This commentary highlights the research entitled: Transplantation of platelet-derived mitochondria alleviates cognitive impairment and mitochondrial dysfunction in db/db mice, presented by Ma et al. appearing in Clinical Science (2020) 134(16), The authors evaluated the effect of xenograft transplantation of mitochondria isolated from peripheral blood platelets in an animal model of type II diabetes and evaluated the effects of transplantation on diabetes-associated cognitive impairment (DACI). They showed cognitive and molecular improvement in response to mitochondrial transplantation to db/db mice brains. Besides, they showed better internalization of the transplanted mitochondria into the diseased animals’ hippocampal cells compared with the healthy normal control.

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