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https://www.readbyqxmd.com/read/28324771/synthesis-and-conformational-analysis-of-a-simplified-inositol-model-of-the-streptococcus-pneumoniae-19f-capsular-polysaccharide-repeating-unit
#1
Giorgio Catelani, Felicia D'Andrea, Lorenzo Guazzelli, Alessio Griselli, Nicola Testi, Maria Assunta Chiacchio, Laura Legnani, Lucio Toma
Carbohydrate mimics have been studied for a long time as useful sugar substitutes, both in the investigation of biological events and in the treatment of sugar-related diseases. Here we report further evaluation of the capabilities of inositols as carbohydrate substitutes. The conformational features of an inositol-model of a simplified repeating unit corresponding to the capsular polysaccharide of Streptococcus pneumoniae 19F has been evaluated by computational analysis, and compared to the native repeating unit...
March 14, 2017: Carbohydrate Research
https://www.readbyqxmd.com/read/28324748/influenza-vaccination-in-adult-patients-with-solid-tumours-treated-with-chemotherapy
#2
REVIEW
Albert Vollaard, Imke Schreuder, Lizzy Slok-Raijmakers, Wim Opstelten, Guus Rimmelzwaan, Hans Gelderblom
Patients with solid tumours receiving chemotherapy are at risk for influenza complications. Yearly influenza vaccination is recommended to patients treated with chemotherapy. However, adherence to vaccination is low, most likely due to lack of data on efficacy, optimal timing and safety of vaccination. There is scarce evidence for the effectiveness of the influenza vaccine in adult patients with solid tumours and chemotherapy on reduction of pneumonia, decreased mortality and fewer interruptions of oncological treatment...
March 16, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28324273/acute-pancreatitis-caused-by-mycoplasma-pneumoniae-an-unusual-etiology
#3
Teresa Valdés Lacasa, María Alejandra Duarte Borges, Alicia García Marín, Covadonga Gómez Cuervo
It is well known that the most important etiologies of acute pancreatitis are gallstones and alcohol consumption. Once these causes have been ruled out, especially in young adults, it is important to consider less frequent etiologic factors such as drugs, trauma, malformations, autoimmunity or systemic diseases. Other rare and less well studied causes of this pathology are infections, among which Mycoplasma pneumoniae has been reported to cause acute pancreatitis as an unusual extrapulmonary manifestation. Here, we report the case of a 21-year-old patient who had acute idiopathic pancreatitis associated with an upper respiratory tract infection...
March 21, 2017: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/28324200/prevalence-and-characterization-of-non-sicca-onset-primary-sj%C3%A3-gren-syndrome-with-interstitial-lung-involvement
#4
Manfredi Andreina, Sebastiani Marco, Cerri Stefania, Cassone Giulia, Bellini Pietrantonio, Della Casa Giovanni, Luppi Fabrizio, Ferri Clodoveo
Primary Sjögren syndrome (pSS)-related interstitial lung disease (ILD) involved about 10-20% of patients. In 20% of cases, ILD can be diagnosed before pSS; anyway, few studies have investigated the frequency of ILD as the first clinically relevant manifestation of pSS, generally referred to retrospective studies. Aim of our prospective study was to describe prevalence, clinical, serological, and instrumental features of non-sicca onset pSS patients with interstitial lung involvement. During a period of 48 months, all consecutive patients diagnosed as pSS were enrolled...
March 21, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28324171/risk-factors-for-delayed-gastric-emptying-after-esophagectomy
#5
Frank Benedix, Tobias Willems, Siegfried Kropf, Daniel Schubert, Patrick Stübs, Stephanie Wolff
PURPOSE: Delayed gastric emptying (DGE) is a common functional disorder after esophagectomy with gastric tube reconstruction. Little is known about risk factors that can predict this debilitating complication. METHODS: Patients who underwent elective esophagectomy from 2008 to 2016 in a single center were retrospectively reviewed. Diagnosis of DGE was based on clinical, radiological, and endoscopic findings. Uni- and multivariate analyses were performed to identify patient-, tumor-, and procedure-related factors that increase the risk of DGE...
March 21, 2017: Langenbeck's Archives of Surgery
https://www.readbyqxmd.com/read/28323917/gh-treatment-in-children-with-prader-willi-syndrome-3-years-longitudinal-data-in-prepubertal-children-and-adult-height-data-from-kigs-database
#6
N E Bakker, A Lindberg, J Heissler, H A Wollmann, C Camacho-Hübner, A C Hokken-Koelega
Context: Longitudinal data of children with Prader-Willi syndrome (PWS) treated with Genotropin were registered in Pfizer-International-Growth-Database (KIGS). Objective: Evaluate efficacy and safety of GH-treatment in a unique large group of children with PWS. Design: Longitudinal data registered in KIGS, from 1987-2012. Setting: Worldwide retrospective cohort study. Patients: 522 prepubertal children treated with GH for 3 years and 173 children who had reached adult height...
February 16, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323788/traumatic-colon-injury-in-damage-control-laparotomy-a-multicenter-trial-is-it-safe-to-do-a-delayed-anastomosis
#7
Leah Carey Tatebe, Andrew Jennings, Ken Tatebe, Alexandra Handy, Purvi Prajapati, Michael Smith, Tai Do, Gerald O Ogola, Rajesh R Gandhi, Therese M Duane, Stephen Luk, Laura Bruce Petrey
BACKGROUND: Delayed colonic anastomosis after damage control laparotomy (DCL) is an alternative to colostomies during a single laparotomy (SL) in high-risk patients. However, literature suggests increased colonic leak rates up to 27% with DCL, and various reported risk factors. We evaluated our regional experience to determine if delayed colonic anastomosis was associated with worse outcomes. METHODS: A multicenter retrospective cohort study was performed across three Level I trauma centers encompassing traumatic colon injuries from January 2006 through June 2014...
April 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28323747/supporting-a-youth-with-cerebellar-ataxia-into-adolescence
#8
Veronica Meneses, Zurisadai Gonzalez-Castillo, Veronica B Edgar, Marilyn Augustyn
Zoe, a 13-year-old white girl, presents as a new patient to your pediatric clinic with complaints of frequent emesis, anxiety, and learning problems, and previous diagnosis of cerebellar ataxia. Parents accompany Zoe and state, "it is really hard for her to go out, she gets sick and falls easily." She was born full term by vaginal delivery without complications. Given globally delayed milestones, she received early intervention services. Feeding problems began at infancy, including gastroesophageal reflux and aspiration pneumonia...
March 17, 2017: Journal of Developmental and Behavioral Pediatrics: JDBP
https://www.readbyqxmd.com/read/28323732/bronchoscopic-removal-of-a-long-standing-aspirated-iron-pill
#9
Sandeep R Somalaraju, Katherine Patil, Anthony C Campagna
While patients have been known to aspirate pills, they virtually never persist long enough to lead to complications. A spectrum of events, however, may arise especially from iron pill aspiration. If not identified and removed early, cytotoxic damage from local free-radical generation may result in airway damage. We report a case of an aspirated iron pill, which did not disintegrate and presented with chronic cough. Imaging revealed a foreign body in the right bronchus, and bronchoscopic removal allowed resolution of an associated pneumonia, without any further symptoms on subsequent surveillance...
April 2017: Journal of Bronchology & Interventional Pulmonology
https://www.readbyqxmd.com/read/28323617/cryoem-structures-of-membrane-pore-and-prepore-complex-reveal-cytolytic-mechanism-of-pneumolysin
#10
Katharina van Pee, Alexander Neuhaus, Edoardo D'Imprima, Deryck J Mills, Werner Kühlbrandt, Özkan Yildiz
Many pathogenic bacteria produce pore-forming toxins to attack and kill human cells. We have determined the 4.5 Å structure of the ~2.2 MDa pore complex of pneumolysin, the main virulence factor of Streptococcus pneumoniae, by cryoEM. The pneumolysin pore is a 400 Å ring of 42 membrane-inserted monomers. Domain D3 of the soluble toxin refolds into two ~85 Å β-hairpins that traverse the lipid bilayer and assemble into a 168-strand β-barrel. The pore complex is stabilized by salt bridges between β-hairpins of adjacent subunits and an internal α-barrel...
March 21, 2017: ELife
https://www.readbyqxmd.com/read/28323564/differential-susceptibility-of-bighorn-sheep-ovis-canadensis-and-domestic-sheep-ovis-aries-neutrophils-to-mannheimia-haemolytica-leukotoxin-is-not-due-to-differential-expression-of-cell-surface-cd18
#11
Rohana P Dassanayake, Sudarvili Shanthalingam, Weiguo Liu, Eduardo Casas, Subramaniam Srikumaran
Bighorn sheep ( Ovis canadensis ) are more susceptible to pneumonia caused by Mannheimia haemolytica than are domestic sheep ( Ovis aries ). Leukotoxin produced by M. haemolytica is the principal virulence factor involved in pneumonia pathogenesis. Although leukotoxin is cytolytic to all subsets of ruminant leukocytes, neutrophils are the most susceptible subset. Bighorn sheep neutrophils are 4- to 8-fold more susceptible to leukotoxin-induced cytolysis than are domestic sheep neutrophils. We hypothesized that the higher susceptibility of bighorn sheep neutrophils, in comparison to domestic sheep neutrophils, is due to higher expression of CD18, the receptor for leukotoxin on leukocytes...
March 21, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/28320039/the-role-of-peganum-harmala-ethanolic-extract-and-type-ii-toxin-antitoxin-system-in-biofilm-formation
#12
Nasrin Valizadeh, Firuzeh Valian, Nourkhoda Sadeghifard, Shahriar Karami, Iraj Pakzad, Hossein Kazemian, Sobhan Ghafourian
Toxin antitoxin system is a regulatory system that antitoxin inhibits the toxin. We aimed to determine the role of TA loci in biofilm formation in K. pneumoniae clinical and environmental isolates; also inhibition of biofilm formation by Peganum harmala. So, 40 K. pneumoniae clinical and environmental isolates were subjected for PCR to determine the frequency of mazEF, relEB, and mqsRA TA loci. Biofilm formation assay subjected for all isolates. Then, P. harmala was tested against positive biofilm formation strains...
March 20, 2017: Drug Research
https://www.readbyqxmd.com/read/28319520/infections-in-patients-with-a-total-artificial-heart-are-common-but-rarely-fatal
#13
Luis F Hidalgo, Keyur B Shah, Richard H Cooke, Daniel G Tang, Vigneshwar Kasirajan, Howard A Cooper, Wilbert S Aronow
Patients who received a total artificial heart (TAH) at Virginia Commonwealth University (VCU) between January 1, 2010 and December 31, 2011 were identified from the VCU Mechanical Circulatory Support Clinical Database. Retrospective data extraction from the medical records was performed from the time of TAH implantation until heart transplantation or death. Infections were classified as confirmed or suspected. Twenty-seven men and 5 women, mean age 49.5 years (range 24 to 68 years) received a TAH. The mean duration of TAH support was 225 days (range 1 to 1334 days)...
March 17, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/28318766/bacille-calmette-gu%C3%A3-rin-bcg-vaccination-at-birth-and-antibody-responses-to-childhood-vaccines-a-randomised-clinical-trial
#14
Thomas Nørrelykke Nissen, Nina Marie Birk, Gaby Smits, Dorthe Lisbeth Jeppesen, Lone Graff Stensballe, Mihai G Netea, Fiona van der Klis, Christine Stabell Benn, Ole Pryds
INTRODUCTION: BCG vaccination has been associated with beneficial non-specific effects on child health. Some immunological studies have reported heterologous effects of vaccines on antibody responses to heterologous vaccines. Within a randomised clinical trial of Bacille Calmette-Guérin (BCG) vaccination at birth, The Danish Calmette Study, we investigated the effect of BCG at birth on the antibody response to the three routine vaccines against DiTeKiPol/Act-Hib and Prevenar 13 in a subgroup of participants...
March 15, 2017: Vaccine
https://www.readbyqxmd.com/read/28318659/cardiovascular-and-general-health-status-of-adults-with-trisomy-21
#15
Samuel A Hayes, Shelby Kutty, Joshua Thomas, Joyce T Johnson, Anji T Yetman
BACKGROUND: Patients with Trisomy 21 are now living well into adulthood. Little data exists to assist the cardiologist in the care of these patients. We sought to examine the cardiac and general health status of adults with Trisomy 21 undergoing cardiac evaluation. METHODS & RESULTS: A retrospective review of all affected adults >21years followed at 2 tertiary care institutions was performed. Of 193 patients identified, median age was 31 (range 21.1-60.5) years...
March 10, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28318608/multi-center-evaluation-of-one-commercial-and-12-in-house-real-time-pcr-assays-for-detection-of-mycoplasma-pneumoniae
#16
Roger Dumke, Alvaro J Benitez, Victoria Chalker, Karolina Gullsby, Birgit Henrich, Carlos Hidalgo-Grass, Theo Hoogenboezem, Darja Kese, Katherine Loens, Jolanda Maaskant, Ayelet Michael-Gayego, Allon E Moses, Ran Nir-Paz, Suzan D Pas, Sabine Pereyre, Randi F Petersen, Meike Rosenblatt, Annemarie M C van Rossum, Søren A Uldum, Wendy W J Unger, Dominique Ursi, Jonas M Winchell, Cecile Bebear
Detection of Mycoplasma pneumoniae by real-time PCR is not yet standardized across laboratories. We have implemented a standardization protocol to compare the performance of thirteen commercial and in-house approaches. Despite differences on threshold values of samples, all assays were able to detect at least 20M. pneumoniae genomes per reaction.
March 8, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/28318536/chromobacterium-violaceum-infection-in-a-horse
#17
Márcia Elisa Hammerschmitt, Veronica Machado Rolim, Gustavo Geraldo Medina Snel, Franciele Maboni Siqueira, David Driemeier, Saulo Petinatti Pavarini
Chromobacterium violaceum is an opportunistic pathogen of mammals that produces characteristic violet pigment in bacterial culture. We report pneumonia and septicaemia caused by C. violaceum in a horse. Necropsy examination was performed on a 3-year-old Quarter Horse stallion with a history of recurrent episodes of pneumonia, fever, dyspnoea and sanguineous nasal discharge. The lungs were not collapsed, but they contained dark red foci mixed with white areas, and multiple nodules of firm consistency. Within the liver and kidney there were randomly distributed, multifocal, white pinpoint lesions (0...
March 16, 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28318472/antimicrobial-resistance-penicillin-binding-protein-sequences-and-pilus-islet-carriage-in-relation-to-clonal-evolution-of-streptococcus-pneumoniae-serotype-19a-in-russia-2002-2013
#18
N Mayanskiy, T Savinova, N Alyabieva, O Ponomarenko, E Brzhozovskaya, A Lazareva, L Katosova, R Kozlov
Clonal changes of serotype 19A pneumococci have been appreciated in conjunction with growing prevalence of this serotype after implementation of the seven-valent pneumococcal conjugate vaccine (PCV7). In the present study, we characterized serotype 19A pneumococci collected in Russia within a decade preceding the implementation of PCV vaccination and described their clonal evolution. We retrospectively analyzed non-invasive serotype 19A isolates collected in 2002-2013. All isolates were subjected to multilocus sequence typing, antimicrobial susceptibility testing, determination of macrolide resistance genotype, molecular detection of pilus islet (PI) carriage, sequencing of penicillin-binding protein (PBP) genes...
March 20, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28317607/nutritional-aspects-of-dysphagia-management
#19
C Gallegos, E Brito-de la Fuente, P Clavé, A Costa, G Assegehegn
This chapter describes the nutritional aspects of dysphagia management by starting with the definition of these two conditions (dysphagia and malnutrition) that share three main clinical characteristics: (a) their prevalence is very high, (b) they can lead to severe complications, and (c) they are frequently underrecognized and neglected conditions. From an anatomical standpoint, dysphagia can result from oropharyngeal and/or esophageal causes; from a pathophysiological perspective, dysphagia can be caused by organic or structural diseases (either benign or malignant) or diseases causing impaired physiology (mainly motility and/or perception disorders)...
2017: Advances in Food and Nutrition Research
https://www.readbyqxmd.com/read/28317139/mortality-after-inpatient-treatment-for-severe-pneumonia-in-children-a-cohort-study
#20
Moses M Ngari, Greg Fegan, Martha K Mwangome, Mwanajuma J Ngama, Neema Mturi, John Anthony Gerard Scott, Evasius Bauni, David James Nokes, James A Berkley
BACKGROUND: Although pneumonia is a leading cause of inpatient mortality, deaths may also occur after discharge from hospital. However, prior studies have been small, in selected groups or did not fully evaluate risk factors, particularly malnutrition and HIV. We determined 1-year post-discharge mortality and risk factors among children diagnosed with severe pneumonia. METHODS: A cohort study of children aged 1-59 months admitted to Kilifi County Hospital with severe pneumonia (2007-12)...
March 20, 2017: Paediatric and Perinatal Epidemiology
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