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Maria Jose Escalante, Jose Maria Ceriani-Cernadas, Ivonne D'Apremont, Aldo Bancalari, Veronica Webb, Larisa Genes, Luis Villarroel, Elizabeth Munoz, Jose L Tapia
OBJECTIVE: The main aim is to determine the incidence and associated factors of late onset sepsis (LOS) in very low birth weight (VLBW) infants (500-1500 g), from the NEOCOSUR Network during years 2001-2013. Secondary objectives are to describe the microbiology of the first and second episode of LOS and to study the association between catheter dwell time and LOS. PATIENTS AND METHODS: Demographic information and outcome data are prospectively and routinely collected across the Network using predefined diagnostic criteria and online data entry...
March 14, 2018: Pediatric Infectious Disease Journal
Daniele Giuffrida, Mariosimone Zoccali, Adriana Arigò, Francesco Cacciola, Coralia Osorio Roa, Paola Dugo, Luigi Mondello
An on-line method based on the coupling of supercritical fluid extraction and supercritical fluid chromatography with triple quadrupole mass spectrometry detection (SFESFCQqQ/MS) for the native carotenoids characterization and apocarotenoids detection in yellow tamarillo was developed for the first time; this is the first work reporting the application of this methodology for the apocarotenoids analysis in any matrix. An off-line liquid extraction (LE) and analysis by LC-PDA-MS, using both a conventional C30 (3 μm I...
March 17, 2018: Archives of Biochemistry and Biophysics
Wen-Ping Huang, Ting Tan, Zhi-Feng Li, Hui OuYang, Xu Xu, Bin Zhou, Yu-Lin Feng
The Chimonanthus nitens Oliv. leaf (CNOL). is a widely used traditional Chinese medicine (TCM) used for treating colds and influenza. In the present study, a comprehensive strategy integrating multiple chromatographic analysis and chemometric methods was firstly proposed for structural characterization and discrimination of CNOL from different geographical origins. It consists of three steps: Firstly, the ultra-high-performance liquid chromatography quadrupole time-of-flight tandem mass spectrometry (UHPLC-QTOF-MS/MS) method was applied for comprehensive profiling of characterization constituents in CNOL by high-resolution diagnostic product ions/neutral loss filtering, and a total of 40 constituents were identified...
February 10, 2018: Journal of Pharmaceutical and Biomedical Analysis
Dongsheng Zhang, Weixiang Li, Zhanfang Ma
An improved sandwich-type electrochemical immunosensor based on the novel signal amplification strategy was developed. Methylene blue (MB) loaded mesoporous silica nanoparticles (MSN) with polydopamine coating (PDA) were employed as "smart" labels, while phytic acid doped polyaniline hydrogel (PANI) with high adsorption capacity was acted as substrate. In this strategy, amount of redox species (MB) encapsulated in MSN by PDA will be released under acidic condition and then absorbed stably by PANI...
March 13, 2018: Biosensors & Bioelectronics
V Damarla, D Dobrosotskaya, F Siddiqui, I Wollner, M Raoufi, J Li, D Kwon, G Khan
No abstract text is available yet for this article.
March 2018: European Journal of Cancer
W P de Boode, M Kluckow, P J McNamara, S Gupta
Neonatologist-performed echocardiography (NPE) is an indispensable tool in the haemodynamic management of critically ill newborn infants. NPE is used to facilitate timely diagnosis of a patent ductus arteriosus (PDA) in preterm infants and to assess its haemodynamic significance. Before treatment is considered, it is obligatory to confirm structural cardiac normality. Importantly, NPE offers the ability to guide therapeutic interventions, allowing an individualised haemodynamic management approach to the PDA...
March 7, 2018: Seminars in Fetal & Neonatal Medicine
François Godart, Ali Houeijeh, Olivia Domanski, Marie-Paule Guillaume, Mélanie Brard, Hugues Lucron
AIM: To describe our initial experience with the Occlutech Duct Occluder (ODO) for percutaneous closure of patent ductus arteriosus (PDA). METHODS: Retrospective review of patients undergoing transcatheter PDA closure with the ODO in 2 academic centers. RESULTS: From April 2013 to September 2017, 42 patients underwent PDA closure. Median age at implantation was 34 months (range 4 months-68 years) and median weight was 12 kg (range 4...
March 14, 2018: International Journal of Cardiology
Luca Scotti, Salvatore Genovese, Tonino Bucciarelli, Filippo Martini, Francesco Epifano, Serena Fiorito, Francesca Preziuso, Vito Alessandro Taddeo
An efficient analytical strategy based on different extraction methods of biologically active naturally occurring oxyprenylated umbelliferone and ferulic acid derivatives 7-isopentenyloxycoumarin, auraptene, umbelliprenin, boropinic acid, and 4'-geranyloxyferulic acid and quantification by UHPLC with spectrophotometric (UV/Vis) detection from Tea tree oil is reported. Absorption of the pure oil on Al2 O3 (Brockmann activity II) prior washing the resulting solid with MeOH and treatment of this latter with CH2 Cl2 resulted the best extraction methodology in terms of yields of oxyprenylated secondary metabolites...
March 10, 2018: Journal of Pharmaceutical and Biomedical Analysis
Catarina Guerreiro Pereira, Luísa Barreira, Sebastiaan Bijttebier, Luc Pieters, Cátia Marques, Tamára F Santos, Maria João Rodrigues, João Varela, Luísa Custódio
This work explored the biotechnological potential of the medicinal halophyte Artemisia campestris subsp. maritima (dune wormwood) as a source of health promoting commodities. For that purpose, infusions, decoctions and tinctures were prepared from roots and aerial-organs and evaluated for in vitro antioxidant, anti-diabetic and tyrosinase-inhibitory potential, and also for polyphenolic and mineral contents and toxicity. The dune wormwood extracts had high polyphenolic content and several phenolics were identified by ultra-high performance liquid chromatography-photodiode array-mass-spectrometry (UHPLC-PDA-MS)...
March 16, 2018: Scientific Reports
Menglong Liu, Danfeng He, Tao Yang, Wei Liu, Li Mao, Yang Zhu, Jun Wu, Gaoxing Luo, Jun Deng
BACKGROUND: Silver and photothermal therapy (PTT) have been widely used for eradicating the drug-resistant bacteria. However, the risks of excess of silver for humans and the low efficiency of PTT still limit their in vivo therapeutic application. Integration of two distinctive bactericides into one entity is a promising platform to improve the efficiency of antimicrobial agents. RESULTS: In this study, a chemo-photothermal therapeutic platform based on polydopamine (PDA)-coated gold nanorods (GNRs) was developed...
March 16, 2018: Journal of Nanobiotechnology
Radosław Mrówczyński, Artur Jędrzak, Kosma Szutkowski, Bartosz F Grześkowiak, Emerson Coy, Roksana Markiewicz, Teofil Jesionowski, Stefan Jurga
Polydopamine (PDA)-coated magnetic nanoparticles functionalized with mono-6-thio-β-cyclodextrin (SH-βCD) were obtained and characterized by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), Nuclear and Magnetic Resonance Imaging (NMR and MRI), and doxorubicin (DOXO)-loading experiments. The liver cancer cellular internalization of DOXO-loaded nanoparticles was investigated by confocal imaging microscopy. Synthesized nanomaterials bearing a chemotherapeutic drug and a layer of polydopamine capable of absorbing near-infrared light show high performance in the combined chemo- and photothermal therapy (CT-PTT) of liver cancer due to the synergistic effect of both modalities as demonstrated in vitro...
March 16, 2018: Nanomaterials
Jianfeng Zhang, Qunling Fang, Jinyu Duan, Hongmei Xu, Hua-Jian Xu, Shouhu Xuan
This work reports a novel Fe3O4@polydopamine-Au-polydopamine core/shell nanocomposite towards magnetically separable nanocatalyst. Because the polydopamine (PDA) layers sandwiched Au nanocrystals were prepared by a layer-by-layer method, the content of Au could be controlled by varying the Au shell number (such as burger-like Fe3O4@PDA/Au/PDA/Au/PDA). The Fe3O4@PDA/Au/PDA exhibited excellent catalytic activity on reducing the p-Nitrophenol since the substrate could penetrate the PDA shell. Owing to the protection of PDA shell, the Fe3O4@PDA/Au/PDA presented higher cyclability than the Fe3O4@PDA/Au...
March 16, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
Varinder Singh, Pawan Krishan, Richa Shri
Oxidative stress is strongly implicated in the pathogenesis of stroke. Strategies using antioxidants to improve neurological functions after stroke have, thus, gained significant attention. Ocimum basilicum L. is used traditionally to treat CNS disorders. Its antioxidant capacity is well established. Our laboratory has reported protective effects of pre-treatment with O. basilicum in experimental stroke, but its curative (post-treatment) effects in ischemic stroke have not been documented. Hence, the present study was aimed to evaluate the effect of O...
March 15, 2018: Metabolic Brain Disease
John Mattila, Mike Clark, Shengjiang Liu, John Pieracci, Thomas Gervais, Eileen Wilson, Olga Galperina, Xinfang Li, David Roush, Konstantin Zoeller, Helene Brough, Christelle Simpson-Platre
Ref: Retrospective Evaluation of Low-pH Viral Inactivation and Viral Filtration Data from a Multiple Company Collaboration John Mattila, Mike Clark, Shengjiang Liu, et al. PDA J Pharm Sci and Tech 2016, 70 293-299
Access the most recent version at doi:10.5731/pdajpst.2016.006478 Due to a mathematical error we would like to submit an erratum for figure 6 p298.
March 15, 2018: PDA Journal of Pharmaceutical Science and Technology
Mahesh Raj Nepal, Rajina Shakya, Mi Jeong Kang, Tae Cheon Jeong
Among many of the validated methods for testing skin sensitization, direct peptide reactivity assay (DPRA) employs no cells or animals. Although no immune cells are involved in this assay, it reliably predicts the skin sensitization potential of a chemical in chemico. Herein, a new method was developed using endogenous small-molecular-weight compounds, cysteamine and glutathione, rather than synthetic peptides, to differentiate skin sensitizers from non-sensitizers with an accuracy as high as DPRA. The percent depletion of cysteamine and glutathione by test chemicals was measured by an HPLC equipped with a PDA detector...
March 12, 2018: Toxicology Letters
Tyler P Robin, Timothy S Sannes, Feng-Ming Spring Kong, Francoise Mornex, Fred R Hirsch, Chad G Rusthoven, Laurie E Gaspar
INTRODUCTION: Guidelines have recommended prophylactic cranial irradiation (PCI) for patients with limited-stage small-cell lung cancer with at least a partial response after thoracic chemoradiation. However, the survival advantage has been small and was observed in an era before magnetic resonance imaging and surveillance. Neurotoxicity also remains a concern, especially in older adults. Thus, patients have a complex value-laden decision to make. We sought to better understand the role physicians play in patient decision making and introduce a patient decision aid (PDA) to potentially facilitate these discussions...
February 17, 2018: Clinical Lung Cancer
Christopher J Halbrook, Marina Pasca di Magliano, Costas A Lyssiotis
In the event of an injury, normal tissues exit quiescent homeostasis and rapidly engage a complex stromal and immune program. These tissue repair responses are hijacked and become dysregulated in carcinogenesis to form a growth supportive tumor microenvironment. In pancreatic ductal adenocarcinoma (PDA), which remains one of the deadliest major cancers, the microenvironment is a key driver of tumor maintenance that impedes many avenues of therapy. In this review, we outline recent efforts made to uncover the microenvironmental crosstalk mechanisms which support pancreatic cancer cells, and detail the strategies which have been undertaken to help overcome these barriers...
March 15, 2018: American Journal of Physiology. Gastrointestinal and Liver Physiology
Alireza Sadeghnia, Behzad Koorang Beheshti, Majid Mohammadizadeh
Background: Considering all the latest achievements in neonatal respiratory care, bronchopulmonary dysplasia (BPD) is still among the most prevalent morbidity causes in premature infants. Involvement in this process results in longer period of hospitalization for the newborn and in the long run makes the living conditions more difficult. Taking the multifactorial pathogenesis into account, approaches to tackle chronic lung disease (CLD) are mainly focused on interventions and prevention procedures...
2018: International Journal of Preventive Medicine
Sigrid Baumgartner, Monika Olischar, Martin Wald, Tobias Werther, Angelika Berger, Thomas Waldhör, Georg Fischer, Ulrike Salzer-Muhar
BACKGROUND: Postnatally, the immature left ventricle (LV) is subjected to high systemic afterload. Hypothesizing that LV pumping would change during transition-adaptation we analyzed the LV in preterm infants (GA≤32+6), clinically stable or with a hemodynamically significant PDA (hPDA) by applying a pump model. METHODS: Pumping was characterized by EA (effective arterial elastance, reflecting afterload), EES (endsystolic LV elastance, reflecting contractility), EA /EES -coupling ratios, descriptive EA :EES relations and EA /EES -graphs...
March 14, 2018: Pediatric Research
Robert A Bailey, Alicia C Shillington, Qing Harshaw, Martha M Funnell, Jeffrey VanWingen, Nananda Col
INTRODUCTION: Failure to intensify treatment for type 2 diabetes mellitus (T2DM) when indicated, or clinical inertia, is a major obstacle to achieving optimal glucose control. This study investigates the impact of a values-focused patient decision aid (PDA) for T2DM antihyperglycemic agent intensification on patient values related to domains important in decision-making and preferred treatments. METHODS: Patients with poorly controlled T2DM who were taking a metformin-containing regimen were recruited through physicians to access a PDA presenting evidence-based information on T2DM and antihyperglycemic agent class options...
March 13, 2018: Diabetes Therapy: Research, Treatment and Education of Diabetes and related Disorders
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