RESUMO
@#Abstract: Objective This study aimed to investigate the expression of CD73 in colonic tissues in Crohn's disease (CD) and its significance and possible mechanism of action. Methods Thirty male BALB/c mice were randomly divided into normal control group, model group and intervention group. The control group was fed normally, and the model group was treated with TNBS+40% alcohol enema to establish a mouse model of Crohn's disease induced by chronic inflammation. The intervention group was treated with AB-680 intraperitoneally on the second day of each enema based on the model group. Mice body weight, fecal traits and fecal occult blood were recorded for disease activity index (DAI) score of inflammatory bowel disease. The animals were sacrificed at 7th week, their colonic tissues were removed, weighed and measured. The tissue inflammation was observed by standard hematoxylin-eosin (HE) staining. Masson staining was used to measure the area of collagen in colon tissue of mice. CD73 was detected by fluorescence quantitative PCR and immunohistochemistry. The expression levels of TGF-β, TNF-α and IL-6 in colon tissue of mice were determined by ELISA. Results The DAI score was (0.10±0.16) in the control group, (2.80±0.79) in the model group, and (3.07±0.34) in the intervention group. Compared with the control group, the DAI scores of the model and intervention groups were increased significantly (P<0.05). Compared with the model group, the DAI score of the intervention group was significantly increased (P<0.05). HE staining showed that there was no inflammation in the colon of the control group, while the colon of the model group and the intervention group showed typical inflammatory manifestations such as edema and congestion, inflammatory cell infiltration, and mucosal ulcer. The area ratio of collagen in the control group was (4.95±0.82)%, in the model group was (24.62±1.46)%, and in the intervention group was (54.47±2.75)%. Compared with the control group, the area ratio of collagen in the model group and the intervention group was significantly increased (P<0.05). Compared with the model group, the area ratio of collagen in the intervention group was significantly increased (P<0.05). Compared with the control group, the expression of CD73 in colon tissue of the model group and the intervention group was significantly increased (P<0.05). Compared with the model group, the expression of CD73 in colon tissue of the intervention group was decreased (P<0.05). Compared with the control group, the expressions of TGF-β, TNF-α and IL-6 in the model group and the intervention group were significantly increased (P<0.05). Compared with the model group, the expression of TGF-β, TNF-α and IL-6 in the intervention group decreased (P<0.05). Conclusions CD73 is upregulated in colon tissue of CD mice, it can inhibit inflammatory reaction and improve fibrosis by up-regulating TGF-β expression. On the other hand, CD73 can aggravate the inflammatory response in CD intestinal inflammation and fibrosis by up-regulating the expression of IL-6 and TNF-α. Therefore, CD73 may play a bidirectional regulatory role in intestinal inflammation and fibrosis of CD.
RESUMO
Music therapy is beneficial for neurological diseases, especially in slowing down the progression of clinical symptoms in patients. However, it remains unclear to what extent can music therapy may affect patients with Alzheimer's disease (AD). Questions remain on whether music therapy can improve the quality of life (QOL) of AD patients, who are usually with poor QOL owing to the burden of the disease. A search that compared the effectiveness of music therapy to improve the QOL of AD patients was carried out. PubMed, Cochrane library clinical trial database, and WAN FANG database were searched to collect data from randomized controlled trials (RCTs). Two independent researchers extracted data from the selected eligible articles by using a collection form and RevMan5.3 statistical software and applied it for the meta-analysis. We included six RCTs in our meta-analysis. The results showed that compared to the control group, music intervention can significantly increase the score of the QOL-AD scale (MD=5.10, 95%CI: 2.95-7.24, p<0.001) and The World Health Organization QOL Rating Scale Short Form score (MD=5.76, 95%CI: 1.59-9.92, p=0.007). The results suggested that music therapy could improve the QOL for elderly patients with AD. Our findings indicated that music therapy might be considered a non-pharmaceutical therapy for patients with AD in the future.