Background： Clinically, it is difficult to differentiate multiple acyl-CoA dehydrogenase deficiency （MADD） from immune-mediated necrotizing myopathy （IMNM） because they display similar symptoms. This study aimed ...Background： Clinically, it is difficult to differentiate multiple acyl-CoA dehydrogenase deficiency （MADD） from immune-mediated necrotizing myopathy （IMNM） because they display similar symptoms. This study aimed to determine whether muscle magnetic resonance imaging （MRI） could be used for differential diagnosis between MADD and IMNM. Methods： The study evaluated 25 MADD patients, confirmed by muscle biopsy and ETFDH gene testing, and 30 IMNM patients, confirmed by muscle biopsy. Muscles were assessed for edema and fatty replacement using thigh MRI （tMRI）. Degrees and distribution patterns of fatty infiltration and edema in gluteus maximus and thigh muscles were compared. Results： Total fatty infiltration and edema scores （median, [Q 1, Q3]） were 4.00 （1.00, 15.00） and 0 （0, 4.00） in MADD and 14.50 （8.00, 20.75） and 22.00 （16.75, 32.00） in IMNM, respectively, which were significantly more severe in IMNM than that in MADD （P = 0.000 and P = 0.004~ respectively）. Edema scores tbr gluteus maximus, long head of biceps femoris, and semimembranosus were significantly higher in IMNM than in MADD （all P = 0.000）. Fatty infiltration scores for anterior and medial compartments were significantly more severe in IMNM than that in MADD （all P = 0.000）. Conclusion： Different patterns of muscle involvement on tMRI can contribute to differential diagnosis between MADD and IMNM when clinical suspicions alone are insufficient, thereby reducing the need for muscle biopsy.展开更多
Allogeneic hematopoietic stem cell transplantation （Allo-HSCT） is associated with neuromuscluar complications in fewer than 5% of patients.1 The most common causes are associated with the toxicity of the conditionin...Allogeneic hematopoietic stem cell transplantation （Allo-HSCT） is associated with neuromuscluar complications in fewer than 5% of patients.1 The most common causes are associated with the toxicity of the conditioning regimen,infections,bleeding,and malignant disease relapse.Allo-HSCT related neuromuscular complications can also be caused by immune-mediated mechanisms,which are usually present in the form of myositis/polymyositis or demyelinating polyneuropathy.Keywords：allogeneic hematopoietic stem cell transplantation; immune mediated; chronic demyelinating polyneuropathy;steroid myopathy展开更多
他汀类药物是预防心脑血管事件最常用的药物之一,具有降脂、抗炎、稳定动脉粥样硬化斑块等作用,其药理学作用靶点为3-羟基-3-甲基戊二酰辅酶A还原酶(3-hydroxy-3-methylglutaryl-coenzyme A reductase,HMGCR)。通常情况下他汀类药物具...他汀类药物是预防心脑血管事件最常用的药物之一,具有降脂、抗炎、稳定动脉粥样硬化斑块等作用,其药理学作用靶点为3-羟基-3-甲基戊二酰辅酶A还原酶(3-hydroxy-3-methylglutaryl-coenzyme A reductase,HMGCR)。通常情况下他汀类药物具有良好的安全性和耐受性,但部分患者在使用后可能出现横纹肌溶解、免疫介导的坏死性肌病(immunemediated necrotizing myopathy,IMNM)和其他肌肉相关的不良反应,除IMNM患者即使停用他汀类药物后病情仍继续进展外,其他大多数不良反应具有自限性。展开更多
文摘Background： Clinically, it is difficult to differentiate multiple acyl-CoA dehydrogenase deficiency （MADD） from immune-mediated necrotizing myopathy （IMNM） because they display similar symptoms. This study aimed to determine whether muscle magnetic resonance imaging （MRI） could be used for differential diagnosis between MADD and IMNM. Methods： The study evaluated 25 MADD patients, confirmed by muscle biopsy and ETFDH gene testing, and 30 IMNM patients, confirmed by muscle biopsy. Muscles were assessed for edema and fatty replacement using thigh MRI （tMRI）. Degrees and distribution patterns of fatty infiltration and edema in gluteus maximus and thigh muscles were compared. Results： Total fatty infiltration and edema scores （median, [Q 1, Q3]） were 4.00 （1.00, 15.00） and 0 （0, 4.00） in MADD and 14.50 （8.00, 20.75） and 22.00 （16.75, 32.00） in IMNM, respectively, which were significantly more severe in IMNM than that in MADD （P = 0.000 and P = 0.004~ respectively）. Edema scores tbr gluteus maximus, long head of biceps femoris, and semimembranosus were significantly higher in IMNM than in MADD （all P = 0.000）. Fatty infiltration scores for anterior and medial compartments were significantly more severe in IMNM than that in MADD （all P = 0.000）. Conclusion： Different patterns of muscle involvement on tMRI can contribute to differential diagnosis between MADD and IMNM when clinical suspicions alone are insufficient, thereby reducing the need for muscle biopsy.
文摘Allogeneic hematopoietic stem cell transplantation （Allo-HSCT） is associated with neuromuscluar complications in fewer than 5% of patients.1 The most common causes are associated with the toxicity of the conditioning regimen,infections,bleeding,and malignant disease relapse.Allo-HSCT related neuromuscular complications can also be caused by immune-mediated mechanisms,which are usually present in the form of myositis/polymyositis or demyelinating polyneuropathy.Keywords：allogeneic hematopoietic stem cell transplantation; immune mediated; chronic demyelinating polyneuropathy;steroid myopathy
文摘他汀类药物是预防心脑血管事件最常用的药物之一,具有降脂、抗炎、稳定动脉粥样硬化斑块等作用,其药理学作用靶点为3-羟基-3-甲基戊二酰辅酶A还原酶(3-hydroxy-3-methylglutaryl-coenzyme A reductase,HMGCR)。通常情况下他汀类药物具有良好的安全性和耐受性,但部分患者在使用后可能出现横纹肌溶解、免疫介导的坏死性肌病(immunemediated necrotizing myopathy,IMNM)和其他肌肉相关的不良反应,除IMNM患者即使停用他汀类药物后病情仍继续进展外,其他大多数不良反应具有自限性。
