Immune-Mediated Pathogenesis in Dengue Virus Infection

Area of Science:

• * Virology and Immunology
• * Infectious Diseases
• * Public Health

Background:

• * Dengue virus (DENV) infection poses a significant global health challenge, particularly in tropical regions.
• * While most DENV infections are mild, about 5% progress to severe forms like dengue hemorrhagic fever and dengue shock syndrome.
• * Severe dengue is often associated with sequential infections by different DENV serotypes and complex immunopathogenic mechanisms.

Purpose of the Study:

• * To review the known mechanisms of DENV-mediated immunopathogenesis.
• * To explore the association between DENV infection and disease progression and severity.
• * To highlight gaps in understanding dengue pathogenesis.

Main Methods:

• * Literature review of existing studies on DENV immunopathogenesis.
• * Analysis of viral and host factors contributing to dengue severity.
• * Examination of immune cell dysregulation during DENV infection.

Main Results:

• * Impaired immune responses restrict viral clearance and promote severe inflammation, worsening dengue outcomes.
• * DENV infects various immune cells, disrupting their antiviral functions and facilitating viral spread.
• * Sequential DENV serotype infections are a key factor in severe disease development.

Conclusions:

• * DENV-induced immunopathogenesis plays a critical role in disease severity.
• * Dysregulation of immune cell functions by DENV contributes to viral dissemination and severe disease.
• * Further research is needed to fully elucidate dengue pathogenesis and identify therapeutic targets.