Application of trans-abdominal chorionic villus sampling in prenatal diagnosis of chromosomal diseases in first trimester of gestation

Objective:To evaluate the feasibility and safety of prenatal diagnosis by traneabdominal chorionic villus sam-pling(TA-CVS)via the guidance of B-mode ultrasound in the first trimester of gestation.To explore the technique of long time culture and chromosome preparation of villi in early pregnancy.To evaluate the feasibility of the above techniques in the application of the prenatal cytogenetic diagnosis.Methods:One hundred and thirty-five singleton pregnancies at risk were referred from January 2001 to Decem-ber 2007.Results:The average maternal age was 35.2 years.TA-CVS was performed in the 10～13th weeks of gestation and the average gestational age was 10.89 weeks.All attempts at sampling were successful.The rate of operation-associated fetal loss was 0.74%.The failure rate of prenatal diagnosis because of inadequate amount of specimen was 0.The average culture time was 5-7 days.The success rate of the cell culture was 98.5%.No maternal con-temination and bacterial contamination happened.Fifteen cases of abnormal karyotype and one case of confined pla-cantel mosaiciem were diagnosed.Conclusion:TA-CVS appears to be safe and feasible and might to be offered in the prenatal diagnosis in the first trimester of gestation.The technique of long time culture and chromosome preparation of villi is stable and reliable.It is feasible to apply these techniques in the clinical practice of prenatal cytogenetic diagnose in the early pregnancy.     

转染特异性报导基因成骨细胞生物学性状及其与骨支架材料生物相容性的研究

目的研究转染特异性报导基因成骨细胞的生物学性状，并观察该细胞在骨支架材料上的生长特性和黏附性。方法常规复苏培养转染12×SBE—OC—Luc报导基因的前成骨细胞株OCTl细胞，通过倒置相差显微镜、HE染色、I型胶原免疫组化法染色、碱性磷酸酶（ALP）偶氮偶联法染色、矿化结节茜素红法染色及四环素法染色观察该转基因成骨细胞的生物学性状；并将其与纳米磷酸钙复合骨支架进行体外复合培养，通过扫描电镜观察该转基因成骨细胞在骨支架材料上的生长特性和黏附性。结果转染12×SBE—OC—Luc报导基因的前成骨细胞株OCTl细胞经培养后能贴壁生长，形态和成纤维细胞相似，能分泌胶原基质和ALP，经I型胶原免疫组化法染色及ALP偶氮偶联法染色呈强阳性；并能够形成矿化结节，茜素红法染色及四环素法染色呈阳性；该转基因成骨细胞在骨支架材料上具有良好的生长特性和黏附性，并能正常分化、增殖和成熟，分泌大量胶原基质和钙结节。结论转染12×SBE—OC—Luc报导基因后成骨细胞生物学性状未发生改变，其与骨支架材料亦具有良好的生物相容性。     

诺新康与巴曲酶联用治疗进展性脑梗死的临床研究

目的观察诺新康联合巴曲酶治疗进展性脑梗死的临床疗效及其可能的作用机制。方法选择我院急性进展性脑梗死的患者为研究对象，随机分成两组，治疗组和对照组各26例，对照组予以常规治疗，治疗组在常规治疗的基础上加诺新康与巴曲酶。结果治疗组对神经功能缺损的治疗效果及控制梗死进展优于对照组。结论诺新康与巴曲酶联合对进展性脑梗死具有很好的治疗效果。     

Fas、Bcl-2在γ射线体外诱发的白血病小鼠骨髓细胞中的表达

目的 :观察 Fas、Bcl- 2在 γ射线体外诱发的急性淋巴细胞白血病小鼠骨髓细胞中表达情况 ,以探讨辐射致癌的机制。方法 :采用 4次 1.75 Gyγ射线全身照射 BAL B/ c小鼠诱发白血病模型 ,通过流式细胞仪对照射后白血病组、未癌变组及对照组小鼠骨髓细胞中 Fas、Bcl- 2的表达进行检测 ;应用抗 Fas抗体诱导细胞凋亡 ,进一步观察 Fas、Bcl- 2的表达对骨髓细胞凋亡的影响。 结果 :白血病小鼠骨髓细胞 Fas表达较未癌变组及对照组明显下降 (P<0 .0 1) ,而 Bcl- 2的表达明显增强 (P<0 .0 1) ;白血病小鼠骨髓细胞明显耐受抗 Fas抗体诱导的细胞凋亡。 结论 :Fas低表达、Bcl- 2高表达导致了细胞凋亡受到抑制 ,这可能是辐射引起小鼠急性淋巴细胞白血病的机制之一。     

经尿道钬激光切除膀胱肿瘤(附20例报告)

目的探讨经尿道钬激光膀胱肿瘤切除术的临床疗效和安全性。方法对20例膀胱肿瘤（Ta～T2a期）经尿道钬激光膀胱肿瘤切除，其中17例为初发肿瘤，3例为复发肿瘤。激光功率15～40W。小的肿瘤（直径〈1.0cm，窄蒂）直接汽化，大的肿瘤（直径〉1．0cm，宽带）自瘤体基底部切除，再将其周围1～2cm正常组织汽化、烧灼。结果20例膀胱肿瘤均一次切除，手术时间10～70min（直径〉1．0cm，宽蒂），平均30min。术中无闭孔神经反射、膀胱穿孔及水中毒发生，无输血。术后保留导尿时间1～5d，平均3d。16例随访3个月，4例随访半年，平均3．6月，均未见肿瘤复发。结论经尿道钬激光膀胱肿瘤切除疗效确切、安全性高。     

Emergency endovascular repair of iliac artery rupture caused by post-stenting angioplasty with an endograft

I liac artery rupture is a rare complication of post-stenting angioplasty and can lead to massive life-threatening haemorrhage. Conventional surgery can not repair the damaged vessel easily and may cause substantial blood loss and high operative morbidity and mortality. We report our experience with a self-expanding covered endoprosthesis for endovascular repair of the rupture of an iliac artery caused by stenting angioplasty.     

过敏康Ⅱ号胶囊对AsAb阳性大鼠睾丸Bcl-2、Bax表达影响的实验研究

目的观察过敏康Ⅱ号胶囊对AsAb阳性大鼠睾丸Bcl-2、Bax表达的影响。方法选取健康成年雄性SD大鼠60只，按体重随机分为正常组，模型组，对照组，高、中、低剂量组，每组10只。采用主动免疫法建立血清抗精子抗体（AsAb）阳性动物模型10只，灌胃给药，免疫组化方法观察药物对AsAb阳性大鼠睾丸Bcl-2、Bax表达的影响。结果过敏康Ⅱ号高剂量组睾丸生精细胞和精子Bcl-2表达的平均吸光值显著高于模型组（P〈0．01），而Bax表达的平均吸光值显著低于模型组（P〈0．01）。结论调节睾丸Bcl-2、Bax的表达是过敏康Ⅱ号清除或抑制AsAb起治疗作用的机制之一。     

Characteristics of the Bibliometric Indexes of Chinese Core Journals on Environmental and Occupational Medicine

This paper investigated the current characteristics and changing trends of major journals on Chinese environmental and occupational medicine in order to promote the development of these journals. This study focused on the seven core journals in the area of environmental and occupational medicine listed on the Chinese Scientific and Technical Journal Citation Reports (2008 version). These journals were China Occupational Medicine, Chinese Journal of Industrial Hygiene and Occupational Diseases, Chinese Journal of Industrial Medicine, Industrial Health and Occupational Diseases, Journal of Environment and Health, Journal of Environmental and Occupational Medicine, Occupation and Health. Various observations were based on data from www. cnki.net and Chinese Scientific and Technical Journal Citation Reports (2008 version), including cover of the journal, issue period, exposure to the internet, level of open source, impact factor, cited half-life, web immediacy index and rate of downloads per year. The outcomes showed that in appearance, the overall characteristics were continuous improvement of the covers, issue period, and moving toward the internet. In terms of contents, all factors had been improving.Nevertheless the level of influence was not very stable. The use of internet and the level of resource openness still have a long way to go to meet the international standard. There is still a huge gap for improvement. The contents and the appearance both need to be improved to serve the ever developing environmental and occupational medicine career.     

弥漫性大B细胞淋巴瘤中CD40L的表达及意义

目的探讨弥漫性大B细胞淋巴瘤（DLBCL）组织中CD40L表达与DLBCL预后间的关系及意义。方法免疫组织化学法检测27例弥漫性大B细胞淋巴瘤、20例淋巴结反应性增生组织中CD40L的表达。结果（1）DLBCL中CD40L过度阳性率（25．93％）显著低于淋巴结反应性增生（63．64％），P〈0．05。（2）CD40L在Ⅲ、Ⅳ期DLBCL过度阳性率（14．29％）低于Ⅰ、Ⅱ期（38．46％），P〈0．05。CD40L过度阳性率在有结外浸润DLBCL（11．76％）低于无有结外浸润DLBCL（40％），P〈0．05。（3）DLBCL患者CD40L的过度阳性率与远处转移、临床分期均显著相关，P〈0．05。结论（1）CD40L过度阳性率与结外器官浸润及临床分期密切相关，其可能作为判断DLBCL侵袭性及预后的指标。（2）DLBCL中CD40L表达的减少可能是影响其发病的因素之一。     

中鼻道及其周围结构的解剖学观测

目的　探讨临床上经上颌窦口进入上颌窦诊疗的途径。方法　在 40例成人尸体颅矢状切面上 ,对中鼻道、半月裂孔、上颌窦口及其周围结构进行解剖学观测及上颌窦口的探针插入试验。结果　中鼻道、半月裂孔的长度分别为5 6.3 6± 2 .5 8mm、2 1.46± 1.79mm ;40例中 ,2 8侧 (70 .0 0 % )的上颌窦口位于半月裂孔的中 1/3部 ;12侧 (3 0 .0 0 % )的上颌窦口位于半月裂孔的后 1/3部。上颌窦口的形态不一。上颌窦口的前后径为 3 .14± 0 .47mm。上颌窦口距鼻腔底部、鼻小柱的距离分别为 3 0 .41± 2 .85mm、49.5 2± 2 .3 7mm。鼻小柱到上颌窦口与到鼻腔基底面连线的夹角为 40 .2± 3 .7°。 3 7侧 (92 .5 0 % )的上颌窦口能用直径≤ 2 .5mm的探针穿过。结论　经上颌窦自然开口行上颌窦口穿刺是安全、简便和有效的一种诊治方法。