Objective To observe effect of large blood vessel hypoxia on the Wister rat′s NO activity. Methods Thoracic aorta rings model with full endothelium and removed endothelium of Wistar rat were prepared , hypoxia stimulated aorta rings and noted changes of constriction extent. Results Endothelium full , removed endothelium aorta rings by hypoxia contract extent difference was 598?42mg and 208?38mg, both had significance discrepancy (P0.05), and NTG made blood vessel contract to reduce range, reach 57.21% (P

Objective To study the technique and clincal value of biopsy during percutaneous vertebroplasty for the diagnosis of spine lesions.Methods From January 2003 to November 2005,94 patients that had been diagnosed with spinal tumors were admitted to our hospital.In these cases,totally 120 vertebrae were involved,including 3 cervical vertebrae,41 thoracic pieces,72 lumbar segments,and 4 vertebrae.Among the vertebrae,lyric lesions were found in 91,blastic in 9,and mixed in 20.Before operation,primary lesion of the spinal metastatic tumor had been confirmed in 76 patients (87 vertebrae).All the cases received percutaneous vertebroplasty,and biopsy was perfromed during the surgery.The positive rate of the pathological diagnosis was then analyzed.Results The percutaneous vertebroplasty and biopsy were completed in all the cases with a success rate of 100%.Of the 120 vertebrae,the primary diagnosis was confirmed in 114 (positive rate 95.0%),and the positive rate for metastasis cases were 93.1% (81/87).No injuries to the nerve and vessels were found in this series,no patient developeed hematoma or infection after the operation.A mean of 36.4-month follow-up was achieved in 80 patients (range,4 to 68 months),during this period,no tumor cells spreaded along needle tract or implanted into the skin.Conclusions Biopsy during percutaneous vertebroplasty can not only shorten treatment time and save medical cost,but also increase the safty of the surgical treatment as well as the aecruracy of pathological exmaination.

The molecular imaging technology is a kind of imaging technology which displays the microstructure of tissue,cell and sub cellular level in vivo.It has the characteristics of real time,noninvasive,accurate and sensitive,and can be used for early screening and diagnosis of tumor at the cellular and molecular level.Following the development of bioluminescence and fluorescence imaging,optical molecular imaging technology is making rapidly progression.The application of optical molecular imaging technology in cancer was reviewed in the paper.

Objective To determinate Berberine chloride in compound Wuzhigan capsules and develop a steady and reliable method for the quality control of the capsules.Methods A HPLC method was adopted.The column was Diamonsil C18 (250 mm?4.6 mm,5 ?m) with the column temperature of 30 ℃,the mobile phase was acetonitrile-0.033 mol/L potassium dihydrogen phosphate (30∶70) with the flow rate of 1.0 mL/min,and the detection wavelength was at 347 nm.Results Berberine chloride has a linearity in the range of 2.52～12.6 ?g/mL,and the average content in the capsules was 1.686 mg/capsules.Conclusion This method is sample,accurate,and can be used for the quality control of compound Wuzhigan capsules.

Cerebrospinal Fluid Rhinorrhea ; surgery ; Endoscopy ; Humans

Objective To evaluate the gene amplification and protein expression of HER-2 in gastric carcinoma with or without neuroendocrine differentiation (NED), and to explore the difference in HER-2 gene profile between these two neo?plasms. Methods Cases of gastric carcinoma with NED (n=70) and cases of gastric carcinoma without NED (n=150) were retrospectively reviewed. Gene amplification and protein expression of HER-2 genes in gastric carcinoma with or without NED were detected by combination of immunohistochemical method (IHC) and double color silver dye for in situ hybridiza?tion (DISH). Prognosis of gastric cancer patients with NED were predicted using Kaplan-Meiers survival analysis. Results Expression rates of HER-2 in gastric cancer with and without NED are 20.00%and 21.33%respectively. Amplification of HER-2 in gastric cancer with and without NED are 8.57%and 14.67%respectively. Gene amplification and protein expres?sion of HER-2 between gastric cancer with NED and without NED showed no statistical difference. Chromosome 17 multi-body positively correlated with gene HER-2 amplification in Gastric carcinoma with NED. Postoperative survival period in patients of gastric carcinoma with NED and HER-2 amplification was shorter than that in patients of gastric carcinoma with?out NED but with HER-2 amplification. Gastric carcinoma with or without NED, HER-2 gene amplification, lymph node me?tastasis and operation method obviously correlate with prognosis of gastric carcinoma patients (P<0.05). Conclusion The gastric cancer with NED is a special type of gastric cancer, there was no difference of gene amplification and protein expres?sion of HER-2 gene between gastric carcinoma with NED and without NED. Poor prognosis would be expected in gastric can?cer patients with NED and HER-2 amplification.

Objective To evaluate the value of spiral CT in analyzing correlation of growth pattern with pathology and prognosis in gastric stromal tumor(GST).Methods CT findings and pathological data including immunohistochemical staining sections of 43 patients with GST were reviewed and all patients were followed.The correlation between growth pattern,pathology and prognosis was studied.Results Of the 43 GST,there were benign in 9 and malignant in 34.the benign or malignant GST closely correlated with the growth pattern.Of the 17 intra-and extra-luminal growth patients,16 cases were malignant and 5 cases recurred in 3 years.Conclusion The GSTs that appear intra-and extra-luminal gowth hint the poor prognosis.

Objective To evaluate the effect of behavioral intervention on changing knowledge, attitude and practice (KAP) about AIDS among the migrant workers in railway construction sites. Methods Health education and behavioral intervention on AIDS were carried out among the migrant workers for 4 to 5 months, who were clusteredly sampled from two railway construction sites, in the forms of mini-media, peer education and so on. Questionnaire survey was conducted among them before and after the intervention. Results The results showed that the knowledge awareness of the migrant workers on the transmission routes, preventions of AIDS and self-protection consciousness increased significantly by comparing the indexes of 943 pre-intervention with those of 671 post-intervention workers. After intervention procedures, the rate of those workers who would adopt negative attitudes towards the HIV infected persons because of fear and discrimination was decreased from 9.8% and 10.5% to 6.3% and 3.5% (both P

Tryptanthrin is a kind of indole quinazoline alkaloid.In this review,recently reported research progresses of tryptanthrin on extraction,systhesis and pharmalogical action have been mainly summarized.The effect of tryptanthrin on antimicrobial,antiinflammatory and antitumor activities has been found,showing its good application and development perspective.

Objective To analyze the radiologic features of intestinal duplications in children and improve the diagnostic rate of this disease presurgical resection.Methods The clinical presentation and imaging data of eight cases confirmed surgically and patho-logically with intestinal duplications were retrospectively analyzed,as well as reviewed based on literature review.Results 8 cases were given ultrasonography,7 of them had positive performance.7 csaes were given CT scan and 6 of them had positive performance. 6 cases had ECT examination and 4 of them were positive.Their positive rates were 87.5%,85.7%,66.7% respectively.The posi-tive rates were all 100% combining ultrasonography with CT or CT with ECT.Conclusion Ultrasonography,CT and ECT is helpful to diagnose of intestinal duplications in children,their results are the no-specificity.Choosing a suitable imaging examination is useful to offer a pre-operative diagnosis.