Microbial infections are a prevalent challenge in the prevention and treatment of oral diseases. Antibiotic therapy faces clinical limitations due to its single-target mechanism and tendency to induce resistance with repeated use, necessitating novel antibacterial strategies. Stimuli-responsive antibacterial materials, whose antimicrobial activity can be modulated by external stimuli, offer advantages such as remote controllability, potential for localized precision treatment, and a reduced risk of inducing resistance. Among these materials, mechanical force-triggered piezoelectric materials exhibit significant antibacterial activity in the biomedical field owing to their unique piezoelectric effect, excellent stability, and good biocompatibility. Research has shown that piezoelectric materials can convert mechanical energy into electrical energy in response to external forces, which enables antibacterial effects without requiring an external power source. The underlying mechanisms primarily include direct electric field effects, generation of reactive oxygen species, and immune modulation. Preliminary applications in treating oral infections (e.g., dental caries, periodontitis, and peri-implantitis) have confirmed their stability and biocompatibility, establishing a foundation for clinical translation. However, long-term efficacy and biosafety in the complex oral microenvironment require further validation. Future research should focus on optimizing material preparation protocols to enhance antibacterial efficacy and stability, further investigating the underlying antimicrobial mechanisms, and systematically evaluating their therapeutic outcomes and safety profiles across various types of oral infections. This review summarizes the antibacterial effects, mechanisms, stability, safety, and research progress of piezoelectric materials in the stomatologic field, aiming to provide new insights for further research and application in this area.

Objective: To improve the efficiency of patient treatment in routine, emergency, and mass casualty scenarios (both peacetime and wartime), eliminate reliance on blood type compatibility, and promote the productization of platelet-rich plasma (PRP), this study investigated the optimal mixing ratio for developing a universal PRP formulation. Methods: PRP was prepared from donors with blood types O, A, B, and AB. Samples were mixed in varying proportions, and the optimal ratio was determined based on the trend of anti-A and anti-B antibody titers in the mixed PRP. Concentrations of the growth factors PDGF-AA, PDGF-BB, EGF, TGF-β1, and VEGF were measured by enzyme-linked immunosorbent assay (ELISA) before and after mixing. Results: A mixing ratio of A∶B∶AB=6∶2.5∶24 resulted in no detectable agglutination with either A or B cells in the microcolumn gel system, indicating the absence of immunological reactivity and confirming universal compatibility. Importantly, the levels of all measured growth factors remained unchanged following mixing, suggesting preservation of biological activity. Conclusion: These findings suggest that universal PRP can be prepared by neutralizing blood type antibodies through antigen-antibody reactions.

Objective To investigate the effects of combined exposure to benzene series, dust and noise on occupational high-frequency hearing loss (HFHL) in the electronics manufacturing industry. Methods A total of 740 employees from an electronic manufacturing enterprise were selected as the study subjects. According to the detection of occupational hazard factors, they were divided into noise group, noise benzene group, and noise dust group, with 325, 167, and 248 people, respectively. Occupational health examinations were conducted on the study participants to analyze their HFHL detection status and influencing factors. Results Among all participants (n=740), 456 (61.62%) were male, 284 (38.38%) were female, and 123 (15.62%) were detected with HFHL. The detection rate of HFHL increased with age and length of service (P<0.01). According to the exposure factor grouping, the detection rates of HFHL in the noise group, noise benzene group, and noise dust group were 12.00%, 19.16%, and 20.97%, respectively (P<0.05). Multivariate logistic regression analysis showed that workers aged ≥ 40 years, with 10-20 years of work experience, ≥ 20 years of work experience, exposure to noise and benzene series, and exposure to noise and dust had an increased risk of developing HFHL to 1.734, 1.923, 3.071, 1.706, and 1.527, respectively (P<0.05). Conclusion Combined exposure to noise and benzene series, combined exposure to noise and dust, as well as age and extended length of service may increase the risk of HFHL among workers.

Objective : To generate heterozygous TRAF2 knockout mice, the CRISPR/Cas9 technology was successfully employed. These mice were served as a valuable model to explore the pathological mechanisms underlying inflammatory and immune disorders mediated by abnormal TNF-α-TRAF2 signaling and to develop new therapeutic targets. Methods : A vector targeting the knockout of the TRAF2 gene was constructed. Lead RNA and Cas9 Mrna were introduced into the fertilized eggs of C57BL/6JGpt mice through microinjection to mediate the TRAF2 gene mutation in mice. The mouse tail protein was extracted and the genotype of the F0 generation was determined by PCR and Western blot. TRAF2+/- mice were successfully obtained. F0 generation mice were backcrossed with C57BL/6JGpt wild-type mice to obtain stable TRAF2+/- mice for propagation and subsequent experiments. The body weight of TRAF2+/- mice was detected; Western blot was used to detect the expression of TRAF2 in the spleen, liver and kidney tissues of TRAF2+/- mice. The development of spleen, liver and kidney tissues in TRAF2+/- mice was detected by HE staining. Results : PCR identification using specific primers demonstrated that TRAF2+/- mice exhibited a target band at 679 bp. Western blot analysis results indicated that, compared with the WT group, the expression of TRAF2 in the tail protein of TRAF2+/- mice was significantly reduced(P+/- mice had a lower body weight compared to their littermate WT mice(P+/- mice was decreased(P+/- mice and WT mice. Conclusion The successful construction of TRAF2+/- mice has provided an important animal model for exploring the role of TRAF2 in developmental regulation, revealing the mechanism of inflammatory immune diseases mediated by abnormal TNF-α-TRAF2 signaling, and screening related drug targets.

Objective: To compare the changes in the concentration of relevant growth factors released from platelet-rich plasma (PRP) stored at -80℃ by cryopreservation and at 4℃ by refrigerated lyophilization over 2 years, aiming to provide a theoretical basis for prolonging PRP storage duration. Methods: PRP (n=15) was separated using a blood cell separator and stored under -80℃ cryopreservation (F-PRP group) and 4℃ refrigerated freeze-drying conditions (FD-PRP group). The contents of growth factors (PDGF-AA, PDGF-BB, EGF, TGF-β1, and VEGF) in both groups were measured by ELISA at 1, 3, 6, 9, 12 and 24 months. Results: PDGF-AA and VEGF maintained good stability in both groups for up to 24 months. PDGF-BB and TGF-β1 showed high stability in the first 12 months but their stability decreased gradually from 12th to 24th months. EGF demonstrated good stability in the first 6 months, and its stability gradually decreased from the 9th to 24th months. Comparing the F-PRP and FD-PRP groups, the concentrations of the five growth factors in the FD-PRP group were either not statistically different or higher than those in the F-PRP group at all time points. Specifically, the concentrations of EGF were significantly higher in the FD-PRP group at all time points. Conclusion: Both -80℃ freezing and 4℃ freeze-drying enable long-term preservation of PRP. Freeze-drying imposes less stringent storage requirements and facilitates growth factor compared to frozen storage.

Objective To investigate the correlation between different forms of serum vitamin D levels and liver fibrosis in patients with metabolic dysfunction-associated fatty liver disease (MAFLD). Methods Data from the National Health and Nutrition Examination Survey in 2021–2023 were analyzed. Logistic regression models were used to evaluate the relationship between serum total vitamin D, 25(OH)D₃ levels, and liver fibrosis in the MAFLD patients. Results A total of 2 628 patients were included. There were significant differences between MAFLD patients with liver fibrosis and those without fibrosis in age, smoking history, waist circumference, body mass index, high-density lipoprotein cholesterol, total cholesterol, fasting plasma glucose, hypertension history, vitamin D, and 25(OH)D₃ levels (P＜0.05). Logistic regression analysis revealed that compared to the low total serum vitamin D group (11.2-61.8 nmol/L), MAFLD patients with high total vitamin D levels (89.1 nmol/L＜vitamin D≤290 nmol/L) exhibited a 22% reduced risk of liver fibrosis (OR＝0.78, 95%CI 0.64-0.94, P＝0.015). Similarly, compared to the low 25(OH)D₃ group (4.1-57.0 nmol/L), those with high 25(OH)D₃ level [84.7 nmol/L＜25(OH)D₃≤288 nmol/L] showed a 23% lower risk of liver fibrosis (OR＝0.77, 95%CI 0.62-0.95, P＝0.021). After adjusting for covariates, high total vitamin D levels remained significantly associated with reduced liver fibrosis risk (OR＝0.63, 95%CI 0.42-0.94, P＝0.036). Conclusions Elevated serum total vitamin D and 25(OH)D₃ levels are protective factors against early liver fibrosis in MAFLD patients.

Objective To investigate the current status of quality of life and its influencing factors in elderly patients with minor amputations of the diabetic foot,providing a basis for medical staff to formulate intervention strategies.Methods A convergent mixed study design was used.A single-centre cross-sectional survey research method was used to select 168 elderly patients with minor amputation of the diabetic foot admitted to the Department of Wound Repair of a tertiary-level hospital in Beijing from May 2022 to May 2024 for questionnaire surveys and multivariate linear regression analyses of factors affecting the quality of life.During the same period,15 patients were selected for semi-structured interviews using purposive sampling based on ternary interaction determinism.Results Quantitative findings:A total of 167 valid questionnaires were retrieved,and the recovery rate of valid questionnaires was 99.4％.the total quality of life score of 167 respondents was(84.22±12.49)scores;the results of multivariate linear regression analyses showed that age and self-care ability were the independent risk factors affecting the quality of life of patients with minor amputation of the diabetic foot(P＜0.05).Qualitative findings:a total of 3 themes were extracted based on the triadic interactive determinism,including subject level,environmental level and behavioural level.Mixed findings:age and amputation affect the physical and mental state of patients and hinders quality of life improvement;limited work and life,and scarce external resources;the level of self-care ability restricts self-management behaviours and makes it difficult to improve quality of life.Conclusion Elderly patients with minor amputations of the diabetic foot have impaired physiological and psychological health to some degree,and healthcare professionals should be concerned about the negative impact of minor amputations on elderly diabetic foot patients,while also focusing on their individual needs and providing support.

Objective To explore the preferences and needs of colorectal cancer patients for"Internet+TCM nursing services",aiming to provide a basis for the improvement of service quality and the formulation of relevant policies,so as to better meet the needs of patients.Methods A total of 189 patients with colorectal cancer who were admitted to a tertiary A Chinese Medicine hospital in Qingdao from September 2023 to July 2024 were selected as the research subjects.A general data questionnaire and Questionnaire on"Internet+Traditional Chinese Medicine Nursing Service"Preference of Colorectal Cancer Patients were used with 6 attributes,including average out-of-pocket cost,nurse qualification,service waiting time,service mode,comprehensiveness of service content,and platform service evaluation,each attribute with 2 to 3 levels.The preference,payment intention of"Internet+TCM nursing services"were analyzed by constructing a mixed Logit model,and the influencing factors of choice preference of different colorectal cancer patients was explored through subgroup analysis.Results Totally 189 questionnaires were sent out,and 156 valid questionnaires were collected,with an effective recovery rate of 82.54％.Among the respondents,112 patients(71.79％)actively accepted"Internet+TCM nursing services",and the attributes of"Internet+TCM nursing services"such as payment fee,service evaluation,service content and nurse qualification had an impact on nursing service preference of colorectal cancer patients(P＜0.05).Based on willingness to pay,the ranking of attributes was service evaluation,service content and nurse qualification.Factors such as education level and the presence of ostomy also affected the preference of"Internet+TCM nursing services"in patients with colorectal cancer(P＜0.05).Conclusion Patients with colorectal cancer prefer"Internet+TCM nursing services",which has an average service cost of 50 yuan per time,excellent platform service evaluation,comprehensive service content,specialized TCM nurses.The preferences and specific characteristics of patients with colorectal cancer can be considered to optimize the allocation of nursing resources and provide services in line with their preferences.

Objective To investigate the factors influencing the natural outcome of low-grade squamous intraepithelial lesions(LSIL)of the cervix.Methods A total of 154 patients who underwent colposcopic cervical biopsy in the Third Affiliated Hospital of Zhengzhou University from January 2022 to January 2023 were selected and divided into negative conversion group(55 cases),continuous group(70 cases)and upgraded group(29 cases)according to the follow-up results.Logistic regression was used to analyze the influence of related factors on the outcome of LSIL.Results There were statistically significant differences in the number of vaginal births,the results of thin-prep cytology test,human papilloma virus(HPV)typing,whether vaginal LSIL was combined,whether there were symptoms,and vaginal microecology among three groups(P＜0.05).Multivariate Logistic analysis showed that combined vaginal LSIL,vaginal microecological abnormalities,atypical squamous cell-cannot exclude high-grade squamous intraepithelial lesion(ASC-H)/high-grade squamous intraepithelial lesion(HSIL),HPV 16/18 positive or mixed positive were independent risk factors for persistent infection(P＜0.05),combined vaginal LSIL,symptomatic,vaginal microecological abnormalities,ASC-H/HSIL,HPV 16/18 positive or mixed positive were all independent risk factors for escalation of lesions(P＜0.05).Conclusion Patients with vaginal LSIL,vaginal microecological abnormalities,ASC-H/HSIL,HPV 16/18 positive or mixed positive should be followed up and early intervention to reduce the risk of disease escalation.

Chronic obstructive pulmonary disease (COPD) is the fourth leading cause of death worldwide, causing a significant socioeconomic burden. This article reviews the effects of influenza vaccination on COPD and finds that influenza vaccine can significantly reduce the risk of influenza infection, reduce the number of acute exacerbations, and reduce the hospitalization rate in patients with COPD. The vaccine has a favorable safety profile and significant economic benefits, which can reduce medical costs. Currently, influenza vaccination mainly faces challenges such as insufficient patient awareness, insufficient support from the medical system, and socio-cultural and economic factors. Efforts should be focused on reducing the acute exacerbation of COPD patients and providing a scientific basis for the prevention and management of COPD patients.