目的探讨抗黑色素瘤分化相关蛋白-5(melanoma differentiation associated protein-5,MDA5)抗体、抗Ro-52抗体双阳性皮肌炎的临床特征及预后情况。方法收集2018年8月~2022年7月空军军医大学第二附属医院唐都医院收治的抗MDA5抗体阳性的4...目的探讨抗黑色素瘤分化相关蛋白-5(melanoma differentiation associated protein-5,MDA5)抗体、抗Ro-52抗体双阳性皮肌炎的临床特征及预后情况。方法收集2018年8月~2022年7月空军军医大学第二附属医院唐都医院收治的抗MDA5抗体阳性的47例皮肌炎患者,根据抗Ro-52抗体是否阳性,分为MDA5+Ro-52阳性组(n=23),MDA5+Ro-52阴性组(n=24),回顾性分析其临床资料,比较两组患者的临床特征、实验室指标、快速进展性肺间质病变发生率及病死率的差异。结果两组比较,MDA5+Ro-52阳性组Gotton疹、声音嘶哑发生率高于MDA5+Ro-52阴性组,差异均有统计学意义(P均<0.05);皮肤破溃、甲周红斑、向阳疹、披肩征、发热、关节疼痛、咽痛等发生率比较,差异均无统计学意义(P均>0.05);MDA5+Ro-52阳性组淋巴细胞计数[0.65(0.50,0.81)×10^(9)/L vs 1.18(0.91,1.63)×10^(9)/L,z=-3.821,P=0.001]、血清白蛋白[33.40(29.40,35.67)g/L vs 37.25(32.65,40.27)g/L,z=-3.325,P=0.001]、动脉氧分压[66.60(58.60,86.80)mmHg vs 88.60(75.67,95.72)mmHg,z=-2.373,P=0.018]、血氧饱和度[90.40%(89.00%,95.00%)vs 94.90%(90.50%,97.73%),z=-2.353,P=0.019]低于MDA5+Ro-52阴性组,差异有统计学意义(P<0.05),红细胞沉降率[41.00(30.00,62.50)mm/h vs 28.50(21.50,48.75)mm/h,z=2.161,P=0.031]、血清乳酸脱氢酶水平[426.00(335.50,605.50)U/L vs 260.00(217.50,373.25)U/L,z=3.313,P=0.011]、血清铁蛋白水平[1210.00(465.50,2749.00)μg/L vs 366.00(150.25,629.25)μg/L,z=2.856,P=0.004]、快速进展性肺间质病变发生率(73.91%vs 25.00%,χ^(2)=11.245,P=0.001)及病死率(43.47%vs 8.33%,χ^(2)=7.63,P=0.006)均高于抗MDA5+Ro-52阴性组,差异有统计学意义(P<0.05)。结论抗MDA5抗体、抗Ro-52抗体双阳性的皮肌炎患者易出现血清乳酸脱氢酶、铁蛋白水平增高,血清白蛋白、外周血淋巴细胞计数减低,且更易合并快速进展性肺间质病变、出现低氧血症,预后差,病死率高,需引起临床医师的重视。展开更多
Peripheral neuropathy constitutes a highly incidental condition and a major public health concern worldwide(Hanewinckel et al.,2016).This pathology is triggered by peripheral nervous system damage as a consequence of ...Peripheral neuropathy constitutes a highly incidental condition and a major public health concern worldwide(Hanewinckel et al.,2016).This pathology is triggered by peripheral nervous system damage as a consequence of systemic disease or ischemic-traumatic lesion.In the latter case,nerve crush,partial or total transection and stretch injury interrupt nerve conduction and impair sensitivity and motility of the innervated area,which brings about partial or total functional loss in the affected limb and disabling neuropathic pain.For these reasons,digging into the molecular mechanisms underlying peripheral neuropathy becomes essential for the development of successful therapeutic strategies.展开更多
Let Hn be an orientable handlebody of genus n. It has been proved that for n not less than 2, there exists an annulus-busting curve in δHm. In the present paper, we prove that for n not less than 2, there exists an e...Let Hn be an orientable handlebody of genus n. It has been proved that for n not less than 2, there exists an annulus-busting curve in δHm. In the present paper, we prove that for n not less than 2, there exists an essential simple closed curve C in OHm which intersects each essential planar surface in Hn non-emptily. Furthermore, we show that for n not less than 3, a pants-busting curve must also be an annulus-busting curve.展开更多
文摘目的探讨抗黑色素瘤分化相关蛋白-5(melanoma differentiation associated protein-5,MDA5)抗体、抗Ro-52抗体双阳性皮肌炎的临床特征及预后情况。方法收集2018年8月~2022年7月空军军医大学第二附属医院唐都医院收治的抗MDA5抗体阳性的47例皮肌炎患者,根据抗Ro-52抗体是否阳性,分为MDA5+Ro-52阳性组(n=23),MDA5+Ro-52阴性组(n=24),回顾性分析其临床资料,比较两组患者的临床特征、实验室指标、快速进展性肺间质病变发生率及病死率的差异。结果两组比较,MDA5+Ro-52阳性组Gotton疹、声音嘶哑发生率高于MDA5+Ro-52阴性组,差异均有统计学意义(P均<0.05);皮肤破溃、甲周红斑、向阳疹、披肩征、发热、关节疼痛、咽痛等发生率比较,差异均无统计学意义(P均>0.05);MDA5+Ro-52阳性组淋巴细胞计数[0.65(0.50,0.81)×10^(9)/L vs 1.18(0.91,1.63)×10^(9)/L,z=-3.821,P=0.001]、血清白蛋白[33.40(29.40,35.67)g/L vs 37.25(32.65,40.27)g/L,z=-3.325,P=0.001]、动脉氧分压[66.60(58.60,86.80)mmHg vs 88.60(75.67,95.72)mmHg,z=-2.373,P=0.018]、血氧饱和度[90.40%(89.00%,95.00%)vs 94.90%(90.50%,97.73%),z=-2.353,P=0.019]低于MDA5+Ro-52阴性组,差异有统计学意义(P<0.05),红细胞沉降率[41.00(30.00,62.50)mm/h vs 28.50(21.50,48.75)mm/h,z=2.161,P=0.031]、血清乳酸脱氢酶水平[426.00(335.50,605.50)U/L vs 260.00(217.50,373.25)U/L,z=3.313,P=0.011]、血清铁蛋白水平[1210.00(465.50,2749.00)μg/L vs 366.00(150.25,629.25)μg/L,z=2.856,P=0.004]、快速进展性肺间质病变发生率(73.91%vs 25.00%,χ^(2)=11.245,P=0.001)及病死率(43.47%vs 8.33%,χ^(2)=7.63,P=0.006)均高于抗MDA5+Ro-52阴性组,差异有统计学意义(P<0.05)。结论抗MDA5抗体、抗Ro-52抗体双阳性的皮肌炎患者易出现血清乳酸脱氢酶、铁蛋白水平增高,血清白蛋白、外周血淋巴细胞计数减低,且更易合并快速进展性肺间质病变、出现低氧血症,预后差,病死率高,需引起临床医师的重视。
基金supported by Universidad de Buenos Aires(UBACYT 20020100101017)CONICET,Ministerio de Ciencia,Tecnología e Innovación Productiva de la República Argentina(PIP 830 and PIP 567)
文摘Peripheral neuropathy constitutes a highly incidental condition and a major public health concern worldwide(Hanewinckel et al.,2016).This pathology is triggered by peripheral nervous system damage as a consequence of systemic disease or ischemic-traumatic lesion.In the latter case,nerve crush,partial or total transection and stretch injury interrupt nerve conduction and impair sensitivity and motility of the innervated area,which brings about partial or total functional loss in the affected limb and disabling neuropathic pain.For these reasons,digging into the molecular mechanisms underlying peripheral neuropathy becomes essential for the development of successful therapeutic strategies.
基金The grant (09XBKQ09) of Harbin Normal Universitythe NSF (11101058) of ChinaChina Postdoctoral Science Foundation (2011M500049)
文摘Let Hn be an orientable handlebody of genus n. It has been proved that for n not less than 2, there exists an annulus-busting curve in δHm. In the present paper, we prove that for n not less than 2, there exists an essential simple closed curve C in OHm which intersects each essential planar surface in Hn non-emptily. Furthermore, we show that for n not less than 3, a pants-busting curve must also be an annulus-busting curve.
