Objective To systematically review the efficacy and tolerance of levofloxacin-based rescue regimens for H.pylori eradication failures.Methods A search of Medline,Embase,Cinahl, CBM-disc was performed.Randomized controlled trials comparing levofloxacin-based triple therapy with bismuth-based quadruple therapy were selected for meta-analysis.Assessment of study quality and ex- tracting data to calculate eradication rate and side effect rate.Results Seven randomized controlled stud- ies met the inclusion and exclusion criteria were recruited.Ten-day levofloxacin-based triple therapy was more effective(86.9% vs 61.8% P

Objective To compare the effect of right ventricular outflow tract (RVOT) and right ventricular apex (RVA) pacing on ventricular systolic synchrony using gated blood pool SPECT (GBPS).Methods A total of 50 patients implanted with pacemaker due to high degree or complete atria-ventricular block were enrolled in the study. Twenty-three patients were RVOT paced ( Group A, n = 23) and 27 were RVA paced (Group B, n=27). Twenty-four patients with malignancy, normal echocardiographic findings and no history of cardiac diseases were scheduled for pre-chemotherapy evaluation of cardiac structure and function and were enrolled as control group ( Group C, n = 24). All patients underwent GBPS imaging and the values of phase angle (PS), mean phase of each wall, standard deviation (SD) of mean phase of each wall, lateral-septal motion delay of left ventricle ( LV Sep-Lat Delay), septal-right ventricular (RV) delay of LV ( LV Sep-RV Delay) and LV-RV Delay were acquired. The parameters of ventricular systolic synchrony among the three groups were compared using one-way ANOVA. Results The mean phase of LV lateral wall in Groups A and B were significantly higher than that in Group C: Group A (120.50 ±40.58) ms; Group B (103.23±28.34) ms; Group C (84.63 ±22.38) ms (F=7.72, P ＜0.05). There was no significant difference between Groups A and B ( t = 1.30, P ＞ 0.05 ). The mean phase of RV in Group A was significantly larger than those in Groups B and C: Group A ( 137.05 ± 39.27) ms, Group B ( 100.85 ± 23.79) ms,Group C (59. 13 ±30.52) ms (F=35.55, P＜0.05). PS, SD and LV Sep-Lat Delay in Groups A and B were significantly higher than those in Group C: (85.73 ± 12.00)°vs (89.85 ± 15.61 )°vs (58.95 ±9.87)°, (27.68±10.66) ms vs (26.15 ±13.02) ms vs (15.63 ±8.35) ms, (25.06±34.23) ms vs (2. 62 ± 60. 31 ) ms vs ( - 23.66 ± 31.39) ms, F = 41.54,8.55,6.81, all P ＜ 0.01 ), however, there was no significant difference between Groups A and B ( t = 0. 68, 0.68, 1.30, all P ＞ 0.05 ). LV Sep-RV Delay and LV-RV Delay were significantly different among the three groups ( LV Sep-RV Delay: Group A (57.60 ±56.77) ms, Group B (6.36 ±61.88) ms, Group C ( -41.89 ±35.78) ms; LV-RV Delay:Group A (47.36 ±42.59) ms, Group B ( 3.08 ± 38.81 ) ms Group C ( - 26.50 ± 20.99 ) ms, F = 20. 32,25.38, both P ＜ 0.01 ). Conclusion Both RVA and RVOT pacing increase the segmental phases detected by GBPS, causing inter- and intra- ventricular asynchrony compared with patients without pacemakers.

Objective To investigate the changes of hydrogen sulfide (H_2S) level in plasma in order to explore the role of H_2S in the development of pulmonary hypertension (PH) secondary to congenital heart disease (CHD).Methods There were 9 CHD patients and 9 normal children in this study. The plasma concentration of H_2S and pulmonary artery pressure (PAP) of each child were measured. Meanwhile, the relationship between H_2S level and PAP was analyzed.Results The plasma level of H_2S in the group of CHD significantly decreased compared with control group (32.13?2.25) ?mol/L vs [(43.69?2.05)?mol/L, P

OBJECTIVETo test the corrosion behavior of three kinds of dental casting alloys and to investigate the effect of the released metal ions on the DNA damage of dog buccal mucosal cells.

METHODSThree kinds of frequently used dental casting alloys were used to make full crowns for dogs. The concentration of the released metal ions was measured after the restoration of 2 weeks, 1 month, 2 months and 3 months. The DNA damage of buccal mucosal cells was studied by the method of SCGE.

RESULTSThe metal ions released from NiCr and NiCrBe were detected in buccal mucosal cells while the amount of the ions released from noble alloy (gold 58%) was too small to be detected. The DNA damage of mucosal cells increased after restoration of NiCr and NiCrBe crowns.

CONCLUSIONThe noble alloy (gold 58%) is most corrosion resistant of the three alloys and has good biocompatibility. The NiCr and NiCrBe are prone to corrode and have cytotoxicity to cells.

Alloys ; Animals ; Corrosion ; Crowns ; DNA Damage ; Dental Alloys ; Dogs ; Gold ; Ions ; Mouth Mucosa

Adolescent ; Adult ; Astrocytoma ; diagnosis ; surgery ; Brain Diseases ; diagnosis ; surgery ; Brain Neoplasms ; diagnosis ; surgery ; Brain Stem ; surgery ; Female ; Follow-Up Studies ; Hematoma ; diagnosis ; surgery ; Humans ; Magnetic Resonance Imaging ; Male ; Microsurgery ; methods ; Middle Aged ; Tomography, X-Ray Computed

The present study is to determine the flavonoid glycosides, terpene lactones, biflavones, gingko acid and procyanidins of ginkgo pollen. UPLC-TQ-MS technology was used for the determination of 24 kinds of resource chemical composition in ginkgo pollen qualitatively and quantitatively. The results shows that the contents of rutin, quercetion 3-O-[4-O-(α-L-rhamnosyl )-β-D-glucoside] and kaempferolis were 120.9, 114.0, 222.1 μg x g(-1). In this paper, the contents of 24 kinds of chemical components of ginkgo pollen were determinated by UPLC-TQ-MS for the first time. This method is simple and quick, which will be benefit for recycling utilization of ginkgo pollen.
Chromatography, High Pressure Liquid ; methods ; Flavonoids ; analysis ; Ginkgo biloba ; chemistry ; Mass Spectrometry ; Pollen ; chemistry ; Proanthocyanidins ; analysis ; Rutin ; analysis ; Terpenes ; analysis

OBJECTIVETo probe the incidence, pathogenesis and clinical characteristics of traumatic subdural hydroma (TSH) developing into chronic subdural hematoma (CSDH).

METHODSWe retrospectively analyzed the clinical data of 32 patients with TSH developing into CSDH and reviewed related literature.

RESULTS16.7% of TSH developed into CSDH in this study. The time of evolution was from 22 to 100 days after head injury. All the patients were cured with hematoma drainage.

CONCLUSIONSTSH is one of the origins of CSDH. The clinical characteristics of TSH developing into CSDH follow that the ages of the patients are polarized, that the evolution often happens in the patients with small chronic hydromas and being treated conservatively, that the patients are usually injured deceleratedly and that the accompanying cerebral damage is often very mild.

Adolescent ; Adult ; Brain Injuries ; complications ; Child ; Chronic Disease ; Female ; Hematoma, Subdural ; etiology ; Humans ; Male ; Middle Aged ; Subdural Effusion ; complications ; etiology

OBJECTIVETo study the clinical features and treatment of cystic acoustic neuroma.

METHODSTwenty-two patients with cystic acoustic neuromas were diagnosed by CT and MRI preoperatively, and the tumors were resected by retrosigmoid approach, and verified by pathological studies.

RESULTSOf the 22 patients, 18 had tumors totally resected (postoperative house Brackman facial nerve grading: grade II in 4 patients, III in 7, IV in 3, V in 2, VI in 2) and 4 had tumors subtotally resected.

CONCLUSIONBecause of its specific clinical features and poor operative results, cystic acoustic neuroma should be regarded as a specific subtype.

Adolescent ; Adult ; Aged ; Cysts ; diagnosis ; surgery ; Female ; Humans ; Magnetic Resonance Imaging ; Male ; Middle Aged ; Neuroma, Acoustic ; diagnosis ; surgery ; Tomography, X-Ray Computed

This study is to investigate the effect of Icogenin on and its mechanism in anti-metastasis of pancreatic cancer BxPC3 cells in vitro. Using transwell assay, the effects of Icogenin on the invasion of BxPC3 cells were measured. The abilities of cell motility and adhesion in BxPC3 cells were detected by MTT assay and wound healing assay, respectively. The MAPK signal pathway protein expressions were analyzed with Western blotting. Also, the activity of MMP2 was observed by zymography assay. Icogenin inhibited the abilities of motility, adhesion and invasion of pancreatic cancer BxPC3 cells in vitro (P < 0.05), in a dose-depended manner, and inhibited the secretion of MMP2 and phosphorylation of ERK. PD98059 and U0126 which were ERK inhibitors could suppress the abilities of invasion and metastasis of pancreatic cancer BxPC3 cells. It is concluded that Icogenin can inhibit the abilities of invasion and metastasis of pancreatic cancer in vitro by inhibiting the secretion of MMP2 and phosphorylation of ERK.
Antineoplastic Agents, Phytogenic ; isolation & purification ; pharmacology ; Cell Adhesion ; drug effects ; Cell Line, Tumor ; Cell Movement ; drug effects ; Dose-Response Relationship, Drug ; Dracaena ; chemistry ; Extracellular Signal-Regulated MAP Kinases ; metabolism ; Humans ; Matrix Metalloproteinase 2 ; secretion ; Mitogen-Activated Protein Kinase Kinases ; metabolism ; Neoplasm Invasiveness ; Pancreatic Neoplasms ; metabolism ; pathology ; Phosphorylation ; Saponins ; isolation & purification ; pharmacology ; Signal Transduction ; Steroids ; isolation & purification ; pharmacology

OBJECTIVETo provide some new evidences for the identification of medicinal materials of Curcuma.

METHODMicroscopic observation was made to characterize the rhizomes of Curcuma.

RESULT AND CONCLUSIONThere were no obvious histological and morphological differences among the rhizomes of Curcuma. The distribution of oil cells and vascular bundles as well as the number and diameter of xylem vessels were considered to be the distinguishing features of their rhizomes.

China ; Curcuma ; anatomy & histology ; classification ; cytology ; Pharmacognosy ; Plants, Medicinal ; anatomy & histology ; classification ; cytology ; Rhizome ; anatomy & histology ; cytology