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Danielle Oliveira Dos Anjos, Eliomara Sousa Sobral Alves, Vinicius Tomaz Gonçalves, Sheila Suarez Fontes, Mateus Lima Nogueira, Ana Márcia Suarez-Fontes, João Batista Neves da Costa, Fabricio Rios-Santos, Marcos André Vannier-Santos
Natural products comprise valuable sources for new antiparasitic drugs. Here we tested the effects of a novel β-lapachone derivative on Trypanosoma cruzi parasite survival and proliferation and used microscopy and cytometry techniques to approach the mechanism(s) underlying parasite death. The selectivity index determination indicate that the compound trypanocidal activity was over ten-fold more cytotoxic to epimastigotes than to macrophages or splenocytes. Scanning electron microscopy analysis revealed that the R72 β-lapachone derivative affected the T...
October 12, 2016: International Journal for Parasitology, Drugs and Drug Resistance
Majdi Hajri, Marie-Anne Esteve, Omar Khoumeri, Raoudha Abderrahim, Thierry Terme, Marc Montana, Patrice Vanelle
We report a novel series of quinoxaline derivatives from which agents with antiproliferative activity have been identified. Two ethyl 3-(arylethynyl)quinoxaline-2-carboxylates demonstrated substantial antiproliferative activity against both human non-small cell lung carcinoma (A549) and glioblastoma (U87-MG) cell lines. Pyrido[4,3-b]quinoxalin-1(2H)-ones demonstrated poor activity against A549 and U87-MG cell lines. Three of the derivatives in ethyl 3-(arylethynyl)quinoxaline-2-carboxylate series demonstrated substantial antiproliferative activity...
October 13, 2016: European Journal of Medicinal Chemistry
Poul Jennum, Anne Sabers, Jakob Christensen, Rikke Ibsen, Jakob Kjellberg
PURPOSE: Epilepsy surgery has been a standard treatment for refractory epilepsies that cannot be controlled by standard medical treatment. We aimed to evaluate the health and social consequences of resective surgery relative to controls from a study of national data. METHODS: Using the Danish National Patient Registry we identified all subjects with an epilepsy diagnosis between 1996 and 2009 and compared them with a group of patients with an epilepsy diagnosis who had had neither epilepsy surgery nor a vagus stimulation diagnosis by the index date, and who were matched by gender, index year for epilepsy diagnosis, and index year for epilepsy surgery...
October 6, 2016: Seizure: the Journal of the British Epilepsy Association
Vincent Poot, Maaike Hoekstra, Mitchell A A Geleijnse, Mark C M van Loosdrecht, Julio Pérez
Partial nitritation was stably achieved in a bench-scale airlift reactor (1.5L) containing granular sludge. Continuous operation at 20 °C treating low-strength synthetic wastewater (50 mg N-NH4(+)/L and no COD) achieved nitrogen loading rates of 0.8 g N-NH4(+)/(L·d) during partial nitritation. The switch between nitrite-oxidizing bacteria (NOB) repression and NOB proliferation was observed when ammonium concentrations in the reactor were below 2-5 mg N-NH4(+)/L for DO concentrations lower than 4 mg O2/L at 20 °C...
October 11, 2016: Water Research
Rocío Carmona, Cristina Linares, Cristina Ortiz, Blanca Vázquez, Julio Díaz
BACKGROUND: Although the effects of noise on population morbidity and mortality have been observed both in the short and long term, the morbidity and mortality indicators used to date have not enabled information on such health effects to be accessed in real time. At an international level, there are relatively few studies, mostly recent, which have considered an alternative indicator, such as the demand for medical attention provided by emergency services, taking into account environmental factors other than noise...
October 19, 2016: Environmental Research
Anja Stajnko, Ingrid Falnoga, Janja Snoj Tratnik, Darja Mazej, Marta Jagodic, Mladen Krsnik, Alfred B Kobal, Marija Prezelj, Lijana Kononenko, Milena Horvat
BACKGROUND: Urine cadmium (Cd) and renal function biomarkers, mostly analysed in urine spot samples, are well established biomarkers of occupational exposure. Their use and associations at low environmental level are common, but have recently been questioned, particularly in terms of physiological variability and normalisation bias in the case of urine spot samples. AIM: To determine the appropriateness of spot urine and/or blood Cd exposure biomarkers and their relationships with renal function biomarkers at low levels of exposure...
October 19, 2016: Environmental Research
Yanjun Liu, Yanting Liu, Hao Li, Xindi Fu, Hanwen Guo, Ruihong Meng, Wenjing Lu, Ming Zhao, Hongtao Wang
Aromatic compounds (ACs) emitted from landfills have attracted a lot of attention of the public due to their adverse impacts on the environment and human health. This study assessed the health risk impacts of the fugitive ACs emitted from the working face of a municipal solid waste (MSW) landfill in China. The emission data was acquired by long-term in-situ samplings using a modified wind tunnel system. The uncertainty of aromatic emissions is determined by means of statistics and the emission factors were thus developed...
October 19, 2016: Environment International
Shunjie Yan, Lingjie Song, Shifang Luan, Zhirong Xin, Shanshan Du, Hengchong Shi, Shuaishuai Yuan, Yuming Yang, Jinghua Yin
Bacterial infections are problematic in many healthcare-associated devices. Antibacterial surfaces integrating the strength of bacteria repellent and bactericidal functions exhibit an encouraging efficacy in tackling this problem. Herein, a hierarchical dual-function antibacterial polymer brush coating that integrates an antifouling bottom layer with a bactericidal top layer is facilely constructed via living photograft polymerization. Excellent resistance to bacterial attachment is correlated with the antifouling components, and good bactericidal activity is afforded by the bactericidal components, and therefore the hierarchical coating shows an excellent long-term antibacterial capability...
August 12, 2016: Colloids and Surfaces. B, Biointerfaces
Tahereh Zargar, Taghi Khayamian, Mohammad T Jafari
A selective thin-film microextraction based on aptamer immobilized on cellulose paper was used as a paper spray ionization source for ion mobility spectrometry (PSI-IMS), for the first time. In this method, the paper is not only used as an ionization source but also it is utilized for the selective extraction of analyte, based on immobilized aptamer. This combination integrates both sample preparation and analyte ionization in a Whatman paper. To that end, an appropriate sample introduction system with a novel design was constructed for the paper spray ionization source...
October 17, 2016: Journal of Pharmaceutical and Biomedical Analysis
Emel Sari Gokten, Nagihan Saday Duman, Nusret Soylu, Mehmet Erdem Uzun
It is known that children with mental and developmental problems are at risk of abuse and neglect. Attention-deficit/hyperactivity disorder is one of the most frequent neurodevelopmental disorders in children and adolescents. The purpose of this study is to examine whether children diagnosed with ADHD are under more risk in terms of child abuse and neglect compared to controls. In this case-control study, 104 children, who applied to Child and Adolescent Psychiatry Unit of Bursa Yuksek Ihtisas Training and Research Hospital between January and June 2015, were diagnosed with ADHD, and had no other psychiatric comorbidity except for disruptive behavior disorders, and 104 healthy children were compared...
October 19, 2016: Child Abuse & Neglect
Zhenyang Yu, Guohua Sun, Yanjun Liu, Daqiang Yin, Jing Zhang
Trans-generational effects are increasingly used to indicate long-term influences of environmental pollutants. However, such studies can be complex and yield inconclusive results. In this study, the trans-generational effects of sulfamethoxazole (SMX) on Caenorhabditis elegans on lifespan, reproduction and population growth were tested for 7 consecutive generations, which included gestating generation (F0), embryo-exposed generation (F1), germline-exposed generation (F2), the first non-exposed generation (F3) and the three following generations (F4-F6)...
October 19, 2016: Ecotoxicology and Environmental Safety
Nancy M Lee, Cevat Erisken, Thomas Iskratsch, Michael Sheetz, William N Levine, Helen H Lu
Physiologically relevant models of wound healing are essential for understanding the biology of connective tissue repair and healing. They can also be used to identify key cellular processes and matrix characteristics critical for the design of soft tissue grafts. Modeling the various stages of repair post tendon injury, polymer meshes of varying fiber diameter (nano-1 (390 nm) < nano-2 (740 nm) < micro (1420 nm)) were produced. Alignment was also introduced in the nano-2 group to model matrix undergoing biological healing rather than scar formation...
October 12, 2016: Biomaterials
Anastasia K Atabekova, Anna V Pankratenko, Svetlana S Makarova, Ekaterina A Lazareva, Robert A Owens, Andrey G Solovyev, Sergey Y Morozov
Human B-cell receptor-associated protein BAP31 (HsBAP31) is the endoplasmic reticulum-resident protein involved in protein sorting and transport as well as pro-apoptotic signaling. Plant orthologs of HsBAP31 termed 'plant BAP-like proteins' (PBL proteins) have thus far remained unstudied. Recently, the PBL protein from Nicotiana tabacum (NtPBL) was identified as an interactor of Nt-4/1, a plant protein known to interact with plant virus movement proteins and affect the long-distance transport of potato spindle tuber viroid (PSTVd) via the phloem...
October 19, 2016: Biochimie
Anita D'Anselmo, Daniele Marzoli, Alfredo Brancucci
The role of memory retention and attentional control on hemispheric asymmetry was investigated using a verbal dichotic listening paradigm, with the consonant-vowel syllables (/ba/,/da/,/ga/,/ka/,/pa/and/ta/), while manipulating the focus of attention and the time interval between stimulus and response. Attention was manipulated using three conditions: non-forced (NF), forced left (FL) and forced right (FR) attention. Memory involvement was varied using four delays (0, 1, 3 and 4 s) between stimulus presentation and response...
October 19, 2016: Hearing Research
Sylvia L R Wood, Jeanine M Rhemtulla, Oliver T Coomes
In the study of shifting cultivation systems, fallow duration is seen as the key determinant of vegetation and soil dynamics: long fallows renew soil fertility, biomass and biodiversity. However, long fallow systems are increasingly replaced around the world with short-medium fallow systems, and awareness is growing of the need to look across multiple (not just single) crop-fallow cycles to accurately understand observed soil and vegetation patterns. In a study from Peru that builds on field-level land-use histories (50+ years), we found that over multiple crop-fallow cycles, farmer's cropping practices mattered more than fallow duration for biodiversity and soil fertility...
October 22, 2016: Ecological Applications: a Publication of the Ecological Society of America
C Teljeur, P S Moran, S Walshe, S M Smith, F Cianci, L Murphy, P Harrington, M Ryan
AIMS: To systematically review the evidence on the costs and cost-effectiveness of self-management support interventions for people with diabetes. BACKGROUND: Self-management support is the provision of education and supportive interventions to increase patients' skills and confidence in managing their health problems, potentially leading to improvements in HbA1c levels in people with diabetes. METHODS: Randomized controlled trials, observational studies or economic modelling studies were eligible for inclusion in the review...
October 22, 2016: Diabetic Medicine: a Journal of the British Diabetic Association
Y H Cho, M E Craig, A S Januszewski, P Benitez-Aguirre, S Hing, A J Jenkins, K C Donaghue
AIM: To test the hypothesis that non-invasive skin autofluorescence, a measure of advanced glycation end products, would provide a surrogate measure of long-term glycaemia and be associated with early markers of microvascular complications in adolescents with Type 1 diabetes. METHODS: Forearm skin autofluorescence (arbitrary units) was measured in a cross-sectional study of 135 adolescents with Type 1 diabetes [mean ± sd age 15.6 ± 2.1 years, diabetes duration 8...
October 22, 2016: Diabetic Medicine: a Journal of the British Diabetic Association
Arash Momeni, Suhail K Kanchwala
BACKGROUND: Autologous breast reconstruction is associated with long-term patient satisfaction that is superior to implant-based approaches. Occasionally, however, patients who desire autologous reconstruction present with inadequate donor-site volume. A hybrid approach, combining free flap reconstruction with simultaneous implant placement, is a solution. We present our experience with the use of mesh for improved pocket control using this reconstructive modality. METHODS: A retrospective analysis of a prospectively maintained database of patients undergoing autologous breast reconstruction was performed...
October 22, 2016: Microsurgery
Dong Liu, Jie-Lu Zhou, Fashui Hong, Yu-Qing Zhang
Titanium dioxide nanoparticles (TiO2 NPs) are used in many fields, such as paints, medicine additives, food additives, sunscreens and agriculture. The aim of this study was to investgate the mechanism behind the formation of inflammation induced by TiO2 NPs. ICR mice were exposed to TiO2 NPs through intragastric administration at 2.5, 5 and 10 mg/kg body weight every day for 90 consecutive days. The experiment suggested that long-term exposure to TiO2 NPs resulted in an obvious inflammatory response in mice lung tissues, which led to a thickened alveoli septum, lung hyperaemia, and titanium accumulation...
October 22, 2016: Journal of Biomedical Materials Research. Part A
Anika Wranke, Beatriz Calle Serrano, Benjamin Heidrich, Janina Kirschner, Birgit Bremer, Patrick Lehmann, Svenja Hardtke, Katja Deterding, Kerstin Port, Max Westphal, Michael P Manns, Markus Cornberg, Heiner Wedemeyer
BACKGROUND: Hepatitis delta is the most severe form of viral hepatitis. Pegylated interferon alfa (PEG- IFNα) is effective in only 25-30% of patients and is associated with frequent side effects. The aim of this study was to analyze the clinical long-term outcome of hepatitis delta in relation to different antiviral treatment strategies. METHODS: We studied 136 anti-HDV-positive patients who were followed for at least 6 months in a retrospective single-center cohort (mean time of follow up 5...
October 22, 2016: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
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