Objective:To explore the relationship between serum C-X-C motif chemokine ligand 16 (CXCL16) and thioredoxin 80 (Trx80) in patients with Alzheimer′s disease (AD) and cognitive function and prognosis.Methods:A total of 189 AD patients admitted to the Zhangjiakou First Hospital from January 2020 to August 2021 were selected as the AD group, and 110 healthy volunteers who underwent physical examinations in our hospital during the same period were selected as the control group. The serum levels of CXCL16 and Trx80 were detected using enzyme-linked immunosorbent assay (ELISA), and cognitive function was evaluated using the Mini Mental State Examination (MMSE) score. The Spearman correlation method was used to analyze the correlation between serum CXCL16, Trx80 levels and MMSE scores in AD patients. 189 AD patients were divided into poor prognosis group and good prognosis group based on their prognosis. Univariate and multivariate logistic regression methods were used to analyze the influencing factors of poor prognosis in AD patients. Receiver operating characteristic (ROC) curves were used to analyze the predictive value of serum CXCL16 and Trx80 levels for poor prognosis in AD patients.Results:Compared with the control group, the AD group had higher serum levels of CXCL16 and Trx80, and lower MMSE scores (all P<0.05). Spearman correlation analysis showed that the serum levels of CXCL16 and Trx80 in AD patients were negatively correlated with MMSE scores (all P<0.05). After a one-year follow-up, the poor prognosis rate of 189 AD patients was 32.80%(62/189). Univariate analysis showed that age, disease duration, β-amyloid protein (Aβ) 1-40, Aβ 1-42, MMSE score, CXCL16, and Trx80 are associated with poor prognosis in AD patients (all P<0.05). Multivariate logistic regression analysis showed that age, prolonged disease course, and elevated levels of CXCL16 and Trx80 were risk factors for poor prognosis in AD patients (all P<0.05), while an increase in MMSE score was a protective factor ( P<0.05). ROC curve analysis showed that the area under the curve (AUC) of MMSE score, CXCL16, Trx80, CXCL16+ Trx80 combination, and MMSE score+ CXCL16+ Trx80 combination predicting poor prognosis in AD patients were 0.750, 0.763, 0.771, 0.851, and 0.896, respectively. The AUC of the three combination predicting poor prognosis in AD patients was the highest. Conclusions:Elevated serum levels of CXCL16 and Trx80 in AD patients are associated with decreased cognitive function and poor prognosis, and may become auxiliary predictive indicators for poor prognosis in AD patients.

Objective: In order to analyze the characteristics of the outbreak of acute respiratory tract infection in children caused by respiratory syncytial virus(RSV). Methods: The field epidemiological investigations were conducted for the two outbreaks in kindergartens in Hangzhou. Data were analyzed by descriptive method. Samples with positive respiratory syncytial virus nucleic acid were sequenced using PCR. Results: The two outbreaks occurred in kindergartens. There were 21 cases in kindergarten A, lasting 11 days, and 43 cases in kindergarten B, lasting 33 days. The epidemic curve showed a proliferation pattern. The cases were concentrated in nurseries and K1 classes, primarily among children aged 2-4 years. The most common symptoms were fever and cough, mainly upper respiratory tract infection, and no severe cases were found. Upper respiratory tract samples were collected and detected as positive for RSV. Four samples were sequenced and identified as subgroup B. Conclusion During the outbreak of acute respiratory infection in kindergartens, respiratory syncytial virus should be given primary consideration in the process of identification of the outbreak caused by other respiratory infections, and strictly control measures should be taken to reduce the long term impact of the epidemic.

Objective To explore the intervention mechanism of Changzhou Tongbian Formula on functional constipation(FC)combined with depression in rats.Methods A rat model of FC combined with depressive-like behaviors was established by using gastric gavage of berberine hydrochloride and chronic unpredictable mild stress.The model rats were randomly divided into blank group,model group,lactulose group,and Changzhou Tongbian Formula high-,medium-,and low-dose groups,and the intervention was carried out for five weeks.The fecal water content was calculated before and after intervention.The small intestinal propulsion rate was calculated after intervention.The depressive-like behavior levels of rats were evaluated by forced swimming test and sucrose preference test before and after intervention.The colonic mucosal morphology was observed by HE staining.The morphology and number of pyramidal cells in the hippocampal CA1 and DG regions were observed by Nissl staining.The relative protein expression levels of the transient receptor potential vanilloid 4(TRPV4)in colonic tissue,as well as brain-derived neurotrophic factor(BDNF),tyrosine kinase receptor B(TrkB),mitogen-activated protein kinase(MAPK),and cAMP-response element binding protein(CREB)in the hippocampus of rats in each group were detected by Western Blot method.Results Compared with the blank group,the fecal water content of rats in the model group was significantly reduced(P＜0.001),the small intestinal propulsion rate was significantly lower(P＜0.01),the sucrose preference index was significantly decreased(P＜0.001),the number of pyramidal cells in the CA1 and DG regions of the hippocampus was significantly reduced(P＜0.001),and the TRPV4 in the colon and the BDNF,TrkB,MAPK,and CREB protein contents in the hippocampus were all significantly decreased(all P＜0.001).Compared with the model group,the fecal water content of the Changzhou Tongbian Formula high-,midium-,low-dose groups and the lactulose group were significantly increased(P＜0.001,P＜0.01).The small intestinal propulsion rate of the Changzhou Tongbian Formula high-,low-dose groups and lactulose group were significantly increased(P＜0.01,P＜0.05).The sucrose preference indices of the Changzhou Tongbian Formula high-,midium-,low-dose groups and lactulose group were significantly increased(P＜0.01,P＜0.05).There was no abnormality in the colonic histology.The numbers of pyramidal cells in the CA1 and DG regions of the hippocampus of the Changzhou Tongbian Formula high-,midium-,low-dose groups and lactulose group were significantly increased(P＜0.01,P＜0.001).The TRPV4 content in the colon of the Changzhou Tongbian Formula high-,midium-,low-dose groups and lactulose group were significantly increased(P＜0.001),and the BDNF,TrkB,MAPK,and CREB protein contents in the hippocampus were all significantly increased(P＜0.05,P＜0.01,P＜0.001).Conclusion After intervention,Changzhou Tongbian Formula can significantly improve the TRPV4 content in the colon of model rats with the comorbidity of FC with depression,increase the moisture content of feces,promote intestinal peristalsis and improve constipation.Meanwhile,TRPV4 can activate the BDNF/TrkB/MAPK pathway,trigger an increase in downstream CREB,improve neuroplasticity and thus alleviate some depressive-like behavior.