Irisin is a myokine that is generated by cleavage of the membrane protein fibronectin type Ⅲ domain-containing protein 5(FNDC5) in response to physical exercise. Studies reveal that irisin/FNDC5 has neuroprotective f...Irisin is a myokine that is generated by cleavage of the membrane protein fibronectin type Ⅲ domain-containing protein 5(FNDC5) in response to physical exercise. Studies reveal that irisin/FNDC5 has neuroprotective functions against Alzheimer's disease, the most common form of dementia in the elderly, by improving cognitive function and reducing amyloid-β and tau pathologies as well as neuroinflammation in cell culture or animal models of Alzheimer's disease. Although current and ongoing studies on irisin/FNDC5 show promising results, further mechanistic studies are required to clarify its potential as a meaningful therapeutic target for alleviating Alzheimer's disease. We recently found that irisin treatment reduces amyloid-β pathology by increasing the activity/levels of amyloid-β-degrading enzyme neprilysin secreted from astrocytes. Herein, we present an overview of irisin/FNDC5's protective roles and mechanisms against Alzheimer's disease.展开更多
Irisin is a chief myokine released during physical activity and has garnered attention for its potential therapeutic effects on different metabolic and cardiovascular disorders.This review explores the intricate conne...Irisin is a chief myokine released during physical activity and has garnered attention for its potential therapeutic effects on different metabolic and cardiovascular disorders.This review explores the intricate connections between irisin,physical activity,sarcopenia,type 2 diabetes mellitus(T2DM),and cardiovascular complications.Experimental data suggests that through irisin release,physical activity positively influences muscle health,metabolic regulation,and cardiovascular function.In individuals with sarcopenia,characterized by progressive muscle mass and function loss,irisin plays a pivotal role in maintaining muscle integrity and function.Additionally,irisin’s beneficial effects on insulin sensitivity and glucose metabolism suggest its involvement in the pathophysiology of T2DM.The review will examine how irisin may modulate the development of cardiovascular complications,particularly in the context of diabetes and aging.Additionally,it will explore its potential as a therapeutic target for managing sarcopenia,T2DM,and cardiovascular complications,underscoring the importance of physical activity in mitigating these interconnected health challenges.Further research is needed to elucidate the precise mechanisms by which irisin mediates these effects and assess its clinical applicability in preventing and treating metabolic and cardiovascular disorders.展开更多
A diabetic skin ulcer model was established by combining streptozotocin(STZ)administration with fullthickness skin defect surgery to evaluate the changes in irisin levels during the healing process.The experiment was ...A diabetic skin ulcer model was established by combining streptozotocin(STZ)administration with fullthickness skin defect surgery to evaluate the changes in irisin levels during the healing process.The experiment was divided into 2 groups,with 6 mice in each group:the normal control group and the diabetic skin injury group.Compared with the normal group,the model injury group showed a significant increase in blood glucose(p<0.001),a significant decrease in healing rate(p<0.001),and a significant decrease in irisin levels(p<0.001)after 14 days.Irisin levels were positively correlated with blood glucose and positively correlated with wound healing rate.In conclusion,irisin may be a potential therapeutic target for the treatment of diabetic skin injury.展开更多
基金supported by Cure Alzheimer’s Fund(to RET and SHC)JPB Foundation(to RET),and R56AG072054(to SHC)。
文摘Irisin is a myokine that is generated by cleavage of the membrane protein fibronectin type Ⅲ domain-containing protein 5(FNDC5) in response to physical exercise. Studies reveal that irisin/FNDC5 has neuroprotective functions against Alzheimer's disease, the most common form of dementia in the elderly, by improving cognitive function and reducing amyloid-β and tau pathologies as well as neuroinflammation in cell culture or animal models of Alzheimer's disease. Although current and ongoing studies on irisin/FNDC5 show promising results, further mechanistic studies are required to clarify its potential as a meaningful therapeutic target for alleviating Alzheimer's disease. We recently found that irisin treatment reduces amyloid-β pathology by increasing the activity/levels of amyloid-β-degrading enzyme neprilysin secreted from astrocytes. Herein, we present an overview of irisin/FNDC5's protective roles and mechanisms against Alzheimer's disease.
文摘Irisin is a chief myokine released during physical activity and has garnered attention for its potential therapeutic effects on different metabolic and cardiovascular disorders.This review explores the intricate connections between irisin,physical activity,sarcopenia,type 2 diabetes mellitus(T2DM),and cardiovascular complications.Experimental data suggests that through irisin release,physical activity positively influences muscle health,metabolic regulation,and cardiovascular function.In individuals with sarcopenia,characterized by progressive muscle mass and function loss,irisin plays a pivotal role in maintaining muscle integrity and function.Additionally,irisin’s beneficial effects on insulin sensitivity and glucose metabolism suggest its involvement in the pathophysiology of T2DM.The review will examine how irisin may modulate the development of cardiovascular complications,particularly in the context of diabetes and aging.Additionally,it will explore its potential as a therapeutic target for managing sarcopenia,T2DM,and cardiovascular complications,underscoring the importance of physical activity in mitigating these interconnected health challenges.Further research is needed to elucidate the precise mechanisms by which irisin mediates these effects and assess its clinical applicability in preventing and treating metabolic and cardiovascular disorders.
基金Ningbo Yinzhou District Agricultural and Social Development Technology Plan Project for Jiang Xi(Project No.:2022AS036)Zhejiang Provincial Science Foundation of China,Yu Xuefeng(Project No.:LTGY24H150003)。
文摘A diabetic skin ulcer model was established by combining streptozotocin(STZ)administration with fullthickness skin defect surgery to evaluate the changes in irisin levels during the healing process.The experiment was divided into 2 groups,with 6 mice in each group:the normal control group and the diabetic skin injury group.Compared with the normal group,the model injury group showed a significant increase in blood glucose(p<0.001),a significant decrease in healing rate(p<0.001),and a significant decrease in irisin levels(p<0.001)after 14 days.Irisin levels were positively correlated with blood glucose and positively correlated with wound healing rate.In conclusion,irisin may be a potential therapeutic target for the treatment of diabetic skin injury.
