Brief Research ReportPublished 11 August 2026Bone morphogenetic protein 4-associated mitochondrial dysfunction in diabetic nephropathy involves Parkin downregulationMasanori Tamaki · Tatsuya Tominaga · Kazuhiro Hasegawa · Takahiro Kida · Shinji Miyakami · Ikuko Shimizu · Sumiyo Yamaguchi · Masanori Minato · Kojiro Nagai · Shu WakinoFrontiers in Clinical Diabetes and Healthcaredoi 10.3389/fcdhc.2026.1860424