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Pulmonary infection

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https://www.readbyqxmd.com/read/29055116/inhaled-cryptococcus-neoformans-elicits-allergic-airway-inflammation-independent-of-nf%C3%AE%C2%BAb-signaling-in-lung-epithelial-cells
#1
Andrew J McDermott, Tyler A Tumey, Mingwei Huang, Christina M Hull, Bruce S Klein
Pulmonary challenge with the ubiquitous fungus Cryptococcus neoformans results in allergic airway inflammation (AAI) characterized by robust recruitment of eosinophils and T-cells producing type 2 cytokines to the lungs. Previous studies have demonstrated a critical role for NFκB activation within lung epithelial cells (LECs) in driving AAI in response to protein allergens, yet the role of LEC-intrinsic NFκB in promoting AAI following exposure to C. neoformans is poorly understood. To investigate the role of LEC-intrinsic NFκB in promoting AAI following C...
October 20, 2017: Immunology
https://www.readbyqxmd.com/read/29054943/non-infectious-aortitis-in-an-immunosuppressed-renal-transplant-recipient-with-iga-nephropathy
#2
Charlotte M Snead, Stephen C Crockett, Phillippa K Bailey
A 54-year-old woman presented with atypical chest pain, fever and malaise. She was immunosuppressed with three agents following a living-donor kidney transplant 1 year previously. Her native kidney failure was secondary to biopsy-demonstrated crescentic IgA nephropathy, with systemic involvement. A CT pulmonary angiogram revealed an inflammatory cuff of soft tissue around the descending thoracic aorta suggesting aortitis. Inflammatory markers were elevated. Given her immunosuppression, the patient was screened extensively for infective causes and was empirically commenced on intravenous meropenem...
October 19, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29054887/introducing-the-new-bts-guideline-management-of-non-tuberculous-mycobacterial-pulmonary-disease-ntm-pd
#3
EDITORIAL
Charles S Haworth, R Andres Floto
The new BTS Guidelines for the management of non-tuberculous mycobacterial pulmonary disease combine the best available evidence with expert consensus to generate a set of pragmatic Guidelines, published as a supplement to this issue of Thorax, to assist in the management of these challenging infections.
November 2017: Thorax
https://www.readbyqxmd.com/read/29054190/bilateral-internal-thoracic-artery-grafting-in-india-time-to-raise-the-bar
#4
Lokeswara Rao Sajja, Prashanthi Beri
OBJECTIVES: Bilateral internal thoracic artery (BITA) grafting strategy is the current trend in coronary artery bypass grafting for multivessel coronary artery disease. Although better long-term outcomes have been shown, BITA grafting is underutilized as a main strategy for revascularization by most of the surgeons. The survey was conducted to ascertain the current usage and concerns of BITA grafting in India. METHODS: Database of 856 Indian cardiac surgeons currently with predominantly adult practice was prepared and a questionnaire was sent about use of single and bilateral ITA grafts and BITA grafting strategy in different clinical scenarios...
September 2017: Indian Heart Journal
https://www.readbyqxmd.com/read/29053748/treatment-with-the-nr4a1-agonist-cytosporone-b-controls-influenza-virus-infection-and-improves-pulmonary-function-in-infected-mice
#5
Benoit Egarnes, Marie-Renée Blanchet, Jean Gosselin
The transcription factor NR4A1 has emerged as a pivotal regulator of the inflammatory response and immune homeostasis. Although contribution of NR4A1 in the innate immune response has been demonstrated, its role in host defense against viral infection remains to be investigated. In the present study, we show that administration of cytosporone B (Csn-B), a specific agonist of NR4A1, to mice infected with influenza virus (IAV) reduces lung viral loads and improves pulmonary function. Our results demonstrate that administration of Csn-B to naive mice leads to a modest production of type 1 IFN...
2017: PloS One
https://www.readbyqxmd.com/read/29053080/aerosolizing-lipid-dispersions-enables-antibiotic-transport-across-mimics-of-the-lung-airway-surface-even-in-the-presence-of-pre-existing-lipid-monolayers
#6
Steven V Iasella, Amy Z Stetten, Timothy E Corcoran, Stephen Garoff, Todd M Przybycien, Robert D Tilton
BACKGROUND: Secondary lung infections are the primary cause of morbidity associated with cystic fibrosis lung disease. Aerosolized antibiotic inhalation is potentially advantageous but has limited effectiveness due to altered airway aerodynamics and deposition patterns that limit drug access to infected regions. One potential strategy to better reach infected areas is to formulate aerosols with surfactants that induce surface tension gradients and drive postdeposition drug dispersal via Marangoni transport along the airway surface liquid (ASL)...
October 20, 2017: Journal of Aerosol Medicine and Pulmonary Drug Delivery
https://www.readbyqxmd.com/read/29052770/extrapulmonary-involvement-in-pediatric-tuberculosis
#7
REVIEW
Supika Kritsaneepaiboon, Mariaem M Andres, Vincent R Tatco, Cielo Consuelo Q Lim, Nathan David P Concepcion
Tuberculosis in childhood is clinically challenging, but it is a preventable and treatable disease. Risk factors depend on age and immunity status. The most common form of pediatric tuberculosis is pulmonary disease, which comprises more than half of the cases. Other forms make up the extrapulmonary tuberculosis that involves infection of the lymph nodes, central nervous system, gastrointestinal system, hepatobiliary tree, and renal and musculoskeletal systems. Knowledge of the imaging characteristics of pediatric tuberculosis provides clues to diagnosis...
September 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/29052567/interventional-bronchoscopic-therapy-in-adult-patients-with-tracheobronchial-mucoepidermoid-carcinoma
#8
Hui Chen, Jie Zhang, Xiao-Jian Qiu, Juan Wang, Ying-Hua Pei, Yu-Ling Wang
BACKGROUND: Tracheobronchial mucoepidermoid carcinoma (MEC) is a rare airway tumor in adults for which surgery is considered a first-line treatment. However, some patients already lost the best opportunity of a surgical intervention when diagnoses are confirmed, and surgery causes considerable trauma resulting in partial loss of pulmonary function. Moreover, the tumor is resistant to radiotherapy and chemotherapy. These factors make the treatment of tracheobronchial MEC challenging. This study aimed to evaluate the safety and efficacy of interventional bronchoscopic therapy in adult patients with tracheobronchial MEC...
October 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/29052333/label-free-quantitative-proteomic-analysis-of-differentially-expressed-membrane-proteins-of-pulmonary-alveolar-macrophages-infected-with-highly-pathogenic-porcine-reproductive-and-respiratory-syndrome-virus-and-its-attenuated-strain
#9
Zehui Qu, Fei Gao, Liwei Li, Yujiao Zhang, Yifeng Jiang, Lingxue Yu, Yanjun Zhou, Hao Zheng, Wu Tong, Guoxin Li, Guangzhi Tong
Significant differences exist between the highly pathogenic (HP) porcine reproductive and respiratory syndrome virus (PRRSV) and its attenuated pathogenic (AP) strain in the ability to infect host cells. The mechanisms by which different virulent strains invade host cells remain relatively unknown. In this study, pulmonary alveolar macrophages (PAMs) were infected with HP-PRRSV (HuN4) and AP-PRRSV (HuN4-F112) for 24 h, then harvested and subjected to label-free quantitative mass spectrometry. A total of 2849 proteins were identified, including 95 that were differentially expressed...
October 20, 2017: Proteomics
https://www.readbyqxmd.com/read/29052141/murine-gammaherpesvirus-68-a-small-animal-model-for-gammaherpesvirus-associated-diseases
#10
Sihan Dong, J Craig Forrest, Xiaozhen Liang
Murine gammaherpesvirus 68 (MHV68) is a naturally occurring pathogen of murid rodents that is genetically related to the human gammaherpesviruses Epstein-Barr virus (EBV) and Kaposi sarcoma-associated herpesvirus (KSHV). Viral, immunologic, and disease parameters following experimental infection of laboratory mice with MHV68 closely resemble what occurs during primary EBV infection of humans, which suggests that MHV68 infection of mice offers a small animal model to study in general the pathogenesis of gammaherpesvirus infections...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29050778/the-expressions-and-roles-of-different-forms-of-il-22-in-mycobacterium-tuberculosis-infection
#11
Yuanyuan Liu, Qinfang Ou, Qianqian Liu, Yan Gao, Jing Wu, Bingyan Zhang, Xinhua Weng, Lingyun Shao, Wenhong Zhang
Despite evidence suggesting an anti-Mycobacterium tuberculosis effector function of CD4+ T cells that produce and retain IL-22 in macaques, the general role of IL-22 in tuberculosis infection is still poorly characterized. To explore the immune mechanism in the pathogenesis of tuberculosis in humans, here we evaluated different forms of IL-22 in populations with different tuberculosis infection statuses. We enrolled 156 subjects including 49 patients with pulmonary tuberculosis, 27 patients with tuberculous pleurisy (TPE), 38 individuals with latent tuberculous infection (LTBI) and 42 healthy controls (HC)...
December 2017: Tuberculosis
https://www.readbyqxmd.com/read/29050771/host-blood-rna-signatures-predict-the-outcome-of-tuberculosis-treatment
#12
Ethan G Thompson, Ying Du, Stephanus T Malherbe, Smitha Shankar, Jackie Braun, Joe Valvo, Katharina Ronacher, Gerard Tromp, David L Tabb, David Alland, Shubhada Shenai, Laura E Via, James Warwick, Alan Aderem, Thomas J Scriba, Jill Winter, Gerhard Walzl, Daniel E Zak
Biomarkers for tuberculosis treatment outcome will assist in guiding individualized treatment and evaluation of new therapies. To identify candidate biomarkers, RNA sequencing of whole blood from a well-characterized TB treatment cohort was performed. Application of a validated transcriptional correlate of risk for TB revealed symmetry in host gene expression during progression from latent TB infection to active TB disease and resolution of disease during treatment, including return to control levels after drug therapy...
December 2017: Tuberculosis
https://www.readbyqxmd.com/read/29050758/identification-of-mycobacterial-bacterioferritin-b-for-immune-screening-of-tuberculosis-and-latent-tuberculosis-infection
#13
Xinyu Yang, Jia-Bao Wu, Ying Liu, Yanqing Xiong, Ping Ji, Shu-Jun Wang, Yingying Chen, Guo-Ping Zhao, Shui-Hua Lu, Ying Wang
OBJECTIVES: It remains necessary and urgent to search for novel mycobacterial antigens to increase the sensitivity and specificity for tuberculosis (TB) diagnosis and latent TB infection (LTBI) screening. Antigens capable of inducing strong immune responses during Mycobacterium tuberculosis (M.tb) infection would be good candidates. METHODS: Cellular responses specific to M.tb derived bacterioferritin B (BfrB) were assessed by IFN-γ ELISPOT in three human cohorts, including healthy controls (HCs), LTBI population and pulmonary TB (PTB) patients...
December 2017: Tuberculosis
https://www.readbyqxmd.com/read/29050672/genetic-diversity-of-multidrug-resistant-mycobacterium-tuberculosis-strains-isolated-from-tuberculosis-patients-in-iran-using-miru-vntr-technique
#14
Azar Dokht Khosravi, Abdolrazagh Hashemi Shahraki, Soolmaz Khandan Dezfuli, Mohammad Hashemzadeh, Hamed Goodarzi, Parviz Mohajeri
Tuberculosis (TB) is considered as one of the most important infectious diseases in the world, and recent rise and spread of multidrug-resistant (MDR) Mycobacterium tuberculosis (MTB) strains, have made the matter worsened. Due to the importance of TB prevalence in Iran, this study was designed to investigate the genetic diversity among MDR strains of MTB by MIRU-VNTR typing scheme. A total of 88 drug resistant M. tuberculosis isolates belong to pulmonary TB cases were collected from several TB reference centers of Iran...
November 2017: Kaohsiung Journal of Medical Sciences
https://www.readbyqxmd.com/read/29050167/-serum-procalcitonin-in-patients-with-pulmonary-infection-and-central-nervous-system-injury
#15
J C Li, L Y Wang, Y F Wang, M H Mei, L Shi, M L Yao, X D Guan, B Ouyang
Objective: To evaluate the influence of serum procalcitonin in the diagnosis and treatment of pulmonary infection in patients with central nervous system injury. Methods: From October 2014 to February 2017, a retrospective study was performed. A total of 1 852 patients were screened in Department of Intensive Care Unite, First Affiliated Hospital of Sun Yat-sen University.Among them, 173 patients were identified with different kinds of infection. Finally, a total of 42 patients with pulmonary infection were enrolled...
October 10, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29050127/-immune-related-pneumonitis-caused-by-programmed-death-1-inhibitor-pembrolizumab-a-case-report-and-literature-review
#16
Y L Chen, J Zhao, R Jia, H Y Wang, J Zheng, C Q Bai, M Z Wang, J M Xu
Objective: To investigate the risk factors, clinical manifestations, radiological features, diagnosis, treatment and prognosis of immune-related pneumonitis caused by programmed death-1(PD-1)/PD-L1 inhibitors. Methods: The clinical data of immune-related pneumonitis caused by PD-1 inhibitor Pembrolizumab in a patient with advanced esophageal carcinoma admitted to the 307(th) Hospital of Chinese People's Liberation Army was retrospectively analyzed and the related literatures were reviewed. We searched Medline database using the keywords"PD-1 inhibitor","PD-L1 inhibitor","Pembrolizumab","Nivolumab","Atezolizumab"combined with"Pneumonitis"by Mar 31, 2017...
October 12, 2017: Chinese Journal of Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/29049527/quadruple-valve-infective-endocarditis-caused-by-abiotrophia-defectiva
#17
Mislav Planinc, Marko Kutlesa, Bruno Barsic, Igor Rudez
Quadruple-valve endocarditis is a challenging condition, for which there is limited treatment experience and poor overall survival. We report the first case caused by Abiotrophia defectiva that has been surgically treated both with the replacement of the aortic and pulmonary valves and the repair of the mitral and tricuspid valves with a good outcome. The patient's clinical course is described and a review of literature on this rare causative agent is given.
July 19, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29049234/case-report-features-of-hand-foot-and-mouth-disease-in-neonates
#18
Wen-Wen Chen, Zhao-Bin Yang, Lian-Shu Lian, Li-Ping Xu
RATIONALE: Hand, foot and mouth disease (HFMD) is caused by enterovirus. The virus may exist in secretions. PATIENT CONCERNS: Five neonates had symptoms of fever and maculopapular rashes involving face, trunk, breech, arms, and legs, especially scattering on palms and feet. Blood, oropharyngeal fluid, urine, and cerebrospinal fluid (CSF) samples were collected and detected for further diagnoses with the consent of the infants' parents. Some of them suffered aseptic meningitis...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29049207/cutaneous-mucormycosis-in-a-patient-with-lupus-nephritis-a-case-report-and-review-of-literature
#19
Wenrong Cheng, Guoqin Wang, Min Yang, Lijun Sun, Hongrui Dong, Yipu Chen, Hong Cheng
RATIONALE: Mucormycosis is a rare fungal infection but life-threatening, especially in lupus nephritis (LN). Mucormycosis may manifest as rhino-orbital-cerebral, pulmonary, cutaneous, gastrointestinal, renal, or disseminated forms. PATIENT CONCERNS: We report a case of a 52-year-old woman with cutaneous mucormycosis infection who was admitted because of LN. DIAGNOSES: Histopathological analysis of the lesion confirmed the Rhizopus microspores from the family Mucoraceae...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29049195/the-efficacy-of-combined-intra-articular-and-intravenous-tranexamic-acid-for-blood-loss-in-primary-total-knee-arthroplasty-a-meta-analysis
#20
Zhao Wang, Xiaofei Shen
BACKGROUND: This meta-analysis aimed to illustrate the efficacy and safety of combined topical and intravenous (IV) tranexamic acid (TXA) for blood loss control in primary total knee arthroplasty (TKA) patients. METHODS: In April 2017, a systematic computer-based search was conducted in PubMed, EMBASE, Web of Science, Cochrane Database of Systematic Reviews, and Google database. Data on patients prepared for TKA surgery in studies that compared combined topical and IV TXA versus placebo, topical, or IV TXA alone were retrieved...
October 2017: Medicine (Baltimore)
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