Buprenorphine transdermal patches as preemptive analgesia / 中国组织工程研究

BACKGROUND:Buprenorphine transdermal patches have the characteristics of stable blood concentration, long duration of analgesia, respiratory depression and less side effects, which have been widely used in the treatment of moderate to severe chronic pain. OBJECTIVE:To observe the clinical outcome of preoperative analgesia by buprenorphine transdermal patches for pain management after posterior lumbar surgery. METHODS: Eighty patients scheduled for posterior lumbar decompression and interbody fusion under general anesthesia were enroled, 45 males and 35 females, aged 42-71 years, who were randomly divided into two groups, 40 cases in each group: experimental group and control group. In the experimental group, buprenorphine transdermal patches were given 2 days prior to the internal fixation, and intravenous injection of parecoxib was given for postoperative pain management. In the control group, placebo patches were given prior to the internal fixation, and self-control vein analgesia pump and intravenous injection of parecoxib were given for postoperative pain management. Visual analog scale scores were recorded at 6, 12, 24, 48 hours after surgery as wel as doses of tramadol hydrochloride and pethidine hydrochloride used postoperatively and side effects. The patient's satisfaction, drainage and blood count, erythrocyte sedimentation rate, C-reactive protein level at 48 hours postoperatively were detected and recorded in the two groups. RESULTS AND CONCLUSION:There was no significant difference between these two groups in visual analog scale scores, dosage of tramadol hydrochloride and pethidine hydrochloride used postoperatively, postoperative drainage amount, leukocyte count, erythrocyte sedimentation rate and C-reactive protein level (P > 0.05). Postoperative incidence of nausea, vomiting and delirium was lower in the experimental group than the control group (P < 0.05), but the patient's satisfaction in the experimental group was better than that in the control group (P< 0.05). These findings indicate that buprenorphine transdermal patches have better preemptive analgesia for posterior lumbar surgery, with less adverse effects and better patient's satisfaction.

Clinical therapeutic effects of AO/ASIF clavicle hook plate on distal clavicle fractures andacromioclavicular joint dislocations

The aim of this study was to evaluate the security and effectiveness of AO/ASIF clavicle hook plate in the treatment of distal clavicle fractures and acromioclavicular joint dislocations. One hundred patients with distal clavicle fractures and acromioclavicular joint dislocations who were admitted in our hospital from January 2012 to January 2013 were selected as the study subjects. They were then randomly divided into a control group and an observation group [n=50]. The observation group was treated with AO/ASIF clavicle hook plates, and the control group was treated with Kirschner-wire tension bands. The outcomes were recorded and compared. The JOA scores of the two groups were similar before surgery [P > 0.05]. The two groups both had obviously increased JOA scores in the postoperative 6th and 12th weeks, and the score in the postoperative 12th week was higher. There were statistically significant intra-group differences [P < 0.05]. The postoperative 6th-week and 12th-week JOA scores of the observation group were [83.2 +/- 1.8] and [97.4 +/- 1.5] respectively, and those of the control group were [71.6 +/- 2.2] and [82.3 +/- 2.6] respectively, with statistically significant inter-group differences [P < 0.05]. Significantly more patients in the observation group [100%] were evaluated as excellent or good outcomes after fixation than those in the control group [60%]. After removal of the surgical apparatus, the recurrence rates of bone fracture and joint dislocation in the observation group were significantly lower than those of the control group [P < 0.05]. AO/ASIF clavicle hook plate functioned more effectively than Kirschner-wire tension band in clinical treatment of distal clavicle fractures and acromioclavicular joint dislocations. The former protocol enjoyed small incisions, firm fixation and early shoulder mobility. Therefore, it is a safe and effective surgical method that is worthy of being widely applied in clinical practice

Phylogenetic characterization of genes encoding for glycoprotein 5 and membrane protein of PRRSV isolate HH08

A porcine reproductive and respiratory syndrome virus (PRRSV) was obtained from clinic samples. Genes 5 and 6 encoding for the viral glycoprotein 5 and a membrane protein of the PRRSV designated as HH08 were amplified by reverse transcription-PCR. These sequences were compared with reference sequences derived from different geographical locations. The results indicated that the virus belongs to the North American type rather than European. Comparative analyses of the genetic diversity between the PRRSV isolate HH08 and other Chinese as well as foreign reference strains of PRRSV were discussed based on the sequence comparison and the topology of phylogenetic trees constructed in this study.

NO mixture promotes wound healing of diabetes mellitus mice / 第三军医大学学报

Objective To investigate the influence of NO mixture(L-arginine,apocynin and sodium nitroferricyanide) on wound healing of diabetes mellitus(DM) mice.Methods Fifty adult male Kunming mice were induced by streptozotocin to establish type I DM model.They were then randomly divided into control group,L-arginine group(150 g/L),apocynin group(1?10-4 mol/L),sodium nitroferricyanide group(0.1 mmol/L) and NO mixture group(above components were mixed with equal ratio).Full-thickness skin wound was made and injected with corresponding drugs of 0.15 ml once every 2 days.The wounds were digitally photographed to calculate the percentage of wound closure using computer image analysis software in 1,3,5,7 and 10 d post-injury.The density of fibroblasts,the content of collagenous fibers and the neovascularization in the wound samples were measured with the aid of HE staining.Results From the third day post-injury,the wound healing rate of NO mixture group was significantly higher than that of all the other groups(P