Objective To explore the action mechanism and clinical significance of CD4+CD25+ regulatory T (Treg) cells in the development of atopic dermatitis (AD). Methods Peripheral blood mononuclear cells (PBMC) were obtained from 46 patients with AD and 20 normal human controls. Flow cytometry was performed to detect the number of CD4+CD25+ Treg cells, real-time fluorescence PCR assay to measure the Foxp3 mRNA level in PBMC, ELISA to determine the serum levels of IL-2, IL-4, IL-10 and IFN-γ. Results A statistical decrease was observed in the percentages of peripheral CD4+CD25+ Treg cells among CD3+ T cells and CD4+ T cells in AD patients compared with normal controls (t' = 3.775, 4.533, both P＜ 0.01 ), and in the percentage of peripheral CD4+CD25+ Treg cells among CD3+ T cells in patients with acute AD compared with those with chronic AD (t = 2.217, P ＜ 0.05), but no significant difference was noted between patients with acute AD and those with subacute AD or between those with subacute AD and those with chronic AD in the percentage of peripheral CD4+CD25+ Treg cells among CD3+ T cells (t = 1.558, 0.49, both P ＞ 0.05). The mRNA level of Foxp3 in PBMC from AD patients was statistically decreased compred with that from normal controls (z =-2.368, P ＜ 0.05 ). The count of CD4+CD25+ Treg cells was positively correlated with serum levels of IL-2 and IL-10 (r = 0.512, 0.494, both P ＜ 0.05), but had no significant correlation with serum levels of IL-4 and IFN-γ (r = -0.110, -0.237, both P ＞ 0.05). Conclusions In AD patients, there is a decrease in the count of CD4+CD25+ Treg cells and in the level of Foxp3 mRNA, which may suppress the proliferation of and secretion of Foxp3 mRNA by Th2 cells, lead to Th2 predominance, participate in the development of AD.

Objective:To study the effect of sorafenib and prophylactic transarterial chemoembolization (TACE) for prevention of postoperative relapse in patients with liver cancer combined with microvascular invasion (MVI) after using radical hepatectomy.Methods:A retrospective analysis was performed on 137 cases that underwent radical hepatectomy at the First Affiliated Hospital of Zhengzhou University from August 2015 to January 2018. Clinical data of liver cancer patients with MVI were diagnosed by postoperative pathology. General data of the three groups were analyzed. Kaplan-Meier was used to calculate the tumor-free survival rate. COX proportional hazards-model was used to analyze the independent risk factors for postoperative recurrence of liver cancer with MVI recurrence. Counting data was compared by x 2 test between groups, and log-rank test was used to compare the tumor-free survival rates. Results:A, B, and C groups had 49, 36, and 52 cases, respectively. General clinicopathological data of the three groups were not statistically significant. The postoperative tumor-free survival rates at 1-, 2-, and 3-years were 71.4%, 51.0%, 38.8%, 86.1%, 75.0%, 66.7%, and 82.7%, 75.0%, and 59.6% respectively in A, B, and C groups. Multivariate Cox proportional-hazards regression model showed that patients' age ( HR = 0.622, P = 0.046), maximum tumor diameter ( HR = 1.661, P = 0.033), prophylactic TACE ( HR = 0.544, P = 0.019), and postoperative use of sorafenib ( HR = 0.419, 0.222, 0.791, P = 0.007) were independent risk factors for postoperative recurrence of liver cancer with MVI. Conclusion:Sorafenib or prophylactic TACE use can significantly reduce the recurrence rate within 3 years after radical surgery in patients with liver cancer who were confirmed to have MVI by postoperative pathology.

ObjectiveTo investigate the level of positive aspects and current status of their general self-efficacy among the family caregivers of disabled elderly,and to explore the correlation between them. MethodsBy convenience sampling, a cross-sectional survey was conducted among 120 family caregivers of disabled elderly in Fangzhuang Community, Heping Li Community, Tiancun Community and Peking Union Medical College Hospital from April to June 2018 by Self-designed General Questionnaire,Activities of Daily Living Scale(ADL), General Self-Efficacy Scale(GSES) and Positive Aspects of Caregiver(PAC) to investigate the current status of the caregivers' self-efficacy and positive aspects and analyze the correlation between them using statistical software. ResultsThe 120 caregivers of disabled elderly got (27.98±7.82)points from GSES, which is at a moderate level; the caregivers achieved (35.60±8.16)points from PAC among which the score of"self-affirmation"dimension was (19.93±4.51) points, and "life prospects" dimension was (15.68±4.24)points;the total score of GSES and PAC as well as all dimensions of the family caregivers of disabled elderly showed a moderate level of positive correlation (r=0.524, 0.435, 0.541;P＜0.01). ConclusionsThe family caregivers of the disabled elderly had positive aspects which correlated positively with their general self-efficacy. Medical staff can take corresponding measures to improve the family caregivers' self-efficacy and positive aspect so as to improve the quality of their care and as well as the life quality of the elderly.