Because of the increasing importance of medical equipment in hospital,medical equipment maintenance division,a department guaranteeing the normal performance of medical equipment,will also act as a vital way.This paper introduces some problems in the management of medical equipment maintenance division and analyses the reasons.Some ways and means are suggested to manage the medical equipment maintenance.

ObjectiveTo observe the effect of acupuncture plus rehabilitation training on the function recovery of patients with post-stroke depression.MethodNinety-eight patients with post-stroke depression were randomized into two groups to receive conventional management and anti-depressants. The control group was intervened by sham-acupuncture plus Fluoxetine tablets and comprehensive rehabilitation training, while the observation group was by acupuncture plus Fluoxetine tablets and comprehensive rehabilitation training. Prior to the intervention and after 8-week treatments, the depression state, motor function and activities of daily life (ADL) were evaluated by using Hamilton Depression Scale (HAMD), Fugl-Meyer Assessment (FMA) and Modified Barthel Index (MBI). The indexes and quality of life were also determined during the 3-month follow-up study.ResultBefore intervention, there were no significant differences in comparing HAMD, FMA and MBI scores (P>0.05). After 8-week treatment, the HAMD, FMA and MBI scores were significantlyimprovedin both groups (P<0.01,P<0.05). After treatment, the HAMD, FMA, and MBI scores in the observation group were significantlydifferent fromthat in the control group (P<0.01,P<0.05). The total effective rate was 90.0% in the observation group versus 79.2% in the control group, and the difference was statistically significant (P<0.05). The 3-month follow-up study showed significant differences in comparing the indexes between the two groups (P<0.05, P<0.01).ConclusionAcupuncture plus rehabilitation training benefits the improvement of depression state, motor function, cognitive function and quality of life in patients withpost-stroke depression, and is worth promotion.

Objective To investigate the effects of neuromuscular electrical stimulation (NMES) combined with swallowing training for relieving dysphagia in stroke patients.Methods A total of 150 chronic stroke patients at least 3 months post-stroke who were afflicted with dysphagia were randomly and evenly divided into a conventional swallowing training group,an NMES group,and an NMES combined with conventional swallowing training group.Prior to and after treatment,surface electromyography (sEMG) signals from the swallowing muscles were detected,swallowing function was evaluated using the standardized swallowing assessment (SSA),their swallowing was studied videofluoroscopically (VFSS),and a swallowing-related quality of life questionnaire (SWAL-QOL) was administered.Results There were significant differences in the maximum amplitude of sEMG signals,and the scores on the SSA,VFSS and SWAL-QOL in both groups between prior to and after treatment.After 4 weeks of treatment,the maximum amplitude of the sEMG signals and all three assessment scores were significantly higher where NMES had been combined with conventional swallowing training group compared with the other two groups.Indeed,there was no significant difference between the group which had received conventional swallowing training and the NMES groups.The analysis of coefficients revealed correlation between sEMG maximum amplitude and the SSA,VFSS and SWALQOL results.Conclusions NMES combined with conventional swallowing training is helpful for improving swallowing function in chronic stroke patients with dysphagia.

Objective To study the therapeutic effects of extracorporeal shock wave therapy (ESWT) on temporomandibular joint disorders (TMDs).Methods Sixty patients with a temporomandibular joint disorder were randomly divided into an ESWT group and a control group,each of 30.Both groups were given routine rehabilitation training,but the treatment group additionally received ESWT for 2 weeks.Fricton's index was used to evaluate temporomandibular joint function.The subjects used a visual analogue scale (VAS) to evaluate their pain levels.The SF-36 scale was applied to assess their life quality.Results After two weeks of treatment,the average assessment score and VAS score had decreased significantly in both groups.After treatment the average scores for mandibular movement,muscle palpation,joint noise and joint palpation,and the palpation,dysfunction and craniomandibular indexes were all significantly lower in the ESWT group than in the control group.Significant differences were also found in the average VAS scores and on the social functioning domain of the SF-36 between the ESWT group and the control group.Conclusion ESWT combined with rehabilitation training can significantly relieve the symptoms and pain of TMDs.

Objective To study the validity and reliability of Tengdao's swallowing standard for stroke pa-tients with dysphagia.Methods A total of 128 patients with postroke dysphagia took the swallowing test and then were divided into three sub-groups.Their scores on Tengdao's evaluation and their fluoroscopy results were analyzed using Spearman's correlation coefficient.Intra-class coefficients (ICCs)were used to examine the intra-rater and in-ter-rater reliability of Tengdao's evaluation.Results TenIgdao's evaluation possessed good validity and reliability.There was a high correlation between the scores in Tengdao's evaluation and fluoroscopy results. Conclusions Tengdao's evaluation is valid,reliable,simple and safe.It can be used in the clinic to evaluate the stroke patients with dysphagia.

To investigate the effects of VitalStim therapy coupled with conventional swallowing training on recovery of post-stroke dysphagia, a total of 120 patients with post-stroke dysphagia were randomly and evenly divided into three groups: conventional swallowing therapy group, VitalStim therapy group, and VitalStim therapy plus conventional swallowing therapy group. Prior to and after the treatment, signals of surface electromyography (sEMG) of swallowing muscles were detected, swallowing function was evaluated by using the Standardized Swallowing Assessment (SSA) and Videofluoroscopic Swallowing Study (VFSS) tests, and swallowing-related quality of life (SWAL-QOL) was evaluated using the SWAL-QOL questionnaire. There were significant differences in sEMG value, SSA, VFSS, and SWAL-QOL scores in each group between prior to and after treatment. After 4-week treatment, sEMG value, SSA, VFSS and SWAL-QOL scores were significantly greater in the VitalStim therapy plus conventional swallowing training group than in the conventional swallowing training group and VitalStim therapy group, but no significant difference existed between conventional swallowing therapy group and VitalStim therapy group. It was concluded that VitalStim therapy coupled with conventional swallowing training was conducive to recovery of post-stroke dysphagia.

Objective To establish an enterovirus 71(EV71) infection model of tree shrew primary renal cells.Methods Tree shrew primary renal cells were obtained by trypsin digestion.After subculture and purification,EV71 virus was used to infect these primary cells.The culture supernatant of these EV71-infected cells was collected for virus titer detection at 1,2,4,6 and 8 days post-infection.The cells were collected for detection of EV71 VP1 protein by Western blot assay.Furthermore,the expression and location of VP1 protein in the infected cells were detected by indirect immunofluorescence assay.Vero cells were taken as positive control to evaluate the infectivity of EV71 virus to tree shrew primary renal cells.Results Morphologically,the cultured cells were proved to be majorly consisted of the primary renal cells after subculture and purification.The obtained primary cells were infected by EV71 virus.The virus titer was up to 1.3×106 TCID 50/mL during 48-96 h post-infection,proving that EV71 virus infected and proliferated in the tree shrew primary renal cells.Western blot showed that the viral VP1 protein was detected from infected primary cells at 2 to 8 d post infection.VP1 protein was also observed in the cytoplasm at 2 to 6 d post infection by indirect immunofluorescence.Compared with Vero cells,the infectivity of EV71 virus to tree shrew primary renal cells and its proliferation were confirmed.Conclusions Based on the successful establishment of cell culture of tree shrew primary renal cells,the infectivity to the obtained cells and proliferation of EV71 virus in the cells are confirmed.The model of EV71 virus-infected tree shrew primary renal cells is initially established.

Objective To explore the proliferation characteristics of primary small intestinal epithelial cells of tree shrews and the characteristics of human rotavirus(RV) G1P[8] infection to these cells,and establish a model of tree shrew primary small intestinal epithelial cells infected with human rotavirus G1P[8].Methods The primary small intestinal epithelial cells were obtained by collagenase Ⅺ and dispase I digestion from tree shrew.After purification and identification,the obtained primary small intestinal epithelial cells were infected with RV.Then,culture supernatants of infected cells were collected every 12 hours after infection.Viral titer and viral load were subsequently determined.Western blot and indirect immunofluorescence observation were used to detect the expression of RV protein VP6 in the primary cells.The infectivity of RV to the tree shrew primary cells was finally evaluated.Results After purification and identification of primary epithelial cells from the tree shrew,high purity above 90% primary tree shrew small intestinal epithelial cells was obtained.These primary small intestinal epithelial cells could be infected with RV virus by comparing the virus infectivity to primary renal cells,HCT116 cells and MA104 cells.The virus titer reached to 2.0×105TCID 50/mL at 72 h after infection.Using Western blot and indirect immunofluorescence observation,the specific viral protein of VP6 was determined to be expressed in the tree shrew primary small intestinal epithelial cells,and were located in the cytoplasm from days 1 to 5.Conclusions The separation,purification and cultivation methods of tree shrew primary small intestinal epithelial cells are successful,and the tree shrew model of RV-infected the tree shrew primary small intestinal epithelial cells is successfully established.

Objective: To investigate the effect of repetitive transcranial magnetic stimulation (rTMS) combined with donepezil on the cognition of persons with post-stroke cognitive impairment (PSCI) and their ability to perform activities of daily living (ADL). Methods: A total of 106 PSCI patients were randomly divided into an observation group and a control group using a random number table. Those in the observation group received 10Hz rTMS (5 seconds on and 25 seconds off for 20 minutes daily) and donepezil daily, 5 days per week for 4 weeks, while those in the control group were provided with donepezil but only sham rTMS on the same schedule. Before and after 4 weeks of treatment, the Montreal cognitive assessment scale (MoCA), the Rivermead behavior memory test (RBMT) and the modified Barthel index (MBI) were used to evaluate the subjects′ cognitive functioning, memory capacity and ADL ability. The latency and amplitude of auditory event-related potential P300 were also assessed using a myoelectric evoked potential apparatus. Results: After the treatment, improvement was observed in all the measurements of both groups. After the treatment, the average MoCA, RBMT and MBI scores, as well as the latency and amplitude of P300 in the observation group were all significantly better than among the control group. Conclusions rTMS can supplement donepezil′s ability to improve the cognition and ADL ability of persons with PSCI. Such therapy is worthy of clinical promotion and application.

ObjectiveTo investigate the effect of kaempferol on the proliferation, migration, invasion, and apoptosis of human hepatoma Bel-7402 cells and related molecular mechanism. MethodsHepatoma Bel-7402 cells cultured in vitro were randomly divided into control group and low-, middle-, and high-concentration experimental groups. The experimental groups were treated with low-, middle-, and high-concentration kaempferol (25, 50, and 100 μmol/L), and the control group was treated with an equal volume of dimethyl sulfoxide. CCK-8 assay was used to observe the effect of kaempferol on the viability of Bel-7402 cells; plate colony formation assay was used to evaluate the effect of kaempferol on cell colony formation ability; wound healing assay and Transwell chamber were used to observe the effect of kaempferol on cell migration and invasion; Western blot was used to measure the expression of apoptosis- and cycle-related proteins. A one-way analysis of variance was used for comparison between multiple groups, and the least significant difference t-test was used for further comparison between two groups. ResultsAfter 24 hours of treatment, the cell viability was 100.00%±2.72% in the control group and 75.70%±2.42%, 62.79%±2.45%, and 43.41%±2.11%, respectively, in the low-, middle-, and high-concentration experimental groups, and compared with the control group, the experimental groups had a significant reduction in cell viability (all P＜0.05). The number of cell colonies was 923.3±35.2 in the control group and 682.7±24.4, 464.0±22.0, and 327.3±14.0, respectively, in the low-, middle-, and high-concentration experimental groups, and compared with the control group, the experimental groups had a significant reduction in cell colony formation ability (all P＜0.05). After 24 hours of treatment, the relative migration rate was 100.00%±1.11% in the control group and 63.33%±1.16%, 51.72%±3.23%, and 37.18%±2.71%, respectively, in the low-, middle-, and high-concentration experimental groups, and the number of transmembrane cells was 212.0±3.0 in the control group and 134.0±2.0, 71.0±2.0, and 34.0±1.0, respectively, in the low-, middle-, and high-concentration experimental groups; compared with the control group, the experimental groups had significant reductions in relative migration rate and number of transmembrane cells (all P＜0.05). After 48 hours of treatment, compared with the control group, the low-, middle-, and high-concentration experimental groups had a significant reduction in the expression of the anti-apoptotic protein Bcl-2 (all P＜0.05), a significant increase in the expression of the pro-apoptotic protein Bax (all P＜0.05), and a significant reduction in the expression of C＜italic/＞yclinD1 (all P＜005). ConclusionKaempferol can inhibit the proliferation, migration, and invasion of human hepatoma Bel-7402 cells and promote the apoptosis of such cells, possibly by regulating the apoptosis proteins Bax and Bcl-2 and downregulating the expression of CyclinD1.