Drug Delivery Systems ; Gastrointestinal Stromal Tumors ; drug therapy ; genetics ; Humans ; Proto-Oncogene Proteins c-kit ; genetics ; Proto-Oncogenes ; drug effects ; Pyrimidines ; pharmacology ; therapeutic use ; Receptor, Platelet-Derived Growth Factor alpha ; genetics ; Statistics as Topic

Objective To investigate the major risk factors of posterior circulation infarction.Methods Clinical data from 216 patients with posterior circulation infarction were analyzed retrospectively. The patients were divided into follow groups (proxima1,middle, dista1 and combination group,or single , multiple, or unilateral, bilateral, or lacune infarct, non lacune infarct ) according to the infarcts locations on MRI.The risk factors in each group were analysed. Also,the major risk factors were compared with that from patients with anterior circulation infarction. Results In 216 patients with posterior circulation infarction, hypertension was the most common risk factor (76.9%), followed by diabetes mellitus (36.6% ),hyperlipedemia (30.1%), previous stroke history(26%), and heart disease(22.2%). The most common location of infarcts was distal territory (49%),followed by middle(24.5%) ,proxima1(6%). The average age of proximal group [(57.92?12.81) years] was significant lower than that of other groups(P

Objective To compare the effect of electroacupuncture at head points and body points on glucose metabolism of the cerebral motor function regions in normal subjects.Methods To observe the change of glucose metabolism of cerebral motor area in normal subjects between before and after acupuncture during the movement by PET.Talairach coordinates(Atlas of brain) and statistical parametric mapping(SPM) software were used to deal with the acquired imaging data.Results ① Acupuncture at Baihui(GV20) and left Qubin(GB7) could increase metabolism of glucose in bilateral Lps and precuneus,the activation of left area in the brain being more significant.②Acupuncture at right Quchi(LI11) and Zusanli(ST36) change metabolism of glucose in left gyrus precentralis,right loblus paracentralis,right gyrus frontalis medialis,both cerebellums and both putarnens.Conclusion All acupoints can change glucose metabolism in cerebral structures related to motor function in the bilateral cerebral hemispheres,different acupoints active different motor areas.The function of acupuncture is a kind of comprehensive regulative process.

AIM:To observe the efficacy and safety of ropivacaine supplemented with midazolam for sacral block in pediatric operation.METHODS:40 cases of patients aged 1-6 years old,who were going to be operated in hypogastrium,perineum and lower limb,were randomly and double-blindly divided into four groups with ten cases each:control group(bupivacaine 2.5 mg/kg),low dosage group(ropivacaine 2.5 mg/kg),middle dosage group(ropivacaine 3.5 mg/kg)and high dosage group(ropivacaine 5.0 mg/kg).Sacral block was performed after induction of inhalation anaesthesia with sevoflurane.Sedation was induced by midazolam(0.2 mg/kg)administered through mainline 5 min before the surgical procedure.RESULTS:In a certain dosage range,ropivacaine supplemented with midazolam anesthesia for sacral block showed a slight influence on diastolic blood pressure,mean arterial pressure,heart rate and pulse oxygen saturation.Those parameters remained in the physiological normal range,though they dropped slightly during the operative period.Compared with bupivacaine group,the postoperative analgesic period was similar in the high and middle ropivacaine groups,while it was shorter in low ropivacaine group.There was no significant adverse effect in all groups except for operative stretch reflex and postoperative vomiting in individual patients.CONCLUSION:Ropivacaine supplemented with midazolam anesthesia for sacral block has a slight influence on hemodynamics,prolongs the postoperative analgesic period,and shows less adverse effect.

0.05) except during the 24 th hour postoperative period.During the 0.5 h postoperative period,the average total amount of injections of morphine was statistically lower in the ropivacaine group(control 15.8?23.9 ?g/kg versus ropivacaine 2.4?10.9 ?g/kg;P

OBJECTIVE:To optimize the extraction and purification technology of resveratrol from Polygonum cuspidatum. METHODS:By alkali extraction and acid precipitation,an orthogonal experiment was conducted to optimize the extraction and purification technology taking the ratio of the CaO to the raw material,the ratio of solid material to the extraction solvent,the kinds of acid and the extraction time as factors and the weighted mean of the content and yield as comprehensive score index.RESULTS:The optimal extraction and purification technology was as follows:the ratio of CaO to the solid material was 9:100;the ratio of solid material to solvent was 1:8;the acid was hydrochloric acid and the extraction time was 45 min.CONCLUSION:The optimized extraction and purification technology of resveratrol from Polygonum cuspidatum is characterized by energy source - saving and simple in operation,and it is suitable for industrial production.

Objective To explore the changes of urinary deoxypyridinoline and its clinical significance in bedridden fracture-patients with long-term treatment. Methods Thirty-seven bedridden fracture-patients with long-term treatment(22 males and 15 females) and thirty healthy subjects(15 males and 15 females) were selected for analyzing the levels of serum calcium(Ca), phosphate(P), total serum alkaline phosphatase(AKP),urinary calcium/creatinine ratio(Ca/Cr) and urinary deoxypyridinoline(DPD). Results The concentration of serum calcium and phosphate in the patients was significantly lower than that in the healthy subjects (P

BACKGROUND: Preparing the tracheal prosthesis by biomaterials is crucial for studying the implant of long tracheal defect.The biocompatibility and biodegradability of collagen/hydroxyapatite (Col/HAp) and poly(lactic-co-glycolic acid) (PLGA) in vivo, as a artificial material for tracheal prosthesis, need to be observed.OBJECTIVE: To explore in vivo biodegradability of Col/HAp and PLGA of tracheal prosthesis in rats.DESIGN: Randomized controlling observation.SETTING: Department of Thoracic and Cardiovascular Surgery, Clinical College of Yangzhou University; Department of Thoracic and Cardiovascular Surgery, Changzheng Hospital of the Second Military Medical University of Chinese PLA.MATERIALS: The experiment was carried out in the National Experimental Animal Center of the Second Military Medical University of Chinese PLA from March 2003 to December 2004. Sixteen SD rats of either gender were offered by this center, aged three months and weighed 150-170 g. Col/HAp and PLGA (the copolymer of polylactic acid and polyglycolic acid according to the percent of 90:10) were self-made.METHODS: ①Empirical process: Rats were fed adaptively for 1 week and anesthetized. Then undermining dissection was performed along with musculi dorsal surface toward spine bilaterally, so as to form two capsular gaps, which were implanted with Col/HAp sponge and PLGA fiber mesh cloth respectively, in a size of 10 mm ×10 mm. ②Empirical evaluation: The postoperative activity, incision healing and rejection of rats were observed; 2, 4, 6, 8 weeks postoperatively, the Col/HAp sponge and PLGA mat that were embedded subcutaneously as well as surrounding tissues were determined using scanning electron microscope or transmission electron microscope.MAIN OUTCOME MEASURES: In vivo biodegradability of two materials implanted in rats at different time points.RESULTS: ①All the animals could carry out normal activity, respiration and diet; no incision infection, fluidity, necrosis or sinus tract appeared; there was no edema in the skins of implanted area, neither hypersensitiveness nor toxicity was found; the implant materials had no rejection. ②The features of the implanted materials varied throughout the implantation. During the follow-up, the infiltration of inflammatory cells was found in the interface between the implants and neighboring host tissues in the early stage, phagocytes and fibroblastic cells were also observed later. As the process went on, the materials were biodegraded gradually, encapsulated by phagocytes, and replaced by newly generated fibrous tissues. No remarkable harmful influences of the composite materials on the neighboring host tissues such as apomorphosis, necrosis, hyperplasia and foreign body reaction were observed grossly and microscopically.CONCLUSION: All the implants show a good biocompatibility and biodegradability. Both Col/HAp and PLGA go through a gradual process of biodegradability, biological absorption and replacement by host tissues ultimately in vivo, which suggest that these two kinds of composite biomaterials will be used safely in developing tracheal prosthesis.

In order to study the treatment of the children with attention deficit hyperactivity disorder (ADHD), the integrated visual and auditory continuous performance test (IVA-CPT) was clinically applied to evaluate the effectiveness of electroencephalogram (EEG) biofeedback training. Of all the 60 children with ADHD aged more than 6 years, the effective rate of EEG biofeedback training was 91.6% after 40 sessions of EEG biofeedback training. Before and after treatment by EEG biofeedback training, the overall indexes of IVA were significantly improved among predominately inattentive, hyperactive, and combined subtype of children with ADHD (P<0.001). It was suggested that EEG biofeedback training was an effective and vital treatment on children with ADHD.
Attention Deficit Disorder with Hyperactivity/physiopathology ; Attention Deficit Disorder with Hyperactivity/*therapy ; Biofeedback (Psychology) ; Brain/*physiopathology ; Electroencephalography

To establish a better method of primary culture for alveolar epithelial type II cells (AEC II) and to study its bionomics, alveolar epithelial type II cells were isolated by digestion with trypsin and collagenase, which were then purified by plated into culture flask coated with rat immunoglobulin G. The purified AEC II were identified by alkaline phosphatase staining, electron microscopy, immunocytochemical staining of pulmonary surfactant protein A (SPA). The SPA expression and transfection characteristics were compared with those of A549 cell line. The results showed that AEC II could be isolated by digestion with trysin and collagenase and purified by adhesive purification by using IgG, with a yield of about 2-3 x 10(7), and a purity of about 75%-84%. Cells could be quickly identified with AKP staining. AEC II were different from A549 cell line in terms of SPA expression and transfection characteristics. It is concluded that adhesive purification with IgG can improve the purity of AEC II, and AKP staining is simple in cell identification. AEC II can not be completely replaced by A549 cells in some studies because the differences between them, such as SPA expression.
Cell Culture Techniques/*methods ; Cell Separation/*methods ; Cells, Cultured ; Ecology ; Epithelial Cells/*cytology ; Immunoglobulin G/pharmacology ; Pulmonary Alveoli/*cytology ; Pulmonary Surfactant-Associated Protein A/biosynthesis ; Rats, Wistar