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https://www.readbyqxmd.com/read/29443952/microhydration-and-the-enhanced-acidity-of-free-radicals
#1
John C Walton
Recent theoretical research employing a continuum solvent model predicted that radical centers would enhance the acidity (RED-shift) of certain proton-donor molecules. Microhydration studies employing a DFT method are reported here with the aim of establishing the effect of the solvent micro-structure on the acidity of radicals with and without RED-shifts. Microhydration cluster structures were obtained for carboxyl, carboxy-ethynyl, carboxy-methyl, and hydroperoxyl radicals. The numbers of water molecules needed to induce spontaneous ionization were determined...
February 14, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29443819/chronic-osteomyelitis-with-staphylococcus-aureus-deformation-in-submicron-canaliculi-of-osteocytes-a-case-report
#2
Karen L de Mesy Bentley, Ashlee MacDonald, Edward M Schwarz, Irvin Oh
CASE: A patient presenting with an infected diabetic foot ulcer and Staphylococcus aureus chronic osteomyelitis was studied to validate the clinical importance of bacterial colonization of osteocytic-canalicular networks, as we recently reported in a mouse model. We utilized transmission electron microscopy to describe the deformation of S. aureus, from round cocci to rod-shaped bacteria, in the submicron osteocytic-canalicular networks of amputated bone tissue. CONCLUSION: To our knowledge, this is the first evidence of S...
February 14, 2018: JBJS Case Connector
https://www.readbyqxmd.com/read/29443778/a-primitive-neuroectodermal-tumor-in-an-adult-case-report-of-a-unique-location-and-mri-characteristics
#3
Xin He, Zhongping Chen, Yutong Dong, Dan Tong
RATIONALE: Central nervous system primitive neuroectodermal tumors (CNS PNETs) mostly occur in children and present as cerebellar medulloblastoma. A few cases of PNETs occur in the cerebral hemisphere. The presence of a PNET in ventricles is extremely rare. The prognosis of CNS PNET is extremely poor, and the 5-year survival rate does not exceed 35%. In the present study, we describe the first case of a PNET in the ventricles with good prognosis. PATIENT CONCERNS: The case of a 36-year-old man is reported, who presented with a progressively worsening headache for 2 months...
February 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29443061/detecting-the-lyme-disease-spirochete-borrelia-burgdorferi-in-ticks-using-nested-pcr
#4
Melanie K B Wills, Andrea M Kirby, Vett K Lloyd
Lyme disease is a serious vector-borne infection that is caused by the Borrelia burgdorferi sensu lato family of spirochetes, which are transmitted to humans through the bite of infected Ixodes ticks. The primary etiological agent in North America is Borrelia burgdorferi sensu stricto. As geographic risk regions expand, it is prudent to support robust surveillance programs that can measure tick infection rates, and communicate findings to clinicians, veterinarians, and the general public. The molecular technique of nested polymerase chain reaction (nPCR) has long been used for this purpose, and it remains a central, inexpensive, and robust approach in the detection of Borrelia in both ticks and wildlife...
February 4, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29442887/extraction-of-cellulose-micro-whiskers-from-rice-husk-a-greener-approach
#5
Rajeev Kr Sharma, Rajesh Kumar, Anirudh P Singh
Herein, we report a greener, total chlorine free, ultrasonic physicochemical process of extraction and purification of cellulose micro-whiskers from rice husk. The initial step involves the treatment of the rice husk with a concentrated aqueous alkali solution for the duration of 6 h at 80 °C in round bottom flask in order to completely dissolve lignin and silica. After alkali pretreatment, the product obtained was thoroughly washed with distilled water, filtered and dried. The dried product was subjected to mechanical treatment followed by a bleaching process...
May 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29442853/effect-of-annealing-temperature-on-morphological-and-optical-transition-of-silver-nanoparticles-on-c-plane-sapphire
#6
Puran Pandey, Sundar Kunwar, Mao Sui, Ming-Yu Li, Quanzhen Zhang, Jihoon Lee
As a promising candidate for the improved performance, silver nanoparticles (Ag NPs) have been successfully adapted in various applications such as photovoltaics, light emitting diodes (LEDs), sensors and catalysis by taking the advantage of their controllable plasmonic properties. In this paper, the control on the morphologies and optical properties of Ag NPs on c-plane sapphire (0001) is demonstrated by the systematic control of annealing temperature (between 200 and 950 °C) with 20 and 6 nm thick Ag films through the solid state dewetting...
May 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29442132/correction-to-baseline-and-annual-repeat-rounds-of-screening-implications-for-optimal-regimens-of-screening
#7
Claudia I Henschke, Mary Salvatore, Matthew Cham, Charles A Powell, Larry DiFabrizio, Raja Flores, Andrew Kaufman, Corey Eber, Rowena Yip, David F Yankelevitz
The original version of this article unfortunately contained a mistake. The conflict of interest was incorrect.
February 13, 2018: European Radiology
https://www.readbyqxmd.com/read/29442127/situation-analysis-of-rehabilitation-service-to-support-the-national-disability-and-rehabilitation-plan-in-the-democratic-people%C3%A2-s-republic-of-korea
#8
Boya Nugraha, Christoph Gutenbrunner
OBJECTIVE: In 2013, the Democratic People's Republic of Korea (DPRK) signed the United Nations Convention on the Rights of Persons with Disabilities (UN-CRPD). Since the concept of rehabilitation services in the DPRK did not meet international standards, the government, through the Korean Federation for Protection of the Disabled (KFPD) and Munsu Rehabilitation Hospital (MRH), set up a technical consultation with external experts. METHODS: Two rounds of consultations were performed, in August 2016 and March 2017, with available methodology, as used in previous consultation processes, but excluding site visits...
February 14, 2018: Journal of Rehabilitation Medicine
https://www.readbyqxmd.com/read/29442088/morphological-and-morphometric-analysis-of-accessory-mental-foramen-in-dry-human-mandibles-of-south-indian-population
#9
J Rajkohila, Priyanka Daniel, Sakunthala Ambikaipakan, Suganthy Rabi
Background: Mental foramen (MF) is an important landmark for administration of local anesthesia in surgical procedures involving the mandible. Additional mental foramina, called accessory mental foramina (AMF) transmitting branches of mental nerve, have been reported. Detection of AMFs in presurgical imaging may reduce postoperative pain in dental surgical procedures. Aim: The aim of the study was to study the incidence and morphometric analysis of accessory MF in the dry human mandibles of South Indian population...
January 2018: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/29441504/statistical-alchemy-conceptual-validity-and-mapping-to-generate-health-state-utility-values
#10
Jeff Round, Annie Hawton
Mapping between non-preference- and preference-based health-related quality-of-life instruments has become a common technique for estimating health state utility values for use in economic evaluations. Despite the increased use of mapped health state utility estimates in health technology assessment and economic evaluation, the methods for deriving them have not been fully justified. Recent guidelines aim to standardise reporting of the methods used to map between instruments but do not address fundamental concerns in the underlying conceptual model...
December 2017: PharmacoEconomics Open
https://www.readbyqxmd.com/read/29441326/a-rare-case-of-primary-intrapulmonary-neurilemmoma-diagnosed-in-a-43-year-old-asymptomatic-man-with-a-well-defined-intrapulmonary-mass
#11
Serafeim Chrysikos, Maria Kaponi, Christina Triantafillidou, Theodoros Karampitsakos, Argyrios Tzouvelekis, Maria Anyfanti, Konstantinos Marossis, Marios Konstantinou, Rodoula Tringidou, Demosthenes Bouros, Katerina Dimakou
Neurilemmoma (NL), also termed schwannoma, presents as a well-circumscribed and encapsulated mass in the human body and is almost always solitary. CT scan of a patient with NL shows a round, ovoid, or lobulated well-demarcated solid mass of soft tissue density. Primary intrathoracic neurogenic tumors location varies. However, the development of such tumors is by far more common in the costovertebral angle of the posterior mediastinum. Here, we report a rare case of a 43-year-old patient, never smoker and previously healthy, who presented with a mass adjacent to the right pulmonary hilum...
2018: Frontiers in Oncology
https://www.readbyqxmd.com/read/29440883/do-not-do-in-copd-consensus-statement-on-overuse
#12
Felipe Villar-Álvarez, Raúl Moreno-Zabaleta, Jose Joaquin Mira-Solves, Eduardo Calvo-Corbella, Salvador Díaz-Lobato, Fernando González-Torralba, Ascensión Hernando-Sanz, Sara Núñez-Palomo, Sergio Salgado-Aranda, Beatriz Simón-Rodríguez, Paz Vaquero-Lozano, Isabel María Navarro-Soler
Background: To identify practices that do not add value, cause harm, or subject patients with chronic obstructive pulmonary disease (COPD) to a level of risk that outweighs possible benefits (overuse). Methods: A qualitative approach was applied. First, a multidisciplinary group of healthcare professionals used the Metaplan technique to draft and rank a list of overused procedures as well as self-care practices in patients with stable and exacerbated COPD. Second, in successive consensus-building rounds, description files were created for each "do not do" (DND) recommendation, consisting of a definition, description, quality of supporting evidence for the recommendation, and the indicator used to measure the degree of overuse...
2018: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/29440858/annular-alopecia-areata-a-morphologically-rare-variant
#13
Shimona Garg, Anand Kumar, Mala Bhalla, Kavita Poonia
Alopecia areata (AA) is the most common form of nonscarring alopecia involving the scalp and/or body. The most common pattern of hair loss is oval or round, but newer morphological variants are increasingly being described. We hereby report two cases of annular pattern of AA due to its unusual morphology.
January 2018: International Journal of Trichology
https://www.readbyqxmd.com/read/29440833/hemodynamic-rounds-can-we-mimic-a-temporary-pulmonary-artery-band-in-catheterization-laboratory-in-corrected-transposition-of-great-arteries-with-severe-tricuspid-regurgitation
#14
Avinash Anantharaj, Kothandam Sivakumar
Right ventricular (RV) geometry is altered by septal shift after pulmonary artery banding. This may reduce tricuspid regurgitation (TR) and improve ventricular function in patients with corrected transposition of great arteries and systemic right ventricle. However, banding is risky in sick patients with severe RV failure. There are no predictive models in clinical practice to test this septal shift hypothesis before a risky surgery. A transcatheter model to mimic a pulmonary artery band is presented in corrected transposition of great arteries with failing right ventricle and severe TR...
January 2018: Annals of Pediatric Cardiology
https://www.readbyqxmd.com/read/29440646/chronic-exposure-to-low-dose-of-bisphenol-a-impacts-on-the-first-round-of-spermatogenesis-via-sirt1-modulation
#15
Rosanna Chianese, Andrea Viggiano, Konrad Urbanek, Donato Cappetta, Jacopo Troisi, Marika Scafuro, Maurizio Guida, Grazia Esposito, Loreta Pia Ciuffreda, Francesco Rossi, Liberato Berrino, Silvia Fasano, Riccardo Pierantoni, Antonella De Angelis, Rosaria Meccariello
Spermatogenesis depends on endocrine, autocrine and paracrine communications along the hypothalamus-pituitary-gonad axis. Bisphenol A (BPA), an estrogen-mimic endocrine disrupting chemical, is an environmental contaminant used to manufacture polycarbonate plastics and epoxy resins with toxic effects for male reproduction. Here we investigated whether the chronic exposure to low BPA doses affects spermatogenesis through the modulation of SIRT1, a NAD+-dependent deacetylase involved in the progression of spermatogenesis, with outcomes on apoptosis, oxidative stress, metabolism and energy homeostasis...
February 13, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29440414/changing-character-of-rainfall-in-eastern-china-1951-2007
#16
Jesse A Day, Inez Fung, Weihan Liu
The topography and continental configuration of East Asia favor the year-round existence of storm tracks that extend thousands of kilometers from China into the northwestern Pacific Ocean, producing zonally elongated patterns of rainfall that we call "frontal rain events." In spring and early summer (known as "Meiyu Season"), frontal rainfall intensifies and shifts northward during a series of stages collectively known as the East Asian summer monsoon. Using a technique called the Frontal Rain Event Detection Algorithm, we create a daily catalog of all frontal rain events in east China during 1951-2007, quantify their attributes, and classify all rainfall on each day as either frontal, resulting from large-scale convergence, or nonfrontal, produced by local buoyancy, topography, or typhoons...
February 12, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29440283/evolution-of-neuropeptide-signalling-systems
#17
REVIEW
Maurice R Elphick, Olivier Mirabeau, Dan Larhammar
Neuropeptides are a diverse class of neuronal signalling molecules that regulate physiological processes and behaviour in animals. However, determining the relationships and evolutionary origins of the heterogeneous assemblage of neuropeptides identified in a range of phyla has presented a huge challenge for comparative physiologists. Here, we review revolutionary insights into the evolution of neuropeptide signalling that have been obtained recently through comparative analysis of genome/transcriptome sequence data and by 'deorphanisation' of neuropeptide receptors...
February 9, 2018: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29440265/causal-effects-of-the-microbiota-on-immune-mediated-diseases
#18
REVIEW
June L Round, Noah W Palm
The mammalian immune system has evolved in the presence of a complex community of indigenous microorganisms that constitutively colonize all barrier surfaces. This intimate relationship has resulted in the development of a vast array of reciprocal interactions between the microbiota and the host immune system, particularly in the intestine, where the density and diversity of indigenous microbes are greatest. Alterations in the gut microbiota have been correlated with almost every known immunological disease, but in most cases, it remains unclear whether these changes are a cause or effect of the disease or merely a reflection of epidemiological differences between groups...
February 9, 2018: Science Immunology
https://www.readbyqxmd.com/read/29439843/development-and-reliability-of-the-rating-of-compensatory-movements-in-upper-limb-prosthesis-wearers-during-work-related-tasks
#19
Tallie M J van der Laan, Sietke G Postema, Michiel F Reneman, Raoul M Bongers, Corry K van der Sluis
STUDY DESIGN: Reliability study. INTRODUCTION: Quantifying compensatory movements during work-related tasks may help to prevent musculoskeletal complaints in individuals with upper limb absence. PURPOSE OF THE STUDY: (1) To develop a qualitative scoring system for rating compensatory shoulder and trunk movements in upper limb prosthesis wearers during the performance of functional capacity evaluation tests adjusted for use by 1-handed individuals (functional capacity evaluation-one handed [FCE-OH]); (2) to examine the interrater and intrarater reliability of the scoring system; and (3) to assess its feasibility...
February 10, 2018: Journal of Hand Therapy: Official Journal of the American Society of Hand Therapists
https://www.readbyqxmd.com/read/29439702/bcg-vaccination-in-southern-rural-mozambique-an-overview-of-coverage-and-its-determinants-based-on-data-from-the-demographic-and-health-surveillance-system-in-the-district-of-manhi%C3%A3-a
#20
Elena Marbán-Castro, Charfudin Sacoor, Ariel Nhacolo, Orvalho Augusto, Edgar Jamisse, Elisa López-Varela, Aina Casellas, John J Aponte, Quique Bassat, Betuel Sigauque, Eusebio Macete, Alberto L Garcia-Basteiro
BACKGROUND: Over the past four decades, the World Health Organization established the Expanded Programme on Immunization (EPI) to foster universal access to all relevant vaccines for all children at risk. The success of this program has been undeniable, but requires periodic monitoring to ensure that coverage rates remain high. The aim of this study was to measure the BCG vaccination coverage in Manhiça district, a high TB burden rural area of Southern Mozambique and to investigate factors that may be associated with BCG vaccination...
February 13, 2018: BMC Pediatrics
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