Pediatric liver transplantation has long been developed in the western world.Currently,favorable outcomes after liver transplantation have been achieved in pediatric recipients and the postoperative 5-year survival rate reached 80％ in western transplantation centers.In the mainland China,pediatric liver transplantation started quite recently and there is still a big gap compared with western centers.In addition,there is unbalanced development between adult and pediatric recipients due to surgical difficulties and undesirable outcomes following pediatric liver transplantation.The operation methods of pediatric liver transplantation include whole liver transplantation,reduced-size liver transplantation,living donor liver transplantation and split liver transplantation.Perioperative complications of pediatric liver transplantation mainly include portal vein thrombosis,hepatic artery thrombosis,intra-abdominal bleeding,infections,rejection,bile leakage and biliary strictures.While the long-term complications are infections,post-transplantation lymphoproliferative disorders,acute and chronic rejections caused by poor compliance with immunosuppressive therapy.Perioperative complications have been reduced recently thanks to improvement of surgical techniques.With the highly-prolonged survival period,long-term postoperative complications have been playing a significant role in recipients' survival rates.Management of long-term follow-up and compliance has been the next focus of pediatric liver transplantation.

Cholangiocarcinoma (CCA) is a malignant neoplasm derived from cholangiocytes. The incidence of CCA is only lower than that of hepatocellular carcinoma and ranked the second in liver malignant cancers. The prognosis of CCA patients is poor and most patients will die within a few months after diagnosis. CCA is related to various risk factors, including primary sclerosing cholangitis, cirrhosis, certain chemical agents and liver fluke. Establishment of proper animal models of CCA can not only be helpful for understanding the mechanisms of incidence and development, but also lay a solid foundation for developing novel treatment strategies. Common animal models of CCA include carcinogen-induced models, implantation models, operation models, and genetically engineered models.

AIM: To examine whether reactive oxygen species (ROS) is involved in the neuroprotection by mitochondrial ATP- sensitive potassium channel (mitoKATp) in rat hippocampal slices during hypoxia. METHODS: The technique of elec-trophysiology was used, and the latency to hypoxic depolarization (HD) and the amplitude of population spike (PS) in the stratum pyramidale of the CA1 region were measured. RESULTS: Pretreatment of the slices with diazoxide (DIA, a mitoKATP opener, at concentration of 300 ?mol/L) , prolonged the latency to HD, delayed the onset of PS disappearance and improved the recovery of PS after reoxygenation. The effects induced by DIA were attenuated by 5 - hydroxydecanoic acid (a mitoKATP blocker, at concentration of 200 ?mol/L). Pretreatment with N - 2 - mercaptopropionyl glycine (MPG, a ROS scavenger, at concentration of 500 ?mol/L), also abrogated the effects induced by DIA, while treatment of MPG alone had no effect on PS and HD. CONCLUSION: ROS participates in neuroprotection offered by mitoKATp opener during hypoxia.

Objective To investigate the clinical and pathological features of children malignant lymphoma.Method A retrospective study was carried out to analyse the clinical,laboratory and pathological data in 65 patients with malignant lymphoma.Results In the chidren malignant lymphoma,the incidence of nonHodgkin′s lymphoma(NHL) was more than that of Hodgkin′s disease(HL),the ratio of NHL to HL was 2.25∶1.The peak incidence of age was among 6 to 9 years old,the ratio of male to female is about(3.5∶1.)NHL of our children was mostly consised of lymphoblastic lymphoma,anaplastic large-cell lymphoma,diffuse large B-cell lymphoma and Burkitt′s lymphoma.The clinical manifestations were predominantly presented with peripheral nodes intumescing,mediastinal tumeur,abdominal tumeur,bone marrow infiltration.In patients with Hodgkin′s disease,mixed cellularity was the most common pathological category,and cervical painless lymphadenectasis was usually the initial signs in most patients,sometimes accompanied with infiltration of celiac lymph nodes,spleen and bone marrow.Conclusions NHL of our children differs from that of adult in the clinical feature and pathology,while HL of our patients is similar to adults.Since the prognosis of the malignant lymphoma is determined by its pathology,immunohistochemistry plays an important role in the diagnosis and differential diagnosis.J Appl Clin Pediatr,2006,21(3):160-161

Adenocarcinoma, Mucinous ; metabolism ; pathology ; surgery ; Aged ; Biomarkers, Tumor ; metabolism ; Carcinoembryonic Antigen ; metabolism ; Carcinoma, Pancreatic Ductal ; metabolism ; pathology ; surgery ; Carcinoma, Papillary ; metabolism ; pathology ; surgery ; Cystadenocarcinoma, Mucinous ; metabolism ; pathology ; surgery ; Diagnosis, Differential ; Duodenal Neoplasms ; metabolism ; pathology ; surgery ; Female ; Follow-Up Studies ; Humans ; Immunohistochemistry ; Male ; Middle Aged ; Mucin-2 ; Mucins ; metabolism ; Neoplasm Invasiveness ; Pancreatic Neoplasms ; metabolism ; pathology ; surgery ; Pancreaticoduodenectomy

Anti-Inflammatory Agents ; pharmacology ; Child, Preschool ; Humans ; Infant ; Infant, Newborn ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; complications ; pathology ; Prednisone ; pharmacology

Endophytic fungi which reside in the tissue of mangrove plants seem to play an important role in the discovery of new biologically active substances. During the course of screening for the antimicrobial metabolites from the endophytic fugus Penicillium sp. FJ-1 of mangrove plant Avicennia marina, a new aurone glycoside (1) was isolated by repeated column chromatography on silica gel and recrystallization methods. The structure of 1 was elucidated as (Z)-7,4'-dimethoxy-6-hydroxy-aurone-4-O-β-glucopyranoside, on the basis of spectroscopic analysis. Compound 1 exhibited antifungal activity against Candida sp., with the potency comparable to amphotericin B and much better than fluconazole. Compound 1 can also inhibit extracellular phospholipase secretion in a concentration-dependent manner.
Antifungal Agents ; chemistry ; isolation & purification ; metabolism ; pharmacology ; Benzofurans ; chemistry ; isolation & purification ; metabolism ; pharmacology ; Candida ; drug effects ; Glycosides ; chemistry ; isolation & purification ; metabolism ; pharmacology ; Molecular Structure ; Penicillium ; chemistry ; genetics ; isolation & purification ; metabolism ; Seawater ; microbiology

Competition of teaching skills is regarded as an effective means to develop teacher's ability in teaching.This article briefly described a teaching competition at a medical school from participant identification,requirement clarification,training before competition,evaluation index screening and interviewer selection.Meanwhile the article further analyzed and analyzed the problems arising from the competition and proposed measures to promote teachers' awareness and ability of teaching.

Objective To establish a method for the determination of gastrodin in Tianyuan Granula. Methods The sample was refluxed with methanol, then eluted with 80 % ethanol through the alumina column(neutral). The chromato-graphic conditions were as follows: Diamonsil Cts chromatographic column(250 mm ×4.6 mm, 5 μm) with a mobile phase of acetonitrile-0. 15 % phosphoric acid (1 : 99), the detection wavelength being at 220 nm and the flow rate be-good (r=0.9999 95, n=7).The average recovery was 99.09 % and RSD=1. 50 % (n=6). Conclusion The method for determination of gastrodin in Tianyuan Granula is accurate, and with a good reproducibility.