Association Between Syphilitic Posterior Uveitis, VDRL Titer and HIV Co-Infection

Area of Science:

• Ophthalmology
• Infectious Diseases
• Immunology

Background:

• Syphilis can affect the posterior segment of the eye, leading to syphilitic posterior uveitis.
• Understanding the relationship between diagnostic markers and clinical presentation is crucial for patient management.

Purpose of the Study:

• To investigate the association between Venereal Disease Research Laboratory (VDRL) testing and posterior segment syphilis.
• To characterize the epidemiology and clinical features of syphilitic posterior uveitis.
• To assess the impact of HIV co-infection on disease presentation.

Main Methods:

• Retrospective, observational, multicenter study.
• Inclusion of 83 patients with serologically confirmed syphilitic posterior uveitis.
• Analysis of medical records for epidemiologic, clinical, and laboratorial data.

Main Results:

• A borderline significant association was found between higher VDRL titers and retinitis/choroiditis (p=0.055).
• In HIV-infected patients, papillitis was associated with higher CD4+ lymphocyte counts (p=0.069).
• Common phenotypes included acute syphilitic posterior placoid chorioretinitis (57.9%) and papillitis (49.4%).

Conclusions:

• Elevated VDRL titers may indicate a higher risk of severe posterior uveitis phenotypes like retinitis/choroiditis.
• In HIV-positive individuals, higher CD4+ counts might be associated with papillitis, suggesting a potential link to disease severity.
• These findings highlight the importance of VDRL titers and CD4+ counts in predicting uveitis severity in syphilis patients.