A previously healthy student developed the organic dust toxic syndrome after unloading a grain silo for one day. Bronchoalveolar lavage seven days later showed a total cell count six times normal with 70% lymphocytes. This suggests that the previously described acute neutrophil influx into the alveolar spaces in this syndrome is rapidly replaced by a lymphocyte dominated infiltration.
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http://dx.doi.org/10.1136/thx.45.9.713 | DOI Listing |
Int J Antimicrob Agents
January 2025
Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Capital Medical University, Beijing, China; National Center for Respiratory Medicine; State Key Laboratory of Respiratory Health and Multimorbidity; National Clinical Research Center for Respiratory Diseases; Institute of Respiratory Medicine, Chinese Academy of Medical Sciences; Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, P.R. China; Tsinghua University School of Medicine, Beijing, China. Electronic address:
Objectives: Controversy exists regarding the benefits of metagenomic next-generation sequencing (mNGS) in lower respiratory tract infections (LRTIs). We assessed the impact of mNGS on the treatment and prognosis of LRTI patients through a systematic review and meta-analysis.
Methods: A literature search was conducted in PubMed, Embase and CENTRAL databases up to February 19, 2024.
Am J Respir Cell Mol Biol
January 2025
Lady Davis Institute for Medical Research, Montreal, Quebec, Canada;
Iron regulatory protein 2 (IRP2), a post-transcriptional regulator of cellular iron metabolism has been associated with susceptibility to chronic obstructive pulmonary disease (COPD). Resistive breathing (RB) is the hallmark of the pathophysiology of obstructive airway diseases, especially during exacerbations, where increased mechanical stress is imposed on the lung. We have previously shown that RB, through tracheal banding, mimicking severe airway obstruction, induces pulmonary inflammation and injury in previously healthy mice.
View Article and Find Full Text PDFAm J Respir Cell Mol Biol
January 2025
Duke Medicine, Medicine, Durham, North Carolina, United States.
Becoming more frequent due to climate change, ozone (O) exposures can cause lung injury. Alveolar type 2 (AT2) cells and hyaluronan (HA), a matrix component, are critical to repairing lung injury and restoring homeostasis. Here, we define the impact of HA on AT2 cells following acute O exposure.
View Article and Find Full Text PDFEmerg Microbes Infect
January 2025
Genetic Diagnosis Center, The First Hospital of Jilin University, Changchun, Jilin Province 130021, China.
To unravel distinct pattern of metagenomic surveillance and respiratory microbiota between () P1-1 and P1-2 and to explore the impact of the COVID-19 pandemic on epidemiological features, we conducted a multicenter retrospective study which spanned 90,886 pneumonia patients, among which 3,164 cases were identified. Our findings revealed a concurrent outbreak of , with the positivity rate rising sharply to 9.62% from July 2023, compared to the 0.
View Article and Find Full Text PDFCureus
December 2024
Department of Respiratory Medicine, Faculty of Medicine, University of Thessaly, University General Hospital of Larissa, Larissa, GRC.
Adenovirus is a common pathogen responsible for respiratory infections, including pneumonia, predominantly in pediatric populations but also in immunocompromised adults. This case report details an 18-year-old immunocompetent male presenting with severe lobar pneumonia and pleural effusion, initially suggesting a bacterial origin. Despite antibiotic treatment, the patient's symptoms persisted, prompting further investigation.
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