Human immunodeficiency virus-related microvasculopathy and Kaposi's sarcoma: a case-control study

Area of Science:

• Ophthalmology
• Infectious Diseases
• Oncology

Background:

• Ocular microangiopathic syndrome, including retinal and conjunctival abnormalities, is common in patients with human immunodeficiency virus type 1 (HIV-1) disease.
• Kaposi's sarcoma (KS) is the most frequent neoplasia in HIV-1 patients.
• A prior study indicated a significant association between conjunctival microvasculopathy and KS in HIV-1 patients.

Purpose of the Study:

• To determine if the association between conjunctival microvasculopathy and KS persists when matched HIV-1 patients with and without KS are compared.
• To quantify conjunctival blood-flow sludging in HIV-1 patients with and without KS.

Main Methods:

• A total of 22 matched pairs of HIV-1 patients (with and without KS) were selected.
• Matching criteria included CD4+ lymphocyte count, Walter Reed (WR) classification, gender, and serum levels of beta-2-microglobulin and neopterin.
• Conjunctival microangiopathy was assessed using a standardized rating scale (0-5) to quantify conjunctival sludge.

Main Results:

• Patients with KS exhibited significantly higher mean conjunctival sludge values (3.2) compared to those without KS (1.8).
• The difference in conjunctival sludge was statistically significant (P = 0.003).
• The disparity was more pronounced in patients with CD4+ counts exceeding 200/microliters.

Conclusions:

• A clinically and statistically significant association exists between conjunctival microvasculopathy and Kaposi's sarcoma in HIV-1 patients.
• Shared etiological factors or mechanisms may underlie both HIV-related conjunctival microvasculopathy and KS.
• Conjunctival microvasculopathy serves as a potential indicator for KS in HIV-1 patients.