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https://www.readbyqxmd.com/read/29678751/glucagon-like-peptide-1-receptor-signaling-attenuates-rsv-induced-type-2-responses-and-immunopathology
#1
Melissa H Bloodworth, Mark Rusznak, Connor C Pfister, Jian Zhang, Lisa Bastarache, Sandra Alvarez Calvillo, James D Chappell, Kelli L Boyd, Shinji Toki, Dawn C Newcomb, Matthew T Stier, Weisong Zhou, Kasia Goleniewska, Martin L Moore, Tina V Hartert, Kevin D Niswender, R Stokes Peebles
GLP-1R signaling, an emerging anti-inflammatory therapeutic target, attenuated type 2-associated immunopathology in mice infected with a strain of RSV that was isolated from a hospitalized infant with severe lower respiratory tract infection and bronchiolitis.
April 17, 2018: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29678551/anti-respiratory-syncytial-virus-rsv-g-monoclonal-antibodies-reduce-lung-inflammation-and-viral-lung-titers-when-delivered-therapeutically-in-a-balb-c-mouse-model
#2
Hayat Caidi, Congrong Miao, Natalie J Thornburg, Ralph A Tripp, Larry J Anderson, Lia M Haynes
RSV continues to be a high priority for vaccine and antiviral drug development. Unfortunately, no safe and effective RSV vaccine is available and treatment options are limited. Over the past decade, several studies have focused on the role of RSV G protein on viral entry, viral neutralization, and RSV-mediated pathology. Anti-G murine monoclonal antibody (mAb) 131-2G treatment has been previously shown to reduce weight loss, bronchoalveolar lavage (BAL) cell number, airway reactivity, and Th2-type cytokine production in RSV-infected mice more rapidly than a commercial humanized monoclonal antibody (mAb) against RSV F protein (Palivizumab)...
April 17, 2018: Antiviral Research
https://www.readbyqxmd.com/read/29677576/early-mortality-in-scn8a-related-epilepsies
#3
Katrine M Johannesen, Elena Gardella, Ingrid Scheffer, Katherine Howell, Douglas M Smith, Ingo Helbig, Rikke S Møller, Guido Rubboli
SCN8A-related epilepsies are often severe developmental and epileptic encephalopathies. Seizures can be treatment resistant, and patients suffer from severe intellectual disability. Reports have suggested that SCN8A-related epilepsies have a high mortality with SUDEP as the major underlying cause. SUDEP is a catastrophic event, and the risk of occurrence should be correctly and carefully discussed with patients and families. We tested the hypothesis of SUDEP as the main cause of death in SCN8A-related epilepsies by reviewing all the currently reported patients with SCN8A...
April 13, 2018: Epilepsy Research
https://www.readbyqxmd.com/read/29677457/improved-protocol-for-simultaneous-analysis-of-leukocyte-subsets-and-epithelial-cells-from-murine-and-human-lung
#4
Christine Happle, Lena Meyer-Decking, Anika Dreier, Martin Wetzke, Stephanie Gläsener, Ruth Grychtol, Peter Braubach, Alexandra Jablonka, Sibylle Haid, Adan Chari Jirmo, Anika Habener, Jelena Skuljec, Gesine Hansen
PURPOSE: To study and isolate lung cells by flow cytometry, enzymatic digestion and generation of single cell suspensions is required. This significantly influences expression of cellular epitopes and protocols need to be adapted for the best isolation and subsequent analysis of specific cellular subsets. MATERIALS AND METHODS: We optimized protocols for the simultaneous isolation and characterization of specific human and murine lung cell types. For alveolar epithelial cells (AEC), a primarily dispase based digestion method and for leukocytes, a primarily collagenase based technique was adapted...
April 20, 2018: Experimental Lung Research
https://www.readbyqxmd.com/read/29677209/osteopontin-plays-a-pivotal-role-in-increasing-severity-of-respiratory-syncytial-virus-infection
#5
Viviana Sampayo-Escobar, Ryan Green, Michael B Cheung, Raminder Bedi, Subhra Mohapatra, Shyam S Mohapatra
The molecular mechanisms underlying susceptibility to severe respiratory syncytial virus (RSV) infection remain poorly understood. Herein, we report on the role of osteopontin (OPN) in regulation of RSV infection in human epithelial cells and how interleukin-1 beta (IL-1β), a cytokine secreted soon after RSV infection, when persistently expressed can induce OPN expression leading to increased viral infection. We first compared OPN expression in two human epithelial cell lines: HEK-293 and HEp-2. In contrast to HEp-2, HEK-293 expresses low levels of pro-caspase-1 resulting in decreased IL-1β expression in response to RSV infection...
2018: PloS One
https://www.readbyqxmd.com/read/29676635/effects-of-household-air-pollution-in-malawi-and-human-immunodeficiency-virus-status-on-respiratory-symptoms-and-inflammation-injury-and-repair-markers
#6
Charles Kim, Hannah Jary, Kevin Mortimer, Kelly S Schweitzer, Doug Curran-Everett, Stephen Gordon, Irina Petrache
RATIONALE: Household air pollution (HAP) and human immunodeficiency virus (HIV) are associated with increased risk for chronic obstructive pulmonary disease. Both HAP and HIV are widespread in Sub-Saharan Africa, including Malawi, where HIV has 10.6% prevalence in patients 15-49 years old. OBJECTIVES: We hypothesized that HIV infection (HIV+ ) and habitual exposure to HAP (HAP+ ) synergize to cause systemic inflammation and vascular injury, which may herald early onset of chronic respiratory diseases...
April 2018: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/29676630/international-approach-to-environmental-and-lung-health-a-perspective-from-the-fogarty-international-center
#7
Roger I Glass, Joshua P Rosenthal
The global burden of lung disease is substantial, accounting for an estimated 7.5 million deaths per year, approximately 14% of annual deaths worldwide. The prime illnesses include, in descending order, chronic obstructive pulmonary disease, lung cancer, tuberculosis, acute respiratory infections, asthma, and interstitial lung fibrosis. Key risk factors include smoking, both indoor and outdoor air pollution, and occupational exposures. Although the distribution of both the diseases and the risk factors varies greatly by age, geography, and setting, the greatest burden falls on populations living in low- and middle-income countries...
April 2018: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/29676365/rapid-detection-of-respiratory-syncytial-virus-in-community-acquired-lower-respiratory-tract-infections-in-children-by-chromatographic-assay
#8
Surinder Kumar, Bhanu Mehra, Gulshan Rai Sethi, Sanjeev R Saigal
Respiratory syncytial virus (RSV) is the single most important viral agent causing pediatric lower respiratory tract infections (LRTIs) worldwide. To evaluate the role of RSV in pediatric LRTIs, we studied 85 children <2 years of age hospitalized for community-acquired LRTIs. Nasopharyngeal aspirates were obtained on admission for the detection of RSV antigen by immunochromatographic assay. Demographic, clinical, and radiological findings for RSV antigen were compared. Data analysis was performed by Chi-square test...
April 2018: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/29676360/detection-of-immunoglobulin-m-and-immunoglobulin-g-antibodies-to-mycoplasma-pneumoniae-in-children-with-community-acquired-lower-respiratory-tract-infections
#9
Surinder Kumar, Indu Bala Garg, Gulshan Rai Sethi, Sanchit Kumar, Sanjeev R Saigal
Context: Mycoplasma pneumoniae (M. pneumoniae) causes up to 40% of community-acquired pneumonia in children. It is impossible to identify M. pneumoniae infection on the basis of clinical signs, symptoms, and radiological features. Therefore, correct etiological diagnosis strongly depends on laboratory diagnosis. Aims: This study aims to investigate the role of M. pneumonia e in pediatric lower respiratory tract infections (LRTIs) employing enzyme-linked immunosorbent assays (ELISA) and particle agglutination (PA) test...
April 2018: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/29675258/livedo-reticularis-a-cutaneous-clue-to-an-underlying-endocrine-crisis
#10
Natasha Shrikrishnapalasuriyar, Mirena Noyvirt, Philip Evans, Bethan Gibson, Elin Foden, Atul Kalhan
A 54-year-old woman was admitted to hospital with a presumed allergic reaction to a single dose of amoxicillin given for a suspected upper respiratory tract infection. She complained of chest tightness although there was no wheeze or stridor. On examination, she was pyrexial, tachycardic, hypertensive and had a diffuse mottled rash on her lower limbs. Her initial investigations showed raised inflammatory markers. She was treated in the intensive care for a presumed anaphylactic reaction with an underlying sepsis...
2018: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/29675019/enhanced-akt-phosphorylation-of-circulating-b-cells-in-patients-with-activated-pi3k%C3%AE-syndrome
#11
Takaki Asano, Satoshi Okada, Miyuki Tsumura, Tzu-Wen Yeh, Kanako Mitsui-Sekinaka, Yuki Tsujita, Youjiro Ichinose, Akira Shimada, Kunio Hashimoto, Taizo Wada, Kohsuke Imai, Osamu Ohara, Tomohiro Morio, Shigeaki Nonoyama, Masao Kobayashi
Activated PI3Kδ syndrome (APDS) is a primary immunodeficiency characterized by recurrent respiratory tract infections, lymphoproliferation, and defective IgG production. Heterozygous mutations in PIK3CD, PIK3R1 , or PTEN , which are related to the hyperactive phosphoinositide 3-kinase (PI3K) signaling, were recently presented to cause APDS1 or APDS2 (APDSs), or APDS-like (APDS-L) disorder. In this study, we examined the AKT phosphorylation of peripheral blood lymphocytes and monocytes in patients with APDSs and APDS-L by using flow cytometry...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29674796/prescriber-and-dispenser-perceptions-about-antibiotic-use-in-acute-uncomplicated-childhood-diarrhea-and-upper-respiratory-tract-infection-in-new-delhi-qualitative-study
#12
Anita Kotwani, P C Joshi, Urmila Jhamb, Kathleen Holloway
OBJECTIVE: The objective of the study was to explore the prescribing practices, knowledge, and attitudes of primary care doctors and community pharmacists, regarding antibiotic use in acute upper respiratory tract infections (URTI) and diarrhea in children to better understand causes of misuse and identify provider suggestions to change such behavior. MATERIALS AND METHODS: Two focus group discussions (FGDs) each were conducted with primary care government doctors (GDs), private general practitioners (GPs), pediatricians, and community pharmacists in Delhi...
November 2017: Indian Journal of Pharmacology
https://www.readbyqxmd.com/read/29674425/impact-of-gut-colonization-with-butyrate-producing-microbiota-on-respiratory-viral-infection-following-allo-hct
#13
Bastiaan W Haak, Eric R Littmann, Jean-Luc Chaubard, Amanda J Pickard, Emily Fontana, Fatima Adhi, Yangtsho Gyaltshen, Lilan Ling, Sejal M Morjaria, Jonathan U Peled, Marcel R van den Brink, Alexander I Geyer, Justin R Cross, Eric G Pamer, Ying Taur
Respiratory viral infections are frequent in patients undergoing allogeneic hematopoietic stem cell transplantation (allo-HCT), and can potentially progress to lower respiratory tract infection (LRTI). The intestinal microbiota contributes to resistance against viral and bacterial pathogens in the lung. However, whether intestinal microbiota composition and associated changes in microbe-derived metabolites contribute to the risk of LRTI following upper respiratory tract viral infection remains unexplored in the setting of allo-HCT...
April 19, 2018: Blood
https://www.readbyqxmd.com/read/29673880/french-hospital-discharge-database-pmsi-and-bacterial-resistance-is-coding-adapted-to-hospital-epidemiology
#14
L de Léotoing, F Barbier, A Dinh, D Breilh, G Chaize, A Vainchtock, L Levy-Bachelot, C Bensoussan, S Dramard, J Fernandes
OBJECTIVE: A preliminary analysis of data consistency on different types of bacterial resistance by infection site and causative agents was conducted using the French hospital discharge database (French acronym PMSI) to assess the use of the database in a national cartography tool. MATERIAL AND METHODS: Hospital stays in medical, surgical, and obstetrical units were extracted from the 2014 PMSI database using the ICD-10 diagnosis codes. Bacterial infections, causative agents, and resistance corresponding to these stays were also identified...
April 17, 2018: Médecine et Maladies Infectieuses
https://www.readbyqxmd.com/read/29673810/a-systematic-review-of-emerging-respiratory-viruses-at-the-hajj-and-possible-coinfection-with-streptococcus-pneumoniae
#15
REVIEW
Jaffar A Al-Tawfiq, Samir Benkouiten, Ziad A Memish
BACKGROUND: The annual Hajj to the Kingdom of Saudi Arabia attracts millions of pilgrims from around the world. International health community's attention goes towards this mass gathering and the possibility of the development of any respiratory tract infections due to the high risk of acquisition of respiratory viruses. METHOD: We searched MEDLINE/PubMed and Scopus databases for relevant papers describing the prevalence of respiratory viruses among Hajj pilgrims...
April 16, 2018: Travel Medicine and Infectious Disease
https://www.readbyqxmd.com/read/29673334/full-blood-count-values-as-a-predictor-of-poor-outcome-of-pneumonia-among-hiv-infected-patients
#16
S Camon, C Quiros, N Saubi, A Moreno, M A Marcos, Y Eto, S Rofael, E Monclus, J Brown, T D McHugh, J Mallolas, R Perello
BACKGROUND: To evaluate the predictive value of analytical markers of full blood count that can be assessed in the emergency department for HIV infected patients, with community-acquired pneumonia (CAP). METHODS: Prospective 3-year study including all HIV-infected patients that went to our emergency department with respiratory clinical infection, more than 24-h earlier they were diagnosed with CAP and required admission. We assessed the different values of the first blood count performed on the patient as follows; total white blood cells (WBC), neutrophils, lymphocytes (LYM), basophils, eosinophils (EOS), red blood cells (RBC), hemoglobin, hematocrit, mean corpuscular volume, mean corpuscular hemoglobin concentration, mean corpuscular hemoglobin, red blood cell distribution width (RDW), platelets (PLT), mean platelet volume, and platelet distribution width (PDW)...
April 19, 2018: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29673200/surface-and-extracellular-proteome-of-the-emerging-pathogen-corynebacterium-ulcerans
#17
Miriam Bittel, Susanne Gastiger, Bushra Amin, Jörg Hofmann, Andreas Burkovski
Corynebacterium ulcerans is an emerging pathogen, which is increasingly recognized as an etiological agent of diphtheria, but can also evoke ulcers of the skin and systemic infections in humans. Besides man, the bacteria can colonize a wide variety of different animals, including cattle and pet animals, which might serve as a reservoir for human infections. In this study, surface-located proteins and the exoproteome of two Corynebacterium ulcerans strains were analyzed, since these may have key roles in the interaction of the pathogen with host cells...
April 17, 2018: Proteomes
https://www.readbyqxmd.com/read/29673121/trends-of-neuraminidase-inhibitors-use-in-children-with-influenza-related-respiratory-infections
#18
Kazuhiro Uda, Yusuke Okubo, Kensuke Shoji, Isao Miyairi, Naho Morisaki, Nobuaki Michihata, Hiroki Matsui, Kiyohide Fushimi, Hideo Yasunaga
BACKGROUND: Neuraminidase inhibitors are recommended for children hospitalized with influenza-related respiratory infections, and oseltamivir is the first choice of treatment in most situations. However, little is known regarding the recent trend in using neuraminidase inhibitors and their difference in health economy. The aim of this study was to reveal recent trends in neuraminidase inhibitor use and compare hospitalization costs across different treatment regimens. METHODS: We retrospectively obtained the hospital discharge records of inpatients under 18 years of age with a diagnosis of influenza-related respiratory infections using a national inpatient database in Japan...
April 19, 2018: Pediatric Pulmonology
https://www.readbyqxmd.com/read/29673075/limited-pathogenicity-and-transmissibility-of-korean-highly-pathogenic-avian-influenza-h5n6-clade-2-3-4-4-in-ferrets
#19
J-Y Noh, D-H Lee, S-S Yuk, J-H Kwon, E-O Tseren-Ochir, W-T Hong, J-H Jeong, S Jeong, C-S Song
The pathogenicity and transmissibility of a reassortant clade 2.3.4.4 avian influenza A (H5N6) virus were evaluated in ferrets. Virus excretion was detected in the upper respiratory tract, but the ferrets did not show any clinical signs of infection. Transmission did not occur between cohoused or respiratory droplet-contact ferrets.
April 19, 2018: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/29672953/astragalus-polysaccharides-exerts-anti-infective-activity-by-inducing-human-cathelicidin-antimicrobial-peptide-ll-37-in-respiratory-epithelial-cells
#20
Lin Zhao, Shuai Tan, Hai Zhang, Peng Liu, Yu-Zhu Tan, Jia-Chuan Li, Da Jia, Xiao-Fei Shen
Astragalus polysaccharides (APS), one of the major active components in Astragalus membranaceus, is an effective immunomodulator used in the treatment of immunological diseases in China. However, the anti-infective action and mechanism of APS is not fully known. In the present study, we found that APS induced the expression of human cathelicidin antimicrobial peptide LL-37, a key host anti-infective molecule, in both mRNA and protein levels in respiratory epithelial cells HBE16 and A549. Furthermore, the lysate and supernatant from APS-treated HBE16 cells both exhibited an obvious antibacterial action, which was partially neutralizated by LL-37 monoclonal antibody...
April 19, 2018: Phytotherapy Research: PTR
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