There are a large number of disabled people in China, but there are few facilities specially designed to provide convenience for special people in tourism public auxiliary services. How to strengthen humanized design and let special people enjoy special tourism public auxiliary services is a topic worth studying in the current construction of public facilities in China. To solve this problem, this paper designs and builds a sign language recognition system for hearing impaired people based on artificial intelligence deep learning technology. In this paper, a 3D convolution neural network sign language recognition method based on multi-modal homologous data is proposed. By constructing a dual-row depth neural network, the distinguishing spatio-temporal features of dynamic sign language are extracted and learned from infrared images and contour images layer by layer, and finally the two independent data classification results are fused by fusion strategy. The sign language recognition system designed and built in this paper has been verified in practical application, which can recognize and display the sign language in the camera in real time, and has strong practicability.
Abstract Understanding is emerging about microRNAs as mediators in the regulation of white adipose tissue (WAT) and obesity. The expression level of miR-199a in mice was investigated to test our hypothesis: miR-199a might be related to fat accumulation and try to find its target mRNA, which perhaps could propose strategies with a therapeutic potential affecting the fat storage. C57/BL6J mice were randomly assigned to either a control group or an obesity model group ( n =10 in both groups). Control mice were fed a normal diet (fat: 10 kcal %) ad libitum for 12 weeks, and model mice were fed a high-fat diet (fat: 30 kcal %) ad libitum for 12 weeks to induce obesity. At the end of the experiment, body fat mass and the free fatty acids (FFAs) and triglycerides (TGs) in WAT were tested. Fat cell size was measured by hematoxylin-eosin (H&E) staining method. The fat mass of the model group was higher than that of the control group ( P <0.05). In addition, the concentrations of the FFAs and TGs were higher ( P <0.05) and the adipocyte count was lower ( P <0.05) in the model group. We tested the expression levels of miR-199a and key adipogenic transcription factors, including peroxisome proliferator activated receptor gamma2 (PPARγ2), CCAAT/enhancer binding proteins alpha (C/EBPα), adipocyte fatty acid-binding protein (aP2), and sterol regulatory element binding protein-1c (SREBP-1c). Up-regulated expression of miR-199a was observed in model group. Increased levels of miR-199a was accompanied by high expression levels of SREBP-1c. We found that the 3’-UTR of SREBP-1c mRNA has a predicted binding site for miR-199a. Based on the current discoveries, we suggest that miR-199a may exert its action by binding to its target mRNA and cooperate with SREBP-1c to induce obesity. Therefore, if the predicted binding site is confirmed by further research, miR-199a may have therapeutic potential for obesity. Abbreviations WAT, white adipose tissue; PPARγ2, peroxisome proliferator, activated receptor γ2; C/EBP αCCAAT/enhancer binding proteins α; aP2, adipocyte fatty acid-binding protein; SREBP-1c, sterol regulatory element binding protein-1c; HFD, high-fat diet.
Understanding is emerging about microRNAs as mediators in the regulation of white adipose tissue (WAT) and obesity. The expression level of miR-199a in mice was investigated to test our hypothesis: miR-199a might be related to fat accumulation. And we try to find its target mRNA, which perhaps could propose strategies with a therapeutic potential affecting the fat storage. C57/BL6J mice were randomly assigned to either a control group or an obesity model group (n = 10 in both groups).
INTRODUCTION: Irisin is a newly discovered myokine, which is involved in energy metabolism and associated with "browning" of the white adipose tissue, obesity, diabetes mellitus and metabolic syndrome. It is still uncertain that whether irisin level is associated with coronary artery disease. The purpose of this study was to explore the relationship between irisin levels and coronary artery disease.EVIDENCE ACQUISITION: A search of PubMed, MEDLINE, Elsevier Science Direct, Springer, Web of Science and China National Knowledge Infrastructure (CNKI) for studies published from 2000 to 2017 was undertaken to identify relevant studies. Case-control studies that reported the association between irisin levels and coronary artery disease were included. Methodological quality of the studies was assessed according to the Newcastle-Ottawa Scale. Random-efforts models were used to analyze the weighted mean difference (WMD) and its 95% confidence interval (CI). Subgroup analysis was performed to explore potential sources of heterogeneity.EVIDENCE SYNTHESIS: From 741 studies, 7 case-control studies involving 867 patients and 700 controls were selected for meta-analysis based on our inclusion and exclusion criteria. In these case-control studies, irisin concentrations were lower in coronary artery disease patients compared with healthy controls. In the meta-analysis, the pooled data indicated that irisin levels were -18.10 ng/mL ([95% CI: -35.53 to -0.68 ng/mL]; P<0.05) lower in patients with cardiovascular disease or atherosclerosis than healthy controls.CONCLUSIONS: This study confirmed that irisin levels were significantly lower in patients with coronary artery disease.
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