AIM: To establish a method for determing GC fingerprint of the chemical constituents in Bulbus lilii. METHODS: GC/MS were used to optimize the fingerprint determination, and to identify the main peaks in the GC fingerprint. RESULTS: A preferable determination for GC fingerprint of the chemical constituents in Bulbus lilii.was established. CONCLUSION: A general acquaintance of the chemical constituents in Bulbus lilii.can be obtained by using the preferable GC fingerprint determination method,which is useful for quality evaluation of the crud drug of Bulbus lilii.

Objective To investigate the effects of dexmedetomidine (DEX) on oxidative stress and inflammatory cytokines caused by tourniquet-induced ischemia-reperfusion injury at limbs.Methods Eighty patients who had been scheduled for lower limb operation with tourniquet were assigned equally by sequence number to use or not use DEX (DEX or control group,n =40).Combined spinal-epidural anesthesia was performed in both groups.In the DEX group,DEX intravenous infusion was started immediately after the femoral vein cannulated at a dose of 1 μg/kg for 10 minutes,followed by 0.5 μg/kg · h until the end of operation,whereas the control group received an equivalent volume of 0.9％ saline.At 10 min before tourniquet inflation (T1),10 min (T2),30 min (T3) and 60 min (T4) after tourniquet release,femoral venous blood samples were obtained to measure heart rate (HR),mean arterial pressure (MAP),saturation of pulse oximetry (SPO2),serum malondialdehyde (MDA),serum superoxide dismutase (SOD),serum tumor necrosis factor-α (TNF-α) and interleukin-8 (IL-8) levels in both groups.Results There were no significant differences in HR,MAP or SPO2 at all time points between the 2 groups (P ＞ 0.05).There were no significant differences in HR,MAP or SPO2 at all time points within either group (P ＞ 0.05).There were no significant differences in serum MDA,SOD,TNF-α and IL-8 levels at T1 between the 2 groups (P＞ 0.05).The serum MDA,TNF-α and IL-8 levels were significantly lower and the serum SOD level significantly higher in the DEX group than in the control group at T2,T3 and T4,respectively (P ＜0.05).In both groups,the serum MDA,TNF-α and IL-8 levels were significantly higher and the serum SOD level significantly lower at T2,T3 and T4 than at T1,respectively (P ＜ 0.05).Conclusion Dexmedetomidine can reduce the oxidative stress and inflammatory cytokine level which are caused by tourniquet-induced ischemia-reperfusion injury.

Objective To establish an allogenic intraocular melanoma model and observe its pathological features. Methods Thirty-six kunming mice were devided randomly into 3 groups with 12 ones in each, and allogeneic melanoma cells B16F10(C57BL16) were inoculated into the anterior chamber (AC), vitreous cavity (VC) of right eyes and under the skin (subcutaneous, SC) of the back of right feet of each grup respectively. The incidence of tumor occurance, time of breaking through the eyeball and other general pathologic features of the tumor were observed by slip-lamp biomicroscopy and operating microscopy for continuous 32 days, and the results were statistically analyzed. Pathological examination was given for tumors at last. Results The incidence of tumor occurance in both AC (12/12 eyes) and VC group (11/11 eyes) was higher than that in SC group (2/12 feet)( ? 2 =17.143, P =0.000; ? 2 =16.218, P =0.000) . The time of eyeball diabrosis was 11-13 days in AC group and 13-32 days in VC group, and there was significant difference between these two groups (Log Rank=18.22, P =0.000). The intraocular melanomas could grow progressively, but reduced and fell off when they broke through eyeball and grew in orbit for a period. The average diameter of the tumor after 32 days after inoculation was (2.27?1.97) mm in AC group,(3.82?1.85) mm in VC group and (0.94?2.27) mm in SC group. There was significant difference between VC and SC group ( t =3.322, P =0.003). In pathohistological examination, tumor tissue necrosis could be observed at the center of the subcutaneous melanomas but not in intraocular melanomas. Conclusions Allogeneic intraocular melanoma model is successfully established which is convenient, repeatable, and helpful to studying the mechanism of genesis and development of this tumor.

Objective:To discuss the relationship between defunctionign stoma in low anterior resection for rectal carcinoma and the incidence of anastomotic leakage.Methods:Totally 270 patients who received low anterior resection for rectal carcinoma(with the distance between anastomosis and anal edge being 6 cm or less)from Jan.2005 to Oct.2006 were included in the present study.Defunctioning stoma was performed in 113(41.9%)patients considered with high risk of anastomotic leakage.The clinicopathological data were used to construct database.SPSS 10.0 software was used to analyze the incidences of anastomosis leakage in patients with and without receiving defunctioning stoma.Results:There were 20(7.4%)leakages in the 270 cases.The symptoms included abdominal pain(37%),increase of pulse(53%),fever(47%),leukocytosis(53%),pelvic fluid properties change(68%),anal discharge of bloody fluid(26%)and others(10%).The average age of patients with leakage was 57.8 years.No death was caused by anastomotic leakage.Four(3.5%)leakages happened in defunctioning stoma group,and 16(10.2%)leakages happened in non-stoma group(P=0.04).Eighteen(75%)of the 24 patients with preoperative radiotherapy history received defunctioning stoma and none of them had leakage.Two of the 6 cases who had preoperative radiotherapy history receiving no defunctioning stoma had anastomotic leakages;the fisher exact probability test showed P=0.054.The leakage rate was 4.9%(7 cases)in 142 cases who had received protective measures during low anterior resection and the rate was 10.2%(13 cases)in the rest 128 cases who had not received any protective measures(P=0.10).Leakages subsided with conservative treatment in the 4 patients with stoma,but 8 patients without stoma had severe symptoms and required surgical intervention;one developed peritonitis.The average fasting periods were significantly different between the 2 groups(P

AIM: To compare the difference between medicinal and edible lilium brownii. METHODS: GC method was used for the determination of stigmasterol (the reference standard) in medicinal and edible Lilium brownii. And pharmacology experiment on stigmasterol was carried out. RESULTS: Stigmasterol had the antiinflammatory and anti-coughing effect. It represented the main effect of Lilium brownii. It was reasonable to be the reference standard. There were obvious differences in the stigmasterol content of medicinal and edible Lilium brownii. The stigmasterol content of medicinal Lilium brownii was much higher than that of the edible. CONCLUSION: Edible Lilium brownii can not be applied to clinical.

Objective To assess the reliability of strength of shoulder rotator cuff using a hand-held dynamometer among subjects with spinal cord injury. Methods 20 spinal cord injury subjects without shoulder pain participated in this study. A hand-held dynamometer was used to assess the strength of shoulder rotator cuff. Two therapists (A/B) obtained the strength of shoulder rotator cuff. One of the therapists assessed again 5days later. The intra- and inter-reliability (ICC) of strength of shoulder rotator was calculated. Results The strength of rotator cuff was assessed by the hand-held dynamometer. The intra-reliability of external and internal muscle strength was 0.94 and 0.95, respectively. The inter-reliability was 0.91 and 0.93, respectively. Conclusion A hand-held dynamometer is a feasible and reliable tool to assess the strength of rotator cuff among subjects with spinal cord injury.

Objective To evaluate the application of small dural window exposure strategy for removal of subdu-ral hematomas and decompressive craniectomy in patients with severe brain injury. Methods Eighty patients with an ad-mission Glasgow Coma Scale score of 8 or less were randomly divided into two groups:Routine craniectomy group (42 pa-tients) and small dural window exposure strategy group (38 patients). The clinical outcomes were compared between these two groups. Results The average quantity of blood transfusion (erythrocyte suspension)at 24 h was 2.85 ± 1.98 and 1.43±1.40 unit in the routine craniectomy group and small dural window exposure strategy group, respectively. The num-bers of the delayed intracranial hematomas, traumatic epileptic seizure as well as acute encephalomyelocele were 10, 12 as well as 9 in the routine craniectomy group and 2, 3 as well as 1 in the small dural window exposure strategy group. However, the time of operate duration and the incidence of cerebral infaction were not significantly different between two groups (P>0.05). After 6-month follow-up, there were 16 cases with favorable outcomes including 10 with good recov-ery and 6 with mild disability and 26 cases with unfavorable outcomes, including 7 with severe deficits, 6 with persistent vegetative status and 13 dead in the routine craniectomy group. In contrast, there were 23 cases with favorable outcomes including 12 good recovery and 11 mild disability and 15 cases with unfavorable outcome including 6 with severe deficits, 4 with persistent vegetative status and 5 dead in the small dural window exposure strategy (P﹤0.05). Conclusion small dural window exposure strategy is an excellent technique for the complete evacuation of the traumatic intracranial hemato-ma, especially those with massive intraoperative swelling .

Objective To explore and evaluate the application value of damage control theory in bilateral craniotomy operation of severe craniocerebral trauma.Methods Seventy patients with Glasgow coma scale score ≤ 5 scores were divided into 2 groups by random digits table method with 35 cases each:standard trauma craniotomy group (normal group),non-standard craniotomy and small dural window exposure strategy group (improved group).The clinical data were compared.Results There was no significant difference in postoperative cerebral tissue bone window embedded meal,large area cerebral infarction incidence rate between two groups (P ＞ 0.05).There was significant difference in the duration of surgery,blood transfusion amount within 24 hours,traumatic epileptic seizure within 1 month,the acute intraoperative encephalocele between normal group and improved group [(2.80 ± 0.63) h vs.(4.21 ± 1.04) h,(3.90 ± 1.02) U vs.(5.55 ± 1.32)U,14.3％(5/35) vs.48.6％(17/35),5.7％(2/35) vs.25.7％(9/35)] (P ＜0.05).Followed up for 6 months,good prognosis,moderate disability,severe disability,vegetative state,death was 4,4,8,6,13 cases in normal group and 8,9,5,4,9 cases in improved group,and there was significant difference (x2 =5.040,P =0.025).Conclusion Severe craniocerebral trauma bilateral craniotomy damage is bigger,damage control theory to guide the improved operation method,can improve the rescue efficiency.

Objective To study the phase transformations and chemical composition changes of Pyritum Preparata (PP) influenced by different processing. Methods To analyse the changes of microstructure, morphology, mineral phase, and chemical compositions in different PP by ore microscope, electron probe microanalyzer technique. Results Greater changes have taken place in chemical compositions of PP after calcination: pyrite (FeS_2) changed into pyrrhotite (Fe_(1-x)S), even changed into magnetite (Fe_3O_4); and chalcopyrite generated mutation to be low-copper chalcopyrite, the contents of Cu reduced, the rate of Cu/Fe changed. At the same time, in the pyrrhotite around the mutative chalcopyrite, the contents of Cu increased. That is to say, the Cu got into pyrrhotite and generated solid-solution with high dispersion, and then ore became loose and porous. In the hard-burned spot of calcined quenched samples by vinegar, the contents of Pb and S are far lower than non-burned spot, the minimum estimate of Pb is less than 1/10 of crude ore. Conclusion There is a co-relativity between phase transformations and dissolution of chemical compositions before and after calcining PP.

Objective To observe the influence of storage time and condition on the chemical components in the volatile oil of Fructus Evodia by GC-MS.Methods The volatile oil was extracted from Fructus Evodia by steam distillation and the amount of each components in the volatile oil was determined by area normalization method and the components were identified by GC-MS.Results One hundred and sixteen components were separated and identified,which accounted for more than 90% in the total constitutes of the volatile oil.The content of volatile oil in Fructus Evodia was influenced by the storage time and condition.Conclusions The method is reliable and has a good repeatability,and can be applied to analyze volatile components in Fructus Evodia.This will provide a certain scientific basis for the storage and clinical application of Fructus Evodia.