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Dawna Lewis, Kendra Schmid, Samantha O'Leary, Jody Spalding, Elizabeth Heinrichs-Graham, Robin High
Purpose: This study examined the effects of stimulus type and hearing status on speech recognition and listening effort in children with normal hearing (NH) and children with mild bilateral hearing loss (MBHL) or unilateral hearing loss (UHL). Method: Children (5-12 years of age) with NH (Experiment 1) and children (8-12 years of age) with MBHL, UHL, or NH (Experiment 2) performed consonant identification and word and sentence recognition in background noise. Percentage correct performance and verbal response time (VRT) were assessed (onset time, total duration)...
October 25, 2016: Journal of Speech, Language, and Hearing Research: JSLHR
Cinthia C Stempin, Claudia C Motrán, María P Aoki, Cristian R Falcón, Fabio M Cerbán, Laura Cervi
Macrophage plasticity is critical for controlling inflammation including those produced by helminth infections, where alternatively activated macrophages (AAM) are accumulated in tissues. AAM expressing the co-inhibitory molecule programmed death ligand 2 (PD-L2), which is capable of binding programmed death 1 (PD-1) expressed on activated T cells, have been demonstrated in different parasitic infections. However, the role of PD-L2 during F. hepatica infection has not yet been explored. We observed that F. hepatica infection or a F...
October 21, 2016: Oncotarget
Thomas Tischer, Melina Schuh
Mammalian oocytes are stored in the ovary, where they are arrested in prophase for prolonged periods. The mechanisms that abrogate the prophase arrest in mammalian oocytes and reinitiate meiosis are not well understood. Here, we identify and characterize an essential pathway for the resumption of meiosis that relies on the protein phosphatase DUSP7. DUSP7-depleted oocytes either fail to resume meiosis or resume meiosis with a significant delay. In the absence of DUSP7, Cdk1/CycB activity drops below the critical level required to reinitiate meiosis, precluding or delaying nuclear envelope breakdown...
October 25, 2016: Cell Reports
Kathia Sandoval, Yan Ding, Piero Gardinali
Comprehensive characterization of exposure media used in toxicology studies is still an area of significant divergence when evaluating potential oil spill impacts. When preparing exposure media used for toxicology testing, small variations in simple parameters such as mixing energy, oil type and loading can significantly affect the concentration of the oil components to which test organisms are exposed. The key goal of this study was compare and contrast the physical and chemical compositions of oil water mixtures prepared using fresh and weathered Macondo-related oils under different conditions of mixing and in the presence/absence of chemical dispersants...
October 23, 2016: Science of the Total Environment
Zhengrong Yang, Qingxian Zhou, Leo Mok, Anukriti Singh, Douglas J Swartz, Ina L Urbatsch, Christie G Brouillette
Structural changes in mouse P-glycoprotein (Pgp) induced by thermal unfolding were studied by differential scanning calorimetry (DSC), circular dichroism and fluorescence spectroscopy to gain insight into the solution conformation(s) of this ABC transporter that may not be apparent from current crystal structures. DSC of reconstituted Pgp showed two thermal unfolding transitions in the absence of MgATP, suggesting that each transition involved the cooperative unfolding of two or more interacting structural domains...
October 23, 2016: Biochimica et Biophysica Acta
Sangyun Lee, Heather B Mayes, Jessica M J Swanson, Gregory A Voth
The ClC family of transmembrane proteins functions throughout nature to control the transport of Cl- ions across biological membranes. ClC-ec1 from Escherichia coli is an antiporter, coupling the transport of Cl- and H+ ions in opposite directions and driven by the concentration gradients of the ions. Despite keen interest in this protein, the molecular mechanism of the Cl-/H+ coupling has not been fully elucidated. Here, we have used multiscale simulation to help identify the essential mechanism of the Cl-/H+ coupling...
October 26, 2016: Journal of the American Chemical Society
Enikö Kövari, François R Herrmann, Gabriel Gold, Patrick R Hof, Andreas Charidimou
AIMS: Cortical microinfarcts (CMI) are frequently observed in the ageing brain independent of cognitive decline, but their etiology is not fully elucidated. To examine the potential role of different vessel pathologies, including cerebral amyloid angiopathy (CAA), arteriolosclerosis-hyalinosis, and thromboembolism in the development of CMI, we examined 80 autopsy cases with more than one CMI on routine neuropathological examination. METHODS: Pial and intracortical vessels around CMI were assessed for their integrity with hematoxylin-eosin staining and antibodies against amyloid-β protein and fibrinogen using a semiquantitative 4-level rating scale (absent to severe) in the hippocampus, and the frontal, temporal, and occipital cortex...
October 26, 2016: Neuropathology and Applied Neurobiology
Maiara Bordignon, Maria Inês Monteiro
Objective: to reflect on the consequences of workplace violence experienced by nursing professionals. Methods: this is a reflection paper based on recent publications related to the subject, particularly researches carried out in Brazil and in other countries. Results: exposure to workplace violence has been associated with health problems in nursing professionals, which may be physical damage, emotional manifestations, and psychic disorders...
September 2016: Revista Brasileira de Enfermagem
Tomas Maria Perez-Porcuna, Hélio Doyle Pereira-da-Silva, Carlos Ascaso, Adriana Malheiro, Samira Bührer, Flor Martinez-Espinosa, Rosa Abellana
INTRODUCTION: For adequate disease control the World Health Organization has proposed the diagnosis and treatment of latent tuberculous infection (LTBI) in groups of risk of developing the disease such as children. There is no gold standard (GS) test for the diagnosis of LTBI. The objective of this study was to estimate the prevalence of LTBI in young children in contact with a household case of tuberculosis (TB-HCC) and determine the accuracy and precision of the Tuberculin Skin Test (TST) and QuantiFERON-TB Gold in-tube (QFT) used in the absence of a GS...
2016: PloS One
Renzo Sebastián Adilardi, Andrés Alejandro Ojanguren-Affilastro, Liliana María Mola
Scorpions of the genus Tityus show holokinetic chromosomes, achiasmatic male meiosis and an absence of heteromorphic sex chromosomes, like all Buthidae. In this work, we analysed the meiotic behaviour and chromosome rearrangements of a population of the scorpion Tityus confluens, characterising the cytotypes of males, females and embryos with different cytogenetic techniques. This revealed that all the females were structural homozygotes, while all the males were structural heterozygotes for different chromosome rearrangements...
2016: PloS One
Rosario Mete
In the Lazio Region (Italy), health districts were established with Regional Law n. 18 of 1994. In the absence of specific regional recommendations, this was done by taking into account local situations and the needs of individual local health authorities, resulting in a network of markedly heterogeneous health districts. This serious situation has never been dealt with in a concrete manner and no measures have been undertaken over the years to correct it. The Regional Association of healthcare directors, managers and workers, established in 2001, has performed a number of studies to compare corporate acts and healthcare services provided by individual health units; these have confirmed the existence of varied organizational structures...
July 2016: Igiene e Sanità Pubblica
Samuel Stolpe, Michel A Kroes, Neil Webb, Tami Wisniewski
BACKGROUND: Diabetes care is associated with a considerable burden to the health care system in the United States, and measuring the quality of health care is an important development goal of the Department of Health and Human Services and the Centers for Medicare & Medicaid Services. Diabetes is a priority disease within the National Quality Strategy and should therefore remain a focus in the measurement of health care quality. Despite the importance of measuring quality in diabetes care management, no quality measure is currently associated with adherence to insulin treatment, and measuring adherence to insulin is known to be complicated...
November 2016: Journal of Managed Care & Specialty Pharmacy
Lixin Li, Peipei Liu, Yijin Su, Hanmin Huang
Thanks to the facile imine-enamine tautomerization, the β,γ-unsaturated hydrazones have been successfully utilized as surrogates of aminodienes for realizing the Pd-catalyzed tandem aminomethylamination/aromatization reaction with aminals via C-N bond activation. This direct and operationally simple protocol provides a fundamentally novel strategy to synthesize aromatic heterocycles from alkenes in the absence of external oxidant and base. Mechanistic studies suggested that aminal not only functioned as an aminomethyl source but also acted as formal oxidant and inner base to promote the aromatization...
October 26, 2016: Organic Letters
Timothy J Brickman, Ryan J Suhadolc, Pamela J McKelvey, Sandra K Armstrong
NAD is produced via de novo biosynthesis pathways and by salvage or recycling routes. The classical Bordetella bacterial species are known to be auxotrophic for nicotinamide or nicotinic acid. This study confirmed that Bordetella bronchiseptica, Bordetella pertussis, and Bordetella parapertussis have the recycling/salvage pathway genes pncA and pncB, for use of nicotinamide or nicotinic acid, respectively, for NAD synthesis. Although these Bordetellae lack the nadA and nadB genes needed for de novo NAD biosynthesis, remarkably, they have one de novo pathway gene, nadC, encoding quinolinate phosphoribosyltransferase...
October 26, 2016: Molecular Microbiology
S Mahesh, V Lekha, John Mathew Manipadam, A Venugopal, H Ramesh
The aim of this study is to analyze the outcomes of patients with chronic pancreatitis who underwent the Frey procedure and who had a histologic evidence of adenocarcinoma in the cored out specimen.The type of analysis is retrospective. Out of 523 patients who underwent Frey procedure for chronic pancreatitis, seven (five males and two females; age range 42 to 54 years) had histologically proven adenocarcinoma. In the first four cases, intraoperative frozen section was not done. The diagnosis was made on routine histopathology and only one out of four could undergo attempted curative therapy...
October 26, 2016: Indian Journal of Gastroenterology: Official Journal of the Indian Society of Gastroenterology
Salem A Beshyah, Ibrahim H Sherif, Farida Chentli, Amir Hamrahian, Aly B Khalil, Hussein Raef, Mohamed El-Fikki, Selim Jambart
BACKGROUND: Prolactinomas are the commonest functional tumors of the pituitary gland. There are still controversies regarding medical therapy in specific clinical situations. Patients may be managed by different specialists in the Middle East and North Africa (MENA) region and no data exist on patterns of clinical management. OBJECTIVES: To ascertain the diagnostic and therapeutic approaches to prolactinomas among relevant professionals from the MENA region. METHODS: An online survey of a large sample of physicians was conducted...
October 25, 2016: Pituitary
Chao Zhang, Chendan Wang, Jianbo Ren, Xiangjie Guo, Keming Yun
Glutamate is not only a neurotransmitter but also an important neurotoxin in central nervous system (CNS). Chronic elevation of glutamate induces both neuronal and glial cell apoptosis. However, its effect on astrocytes is complex and still remains unclear. In this study, we investigated whether morphine, a common opioid ligand, could affect glutamate-induced apoptosis in astrocytes. Primary cultured astrocytes were incubated with glutamate in the presence/absence of morphine. It was found that morphine could reduce glutamate-induced apoptosis of astrocytes...
October 24, 2016: International Journal of Molecular Sciences
Brian McKenna, Jane Oakes, Niki Fourniotis, Nigel Toomey, Trentham Furness
A recovery-oriented model of care has become the major focus of mental health service delivery in the state of Victoria, Australia. However, there is a total absence of knowledge of recovery-oriented mental health practice in community care units (CCUs). Therefore, the aims of this exploratory study were to: (a) describe what aspects of the current model of care fit within the domains of recovery; and (b) describe the pragmatic processes that staff use to mold their care within the domains of recovery. Twenty-one key stakeholders provided informed voluntary consent to participate in one-to-one interviews...
October 25, 2016: Journal of Forensic Nursing
Parth Makker, Yuichi J Shimada, Deepika Misra, Yumiko Kanei
Therapeutic hypothermia is used in select patients after out-of-hospital cardiac arrest (OHCA) to improve neurologic outcome. Rebound hyperthermia (RH) is commonly observed post-treatment. Previous studies analyzing the association of RH with clinical outcome have reported conflicting results. The purpose of this study is to examine the impact of RH after completion of therapeutic hypothermia in patients postcardiac arrest. We analyzed a retrospective cohort from our institution. All adults who underwent therapeutic hypothermia post-OHCA were divided into two cohorts depending on the presence/absence of fever (T > 38°C) within 24 hours of completing hypothermia protocol...
October 26, 2016: Therapeutic Hypothermia and Temperature Management
T Afsar, S Jahan, S Razak, A Almajwal, M Abulmeaty, H Wazir, A Majeed
The functional antagonism between obestatin and ghrelin in testis is under investigated. We investigated the ability of obestatin to counteract the inhibitory effect of ghrelin on basal and stimulated testosterone (T) secretion in vitro. Testicular strips from adult rats were incubated with 10 ng/ml and 100 ng/ml of obestatin alone, ghrelin alone and obestatin + ghrelin. Obestatin modulation of stimulated T secretion was evaluated by incubation of testicular samples with 10 ng/ml and 100 ng/ml obestatin, ghrelin and obestatin+ ghrelin in the absence and presence of 10 IU of human chorionic gonadotrophin (hCG)...
October 26, 2016: Physiological Research
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