The industry standard Barium Sulfate Anti-Radiation Mortar (JC/T 2676—2022) was officially released on September 30, 2022, and came into effect on April 1, 2023. The promulgation and implementation of this standard play a significant role in improving the product quality of barium sulfate anti-radiation mortar, promoting industry development, and safeguarding the occupational health of workers. To facilitate accurate understanding of the standard clauses and ensure proper implementation of its requirements, this article elaborated on the background, objectives, and significance of the standard development, along with an interpretation of its key clauses.

To thoroughly implement the strategic deployment outlined in the Opinions of the Central Committee of the Communist Party of China and the State Council on Promoting the Inheritance and Innovative Development of Traditional Chinese Medicine regarding research on dominant diseases of traditional Chinese medicine and to uphold the development philosophy of equal emphasis on traditional Chinese medicine and western medicine，the China Association of Chinese Medicine has fully played a leading academic role by systematically organizing and conducting a series of academic youth salons on clinical dominant diseases of traditional Chinese medicine. On September 13，2024，the 36^th Youth Salon on Clinical Dominant Diseases was successfully held in Nanjing，focusing on the advantages of traditional Chinese medicine and the integrative traditional Chinese medicine and western medicine in the diagnosis and treatment of erectile dysfunction （ED）. The conference brought together leading experts from traditional Chinese medicine，western medicine，and interdisciplinary fields，facilitating in-depth multidisciplinary discussions that led to key consensus on optimizing traditional Chinese medicine treatment protocols for ED，researching and developing new drugs of traditional Chinese medicine，and advancing interdisciplinary development in traditional Chinese medicine. This salon systematically sorted out the clinical strengths and distinctive features of traditional Chinese medicine in the diagnosis and treatment of ED. Based on current research foundations and clinical needs，it identified key directions for future scientific layout and scientific research tackling： （1） Standardization of syndrome differentiation system of traditional Chinese medicine for ED. （2） Optimization and standardization of intervention methods of integrated traditional Chinese medicine and western medicine. （3） High-quality clinical research guided by evidence-based medicine. （4） In-depth analysis of the pharmacological mechanisms of traditional Chinese medicine in the treatment of ED. （5） Clinical translation and application promotion of new drugs of traditional Chinese medicine. （6） Interdisciplinary integration and innovation in traditional Chinese medicine. For each research direction，key focus areas，expected objectives，and clinical value were further refined，along with the establishment of a scientifically sound priority funding level evaluation system. Therefore，building on the series of salons on the ED-focused dominant diseases of traditional Chinese medicine，this paper provides standardized guidance for clinical practice of traditional Chinese medicine in ED management，effectively contributing to the high-quality development of traditional Chinese medicine. It serves as a valuable reference for national scientific and technological strategic layout， research and development decision-making in new drugs of traditional Chinese medicine，research topic planning，and clinical guideline formulation.

Early life is a critical window for nervous system development. Antibiotics can cause human exposure through multiple pathways, and exposure during this stage increases the risk of neurodevelopmental disorders (NDDs) in children, which has garnered widespread concern in the academic community. Currently, the characteristics of multi-pathway antibiotic exposure during early life and the empirical evidence linking such exposure to NDDs have yet to be systematically summarized. This review integrated domestic and international literature, summarized the current status of antibiotic exposure, analyzed its epidemiological associations with NDDs, and synthesized findings from animal studies and underlying mechanisms. Existing studies indicate that early life antibiotic exposure increases the probability of adverse outcomes in children, including autistic-like behaviors, anxiety, and mood disorders. Animal experiments further support a causal relationship, demonstrating that antibiotic intervention can disrupt offspring gut microbiota composition, impede central nervous system development, and induce abnormal phenotypes such as social deficits and learning/memory impairment. Dysregulation of the gut-brain axis, direct neurotoxicity of antibiotics, and activation of inflammatory immune responses constitute the core mechanisms underlying neurodevelopmental damage. Future research should advance refined exposure assessments to investigate the differential effects of antibiotic types and treatment durations, distinguish the health impacts of medical versus food/environmental sources, and elucidate the molecular targets and signaling pathways through which gut microbiota metabolites, such as short-chain fatty acids and bile acids, regulate neurodevelopment. Furthermore, extended follow-up into adolescence and adulthood is needed to evaluate the long-term neuropsychological outcomes, including depression and cognitive decline. Through interdisciplinary collaborative research, scientific support can be provided for the early identification and intervention of neurodevelopmental impairment risks associated with antibiotic exposure.

Objective To investigate the relationship between the threonine and tyrosine kinase(TTK)gene and eyelid basal cell carcinoma(BCC).Methods Bioinformatics methods were used to screen the core gene(namely,TTK)associated with the occurrence and development of BCC from the Gene Expression Omnibus(GEO)database.Surgically removed eyelid BCC tissue specimens(BCC cells were divided into BBC Grade Ⅰ,Ⅱ and Ⅲ groups by tumor grade)and be-nign tumor tissue specimens(Control group)were collected from Ziyang Central Hospital for subsequent experiments.Cel-lular immunofluorescence assay(CIA)was used to detect the expression of the TTK gene in benign and malignant eyelid tumor cells.After knocking down TTK in BCC cells through transfection with lentiviruses(the cells transfected with LV-TTK-shRNA were taken as the TTK-shRNA group,and those transfected with LV-BBC-shRNA were taken as the BBC nega-tive control group),CIA was used to detect the expression of key proteins Bcl-2 and Bax in the apoptotic signaling pathway of each group of cells.Results The bioinformatics analysis showed that the TTK gene was the core gene associated with the occurrence and development of eyelid BCC.CIA detection results revealed that the fluorescence signal intensities in the tumor cytoplasm of Control,BCC Grade Ⅰ,Ⅱ,and Ⅲ groups were 1.03±0.07,1.28±0.11,1.58±0.13 and 1.92±0.17,respectively.The fluorescence signal intensity gradually increased,and the difference in fluorescence signal intensity among the four groups was statistically significant(all P＜0.05).Compared with that in the Control group(1.02±0.05),the cell fluorescence intensity was increased in the BCC negative control group(1.74±0.12)and decreased in the TTK-shRNA group(1.31±0.09)(P＜0.05).The difference in cell fluorescence intensity was significant among the Control,BCC nega-tive control and TTK-shRNA groups(all P＜0.05).The fluorescence intensity of the anti-apoptotic protein Bcl-2 was 1.04±0.12 in the Control group,2.12±0.23 in the BCC negative control group,and 1.43±0.15 in the TTK-shRNA group.The fluorescence intensity of the pro-apoptotic protein Bax was 1.02±0.08 in the Control group,0.64±0.11 in the BCC negative control group,and 1.47±0.16 in the TTK-shRNA group.After TTK knockdown,the expression level of BcL-2 in BCC cells decreased,and that of Bax increased.The fluorescence intensities of BcL-2 and Bax were significantly different among the Control,BCC negative control and TTK-shRNA groups(all P＜0.05).Conclusion The TTK gene plays a role in the regulation of eyelid BCC cell proliferation,and this effect is closely related to the PI3K-AKT-Bcl-2/Bax signaling path-way.

Objective:To explore the relationship between parenting styles of toddlers aged 30 months and attention deficit hyperactivity disorder (ADHD) symptom trajectories in preschool children.Methods:The subjects were 2 111 children and their parents in Ma'anshan Birth Cohort. Parenting styles were assessed at 30 months of age using the Brief Toddler Parenting Style Questionnaire, which defines parenting styles on four dimensions: warmth and interaction, attention and acceptance, outdoor and social activities, and neglect and restrictions. The Chinese version of the Conners Abbreviated Symptom Questionnaire was used to examine preschooler's ADHD symptoms aged 3, 5, and 6 years. ADHD symptom trajectories were fitted using group-based trajectory modeling. The multinomial logistic regression model was used to evaluate the relationship between parenting styles at 30 months of age and ADHD symptom trajectories in children. The additive and multiplicative models were applied to analyze the interaction effect of negative parenting styles in children's ADHD symptom trajectories.Results:ADHD symptom trajectories in children included the low-score (48.3%), moderate-score (47.7%), and high-score groups (4.0%). After adjusting for the confounding factors, the results of the multinomial logistic regression analysis showed that negative parenting styles of the father/mother were associated with ADHD symptom trajectories in children ( P<0.05). The father/mother's low warmth and interaction (father: OR=2.07,95% CI:1.68-2.54; mother: OR=2.02,95% CI:1.64-2.48), low attention and acceptance (father: OR=1.94,95% CI:1.57-2.39; mother: OR=1.47,95% CI:1.20-1.81), low outdoor and social (father: OR=1.74,95% CI:1.43-2.13; mother: OR=1.60,95% CI:1.32-1.94), and high neglect and restriction (father: OR=2.09,95% CI:1.67-2.62; mother: OR=2.06,95% CI:1.65-2.56) were associated with ADHD symptom moderate-score trajectories compared to the low-score trajectory group, mother's low warmth and interaction, low outdoor and social, and high neglect and restrictions. Statistically significant association was seen in negative parenting styles of fathers with the high-score group. There was a multiplicative interaction for hostile parenting ( P<0.05). The additive interaction results showed that there was a synergistic effect of hostile parenting, which increased the risk of the high-score trajectories of ADHD symptoms in children. Conclusions:Both parents' parenting styles influenced ADHD symptom change the trajectories in preschoolers. Negative parenting styles of the father/mother increase the risk of the moderate-score and high-score trajectories of ADHD symptoms in children. Hostile parenting by both parents has a synergistic impact on the risk of ADHD symptom trajectories in children, and the simultaneous presence of both increases the risk of the high-score trajectory of ADHD symptoms.

Objective To propose a decision tree-based optimization algorithm to shorten the time spent and to improve the decision-making efficiency for medical device fault diagnosis.Methods Firstly,a binarized fault state space for medical equipment was constructed;secondly,the binarized fault state space was simplified with logical functions;finally,a greedy algorithm was applied to iterative judgment to build a decision tree for medical device fault diagnosis.The algorithm proposed was compared with the greedy algorithm,Gini coefficient method and random forest algorithm in terms of the result accuracy and time cost and the influences of fault probability distribution and time-consuming differences for the algorithms.A case study on gastric lavage machine fault diagnosis was conducted to demonstrate the algorithm.Results The algorithm proposed behaved better than the greedy algorithm,Gini coefficient method and random forest algorithm in lowered time cost and result accuracy.However,the algorithm showed a decrease in accuracy for the logarithmic distribution of the detection method's time consumption,and it was not sensitive to the changes in the failure rate distribution.The gastric lavage machine case study demonstrated that the algorithm was functionally similar to an experienced engineer.Conclusion The proposed algorithm with overall perspective effectively enhances fault judgment efficiency and facilitates rapid diagnostic decision-making in medical equipment maintenance.[Chinese Medical Equipment Journal,2025,46(5):78-83]

Background and Aims:Single-incision laparoscopic cholecystectomy(LC)has become increasingly popular due to its minimal invasiveness and cosmetic advantages,but challenges remain in biliary identification and limited operative space.Indocyanine green(ICG)fluorescence navigation enables real-time visualization of the biliary tract and may enhance surgical safety and efficiency.This study aimed to evaluate the clinical application value of ICG fluorescence navigation in single-incision LC.Methods:A retrospective analysis was conducted on 59 patients with benign gallbladder diseases who underwent elective single-incision LC at Yixing Hospital affiliated to Jiangsu University from January 2023 to December 2024.Patients were divided into a fluorescence group(n=27)and a white-light group(n=32)according to whether ICG fluorescence navigation was applied.The two groups were compared in terms of Calot's triangle dissection time,operative time,intraoperative blood loss,surgeon satisfaction,hospital stay,and postoperative complications.Results:No significant differences were observed in baseline clinical characteristics between the two groups(all P＞0.05).In the fluorescence group,the cystic duct,common hepatic duct,and common bile duct were all successfully visualized.Compared with the white-light group,the fluorescence group had significantly shorter Calot's triangle dissection time[(25.56±3.49)min vs.(38.81±5.59)min],shorter operative time[(44.67±3.06)min vs.(61.31±4.96)min],and less intraoperative blood loss[(13.44±1.70)mL vs.(14.50±2.11)mL](all P＜0.05),with significantly higher surgeon satisfaction(P＜0.05).No intraoperative bile duct injury,conversion to three-port surgery,or postoperative complications occurred in either group.Conclusion:ICG fluorescence navigation can significantly improve biliary identification efficiency in single-incision LC,shorten operative time,reduce blood loss,and enhance surgeon satisfaction,demonstrating promising clinical application prospects.

The medical ultrasonic nebulizer was introduced in terms of composition,working principle and testing principle and method of the maximum nebulization rate.The testing characteristics of the volumetric and gravimetric methods were compared.A series of experiments were conducted using the whole-unit gravimetric approach.The initial liquid charge was indicated to be the primary factor affecting the maximum nebulization rate,and the influence increased significantly when the nebulizer's nominal volume got expanded.References were provided for medical testing staffs in selecting testing methods.

AIM:To investigate how the stearoyl-CoA desaturase-1(SCD1)inhibitor CAY-10566 induc-es ferroptosis in oral squamous cell carcinoma(OS-CC)cells and enhances their sensitivity to cisplatin,with preliminary exploration of the underlying mo-lecular mechanisms.METHODS:Bioinformatics analysis and clinical specimens were used to evalu-ate SCD1 expression in OSCC tissues.OSCC cell lines(Cal27 and HSC3)were treated with CAY-10566,cis-platin,the ferroptosis inhibitor Ferrostatin-1(Fer-1),or their combinations.Cell viability was assessed using the CCK-8 assay,while reactive oxygen spe-cies(ROS)and lipid ROS levels were measured by flow cytometry.Malondialdehyde(MDA)and re-duced glutathione(GSH)levels were quantified us-ing commercial assay kits.Western blotting was performed to analyze the protein expression of glu-tathione peroxidase 4(GPX4),mechanistic target of rapamycin(mTOR),mature sterol regulatory ele-ment-binding protein 1(m-SREBP1),SCD1,and heme oxygenase 1(HMOX1).RESULTS:SCD1 was significantly overexpressed in OSCC tissues(P＜0.01).Combined treatment with CAY-10566 and cis-platin markedly reduced OSCC cell viability(P＜0.01)and increased lipid peroxidation(P＜0.001),while suppressing GPX4 expression-effects that were re-versed by Fer-1(P＜0.001).CAY-10566 upregulated HMOX1 expression and inhibited mTOR,m-SREBP1,and SCD1 protein levels(P＜0.001).CONCLUSION:CAY-10566 promotes ferroptosis and cisplatin sensi-tivity in OSCC cells,potentially through HMOX1 up-regulation and suppression of the mTOR/SREBP1/SCD1 axis.

AIM:To investigate how the stearoyl-CoA desaturase-1(SCD1)inhibitor CAY-10566 induc-es ferroptosis in oral squamous cell carcinoma(OS-CC)cells and enhances their sensitivity to cisplatin,with preliminary exploration of the underlying mo-lecular mechanisms.METHODS:Bioinformatics analysis and clinical specimens were used to evalu-ate SCD1 expression in OSCC tissues.OSCC cell lines(Cal27 and HSC3)were treated with CAY-10566,cis-platin,the ferroptosis inhibitor Ferrostatin-1(Fer-1),or their combinations.Cell viability was assessed using the CCK-8 assay,while reactive oxygen spe-cies(ROS)and lipid ROS levels were measured by flow cytometry.Malondialdehyde(MDA)and re-duced glutathione(GSH)levels were quantified us-ing commercial assay kits.Western blotting was performed to analyze the protein expression of glu-tathione peroxidase 4(GPX4),mechanistic target of rapamycin(mTOR),mature sterol regulatory ele-ment-binding protein 1(m-SREBP1),SCD1,and heme oxygenase 1(HMOX1).RESULTS:SCD1 was significantly overexpressed in OSCC tissues(P＜0.01).Combined treatment with CAY-10566 and cis-platin markedly reduced OSCC cell viability(P＜0.01)and increased lipid peroxidation(P＜0.001),while suppressing GPX4 expression-effects that were re-versed by Fer-1(P＜0.001).CAY-10566 upregulated HMOX1 expression and inhibited mTOR,m-SREBP1,and SCD1 protein levels(P＜0.001).CONCLUSION:CAY-10566 promotes ferroptosis and cisplatin sensi-tivity in OSCC cells,potentially through HMOX1 up-regulation and suppression of the mTOR/SREBP1/SCD1 axis.