Construction of a rapid depression screening model for blood donors in Guangzhou based on decision tree / 中国输血杂志

【Objective】 To investigate the prevalence of depression in blood donors and analyze the related factors, so as to develop a rapid depression screening model for blood donors. 【Methods】 A total of 13 015 street whole blood donors in Guangzhou Blood Center during May to August, 2020 filled in an anonymous e-questionnaire, including social demography information and the Patient Health Questionnaire-9 before donation. The cut-off value for detecting depression was 10. Logistic regression by SPSS 26.0 was used to analyze depression related factors. 2-level decision tree with 30/10 as the minimum number of cases in parent/child node, 10-fold cross validation was used to cut items of PHQ-9 to form the depression screening model. 【Results】 364 out of 13 015 (2.80%) street whole blood donors reported a score ≥ 10. Donors with 18-29 years old (P <0.05), unmarried (P<0.05), less than 50 000 RMB household income per year (P< 0.05) were more prone to depression. 81.96% donors in "<10 scores" group, while 3.85%donors in "≥ 10 scores" group were in two terminal nodes formed by Item-6, 2 and 4 of PHQ-9. After verification by the 10 fold crossover method, the estimated misclassification risk of the model was 1.7%. 【Conclusion】 The screening prevalence of depression based on PHQ-9 in Guangzhou blood donors was 2.8%(95% CI: 2.52%-3.09%) . Donation frequency was not related to depression. A rapid and efficient depression screening model for blood donors based on item-6, 2 and 4 of PHQ-9 was developed.

Developing long- and short-run nexus between industrial growth, economic growth, and trade balance of China.

The study examined the short- and long-run nexus between industrial growth, economic growth, oil production, inflation, and trade deficit of China, using quarterly data from 1995Q1 to 2020Q4. We used autoregressive distributed lag model (ARDL), after affirmation of long-run relationship and uni-directional causality. To examine short-run dynamics, an error correction model (ECM) was specified, and Granger causality test was conducted to find the direction of causality between variables. Empirical findings confirmed cointegration between trade deficit and industrial growth, economic growth, inflation, and oil production. Further, uni-directional causality between trade deficit and all independent variables was found, running from independent variables towards trade deficit. Results revealed that growth of industrial production index play a substantial role in determining trade balance of China. The study further confirms the effectiveness of economic growth and inflation for trade deficit, in both short run and long run. The findings are consistent with extant literature. On the policy front, a couple of suggestions including trade policies with special focus on industrial reforms, and loose monetary policies are made on the basis of derived conclusions.

Demographic characteristics of whole blood donors aged 56 to 60 in Guangzhou / 中国输血杂志

【Objective】 To study the demographic characteristics of whole blood donors aged 56 to 60 in Guangzhou, so as to provide reference for smooth implementation of the recruitment and management of elderly blood donors in Guangzhou. 【Methods】 The data of whole blood donors, aged 56 to 60, in Guangzhou Blood Center from July 1, 2016 to June 30, 2021 were retrospectively analyzed, and such characteristics as the number of blood donations, gender, donation frequency, donation volume, occupation and educational background were analyzed. 【Results】 A total of 3 996 blood donors aged 56 to 60, including 3 013 males and 983 females, gave 14 416 donations during July 1, 2016 to June 30, 2021, with the proportion of 400 mL specification at 64.1% (6 999/10 918) of males, which was significantly higher than that of females 57.7% (2 017/3 498). The number of blood donors had been decreasing year by year, but the ratio of men to women was stable.The education background of blood donors were mainly high school, junior college, and undergraduate education, accounting for more than 60% in total, and the proportion of undergraduate and graduate degree trended to grow. Staff, workers, medical staff and civil servants were the majorities, and the proportion of medical staff trended to grow. 【Conclusion】 Male blood donors aged 56 to 60 in Guangzhou showed stronger intention to donate blood, and the proportion of blood donors with better education and medical staff was on the rise.

Overview of researches on the status quo of blood donation service in China: based on CiteSpace knowledge mapping analysis / 中国输血杂志

【Objective】 To analyze the researches on blood donation service during 2001 to 2020, explore the development of blood donation service in China and discover the hot spots and weaknesses in current research, aimed to provide reference for future research. 【Methods】 The research team, institutions and hotspots of related literature from China National Knowledge Infrastructure (CNKI) were analyzed using CiteSpace. 【Results】 After analyzing the selected 969 relevant literature, it is concluded that there is few communication between the core author teams. The inter-agency research network is not mature enough, and the cooperation and communication between institutions need to be further strengthened. The high-frequency keywords were volunteer donors, satisfaction, blood donation response and humanized service. Quality control in the blood donation service process, maintenance and recruitment of regular blood donors, and the establishment and improvement of voluntary blood donation teams were research hot spots. 【Conclusion】 China has made fruitful achievements in the research of blood donation service after 20 years of development. The key point of future research is to strengthen the cooperation between different research teams, integrate the first-line practice of blood collection and supply, as well as explore the individualized and localized theory of blood donation service.

Development and application of blood donor role identity scale (BDRIS) / 中国输血杂志

【Objective】 To further determine the relationship between blood donor role cognition and blood donation behavior, then prepare of blood donor role identity scale(BDRIS). 【Methods】 The preparation of the scale was divided into five stages. It includes literature retrieval, expert interview, construction of the basic framework of the scale, scale test and statistical index test. The study focused on items selection, dimensions identification, measurement reliability, content and structural validity. 【Results】 The blood donor role identity scale consisted of 35 items. Exploratory factor analysis divided the items into six common factors, including role identity, role expectation, current situation of blood collection and supply, role conflict, external reward and blood donation experience. The α of scale was 0.840. 【Conclusion】 The reliability and validity of the scale meet the basic measurement requirements, and the framework of the blood donor role scale is basically formed. It can be used as one of the means to explore the ways and mechanisms of the role identity of blood donors in blood donation behavior.

Spatial distribution analysis of blood donors′ intended donation addresses based on ArcGIS / 中国输血杂志

【Objective】 To apply the spatial distribution analysis based on ArcGIS software, which has been applied widely in other fields, so as to analyze the intended locations for whole blood donation. 【Methods】 After a random stratified sampling was conducted among blood donors in the 17 donation sites during August 1st, 2021- July 30th, 2022, their intended blood donation locations were collected by an e-questionnaire. Addresses of donors′ intended donation locations were derived for GCJ-02 coordinates form and transformed by pandas module of Python to WGS84 coordinates, which further loaded to ArcGIS Arcmap module using Grouping Analysis for 17 median centers. The addresses of 17 blood donation sites in Guangzhou Blood Center were transformed to WGS84 coordinates and loaded to ArcGIS Arcmap module using the same methods for 3 ring buffer analysis. The criterion for judging whether the two were " matched" was whether the intended blood donation sites were covered by or adjacent to the 3 ring buffer zone of the existing blood donation sites. 【Results】 Of the 17 potential sites obtained from the spatial distribution analysis of 40 523 valid addresses of donors, 8 sites were covered or adjacent to the buffer of the existing donation sites, while the other 9 sites were far away from the existing donation sites. 【Conclusion】 By analyzing the spatial distribution of donors′ intended donation addresses, we can find out the service needs of donors for donating blood conveniently, which can provide basis for further blood donation service optimization.

How first-time platelet donors become regular donors: the influencing factors / 中国输血杂志

【Objective】 To analyze the related factors affecting first-time platelet donors to become regular donors in Guangzhou in 2018, so as to provide reference for the retention of platelet donors. 【Methods】 The data of 4 361 first-time platelet donors in Guangzhou in 2018, including age, gender, initial donation unit, time for the primary and secondary donation were collected. The relevant factors affecting first-time blood donors to become regular donors were analyzed by Logistic regression analysis. 【Results】 Among the influencing factors, first-time donors returned in the first month were more likely to become regular donors (5.569 times that of those did not return)(OR 95% CI: 4.748~6.533, P<0.05). First-time donors who aged 45~60, and initially donated 2 units were more likely to become regular donors than those aged 18~24(1.857 times) (OR 95% CI: 1.413~2.441, P<0.05), and those initially donated only one unit (1.695 time) (OR 95% CI: 1.486~1.933, P<0.05). 【Conclusion】 The returning in the first month, age and initial donation units predict long-term commitment for first-time donors. Encouraging first-time platelet donors to return within 1 month is more likely to convert them into regular blood donors.

Research progress in judgment criteria for reduction of femoral intertrochanteric fractures / 中华创伤骨科杂志

With accelerated aging process of the population, femoral intertrochanteric fractures have gradually become another major social health problem in China. Internal fixation is still the gold standard treatment for the fractures. Fracture reduction is the first step of the treatment and also the first element that affects the treatment efficacy. It is still controversial in clinical practice how to evaluate the quality of fracture reduction during internal fixation of the fractures. This article systematically expounds and analyzes the 7 systems of judging criteria for the reduction of intertrochanteric fractures from the aspects of fracture alignment, fracture apposition, difference in judgment criteria, and difference in imaging methods, in order to provide a reference for reaching consensus and improving curative effects.

Expression of Rad51 and the histo-morphological evaluation of testis of the sterile male cattle-yak.

Meiotic recombination is key to the repair of DNA double-strand break damage, provide a link between homologs for proper chromosome segregation as well as ensure genetic diversity in organisms. Defects in recombination often lead to sterility. The ubiquitously expressed Rad51 and the meiosis-specific DMC1 are two closely related recombinases that catalyze the key strand invasion and exchange step of meiotic recombination. This study cloned and sequenced the coding region of cattle-yak Rad51 and determined its mRNA and protein expression levels, evaluated its molecular and evolutionary relationship as well as evaluated the histo-morphological structure of testes in the yellow cattle, yak and the sterile cattle-yak hybrid. The Rad51 gene was amplified using PCR, cloned and sequenced using testicular cDNA from yak and cattle-yak. Real-time PCR was used to examine the expression levels of Rad51/DMC1 mRNA in the cattle, yak and cattle-yak testis while western blotting, immunofluorescence and immunohistochemistry were used to assess the protein expression and localization of Rad51/DMC1 protein in the testicular tissue sections. The results revealed that the mRNA and protein expression of Rad51 and DMC1 are extremely low in the male cattle-yak testis with a corresponding higher incidence of germ cell apoptosis. There was also thinning of the germinal epithelium possibly due to the depletion of the germ cells leading to the widening of the lumen area of the cattle-yak seminiferous tubule. Our findings provide support for the hypothesis that the low expression of Rad51 and DMC1 may contribute to the male hybrid sterility in the cattle-yak.

Impact of industrial agglomeration on environmental pollution from perspective of foreign direct investment-a panel threshold analysis for Chinese provinces.

In the course of China's rapid economic development, the coexistence of industrial development and dominant industrial agglomeration (AGG), along with growing environmental problems, has attracted widespread attention from scholars. Although the linear relationship between the two has been analyzed in depth in the research literature, a concomitant phenomenon, i.e., the gradual expansion in the scale of foreign direct investment (FDI), has been overlooked. By employing threshold panel regression model, this paper attempts to construct a theoretical model with embedded AGG and FDI, and incorporates other factors affecting environmental pollution (POL). For examining the mechanism of AGG on POL, we proposed a testable theoretical hypothesis, and conducted an empirical study by combining panel data of POL and AGG at the provincial level in China. The measurement index of a control variable was changed to check the robustness of our results, and the coefficient sign of each explanatory variable was not changed, confirming the robustness of main results. Overall, AGG improves regional POL, but the impact of FDI is stage-specific and roughly there are three stages. Specifically, the positive effect of AGG on POL is strong when FDI is at a low level. When the level of FDI crosses the first threshold and continues to rise, the positive effect of AGG on POL reaches its strongest; until the second threshold is crossed, the positive effect of AGG starts diminishing slowly. Concluding this, for promoting economic development and environmental protection in the region in parallel, government and enterprises should prioritize the increment in FDI, with an equalization of levels of AGG and FDI, in order to enhance the improvement effect of AGG on POL.

Deregulation of CLTC interacts with TFG, facilitating osteosarcoma via the TGF-beta and AKT/mTOR signaling pathways.

Although the treatment of osteosarcoma has improved, the overall survival rate of this common type of osseous malignancies has not changed for four decades. Thus, new targets for better therapeutic regimens are urgently needed. In this study, we found that high expression of clathrin heavy chain (CLTC) was an independent prognostic factor for tumor-free survival (HzR, 3.049; 95% CI, 1.476-6.301) and overall survival (HzR, 2.469; 95% CI, 1.005-6.067) of patients with osteosarcoma. Down-regulation of CLTC resulted in tumor-suppressive effects in vitro and in vivo. Moreover, we found that CLTC was transcriptionally regulated by a transcription factor-specificity protein 1 (SP1), which binds to the CLTC promoter at the -320 to -314-nt and +167 to +173-nt loci. Mechanistic investigations further revealed that CLTC elicited its pro-tumor effects by directly binding to and stabilizing trafficking from the endoplasmic reticulum to the Golgi regulator (TFG). Importantly, overexpression of TFG rescued both the tumor-suppressive effect and inhibition of the TGF-ß and AKT/mTOR pathways caused by CLTC down-regulation, which indicated that the activity of CLTC was TFG-dependent. Immunohistochemistry analysis confirmed that CLTC expression was positively correlated with TFG expression. These findings collectively highlight CLTC as a new prognostic biomarker for patients with osteosarcoma, and the interruption of the SP1/CLTC/TFG axis may serve as a novel therapeutic strategy for osteosarcoma.

The correlation of developing capability of autistic children with social and linguistic parenting behaviors / 中华行为医学与脑科学杂志

Objective:To investigate the correlation between social and linguistic parenting behaviors and developing capability of children with autism.Methods:From August 2020 to December 2020, the social and linguistic parenting behaviors of 302 parents of children diagnosed with autism were investigated in the outpatient department of the hospital.Meanwhile, the data of Gesell scale for children, the social life competence scale for infant and junior middle school students, the autism behavior checklist and the Cancy autism behavior scale were collected.SPSS 20.0 software was used for statistical analysis.Independent sample t test and analysis of variance were used to compare the social and linguistic parenting behaviors of different parents.Pearson correlation analysis was used to analyze the correlation between the social and linguistic parenting behaviors of parents and children's developmental ability and symptom severity. Results:There were no statistically significant differences in children's social and language development parenting behavior between father and mother ( t=1.033, P=0.303; t=-0.312, P=0.756). There were no statistically significant differences in children's social and linguistic parenting behaviors between fathers of different age groups ( F=1.425, P=0.244; F=1.127, P=0.345). Among mothers of different age groups, the social parenting behaviors of <30 years old and 30-34 years old groups were significantly better than those of 35-39 years old group ( F=3.374, P=0.019; LSD: P=0.010, P=0.006). Among fathers, the social parenting behavior( F=4.346, P=0.008; LSD: P=0.020, P=0.001) and social + linguistic parenting behavior in the graduate group and college group were significantly better than those in the high school/vocational group( F=3.965, P=0.012; LSD: P=0.020, P=0.002). Among mothers, the social parenting behavior ( F=2.812, P=0.040; LSD: P=0.008, P=0.023, P=0.009), linguistic parenting behavior ( F=3.769, P=0.011; LSD: P=0.010, P=0.025, P=0.001), social + linguistic parenting behavior ( F=3.654, P=0.013; LSD: P=0.005, P=0.015, P=0.002) in graduate and above groups were significantly better than those in college group, high school/vocational group, junior high school and below groups.The scores of social parenting behavior(40.72±6.80), linguistic parenting behavior(27.20±5.22), and social + linguistic parenting behavior(67.92±11.10) were significantly correlated with children’s fine motor(61.75±16.41)( r=0.193, P=0.001; r=0.153, P=0.009; r=0.190, P=0.001), cognition(68.28±16.83)( r=0.231, P=0.000; r=0.186, P=0.001; r=0.229, P=0.000), language(53.01±18.55) ( r=0.262, P=0.000; r=0.305, P=0.000; r=0.304, P=0.000) and social self-care(61.44±17.85) ( r=0.264, P=0.000; r=0.238, P=0.000; r=0.274, P=0.000). The scores of linguistic parenting behavior and social + linguistic parenting behavior were correlated with children's social life ability (8.65±0.89) ( r=0.142, P=0.046; r=0.140, P=0.049). There was no significant correlation between social parenting behavior, linguistic parenting behavior, social + linguistic parenting behavior and the scores of ABC scale (50.53±21.39) ( r=-0.089, P=0.336; r=-0.115, P=0.215; r=-0.107, P=0.250) and CABS scale (13.96±4.54) ( r=-0.050, P=0.490; r=-0.059, P=0.411; r=-0.058, P=0.421). Conclusions:The social and linguistic parenting behaviors are related to their age and educational level, and are significantly correlated to developing capability of children with autism, but have nothing to do with the severity of children's symptoms.

Influencing factors related to repeated blood donation among college students in Guangzhou / 中国输血杂志

【Objective】 To investigate the positive and negative influencing factors concerning repeated blood donation among college students, in order to provide reference for the maintenance and retention of college student blood donors. 【Methods】 The questionnaire was made in terms of motivators, barriers and social supports related to repeated blood donation based on relevant literature at home and broad and the results of semi-structured interviews. From November to December 2020, 1 200 college donors from 10 colleges in Guangzhou were selected. The results of questionnaires were analyzed with Chi-square test and multivariate logistic regression by SPSS 26.0. 【Results】 Good for health, shortage of blood, favorable policy concerning blood donation, and blood need of family members were the four motivators of repeated blood donation. The inconvenience of blood donation location and dissatisfaction with blood donation souvenir were the two barriers. In addition, encouragement from classmates and curiosity were the two motivators, and harmful to health was the barrier in first-time college blood donors. 【Conclusion】 Blood banks should strengthen the publicity of blood related knowledge, preferential policies concerning blood donation, and status of blood collection and supply, etc, make full use of the influence of peers and the favorable environment of colleges to form a right atmosphere for blood donation, and enhance the reputation and service of blood banks.

Effects on the recruitment of inactive and lapsing blood donors, Questionnaire study based on motivators and deterrents / 中国输血杂志

【Objective】 To explore the effect of questionnaires on the re-recruitment of lapsed blood donors, and to ensure the retention of regular blood donors for blood supply in blood stations. 【Methods】 Blood Donation Motivation Questionnaire and Blood Donation Deterrents Questionnaire were designed for inactive and lapsing blood donors to inquire the motivation of the latest blood donation, such as "blood donation can save lives" and the reasons for no longer participating in blood donation, such as "there are no blood donation sites nearby", respectively. 13 093 blood donors with donation frequency ≥3 times and last donation during January 1 to May 17, 2018 in Guangzhou were selected as subjects. Text messages containing the links to the correspondent electronic questionnaires were sent to intervention group 1 (n=4 364) to fulfill the Blood Donation Motivation Questionnaire and intervention group 2 (n=4364) to fulfill Blood Donation Deterrents Questionnaire from May 18 to 25, 2020. None questionnaire was issued to the control group (n=4 365). The re-donation rates in the three groups within 2 months after the questionnaire delivery were analyzed by intention to treat (ITT) analysis and average treatment effect (ATT) estimation. 【Results】 The response rate of valid questionnaires was 5.422% (710/13 093), of which 7.424% (324/4 364) were in intervention group 1 and 8.845% (386/4 364) in intervention group 2. The collected questionnaire showed that the score of "blood donation can save lives" was the highest (2.31±0.79)in intervention group 1, and the score of "no blood donation site nearby" was the highest (2.31±0.80). in intervention group 2.2 months of observation showed that the re-donation rate was similar among all three groups by ITT analysis (Ps>0.05). ATT estimation results showed that the re-donation rates of intervention group 1 and intervention group 2 were 5.56%(18/324) and 3.11%(12/386), respectively(P<0.05). 【Conclusion】 Motivation questionnaire is a simple and convenient way to remind blood donors who have multiple donations to donate blood again.

How apheresis donation effects peripheral blood parameters in plateletpheresis donors: Propensity Score Matching method / 中国输血杂志

【Objective】 To investigate the changes of platelet, white blood cell, red blood cell counts, Hb and PCV before and after plateletpheresis donation. 【Methods】 10 444 platelet donors who donated platelet from Aug 1, 2019 to Jul 31, 2020 were selected as subjects, among which first-time donors were selected as control group and donors who donated twice or more as donation group. After matching gender and age using Propensity Score Matching method in the two groups, the changes of platelet, white blood cell, red blood cell counts, Hb and PCV of platelet blood donors were compared by t test. 【Results】 There were a slight increase in Plt (t=-6.651, P0.05) and in PCV (t=0.030, P>0.05) after plateletpheresis donation. 【Conclusion】 Plateletpheresis donation has an effect on some peripheral blood parameters, but within the normal reference range.

HTLV prevalence among blood donors in mainland China in recent 10 years: a meta-analysis / 中国输血杂志

【Objective】 To obtain HTLV prevalence data among blood donors in mainland China through meta-analyze, and provide reference for relevant policies. 【Methods】 The literature concerning HTLV prevalence among blood donors in mainland China before April 15, 2021 in CNKI, Wanfang and Pubmed was searched. According to the inclusion criteria and exclusion criteria, relative literature within recent 10 years was screened and then analyzed by meta-analysis using R3.3. 【Results】 A total of 69 articles were included, covering 22 provincial administrative regions, with a total sample size of 7 435 501 cases. 535 cases were HTLV positive, of which 491 centred on three coastal provinces as Fujian, Guangdong and Zhejiang, and 44 scattered in 11 other provincial administrative regions. The pooled prevalence of HTLV in blood donors in Fujian, Guangdong and Zhejiang provinces were 3.25/10 000(95%CI 1.91/10 000~4.58/10 000), 0.13/10 000(95%CI 0.09/10 000~0.17/10 000) and 0.33/10 000(95%CI 0.06/10 000~0.61/10 000), respectively. Subgroup analysis showed that the pooled prevalence of HTLV in Fujian blood donors decreased since December 2015. 【Conclusion】 Blood donors in mainland China present low HTLV prevalence, mainly distributed in three coastal provinces as Fujian, Guangdong and Zhejiang. The sample size tested increased greatly since HTLV screening for blood donors was popularized nationwide in blood stations in December 2015, the infection rate of HTLV in Fujian, however, did not increase as expected.

Fluctuation of peripheral blood levelamongapheresis platelet donors aged 56~60 in Guangzhou / 中国输血杂志

【Objective】 To study and analyze the fluctuation of peripheral blood of apheresis platelet donors aged 56~60, so as to provide data support for safe recruitment and retention of elderly donorsin China. 【Methods】 Elderly apheresisplatelet donors, aged 56~60, donated for 6 769 occasions from 2017 to 2019 in Guangzhou Blood Center were analyzed retrospectively and grouped by gender and age. The fluctuation of peripheral blood was analyzed byone way ANOVA.Further pairwise comparison was carried out by Turky if there were statistical differences. 【Results】 All the peripheral blood levels were statistically significant between men and women aged around 56 (P<0.05). The Plt(×109 / L), RBC(×1012 / L) and Hb(g/L) of women after and before 56 were (274.33±49.47) vs (296.61±44.89), (4.48±0.35) vs (4.4±0.3), and (125.87±9.08) vs (128.33±8.79), respectively, and the differences were statistically significant (P<0.05), while no differences was noticed between them inWBC(×109 / L) and Hct, (6.29±1.36) vs (6.26±1.46) and (0.39±0.05) vs (0.39±0.02), respectively(P>0.05). The RBC(1012 / L), Hb(g/L), WBC(×109 / L) and Hctof men after and before 56 were (4.94±0.39) vs (4.91±0.35), (137.15±12.83) vs (141.29±10.67), (5.77±1.23) vs (6.03±1.26) and (0.42±0.03) vs (0.42±0.03), respectively, and the differences were statistically significant (P<0.05), and no significant difference was noticed in Plt(×109 / L)(283.94±59.63) vs (283.5±62.7)(P>0.05). There was no significant difference in Plt between men and women after 56 (P>0.05). The RBC, Hb and Hct of men around 56 were higher than those of women (P<0.05). The deferral rate of pretransfusion blood testing increased as the platelet donors were older than 56, showing statistical significance(P<0.05). 【Conclusion】 Fluctuation of peripheral blood levelof platelet donors aged 56~60 occurred when they were around 56 years old, but within the normal range.Therefore, blood donation is generally safe under the current policy. As the physiological regulation function of these donors has decreased, the monitoring of peripheral blood routine before and after blood donation needs to be strengthened to ensure blood quality and the health of elderly platelet donors.

An investigation of short physical performance battery score and its influencing factors among the elderly in communities of Shanghai / 中华老年医学杂志

Objective:To explore the main influencing factors for physical performance assessed by the short physical performance battery(SPPB)in the elderly in communities in Shanghai.Methods:A total of 500 elderly subjects from four communities in Shanghai who met the inclusion criteria with 165 males and 335 females aged 60-95 years(70.5±7.8)years were enrolled.A questionnaire was used to assess the general situation.International Physical Activity Questionnaire-Short Form(IPAQ-SF)was used to assess physical activity(PA). The appendicular skeletal muscle mass(ASM)was measured by bioelectrical impedance analysis, and the relative skeletal muscle mass index(RSMI). The lower extremity muscle strength(quadriceps strength, QS)was measured by a hand-held dynamometer.Lower body muscle quality(LB-MQ) was ascertained by taking the ratio of strength to muscle mass for lower extremity.SPPB score was used to assess physical activity, including full tandem test, 4-meter walking speed test and five timed chair stands test.Results:The age, RSMI, ASM and quadriceps strength were higher, and the body fat content was lower in males than in females(all P<0.001). There were no significant differences in BMI, SPPB scores, LBMQ, and PA between males and females( P>0.05). Pearson correlation analysis showed that SPPB score was negatively correlated with age( r=-0.615, P<0.001)and body fat content( r=-0.103, P=0.022), but SPPB score was positively correlated with quadriceps strength( r=0.351, P<0.001), RSMI( r=0.134, P=0.003), LBMQ( r=0.268, P<0.001)and amount of PA( r=0.204, P<0.001), however, SPPB score had no relationship with gender( r=0.068, P=0.132). Conclusions:Aging and frailty are the main factors for the decline of physical performance in the elderly.Participating physical activity, reducing body fat, maintaining muscle mass, and especially increasing muscle quality, may be the main interventions to prevent the further deterioration of physical performance in the elderly.

The relationship between the initial pathological parameters of renal biopsy and the prognosis of Henoch-Schonlein purpura nephritis in the childhood / 中国小儿急救医学

Henoch-schonlein purpura is the most common vasculitis in the childhood.The prognosis of Henoch-schonlein purpura is mainly dependent on the renal component of the disease, which is equal to the severity of Henoch-schonlein purpura nephritis(HSPN). To predict the outcome of the HSPN, the pathology of renal biopsy is still remaining the gold standard.The conventional histological classification of the International Study of Kidney Disease in Chlidren(ISKDC), which is facing severe challenges in evaluating the prognosis of the HSPN, is imprecise.So it′s very necessary to recognize the relationship between specific pathological changes and prognosis of HSPN.So we reviewed the relationship between specific pathological changes and the prognosis prediction of HSPN in this paper, hoping to guide the clinical work.

Diagnostic Utility of Virtual Bronchoscopic Navigation Assisted Endobronchial Ultrasonography with Guide Sheath for Peripheral Pulmonary Lesions / 中国肺癌杂志

BACKGROUND@#Virtual bronchoscopic navigation (VBN) assisted endobronchial ultrasonography with guide sheath (EBUS-GS) has reduced the difficulty and even avoiding radiation exposure during performing transbronchus lung biopsy (TBLB). To evaluate the feasibility and safety of virtual bronchoscopic navigation assisted endobronchial ultrasonography with guide sheath for peripheral pulmonary lesions.@*METHODS@#We performed a retrospective analysis of the patients with PPLs who received VBN assisted EBUS-GS-TBLB in Peking University Cancer Hospital from January 2016 to December 2017. Their clinicopathologic data and complications were assessed.@*RESULTS@#A total of 121 patients were enrolled in the study. The patients included 65 men and 56 women, with a mean age of (58.8±10.3) years. A total of 121 PPLs were examined, and 108 lesions of which could be detected by EBUS. The overall diagnostic yield of EBUS-GS was 73.5%. The diagnostic yield of malignancy was 82.5%. The combination of transbronchial lung biopsy, brush smear and bronchoalveolar lavage fluid provided the greatest diagnostic yield (χ²=6.084, P=0.014). Factors that significantly affected and predicted diagnostic success were EBUS probe within the lesions (χ²=20.372, P=0.000) and PPLs located in the central two-thirds of the lung (χ²=10.810, P=0.001). 1 patient (0.8%) suffered from intraoperative bleeding which could be managed under endoscopy.@*CONCLUSIONS@#VBN assisted EBUS-GS-TBLB for PPLs was an effective and safe procedure.