Recurrent, multiple, calcified soft tissue metastases from osteogenic sarcoma without pulmonary involvement

Osteosarcoma (osteogenic sarcoma) metastasizes primarily to the lung. With the introduction of neoadjuvant chemotherapy as part of the treatment, the overall and disease-free survival rates have dramatically improved. In this case report, a young man with multiple soft tissue and bone metastases, including a rare large bone-forming retroperitoneal metastasis, is described. Despite the extensive extrapulmonary metastases, the patient did not develop pulmonary metastases in the 4 years following initial presentation of the primary tumour. Received: 16 December 1998 Revision requested: 14 January 1999 Revision received: 30 July 1999 Accepted: 1 August 1999     

Unicentric osteosarcoma of bone with subsequent skeletal metastases

Five cases of unicentric osteosarcoma with subsequent skeletal metastases are reviewed. Skeletal metastases may occur prior to pulmonary metastases in such patients. Initial and periodic bone scanning is therefore justified since early detection of distant bone lesions may have important therapeutic implications. A classification of multiple site osteosarcoma based upon clinical, pathologic, and radiologic characteristics is proposed.     

若干疾病中医证的流行病学研究进展

以流行病学在病证结合的中医“证”研究中的应用为线索，光盘检索和手工查阅了1997—2002年的期刊文献，对若干疾病运用流行病学方法进行的大样本(100例以上)的中医证型临床研究结果作一个回顾和小结，从流行病学和统计学的角度分析科研和论文中存在的问题，提出改进方法和展望。     

生化过程工程与中药现代化

在生化工程20余年的研究工作基础上。结合中药现代化开展了一些技术、材料与设备的研究开发工作。研究植物细胞、组织、器官大规模培养增殖技术，应用于细胞代谢产物、生物转化和人工育种及发根，实现了工厂化生产，并成功研制多种类型的生物反应器；在原有化学工程提取分离技术的基础上，发展了反应分离耦合、微波辅助提取等新技术，实现了高效浸出，并且节能、节水；此外，又发展了包括反胶团萃取、一步三相萃取青霉素、泡沫分级分离、膜分离、高速逆流色谱分离纯化等新技术。高速逆流色谱技术是一种没有固相载体的液一液多级逆流萃取技术，避免了不可逆吸附，已成功用于多种天然产物的分析和分离，作为研究中药指纹图谱的新方法具有很好的精密度和重现性。高效液相色谱、气相色谱、毛细管电泳、质谱等技术在指纹图谱研究中发挥了重要作用。与此同时，还研制了多种分离介质，并在药物的修饰与包埋方面做了大量工作。另外，在海洋药物研究领域，创造了连续培养连续采收的新流程、新技术．进行了转基因藻的培养。用于生产基因工程产品。     

蛋白酶体抑制剂Z-LLL-CHO对人骨肉瘤细胞株MG-63作用的体外研究

目的　探讨蛋白酶体抑制剂Z LLL CHO对人骨肉瘤细胞株MG 63的作用 ,并探讨其作用机制。方法　将不同浓度的Z LLL CHO作用于骨肉瘤细胞株MG 63 ,采用荧光显微镜观察细胞形态改变、电镜观察细胞超微结构变化、MTT法检测细胞增殖活力、琼脂糖凝胶电泳检测细胞凋亡、流式细胞仪分析细胞凋亡率及细胞周期改变。结果　Z LLL CHO可有效抑制MG 63细胞株的生长 ,并诱导细胞发生凋亡。凋亡细胞表现为浓染致密的颗粒块状荧光 ,胞核固缩、染色质凝聚并边缘化 ,DNA呈“阶梯状”排列的条带。流式细胞仪分析显示 ,Z LLL CHO在 1.0 μmol/L作用 2 4h、3 6h、48h后 ,细胞凋亡率分别为 5 .4%、2 0 .5 %、5 2 .7%。随药物浓度增高及作用时间延长 ,细胞周期被阻滞于G2 /M期。结论　蛋白酶体抑制剂Z LLL CHO可有效抑制人骨肉瘤MG 63细胞株的生长增殖 ,阻滞细胞周期及诱导细胞凋亡可能起重要作用。     

68例骨肿瘤致病理性骨折的治疗

目的:研究不同的外科治疗方法对骨肿瘤病理性骨折患者预后的影响.方法:自1995年6月～2002年10月共收治68例病理性骨折.引起病理性骨折的肿瘤中,转移癌27例(转移至四肢17例,脊柱8例,锁骨2例).原发恶性肿瘤20例(骨肉瘤13例,尤文氏肉瘤3例,软骨肉瘤2例,恶性纤维组织细胞瘤2例).良性肿瘤21例(骨巨细胞瘤12例,骨囊肿4例,内生软骨瘤及动脉瘤样骨囊肿各2例,纤维异样增殖症1例).通过回顾性分析研究,对其临床表现、诊断、治疗进行初步临床分析.结果:随访6个月～7.2年,转移癌中7例行局部广泛切除,假体置换,未见局部复发,功能良好.8例行病灶刮除,髓内针内固定,其中4例死亡,3例局部复发.13例骨肉瘤患者,9例对化疗敏感,行保肢手术,术后未见局部复发,预后良好,4例对化疗不敏感,行截肢术,术后均有肺转移.12例骨巨细胞瘤,7例行肿瘤广泛切除,假体置换,术后随访未见局部复发.5例行病灶刮除,骨水泥填充,其中3例复发.结论:对于转移癌、骨巨细胞瘤和一些良性肿瘤所致的病理性骨折,肿瘤的彻底切除和假体置换对于控制局部复发是有效的,并可获得良好的功能.对化疗敏感的骨肉瘤患者,即使骨折,经过化疗和适当处理后,也可行肿瘤的彻底切除和假体置换,也可获得良好的局部控制和降低肺转移发生率.     

骨肉瘤的远处骨转移(附5例报告)

目的：探讨骨肉瘤远处骨转移的临床表现，诊治过程及预后情况．方法：对我科1993年6月～1999年9月收治的5例骨肉痛发生远处骨转移患者进行回顾性分析总结结果：5例中3例为多发骨转移灶，2例为单发骨转移灶：4例合并肺转移，1例合并淋巴结、心包转移．经随访4～36个月，平均15.4个月，4例死亡，1例生存，结论：骨肉瘤的远处骨转移均为超关节的血行转移，两处以上骨转移灶者的生存期低于单发骨转移灶者，合并其它脏器转移者预后更差化疗加适宜的手术是治疗此类患者较有效的方法。     

BRCA1基因反义寡核苷酸对人骨肉瘤细胞的影响

 目的　探索抑癌基因BRCA1基因反义寡核苷酸对人骨肉瘤细胞SOSP 96 0 7的影响。方法　通过细胞培养 ,测量细胞生长曲线、计算细胞集落形成率、检测细胞周期等 ,观察BRCA1基因反义寡核苷酸对人骨肉瘤细胞系SOSP 96 0 7的影响。结果　BRCA1基因反义寡核苷酸浓度为 1 0 μmol/L时 ,骨肉瘤细胞的生长速度变快 ,集落形成率明显增高 ;流式细胞仪检测发现其引起细胞周期变化 ,细胞增殖活性提高。结论　BRCA1基因反义寡核苷酸对人骨肉瘤细胞SOSP 96 0 7有明显的影响 ,使得骨肉瘤细胞恶性生物学特性更加显著 ,提示BRCA1基因在人骨肉瘤发展过程中起作用     

Study on mechanism of huanshao dan in brain protectionΔin brain protectionΔ

Objective: To observe the behavioral and biochemical effects of a traditional Chinese medicine Huanshao Dan (HSD) on learning and memory deficits in transient cerebral ischemia model in mice.Methods: Step-through experiments, receptor binding test and choline acetyltransferase (ChAT) activities determination were performed.Results: Mice undertaken transient ischemia commited much more mistakes in step-through experiments and showed relatively higher³ H-MK801 binding in cerebral cortex and hippocampus than in sham operated animals. HSD decoction was most effective in reducing these mistakes in mice. At the same time, and³ H-MK801 binding of cerebral cortex and hippocampus tissues were also significantly decreased, while ChAT activities in the same tissues were increased.Conclusion: HSD might antagonize ischemic injury of brain through inhibition of glutamate N-methyl-D-Aspartic acid receptor overactivity. ΔThis program was supported by National Nature Science Foundation of China (No.39421012)     

The value of intraoperative cystoscopy in urogynecologic and reconstructive pelvic surgery

OBJECTIVE: Our goal was to evaluate the role of intraoperative cystoscopy during surgery for pelvic organ prolapse and urinary incontinence. STUDY DESIGN: Charts of 224 consecutive patients who had intraoperative cystoscopy performed after urogynecologic surgery were reviewed. RESULTS: Nine injuries occurred that were unsuspected before cystoscopy, for an incidence of 4%. Six ureteral ligations occurred, four after Burch cystourethropexy and two after vaginal culdoplasty. Intravesical sutures were noted after two Burch procedures, and another injury occurred with passage of fascia lata through the bladder during a pubovaginal sling procedure. Eight injuries were managed by removal and replacement of the suture or sling with only one requiring ureteroneocystotomy. When patients with injuries were compared with those without, there were no statistical differences in demographic or surgical parameters. CONCLUSIONS: The potential for damage to the lower urinary tract is significant with complex urogynecologic surgery. Because of the increased and delayed morbidity associated with unrecognized injury, intraoperative surveillance cystoscopy should be considered a part of all such procedures.(Am J Obstet Gynecol 1997;177:71)