keyword
MENU ▼
Read by QxMD icon Read
search

pneumococcus

keyword
https://www.readbyqxmd.com/read/29226070/economic-burden-of-community-acquired-pneumonia-among-elderly-patients-a-japanese-perspective
#1
Keiko Konomura, Hideaki Nagai, Manabu Akazawa
Background: This study aimed to estimate the economic burden of community-acquired pneumonia (CAP) among elderly patients in Japan. In addition, the study evaluated the relationship between total treatment cost and CAP risk factors. Methods: An administrative database was searched for elderly patients (≥ 65 years old) who had pneumonia (ICD-10 code: J12-J18) and an antibiotic prescription between 1 June 2014 and 31 May 2015. The all-cause total healthcare costs of outpatient and inpatient CAP episodes were calculated...
2017: Pneumonia
https://www.readbyqxmd.com/read/29221986/streptococcus-pneumoniae-two-component-regulatory-systems-the-interplay-of-the-pneumococcus-with-its-environment
#2
REVIEW
Alejandro Gómez-Mejia, Gustavo Gámez, Sven Hammerschmidt
Streptococcus pneumoniae is a human pathobiont possessing a diverse array of multifunctional proteins essential for bacterial fitness and virulence. Gene expression is tightly controlled by regulatory components and among the pneumococcal sensorial tools, two‑component regulatory systems (TCS) are the most widespread and conserved. This review aims to provide a comprehensive analysis of original studies on pneumococcal TCS on a functional level. Despite a rather chaotic nomenclature, the current available information on pneumococcal regulation by these systems can be conveniently addressed, according to the regulation of pathophysiological cell processes and the responses to detectable environmental signals...
November 26, 2017: International Journal of Medical Microbiology: IJMM
https://www.readbyqxmd.com/read/29203882/pasta-repeats-of-the-protein-kinase-stkp-interconnect-cell-constriction-and-separation-of-streptococcus-pneumoniae
#3
Laure Zucchini, Chryslène Mercy, Pierre Simon Garcia, Caroline Cluzel, Virginie Gueguen-Chaignon, Frédéric Galisson, Céline Freton, Sébastien Guiral, Céline Brochier-Armanet, Patrice Gouet, Christophe Grangeasse
Eukaryotic-like serine/threonine kinases (eSTKs) with extracellular PASTA repeats are key membrane regulators of bacterial cell division. How PASTA repeats govern eSTK activation and function remains elusive. Using evolution- and structural-guided approaches combined with cell imaging, we disentangle the role of each PASTA repeat of the eSTK StkP from Streptococcus pneumoniae. While the three membrane-proximal PASTA repeats behave as interchangeable modules required for the activation of StkP independently of cell wall binding, they also control the septal cell wall thickness...
December 4, 2017: Nature Microbiology
https://www.readbyqxmd.com/read/29200185/early-vaccine-type-pneumococcal-acute-otitis-media-does-not-predispose-to-subsequent-otitis-when-compared-to-early-acute-otitis-media-due-to-other-bacterial-etiology
#4
Arto A Palmu, Mika Lahdenkari
BACKGROUND: Prevention of acute otitis media (AOM), and especially recurrence and biofilm formation, by pneumococcal conjugate vaccines (PCV) has been hypothesized to be due to prevention of early episodes triggering the vicious cycle. We tested the specific role of vaccine-type pneumococcal AOM in this hypothesis. METHODS: In the phase III randomized, double-blind FinOM Vaccine Trial conducted in 1995-99 children received PCV7 or hepatitis B vaccine as control at 2/4/6/12 months of age and were followed for AOM...
December 1, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/29181204/a-case-of-invasive-pneumococcal-infection-with-septic-shock-and-rare-complications
#5
John R Woytanowski, Nausheen Hakim, Caytlin Deering, Sara Schultz
Invasive pneumococcus is a serious illness with potentially devastating outcomes. A 64-year-old female with a medical history of psoriatic arthritis and diabetes was transferred from an outside hospital for ventilator dependent respiratory failure and altered mental status. She initially presented with worsening back pain and was found to have leukocytosis with bandemia and acute renal failure but she was in septic shock upon arrival to our tertiary care center. Her blood cultures grew Streptococcus pneumoniae and MRI of the brain revealed pus within the posterior lateral ventricles and multiple infarcts...
2017: Case Reports in Critical Care
https://www.readbyqxmd.com/read/29152579/streptococcus-pneumoniae-tigr4-phase-locked-opacity-variants-differ-in-virulence-phenotypes
#6
Melissa B Oliver, Ankita Basu Roy, Ranjit Kumar, Elliot J Lefkowitz, W Edward Swords
Streptococcus pneumoniae (pneumococcus) is a leading human pathogen that can cause serious localized and invasive diseases. Pneumococci can undergo a spontaneous and reversible phase variation that is reflected in colony opacity and which allows the population to adapt to different host environments. Generally, transparent variants are adapted for nasopharyngeal colonization, whereas opaque variants are associated with invasive disease. In recent work, colony phase variation was shown to occur by means of recombination events to generate multiple alleles of the hsdS targeting domain of a DNA methylase complex, which mediates epigenetic changes in gene expression...
November 2017: MSphere
https://www.readbyqxmd.com/read/29126217/change-in-pneumococcus-serotypes-but-not-mortality-or-morbidity-in-pre-and-post-13-valent-polysaccharide-conjugate-vaccine-era-epidemiology-in-a-pediatric-intensive-care-unit-over-10-years
#7
Kam Lun Hon, King Hang Chan, Pak Long Ko, Michelle Ho Yan Cheung, Kathy Yin C Tsang, Lawrence C N Chan, Renee W Y Chan, Ting Fan Leung, Margaret Ip
Aim: Pneumococcus is a common commensal and an important pathogen among children for which immunization is available. Some serotypes occasionally cause severe pneumococcal disease with high mortality and morbidity. We reviewed all pneumococcal serotypes and mortality/morbidity in a pediatric intensive care unit (PICU) following universal pneumococcal conjugate vaccine (PCV) immunization. Methods: A 13-valent PCV was introduced in the universal immunization program in late 2011 in Hong Kong...
November 6, 2017: Journal of Tropical Pediatrics
https://www.readbyqxmd.com/read/29118170/lyta-quantitative-pcr-on-sputum-and-nasopharyngeal-swab-samples-in-the-detection-of-pneumococcal-pneumonia-among-the-elderly
#8
Annika Saukkoriipi, Arto A Palmu, Thierry Pascal, Vincent Verlant, William P Hausdorff, Jukka Jokinen
Quantitative real-time PCR (qPCR) on sputum or nasopharyngeal specimens has shown promising results in the detection of pneumococcal community-acquired pneumonia (PncCAP). We applied qPCR for the autolysin gene (lytA) and compared sputum and nasopharyngeal swab (NPS) pneumococcal loads in elderly patients with community-acquired pneumonia (CAP), and specifically in patients with PncCAP, to those in patient groups with other respiratory disease. We studied patients aged ≥65 years with radiologically confirmed CAP, clinical CAP not retrospectively radiologically confirmed, other acute respiratory infection, or stable chronic lung disease...
November 8, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/29092707/determining-the-contribution-of-em-streptococcus-pneumoniae-em-to-community-acquired-pneumonia-in-australia
#9
REVIEW
J Kevin Yin, Sanjay H Jayasinghe, Patrick G Charles, Catherine King, Clayton K Chiu, Robert I Menzies, Peter B McIntyre
OBJECTIVE: To evaluate trends in the proportion and severity of community-acquired pneumonia (CAP) attributable to Streptococcus pneumoniae (pneumococcus) in Australians aged 18 years and over. STUDY DESIGN: Systematic review with unpublished data from the largest study. DATA SOURCES: Multiple key bibliographic databases to June 2016. STUDY SELECTION: Australian studies on the aetiology of CAP in adults. DATA SYNTHESIS: In the 12 studies identified, pneumococcus was the most common cause of CAP...
November 6, 2017: Medical Journal of Australia
https://www.readbyqxmd.com/read/29069315/the-impact-of-pneumococcal-vaccination-on-bacterial-and-viral-pneumonia-in-western-australian-children-record-linkage-cohort-study-of-469-589-births-1996-2012
#10
Parveen Fathima, Christopher C Blyth, Deborah Lehmann, Faye J Lim, Tasnim Abdalla, Nicholas de Klerk, Hannah C Moore
Background: Pneumococcal conjugate vaccine (PCV) was included in Australia's National Immunisation Program for all children from 2005. We assessed the impact of PCV on all-cause and pathogen-specific pneumonia hospitalisations in Western Australian (WA) children aged ≤16 years. Methods: All hospitalisations with pneumonia-related ICD-10AM diagnosis codes occurring in WA-born children (1996-2012) were linked to pathology records. Age-specific incidence rate ratios and temporal trends for all-cause and pathogen-specific pneumonia hospitalisations were calculated pre- and post-PCV introduction...
October 23, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29067263/survey-of-vaccination-practices-in-patients-with-diabetes-a-report-examining-patient-and-provider-perceptions-and-barriers
#11
Carlos E Alvarez, Luciana Clichici, Angela Patricia Guzmán-Libreros, Mariola Navarro-Francés, Javier Ena
In a cross-sectional study involving 279 patients with diabetes attending a primary care center the proportion of patients vaccinated for seasonal influenza, pneumococcus and hepatitis B was 40%, 2% and 2%, respectively. We found significant barriers for vaccination in 24% of patients and in 42% of providers.
September 2017: Journal of Clinical & Translational Endocrinology
https://www.readbyqxmd.com/read/29061707/cell-invasion-and-pyruvate-oxidase-derived-h2o2-are-critical-for-streptococcus-pneumoniae-mediated-cardiomyocyte-killing
#12
Terry Brissac, Anukul T Shenoy, LaDonna A Patterson, Carlos J Orihuela
Streptococcus pneumoniae (Spn, the pneumococcus) is the leading cause of community-acquired pneumonia and is now recognized to be a direct contributor to adverse acute cardiac events. During invasive pneumococcal disease, Spn can gain access to the myocardium, kill cardiomyocytes, and form bacteria-filled "microlesions" causing considerable acute and long-lasting cardiac damage. While the molecular mechanisms responsible for bacterial translocation into the heart have been elucidated, the initial interactions of heart-invaded Spn with cardiomyocytes remain unclear...
October 23, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/29043423/preliminary-report-from-the-world-health-organisation-chest-radiography-in-epidemiological-studies-project
#13
REVIEW
Nasreen Mahomed, Nicholas Fancourt, John de Campo, Margaret de Campo, Aliu Akano, Thomas Cherian, Olivia G Cohen, David Greenberg, Stephen Lacey, Neera Kohli, Henrique M Lederman, Shabir A Madhi, Veronica Manduku, Eric D McCollum, Kate Park, Jose Luis Ribo-Aristizabal, Naor Bar-Zeev, Katherine L O'Brien, Kim Mulholland
Childhood pneumonia is among the leading infectious causes of mortality in children younger than 5 years of age globally. Streptococcus pneumoniae (pneumococcus) is the leading infectious cause of childhood bacterial pneumonia. The diagnosis of childhood pneumonia remains a critical epidemiological task for monitoring vaccine and treatment program effectiveness. The chest radiograph remains the most readily available and common imaging modality to assess childhood pneumonia. In 1997, the World Health Organization Radiology Working Group was established to provide a consensus method for the standardized definition for the interpretation of pediatric frontal chest radiographs, for use in bacterial vaccine efficacy trials in children...
October 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/29032897/prevnar-13-vaccine-failure-in-a-mouse-model-for-vitamin-a-deficiency
#14
Rhiannon R Penkert, Amy Iverson, Jason W Rosch, Julia L Hurwitz
Streptococcus pneumoniae (pneumococcus) is responsible for serious pediatric respiratory infections, and kills close to one million children under the age of five each year. Unfortunately, the Prevnar-13 vaccine (PCV-13) that is used to protect children from the serious consequences of pneumococcus infections is not always successful. Given that vitamin A deficiency (VAD) is known to affect children in both developed and developing countries, we asked if VAD could be responsible, at least in part, for PCV-13 vaccine failures...
November 1, 2017: Vaccine
https://www.readbyqxmd.com/read/29028977/evolving-understanding-of-the-causes-of-pneumonia-in-adults-with-special-attention-to-the-role-of-pneumococcus
#15
Daniel M Musher, Michael S Abers, John G Bartlett
Before 1945, Streptococcus pneumoniae caused more than 90% of cases of pneumonia in adults. After 1950, the proportion of pneumonia caused by pneumococcus began to decline. Pneumococcus has continued to decline; at present, this organism is identified in fewer than fewer10%-15% of cases. This proportion is higher in Europe, a finding likely related to differences in vaccination practices and smoking. Gram-negative bacilli, Staphylococcus aureus, Chlamydia, Mycoplasma, and Legionella are each identified in 2%-5% of patients with pneumonia who require hospitalization...
September 27, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29020230/effect-of-maternally-derived-anti-protein-and-anti-capsular-igg-antibodies-on-the-rate-of-acquisition-of-nasopharyngeal-carriage-of-pneumococcus-in-newborns
#16
John Ojal, David Goldblatt, Caroline Tigoi, J Anthony G Scott
Background: In developing countries, introduction of pneumococcal conjugate vaccine has not eliminated circulation of vaccine serotypes. Vaccinating pregnant mothers to increase antibody concentrations in their newborn infants may reduce the acquisition of pneumococcal carriage and subsequent risk of disease. We explored the efficacy of passive immunity, attributable to anti-protein and anti-capsular pneumococcal antibodies, against acquisition of carriage. Methods: We examined the rate of nasopharyngeal acquisition of pneumococci in the first 90 days of life associated with varying anti-capsular and anti-protein antibody concentrations in infant cord/maternal venous blood in Kilifi, Kenya...
August 17, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29020218/pan-serotype-reduction-in-progression-of-streptococcus-pneumoniae-to-otitis-media-after-rollout-of-pneumococcal-conjugate-vaccines
#17
Joseph A Lewnard, Noga Givon-Lavi, Daniel M Weinberger, Marc Lipsitch, Ron Dagan
Background: Reductions in otitis media (OM) burden following rollout of pneumococcal conjugate vaccines (PCVs) have exceeded predictions of vaccine impact. In settings with active surveillance, reductions in OM caused by vaccine-targeted pneumococcal serotypes have co-occurred with reductions in OM caused by other pathogens carried in the upper-respiratory tract of children. To understand these changes, we investigated the progression of vaccine-targeted and non-vaccine pneumococcal serotypes from carriage to OM before and after vaccine rollout...
July 29, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28994899/prophylactic-antibiotics-for-preventing-pneumococcal-infection-in-children-with-sickle-cell-disease
#18
REVIEW
Angela E Rankine-Mullings, Shirley Owusu-Ofori
BACKGROUND: Persons with sickle cell disease (SCD) are particularly susceptible to infection. Infants and very young children are especially vulnerable. The 'Co-operative Study of Sickle Cell Disease' observed an incidence rate for pneumococcal septicaemia of 10 per 100 person years in children under the age of three years. Vaccines, including customary pneumococcal vaccines, may be of limited use in this age group. Therefore, prophylactic penicillin regimens may be advisable for this population...
October 10, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28994793/biochemical-and-structural-characterization-of-the-carbohydrate-transport-substrate-binding-protein-sp0092
#19
Simone Culurgioni, Minzhe Tang, David R Hall, Martin A Walsh
Development of new antimicrobials and vaccines for Streptococcus pneumoniae (pneumococcus) are necessary to halt the rapid rise in multiple resistant strains. Carbohydrate substrate binding proteins (SBPs) represent viable targets for the development of protein-based vaccines and new antimicrobials because of their extracellular localization and the centrality of carbohydrate import for pneumococcal metabolism, respectively. Described here is a rationalized integrated protocol to carry out a comprehensive characterization of SP0092, which can be extended to other carbohydrate SBPs from the pneumococcus and other bacteria...
October 2, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28961675/nasopharyngeal-pneumococcal-colonization-and-impact-of-a-single-dose-of-13-valent-pneumococcal-conjugate-vaccine-in-indian-children-with-hiv-and-their-unvaccinated-parents
#20
Bikas K Arya, Sangeeta Das Bhattacharya, Catherine G Sutcliffe, Feroze Ganaie, Arun Bhaskar, Subhasish Bhattacharyya, Swapan Kumar Niyogi, William J Moss, Samiran Panda, K L Ravikumar, Ranjan Saurav Das, Sutapa Mandal
BACKGROUND: HIV infection increases risk of invasive disease from Streptococcus pneumoniae. Pneumococcal conjugate vaccines (PCV) prevent invasive disease and acquisition of vaccine type (VT) pneumococcus in the nasopharynx. OBJECTIVE: To look at the safety and impact of one dose of PCV13 on acquisition of VT pneumococcal carriage in Indian children with HIV. METHOD: We conducted a cohort study in families of HIV-infected children (CLH) and families of HIV-uninfected children (HUC) in West Bengal...
September 27, 2017: Pediatric Infectious Disease Journal
keyword
keyword
33655
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"