Acute immune thrombocytopenic purpura (ITP) has been revealed as an uncommon complication of COVID-19 in children. Severe bleeding may occur but is rarely life threatening. Management is based on the severity of bleeding symptoms and the degree of thrombocytopenia. We report the case of a 7-year-old girl with severe acute ITP secondary to a COVID-19 infection -without any respiratory symptoms. The initial clinical examination showed a large bulging mediodorsal hematoma, purpuric lesions, and posterior pharyngeal hemorrhage. The patient was monitored in a pediatric intensive care unit. Initial medical management consisted of intravenous immunoglobulins and systemic steroids. Despite this treatment, bleeding and thrombocytopenia worsened, and secondary macroscopic haematuria occurred, requiring 6-hourly platelet transfusions and increased steroid doses to obtain sufficient hemostasis. This case presents a rare and severe acute pediatric ITP secondary to asymptomatic SARS-COV2 which was refractory to initial management and opens the discussion to second line therapeutic interventions.
Download full-text PDF |
Source |
---|
Development
January 2025
Institute for Regenerative Medicine, State Key Laboratory of Cardiology and Medical Innovation Center, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China.
Hematopoietic development is tightly regulated by various factors. The role of RNA m6A modification during fetal hematopoiesis, particularly in megakaryopoiesis, remains unclear. Here, we demonstrate that loss of m6A methyltransferase METTL3 induces formation of double-stranded RNAs (dsRNAs) and activates acute inflammation during fetal hematopoiesis.
View Article and Find Full Text PDFJ Virol
January 2025
Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada.
The common cold coronaviruses are a source of ongoing morbidity and mortality particularly among elderly and immunocompromised individuals. While cross-reactive immune responses against multiple coronaviruses have been described following severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and vaccination, it remains unclear if these confer any degree of cross-protection against the common cold coronaviruses. A recombinant fowl adenovirus vaccine expressing the SARS-CoV-2 spike protein (FAdV-9-S19) was generated, and protection from SARS-CoV-2 challenge was shown in K18-hACE2 mice.
View Article and Find Full Text PDFCoron Artery Dis
January 2025
Department of Cardiology, University of Health Sciences, Şişli Hamidiye Etfal Education and Research Hospital, Istanbul, Turkey.
Objectives: Contemporary studies assessing the importance of the systemic immune-inflammation index (SII) in older patients presenting with acute coronary syndrome (ACS) are scarce. This study investigated the impact and prognostic value of the SII regarding long-term mortality in older patients with ACS.
Methods: The study included 401 older patients aged 75 years and above admitted with ACS between May 2015 and December 2022.
Biomarkers
January 2025
Pediatric Intensive Care Unit, Hospital Sant Joan de Déu-University of Barcelona, Barcelona, Spain.
PurposeChimeric antigen receptor (CAR) T-cell CD19 therapy has changed the treatment paradigm for patients with relapsed/refractory B-cell acute lymphoblastic leukemia. It is frequently associated with potentially severe toxicities: cytokine release syndrome (CRS) and immune effector cell-associated neurotoxicity syndrome (ICANS), and admission to PICU is often required. Some biomarkers seem to correlate with CRS severity.
View Article and Find Full Text PDFJ Med Virol
January 2025
Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore.
Mathematical models of viral dynamics are crucial in understanding infection trajectories. However, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) viral load data often includes limited sparse observations with significant heterogeneity. This study aims to: (1) understand the impact of patient characteristics in shaping the temporal viral load trajectory and (2) establish a data collection protocol (DCP) to reliably reconstruct individual viral load trajectories.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!