高压液相色谱纯化肾综合征出血热病毒血凝素及其性状分析

用吐温８０－乙醚（ＴＥ）法、蔗糖－丙酮（ＳＡ）法、丙酮－乙醚（ＡＥ）法分别从肾综合征出血热病毒（ＨＦＲＳＶ）感染的Ｖｅｒｏ－Ｅ６细胞培养和乳小白鼠脑组织中制备病毒血凝素（ＨＡＮ），定量对比证明其制备效果，结果无明显差异。粗制ＨＡＮ经高压液相色谱（ＥＰＬＣ）纯化，有４个洗脱峰，血凝活性物质存在于峰１。纯化ＨＡＮ在ＳＤＳ－ＰＡＧＥ中呈单一区带，分子量５６．６ＫＤ，ＨＡＮ相对含量７９．６％。纯化ＨＡＮ在蔗糖密度梯度液中有一条１．１５～１．１６ｇ／ｃｍ３的沉淀，粗制ＨＡＮ有３条沉淀。电镜观察纯化ＨＡＮ中为大小相等的球状颗粒。粗制ＨＡＮ的高密度沉淀中可见到病样颗粒。对几种常用消毒剂、氧化剂、去垢剂对ＨＡＮ的灭活作用做了实验对比观察。     

Cyclic hormonal replacement therapy after the menopause: Transdermal versus oral treatment

Summary In an open, randomized, comparative, between-patient trial, 45 postmenopausal women were treated for 4 months with cyclical transdermal oestradiol 0.05 mg per day or oral conjugated equine oestrogens 0.625 mg per day, in both cases, plus, medroxyprogesterone acetate 10 mg per day on the last 8 days of each cycle. Similar relief from postmenopausal symptoms was obtained with both treatments. Post-treatment histological evaluation of the endometrium did not reveal neoplastic or hyperplastic change in any patient.Early follicular-phase plasma oestradiol levels were observed only after transdermal oestradiol. There was a significant reduction in serum total cholesterol and LDL cholesterol in both treatment groups, with no difference between treatments, whereas serum triglyceride levels were decreased only by transdermal oestradiol. Plasma calcium and phosphorus fell significantly and serum intact parathyroid hormone rose significantly, with no difference between the therapies. No significant changes were observed in clotting factors.Transdermal oestradiol appears to be an effective and safe hormonal replacement therapy, and this route of administration may be responsible for the more useful action of the drug on serum lipids and plasma oestradiol levels.     

老年性白内障手术心电监护

目的：评价老年性白内障超声乳化伴人工晶体植入术心电监护的临床意义。方法：随机选择老年性白内障超声乳化伴人工晶体植入术行心电监护244例（287只眼）。结果：手术中出现血压明显升高，心肌缺血及心律失常者114例，经及时处理后恢复。结论：老年性白内障患者，术中行心电监护对提高手术安全性十分重要。     

长沙地区孕妇CMV感染状况及其临床追踪观察

研究了７７例长沙地区孕、产妇的宫颈排毒（ＣＭＶ）情况及母、婴的免疫状态，并对宫颈排毒及ＣＭＶ一ＩｇＭ阳性的母亲所生小孩进行临床追踪。结果显示：孕妇宫颈排毒率为４．５％，抗ＣＭＶ－ＩｇＧ和抗ＣＭＶ－ＩｇＭ阳性率分别为７７％和１３％，５９例脐血ＣＭＶ－ＩｇＭ阴性。宫颈排毒的３例其抗体检测抗ＣＭＶ－ＩｇＧ均阳性，抗ＣＭＶ－ＩｇＭ仅一例阳性。作者认为，对妊娠期活动性ＣＭＶ感染的诊断，仅检测抗ＣＭＶ－ＩｇＧ和抗ＣＭＶ－ＩｇＭ抗体滴度仍不足，尚须结合病毒分离和其它检测手段。     

老年心房颤动病人华法林抗凝治疗的有效性安全性评价

目的　评价华法林用于老年心房颤动病人抗凝治疗的有效性、安全性。方法　选择符合本研究抗凝标准的132例老年心房颤动病人随机分为两组 ,华法林治疗组 (治疗组 ) 5 8例 ,给予华法林 3mg/ d开始 ,监测凝血酶原时间(PT)及国际标准化比值 (INR) ,7～ 15 d使 INR达到 1.8～ 2 .5范围内 ,以后每月查 1次 INR。若病人增加或减少药物有出血倾向时随时再测 INR。阿司匹林对照组 (对照组 ) 74例 ,给予阿司匹林 30 0 mg/ d,分 2次口服 ,密切随访。结果　治疗组 7～ 15 d,平均 (9.1± 2 .8) d,INR达 1.8～ 3.0 (平均 2 .1± 0 .13) ,其中 INR在 1.8～ 2 .5 (平均 1.92±0 .2 3)之间者占 92 .7% ,治疗组有 1例心瓣膜病人出现脑梗死 ,而对照组有 7例发生脑梗死 ,差异显著 ,其余不良反应率两组差异无显著性。结论　老年心房颤动病人选择华法林 2～ 3mg/ d时 ,加强服药后监测及各药物间的相互作用 ,使 INR保持在 1.8～ 2 .5之间是有效、安全的     

Infant and Neonatal Mortality for Primary Cesarean and Vaginal Births to Women with “No Indicated Risk,” United States, 1998–2001 Birth Cohorts

ABSTRACT: Background: The percentage of United States’ births delivered by cesarean section has increased rapidly in recent years, even for women considered to be at low risk for a cesarean section. The purpose of this paper is to examine infant and neonatal mortality risks associated with primary cesarean section compared with vaginal delivery for singleton full‐term (37–41 weeks’ gestation) women with no indicated medical risks or complications. Methods: National linked birth and infant death data for the 1998–2001 birth cohorts (5,762,037 live births and 11,897 infant deaths) were analyzed to assess the risk of infant and neonatal mortality for women with no indicated risk by method of delivery and cause of death. Multivariable logistic regression was used to model neonatal survival probabilities as a function of delivery method, and sociodemographic and medical risk factors. Results: Neonatal mortality rates were higher among infants delivered by cesarean section (1.77 per 1,000 live births) than for those delivered vaginally (0.62). The magnitude of this difference was reduced only moderately on statistical adjustment for demographic and medical factors, and when deaths due to congenital malformations and events with Apgar scores less than 4 were excluded. The cesarean/vaginal mortality differential was widespread, and not confined to a few causes of death. Conclusions: Understanding the causes of these differentials is important, given the rapid growth in the number of primary cesareans without a reported medical indication. (BIRTH 33:3 September 2006)     

颈椎椎体次全切除钛网钉板系统的临床应用

目的探讨颈椎前路椎体次全切除钛网钉板植骨融合的临床效果。方法自2001年3月～2003年3月间应用颈前路椎体次全切除钛网植骨融合及钉板固定治疗颈椎管狭窄性疾病22例，其中4例患者行2椎体次全切除3节椎间隙减压手术。术后观察减压、固定、融合及神经功能恢复情况，并行X线摄片或CT扫描检查。结果患者获6～12个月随访，神经功能得到不同程度改善，无加重情况。椎间隙高度无丢失、无成角，均获得骨性融合。术后3d在颈围领固定下下床活动，4周后可恢复较轻工作。结论此术式可避免传统手术方法的缺点，即不取自体髂骨，融合率高，稳定性好，并减压彻底，疗效好，是一种值得推广的新技术。     

核仁形成区嗜银蛋白定量对结肠癌前病变的监测作用

应用银染技术,对24例结肠腺癌Ⅱ级不典型增生,30例绒毛状腺瘤,14例绒毛状腺瘤Ⅲ级不典型增生和29例高分化管状腺癌进行银染核仁形成区嗜银蛋白(Ag-NORs)定量研究,观察Ag-NORs数量、形态、大小和分布在结肠肿瘤交界性病变中的表达.提示Ag-NORs四项指标定量研究对结肠脉瘤,特别是Ⅲ级不典型增生与绒毛状腺瘤之结肠癌前病变有较好的监测作用.     

辐照氟银猪皮的实验研究

报道辐照氟银猪皮的制备、实验检测（弹性、创面粘附力和透水性测定，含银量测定）组织学检查细菌检测及抑菌试验研究，结果表明：辐照氟银猪皮除延伸度低于未辐照猪皮外，其撕裂强度、创面粘合力和透水性均与未辐照猪皮相似。组织学检查示：辐照氟银猪皮组织结构完整，表皮细胞部分空泡形成。组织细菌检测证明其无菌生长，达到无菌要求。抑菌试验证明对金黄色葡萄球菌、绿脓杆菌、大肠杆菌、变形杆菌、克雷伯氏菌均有极强的抑菌作用