OBJECTIVE: In order to enhance the efficacy of anti-breast cancer, paclitaxel nanoparticles (PTX NPs) and polypyrrole nanoparticles (PPy NPs) were combined with photothermal therapy and chemotherapy. At the same time, the two dosage forms of PTX NPs and PTX NPs gel were compared. METHODS: PTX NPs were prepared by self-assembly method, and then the cytotoxicity in vitro was investigated by Methyl thiazolyl tetrazolium (MTT) and other methods, and the efficacy and side effects in vivo were further investigated. RESULTS: The average hydrated diameter, PDI and electric potential of PTX NPs were (210.20 ± 1.57) nm, (0.081 ± 0.003) mV and (15.80 ± 0.35) mV, respectively. MTT results showed that the IC₅₀ value of PTX NPs on 4 T1 cells was 0.490 μg/mL, while that of PTX injection was 1.737 μg/mL. The cell inhibitory effect of PTX NPs was about 3.5 times higher than that of PTX injection. The tumor inhibition rates of PTX NPs and gel were 48.64% and 56.79%, respectively. Together with local photothermal stimulation, the tumor inhibition rate of the PTX NPs reached 91.05%, surpassing that of the gel under the same conditions (48.98%), moreover, the organ index and H&E staining results of PTX NPs showed a decrease in toxicity. CONCLUSION This combination therapy can significantly enhance the effect of anti-breast cancer, and the synergistic effect of chemotherapy and light and heat provides a feasible and effective strategy for the treatment of tumor.

Objective: To investigate the epidemilogical characteristics of pulmonary tuberculosis in Huzhou City, Zhejiang Province from 2014 to 2023, so as to provide the basis for formulating prevention and control measures for the construction of "TB-free city". Methods: The data of pulmonary tuberculosis cases in Huzhou City from 2014 to 2023 was collected through the Infectious Disease Reporting Management System of Chinese Disease Prevention and Control Information System. The onset time, region, and population distribution characteristics of the cases were described. Results: A total of 11 598 cases of pulmonary tuberculosis were reported in Huzhou City from 2014 to 2023, with an average annual incidence of 37.42/105. The reported incidence decreased from 47.50/105 in 2014 to 28.36/105 in 2023 (P<0.05), with an annual decline rate of 5.57%. There were 6 304 etiological positive cases, accounting for 54.35%. The peak season for pulmonary tuberculosis cases was from March to September, with the highest seasonal ratio of 112.48% in May. The average annual reported incidence rates in Anji County and Changxing County were relatively high (46.14/105 and 41.15/105). The reported incidence rate of pulmonary tuberculosis in Huzhou City increased with age (P<0.05), peaking at 97.36/105 in the group aged 75 to <80 years. There were 7 991 male pulmonary tuberculosis cases and 3 607 female cases, with a male-to-female ratio of 2.22∶1. The average annual incidence rates of pulmonary tuberculosis was higher in males than in females (50.39/105 vs. 23.87/105). Farmers were the primary occupation affected, with 6 350 cases accounting for 54.75%. Conclusions The reported incidence rate of pulmonary tuberculosis in Huzhou City decreased from 2014 to 2023, with a high incidence in spring and summer. The incidence rates in Anji County and Changxing County were higher than Huzhou City's average. Male, elderly residents and farmers were the key populations for pulmonary tuberculosis prevention and control.

Objective:To analyze the mutation types and distribution characteristics of thalassemia gene among high-risk populations in Sanya City, and to evaluate the effectiveness of blood routine screening, in order to provide scientific basis for formulating measures for prevention and control of thalassemia in Sanya City.Methods:Retrospective analysis was used to collect detection results and clinical data from high-risk individuals who completed genetic screening for thalassemia at Sanya Materal and Child Health Hospital from January 2019 to August 2021. Mutation types and distribution characteristics of thalassemia gene were analyzed, and the missed detection rate and sensitivity of blood routine indicators [mean corpuscular volume (MCV) and mean corpuscular hemoglobin (MCH)] were evaluated based on the results of genetic screening for thalassemia.Results:A total of 5 760 high-risk individuals were included in the screening results of thalassemia genes, and 3 868 samples of thalassemia gene mutations were detected, with a detection rate of 67.15%. Among them, there were 2 979 samples with α-thalassemia genetic mutations, with a detection rate of 51.72%; including 2 966 common genotype samples (99.56%), the main genotype was αα/-α 3.7 (20.14%, 600/2 979); 13 rare genotype samples (0.44%), 4 cases of αα/-- THAI, 3 cases of α CD40(AAG>AA-)α/αα, 2 cases of α PPα/αα, and 1 case of Fusion gene/αα, Fusion gene/α WSα, α WSα/α PPα, and α CD40(AAG>AA-)α/α WSα each. There were 340 samples with β-thalassemia gene mutations, with a detection rate of 5.90%; including 336 common genotype samples (98.82%). The β CD41/42/β N genotype was dominant (57.65%, 196/340); 4 rare genotype samples (1.18%), β CD5(-CT)/β N, β IVS-Ⅱ-2(-T)/β N, β IVS-Ⅱ-761(-T)/β N and β Initiation(ATG>AGG)/β N 1 case each. There were 549 samples of αβ-compound type thalassemia, with a detection rate of 9.53%. The α missing recombination β CD41/42 genotype was dominant (61.02%, 335/549). There were a total of 4 226 samples that could be traced back to MCV and MCH. Among them, 3 007 samples were found to have mutations in thalassemia genes through screening, 2 584 cases were found to have abnormalities in the combination of MCV and MCH indicators, and 423 samples were missed in blood routine screening, with a missed detection rate of 14.07% (423/3 007). The missed samples were mainly α static type, accounting for 89.13% (377/423) of the total missed samples. The screening sensitivity of MCV combined with MCH for α-, β- and αβ-compound type thalassemia was 82.65%, 98.07% and 98.15%, respectively. Conclusion:The types of genetic mutations in thalassemia in Sanya City are complex and diverse, and there are certain omissions in the blood routine screening of MCV combined with MCH.

Purpose: To analyze the gene mutation, immune infiltration and tumor growth of primary tumor and distant tumor under different treatment modes. Materials and Methods: Twenty B16 murine melanoma cells were injected subcutaneously into the of both sides of the thigh, simulating a primary tumor and a secondary tumor impacted by the abscopal effect, respectively. They were divided into blank control group, immunotherapy group, radiotherapy group, and radiotherapy combined immunotherapy group. During this period, tumor volume was measured, and RNA sequencing was performed on tumor samples after the test. R software was used to analyze differentially expressed genes, functional enrichment, and immune infiltration. Results: We found that any treatment mode could cause changes in differentially expressed genes, especially the combination treatment. The different therapeutic effects might be caused by gene expression. In addition, the proportions of infiltrating immune cells in the irradiated and abscopal tumors were different. In the combination treatment group, T-cell infiltration in the irradiated site was the most obvious. In the immunotherapy group, CD8+ T-cell infiltration in the abscopal tumor site was obvious, but immunotherapy alone might have a poor prognosis. Whether the irradiated or abscopal tumor was evaluated, radiotherapy combined with anti-programmed cell death protein 1 (anti-PD-1) therapy produced the most obvious tumor control and might have a positive impact on prognosis. Conclusion Combination therapy not only improves the immune microenvironment but may also have a positive impact on prognosis.

Brain-computer interfaces (BCIs) have become one of the cutting-edge technologies in the world, and have been mainly applicated in medicine. In this article, we sorted out the development history and important scenarios of BCIs in medical application, analyzed the research progress, technology development, clinical transformation and product market through qualitative and quantitative analysis, and looked forward to the future trends. The results showed that the research hotspots included the processing and interpretation of electroencephalogram (EEG) signals, the development and application of machine learning algorithms, and the detection and treatment of neurological diseases. The technological key points included hardware development such as new electrodes, software development such as algorithms for EEG signal processing, and various medical applications such as rehabilitation and training in stroke patients. Currently, several invasive and non-invasive BCIs are in research. The R&D level of BCIs in China and the United State is leading the world, and have approved a number of non-invasive BCIs. In the future, BCIs will be applied to a wider range of medical fields. Related products will develop shift from a single mode to a combined mode. EEG signal acquisition devices will be miniaturized and wireless. The information flow and interaction between brain and machine will give birth to brain-machine fusion intelligence. Last but not least, the safety and ethical issues of BCIs will be taken seriously, and the relevant regulations and standards will be further improved.
Humans ; Brain-Computer Interfaces ; Medicine ; Algorithms ; Artificial Intelligence ; Brain

Background::Given that seizures may be triggered by vaccination, this study aimed to evaluate the risk and correlative factors of seizures in patients with epilepsy (PWE) after being vaccinated against coronavirus disease 2019 (COVID-19).Methods::This study retrospectively enrolled PWE who were vaccinated against COVID-19 in the epilepsy centers of 11 hospitals in China. We divided the PWE into two groups as follows: (1) patients who developed seizures within 14 days of vaccination were assigned to the SAV (with seizures after vaccination) group; (2) patients who were seizure-free within 14 days of vaccination were assigned to the SFAV (seizure-free after vaccination) group. To identify potential risk factors for seizure reccurence, the binary logistic regression analysis was performed. Besides, 67 PWE who had not been vaccinated were also included for elucidating the effects of vaccination on seizures recurrence, and binary logistic regression analysis was performed to determine whether vaccination would affect the recurrence rate of PWE who had drug reduction or withdrawal.Results::The study included a total of 407 patients; of which, 48 (11.8%) developed seizures within 14 days after vaccination (SAV group), whereas 359 (88.2%) remained seizure-free (SFAV group). The binary logistic regression analysis revealed that duration of seizure freedom ( P < 0.001) and withdrawal from anti-seizure medications (ASMs) or reduction in their dosage during the peri-vaccination period were significantly associated with the recurrence of seizures (odds ratio= 7.384, 95% confidence interval = 1.732–31.488, P = 0.007). In addition, 32 of 33 patients (97.0%) who were seizure-free for more than three months before vaccination and had a normal electroencephalogram before vaccination did not have any seizures within 14 days of vaccination. A total of 92 (22.6%) patients experienced non-epileptic adverse reactions after vaccination. Binary logistic regression analysis results showed that vaccine did not significantly affect the recurrence rate of PWE who had the behavior of ASMs dose reduction or withdrawal ( P = 0.143). Conclusions::PWE need protection from the COVID-19 vaccine. PWE who are seizure-free for >3 months before vaccination should be vaccinated. Whether the remaining PWE should be vaccinated depends on the local prevalence of COVID-19. Finally, PWE should avoid discontinuing ASMs or reducing their dosage during the peri-vaccination period.

Objective:To understand the employment psychology of college students in traditional Chinese medicine universities through analyzing relevant influencing factors, and to provide solutions to improve employment quality of the medical students.Methods:An online questionnaire survey on employment psychology and employment situation was conducted from August to September in 2017 among 384 students who had graduated from Longhua Hospital of Shanghai University of Traditional Chinese Medicine from 2013 to 2017. SPSS 19.0 was used for chi-square test and linear trend test on the survey results.Results:A total of 374 valid questionnaires were recovered, with the effective recovery rate of 97.4%. The results showed that the most important factors to be considered were professional counterparts (77.01%, 288 students), salary (75.67%, 283 students) and development prospect (69.52%, 260 students) and the most important psychological characteristics were hesitation and contradiction (50.8%, 190 students) and anxiety (25.13%, 94 students). The study found that employment psychology was related to students' family situation, category, temperament and performance during their education period.Conclusion:Students have different employment psychology, which can be improved by consummating career planning, broadening employment channels, combing employment policies, supplementing professional shortcomings, and improving comprehensive skills. Meanwhile, colleges and universities can expand their practice bases, provide employment counseling, and improve education resources, speed up the construction of the second classroom, pay attention to special groups to conduct employment guidance and improve the quality of employment.

Objective: To investigate the effect of denture stomatitis of selective laser melting (SLM) titanium alloy for removable partial denture frameworks. Methods : Twenty patients with dentition defects in our hospital were divided into two groups according to the different methods of creating a removable partial denture framework: the SLM group and casting group. The success rate, placement rate, masticatory efficiency and incidence of denture stomatitis were compared. Experimental data were analyzed with SPSS20.0. Results : The success rate of the SLM framework group was 100.00%, which was higher than that of the casting group (90.00%) (P ＜ 0.01). The rate of framework placement in the SLM group was slightly lower than that in the casting group (P ＜ 0.05). The masticatory efficiency of the SLM group was higher than that of the casting group (0.783 ± 0.030 vs. 0.699 ± 0.037, P ＜ 0.001). The incidence of denture stomatitis (10.00%) in the SLM group was significantly lower than that in the casting group (30.00%) (P ＜ 0.001). Conclusion SLM is superior to the traditional casting method in mastication efficiency and reducing the incidence of denture stomatitis. This method can meet the clinical requirements, but the accuracy of the long-term stent needs to be improved.

Objective: To investigate the physical properties of Ti-6Al-4V clasps generated by selective laser melting (SLM) with different construction directions and to compare these clasps with cast clasps, which could provide a basis for fabricating SLM clasps with high precision and excellent mechanical properties. Methods: Ti-6Al-4V clasps were fabricated by SLM at 0 degrees (SLM0 group), 45 degrees (SLM45 group) and 90 degrees (SLM90 group) (n = 12). Twelve clasps were cast by the casting method as the control group. Meanwhile, four metal abutments were cast randomly as the abutments of the four groups. X-ray was used to detect cracks in the clasps of each group. The roughness of the clasps was measured by confocal microscopy, the fitness tests between clasps and abutment were processed by stereomicroscopy, and the microstructure of clasps in each group was observed under a metallographic microscope to evaluate the physical properties. Results : There were 0-8 visible cracks in the casting group but no obvious defects in the SLM groups. The maximum surface roughness was observed in the cast group (18.102 ± 3.762) μm, while the minimum roughness was observed in the SLM90 group (5.942 ± 1.486) μm (P < 0.05). There was no statistically significant difference in surface roughness between the SLM0 group [(8.711 ± 2.378) μm] and the SLM45 group [(8.513 ± 1.161) μm]. Fitness was worst in the casting group [(68.445 ± 14.876) μm] and best in the SLM90 group [(33.417 ± 5.880) μm] (P < 0.05). There was no statistically significant difference in fitness between the SLM0 group [(52.917 ± 12.102) μm] and the SLM45 group [(50.889 ± 7.011) μm]. In addition, the growth direction of the β grains was roughly parallel to the build direction, and acicular α grains were present between β grains. SLM was composed of fine grains, while the cast group had large grains. Conclusions Specimens generated by SLM had finer grains than cast specimens. In addition, SLM90 clasps had the highest fitness and the lowest surface roughness.

Objective: To investigate the radiographic manifestations and clinical relevance to central nervous system complications of leukemia (CNSCL)in children. Methods: The CT and magnetic resonance imaging(MRI) fin-dings and clinical features of 49 pediatric patients with CNCSL in Shanghai Children′s Medical Center Affiliated to Shanghai Jiaotong University School of Medicine from May 2010 to June 2018 were retrospectively analyzed. Results: (1) Cerebrovascular abnormalities in 23 cases included hemorrhage(20 cases), infarction(2 cases) and sinus thrombosis(1 case). One case of epidural hematoma and 19 cases of intracerebral multiple bleeding were seen in the hemorrhage group, which demonstrated high-density on CT and different signal on MRI as time went by.Microhe-morrhage displayed as low signal on susceptibility weighted imaging.(2) Among 23 cases of leukemic infiltration, the dura and/or skull were involved in 18 cases, which presented as fusiform or mass, with high density on CT, low signal on T1WI, intermediate signal on T2WI and strong enhancement; 6 leptomeningeal infiltration demonstrated as meningeal thickening and enhancement; 2 parenchymal involvement manifested with high-density mass; 2 oculomotor nerve and 1 optic nerve infiltration demonstrated thickening and enhancement.(3)White matter disease was seen in 2 cases, with hyper-intensity on T2WI.(4) One case of secondary tumor was glial tumor in the brainstem. Conclusions The radiographic manifestations of CNCSL in children are various.CT and MRI are of important diagnostic values.Choosing the best imaging examination method and sequence according to clinical symptoms and test results can provide more valuable information for clinical diagnosis and treatment.