Introduction: Meningiomas are the most common type of extra-axial neoplasm. Peritumoral brain edema (PTBE) can be seen around meningiomas while it may be absent in others. Despite that Ki67 proliferative index has bee...Introduction: Meningiomas are the most common type of extra-axial neoplasm. Peritumoral brain edema (PTBE) can be seen around meningiomas while it may be absent in others. Despite that Ki67 proliferative index has been previously correlated with meningioma grades, no definite relationship has been established in relation to PTBE in meningioma patients. Objective: Correlate the peritumoral brain edema with the Ki67 proliferative index of meningiomas. Patients & Methods: Aclinical prospective study was conducted on 56 patients (47 women, 9 men;mean age 50.89 ± 12.55 years) diagnosed with meningiomas. All patients were evaluated regarding the presence of brain edema surrounding the lesion in pre-operative neuroimaging using T2W and FLAIR MR images. Immunohistochemical staining of Ki67 index (representing proliferative activity) was done. Correlation between presence of PTBE and Ki67 index values was evaluated. Results: PTBE was found in nearly half of the patients (48.2%), while the remaining (51.8%) of patients did not exhibit PTBE in their pre-operative neuroimaging. The mean value of Ki67 index in meningioma patients with PTBE was 4.83% compared to a value of 1.83% in patients without PTBE, P value = 0.014. Conclusion: High Ki67 indices are evident in meningiomas with surrounding peritumoral brain edema (PTBE).展开更多
Objective: To determine whether VEGF plays a role in the development of peritumoral brain edema. Methods 50 meningioma patients and their VEGF expression were studied. We took a monoclonal antibody from mouse to VEGF ...Objective: To determine whether VEGF plays a role in the development of peritumoral brain edema. Methods 50 meningioma patients and their VEGF expression were studied. We took a monoclonal antibody from mouse to VEGF to stain the tumor cells, the vascular endothelial cells and the interstitial cells. The severity of brain edema was evaluated according to CT or MR scans by the following equation: edema index= V tumor +edema /Vtumor. The relationship between VEGF expression and edema index was analyzed statistically. Results VEGF was expressed in meningioma tumor cells, which is usually concentrated at the peripheral sites of the tumor. There was a positive linear correlation between the expression and the brain edema index. Conclusion VEGF may play a role in the development of peritumoral brain edema in meningioma patient.展开更多
INTRODUCTION Brain edema is a serious clinical event and could cause various neurological symptoms such as dizziness and headache.Drugs frequently used to relieve brain edema include steroid,dehydrant （e.g.,mannitol...INTRODUCTION Brain edema is a serious clinical event and could cause various neurological symptoms such as dizziness and headache.Drugs frequently used to relieve brain edema include steroid,dehydrant （e.g.,mannitol）,and diuretics.But the effects of these drugs were limited in patients with severe edema.Bevacizumab has been applied in the treatment of cerebral radiation necrosis. Case studies have reported on the application of bevacizumab in the treatment of severe brain edema. In the present study,we describe significant effects of bevacizumab on severe brain edema in patients with re-irradiation.展开更多
Radiation therapy is considered the most effective non-surgical treatment for brain tumors.However,there are no available treatments for radiation-induced brain injury.Bisdemethoxycurcumin(BDMC)is a demethoxy derivati...Radiation therapy is considered the most effective non-surgical treatment for brain tumors.However,there are no available treatments for radiation-induced brain injury.Bisdemethoxycurcumin(BDMC)is a demethoxy derivative of curcumin that has anti-proliferative,anti-inflammatory,and anti-oxidant properties.To determine whether BDMC has the potential to treat radiation-induced brain injury,in this study,we established a rat model of radiation-induced brain injury by administe ring a single 30-Gy vertical dose of irradiation to the whole brain,followed by intraperitoneal injection of 500μL of a 100 mg/kg BDMC solution every day for 5 successive weeks.Our res ults showed that BDMC increased the body weight of rats with radiation-induced brain injury,improved lea rning and memory,attenuated brain edema,inhibited astrocyte activation,and reduced oxidative stress.These findings suggest that BDMC protects against radiationinduced brain injury.展开更多
目的探讨以增强T2-FLAIR序列为参照测量近瘤周水肿区的ADC值及rADC值鉴别脑内转移瘤及高级别胶质瘤的价值;方法收集行常规T1增强及T2-FLAIR增强和DWI检查的高级别胶质瘤34例与30例脑转移瘤,将瘤周10mm范围内作为感兴趣区(regions of int...目的探讨以增强T2-FLAIR序列为参照测量近瘤周水肿区的ADC值及rADC值鉴别脑内转移瘤及高级别胶质瘤的价值;方法收集行常规T1增强及T2-FLAIR增强和DWI检查的高级别胶质瘤34例与30例脑转移瘤,将瘤周10mm范围内作为感兴趣区(regions of interest,ROI)测量ADC值,并计算相应的rADC值。结果脑转移瘤的瘤周水肿带的ADC值(1.83×10^(-3)±0.13)×10^(-2)mm^(2)/s及rADC值(2.39×10^(-3)±0.21)×10^(-2)mm^(2)/s;高级别胶质瘤瘤周水肿区ADC值(1.35×10^(-3)±0.16)×10^(-2)mm^(2)/s及rADC值(1.83×10^(-3)±0.13)×10^(-2)mm^(2)/s,差异有统计学意义(P<0.05);结论以T2-FLAI R增强序列为参照测量高级别胶质瘤及脑转移瘤的瘤周水肿的ADC值及rADC值能有效鉴别两种肿瘤。展开更多
文摘Introduction: Meningiomas are the most common type of extra-axial neoplasm. Peritumoral brain edema (PTBE) can be seen around meningiomas while it may be absent in others. Despite that Ki67 proliferative index has been previously correlated with meningioma grades, no definite relationship has been established in relation to PTBE in meningioma patients. Objective: Correlate the peritumoral brain edema with the Ki67 proliferative index of meningiomas. Patients & Methods: Aclinical prospective study was conducted on 56 patients (47 women, 9 men;mean age 50.89 ± 12.55 years) diagnosed with meningiomas. All patients were evaluated regarding the presence of brain edema surrounding the lesion in pre-operative neuroimaging using T2W and FLAIR MR images. Immunohistochemical staining of Ki67 index (representing proliferative activity) was done. Correlation between presence of PTBE and Ki67 index values was evaluated. Results: PTBE was found in nearly half of the patients (48.2%), while the remaining (51.8%) of patients did not exhibit PTBE in their pre-operative neuroimaging. The mean value of Ki67 index in meningioma patients with PTBE was 4.83% compared to a value of 1.83% in patients without PTBE, P value = 0.014. Conclusion: High Ki67 indices are evident in meningiomas with surrounding peritumoral brain edema (PTBE).
文摘Objective: To determine whether VEGF plays a role in the development of peritumoral brain edema. Methods 50 meningioma patients and their VEGF expression were studied. We took a monoclonal antibody from mouse to VEGF to stain the tumor cells, the vascular endothelial cells and the interstitial cells. The severity of brain edema was evaluated according to CT or MR scans by the following equation: edema index= V tumor +edema /Vtumor. The relationship between VEGF expression and edema index was analyzed statistically. Results VEGF was expressed in meningioma tumor cells, which is usually concentrated at the peripheral sites of the tumor. There was a positive linear correlation between the expression and the brain edema index. Conclusion VEGF may play a role in the development of peritumoral brain edema in meningioma patient.
文摘INTRODUCTION Brain edema is a serious clinical event and could cause various neurological symptoms such as dizziness and headache.Drugs frequently used to relieve brain edema include steroid,dehydrant （e.g.,mannitol）,and diuretics.But the effects of these drugs were limited in patients with severe edema.Bevacizumab has been applied in the treatment of cerebral radiation necrosis. Case studies have reported on the application of bevacizumab in the treatment of severe brain edema. In the present study,we describe significant effects of bevacizumab on severe brain edema in patients with re-irradiation.
基金supported by the National Natural Science Foundation of China,No.82002400(to GJZ)Scientific Research Project of Hu nan Health Committee,No.20201911and No.20200469(both to ZJX)+2 种基金Scientific Research Project of Hunan Health Committee,No.20211411761(to HMW)the Natural Science Foundation of Hunan Province,No.2020JJ5512(to GJZ)a grant from Clinical Medical Technology Innovation Guidance Project in Hunan Province,No.2020SK51822(to ZJX)。
文摘Radiation therapy is considered the most effective non-surgical treatment for brain tumors.However,there are no available treatments for radiation-induced brain injury.Bisdemethoxycurcumin(BDMC)is a demethoxy derivative of curcumin that has anti-proliferative,anti-inflammatory,and anti-oxidant properties.To determine whether BDMC has the potential to treat radiation-induced brain injury,in this study,we established a rat model of radiation-induced brain injury by administe ring a single 30-Gy vertical dose of irradiation to the whole brain,followed by intraperitoneal injection of 500μL of a 100 mg/kg BDMC solution every day for 5 successive weeks.Our res ults showed that BDMC increased the body weight of rats with radiation-induced brain injury,improved lea rning and memory,attenuated brain edema,inhibited astrocyte activation,and reduced oxidative stress.These findings suggest that BDMC protects against radiationinduced brain injury.
文摘目的探讨以增强T2-FLAIR序列为参照测量近瘤周水肿区的ADC值及rADC值鉴别脑内转移瘤及高级别胶质瘤的价值;方法收集行常规T1增强及T2-FLAIR增强和DWI检查的高级别胶质瘤34例与30例脑转移瘤,将瘤周10mm范围内作为感兴趣区(regions of interest,ROI)测量ADC值,并计算相应的rADC值。结果脑转移瘤的瘤周水肿带的ADC值(1.83×10^(-3)±0.13)×10^(-2)mm^(2)/s及rADC值(2.39×10^(-3)±0.21)×10^(-2)mm^(2)/s;高级别胶质瘤瘤周水肿区ADC值(1.35×10^(-3)±0.16)×10^(-2)mm^(2)/s及rADC值(1.83×10^(-3)±0.13)×10^(-2)mm^(2)/s,差异有统计学意义(P<0.05);结论以T2-FLAI R增强序列为参照测量高级别胶质瘤及脑转移瘤的瘤周水肿的ADC值及rADC值能有效鉴别两种肿瘤。
