1.Finite element analysis of stress distribution of anchors at different implantation depths under different bone density conditions in rotator cuff tears
Meng WANG ; Tan LU ; Minjie LI ; Zhicheng LIU ; Xiaoyong GUO
Chinese Journal of Tissue Engineering Research 2026;30(3):561-569
BACKGROUND:Arthroscopic anchor repair has become the main treatment method for rotator cuff tears at present.Among them,the insertion status of the anchor is a key factor in the success or failure of the operation.However,currently,the impact of the insertion depth of the anchor on the stress of the bone tunnel and the anchor under different bone density conditions remains unclear.OBJECTIVE:To explore the stress distribution of the bone tunnel and the anchor when the insertion depth of the anchor varies under different bone density conditions by using three-dimensional finite element analysis technology.METHODS:The CT image data of the humerus of volunteers were collected,and the models of the humerus and the anchor were constructed by using Mimics,3-Matic,and Solidworks software.In 3-Matic,holes with distances of 0,2,4,6,and 8 mm from the surface of the humerus were respectively created at the same position of the humerus and assembled with the anchor.In Mimics,values were assigned based on the CT gray value to obtain a model with normal bone mass(T value ≥-1.0).The parameters were changed to construct models with reduced bone mass(-2.5<T value<-1.0)and osteoporosis(T value<-2.5).In each model,a 70 N pulling force was applied to the anchor along the direction tangent to the inner edge of the bone tunnel.The stress distribution and magnitude of the bone tunnel and the anchor when inserted at different depths under different bone density conditions were observed.RESULTS AND CONCLUSION:(1)When the insertion depth was the same,as the bone density decreased,the maximum equivalent stress of the anchor increased,while the maximum equivalent stress of the bone tunnel decreased.(2)When the bone density was the same,as the insertion depth of the anchor increased,the maximum equivalent stress of the anchor decreased.When the insertion depth was 4 mm,the stress of the bone tunnel was the smallest and the distribution was relatively uniform.The stress of the anchor was mainly distributed around the lower anchor hole and the proximal thread,and the stress of the bone tunnel was mainly at the part in contact with the proximal thread.The increase in the insertion depth would change the uniformity and pattern of the stress distribution,while the bone density had a relatively small impact on the stress distribution pattern.(3)It is concluded that the bone density of the humerus is crucial for the anchor repair of rotator cuff tears.It is recommended that clinicians measure the bone density of the greater tuberosity of the humerus before the operation.Excessive insertion depth of the anchor does not significantly increase its stability.Clinicians can conduct personalized preoperative assessments by using the finite element analysis method in combination with the actual situation of patients to achieve the best surgical results.
2.Targeted Regulation of Oocyte Quality by Traditional Chinese Medicine Compound Formula: A Review
Zhicheng JIA ; Yong LIU ; Guotao HU ; Ruoxi ZHAO ; Weisen FAN ; Ying GUO ; Ruihua ZHAO
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(10):328-336
The oocyte, as the origin of life, provides half the chromosomes to the embryo and supplies the proteins, substrates, energy, and other support necessary for embryonic development. It is the decisive factor determining the embryo's developmental potential. Infertility caused by reproductive endocrine diseases targets the oocyte as the final target cell. Improving oocyte quality represents a key and difficult point in the field of modern reproductive medicine. The decline of oocyte quality is related to meiosis abnormalities, DNA damage, mitochondrial dysfunction, oxidative stress, and other mechanisms. For oocyte quality problems, there is no unified international guideline to recommend drugs. Because the drug intervention research on oocytes involves strict clinical ethical restrictions, the current relevant research only stays in the animal and in vitro experimental stage and has not yet been applied to the clinic. Traditional Chinese medicine compound formula has a multi-target and multi-pathway regulation mechanism and is widely used in clinics. More and more research began to pay attention to the potential mechanism of traditional Chinese medicine compound formulas in improving oocyte quality. Traditional Chinese medicine compound formula has the advantages of multi-target and multi-channel synergy as well as better safety, individualization, and conformity to clinical ethics in improving oocyte quality. This article systematically reviewed the research progress on traditional Chinese medicine compound formula interventions for oocyte quality, aiming to summarize existing findings and provide recommendations to improve oocyte quality and optimize the clinical diagnosis and treatment of female infertility within traditional Chinese medicine.
3.Targeted Regulation of Oocyte Quality by Traditional Chinese Medicine Compound Formula: A Review
Zhicheng JIA ; Yong LIU ; Guotao HU ; Ruoxi ZHAO ; Weisen FAN ; Ying GUO ; Ruihua ZHAO
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(10):328-336
The oocyte, as the origin of life, provides half the chromosomes to the embryo and supplies the proteins, substrates, energy, and other support necessary for embryonic development. It is the decisive factor determining the embryo's developmental potential. Infertility caused by reproductive endocrine diseases targets the oocyte as the final target cell. Improving oocyte quality represents a key and difficult point in the field of modern reproductive medicine. The decline of oocyte quality is related to meiosis abnormalities, DNA damage, mitochondrial dysfunction, oxidative stress, and other mechanisms. For oocyte quality problems, there is no unified international guideline to recommend drugs. Because the drug intervention research on oocytes involves strict clinical ethical restrictions, the current relevant research only stays in the animal and in vitro experimental stage and has not yet been applied to the clinic. Traditional Chinese medicine compound formula has a multi-target and multi-pathway regulation mechanism and is widely used in clinics. More and more research began to pay attention to the potential mechanism of traditional Chinese medicine compound formulas in improving oocyte quality. Traditional Chinese medicine compound formula has the advantages of multi-target and multi-channel synergy as well as better safety, individualization, and conformity to clinical ethics in improving oocyte quality. This article systematically reviewed the research progress on traditional Chinese medicine compound formula interventions for oocyte quality, aiming to summarize existing findings and provide recommendations to improve oocyte quality and optimize the clinical diagnosis and treatment of female infertility within traditional Chinese medicine.
4.Finite element analysis of stress distribution of anchors at different implantation depths under different bone density conditions in rotator cuff tears
Meng WANG ; Tan LU ; Minjie LI ; Zhicheng LIU ; Xiaoyong GUO
Chinese Journal of Tissue Engineering Research 2026;30(3):561-569
BACKGROUND:Arthroscopic anchor repair has become the main treatment method for rotator cuff tears at present.Among them,the insertion status of the anchor is a key factor in the success or failure of the operation.However,currently,the impact of the insertion depth of the anchor on the stress of the bone tunnel and the anchor under different bone density conditions remains unclear.OBJECTIVE:To explore the stress distribution of the bone tunnel and the anchor when the insertion depth of the anchor varies under different bone density conditions by using three-dimensional finite element analysis technology.METHODS:The CT image data of the humerus of volunteers were collected,and the models of the humerus and the anchor were constructed by using Mimics,3-Matic,and Solidworks software.In 3-Matic,holes with distances of 0,2,4,6,and 8 mm from the surface of the humerus were respectively created at the same position of the humerus and assembled with the anchor.In Mimics,values were assigned based on the CT gray value to obtain a model with normal bone mass(T value ≥-1.0).The parameters were changed to construct models with reduced bone mass(-2.5<T value<-1.0)and osteoporosis(T value<-2.5).In each model,a 70 N pulling force was applied to the anchor along the direction tangent to the inner edge of the bone tunnel.The stress distribution and magnitude of the bone tunnel and the anchor when inserted at different depths under different bone density conditions were observed.RESULTS AND CONCLUSION:(1)When the insertion depth was the same,as the bone density decreased,the maximum equivalent stress of the anchor increased,while the maximum equivalent stress of the bone tunnel decreased.(2)When the bone density was the same,as the insertion depth of the anchor increased,the maximum equivalent stress of the anchor decreased.When the insertion depth was 4 mm,the stress of the bone tunnel was the smallest and the distribution was relatively uniform.The stress of the anchor was mainly distributed around the lower anchor hole and the proximal thread,and the stress of the bone tunnel was mainly at the part in contact with the proximal thread.The increase in the insertion depth would change the uniformity and pattern of the stress distribution,while the bone density had a relatively small impact on the stress distribution pattern.(3)It is concluded that the bone density of the humerus is crucial for the anchor repair of rotator cuff tears.It is recommended that clinicians measure the bone density of the greater tuberosity of the humerus before the operation.Excessive insertion depth of the anchor does not significantly increase its stability.Clinicians can conduct personalized preoperative assessments by using the finite element analysis method in combination with the actual situation of patients to achieve the best surgical results.
5.Epidemiological investigation and analysis of a local dengue fever cluster outbreak in Qingpu District of Shanghai
Changpo LIN ; Wei WANG ; Zhangrui XU ; Yadong MA ; Zhicheng ZHANG ; Xueqin YU ; Chengcheng WANG ; Haoxuan WANG ; Yanli DAI ; Huanyu WU
Shanghai Journal of Preventive Medicine 2026;38(3):206-209
ObjectiveTo analyze the epidemiological characteristics of a local dengue fever cluster outbreak in Qingpu District of Shanghai in 2024, and to provide a reference for subsequent dengue fever prevention and control. MethodsSeven confirmed local dengue fever cases reported through the National Notifiable Infectious Diseases Surveillance System in Qingpu District of Shanghai in 2024 were selected as the research subjects. Descriptive epidemiological methods were used to conduct investigation and analysis from the aspects of onset, medical treatment and reporting, clinical symptoms, travel and contact history within 15 days before onset, and activity trajectories. ResultsA total of 7 cases were identified in this outbreak. None of the cases had a travel history to dengue-endemic areas within 15 days prior to onset, while all had shared exposure environments and mosquito bite histories, indicating a local clustered transmission pattern. The main clinical manifestations included fever (100.00%) and myalgia (42.86%). All 7 cases were positive for dengue virus serotype 2 (DENV-2) by nucleic acid testing. Genetic sequencing showed that the virus strains belonged to the Cosmopolitan genotype and were most closely related to the epidemic DENV strains circulating in southern China in recent years. ConclusionThis outbreak might be a local secondary infection caused by the short-term stay of dengue fever-infected individuals, and the possible source of importation was dengue fever endemic areas in southern China.
6.Effect of visuomotor integration training on unilateral spatial neglect after stroke
Jie ZHOU ; Zhicheng HE ; Xiaoyu ZHANG ; Xue WANG ; Damei LIU ; Ning SONG ; Jun WU
Chinese Journal of Rehabilitation Theory and Practice 2026;32(7):745-751
ObjectiveTo investigate the effect of Sanet Vision Integrator (SVI)-based visuomotor integration training on the severity of neglect symptoms, upper limb motor function and activities of daily living (ADL) in patients with post-stroke unilateral spatial neglect (USN). MethodsFrom July, 2023 to September, 2025, 41 patients with post-stroke USN in Beijing Bo'ai Hospital were enrolled and randomly assigned to control group (n = 20) and experimental group (n = 21). Both groups received conventional rehabilitation and visual scanning training, while the experimental group received supplementary SVI-based visuomotor integration training, including saccadic, rotation and hand-eye coordination training, for eight weeks. They were assessed with Chinese Behavioral Inattention Test-Hong Kong version (CBIT-HK), Fugl-Meyer Assessment-Upper Extremities (FMA-UE) and modified Barthel Index (MBI) before and after treatment. ResultsAfter treatment, all the scores significantly improved in both groups (|t| > 4.004, P < 0.001), and the total scores of CBIT-HK and the core visual search sub-items (star cancellation, line crossing and letter cancellation), FMA-UE and MBI were better in the experimental group than in the control group (t > 2.096, P < 0.05). ConclusionSVI-based visuomotor training can effectively alleviate the USN symptoms, broaden the span of visual attention, facilitate the functional recovery of the affected upper extremity, and improve ADL in patients after stroke.
7.Deep learning-based multimodal data fusion: applications and research progress in oral diseases
HE Qinxuan ; CAO Zhicheng ; WANG Wei
Journal of Prevention and Treatment for Stomatological Diseases 2026;34(10):1009-1020
With the rapid advancement of artificial intelligence, deep learning-based multimodal data fusion technology has found increasing applications in the field of dental and stomatological diseases, and it has demonstrated great potential. This technology constructs deep neural networks to automatically extract and fuse features from multimodal data, such as clinical text information, medical imaging, intraoral and extraoral digital scanning records, and histopathological data. By fully leveraging the complementary information among these diverse data sources, it substantially enhances the accuracy of oral disease diagnosis, the rationality of treatment planning, and the reliability of prognosis prediction. This survey systematically explores the core advantages of deep learning in multimodal data fusion; outlines key main strategies, such as early fusion, intermediate fusion, and late fusion along with their applicable scenarios; and summarizes the specific applications and latest research progress of this technology in oral diseases, including oral cancer, periodontitis, dental caries, and temporomandibular disorders. We also highlight critical challenges in its clinical translation, such as complexity in multimodal data alignment, scarcity of high-quality annotated data, insufficient model interpretability, and privacy and security issues. In the future, this technology is expected to develop toward new learning paradigms, intelligentization, and adaptive fusion while integrating explainable artificial intelligence to enhance clinical credibility. Ultimately, large-scale, multicenter clinical validation systems will be required to ensure its safe and effective deployment in clinical practice.
8.Intervention Effect of Suanzaoren Tang on Depression Model Rats Based on JNK/c-Myc/p53 Pathway
Shuailin DU ; Zhicheng HAO ; Ce ZHANG ; Jiyuan GUO ; Xusheng TIAN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(5):12-19
ObjectiveTo investigate the intervention effects of Suanzaoren Tang on depression model rats induced by isolation combined with chronic unpredictable mild stress (CUMS), and to examine its influence on the c-Jun N-terminal kinase (JNK)/proto-oncogene protein (c-Myc)/tumor suppressor protein 53 (p53) signaling pathway, thereby revealing its potential functional mechanism. MethodsA total of 72 male SD rats were randomly divided into six groups using a strict random number table: blank group, model group, fluoxetine group (3.6 mg·kg-1), and high-, medium-, and low-dose Suanzaoren Tang groups (10, 5, 2.5 g·kg-1),with 12 rats in each group. A depression model was established using isolation combined with CUMS. Fluoxetine and different doses of Suanzaoren Tang were administered continuously for 28 days. Behavioral indicators such as sucrose water consumption and open field test scores were recorded. Western blot and immunohistochemistry (IHC) were employed to analyze the expression of key proteins in the JNK/c-Myc/p53 signaling pathway, and the terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay was used to evaluate the number of apoptotic cells in the hippocampus. ResultsCompared with the blank group, the model group exhibited a significantly reduced sucrose preference index (P<0.01), a lower total score of horizontal and vertical movements in the open field test (P<0.01), significantly increased expression of JNK, c-Myc, and p53 proteins in the hippocampus (P<0.01), and a higher number of TUNEL-positive cells in the hippocampus (P<0.01). Compared with the model group, the sucrose preference index and the total score of horizontal and vertical movements in the open field test significantly increased in the high- and medium-dose Suanzaoren Tang groups and the fluoxetine group (P<0.05, P<0.01). The expression of JNK, c-Myc, and p53 proteins significantly decreased in all Suanzaoren Tang groups (high, medium, and low doses) and the fluoxetine group (P<0.05, P<0.01). The number of TUNEL-positive cells in the hippocampus also significantly decreased in these groups (P<0.01). ConclusionSuanzaoren Tang can regulate the expression of JNK/c-Myc/p53 proteins in the hippocampus of depression model rats, and its antidepressant mechanism may be related to its protective effect on hippocampal neurons.
9.Recent advances in the application of three dimensional reconstruction techniques in surgical treatment of early lung cancer
Tao LONG ; Zhengbing REN ; Aizhong SHAO ; Zhicheng HE ; Weibing WU
Chinese Journal of Clinical Thoracic and Cardiovascular Surgery 2025;32(01):121-128
Lung cancer is the leading cause of death worldwide. With the prevalence of CT screening and early diagnosis and treatment of lung cancer in China, more and more patients with early-stage lung cancer characterized with ground-glass opacity are discovered and urgently require treatment, which poses a significant challenge to surgeons. As an emerging technology, three dimensional reconstruction technology plays a crucial auxiliary role in clinical work. This review aims to briefly introduce this technology, focusing on its latest advances in surgical applications in early lung cancer screening, malignant risk assessment, and perioperative period application and medical education.
10.Pathways Related to Osteoporosis Treatment with Active Ingredients of Scutellaria Baicalensis: A Review
Jianqiang DU ; Wenxiu QIN ; Xuesong YIN ; Dan ZHAO ; Zhicheng PAN ; Qi ZHANG ; Enpeng GU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(7):325-330
With the aging of the global population, osteoporosis (OP) is becoming a major public health concern worldwide. Currently, the commonly used anti-osteoporosis drugs in clinical practice have limited application due to many side effects. Therefore, developing more effective and safer strategies for the prevention and treatment of OP has become a research focus in this field. In recent years, the clinical efficacy and advantages of traditional Chinese medicine (TCM) in treating OP have been gradually recognized. With the deepening pharmacological research on TCM for OP prevention and treatment, it is found that the active ingredients of Scutellaria baicalensis can promote bone formation or inhibit bone resorption by regulating signaling pathways, including Wnt/β-catenin, osteoprotegerin (OB)/receptor activator of nuclear factor-κB ligand (RANKL)/RANK (OPG/RANKL/RANK), and bone morphogenetic protein 2 (BMP-2)/Smad, mitogen-activated protein kinase (MAPK), and mammalian target of rapamycin (mTOR). However, existing research on active ingredients of S. baicalensis for OP treatment is scattered, making it difficult for scholars to gain a systematic understanding of its research and application. This review summarized the literature on the active ingredients of S. baicalensis in OP treatment worldwide, clarified their mechanisms of action, and explored some issues, providing references for the integration of TCM in OP prevention and treatment.


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