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Atypical pneumonia

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https://www.readbyqxmd.com/read/28648271/50-years-ago-in-the-journal-of-pediatrics-primary-atypical-pneumonia-an-epidemic-caused-by-mycoplasma-pneumoniae
#1
Sarah S Long
No abstract text is available yet for this article.
July 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28637873/disease-linked-mutations-in-factor-h-reveal-pivotal-role-of-cofactor-activity-in-self-surface-selective-regulation-of-complement-activation
#2
Heather Kerr, Edwin Wong, Elisavet Makou, Yi Yang, Kevin Marchbank, David Kavanagh, Anna Richards, Andrew P Herbert, Paul N Barlow
Spontaneous activation enables the complement system to respond very rapidly to diverse threats. Activation is efficiently suppressed by complement factor H (CFH) on self surfaces but not foreign surfaces. The surface selectivity of CFH, a soluble protein containing 20 CCP modules (CCPs 1-20), may be compromised by disease-linked mutations. Which of the several functions of CFH drives its self-surface selectivity remains unknown. We made human CFH mutants in Pichia pastoris. In benchmark studies of CCP-1 variants, recombinant I62-CFH (protective against age-related macular degeneration) and V62-CFH functioned equivalently, matching or outperforming plasma-derived CFH while R53H-CFH, linked to atypical haemolytic uraemic syndrome (aHUS), was defective in C3bBb decay-accelerating activity (DAA) and factor I-cofactor activity (CA)...
June 21, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28599867/macrolide-therapy-for-community-acquired-pneumonia-due-to-atypical-pathogens-outcomes-assessment-at-an-early-time-point
#3
Thomas M File, Paul B Eckburg, George H Talbot, Lily Llorens, H David Friedland
BACKGROUND: Therapy directed against atypical pathogens in patients with community-acquired pneumonia (CAP) is often recommended. This post-hoc analysis evaluated the effect of addition of a macrolide to ceftaroline fosamil or ceftriaxone treatment in atypical CAP. METHODS: Two phase 3, double-blind, comparative safety and efficacy studies of ceftaroline fosamil vs. ceftriaxone, FOCUS 1 and FOCUS 2, enrolled adults with CAP. Only FOCUS 1 included 24-h adjunctive clarithromycin therapy for all patients on day 1...
June 6, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28592028/-analysis-of-12-cases-of-exogenous-lipoid-pneumonia-confirmed-by-pathology
#4
Y X Wang, F Fang, Y F Guo, Y M Li, T Y Sun, M Zhang, J Chen, B M Fang
Objective: To study the etiological, clinical, radiological, diagnostic, therapeutic, and prognostic manifestations of exogenous lipoid pneumonia (ELP), and therefore to improve the diagnosis and treatment of this disease. Methods: The clinical data of 12 cases of ELP confirmed by pathology were retrospectively analyzed. Results: The patients consisted of 9 males and 3 females, with an average age of 73.8 years (range, 44 to 100 years). The underlying diseases were variable, including diseases affecting the general condition (multiple organ failure, chronic heart and renal insufficiency, pemphigoid, etc) and conditions with increased risk of aspiration (sequelae of cerebrovascular disease, Alzheimer's disease, advanced stage of nasopharyngeal carcinoma, paralytic ileus, etc)...
June 12, 2017: Chinese Journal of Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/28591035/a-case-report-of-lymphoid-intestitial-pneumonia-in-common-variable-immunodeficiency-oligoclonal-expansion-of-effector-lymphocytes-with-preferential-cytomegalovirus-specific-immune-response-and-lymphoproliferative-disease-promotion
#5
Przemyslaw Zdziarski, Andrzej Gamian, Grzegorz Dworacki
RATIONALE: Lymphoid interstitial pneumonia (LIP) is a rare disease with lymphocytic infiltration of the alveolar interstitial and air spaces, sometimes classified as a clonal lymphoproliferative disease (LPD) with high prevalence in patients with immunodysregulation. Although association of mucosa-associated lymphoid tissue (MALT) lymphoma development with infectious agents has been well described, it is not so in the case of LIP. Attempts to demonstrate an infective cause by direct microbe detection have failed, but association with atypical specific immune response to opportunistic infectious agent has not been studied...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28576117/clinical-failure-with-and-without-empiric-atypical-bacteria-coverage-in-hospitalized-adults-with-community-acquired-pneumonia-a-systematic-review-and-meta-analysis
#6
Khalid Eljaaly, Samah Alshehri, Ahmed Aljabri, Ivo Abraham, Mayar Al Mohajer, Andre C Kalil, David E Nix
BACKGROUND: Both typical and atypical bacteria can cause community-acquired pneumonia (CAP); however, the need for empiric atypical coverage remains controversial. Our objective was to evaluate the impact of antibiotic regimens with atypical coverage (a fluoroquinolone or combination of a macrolide/doxycycline with a β-lactam) to a regimen without atypical antibiotic coverage (β-lactam monotherapy) on rates of clinical failure (primary endpoint), mortality, bacteriologic failure, and adverse events, (secondary endpoints)...
June 2, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28573444/lung-lesions-during-fever-of-unknown-origin
#7
Renata Krupa, Tadeusz M Zielonka, Malgorzata Hadzik-Blaszczyk, Kazimierz A Wardyn, Katarzyna Zycinska
Fever of unknown origin (FUO) remains one of the most difficult diagnostic challenges. The causes of FUO can be various diseases located in different organs. The aim of the study was to determine the prevalence and nature of pulmonary lesions during FUO. One hundred and sixty one patients with FUO participated in this prospective study. We performed a detailed comprehensive history, physical examination, and a wide spectrum of tests. The most common causes of FUO were infections (39%), autoimmune conditions (28%), and neoplasms (17%)...
June 2, 2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28560041/severe-acute-asthma-caused-by-chlamydophila-pneumoniae-infection
#8
Yoshinari Endo, Toshihiro Shirai, Mika Saigusa, Eisuke Mochizuki
Asthma exacerbation is associated with respiratory infections, including those by viruses and atypical bacteria. We herein report a case of severe acute asthma in an adult caused by Chlamydophila pneumoniae (C. pneumoniae) infection. A 39-year-old woman without a history of asthma reported to the emergency department with progressive worsening of cough, shortness of breath, and wheezing with low oxygen saturation. A computed tomography (CT) scan revealed patchy ground-glass opacity and bronchial wall thickening...
July 2017: Respirology Case Reports
https://www.readbyqxmd.com/read/28553017/capsular-polysaccharide-is-a-main-component-of-mycoplasma-ovipneumoniae-in-the-pathogen-induced-toll-like-receptor-mediated-inflammatory-responses-in-sheep-airway-epithelial-cells
#9
Zhongjia Jiang, Fuyang Song, Yanan Li, Di Xue, Guangcun Deng, Min Li, Xiaoming Liu, Yujiong Wang
Mycoplasma ovipneumoniae (M. ovipneumoniae) is characterized as an etiological agent of primary atypical pneumonia that specifically infects sheep and goat. In an attempt to better understand the pathogen-host interaction between the invading M. ovipneumoniae and airway epithelial cells, we investigated the host inflammatory responses against capsular polysaccharide (designated as CPS) of M. ovipneumoniae using sheep bronchial epithelial cells cultured in an air-liquid interface (ALI) model. Results showed that CPS derived from M...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28543859/pustular-erythema-multiforme-major-associated-with-atypical-pneumonia
#10
R Wolf, S Ständer, O Well, L Frey, I Klier, S Brunner, M Flaig, A Wollenberg, T Ruzicka
A 52-year-old male patient presented to the hospital with severe difficulties swallowing, sore eyes and an asymptomatic skin rash. The patient was fully oriented, vital signs were normal. Two days before admission to the hospital, the referring physician had suspected an upper respiratory tract infection and had started treatment with oral cefuroxime while also prescribing ibuprofen for sore throat. This article is protected by copyright. All rights reserved.
May 23, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28533471/the-atypical-response-regulator-atvr-is-a-new-player-in-pseudomonas-aeruginosa-response-to-hypoxia-and-virulence
#11
Gilberto Hideo Kaihami, Leandro Carvalho Dantas Breda, José Roberto Fogaça de Almeida, Thays de Oliveira Pereira, Gianlucca Gonçalves Nicastro, Ana Laura Boechat, Sandro Rogério de Almeida, Regina Lúcia Baldini
Two-component systems are widespread in bacteria, allowing adaptation to environmental changes. The classical pathway is composed by a histidine kinase that phosphorylates an aspartate residue in the cognate response regulator (RR). RRs lacking the phosphorylable aspartate also occur, but their function and contribution during host-pathogen interaction are poorly characterized. AtvR (PA14_26570) is the only atypical response regulator with a DNA-binding domain in the opportunistic pathogen Pseudomonas aeruginosa Macrophage infection with the atvR mutant strain resulted in higher TNF-α secretion as well as increased bacterial clearance as compared to macrophages infected with the wild-type strain...
May 22, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28529053/unusual-intra-parenchymal-pontomedullary-epidermoid-cyst-in-a-2-year-old-case-report-and-literature-review
#12
Anan Shtaya, Bassam Dabbous, Evgenia Fanou, Leslie Bridges, Samantha Hettige
BACKGROUND: Intrinsic brainstem epidermoid cysts are rare, benign, slow growing lesions. Their eloquence preclude complete excision, however subtotal resection will often result in prolonged or sometimes permanent relief of presenting symptoms and signs. We describe an unusual case and review the literature of this pathology in the paediatric population. CASE DESCRIPTION: We report an intra-axial pontine epidermoid cyst in a 2-year-old girl who presented with developmental delay, multiple cranial nerve palsies and pneumonia...
May 18, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28526018/infection-mediated-asthma-etiology-mechanisms-and-treatment-options-with-focus-on-chlamydia-pneumoniae-and-macrolides
#13
REVIEW
Wilmore C Webley, David L Hahn
Asthma is a chronic respiratory disease characterized by reversible airway obstruction and airway hyperresponsiveness to non-specific bronchoconstriction agonists as the primary underlying pathophysiology. The worldwide incidence of asthma has increased dramatically in the last 40 years. According to World Health Organization (WHO) estimates, over 300 million children and adults worldwide currently suffer from this incurable disease and 255,000 die from the disease each year. It is now well accepted that asthma is a heterogeneous syndrome and many clinical subtypes have been described...
May 19, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28515602/respiratory-multiplex-polymerase-chain-reaction-an-important-diagnostic-tool-in-immunocompromised-patients
#14
Amarjeet Kaur, Navin Kumar, Sharmila Sengupta, Yatin Mehta
BACKGROUND: Viruses and atypical pathogens can cause significant respiratory illness in immunocompromised patients. Multiplex polymerase chain reaction (MPCR) has improved the diagnostic yield of pathogens, and it is easier to identify the co-infections also. The present study was done to evaluate the performance of MPCR on bronchoalveolar lavage (BAL) samples in immunocompromised patients. METHODS: Atotal of 177 BAL specimens collected over a 19 months period from immunocompromised patients with respiratory illness were analyzed with the MPCR and aerobic culture...
April 2017: Indian Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/28507089/atypical-pneumonia-due-to-human-bocavirus-in-an-immunocompromised-patient
#15
Kaien Gu, Paul Van Caeseele, Kerry Dust, Julie Ho
No abstract text is available yet for this article.
May 15, 2017: CMAJ: Canadian Medical Association Journal, Journal de L'Association Medicale Canadienne
https://www.readbyqxmd.com/read/28475737/evolution-of-acute-infection-with-atypical-bacteria-in-a-prospective-cohort-of-children-with-community-acquired-pneumonia-receiving-amoxicillin
#16
Cristiana M Nascimento-Carvalho, Gabriel Xavier-Souza, Ana-Luisa Vilas-Boas, Maria-Socorro H Fontoura, Aldina Barral, Mirja Puolakkainen, Olli Ruuskanen
Background: Atypical bacteria are treatable causative agents of community-acquired pneumonia (CAP). However, there is no conclusive evidence that a child with CAP should receive empirical treatment against such agents. Objectives: We assessed the possibility of association between clinical failure and acute infection by these bacteria among children with CAP treated with amoxicillin. Patients and methods: Patients aged 2-59 months with non-severe CAP received amoxicillin during prospective follow-up...
May 5, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28474627/scrub-typhus-in-uttarakhand-adjoining-uttar-pradesh-seasonality-clinical-presentations-predictors-of-mortality
#17
Anurag Bhargava, Reshma Kaushik, Rajeev Mohan Kaushik, Anita Sharma, Sohaib Ahmad, Minakshi Dhar, Garima Mittal, Sushant Khanduri, Priyannk Pant, Rajesh Kakkar
BACKGROUND & OBJECTIVES: Scrub typhus is a re-emerging mite-borne rickettsiosis, which continues to be underdiagnosed, with lethal consequences. The present study was conducted to determine the seasonality, clinical presentation and predictors of mortality in patients with scrub typhus at a tertiary care teaching hospital in northern India. METHODS: Scrub typhus was suspected in patients attending the hospital as per the standard case definition and serological evidence was obtained by performing an IgM ELISA...
December 2016: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/28443236/a-case-of-intravascular-large-b-cell-lymphoma-of-lung-presenting-with-progressive-multiple-nodules-on-chest-computed-tomography
#18
Hyun Jin Bae, Gyu Rak Chon, Dae Jung Kim, Sun Hun Lee, Jin-Young Ahn
A 71-year-old man was admitted to our hospital for dyspnea, which had worsened over a period of more than six months. He was previously diagnosed as having cryptogenic organizing pneumonia, and was treated with steroids in another hospital. He had complained of worsening dyspnea, despite the treatment. We performed video-assisted thoracoscopic surgery because of the high level of lactate dehydrogenase and inconsistency of the usual interstitial pneumonia pattern. Pathologic specimens showed atypical lymphocytes confined to the pulmonary capillaries...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/28436267/pneumonia-with-pleural-empyema-caused-by-salmonella-typhi-in-an-immunocompetent-child-living-in-a-non-endemic-country
#19
Gwénaëlle Duhil de Bénazé, Emilie Desselas, Véronique Houdouin, Patricia Mariani-Kurkdjian, Ahmed Kheniche, Stéphane Dauger, Géraldine Poncelet, Jean Gaschignard, Michaël Levy
Extra-intestinal complications of Salmonella Typhi (S. Typhi) infections usually occur in endemic countries and in patients with underlying risk conditions. A 14-year-old immunocompetent girl was admitted with respiratory distress owing to S. Typhi pneumonia and pleural empyema. She was a native of Ivory Coast but had lived in France for 4 years and had not travelled abroad for several years. There were no gastro-intestinal symptoms and no S. Typhi carriage was detected in her family. She recovered completely with ceftriaxone and ciprofloxacin and pleural drainage was not required...
April 24, 2017: Paediatrics and International Child Health
https://www.readbyqxmd.com/read/28431934/etiological-analysis-and-epidemiological-comparison-among-adult-cap-and-nhcap-patients-in-okinawa-japan
#20
Gretchen Parrott, Daijiro Nebeya, Takeshi Kinjo, Kazuya Miyagi, Shusaku Haranaga, Futoshi Higa, Masao Tateyama, Jiro Fujita
BACKGROUND: Etiological epidemiology and diagnosis are important issues for CAP and NHCAP. Despite the availability of effective therapies, significant morbidity and mortality ensues. METHODS: We retrospectively analyzed the etiology of 200 pneumonia patients at the University of the Ryukyus Hospital. Patients were categorized into CAP (n = 97) or NHCAP (n = 103), according to the Japanese Respiratory Society guidelines. Diagnoses were made using clinical tests including, Gram stain, bacterial culture, serum and urinary tests...
April 18, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
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