-effects-of-drug-and-environmental-treatments
#16
Kazuko Sakata, Abigail E Overacre
Brain-derived neurotrophic factor (BDNF) promotes maturation of cholinergic neurons. However, how activity-dependent BDNF expression affects specific cholinergic gene expression remains unclear. This study addressed this question by determining mRNA levels of 22 acetylcholine receptor subunits, the choline transporter (CHT), and the choline acetyltransferase (ChAT) in mice deficient in activity-dependent BDNF via promoter IV (KIV) and control wild-type mice. Quantitative RT-PCR revealed significant reductions in nicotinic acetylcholine receptor alpha 5 (CHRNA5) in the frontal cortex and hippocampus and M5 muscarinic acetylcholine receptor (CHRM5) in the hippocampus, but significant increases in M2 muscarinic acetylcholine receptor (CHRM2) in the frontal cortex of KIV mice compared to wild-type mice...
July 19, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28713267/epoxyeicosatrienoic-acid-analog-decreases-renal-fibrosis-by-reducing-epithelial-to-mesenchymal-transition
#17
Melissa Skibba, Md Abdul Hye Khan, Lauren L Kolb, Michael M Yeboah, John R Falck, Radhika Amaradhi, John D Imig
Renal fibrosis, which is a critical pathophysiological event in chronic kidney diseases, is associated with renal epithelial-to-mesenchymal transition (EMT). Epoxyeicosatrienoic acids (EETs) are Cyp epoxygenase arachidonic acid metabolites that demonstrate biological actions that result in kidney protection. Herein, we investigated the ability of 14,15-EET and its synthetic analog, EET-A, to reduce kidney fibrosis induced by unilateral ureter obstruction (UUO). C57/BL6 male mice underwent sham or UUO surgical procedures and were treated with 14,15-EET or EET-A in osmotic pump (i...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28706998/the-extended-erlang-truncated-exponential-distribution-properties-and-application-to-rainfall-data
#18
I E Okorie, A C Akpanta, J Ohakwe, D C Chikezie
The Erlang-Truncated Exponential ETE distribution is modified and the new lifetime distribution is called the Extended Erlang-Truncated Exponential EETE distribution. Some statistical and reliability properties of the new distribution are given and the method of maximum likelihood estimate was proposed for estimating the model parameters. The usefulness and flexibility of the EETE distribution was illustrated with an uncensored data set and its fit was compared with that of the ETE and three other three-parameter distributions...
June 2017: Heliyon
https://www.readbyqxmd.com/read/28704241/prognostic-value-of-electrocardiogram-exercise-testing-for-risk-stratification-in-asymptomatic-coronary-artery-disease
#19
Sara L Guerreiro, Jorge M Ferreira, João M Calqueiro, Miguel S Mendes
BACKGROUND: Several variables of electrocardiogram exercise testing (EET) predict cardiovascular events in the general population and in patients with coronary artery disease (CAD). However, most of the studies have not included patients with asymptomatic CAD. The aim of this study was to evaluate the prognostic value of EET in asymptomatic CAD patients. PATIENTS AND METHODS: We carried out a retrospective single-center analysis including all patients with asymptomatic CAD documented by angiography who underwent EET from January 2010 to December 2013...
July 12, 2017: Coronary Artery Disease
https://www.readbyqxmd.com/read/28698657/anaerobic-oxidation-of-methane-coupled-with-extracellular-electron-transfer-to-electrodes
#20
Yaohuan Gao, Jangho Lee, Josh D Neufeld, Joonhong Park, Bruce E Rittmann, Hyung-Sool Lee
Anaerobic oxidation of methane (AOM) is an important process for understanding the global flux of methane and its relation to the global carbon cycle. Although AOM is known to be coupled to reductions of sulfate, nitrite, and nitrate, evidence that AOM is coupled with extracellular electron transfer (EET) to conductive solids is relatively insufficient. Here, we demonstrate EET-dependent AOM in a biofilm anode dominated by Geobacter spp. and Methanobacterium spp. using carbon-fiber electrodes as the terminal electron sink...
July 11, 2017: Scientific Reports
keyword
keyword
45694
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"