Various metabolic enzymes and signaling molecules in the reprogramming process of glucose metabolism are involved in the occurrence and development of lung cancer. The study of these metabolic enzymes and signaling molecules is one of the hot spots and directions in the clinical diagnosis and treatment of lung cancer. Fructose-bisphosphate aldolase A (ALDOA) is an important catalytic enzyme in the reprogramming of glucose metabolism, and the abnormal expression of ALDOA is intricately related to the occurrence and development of lung cancer. Systematically exploring of the role of ALDOA in lung cancer metabolism may provide new ideas for predicting the metastasis, prognosis, and treatment after drug resistance of lung cancer.

Objective: To explore the role of N6-methyladenosine(m6A) modification of RNA and Methyltransferase like Protein 14 methyltransferase(METTL14) in the pathogenesis of early-onset preeclampsia(ePE). Methods: Placental tissues of 15 pregnant women with early-onset preeclampsia and 15 normal pregnant women were collected. The level of m6A was determined by colorimetry, and the expression of METTL14 was determined by RT-qPCR, Western blot and immunohistochemistry(IHC) experiments. By transfecting siRNA and plasmid, METTL14 levels of trophoblast cells were knocked down and overexpressed, and cell phenotype experiments were carried out in vitro. The effects of METTL14 on the proliferation, migration and invasion of trophoblast cells were investigated by CCK-8, scratch assay, Transwell assay and invasion assay. Results: The level of m6A in placental tissue of ePE was lower than that of normal pregnancy. METTL14 was mainly expressed in the nuclei of trophoblast cells. Compared with normal pregnancy, the expression of METTL14 in placental tissue of ePE decreased, and thelevel of METTL14 mRNA was positively correlated with the level of m6A in placental tissue. The results of the CCK-8 experiment showed that compared with the control group, knockdown of METTL14 expression in trophoblast cells significantly reduced the cell proliferation rate, while the proliferation ability of trophoblast cells with overexpressed METTL14 was enhanced. The results of the scratch test showed that compared with the control group, the relative healing rate of scratches was significantly reduced after METTL14 knockdown, while it increased after the overexpression of METTL14. The results of the Transwell assay and invasion assay showed that compared with the control group, after knockdown of METTL14, the number of trophoblast cells passing through the chamber was significantly reduced, while the number of trophoblast cells with overexpressed METTL14 passing through the chamber increased. Conclusion The total RNA m6A modification level in placental tissue of ePE is lower than that in the normal pregnancy group. The down-regulation of methyltransferase METTL14 is involved in the regulation of the total RNA m6A modification level. The overexpression of METTL14 can enhance the proliferation, migration and invasion abilities of trophoblast cells. It provides a new perspective for exploring the pathogenesis of early-onset preeclampsia.

Objective To conduct the evaluation and comparison on the application effects of the 5-D Pruritus Assessment Scale and the Multidimensional Uremic Pruritus Assessment Scale in the patients with maintenance hemodialysis.Methods A total of 154 maintenance hemodialysis patients with pruritus symptom in this hospital from February to June 2023 were selected as the study subjects.The 5-D Pruritus Assessment Scale and the Multidimensional Uremic Itch Assessment Scale were used to evaluate the dimensions such as the pruritus degree,duration and itching location.After standardization treatment by aiming at the evaluation results of the two kinds of scales,the Bland-AItman method was adopted to conduct the consistency compari-son.The Spearman correlation coefficient was adopted to test the correlation between the two kinds of scales. Results The consensus limit (LoA) confidence interval of the 5-D Pruritus Assessment Scale was-0.1578 to 0.1603,the Multidimensional Uremic Pruritus Assessment Scale was-0.1592 to 0.1592.The Spearman correlation results showed that the two scales had the positive correlation (r=0.472,P<0.001).In the 5-D Pruritus Assessment Scale,the area under the curve(AUC) of the fractal dimensions such as duration,degree,development direction,disability and distribution were 0.674 (95％CI:0.557-0.790),0.799 (95％CI:0.700-0.899),0.637 (95％CI:0.528-0.747),0.951 (95％CI:0.905-0.997) and 0.786(95％CI:0.701-0.872),respectively.In the Multidimensional Uremic Pruritus Assessment Scale,AUC of the fractal dimen-sions such as symptom and sign,psychological society and sleep were 0.989 (95％CI:0.978-1.000),0.931 (95％CI:0.878-0.985),and 0.951 (95％CI:0.909-0.994),respectively.Conclusion The consistency of the two scales is good,and both scales can be used to evaluate uremia skin pruritus.The Multidimensional Uremic Pruritus Assessment Scale is more targeted in the assessment of sleep dimension,which is more suitable for the evaluation of maintenance hemodialysis patients.

Objective: To understand the status and associated factors of knowledge, attitude and practice (KAP) about myopia prevention and control among young children s parents in Guangzhou, so as to provide reference for family health education on myopia prevention and control. Methods: During January to February 2023, 4 584 parents of children from kindergarten and primary school (grade 1-3) were recruited. Two to three kindergartens and 2 primary schools were selected from each of the 3 urban districts and 2 suburb districts of Guangzhou by stratified cluster random sampling method. Parents of children were administered with online questionnaire survey on KAP about myopia prevention and control. Descriptive analyses and multivariate Logistic regression models were used. Results: The proportion of parents reaching standard of KAP about myopia prevention and control was 61.54%, the knowledge awareness rate was 57.30%, the positive attitude holding rate was 76.98% and the health practice formation rate was 63.31 %. Internet (70.35%) and lectures on school health education/health education materials (66.14%) were the most common ways for obtaining knowledge for parents. Multivariate Logistic regression analysis showed that urban area, higher education ( college /undergraduate or above), annual household income 50 000-90 000, 100 000-290 000, 300 000-490 000, 500 000- 590 000 , and ≥600 000 Yuan, being aware of vision status (normal/poor) of their children, one or both parents with myopia, both parents with non myopia, acquiring knowledge by multi ways(2, 3, ≥4) were associated with higher KAP about myopia prev ention and control ( OR =1.23, 1.34, 1.36, 1.25，1.49, 1.93, 2.34, 1.64, 1.66, 1.89, 3.48, 3.09, 2.42, 1.65, 2.29, 3.22, P ＜ 0.05). Conclusion Knowledge and practice about myopia prevention and control among young children s parents in Guangzhou are insufficient, yet the attitude was satisfactory. It is necessary to carry out targeted education for parents, especially those living in suburb area, with low education and income level.

Hepatolithiasis is a common biliary tract disease in China and other Asian countries.It has insidious onset,recurrent disease,and may lead to biliary cirrhosis or even cancer in the late stage without inter-vention.At present,surgery is considered to be the best choice for treatment.In the 21st century of minimally inva-sive surgery,traditional procedures such as partial hepatectomy,choledochotomy,cholangioenterostomy and liver transplantation can be performed with the assistance of laparoscopy and da Vinci robots,and emerging endoscopic techniques such as endoscopic retrograde cholangiopancreatography(ERCP)and percutaneous transhepatic cho-ledochoscopic lithotripsy(PTCSL)have also been developed,bringing better treatment for patients with hepatoli-thiasis.As treatment options are becoming more varied,there are also some clinical problems that need to be addressed.In this article,we would like to briefly review the current surgical treatment modalities in order to provide a theoretical basis for optimizing the treatment modalities.

Objective: To analyse monitoring absenteeism due to respiratory symptoms/diseases among preschoolers in Guangzhou, and to provide reference for risk prevention and control of respiratory infectious diseases in kindergartens. Methods: Data of absenteeism due to symptoms and diseases in kindergartens were collected from "Guangzhou Student Health Monitoring System", and was analyzed by using R 4.1.3 software. Results: During 2018-2020 academic year, there were 1 965, 2 019, 2 236 kindergartens being monitored respectively. The absenteeism rate of kindergarten s children due to respiratory symptoms and diseases in Guangzhou were 3.08‰ and 2.02‰. The absenteeism rates due to respiratory symptoms were 3.75‰, 4.17‰, 2.97‰ and 2.09‰ in baby class, junior class, middle class and senior class, respectively. The absenteeism rates due to respiratory diseases were 2.34 ‰, 2.60‰, 1.94‰ and 1.50‰, respectively. The absenteeism rate in higher grade was lower than that in lower grade( χ 2= 65 197.95 ，27 929.44， P <0.01). The absenteeism rates of boys (3.11‰, 2.05‰) due to respiratory symptoms/diseases were significantly higher than those of girls (3.06‰, 1.97‰)( χ 2=57.71，229.45， P <0.01). The absenteeism of preschoolers due to respiratory symptoms/diseases showed two peaks in December of the this year and May of the following year. At the beginning of the second semester of 2019 academic year (after the outbreak of Coronavirus disease 2019), the absenteeism rate due to respiratory symptoms/diseases were lower than those of the same period in previous years. Conclusions The absences due to respiratory symptoms or diseases not only accounted for half of the total absences due to illness, but also had seasonal characteristics. Children in the youngerage group and most boys are treated as a focus group for absence due to respiratory symptoms/illnesses. It s necessary to give full use of timely warning function of health monitoring system.

OBJECTIVE: To prepare an injectable hydrogel/staple fiber composite loaded with combretastain A-4 disodium phosphate (CA4P) and doxorubicin (DOX) and evaluate its antitumor efficacy via intratumoral injection. METHODS: DOX-loaded PELA staple fibers (F_DOX) were prepared using electro-spinning and cryo-cutting, and the drug distribution on the surface of the fibers was observed using a fluorescence microscope, and the encapsulation efficiency and loading capacity of F_DOX were determined with a fluorospectro photometer. The fibers were then dispersed in CA4P-loaded PLGA-PEG-PLGA tri-block polymer solution at room temperature to obtain the hydrogel/staple fiber composite (G_CA4P/F_DOX). The thermo-sensitivity of this composite was determined by a test tube inverting method. An ultraviolet spectrophotometer and a fluorospectrophotometer were used to detect the release profile of CA4P and DOX, respectively. We observed in vivo gel formation of the composite after subcutaneous injection in mice. The in vitro cytotoxicity of G_CA4P/F_DOX composite in MCF-7 and 4T1 cells was assessed using cell Counting Kit-8 (CCK-8) reagent. In a mouse model bearing breast tumor 4T1 cell xenograft, we evaluated the antitumor efficacy of the composite by monitoring tumor growth within 30 days after intratumoral injection of the composite. HE staining, immunohistochemistry for Ki67 and immunofluorescence (TUNEL) assay were used for pathological examination of the tumor tissues 21 days after the treatments. RESULTS: The average length of F_DOX was 4.0±1.3 μm, and its drug loading capacity was (2.69±0.35)% with an encapsulation efficiency of (89.70±0.12)%. DOX was well distributed on the surface of the fibers. When the temperature increased to 37 ℃, the composite rapidly solidified to form a gel in vitro. Drug release behavior test showed that CA4P was completely released from the composite in 5 days and 87% of DOX was released in 30 days. After subcutaneous injection, the composite solidified rapidly without degradation at 24 h after injection. After incubation with G_CA4P/F_DOX for 72 h, only 30.6% of MCF-7 cells and 28.9% of 4T1 cells were viable. In the tumor-bearing mice, the tumor volume was 771.9±76.9 mm³ in G_CA4P/F_DOX treatment group at 30 days. Pathological examination revealed obvious necrosis of the tumor tissues and tumor cell apoptosis induced by intratumoral injection of G_4A4P/F_DOX. CONCLUSION As an efficient dual drug delivery system, this hydrogel/staple fiber composite provides a new strategy for local combined chemotherapy of solid tumors.
Animals ; Breast Neoplasms/drug therapy* ; Cell Line, Tumor ; Delayed-Action Preparations/therapeutic use* ; Doxorubicin/therapeutic use* ; Female ; Heterografts ; Humans ; Hydrogels/therapeutic use* ; Mice ; Mice, Inbred BALB C ; Phosphates

Objective: To describe the prevalence and relationship between moderate to vigorous physical activity(MVPA), screen time (ST) and depressive symptoms among middle school students in Guangzhou, and to provide a reference for adolescent depression prevention and control. Methods: Using stratified cluster random sampling method, a total of 2 140 students were selected from one urban area and one suburban country for MVPA, ST and depressive symptoms investigation. Logistic regression was used to analyze relations among MVPA, ST and their combined patterns for depressive symptoms. Results: A total of 89.72% students failed to meet the MVPA recommendations, girls (95.52%) were higher than boys(84.38%). Totally 67.38% of the students failed to meet the ST recommendations, boys (69.75%) were higher than girls(64.81%). The prevalence of depressive symptoms was 27.01%, girls (31.58%) higher than boys(22.80%). MVPA, ST failure compliance rate and depression symptoms detection rate of vocational high school and ordinary high school were higher than junior high school ( χ 2=6.40,121.71,27.37, P ＜ 0.05 ). Logistic regression analysis showed that the OR for depressive symptoms was 1.19 ( P =0.35) in students whose MVPA time achieving 1 h<7 d in the last week, and was 1.93 ( P <0.01) in students with the ST>2 h/d independently, no significant interactions were observed. Students with both MVPA time 1 h<7 d in the last week and the ST>2 h/d were more likely to report depressive symptoms( OR=2.03, P <0.05). Conclusion Insufficient MVPA, prolonged ST and high prevalence of depressive symptoms are observed among middle school students in Guangzhou. Students with both insufficient MVPA and prolonged ST are more likely to suffer from depressive symptoms. Specific psychological care and health education regarding physical activity and screen behavior should be implemented to students with different characteristics, as well as their parents for depressive symptom prevention.

Objective: To investigate the general situation of scoliosis and influencing factors among middle school students in Guangzhou, so as to provide evidence for behavioral intervention measures. Methods: By stratified cluster random sampling method, 2 121 students from 8 middle schools of Guangzhou were selected to conduct questionnaire survey and physical examination. Results: The detection rate of scoliosis among middle school students in Guangzhou was 8.20%, girls (9.50%)＞boys (7.00%), urban area (10.45%)＞suburb area (4.77%), senior high school (10.08%)＞junior school (6.39%) ( P ＜0.05). Among the most of the 174 positive students were found to have large thoracic curve, right lateral bending, being girls with medium scoliosis. Multivariate Logistic regression analysis showed that students in urban area ( OR=2.56, 95%CI =1.71-3.82), with mobile electronic devices usage time≥3 h/d( OR=1.59, 95%CI =1.12-2.27), prolonged near vision work ≥1 h ( OR=1.40, 95%CI =1.00-1.95), outdoor activity time＜2 h/d( OR=1.82, 95%CI =1.24-2.67) had a higher detection rate of scoliosis ( P <0.05). Conclusion The detection rate of scoliosis among middle school students in Guangzhou is much higher, which might be related to district, mobile electronic devices usage, prolonged near vision work and insufficient outdoor activity. Health education regarding spinal knowledge should be strengthened.

Metal-organic frameworks (MOFs), comprised of organic ligands and metal ions/metal clusters