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致心律失常性右室心肌病研究进展 总被引:1,自引:0,他引:1
致心律失常性右室心肌病(ARVC)是一种新命名的原发性心肌病,其病因和发病机制至今未明。过去研究报道的病因发病机制有炎症、免疫、退行性变及个体发育不良等几种学说,但新近越来越多的研究表明其与凋亡和基因突变有关。ARVC以青壮年男性多见,多有家庭病史和遗传倾向,属常染色体显性遗传,是年轻人较常见的猝死原因之一。心脏病变的特征是右心室心肌局灶性或大片被脂肪和纤维脂肪组织所取代,正常心肌被分隔成岛状或块状,散在分布于纤维脂肪组织间,右心室壁变薄、右心室腔扩张。鉴别诊断主要是扩张型心肌病和脂肪心等。尸检时除应全面系统地解剖外,心脏需多部位,特别是右心室取材做病理切片检查。 相似文献
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右心室心肌病猝死1例陈国俊,张云涛(安徽省淮南市检察院;淮南232001)1案例金某,男性,27岁,工人,某日与邻居争吵时突感头昏,后倒地,被人立即送往就近医院救治,到医院时心跳呼吸已停止,经注射三联针及人工呼吸等抢救无效,于发病后约2小时死亡。2病... 相似文献
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1案例
1.1案情及病情经过
某女.13岁.于某年12月17日在无明显诱因下出现腹泻,日约2~3次,呈稀糊状,无黏液脓血,无腹胀、腹痛,无恶心、呕吐,无四肢抽搐,当时未就诊。 相似文献
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符晓亮龙玲玲邹鹰蔡继峰闫杰 《法医学杂志》2017,(2):199-200
1案例
1.1简要案情
孔某,男,试管婴儿,双胞胎之一,胎龄27+3周,出生后即气促、发绀,双下肢大片皮肤青紫,呼吸45次/min,律不齐,轻度三凹征,双肺呼吸音低,血氧饱和度70%-75%, 相似文献
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Takako Sato M.D. Ph.D. Hajime Nishio M.D. Ph.D. Koichi Suzuki M.D. Ph.D. 《Journal of forensic sciences》2015,60(2):457-461
Arrhythmogenic right ventricular cardiomyopathy (ARVC) results in an increased risk of sudden death. We sought mutations of desmoglein‐2 (DSG2), desmoplakin (DSP), and plakophilin‐2 (PKP2) in 15 cases of sudden death whose causes of death could not be determined at autopsy. In three victims, mutations were identified in DSP. Two of these mutations were novel; one had previously been reported in a patient with ARVC that had been diagnosed clinically. Histological findings were not typical of ARVC; however, it was notable that these mutations were present in three of 15 cases, a relatively high proportion. The causal relationship between the mutations and ARVC is unclear, but the mutations might have been associated with faulty desmosomal proteins resulting in fatal arrhythmia. Combining information gathered by the traditional means of gross and histological examination with postmortem genetic analysis of young victims would assist in identifying their cause of death. 相似文献
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病毒性心肌炎和扩张性心肌病中Dystrophin蛋白的表达 总被引:1,自引:1,他引:0
目的探讨病毒性心肌炎和扩张性心肌病的发病机制及相互关系,从而提高心性猝死法医学鉴定的可靠性和准确性。方法对17例对照(包括正常心脏、冠心病、高血压性心脏病等),25例病毒性心肌炎和28例扩张性心肌病的心肌组织进行改良的病理学dystrophin免疫组织化学研究。结果dystrophin蛋白在对照组,病毒性心肌炎组和扩张性心肌病组中阳性表达率分别为100%,88%,57%,三组表达差异有显著性(P<0.05),且在病毒性心肌炎和扩张性心肌病组间表达有显著差异(P<0.05),经Spearman等级相关分析呈显著负相关(r=-0.526)。结论病毒性心肌炎和扩张性心肌病心肌中细胞骨架蛋白均有破坏,且随着由病毒性心肌炎进展为扩张性心肌病,dystrophin蛋白表达逐渐降低,说明在病毒性心肌炎和扩张性心肌病的发病机制中可能与dystrophin的被破坏有关,病毒感染并破坏心肌细胞骨架蛋白并最终导致心肌细胞坏死,心功能受损,从而使病毒性心肌炎进展为扩张性心肌病。 相似文献
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Determining the cause for the sudden death in young adults tends to be complex and difficult. Two cases of death of young people were autoptically investigated who died suddenly while carrying out their hobbies (a 22-year-old male musician and a 20-year-old female dancer). In both cases neither the police investigation, the autopsy, nor the toxicological investigations gave any relevant results. However, when investigating the histology fatty and fibrotic tissue in the right ventricle of the myocardium were found, whereas the myocytes proved to be degenerated--typical for arrhythmogenic right ventricular cardiomyopathy (ARVC). It is important to consider the possibility of heart rhythm failure if a clear reason for sudden death in young adults cannot be detected. Heart rhythm failure often involves the genetic background of the case, which suggests that genetic analysis should be carried out as a supportive means of diagnostics. 相似文献
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急性心肌缺血猝死例左室心肌Cx43脱磷酸化的免疫组化研究 总被引:7,自引:0,他引:7
目的观察急性心肌缺血所致心性猝死,特别是冠心病猝死者与对照组,左室心肌闰盘上缝隙连接蛋白Cx43磷酸化状态的差异,探讨其在急性心肌缺血心律失常的发生,及其诊断心肌缺血早期病变中的意义。方法应用免疫组化SP技术,检测无明显心肌梗死的冠心病猝死组(组Ⅰ)、其他急性心肌缺血所致心性猝死组(组Ⅱ、Ⅲ)和两对照组(组Ⅳ、Ⅴ,严重颅脑损伤或病理性颅内出血所致急性死亡),共45名死者的左心室局部心肌组织(存档蜡块)中Cx43的磷酸化状态。另选用抗心肌闰盘上粘合连接的主要蛋白Pan-Cadherin的抗体和生物素化菜豆凝集素(PHA-E+L/Bio),分别检测心肌细胞间机械耦联与心肌细胞膜的完整性(后者采用亲和组化技术),以便在实验中与Cx43免疫组化染色结果作比较分析。结果⑴在实验组各例标本的心肌闰盘上磷酸化Cx43明显缺染,少数呈点状弥散于胞浆;但在两对照组中,可见磷酸化Cx43聚集于心肌闰盘处。⑵Pan-Cadherin在各例标本中均表现为心肌闰盘处的强阳性着色。⑶各组标本其心肌细胞膜均显示良好,细胞轮廓清晰可辨。结论急性心肌缺血所致心性猝死者,左室心肌细胞间机械耦联和心肌细胞膜的完整性与对照组相比,无明显改变,但闰盘处主司电耦联的缝隙连接蛋白Cx43却发生了明显的脱磷酸化。这提示,后者可能是急性心肌缺血所 相似文献
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柯萨奇病毒和腺病毒受体在VMC和DCM猝死者心肌组织中的表达 总被引:2,自引:0,他引:2
目的探讨病毒性心肌炎(VMC)和扩张性心肌病(DCM)的发病机制及相互关系。方法应用改良免疫组化技术检测病毒性心肌炎(28例)、扩张性心肌病(31例)和对照组19例。结果CAR阳性表达为棕色,主要表达于心肌细胞膜。在VMC心肌中均检测到较高水平的CAR表达(免疫组化面积积分为4.3975±0.0365);DCM组26例心肌组织中有较高水平的CAR表达(4.2064±0.0526),有5例几乎无表达(0.0723±0.0014),对照组心肌中几乎未检测到CAR的表达(0.0731±0.0362),VMC组及DCM组与对照组比较差异有显著性(P<0.05)。结论VMC和DCM心肌组织中CAR表达明显高于对照组,提示VMC和DCM的发病都有病毒感染的参与,两者可能来自同一个病因。 相似文献
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Plakophilin‐2 (PKP2) variants could produce a phenotype of Brugada syndrome (BrS), which seems to be most likely the same allelic disorder as some sudden unexplained nocturnal death syndrome (SUNDS). All coding regions of PKP2 gene in 119 SUNDS victims were genetically screened using PCR and direct Sanger sequencing methods. Three novel mutations (p.Ala159Thr, p.Val200Val, and p.Gly265Glu), one novel rare polymorphism (p.Thr723Thr), and eight reported polymorphisms were identified. A compound mutation (p.Ala159Thr and p.Gly265Glu) and a rare polymorphism (p.Thr723Thr) were found in one SUNDS case with absence of the cardiomyopathic features. The detected compound mutation identified in this first investigation of PKP2 genetic phenotype in SUNDS is regarded as the plausible genetic cause of this SUNDS case. The rare incidence of PKP2 mutation in SUNDS (1%) supports the previous viewpoint that SUNDS is most likely an allelic disorder as BrS. 相似文献
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Celbis O Aydin NE Mizrak B Ozdemir B 《The American journal of forensic medicine and pathology》2007,28(3):235-237
Arrhythmogenic right ventricular dysplasia or cardiomyopathy (ARVD or ARVC) is an increasingly recognized entity with clinical and forensic implications. This is the first series documenting ARVD in 5 separate cases in forensic autopsies from Turkey declared as natural sudden cardiac death following complete autopsy and toxicologic analysis. There was a male preponderance (M/F=4), with a mean age of 50. 相似文献