Renal

HIV Nephropathy

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HIV Nephropathy, AIDS associated Nephropathy, HIVAN

  • See Also
  1. Nephropathy
  2. Renal Manifestations of HIV
  3. HIV Complications
  • Epidemiology
  1. Classic HIV Nephropathy is associated with increased mortality in HIV
  • Pathophysiology
  1. Distinguish from the more common Chronic Kidney Disease in comorbid HIV
  2. Classic HIV Nephropathy (uncommon with modern Antiretroviral therapy)
    1. HIV associated glomerulopathy
    2. HIV infects renal epithelial cells
      1. Promotes HIV gene expression (esp. Nef, Vpr) within renal cells
      2. Cellular organelle dysfunction (mitochondria, endolysosomes)
      3. Stress kinase activation
  • Risk Factors
  • Classic HIV Nephropathy
  1. Black race
  2. Older age
  3. Hypertension
  4. Advanced Immunosuppression
    1. CD4 Count <200 cells/mm3
    2. HIV Viral Loads high
  5. Hepatitis C Virus coninfection
  6. Injection drug use
  7. APOL1-Mediated Kidney Disease (AMKD)
  • Findings
  1. Edema
  2. Hypertension (may be present)
  • Labs
  1. Urinalysis and Urine Protein Quantification
    1. Proteinuria (nephrotic range)
    2. Nephrotic Syndrome
    3. Hematuria (may be present)
  2. Renal Function Tests (Serum Creatinine, Blood Urea Nitrogen)
    1. Azotemia (Rapidly progressive, irreversible)
  3. Renal Biopsy
    1. Focal Segmental Glomerulosclerosis (collapsing)
  • Imaging
  1. Renal Ultrasound
    1. Increased Kidney size and echogenicity
  • Course
  1. End Stage Renal Disease develops in 4-16 weeks
  • Differential Diagnosis
  1. See Nephrotic Syndrome
  2. Heroin-associated nephropathy
    1. In contrast, HIV Nephropathy lacks Severe Hypertension, Peripheral Edema, Anasarca
  • Diagnosis
  1. Renal Ultrasound
    1. Kidneys are usually enlarged in HIV Nephropathy
  2. Renal Biopsy confirms diagnosis
  • Management
  1. See Prevention of Kidney Disease Progression
  2. No known specific treatment for classic HIV Nephropathy
    1. Contrast with the far more common Chronic Kidney Disease (CKD)
  3. Antiretroviral therapy for HIV
    1. Classic HIV Nephropathy has become uncommon in the era of modern HIV Medications
  4. ACE Inhibitor or Angiotensin Receptor Blocker
    1. See ACE Inhibitors and ARBs in Diabetic Nephropathy
    2. Indicated for persistent Proteinuria
  5. Manage comorbidities
    1. See Prevention of Kidney Disease Progression
    2. See Diabetic Nephropathy
    3. Avoid Nephrotoxic Drug
    4. Manage Renal Osteodystrophy
  6. End Stage Renal Disease
    1. Hemodialysis
    2. Renal Transplant (risk of recurrent HIVAN)
  • Prevention
  1. Screen for renal disease at time of HIV diagnosis and then every 6 months (more frequently if high risk)
  2. Avoid Nephrotoxic Drugs
    1. See Renal Manifestations of HIV
    2. See Nephrotoxic Drugs
  • References
  1. Baloor (2018) Exam Preparatory Manual for Undergraduates Medicine, Jaypee Brothers, India, p. 240
  2. Chu (2017) Am Fam Physician 96(3): 161-9 [PubMed]
  3. Jaqua (2026) Am Fam Physician 113(1): 71-9 [PubMed]