Previous studies have shown that models of depression exhibit structural and functional changes to the neurovascular unit. Thus, we hypothesized that diabetes-related depression might be associated with damage to the ...Previous studies have shown that models of depression exhibit structural and functional changes to the neurovascular unit. Thus, we hypothesized that diabetes-related depression might be associated with damage to the hippocampal neurovascular unit. To test this hypothesis, neurons, astrocytes and endothelial cells were isolated from the brain tissues of rat embryos and newborn rats. Hippocampal neurovascular unit co-cultures were produced using the Transwell chamber co-culture system. A model of diabetes-related depression was generated by adding 150 mM glucose and 200 μM corticosterone to the culture system and compared with the neuron + astrocyte and astrocyte + endothelial cell co-culture systems. Western blot assay was used to measure levels of structural proteins in the hippocampal neurovascular unit co-culture system. Levels of basic fibroblast growth factor, angiogenic factor 1, glial cell line–derived neurotrophic factor, transforming growth factor β1, leukemia inhibitory factor and 5-hydroxytryptamine in the hippocampal neurovascular unit co-culture system were measured by enzyme-linked immunosorbent assay. Flow cytometry and terminal deoxynucleotidyl transferase(TdT)-mediated dUTP nick end labeling staining was used to assess neuronal apoptosis in the hippocampal neurovascular unit. The neurovascular unit triple cell co-culture system had better barrier function and higher levels of structural and secretory proteins than the double cell co-culture systems. In comparison, in the model of diabetes-related depression, the neurovascular unit was damaged with decreased barrier function, poor structural integrity and impaired secretory function. Moreover, neuronal apoptosis was markedly increased, and 5-hydroxytryptamine levels were reduced. These results suggest that diabetes-related depression is associated with structural and functional damage to the neurovascular unit. Our findings provide a foundation for further studies on the pathogenesis of diabetes-related depression.展开更多
We sought to assess the psychological status and diabetes-related distress of Chinese type 1 diabetes patients in Jiangsu province, China. According to the World Health Organization criteria, 42 patients with type 1 d...We sought to assess the psychological status and diabetes-related distress of Chinese type 1 diabetes patients in Jiangsu province, China. According to the World Health Organization criteria, 42 patients with type 1 diabetes were enrolled in the study and assessed with the Self-Rating Anxiety Scale （SAS）, Self-Rating Depression Scale （SDS） and Diabetes Distress Scale （DDS）. All data were tabulated and statistical analyses were performed. The study summarized cases of 42 patients with type 1 diabetes, including 17 males and 25 females with a mean age of 23- 12 years and a mean duration of diabetes of 7_ 6 years. Compared to the Chinese normative data, the SAS standard score was significantly higher, whereas SDS standard score had no statistical significance. The SAS standard score was most highly correlated with diabetes duration （y = 0.547, P = 0.011）. Additionally, 19.5% of the patients had moderate or even severe diabetes-related distress and 21.4% had moderate or even severe emo- tional burden while 26.2% had regimen-related distress. Multiple stepwise regression analysis showed that the mean correlation between DDS and the four domains was high, particularly the emotional burden domain （esti- mated D = 0.363, P 〈 0.001） and regimen-related distress domain （estimated 13 = 0.356, P 〈 0.001）. The correlation between SAS and DDS was positive （estimated 13 = 0.039, P = 0.027）. In conclusion, the results showed the im- portance of psychological aspects in Chinese individuals with type 1 diabetes. Screening and treatment of psycho- logical aspects may result in better adherence and increased quality of life for patients with diabetes.展开更多
目的探讨左归降糖解郁方调控小胶质细胞免疫受体分子样家族成员f(immune receptor molecule-like family member f,CD300f)改善糖尿病并发抑郁症(diabetes-related depression,DD)海马突触微环境损伤的保护作用及机制。方法原代分离、...目的探讨左归降糖解郁方调控小胶质细胞免疫受体分子样家族成员f(immune receptor molecule-like family member f,CD300f)改善糖尿病并发抑郁症(diabetes-related depression,DD)海马突触微环境损伤的保护作用及机制。方法原代分离、培养、纯化和鉴定小胶质细胞和海马神经元,复制模拟DD环境下的海马突触微环境损伤体外细胞模型,设置正常组、模型组、CD300f阻断剂CLM-1组、左归降糖解郁方含药血清组和左归降糖解郁方含药血清+CLM-1组。采用细胞成像分析观察小胶质细胞和海马神经元形态结构;采用ELISA法检测细胞上清液中肿瘤坏死因子-α(tumor necrosis factor-α,TNF-α)、白细胞介素-1β(interleukin-1β,IL-1β)、吲哚胺2,3-双加氧酶(indoleamine 2,3-dioxygenase,IDO)、5-羟色胺(5-hydroxyteyptamine,5-HT)、多巴胺(dopamine,DA)含量;采用CCK-8实验及活死细胞染色评估海马神经元活性;采用尼氏染色观察海马神经元突触损伤;采用免疫荧光检测小胶质细胞中CD300f、Toll样受体4(Toll-like receptor 4,TLR4)和海马神经元中突触素(synaptophysin,SYN)、突触后密度蛋白95(postsynaptic density protein 95,PSD-95)蛋白表达;采用Western blotting检测SYN、PSD-95蛋白表达。结果左归降糖解郁方能有效改善小胶质细胞和海马神经元形态结构损伤,抑制细胞上清中神经炎症因子TNF-α、IL-1β和IDO水平(P<0.05、0.01),促进神经递质5-HT、DA水平(P<0.01),进而缓解海马神经元细胞活性及突触损伤。进一步的机制研究发现,左归降糖解郁方能显著增加海马小胶质细胞中CD300f表达(P<0.01),降低TLR4表达(P<0.05),并上调海马神经元中突触前膜SYN和突触后膜PSD-95表达(P<0.01),最终抑制海马突触微环境损伤。结论左归降糖解郁方能有效改善体外DD状态下的海马突触微环境损伤,其机制可能与上调小胶质细胞CD300f有关。展开更多
基金supported by the National Natural Science Foundation of China,No.81373578(to YHW),81573965(to YHW)the Natural Science Foundation of Hunan Province of China,No.2017JJ3241(to JL)the Education Department Scientific Research Foundation of Hunan Province of China,No.17C1229(to JL)
文摘Previous studies have shown that models of depression exhibit structural and functional changes to the neurovascular unit. Thus, we hypothesized that diabetes-related depression might be associated with damage to the hippocampal neurovascular unit. To test this hypothesis, neurons, astrocytes and endothelial cells were isolated from the brain tissues of rat embryos and newborn rats. Hippocampal neurovascular unit co-cultures were produced using the Transwell chamber co-culture system. A model of diabetes-related depression was generated by adding 150 mM glucose and 200 μM corticosterone to the culture system and compared with the neuron + astrocyte and astrocyte + endothelial cell co-culture systems. Western blot assay was used to measure levels of structural proteins in the hippocampal neurovascular unit co-culture system. Levels of basic fibroblast growth factor, angiogenic factor 1, glial cell line–derived neurotrophic factor, transforming growth factor β1, leukemia inhibitory factor and 5-hydroxytryptamine in the hippocampal neurovascular unit co-culture system were measured by enzyme-linked immunosorbent assay. Flow cytometry and terminal deoxynucleotidyl transferase(TdT)-mediated dUTP nick end labeling staining was used to assess neuronal apoptosis in the hippocampal neurovascular unit. The neurovascular unit triple cell co-culture system had better barrier function and higher levels of structural and secretory proteins than the double cell co-culture systems. In comparison, in the model of diabetes-related depression, the neurovascular unit was damaged with decreased barrier function, poor structural integrity and impaired secretory function. Moreover, neuronal apoptosis was markedly increased, and 5-hydroxytryptamine levels were reduced. These results suggest that diabetes-related depression is associated with structural and functional damage to the neurovascular unit. Our findings provide a foundation for further studies on the pathogenesis of diabetes-related depression.
基金supported by Natural Science Foundation of China(No.81070622)
文摘We sought to assess the psychological status and diabetes-related distress of Chinese type 1 diabetes patients in Jiangsu province, China. According to the World Health Organization criteria, 42 patients with type 1 diabetes were enrolled in the study and assessed with the Self-Rating Anxiety Scale （SAS）, Self-Rating Depression Scale （SDS） and Diabetes Distress Scale （DDS）. All data were tabulated and statistical analyses were performed. The study summarized cases of 42 patients with type 1 diabetes, including 17 males and 25 females with a mean age of 23- 12 years and a mean duration of diabetes of 7_ 6 years. Compared to the Chinese normative data, the SAS standard score was significantly higher, whereas SDS standard score had no statistical significance. The SAS standard score was most highly correlated with diabetes duration （y = 0.547, P = 0.011）. Additionally, 19.5% of the patients had moderate or even severe diabetes-related distress and 21.4% had moderate or even severe emo- tional burden while 26.2% had regimen-related distress. Multiple stepwise regression analysis showed that the mean correlation between DDS and the four domains was high, particularly the emotional burden domain （esti- mated D = 0.363, P 〈 0.001） and regimen-related distress domain （estimated 13 = 0.356, P 〈 0.001）. The correlation between SAS and DDS was positive （estimated 13 = 0.039, P = 0.027）. In conclusion, the results showed the im- portance of psychological aspects in Chinese individuals with type 1 diabetes. Screening and treatment of psycho- logical aspects may result in better adherence and increased quality of life for patients with diabetes.
文摘目的探讨左归降糖解郁方调控小胶质细胞免疫受体分子样家族成员f(immune receptor molecule-like family member f,CD300f)改善糖尿病并发抑郁症(diabetes-related depression,DD)海马突触微环境损伤的保护作用及机制。方法原代分离、培养、纯化和鉴定小胶质细胞和海马神经元,复制模拟DD环境下的海马突触微环境损伤体外细胞模型,设置正常组、模型组、CD300f阻断剂CLM-1组、左归降糖解郁方含药血清组和左归降糖解郁方含药血清+CLM-1组。采用细胞成像分析观察小胶质细胞和海马神经元形态结构;采用ELISA法检测细胞上清液中肿瘤坏死因子-α(tumor necrosis factor-α,TNF-α)、白细胞介素-1β(interleukin-1β,IL-1β)、吲哚胺2,3-双加氧酶(indoleamine 2,3-dioxygenase,IDO)、5-羟色胺(5-hydroxyteyptamine,5-HT)、多巴胺(dopamine,DA)含量;采用CCK-8实验及活死细胞染色评估海马神经元活性;采用尼氏染色观察海马神经元突触损伤;采用免疫荧光检测小胶质细胞中CD300f、Toll样受体4(Toll-like receptor 4,TLR4)和海马神经元中突触素(synaptophysin,SYN)、突触后密度蛋白95(postsynaptic density protein 95,PSD-95)蛋白表达;采用Western blotting检测SYN、PSD-95蛋白表达。结果左归降糖解郁方能有效改善小胶质细胞和海马神经元形态结构损伤,抑制细胞上清中神经炎症因子TNF-α、IL-1β和IDO水平(P<0.05、0.01),促进神经递质5-HT、DA水平(P<0.01),进而缓解海马神经元细胞活性及突触损伤。进一步的机制研究发现,左归降糖解郁方能显著增加海马小胶质细胞中CD300f表达(P<0.01),降低TLR4表达(P<0.05),并上调海马神经元中突触前膜SYN和突触后膜PSD-95表达(P<0.01),最终抑制海马突触微环境损伤。结论左归降糖解郁方能有效改善体外DD状态下的海马突触微环境损伤,其机制可能与上调小胶质细胞CD300f有关。
