Invasive meningococcal disease (IMD) is usually associated with intense inflammatory response that is correlated with severe infection. Corticosteroids may regulate this inflammatory response through an early but transient induction of IL-10 that is suggested to improve the outcome of IMD. We explored the mechanism of action of corticosteroids as an adjuvant treatment to antibiotics. Transgenic mice expressing the human transferrin were infected by a hyperinvasive meningococcal strain and transcriptomic analysis were then performed in the blood for all conditions of infection and treatment. Infected untreated mice, infected antibiotic-treated mice and infected amoxicillin and dexamethasone-treated mice were compared. Treatment using both corticosteroids and antibiotics was associated with differential gene expression in the blood especially in Monocytes-Macrophages pathways. Depletion of these cells in infected mice was associated with a more severe bacterial infection and uncontrolled production of both pro-inflammatory and anti-inflammatory cytokines. Accordingly, children suffering from severe IMD had low counts of monocytes at admission. Our data are in favor of a role of corticosteroids in enhancing a polarization from pro-inflammatory to anti-inflammatory phenotypes of Monocytes-Macrophages axis that may help controlling meningococcal invasive infections.
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http://dx.doi.org/10.1016/j.steroids.2018.05.007 | DOI Listing |
Infect Drug Resist
January 2025
Department of Clinical Medicine, School of Medicine, Qinghai University, Xining, People's Republic of China.
Pneumocystis jirovecii pneumonia (PJP) is an opportunistic fungal infection that often occurs secondary to human immunodeficiency virus (HIV) infection. However, for non-HIV immunocompromised patients, such as those undergoing novel immunosuppressive treatments to manage malignancies, organ transplants, or connective tissue diseases, PJP is emerging as an increasing threat. The clinical manifestations of PJP in HIV-infected and non-HIV-infected patients differ significantly.
View Article and Find Full Text PDFRespir Med Case Rep
December 2024
Division of Pulmonology, Dept of Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.
Introduction: Acute fibrinous and organizing pneumonia (AFOP) is a severe form of acute lung injury which can occur after lung transplantation. Treatment is empiric, based on immunosuppressive regimens and the mortality rate is very high.
Case Presentation: We report the case of a young lung transplant (LT) recipient who developed AFOP following a respiratory viral infection while on suboptimal maintenance immunosuppression due to adherence issues.
ACS Appl Mater Interfaces
January 2025
Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, China.
Alopecia areata (AA) is a prevalent autoimmune condition that causes sudden hair loss and poses significant psychological challenges to affected individuals. Current treatments, including corticosteroids and Janus kinase inhibitors, fail to provide long-term efficacy due to adverse effects and relapse after cessation. This study introduces a nanoparticle (NP) system that codeliver diphenylcyclopropenone (DPCP) and rapamycin (RAPA) prodrugs to induce immune tolerance and promote hair regeneration.
View Article and Find Full Text PDFJ Immunother Precis Oncol
February 2025
Section of Benign Hematology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
Thrombotic thrombocytopenic purpura (TTP) is characterized by thrombotic microangiopathy resulting from decreased activation of the von Willebrand factor-cleaving protease (ADAMTS13). TTP can cause organ damage and is often fatal if the appropriate treatment is not started immediately. Although primary immune TTP is the most common form of TTP, secondary immune etiologies, including complications from immune checkpoint inhibitors (ICIs), have also been reported.
View Article and Find Full Text PDFChin Clin Oncol
December 2024
Department of Radiotherapy, The 900th Hospital of the Joint Logistics Team (Dongfang Hospital), Xiamen University, Fuzhou, China.
Background: Radiotherapy plus temozolomide followed by adjuvant temozolomide was the standard treatment for high-grade gliomas. This study aimed to explore the effectiveness and safety of the addition of apatinib in patients with high-grade gliomas after surgery.
Methods: In this retrospective cohort study, patients with high-grade glioma [World Health Organization (WHO) grade III or IV] treated with apatinib and concurrent chemoradiotherapy (cCRT) after surgery from October 2017 to February 2021 were reviewed.
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