Objective The current study was designed to evaluate the efficacy and toxicity of taxol plus fluorouracil(TF)chemotherapy in patients with advanced gastric cancer.Methods 55 patients with ad- vanced gastric cancer were treated with TF schedule.A treatment cycle lasted 21 days.The efficacy was eval- uated after 2～3 cycles of the chemotherapy.Results These 55 patients were evaluated the efficacy and the toxicity.The total efficiency rate of TF schedule was 45.45 %.Clinical Benefit Response(CBR)were evaluated in 35 patients.Ache remission rate was 86.6 %.The main side effect of toxicity was neutropenia.The total re- sponse neutropenia is 56.4 %.The aboveⅢstage was 10.9 %.The rate of nausea and vomiting was 43.6 %. Conclusion The combination of taxol and fluorouracil is a high response protocol with mild toxicity.TF schedule has high efficiency for advanced gastric cancer,especially for the patients who had had chemothera- py with fluorouracil.

Objective: To investigate the effects of different magnetic simulations on cell proliferation, cell cycle, apoptosis, and cell differentiation of human fetal neural stem cell in vitro. Methods: Isolated neural stem cells were exposed to magnetic stimulation (with a frequency of 0.5 Hz, a wave wide of 72 μs and an intensity of 1.44 Tesla) once daily for 3 days. The cells were divided into three groups according to the pulses of magnetic stimulation each time: A group (thirty pulses each time), B group (sixty pulses each time), C group (ninety pulses each time) and D group (control group). MTT assay was applied to detect the proliferation activity of the neural stem cells, and flow cytometry was employed to detect the effect of magnetic stimulation on cell cycle, cell apoptosis, and cell differentiation. Results: The D values of neural stem cells in A, B, and C groups were significantly higher than those in the control group 24 to 48 hours after stimulation(P<0.05), indicating a slightly promoted proliferation of neural stem cells after magnetic stimulation. The proportions of G0/G1 phase cells of A, B, and C groups were less than those of the control group, and the proportion of G2/M-phase cells was higher than that of the control group. The proportions of β-tuberlin positive neurons in A, B, and C groups were higher than those in the control group as demonstrated by flow cytometry, and the proportion of neurons increased from 21.70% to 34.17% (P<0.05). Conclusion: Under proper condition, magnetic simulation can slightly promote cell proliferation and can induce neural stem cell differentiation into neurons in vitro, which may benefit neural function reconstruction.

OBJECTIVE:To provide reference for rational use of antibiotics in patients with AECOPD. METHODS:The patho-gen distribution and antibiotics use of AECOPD patients was analyzed in respiratory department of our hospital during 2014-2015. The infection site,pathogen distribution and antibiotics use(including medication purpose,drug name,usage,dosage,medication duration,route of administration,drug combination),infection and compliance were investigated and analyzed statistically. RE-SULTS:Among 967 AECOPD patients,there were 619 cases of positive sputum culture(64.01%). A total of 774 strains were iso-lated,including 542 strains of Gram-negative bacterial (70.03%) and 232 strains of Gram-positive bacterial (29.97%);most of them were Pseudomonas aeruginosa(207 strains,26.72%). 765 patients were treated with antibiotics,and utilization ratio of an-tibiotics was 79.11%. 276 cases were treated with one kinds of antibiotics (36.08%),435 treated with 2 kinds of antibiotics (56.86%)and 54 treated with 3 kinds of antibiotics and above(7.06%). Top 3 drugs in the list of frequency were Levofloxacin injection(455 cases/times,47.05%),Moxifloxacin injection(241 cases/times,24.92%)and Cefmetazole for injection(192 cas-es/times,19.86%). Top 3 drug combination regimen were Cefmetazole for injection+Levofloxacin injection (107 cases/times, 21.88%),Cefoxitin for injection+Levofloxacin injection(96 cases/times,19.63%)and Moxalactam for injection+Levofloxacin in-jection(65 cases/times,13.29%). CONCLUSIONS:Anti-infective therapy regimen of AECOPD patients should be formulated ac-cording to relevant guideline,and pathogenic factors of infection are analyzed. Great importance should be attached to reasonable, scientific,safe and standard use of antibiotics,etiological examination;pathogenic bacteria culture and drug sensitivity test should be conducted as soon as possible. So as to obtain better therapeutic efficacy and reduce the generation of drug-resistant strain.

Hair follicle stem cells located bulge region of hair follicle,had characteristics of all adult stem cells,including slow-cycling,undifferentiated.They also had the abilities of self-renew and proliferation in vitro.CD34,K15,K19 and Nestin might be the makers of the hair follicle stem cells.They could be induced to differentiate to neurons,glial cells,keratinocytes,smooth muscle cells,melanocytes In vitro and neurons,melanocytes in vivo.There were many signals in regulating the hair follicle stem cells involved Wnt signal,BM Psignal and NFATc1 etc.

BACKGROUND:Compared with smooth titanium, titania nanotubes cannot only induce mesenchymal stem cels osteogenic differentiation and promote bone integration, but also be used as drug nanocarriers. OBJECTIVE:To prepare dexamethasone-loaded titania nanotube system and to test its drug release characteristics. METHODS:Titania nanotubes were prepared by electrochemical anodic oxidation, and dexamethasone was dripped onto the prepared titania nanotubes. Subsequently layer by layer self-assembly technology was employed to fabricate gelatin/chitosan multilayered structure on the prepared samples. Scanning electron microscope and contact angle test were carried out during the process of building the gelatin/chitosan multilayered structure. The drug release was measured by a ultraviolet spectrophotometer. RESULTS AND CONCLUSION:Under the scanning electron microscopy, the fabricated titania nanotubes had integral structure with even tube size of about 70 nm and arranged regularly, and the nanotubes were completely covered and sealed by the gelatin/chitosan multilayered membrane. Contact angle test results showed that ever since the fifth layer, contact angles changed alternately and displayed a zigzag profile. Ultraviolet spectrophotometer test results showed that when cultured for 3 hours, the cumulative drug release was about 32.7% and demonstrated an initial burst folowed by sustained release. When cultured for 24 hours, the cumulative drug release about 52.3%. However, after cultured for 7 days, little drug release was detected. And there was about 8.0%-10.0% dexamethasone of initial loading preserved in nanotubes.

Background The application of femtosecond laser in the corneal refractive surgery has made great progression recent years,but the morphology characteristic of corneal stroma surface after making-flap of femtosecond laser is closely concerned.Objective This study was to analyze the influence of photodisrnption of femtosecond laser on the corneal stroma surface and to investigate the effect of different laser pulse energy on the sudace ultrastructure of corneal stroma.Methods Corneal flaps were made with Visu Max femtosecond laser in 16 fresh porcine eyes with the pulse energy 125 nJ,155 nJ and 195 nJ respectively,and Moria-M2 microkeratome was used as control.Scanning electron microscopy (S-3400N Hitachi High-Technologies Corp) was used to observe and compare the ultrastructural characteristic of corneal stroma bed surface after making of corneal flap.Results The corneal strnma was evaporated and created a smooth surface when photodisrnption happened in the femtosecond laser group.Residual tissue bridges could been exhibited among the cavitation bubbles under the scanning electron microscope.Corneal strnma surface was smooth in the 125 nJ pulse energy group,but some tissue bridges still were visible.In the 155 nJ pulse energy group,much more smooth surface was seen without tissue bridges and mechanical damages on the corneal surface.However,the surface quality was worse and many tissue bridges and grooves existed in the 195 nJ pulse energy group.In addition,different sizes of slots caused by big cavitation bubbles were visible with the round and oval shape.The edges were regular and sharp with small damage zone after cutting with femtoseeond laser.However,many elevated fibril tissues could be seen on the corneal surface after making of flap with microkeratome.Many crimp and irregularity tissues were found on the surface.Blunt surface and indentations appeared in the cutting edge.Conclusions The mierostrueture of corneal stroma surface is more smoother after making of corneal flap with fentosecond laser in comparison with microkeratome.Pulse energy of 155 nJ is preferably during the making-flap with femtosecond laser.

Background:Ulcerative colitis(UC)is often accompanied by a variety of extraintestinal manifestations. Recently, the role of extraintestinal manifestations in diagnosis and treatment of UC has aroused widespread concern in clinical practice. Aims:To study the extraintestinal manifestations of patients with UC in order to elevate diagnosis level of UC. Methods:A total of 208 inpatients from June 2008 to September 2011 at Beijing Military General Hospital were enrolled. The extraintestinal manifestations of UC were retrospectively analyzed. Results:The ratio of male to female was 1. 14: 1, mean age was(41. 17 ± 13. 57)years,mean disease duration was(62. 6 ± 79. 4)months. Thirty-three patients had proctitis,52 had left-sided colitis,and 123 had extensive colitis. Forty-nine patients were mild UC,80 were moderate UC, and 79 were severe UC. The incidence of extraintestinal manifestations was 28. 8%(60 / 208);13 patients(6. 3% )had more than one extraintestinal manifestation. The main extraintestinal manifestations were oral ulcer(13. 0% ),arthropathy (11. 1% ),hepatobiliary disease( 3. 8% ) and skin lesion( 1. 4% ). The trend of incidence of extraintestinal manifestations increased from patients with proctitis,left-sided colitis to extensive colitis(21. 2% ,28. 8% ,30. 9% , respectively),however,the difference was not statistically significant(P > 0. 05). No significant difference in incidence of extraintestinal manifestations in patients with mild UC,moderate UC and severe UC was found(22. 4% ,33. 8% ,27. 8% , respectively)(P > 0. 05). Conclusions:Patients with UC are often accompanied by extraintestinal manifestations,and the recognition of extraintestinal manifestations is helpful for improving diagnosis and treatment level of UC.

Objective To investigate the levels of 14 kinds of food allergic specific IgG antibody in eczema and chronic urticaria patients'serum and the role of food allergens in allergic skin diseases and provide scientific basis for clinical treatment and prophylaxis. Methods We used ELISA method to detect the concentration of 14 kinds of food allergic specific IgG antibody in the serum of 900 eczema and chronic urticaria patients and 18 healthy people. Results The food allergen of positive rate in studied group and control group was 90.2% and 11.1%. The positive rate of 14 kinds of food allergic specific IgG antibody in 900 eczema and chronic urticaria patients' serum from high to low was eggs, wheat, shrimp, milk, soja,crab, rice, corn, tomato, chicken, mushroom, beef, pork and ling. The food allergen positive rate in eczema and chronic urticaria patients'serum was 91.9% and 88. 9% ( P >0. 05). The positive rate of shrimp,mushroom and ling in eczema patients'serum was higher than that in chronic urticaria patients'serum ( P <0. 05 ). The positive rate in children's group was 96. 6%, which was higher than other age groups ( P >0. 05 ). The main allergens were egg, wheat and milk in children's group. The sensitization of crab and shrimp increased as people grew up. In 812 positive patients, who were intolerant of three and more than three foods accounted for 53.7%. In 175 follow-up patients, the effective rate was 50.9% in 20 days and 61.1% in 60 days after they avoided the intolerant food. The patients'diet was adjusted according to the test results.In 325 follow-up patients, the effective rate in eczema group was 59.9% in 20 days and 70. 4% in 60 days ( P <0. 05). Thee effective rate in chronic urticaria group was 65.6% in 20 days and 77. 3% in 60 days ( P <0.05 ). Conclusion The intolerant food can be found by detecting serum food allergen specific IgG.It can be used to adjust the diet and relieve the symptom, which is of great importance for preventing and treating allergic skin diseases.

Response surface methodology (RSM) was used to optimizing the ultrasonic-assisted extraction technology of pigment from Coreopsis tinctoria. The results showed that the flavonoids were the main constituents of the pigment Based on single factor experiments, a four-factor-level experiment design were developed by box-benhnhen central composite design method with causal factors of ultrasonic temperature, ultrasonic time, ratio of liquid to raw material, the concentrations of ethanol in solvent and the extract absorbance value for the response. The interactive effects of four crucial technological parameters were assessed by response surface methodology (RSM). The optimum ultrasonic-assisted extraction conditions were as follow: ultrasonic temperature was 70 °C, ultrasonic time was 60 min, the concentrations of ethanol in solvent was 72.25% and the ratio of liquid to raw material was 32.05:1 mL . g-1. Under the optimum extraction technology conditions, the absorbance value was 0. 936. The conditidns are suitable for the extraction process regression analysis and parameter optimization.
Coreopsis ; chemistry ; Ethanol ; Flavonoids ; isolation & purification ; Pigments, Biological ; isolation & purification ; Plant Extracts ; isolation & purification ; Plants, Medicinal ; Regression Analysis ; Solvents ; Temperature ; Time Factors ; Ultrasonics

Adult ; Ambroxol ; administration & dosage ; therapeutic use ; Expectorants ; administration & dosage ; therapeutic use ; Female ; Glycoproteins ; therapeutic use ; Humans ; Lung ; pathology ; Lung Injury ; drug therapy ; pathology ; Male ; Paraquat ; poisoning ; Respiratory Distress Syndrome, Adult ; drug therapy ; etiology ; Retrospective Studies ; Young Adult