Calcium influx into neurons triggers neuronal death during cerebral ischemia/reperfusion injury.Various calcium channels are involved in cerebral ischemia/reperfusion injury.Cav3.2 channel is a main subtype of T-type ...Calcium influx into neurons triggers neuronal death during cerebral ischemia/reperfusion injury.Various calcium channels are involved in cerebral ischemia/reperfusion injury.Cav3.2 channel is a main subtype of T-type calcium channels.T-type calcium channel blockers,such as pimozide and mibefradil,have been shown to prevent cerebral ischemia/reperfusion injury-induced brain injury.However,the role of Cav3.2 channels in cerebral ischemia/reperfusion injury remains unclear.Here,in vitro and in vivo models of cerebral ischemia/reperfusion injury were established using middle cerebral artery occlusion in mice and high glucose hypoxia/reoxygenation exposure in primary hippocampal neurons.The results showed that Cav3.2 expression was significantly upregulated in injured hippocampal tissue and primary hippocampal neurons.We further established a Cav3.2 gene-knockout mouse model of cerebral ischemia/reperfusion injury.Cav3.2 knockout markedly reduced infarct volume and brain water content,and alleviated neurological dysfunction after cerebral ischemia/reperfusion injury.Additionally,Cav3.2 knockout attenuated cerebral ischemia/reperfusion injury-induced oxidative stress,inflammatory response,and neuronal apoptosis.In the hippocampus of Cav3.2-knockout mice,calcineurin overexpression offset the beneficial effect of Cav3.2 knockout after cerebral ischemia/reperfusion injury.These findings suggest that the neuroprotective function of Cav3.2 knockout is mediated by calcineurin/nuclear factor of activated T cells 3 signaling.Findings from this study suggest that Cav3.2 could be a promising target for treatment of cerebral ischemia/reperfusion injury.展开更多
Objective:Malignant tumors pose a serious threat to human life and health.Despite recent developments in modern medical techniques,the early diagnosis and treatment of tumors remain difficult due to their asymptomatic...Objective:Malignant tumors pose a serious threat to human life and health.Despite recent developments in modern medical techniques,the early diagnosis and treatment of tumors remain difficult due to their asymptomatic nature in the early stages of disease and the limitations in current clinical diagnostic methods.Advancements in nanotechnology,particularly in the area of multi-functional diagnostic nanomaterials,can help effectively resolve present inadequacies via concurrently achieving early diagnosis,image-guided intervention,and real-time monitoring and treatment of tumors.The development of nanomaterials and nanotechnology may also aid in the area of anti-cancer drug development by improving the safety and side-effect profile,as well as by enhancing the targeted specificity of the drugs,which are two of the long-standing challenges in Western medicine.The progress in the field of nanomaterials has also uncovered novel approaches for the clinical application of traditional Chinese medicine because the combination of traditional Chinese medicine components with nanoparticles overcomes various drawbacks,including poor water solubility,low bioavailability,and short half-life,of the former.Moreover,nanoparticles also enhance the biological effectiveness and targeted specificity of these medicines.In this review,we discuss the application of nanoparticles in the early diagnosis and treatment of tumors,through modern and traditional medicine.展开更多
基金supported by the Natural Science Foundation of Anhui Province of China,No.2208085Y32Scientific Research Plan Project of Anhui Province of China,No.2022AH020076the Chen Xiao-Ping Foundation for the Development of Science and Technology of Hubei Province,No.CXPJJH12000005-07-115(all to CT).
文摘Calcium influx into neurons triggers neuronal death during cerebral ischemia/reperfusion injury.Various calcium channels are involved in cerebral ischemia/reperfusion injury.Cav3.2 channel is a main subtype of T-type calcium channels.T-type calcium channel blockers,such as pimozide and mibefradil,have been shown to prevent cerebral ischemia/reperfusion injury-induced brain injury.However,the role of Cav3.2 channels in cerebral ischemia/reperfusion injury remains unclear.Here,in vitro and in vivo models of cerebral ischemia/reperfusion injury were established using middle cerebral artery occlusion in mice and high glucose hypoxia/reoxygenation exposure in primary hippocampal neurons.The results showed that Cav3.2 expression was significantly upregulated in injured hippocampal tissue and primary hippocampal neurons.We further established a Cav3.2 gene-knockout mouse model of cerebral ischemia/reperfusion injury.Cav3.2 knockout markedly reduced infarct volume and brain water content,and alleviated neurological dysfunction after cerebral ischemia/reperfusion injury.Additionally,Cav3.2 knockout attenuated cerebral ischemia/reperfusion injury-induced oxidative stress,inflammatory response,and neuronal apoptosis.In the hippocampus of Cav3.2-knockout mice,calcineurin overexpression offset the beneficial effect of Cav3.2 knockout after cerebral ischemia/reperfusion injury.These findings suggest that the neuroprotective function of Cav3.2 knockout is mediated by calcineurin/nuclear factor of activated T cells 3 signaling.Findings from this study suggest that Cav3.2 could be a promising target for treatment of cerebral ischemia/reperfusion injury.
基金This study was supported by grants from the National Natural Science Foundation of China(Grant No.81801175)the Fundamental Research Funds for the Central Universities(Grant No.WK9110000044)+1 种基金the China Postdoctoral Science Foundation(Grant No.2019M662179)the Anhui Province Postdoctoral Science Foundation(Grant No.2019B324).
文摘Objective:Malignant tumors pose a serious threat to human life and health.Despite recent developments in modern medical techniques,the early diagnosis and treatment of tumors remain difficult due to their asymptomatic nature in the early stages of disease and the limitations in current clinical diagnostic methods.Advancements in nanotechnology,particularly in the area of multi-functional diagnostic nanomaterials,can help effectively resolve present inadequacies via concurrently achieving early diagnosis,image-guided intervention,and real-time monitoring and treatment of tumors.The development of nanomaterials and nanotechnology may also aid in the area of anti-cancer drug development by improving the safety and side-effect profile,as well as by enhancing the targeted specificity of the drugs,which are two of the long-standing challenges in Western medicine.The progress in the field of nanomaterials has also uncovered novel approaches for the clinical application of traditional Chinese medicine because the combination of traditional Chinese medicine components with nanoparticles overcomes various drawbacks,including poor water solubility,low bioavailability,and short half-life,of the former.Moreover,nanoparticles also enhance the biological effectiveness and targeted specificity of these medicines.In this review,we discuss the application of nanoparticles in the early diagnosis and treatment of tumors,through modern and traditional medicine.
