Nephroprotective Activity Evaluation

Nephroprotective evaluation follows an analogous logic to hepatoprotective evaluation, assessing a candidate extract's ability to prevent or ameliorate chemically induced kidney injury, most commonly using cisplatin- or gentamicin-induced nephrotoxicity models in rats. Renal function is assessed through serum creatinine and blood urea nitrogen, both of which rise as glomerular filtration rate declines; through urinary biomarkers of tubular injury, including urinary protein excretion and, increasingly, sensitive tubular injury markers such as kidney injury molecule-1 (KIM-1); and through renal tissue oxidative stress markers (malondialdehyde and antioxidant enzyme activity) analogous to those used in hepatoprotective assessment. Histopathological grading of renal tubular necrosis, cast formation, and interstitial inflammation provides the definitive morphological endpoint, and the overall study design — biochemical, oxidative-stress, and histopathological endpoints evaluated in parallel — mirrors the multi-parameter approach used throughout organ-protective herbal pharmacology.