Medical devices are widely used in the treatment of diseases,health care and rehabilitation process as modern science and technology products,and become an important means in the field of modern medicine. How to ensure that medical devices are used safe and effective is the common problem in production,management,use and monitoring.

Objective To assess the clinical efficiency and side effects of topical mometasone furoate aqueous nasal spray for patients with naphazoline-induced rebound rhinitis. Methods A prospective, non-randomized and self-controlled study was applied. A total of 22 patients with naphazoline-induced rhinitis received two spray-puffs of 50 μg mometason furoate twice daily to each nostril in the morning for one week, followed by two spray-puffs of 50 μg mometason furoate once daily to each nostril every morning for another three weeks after withdrawn of naphazoline therapy. Nasal congestion was evaluated by visual an-alogue scale (VAS) recorded before and after treatment. Side effects like nose bleeding and perforation of the nasal septum was detected with rhinoscope. Results The statistical difference of VAS before and after treatment was significant. No adverse reac-tions as nose bleeding and perforation of the nasal septum were observed by the end of treatment. Conclusion It is safe and effective to use mometasone furoate aqueous nasal spray for treating rebound rhinitis induced by misuse of naphazoline nasal drop.

BACKGROUND:Previous experiments have shown that improved platelet-rich plasma can promote the proliferation of human dental pulp cells in a concentration-dependent manner, particularly when the concentration is 10%.
OBJECTIVE:To investigate the effect of platelet-rich plasma at different concentrations on the proliferation and immunogenicity of human bone marrow mesenchymal stem cells.
METHODS:Human bone marrow mesenchymal stem cells from healthy donors were cultured and passaged for 3-4 passages, identified by flow cytometry and differentiation inductions. Platelet-rich plasma samples which were manufactured from the venous blood of the same donor were used for culturing human bone marrow mesenchymal stem cells. The proliferation of human bone marrow mesenchymal stem cells was measured by cellcounting kit-8 method and the growth curves were drawn. The most suitable concentration of platelet-rich plasma was selected to culture human bone marrow mesenchymal stem cells for three generations and the Stro-1 expression rate on the surface of human bone marrow mesenchymal stem cells was determined through flow cytometry.
RESULTS AND CONCLUSION:Platelet-rich plasma at the concentration of 5%-10%evidently promoted the proliferation of human bone marrow mesenchymal stem cells on the 6th and 8th days. The most effective concentration to promote the proliferation was 10%. Platelet-rich plasma at the concentration of 10%stil promoted the proliferation of human bone marrow mesenchymal stem cells on the 10th day, and maintained a better immunogenicity of human bone marrow mesenchymal stem cells compared to the control group. These findings indicate that platelet-rich plasma can promote the proliferation of human bone marrow mesenchymal stem cells in a concentration-dependent manner, and 10%platelet-rich plasma is better to maintain the immunogenicity of human bone marrow mesenchymal stem cells.

AIM To study the effects of matrine (Ma) on the action potential and contractile force in guinea pig papillary muscles. METHODS Conventional microelectrode technique was used to record the fast action potentials (FAP) and slow action potentials (SAP) induced by histamine and BaCl_2 of guinea pig papillary muscles. RESULTS Ma 10,25,50 ?mol?L -1 dose-dependently prolonged the action potential duration at 50%, 90% repolarization (APD_ 50 , APD_ 90 ) and effective refractory period (ERP) of FAP, and lengthened the APD_ 50 , APD_ 90 of SAP induced by histamine and BaCl_2 when perfused with KCl 25 mmol?L -1 Tyrode's solution. The maximal upstroke velocity (V_ max ) of FAP, SAP and contractile force (Fc) were not affected by matrine 10,25,50 ?mol?L -1 . CONCLUSION It was suggested that Matrine could block K + channels in the myocardium.-

OBJECTIVE: To review endonasal endoscopic surgeries aided by Fusion image guided system, and to explore the application value of Fusion image guided system in endonasal endoscopic surgeries. METHOD: Retrospective research. Sixty cases of endonasal endoscopic surgeries aided by Fusion image guided system were analysed including chronic rhinosinusitis with polyp (n = 10), fungus sinusitis (n = 5), endoscopic optic nerve decompression (n = 16), inverted papilloma of the paranasal sinus (n = 9), ossifying fibroma of sphenoid bone (n = 1), malignance of the paranasal sinus (n = 9), cerebrospinal fluid leak (n = 5), hemangioma of orbital apex (n = 2) and orbital reconstruction (n = 3). RESULT: Sixty cases of endonasal endoscopic surgeries completed successfully without any complications. Fusion image guided system can help to identify the ostium of paranasal sinus, lamina papyracea and skull base. Fused CT-CTA images, or fused MR-MRA images can help to localize the optic nerve or internal carotid arteiy . Fused CT-MR images can help to detect the range of the tumor. It spent (7.13 ± 1.358) minutes for image guided system to do preoperative preparation and the surgical navigation accuracy reached less than 1mm after proficient. There was no device localization problem because of block or head set loosed. CONCLUSION Fusion image guided system make endonasal endoscopic surgery to be a true microinvasive and exact surgery. It spends less preoperative preparation time, has high surgical navigation accuracy, improves the surgical safety and reduces the surgical complications.
Cerebrospinal Fluid Leak ; surgery ; Endoscopy ; instrumentation ; Fibroma, Ossifying ; surgery ; Humans ; Nasal Surgical Procedures ; methods ; Neurosurgical Procedures ; Nose ; pathology ; Papilloma, Inverted ; surgery ; Paranasal Sinuses ; pathology ; Retrospective Studies ; Sinusitis ; surgery ; Sphenoid Bone ; pathology ; Surgery, Computer-Assisted ; methods

Objective To investigate the difference of amplitude of low-frequency fluctuation (ALFF) and fraction of amplitude of low-frequency fluctuation(fALFF) between Alzheimer's disease (AD)patients and normal aging (NA) controls by voxel-based analysis.Methods Thirty-one AD patients and 44 NA controls were enrolled in the study.Blood oxygen level dependent functional (BOLD) EPI data were obtained during resting-state by using 32-channel head coil.Data were realigned,normalized and then smoothed with 8 mm FWHM kernel.Resting-state fMRI toolkit(version 1.6) was used to generate ALFF and fALFF images.Independent two sample t-test was performed with SPM5 to compare ALFF and fALFF of AD and NA controls.Pearson correlation analysis was performed to examine the relationship between MMSE score and ALFF,fALFF parameters.The significance level was set to be uncorrected O.001 on the voxel level and 0.05 on the cluster level.Results AD patients showed increased ALFF in left temporal lobe (0.492 ±0.119) and right cingulated cortex (0.434 ± 0.093) of AD patients,which were 0.443 ± 0.068 and 0.380 ±0.081 in NA controls (t =2.658,2.227,P ＜ 0.05).Decreased fALFF was found in bilateral posterior cingulate cortices (1.167 ± 0.203) and increased fALFF was found in bilateral temporal lobes (left 1.226 ±0.127,right 1.146 ±0.214) with left side dominance,which were 1.453 ±0.269,1.134 ±0.088,1.014 ± O.132 in NA controls (t =5.001,3.695,3.285,P ＜ 0.05).Bilateral temporal ALFF and fALFF correlated with MMSE positively (r =0.768—0.909,P ＜ 0.05) with left dominance.Conclusion AD patients showed increased resting-state functional MRI changes correlated with MMSE score in the temporal lobes with left dominance,which indicated left temporal lobe may be the best location for the observation of disease progression in AD patients.

BACKGROUND:Previous experiments have shown that modified platelet-rich plasma activated by liquid nitrogen freezing and thawing can promote the proliferation of human bone marrow mesenchymal stem cells and dental pulp stem cells in a concentration-dependent manner. OBJECTIVE:To investigate the effect of modified platelet-rich plasma at different concentrations on the proliferation of dental pulp stem cells from human exfoliated deciduous teeth. METHODS:Platelets were selected and harvested by automatic blood cellanalyzer, and then activated by liquid nitrogen freezing and thawing.α-MEM served as basal medium. Different concentrations of modified platelet-rich plasma (2%, 5%, 10%, 20%) or 10%fetal bovine serum were added, respectively. The difference in cellproliferation was observed. RESULTS AND CONCLUSION:Modified platelet-rich plasma at different concentrations could promote the proliferation of dental pulp stem cells from deciduous teeth. The effects of 2%modified platelet-rich plasma and 10%fetal bovine serum on promoting the proliferation of dental pulp stem cells from deciduous teeth were similar. These results indicated that 2%modified platelet-rich plasma could promote the proliferation of dental pulp stem cells from deciduous teeth, and substitute for fetal bovine serum in the amplification of dental pulp stem cells from deciduous teeth in vitro.

Objective:To study the effects of ICA on HepG2.2.15 cell proliferation, their sensitivity to the lysis by CD3AK effector cell, to investigate the reversal action of ICA on hepatocarcinoma cells from immune escape through Fas/FasL pathway.To provide the theoretical and experimental bases for ICA development.Methods:MTT assay was used to detect cell proliferation and CD3AK cells cytotoxicity activity;flow cytometry assay was used to examine expression of surface molecules and apoptosis rate of HepG2.2.15 cells.Results:When HepG2.2.15 cells line was treated with 50 ?g/ml ICA,a significant reduction of the rate of cell proliferation was observed. Inhibition rate at 48h was 22.04%,and 29.68% at 72h.Kinetic study showed that inhibition of cell proliferation was time dependent (P0.05).ICA could inhibit apoptosis of Jurkat cells induced by HepG2.2.15 cells. In the co-culture system of HepG2.2.15 cell and Jurkat T cell, apoptosis ratio of Jurkat cell was reduced from 46.66% to 18.20% by ICA (P

Objective:To investigate the effect of modified plateletrich plasma(mPRP)on the osteogenic differentiation of stemcells from human exfoliated deciduous teeth(SHED).Methods:mPRP at 1%,2%,5%,10% and FBS at 10% were added to thecultured SHED of passage 4,respectively.The influence of mPRP on alkaline phosphatase(ALP)activity was evaluated using ALPkit.RUNX2 and osteocalcin mRNA expression in the treated cells were examined by realtime PCR.Results:mPRP enhanced ALPactivity in the SHED,and the effect of mPRP was more obvious at 2%.Treatment of the cells with 2% mPRP upregulated the mRNAexpressions of RUNX2 and osteocalcin.Conclusion:mPRP can promote the osteogenic differentiation of SHED.

As the spreading of AIDS over the world, to research effective anti-HIV drugs is required. The review contains the process of discovering targets for anti-HIV especially entry/infuse, reverse transcriptase, protease and integrase, and describes the effective component of traditional Chinese drugs for these targets and the anti-HIV drugs being researched or used in clinic.
Anti-HIV Agents ; therapeutic use ; Drugs, Chinese Herbal ; therapeutic use ; HIV ; drug effects ; HIV Infections ; drug therapy ; virology ; Humans