Objective: To investigate the association between uric acid level and elevated blood pressure among children and adolescents in Guangzhou, so as to provide a scientific basis for prevention and control of hypertension in the pediatric population. Methods: From March to December 2019, using stratified cluster random sampling, 3 626 children and adolescents aged 6-17 years without elevated blood pressure at baseline were recruited from 6 primary and secondary schools in Guangzhou. Serum uric acid levels were measured at baseline, and divided into four groups ( Q1-Q 4) based on age and sex specific quartiles for analyses. Two waves of follow up were carried out from October 2020 to May 2021 and from October 2021 to May 2022, respectively. Multilevel robust Poisson regression was used to evaluate the association between uric acid level and elevated blood pressure among children and adolescents. The additive interaction between high uric acid level and sugar sweetened beverage (SSB) intake on elevated blood pressure was assessed by stratification analysis and calculation of the relative excess risk due to interaction (RERI). Results: A total of 1 131 new cases of elevated blood pressure were identified during the two follow ups, with an incidence density of 130.5 cases 1 000 person years. Multilevel robust Poisson regression analysis showed that after adjusting for confounders such as gender, age and annual family income, compared with those in the uric acid Q 1 level, the risk of elevated blood pressure in individuals in the Q 4 level increased by 25% ( RR=1.25, 95%CI =1.08-1.44), and the risk of elevated systolic blood pressure increased by 20% ( RR=1.20, 95%CI =1.05-1.36) (both P <0.05); no statistical association was observed between uric acid and elevated diastolic blood pressure (all P >0.05). In the stratified analysis, the statistical associations of uric acid Q 4 level with elevated blood pressure ( RR=1.34, 95%CI =1.13-1.58) and elevated systolic blood pressure ( RR=1.33, 95%CI =1.14-1.55) were only observed in the group with SSB intake ≥ 250 mL/week (both P <0.05). The RERI values for the effect of uric acid Q 4 and Q 3 levels with SSB intake ≥ 250 mL/week on elevated systolic and diastolic blood pressure were 0.29 and 0.44 (both P <0.05). Conclusions High uric acid level is a risk factor for elevated blood pressure among children and adolescents, with a predominant effect on systolic blood pressure. High uric acid level and SSB intake synergistically promote the increase of blood pressure of children and adolescents.

Objective To explore the serial mediating roles of physical functional impairment and cognitive function between chronic comorbidity and depression in older adults.Methods Based on 5773 older adults with at least one chronic disease from the 2020 China Health and Retirement Longitudinal Survey as study subjects,Spearman correlation analysis was used to explore the correlation between chronic comorbidities,physical functional impairment,cognitive function,and depression in older adults,and serial mediating effects were analyzed using the model 6 in Process 3.3 of SPSS.Results 4465 older adults(77.34%)had chronic comorbidities,and the direct effect of chronic comorbidities on depression in older adults was significant,with an effect size of 1.737(95%CI:1.373-2.101),the separate mediating effect of physical functional impairment was significant,with an effect size of 0.535(95%CI:0.432-0.642);the separate mediating effect of cognitive function was not significant,with an effect size of-0.037(95%CI:-0.086 to 0.011);the serial mediating effect of physical functional impairment and cognitive function was significant,with an effect size of 0.027(95%CI:0.018 to 0.037).Conclusion Chronic comorbidity promotes the development of depression in older adults and indirectly influences the development of depression through physical functional impairment and poorer cognitive function.Therefore,in order to avoid the onset or exacerbation of depression in older adults with chronic diseases,it is important to enhance the ability of this group to care for themselves in daily life as well as to promote the recovery of cognitive function,especially in older adults with chronic comorbidities.

Objective To evaluate the clinical efficacy of Dangui Siwei Yin cell-wall broken powder in the treatment of degenerative lumbar spinal stenosis(DLSS)with qi deficiency and blood stasis syndrome.Methods A randomized controlled trial was conducted on 72 patients with qi deficiency and blood stasis-typed DLSS admitted to Guangdong Second Traditional Chinese Medicine Hospital(Huangpu Hospital)from November 2023 to January 2025.Patients were randomly divided into a cell-wall broken powder group and a traditional midicinal slice group(36 cases each)using a random number table method.Both groups received conventional western treatment(oral administration of Etoricoxib Tablets and Mecobalamin Tablets).Additionally,the cell-wall broken powder group was treated with Dangui Siwei Yin cell-wall broken powder,while the traditional midicinal slice group received traditional decoction of Dangui Siwei Yin.Both groups underwent a 1-week treatment course.Changes in Visual Analogue Scale(VAS)of pain scores,Oswestry Disability Index(ODI)scores,and Japanese Orthopaedic Association(JOA)lumbar function scores were observed before and after treatment.Clinical efficacy and medication safety were evaluated.Results(1)After one week of treatment,the total effective rate was 88.89％(32/36)in the cell-wall broken powder group and 75.00％(27/36)in the traditional midicinal slice group.The intergroup comparison(by chi-square test)showed that the efficacy in the cell-wall broken powder group was superior to the traditional midicinal slice group(P＜0.05).(2)After treatment,VAS and ODI scores were significantly decreased in both groups(P＜0.05),while JOA scores significantly increased(P＜0.05).The cell-wall broken powder group demonstrated superior improvements in VAS and ODI reduction and JOA elevation compared to the traditional midicinal slice group(P＜0.05).(3)The adverse reaction rate was 8.33％(3/36)in the cell-wall broken powder group and 11.11％(4/36)in the traditional midicinal slice group,with no statistically significant difference(P＞0.05).Conclusion Compared with traditional midicinal slice,Dangui Siwei Yin cell-wall broken powder exhibit better efficacy in alleviating low back and leg pain and improving lumbar function in qi deficiency and blood stasis-typed DLSS patients.This study provides evidence-based medical support for the clinical application and further development of cell-wall broken powder formulations in traditional Chinese medicine.

Objective To explore the serial mediating roles of physical functional impairment and cognitive function between chronic comorbidity and depression in older adults.Methods Based on 5773 older adults with at least one chronic disease from the 2020 China Health and Retirement Longitudinal Survey as study subjects,Spearman correlation analysis was used to explore the correlation between chronic comorbidities,physical functional impairment,cognitive function,and depression in older adults,and serial mediating effects were analyzed using the model 6 in Process 3.3 of SPSS.Results 4465 older adults(77.34%)had chronic comorbidities,and the direct effect of chronic comorbidities on depression in older adults was significant,with an effect size of 1.737(95%CI:1.373-2.101),the separate mediating effect of physical functional impairment was significant,with an effect size of 0.535(95%CI:0.432-0.642);the separate mediating effect of cognitive function was not significant,with an effect size of-0.037(95%CI:-0.086 to 0.011);the serial mediating effect of physical functional impairment and cognitive function was significant,with an effect size of 0.027(95%CI:0.018 to 0.037).Conclusion Chronic comorbidity promotes the development of depression in older adults and indirectly influences the development of depression through physical functional impairment and poorer cognitive function.Therefore,in order to avoid the onset or exacerbation of depression in older adults with chronic diseases,it is important to enhance the ability of this group to care for themselves in daily life as well as to promote the recovery of cognitive function,especially in older adults with chronic comorbidities.

Objective:To construct a prediction model for the emergency volume of the psychiatric hospital, and analyze the changes of psychiatric emergency visits, so as to provide references for optimizing the allocation of emergency service resources.Methods:This study extracted data of the visit time of emergency patients, etc from the information system of a certain psychiatric hospital from 2018 to 2023. The monthly emergency visits (emergency volume) from 2018 to 2022 were used to construct the autoregressive integrated moving average model (ARIMA), and the monthly emergency volume from 2023 was used to validate the predictive performance of the model.Results:After model construction and screening, seasonal ARIMA (0, 1, 0) (1, 1, 1) 12 was determined as the optimal model. The predicted values of the model were in good agreement with the actual values, with an average relative error fluctuation of 1.6% to 26.8% and an average absolute error fluctuation of 9 to 159 person-time. Conclusions:The seasonal ARIMA model could accurately predict the emergency volume of a certain psychiatric hospital and provide references for human resource allocation and emergency response. However, this prediction model was suitable for short-term forecasting. If long-term forecasting was needed, continuous data fitting was necessary to ensure the effectiveness of the prediction.

Objective To evaluate the feasibility of confirming syphilis reactive blood donors.Methods The serum of donors with anti-TP reaction by ELISA were confirmed by treponema pallidum particle agglutination(TPPA)and Western blotting(WB).The results of two confirmation methods that were negative,suspicious or inconsistent were followed up and compared.At the same time,the analytical index values of the screening reagent A,B and C and their combinations were e-valuated and compared using the the receiver operating characteristic curve(ROC curve)based on the results of the two confirmation methods.Results The positive rate of 223 ELISA anti-TP reactive samples(including 124 double-reagent ELISA reactive samples and 99 single-reagent ELISA reactive samples)was 57.40%confirmed by TPPA and 38.57%con-firmed by WB(89.52%vs 17.17%by TPPA and 52.42%vs 21.21%by WB for double-reagent and single-reagent ELISA reactive samples).The confirmed negative rate of TPPA was 35.43%and that of WB was 42.60%(6.45%vs 71.72%of TP-PA and 29.84%vs 58.59%of WB for double-reagent and single-reagent ELISA reactive samples).According to Kappa test,the confirmed results between the two methods were not consistent,especially for those single-regent ELISA reactive sam-ples.Thirty six cases were followed up successfully,of which 17(47.22%)confirmed changes in the test results but the changes were irregular.Based on the confirmed results of TPPA and WB,the ROC curve analysis was performed on the anti-TP screening S/CO values of double-reagent ELISA reactive samples.When combining ELISA screening reagents as A/B and A/C,the optimal S/CO values of reagent A were 1.815,5.73 and 10.205,16.165,respectively.Conclusion TPPA and WB have poor consistency in the confirmation of ELISA anti-TP reactive blood samples,and the outcome of follow-up confirmation is unclear.The S/CO threshold of ROC curve is affected by the combination of confirmatory screening reagents,and it is difficult to confirm the results of ELISA anti-TP reactive blood donors.

Purpose To investigate the expression and prog-nostic value of programmed death-ligand 1(PD-L1),CD 163 and CD8 in lymphocyte-predominant breast cancer(LPBC),and to analyze the expression of PD-L1,CD 163 and CD8 in primary cancer and corresponding lymph node metastatic cancer.Meth-ods LPBC with complete pathological data were selected.Im-munohistochemical EnVision method was used to detect the ex-pression of PD-L1,CD163 and CD8 in 82 cases of primary cancer and 23 cases of corresponding lymph node metastatic cancer.Their relationships with clinicopathological features and prognosis were analyzed,and the difference of expression be-tween primary cancer and lymph node metastatic cancer.Results The positive rates of PD-L1 in tumor cell(TC)and immune cell(IC)in primary cancer were 25.61％(21/82)and 79.27％(65/82),respectively.The positive rates of TC-PD-L1 in grade Ⅱ and grade Ⅲ were 18.00％(9/50)and 37.50％(12/32),respectively.The expression of TC-PD-L1 was corre-lated with the histological grade(P＜0.05).The positive rates of IC-PD-L1 in tumor maximum diameter ≤2 cm and＞2 cm were 66.67％(18/27)and 85.45％(47/55),respectively.The positive rates of IC-PD-L1 in Ki67≤20％and＞20％were 60.00％(12/20)and 85.48％(53/62),respectively.The ex-pression of IC-PD-L1 was related to tumor maximum diameter and Ki67(P＜0.05).TC-PD-L1 expression was positively correlated with CD8+intratumoral tumor-infiltrating lymphocytes(iTILs)density(r=0.277,P＜0.05),and IC-PD-L1 expression was positively correlated with CD163(r=0.259,P＜0.05).High expression of CD163 was significantly correlated with shorter DFS(P＜0.05).Between primary cancer and lymph node metastatic cancer,the co-expression rates of TC-PD-L1 and IC-PD-L1 were 82.61％(19/23)and 47.82％(11/23),respectively,and the difference was not statistically significant(P＞0.05).There were statistically differences of CD163 expression and CD8+iTILs be-tween primary cancer and lymph node metastatic cancer(P＜0.05).Conclusion PD-L1 expression in primary cancer is as-sociated with poor clinicopathologic features,and high expression of CD163 suggests poor prognosis.There are differences in tumor immune microenvironment between LPBC primary cancer and lymph node metastatic cancer,and re-evaluation of PD-L1 of lymph node metastatic cancer may provide valuable guidance for clinical immunotherapy.

Objective To forecast the national nursing human resources situation and provide policy basis for promoting the development of the nurse team.Methods The registered nurse numbers,the total population,the registered(assistant)physician numbers,and the bed numbers in medical and health institutions(in thousands)were selected from 2013 to 2023,and the bed-to-nurse ratio,doctor-to-nurse ratio,and the number of nurses per thousand population were calculated and analyzed to study the changes in national nursing human resources over the past decade.A grey GM(1,1)model was established to predict the number of nurses per thousand population from 2024 to 2030.Results ① The number of nurses per thousand population has increased year by year in the past decade,with an average annual growth rate of 11.38％;② The precision of the grey GM(1,1)model for the number of nurses per thousand population is precise(α=-0.065 9,b=2.014 1,C value=0.003 3,P=1.000),with high fitting degree.And the predicted number of registered nurses per thousand population from 2024 to 2030 are 4.291,4.584,4.896,5.229,5.585,5.965,and 6.371 respectively.Conclusion The national nursing human resources allocation has been optimized in the past decade,and the GM(1,1)model predicts that the national nursing human resources change is also in an upward trend.However,relevant policies still need to be formulated to improve the bed-to-nurse ratio and doctor-to-nurse ratio.

Objective To forecast the national nursing human resources situation and provide policy basis for promoting the development of the nurse team.Methods The registered nurse numbers,the total population,the registered(assistant)physician numbers,and the bed numbers in medical and health institutions(in thousands)were selected from 2013 to 2023,and the bed-to-nurse ratio,doctor-to-nurse ratio,and the number of nurses per thousand population were calculated and analyzed to study the changes in national nursing human resources over the past decade.A grey GM(1,1)model was established to predict the number of nurses per thousand population from 2024 to 2030.Results ① The number of nurses per thousand population has increased year by year in the past decade,with an average annual growth rate of 11.38％;② The precision of the grey GM(1,1)model for the number of nurses per thousand population is precise(α=-0.065 9,b=2.014 1,C value=0.003 3,P=1.000),with high fitting degree.And the predicted number of registered nurses per thousand population from 2024 to 2030 are 4.291,4.584,4.896,5.229,5.585,5.965,and 6.371 respectively.Conclusion The national nursing human resources allocation has been optimized in the past decade,and the GM(1,1)model predicts that the national nursing human resources change is also in an upward trend.However,relevant policies still need to be formulated to improve the bed-to-nurse ratio and doctor-to-nurse ratio.

【Objective】 To evaluate the infection status and potential infectivity of Treponema pallidum specific antibody (anti-TP) reactive blood donors, and to provide reference for the key prevention and screening of TP under the current screening strategy. 【Methods】 From February to October 2021, 133 blood donors were tested reactive by two different anti-TP ELISA kits (77 cases were dual-reagent reactive and 56 cases were single-reagent reactive). Syphilis specific IgM antibody (TP-IgM) and IgG antibody (TP-IgG) were detected by Western blot (WB), and TRUST was conducted. The results were analyzed. 【Results】 Of the 133 samples, 24 (18.05%) were positive for TP-IgM, 40 (30.07%) were positive for TP-IgG, and 3 (2.26%) were positive for TRUST. Among them, 12 cases (15.58%) were TP-IgM positive and 40 cases (51.95%) were TP-IgG positive in 77 cases of double reagent reactivity, and 12 cases (21.43%) were TP-IgM positive and 0 was TP-IgG positive in 56 cases of single reagent reactivity. There was no significant difference in the positive rate of TP-IgM between the two groups (P>0.05), while the positive rate of TP-IgG in donors with double reagent reaction was higher than that in donors with single reagent reaction (P<0.05). In addition, among the 133 anti-TP-reactive blood donors, 15 cases were positive for single TP-IgM (11.28%, accounting for 62.50% of the total positive number of TP-IgM, a total of 12 cases of TP-IgM positive among the single reagent reactive patients, and all of them were TP-IgM positive and TP-IgG negative); 30 cases were positive for single TP-IgG (22.56%, accounting for 75.00% of the total positive number of TP-IgG). There were 55 cases (41.35%) who were negative for TP-IgM and TP-IgG, and 8 cases (6.02%) were both positive. 【Conclusion】 The TP-IgM positive donors in anti-TP reactive blood donors are infectious, but the positive rate is not high. Those with single reagent reactivity and single TP-IgM positive are prone to miss detection, which should be controlled. Those who were both TP-IgM and TP-IgG negative and those who were only TP-IgG positive may be false reactivity and the phenomenon of lifelong antibody expression. It is suggested to consider adding TP-IgM detection as a measurement index for permanent deferral of both reagents.