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Mesenchymal Stem Cells (MSCs) are a type of non-hematopoietic progenitor cells which have self-replication capacity and multilineage differentiation. They have widely applied in studies of various diseases due to their effects in damaged tissue repair, neuroprotection and immunoregulation. MSCs can secret exosomes through multiple ways in the physiological or pathological state. Many researches' results on MSC-Exo show that it possesses many functions similar to MSCs, such as immunoregulation and regeneration promotion of damaged tissues. Hence, MSC-Exo is believed to have considerable research potentials in regenerative medicines. This study reviewed the research progresses on biological characteristics and functions of MSC-Exo.

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Objective: This study is to observe the therapeutic effects of Shenmai injection on patients with hypertensive ICH and cerebrocardiac syndromes as well as its effects on prognosis. Methods: A total of 72 patients with severe hypertensive ICH and cerebrocardiac syndromes were selected and divided into the control group and the experimental group (Shenmai injection group) randomly, 36 patients in each group. The control group was treated by conventional therapy, while the experimental group was administrated by intravenous drip of the mixture of 50 ml Shenmai injection and 250 ml 5% glucose injection based on the treatment of the control group, once everyday, 2 weeks continuously. Results: Myocardial enzyme indexes of two groups at 3d, 7d and 14d were observed (Table 1). Myocardial enzyme index of the experimental group was improved quickly and significantly. Myocardial enzyme data of two groups at 3d, 7d and 14d were P < 0.05. According to the electrocardiographic examinations results, ECG anomalies of the experimental group at 7d and 14d were also improved quickly (P < 0.05). There are no evident anomalies in GCS scores of two groups at 7d, but GCS score of the experimental group at 14d of the medication was significantly higher than that of the control group (P < 0.05). Conclusions: Shenmai injection has some therapeutic effects on cerebral injuries and myocardial damages. It can treat brain and heart simultaneously, realize the goal of addressing both symptoms and root causes, and improve prognosis of patients with severe hypertensive ICH.