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.

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

Acute Disease ; Adolescent ; Adult ; Female ; Humans ; Male ; Middle Aged ; Paraquat ; poisoning ; Retrospective Studies ; Young Adult

BACKGROUND: D-galactose-induced aging animal model is similar tohuman natural aging. Whether the expression of protein phosphatase-1(PP-1) in the brain of D-galactose-induced aging mice is related to cerebralaging process or not should be researched further. OBJECTIVE: To investigate the effect of the APP17 peptide and theliquid extract ofjiunao yizhi capsule on regulating the expression of PP-1 inhippocampal neurons of the aging mice induced by the D-galactose (D-gal). DESIGN: A random controlled study. SETTING: Department of Pathology, College of Basic Medical Sciences, Capital University of Medical Sciences and Beijing Research Laboratory forBrain Aging, Xuanwu Hospital of Capital University of Medical Sciences. MATERIALS: The study was completed between July 2003 and July2004 in the Experimental Center of Capital University of Medical Sciences. Forty male Kunming mice (SPF grade) with a body mass fron 28 g to 32 gwere purchased from Chinese Academy of Medical Sciences Institute ofMaterial Medical.METHODS: Kunming mice were randomly divided into 5 groups: control group, D-gal group, APP17 peptide treatment group, low dose herb treatment group, and high dose herb treatment group with 8 mice in each group. In Dgal group, APP17 peptide treatment group, low dose herb treatment group and high dose herb treatment group, galactose was injected subcutaneously (50 nmg/kg). Meanwhile, 0.1 mL normal saline containing 0.35 μg of APP17 peptide was injected subcutaneously into the mice in APP17 peptide treatment group, once a day for 3 months; liquid extract of jiunao yizhi capsule (provided by Beijing Chaoyangmen Hospital and Shanxi Quwo Traditional Medical Institute; the main component: dangshen, baizhu, guijia and chuanshanjia, etc.) was perfused by stomach (0.3 g/kg and 1.0 g/kg respectively) in low dose herb treatment group and high dose herb treatment group, once a day. And equivalent normal saline was injected and perfused in the two control groups. After 3 months of survival, the mice were killed and their brains were cut into sections. The immunohistochemical staining of these sections was then performed with PP-1 antibody.MAIN OUTCOME MEASURES: The results of immunohistochemical staining analysis of PP-1.RESULTS: Forty mice entered the final analysis without any loss. PP-1 positive cells in the hippocampus were poorly stained in the D-gal mice. In contrast, PP-1 positive neurons were widely distributed in the hippocampus of those normal mice, the APP17 peptide-treated D-gal mice and the high liquid extract of raw herb-treated D-gal mice. These cells were darkly stained in cytoplasm. The unexpected result was that in the low liquid extract of raw herb-treated D-gal mice the number of PP-1 positive neurons did not increase to normal.CONCLUSION: The results demonstrated that the expression of PP-1 decreased in the hippocampus of D-gal mice. The APP17 and low dose liquid extract of raw herbs can regulate the distribution of PP-1 in the brain of D-gal mice and make them recover to normal situation.

BACKGROUND: In brain insulin does its work through the insulin receptor substrate (IRS). Amyloid beta protein precursor 17 (APP17) peptide has the neurotrophic function, which may improve diabetic encephalopathy resulted from insulin deficiency by affecting insulin receptor substrate.OBJECTIVE: The mouse diabetic model was produced to observe the effect of APP17 peptide on the distribution of IRS-1 in brain tissues.DESIGN: Randomized control animal experiment.SETTING: Staff Room of Pathology, College of Basic Medical Sciences,Capital University of Medical Sciences; Beijing Research Laboratory for Brain Aging of Xuanwu Hospital.MATERIALS: The experiment was performed in Staff Room of Pathology,College of Basic Medical Sciences, Capital University of Medical Sciences and Beijing Research Laboratory for Brain Aging of Xuanwu Hospital from September to October 2003. Totally 18 male kunming mice were employed,and randomly assigned into control group, diabetic group and APP17 peptide treatment group with 6 mice in each group.METHODS: ①The mice were subjected to intraperitoneal injection of streptozotocin (STZ, Sigma) by 200 mg/kg, and 3 days later, the tail blood was sampled to examine non-fasting blood glucose, and the blood glucose over 15 mmol/L was set as the criteria for successful diabetic model establishment. ②In APP17 + diabetes mellitus group, the mice received subcutaneous injection of 0.35 μg APP17 peptide once daily for 2 weeks. The mice in the normal control group were not interfered. ③Then brain was removed and crystat sections were prepared. Immunohistochemical staining was done for IRS-1 at four weeks after giving streptozotocin.MAIN OUTCOME MEASURES: Pattern and distribution of IRS-1 positive cells of mice in each group.RESULTS: Totally 18 mice were involved in the result analysis. ①In the brains of diabetic mice the IRS-1 immunohistochemical positive cells distributed at cortex, hippocampus, thalamus, hypothalamus and so on, while the positive cells distributed only at cortex and hippocampus in the normal control group and APP17 peptide treatment group, lightly stained. ②Numbers of immunohistochemical positive cells of IRS-1 of cerebral hippocampus in the diabetic group, normal control group and APP17 peptide treatment group were (28.7±1.5), (9.2±1.5), (10.1±1.4) piece per 10 power object lens, and that in the diabetic group was higher than that in the other two groups (P ＜ 0. 001 ). CONCLUSION: Neurons in many regions of brains of diabetic mice have plenty of IRS-1 positive cells. APP17 peptide can make part and quantity of IRS-1 positive cells normality so as to ameliorate the degeneration of hippocampal neurons of diabetic mice.