The changes in the contents of free amino acids in hemolymph of Anopheles stephenst were determined by automatic amino acid analyzer.The changes in hemolymph protein were determined by ultraviolet absorption method.Free amino acids in hemolymph of infected mosquitoes were compared with those in noninfected mosquitoes.At 4 days after blood meal,6 kinds of amino acids decreased markedly,and 5 kinds of amino acids increased markedly; at 7 days after blood meal,4 kinds of amino decreased markedly,while 7 kinds of amino accids increased markedly; at 11 days after cids blood meal,9 kinds of amino acids decreased markedly,and 4 kinds of amino acids increased remarkably.The protein concentration of infected mosquitoes was higher than that of noninfected ones.

Objective To analyze the influencing factors of severe pneumonia in children with mycoplasma pneumonia.Methods A total of 307 children with mycoplasma pneumonia hospitalized in Shanxi Children′s Hospital from March 2021 to February 2022 were se-lected as the study subjects and divided into severe group(200 cases)and non-severe group(107 cases).The differences of the clinical data between the two groups were compared,and a nomogram prediction model was established,and the model was internally validated.Results The severe group had more patients aged≤3 and<6 years,≥6 and≤10 years and autumn and winter(P<0.05).There were significant differences in the course of disease,peak body temperature,abnormal electrocardiogram findings,three concave signs positive,perioral cyanosis,extrapulmonary manifestations,and involvement of other systems between the two groups(P<0.05).There were significant differences between the two groups in 15 indicators including epstein-barr virus infection,antibody titer levels,and C-reactive protein among the laboratory test indicators(P<0.05).The Logistic regression analysis showed that long disease duration and el-evated platelet count,lactate dehydrogenase,and Th cell levels were positively correlated with the occurrence of severe pneumonia,and elevated NK cell levels were negatively correlated with the occurrence of severe pneumonia(P<0.05).The nomogram results showed that the probability of severe pneumonia was 92.8%,the calibration curve was basically consistent with the ideal curve,the area under the re-ceiver operating characteristic curve was0.819,and the decision curve showed a high net benefit value when the threshold probability was 4%-89%.Conclusion The nomogram model is helpful for early detection of severe pneumonia in children with mycoplasma pneumoni-a,and has important significance for preventing the development of severe pneumonia.

Objective:To explore the effect of postoperative delirium risk management in elderly patients with hip fragility fracture based on failure mode and effect analysis (FMEA) theory, and to provide a basis for reducing the incidence of postoperative delirium.Methods:A total of 50 patients admitted to the First Affiliated Hospital of Sun Yat-sen University due to hip fragility fractures from January to December 2019 were selected as the control group, and 50 patients admitted to the First Affiliated Hospital of Sun Yat-sen University for hip fragility fractures from January to December 2020 were selected as the observation group. The control group received routine care, and the observation group implemented risk control intervention measures based on FMEA theory on the basis of the control group. The risk priority number (RPN) value, incidence of delirium, duration of delirium, pain score, satisfaction, and average length of hospital stay were compared between the two groups of patients in each link of failure risk.Results:The RPN values of each link failure risk of the observation group were 100.80 ± 13.39, 103.96 ± 9.96, 103.76 ± 8.04, delirium duration was (36.33 ± 9.07) min, pain scores were 1.86 ± 0.76, 4.16 ± 1.17, average length of stay was (8.98 ± 4.64) days, and incidence of delirium was 6.0% (3/50), the RPN values of each link failure risk of the control group were 274.10 ± 8.48, 291.00 ± 10.10, 287.78 ± 11.64, delirium duration (78.70 ± 20.10) min, pain scores 2.26 ± 1.02, 4.74 ± 1.19, average length of stay was (11.50 ± 7.66) days, and incidence of delirium was 22.0% (11/50). The differences between two groups showed significant differences ( t values were 1.99-93.24, χ2=4.07, P<0.05). The patient satisfaction score of the observation group was 99.36 ± 1.01, which was higher than that of the control group 89.63 ± 2.62, and the difference was statistically significant ( t=24.50, P<0.05). Conclusions:The perioperative implementation of postoperative delirium risk management model based on FMEA theory in elderly patients with hip fractures can reduce the incidence of postoperative delirium, relieve pain, shorten hospital stay, and improve satisfaction degree. It is worthy of clinical promotion.

ObjectiveTo investigate the prevalence and characteristics of depressive symptoms among urban elderly six years after Lushan earthquake in Ya'an， so as to provide references for the mental health interventions for elderly following catastrophic stressful life events. MethodsFrom March to April 2019， a multi-stage stratified cluster random sampling method was adopted to enroll 885 urban elderly people aged 60 and above in Ya'an. A self-compiled questionnaire was used to collect the general demographic information， health-related and disaster-related information， meantime， the elderly was assessed using Geriatric Depression Scale （GDS-30）. Thereafter， univariate and multivariate Logistic regression were applied to explore the influencing factors of depressive symptoms in urban elderly. ResultsA total of 783 valid questionnaires were collected， with a questionnaires response rate of 88.47%. Depressive symptoms were detected in 161 cases （20.56%）. The prevalence of depression showed statistical differences among the elderly of different gender， age， marital status， family relationship， monthly per capita household income， physical exercise status， health status， self-care ability， sleep status and disaster-affected degree （P<0.05 or 0.01）. Logistic regression analysis showed that the urban elderly of the female gender （OR=1.552， P=0.040）， monthly per capita household income of 2000~3000 yuan （OR=6.982， P<0.01）， monthly per capita household income≤2000 yuan （OR=6.857， P<0.01）， lack of physical exercise （OR=1.693， P<0.01）， being less capable of self-care （OR=3.838， P<0.01）， being incapable of self-care （OR=8.547， P<0.01）， complicating multiple curable diseases （OR=4.892， P<0.01） and complicating refractory chronic diseases （OR=5.657， P=0.031） were at high risk of depressive symptoms. The risk of depressive symptoms among the divorced or widowed elderly was greater than that among married elderly （OR=0.063， P<0.01）. ConclusionThe prevalence of depressive symptoms is relatively high among the urban elderly six years after Lushan earthquake in Ya'an， moreover， female gender， low monthly per capita household income， lack of physical exercise， being incapable of self-care and poor health status are risk factors affecting the depressive symptom， while being married is a protective factor.

Objective: To study the effect of stem cell factor (SCF) on the angiogenic ability of cocultured dental pulp stem cells (DPSCs) and human umbilical vein endothelial cells (HUVECs). Methods : This study has been reviewed and approved by the Ethics Committee. The experiment was split into the HUVECs, SCF+HUVECs, DPSCs+HUVECs, and SCF+DPSCs+HUVECs groups. A mixture of SCF and culture medium was used to prepare a mixed culture medium with an SCF concentration of 100 ng/mL. In vitro coculture of DPSCs and HUVECs was performed at a 1∶5 ratio. CCK-8 proliferation assay was used to observe the proliferative capacity of cells in each group on days 1, 3, 5, and 7. Wound healing and Transwell migration assays were used to detect the effect of SCF on cell migration under either direct or indirect coculture conditions, respectively. In vitro angiogenesis experiments were performed to detect the angiogenic capacity of the cells in each group. The vascular endothelial growth factor A (VEGFA) concentration in the cell culture supernatant was detected using ELISAs, and the protein expression levels of CD31, CD34, and VEGFA were detected using Western blot analysis. Results : Wound healing and Transwell migration experiments showed that SCF significantly promoted the migration of cocultured DPSCs and HUVECs (P<0.05). The in vitro angiogenesis experiment showed that the number of branches and the total length of branches of tubular structures in the SCF+DPSCs+HUVECs group were significantly greater than those of the other groups (P<0.05), and the expression levels of the vascular-related proteins CD31, CD34, and VEGFA in this group were greater (P<0.01). Conclusion SCF can enhance the migration and in vitro angiogenesis of cocultured DPSCs and HUVECs.