细菌素在动物疾病防治中的作用和机理研究进展

从细菌素的性质、生产与制备、在动物疾病防治中的作用、抑(杀)菌机理及安全性评价等方面概述了此类由细菌分泌的高效抗菌蛋白类物质的研究进展。认为,细菌素不仅在体外对各种致病菌具有较强的抑杀作用,而且经口服能显著抑制动物胃肠道内的有害菌,腹腔或静脉注射后可防治动物全身性细菌感染,无任何毒害作用,是一类可用于动物疾病防治的理想的抗生素替代品。     

一种新禽病——禽卡氏杆菌病的研究进展

概述了禽卡氏杆菌的病原特征,阐述了该病原在分离培养、流行病学、诊断方法、防控措施以及流行现状等方面的研究进展,包括组织学、免疫学、分子生物学等方面所取得的进展,旨在为研究该病提供理论参考.     

Antibiotics and probiotics in chronic pouchitis:A comparative proteomic approach

AIM:To profile protein expression in mucosal biopsies from patients with chronic refractory pouchitis following antibiotic or probiotic treatment,using a comparative proteomic approach. METHODS:Two-dimensional polyacrylamide gel electrophoresis and matrix-assisted laser desorption/ ionization-time of flight mass spectrometry were used to characterize the changes related to antibiotic therapy in the protein expression profiles of biopsy samples from patients with chronic refractory pouchitis.The same proteom...     

Complex Congenital Heart Malformation Including Transposition of the Great Vessels,Presenting as Sudden Unexplained Infant Death

Transposition of the great vessels (TGV) is a common congenital heart defect that is difficult to diagnose before birth. Antenatal diagnosis is associated with increased survival. Unusual features such as anomalous pulmonary artery origin may delay cyanosis, decreasing clinical suspicion. A three‐week old female infant who had never been cyanotic presented for forensic autopsy due to onset of unresponsiveness at home. History included risk factors for TGV and signs of heart enlargement that were not recognized during life. Cardiac pathology consultation identified D‐type TGV with additional rare anomalies. TGV may present as sudden unexplained infant death (SUID) for forensic autopsy if variant features prevent development of cyanosis. Cardiac pathology consultation is helpful in clarifying these features.     

Multiple Giant Coronary Artery Aneurysms: A Rare Cause of Sudden Cardiac Death

Multiple giant aneurysms involving the coronary arteries are uncommon and rarely reported. In the presented case, a 63‐year‐old man with poorly controlled hypertension died suddenly. Gross autopsy examination showed multiple giant thrombus‐filled coronary artery aneurysms, atherosclerotic coronary artery disease, and cardiomegaly. Histological sections of the coronary aneurysms showed atherosclerotic changes with both organized and fresh thrombus. Giant coronary aneurysm is defined as a segmental enlargement of a coronary artery with a diameter exceeding 20 mm or more. The main etiology of this nebulous entity is attributed to atherosclerosis and inflammatory or inherited connective tissue disorders with the remainder being congenital, infectious, or idiopathic. Before its cataclysmic presentation, when ruptured or thrombosed, giant coronary aneurysm usually has a silent clinical course. Sudden death owing to giant multiple coronary aneurysms is rare and mandates careful classification of the aneurysms and prudent search for autoimmune‐mediated or genetically based factors for subsequent ancillary autopsy studies.     

Repeat Coronary Artery Dissection in Pregnancy: A Case Report and Review of the Literature

Non‐atherosclerotic spontaneous coronary artery dissection (NA‐SCAD) is a rare cause of morbidity and mortality with a propensity for young, healthy, and often peripartum women. NA‐SCAD etiology is poorly understood, with possible hormonal and hereditary mechanisms. Current treatment strategies range from conservative management (often showing resolution on angiographic follow‐up) to invasive angiographic procedures. Rarely, NA‐SCAD has recurred in another coronary artery, ranging hours to years later. We report NA‐SCAD of the right coronary artery (RCA) in a 30‐year old, 3‐month postpartum female with an additional autopsy finding of remote myocardial infarction (MI) in the left anterior descending (LAD) coronary artery territory. The remote MI is consistent with prior NA‐SCAD of the LAD and, given the medical history, may have occurred in the peripartum period of the decedent first pregnancy 3 years earlier. As such, to the best of our knowledge, this may represent the first reported case of NA‐SCAD recurrence in a subsequent pregnancy.     

IMA和H-FABP在心源性猝死法医学诊断中的应用

急性心肌缺血的发生是心源性猝死的最常见原因,而如何认定早期急性心肌缺血是法医学研究的热点,同时也是临床预防心肌梗死发生的重要环节。本文通过对缺血修饰白蛋白(ischemia modified albumin,IMA)和心型脂肪酸结合蛋白(heart-type fatty acid binding protein,H-FABP)的结构、功能、临床应用价值及法医学中的应用前景进行综述,旨在分析二者是否可作为早期心肌缺血的生化检测指标用于心源性猝死的诊断,并为今后选择心源性猝死的科研方向提供借鉴。     

温病湿热证湿重于热动物模型舌的病理观察

目的：观察温病湿热证湿重于热动物模型舌的病理改变。方法：复制温病湿热证湿重于热动物模型,观察大鼠舌的病理改变,并设湿热组、脾虚组、正常组进行比较。结果：湿重于热组、湿热组固有层乳头密度及核分裂相频数显著增多,与正常组及脾虚组比较差异有显著性;湿重于热组和湿热组固有层均出现炎症、充血及水肿,前者水肿更甚,后者则充血明显。结论：舌的病理改变,可能是湿热证型中舌苔变化的病理基础,并可作为判定湿热轻重的指标之一。     

口蹄疫病毒A/WH/09株结构蛋白P1基因的克隆及其B细胞抗原表位的预测

对口蹄疫病毒(FMDV)A/WH/09株P1结构蛋白基因进行了扩增、克隆及序列测定。结果显示,FMDV A/WH/09株P1基因长2 208bp,包含完整的开放阅读框,编码736个氨基酸,其中VP1长636bp,编码212个氨基酸;VP2长654bp,编码218个氨基酸;VP3长663bp,编码221个氨基酸;VP4长255bp,编码85个氨基酸。采用DNAStar Protean软件对P1蛋白的二级结构、可塑性、亲水性、表面可及性及抗原指数等参数进行了综合分析,并预测其B细胞的抗原表位分布。结果表明,VP1、VP2和VP3上均有多个区域为B细胞抗原优势表位,VP4上也有少量潜在的B细胞抗原表位。与已鉴定的B细胞抗原表位相比,本试验所用方法预测的结果有较高的准确度,是一种较为先进的表位研究方法。     

口蹄疫病毒3C基因与增强型绿色荧光蛋白基因的真核共表达

为验证siRNAs对口蹄疫病毒(FMDV)复制的抑制效果,用反转录聚合酶链反应(RT-PCR)扩增Asia 1型口蹄疫病毒Jiangsu/China/2005株的3C基因,克隆入增强型绿色荧光蛋白(EGFP)表达载体pEGFP-N1中,并进行双酶切、PCR及测序鉴定。将阳性重组质粒转染PK-15细胞,检测EGFP的表达和3C基因转录水平。结果显示,经PCR及双酶切鉴定,目的基因片段大小与预期相符,测序结果与Jiangsu/China/2005株相应序列一致。荧光显微镜和流式细胞仪均检测到细胞内有EGFP表达,实时荧光定量PCR检测到细胞内有3C基因的转录。证实,成功构建了FMDV 3C基因与EGFP共表达质粒并在PK-15细胞中获得了表达。