Varieties of chemotherapeutic regimens based on fluorouracil have been recently developed.This review summarized widely used regimens of fluorouracil based chemotherapy in this decade.The common side effects,their mechanisms and clinical prevention and symptomatic treatment for these adverse reactions were also discussed.Therefore,this review will provide guidance for regimen selections,and improve the efficacy and safety of chemotherapy.In addition,the detailed information and data presented in this paper may be helpful in the development of new chemotherapy regimens.

Objective: To study the protective mechanism of Donepezil on apoptosis of PC12 cells induced by amyloid beta protein. Methods: PC12 cells were cultured as previously,then amyloid beta protein and Donepezil were used to treat PC12 cells.Morphology observation,TUNEL and immunocytochemistry were employed to investigate the damage of PC12 cells induced by A?,protection of Donepezil on apoptosis of PC12 cells and the expression of Bcl2 and Caspase-3 in A?-treated group and Donepezil-treated group. Results: A? induced apoptosis of PC12 cells in a dose-dependent way;Compared to the group treated with A? only and the group post-treated with donepezil, the apoptosis index of PC12 cells(17.29?0.83)% and expression of Caspase-3(26.46?2.87)% were significantly downregulated in the group pretreated with donepezil(P0.05). Conclusion: This study demonstrated that Donepezil can protect PC12 cells against apoptosis induced with amyloid protein,which was closely related to the time of interference.The mechanism of protection was involved with the expression of Bcl-2 and Caspase-3.

?Silent information regulator protein 1 ( SlRT1 ) is a kind of histone deacetylases class lll on which cell metabolism coenzyme NAD+ is dependent. By the transcriptional regulation, it participates in the regulation of gene transcription, energy metabolism and cell aging process, which can prolong the lifespan of organisms and delay the development of various age-related diseases and has attracted much attention in the field of anti - aging research. ln recent years, studies have shown that SlRT1 occupies an important position in the pathogenesis of many ophthalmic diseases, especially in ocular surface diseases, glaucoma, cataracts, uveitis, and ocular fundus diseases, etc. There is a possibility that the promotion of SlRT1 activity would be the new drug target of ophthalmic therapy. The paper will review studies on SlRT1 and ophthalmic diseases.

BACKGROUND:Adult central nervous system lacks the ability to regenerate,so it is of great significance to find a new source of neural stem cells.OBJECTIVE:To investigate the differences between basic fibroblast growth factor(bFGF)and epidermal growth factor(EGF)in inducing bone marrow mesenchymal stem cells(MSCs)to differentiate into neurons in vitro.METHODS:MSCs were isolated from normal human bone marrow using density gradient centrifugation and cell attachment method.MSCs were plated in 96-well culture plates at a density of 0.25×108/L and cultured with 200 μL DMEM/F12 for 0,1,2,3,4,5,6,and 7 days,with 20 μL MTT(5 mg/mL)in 5 wells at each time point.The supernatant was removed and 100 μL dimethyl sulphoxide was added to each well for 4 additional hours of incubation.In addition,some cells were exposed to bFGF and EGF.Growth curve was determined with MTT method.Telomerase activity were examined by TRAP(PCR)-ELISA.Additionally,the functional differences of the two cytokines were checked by RT-PCR.RESULTS AND CONCLUSION:RT-PCR revealed that nestin,glial fibrillary acidic protein(GFAP)and neurofilament subunit M (NF-M)mRNA were expressed in un-induced MSCs of passage 4.Nestin expression reduced at 7 days.The expression of micro-tubule-associated protein-2(MAP2)mRNA was not detected until the induction,and increased thereafter.The expression of MAP2 mRNA was greater in bFGF+EGF and bFGF alone groups compared with EGF alone group,and the expression of GFAP in EGF alone group was greater than other groups.Results showed that MSCs can be cultivated,proliferated and differentiated into neural stem cells in vitro.The differentiated neural stem cells have the activity of proliferation,but not have the ability of infinite proliferation as tumor cells.

Placental pathologies include placental insufficiency,infection,meconium stained,abnormal planting and placental vascular anastomosis,et al.All those can lead to fetal and neonatal hypoxia ischemia or premature birth,which can cause brain damage.

Objective To facilitate a better understanding of the progress in the research, diagnosis and treatment of Peutz Jeghers syndrome (PJS).Methods Almost all the papers related to PJS from various magazines published in English and Chinese in recent years were reviewed. Current progresses in PJS research and related diagnosis and treatment were discussed in this review.Results PJS is a rare inherited disease with autosomal dominant trait, which is characterized by the presence of hamartomatous gastrointestinal polyps and mucocutaneous pigmentation of the lips, buccal mucosa, and digits. This syndrome is commonly complicated with intestinal obstruction, bleeding, or intussusception,and patients with this disease are at high risk for the development of both GI and extraintestinal malignancies. STK11 on chromosome 19p13.3 are responsible for most cases of PJS. The polyps of PJS tend to have a high incidence of malignant change, and the recurrence of malignancy after treatment is also high. Conclusion The STK11 has been identified as one of the main genes responsible for PJS and has close correlation with formation and development of tumors. Patients with PJS are at high risk for the development of both GI and extraintestinal malignancies.

Objective To investigate the clinical effect of minimally invasive plate fixation in the treatment of calcaneal fractures.Methods 68 patients with calcaneal fractures were selected as the research subjects,they were randomly divided into the control group and observation group,34 cases in each group.The control group received open reduction and plate internal fixation,while the observation group was treated with minimally invasive plate fixa-tion.The clinical results and complications of the two groups were observed.Results The excellent and good rate was 94.1 2% in the observation group,which was significantly higher than 79.41 % in the control group,the difference was statistically significant(χ2 =9.397 6,P <0.05 ).The Bohler angle and Gissane angles in the control group were (28.67 ±2.04)°,(1 21 .87 ±8.23 )°after treatment,which were significantly higher than (6.45 ±1 .21 )°, (1 01 .65 ±8.56)°before treatment.After treatment,the Bohler angle and Gissane angles of the observation group were (32.56 ±3.25 )°,(1 29.45 ±1 2.86)°,which were significantly higher than (6.36 ±1 .26)°,(1 01 .54 ± 8.27)°of the control group,the differences were statistically significant(P <0.05),and the increase of Bohler angle and Gissane angle of the observation group was more obvious than the control group.The incidence rate of complica-tion in the observation group was 2.94%,which was lower than 8.82% in the control group,the difference was statis-tically significant(χ2 =3.923 7,P =0.047 7).Conclusion Minimally invasive plate fixation in the treatment of cal-caneal fractures has significantly smaller incision,and can reduce the incidence of complications,it is worthy of clini-cal application.

With the development of medical theory and technology, the traditional teaching patterns have fallen behind the requirements for the training of medical students. Recently, virtual reality techniques have been proved to be effective in the practice of medical education. Through sum-marizing the experience of building simulation systems of eye anatomy, clinical features of eye and simulation practice, the author has elaborated the role of virtual reality technology in ophthalmology teaching theory and practice, which is of profound significance to improve the overall level of ophthal-mology teaching.

Objective To study the clinical effect of Zhenqifuzheng granule combined with Tegafur gimeracil oteracil potassium capsule in treating advanced carcinoma of gastric cardia in aged patients.Methods 52 cases of aged patients with advanced carcinoma of gastric cardia were randomly divided into the observation group and the control group.The observation group was treated with zhenqi fuzheng granule combined with tegafur gimeracil oteracil potassium capsule,and the control group was given Tegafur gimeracil oteracil potassium capsule only.The curative effect,adverse reaction and cellular immune function were evaluated after two treatment cycles.Results There was no statistically significant difference in the objective efficacy rate between observation (46.2％) and control group (50.0％) (P＞0.05).The rate of adverse reaction was higher in the control group than in observation group (P＜0.05).The rate of gastrointestinal adverse reactions in the control group was 50.0％,but 15.4％ in observation group.The rate of bone marrow suppression was 26.9％ in control group,but 11.5％ in observation group.The cellular immune function was better in observation group than in the control group (P＜0.05).Conclusions Zhenqifuzheng granule can improve immune function and reduce toxic side effects when combined with Tegafur gimeracil oteracil potassim capsule in treating advanced carcinoma of gastric cardia in aged patients.

Accurate imaging of lymphoma is essential for optimal management. Positron emission tomography(PET-CT),by providing both anatomic and functional information,is fundamentally altering staging,monitoring of response,response assessment,and choice of treatment modality for lymphomas, including Hodgkin lymphoma. This imaging technique, when used carefully in conjunction with standard testing,increases the sensitivity of lesion detection, provides an opportunity to monitor the quality of response during treatment, permits separation of fibronecrotic scartissue from viable tumor, and adds prognostic information.PET-CT has become integral to modern lymphoma management, but as a relatively new diagnostic technique,it is still being studied and neither its full potential nor its major limitations are fully understood. Discussed herein are recent observations from clinical trials and single-center experiences with PET-CT to explore its advantages and limitations from a clinician’ s point of view.