艾滋病合并隐球菌感染17例尸检材料的临床病理学研究

在１５１例艾滋病尸检材料中发现１７例合并隐球菌感染,均经病理学确诊,患者男１５名,女２名,平均４３．６岁。１２例发生脑膜炎、肺炎和淋巴结炎各７例,尚见脾（６例）、肾（５例）等器官受累。９例为播散性感染。病变为慢性肉牙肿性,其中见有隐球菌。本文描述隐球菌性脑膜炎、肺炎等临床病理学表现,并讨论其病变特征与病理诊断问题。     

人工饲养条件下死亡恒河猴肺脏病理改变分析

目的观察人工饲养条件下实验恒河猴肺脏病理改变,探讨实验猴呼吸系统疾病分布规律和病理改变特点,丰富实验猴自发病变基本研究资料。方法对1998～2008年云南地区饲养的自然死亡的155只恒河猴（年龄2～20岁）的肺脏进行病理检查,按年龄分为幼年组、成年组、老年组,并对观察结果进行统计学分析。结果实验猴肺脏主要病变有大叶性肺炎、支气管肺炎、间质性肺炎、肺气肿、支气管扩张症、胸膜炎、肺肉芽肿性炎等12种,出现率最高的为支气管肺炎（18.71%）和大叶性肺炎（16.74%）。恒河猴肺脏病变在不同年龄阶段均有发生,老年猴组肺脏病变发生率最高,疾病类型和发生率在不同年组中分布不相同,统计学分析显示：支气管炎病变成年组发病率明显高于幼年组;肺气肿病变老年组明显高于成年组和幼年组,（P〈0.05）。结论人工饲养条件下死亡实验猴肺脏病变检出率较高,实验猴肺脏病变在不同年龄阶段存在差异,实验猴肺脏病理改变结果丰富了实验猴的基本研究资料,对实验猴的质量控制和相关动物实验有重要价值。     

Quantitative assessment of IgG antibodies to Helicobacter pylori and outcome of ischaemic heart disease

Criticisms of serological studies on Helicobacter pylori and ischaemic heart disease (IHD) include: undiagnosed heart disease in live controls; no assessment of severity or outcome of IHD; and qualitative not quantitative measurements of IgG to the bacteria. The aim was to assess quantitatively IgG levels specific for H. pylori (ng ml(-1)) among patients who survived a myocardial infarction (MI) with those who died of IHD. Sera were from four groups: (1) men who survived one MI; (2) men matched for age and socioeconomic background to group 1; (3) individuals who died suddenly of IHD; (4) accidental deaths matched for age and sex to group 3. Levels of IgG to H. pylori increased with age (P<0.005) but were not associated with smoking or socioeconomic groups. There was a correlation between IgG to the bacteria and decreasing socioeconomic levels only among group 1 (P<0.01). IgG levels were higher for subjects who died of heart disease (median=151 ng ml(-1)) compared with survivors (median=88 ng ml(-1)) (P=0.034) and higher for survivors compared with their controls (median=58 ng ml(-1)) (P=0.039). Future serological studies of H. pylori in relation to IHD should be quantitative and severity of disease considered in analyses.     

Copper Concentration in Body Tissues and Fluids in Normal Subjects of Southern Poland

Data on the concentration of the elements in the human body are important, for example, to estimate the amounts required to maintain a good healthy state or find their connections with morbidity and mortality. In this paper, the concentration of copper (by flame atomic absorption spectrometry) in material obtained from autopsy cases of nonpoisoned people (n = 130), aged from 14 to 80 years, between 1990–2006, is presented. The following values were found (mean ± SD in micrograms of copper per gram or per milliliter): brain 3.32 ± 1.50 (n = 43), liver 3.47 ± 1.51 (n = 79), kidney 2.15 ± 0.90 (n = 76), stomach 1.10 ± 0.76 (n = 65), intestines 1.54 ± 1.19 (n = 25), lung 1.91 ± 1.30 (n = 27), spleen 1.23 ± 0.28 (n = 3), heart 3.26 ± 0.59 (n = 5), bile 3.60 ± 1.67 (n = 13), and blood 0.85 ± 0.19 (n = 73).     

The Sun Health Research Institute Brain Donation Program: Description and Eexperience, 1987–2007

The Brain Donation Program at Sun Health Research Institute has been in continual operation since 1987, with over 1000 brains banked. The population studied primarily resides in the retirement communities of northwest metropolitan Phoenix, Arizona. The Institute is affiliated with Sun Health, a nonprofit community-owned and operated health care provider. Subjects are enrolled prospectively to allow standardized clinical assessments during life. Funding comes primarily from competitive grants. The Program has made short postmortem brain retrieval a priority, with a 2.75-h median postmortem interval for the entire collection. This maximizes the utility of the resource for molecular studies; frozen tissue from approximately 82% of all cases is suitable for RNA studies. Studies performed in-house have shown that, even with very short postmortem intervals, increasing delays in brain retrieval adversely affect RNA integrity and that cerebrospinal fluid pH increases with postmortem interval but does not predict tissue viability.     

36 例心源性猝死尸检的临床病理学研究*

目的:分析心源性猝死的临床病理学特征,为心源性猝死的诊断和预防提供理论依据。方法:收集36例心源性猝死病例的尸检解剖资料,进行病理组织学检查。结果:36例心源性猝死者中,冠心病21例,占心源性猝死者总数的58.33%;心律失常性右心室心肌病猝死者3例,占心源性猝死者总数的8.33%。结论:科学系统的尸检可以明确猝死原因,为医疗纠纷鉴定提供可靠依据,同时,对提高医疗质量,早期诊断、治疗心血管系统疾病和减少猝死发生起有重要作用。     

American Association of Physical Anthropologists. Abstracts of papers to be presented at the Forty-Ninth Annual Meeting,April 17–19, 1980, Niagara Falls,New York

An interdisciplinary team performed autopsies on an adult male and an infant male mummy from the American Southwest. Cause of death has not been determined for the infant. The presence of an unhealed skull fracture associated with an apparent hematoma in the adult male is suggestive of trauma as the cause of death in the adult. Evidence of disease is minimal. Analysis of powder thought to be dried blood from the thoracic cavity of the adult suggests the presence of human IgG. The instability of this protein may indicate the presence of proteolytic activity by enzymes that degrade immunoglobulins upon rehydration. The possibility of enzymatic degradation of proteins will be an important factor in future studies of such immunoglobulins in mummy remains and also indicates the importance of maintaining the desiccated condition of mummy tissues.     

Effects of Postmortem Delay and Temperature on Neurotransmitter Receptor Binding in a Rat Model of the Human Autopsy Process

Abstract: Studies of neurotransmitter and drug receptor alterations in neurodegenerative disorders have contributed to our understanding of the pathophysiology of these conditions. The effect of postmortem delay in freezing tissue after death and prolonged storage of tissue prior to analysis on receptor binding assays are potential artifacts that may limit interpretation of the effects of disease on receptor populations. We used a rat model of the human autopsy process to study the effects of increasing postmortem delay and storage time on N -methylscopolamine (NMS), p -aminoclonidine (PAC), flunitrazepam (FLU), and spiperone binding in a variety of rat brain regions. The rat brains were cooled using a temperature-controlled environment and thermistor probe to follow cooling curves obtained in human brain. Brains were cooled to either room temperature (22°C) or refrigerator temperature (4°C). For three of the four receptors, receptor binding decreased as postmortem delay before freezing increased, particularly in tissue cooled to room temperature. Unlike binding at other receptor sites, FLU binding increased with increasing postmortem delay to freezing. Different effects on K _D and B _max were noted for each ligand studied. No effects of the freezing process itself or storage at -80°C were detectable.     

Pneumocytes are distinguished by highly elevated expression of the ER stress biomarker GRP78, a co-receptor for SARS-CoV-2, in COVID-19 autopsies

Vaccinations are widely credited with reducing death rates from COVID-19, but the underlying host-viral mechanisms/interactions for morbidity and mortality of SARS-CoV-2 infection remain poorly understood. Acute respiratory distress syndrome (ARDS) describes the severe lung injury, which is pathologically associated with alveolar damage, inflammation, non-cardiogenic edema, and hyaline membrane formation. Because proteostatic pathways play central roles in cellular protection, immune modulation, protein degradation, and tissue repair, we examined the pathological features for the unfolded protein response (UPR) using the surrogate biomarker glucose-regulated protein 78 (GRP78) and co-receptor for SARS-CoV-2. At autopsy, immunostaining of COVID-19 lungs showed highly elevated expression of GRP78 in both pneumocytes and macrophages compared with that of non-COVID control lungs. GRP78 expression was detected in both SARS-CoV-2-infected and un-infected pneumocytes as determined by multiplexed immunostaining for nucleocapsid protein. In macrophages, immunohistochemical staining for GRP78 from deceased COVID-19 patients was increased but overlapped with GRP78 expression taken from surgical resections of non-COVID-19 controls. In contrast, the robust in situ GRP78 immunostaining of pneumocytes from COVID-19 autopsies exhibited no overlap and was independent of age, race/ethnicity, and gender compared with that from non-COVID-19 controls. Our findings bring new insights for stress-response pathways involving the proteostatic network implicated for host resilience and suggest that targeting of GRP78 expression with existing therapeutics might afford an alternative therapeutic strategy to modulate host-viral interactions during SARS-CoV-2 infections.     

不同年龄实验恒河猴自然死亡的肝脏病变谱分析

目的观察人工饲养条件下实验恒河猴肝脏病理改变,探讨肝脏疾病分布规律和病理改变特点,丰富实验猴自发病变基本研究资料。方法对1998～2008年云南地区饲养的自然死亡的155只恒河猴(年龄2～20岁)的肝脏进行病理检查,按年龄分为幼年组、成年组、老年组,并对观察结果进行统计学分析。结果 155例恒河猴中88例检出肝脏病变,有肝细胞变性、肝细胞坏死、炎细胞浸润、吞噬细胞增生、肝淤血、纤维组织增生、肝脓肿、寄生虫共八种主要病变,出现率最高的为肝细胞水样变性(34.19%)。除肝脓肿外,幼年组、成年组、老年组八种病变均有检出。卡方检验显示:肝细胞水样变性成年组病变率明显高于幼年组;肝细胞脂肪变性老年组明显高于成年组和幼年组;轻度炎细胞浸润病变老年组明显高于成年组;纤维组织增生老年组明显高于幼年组(P<0.05)。结论人工饲养条件下死亡实验猴肝脏病变检出率较高,实验猴肝脏病理改变随年龄增长而病变加重,提示在进行实验猴肝脏研究时,应注意对自发性病变的判别,药物安全性评价实验应避免选择老年猴做为研究对象。死亡实验猴肝脏病变谱研究,对实验猴的质量控制和相关动物实验有重要指导价值。