IGF-1与矽肺纤维化的关系

目的了解胰岛素样生长因子１（ＩＧＦ１）与矽肺纤维化的关系。方法用免疫组化（ＳＡＢＣ法）技术对大白兔染石英尘后９０天、１８０天兔肺组织ＩＧＦ１表达及矽结节数目进行研究。结果染尘后９０天、１８０天兔肺组织ＩＧＦ１阳性表达率分别为７０％和１００％（Ｐ＜００１）,染尘后９０天、１８０天兔肺组织矽结节平均数分别为１９８±２０和３０３±１１（Ｐ＜０００５）,肺组织ＩＧＦ１阳性表达强度与肺纤维化程度存在明显相关（ｒ＝０６８５７）。结论ＩＧＦ１可能在矽肺纤维化形成过程中发挥重要作用。     

DADE DIMENSION—RXL型全自动生化分析仪性能评价

目的：评价美国杜邦ＤＩＭＥＮＳＩＯＮ—ＲＸＬ全自动生化分析仪的工作性能。方法：用ＤＡＤＥ试剂及定值血清对该仪器的准确度、精密度及交叉污染等进行了观察。结果：对包括酶活性及电解质在内的十二项待测物进行了测试,其结果均位于可信范围内。精密度观察：批内不精密度的ＣＶ％为０．０７－１．４５％,批间不精密度ＣＶ％为０．５８－１．９５％。交叉污染率为０－０．５５１％。结论：通过准确度、精密度和交叉污染实验观察,作者认为该仪器可以满足临床化学实验室的要求。     

整体奋进攻坚破难全力做好灾区防疫灭病宣教工作

１９９８年特大洪水已经退去。然而,灾害给人们心灵和精神带来的创伤永远不会抹去。在人与洪灾抗争中,我们对灾区不应仅仅停留在物质上、经济上的援助,更重要的是给予精神上的关怀和知识上的帮助。为达到促进生产、重建家园、抵御疾病、保护生产力的目的,做好灾区防疫...     

2型糖尿病核心家系的遗传易感性研究

通过对２型糖尿病（ＮＩＤＤＭ）核心家系的分析,探讨了遗传因素在核心家系成员中所起作用的程度。结果表明：病例核心家系一级亲属ＮＩＤＤＭ 的发病率非常显著的高于对照组,χ２ ＝ １７．０,Ｐ＜ ０．００１,相对危险度（ＲＲ）为３．３０,９５％ 可信区间为１．８０～６．０５。不论父母、同胞和子女,均以病例亲属的发病率显著高于对照;病例组各亲属中,不论男女和年龄,标准化发病率比（ＳＩＲ）均明显高于对照人群的１００,经统计学Ｚ检验有极显著意义;病例核心家系的ＲＲ、归因危险度（ＡＲ）％ 也明显较高,进一步说明血缘关系与ＮＩＤＤＭ 之间有较强的联系。     

胎儿先天性心脏病筛查方法的研究

为尽早确诊胎儿先天性心脏病(简称先心病),对200例胎儿进行B超心动图检查,发现心脏异常36例(18%),其中先心病26例(13％)。测定有高危因素的103例孕母血清风疹病毒抗体IgM,10例阳性(9.7％),其中7例胎儿有先心病(70%),其灵敏度为70％,特异度为92.3％,可做为胎儿先心病的筛查方法。两项检查合用,可提高胎儿先心病的诊断水平。同时提示胎儿超声心动图检查中增加卵圆孔直径和血流的评定可作为房间隔缺损的诊断标准。     

经鼻(面)罩机械通气治疗慢性阻塞性肺疾病呼吸衰竭

目的观察慢性阻塞性肺疾病（ＣＯＰＤ）呼吸衰竭患者经鼻（面）罩机械通气的效果。方法对２９例慢性阻塞性肺疾病呼吸衰竭患者行经鼻（面）罩机械通气。结果治疗后２小时、２４小时、４８小时、１周后,ｐＨ从７．２８±０．１上升至７．３４±０．０７、７．３５±０．０６、７．３８±０．０５、７．３７±０．０７（Ｐ＜０．０１）,ＰａＣＯ２从９４．６９±１８．４ｍｍＨｇ下降至８６．０５±２４．６ｍｍＨｇ（Ｐ＜０．０１）、７７．７６±１９．３ｍｍＨｇ（Ｐ＜０．０１）、６８．６０±１１．４ｍｍＨｇ（Ｐ＜０．００１）、６６．６９±２６．９ｍｍＨｇ（Ｐ＜０．００１）,ＰａＯ２从５２．７２±１３．１ｍｍＨｇ上升至６４．２５±２４．５ｍｍＨｇ（Ｐ＜０．０５）、６９．０１±１６．６ｍｍＨｇ（Ｐ＜０．００２）、７５．２７±３２．８ｍｍＨｇ（Ｐ＜０．００１）、９１．１６±４０．４ｍｍＨｇ（Ｐ＜０．００１）。临床症状明显改善,有效率７５．９％。结论经鼻（面）罩机械通气对轻、中度的患者有较好的疗效。     

营养教育改善农村儿童营养状况的研究

本文通过１９９７年基线调查,选择９个村０—３岁儿童作为实验组（以下简称实验组）进行营养教育,３个村０—３岁儿童作为对照组（简称对照组）,１９９８年进行终期评估。结果表明：６—１２个月儿童,营养不良发病率较高,而这一年龄段儿童贫血患病率也较高。经营养教育后实验组中重度发育迟缓、低体重及消瘦儿童患病率分别下降了２８．１４％、６．２１％、６．８２％,对照组下降了２５．６３％、－１．４８％、８．４８％,实验组轻度贫血率下降４７．２４％,对照组下降３５．９２％,可见,营养教育工作对改善农村儿童营养状况,取得了良好的效果。     

侧脑室—腹腔分流治疗脑积水62例报告

目的　探讨脑积水的治疗方法和疗效。方法　62例均行侧脑室-腹腔分流术。脑室端从枕角穿入10cm接引流泵,再从皮下隧道引至上腹或左下腹放入腹腔。结果　1～4周后复查,症状完全消失56例,部分改善5例,无变化1例。57例复查CT示:52例脑室恢复正常,4例脑室较前缩小,1例无变化。堵管9例。低颅内压2例,硬膜下血肿2例,经保守治疗痊愈。49例随访1～8年,41例能正常工作学习,5例生活自理,1例植物生存,2例死亡。结论　明确诊断,掌握手术适应症及手术技巧是成功的关键。     

Complete nucleotide sequence and genomic organization of a primate calicivirus, Pan-1

Summary.  The primate calicivirus, Pan-1, was originally isolated from several primate species. It displayed typical calicivirus morphology by electron micro-scopy. We determined the genomic sequence of Pan-1 by cDNA cloning and direct RNA sequencing. Pan-1 shares a similar genomic organization and a high degree of sequence identity with feline caliciviruses. The Pan-1 genome contains 8 304 nucleotides, plus a poly-A tail, and is longer than any other calicivirus strains with a completely known sequence. The extra sequences of Pan-1 include a unique 424-nucleotide sequence at the 5′ end of ORF1, additional amino acids at the N-terminus of the capsid, and a longer 3′ UTR. Received March 20, 1998 Accepted July 22     

The fetus and the maternal immune system: pregnancy as a model to study peripheral T-cell tolerance

In this article, we discuss recent findings that describe how maternal T cells respond upon encountering fetal antigens. Many earlier studies have characterized changes in the maternal T-cell repertoire of both humans and mice, yet it has been difficult to understand the significance of these findings since there has been no way to decipher if the alterations were the result of encounters with fetal antigens or were nonspecific changes related to pregnancy itself. Now, in the mouse, the availability of TCR transgenic mice and other technological advances allow direct visualization of the fate of maternal T cells that are reactive to the fetus and provide a means to probe the mechanisms by which tolerance to the fetus is maintained. This article focuses on how the fetus more closely resembles "developmental self' than a true allograft and how the study of maternal T-cell interactions with fetally derived antigens can be useful as a model for the study of peripheral T-cell tolerance.