单核细胞趋化蛋白1及其受体在冠心病猝死中的表达

目的：探讨单核细胞趋化蛋白1（monocyte chemotactic protein-1,MCP-1）及其受体CC类趋化蛋白受体2（CC chemokine receptor-2,CCR-2）在冠心病猝死（sudden coronary death,SCD）和非SCD冠状动脉粥样硬化斑块中的差异表达。方法应用免疫组织化学方法检测MCP-1和CCR-2在SCD组、动脉粥样硬化组（冠状动脉粥样硬化但非SCD）、对照组（冠状动脉正常）的差异表达。结果 MCP-1在三组间的阳性细胞表达率分别是78%、47%、0%,两两比较差异均有统计学意义（P＜0.05）;CCR-2在三组间的阳性细胞表达率分别是72%、47%、0%,在SCD组和动脉粥样硬化组、SCD组与对照组表达差异均有统计学意义（P〉0.05）,而在对照组和动脉粥样硬化组差异无统计学意义（P〉0.05）。结论冠状动脉粥样硬化斑块中的MCP-1及其受体CCR-2的表达增加与SCD密切相关。     

Santeria and Palo Mayombe: Skulls, Mercury, and Artifacts

Abstract:  Santeria and Palo Mayombe are syncretic religions created in the New World based upon African religious beliefs combined with Christianity. The main worship of Palo Mayombe involves religious receptacles that may contain earth, sticks, varied artifacts, and animal and human remains. Due to the use of human and nonhuman remains, discovery of these items often leads to involvement by the police due to a concern of homicide. We review in detail the medical examiner records of two of these ritualistic cases including the autopsy, anthropology, police, and investigators' reports. For the human remains, careful consideration of the context in which the remains were recovered, their state of preservation, and the associated artifacts (e.g., beads and mercury) are important in determining the appropriate level of forensic significance. Anthropological examination with particular attention to taphonomic characteristics also may help determine the origin and forensic significance.     

Subaortic Pseudoaneurysm of the Left Ventricle Complicating Staphyloccal Endocarditis*

Abstract: Subaortic pseudoaneurysms are rare but can be a cause of sudden death in young individuals. This case report involves a 20‐year‐old Vietnamese male who died suddenly from rupture of a subaortic pseudoaneurysm with resultant hemopericardium with tamponade. He had a history of bicuspid aortic valve with recent but healed Staphylococcal endocarditis. A review of the literature reveals few similar cases and enlightens the association between aortic bicuspid valve, endocarditis, and subvalvular aortic aneurysm. The pathogenesis as well as recent studies that identified aneurysm predisposing genes in patients with bicuspid aortic valve will be discussed.     

Asphyxiation by Occlusion of Nose and Mouth by Duct Tape: Two Unusual Suicides

Abstract:  The most recent U.S. statistics (2005) determined that 22.2% of suicides are by suffocation. This number likely includes suicidal hanging. Based on previous reports the majority of nonhanging suicidal asphyxiations are accomplished by securing a plastic bag over the head. We report two instances of a far less common method of suicidal asphyxiation, occlusion of the nose and mouth by duct tape. One was a 47-year-old man with a history of paranoid schizophrenia with suicidal ideation and the other was a 52-year-old man who was depressed due to gambling debts. The value of scene investigation, including review of available video surveillance to determine the manner of death is highlighted.     

医用纱布留置腹腔时间推断的初步研究

目的比较不同时间异物多核巨细胞数、细胞核数、Ⅰ/Ⅲ型胶原纤维及Ⅰ型胶原纤维/嗜银纤维比例的变化,推断异物（医用纱布）遗留腹腔时间。方法采用F344大鼠腹腔留置医用纱布的方法制作异物遗留腹腔2,8,30,120d的动物模型,肉眼观察大网膜包裹异物程度,HE染色观察异物多核巨细胞数、细胞核数变化,天狼猩红偏振光法观察Ⅰ/Ⅲ型胶原纤维比例变化、银染法观察Ⅰ型胶原纤维/嗜银纤维比例变化,并用图像分析系统对上述结果进行分析。结果随纱布留置腹腔时间延长,异物多核巨细胞数、细胞核数及Ⅰ/Ⅲ型胶原纤维比例、Ⅰ型胶原纤维/嗜银纤维比例逐渐上升,差异均具有统计学意义（P〈0.01）。Ⅰ型胶原纤维/嗜银纤维比例与纱布留置腹腔天数之间存在Power函数关系：Days=23.5[Proportion]^1.6,r=0.972。结论异物多核巨细胞数、细胞核数、Ⅰ/Ⅲ型胶原纤维及Ⅰ型胶原纤维/嗜银纤维比例变化规律有助于异物（纱布）遗留腹腔时间推断。     

姜黄素对缺氧缺血性大鼠脑组织中丙二醛和c-fos的影响

目的探讨姜黄素对大鼠缺氧缺血性脑损伤（hypoxia—ischemic brain damage．HIBD）后丙二醛（malondjaldehyde,MDA）含量和c—fos蛋白表达的影响。方法将SD雄性大鼠随机分为假手术对照纽、脑缺氧缺血组、姜黄素组和溶剂对照组。用比色法测定脑组织中MDA含量,免疫组织化学方法检测脑皮质区c—fos蛋白的表达,电镜观察脑皮质神经元的形态学变化。结果姜黄素干预组与其他组的相应时间段相比,MDA含量下降,脑皮质区c—fos蛋白表达显著增高（P〈0．05）。电镜观察脑皮质神经元损伤减轻。结论姜黄素可降低HIBD大鼠脑组织的MDA含量,上调c-fos蛋白的表达,减轻神经元的损伤。     

产后出血死亡原因分析

目的 分析产后出血死亡案例法医病理学鉴定的特点,探究产后出血致死的常见原因,为法医工     

改良硝酸破机法检验尸体组织中的硅藻

目的 探讨改良硝酸破机法与传统硅藻检验方法的差异以及优点.方法 无水乙醇充分固定尸体组织,取材80～100g,剪碎后使用硝酸破机,离心水洗去除有机成分后涂片镜检. 结果硅藻纹理清晰,容易辨识,方便记数及种类甄别.结论 改良硝酸破机法检验硅藻操作简单,检出率较高,标准化的实验过程可有效避免污染对实验结果的影响,提高实验结果的稳定性,避免实验过程中对人员和环境的危害,增加实验过程的安全性.     

心肌肌钙蛋白T在家兔缺血心肌中的表达及其死后稳定性

目的 探寻心肌肌钙蛋白T（cTnT）在家免缺血心肌中的表达规律及其死后稳定性．并对其在法医学实践中诊断早期心肌缺血的应用价值进行评价。方法用冠状动脉结扎法建立家兔急性心肌缺血模型．应用免疫组织化学法、图像分析和统计学处理系统,检测死后cTnT表达情况,并对实验组和对照组cTnT的表达进行比较。结果缺血区心肌组织可见明显不规则灶状、片状cTnT缺失区,间质呈阴性表达。在4℃放置．随放置时间延长,正常和缺血心肌组织cTnT阳性表达均有减弱趋势,至14d时均完全缺失。但仅在4℃放置1～7d内,缺血心肌和正常心肌标本之间cTnT阳性反应具有显著性差异。结论cTnT的免疫组化表达用于认定死后4℃放置的尸体是否有死前心肌缺血时．宜在7d以内进行。