MALAT1 and hydrops fetalis: TUNEL staining and BF-188 staining showed that compared with the HF + Exos + sh-NC group, the apoptosis of hippocampal neurons in the brain of mice and the senile plaques and neurofibrillary tangles in the hippocampal area in the HF + Exos + sh-MALAT1 group were significantly increased (Fig. 8J–K).