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https://www.readbyqxmd.com/read/27936294/disulfide-catalyzed-visible-light-mediated-oxidative-cleavage-of-c-c-bonds-and-evidence-of-an-olefin-disulfide-charge-transfer-complex
#1
Yuchao Deng, Xiao-Jing Wei, Hui Wang, Yuhan Sun, Timothy Noël, Xiao Wang
A photocatalytic method for the aerobic oxidative cleavage of C=C bonds has been developed. Electron-rich aromatic disulfides were employed as photocatalyst. Upon visible-light irradiation, typical mono- and multi-substituted aromatic olefins could be converted into ketones and aldehydes at ambient temperature. Experimental and computational studies suggest that a disulfide-olefin charge-transfer complex is possibly responsible for the unconventional dissociation of S-S bond under visible light.
December 9, 2016: Angewandte Chemie
https://www.readbyqxmd.com/read/27936145/diurnal-patterns-of-physical-activity-in-relation-to-activity-induced-energy-expenditure-in-52-to-83-years-old-adults
#2
Giulio Valenti, Alberto G Bonomi, Klaas R Westerterp
BACKGROUND: Ageing is associated with a declining physical activity level (PAL) and changes in the diurnal activity pattern. Changes in the activity pattern might help explaining the age-associated reduction of physical activity. OBJECTIVE: The aims were to investigate diurnal activity patterns within groups of older adults classified by PAL, to investigate diurnal activity patterns within age-groups and to investigate the association between the drop in activity and aerobic fitness...
2016: PloS One
https://www.readbyqxmd.com/read/27935992/intense-exercise-and-aerobic-conditioning-associated-with-chromium-or-l-carnitine-supplementation-modified-the-fecal-microbiota-of-fillies
#3
Maria Luiza Mendes de Almeida, Walter Heinz Feringer, Júlia Ribeiro Garcia Carvalho, Isadora Mestriner Rodrigues, Lilian Rezende Jordão, Mayara Gonçalves Fonseca, Adalgiza Souza Carneiro de Rezende, Antonio de Queiroz Neto, J Scott Weese, Márcio Carvalho da Costa, Eliana Gertrudes de Macedo Lemos, Guilherme de Camargo Ferraz
Recent studies performed in humans and rats have reported that exercise can alter the intestinal microbiota. Athletic horses perform intense exercise regularly, but studies characterizing horse microbiome during aerobic conditioning programs are still limited. Evidence has indicated that this microbial community is involved in the metabolic homeostasis of the host. Research on ergogenic substances using new sequencing technologies have been limited to the intestinal microbiota and there is a considerable demand for scientific studies that verify the effectiveness of these supplements in horses...
2016: PloS One
https://www.readbyqxmd.com/read/27935957/intracellular-zn-ii-intoxication-leads-to-dysregulation-of-the-perr-regulon-resulting-in-heme-toxicity-in-bacillus-subtilis
#4
Pete Chandrangsu, John D Helmann
Transition metal ions (Zn(II), Cu(II)/(I), Fe(III)/(II), Mn(II)) are essential for life and participate in a wide range of biological functions. Cellular Zn(II) levels must be high enough to ensure that it can perform its essential roles. Yet, since Zn(II) binds to ligands with high avidity, excess Zn(II) can lead to protein mismetallation. The major targets of mismetallation, and the underlying causes of Zn(II) intoxication, are not well understood. Here, we use a forward genetic selection to identify targets of Zn(II) toxicity...
December 9, 2016: PLoS Genetics
https://www.readbyqxmd.com/read/27935086/exercise-responses-in-patients-with-chronically-high-creatine-kinase-levels
#5
Christopher B Cooper, Brett A Dolezal, Eric V Neufeld, Perry Shieh, John R Jenner, Marshall Riley
INTRODUCTION: Elevated serum creatine kinase (CK) is often taken to reflect muscle disease, but many individuals have elevated CK without a specific diagnosis. How elevated CK reflects muscle metabolism during exercise is not known. METHODS: Participants (46 men, 48 women) underwent incremental exercise testing to assess aerobic performance, cardiovascular response, and ventilatory response. Serum lactate, ammonia, and CK were measured at rest, 4 minutes into exercise, and 2 minutes into recovery...
December 9, 2016: Muscle & Nerve
https://www.readbyqxmd.com/read/27935072/physical-exercise-in-myasthenia-gravis-is-safe-and-improves-neuromuscular-parameters-and-physical-performance-based-measures-a-pilot-study
#6
Elisabet Westerberg, Carl Johan Molin, Ida Lindblad, Margareta Emtner, Anna Rostedt Punga
INTRODUCTION: Due to the shortage of exercise-related research in Myasthenia Gravis (MG), there are no consensus guidelines on physical exercise for MG patients. METHODS: In this prospective pilot study, 10 MG patients with mild disease performed supervised aerobic and resistance training twice weekly for 12 weeks. The Myasthenia Gravis Composite (MGC) score, compound motor action potential (CMAP), repetitive nerve stimulation, muscle force, physical performance-based measures, serum levels of interleukin-6, muscle enzymes as well as immuno-microRNAs miR-150-5p and miR-21-5p were assessed before and after the training period...
December 9, 2016: Muscle & Nerve
https://www.readbyqxmd.com/read/27934986/a-unique-copper-ii-assisted-transformation-of-acetylacetone-dioxime-in-acetone-that-leads-to-one-dimensional-quinoxaline-bridged-coordination-polymers
#7
Zoi G Lada, Amaia Soto Beobide, Aikaterini Savvidou, Catherine P Raptopoulou, Vassilis Psycharis, George A Voyiatzis, Mark M Turnbull, Spyros P Perlepes
The reactions of copper(ii) carboxylate sources with acetylacetone dioxime (acacdoH2) in Me2CO have been studied and a novel, metal ion-assisted ligand transformation has been discovered. The reaction of [Cu2(diba)4(dibaH)2] and acacdoH2 (1 : 1.5) in Me2CO has provided access to the complex {[Cu2(diba)4(qunx)]}n (1) in low yield (25-30%), where dibaH is 3,3-dimethylbutyric acid and qunx is quinoxaline. The [Cu2(piv)4(pivH)2]/acacdoH2 (1 : 1.5) reaction system in warm Me2CO, where pivH is pivalic acid, gave the analogous complex {[Cu2(piv)4(qunx)]}n (2) in moderate yield (∼50%)...
December 9, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/27934460/kinetic-study-of-the-reaction-of-the-phthalimide-n-oxyl-radical-with-amides-structural-and-medium-effects-on-the-hydrogen-atom-transfer-reactivity-and-selectivity
#8
Massimo Bietti, Veronica Forcina, Osvaldo Lanzalunga, Andrea Lapi, Teo Martin, Marco Mazzonna, Michela Salamone
A kinetic study of the hydrogen atom transfer (HAT) reactions from a series of secondary N-(4-X-benzyl)acetamides and tertiary amides to the phthalimide-N-oxyl radical (PINO) has been carried out. The results indicate that HAT is strongly influenced by structural and medium effects; in particular, the addition of Brønsted and Lewis acids determines a significant deactivation of C-H bonds α to the amide nitrogen of these substrates. Thus, by changing the reaction medium, it is possible to carefully control the regioselectivity of the aerobic oxidation of amides catalyzed by N-hydroxyphthalimide, widening the synthetic versatility of this process...
December 2, 2016: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/27934274/incorporation-of-technetium-into-spinel-ferrites
#9
Wayne W Lukens, Nicola Magnani, Tolek Tyliszczak, Carolyn I Pearce, David K Shuh
Technetium ((99)Tc) is a problematic fission product for the long-term disposal of nuclear waste due to its long half-life, high fission yield, and to the environmental mobility of pertechnetate, the stable species in aerobic environments. One approach to preventing (99)Tc contamination is using sufficiently durable waste forms. We report the incorporation of technetium into a family of synthetic spinel ferrites that have environmentally durable natural analogs. A combination of X-ray diffraction, X-ray absorption fine structure spectroscopy, and chemical analysis reveals that Tc(IV) replaces Fe(III) in octahedral sites and illustrates how the resulting charge mismatch is balanced...
December 6, 2016: Environmental Science & Technology
https://www.readbyqxmd.com/read/27934230/autoxidation-of-reduced-horse-heart-cytochrome-c-catalyzed-by-cardiolipin-containing-membranes
#10
Lee Serpas, Bridget Milorey, Leah A Pandiscia, Anthony W Addison, Reinhard Schweitzer-Stenner
Visible circular dichroism, absorption, and fluorescence spectroscopy were used to probe the binding of horse heart ferrocytochrome c to anionic cardiolipin (CL) head groups on the surface of 1,1',2,2'-tetraoleoyl cardiolipin (TOCL)/1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC) (20%:80%) liposomes in an aerobic environment. We found that ferrocytochrome c undergoes a conformational transition upon binding that leads to complete oxidation of the protein at intermediate and high CL concentrations. At low lipid concentrations, the protein maintains a structure that is only slightly different from its native one, whereas an ensemble of misligated predominantly hexacoordinated low-spin states become increasingly populated at high lipid concentrations...
December 8, 2016: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/27933450/effects-of-exercise-intervention-in-breast-cancer-patients-is-mobile-health-mhealth-with-pedometer-more-effective-than-conventional-program-using-brochure
#11
Kyeong Eun Uhm, Ji Sung Yoo, Seung Hyun Chung, Jong Doo Lee, Ilkyun Lee, Joong Il Kim, Se Kyung Lee, Seok Jin Nam, Yong Hyun Park, Ji Youl Lee, Ji Hye Hwang
PURPOSE: To investigate and compare the effects of mobile health (mHealth) and pedometer with conventional exercise program using a brochure on physical function and quality of life (QOL). METHODS: The study was a prospective, quasi-randomized multicenter trial where 356 patients whose cancer treatment had been terminated were enrolled. All patients were instructed to perform a 12-week regimen of aerobic and resistance exercise. The mHealth group received a pedometer and a newly developed smartphone application to provide information and monitor the prescribed exercises...
December 8, 2016: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/27933401/improvement-of-abnormal-vaginal-flora-in-ugandan-women-by-self-testing-and-short-use-of-intravaginal-antimicrobials
#12
G Donders, G Bellen, F Donders, J Pinget, I Vandevelde, T Michiels, J Byamughisa
The vaginal composition of African women is more often lactobacillus-deficient compared to that of women from other areas around the world. Lactobacillus-deficient microflora is a known risk factor for serious health problems, such as preterm birth, cervix cancer, and entrapment of human immunodeficiency virus (HIV) and other sexually transmitted infections (STIs). The aim of this study was to assess the effect of local vaginal antibiotic or antiseptic treatment on abnormal vaginal flora (AVF), aerobic vaginitis (AV), and bacterial vaginosis (BV) among women in rural, semi-urban, and urban areas in Uganda, as compared to placebo...
December 8, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27932655/complete-genome-sequence-of-nitrilotriacetate-degrading-aminobacter-aminovorans-kctc-2477t
#13
Sang-Heon Lee, Hanna Choe, Arshan Nasir, Doo-Sang Park, Kyung Mo Kim
Aminobacter aminovorans is a Gram-negative, pleomorphic rod-shaped, flagellated, and obligately aerobic bacterium that was isolated from soil. Here, we report the complete genome sequence of A. aminovorans KCTC 2477(T), which degrades nitrilotriacetate-metal complexes and iminodiacetate, a metabolic intermediate of nitrilotriacetate.
December 8, 2016: Genome Announcements
https://www.readbyqxmd.com/read/27932265/ottawa-panel-evidence-based-clinical-practice-guidelines-for-structured-physical-activity-in-the-management-of-juvenile-idiopathic-arthritis
#14
REVIEW
Sabrina Cavallo, Lucie Brosseau, Karine Toupin-April, George A Wells, Christine A M Smith, Arlanna G Pugh, Jennifer Stinson, Roanne Thomas, Sara Ahmed, Ciarán M Duffy, Prinon Rahman, Inmaculada C Àlvarez-Gallardo, Laurianne Loew, Gino De Angelis, Debbie Ehrmann Feldman, Annette Majnemer, Isabelle J Gagnon, Désirée Maltais, Marie-Ève Mathieu, Glen P Kenny, Susan Tupper, Kristi Whitney-Mahoney, Sarah Bigford
OBJECTIVE: To create guidelines focused on the use of structured physical activity (PA) in the management of juvenile idiopathic arthritis (JIA). DATA SOURCES: A systematic literature search was conducted using the electronic databases Cochrane Central Register of Controlled Trials, Medline (Ovid), EMBASE (Ovid), and Physiotherapy Evidence Database (PEDro) for all studies related to PA programs for JIA from January 1966 until December 2014, and was updated in May 2015...
December 5, 2016: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/27932054/changes-in-physical-activity-sedentary-time-and-risk-of-falling-the-women-s-health-initiative-observational-study
#15
Jennifer W Bea, Cynthia A Thomson, Robert B Wallace, Chunyuan Wu, Rebecca A Seguin, Scott B Going, Andrea LaCroix, Charles Eaton, Judith K Ockene, Michael J LaMonte, Rebecca Jackson, W Jerry Mysiw, Jean Wactawski-Wende
Falling significantly affects quality of life, morbidity, and mortality among older adults. We sought to evaluate the prospective association between sedentary time, physical activity, and falling among post-menopausal women aged 50-79 y recruited to the Women's Health Initiative Observational Study between 1993 and 1998 from 40 clinical centers across the United States. Baseline (B) and change in each of the following were evaluated at year 3 (Y3) and year 6 (Y6; baseline n=93,676; Y3 n=76,598; Y6 n=75,428): recreational physical activity (MET-h/wk), sitting, sleeping (min/d), and lean body mass by dual energy X-ray absorptiometry (subset N=6,475)...
December 5, 2016: Preventive Medicine
https://www.readbyqxmd.com/read/27931524/blood-pressure-and-lv-remodeling-among-american-style-football-players
#16
Jeffrey Lin, Francis Wang, Rory B Weiner, James R DeLuca, Meagan M Wasfy, Brant Berkstresser, Gregory D Lewis, Adolph M Hutter, Michael H Picard, Aaron L Baggish
OBJECTIVES: This study sought to determine the relationships among American-style football (ASF) participation, acquired left ventricular (LV) hypertrophy, and LV systolic function as assessed using contemporary echocardiographic parameters. BACKGROUND: Participation in ASF has been associated with development of hypertension and LV hypertrophy. To what degree these processes impact LV function is unknown. METHODS: This was a prospective, longitudinal cohort study evaluating National Collegiate Athletic Association Division I football athletes stratified by field position (linemen: n = 30; vs...
December 2016: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/27931375/chemical-waste-and-allied-products
#17
Yung-Tse Hung, Hamidi Abdul Aziz, Siti Fatihah Ramli, Ruth Yu-Li Yeh, Lian-Huey Liu, Christopher Robert Huhnke
This review of literature published in 2015 focuses on waste related to chemical and allied products. The topics cover the waste management, physicochemical treatment, aerobic granular, aerobic waste treatment, anaerobic granular, anaerobic waste treatment, chemical waste, chemical wastewater, fertilizer waste, fertilizer wastewater, pesticide wastewater, pharmaceutical wastewater, ozonation. cosmetics waste, groundwater remediation, nutrient removal, nitrification denitrification, membrane biological reactor, and pesticide waste...
October 2016: Water Environment Research: a Research Publication of the Water Environment Federation
https://www.readbyqxmd.com/read/27931365/membrane-processes
#18
Marie-Laure Pellegrin, Marie S Burbano, Mary E Sadler, Jason Diamond, Simon Baker, Anthony D Greiner, Sara Arabi, Joseph Wong, Alexandra Doody, Lokesh P Padhye, Keith Sears, Peter Kistenmacher, Fraser Kent, Leila Tootchi, Jorge Aguinaldo, Sara Saddredini, Bill Schilling, Kyungnan Min, Robert McCandless, Bryce Danker, Neranga P Gamage, Sunny Wang, Peter Aerts
This review, for literature published in 2015, contains information related to membrane processes for municipal and industrial applications. This review is a subsection of the Treatment Systems section of the annual Water Environment Federation literature review and covers the following topics: pretreatment, membrane bioreactor (MBR) configuration, design, nutrient removal, operation, industrial treatment, anaerobic membrane systems, reuse, microconstituents removal, membrane technology advances, membrane fouling, and modeling...
October 2016: Water Environment Research: a Research Publication of the Water Environment Federation
https://www.readbyqxmd.com/read/27931363/activated-sludge-and-other-aerobic-suspended-culture-processes
#19
Chunying Li, Li Wei, Chein-Chi Chang, Yuhua Zhang, Dong Wei
This is a literature review for the year 2015 and contains information specifically associated with suspended growth processes including activated sludge, upflow anaerobic sludge blanket, and sequencing batch reactors. The review encompasses modeling and kinetics, nutrient removal, system design and operation. Compared to past reviews, many topics show increase in activity in 2015. These include, fate and effect of xenobiotics, industrial wastes treatment with sludge, and pretreatment for the activated sludge...
October 2016: Water Environment Research: a Research Publication of the Water Environment Federation
https://www.readbyqxmd.com/read/27931183/evolution-of-mitosome-metabolism-and-invasion-related-proteins-in-cryptosporidium
#20
Shiyou Liu, Dawn M Roellig, Yaqiong Guo, Na Li, Michael A Frace, Kevin Tang, Longxian Zhang, Yaoyu Feng, Lihua Xiao
BACKGROUND: The switch from photosynthetic or predatory to parasitic life strategies by apicomplexans is accompanied with a reductive evolution of genomes and losses of metabolic capabilities. Cryptosporidium is an extreme example of reductive evolution among apicomplexans, with losses of both the mitosome genome and many metabolic pathways. Previous observations on reductive evolution were largely based on comparative studies of various groups of apicomplexans. In this study, we sequenced two divergent Cryptosporidium species and conducted a comparative genomic analysis to infer the reductive evolution of metabolic pathways and differential evolution of invasion-related proteins within the Cryptosporidium lineage...
December 8, 2016: BMC Genomics
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