Objective To identify factors affecting and key environmental factors of the Oncomelania hupensis snail density in the Yangtze River Delta region using machine learning methods. Methods Administrative village-level O. hupensis snail survey data in the Yangtze River Delta (including Shanghai Municipality, Jiangsu Province, Zhejiang Province and Anhui Province) from 2011 to 2021 were retrieved from the Information Management System for Parasitic Disease Control of Chinese Center for Disease Control and Prevention. Environmental factor data were captured from the Google Earth Engine platform, including elevation, slope, terrain, normalized difference vegetation index (NDVI), vegetation type, soil type, total petroleum hydrocarbon (TPH), ammonium nitrogen, inorganic nitrogen, dissolved oxygen, pH of water, chemical oxygen demand (COD) and inorganic phosphorus, and climatic factor data in the study region were retrieved from the Copernicus Climate Data Store, including annual precipitation, aridity index and annual mean temperature (AMT). O. hupensis snail survey data in the Yangtze River Delta region from 2011 to 2021 were randomly divided into a training set (70%) and a test set (30%), and five machine learning models were selected for machine learning model construction and comparative analysis of the O. hupensis snail density using the software R 4.3.0, including random forest (RF), eXtreme gradient boosting (XGBoost), support vector machine (SVM), gradient boosting machine (GBM) and neural network (NN). The XGBoost model was employed to construct a predictive model for the O. hupensis snail density, and the impact of each environmental factor on O. hupensis snail distribution was quantified. The SHapley Additive exPlanations (SHAPs) values were calculated to estimate the average contribution of each variable to the model prediction, and the core environmental factors affecting the O. hupensis snail population density were screened. Results Among the five machine learning models, the XGBoost model exhibited the optimal comprehensive performance, with the coefficient of determination (R²) of 0.855, mean squared error (MSE) of 0.188, root mean squared error (RMSE) of 0.434 and mean absolute error (MAE) of 0.155, respectively. Analysis of factors affecting the O. hupensis snail density with the XGBoost model showed that among the 16 environmental factors, the top four high-impact factors ranked by SHAPs values included annual precipitation, elevation, aridity index and NDVI, with cumulative SHAPs contributions of 75%, which was higher than that of other environmental factors. If NDVI was higher than 0.6, the O. hupensis snail density increased with NDVI and peaked if NDVI was 0.8 (1.60 snails/0.1 m²). The O. hupensis snail density increased with elevation if the elevation ranged from 14 to 40 m, and slowly rose if the annual precipitation ranged from 900 to 1 300 mm, and then increased rapidly to the peak (1.52 snails/0.1 m²) if the annual precipitation ranged from 1 300 to 1 500 mm. In addition, the O. hupensis snail density increased rapidly to the maximum (1.60 snails/0.1 m²) if the aridity index ranged from 0.8 to 1.1, and decreased gradually if the aridity index exceeded 1.1. Conclusions The XGBoost model shows excellent performance in prediction of the O. hupensis snail density and identification of key environmental factors in the Yangtze River Delta region. Annual precipitation, elevation, aridity index and NDVI are key environmental factors affecting the distribution and density of O. hupensis snails in the Yangtze River Delta region.

Background Sunshine duration is closely associated with population mental health and emotional states, although its relationship with mental and behavioral disorders (MBD) remains insufficiently studied. Objective To analyze the effect of sunshine duration on hospital admissions for MBD in Zigong City, Sichuan Province. Methods Hospital admission records for MBD from 10 medical institutions, meteorological data, and ambient air pollutant concentrations were collected in Zigong City from January 1, 2019 to December 31, 2024. A distributed lag non-linear model (DLNM) was employed to calculate single-day and cumulative lag effects of different sunshine duration exposures—0 h (P₀, P₅, P₂₅), 6 h (P₇₅), and 10.4 h (P₉₅)—on hospitalization risks for MBD, stratified by diagnostic category, sex, and age groups. Results This study analyzed 36597 hospital admissions for MBD in Zigong City. The exposure-response curve for sunshine duration at lag 0 d exhibited an inverted N-shaped pattern, with minimum relative risk (RR) of hospitalizations observed at 14 h sunshine duration. The immediate effects of different levels of sunshine duration on the hospitalization risk for MBD, schizophrenia, schizotypal and delusional disorders (SSDD), and neurotic, stress-related and somatoform disorders (NSSD) were significant, with the cumulative effect peaking at lags 12–13 days. For extremely short sunshine duration 0 h, the maximum relative risk (RR) values (with 95% confidence intervals, 95%CI) of hospitalization risk were 1.209 (1.001, 1.459) at lag 1 d for SSDD patients and 1.398 (1.133, 1.724) at lag 0 d for NSSD patients, respectively. The cumulative effect on hospitalization risk induced by short sunshine duration 6 h was higher than that induced by extremely short sunshine duration 0 h and long sunshine duration 10.4 h. Among populations stratified by gender and age, male patients and those aged over 70 years had higher hospitalization risks. For short sunshine duration 6 h, the cumulative RR (CRR) value (95%CI) of hospitalization risk for male MBD patients was 3.373 (1.362, 8.358) at cumulative lag 0–12 d, which was higher than that for female patients [2.943 (1.471, 5.889) at cumulative lag 0–13 d]. The population aged over 70 years was more sensitive to single-day and cumulative lag effects on hospitalization risk than other age groups. For short sunshine duration 6 h, the RR and CRR values (95%CI) of single-day and cumulative lag effects on hospitalization risk were 1.336 (1.002, 1.783) at lag 0 day and 5.085 (1.680, 15.392) at cumulative lag 0–12 d, respectively. At lag 13 d, long sunshine duration 10.4 h exposure was associated with depression hospitalizations in patients <20 years with RR=1.127 (95%CI: 1.002, 1.270). Conclusion When the daily sunshine duration is less than 14 h, it will increase the hospitalization risk of MBD in the population to varying degrees, with both single-day and cumulative lag effects. It is recommended that the public, especially vulnerable groups such as people with MBD aged 70 years and above and those with depression under 20 years, strengthen health protection to reduce the health risks caused by changes in sunshine.

AIM:By establishing ischemic stroke(IS)rats and cell models,this study aimed to investigate the therapeutic effect of an enriched environment(EE)and to explore its impact on the neurotrophin 3(NT3)/p75 neuro-trophin receptor(p75NTR)signaling pathway.METHODS:The study consisted of in vivo and in vitro experiments.In vi-vo,Sprague-Dawley(SD)rats were randomly divided by weight into sham,IS,and IS+EE groups(n=10),with 8 addi-tional rats per group reserved for supplementary analyses.The IS model was established by the Longa suture occlusion method.Neurological and motor function deficits were assessed on days 1,3,7 and 14 post-modeling using the modified neurological severity score(mNSS).On days 3,7 and 14,4 additional rats from each group were sacrificed,and the whole-brain tissue was collected to measure infarct volume via 2,3,5-triphenyltetrazolium chloride(TTC)staining.On day 14,brain tissue was harvested for immunofluorescence staining to evaluate neuronal proliferation markers,while the ischemic penumbra was analyzed by Western blot for NT3/p75NTR pathway protein expression.In vitro,primary neural stem cells(NSCs)were isolated from fetal rats and cultured as neurospheres.These cells were divided into CON group and experimental groups treated with different concentrations of NT3 to evaluate the effects of NT3 on NSC proliferation and migration.Additionally,SH-SY5Y cell lines were used to establish an in vitro model of ischemic stroke through oxy-gen-glucose deprivation(OGD).These cells were treated with varying concentrations of NT3,along with CON and CON+NT3 groups,and a scratch assay was performed to assess the impact of NT3 on cell migration.RESULTS:EE significant-ly reduced neurological function scores in IS rats(P<0.05),prolonged latency in the rotarod test(P<0.05),and de-creased cerebral infarct area(P<0.05).EE further enhanced the protein expression of BrdU and Ki67 in the ischemic penumbra(P<0.05),as well as increased the co-expression of BrdU/DCX and BrdU/NeuN(P<0.05).Additionally,EE further upregulated the protein expression of NT3,p75NTR,PI3K,and Akt in the subventricular zone(SVZ)(P<0.05).In vitro,NT3(1 and 10 μg/L)significantly increased nestin expression(P<0.05)in the primary neural stem cell system.In the neural stem cell sphere system,compared to the CON group,1 μg/L NT3 markedly enhanced tubulin and phalloidin protein expression(P<0.05).In the scratch assay,1 ug/L NT3 significantly promoted the migration of both normal SH-SY5Y cells and OGD-induced SH-SY5Y cells compared to the CON group(P<0.05).CONCLUSION:Enriched envi-ronment activates the NT3/p75NTR signaling pathway,promoting the proliferation of NSCs in the SVZ and their migration to the ischemic penumbra,where they ultimately differentiate into neurons to replace those damaged,thereby contributing to the improvement of neurological function in rats with IS.

Purpose To investigate the changes in quadriceps femoris microcirculatory perfusion level after low-load blood flow restriction training and its relationship with muscle strength.Materials and Methods Twenty-five healthy subjects were prospectively recruited in the First Affiliated Hospital of Kunming Medical University from September to November 2022.A 200 mmHg pressure cuff was applied at the root of the left thigh for blood flow restriction,and the subjects completed regular knee extension training within 4 weeks.Before the first training session and within 24 hours after the last training session,all subjects underwent scanning with the 3.0T MRI intravoxel incoherent motion sequence and the multi-echo steady-state acquisition three-dimentional imaging sequence.After image post-processing,the quadriceps femoris cross-sectional area,perfusion fraction and pseudo-diffusion coefficient were obtained,and the peak torque was measured using an isokinetic dynamometer.The MRI and muscle strength test parameters before and after training were compared,and correlation analyses were performed between the change of peak torque and the change of perfusion fraction,cross-sectional area,and pseudo-diffusion coefficient respectively.Results After low-load blood flow restriction training,the cross-sectional area of the left quadriceps femoris in subjects increased(t=-4.515,P<0.05).Among its components,the cross-sectional area of the left rectus femoris,vastus intermedius and vastus lateralis all increased(t=-3.302,-2.877,-3.207,all P<0.05).The perfusion fraction value of the left quadriceps femoris increased(t=-5.447,P<0.05);the perfusion fraction values of the left rectus femoris,vastus intermedius,vastus lateralis and vastus medialis all increased(t=-5.723,-4.621,-3.767,-4.682,all P<0.05);the muscle strength of the left quadriceps femoris increased(t=-3.983,P<0.05).There was a highly positive correlation between change of perfusion fraction and peak torque of the left quadriceps femoris in subjects(r=0.708,P<0.05).Conclusion After low-load blood flow restriction training,the changes in quadriceps femoris muscle microperfusion quantified by intravoxel incoherent motion are related to muscle strength,which is helpful for formulating rehabilitation training strategies for young patients.

Under the current situation of "low prevalence and low infection" of schistosomiasis in China, and to provide a basis for achieving the goal of eliminating schistosomiasis by 2030 proposed by the Healthy China Action (2019 - 2030) as scheduled, the Hunan Provincial Corps Hospital of the Chinese People's Armed Police Force established a schistosomiasis monitoring and early warning index system based on the previous studies on schistosomiasis early warning index system and the recent literature analysis, combined with the current potential risk factors affecting the transmission and prevalence of schistosomiasis, and organized two rounds of expert consultation and carried out project promotion meetings. The experts reached a consensus on the comprehensiveness and practicability of the index system, aiming to lay a solid foundation for construction of China's schistosomiasis prevention and control early warning system.

OBJECTIVE To investigate the management status of small pressure steam sterilizers in dental institu-tions across seven major regions of China and provide references for establishing standardized monitoring and eval-uation protocols for sterilization efficacy.METHODS From Aug.to Nov.2023,a convenience sampling method was employed to select 885 dental institutions of various levels from seven geographical regions.An online survey using a self-designed questionnaire was conducted to assess the management status of small pressure steam steri-lizers in dental institutions.RESULTS A total of 885 questionnaires were distributed,with 770 valid responses col-lected,covering 770 dental institutions at all levels.The survey involved 2 056 small pressure steam sterilizers,of which 43.14％were pre-vacuum type and 89.40％were benchtop models.Tertiary dental institutions had the high-est proportion of imported small pressure steam sterilizers(60.15％),with most devices in use for 5-10 years(36.88％).Secondary and low er-level institutions predominantly used domestically produced small pressure steam sterilizers(74.60％),which used for 3-5 years accounting for the highest proportion(34.29％).While 85.58％of dental institutions employed dedicated sterilization personnel,only 45.84％performed proper maintenance for small pressure steam sterilizers.Training rates were 80.00％for department of stomatology in ungraded general hospitals and primary medical institutions,76.19％in prejob and 71.43％during the work for department of sto-matology in primary clinics,respectively.CONCLUSIONS Although most dental institutions demonstrate sound policy formulation,challenges persist in equipment maintenance,policy implementation and grassroots training.Future efforts should be made on strengthening maintenance and inspection of equipment,enhancing sys-tem supervisory mechanisms,and optimizing training systems to ensure dental treatment safety.

Objective:By sequencing and analyzing the biliary flora by 16S rDNA high-throughput sequencing technology,to identify the main flora associated with gallbladder stone formation and the main flora regulated by the Dahuang lingxian(DHLX),pre-liminary investigation the effect of DHLX on the biliary flora.Methods:The 50 male guinea pigs were randomly divided into Normal group,Model group,DHLX group.There were 15 guinea pigs in the normal group and 20 guinea pigs in the DHLX group,and 20 guin-ea pigs in the model group:the guinea pig model of gallstone was replicated with high-fat lithogenic diet,which was simultaneously ad-ministrated by gavage.After continuous intervention for 8 weeks,bile and gallbladder tissue samples were collected,and the gallstone formation rate of guinea pigs in each group was calculated,the pathological morphological changes of gallbladder tissue were detected by HE,T-CHO,TBA,LPS,IL-6,TNF-α were detected by ELISA,and the changes of biliary flora were detected by 16S rDNA;the correlation between biliary flora and bile index was detected by Pearson statistical method.Results:The stone formation rate of guinea pigs in the normal group was 8.3%,the rate of model stone composition was 90.8%,and the stone composition rate of DHLX group was 36.4%,and the HE staining results showed that compared with the normal group,the mucous membrane of the guinea pig in the model group was thickened,the columnar epithelial cells were arranged in a large number of inflammatory cells,and the columnar epi-thelial cells of the gallbladder mucosa in the chinese medicine group were arranged neatly compared with the model group,the thick-ness of the mucosa was reduced compared with the model group,and some inflammatory cells were infiltrated;ELISA results showed that compared with the normal group,the expressions of T-CHO,LPS,IL-6 and TNF-α in the bile of guinea pigs in the model group were significantly increased(P<0.01),while the content of TBA was significantly reduced(P<0.01);compared with the model group,the expression of LPS and IL-6 in the bile of the DHLX group were significantly reduced(P<0.01).The results of 16S rDNA showed that compared with the normal group the Ace index and Chao1 index of the model group were significantly reduced(P<0.01),and the Chao1 index of the DHLX group was significantly higher than that of the model group(P<0.05);biliary flora at the genera level was mainly composed of Burkholderia,Sphingomycetes,Breghamus,Delfortella,Pseudomonas;correlation analysis showed that total cholesterol was negatively correlated with the abundance of Methyloversatilis(P<0.05),and total bile acids were positively corre-lated with the abundance of Burkholderia(P<0.05),and Pseudomonas erythrocytes,Rhizobia,the abundance of Phreatobacter was negatively correlated(P<0.01)and LPS was positively correlated with the abundance of Pseudomonas erythrocytes(P<0.01).Conclu-sion:Biliary microflora disorder exists in the formation of biliary stones,and biliary microflora may participate in the formation of stones by regulating cholesterol,bile acids and LPS.DHLX can regulate the changes in the abundance of the microflora,make the structure of the microflora become normal,reduce the inflammation of the gallbladder,and prevent the formation of gallstones.

Objective To investigate the association between dietary behavior and mild cognitive impairment(MCI)in older adults,and to further analyze the role of cardiometabolic comorbidities in this relationship.Methods A total of 6599 older adults were recruited from 3 communities and 48 villages in Dawu County between 2018 and 2023 as part of the Hubei Elderly Memory Cohort Study.Dietary behaviors were assessed using a food frequency questionnaire and a dietary behavior questionnaire.Latent class analysis was performed to categorize the participants into healthy eat-ing behavior(HEB),sub-healthy eating behavior(SHEB),and unhealthy eating behavior(UEB).Cardiovascular-metabolic diseases were diabetes,hypertension,coronary heart disease,and cere-brovascular disease,which all diagnosed by physicians.MCI was diagnosed by a team of clinical experts according to Peterson's criteria.Multivariable logistic regression model was used to ana-lyze the impact of cardiometabolic comorbidities on the association between dietary behavior and MCI.Results The morbidity rate of MCI was 24.3％,and that of HEB,SHEB and UEB was 16.6％,24.3％and 31.3％,respectively.The incidence of MCI was higher in the participants who were female,over ≥75 years old,unmarried,and lack physical exercise,SHEB and UEB groups,had low educational level,lived in rural areas,had no stable income,had abnormal BMI,and more types of cardiometabolic diseases(P＜0.05,P＜0.01).After adjusting for confounders,multivari-able logistic regression analysis indicated that both UEB(OR=1.220,95％CI:1.004-1.418,P=0.045)and SHEB(OR=1.592,95％CI:1.345-1.883,P=0.001)were positively correlated with MCI risk in older adults.Further stratified analysis by cardiometabolic comorbidities revealed that for the patients in the HEB group,those suffering from hypertension+diabetes+coronary heart disease had the highest risk for MCI(OR=4.220,95％CI:1.913-9.309,P=0.001),while for the SHEB group,the following comorbidities were significantly associated with increased MCI risk:hypertension+diabetes(OR=1.640,95％CI:1.157-2.322,P=0.005),hypertension+cerebro-vascular disease(OR=1.454,95％CI:1.041-2.031,P=0.028),hypertension+diabetes+cere-brovascular disease(OR=2.064,95％CI:1.246-3.419,P=0.005),and hypertension+diabetes+coronary heart disease+cerebrovascular disease(OR=1.974,95％CI:1.036-3.760,P=0.039).Conclusion Older adults with SHEB or UEB have a higher risk of developing MCI,and the pres-ence of cardiometabolic comorbidities further exacerbates this risk.

Objective To provide reference for the clinical use of Baihui acupoint(GV20)in treating diseases,the rules of clinical application of GV20 in ancient literature through data mining technology was analyzed.Methods"Zhong Hua Yi Dian"was searched by computer for relevant papers involving GV20 in the main treatment of illnesses,the main treatment of illnesses by combining other acupoints,and the treatment methods.After organizing the included articles into a database,Microsoft Excel 2021 was used to analyze the frequency of diseases and the use of acupoint pairing,attribution to meridians and special points,and IBM SPSS STATISTIC 27 software was used to analyze the cluster analysis of high-frequency compatible acupoints.Results Valid prescriptions from 209 medical books,including Zhen Jiu Da Cheng(The Great Compendium of Acupuncture and Moxibustion),containing 311 compatible acupoints,were screened and summarized.The main treatment conditions of GV20 mainly included internal medicine,surgery,gynecology,pediatrics and other disciplines,with the brain and liver and gallbladder systems of internal medicine as the main diseases.The top 5 frequency acupoints were Quchi(LI11),Hegu(LI4),Shenting(GV24),Zusanli(ST36),and Shangxing(GV23),and the most frequently involved meridians were Bladder Meridian of Foot-Taiyang,Governor Vessel,and Gallbladder Meridian of Foot-Shaoyang.The compatible acupoints mainly distributed in the head and neck.The special points with the highest frequency of collocation were Five-Shu acupoints,confluent acupoints,and Back-Shu acupoints.In the cluster analysis,the icicle diagram showed 2 effective clusters and the dendrogram 4 clusters of acupoints.Conclusion The main treatment range of GV20 in ancient medical texts is wide,and the main treatment range can be enlarged by pairing,emphasizing the use of moxibustion,which can provide a reference for modern clinical treatment.

The aim of this research was to investigate the mechanism of chelidonine on H2 O2-in-duced inflammatory injury in porcine intestinal epithelial cells(IPEC-J2)through transcriptome sequencing.IPEC-J2 cells in the logarithmic growth phase were divided into the blank group(K group),H2O2 group(S group)and chelidonine group(L group),with three replicates in each group.Total RNA was isolated from each group for the purpose of constructing a sequencing li-brary.The assembled data underwent functional annotation,differential gene analysis,as well as GO and KEGG enrichment analyses.qPCR was used to confirm the expression of key differentially expressed genes(DEGs),and ELISA was utilized to assess the effect of chelidonine on the permea-bility of IPEC-J2 cells.The results indicated that the sequencing data met the necessary criteria and demonstrated a strong correlation between samples.The GO functional annotation results suggest that the intervention effects of chelidonine involve biological processes such as oxidative stress re-sponse and G2/M phase transition regulation of the mitotic cycle,and are closely associated with molecular functions,such as transmembrane transport activity.The KEGG enrichment analysis indicates that following H2 O2 treatment,DEGs in IPEC-J2 cells are predominantly enriched in the p53 signaling pathway,the coagulation cascade,the FoxO signaling pathway,and various other sig-naling pathways.Following pretreatment with chelidonine,the DEGs exhibit significant enrichment in several signaling pathways related to inflammation,including the TNF signaling pathway,syn-aptic vesicle cycle,and IL-17 signaling pathway.The results of qPCR were consistent with the se-quencing results.Chelidonine has also been found to effectively inhibit LDH release,elevate GLN content,and decrease DOA content.In conclusion,it can be seen that chelidonine can reduce cell permeability and alleviate H2 O2-induced inflammatory injury in IPEC-J2 cells by modulating in-flammation-related pathways such as the TNF signaling pathway.