Propofol and Sevoflurane in Subanesthetic Concentrations Act Preferentially on the Spinal Cord: Evidence from Multimodal Electrophysiological Assessment

Background: Animal experiments in recent years have shown that attenuation of motor responses by general anesthetics is mediated at least partly by spinal mechanisms. Less is known about the relative potency of anesthetic drugs in suppressing cortical and spinal electrophysiological responses in vivo in humans, particularly those, but not only those, connected with motor responses. Therefore, we studied the effects of sevoflurane and propofol in humans using multimodal electrophysiological assessment.

Methods: We studied nine healthy volunteers in two sessions during steady state sedation with 0.5, 1.0, and 1.5 [mu]g/l (targeted plasma concentration) propofol or 0.2 and 0.4 vol% (end-tidal) sevoflurane. Following a 15-min equilibration period, motor responses to transcranial magnetic stimulation and peripheral (H-reflex, F-wave) stimulation were recorded, while electroencephalography and auditory evoked responses were recorded in parallel.

Results: At concentrations corresponding to two thirds of C50 awake, motor responses to transcranial magnetic stimulation were reduced by approximately 50%, H-reflex amplitude was reduced by 22%, F-wave amplitude was reduced by 40%, and F-wave persistence was reduced by 25%. No significant differences between sevoflurane and propofol were found. At this concentration, the Bispectral Index was reduced by 7%, and the middle-latency auditory evoked responses were attenuated only mildly (Nb latency increased by 11%, amplitude PaNb did not change). In contrast, the postauricular reflex was suppressed by 77%.     

澳／中FTA能否增强通用名药

据澳大利亚国立大学的Thomas Faunce说，澳大利亚与中国建立两国自由贸易协定（FTA）的商谈时，应认识到该协定为澳大利亚通用名药工业提供了机会。他还建议FTA中应包括一个医药工作委员会。     

Pfizer收购Idun医药公司

世界上最大的制药商Pfizer公司称已就收购Idun医药公司达成协议。后者是一家美国私营企业，致力于发现与开发控制细胞凋亡（一种涉及许多疾病过程的程序性细胞死亡）的药物。     

“不批准”函打击Calmactin

Solvay制药公司的治疗以腹泻为主肠易激综合征的研究性药物Calmactin（cilansetron，西兰司琼）（Ⅰ）在接到美国FDA不批准函后，在美国上市的时间将会考虑推迟。     

Risk of Respiratory Complications and Wound Infection in Patients Undergoing Ambulatory Surgery: Smokers versus Nonsmokers

Background: Smoking is considered to be a risk factor for patients undergoing surgery and anesthesia, but it is unclear whether this is applicable to patients undergoing ambulatory surgery. The aim of this study was to determine the risk of respiratory complications and wound infection among smokers.

Methods: The authors studied a random selection of 489 adult patients undergoing ambulatory surgery. Smoking status was determined by self-report and confirmed with end-expired carbon monoxide analysis. The risk of respiratory complications (i.e., desaturation, cough, laryngospasm, bronchospasm, breath-holding, or apnea) and wound infection (i.e., wound redness or discharge +/- positive microbial culture, requiring antibiotic therapy) in smokers versus nonsmokers was ascertained. Odds ratios were estimated from multivariable logistic regression and adjusted for age, gender, body mass index, partner's smoking status, domiciliary smoking exposure, and extent and duration of surgery.

Results: Most smokers continued to smoke up until the day of surgery. Smokers had a higher rate of respiratory complications (32.8%vs. 25.9%; adjusted odds ratio, 1.71; 95% confidence interval, 1.03-2.84;P = 0.038) and wound infection (3.6%vs. 0.6%; odds ratio, 16.3; 95% confidence interval, 1.58-175;P = 0.019). Odds ratios comparing current plus ex-smokers with nonsmokers were of similar magnitude for most of these complications.     

An Analysis of Chromosome on Sterility Caused by Azoospermia or Oligospermia

ＡｎＡｎａｌｙｓｉｓｏｆＣｈｒｏｍｏｓｏｍｅｏｎＳｔｅｒｉｌｉｔｙＣａｕｓｅｄｂｙＡｚｏｏｓｐｅｒｍｉａｏｒＯｌｉｇｏｓｐｅｒｍｉａ￥ＷｕＭｅｉｈｅｎｇ；ＴａｎｇＷｉｎｇｎｕｏ．（ＡＣＴＡＡＣＡＤＥＭＩＡＥＭＥＤＩＣＩＮＡＥＮＡＮＪＩＮＧ，１９９５（...     

THE EFFECT OF RADIX SALVIAE MILTIORRHIZAE COMPOSITA ON PEROXIDATION OF LOW DENSITY LIPOPROTEIN DUE TO COPPER DICHLORIDE

It is well known that plasma lipoprotein, particularly oxidized LDL, plays an important rolein the pathogenesis of atherosclerosis and atherosclerotic diseases. We used oxidized LDLgenerated by incubating LDL from healthy Persons with copper dichloride as a model to in-vestigate the antioxidate property of Radix Salviae Miltiorrhizae Composita (RSMC). Onphotos, the spot X1 and the spot X2 were clearly found in the control group after the dislysisinto copper dichloride for 24 and 48 hours, but they could not found in the RSMC group.The analysis of the constituents of lipids in LDL (by charring method) showed that afterdislysis the percentages of the spot X1 and the spot X2 in the RSMC group weresignificantly lower tban those in the control group (P< 0.01). The results suggest thatRSMC plays a potential role in antioxidation of lipuls or LDL.     

The Effects of Astragalus membranaceus and Tripterygium hypoglaucum on NK Activity in Systemic Lupus Erythematosus

ＴｈｅＥｆｆｅｃｔｓｏｆＡｓｔｒａｇａｌｕｓｍｅｍｂｒａｎａｃｅｕｓａｎｄＴｒｉｐｔｅｒｙｇｉｕｍｈｙｐｏｇｌａｕｃｕｍｏｎＮＫＡｃｔｉｖｉｔｙｉｎＳｙｓｔｅｍｉｃＬｕｐｕｓＥｒｙｔｈｅｍａｔｏｓｕｓＺｈａｏＸｉａｏ－ｚｈｏｎｇ（赵小忠）（Ｄｅｐａｒ...     

球囊栓塞术治疗创伤性CCF62例临床分析

创伤性颈内动脉海绵窦瘘(CCF)是颅脑外伤的严重并发症之一,近几年随着导管技术的不断成熟,可脱球囊栓塞技术使CCF的治疗成为可能,其方法简单、操作容易、创伤及危险性小,但术后的并发症需引起重视[1],特别是术后复发的问题。本文就南京军区总院1990年1月至2003年7月收治的62例CCF患者行可脱球囊栓塞治疗及并发症和术后复发问题进行回顾性分析。1资料与方法1.1临床资料创伤性CCF患者62例,男50例、女12例;年龄17~70岁,病史0.5~10年;1个瘘口59例、2个瘘口3例;临床表现为搏动性突眼、球结膜及睑结膜水肿或外翻61例,单纯突眼3例,外展障碍及…