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Sapan H Shah, Brian E Schwartz, Aaron R Schwartz, Benjamin A Goldberg, Samuel J Chmell
The rate of total knee arthroplasty (TKA) utilization in younger patients (< 65 years old) is increasing. Little is known regarding demographics and in-hospital outcomes in this population. The National Hospital Discharge Survey (NHDS) database was searched using International Classification of Diseases, Ninth Revision (ICD-9) procedure codes for patients admitted to U.S. hospitals for unilateral primary TKA between 2001 and 2010. Patients were separated into young (< 65 years of age) and senior cohorts (≥ 65 years of age)...
October 24, 2016: Journal of Knee Surgery
Brittany N Flores, Mark E Dulchavsky, Amy Krans, Michael R Sawaya, Henry L Paulson, Peter K Todd, Sami J Barmada, Magdalena I Ivanova
Hexanucleotide repeat expansions in C9orf72 are the most common inherited cause of amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD). The expansions elicit toxicity in part through repeat-associated non-AUG (RAN) translation of the intronic (GGGGCC)n sequence into dipeptide repeat-containing proteins (DPRs). Little is known, however, about the structural characteristics and aggregation propensities of the dipeptide units comprising DPRs. To address this question, we synthesized dipeptide units corresponding to the three sense-strand RAN translation products, analyzed their structures by circular dichroism, electron microscopy and dye binding assays, and assessed their relative toxicity when applied to primary cortical neurons...
2016: PloS One
Anthony A Iwuafor, Folasade T Ogunsola, Rita O Oladele, Oyin O Oduyebo, Ibironke Desalu, Chukwudi C Egwuatu, Agwu U Nnachi, Comfort N Akujobi, Ita O Ita, Godwin I Ogban
BACKGROUND: Infections are common complications in critically ill patients with associated significant morbidity and mortality. AIM: This study determined the prevalence, risk factors, clinical outcome and microbiological profile of hospital-acquired infections in the intensive care unit of a Nigerian tertiary hospital. MATERIALS AND METHODS: This was a prospective cohort study, patients were recruited and followed up between September 2011 and July 2012 until they were either discharged from the ICU or died...
2016: PloS One
Xiaobing Zhou, Hilda Smith, Ana Giraldo Silva, Jayne Belnap, Ferran Garcia-Pichel
N2 fixation and ammonia oxidation (AO) are the two most important processes in the nitrogen (N) cycle of biological soil crusts (BSCs). We studied the short-term response of acetylene reduction assay (ARA) rates, an indicator of potential N2 fixation, and AO rates to temperature (T, -5°C to 35°C) in BSC of different successional stages along the BSC ecological succession and geographic origin (hot Chihuahuan and cooler Great Basin deserts). ARA in all BSCs increased with T until saturation occurred between 15 and 20°C, and declined at 30-35°C...
2016: PloS One
Elham Aslankoohi, Beatriz Herrera-Malaver, Mohammad Naser Rezaei, Jan Steensels, Christophe M Courtin, Kevin J Verstrepen
Saccharomyces cerevisiae is routinely used yeast in food fermentations because it combines several key traits, including fermentation efficiency and production of desirable flavors. However, the dominance of S. cerevisiae in industrial fermentations limits the diversity in the aroma profiles of the end products. Hence, there is a growing interest in non-conventional yeast strains that can help generate the diversity and complexity desired in today's diversified and consumer-driven markets. Here, we selected a set of non-conventional yeast strains to examine their potential for bread fermentation...
2016: PloS One
Robert Froud, Shilpa Patel, Dévan Rajendran, Philip Bright, Tom Bjørkli, Rachelle Buchbinder, Sandra Eldridge, Martin Underwood
BACKGROUND: Increasing patient-reported outcome measures in the 1980s and 1990s led to the development of recommendations at the turn of the millennium for standardising outcome measures in non-specific low back pain (LBP) trials. Whether these recommendations impacted use is unclear. Previous work has examined citation counts, but actual use and change over time, has not been explored. Since 2011, there has been some consensus on the optimal methods for reporting back pain trial outcomes...
2016: PloS One
Karan Dua, Timothy P Lancaster, Joshua M Abzug
BACKGROUND: Objective sensory testing is a critical component of the physical examination in children as they may be unable to communicate whether or not numbness is present. The purpose of this study was to determine at what age objective sensory tests could reliably be performed. METHODS: Normal, uninjured participants aged 2 to 17 years were enrolled in the study. Monofilament and static/moving 2-point discrimination tests were performed bilaterally assessing the median, ulnar, and radial nerves...
October 21, 2016: Journal of Pediatric Orthopedics
Joel G DeKoven, Erin M Warshaw, Donald V Belsito, Denis Sasseville, Howard I Maibach, James S Taylor, James G Marks, Joseph F Fowler, C G Toby Mathias, Vince A DeLeo, Melanie D Pratt, Matthew J Zirwas, Kathryn A Zug
BACKGROUND: Patch testing is the most important diagnostic tool for the assessment of allergic contact dermatitis. OBJECTIVE: This study documents the North American Contact Dermatitis Group (NACDG) patch testing results from January 1, 2013, to December 31, 2014. METHODS: At 13 centers in North America, patients were tested in a standardized manner with a screening series of 70 allergens. Data were manually verified and entered into a central database...
October 21, 2016: Dermatitis
Alexis Klengel, Patrick Stumpp, Steffen Klengel, Ina Böttger, Nadja Rönisch, Thomas Kahn
Purpose To compare single-shot echo-planar diffusion-weighted imaging-derived apparent diffusion coefficient (ADC) maps with fat-saturated (FS) proton density (PD)-weighted turbo spin-echo (TSE) imaging in the detection of bone marrow lesions (BMLs) after knee trauma. Materials and Methods Institutional review board approval was obtained from Leipzig University. Written informed consent was waived. Three radiologists retrospectively re-examined 97 consecutive patients with reported knee trauma who underwent 1...
October 24, 2016: Radiology
Pradeep Mugunthan, Kevin T Russell, Binglei Gong, Michael J Riley, Arthur Chin, Blair G McDonald, Linda J Eastcott
There is an identified need for fully representing groundwater-surface water transition zone (i.e., the sediment zone that connects groundwater and surface water) processes in modeling fate and transport of contaminants to assist with management of contaminated sediments. Most existing groundwater and surface water fate and transport models are not dynamically linked and do not consider transition zone processes such as bioturbation and deposition and erosion of sediments. An interface module is developed herein to holistically simulate the fate and transport by coupling two commonly used models, Environmental Fluid Dynamics Code (EFDC) and SEAWAT, to simulate surface water and groundwater hydrodynamics, while providing an enhanced representation of the processes in the transition zone...
October 24, 2016: Ground Water
L Soylu, O U Aydin, S Ozbas, B Bilezikci, S Ilgan, A Gursoy, S Kocak
OBJECTIVE: Papillary thyroid carcinoma (PTC) may often appear as multifocal disease. Few studies demonstrated a higher rate of central compartment lymph node metastasis (CCLNM) in multifocal PTC patients. Therefore, the effect of different histological subtypes of multifocal PTC on CCLNM is another subject for further examination. The aim of the present study is to evaluate the rate of central lymph node positivity in multifocal PTC as compared to unifocal disease, and to identify the role of different histologic subtypes of PTC on central neck lymph node positivity...
October 2016: European Review for Medical and Pharmacological Sciences
Verónica Rubio González, Susana Redondo Martín, Gema Ruíz López Del Prado, Mª Fe Muñoz Moreno, Alexander Velázquez Miranda
OBJECTIVE: Household Survey on Alcohol and Other Drugs shows the progressive increase in the consumption of hypnotics, alone or in combination with other substances. The aim of the research was to obtain information about the consumption of hypnotics and sedatives in population of Castilla y León treated in emergency medical services of four monitored hospitals between 2009-2013, describing clinical and epidemiological characteristics of the emergencies and what drugs were consumed, to provide information for future interventions...
October 24, 2016: Revista Española de Salud Pública
Ellen Games, Marina Guerreiro, Fernanda R Santana, Nathalia M Pinheiro, Emerson A de Oliveira, Fernanda D T Q S Lopes, Clarice R Olivo, Iolanda F L C Tibério, Mílton A Martins, João Henrique G Lago, Carla M Prado
BACKGROUND: Chronic obstructive pulmonary disease (COPD) is characterized by irreversible airflow obstruction and inflammation. Natural products, such as monoterpenes, displayed anti-inflammatory and anti-oxidant activities and can be used as a source of new compounds to COPD treatment. Our aim was to evaluate, in an elastase-induced pulmonary emphysema in mice, the effects of and underlying mechanisms of three related natural monoterpenes (p-cymene, carvacrol and thymol) isolated from essential oil from leaves Lippia sidoides Cham...
October 20, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Mohammad Z Hossain, Emily Shea, Mohsen Daneshtalab, John T Weber
Various species of berries have been reported to contain several polyphenolic compounds, such as anthocyanins and flavonols, which are known to possess high antioxidant activity and may be beneficial for human health. To our knowledge, a thorough chemical analysis of polyphenolics in species of these plants native to Newfoundland, Canada has not been conducted. The primary objective of this study was to determine the polyphenolic compounds present in commercial extracts from Newfoundland berries, which included blueberries (V...
October 19, 2016: Antioxidants (Basel, Switzerland)
Alfred Chikweto, Ravindra N Sharma, Keshaw P Tiwari, Shiv K Verma, Rafael Calero-Bernal, Tiantian Jiang, Chunlei Su, Oliver C Kwok, Jitender P Dubey
The objectives of the present cross sectional study were to isolate and genotype Toxoplasma gondii in free-range chickens from Grenada, West Indies. Using the modified agglutination test, antibodies to T. gondii were found in 39 (26.9%) of 145 free-range chickens with titers of 25 in 7chickens; 50 in 6 chickens; 100 in 2 chickens; 200 or higher in 24 chickens. The hearts of the 39 seropositive chickens were bioassayed in mice; viable T. gondii was isolated from 20 and further propagated in cell culture. Genotyping of T...
October 24, 2016: Journal of Parasitology
A Szeremeta, A Jura-Półtorak, K Komosińska-Vassev, A Zoń-Giebel, D Kapołka, K Olczyk
OBJECTIVES: To assess the association between plasma levels of the insulin-like growth factor (IGF) system including IGF-1, IGF-binding proteins (IGFBPs) including IGFBP-1, total (t-)IGFBP-3 and functional (f-)IGFBP-3, and the carboxyterminal propeptide of type I procollagen (PICP) in pre- and postmenopausal women with rheumatoid arthritis (RA). METHOD: Plasma concentrations of IGF-1, IGFBP-1, t-IGFBP-3, f-IGFBP-3, and PICP were measured by immunoassay. RESULTS: No significant difference was observed in plasma IGF-1 levels between pre- and postmenopausal subjects...
October 24, 2016: Scandinavian Journal of Rheumatology
Danilo T Perez-Rivera, Veronica L Torres-Torres, Abraham E Torres-Colon, Maytee Cruz-Aponte
Diabetes mellitus is a disease characterized by a range of metabolic complications involving an individual's blood glucose levels, and its main regulator, insulin. These complications can vary largely from person to person depending on their current biophysical state. Biomedical research day-by-day makes strides to impact the lives of patients of a variety of diseases, including diabetes. One large stride that is being made is the generation of techniques to assist physicians to ``personalize medicine''. From available physiological data, biological understanding of the system, and dimensional analysis, a differential equation-based mathematical model was built in a sequential matter, to be able to elucidate clearly how each parameter correlates to the patient's current physiological state...
October 1, 2016: Mathematical Biosciences and Engineering: MBE
Eri Nitta, Kazuyuki Hirooka, Takeru Shimazaki, Shino Sato, Kaori Ukegawa, Yuki Nakano, Akitaka Tsujikawa
PURPOSE: This study compared retinal vessel oxygen saturation before and after glaucoma surgery. METHODS: Retinal oxygen saturation in glaucoma patients was measured using a non-invasive spectrophotometric retinal oximeter. Adequate image quality was found in 49 of the 108 consecutive glaucoma patients recruited, with 30 undergoing trabeculectomy, 11 EX-PRESS and eight trabeculotomy. Retinal oxygen saturation measurements in the retinal arterioles and venules were performed at 1 day prior to and at approximately 10 days after surgery...
October 24, 2016: Acta Ophthalmologica
Maureen Le Danseur, Sonja E Stutzman, Jennifer Wilson, Isabelle Sislak, DaiWai M Olson
PURPOSE: This study examined the effectiveness of the consensus model (Clinical Advisory Board for Intermittent Catheterization [CABIC] method) for teaching clean intermittent self-catheterization (ISC). The primary hypothesis was that the CABIC method of teaching ISC would result in higher ISC knowledge and performance scores. DESIGN: Prospective, non-randomized, pre-post study of an educational intervention of ISC education with nursing students. METHODS: Nursing students completed a self-report pre/posttest, education of the CABIC method, and video recording of the CABIC method using same-gendered manikins...
October 24, 2016: Rehabilitation Nursing: the Official Journal of the Association of Rehabilitation Nurses
T Jean M Arseneau-Robar, Eliane Müller, Anouk L Taucher, Carel P van Schaik, Erik P Willems
Males in a number of group-living species fight in intergroup conflicts to defend access to food resources, a seemingly paradoxical behaviour, given that this resource does not usually limit male fitness directly. We investigated the mechanism(s) driving apparent male food defence in wild vervet monkeys (Chlorocebus aethiops pygerythrus) by testing the effect that female resource access, and female audience size and activity had on the response of focal males during simulated intergroup encounters. Males do not appear to defend food to increase the reproductive success of female group members because their response was not influenced by the presence of provisioning boxes that only females could access...
October 24, 2016: Scientific Reports
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