Background Co-exposure to noise and microwave radiation occurs frequently. The central nervous system has been identified as a sensitive target organ for both noise and microwave exposure individually, and the underlying mechanisms remain poorly understood. The specific biological effects resulting from co-exposure to these two factors have yet to be fully elucidated. Objective To clarify the effects of co-exposure to noise and microwave on neurobehavior and hippocampal tissue structure, and to explore the underlying mechanism through the assessment of serum cytokines. Methods C57BL/6N mice were selected and randomly assigned to a blank control group, a noise group, a microwave group, and a combined noise & microwave exposure group. To establish the exposure models, the noise group was subjected to broadband noise at 100 dB for 2 h, while the microwave group received radiation at a central frequency of 9.375 GHz with an average power density of 12 mW·cm⁻² and a specific absorption rate of 2.58 W·kg⁻¹ for 15 min. Open field and tail suspension tests assessed anxiety-like emotional behaviour; novel object recognition and Y-maze tests evaluated cognitive function. Histological changes in hippocampal tissue were examined using haematoxylin and eosin (HE) staining, and Nissl staining under light microscopy. Serum cytokine levels were measured using radioimmunoassay and enzyme-linked immunosorbent assay (ELISA). Results After 3 d of exposure, the noise, microwave, and combined exposure groups showed significant reductions in exploration frequency, duration, and distance within the central zone of the open field test compared to the control group (P < 0.01); the combined exposure group exhibited increased ratios of peripheral-to-central exploration time and distance (P < 0.05). After 7 d of exposure, compared with the control group, the noise group maintained a decrease in central zone exploration time (P < 0.01), while the combined exposure group showed persistent decline across all central zone metrics (P < 0.05) and elevated peripheral-to-central ratios (P < 0.05); compared to the microwave group, the combined exposure group showed significant less time in the central zone (P < 0.05) and higher peripheral-to-central ratios (P < 0.05). Regarding behaviour and cognition, compared with the control group, the combined exposure group showed increased immobility time in the tail suspension test after 3 d of exposure (P < 0.01). At this interval, all exposure groups demonstrated reduced frequency and duration of novel object recognition (P < 0.05), with the combined exposure group showing a marked decrease in novel arm exploration time (P < 0.01). After 7 d of exposure, compared with the control group, the noise group showed reduced novel object recognition frequency (P < 0.05), and both the noise and microwave groups exhibited decreased novel arm exploration time (P < 0.05). Pathological alterations including an increased number of hyperchromatic nuclei and depleted Nissl bodies were observed in the CA3 and DG regions across all exposure groups with the most severe lesions observed in the combined exposure group. Serum levels of central nervous system-specific protein β (S-100β), glial fibrillary acidic protein (GFAP), and corticosterone (CORT) were significantly elevated in all exposure groups compared with the control group (P < 0.05). Aquaporin-4 (AQP4) levels increased in the combined exposure group (P < 0.05), while CXC chemokine ligand 10 (CXCL10) levels rose in both the noise and combined groups compared with the control group (P < 0.05). Specifically, S-100β and CXCL10 levels in the combined exposure group were higher than those in the microwave group (P < 0.05); moreover, levels of S-100β, GFAP, CORT, AQP4, and CXCL10 in the combined exposure group were significantly higher than those in the noise group (P < 0.05). Conclusion Combined exposure to noise and microwave radiation induces pathological changes in the hippocampus of mice, increases levels of serum stress hormones and neuro-specific biomarkers. These impairments are more severe than those observed following single-factor exposure. The underlaying mechanism may be related to systemic stress response, neuronal damage, astrocyte activation, and changes in blood-brain barrier permeability, leading to emotional behavioral abnormalities and cognitive decline.

Objective To explore the safety of Yttrium-90 resin microsphere selective internal radiation therapy (⁹⁰Y-SIRT) on malignant liver tumors. Methods A retrospective analysis was conducted on 64 patients with malignant liver tumors who underwent ⁹⁰Y-SIRT from February 2023 to November 2024 at Weifang People’s Hospital. The clinical characteristics of the patients and the occurrence of adverse reactions after treatment were analyzed to assess the safety of ⁹⁰Y-SIRT. Results Among the 64 patients, there were 52 males (81.25%) and 12 females (18.75%); the average age was (56.29±11.08) years. Seven patients (10.94%) had tumors with maximum diameter of less than 5 cm, 38 patients (59.38%) had tumors with maximum diameter of 5-10 cm, and 19 patients (29.68%) had tumors with maximum diameter of greater than 10 cm. There were 47 cases (73.44%) of solitary lesions and 17 cases (26.56%) of multiple lesions; 53 cases (82.81%) were primary liver cancers and 11 cases (17.19%) were metastatic liver cancers. Of the 64 patients, 63 successfully completed the Technetium-99m macroaggregated albumin (^99mTc-MAA) perfusion test and received the ⁹⁰Y-SIRT; one patient received ⁹⁰Y-SIRT after the second ^99mTc-MAA perfusion test due to a work error. The most common adverse reactions included grade 1 alanine aminotransferase (ALT) elevation in 26 cases (40.62%) and grade 2 in 2 cases (9.37%), grade 1 aspartate aminotransferase (AST) elevation in 27 cases (42.18%) and grade 2 in 7 cases (10.93%); grade 1 nausea in 17 cases (26.56%) and grade 2 in 6 cases (9.37%); grade 1 abdominal pain in 12 cases (18.75%), grade 2 in 5 cases (7.81%), and grade 3 in 1 case (1.56%); grade 1 vomiting in 11 cases (17.18%), grade 2 in 5 cases (7.81%), and grade 3 in 1 case (1.56%). Conclusion The adverse reactions of ⁹⁰Y-SIRT for treating malignant liver tumors are mild, indicating good safety.

BACKGROUND:Post and core restoration is a common choice for tooth defects,but the repair effects of various post and core materials are different. OBJECTIVE:To evaluate the stress distribution at the post and core,tooth root,and bonding agent site of post and core models made of different elastic modulus post and core materials using finite element method. METHODS:A three-dimensional root canal treated maxillary central incisor model was built using three-dimensional modeling software,which was restored with a full ceramic crown.The post and core materials in the restoration used nanoceramic resin(elastic modulus=12.8 GPa),composite resin(elastic modulus=16 GPa),hybrid ceramic(elastic modulus=34.7 GPa),glass ceramic(elastic modulus=95 GPa),titanium alloy(elastic modulus=112 GPa),and zirconia(elastic modulus=209.3 GPa).The model was fixed in cortical bone.A 100 N concentrated force of 45° from the long axis of the tooth was applied to 1/3 of the crown and tongue side of the central incisor.The stress distribution of the post and core,dentin,and tooth-root bonding agent in the model was repaired by the maximum principal stress criterion. RESULTS AND CONCLUSION:(1)When the post and core materials with higher elastic modulus was used,the post-core stress in the repair model was more concentrated.When the elastic modulus of the post and core materials(nanoceramic resin and composite resin)was close to dentin,the stress distribution of the post and core was more uniform.The stress distribution of dentin in all restoration models was similar regardless of post and core materials.When the post and core with higher elastic modulus was used,more stress concentration was shown at the post and root bonding agent in the repair model.(2)The maximum stress values at the post and core,tooth root,and the bonding agent site of post and tooth root in the nanoceramic resin model were 31.00,33.21,and 0.51 MPa,respectively.The maximum stress values at the post and core,tooth root,and the bonding agent between the post and tooth root in the composite resin model were 36.84,33.14,and 0.59 MPa,respectively.In the mixed ceramic model,the maximum stress values at the post and core,tooth root,and the bonding agent between the post and tooth root were 64.05,32.83,and 1.00 MPa,respectively.In the glass ceramic model,the maximum stress values at the post and core,tooth root,and the bonding agent between the post and tooth root were 112.30,32.69,and 1.73 MPa,respectively.In the titanium alloy model,the maximum stress values of the post and core,tooth root,and the bonding agent between the post and tooth root were 120.00,32.17,and 1.86 MPa,respectively.In the zirconia model,the maximum stress values of the post and core,tooth root,and the bonding agent between the post and tooth root were 148.80,31.85,and 2.28 MPa,respectively.(3)The higher the elastic modulus of the post and core material,the higher the maximum stress at the post and core during restoration.The elastic modulus of the post and core material had no significant effect on the maximum stress of the dental bonding agent and dentin.

A systematic review of the traditional Chinese medicine （TCM） literatures published over the past decade on blood glucose fluctuations in diabetes mellitus was conducted to summarize related TCM research progress of theories and prescriptions， so as to provide references for future TCM theoretical exploration， basic research， and clinical prevention and treatment. Blood glucose fluctuation is an independent risk factor for chronic complications of diabetes mellitus， with significant progress made in TCM theories and prescription studies targeting this condition. The TCM theories include "spleen-pancreas homology"， "liver controlling dispersion"， "small intestine transforming qi and separating purity from turbidity"， "Yi Qi Zhou Liu theory"， "Xuan Fu Qi Ye theory"， "Yin-fire theory" and so on， all of which emphasize "Qi". Prescription studies primarily utilize clinical trials， which evaluate plentiful indexes of blood glucose fluctuation such as the mean amplitude of glycemic excursion. Classical and self-formulated prescriptions are widely used， with various dosage forms such as decoctions， granules and capsules. "Qi-Yin deficiency" is the main syndrome of blood glucose fluctuation. Basic research focuses on mechanisms that improve blood glucose fluctuation and reduce chronic complications， such as the renin-angiotensin system regulating islet β cell's function， and the transforming growth factor-β₁ inhibiting organ fibrosis. However， there are still some deficiencies in the evidential support and syndrome study of TCM theories， in the high-level evidence-based evaluation， efficacy comparison among multiple dosage forms， and the integration of TCM theories with prescription's clinical research， in the quantities， multi-level verifications， blood glucose fluctuation model establishment and intervention criteria as well as prescription-syndrome correspondence of prescription's basic research， and in the collaboration between clinical and basic research. Despite these challenges， TCM offers a promising approach to improving blood glucose fluctuation and reducing chronic complications in diabetes mellitus， with its rich theories， diverse methods， and proven efficacy.

Objective:To analyze the significance of ultrasound super microvascular imaging (SMI) combined with strain ratio (SR) in the differential diagnosis of benign and malignant breast masses.Methods:A total of 110 patients with breast masses (110 lesions) admitted to Jiande Branch of the Second Affiliated Hospital of Zhejiang University from October 2022 to November 2024 were retrospectively selected, including 65 benign masses (benign group) and 45 malignant masses (malignant group). Both groups received SMI and strain elastography (SE) examination. The clinical and ultrasonic parameters SMI blood flow signal grade, vascular index (VI), global SR (ESR), local SR (LSR) and other indicators of the two groups were compared, and the independent risk of breast tumor malignancy was screened by Logistic regression. Receiver operating characteristic (ROC) curve was used to analyze the value of SMI blood flow signal grading, VI and ESR combined detection in the differential diagnosis of breast tumor malignancy.Results:The proportion of irregular shape, unclear boundary, microcalcification, convergence sign and angulation sign in the malignant group were higher than those in the benign group: 80.00%(36/45) vs. 55.38%(36/65), 57.78%(26/45) vs. 33.85%(22/65), 44.44%(20/45) vs. 13.85%(9/65), 55.56%(25/45) vs. 9.23%(6/65), 60.00%(27/45) vs. 15.38%(10/65), there were statistical differences ( P<0.05). The SMI blood flow signal grade in the malignant group was higher than that in the benign group, the VI, ESR and LSR in the malignant group were higher than those in the benign group: (6.53 ± 0.68)% vs. (3.14 ± 0.36)%, 4.62 ± 0.48 vs. 2.53 ± 0.27, 31.45 ± 3.29 vs. 20.16 ± 2.35, there were statistical differences ( P<0.05). Logistic regression analysis showed that irregular shape, unclear boundary, microcalcification, SMI blood flow signal grade, VI and ESR were independent risk factors for malignant breast mass ( P<0.05). ROC curve analysis results showed that the sensitivity, specificity and accuracy of SMI blood flow signal classification, VI and ESR combined in predicting breast tumor malignancy were 84.26%, 83.17% and 87.65%, respectively, and the area under the curve was 0.896, which were higher than the results predicted by each index alone. Conclusions:There are certain characteristic changes of SMI in benign and malignant breast masses. SMI combined with SR has good value in differential diagnosis of benign and malignant breast masses.

Objective To explore the path of expanding the forms and optimizing the effects of children's health science popularization,further enhance the dissemination effect of science popularization,and improve children's health literacy.Meth-ods The WeChat public account of a tertiary pediatric hospital in Tianjin was selected as the research object.Using case analy-sis and data collection methods,statistics on the proportion of health science articles,the proportion of forms,reading volume,and other data were collected.Quantitative analysis was conducted on the dissemination effect of health science popularization.Strategies were proposed based on the problems reflected in the data.Results In this study,184 articles were studied,and 61 science popularization articles were analyzed in depth.In terms of science content,there were 2 articles with a total reading vol-ume of over 100 000.The average reading volume was mostly distributed in the range of 1 000-3 000 views,and the number of forwards and views maintained a low level of 4-15 views.In terms of the form of science popularization,the average reading vol-ume of video content was about 3 600 views,and the average reading volume of comic content was about 8 800 views,both lower than the average reading volume of traditional graphic content.Conclusion Based on the problems of low accuracy of children's health science content and insufficient formal innovation,an optimization path centered on the audience to optimize content and expand forms is proposed.This provides a reference for medical institutions to further leverage the role of WeChat public accounts and improve the level of children's health science popularization.

Multi-conjugate vaccine and polyvalent vaccine can reduce the number of vaccinations, improve vaccination efficiency, and provide wider protection against diseases, and can not only brings convenience to recipients but also reduce healthcare costs, making it a key focus in modern vaccine development. However, even if the components of the vaccine are derived from already approved monovalent vaccines, it must still be considered as a new vaccine and undergo randomized controlled clinical trials to evaluate their safety and efficacy in humans. Due to the inclusion of multiple antigens, clinical evaluation must consider the potential interactions between or among the components, as well as the impacts of adjuvants, preservatives, and other ingredients on the vaccines' safety and efficacy. These factors introduce certain specific challenges in the clinical evaluation of multi-conjugate vaccine and polyvalent vaccine. This article summarizes the key elements and methods of clinical study design for multi-conjugate vaccine and polyvalent vaccine in terms of safety, immunogenicity, and protective efficacy, and discuss the problems and challenges exisitng in vaccine clinical evaluation to provide reference for the standardization of clinical study design of multi-conjugate vaccine and polyvalent vaccine.

The impact of vaccines on public health and their effectiveness in controlling infectious diseases partly depends on their coverage rate, which refers to the proportion of individuals vaccinated within a specific population. Vaccination coverage is foundational data for vaccine immunization programs, a key parameter for evaluating and monitoring the implementation of vaccination plans, and an important data point in real-world post-market studies of vaccines. Additionally, research on vaccination coverage is becoming increasingly prevalent in vaccine evaluation, primarily used to establish the risk of disease incidence in populations with different vaccination coverage rates in order to assess the protective effectiveness of vaccines. This paper reviews the research methods used to assess vaccine coverage both domestically and internationally, as well as their applications in evaluating vaccine effectiveness. It also analyzes and compares the advantages and disadvantages of different research methods for measuring vaccination coverage and discusses the significance of monitoring and improving vaccine coverage rates. The goal is to promote research and application of vaccination coverage rates in China, providing a scientific basis for post-market vaccine studies and for local administrative departments to formulate immunization policies.

Quality control of pediatric musculoskeletal ultrasound(MSKUS)must be integrated throughout the entire diagnostic process.Its core lies in a thorough understanding of the growth,development,and pathophysiological characteristics of the pediatric musculoskeletal system,mastery of MSKUS examination techniques,and the establishment of a systematic and comprehensive diagnostic framework.This review focuses on the core aspects of pre-examination,during examination,and post-examination to describe the quality control points and strategies for pediatric MSKUS.

Objective Utilizing patient journey mapping to decipher disease management behaviors,barriers,and needs in young and middle-aged liver transplant recipients,providing implications for self-management optimization and quality of life improvement.Methods Using purposive sampling,12 young and middle-aged liver transplant patients who attended outpatient clinics or were hospitalized in liver transplant center of a tertiary hospital in Qingdao were selected for semi-structured interviews from September to November 2024.Thematic extraction and analysis were performed using Colaizzi's 7-step analysis,ultimately resulting in the development of a patient journey map.Results The journey stages were divided into transplantation decision-making period,transplantation waiting period,perioperative period,and post-discharge management period,and the journey key elements were designed as behaviors,barriers,and needs.A total of 25 themes were extracted,including behaviors(such as referrals to higher-level hospitals,verification of treatment options),barriers(such as lack of decision-making autonomy,health information-seeking barriers),and needs(such as shared decision-making,financial assistance).Ultimately,resulting in a map of the disease management journey for young and middle-aged liver transplant recipients.Conclusion The behaviors,barriers,and needs in disease management among young and middle-aged liver transplant recipients demonstrate distinct phase-specific patterns.Healthcare providers should deliver precise and dynamic interventions tailored to each clinical phase,aiming to foster optimal self-management behaviors,address phase-specific banriers,and meet evolving patient needs throughout the transplant continuum.