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Tubular Secretory Solute Clearance and HIV Infection.

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This summary is machine-generated.

People living with HIV (PLWH) show reduced kidney tubular secretion, impacting drug clearance and potentially increasing kidney disease risk. This study found lower secretion of key solutes in women with HIV, even with normal kidney function.

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Area of Science:

  • Nephrology
  • Infectious Diseases
  • Pharmacology

Background:

  • Tubular secretion is crucial for medication clearance by the kidneys.
  • The impact of HIV on tubular secretion and kidney disease risk is not well understood.
  • Reduced secretion may increase the risk of adverse drug events and kidney disease progression in people living with HIV.

Purpose of the Study:

  • To investigate differences in kidney tubular secretion between women living with HIV (WLWH) and HIV-uninfected women.
  • To identify factors associated with altered secretory function in WLWH.

Main Methods:

  • Evaluated 6 endogenous secretory solutes in 199 WLWH and 100 HIV-uninfected women.
  • Estimated secretory clearance using urine-to-plasma ratios, adjusted for urine tonicity.
  • Utilized multivariable linear regression to compare clearance levels and associated characteristics.

Main Results:

  • Women living with HIV had significantly lower secretory clearance (10%-15%) for 3 solutes (cinnamoylglycine, kynurenic acid, pyridoxic acid).
  • These differences persisted independently of estimated glomerular filtration rate (eGFR), albuminuria, and other chronic kidney disease risk factors.
  • Factors like race, diabetes, hypertension, smoking, hepatitis C, and HIV-specific parameters (viral load, CD4 count) were associated with secretion variations.

Conclusions:

  • HIV infection is associated with reduced kidney tubular secretion in women, even with preserved eGFR.
  • The clinical implications for drug dosing and adverse events in WLWH require further investigation.