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Viral pneumonia and bacterial pneumonia

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https://www.readbyqxmd.com/read/28729050/an-infant-with-concurrent-serotype-6c-invasive-pneumococcal-disease-and-infectious-mononucleosis
#1
Naoko Nishikawa-Nakamura, Takafumi Okada, Keiko Nishimura, Tsuyako Iwai, Kimiko Ubukata, Satoshi Iwata, Asayuki Iwai
Streptococcus pneumoniae is a main causative agent of serious invasive bacterial infections. However, concurrent infection with invasive pneumococcal disease (IPD) and viral infectious mononucleosis (IM) is rare. We report an infant with serotype 6C infection causing IPD occurring simultaneously with IM. A previously healthy 11-month-old girl referred to our hospital because of fever, leukopenia, and elevated C-reactive protein presented to us with disturbance of consciousness, tachycardia, tachypnea and agranulocytosis...
July 17, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28726662/cytokines-as-the-predictors-of-severe-mycoplasma-pneumoniae-pneumonia-in-children-review
#2
I Chkhaidze, N Kapanadze
In spite of many attempts to differentiate bacterial from viral disease and predict severity and outcome, the etiologic diagnosis of paediatric community acquired pneumonia and the estimation of potential outcomes remain unsolved problems in most cases. Mycoplasma pneumoniae is one of the major pathogens causing CAP in children. Although MP infection was traditionally thought to be a self-limited process, more and more severe cases even fatal cases of MP infections were reported in recent years. So it is essential for pediatricians to recognize severe or refractory or severe MP early, treat it promptly and prevent the progress of the disease...
June 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28723546/local-modulation-of-antigen-presenting-cell-development-after-resolution-of-pneumonia-induces-long-term-susceptibility-to-secondary-infections
#3
Antoine Roquilly, Hamish E G McWilliam, Cedric Jacqueline, Zehua Tian, Raphael Cinotti, Marie Rimbert, Linda Wakim, Irina Caminschi, Mireille H Lahoud, Gabrielle T Belz, Axel Kallies, Justine D Mintern, Karim Asehnoune, Jose A Villadangos
Lung infections cause prolonged immune alterations and elevated susceptibility to secondary pneumonia. We found that, after resolution of primary viral or bacterial pneumonia, dendritic cells (DC), and macrophages exhibited poor antigen-presentation capacity and secretion of immunogenic cytokines. Development of these "paralyzed" DCs and macrophages depended on the immunosuppressive microenvironment established upon resolution of primary infection, which involved regulatory T (Treg) cells and the cytokine TGF-β...
July 18, 2017: Immunity
https://www.readbyqxmd.com/read/28722366/-large-vessel-vasculitis-pathogenesis-diagnostic-and-medical-management
#4
Alireza Sadrkhah, Jörg D Seebach, Yannick Muller
Large vessels vasculitis includes two diseases : 1) giant cell arteritis, formerly known as Horton's arteritis and 2) Takayasu arteritis. In this article, we will describe and compare the epidemiology, pathogenesis, diagnostic criteria and medical management of both vasculitis. T helper (Th) 1 and Th17 responses, genetic links and the role of viral (varicella zoster) and bacterial infection (Mycoplasma pneumoniae or Chlamydia pneumoniae) will be discussed. Classification criteria, inflammation biomarkers and progress in imaging tools will also be described...
April 5, 2017: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28708872/nasopharyngeal-microbiota-in-infants-and-changes-during-viral-upper-respiratory-tract-infection-and-acute-otitis-media
#5
Tasnee Chonmaitree, Kristofer Jennings, Georgiy Golovko, Kamil Khanipov, Maria Pimenova, Janak A Patel, David P McCormick, Michael J Loeffelholz, Yuriy Fofanov
BACKGROUND: Interferences between pathogenic bacteria and specific commensals are known. We determined the interactions between nasopharyngeal microbial pathogens and commensals during viral upper respiratory tract infection (URI) and acute otitis media (AOM) in infants. METHODS: We analyzed 971 specimens collected monthly and during URI and AOM episodes from 139 infants. The 16S rRNA V4 gene regions were sequenced on the Illumina MiSeq platform. RESULTS: Among the high abundant genus-level nasopharyngeal microbiota were Moraxella, Haemophilus, and Streptococcus (3 otopathogen genera), Corynebacterium, Dolosigranulum, Staphylococcus, Acinetobacter, Pseudomonas, and Bifidobacterium...
2017: PloS One
https://www.readbyqxmd.com/read/28705941/tyk2-as-a-target-for-immune-regulation-in-human-viral-bacterial-pneumonia
#6
Johanna Berg, Katja Zscheppang, Diana Fatykhova, Mario Tönnies, Torsten T Bauer, Paul Schneider, Jens Neudecker, Jens C Rückert, Stephan Eggeling, Maria Schimek, Achim D Gruber, Norbert Suttorp, Stefan Hippenstiel, Andreas C Hocke
The severity and lethality of influenza A virus (IAV) infections is frequently aggravated by secondary bacterial pneumonia. However, the mechanisms in human lung tissue that provoke this increase in fatality are unknown and therapeutic immune modulatory options are lacking.We established a human lung ex vivo co-infection model to investigate innate immune related mechanisms contributing to the susceptibility of secondary pneumococcal pneumonia.We revealed that type I and III interferon (IFN) inhibits Streptococcus pneumoniae-induced interleukin (IL)-1β release...
July 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28697267/back-to-the-basics-community-acquired-pneumonia-in-children
#7
Kathleen Boyd
Community-acquired pneumonia (CAP) is a common childhood infection and often a reason for inpatient admission, especially when a child is hypoxic or in respiratory distress. Despite advances in technology and diagnostics, it remains difficult to accurately differentiate bacterial CAP from a viral process. Most of the laboratory tests routinely done in inpatient medicine, such as complete blood counts and acute phase reactants, do little to differentiate a viral pneumonia from a bacterial pneumonia. Clinicians must rely heavily on the clinical presentation and decide whether to treat empirically with antibiotics...
July 1, 2017: Pediatric Annals
https://www.readbyqxmd.com/read/28690868/mirna-200c-3p-is-crucial-in-acute-respiratory-distress-syndrome
#8
Qiang Liu, Jianchao Du, Xuezhong Yu, Jun Xu, Fengming Huang, Xiaoyun Li, Cong Zhang, Xiao Li, Jiahui Chang, Daozhen Shang, Yan Zhao, Mingyao Tian, Huijun Lu, Jiantao Xu, Chang Li, Huadong Zhu, Ningyi Jin, Chengyu Jiang
Influenza infection and pneumonia are known to cause much of their mortality by inducing acute respiratory distress syndrome (ARDS), which is the most severe form of acute lung injury (ALI). Angiotensin-converting enzyme 2 (ACE2), which is a negative regulator of angiotensin II in the renin-angiotensin system, has been reported to have a crucial role in ALI. Downregulation of ACE2 is always associated with the ALI or ARDS induced by avian influenza virus, severe acute respiratory syndrome-coronavirus, respiratory syncytial virus and sepsis...
2017: Cell Discovery
https://www.readbyqxmd.com/read/28687247/bacterial-and-viral-pneumonia-new-insights-from-the-drakenstein-child-health-study
#9
REVIEW
Heather J Zar
Pneumonia remains the major cause of childhood morbidity and mortality globally, despite improved preventative strategies. Increasing evidence also links early life pneumonia with the development of chronic non-communicable respiratory diseases into childhood and adulthood. The Drakenstein Child Health Study is a unique, multidisciplinary, South African birth cohort, investigating the incidence, risk factors, aetiology and long term impact of early life pneumonia on child health. The study provides novel data showing a high incidence of pneumonia despite excellent immunisation coverage; that pneumonia is due to multiple pathogens; that dysbiosis of the nasopharyngeal flora precedes and predisposes to pneumonia; and that early life pneumonia results in reduced lung function...
June 11, 2017: Paediatric Respiratory Reviews
https://www.readbyqxmd.com/read/28685493/peripheral-neuropathy-episodic-rhabdomyolysis-and-hypoparathyroidism-in-a-patient-with-mitochondrial-trifunctional-protein-deficiency
#10
Peter van Vliet, Annelies E Berden, Mojca K M van Schie, Jaap A Bakker, Christian Heringhaus, Irenaeus F M de Coo, Mirjam Langeveld, Marielle A Schroijen, M Sesmu Arbous
A combination of unexplained peripheral neuropathy, hypoparathyroidism, and the inability to cope with metabolic stress could point to a rare inborn error of metabolism, such as mitochondrial trifunctional protein (MTP) deficiency.Here, we describe a 20-year-old woman who was known since childhood with axonal motor sensory polyneuropathy of unknown origin. She presented with progressive dyspnoea, and increased muscle weakness, preceded by 6 days of fever, vomiting, and diarrhoea. Laboratory testing showed rhabdomyolysis, and hypocalcaemia with low parathyroid levels...
July 7, 2017: JIMD Reports
https://www.readbyqxmd.com/read/28660356/community-acquired-lower-respiratory-tract-infections-in-hiv-infected-patients-on-antiretroviral-therapy-predictors-in-a-contemporary-cohort-study
#11
Cristiane C Lamas, Lara E Coelho, Beatriz J Grinsztejn, Valdilea G Veloso
Community-acquired pneumonia represents the most frequent bacterial infection in patients with HIV/AIDS. PURPOSE: We aimed to assess variables associated with lower respiratory tract infection (LRTI) among HIV-infected adults using ART. METHODS: A cohort study of HIV-infected patients aged ≥18 years, enrolled from 2000 to 2015, on ART for at least 60 days, with primary outcome as the 1st episode of LRTI during follow-up. The independent variables included were sex at birth, age, race/skin color, educational level, tobacco smoking, alcohol use, cocaine use, diabetes mellitus, CD4 count, HIV viral load, influenza and pneumococcal vaccination...
June 28, 2017: Infection
https://www.readbyqxmd.com/read/28656006/clinical-characteristics-of-influenza-associated-pneumonia-of-adults-clinical-features-and-factors-contributing-to-severity-and-mortality
#12
Takashi Ishiguro, Naho Kagiyama, Ryuji Uozumi, Kyuto Odashima, Yotaro Takaku, Kazuyoshi Kurashima, Satoshi Morita, Noboru Takayanagi
Background: Pneumonia is a major complication of influenza that contributes to mortality. Clinical characteristics and factors of influenza virus contributing to the severity and mortality of pneumonia have not been fully elucidated. Objective: The objective was to clarify clinical characteristics and factors contributing to the severity and mortality of influenza-associated pneumonia (flu-p). Methods: We retrospectively analyzed patients with flu-p. Results: From December 1999 to March 2016, 210 patients with a median age of 69 (range, 17 to 92) years with flu-p based on positive rapid antigen tests, increased antibody titers of paired sera, or positive results of reverse transcription polymerase chain reaction were admitted to our institution...
June 2017: Yale Journal of Biology and Medicine
https://www.readbyqxmd.com/read/28649744/mannose-binding-lectin-deficient-donors-increase-the-risk-of-bacterial-infection-and-bacterial-infection-related-mortality-after-liver-transplantation
#13
J Lombardo, G Sanclemente, J Colmenero, M Español-Rego, M T Arias, P Ruiz, E Mauro, L Sastre, G Crespo, A Rimola, A Moreno, F Lozano, M Navasa
Mannose-binding lectin (MBL) is synthesized by the liver and binds to microbes. MBL2 gene polymorphisms produce intermediate/low/null- or normal-MBL serum levels (MBL-deficient or MBL-sufficient phenotypes, respectively). We aimed to evaluate the incidence and severity of infection, rejection and survival within 1 year after liver transplantation (LT) according to donor and recipient MBL2 gene polymorphisms. A repeated-event analysis for infection episodes (negative binomial regression, Andersen-Gill model) was performed in 240 LT...
June 26, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28628024/-evaluation-of-dynamic-telomere-length-shortening-of-lymphocytes-in-immunocompromised-children-with-chronic-diseases-of-the-respiratory
#14
E Khalturina, I Nesterova
Nowadays it is common to observe the growth of viral-viral and viral-bacterial co-infections in children of different ages, due to dysfunction of lymphocytes (DL), which can be connected with the process of the accelerated shortening of the end structures of chromosomal telomeres, telomere length changes are described in lymphocytes of children with chronic mono-infections. The conducted study has shown the shortening of telomere lymphocytes in children with CDRT seropositive for mixed-herpes viral infections (herpes simplex virus, virus, Epstein-Barr virus and cytomegalovirus in various combinations) and for bacterial co-infections - Chlamydia trachomatis and (or) Mycoplasma pneumoniae...
May 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28619153/identification-of-candidate-protein-markers-of-bovine-parainfluenza-virus-type-3-infection-using-an-in-vitro-model
#15
Darren W Gray, Michael D Welsh, Simon Doherty, Mark H Mooney
Bovine Parainfluenza Virus Type 3 (BPI3V) infections are often asymptomatic, causing respiratory tissue damage and immunosuppression, predisposing animals to severe bacterial pneumonia, the leading cause of Bovine Respiratory Disease (BRD) mortality. As with many pathogens, routine BPI3V serology does not indicate the presence of damaged respiratory tissue or active infection. In vitro proteomic marker screening using disease relevant cell models could help identify markers of infection and tissue damage that are also detectable during in vivo infections...
May 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28617860/increasing-prevalence-of-infectious-diseases-in-asylum-seekers-at-a-tertiary-care-hospital-in-switzerland
#16
Constantine Bloch-Infanger, Veronika Bättig, Jürg Kremo, Andreas F Widmer, Adrian Egli, Roland Bingisser, Manuel Battegay, Stefan Erb
OBJECTIVE: The increasing number of refugees seeking asylum in Europe in recent years poses new challenges for the healthcare systems in the destination countries. The goal of the study was to describe the evolution of medical problems of asylum seekers at a tertiary care centre in Switzerland. METHODS: At the University Hospital Basel, we compared all asylum seekers during two 1-year time periods in 2004/05 and 2014/15 concerning demographic characteristics and reasons for referrals and hospitalizations...
2017: PloS One
https://www.readbyqxmd.com/read/28616745/bacterial-meningitis-complicating-the-course-of-liver-cirrhosis
#17
Pasquale Pagliano, Giovanni Boccia, Francesco De Caro, Silvano Esposito
Meningitis is rarely reported in studies investigating bacterial infections in patients affected by liver cirrhosis. We investigated the findings of bacterial meningitis in patients affected by liver cirrhosis referred to our department in a 16-year period. MATERIALS: Patients with cirrhosis and bacterial meningitis were enrolled. Cirrhosis was defined by liver histology or clinical, laboratory, and ultrasonographic and endoscopic findings. Bacterial meningitis was defined by cerebro-spinal fluid pleocytosis (>10/mcl) and characteristic clinical presentation...
June 14, 2017: Infection
https://www.readbyqxmd.com/read/28615935/serum-inflammatory-biomarkers-and-clinical-outcomes-of-copd-exacerbation-caused-by-different-pathogens
#18
Theerasuk Kawamatawong, Apitch Apiwattanaporn, Warisara Siricharoonwong
BACKGROUND AND OBJECTIVE: COPD exacerbation is characterized by worsening of symptoms, warranting change in treatment. Systemic and airway inflammation play roles in the pathogenesis of COPD exacerbation. We hypothesized whether increased serum inflammatory biomarkers are associated with the clinical outcomes of COPD exacerbation caused by different infectious pathogens. METHODS: COPD patients with exacerbation were recruited from a hospital emergency department during 2014-2015...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28580101/highly-specific-and-rapid-glycan-based-amperometric-detection-of-influenza-viruses
#19
Xikai Cui, Amrita Das, Abasaheb N Dhawane, Joyce Sweeney, Xiaohu Zhang, Vasanta Chivukula, Suri S Iyer
Rapid and precise detection of influenza viruses in a point of care setting is critical for applying appropriate countermeasures. Current methods such as nucleic acid or antibody based techniques are expensive or suffer from low sensitivity, respectively. We have developed an assay that uses glucose test strips and a handheld potentiostat to detect the influenza virus with high specificity. Influenza surface glycoprotein neuraminidase (NA), but not bacterial NA, cleaved galactose bearing substrates, 4,7di-OMe N-acetylneuraminic acid attached to the 3 or 6 position of galactose, to release galactose...
May 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/28577241/human-infectious-diseases-and-risk-of-preeclampsia-an-updated-review-of-the-literature
#20
REVIEW
Malihe Nourollahpour Shiadeh, Zahra Behboodi Moghadam, Ishag Adam, Vafa Saber, Maryam Bagheri, Ali Rostami
BACKGROUND: Preeclampsia (PE) is one of the major causes of maternal and perinatal morbidity and mortality, especially in low- and middle-income countries. In recent years, a growing body of literatures suggests that infections by bacteria, viruses, and parasites and their related inflammations play an important role in the pathogenesis of PE. METHODS: We searched PubMed, Google scholar, and Cochrane databases using the following search words: "infection and preeclampsia," "bacterial infection and preeclampsia," "viral infection and preeclampsia" and "parasitic infection and preeclampsia...
June 2, 2017: Infection
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