By inhibiting cellular activation, corticosteroids such as prednisone may inhibit HIV expression and reduce the population of potentially infectable cells. Furthermore, no studies have been performed to systematically evaluate immune function in prednisone-treated, HIV-infected patients or the immune mechanisms that may facilitate increases in CD4+ cell number. This study explores this issue.

Patients are separated into 2 arms according to whether or not they are currently receiving a protease inhibitor (PI) as part of their antiretroviral (ARV) therapy regimen (PI vs no PI therapy). Arm I: Current stable ARV therapy plus prednisone for 8 weeks, followed by 4 weeks at half the prior dose, then a 2-week taper. Arm II: Current stable ARV therapy plus prednisone placebo for 12 weeks.

Inclusion Criteria

You may be eligible for this study if you:

• Are HIV-positive.
• Have a CD4 cell count of 200-600 cells/mm3 within 30 days of study entry. (This study has been changed. You now must have a CD4 cell count of 200-700 cells/mm3 within 45 days of study entry.)
• Have had your viral load measured within 30 days of study entry.
• Have been on stable anti-HIV therapy with at least two anti-HIV agents for at least 12 weeks, and you intend to remain on this therapy during the study.
• Are at least 18 years of age.
• Agree to abstain from sex or use effective methods of birth control during the study and for 30 days after.

Exclusion Criteria

You will not be eligible for this study if you:

• Abuse alcohol or drugs or have a serious psychological condition.
• Are allergic to prednisone or other corticosteroids.
• Have a history of opportunistic (AIDS-related) infections, including cytomegalovirus (CMV), Mycobacterium avium complex (MAC), or Kaposi's sarcoma (KS).
• Have a history of a serious medical condition, including heart problems, tuberculosis (TB), cancer, diabetes, or osteoporosis.
• Are being treated for herpes at study entry.
• Have received certain medications, including blood pressure medication.
• Are pregnant or breast-feeding.