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1.
International Eye Science ; (12): 1179-1182, 2021.
Article in Chinese | WPRIM | ID: wpr-877376

ABSTRACT

@#Diabetic retinopathy(DR)has always been considered as microangiopathy. However, a large number of studies have confirmed that DR can not only cause retinal angiopathy, but also cause retinal neurodegeneration. Recently, more and more evidence also shows that retinal neurodegeneration occurred before retinal angiopathy in the early stage of DR, and retinal neurodegeneration may be involved in the occurrence and development of microvascular abnormalities. At present, the mechanism of diabetic retinal neurodegeneration is not very clear. This paper reviews the research progress on the mechanism of diabetic retinal neurodegeneration in recent years.

2.
World Journal of Emergency Medicine ; (4): 304-310, 2013.
Article in English | WPRIM | ID: wpr-789640

ABSTRACT

@#BACKGROUND: Intravenous transplantation has been regarded as a most safe method in stem cell therapies. There is evidence showing the homing of bone marrow stem cells (BMSCs) into the injured sites, and thus these cells can be used in the treatment of acute myocardial infarction (MI). This study aimed to investigate the effect of intravenous and epicardial transplantion of BMSCs on myocardial infarction size in a rabbit model. METHODS: A total of 60 New Zealand rabbits were randomly divided into three groups: control group, epicardium group (group I) and ear vein group (group II). The BMSCs were collected from the tibial plateau in group I and group II, cultured and labeled. In the three groups, rabbits underwent thoracotomy and ligation of the middle left anterior descending artery. The elevation of ST segment>0.2 mV lasting for 30 minutes on the lead II and III of electrocardiogram suggested successful introduction of myocardial infarction. Two weeks after myocardial infarction, rabbits in group I were treated with autogenous BMSCs at the infarct region and those in group II received intravenous transplantation of BMSCs. In the control group, rabbits were treated with PBS following thoracotomy. Four weeks after myocardial infarction, the heart was collected from all rabbits and the infarct size was calculated. The heart was cut into sections followed by HE staining and calculation of infarct size with an image system. RESULTS: In groups I and II, the infarct size was significantly reduced after transplantation with BMSCs when compared with the control group (P<0.05). However, there was no significant difference in the infarct size between groups I and II (P>0.05). CONCLUSION: Transplantation of BMSCs has therapeutic effect on MI. Moreover, epicardial and intravenous transplantation of BMSCs has comparable therapeutic efficacy on myocardial infarction.

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