Quorum-sensing regulation of phenazine production heightens resistance to ciprofloxacin.

Quorum sensing is a type of cell-cell communication that modulates various biological activities of bacteria. Previous studies indicate that quorum sensing contributes to the evolution of bacterial resistance to antibiotics, but the underlying mechanisms are not fully understood. In this study, we grew in the presence of sub-lethal concentrations of ciprofloxacin, resulting in a large increase in ciprofloxacin minimal inhibitory concentration.

Proteome analysis develops novel plasma proteins classifier in predicting the mortality of COVID-19.

COVID-19 has been a global concern for 3 years, however, consecutive plasma protein changes in the disease course are currently unclear. Setting the mortality within 28 days of admission as the main clinical outcome, plasma samples were collected from patients in discovery and independent validation groups at different time points during the disease course. The whole patients were divided into death and survival groups according to their clinical outcomes.

N-myc and STAT interactor is a novel biomarker of severity in community-acquired pneumonia: a prospective study.

Objectives: To tested the ability of N-myc and STAT interactor (NMI) levels in patients with community-acquired pneumonia (CAP) to predict the severity of the disease.

Methods: Prospective observational analysis of patients with CAP was performed. The NMI levels in serum of 394 CAP patients on admission were measured by immunoassay.

Empyema caused by Streptococcus constellatus: a case report and literature review.

Background: Streptococcus constellatus is a member of Streptococcus anginosus group (SAG) that tends to cause pyogenic infections in various sites. However, Streptococcus constellatus is easily ignored by routine clinical laboratory tests for its prolonged anaerobic culture environment.

Case Presentation: A 71-year-old man was admitted to our hospital due to productive cough, fever, chest pain and shortness of breath for 3 weeks.

Resistance elicited by sub-lethal concentrations of ampicillin is partially mediated by quorum sensing in Pseudomonas aeruginosa.

The rapid increase of antibiotic resistance is a serious challenge around the world. Antibiotics are present in various environments at sub-lethal concentrations, but how resistance emerges under sub-lethal conditions is not fully clear. In this study, we evolved Pseudomonas aeruginosa PAO1 under sub-lethal conditions, in the presence of either 15-30 μg/mL or 150-300 μg/mL of ampicillin.

The efficacy of ado-trastuzumab emtansine in patients with ERBB2-aberrant non-small cell lung cancer: a systematic review.

Background: ERBB2 aberrations are oncogenic alterations in lung cancer. However, the reported therapeutic efficacy of ado-trastuzumab emtansine (T-DM1) varied. We therefore evaluated the efficacy and safety of T-DM1 in treating different types of ERBB2 aberrations.

Application of immune checkpoint inhibitors in EGFR-mutant non-small-cell lung cancer: from bed to bench.

Targeted therapies are efficient in the context of oncogenic driver mutations. Epidermal growth factor receptor (EGFR)-mutant lung cancers represent a distinct subset of non-small-cell lung cancer (NSCLC) with marked sensitivity to EGFR tyrosine kinase inhibitors (TKIs). Despite the high response rate to EGFR TKIs in EGFR-mutant lung cancer, resistance and tumor recurrence are unavoidable.

Cytochrome P450 Epoxygenase-Dependent Activation of TRPV4 Channel Participates in Enhanced Serotonin-Induced Pulmonary Vasoconstriction in Chronic Hypoxic Pulmonary Hypertension.

Transient receptor potential vanilloid 4 (TRPV4) is a multi-functional non-selective channel expressed in pulmonary vasculatures. TRPV4 contributes to serotonin- (5-HT-) induced pulmonary vasoconstriction and is responsible in part for the enhanced 5-HT response in pulmonary arteries (PAs) of chronic hypoxia mice. Epoxyeicosatrienoic acid (EET) is an endogenous agonist of TRPV4 and is known to regulate vasoreactivity.

Combined immune checkpoint inhibitor and chemotherapy is effective in a patient with ALK rearranged non-small cell lung cancer: a case report.

Targeted therapies are validated to be efficient in non-small cell lung cancer (NSCLC) patients with driver gene mutations, but the emergence and development of immune checkpoint inhibitors (ICIs) in the last decades offers new insight into the therapeutic decisions of patients harboring driver gene mutations. The appropriate application of ICIs-based strategies in these patients remains to be assessed. Here, we present a patient with chest tightness and nonproductive cough.

Transient Receptor Potential Channels and Chronic Airway Inflammatory Diseases: A Comprehensive Review.

Chronic airway inflammatory diseases remain a major problem worldwide, such that there is a need for additional therapeutic targets and novel drugs. Transient receptor potential (TRP) channels are a group of non-selective cation channels expressed throughout the body that are regulated by various stimuli. TRP channels have been identified in numerous cell types in the respiratory tract, including sensory neurons, airway epithelial cells, airway smooth muscle cells, and fibroblasts.