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John J Wroblewski, Allen Y Hu
BACKGROUND AND OBJECTIVE: To evaluate the effects of squalamine (OHR-102; Ohr Pharmaceuticals, New York, NY) and ranibizumab (Lucentis; Genentech, South San Francisco, CA) on macular edema (ME) secondary to retinal vein occlusion (RVO). PATIENTS AND METHODS: Twenty consecutive, treatment-naïve patients with RVO-related ME received topical squalamine and intravitreal ranibizumab 0.5 mg for 10 weeks, followed by randomization to continue or discontinue squalamine...
October 1, 2016: Ophthalmic Surgery, Lasers & Imaging Retina
Elisabetta Alberico, Alastair J J Lennox, Lydia K Vogt, Haijun Jiao, Wolfgang Baumann, Hans-Joachim Drexler, Martin Nielsen, Anke Spannenberg, Marek P Checinski, Henrik Junge, Matthias Beller
Ruthenium PNP complex 1a (RuH(CO)Cl(HN(C2H4Pi-Pr2)2)) represents a state-of-the-art catalyst for low-temperature (<100 °C) aqueous methanol dehydrogenation to H2 and CO2. Herein, we describe an investigation that combines experiment, spectroscopy and theory to provide a mechanistic rationale for this process. During catalysis, the presence of two anionic resting states was revealed, Ru-dihydride (3-) and Ru-monohydride (4-) that are deprotonated at nitrogen in the pincer ligand backbone. DFT calculations showed that O- and CH- coordination modes of methoxide to ruthenium compete, and form complexes 4- and 3-, respectively...
October 19, 2016: Journal of the American Chemical Society
Me-Hea Park
The high metabolic rate of harvested asparagus spears (Asparagus officinalis L.) causes rapid deterioration. To extend shelf life, we investigated the effect of sucrose treatment on asparagus during storage. Asparagus spears were treated with 3%, 5%, and 10% sucrose and stored at 2 °C for 20 h. Cellular respiration decreased, but other processes were unaltered by exogenous sucrose. The overall appearance of asparagus treated with 3% sucrose and stored at 2 °C for 18 days was rated as good and excellent, unlike that of untreated spears...
October 14, 2016: Biochemical and Biophysical Research Communications
Raquel Rose Silva Correia, Jean Remy Davée Guimarães
Recent studies have shown Hg methylation in mangrove sediments, however, little is known about the different microorganism consortia involved. We investigated the participation of prokaryotes in general, iron-reducing bacteria-IRB, sulfate-reducing bacteria-SRB, methanogens and fungi in Hg methylation and sulfate reduction rates (SRR) in mangrove sediments using iron amendments for IRB and specific inhibitors for the other microorganisms. Sediment samples were collected from two mangrove zones, tidal flat and mangrove forest (named root sediments)...
October 14, 2016: Chemosphere
Dawn Schroeder, Wendy Duggleby, Brenda L Cameron
BACKGROUND: In families where genetic testing for the breast cancer 1 and 2 genes (BRCA1/2) has not identified a deleterious mutation, the risk for hereditary breast cancer (HBC) can still be high when there is a strong family history. Little is known about how an awareness of risk for HBC impacts the everyday lives of unaffected women (no personal history for breast and/or ovarian cancer) in these families. OBJECTIVE: The aim of this study is to explore how unaffected women, living in BRCA1/2-negative families, experience living with risk for HBC...
October 4, 2016: Cancer Nursing
Amit Chakraborty, Joydeb Goura, Prasenjit Bag, Arun Kumar Bar, Jean-Pascal Sutter, Vadapalli Chandrasekhar
Utilizing a new ferrocene-based compartmental ligand, H4L (1), a series of novel heterometallic complexes [{LZn(μ-OAc)Dy}4(μ4-H2O)] (2), [{LZn(μ-OAc)Tb}4(μ4-H2O)] (3), [{LZn(μ-OAc)Ho}4(μ4-H2O)] (4), [L = Fe[(C5H4){-C(Me)[double bond, length as m-dash]N-N[double bond, length as m-dash]C6H3-(o-O)(m-O)}]2] were synthesized and characterized. 2 and 3 crystallize in the monoclinic crystal system in the I2/m space group, whereas 4 crystallizes in the tetragonal crystal system in the I4/m space group. The tetra deprotonated ligand L(4-) has two distinct coordination compartments: one pocket (2N, 2O) suitable for the transition metal (3d) ions and another pocket (4O) suitable for lanthanide (4f) metal ions...
October 17, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
Tara Lally
In my final year of learning disability nursing at Queen's University Belfast, I travelled to Romania with a team of nursing students for our 4-week elective placement.
September 14, 2016: Nursing Standard
Anna K Taylor, Maria Loades, Amberly Lc Brigden, Simon M Collin, Esther Crawley
BACKGROUND: Paediatric chronic fatigue syndrome/myalgic encephalomyelitis (CFS/ME) has a prevalence of 0.4-2.4% and is defined as 'generalised disabling fatigue persisting after routine tests and investigations have failed to identify an obvious underlying cause'. One-third of young people with CFS/ME have probable depression. Little is known about why depression develops, the relationship between depression and CFS/ME, or what treatment might be helpful. METHODS: We conducted nine semi-structured interviews with young people with CFS/ME (aged 13-17 years, 8/9 female) and probable depression, covering perceived causes of depression, the relationship between CFS/ME and depression, and treatment strategies...
October 14, 2016: Clinical Child Psychology and Psychiatry
Megan E Harrison, Chantalle Clarkin, Kristina Rohde, Kerry Worth, Nathalie Fleming
STUDY OBJECTIVE: To share pregnant and parenting youth's experiences with health care in order to inform recommendations for promoting youth-friendly medical encounters. DESIGN: This exploratory study used a qualitative descriptive approach. SETTING: Three urban centers that service pregnant youth and young parents in a large Canadian city. PARTICIPANTS: Convenience sample of 26 participants (mean age of 18.7 years) was recruited across sites...
October 11, 2016: Journal of Pediatric and Adolescent Gynecology
Prakasha Gowda, Thomas E Spratt
4-(Methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK) is a potent tobacco carcinogen that forms mutagenic DNA adducts including O(6)-methyl-2'-deoxyguanosine (O(6)-Me-dG), O(6)-[4-(3-pyridyl)-4-oxobut-1-yl]-dG (O6-POB-dG), O(2)-methylthymidine (O(2)-Me-dT), and O(2)-POB-dT. We evaluated the ability of human DNA polymerase ν to bypass this damage to evaluate the structural constraints on substrates for pol ν and to evaluate if there is kinetic evidence suggesting the in vivo activity of pol ν on tobacco-induced DNA damage...
October 14, 2016: Chemical Research in Toxicology
Pil Sung Gu, Minho Moon, Jin Gyu Choi, Myung Sook Oh
Mulberry fruit, which has been long used in traditional oriental medicine, was reported to ameliorate motor dysfunction and dopaminergic neuronal degeneration via antioxidant and antiapoptotic effects in an animal model of Parkinson's disease (PD). More than 95% of PD patients exhibit nonmotor problems such as olfactory dysfunction and gastrointestinal constipation, which are generally considered to be early symptoms of PD. However, few studies have actually examined potential drugs to treat early PD symptoms...
September 22, 2016: Journal of Nutritional Biochemistry
Ann C Palmenberg
Science is our best current approximation of the way things work. You cannot do science unless you believe there is a discernable truth inherent to the arrangement of our tangible world. The problem is, we in our given time never know where exactly the asymptote lies or how far we are from it. My curiosity about the natural world is innate, but fate has variously gifted me with outstanding personal opportunities to indulge that curiosity through the study of viruses. To a woman of the boomer generation, professional paths were not always open-door, and to a certain extent they still aren't...
September 29, 2016: Annual Review of Virology
Julie Redfern, Karla Santo, Genevieve Coorey, Jay Thakkar, Maree Hackett, Aravinda Thiagalingam, Clara K Chow
INTRODUCTION: Many studies have now demonstrated the efficacy of text messaging in positively changing behaviours. We aimed to identify features and factors that explain the effectiveness of a successful text messaging program in terms of user engagement, perceived usefulness, behavior change and program delivery preferences. METHODS: Mixed methods qualitative design combining four data sources; (i) analytic data extracted directly from the software system, (ii) participant survey, (iii) focus groups to identify barriers and enablers to implementation and mechanisms of effect and (iv) recruitment screening logs and text message responses to examine engagement...
2016: PloS One
Dimuthu C Senevirathna, Victoria L Blair, Melissa V Werrett, Philip C Andrews
Eight novel bismuth(III) sulfonato compounds have been synthesized and characterized using the sonochemical reaction of Bi2O3 with a range of sulfonic acids, including 2,5-dimethylbenzenesulfonic acid (2,5-DMSH), 2,4-dinitrobenzenesulfonic acid (2,4-DNSH), 2,5-dichlorobenzenesulfonic acid (2,5-DCSH), 1,2-benzenedisulfonic acid (1,2-BDSH2), 1,3-benzenedisulfonic acid (1,3-BDSH2), 2-sulfobenzoic acid (2-SBH2), 3-sulfobenzoic acid (3-SBH2), and 2-naphthalenesulfonic acid (NPSH). Six of the complexes (1, 2, 4, and 6-8) were structurally characterized through single-crystal X-ray crystallography...
October 14, 2016: Inorganic Chemistry
Takuya Kaji, Motoki Murai, Hiroaki Itoh, Jyunichiro Yasukawa, Hiroshi Hamamoto, Kazuhisa Sekimizu, Masayuki Inoue
Lysocin E (1) is a structurally complex 37-membered depsipeptide comprising 12 amino-acid residues with an N-methylated amide and an ester linkage. Compound 1 binds to menaquinone (MK) in the bacterial membrane to exert its potent bactericidal activity. To decipher the biologically important functionalities within this unique antibiotic, we performed a comprehensive structure-activity relationship (SAR) study by systematically changing the side-chain structures of l-Thr-1, d-Arg-2, N-Me-d-Phe-5, d-Arg-7, l-Glu-8, and d-Trp-10...
October 14, 2016: Chemistry: a European Journal
Ellen Brady, Julia Segar, Caroline Sanders
BACKGROUND: The ethics of research into online communities is a long-debated issue, with many researchers arguing that open-access discussion groups are publically accessible data and do not require informed consent from participants for their use for research purposes. However, it has been suggested that there is a discrepancy between the perceived and actual privacy of user-generated online content by community members. OBJECTIVE: There has been very little research regarding how privacy is experienced and enacted online...
October 13, 2016: Journal of Medical Internet Research
Aquila Flower
Insect outbreaks often occur synchronously across large spatial scales, but the long-term temporal stability of the phenomenon and the mechanisms behind it are not well understood. In this study, I use a widespread lepidopteran defoliator native to western North America-the western spruce budworm-as a case study to explore patterns of and potential causes for synchronous population fluctuations. Analyses of synchrony are typically severely limited by the short historical records available for many species. To overcome this limitation, I compiled multi-century dendrochronological reconstructions of western spruce budworm outbreaks from across much of the species' range...
2016: PloS One
Silvana E Mengoni, Bob Gates, Georgina Parkes, David Wellsted, Garry Barton, Howard Ring, Mary Ellen Khoo, Deela Monji-Patel, Karin Friedli, Asif Zia, Marie-Anne Durand
PURPOSE: Epilepsy affects 1 in 5 people with an intellectual disability (ID), but little is known about their experiences of living with epilepsy. A qualitative study was conducted to investigate the impact and management of epilepsy in people with ID. MATERIALS AND METHODS: People with epilepsy and ID and their carers were invited to take part in semi-structured interviews. Eleven participants with ID and their carers were interviewed together, one participant with ID and their carer were interviewed separately, two interviews took place with the participant with ID only, and one interview took place with the carer only...
October 10, 2016: Epilepsy & Behavior: E&B
John J Kiernicki, Maryline G Ferrier, Juan S Lezama Pacheco, Henry S La Pierre, Benjamin W Stein, Matthias Zeller, Stosh A Kozimor, Suzanne C Bart
Arylazide and diazene activation by highly reduced uranium(IV) complexes bearing trianionic redox-active pyridine(diimine) ligands, [Cp(P)U((Mes)PDI(Me))]2 (1-Cp(P)), Cp*U((Mes)PDI(Me))(THF) (1-Cp*) (Cp(P) = 1-(7,7-dimethylbenzyl)cyclopentadienide; Cp* = η(5)-1,2,3,4,5-pentamethylcyclopentadienide), and Cp*U((t)Bu-(Mes)PDI(Me)) (THF) (1-(t)Bu) (2,6-((Mes)N═CMe)2-p-R-C5H2N, Mes = 2,4,6-trimethylphenyl; R = H, (Mes)PDI(Me); R = C(CH3)3, (t)Bu-(Mes)PDI(Me)), has been investigated. While 1-Cp* and 1-Cp(P) readily reduce N3R (R = Ph, p-tolyl) to form trans-bis(imido) species, Cp(P)U(NAr)2((Mes)PDI(Me)) (Ar = Ph, 2-Cp(P); Ar = p-Tol, 3-Cp(P)) and Cp*U(NPh)2((Mes)PDI(Me)) (2-Cp*), only 1-Cp* can cleave diazene N═N double bonds to form the same product...
October 12, 2016: Journal of the American Chemical Society
Hannah Dengel, Crispin Lichtenberg
The synthetic access to cationic bismuth compounds based on simple, monodentate, synthetically useful amido ligands, [Bi(NR2)2(L)n]+, has been investigated (R = Me, iPr, Ph; L = neutral ligand). With [BPh4]- as a counteranion, the formation of contact ion pairs and subsequent phenyl transfer from B to Bi is observed. An intermediate of this reaction, [Bi(NMe2)2(HNMe2)(BPh4)] (1), could be isolated and fully characterized. The use of fluorinated tetrarylborates as counteranions leads to more stable cationic bismuth amides...
October 12, 2016: Chemistry: a European Journal
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