Background Perineural invasion is an important biological character for adenoid cystic carcinoma (ACC) of lacrimal gland,which is different from those of other lacrimal gland tumors.As the important part of neurotrophic factors,glial-derived neurotrophic factor (GDNF) plays an important role in perineural invasion for ACC of salivary gland.GDNF regulation in the ACC cell biology function needs to be further explored.Objective This study was to investigate the effect of GDNF on proliferation and migration of ACC cells,and to explore the mechanism of neural invasion in ACC of lacrimal gland.Methods ACC-2 cell line was cultured and passaged in RPMI 1640 medium with 10％ fetal bovine serum,100 U/ml penicillin and 0.1 g/L streptomycin.Single-cell suspension was prepared with the density of 2×104/ml using logarithmic phase of cells and then incubated to 96-well plate.GDNF with the final concentration of 20,60,80,100 and 120 μg/L was added into the medium respectively in the experimental groups,and the cells were cultured in the medium without GDNF as the control group.The expression of GDNF in ACC-2 cells was detected by immunohistochemistry.MTT assay was employed to assay the absorbance value at the wavelength of 570 nm (A570) for the evaluation of proliferation of ACC-2 cells after cultured by different concentrations of GDNF for different time points.Meanwhile,transwell chamber was used to examine the cell migrated number.Results Immunochemistry assay exhibited that ACC-2 cells showed the positive response for GDNF with the brown staining in the cytoplasm.In 48 hours after culture,the A570 value was elevated with the increase of GDNF concentration,showing a significant difference among various groups (F =3.336,P =0.026),and the A570 value in various concentrations of GDNF groups was higher than that of 0 μg/L GDNF group (all P＜0.05).After action of 80 μg/L GDNF,the A570 value of the cells was gradually increased with the prolong of culture time (Ftime =39.979,P=0.000).In 30 minutes after GDNF cultured,the number of migrated cells increased with the increase of GDNF concentration (F=144.886,P=0.000).ACC-2 cells were cultured by 100 μg/L GDNF for 24,30 and 40 hours,the number of migrated cells were more as the time lapse,and more migrated cells were seen in GDNF group at various time points (Ftime =46.747,P =0.000 ; Fgroup =63.786,P =0.000).Conclusions GDNF can stimulate the proliferation and migration of ACC-2 cells in a dose-and time-dependent manner.

Autophagy is a cellular catabolic pathway that is essential for survival,differentiation,development and homeostasis.The dual roles of autophagy as a tumor-promoting mechanism and a tumor suppressor mechanism have been elucidated in the recent cancer research.The double function is accomplished by some neoplasms-associated signaling pathways which include mTOR-dependent signaling pathway,Beclin1 network,LKB1-AMPK signaling pathway,p53 and p53-related regulators of autophagy.Thus it can be seen that these signaling pathways function dependently and correlatively as inducing and inhibiting autophagy and play different roles in the process that involves growth and development of neoplasms.

Aging ; psychology ; Animals ; Drugs, Chinese Herbal ; pharmacology ; Learning ; drug effects ; Male ; Memory ; drug effects ; Rats ; Rats, Wistar

Child ; Child, Preschool ; Female ; Humans ; Infant ; Infant, Newborn ; Male ; Prognosis ; Staphylococcal Scalded Skin Syndrome ; diagnosis ; drug therapy

Glioma is the most common form of brain cancer. Despite recent advances in the treatment of solid tumors, there are few effective treatments for malignant gliomas due to its infiltrative nature. It has important significance to improve the treatment of glioma through in-depth understanding the intracerebral metabolic characteristics and pharmacokinetics of chemotherapeutics. Brain microdialysis (B-MD), an effective method to monitor central nervous system anticancer drug disposition, conditions of drugs through the blood-brain barrier, basic pathophysiologic metabolism, bioactive compounds and the changes of neurotransmitter in brain, provides the unique opportunity to allow the simultaneous determination of unbound concentrations of drugs in several tissues, and directly measure gliomas biochemistry continuously. B-MD has been able to monitor the change of brain drugs, metabolites and neurotransmitters, dynamic analysis of the drug concentration and pharmacological effect after administration, pharmacodynamic interaction between drugs, receptor mechanism of drug transport, as well as feedback information of internal environment. B-MD is expected to provide reference for clinical individual chemotherapy of glioma, but also provide powerful tools for the evaluation of new anticancer drugs in vivo. In this review, a comprehensive overview of B-MD for studies on glioma is elucidated with special emphasis on its application to neurochemistry and pharmacokinetic studies.
Animals ; Antineoplastic Agents ; pharmacokinetics ; Blood-Brain Barrier ; Brain Neoplasms ; metabolism ; Glioma ; metabolism ; Humans ; Magnetic Resonance Spectroscopy ; Metabolomics ; methods ; Microdialysis ; methods ; Neurotransmitter Agents ; pharmacokinetics ; Pharmaceutical Preparations ; metabolism ; Positron-Emission Tomography

Objective To investigate the application of dual volume reconstruction translucent imaging in performing stent- assisted coil embolization for intracranial aneurysm embolization treatment. Methods During the period from Nov. 2011 to Sep. 2012, a total of 30 patients with intracranial aneurysm were admitted to authors’ hospital. Stent-assisted coil embolization was carried out in all patients. The number of all the stent point-marks visualized on routine 2D-DSA, on rotational angiography (3D-RA) and on dual volume reconstruction translucent images were determined, and the results were compared between each other of the three imaging methods. Results A total of 34 stents (206 stent point-marks in total) were implanted in the 30 patients. Of the 206 stent point-marks, 2D-DSA, 3D-RA and dual volume reconstruction translucent image could clearly display 146 (70.8%), 123 (59.7%) and 190 (92.2%), respectively. Statistically significant difference in the displaying rate of the stent point-marks existed between each other among the three imaging methods (P < 0.05). Conclusion Dual volume reconstruction translucent imaging can distinctly display the location of the stent marks, which is of great value in guiding the performance of intracranial stent implantation surgery.

A thiosulfate-oxidizing bacterium TX was isolated from polysulfide wastewater treatment system.It was preliminarily identified as Halothiobacillus sp.according to its morphological,physiological proper-ties and similarity analysis of 16S rRNA gene sequence(GenBank accession No.EU871645).This bacte-rium was an obligate chemolithoautotrophic sulfur-oxidizing bacterium since it could utilize thiosulfate,elemental sulfur,tetrathionate,sulfide or sulfite as sole energy source but did not show growth on the me-dium with glucose,sucrose,fructose,lactose,mannose or yeast extract as sole carbon source.The optimal growth condition for thiosulfate oxidation was 30?C~35?C and pH 3.0~5.0 respectively.Significant reduc-tion in medium pH from 4.0 to 1.2 was observed due to oxidation of thiosulfate to sulfate during the batch culture incubation period.During the course of thiosulfate oxidation accumulation of tetrathionate was ob-served either in synthetic medium or in the mixed liquor from aeration tank of the polysulfide wastewater treatment system.This indicates that the "S4 intermediate(S4I)" pathway was responsible for thiosulfate oxidation in this bacterium.

Objective To comprehend etiology and clinical manifestation changes of infant pneumonia in this locality.Methods Indirect immunofluorescence (IIF) assay was applied in children with acute pneumonia to detect serum 11 kinds of viruses[respiratory syncytial virus (RSV),adenovirus (ADV),influenza virus (IFV-A+B),parain fluenza virus(PIV14) ,coxsackie B,virus(CB1V),Coxsackie A7 virus (CA7V) ,ECHO virus]specific antibody IgM,according to the serum virus-specific IgM positive,C-reactive protein(CRP)<8mg/L and no other pathogenic infection and laboratory evidence for the conditions of 436 cases detected in children with pneumonia.Results Detected a total 125 cases of antibody-positive,the positive detection rate is 37.99%.Of which 103 cases of single virus infection .accounting for 82.4% ,22 cases of mixed infection,accounting for 17.6%.RSV infection on top of the list followed by the rest of IFV,ADV and PIV.Infants of different ages,different seasons of the different types of virus susceptibility.Conclusion Pneumonia in infants were caused by pathogenic bacteria in addition to the virus of a wide range,and the incidence of age,the peak seasons and the clinical manifestations were vary.From an early stage of infection pathogen detection,clearing pathogen type,making the correct diagnosis of pneumonia in the treatment of infants had an important guiding significance.

Objective To study the functional mechanism of Naoxin tong Capsule (Ca psule for cerebral and heart diseases) on a cute coronary syndrome (ACS). Methods Totally 105 ACS p atients diagnosed with coro nary angiography were randomized into a treatment group (55 cases), and a control group (50 cases). The control group was treated routin ely with western medicine while the treatment group treated with Naoxintong Capsule, 2 capsules each time, 3 times a day, in addition to the routine western medicine. Before and 4 weeks after treatment, the serum hypersensitive C-react ive protein (hs-CRP) was measured. Before and six months af ter treatment, changes of carotid intima-media thickness (IMT) and carot id plaque were examined with Color Doppler Ultrasonography. Resu lts Four weeks after treatment, the hs-CRP level in the treatment grou p was significantly lowered than before treatmen t, and the effect was more significant than that of the control group (P

ObjectiveTo observe the clinical effect of sodium aescinate in the treatment of patients with stage Ⅰ - Ⅱ internal hemorrhoids.Methods177 patients with stage Ⅰ - Ⅱ internal hemorrhoids were randomly divided into two groups,the treated group( n =87 ) and the control group( n =90).Patients in the control group were treated with external hemorrhoids suppositories ( 1 per time,bid),while patients in the treated group took sodium aescinate orally(2 per time,Bid).After the 7-day course of treatment,the efficacy of sodium aescinate was determined.ResultsThere was significant difference between the two groups in the total obvious effective rate and the total effective rate(P ＜0.01 ).Compared with the control group,the symptoms of hematochezia and anal pain were more improved in the treated group( P ＜ 0.01 ).There was significant difference between the two groups in the hemorrhoidal mucosa,prolapse,the size of hemorrhoids and total score difference ( P ＜ 0.05 ).The total obvious effective rate and the total effective rate of the treated group were 87.4％ and 95.4％.ConclusionSodium aescinate had better clinical effect in the treatment of patients with stage Ⅰ - Ⅱ internal hemorrhoids.