益气活血中药对放射性骨损伤防护作用的实验研究

目的 :探讨益气活血中药防治放射性骨损伤的作用。方法 :60Coγ射线一次 3 0Gy照射兔后腿造模 ,实验组用中药 6个月 ,对照组不做治疗。不同时相观察照射部位骨细胞、血管变化、血管铸型、血流情况。结果 :骨细胞变性坏死在呈持续发展 ,尤其第 6周时尤为明显 ,对照组为 2 7% ,实验组为 8% ,差异明显 ,血管铸型 1 3周血管网逐增加 ,呈囊性扩张融合成片 ,以后渐减少 ,2 4周时实验组血管数目明显多于对照组。血流两组 3周时为著 ,6周后呈持续下降 ,但对照组明显 (P <0 .0 1 )。讨论 :益气活血中药能减轻射线对骨细胞及其它组织的直接杀伤 ,减轻对骨血管损伤 ,改善骨微循环及血流。     

水肿辨治

外邪侵袭或禀赋不足,水湿停聚,溢于肌肤,引发水肿,亦可见于现代医学的多种疾病中。西医治疗疗程长,易反复,用药复杂,副作用明显,价格昂贵。中医辨证论治,中药汤剂、针刺、灸法各具特色,疗程短,疗效显著,无副作用,易于接受,值得推广。     

Cyanobacteria and their toxins in treated-water storage reservoirs in Abha city, Saudi Arabia.

Occurrence of toxic cyanobacteria in drinking and recreational waters poses human health at risk as they can release potent toxins into the water. In the present study, open and covered treated-water storage reservoirs as well as their relevant tap waters in Abha city, Saudi Arabia, were surveyed for the presence of cyanobacteria and their toxins. The results revealed the contamination of most open reservoir and tap waters by algae and cyanobacteria, with an abundance of toxigenic species of cyanobacteria. Depending on the results of the Limulus amebocyte lysate (LAL) assay and enzyme linked immunosorbent assay (ELISA), endotoxins and microcystins (MCYSTs) were found in most open reservoir and tap waters at concentrations up to 32EUml(-1) and 0.3mugml(-1), respectively. The extracts of axenic cultures of most cyanobacterial species isolated from these reservoirs showed activity to LAL assay, with large endotoxin amounts obtained in Calothrix parietina (490EUg(-1)) and Phormidium tenue (210EUg(-1)). Based on ELISA and HPLC analysis for these extracts, only C. parietina can produce MCYSTs (202mugg(-1)) with a profile consisting of MCYST-RR and -LR. This study suggests that open treated-water storage reservoirs should be covered to prevent the presence of cyanobacteria and their toxins in such drinking and recreational waters.     

溴氰菊酯泡腾片浸泡蚊帐对淡色库蚊和致倦库蚊的灭效观察

目的在实验室内观察溴氰菊酯泡腾片及乳油浸泡蚊帐对淡色库蚊和致倦库蚊的灭效。方法强迫接触法。结果当药剂浓度为2mg·ai／m2时，溴氰菊酯2种剂型浸帐对淡色库蚊的杀灭效果均达到100％，当药剂浓度达到10mg·ai／m2时，其对致倦库蚊杀灭效果不足100％。溴氰菊酯泡腾片浸泡蚊帐杀灭淡色库蚊的LC50为0．23mg·ai／ml，而乳油浸帐的LC50为0．31mg·ai/ml，方差分析结果表明，二者差异有统计学意义（t=3．04，P=0．023）；溴氰菊酯2种剂型浸帐对致倦库蚊的LC50分别为1．16和1．33mg·ai／ml，差异无统计学意义（t=1．65，P=0．470）。溴氰菊酯的2种剂型均采用5、10和20mg·ai／nl2 3种浓度浸泡蚊帐，对淡色库蚊和致倦库蚊的毒杀效果随着药物浓度的增高，LT50值明显缩短；溴氰菊酯泡腾片浸泡蚊帐对2种蚊虫的灭效均稍强于乳油浸泡蚊帐，且泡腾片浸泡蚊帐对2种蚊虫的击倒死亡时问均短于乳油浸帐。结论溴氰菊酯泡腾片作为一种新剂型浸泡蚊帐具有良好的灭蚊效果。     

肝阳虚证探析

本文以阴阳普遍存在的法则及藏象学说为依据，从有关肝阳虚的理论依据，肝阳的生理功能，肝阳虚的病因病机，证治等方面阐述了肝阳的生理特点与肝阳不足的辨证论治。     

Resistance to adhesion formation: A comparative study of treated and untreated mesh products placed in the abdominal cavity

Background: New materials have been devised to prevent postoperative adhesions when placing a prosthesis in contact with abdominal contents. Methods: Eighty rats underwent laparotomy and denudation of the serosa of the cecum and peritoneal covering of the abdominal wall. Five treated mesh products (Parietex Composite, Parietene Composite, Bard Composix E/X, Sepramesh, and Gore-Tex Dual Mesh) and one untreated mesh product (untreated Parietene) were randomly placed between the cecum and abdominal wall. A group without mesh was used as control. The animals were sacrificed at 21 days following surgery and analyzed for the presence of adhesions.Results: The incidence of adhesion formation, mean adhesion area, maximum adhesion length, and strength of adhesion separation were similar between Parietex Composite, Parietene Composite, and Bard Composix E/X, and they were significantly less than with Sepramesh, untreated Parietene, and the control group. Gore-Tex Dual Mesh resulted in less adhesions, adhesion area, mean strength of separation, and work of separation than the untreated Parietene group and the control group. Sepramesh resulted in less strength and work of separation compared to the control group. Conclusions: The incidence of adhesions and work and strength of adhesion separation are reduced when using a treated mesh, compared to the untreated mesh and the control group without mesh. Parietex Composite, Parietene Composite, Bard Composix E/X, and Gore-Tex Dual Mesh were superior to Sepramesh, untreated Parietene, and the control group in the prevention of adhesion formation.Disclosure statement: This study was sponsored by: Sofradim, Trévoux, France     

重症胰腺炎非手术治疗41例

目的:介绍并讨论急性出血坏死性胰腺炎早期非手术治疗适应证,措施和中转手术指征。方法:总结我院外科1988年1月至1998年1月收治的41例急性出血坏死性胰腺炎的诊断治疗经验。结果:41例病人假性胰腺囊肿并发症3例,肺部感染4例,无严重并发症32例;中转手术6例,死亡2例,死亡率4.8%。     

37例老年睡眠呼吸暂停低通气综合征射频消融治疗的临床研究

目的 探讨射频消融治疗对老年睡眠呼吸暂停低通气综合征(OSAHS)的疗效.方法 选择多导睡眠图(PSG)确诊的老年患者37例,术前检测呼吸紊乱指数(AHI)的最低氧饱和度(LSpO2),射频消融治疗手术后2个月再行AHI、LSpO2检测.结果 老年OSAHS患者经射频消融治疗后AHI显著降低(P＜0.01),LSpO2...