Objective·To investigate the regulatory effects and underlying mechanisms of mouse mandibular osteoblasts on B cell differentiation and development.Methods·Single-cell suspensions from mouse mandibular bone were prepared using an optimized enzymatic digestion method and induced to differentiate into osteoblasts in vitro.Osteogenic potential was validated by real-time quantitative PCR(RT-qPCR),alkaline phosphatase(ALP)staining,and alizarin red S(ARS)staining.The spatial localization relationship between osteoblasts and B cells in mandibular tissues was examined via immunofluorescence staining.High-purity hematopoietic progenitor cells were isolated using fluorescence-activated cell sorting.A Transwell co-culture system was established to assess the regulatory effects of different osteoblast concentrations(5×104,2.5×105,and 5×105 cells/well)on B cell differentiation(5×104 cells/well).Flow cytometry and RT-qPCR were employed to evaluate B cell viability and differentiation.Additionally,RT-qPCR was used to analyze the expression of osteoblast-secreted factors associated with B cell development during osteogenic differentiation.Results·Mandibular osteoblasts exhibited robust osteogenic potential,as confirmed by ALP/ARS staining and high expression of osteogenic markers(Runx2,Osx,Ocn,and Alp)via RT-qPCR.Immunofluorescence revealed close spatial proximity between osteoblasts and B cells in mandibular tissues.In the co-culture system,osteoblasts promoted B cell differentiation in a concentration-dependent manner.RT-qPCR and immunofluorescence demonstrated that osteoblasts significantly upregulated key genes involved in B cell development(Ebf1,Rag1,Il7r,and Pax5;all P<0.001).Furthermore,osteoblast-derived factors(Il7,Baff,and Flt3l)were markedly elevated during osteogenic differentiation(all P<0.05).Conclusion·Mandibular osteoblasts enhance B cell differentiation and development in a concentration-dependent manner,likely through secreting growth factors that upregulate critical B cell differentiation genes.

Objective To explore the bioactive components in Jiawei Xiaoyao Pills(JWXYP)and their mechanisms for alleviating depression-like behaviors.Methods The active compounds,key targets,and pathways of JWXYP were identified using TCMSP and TCMIP databases.Thirty-six SD rats were randomized equally into 6 groups including a control group and 5 chronic unpredictable mild stress(CUMS)-induced depression groups.After modeling,the 5 model groups were treated with daily gavage of normal saline,1.8 mg/kg fluoxetine hydrochloride(positive control drug),or JWXYP at 1.44,2.88,and 4.32 g/kg.The depression-like behaviors of the rats were evaluated using behavioral tests,and pathological changes in the liver and hippocampus were examined with HE staining.The biochemical indicators in the serum and brain tissues were detected using ELISA.Serum metabolomics analysis was performed to identify the differential metabolites using OPLS-DA,and gut microbiota changes were analyzed using 16S rDNA sequencing.Results Network pharmacology revealed that menthone and paeonol in JWXYP were capable of penetrating the blood-brain barrier to regulate inflammatory pathways and protect the nervous system.In the rat models subjected to CUMS,treatment with JWXYP significantly improved body weight loss,sucrose preference and open field activities,reduced liver inflammation,alleviated structural changes in the hippocampal neurons,decreased serum levels of TNF-α,IL-1β,IL-6 and LBP,and increased 5-HT and VIP concentrations in the serum and brain tissue,and these effects were the most pronounced in the high-dose group.Metabolomics analysis showed changes in such metabolites as indole-3-acetamide and acetyl-L-carnitine in JWXYP-treated rats,involving the pathways for bile acid biosynthesis and amino acid metabolism.16S rDNA analysis demonstrated increased gut microbiota diversity and increased abundance of Lactobacillus species in JWXYP-treated rats.Conclusion JWXYP alleviates depression-like symptoms in rats by regulating the neurotransmitters,inhibiting inflammation and oxidation,and modulating gut microbiota.

Objective To investigate the CT and MRI features of giant cell reparative granuloma(GCRG)in lateral skull base.Methods The CT,MRI and clinicopathological data of 8 patients with GCRG in lateral skull base were collected and analyzed.Results All of the eight lesions were unilateral and solitary(three on the left side and five on the right side),with widespread involvement affecting two or more bony structures of the lateral skull base.All lesions showed expansile and lytic bone destruction on CT scans,the margins were clear(7/8),and the sclerotic changes could be seen at the margin of all eight lesions.On MRI,the lesions revealed heterogeneous isointense and hypointense on T1WI,and heterogeneous hypointense with focal cystic changes on T2WI,without fluid-fluid levels.The enhanced scan showed heterogeneous enhancement.Seven cases extended to the middle cranial fossa,caused com-pression of the temporal lobe brain tissue,with thickened and strengthened adjacent meninges.Conclusion The GCRG in lateral skull base has certain characteristic appearances on CT and MRI;understanding these characteristic manifestations can provide a basis for accurate diagnosis.

Objective·To investigate the regulatory effects and underlying mechanisms of mouse mandibular osteoblasts on B cell differentiation and development.Methods·Single-cell suspensions from mouse mandibular bone were prepared using an optimized enzymatic digestion method and induced to differentiate into osteoblasts in vitro.Osteogenic potential was validated by real-time quantitative PCR(RT-qPCR),alkaline phosphatase(ALP)staining,and alizarin red S(ARS)staining.The spatial localization relationship between osteoblasts and B cells in mandibular tissues was examined via immunofluorescence staining.High-purity hematopoietic progenitor cells were isolated using fluorescence-activated cell sorting.A Transwell co-culture system was established to assess the regulatory effects of different osteoblast concentrations(5×104,2.5×105,and 5×105 cells/well)on B cell differentiation(5×104 cells/well).Flow cytometry and RT-qPCR were employed to evaluate B cell viability and differentiation.Additionally,RT-qPCR was used to analyze the expression of osteoblast-secreted factors associated with B cell development during osteogenic differentiation.Results·Mandibular osteoblasts exhibited robust osteogenic potential,as confirmed by ALP/ARS staining and high expression of osteogenic markers(Runx2,Osx,Ocn,and Alp)via RT-qPCR.Immunofluorescence revealed close spatial proximity between osteoblasts and B cells in mandibular tissues.In the co-culture system,osteoblasts promoted B cell differentiation in a concentration-dependent manner.RT-qPCR and immunofluorescence demonstrated that osteoblasts significantly upregulated key genes involved in B cell development(Ebf1,Rag1,Il7r,and Pax5;all P<0.001).Furthermore,osteoblast-derived factors(Il7,Baff,and Flt3l)were markedly elevated during osteogenic differentiation(all P<0.05).Conclusion·Mandibular osteoblasts enhance B cell differentiation and development in a concentration-dependent manner,likely through secreting growth factors that upregulate critical B cell differentiation genes.

Objective To detect the expression of cytochrome c oxidase assembly factor 6(COA6)in breast cancer,study its clinical significance,and analyze the effect of COA6 on immune infiltration in breast cancer.Methods Differential genes were screened by the whole transcriptome sequencing and the expression of COA6 was explored with TCGA(The Cancer Genome Atlas Program)database.The tissues of 125 breast cancer and adjacent tissues were stained by immunohistochemistry to detect COA6 protein expression and analyze the correlation with clinical features.The COA6 mRNA and protein expression in breast cancer cells and tissues were determined by qRT-PCR and Western blot,respectively.The TIMER(Tumor Immune Estimation Resource)database was used to analyze the correlation between high COA6 gene expression and immune cell infiltration.Results The positive expression rate of COA6 in breast cancer tissues was 88％(110/125),which was higher than that of paracarinoma tissues(7.2％,9/125)(P＜0.05)and was positively correlated with tumor size and histological grade.In fresh breast cancer tissues,COA6 protein expression was significantly higher than that in adjacent tissues.Both COA6 mRNA and protein expression were significantly increased in the breast cancer cell lines.COA6 was positively cor-related with the infiltration of helper T cells,NK cells,CD8+T cells,M1 type macrophages,regulatory T cells,dendritic cells,and memory CD4+T cells in the tumor microenvironment.Conclusions The expression level of COA6 is increased in breast cancer and is positively correlated with tumor immune infiltration,which provides a po-tential therapeutic target for breast cancer treatment.

Given the escalating number of cancer patients and the consequent rise in demand for radiation therapy in China, there is an urgent need to establish and improve a talent cultivation system for radiation dosimetrists. The United States, with an early-established cultivation system for radiation dosimetrists, boasts relatively mature and comprehensive systems of academic education and qualification certification. This study summarized and analyzed the educational and certification patterns for radiation dosimetrists in the United States based on public data from relevant institutions, related literature, and interviews with American radiation dosimetrists. Meanwhile, this study delved into and assessed the shortcomings in China′s radiation dosimetry education, examination, certification, and career advancement pathways. Furthermore, this study offered suggestions and recommendations for constructing a novel pattern tailored to the cultivation of radiation dosimetrists in China, in order to facilitate the high-quality development of the medical dosimetry discipline.

Medical physicists play an important role in radiodiagnosis, radiotherapy, and nuclear medicine practices. The International Atomic Energy Agency (IAEA) suggests that medical physicists should be trained and achieve professional certifications. Many developed countries/regions have established comprehensive examination and certification programs for medical physicists. However, these systems are yet to be improved in China. This leads to a lack of control over the professional competence and practice standards in the workforce, posing a negative impact on the quality and safety of China’s clinical services in radiation medicine. The International Medical Physics Certification Board (IMPCB) is aimed at accrediting national/regional medical physics certification programs and providing certification of individual medical physicists in countries/regions lacking such certification programs. This study introduces the procedures and specific method for China’s medical physicists to achieve professional certifications via IMPCB, aiming to help improve their professionalism.

Objective:To construct an early rehabilitation management model for postoperative kinesiophobia patients after total knee arthroplasty (TKA) based on a topic-oriented quality control circle method, aiming to improve the quality of early rehabilitation management.Methods:Using a convenience sampling method, 120 TKA patients with kinesiophobia treated in the Department of Orthopedics at the First Affiliated Hospital of Zhengzhou University from January to April 2022 and September to December 2022 were selected. The patients from January to April 2022 were set as the control group, and those from September to December 2022 were set as the observation group, with 60 patients in each group. The control group received routine rehabilitation management after TKA surgery, while the observation group received the early rehabilitation management model based on the 10 steps of the topic-oriented quality control circle (topic selection, activity planning, clarification of the topic, goal setting, countermeasure formulation, pursuit of optimal strategies, etc.) in addition to the routine management. The differences between the two groups were compared in terms of kinesiophobia score, knee function score, pain score, early rehabilitation assessment rate, effective analgesia rate, and 24-hour ambulation rate.Results:After the intervention, the observation group showed significantly lower knee pain scores (2.89±0.66) and kinesiophobia scores (23.27±4.87) compared to the control group, with a significantly higher knee function score (74.47±7.40), all differences were statistically significant (all P<0.01). Additionally, the observation group had a significantly higher early rehabilitation assessment rate, effective analgesia rate, 24-hour ambulation rate, early rehabilitation compliance rate, earlier time for the first ambulation, shorter hospital stay, and reduced costs compared to the control group, with all differences showing statistical significance (all P<0.01) . Conclusions:The application of the topic-oriented quality control circle to construct and implement an early rehabilitation management model for postoperative kinesiophobia patients after TKA can effectively improve the quality of early rehabilitation management, reduce kinesiophobia levels, enhance knee joint function, and alleviate the economic burden.

By systematically sorting out the theoretical origin， manipulation key points， and clinical applications of sparrow-pecking needling， it is believed that sparrow-pecking needling method involves performing small-amplitude， high-frequency lifting and thrusting of the needle tip in the original position， with heavy thrusting and light lifting， starting slowly and then becoming rapid， thus forming a characteristic needling sensation that spreads to the surroundings in a wavelike manner. The sparrow-pecking needling plays a role in stimulating the conduction of channel qi and regulating the circulation of qi and blood. Additionally， this paper summarized the clinical applications of sparrow-pecking needling in five aspects， regulating mind， regulating channel sinews， regulating zang-fu organs， regulating ying-wei （nutrient and defense qi）， and regulating yang qi， so as to provide references for inheriting and expanding the theory and clinical application of sparrow-pecking needling.

Objective To investigate the expansion margins of the planning target volume (PTV) and the planning organ at risk volume (PRV) in nasopharyngeal carcinoma patients immobilized with Styrofoam and head-neck-shoulder mask. Methods A convenient sample of 33 nasopharyngeal carcinoma patients who received radiotherapy at Huanggang Central Hospital from January to October 2024 were selected as the research subjects. All patients underwent cone beam CT scans during the first three treatments and weekly thereafter. After registration and calibration, the setup errors in the X (LAT), Y (LNG), and Z (VRT) directions were recorded. Statistical analysis was performed on the setup errors in each direction to determine differences, and the expansion margins for PTV and PRV were calculated using empirical formulas. Results A total of 229 cone beam CT images were collected. Statistical analysis found that the setup errors (systematic error ± random error) of the patients in the X, Y, and Z directions were 1.05 ± 0.72, 1.30 ± 0.80, and 1.29 ± 0.82 mm, respectively. The expansion margins for PTV in the left-right, superior-inferior, and anterior-posterior directions were 1.40, 1.76, and 1.8 mm, respectively. The expansion margins for PRV in these directions were 0.83, 1.02, and 1.05 mm, respectively. Conclusion For patients immobilized using Styrofoam and head-neck-shoulder mask, it is recommended that the expansion margins for PTV and PRV be set at 2 mm and 1 mm, respectively, in the left-right, superior-inferior, and anterior-posterior directions, and the PRV margin for the spinal cord be set at 3 mm in all directions.