At present, most of patients diagnosed as gastric cancer with clinical therapy belong to ad- vanced stage in China; The patients in early stage are relatively few. While patients in advanced stage have poor prognosis in general and low rate of curative resection. Neoadjuvant chemotherapy for advanced gastric cancer can obtain downstaging, increase rate of curative resections, and has the possibility of improving sur- vival. Neoadjuvant chemotherapy might be an effective and feasible therapeutic method for advanced gastric cancer.

MTA1 is a composition of Nurd,which may deacetylate histone and non-histone to affect gene transcription and protein expression. Since it is often overexpressed in many tumors and closely related to invasion,metastasis and prognosis of the malignancy, MTA1 might be exploited as a tumor marker for clinical application. This article reviews the structure and function of MTA1 and some new research progress on the tumor metastasis related to MTA1.

SELDI-TOF-MS is a novel proteomic technique.It reveals some new biomarkers which could be used for early diagnosis,preoperative staging and predicting response to radiochemotherapy of colorectal cancer.These new biomarkers were validated to be more sensitive and specific than traditional hiomarkers.SELDI-TOF-MS will be a useful tool for early diagnosis and tailor-made therapy of eolorectal cancer.

Objective To observe the influences of ether soaking method, solven t refluxing method and steam distilling method on the content and chemical compo nents of volatile oil from Lignum Santali. Methods Gas chromatograph_mass sp ectrogram (GC_MS) analysis was adopted. Results The content of santalol in t he oi l from Lignum Santali extracted by ether soaking was a little higher than that i n the volatile oil extracted by steam distilling, and their chemical components are similar. The total content of volatile oil extracted by solvent refluxing me thod was 3.35%, much higher than that by steam distilling metho d. GC_MS analysis showed the content of santalol and other chemical components a re similar by the two methods. Conclusion Ether soaking method can be used f or the qualitative analysis of volatile oil from Lignum Santali. Extraction of s antalum oil by steam distilling method is incomplete.

Objective To summarize the experience of the use of drainage after radical resection for rectal carcinoma.Methods 87 cases of patients who underwent radical resection for rectal carcinoma from May 1996 to May 2000 were reviwed retrospectively.Results Among 40 cases who underwent abdominoperineal resection(APR),perineal wounds were healed at one stage in 37 case,perineal wound infections occurred in 3 case,bleeding in one case and bowel obstruction in one case.among the other 47 cases who underwent low anterior resection(LAR),intrapelvic infection occurred in one case,anastomosis leakage occurred in one case.Conclusions The use of drainage after radical resection for rectal carcinoma is a very important method to reduce the occurrence of local complications.

Objective: To determinate the content of isoimperatorin in Exocarpium citri grandis from 10 various species and origins. Methods: The isoimperatorin was determinated at 305nm by TLC Scanning. Results: The content of isoimperatorin in Exocarpium citri grandis was very low, and the law of distribution could not be found. Conclusion: Although the content of isoimperatorin in Exocarpium citri grandis was very low, the method is very sensitive and simple and the result is accurate.

Object To establish the HPLC fingerprint of flavonoids in Exocarpium Citri Grandis (ECG) Methods HPLC fingerprint of ten samples were established. The naringin was used as standard. The relative migration time and the percentage of peak area were used as parameters Results More than 30 peaks occurred on the HPLC fingerprint of flavonoids of ECG. The fingerprints of C. grandis ‘Tomentosa’ and C. grands had obivous differences Conclusion The method is simple and accurate with a good reproducibility. It could be used for quality control and identification of ECG

Objeetive To probe the clinical diagnosis and surgical treatment of primary gastric lymphoma (PGL). Methods Clinical data of 23 PGL patients identified by postoperative pathology were analyzed retrospectively. Sixteen patients underwent subtotal gastrectomy,3 patients underwent total gastrectomy,2 patients underwent palliative resection and 2 patients underwent exploratory laparotomy only. Postoperatively 21 patients received adjuvant treatment(chemotherapy and/or radiotherapy).The variables analyzed were type of surgery, histological type in accordance with Kiel's classification, Involvement of lymph nodes. Ann Arbor stage classification. Results The overall 5-year survival rate of these patients Was 80%,that of low grade malignancy patients was 90%,and of high grade malignancy was 40%.Thirteen patients were classified as stage Ⅰ E and seven as stageⅡE and three as stageⅢor Ⅳ,the 5-year survival rate was 90%,67%and 0,respectively.Nineteen patients underwent radical resection with 5-year survival rate of 92.3%.No patients undergoing palliative resection have survived more than 5 years. The prognosis of PGL with low grade malignancy and that of early stages(IE and Ⅱ E)and those undergoing radical excision was better than those with high grade malignancy, that of advanced stage(Ⅲand Ⅳ),and that undergoing palliative resection. Conclusions Preoperative diagnosis relies mainly on gastroscopy with biopsy and CT scan. For patients with early stage disease,radical resection combined with adjuvant therapy is the key factor in improving the prognosis. Chemotherapy or/and radiotherapy is useful management for patients with advanced stage disease.

Objective To determine the appropriate collecting -time of Exocarpium citri grandis,the chemical compo-sition in Exocarpium citri grandis in different fruit -ages was compare d and analyzed.Methods Contents of naringein and bergapten were compared by TLC an d the total dihydroflavones in Exocarpium citri grandis was determined by spec-trophotometmic analysis with detection wavelength at 384nm.Results With the increase of fruit -age,the c ontents of naringein and total dihydroflavones in Exocarpium citri grandis decreased and the content of bergapt en increased.Con-clusion Fruit -age has an obviously effect on the chemical composition in Exocarpium citri grandis and collecting -time can influence the quality of medicin e materials.Further studies of Exocarpium citri grandis should be combined pharma-codynamics for fixing collecting -t ime.

Objective To discuss the modern surgical treatments for congenital choledochal cysts complicated with anomalous junction of pancreaticobiliary ductal system through analyzing data in 30 cases. Methods The 30 cases were diagnosed with ERCP, MRCP, cholangiography or dissection, respectively. Then 28 of them were treated with external drainage (n=2), internal drainage (n=9) and Roux-en-Y hepaticojejunostomy (n=22), respectively. Of the 28, 5 received operations twice. Results External drainage was helpful in emergency cases while internal drainage frequently resulted in recurrent cholangitis, choledocholith, anastomotic stenosis or cyst malignancy that needed to be operated on again. Choledochocyst resection and pancreaticobiliary shunt achieved satisfactory results. Conclusions Congenital choledochal cyst is usually complicated with anomalous junction of pancreaticobiliary ductal system (88.2%). As for its treatment, choledochocyst resection, pancreaticobiliary shunt and hepaticojejunostomy should be of the first choice.