Patients with type 2 diabetes mellitus(T2 DM) often have cognitive impairment and structural brain abnormalities.The magnetic resonance imaging(MRI)-based brain atrophy and lesion index can be used to evaluate common ...Patients with type 2 diabetes mellitus(T2 DM) often have cognitive impairment and structural brain abnormalities.The magnetic resonance imaging(MRI)-based brain atrophy and lesion index can be used to evaluate common brain changes and their correlation with cognitive function,and can therefore also be used to reflect whole-brain structural changes related to T2 DM.A total of 136 participants(64 men and 72 women,aged 55–86 years) were recruited for our study between January 2014 and December 2016.All participants underwent MRI and Mini-Mental State Examination assessment(including 42 healthy control,38 T2 DM without cognitive impairment,26 with cognitive impairment but without T2 DM,and 30 T2 DM with cognitive impairment participants).The total and sub-category brain atrophy and lesion index scores in patients with T2 DM with cognitive impairment were higher than those in healthy controls.Differences in the brain atrophy and lesion index of gray matter lesions and subcortical dilated perivascular spaces were found between non-T2 DM patients with cognitive impairment and patients with T2 DM and cognitive impairment.After adjusting for age,the brain atrophy and lesion index retained its capacity to identify patients with T2 DM with cognitive impairment.These findings suggest that the brain atrophy and lesion index,based on T1-weighted and T2-weighted imaging,is of clinical value for identifying patients with T2 DM and cognitive impairment.Gray matter lesions and subcortical dilated perivascular spaces may be potential diagnostic markers of T2 DM that is complicated by cognitive impairment.This study was approved by the Medical Ethics Committee of University of South China(approval No.USC20131109003) on November 9,2013,and was retrospectively registered with the Chinese Clinical Trial Registry(registration No.Chi CTR1900024150) on June 27,2019.展开更多
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
目的探讨三酰甘油-葡萄糖指数(triglyceride-glucose index,TyG)、脑源性神经营养因子(brain-derived neurotrophic factor,BDNF)对非糖尿病维持性血液透析(maintenance hemodialysis,MHD)患者的肌肉减少症的诊断价值。方法选择2021年1...目的探讨三酰甘油-葡萄糖指数(triglyceride-glucose index,TyG)、脑源性神经营养因子(brain-derived neurotrophic factor,BDNF)对非糖尿病维持性血液透析(maintenance hemodialysis,MHD)患者的肌肉减少症的诊断价值。方法选择2021年1月—2023年1月南京中医药大学附属南京医院肾内科收治的MHD患者,根据2019年亚洲肌少症工作组(Asian Working Group for Sarcopenia,AWGS)修订的诊断标准统计肌肉减少症患病情况,检测血清三酰甘油、葡萄糖、BDNF水平,计算TyG。Pearson分析TyG、BDNF与骨骼肌质量指数(skeletal muscle mass index,SMI)、握力、步速的相关性。多因素Logistic回归分析影响MHD患者合并肌肉减少症的因素,受试者工作特征(ROC)曲线TyG、BDNF诊断MHD患者合并肌肉减少症的价值。结果126例MHD患者中39例(30.95%)患者合并肌肉减少症,与非肌肉减少症组比较,肌肉减少症组患者TyG较高、血清BDNF水平偏低(t=7.974、14.699,均P<0.001)。肌肉减少症组患者TyG与SMI、握力、步速呈负相关(r=-0.365、-0.319、-0.452,均P<0.001),BDNF与SMI、握力、步速呈正相关(r=0.326、0.275、0.395,P<0.001、0.003、P<0.001)。年龄偏大(OR=1.861,95%CI:1.040~3.330,P=0.019)、高TyG(OR=2.050,95%CI:1.049~4.008,P=0.015)是MHD患者合并肌肉减少症的危险因素,高白蛋白(OR=0.694,95%CI:0.515~0.935,P=0.008)、高BDNF(OR=0.630,95%CI:0.430~0.923,P=0.010)是MHD患者合并肌肉减少症的保护因素。TyG、BDNF诊断MHD患者合并肌肉减少症的曲线下面积为0.740(95%CI:0.654~0.814,P<0.001)、0.727(95%CI:0.641~0.803,P<0.001),联合TyG、BDNF诊断MHD患者合并肌肉减少症的曲线下面积为0.939(95%CI:0.882~0.974,P<0.001),高于单独诊断(Z=4.075、4.241,P均<0.001)。结论MHD患者TyG值增加,血清BDNF水平降低与合并肌肉减少症有关,联合TyG和BDNF可提高对MHD患者肌肉减少症风险评估价值。展开更多
基金supported by the National Natural Science Foundation of China,No.81271538 (to SNP)345 Talent Project and the Natural Science Foundation of Liaoning Province of China,No.2019-ZD-0794 (to SNP)+1 种基金the Natural Science Foundation of Hunan Province of China,Nos.2017JJ2225 (to JCL),2018JJ2357 (to GHL)Hunan Provincial Science and Technology Innovation Program of China,No.2017SK50203 (to HZ)。
文摘Patients with type 2 diabetes mellitus(T2 DM) often have cognitive impairment and structural brain abnormalities.The magnetic resonance imaging(MRI)-based brain atrophy and lesion index can be used to evaluate common brain changes and their correlation with cognitive function,and can therefore also be used to reflect whole-brain structural changes related to T2 DM.A total of 136 participants(64 men and 72 women,aged 55–86 years) were recruited for our study between January 2014 and December 2016.All participants underwent MRI and Mini-Mental State Examination assessment(including 42 healthy control,38 T2 DM without cognitive impairment,26 with cognitive impairment but without T2 DM,and 30 T2 DM with cognitive impairment participants).The total and sub-category brain atrophy and lesion index scores in patients with T2 DM with cognitive impairment were higher than those in healthy controls.Differences in the brain atrophy and lesion index of gray matter lesions and subcortical dilated perivascular spaces were found between non-T2 DM patients with cognitive impairment and patients with T2 DM and cognitive impairment.After adjusting for age,the brain atrophy and lesion index retained its capacity to identify patients with T2 DM with cognitive impairment.These findings suggest that the brain atrophy and lesion index,based on T1-weighted and T2-weighted imaging,is of clinical value for identifying patients with T2 DM and cognitive impairment.Gray matter lesions and subcortical dilated perivascular spaces may be potential diagnostic markers of T2 DM that is complicated by cognitive impairment.This study was approved by the Medical Ethics Committee of University of South China(approval No.USC20131109003) on November 9,2013,and was retrospectively registered with the Chinese Clinical Trial Registry(registration No.Chi CTR1900024150) on June 27,2019.
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).
文摘目的探讨三酰甘油-葡萄糖指数(triglyceride-glucose index,TyG)、脑源性神经营养因子(brain-derived neurotrophic factor,BDNF)对非糖尿病维持性血液透析(maintenance hemodialysis,MHD)患者的肌肉减少症的诊断价值。方法选择2021年1月—2023年1月南京中医药大学附属南京医院肾内科收治的MHD患者,根据2019年亚洲肌少症工作组(Asian Working Group for Sarcopenia,AWGS)修订的诊断标准统计肌肉减少症患病情况,检测血清三酰甘油、葡萄糖、BDNF水平,计算TyG。Pearson分析TyG、BDNF与骨骼肌质量指数(skeletal muscle mass index,SMI)、握力、步速的相关性。多因素Logistic回归分析影响MHD患者合并肌肉减少症的因素,受试者工作特征(ROC)曲线TyG、BDNF诊断MHD患者合并肌肉减少症的价值。结果126例MHD患者中39例(30.95%)患者合并肌肉减少症,与非肌肉减少症组比较,肌肉减少症组患者TyG较高、血清BDNF水平偏低(t=7.974、14.699,均P<0.001)。肌肉减少症组患者TyG与SMI、握力、步速呈负相关(r=-0.365、-0.319、-0.452,均P<0.001),BDNF与SMI、握力、步速呈正相关(r=0.326、0.275、0.395,P<0.001、0.003、P<0.001)。年龄偏大(OR=1.861,95%CI:1.040~3.330,P=0.019)、高TyG(OR=2.050,95%CI:1.049~4.008,P=0.015)是MHD患者合并肌肉减少症的危险因素,高白蛋白(OR=0.694,95%CI:0.515~0.935,P=0.008)、高BDNF(OR=0.630,95%CI:0.430~0.923,P=0.010)是MHD患者合并肌肉减少症的保护因素。TyG、BDNF诊断MHD患者合并肌肉减少症的曲线下面积为0.740(95%CI:0.654~0.814,P<0.001)、0.727(95%CI:0.641~0.803,P<0.001),联合TyG、BDNF诊断MHD患者合并肌肉减少症的曲线下面积为0.939(95%CI:0.882~0.974,P<0.001),高于单独诊断(Z=4.075、4.241,P均<0.001)。结论MHD患者TyG值增加,血清BDNF水平降低与合并肌肉减少症有关,联合TyG和BDNF可提高对MHD患者肌肉减少症风险评估价值。
文摘目的探讨表观扩散系数(apparent diffusion coefficient,ADC)鉴别诊断肺癌脑转移瘤组织学分型的价值及其与Ki-67增殖指数之间的关系。材料与方法回顾性分析经手术病理证实的20例小细胞肺癌脑转移瘤和41例非小细胞肺癌脑转移瘤患者的资料,并测定其Ki-67增殖指数。在ADC图上测量肿瘤实性部分的最小ADC值(the minimum ADC,ADCmin)、平均ADC值(the mean ADC,ADCmean)及对侧正常脑白质ADC值,并计算相对ADCmin(relative ADCmin,rADCmin)及相对ADCmean(relative ADCmean,rADCmean)。对比分析二者ADC值的差异,绘制受试者工作特征(receiver operating characteristic,ROC)曲线评价ADC值的鉴别诊断价值,并计算ADC值与Ki-67增殖指数之间的相关性。结果小细胞肺癌脑转移瘤组的ADCmin、ADCmean、rADCmin及rADCmean值均小于非小细胞肺癌脑转移瘤组,组间差异均具有统计学意义(P<0.05)。各ADC值均能对小细胞肺癌脑转移瘤及非小细胞肺癌脑转移瘤进行有效鉴别,其中rADCmean值的鉴别诊断效能最好,曲线下面积(area under the curve,AUC)为0.950[95%置信区间(confidence interval,CI):0.907~0.994],最佳截断值为0.955,相应的敏感度和特异度分别为96.23%、83.87%,准确度为91.67%。小细胞肺癌脑转移瘤组的Ki-67增殖指数大于非小细胞肺癌脑转移瘤组,组间差异具有统计学意义(P<0.05)。61例肺癌脑转移瘤患者的ADCmin、ADCmean、rADCmin及rADCmean值均与Ki-67增殖指数呈不同程度的负相关(r=-0.506、r=-0.480、r=-0.569、r=-0.541)。结论ADC值可以对肺癌脑转移瘤的组织学分型进行鉴别诊断,并可以预测Ki-67增殖指数的表达水平。
