Decreased Expression of Megalin and Cubilin and Altered Mitochondrial Activity in Tenofovir Nephrotoxicity

Tenofovir disoproxil fumarate (TDF) is a commonly used antiretroviral drug for HIV, rarely causing Fanconi syndrome and acute kidney injury. We retrospectively analyzed the clinico-pathological presentation of 20 cases of tenofovir-induced tubulopathy, and investigated the renal expression of the megalin and cubilin proteins, as well as the mitochondrial respiratory chain activity. Estimated glomerular filtration rate (eGFR) before TDF exposure was 92 ml/min/1,73m2, decreasing to 27.5 ml/min/1,73m2 at the time of biopsy, with 30% of patients requiring renal replacement therapy.

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