[Objectives] This study aimed to study the effects of Sanguis Draconis flavones( SDF) on the immune regulation of mouse spleen lymphocytes. [Methods]A total of 60 BALB/c male mice were evenly and randomly divided into...[Objectives] This study aimed to study the effects of Sanguis Draconis flavones( SDF) on the immune regulation of mouse spleen lymphocytes. [Methods]A total of 60 BALB/c male mice were evenly and randomly divided into normal control group,model group,positive group,and high,middle and low-dose SDF groups. The mice in the model group were injected intraperitoneally with cyclophosphamide to establish mouse immunosuppressive model. The mice in the other groups were intragastrically administered at the respective doses,and the body weight was weighed once a week during the administration period. After 30 d of administration,the thymus and spleen indexes,the spleen lymphocyte proliferation ability,the NK cell activity,and the IL-2,IL-4 and INF-γ contents in the culture supernatant were measured. [Results]SDF could significantly increase the thymus and spleen indexes and improve the spleen lymphocyte proliferation ability and NK cell activity of the mice,as well as increasing the IL-2 and INF-γ contents and reducing the IL-4 content in spleen lymphocyte suspension culture. [Conclusions] SDF have good immunoregulatory effect.展开更多
[Objectives] To explore the protective effect of Sanguis Draconis flavones (SDF) on rat focal cerebral ischemia-reperfusion injury (CIRI) models established by middle cerebral artery occlusion (MCAO).[Methods] A total...[Objectives] To explore the protective effect of Sanguis Draconis flavones (SDF) on rat focal cerebral ischemia-reperfusion injury (CIRI) models established by middle cerebral artery occlusion (MCAO).[Methods] A total of 60 healthy adult male Sprague-Dawley rats were selected. They were evenly and randomly divided into sham group, model group, edaravone group (12 mg/kg) and SDF group (360 mg/kg), and administered intragastrically and intraperitoneally. The middle cerebral artery of each rat was blocked by suture-occluded method to establish a CIRI model. After ischemia for 2 h and reperfusion for 48 h, the pathological injury on the ischemic side was observed by HE staining;the neuron and myelin sheath structure was observed by transmission electron microscopy;the expression of G protein-coupled receptor kinase 2 (GRK2) was preserved by immunohistochemistry;and the transfer of GRK2 was detected by western-blot.[Results] After 48 h of CIRI, the nuclei of the penumbral cortical neurons shrank, the chromatin was unevenly distributed, the nuclear membrane was dissolved and the mitochondria in the cytoplasm were swollen and vacuolated. The myelin layer was disordered. With this change, the distribution of GRK2 subcellular cells in the penumbra of the injured lateral cortex transferred from the cytoplasm to the membrane. SDF can effectively restore neuronal and myelin sheath structural damage and reduce the functional (membrane coupling) expression of GRK2.[Conclusions] GRK2 may be an effective target for SDF to protect the impaired blood-brain barrier (BBB) in CIRI.展开更多
基金Supported by Foundation of Anhui Academy of Medical Sciences(YKY2018006)
文摘[Objectives] This study aimed to study the effects of Sanguis Draconis flavones( SDF) on the immune regulation of mouse spleen lymphocytes. [Methods]A total of 60 BALB/c male mice were evenly and randomly divided into normal control group,model group,positive group,and high,middle and low-dose SDF groups. The mice in the model group were injected intraperitoneally with cyclophosphamide to establish mouse immunosuppressive model. The mice in the other groups were intragastrically administered at the respective doses,and the body weight was weighed once a week during the administration period. After 30 d of administration,the thymus and spleen indexes,the spleen lymphocyte proliferation ability,the NK cell activity,and the IL-2,IL-4 and INF-γ contents in the culture supernatant were measured. [Results]SDF could significantly increase the thymus and spleen indexes and improve the spleen lymphocyte proliferation ability and NK cell activity of the mice,as well as increasing the IL-2 and INF-γ contents and reducing the IL-4 content in spleen lymphocyte suspension culture. [Conclusions] SDF have good immunoregulatory effect.
基金Supported by Foundation of Anhui Academy of Medical Sciences(YKY2018006)
文摘[Objectives] To explore the protective effect of Sanguis Draconis flavones (SDF) on rat focal cerebral ischemia-reperfusion injury (CIRI) models established by middle cerebral artery occlusion (MCAO).[Methods] A total of 60 healthy adult male Sprague-Dawley rats were selected. They were evenly and randomly divided into sham group, model group, edaravone group (12 mg/kg) and SDF group (360 mg/kg), and administered intragastrically and intraperitoneally. The middle cerebral artery of each rat was blocked by suture-occluded method to establish a CIRI model. After ischemia for 2 h and reperfusion for 48 h, the pathological injury on the ischemic side was observed by HE staining;the neuron and myelin sheath structure was observed by transmission electron microscopy;the expression of G protein-coupled receptor kinase 2 (GRK2) was preserved by immunohistochemistry;and the transfer of GRK2 was detected by western-blot.[Results] After 48 h of CIRI, the nuclei of the penumbral cortical neurons shrank, the chromatin was unevenly distributed, the nuclear membrane was dissolved and the mitochondria in the cytoplasm were swollen and vacuolated. The myelin layer was disordered. With this change, the distribution of GRK2 subcellular cells in the penumbra of the injured lateral cortex transferred from the cytoplasm to the membrane. SDF can effectively restore neuronal and myelin sheath structural damage and reduce the functional (membrane coupling) expression of GRK2.[Conclusions] GRK2 may be an effective target for SDF to protect the impaired blood-brain barrier (BBB) in CIRI.
