Cor triatriatum associated with partial anomalous pulmonary venous connection to the coronary sinus: Echocardiographic and angiocardiographic features

Summary An infant girl is described who had cor triatriatum and partial anomalous pulmonary venous connection of the left pulmonary veins to the coronary sinus, the first report of this combination of lesions. The infant also had a Dandy-Walker malformation and multiple facial and intrathoracic hemangiomas. The cardiac diagnosis was made by two-dimensional echocardiography. Cardiac catheterization and angiography confirmed the findings and also demonstrated a persistent left superior vena cava draining to the coronary sinus. The infant underwent successful surgical repair. Partial anomalous pulmonary venous connection and left superior vena cava not infrequently are associated with cor triatriatum. Although two-dimensional echocardiography is sensitive for the detection of cor triatriatum, preoperative cardiac catheterization is necessary to identify unequivocally systemic and pulmonary venous connections.     

抗性家蝇蛹期多肽的双向电泳分析

分析抗性家蝇蛹期多肽，以了解蛋白质变化情况。方法：对家蝇的抗性株、对照株和敏感株蛹体内的多肽进行了聚丙烯酸胺凝胶电泳分析。结果：抗性株具有一特异的多肽点，且有3个多肽点在量上明显多于对照株。结论：杀虫剂的作用可使抗性家蝇体内的蛋白在质和量上发生改变。     

二维超声心动图对高原婴幼儿右室射血分数的估测

目的：将二维超声测量右室射血分数（RVEF）的方法应用于临床。方法：用心尖四腔观单平面面积－长度法测量43例高原正常婴幼儿RVEF，并与40例患右室扩张肥厚型心肌病（RVDCHM）婴幼儿进行了比较。结果：健康组RVEF均值为58．20％，标准差为7．24％；患儿组均值为36．10％，标准差为7．01％，两组测量的RVEF有非常显著差异（P＜0．001）。结论：心尖四腔观单平面面积－长度法测量RVEF可作为估测右室收缩功能的简单可靠的方法。     

A two-dimensional electrophoresis reference map of human ovary

The ovary plays a central role in oogenesis and gonadal hormone secretion. Proteomic analysis is a valuable approach for gaining an increased understanding of the molecular nature of the ovary. In this work, two-dimensional electrophoresis for protein separation followed by matrix-assisted laser desorption/ionization mass spectrometry and database searches, identified 231 protein spots corresponding to 138 individual proteins that were found in gels representing both the follicular and luteal phases. The data were used to construct a database online (). The identified proteins were functionally classified into seven groups: (1) cell signaling/communication, (2) cell division, (3) gene/protein expression, (4) metabolism, (5) cell structure and motility, (6) cell/organism defense, and (7) unclassified. Among the proteins identified, 47% had not been previously reported in the human ovary. In addition, a number of disease-related proteins were identified in this protein map, including some cancer- and polycystic ovarian syndrome-related proteins. Two proteins with phosphorylation were verified by Western blot analysis. Comparison of protein abundance between follicular and luteal stages produced seven protein spots that had been identified in our database. This study provides a preliminary reference map of normal human ovary that will form a basis for comparative studies on normal and pathological conditions of the human ovary and may serve as a potential tool for clinical diagnosis, therapeutics, and prognosis.Electronic Supplementary Material Supplementary material is available in the online version of this article at L. Wang and Y.-F. Zhu contributed equally to this work     

Barium blocks cell membrane and tight junction conductances inNecturus gallbladder epithelium

The site and concentration dependence of the blocking effect of Ba²⁺ onNecturus gallbladder epithelium has been investigated. A new approach was used which combines time-dependent electrical cell coupling analysis with intermittently performed measurements of transepithelial and apparent intracellular impedance. From the coupling pulse data the sum of apical and basolateral membrane conductances is obtained, which is then held constant during fitting of the impedance data. This combination technique yields more reliable estimates of apical and basolateral membranes resistances (R _a,R _bl) and of tight junction resistance (R _j) than our previous impedance analysis technique. Using the new approach we have found that luminal Ba²⁺ concentrations between 0.5 and 1.0 mmol/l increaseR _a with saturation-type kinetics without affectingR _bl andR _j, while higher luminal Ba²⁺ concentrations progressively increaseR _j. Corresponding effects were observed under serosal Ba²⁺. The results validate the new impedance analysis approach and demonstrate that millimolar concentrations of Ba²⁺ block tight junction conductances. Accordingly, Ba²⁺ can no longer be considered a tool to exclusively alter cell membrane resistances in epithelia.     

胞必佳注射液抑制膀胱癌细胞BIU-87生长的蛋白质组学分析

目的探讨胞必佳对膀胱癌细胞杀伤作用的分子机制。方法胞必佳注射液作用膀胱癌细胞BIU-8796h,用固相pH梯度双向凝胶电泳分离胞必佳注射液处理和未处理的膀胱癌细胞BIU-87的总蛋白质,银染显色,PDQuest2-de软件分析差异蛋白质点。结果双向电泳图像分析胞必佳注射液药物处理组图像的平均蛋白质数为1021±88,未处理组的平均蛋白质数为1171±99;差异蛋白质有661个,其中有216个表达增强,有451蛋白质表达下降。结论胞必佳注射液对膀胱癌细胞的杀伤作用这些差异表达蛋白质有关,这些差异蛋白质有待质谱分析鉴定,为其作用的分子机理研究提供了新的思路。     

超声引导心包穿刺置管引流治疗心包积液的研究

目的探讨一种安全、简便、可靠的心包穿刺并有效治疗心包积液的方法。方法对27例心包积液患者术前经二维超声心动图定位、定向并测定进针深度后,以Seldinger法进行心包穿刺置入中心静脉导管,连接无菌引流袋持续引流,必要时进行冲洗并注入相应药物,观察疗效、安全性及不良反应。结果27例病例均一次穿刺置管成功,导管留置时间2～31d,引流液量300～7600ml,心包积液引流彻底,心包压塞症状消失,心功改善,疗效显著,未出现严重并发症。结论术前经二维超声心动图定位、定向并测定进针深度后,以Seldinger法进行心包穿刺置入中心静脉导管对心包积液进行治疗安全、简便、可靠,疗效显著且无严重并发症,完全能替代以往的常规心包穿刺术。     

苍耳子对小鼠脾淋巴细胞蛋白质组影响的双向电泳分析

目的观察苍耳子对致敏小鼠脾淋巴细胞蛋白质表达的影响.方法NIH小鼠正常组腹腔注射生理盐水,造模组和治疗组均注射羊红细胞(SRBC)致敏,治疗组经致敏后以苍耳子水煎剂灌胃,处理4 d后,分离小鼠脾淋巴细胞;提取总蛋白,双向凝胶电泳(2-DE)后,以计算机图像分析软件分析电泳图谱.结果致敏会引起多种蛋白质表达发生变化,而苍耳子可逆转其中部分蛋白质的变化.结论苍耳子可改善由致敏引起的小鼠脾淋巴细胞中部分蛋白表达的变化.     

吉兰-巴雷综合征相关空肠弯曲菌的蛋白质谱特征分析

目的 分析吉兰-巴雷综合征(GBS)相关空肠弯曲菌(Cj)与非GBS相关Cj的蛋白质谱特征。方法 利用双向电泳对这两类Cj各8株菌的全菌蛋白进行分离,比较蛋白质谱之间的差异,并对差异蛋白进行基质辅助激光解吸离子化飞行时间质谱(MALDI-TOF)分析。结果 比较发现20个差异蛋白,质谱分析鉴定出17个蛋白质,包括wlaX蛋白,参与能量代谢的苹果酸脱氢酶、磷酸丙糖异构酶、镍-铁还原酶小亚单位、半胱氨酸合成酶及支链氨基酸氨基转移酶,参与细胞加工处理过程的热休克蛋白、铁吸收ABC转运系统周质铁结合蛋白、烷基过氧化氢还原酶以及与细胞表面结构有关的鞭毛蛋白、UDP-N-乙酰烯醇式丙酮酸葡萄糖胺还原酶等。结论 wlaX蛋白可能与致GBS相关脂多糖的独特结构合成或细菌的毒力有关,wlaX蛋白及鞭毛蛋白有可能为GBS相关Cj的特征蛋白。