Objective: To understand the dynamic temporal evolution pathways of Internet addiction among university students and to identify the core driving nodes, so as to provide theoretical evidences for the precise implementation of targeted interventions. Methods: Using a convenient cluster sampling method, a total of 1 066 full time freshmen and sophomores were recruited from three universities in Guizhou, Jiangxi, and Guangdong Provinces for a follow up survey (T1:January-March 2024; T2:January-March 2025). The Revised Chen Internet Addiction Scale (CIAS-R) was employed to assess the status of Internet addiction among university students, and cross sectional as well as cross lagged panel network models were constructed to analyze Internet addiction and its multidimensional influencing factors. Results: The T1 network comprised 19 nodes and 114 non zero edges, while the T2 network comprised 19 nodes and 126 non zero edges. Cross sectional network analysis revealed the strongest association between "insufficient sleep" and "daytime fatigue"; the core nodes were "first thought upon waking for going online" and "feeling low after disconnection" (characteristics of psychological dependence) at T1, while the core nodes shifted to "impaired health" and "excitement when online" (characteristics of functional impairment and addictive psychodynamic features) at T2. Cross lagged network analysis further indicated that "reduced leisure" directly predicted "sleep compression", and a bidirectional relationship was observed between "needing more time to achieve satisfaction" and "academic decline". Conclusions Internet addiction among university students exhibits dynamic evolutionary characteristics. Stage specific targeted interventions focusing on core driving nodes are needed, integrating behavioral regulation and academic support to break the vicious cycle and enhancing the ability to cope with real life demands.

BACKGROUND:THZ1,an inhibitor of cyclin-dependent kinase 7,has been shown to inhibit the proliferation of a variety of tumor cells,but whether THZ1 can affect the stemness of glioma stem cells through the Wnt/β-catenin signaling pathway remains unclear.OBJECTIVE:To investigate the effect of THZ1 on stemness of glioma cell U87 and its mechanism.METHODS:U87 adherent cells were cultured to form stem cell mammospheres.The expressions of stemness related proteins were verified by western blot assay.The effect of THZ1 on half maximal inhibitory concentration(IC50)of U87 cells was determined by Cell Counting Kit-8(CCK-8)assays.The effects of THZ1 on proliferation and migration of U87 cells were determined by cell colony-formation assays,cell wound healing assays,and Transwell migration assays.The effect of THZ1 treatment on mammosphere forming rate and mammosphere size of U87 stem cells was analyzed.Stemness associated proteins CD133,ABCG2,Nanog,OCT4,SOX2,epithelial-mesenchymal transformation-related proteins E-cadherin,N-cadherin,Occludin,Snail,and Wnt/β-catenin pathway associated proteins Axin1,β-Catenin,WNT-5A,GSK3β,Cyclind-1,and C-myc were measured by western blot assay.RESULTS AND CONCLUSION:(1)Compared with adherent cells,the expressions of stemness related proteins Nestin,CD133,ABCG2,Nanog,OCT4,and SOX2 were significantly increased.(2)Compared with the control group,THZ1 decreased the proliferation and migration of U87 cells.(3)THZ1 inhibited the mammosphere forming rate and mammosphere size of U87 stem cells.(4)After THZ1 treatment,the expression of N-cadherin and Snail decreased,while the protein expression of E-cadherin and Occludin increased.(5)THZ1 treatment decreased the expression of Wnt/β-catenin pathway related proteins Axin1,β-Catenin,Wnt-5A,GSK3β,Cyclind-1,and C-myc in U87 stem cells.It is concluded that THZ1 can suppress the proliferation and migration of U87 cells,and inhibit the mammosphere forming ability,stemness related protein expression,and epithelial-mesenchymal transformation ability of U87 stem cells by down-regulating the expression of Wnt/β-catenin signaling pathway related molecules.

BACKGROUND:THZ1,an inhibitor of cyclin-dependent kinase 7,has been shown to inhibit the proliferation of a variety of tumor cells,but whether THZ1 can affect the stemness of glioma stem cells through the Wnt/β-catenin signaling pathway remains unclear.OBJECTIVE:To investigate the effect of THZ1 on stemness of glioma cell U87 and its mechanism.METHODS:U87 adherent cells were cultured to form stem cell mammospheres.The expressions of stemness related proteins were verified by western blot assay.The effect of THZ1 on half maximal inhibitory concentration(IC50)of U87 cells was determined by Cell Counting Kit-8(CCK-8)assays.The effects of THZ1 on proliferation and migration of U87 cells were determined by cell colony-formation assays,cell wound healing assays,and Transwell migration assays.The effect of THZ1 treatment on mammosphere forming rate and mammosphere size of U87 stem cells was analyzed.Stemness associated proteins CD133,ABCG2,Nanog,OCT4,SOX2,epithelial-mesenchymal transformation-related proteins E-cadherin,N-cadherin,Occludin,Snail,and Wnt/β-catenin pathway associated proteins Axin1,β-Catenin,WNT-5A,GSK3β,Cyclind-1,and C-myc were measured by western blot assay.RESULTS AND CONCLUSION:(1)Compared with adherent cells,the expressions of stemness related proteins Nestin,CD133,ABCG2,Nanog,OCT4,and SOX2 were significantly increased.(2)Compared with the control group,THZ1 decreased the proliferation and migration of U87 cells.(3)THZ1 inhibited the mammosphere forming rate and mammosphere size of U87 stem cells.(4)After THZ1 treatment,the expression of N-cadherin and Snail decreased,while the protein expression of E-cadherin and Occludin increased.(5)THZ1 treatment decreased the expression of Wnt/β-catenin pathway related proteins Axin1,β-Catenin,Wnt-5A,GSK3β,Cyclind-1,and C-myc in U87 stem cells.It is concluded that THZ1 can suppress the proliferation and migration of U87 cells,and inhibit the mammosphere forming ability,stemness related protein expression,and epithelial-mesenchymal transformation ability of U87 stem cells by down-regulating the expression of Wnt/β-catenin signaling pathway related molecules.

Objective:To construct an indicator system for the development of nursing disciplines in ClassⅢ Grade A general hospitals.Methods:An initial draft of the indicator system was established through literature research and expert meetings. The Delphi method and purposive sampling were used from January to April 2023 to conduct two rounds of expert consultations with 17 nursing experts from four medical units nationwide and three nursing colleges. The indicators were revised and refined, resulting in the establishment of a nursing discipline construction indicator system for ClassⅢ Grade A general hospitals. The level of expert engagement was represented by the questionnaire recovery rate, expert authority by the expert authority coefficient ( Cr), and the degree of expert opinion coordination by Kendall 's harmony coefficient (Kendall 's W) . Results:The recovery rates for both rounds of expert consultation questionnaires were 100.00% (17/17), with expert Cr of 0.87. The CV values ranged from 0.049 to 0.260 and 0 to 0.140, respectively, while Kendall 's W were 0.221 and 0.257 ( P< 0.01). The final indicator system for the construction of nursing disciplines in ClassⅢ Grade A general hospitals included six primary indicators, 18 secondary indicators, and 63 tertiary indicators. Conclusions:The nursing discipline construction indicator system developed for ClassⅢ Grade A general hospitals in this study is scientific, reliable, and comprehensive. It can provide a reference for the construction of nursing disciplines in Class Ⅲ Grade A general hospitals.

OBJECTIVE： To study the protective effects of Polygonum orientale extract on myocardial ischemia-reperfusion injury （MIRI） model rats， and to provide reference for it’s deeply development of medicinal source. METHODS： Totally 24 rats were randomly divided into sham operation group （normal saline）， model group （normal saline）， Compound danshen tablet group （positive group， 0.17 g/kg） and P. orientale extract group （86 g/kg， calculated by crude drug）， with 6 rats in each group. All groups were given drugs 2 mL/100 g intragastrically once a day. After 4 d of consecutive administration， MIRI model was induced by the left anterior descending branch of arteria coronaria in all groups except for sham operation group. 24 h after reperfusion， they were given related medicine again. After medication， the changes of electrocardiogram ST segment were monitored in each group. The plasma levels of LDH， CK-MB， CK， cTn-I， SOD and NO were detected in each group. The myocardial infarction rate in each group was calculated and the pathomorphological changes in the myocardium were observed. RESULTS： Compared with sham operation group， ST segment of myocardial electrocardiogram was increased in model group （P＜0.01）. The plasma levels of LDH， CK， CK-MB and cTn-I were increased significantly （P＜0.01）， while the plasma levels of SOD and NO were decreased significantly （P＜0.01）. The rate of myocardial infarction was increased significantly （P＜0.01）， and pathomorphological changes were observed in myocardial tissue such as infiltration of inflammatory cells and loose cytoplasm of cardiac myocytes. Compared with model group， ST segment of myocardial electrocardiogram was decreased significantly in Compound danshen tablet group and P. orientale extract group （P＜0.05）； the plasma levels of LDH， CK， CK-MB and cTn-I were decreased significantly （P＜0.05）， while the plasma levels of SOD and NO were increased significantly （P＜0.05）； the rate of myocardial infarction was decreased significantly （P＜0.05）， and inflammatory cell infiltration and tissue edema in myocardium were relieved to varying degrees. CONCLUSIONS： The protective effect of P. orientale extract protect on MIRI may be exerted by anti-oxidative damage.

Objective To compare the effectiveness of microwave thermosphere ablation( M T A ) and traditional microwave ablation( M WA ) in ex v ivo bovine livers ,and to compare the degree of the heat sink effect in them .Methods T he non‐vessel model and vessel model were established using fresh bovine livers . In non‐vessel model ( n ＝ 48 ) ,the same power‐time settings were used in both M T A group and MWA group ,w hich were 80 W 12 min ,90 W 10 min and 100 W 10 min ,respectively . Long‐axis diameter ( Dl) , short‐axis diameter( Ds1 ,Ds2) ,roundness index ( R) and the time of temperature rising to 60℃ at place of 10 mm from the needle were measured .In vessel model( n ＝144) ,different vessel diameters( 3 mm ,5 mm ,10 mm) and flow rates ( 15 cm/s ,20 cm/s ,30 cm/s) were setted . The maximum radius( Rmax) ,total area of ablation zone( Sz ) ,and the area difference ( Sdiff ) were analyzed ,the temperatures adjacent to the vessel were monitored simultaneously . Results In non‐vessel model ,with the same power and time settings ,the Dl of M T A group was significantly smaller than MWA group ( P ＜ 0 .01 ) , however , there was no significant difference of Ds1 and Ds2 between the two groups( P ＞0 .05) . And M T A group created more spherical ablation zones ,since the R of M T A group were more close to 1 ( P ＜0 .01) . In M T A group ,the time of temperature rising to 60 ℃ at place of 10 mm from the needle was slower than MWA group ( P ＜0 .01) . In vessel model ,the Sdiff of M T A group were hardly affected by the vessel diameters and flow rates ( P ＞0 .05) ,and there was also no statistical significance among different flow rates( P ＞0 .05 ) in M WA group ,but the Sdiff of M WA group was significantly affected by the vessel diameters( P ＜0 .01) . And the Sdiff of M T A group was significantly smaller than M WA group when the vessel diameter was 10 mm ( P ＜0 .05) ,while there was no statistical significance between the two groups w hen the vessel diameter was 3 mm or 5 mm( P ＞0 .05) . Conclusions Compared to M WA ,M T A can produce sizable ,regular and more spherical ablation lesions with the same power and time ,meanwhile ,it is less affected by the heat sink effect .

OBJECTIVETo explore common biological pathways for attention deficit hyperactivity disorder (ADHD) and low birth weight (LBW).

METHODSThei-Gsea4GwasV2 software was used to analyze the result of genome-wide association analysis (GWAS) for LBW (pathways were derived from Reactome), and nominally significant (P< 0.05, FDR< 0.25) pathways were tested for replication in ADHD.Significant pathways were analyzed with DAPPLE and Reatome FI software to identify genes involved in such pathways, with each cluster enriched with the gene ontology (GO). The Centiscape2.0 software was used to calculate the degree of genetic networks and the betweenness value to explore the core node (gene). Weighed gene co-expression network analysis (WGCNA) was then used to explore the co-expression of genes in these pathways.With gene expression data derived from BrainSpan, GO enrichment was carried out for each gene module.

RESULTSEleven significant biological pathways was identified in association with LBW, among which two (Selenoamino acid metabolism and Diseases associated with glycosaminoglycan metabolism) were replicated during subsequent ADHD analysis. Network analysis of 130 genes in these pathways revealed that some of the sub-networksare related with morphology of cerebellum, development of hippocampus, and plasticity of synaptic structure. Upon co-expression network analysis, 120 genes passed the quality control and were found to express in 3 gene modules. These modules are mainly related to the regulation of synaptic structure and activity regulation.

CONCLUSIONADHD and LBW share some biological regulation processes. Anomalies of such proces sesmay predispose to ADHD.

Attention Deficit Disorder with Hyperactivity ; etiology ; genetics ; Gene Ontology ; Gene Regulatory Networks ; Genome-Wide Association Study ; Humans ; Infant, Low Birth Weight

Objective In this study,we employed newborn hearing screening and gene screening concurrently to explore the hearing loss associated with mutations in the city of Jinan.Methods A total of 3 288 newborns born between March 2013 and December 2013 in Jinan Maternity and Child Care Hospital received hearing concurrent genetic screening.Transiently evoked otoacoustic emissions (TEOAE) was used in rooming-in newborns,while TEOAE and auto auditory brainstem response (AABR) was used in infants in neonatal intensive care unit (NICU).Two drops of heel blood were harvested with filter paper.Nine mutations [GJB2(235delC,35delG,299delAT,176del16),SLC26A4(IVS7-2A ＞ G,2168 A ＞ G),GJB3 (538 C ＞ T),12SrRNA (1555 A ＞ G,1494C ＞ T)] of 4 frequent genes associated with Chinese hearing loss were determined by gene chip in these dried blood samples.Results Among 3 288 newborns,363 cases failed to pass the hearing screening,and 36 cases of these 363 newborns carried mutations,with a carrier rate of 9.91％.2 925 cases passed the hearing screening,of which 113 carried mutations,with a carrier rate of 3.86％.There was a significantly statistic difference (x2 =8.67,P =0.000) in carrier rate between two groups.149(4.53％) infants were detected to carry at least one mutation allele,among which 113 cases passed the hearing screening and 36 cases failed.Seven cases were diagnosed to have hearing loss.Homozygous GJB2 mutation was detected in 2 cases,compound heterozygous GJB2 mutation was detected in 1 case,and heterozygous GJB2 mutation in 88 cases.There were 91 cases carried GJB2 mutations totally,with a total rate of 2.76％.There were 40 cases were detected to carry heterozygous SLC26A4 mutation,with a carrier rate of 1.22％.Nine cases had heterozygous GJB3 mutation,with a carrier rate of 0.27％.Six cases had homogeneous mitochondria 12SrRNA mutation,and 1 had heterogeneous mutations.There were 7 cases totally,with a total rate of 0.21％.142 infants with gene mutation should be follow-up.Conclusion A follow-up system in infants,passed hearing screening,with single heterozygous mutation and mutations associated with drug-induced hearing loss,can help to detect infants with hearing defects early and effectively prevent late-onset hearing impairment.

OBJECTIVETo study the value of rigid choledochoscope and pneumatic lithotripsy in targeting treatment of hepatolithiasis under the guidance of three-dimensional visualization technology.

METHODSThe 26 patients with hepatolithiasis from February 2012 to June 2013 were analyzed. There were 11 male and 15 female patients with a median age of 55.2 years (range 31-75 years old). The image data of CT scanning of hepatolithiasis were introduced into medical image three-dimensional visualization system (MI-3DVS) for three-dimensional reconstruction, 3D classifications of hepatolithiasis were obtained based on it. Applied rigid choledochoscope and pneumatic lithotripsy in targeting treatment of hepatolithiasis guided by three-dimensional visualization technology.

RESULTSThe 26 patients (29 times) experienced targeting treatment of rigid choledochoscope and pneumatic lithotripsy under the guidance of three-dimensional visualization technology, including:19 cases (4 cases of type IIc) through percutaneous biliary tract sinus, laparoscopic surgery 3 cases, laparotomy 4 cases. Three patients underwent surgery twice. The final stone clearance rate was 100%.One case confirmed combined with cholangiocarcinoma and transfer to radical resection.Intraoperative blood loss was (41.7 ± 8.5) ml, operating time was (100.8 ± 7.6) minutes, and postoperative hospital stay was (7.0 ± 0.6) days. A patient suffered postoperative biliary tract bleeding.Without bile duct injury, bleeding, bile leakage and other complications were occurred.

CONCLUSIONRigid choledochoscope and pneumatic lithotripsy in the treatment of hepatolithiasis under the guidance of three-dimensional visualization technology achieved digital minimally invasive treatment of hepatolithiasis, which can be a new approach to hepatobiliary surgery.

Adult ; Aged ; Bile Ducts, Intrahepatic ; surgery ; Cholelithiasis ; surgery ; Endoscopes ; Endoscopy ; instrumentation ; Female ; Humans ; Imaging, Three-Dimensional ; Lithotripsy ; methods ; Male ; Middle Aged ; Treatment Outcome

This paper described a rapid and se nsitive HPLC method to analyze (E)-3, 5,4'-trimethoxystilbene (BTM-0512) in rat plasma and tissues. The analysis used a BDS Hypersil C18 analytical column (250 mm×4.6 mm ID, 5 μm) and acetonitrile / water as the mobile phase. The UV detection wavelength was 319 nm. Proteins were precipitated with acetonitrile and diethylstilbestrol as internal standard. The method was validated according to State Food and Drug Administration of China and ICH of Technical Requirements for Registration of Pharmaceuticals for Human Use Guidelines. The limit of interday precision values (%RSD) were in the range of 2.6% -5.1% and 2.4% -4.8%, respectively.Mean accuracy and absolute recoveries of BTM-0512 ranged from 95.3% - 100. 1% and 95.9% -100.9% for plasma and tissues, respectively. This method can be quite useful for BTM-0512 pharmacokinetic and tissue distribution studies, for purpose which multiple plasma and tissue samples can be analyzed quickly with high reproducibility.