Objective: To explore the association of outdoor activity time and sleep duration with screening myopia in primary school students, so as to provide strategies for myopia prevention. Methods: Through a convenience sampling method, a survey was conducted among 4 248 primary school students aged 7-13 years from three primary schools in Xihu District, Nanchang City, Jiangxi Province from May to July, 2023. The average daily outdoor activity time and sleep duration on both weekdays and weekends were investigated in primary school students by using a self designed questionnaire. Uncorrected visual acuity tests and non cycloplegic autorefraction were measured by professional optometrists. Inter group comparisons were conducted using the Chi square test. Logistic regression model was used to analyze the association of outdoor activity time and sleep duration with screening myopia. Results: The detection rate of screening myopia in primary school students was 33.6%, with the rate in boys (32.0%) lower than that in girls (35.3%), and the difference was statistically significant ( χ 2=5.11, P =0.02). The analysis results of Logistic regression showed that after adjusting for factors such as gender, grade and parental education level, both average daily outdoor activity time ＜2 h on both weekdays and weekends ( OR =1.27, 95% CI =1.11-1.46) and sleep duration <10 h ( OR =1.17, 95% CI =1.01- 1.35 ), as well as their combined effect ( OR =1.57, 95% CI =1.25-1.98), were associated with an increased risk of screening myopia in primary school students(all P <0.05). Subgroup analysis results indicated that compared to boys ( OR =1.46, 95% CI = 1.07 -1.99), girls( OR =1.73, 95% CI =1.22-2.44) with insufficient outdoor activity time and sleep duration had a higher risk of screening myopia(both P <0.05). Conclusions There is a negative correlation of outdoor activity time and sleep duration with screening myopia in primary school students. Outdoor activity time and extending sleep duration should be increased to reduce the risk of myopia in primary school students.

Objective: To investigate the association between screening detected myopia in primary school students and mixed exposure to air pollutants, so as to provide a scientific basis for the prevention and control of myopia in children and adolescents. Methods: From May to July 2023, a cluster random sampling method was used to select 15 102 primary school students in grades 3 through 6 from Hefei, Zhongshan, Shenyang, and Nanchang citys. Data were collected through questionnaires, distance vision screening, and computerized refraction. Monthly average concentration data for particulate matter (PM 10 ), fine particulate matter (PM 2. 5), NO 2 and SO 2 were used to calculate the annual average pollutant concentrations for primary school students. Quantile g computation model was employed to analyze the association between mixed exposure to air pollutants and screening detected myopia. Results: The differences in concentrations of the four pollutants among cities were statistically significant ( H =12 886.0, 13 285.0, 8 559.0, 13 181.0, all P <0.01). In the overall sample, there was no statistically significant association between combined exposure to air pollutants and the risk of myopia ( β=0.033, 95%CI=-0.004-0.072, P =0.08). Stratified analysis by outdoor activity time showed that among primary school students with outdoor activity time ≤1 h/d, mixed exposure to air pollutants was positively associated with the risk of myopia ( β=0.050, 95%CI=0.002-0.099, P =0.04); after stratification by city, combined exposure to air pollutants was significantly associated with the risk of myopia among primary school students in Nanchang and Shenyang [ β (95% CI )= 0.232(0.175-0.289), 0.080(0.006-0.155), both P <0.05], whereas no statistically significant association was observed among primary school students in Hefei and Zhongshan [ β (95% CI )=-0.010(-0.071-0.051), -0.032(-0.167-0.102), both P ＞ 0.05 ]. Conclusions Exposure to multiple air pollutants may increase the risk of myopia in primary school students, with the risk influenced by time spent outdoors and geographical location. It is recommended that outdoor activity management for children be strengthened in areas with higher air pollution levels, and that environmental factors be incorporated into comprehensive myopia prevention and control strategies.

Objective To systematically evaluate the level of proteus mirabilis(PM)infection in patients with rheumatoid arthritis(RA)and to investigate its potential association with the development of RA.Methods Based on Meta-analysis of observational studies in epidemiology and preferred reporting items for systematic review and Meta-analysis guide,a comprehensive search of PubMed,Web of Science and Embase databases was conducted to screen relevant literature published up to December 2024 for studies comparing the levels of anti-PM antibodies between RA patients and healthy populations,and the quality of the included studies was assessed by using the Newcastle-Ottawa scale.Heterogeneity among studies was assessed by Q-test and I2-test,and accordingly,fixed-effects or random-effects models were selected,and the robustness of the results was assessed by sensitivity analyses,Begg's test,and clipping and patching method.Results Finally,18 eligible articles were included,involving 753 RA patients and 716 healthy controls.The total antibody levels[weighted mean difference(WMD)=0.86,95％CI:0.38-1.34,I2=98.3％,P=0.000]and IgA antibody levels(WMD=0.17,95％CI:0.06-0.28,I2=96.7％,P=0.000)of RA patients were higher than those of healthy controls,and subgroup analyses revealed significant heterogeneity among geographic regions and testing methods.Conclusion Prevention and treatment of PM infections may be a complementary strategy for RA management and provide evidence-based support for the"PM antigen-genitourinary tract mucosa-autoimmunity"pathology hypothesis.

Objective To systematically evaluate the level of proteus mirabilis(PM)infection in patients with rheumatoid arthritis(RA)and to investigate its potential association with the development of RA.Methods Based on Meta-analysis of observational studies in epidemiology and preferred reporting items for systematic review and Meta-analysis guide,a comprehensive search of PubMed,Web of Science and Embase databases was conducted to screen relevant literature published up to December 2024 for studies comparing the levels of anti-PM antibodies between RA patients and healthy populations,and the quality of the included studies was assessed by using the Newcastle-Ottawa scale.Heterogeneity among studies was assessed by Q-test and I2-test,and accordingly,fixed-effects or random-effects models were selected,and the robustness of the results was assessed by sensitivity analyses,Begg's test,and clipping and patching method.Results Finally,18 eligible articles were included,involving 753 RA patients and 716 healthy controls.The total antibody levels[weighted mean difference(WMD)=0.86,95％CI:0.38-1.34,I2=98.3％,P=0.000]and IgA antibody levels(WMD=0.17,95％CI:0.06-0.28,I2=96.7％,P=0.000)of RA patients were higher than those of healthy controls,and subgroup analyses revealed significant heterogeneity among geographic regions and testing methods.Conclusion Prevention and treatment of PM infections may be a complementary strategy for RA management and provide evidence-based support for the"PM antigen-genitourinary tract mucosa-autoimmunity"pathology hypothesis.

Objective:To investigate the effect of miR-1-3p on mitophagy in human esophageal squamous cell carcinoma (ESCC) cells and the related mechanisms.Methods:The differentially expressed miRNAs in ESCC were screened using the GEO database. Real-time quantitative polymerase chain reaction (RT-qPCR) was used to measure miR-1-3p expression in normal esophageal epithelial cells (HET-1A) and ESCC cell lines (TE1, KYSE30, KYSE150, KYSE410, Eca109). Bioinformatics tools were utilized to predict target genes of miR-1-3p, subcellular localization was confirmed by fluorescence in situ hybridization. The targeting relationship between miR-1-3p and SLC7A11 was validated using dual-luciferase reporter assay. Cell proliferation and apoptosis were detected by CCK8 assay and flow cytometry, respectively. Furthermore, experimental validation demonstrated that overexpression of SLC7A11 rescued the presence of the miR-1-3p/SLC7A11 axis. Confocal microscopy was used to detect changes in mitochondrial autophagic lysosomes, while transmission electron microscopy was employed to observe mitophagy and morphological alterations. Western blot was conducted to evaluate the expression of autophagy-related proteins LC3 and P62. Flow cytometry was used to measure mitochondrial membrane potential and reactive oxygen species (ROS). Immunohistochemistry was applied to assess SLC7A11 expression in 133 ESCC patient tissues and 115 normal esophageal epithelial tissues. The correlation between SLC7A11 expression level and clinicopathological features was analyzed. Survival analysis was performed using the Kaplan-Meier method, and Cox proportional hazard regression models were used for multivariate analysis.Results:The expression of miR-1-3p in ESCC cells was significantly lower than that in HET-1A cells ( P＜0.05). SLC7A11 was a target gene of miR-1-3p. Transfection of miR-1-3p mimic inhibited the proliferation of ESCC cells. CCK-8 assay results showed that the proliferative capacity of KYSE30 and KYSE410 cells in the miR-1-3p mimic group (absorbance values: 2.88±0.24 and 2.88±0.18, respectively) was significantly lower than that in the miRNA mimic negative control (NC) group (3.94±0.27, P＜0.001; 4.20±0.21, P＜0.001). Meanwhile, the proliferative capacity of KYSE30 and KYSE410 cells in the miR-1-3p mimic+SLC7A11-overexpression (OE) group (absorbance values: 3.57±0.15 and 3.60±0.13, respectively) was significantly higher than that in the miR-1-3p mimic +empty vector (EV) group (2.54±0.10, P＜0.001, 2.36±0.16, P＜0.001). Additionally, transfection of miR-1-3p mimic promoted apoptosis. Flow cytometry results demonstrated that the apoptosis rates of KYSE30 and KYSE410 cells in the miR-1-3p mimic group [(9.22±0.05)% and (6.55±0.37)%, respectively] were significantly higher than those in the miRNA mimic NC group [(0.81±0.17)%, P＜0.001); (1.04±0.12)%, P＜0.001]. Conversely, the apoptosis rates of KYSE30 and KYSE410 cells in the miR-1-3p mimic + SLC7A11-OE group [(0.73±0.04)% and (1.19±0.05)%, respectively] were significantly lower than those in the miR-1-3p mimic+EV group [(9.83±0.41)%, P＜0.001); (6.09±0.17)%, P＜0.00)]. MiR-1-3p mimic downregulated SLC7A11 protein expression and the LC3Ⅱ/LC3I ratio ( P＜0.05), upregulated P62 protein expression ( P＜0.05), this phenomenon can be rescued by overexpressing SLC7A11 ( P＜0.05). Additionally, miR-1-3p mimic increased ROS levels and decreased mitochondrial membrane potential (JC-1 aggregate/monomer ratio), this phenomenon can be rescued by overexpressing SLC7A11 ( P＜0.05). SLC7A11 expression was higher in ESCC tissues compared to normal esophageal epithelial tissues ( P＜0.001), and SLC7A11 serves as an independent prognostic factor in ESCC ( HR=2.15, 95% CI: 1.27-3.65, P=0.004). Conclusion:miR-1-3p inhibits mitophagy in esophageal squamous cell carcinoma by targeting SLC7A11.

Objective:To investigate the effect of miR-1-3p on mitophagy in human esophageal squamous cell carcinoma (ESCC) cells and the related mechanisms.Methods:The differentially expressed miRNAs in ESCC were screened using the GEO database. Real-time quantitative polymerase chain reaction (RT-qPCR) was used to measure miR-1-3p expression in normal esophageal epithelial cells (HET-1A) and ESCC cell lines (TE1, KYSE30, KYSE150, KYSE410, Eca109). Bioinformatics tools were utilized to predict target genes of miR-1-3p, subcellular localization was confirmed by fluorescence in situ hybridization. The targeting relationship between miR-1-3p and SLC7A11 was validated using dual-luciferase reporter assay. Cell proliferation and apoptosis were detected by CCK8 assay and flow cytometry, respectively. Furthermore, experimental validation demonstrated that overexpression of SLC7A11 rescued the presence of the miR-1-3p/SLC7A11 axis. Confocal microscopy was used to detect changes in mitochondrial autophagic lysosomes, while transmission electron microscopy was employed to observe mitophagy and morphological alterations. Western blot was conducted to evaluate the expression of autophagy-related proteins LC3 and P62. Flow cytometry was used to measure mitochondrial membrane potential and reactive oxygen species (ROS). Immunohistochemistry was applied to assess SLC7A11 expression in 133 ESCC patient tissues and 115 normal esophageal epithelial tissues. The correlation between SLC7A11 expression level and clinicopathological features was analyzed. Survival analysis was performed using the Kaplan-Meier method, and Cox proportional hazard regression models were used for multivariate analysis.Results:The expression of miR-1-3p in ESCC cells was significantly lower than that in HET-1A cells ( P＜0.05). SLC7A11 was a target gene of miR-1-3p. Transfection of miR-1-3p mimic inhibited the proliferation of ESCC cells. CCK-8 assay results showed that the proliferative capacity of KYSE30 and KYSE410 cells in the miR-1-3p mimic group (absorbance values: 2.88±0.24 and 2.88±0.18, respectively) was significantly lower than that in the miRNA mimic negative control (NC) group (3.94±0.27, P＜0.001; 4.20±0.21, P＜0.001). Meanwhile, the proliferative capacity of KYSE30 and KYSE410 cells in the miR-1-3p mimic+SLC7A11-overexpression (OE) group (absorbance values: 3.57±0.15 and 3.60±0.13, respectively) was significantly higher than that in the miR-1-3p mimic +empty vector (EV) group (2.54±0.10, P＜0.001, 2.36±0.16, P＜0.001). Additionally, transfection of miR-1-3p mimic promoted apoptosis. Flow cytometry results demonstrated that the apoptosis rates of KYSE30 and KYSE410 cells in the miR-1-3p mimic group [(9.22±0.05)% and (6.55±0.37)%, respectively] were significantly higher than those in the miRNA mimic NC group [(0.81±0.17)%, P＜0.001); (1.04±0.12)%, P＜0.001]. Conversely, the apoptosis rates of KYSE30 and KYSE410 cells in the miR-1-3p mimic + SLC7A11-OE group [(0.73±0.04)% and (1.19±0.05)%, respectively] were significantly lower than those in the miR-1-3p mimic+EV group [(9.83±0.41)%, P＜0.001); (6.09±0.17)%, P＜0.00)]. MiR-1-3p mimic downregulated SLC7A11 protein expression and the LC3Ⅱ/LC3I ratio ( P＜0.05), upregulated P62 protein expression ( P＜0.05), this phenomenon can be rescued by overexpressing SLC7A11 ( P＜0.05). Additionally, miR-1-3p mimic increased ROS levels and decreased mitochondrial membrane potential (JC-1 aggregate/monomer ratio), this phenomenon can be rescued by overexpressing SLC7A11 ( P＜0.05). SLC7A11 expression was higher in ESCC tissues compared to normal esophageal epithelial tissues ( P＜0.001), and SLC7A11 serves as an independent prognostic factor in ESCC ( HR=2.15, 95% CI: 1.27-3.65, P=0.004). Conclusion:miR-1-3p inhibits mitophagy in esophageal squamous cell carcinoma by targeting SLC7A11.

Objective This study aimed to estimate the therapeutic effects of preformed metal crown(PMC)and pre-fabricated zirconia crowns(ZC)on decayed primary morals in children,as well as to analyze the possible influencing fac-tors.Methods A retrospective cohort study was performed on the data of 192 patients(aged 3 to 8)in the Stomatologi-cal Department of Shenzhen Children's Hospital from October 2021 to December 2021.The decayed mandibular first molars were selected and restored by vital-pulp therapy followed by PMC and ZC,including 96 cases(96 caries)in the PMC group and 96 cases(96 caries)in the ZC group.Oral clinical examination was performed at 3 months,1 year,and 2 years after treatment,overwiewing the clinical therapeu-tic effects and periodontal status of PMC and ZC groups,as well as recording the crown integrity,gingival index(GI),probing bleeding index(BI),plaque index(PLI)and various prosthetic indices.Results No significance differences existed in the periodontal status of PMC and ZC groups at 3 months,1 year,and 2 years after treatment(P>0.05).However,the GI,BI,and PLI in the PMC group were higher than those in the ZC group at 3 months,1 year,and 2 years after treatment,and the difference was dramatically signifi-cant(P<0.05).No significances difference existed in various prosthetic indices(P>0.05),as well as in the GI,BI,and PLI,between the two groups(P>0.05).No significant differences existed in various prosthetic indices between genders after PMC restoration(P>0.05).The scores of girls in various prosthetic indices after ZC restoration were higher than those of boys(P<0.05).Pearson correlation analysis indicated an inverse correlation between age in the PMC group and the GI,BI,PLI,and FDI indices(P<0.01),rather than in the ZC group(P>0.05).Conclusion PMC and ZC can be ap-plied to restore deciduous molar caries.The periodontal status of deciduous teeth in ZC group was superior to that in the PMC group.The periodontal status of deciduous teeth in PMC group may be stable with increased age.

Objective: To describe the linear growth trajectory and BMI growth trajectory of children aged 0-6 years, and to investigate the relationship between different growth trajectory patterns and refractive error of preschool children. Methods: The participants were selected from Ma anshan Birth Cohort Study (MABC), which was established from May 2013 to September 2014. In this study, 15 follow up interviews were conducted among 2 037 live births between 42 days after birth and 72 months of age to collect the data of body length and body weight. And at the age of (72±6) months, data of the naked eye visual acuity was measured by professional ophthalmologist in Ma anshan Maternal and Child Health Hospital. The latent class growth model was conducted to identify distinct linear growth trajectory and BMI Z score trajectories of 0 to 6 year old infants and young children. Multinomial Logistic regression model was used for analyzing the relationship between distinct growth trajectories and ametropia in 6-year-old children. Results: According to the latent class growth model, children showed three obvious linear growth trajectories: slow growth trajectory ( n =302), normal growth trajectory ( n =1 162), and fast growth trajectory ( n =573). And BMI growth trajectory were also divided into three patterns: slow growth trajectory ( n =630), normal growth trajectory ( n =1 058), and fast growth trajectory ( n =349). Multinomial Logistic regression analysis showed that linear slow growth trajectory was a risk factor for hyperopia in 6-year-old children ( OR =1.80, 95% CI =1.09-2.98, P <0.05). But it was not significantly associated with myopia. There was no significant correlation between fast growth BMI pattern and slow growth BMI pattern with myopia and hyperopia in 6-year-old children. Conclusion Slower growth patterns in linear growth trajectories were associated with hyperopia in 6-year-old children.It should pay close attention to the height growth pattern of preschool children. Regular examination of physical development indicators and distance vision can help prevent the occurrence and development of ametropia in preschool children.

Multiple plant lineages have independently evolved sex chromosomes and variable kary-otypes to maintain their sessile lifestyles through constant biological innovation.Morus notabilis,a dioecious mulberry species,has the fewest chromosomes among Morus spp.,but the genetic basis of sex determination and karyotype evolution in this species has not been identified.In this study,three high-quality genome assemblies were generated for Morus spp.[including dioecious M.notabilis(male and female)and Morus yunnanensis(female)]with genome sizes of 301-329 Mb and were grouped into six pseudochromosomes.Using a combination of genomic approaches,we found that the putative ancestral karyotype of Morus species was close to 14 protochromosomes,and that sev-eral chromosome fusion events resulted in descending dysploidy(2n=2x=12).We also charac-terized a～6.2-Mb sex-determining region on chromosome 3.Four potential male-specific genes,a partially duplicated DNA helicase gene(named MSDH)and three Ty3_Gypsy long terminal repeat retrotransposons(named MSTG1/2/3),were identified in the Y-linked area and considered to be strong candidate genes for sex determination or differentiation.Population genomic analysis showed that Guangdong accessions in China were genetically similar to Japanese accessions of mul-berry.In addition,genomic areas containing selective sweeps that distinguish domesticated mul-berry from wild populations in terms of flowering and disease resistance were identified.Our study provides an important genetic resource for sex identification research and molecular breeding in mulberry.

Objective:To investigate the clinical effect of minimally invasive scar release combined with autologous microfat graft in the treatment of facial depressed scar.Methods:From September 2015 to May 2019, a total of 11 patients who had facial depressed scar were treated with minimally invasive scar release combined with autologous microfat graft in Huaihe Hospital of Henan University. Needle scar separator or 10 ml syringe needle was inserted under skin to release scar adhesion thoroughly. Microfat was harvested from the abdomen, which was separated and purified, and then evenly transplanted into the stripped space (0.5 cm wider than the edge of scar) under the scar with a 1 ml syringe. The severity of scar was evaluated pre-operation, 3-month post-operation and 6-month post-operation, using Vancouver Scar Scale score and Stony Brook Scar Evaluation Scale score to evaluate the efficacy. Using Visual Analogue Scale score to evaluate patient satisfaction. Analyses were performed using SPSS Statistics 25.0, and measurement data were expressed as Mean±SD if they conformed to normality and homogeneity of variance. One-way ANOVA was used for multi-time point data, and the Bonferroni test was performed for pairwise comparison. P<0.05 was considered a statistically significant difference. Results:The depression of scars disappeared immediately after treatment. 6 months after treatment, the surface of the scars was flat, the color and elasticity were close to adjacent normal skin, and the texture of the scars was soft. All patients were followed up for 6 months without recurrence, and 11 patients were satisfied. In Vancouver Scar Scale score, the pre-operation score was 7.27±1.10, the 3-month post-operation score was 2.64±0.81 and the 6-month post-operation score was 0.91±0.54, showing a significant difference ( F=467.98, P<0.001). Pairwise comparison result show that comparing the pre-operation score with 3 or 6 months post-operation score, showing a significant difference ( P<0.001). The comparison between 3 and 6 months post-operation score also showing a significant difference ( P<0.001). In Stony Brook Scar Evaluation Scale score, the pre-operation score was (2.00±0.89), the 3-month post-operation score was 4.45±0.69 and the 6-month post-operation score was 4.45±0.69, showing a significant difference ( F=67.00, P<0.001). Pairwise comparison result show that comparing pre-operation score with 3 or 6 months post-operation score, showing a significant difference ( P<0.001). The comparison between 3 and 6 months post-operation score also showing a significant difference ( P=0.006). The 6-month post-operation Visual Analogue Scale score was 95.0±6.74. Conclusions:Minimally invasive scar release combined with autologous microfat graft in the treatment of facial depressed scar can avoid the post-surgery scar formation and adhesion, and improve the color and texture of the facial hypertrophic scar. This method can be carried out under local anesthesia, with simple procedure and exact effect.