Objective To introduce a telerehabilitation software system based on the Unified Modeling Language (UML) and Rose.MethodsTeleassesment subsystem was taken as a sample to described case diagram, the collaboration diagram and the class diagram of the system in detail.Results and Conclusion A model of the telerehabilitation software system based on UML is given.

Objective To explore the effects of movement on hippocampal β-amyloid protein ( Aβ ) and amyloid precursor protein (APP) in senescence-accelerated and senescence-prone (SAMP8) mice, and the mechanism by which movement improves learning and memory in mice with a model of Alzheimer's disease. Methods Forty 3-month-old SAMP8 mice were divided randomly into a movement group and a control group. The movement group was trained with a running wheel 10 min daily, 5 days a week in the first month, and 20 min daily in the second month. Morphological changes in the hippocampus were observed under the microscope after HE staining. The expression of Aβ in the hippocampus was detected by immumohistochemical methods and APP mRNA expression was detected by RT-PCR two months later. Results HE staining showed neuron degeneration and death, chromatin condensation and vacuolar degeneration in the hippocampus of the 5-mouth-old SAMP8 mice of the control group. The movement group showed less neuron degeneration and death, and the morphology of most cells was normal The expression of Aβ in the hippocampus of the 5-month-old SAMP8 mice in the movement group was significantly lower than that in the control group. APP mRNA expression levels in the movement group were also significantly lower.Conclusions Movement can delay neuron degeneration and down-regulate Aβ and APP mRNA expression levels in the hippocampus of SAMP8 mice. It may be an important mechanism by which movement improves learning and memory in mice with a model of Alzheimer's disease.

ObjectiveTo evaluate the role of p38MAPK signaling pathway in the up-regulation of heme oxygenase-1 (HO-1) expression in the lung tissue in rats with acute lung injury (AL1) induced by endotoxic shock.MethodsForty-eight male SD rats,aged 8 weeks,weighing 180-200 g,were randomly divided into 4 groups ( n =12 each):control group ( group C ) ; endotoxic shock group ( group LS );endotoxic shock +SB203580 (a specific p38MAPK inhibitor) group (group LSS) and SB203580 group (group SB).Normal saline 0.5ml was injected via the femoral vein in groups C and SB,while LPS 10 mg/kg (in 0.5 ml normal saline) was injected via the femoral vein in groups LS and LSS.When MAP was decreased to 75％ of baseline value,10％ dimethyl sulfoxide (DMSO) 0.1 ml was infused via the femoral vein in groups C and LS,while SB203580 5 mol/kg (in 10％ DMSO 0.1 ml) was infused via the femoral vein at a rate of 0.01 ml/min in groups LSS and SB.Arterial blood samples were obtained at 6 h after LPS or normal saline was given for blood gas analysis and oxygenation index (PaO2/FiO2) was calculated.Then the rats were sacrificed and the lungs were removed for microscopic examination.The pathological changes of the lung were scored.The lung water content was calculated.The MDA content,SOD activity,and expression of HO-1 mRNA and protein,p38MAPK protein and phospharylated p38MAPK (p-p38MAPK) protein were determined.ResultsCompared with group C,the oxygenation index and SOD activity were significantly decreased,the pathological score,lung water content and MDA content were significantly increased,and the expression of HO-1 mRNA and protein and p-p38MAPK protein was significantly up-regulated ( P＜0.05),while no significant change was found in p38MAPK protein expression in groups LS and LSS,and no significant change was found in the indexes mentioned above in group SB (P＞0.05).Compared with group LS,the oxygenation index and SOD activity were significantly increased,the pathological score,lung water content and MDA content were significantly decreased,the expression of HO-1 mRNA and protein was significantly up-regulated,and p-p38MAPK protein expression was down-regulated ( P＜0.05),and no significant change was found in p38MAPK protein expression in group LSS ( P＞0.05).ConclusionThe inhibition of p38MAPK signaling pathway can lead to the up-regulation of HO-1 expression in lung tissues in rats with ALI induced by endotoxic shock.

Objective To compare the performance of 2％ (w/v) agarose gel,2％ (w/v) Metaphor agarose gel and 10％(w/v) nondenaturating polyacrylamide gel in the PCR-restriction fragment length polymorphism (RFLP) analysis of mycobacterial heat shock protein 65 (hsp65) gene.Methods This study included 8 Mycobacteria strains,including clinical isolates and standard strains of Mycobacteria tuberculosis and Mycobacterium intracellulare.Bacterialsuspension of these strains was prepared with the concentration of bacterial cells varying from 10 to 106per milliliter.PCR was performed to amplify the hsp65 gene with a pair of universal primers followed by the digestion of amplicons with two restriction endonucleases,BstE Ⅱ and Hae Ⅲ.Then,the restriction enzyme-digested fragments were subjected to electrophoresis in 2％ agarose gel,2％ Metaphor agarose gel and 10％ nondenaturating polyacrylamide gel respectively.Results As analysis of variance showed,the three gel electrophoresis methods were statistically different in sensitivity for the RFLP analysis of mycobacterial hsp65 gene (F =36.379,P ＜ 0.01).Least significance difference (LSD) procedure revealed that the 2％ agarose gel-based electrophoresis was less sensitive than the 2％ Metaphor agarose gel-and 10％ non-denaturing polyacrylamide gel-based electrophoresis (both P ＜ 0.01),and no significant differences were observed between the 2％ Metaphor agarose gel-and 10％ non-denaturing polyacrylamide gel-based electrophoresis (P ＞ 0.05).Conclusion The 2％ Metaphor agarose gel-and 10％nondenaturating polyacrylamide gel-based electrophoresis methods appear to be more sensitive than the 2％ agarose gel-based electrophoresis method for the PCR-RFLP analysis of mycobacterial hsp65 gene.

Objective To survey the mental health status of rural-to-urban migrant workers in Shanghai.Methods The survey subjects were selected from migrant workers in Shanghai with a multi-stage stratified cluster sampling method.The Symptom Check List ( SCL-90 ) scores were used for evaluation of metal health status.Results The prevalence of mental health problem of 5 626 rural-to-urban migrant workers in Shanghai was 18.8% ( 1 058/5 626 ).The mean total score of SCL-90 was 114.86 ±31.21.Compulsive-obsessive, interpersonal sensitivity, hostility ranked the top three among 9 factors, with scores of 1.37 ±0.43, 1.31 ±0.43 and 1.30 ±0.41 respectively.The mean total scores and scores of 9 factors of rural-to-urban migrant workers in Shanghai were lower than those of Chinese adults norm the mean total scores(129.96 ±38.76) ( t =-15.34, -3.84 --24.08 respectively, all P <0.01) .There were significant differences in mental health among migrant workers with different age , education , marital status , living conditions and occupation (all P<0.05).Conclusion The prevalence of mental health problems in Shanghai rural-to-urban migrant workers is high, with are related to their age, education, marital status, living conditions and occupation.

Objective To evaluate the efficacy and safety of posaconazole for preventing invasive fungal disease (IFD) in the aplastic anemia patients receiving allogeneic hematopoietic stem cell transplantation (HSCT). Methods A total of 46 aplastic anemia patients received allogeneic HSCT. They were treated with oral posaconazole 200 mg, three times a day from HSCT pretreatment to granulocyte recovery after transplantation. G test and GM test were done 1, 2 and 4 weeks after the end of posaconazole treatment, and chest CT scan repeated 4 weeks after the end of posaconazole treatment. Posaconazole prophylaxis was defined as successful if there were no clinical manifestations indicative of fungal infection. Results All the 46 patients experienced neutropenia. The median of absolute neutrophil count (ANC) nadir was 0.02 (0-0.05)×109/L for a median time of 10 (8-19) days. The median duration of posaconazole prophylaxis was 26 (15-41) days. Neutropenic fever was reported in 45 patients, which lasted a median time of 5 (1-13) days. Six patients (13.3％ of the patients with neutropenic fever) failed to respond to the empirical treatment of broad spectrum antibiotics with persistent fever over 7 days. Their treatment was switched to short-term empirical treatment with broad spectrum antifungal agents. However, subsequent G test, GM test and chest CT showed negative results. None of the six patient was consistent with IFD diagnosis. Breakthrough fungal infection was not considered. Oral posaconazole solution was resumed for preventing IFD. G test, GM test and chest CT scan did not show any sign of fungal infection 1, 2 and 4 weeks after the end of posaconazole prophylactic treatment in all the 46 patients, proving the success of oral posaconazole in preventing IFD. Posaconazole was not discontinued due to adverse drug reaction in any patient. Conclusions Posaconazole is effective for preventing IFD in the aplastic anemia patients receiving HSCT with good safety profile and few adverse reactions.

Objective To test the drug susceptibility of 16 Mycobactena tuberculosis isolates from patients with cutaneous tuberculosis,and to provide a basis for the treatment of this entity.Methods Sixteen strains of mycobacterium were isolated from patients with cutaneous tuberculosis.and they were consistently identified as M.tuberculosis by biochemistry and molecular biology.Absolute concentration method was used to test the susceptibility of these isolates to isoniazid.streptomycin.rifampicin and ethambutol.For two strains resistant to streptomycin,PCR and sequencing were performed to analyse the mutation of rpsL gene.Results Out ofthe 16 strains of M tuberculosis.2 were resistant to streptomycin but sensitive to isoniazid,rifampicin and ethambutol,and 14 were sensitive to isoniazid,streptomycin,rifampicin and ethambutol.Sequencing of the rpsL gene revealed a mutation of AAG to AGG at codon 43 in one streptomycinresistant strain and a substitution of CGC bv CAC at codon 54 in another resistant strain.Conclusions In past five years,the resistance ratio of M tuberculosis was low in patients with cutaneous tuberculosis,and streptomycin resistance predominated in these strains.

Objective:To investigate the role of microRNA (miR)-497 in the formation of corneal neovascularization (CNV) induced by alkali burn and its mechanism.Methods:Forty-two wild type (WT) C57BL/6 mice aged 6 to 8 weeks, 42 CRISPR/Cas9 mediated miR-497 knockout (KO) and 42 CRISPR/Cas9 mediated overexpression transgenic (TG) C57BL/6 mice were selected and assigned as WT group, KO group and TG group, respectively.The corneal alkali burn model was established.At 3, 7, 14 and 21 days after modeling, corneal epithelium damage and stromal turbidity were scored according to slit lamp microscopy.The area of neovascularization was measured.Corneal structural changes and expression of inflammatory cells were observed by histopathological staining.The expression of CD31 in corneal tissues was detected by immunohistochemistry staining.The targeted binding relationship between miR-497 and signal transducer and activator of transcription 3 (STAT3) was detected by luciferase reporter assay.The relative expressions of miR-497, vascular endothelial growth factor A (VEGFA), tumor necrosis factor (TNF)-α, interleukin (IL)-6, IL-1β and macrophage inflammatory protein (MCP)-1 mRNA were detected by real-time quantitative PCR.At 14 days following modeling, the expression of STAT3 and p-STAT3 proteins in mice corneal tissues was detected by Western blot.The use and care of animals complied with the ARVO statement.The study protocol was approved by the Ethics Committee of Renmin Hospital of Wuhan University (No.2019K-K010).Results:Corneal injury, inflammatory cell infiltration and CNV occurred in mice cornea after alkali burn.Corneal epithelial injury score, corneal stromal turbidity score and CNV area increased first and reached the peak on the 14th day after modeling, and then decreased.There were significant differences in corneal epithelial injury score, corneal stromal turbidity score, CNV area and number of CD31-positive cells among various time points after alkali burn ( Fgroup=49.19, 34.56, 44.56, 77.56; all at P<0.01; Ftime=51.62, 65.62, 71.32, 46.12; all at P<0.01). Corneal epithelial injury score, corneal stromal turbidity score, CNV area and the number of CD31-positive cells were greater in KO group at various time points than in WT and TG groups, and those in WT group were greater than in TG group (all at P<0.05). In WT STAT3 co-transfected cells, the luciferase activity of the miR-497 group was significantly lower than that of the miR-negative control group and normal control group (both at P<0.05). In mutant STAT3-transfected cells, there was no significant difference in luciferase activity among all groups ( F=0.69, P=0.56). On the 14th day after modeling, the relative expression levels of miR-497 in corneal tissue of WT, KO and TG groups were 0.68±0.11, 0.41±0.06 and 1.05±0.14, respectively, which were significantly lower than 1.00±0.04, 0.56±0.07 and 1.34±0.11 before modeling (all at P<0.01). The relative expressions of STAT3 and p-STAT3 were higher in KO group than in WT and TG groups, and were lower in TG group than in WT group, and the differences were statistically significant (all at P<0.05). The expressions of VEGFA, TNF-α, IL-6, IL-1β and MCP-1 mRNA at various time points after modeling in various groups were significantly higher than before modeling, which were higher in KO group than in WT and TG groups and were lower in TG group than in WT group, and the differences were statistically significant (all at P<0.01). Conclusions:MiR-497 inhibits corneal inflammation and CNV formation induced by alkali burn.It might inhibit the activation of the inflammation signal pathway via targeting STAT3.

Objective:To investigate the inhibitory effect of miR-497 on the corneal epithelial healing in diabetic mice and its possible mechanism.Methods:Forty healthy clean-grade wild-type C57BL/J6 mice were randomly divided into a blank control group and a model control group, with 20 mice in each group.Another 20 CRISPR/Cas9-mediated miR-497 knockout mice and miR-497 overexpression mice were taken as miR-497 knockout and miR-497 overexpression groups, respectively.The diabetes model was constructed by continuous intraperitoneal injection of streptozotocin (STZ) to the mice in model control, miR-497 knockout and miR-497 overexpression groups, and the mice in blank control group were injected with an equal amount of citrate buffer, followed by 8-week normal feeding.After the establishment of diabetes model, the corneal epithelial injury model was further constructed by scraping off part of the corneal epithelium with a central diameter of 2 mm.The corneal epithelial defect area of mice in 0, 12, 24 and 36 hours after corneal epithelial injury was observed by corneal fluorescein sodium staining.The expression of Wnt3a and β-catenin proteins in mice corneal tissues was detected by Western blot.The expression of miR-497 as well as the mRNA expression levels of cell proliferation-associated factor genes CyclinD1, c-Myc, and Ki-67 mRNA was detected by real-time quantitative fluorescence PCR.The targeting relationship between miR-497 and wnt3a was detected by a dual luciferase reporter gene assay.Human corneal epithelial cells (HCEC) were cultured in vitro and transfected with miR-497 mimics, miR-497 mimics negative control, miR-497 inhibitor, and miR-497 inhibitor negative control by Lipo8000 as miR-497 mimics group, mimics negative control group, miR-497 inhibitor group, andmiR-497 inhibitor negative control group, respectively, all of which were cultured in high glucose medium containing 25% glucose.Another two groups of HCEC were taken and cultured in medium containing 5% and 25% glucose as control and high glucose groups, respectively.The cell proliferation viability was determined by CCK8 method.The use and care of animals complied ith the ARVO statement.The study protocol was approved by the Ethics Committee of Renmin Hospital of Wuhan University (2019K-K010). Results:Eight weeks after STZ injection, the blood glucose of mice was significantly higher and the weight was significantly lower in each diabetic model group than those of blank control group (all at P<0.05). At 12, 24 and 36 hours after the corneal epithelial injury, the percentages of corneal epithelial defect area observed by slit-lamp microscopy in model control group were significantly higher than those in blank control group and miR-497 knockout group and lower than those in miR-497 overexpression group, and the differences were statistically significant (all at P<0.05). The relative expressions of wnt3a and β-catenin proteins in the corneal tissues of model control group were significantly lower than those of blank control group and miR-497 knockout group, but higher than those of miR-497 overexpression group, and the differences were statistically significant (all at P<0.05). The relative expressions of CyclinD1, c-Myc and Ki-67 mRNA in model control group were lower than those in miR-497 knockout group, but higher than those in miR-497 overexpression group, and the differences were statistically significant (all at P<0.05). The relative expression of miR-497 in model control group, miR-497 knockout group and miR-497 overexpression group was 1.00±0.02, 0.63±0.06 and 1.48±0.03, respectively, with a statistically significant difference ( F=19.62, P<0.01). The luciferase activity of miR-497-5p mimics group in wild-type wnt3a transfected cells was lower than that of miR-497-5p negative control group and empty vector group, and the differences were statistically significant (all at P<0.05). In the mutant wnt3a transfected cells, there was no significant difference in the luciferase activity among various groups ( F=0.73, P=0.59). The cell proliferation A value of high glucose group was 0.59±0.03, which was significantly lower than 0.59±0.03 of normal control group and 0.88±0.08 of miR-497 inhibitor group, but significantly higher than 0.48±0.11 of miR-497 mimics group (all at P<0.05). Conclusions:The silencing of miR-497 may promote the repair of diabetic corneal epithelial defects by targeting wnt/β-catenin pathway.

A 55-year-old male patient presented with plaques on the face for more than 20 years,and no immunodeficiency diseases were diagnosed.Skin examination showed large areas of pink plaques on the nose,bilateral cheeks and upper oral lips with slight desquamation,verrucous hyperplasia on the dorsal area of the nose,and a bean-sized verrucous protuberance on the tip of the nose.Histopathological examination of the skin lesions revealed pseudoepitheliomatous hyperplasia in the epidermis and hyphae-like structures in the stratum corneum.Moreover,there was diffuse infiltration of inflammatory cells in the dermis,which mainly included neutrophils,lymphocytes,histiocytes and multinucleated giant cells.Periodic acid-Schiff (PAS)-positive spore-like structures were observed in the multinucleated giant cells.Culture of the lesional tissues on Sabouraud dextrose agar (SDA) medium showed grey-brown villous colonies.Microculture on the potato dextrose agar (PDA) medium yielded dark septate hyphae and pycnidia filled with a large number of spores.Microsphaeropsis arundinis was identified by fungal molecular biological techniques.The patient was diagnosed with cutaneous phaeohyphomycosis caused by Microsphaeropsis arundinis.The patient was treated with CO2 laser for the removal of verrucous protuberance on the tip of the nose,and oral itraconazole capsules at a dose of 200 mg twice a day.After 3-month treatment,the skin lesions subsided and the drug was withdrew.During 6-month follow-up,no relapse occurred.