OBJECTIVETo investigate the effect of nitric oxide (NO) on cytotoxicity of Lomustine (CCNU) in vitro.

METHODSCCNU was used to treat human glioma cell line BT-325 with different concentration of cytokines or NO donors, NO levels was measured by Griess assay and cell survival was evaluated by MTT assay.

RESULT(1) Pretreatment with IL-1 beta and LPS markedly suppressed CCNU cytotoxicity in BT-325 cells with a significant increase in NO production (P<0.05). This function could be inhibited by L-NAME. (2) DETA NONOate suppressed cytotoxicity of CCNU to BT -325 cells in a dose-dependent manner (P<0.05). (3) CCNU co-cultured with SNAP for 24 h showed higher cytotoxic to BT-325 cells(P<0.05).

CONCLUSIONNO partly suppresses cytotoxicity of Lomustine, which might be associated with chemoresistance of BT-325 cells against CCNU in vitro. NO can also slow the degradation of CCNU in water solution.

Antineoplastic Agents, Alkylating ; pharmacology ; Cell Line, Tumor ; Drug Resistance, Neoplasm ; Glioma ; drug therapy ; pathology ; Humans ; Interleukin-1 ; pharmacology ; Lipopolysaccharides ; pharmacology ; Lomustine ; pharmacology ; NG-Nitroarginine Methyl Ester ; pharmacology ; Nitric Oxide ; physiology

OBJECTIVETo explore the mechanisms of muscovite gastric mucosal protective effect.

METHODRat model of chronic gastritis were used. After gastric mucosal injury was induced, the rats were divided into 6 groups and were treated with different drugs. 2 weeks later, the tissue and blood samples were obtained and measured.

RESULTThe general conditions, the observations under macroscopy, microscope and electron microscope of the middle and high dose of muscovite groups resembled those of the normal group. Their PH levels were higher than those of the model group, and the rates of intestinal metaplasia were lower, but the PGE2 level of the middle dose of muscovite group was the highest.

CONCLUSIONMuscovite can be adsorbed on the surface of the gastric mucosa. It has gastric mucosal protective effect by improving excretion of mucus and synthesis of PGE2 in gastric mucosa, restraining gastric acid, reversing of intestinal metaplasia and decreasing inflammation cells.

Aluminum Compounds ; pharmacology ; Animals ; Dinoprostone ; blood ; Gastric Juice ; chemistry ; Gastric Mucosa ; pathology ; ultrastructure ; Gastritis ; blood ; chemically induced ; pathology ; Hydrogen-Ion Concentration ; Materia Medica ; pharmacology ; Microscopy, Electron, Scanning ; Potassium Compounds ; pharmacology ; Protective Agents ; pharmacology ; Rats ; Rats, Wistar ; Silicates ; pharmacology ; Sodium Salicylate

OBJECTIVETo study regulative action of mica monomer granule preparation on gastrin (GAS), somatostatin (SS) and G cells as well as D cells of gastric mucosa in experimental chronic atrophic gastritis (CAG) rat.

METHODCAG rats were treated with mica monomer granule preparation with three different dosages--high, moderate and low level respectively. Changes of blood serum GAS, blood plasma SS and G cells as well as D cells of gastric mucosa in CAG rats were observed and detected with ELISA method, RIA method and immunocytochemistry method.

RESULTMica monomer granule of three different dosages could increase the quantity of G cells as well as D cells of gastric mucosa and the concentration of blood serum GAS and decrease the content of blood plasma SS in CAG rat at different level respectively. It was more effective in high and moderate dosage groups.

CONCLUSIONMica has the pharmacological action of protecting gastric mucosa, promoting the palingenesis of gastric gland and enhancing blood stream of gastric mucosa consequently to abate the inflammation reaction of gastric mucosa. Its effective mechanism is associated with the neuroendocrine regulative mechanism of promoting the secretion of gastric acid and gastric pepsin by increasing the amount of G cells as well as D cells and the concentration of blood serum GAS, and reducing inhibiting action on GAS secretion and enhancing the secretion of GAS by decreasing the content of SS.

Aluminum Silicates ; administration & dosage ; pharmacology ; Animals ; Dose-Response Relationship, Drug ; Gastric Mucosa ; pathology ; Gastrin-Secreting Cells ; drug effects ; Gastrins ; blood ; Gastritis, Atrophic ; blood ; pathology ; Materia Medica ; administration & dosage ; pharmacology ; Rats ; Rats, Sprague-Dawley ; Somatostatin ; blood ; Somatostatin-Secreting Cells ; drug effects

OBJECTIVETo compare a new device (Innocor) for non-invasive measurement of cardiac output (CO) by foreign gas rebreathing method with conventional techniques used in the measurements of cardiac function.

METHODSCardiac outputs measured by Innocor (CO(RB)) were compared with CO obtained by echocardiography (CO(EC)), Swan-Ganz thermodilution (CO(TD)), and left ventricle radiography (CO(LVR)) in 34 patients subjected to cardiac catheterization. Values obtained from the four methods were analyzed by linear regression and paired values were compared by the method of Bland and Altman in SPSS.

RESULTSThere was strong positive correlation (r=0.94) between Innocor cardiac output values and the corresponding values obtained by thermodilution and between CO(EC) and CO(LVR) values. Thermodilution appears to overestimate cardiac output when compared to the values obtained with Innocor by (0.66+/-0.22) L/min (P<0.0001). There was no correlation between data obtained by Innocor and the corresponding CO(EC) and CO(LVR) values.

CONCLUSIONInnocor CO(RB) is an easy, safe and well established method for non-invasive measurement of cardiac output with good prospects for clinical application in heart disease patients.

Adult ; Aged ; Breath Tests ; methods ; Carbon Dioxide ; Cardiac Output ; Female ; Heart Diseases ; diagnosis ; physiopathology ; Heart Function Tests ; methods ; Humans ; Male ; Middle Aged ; Reproducibility of Results ; Sensitivity and Specificity

OBJECTIVETo evaluate the expression and activity of TNF-related apoptosis-inducing ligand (TRAIL) gene expressed from the hTERT promoter on colon cancer cell line HT-29.

METHODSGFP/TRAIL gene expressed from the hTERT promoter was transfected into HT-29 with adenoviral vectors system, expression and apoptosis inducing ability of GFP/TRAIL protein were determined with fluorescence-activated cell sorting (FACS) method.

RESULTSThe expression of GFP gene was 31.4 % and 67.0 % with either hTERT promoter or CMV promoter in DLD1 cells; GFP/TRAIL gene was able to inhibit cell growth (74.2%) and induce apoptosis (25.8%) of HT-29 cells. There was significant difference between Ad/hTERT-gTRAIL and the other two control groups (PBS and Ad/CMV-GFP, P<0.05).

CONCLUSIONThe GFP/TRAIL gene with hTERT promoter transfected by adenoviral vector was successfully expressed in HT-29 cell, which can both inhibit cell growth and induce apoptosis of colon cancer cell line HT-29.

Adenoviridae ; genetics ; Apoptosis ; physiology ; Colonic Neoplasms ; enzymology ; pathology ; Genetic Vectors ; Green Fluorescent Proteins ; biosynthesis ; genetics ; HT29 Cells ; Humans ; Promoter Regions, Genetic ; genetics ; TNF-Related Apoptosis-Inducing Ligand ; biosynthesis ; genetics ; Telomerase ; genetics ; Tumor Cells, Cultured

OBJECTIVETo investigate the value of(99m)Tc-MIBI/(18)F-FDG-dual-isotope simultaneous acquisition (DISA) in diagnosis and treatment of patients with myocardial infarction.

METHODSSixty-three patients with myocardial infarction who underwent DISA before and after treatment were enrolled in the study. All cases were divided into subgroups based on different treatment and myocardial viability: Group A1 (n = 16) with coronary revascularization and viable myocardium, A2 (n = 9) same as A1 but no viable myocardium; B1 (n = 6) with coronary revascularization + stem cell transplantation and viable myocardium, B2 (n = 7) same as B1 but no vital myocardium; C1 (n = 8) with stem cell transplantation and viable myocardium, C2 (n = 17) same as C1 but on viable myocardium. The changes of uptake rate of (99m)Tc-MIBI/(18)F-FDG before and after treatment were analyzed with SPSS 13.0 software.

RESULTThere were statistical significances in DF value of (99m)Tc-MIBI or (18)F-FDG imaging before and after treatment in all groups (P <0.05), except Group A2 (P>0.05). The improvement of blood perfusion and metabolism in cardiac survival groups was more marked than that in non-cardiac survival groups after treatment (P<0.05). Furthermore, Group B1 was superior to Groups A1 and C1; Group B2 was superior to Group A2 and Group C2 (P<0.05 or<0.01).

CONCLUSION(99m)Tc-MIBI/(18)F-FDG DISA can detect myocardial viability and is of value for patients with myocardial infarction to choose appropriate therapeutic strategies. The degree of cardiac improvement after treatment can be evaluated by DISA.

Aged ; Female ; Fluorodeoxyglucose F18 ; Heart ; diagnostic imaging ; Humans ; Male ; Middle Aged ; Myocardial Infarction ; diagnostic imaging ; therapy ; Radionuclide Imaging ; Retrospective Studies ; Technetium Tc 99m Sestamibi ; Treatment Outcome

In 2003, JCI certification was introduced to create our new hospital quality management system. Our department imaging facilities management level and service quality markedly improved through JCI certification and re-evaluation. It played an important role in improving the efficiency and extending the life of medical facilities, reducing maintenance costs.
Certification ; organization & administration ; Hospital Administration ; Nuclear Medicine ; instrumentation ; Quality Assurance, Health Care ; methods ; organization & administration

OBJECTIVETo evaluate the clinical efficacy and safety of Huayu Tongbi Recipe (HTR) combined methotrexate (MTX) in treating refractory rheumatoid arthritis (RRA).

METHODSTotally 167 RRA patients were assigned to the treatment group (73 cases) and the control group (94 cases) according to different therapeutic methods. Patients in the treatment group were treated with HTR combined MTX, while those in the control group were treated with leflunomide (LEF) combined MTX. Clinical signs and symptoms, RF, CRP, ESR, disease activity score 28 (DAS28), and safety indicators were compared between the two groups before treatment, at week 12 and 24 after treatment. The efficacy and safety indices were also evaluated.

RESULTSAt week 12 after treatment the total effective rate was 82.2% (60/73 cases) in the treatment group and 79.8% (75/94 cases) in the control group, showing no statistical difference between the two groups (chi2 = 0.15, P > 0.05). At week 24 after treatment the total effective rate was 78.1% (57/73 cases) in the treatment group and 755% (71/94 cases) in the control group, showing no statistical difference between the two groups (chi2 = 0.15, P > 0.05). There was statistical difference in the total effective rate between week 24 and week 12 in the control group (chi2 = 0.49, P < 0.05). Clinical signs and symptoms, RF, CRP, ESR, and DAS28 were significantly improved in the two groups after 12- and 24-week treatment (P < 0.01). There was no statistical difference in the improvement at week 12 after treatment between the two groups (P > 0.05). There was statistical difference in time of morning stiffness, tender joint numbers, swollen joint numbers, patient global assessment, RF, CRP, and DAS28 at week 24 after treatment between the two groups (P < 0.05). Besides, adverse reactions occurred less in the treatment group than in the control group (P < 0.01).

CONCLUSIONThe efficacy of HTR combined MTX was equivalent to that of LEF (10 mg per day) combined MTX, but with more stable therapeutic effects and less adverse reactions.

Antirheumatic Agents ; pharmacology ; therapeutic use ; Arthralgia ; Arthritis, Rheumatoid ; drug therapy ; Drug Therapy, Combination ; Drugs, Chinese Herbal ; pharmacology ; therapeutic use ; Humans ; Isoxazoles ; Methotrexate ; pharmacology ; therapeutic use ; Phytotherapy ; Treatment Outcome

BACKGROUNDLaparoscopic resection (LAP) for small bowel gastrointestinal stromal tumors (GISTs) is not as common as for stomach. This study aimed to evaluate the safety and efficacy of LAP for small bowel GISTs with systematic review and meta-analysis.

METHODSThe Web of Science, Cochrane Library, Embase, and PubMed databases before December 2016 were comprehensively searched to retrieve comparative trials of LAP and conventional open resection (OPEN) for GISTs of small bowel with a relevance of review object. These researches reported intraoperative and postoperative clinical course (operation time, blood loss, time to first flatus and oral intake, hospital stay, morbidity, and mortality), oncologic outcomes, and long-term survival status.

RESULTSSix studies involving 391 patients were identified. Compared to OPEN, LAP had associated with a shorter operation time (weighted mean difference [WMD] = -27.97 min, 95% confidence interval [CI]: -49.40--6.54, P < 0.01); less intraoperative blood loss (WMD = -0.72 ml; 95% CI: -1.30--0.13, P = 0.02); earlier time to flatus (WMD = -0.83 day; 95% CI: -1.44--0.22, P < 0.01); earlier time to restart oral intake (WMD = -1.95 days; 95% CI: -3.31--0.60, P < 0.01); shorter hospital stay (WMD = -3.00 days; 95% CI: -4.87--1.13, P < 0.01); and a decrease in overall complications (risk ratio = 0.56, 95% CI: 0.33-0.97, P = 0.04). In addition, the tumor recurrence and long-term survival rate showed that there was no significant difference between the two groups of patients.

CONCLUSIONSLAP for small bowel GISTs is a safe and feasible procedure with shorter operation time, less blood loss, less overall complications, and quicker recovery. Besides, tumor recurrence and the long-term survival rate are similar to open approach. Because of the limitations of this study, methodologically high-quality studies are needed for certain appraisal.

OBJECTIVETo evaluate the immediate change of left ventricular systolic performance and asynchronization between simultaneous biventricular pacing and sequential biventricular pacing by tissue synchronization imaging (TSI) and tissue velocity imaging (TVI) in patients with congestive heart failure. The effect of sequential biventricular resynchronization therapy was also observed.

METHODSTen patients with dilated cardiomyopathy who received sequential biventricular resynchronization were enrolled. The TVI and TSI imagings were performed by GE vivid7 with M3S probe. The left ventricular ejection fraction (LVEF), stroke volume (SV), aortic velocity time integral (VTI), left ventricular end diastolic diameter (LVEDd), the standard deviation of the electro-mechanical delay (EMD-SD) of 6 segments and TSI index were measured before implanting of InSync 8042 and 1 month, 3 months, 6 months after implanting respectively.

RESULTSAfter 6 months of implanting, the LVEF, SV and VTI were obviously increased from (22.0 +/- 8.8)% to (38.0 +/- 9.9)%; (36.0 +/- 14.9) ml to (57.0 +/- 15.7) ml; (20.22 +/- 5.72) cm to (26.20 +/- 5.98) cm, P < 0.05, respectively, compared with the before of implanting. The LVEDd was decreased from (6.6 +/- 0.6) cm, to (6.0 +/- 0.9) cm, P < 0.05. The EMD-SD and TSI-index were declined gradually after implanting, which was more evident in the 6 months after implanting, from (83.07 +/- 46.99) ms to (22.37 +/- 16.38) ms; (2.20 +/- 0.36) to (1.50 +/- 0.43), P < 0.05, respectively, but the immediate EMD-SD did not change obviously between simultaneous biventricular pacing and sequential biventricular pacing, whereas, the TSI index and VTI were significantly improved from (1.87 +/- 0.31) to (1.71 +/- 0.29); (22.44 +/- 5.43) cm to (25.44 +/- 5.36) cm, P < 0.05, respectively, in the sequential biventricular pacing.

CONCLUSIONSequential biventricular resynchronization could improve the left ventricular systolic function and synchronism of wall motion in the patients with congestive heart failure, which is more effective than simultaneous biventricular pacing after implanting immediately.

Aged ; Cardiac Pacing, Artificial ; methods ; Echocardiography, Doppler, Color ; Female ; Heart Failure ; diagnostic imaging ; physiopathology ; therapy ; Humans ; Male ; Middle Aged ; Ventricular Function, Left